JP2021160337A - Corrugated cardboard sheet box making machine - Google Patents

Abstract

To provide a box making machine of a corrugated board sheet, which shortens a preparation time required for an order change and improves production efficiency.SOLUTION: A box making machine of a corrugated board sheet comprises: a paper feed device; a slotter unit; and a control device that controls the paper feed device or the like. The paper feed device includes: a feed mechanism for feeding the corrugated board sheet; and a feed mechanism drive motor. The slotter unit includes an upper slotter, a lower slotter, and a slotter drive motor. In the control device, a production of a current order is completed, and then, the upper slotter and the lower slotter are maintained in rotating states, a paper feed operation by the feed mechanism is stopped, and after stopped, a set work that is a preparatory work for producing a next order in the paper feed device and the slotter unit is started, the setting operation is completed, and then, the paper feed operation by the feed mechanism is started, and a production of the next order is started.SELECTED DRAWING: Figure 6

Description

The present invention relates to a corrugated cardboard sheet box-making machine, and more particularly to a corrugated cardboard sheet box-making machine that undergoes order changes involving preparatory work many times a day.

Conventionally, for example, as described in Patent Document 1, a paper feeding device (paper feeding unit) that feeds out corrugated cardboard sheets one by one, a printing device (printing unit) that prints on the corrugated cardboard sheet, and a corrugated cardboard sheet have been used. Known as a corrugated cardboard box making machine that produces corrugated cardboard boxes from corrugated cardboard sheets, equipped with a crease unit that performs ruled line processing, a slotter unit that performs grooving processing on corrugated cardboard sheets, and a die cutter that punches corrugated cardboard sheets. There is.

In the corrugated cardboard sheet box making machine described in Patent Document 1, a main drive motor is provided, and each of the above-mentioned units (paper feed unit, printing unit, cleaner unit, slotter unit, die cutter) is provided by the main drive motor. Is designed to be driven synchronously.

Next, in a factory that produces corrugated cardboard boxes by a box making machine, corrugated cardboard boxes related to a large number of orders are produced in one day while switching the orders received from customers one after another. When producing each order, before the corrugated cardboard sheets are continuously fed and production is started, order changes are performed many times a day with preparatory work to match the specifications of the corrugated cardboard box related to the order. .. In this many order changes, the time required for preparation for producing the next order (order immediately after the order change) (preparation time) is required.

Japanese Patent No. 6045023

Here, the above-mentioned order changes include "order change without replacement work" and "order change with replacement work".
"Order change without replacement work" is the work of automatically positioning the movable members in each unit, and the paper feed device (paper feed unit) automatically feeds the corrugated cardboard sheet to be processed in the next order or by the operator. This is the case when setting on the table.
On the other hand, "order change with replacement work" is a case where, in addition to the work performed in the above-mentioned "order change without replacement work", the printing unit stamp plate replacement work and the die cutter punching die replacement work are performed. be.

First, the present inventors have found that if the preparation time for the above-mentioned order change can be shortened, the overall production time per day can be shortened and the production efficiency can be improved. Next, according to the investigation by the present inventors, as an example, the preparation time occupies about 70% of the daily production time, and if the daily production time is 8 hours, 5.6 hours are prepared. Turned out to be spending on.

Furthermore, according to the investigation by the present inventors, it was found that "order change without replacement work" accounts for 70% of the order changes performed in one day. Therefore, the present inventors have focused on the fact that the entire preparation time of the day can be efficiently shortened by shortening the preparation time in the “order change without replacement work”.

Next, the present inventors conducted an diligent research on the breakdown of the preparation time in "order change without replacement work".
Specifically, in the corrugated cardboard sheet box making machine described in Patent Document 1, when the main drive motor is stopped, the preparatory work for producing the next order in each unit (hereinafter referred to as "set work"). Is done. At this time, since the paper feeding operation is stopped, there is no risk that the corrugated cardboard sheet will be fed and the machine will break down while the setting work is being performed by the other unit. Then, after the setting work of all the units is completed, the main drive motor is driven, the paper feeding operation is started, and the production of the next order is started.

In the investigation by the present inventors, as shown in FIG. 9, as an example, the preparation time in the "order change without replacement work" is 179 seconds, of which the main drive motor is decelerated from the high-speed rotation state and stopped. It was found that the time and the time to accelerate the main drive motor from the stopped state and rotate it at high speed were 20 seconds each, for a total of 40 seconds, and the deceleration / acceleration time of the main drive motor accounted for 22% of the total preparation time. rice field.
Converting this to the time of the day, if "order change without replacement work" is performed 70 times in a day, 40 seconds x 70 times = 2800 seconds = 46 minutes out of 8 hours of production time in a day. , It means that it is spent on deceleration / acceleration of the main drive motor.

Next, the reason why the deceleration / acceleration time of the main drive motor is long in the box-making machine of Patent Document 1 will be described. In addition to the paper feed roller and great of the paper feed device, the main drive motor has processing rolls such as the print cylinder of the printing device, the upper slotter of the slotter unit, and the die cylinder of the die cutter (according to the transfer of one corrugated cardboard sheet). A roll that rotates once to process the corrugated cardboard sheet at a predetermined position), a press roll for the printing device, a lower slotter for the slotter unit, and a receiving roll for the anvil cylinder of the die cutter (the corrugated cardboard sheet is transported in cooperation with the processing roll). Rolls) are connected and driven. These processing rolls and receiving rolls are manufactured so that the diameter of the roll is large and the length in the width direction is long so that a corrugated cardboard sheet having a large size can be uniformly processed and stably conveyed (for example,). The diameter of the processing roll is 406.4 mm, and the length in the width direction is about 3000 mm). Further, a highly rigid material such as iron is used as the material so that the roll does not bend. In the main drive motor, since the roll of such a large and heavy object is rotated, the moment of inertia of the roll and the motor itself becomes large, and it is difficult to suddenly decelerate or accelerate suddenly. Therefore, it takes a long time to decelerate and stop the main drive motor from the high-speed rotation state, or accelerate from the stopped state to rotate at high speed.

Here, when the main drive motor is stopped, the set work is performed in parallel in each unit, but since the work content differs depending on the unit, the time required for the set work (set work time) also differs.
According to the investigation by the present inventors, as shown in FIG. 9, the set work time of each unit in the order change without replacement work is set in each unit (paper feed device, printing device, cleaner unit, slotter unit, die cutter). Although it is different, it was found that the setting work time of the paper feed device and the slotter unit was particularly long. It is considered that this is because there are many setting work contents of the paper feed device and the slotter unit.
Specifically, in the paper feed device, in addition to the work of positioning the movable member, a "sheet set" that is not found in other units is performed. Therefore, in the slotter unit, there are many work steps of positioning the movable member (adjustment item). Therefore, it is considered that the set work time will be long.

According to the research conducted by the present inventors, the setting work time of each unit varies depending on the moving distance of the movable member according to the combination of the front and rear orders, the number of sheets set, and the like. It turns out that either the device or the slotter unit is the bottleneck in the set work time. Then, during the setting work time of the paper feed device and the slotter unit, which is the bottleneck, the time for decelerating and stopping the main drive motor from the high-speed rotation state and the time for accelerating and rotating the main drive motor from the stopped state at high speed , It turned out that the preparation time of the box making machine as a whole became longer by adding each.

Therefore, the present invention provides a corrugated cardboard sheet box making machine capable of shortening the entire preparation time of the day and improving production efficiency by shortening the preparation time required for order change without replacement work. It is intended to be provided.

In order to achieve the above object, the present invention presents a paper feeding device that feeds out cardboard sheets one by one, a printing device that prints on the cardboard sheet, a cleaner unit that prints the cardboard sheet, and a groove on the cardboard sheet. It is a box-making machine for a corrugated sheet having a slotter unit for cutting and a control device for controlling the paper feed device, printing device, cleaner unit and slotter unit, and the paper feed device is a laminated cardboard. A paper feed roller that feeds out the bottom layer of the cardboard sheet, a paper feed roller drive motor that rotates and drives the paper feed roller, and a paper feed roller that moves up and down with respect to the paper feed roller and the bottom layer cardboard sheet. The slotter unit is equipped with a great that switches between a contact state and a non-contact state, and a great lifting device that raises and lowers this great. A lower slotter having a groove formed into the slotter blade of the paper and a slotter drive motor for rotating these upper slotters and lower slotters. The control device is a slotter drive motor after the production of the current order is discontinued. The upper slotter and the lower slotter are continuously rotated by driving, and the great elevating device is controlled to raise the great to the ascending position, and the paper feeding roller and the lowermost corrugated sheet are in a non-contact state and the paper feeding operation is performed. After the paper feeding operation is stopped, the setting work which is the preparatory work for producing the next order in the paper feeding device, the printing device, the cleaner unit, and the slotter unit is started, and these setting operations are completed. After that, the state in which the upper slotter and the lower slotter are rotated is continued, the rate elevating device is controlled to lower the rate to the lowering position, and the paper feed roller and the bottom layer corrugated sheet are brought into contact with each other to start the paper feed operation. , It is characterized by starting the production of the next order.
In the present invention configured as described above, since the great lifting device for raising and lowering the great is provided separately from the slotter rotary drive motor for rotationally driving the upper slotter and the lower slotter, the upper slotter and the lower portion are provided after the production of the current order is completed. While the slotter is rotating, the great can be raised to stop the paper feeding operation. Here, since Great is lightweight and has a small moment of inertia, the paper feeding operation can be stopped in a shorter time than before. Further, since the upper slotter and the lower slotter having a large moment of inertia continue to be in the rotated state, there is no time for decelerating and stopping the slotter drive motor from the high-speed rotating state in the setting operation. Then, during the setting work, the Great stops at the raised position and the paper feeding operation is stopped, so that the corrugated cardboard sheet is not fed during the setting work and the machine does not break down. Further, since the great can be rapidly accelerated even when the great is lowered after the setting work is completed, the paper feeding operation can be started in a shorter time than in the conventional case. Further, since the upper slotter and the lower slotter continue to be in the rotated state, there is no time to accelerate the slotter drive motor from the stopped state and rotate it at high speed. As a result, according to the present invention, the deceleration / acceleration time of the slotter drive motor, which is added to the set work time of the paper feed device and the slotter unit, which becomes a bottleneck, is reduced when performing an order change without replacement work. It is possible to shorten the preparation time of the box making machine as a whole.

In the present invention, preferably, after the production of the current order is completed, the control device controls the great elevating device to raise the great to the ascending position so that the paper feed roller and the bottom layer corrugated sheet are in a non-contact state and supplied. The paper roller drive motor is controlled to stop the rotation of the paper feed roller to stop the paper feed operation, and after this paper feed operation is stopped, the setting work in the paper feed device, the printing device, the cleaner unit, and the slotter unit is started. After completing these setting operations, the Great Elevating Device is controlled to lower the Great to the lowering position so that the paper feed roller and the bottom layer corrugated sheet are in contact with each other and the paper feed roller drive motor is controlled. The paper feed roller is rotated to start the paper feed operation, and the production of the next order is started.
In the present invention configured as described above, since the paper feed roller drive motor for rotationally driving the paper feed roller is provided separately from the slotter rotary drive motor for rotationally driving the upper slotter and the lower slotter, after the production of the current order is completed. , The rotation of the paper feed roller can be stopped to stop the paper feed operation while the rotation of the upper slotter and the lower slotter is continued. Further, after the setting work is completed, the paper feed roller can be rotated to start the paper feed operation in a state where the upper slotter and the lower slotter are continuously rotated. Here, since the paper feed roller is lightweight, has a small moment of inertia, and can be rapidly decelerated / accelerated, the paper feed operation can be stopped or started in a shorter time than before.

The present invention includes a paper feeding device that feeds out cardboard sheets one by one, a printing device that prints on the cardboard sheet, a cleaner unit that processes the ruled lines on the cardboard sheet, and a slotter unit that performs grooving on the cardboard sheet. A paper sheet making machine having a control device for controlling a paper feed device, a printing device, a crease unit, and a slotter unit. It is equipped with a paper feed roller that feeds out and a paper feed roller drive motor that rotates and drives the paper feed roller. A lower slotter having a groove formed with a slotter blade and a slotter drive motor for rotating these upper slotters and lower slotters are provided, and the control device uses the slotter drive motor after the production of the current order is completed. After driving to continue the state in which the upper slotter and the lower slotter are rotated, the paper feed roller drive motor is controlled to stop the rotation of the paper feed roller to stop the paper feed operation, and after this paper feed operation is stopped. , The state in which the upper slotter and the lower slotter are rotated after the set work, which is the preparatory work for producing the next order in the paper feed device, the printing device, the cleaner unit, and the slotter unit, is started and these set works are completed. The paper feed roller drive motor is controlled to rotate the paper feed roller to start the paper feed operation, and the production of the next order is started.
In the present invention configured as described above, since the paper feed roller drive motor for rotationally driving the paper feed roller is provided separately from the slotter rotary drive motor for rotationally driving the upper slotter and the lower slotter, after the production of the current order is completed. , The rotation of the paper feed roller can be stopped to stop the paper feed operation while the rotation of the upper slotter and the lower slotter is continued. Further, after the setting work is completed, the paper feed roller can be rotated to start the paper feed operation in a state where the upper slotter and the lower slotter are continuously rotated. Here, since the paper feed roller is lightweight, has a small moment of inertia, and can be rapidly decelerated / accelerated, the paper feed operation can be stopped or started in a shorter time than before.

The present invention includes a paper feeding device that feeds out cardboard sheets one by one, a printing device that prints on the cardboard sheet, a cleaner unit that processes the ruled lines on the cardboard sheet, and a slotter unit that performs grooving on the cardboard sheet. A paper sheet making machine having a control device for controlling a paper feed device, a printing device, a crease unit, and a slotter unit. The slotter unit is equipped with a kicker to send out and a kicker drive motor to reciprocate this kicker. A lower slotter having a compatible groove and a slotter drive motor for rotating these upper slotters and lower slotters are provided, and the control device drives the slotter drive motor to drive the upper slotter after the production of the current order is discontinued. The state in which the slotter and the lower slotter are rotated is continued, and the kicker drive motor is controlled to stop the reciprocating motion of the kicker to stop the paper feeding operation. , The set work which is the preparatory work for producing the next order in the cleaner unit and the slotter unit is started, and after these set work is completed, the upper slotter and the lower slotter are kept rotated, and the kicker drive motor is used. The feature is that the kicker is reciprocated to start the paper feeding operation and the production of the next order is started.
In the present invention configured as described above, the kicker drive motor for reciprocating the kicker is provided separately from the slotter rotary drive motor for rotating the upper slotter and the lower slotter. While the rotation of the slotter and the lower slotter is continued, the reciprocating motion of the kicker can be stopped to stop the paper feeding operation. Further, after the setting work is completed, the kicker can be reciprocated to start the paper feeding operation in a state where the upper slotter and the lower slotter are continuously rotated. Here, since the kicker is lightweight, has a small moment of inertia, and can be rapidly decelerated and rapidly accelerated, the paper feeding operation can be stopped or started in a shorter time than before.

In the present invention, preferably, the slotter unit further includes a slotter gap adjusting device for adjusting the vertical gap between the upper slotter and the lower slotter, and a slotter width direction moving device for moving the upper slotter and the lower slotter in the width direction. In the setting work of the slotter unit, the control device drives the slotter drive motor to keep the upper slotter and the lower slotter rotated, and controls the slotter gap adjusting device to control the slotter gap adjusting device with the slotter blade of the upper slotter. The gap in the vertical direction is widened so that the grooves of the lower slotter do not fit, and after widening the gap, the slotter width direction moving device is controlled so that the upper slotter and the lower slotter are each grooved in the next order of the cardboard sheet. After moving in the width direction, the upper slotter and the lower slotter are kept rotated, and the slotter gap adjusting device is controlled to make a gap so that the slotter blade of the upper slotter and the groove of the lower slotter are fitted. Narrow.
First, in the setting work of the slotter unit, when the upper slotter and the lower slotter are moved in the width direction, the movement speeds of the upper slotter and the lower slotter in the width direction may deviate due to rattling or deformation of parts. .. At this time, if the slotter blade of the upper slotter and the groove of the lower slotter are fitted, the slotter blade in the high-speed rotating state and the groove come into contact with each other and are rubbed and worn.
Therefore, in the present invention configured as described above, in the setting work of the slotter unit, when the upper slotter and the lower slotter are moved in the width direction, the gap in the vertical direction between the upper slotter and the lower slotter is widened. After separating the slotter blade and the groove once, the upper slotter and the lower slotter are moved in the width direction, and after the movement, the gap in the vertical direction is narrowed again to fit the slotter blade and the groove, so that the upper slotter and the lower slotter are fitted. Even in the state where the rotation of the slotter is continued, the slotter unit can be set without the slotter blade and the groove coming into contact with each other and being worn.

In the present invention, preferably, the slotter unit is further connected to a slotter width direction moving device that moves the upper slotter and the lower slotter in the width direction, and the upper slotter and the lower slotter are connected to each other in the width direction of the upper slotter and the lower slotter. A slotter connecting device for fixing the position is provided, and the control device controls the slotter connecting device by driving the slotter drive motor to keep the upper slotter and the lower slotter rotated in the setting work in the slotter unit. Then, the upper slotter and the lower slotter are connected to fix the relative positions of the upper slotter and the lower slotter in the width direction, and the slotter width direction moving device is controlled so that the upper slotter and the lower slotter are respectively of the corrugated cardboard sheet of the next order. After moving to the grooving position and moving in the width direction, the slotter connecting device is controlled to release the connection between the upper slotter and the lower slotter.
In the present invention configured as described above, in the setting work of the slotter unit, the upper slotter and the lower slotter are connected to fix the relative positions of the upper slotter and the lower slotter in the width direction, and then the upper slotter and the lower slotter are formed. By moving in the width direction, the upper slotter and the lower slotter move in the width direction while maintaining a certain positional relationship, so that the slotter blade of the upper slotter and the groove of the lower slotter remain fitted and the upper slotter and the lower slotter Even in the state where the rotation of the slotter is continued, the slotter unit can be set without the slotter blade and the groove coming into contact with each other and being worn. Further, by disconnecting the upper slotter and the lower slotter after moving in the width direction, there is no possibility that the corrugated cardboard sheet to be conveyed collides with the slotter connecting device during order production.

In the present invention, preferably, the paper feed device further includes a paper feed table on which the corrugated cardboard sheet is placed, a suction box and a suction device for sucking the lowermost corrugated cardboard sheet on the paper feed table downward. A back guide that regulates the rear edge of the corrugated cardboard sheet on the paper table, a back guide moving device that moves this back guide in the feeding direction of the corrugated cardboard sheet, and at least one corrugated cardboard sheet set on the paper feed table. The control device includes a first sheet set detection device that detects After the movement of the back guide and the stop of suction are completed, the first sheet set detection device detects that at least one corrugated cardboard sheet has been set. After at least one corrugated cardboard sheet is set, the suction device is controlled to start suction.
First, in order to correctly process the corrugated cardboard sheet at a predetermined position, it is necessary to correctly set the corrugated cardboard sheet at a predetermined position (between the front gate and the back guide) on the paper feed table. Therefore, when the sheet is set after the movement of the back guide is completed, the position of the corrugated cardboard sheet may be finely adjusted after the corrugated cardboard sheet is once placed on the paper feed table. At this time, if the suction force is applied, the corrugated cardboard sheet in the lowermost layer is attracted to the paper feed table and cannot be moved, so that the position cannot be adjusted.
Therefore, in the present invention configured as described above, by stopping the suction as the back guide moves, the suction force does not act when the sheet is set, so that the corrugated cardboard sheet of the lowest layer on the paper feed table is used. The position can be adjusted. Further, since the suction is stopped in parallel with the movement of the back guide, the setting work time of the paper feeding device can be shortened as compared with the case where the movement of the back guide is started after the suction is stopped. Further, since the suction is started after at least one corrugated cardboard sheet is set, the setting work time of the paper feeding device can be shortened as compared with the case where the suction is started after the sheet setting is completed. At this time, since the suction force does not act on the second and subsequent corrugated cardboard sheets from the bottom, the position of the second and subsequent corrugated cardboard sheets from the bottom can be adjusted.

The present invention includes a paper feeding device that feeds out cardboard sheets one by one, a printing device that prints on the cardboard sheet, a cleaner unit that processes the ruled lines on the cardboard sheet, and a slotter unit that performs grooving on the cardboard sheet. A paper sheet making machine having a control device for controlling a paper feed device, a printing device, a crease unit, and a slotter unit. The slotter unit is provided with a delivery mechanism for sending out and a delivery mechanism drive motor for driving the delivery mechanism. A lower slotter having a compatible groove and a slotter drive motor for rotating these upper slotters and lower slotters are provided, and the control device drives the slotter drive motor to drive the upper slotter after the production of the current order is discontinued. The state in which the slotter and the lower slotter are rotated is continued, the delivery mechanism drive motor is controlled to stop the delivery mechanism to stop the paper feed operation, and after this paper feed operation is stopped, the paper feed device, the printing device, The set work, which is the preparatory work for producing the next order in the cleaner unit and the slotter unit, is started, and after these set works are completed, the upper slotter and the lower slotter are kept rotated, and the delivery mechanism drive motor. It is characterized in that the paper feed operation is started by controlling and driving the delivery mechanism, and the production of the next order is started.
In the present invention configured as described above, since the delivery mechanism drive motor for driving the delivery mechanism is provided separately from the upper slotter and the slotter rotary drive motor for rotationally driving the lower slotter, the upper slotter is provided after the production of the current order is completed. And while the lower slotter is rotating, the delivery mechanism can be stopped to stop the paper feeding operation. Here, since the delivery mechanism is lightweight and has a small moment of inertia, the paper feeding operation can be stopped in a shorter time than in the conventional case. Further, since the upper slotter and the lower slotter having a large moment of inertia continue to be in the rotated state, there is no time for decelerating and stopping the slotter drive motor from the high-speed rotating state in the setting operation. Then, during the setting operation, the delivery mechanism is stopped and the paper feeding operation is stopped, so that the corrugated cardboard sheet is not fed during the setting operation and the machine does not break down. Further, since the delivery mechanism can be rapidly accelerated even when the delivery mechanism is driven after the setting work is completed, the paper feeding operation can be started in a shorter time than in the conventional case. Further, since the upper slotter and the lower slotter continue to be in the rotated state, there is no time to accelerate the slotter drive motor from the stopped state and rotate it at high speed. As a result, according to the present invention, the deceleration / acceleration time of the slotter drive motor, which is added to the set work time of the paper feed device and the slotter unit, which becomes a bottleneck, is reduced when performing an order change without replacement work. It is possible to shorten the preparation time of the box making machine as a whole.

According to the corrugated cardboard sheet box making machine of the present invention, the preparation time required for order change without replacement work can be shortened, so that the entire preparation time per day can be shortened and the production efficiency can be improved. ..

It is a schematic side view which shows the box making machine of the corrugated cardboard sheet by embodiment of this invention. It is a perspective view which shows the paper feed device of the corrugated cardboard sheet box making machine by embodiment of this invention. FIG. 5 is a cross-sectional view of a paper feeding device for a corrugated cardboard sheet box making machine according to an embodiment of the present invention, in which the great is in an ascending position as viewed along lines III-III of FIG. FIG. 5 is a cross-sectional view of a paper feeding device for a corrugated cardboard sheet box making machine according to an embodiment of the present invention, in which the great is in a descending position as viewed along the lines III-III of FIG. It is a block diagram which shows the control apparatus of the corrugated cardboard sheet box making machine by embodiment of this invention, and the apparatus related thereto. It is a flowchart which shows the order change operation executed by the control device of the corrugated cardboard sheet box making machine by embodiment of this invention. It is a flowchart which shows the setting operation of the paper feed device which is executed by the control device of the corrugated cardboard sheet box making machine by embodiment of this invention. It is a flowchart which shows the setting operation of the slotter unit executed by the control device of the corrugated cardboard sheet box making machine by embodiment of this invention. It is a time chart which shows the time of the set work of order change in the box making machine of the conventional corrugated cardboard sheet. It is a time chart which shows the time of the order change setting work in the paper feed device of the corrugated cardboard sheet box making machine according to the embodiment of this invention. It is a time chart which shows the time of the set work of order change in the slotter unit of the corrugated cardboard sheet box making machine by embodiment of this invention. It is a block diagram which shows a part of the control device of the corrugated cardboard sheet box making machine by the modification of embodiment of this invention. It is a flowchart which shows the setting operation of the slotter unit executed by the control device of the corrugated cardboard sheet box making machine by the modification of embodiment of this invention. It is a partial side view which shows the kicker type paper feed device of the corrugated cardboard sheet box making machine by another embodiment of this invention. It is a side view which shows the kicker type paper feed device of the corrugated cardboard sheet box making machine by another embodiment of this invention. It is a block diagram which shows the control device of the corrugated cardboard sheet box making machine by another embodiment of this invention, and the device related thereto. It is a flowchart which shows the order change operation executed by the control device of the corrugated cardboard sheet box making machine by another embodiment of this invention. It is a flowchart which shows the setting operation of the kicker type paper feed device which is executed by the control device of the corrugated cardboard sheet box making machine by another embodiment of this invention. It is a time chart which shows the time of the set operation of order change in the kicker type paper feed apparatus of the corrugated cardboard sheet box making machine according to another embodiment of this invention.

Hereinafter, a corrugated cardboard sheet box making machine according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1, the overall configuration of the corrugated cardboard sheet box making machine according to the embodiment of the present invention will be described. FIG. 1 is a schematic side view showing a corrugated cardboard sheet box making machine according to an embodiment of the present invention.

As shown in FIG. 1, the corrugated cardboard sheet box making machine 1 according to the embodiment of the present invention includes a paper feeding device 2 that feeds out corrugated cardboard sheet SH one by one, a printing device 4 that prints on the corrugated cardboard sheet SH, and a corrugated cardboard sheet. It includes a cleaner unit 6 for performing ruled line processing on SH, a slotter unit 8 for grooving the corrugated cardboard sheet SH, and a die cutter 10 for punching the corrugated cardboard sheet SH. In addition to these, the box making machine 1 counts a folder gluer for joining corrugated cardboard sheets in a box shape and a corrugated cardboard sheet joined in a box shape on the downstream side of the die cutter 10, although not shown, and determines a predetermined sheet. It is equipped with a counter ejector that forms and sends out a batch of sheets.

Here, unlike the box-making machine described above, the corrugated cardboard sheet box-making machine according to the present embodiment may not be provided with the die cutter 10. In this case, a folder gluer is provided on the downstream side of the slotter unit 8. , Equipped with a counter ejector.

The paper feeding device 1 has a suction box 12 as a housing, and a plurality of corrugated cardboard sheet SH manufactured by a corrugator (not shown) is front on the table 12b forming the upper surface of the suction box 12. It is loaded between the gate 14 and the back guide 16. The front gate 14 is arranged so that the corrugated cardboard sheets SH are sent out one by one from the gap between the table 12b and the front gate 14. The back guide 16 is configured to be movable with respect to the front gate 14 in the delivery direction FD, and can accommodate corrugated cardboard sheet SH having different lengths along the delivery direction FD. Further, a suction device 18 (only a part thereof is shown in FIG. 1) is attached to the lower part of the suction box 12, and the air inside the suction box 12 is sucked by the suction device 18.

Further, the paper feed device 2 extends along each of a plurality of paper feed rollers 20 arranged along the feed direction FD and the direction orthogonal to the feed direction FD, and the feed direction FD and the direction orthogonal to the feed direction FD. It has a great 22 which is formed of a plate-shaped member and is an elevating member which can be elevated and lowered with respect to the paper feed roller 20. The plurality of paper feed rollers 20 and the Great 22 are provided on the upper part of the suction box 12 and form a part of the upper surface of the suction box 12. When the great 22 is lowered from the paper feed roller 20, the paper feed roller 20 comes into contact with the lowermost corrugated cardboard sheet SH among the plurality of corrugated cardboard sheets SH, so that the rotation of the paper feed roller 20 is caused by the corrugated cardboard sheet SH. The corrugated cardboard sheet SH is transmitted to the SH and is sent out toward the front feed roll 24. In this case, when the corrugated cardboard sheet SH fed by the paper feed roller 20 reaches the feed roll 24, the corrugated cardboard sheet SH is further fed to the printing device 4 in front of the feed roll 24 by the feed roll 24. On the other hand, when the Great 22 rises above the paper feed roller 20, the paper feed roller 20 comes into non-contact with the corrugated cardboard sheet SH, and the rotation of the paper feed roller 20 is not transmitted to the corrugated cardboard sheet SH. The feed roll 24 is driven by the feed roll drive motor 76 (see FIG. 5).

The printing device 4 includes two printing units 25 and 26. The printing units 25 and 26 include printing cylinders 25A and 26A, printing plates 25B and 26B, ink coating mechanisms 25C and 26C, and press rolls 25D and 26D, respectively. The printing plates 25B and 26B have a predetermined printing pattern and are attached to the outer peripheral surfaces of the printing cylinders 25A and 26A, respectively. The ink application mechanisms 25C and 26C apply inks of different colors to each printing unit. The printing device 4 prints two colors on the corrugated cardboard sheet SH by both printing units 25 and 26, and supplies the printed corrugated cardboard sheet SH to the cleaner unit 6.
These printing units 25 and 26 are used to separate the printing cylinders 25A and 26A from the transfer line in order to allow the corrugated cardboard sheet SH to pass through without printing or to replace the printing plates 25B and 26B in the empty passing state. Elevating devices 104 and 106 (see FIG. 5) are provided. These elevating devices 104 and 106 allow the printing cylinders 25A and 26B to be switched between a lower use position and an upper standby position.
The printing cylinders 25A and 26A of the printing units 25 and 26 are driven by the printing cylinder drive motors 78 and 80 (see FIG. 5), and the press rolls 25D and 26D are pressed roll drive motors 82 and 84 (see FIG. 5). Driven by.

The cleaner unit 6 includes a pair of ruled line rolls 6A and 6B arranged one above the other for performing ruled line processing.
The slotter unit 8 includes two slotters 27 and 28 for performing grooving, and the two slotters 27 and 28 are upper slotters 27A and 28A to which slotter blades 27B and 28B are attached for grooving. And lower slotters 27D and 28D, which are formed with grooves 27C and 28C that can be fitted with the slotter blades 27B and 28B, respectively.

The die cutter 10 includes a die cylinder 30 and an anvil cylinder 29 with a transport path interposed therebetween. One punching die 31 for punching the corrugated cardboard sheet SH is attached to a plate-like body such as plywood veneer, and this plate-like body is wound around the outer peripheral surface of the die cylinder 30. The punching die 31 can be replaced with a punching die having a punching pattern according to the order when the order is changed.

The above-mentioned cleaner unit 6, two slotters 27 and 28, and a die cutter 10 are driven by a cleaner slotter die cutter drive motor 86 (see FIG. 5).

Next, with reference to FIGS. 2 to 4, a specific structure of the paper feeding device 2 of the corrugated cardboard sheet box making machine 1 according to the embodiment of the present invention will be described. FIG. 2 is a perspective view showing a paper feeding device for a corrugated cardboard sheet box-making machine according to an embodiment of the present invention, and FIG. 3 is a paper feeding device for a corrugated cardboard sheet box-making machine according to an embodiment of the present invention. It is a cross-sectional view in which the great is in the ascending position as seen along the line III, and FIG. It is a cross-sectional view in which the corrugated cardboard is in the descending position.

As shown in FIG. 2, the suction box 12 has a housing formed by left and right side walls 12c, a table (mounting surface) 12b on the upper surface, and the like, and a suction device 18 (only a part thereof is shown in FIG. 2) below the housing. ) Is attached, and the corrugated cardboard sheet SH (see FIG. 1) placed on the table 12b is sucked downward. On the downstream side of the suction box 12, a front gate 14 is arranged so as to extend vertically upward. The position of the front gate 14 can be adjusted in the vertical direction, and the distance between the lower end of the front gate 14 and the table 12b of the suction box 12 can be adjusted according to the thickness of the corrugated cardboard sheet SH. Further, on the downstream side of the suction box 12, a pair of upper and lower feed rolls 24 are provided along the height of the upper surface of the suction box 12. The corrugated cardboard sheets SH are set in a stacked state on the table 12b of the suction box 12, are sent out one by one from the lowest layer to the downstream side, and are taken in between the pair of feed rolls 24.

On the upper part of the suction box 12, a plurality of paper feed rollers 20 (20a, 20b, 20c, 20d) for feeding the lowest layer corrugated cardboard sheet SH among the laminated corrugated cardboard sheet SH to the feed roll 24 side, and a plurality of feed rollers 20 (20a, 20b, 20c, 20d) and a plurality of feed rollers 20 (20a, 20b, 20c, 20d). A great 22 that adjusts the contact and separation of the plurality of paper feed rollers 20 and the corrugated cardboard sheet SH of the lowermost layer is provided by adjusting the amount of protrusion with respect to the paper roller 20 by its ascending / descending motion. Specifically, the suction box 12 is provided with an opening 12a on the table 12b, and a plurality of paper feed rollers 20 and a great 22 are arranged in the opening 12a. Further, on the side of the suction box 12, there are a plurality of paper feed roller drive motors 32, which are servo motors for driving the plurality of paper feed rollers 20, and a great elevating motor 34, which is a servo motor for driving the great 22. Have been placed.

The plurality of paper feed rollers 20 have four drive shafts 36, and a paper feed roller drive motor 32 is connected to each of the four drive shafts 36. Each can be driven to rotate independently. Further, the paper feed roller 20 projects upward from the great 22 through the opening 22a of the great 22 and appears in the opening 12a of the suction box 12 due to the ascending / descending movement of the great 22 (see FIG. 4), or the great 22 It may be located further down (see FIG. 3).

As shown in FIGS. 3 and 4, the great 22 is a plate-shaped member arranged in the opening 12a of the suction box 12. The Great 22 has a plate-shaped member having a plurality of openings 22a for receiving each of the paper feed rollers 20 (20a, 20b, 20c, 20d) so as not to come into contact with the paper feed rollers 20 when ascending and descending. It is formed through. The great 22 is connected to the swing shaft 42 via L-shaped members 38, 38, arms 40, and the like arranged near the four corners of the plate shape. Specifically, U-shaped claws 22b are formed at both ends of the plate-shaped Great 22 in the front-rear direction, and an L-shaped member 38 that moves the Great 22 up and down through the claws 22b. The arm 40 and the like are connected.

A swing member 44 is attached to the end of the swing shaft 42 of the great 22, an eccentric cam 46 is attached to the swing member 44, and a great drive motor 34, which is a servomotor, is attached to the eccentric cam 46. There is. The eccentric cam 46 is formed in a circular shape and rotates on a rotation axis eccentric from the rotation axis of the great drive motor 34, and the swing member 44 swings due to the operation of the eccentric cam 46. It swings around the moving shaft 42. Then, the swinging motion of the swinging member 44 is transmitted to the swinging shaft 42. The swing shaft 42 is connected to an arm 40 arranged below the great 22 via a connector 50, and this arm 40 is arranged below the great 22 in the delivery direction FD of the corrugated cardboard sheet SH, and the great 22 It is connected to the Great 22 via L-shaped members 38 arranged near the four corners. When the arm 40 moves in the feeding direction FD due to the rotation of the swing shaft 42, the side of the L-shaped member 38 connected to the great 22 is lifted, so that the great 22 rises to the rising position shown in FIG. On the other hand, when the arm 40 moves in the direction opposite to the feeding direction FD due to the rotation of the swing shaft 42, the side of the L-shaped member 38 connected to the great 22 is pushed down, so that the great 22 descends as shown in FIG. Descend to position.

Next, with reference to FIG. 5, the control device of the corrugated cardboard sheet box making machine 1 according to the present embodiment and the device related thereto will be described. FIG. 5 is a block diagram showing a control device for a corrugated cardboard sheet box making machine according to an embodiment of the present invention and a device related thereto.

As shown in FIG. 5, the corrugated cardboard sheet box making machine 1 according to the present embodiment includes a control device 60. The box making machine 1 is adapted to control the above-mentioned paper feeding device 2, the printing device 4, the cleaner unit 6, the slotter unit 8, the die cutter 10, and the like by the control device 60.

Specifically, the control device 60 is a feed roll drive motor control unit 64, two printing units (first color and second color) 25, 26, and a printing cylinder drive motor control unit 66, via the drive control unit 62. Drive commands are sent to 68, the press roll drive motor control units 70 and 72, and the cleaner slotter die cutter drive motor control unit 74, respectively, to control each drive motor. Specifically, the feed roll drive motor control unit 64 controls the Ford roll drive motor 76, and the print cylinder drive motor control units 66 and 68 control the print cylinder drive motors 78 and 80, respectively, and the press roll drive motor. The control units 70 and 72 control the press roll drive motors 82 and 84, respectively, and the cleaner slotter die cutter drive motor control unit 74 controls the cleaner slotter die cutter drive motor 86.

Next, the control device 60 controls the paper feed roller drive motor 32 via the paper feed roller drive motor control unit 88 to rotate the paper feed roller 20, and the great elevating motor control unit 90. The elevating motor 34 is controlled to elevate and elevate the Great 22.

Here, during the production of the order, the drive control unit 62 is set so that the peripheral speeds of the feed rolls 24, the printing device 4, the creator unit 6, the slotter unit 8, and the die cutter 10 that convey the corrugated cardboard sheet SH match. The paper feed rollers 20 and the Great 22 are operated so that one corrugated cardboard sheet SH is fed at the timing when the processing rolls such as the printing cylinders 25A and 26A rotate once while rotating each roll synchronously. Control.

Further, the control device 60 controls the blower motor 94, the front gate moving device 96, and the back guide moving device 98 of the suction device 18 via the paper feeding device control unit 92 to set the paper feeding device 2.
Similarly, the two printing units 25 of the printing device 4 control the elevating devices 104 and 106 via the printing device control units 100 and 102 of the two printing units (first and second colors) 25 and 26. 26 setting work is performed.
Similarly, the cleaner gap adjusting device 110 and the cleaner width direction moving device 112 are controlled via the cleaner control unit 108 to set the cleaner unit 6.
Similarly, the slotter gap adjusting device 116, the slotter width direction moving device 118, and the slotter phase adjusting device 120 are controlled via the slotter unit control unit 114 to set the slotter unit 8.
Similarly, the die cutter gap adjusting device 124 is controlled via the die cutter control unit 122 to set the die cutter 10.
The above-mentioned cleaner gap adjusting device 110, cleaner width direction moving device 112, slotter gap adjusting device 116, and slotter width direction moving device 118 are described in, for example, Japanese Patent Application Laid-Open No. 2004-291470. Further, the slotter phase adjusting device 120 is described in, for example, Japanese Patent Application Laid-Open No. 2002-67190.

An operation panel 126 is connected to the control device 60, and the operation panel 126 includes a plurality of operation switches for performing operations on each unit and the like. The operation switch is the "first sheet set completion switch 128" that is operated when at least one corrugated cardboard sheet SH is set on the table 12b, and the corrugated cardboard sheet SH set on the table 10b is continuously fed and ordered. The "paper feed start switch 130" for starting the production of the cardboard is included.

A program memory 132 is connected to the control device 60, and a program or the like related to the order change operation is fixedly stored in the program memory 132. Further, a working memory 134 is connected to the control device 60, and information about an order to be executed is temporarily stored in the working memory 134.

Next, the order change operation executed by the control device 60 of the corrugated cardboard sheet box making machine 1 according to the embodiment of the present invention will be described with reference to FIGS. 6 to 8. Here, in FIGS. 6 to 8, "S", "P", and "T" indicate each step.

After the start, first, in S1, the production of the current order is executed. Next, the process proceeds to S2, and the program related to the order change operation is executed. Specifically, the planned number of corrugated cardboard sheets of the current order is fed, and it is detected that the corrugated cardboard sheets are no longer on the paper feed table. This detection uses a sensor (not shown).

Next, the process proceeds to S3, the paper feed roller and the great are stopped, and the paper feed operation is stopped. Next, the process proceeds to S4, and it is detected that the last corrugated cardboard sheet of the current order has passed through the die cutter. This detection also uses a sensor (not shown).

Next, the process proceeds to S5, and it is determined whether or not the "order change with replacement work" is performed. Here, as described above, "order change without replacement work" is a work of automatically positioning movable members in each unit and a corrugated cardboard sheet to be processed in the next order in a paper feeding device (paper feeding unit). Is to be performed automatically or by the operator on the paper feed table. On the other hand, "order change with replacement work" is a printing unit in addition to the work performed in "order change without replacement work". This is the case when the stamp plate is replaced or the die cutter punching die is replaced.

If it is determined in S5 that the order is changed with replacement work, the process proceeds to S6. First, in S6, each of the determined units (feed roll, printing device, cleaner unit, slotter unit, die cutter) is stopped. Next, the process proceeds to S7, and the setting work of each unit is started. In this set work, the stamp plate replacement work and the die cutter punching die replacement work are performed. Next, the process proceeds to S8, and each roll is rotated in each unit. After that, the process proceeds to S15 and S16, which will be described later.

Next, in S5, if it is determined that the order is not "order change with replacement work", that is, "order change without replacement work", the process proceeds to S9 and the setting work of each unit is started. At this time, the setting work of each unit is performed in parallel. That is, in S10, S11, S12, S13, and S14, which will be described later, each set operation is performed in parallel.

First, the process proceeds to S10 to execute the setting work of the paper feed device. The contents of the setting work of the paper feed device will be described with reference to FIG. In P1, the rotation speed of the feed roll is adjusted so as to have a peripheral speed according to the production speed (= corrugated cardboard sheet transport speed) of the next order while the feed roll is rotating (at this time, the paper feed roller is adjusted. It is stopped). Next, in P2, the back guide is moved to a position that matches the dimensions of the corrugated cardboard sheet of the next order. Next, in P3, the rotation of the blower motor is stopped to stop the suction. After the work in P2 and P3, the sheet is set automatically or by the operator.

Next, the process proceeds to P4, and it is detected that the "single sheet set completion switch" on the operation panel has been operated. After that, the process proceeds to P5 and P6, and at P5, the blower motor is rotated to start suction, and at the same time, at P6, the corrugated cardboard sheet of the next order is placed between the lower end of the front gate and the upper surface of the paper feed table. Adjust the height so that only one sheet can pass. Here, while P5 and P6 are being executed, the sheet set is continued automatically or by the operator.

Next, the process returns to S11 of FIG. 6 and the setting operation of the printing apparatus is executed. For example, when the first color is used in the current order and the second color is used in the next order, 1) the peripheral speed according to the production speed of the next order is obtained while the press rolls of the first color and the second color are rotated. Adjust the rotation speed so that. 2) Stop the rotation of the printing cylinder of the first color printing unit. 3) Move the 1st color printing unit from the lower used position to the upper standby position. 4) While rotating the printing cylinder of the second color printing unit, adjust the rotation speed so that the peripheral speed becomes a peripheral speed according to the production speed of the next order. 5) Move the second color printing unit from the upper standby position to the lower use position. The above-mentioned operations 1) to 5) are performed in parallel.

Next, the process proceeds to S12 of FIG. 6 to execute the setting operation of the cleaner unit. 1) While rotating the upper and lower ruled line rollers, adjust the rotation speed so that the peripheral speed becomes the peripheral speed according to the production speed of the next order. 2) Adjust the gap between the upper and lower ruled line rollers to a value according to the thickness of the corrugated cardboard sheet of the next order. 3) Move the position of the upper and lower ruled line rollers in the width direction to the ruled line processing position of the corrugated cardboard sheet of the next order. These operations 1) to 3) are performed in parallel.

Next, the process proceeds to S13 of FIG. 6 to execute the slotter unit setting operation. The contents of the setting work of the slotter unit will be described with reference to FIG. In T1, the rotation speed is adjusted so as to have a peripheral speed according to the production speed of the next order while rotating the upper and lower slotters. In T2, the phase of the slotter blade of the upper slotter is adjusted according to the grooving dimension of the corrugated cardboard sheet of the next order. At T3, the gap between the upper and lower slotters is widened so that the slotter blade of the upper slotter and the groove of the lower slotter do not fit. These T1, T2, and T3 operations are performed in parallel.

Next, in T4, the position in the width direction of the upper and lower slotters is moved to the grooving position of the corrugated cardboard sheet of the next order. Here, after T3 is executed, T4 is performed in parallel with T1 and T2.

Next, in T5, the gap between the upper and lower slotters is narrowed, the slotter blade of the upper slotter and the groove of the lower slotter are fitted, and the gap is adjusted to a value corresponding to the thickness of the corrugated cardboard sheet of the next order. Here, after T4 is executed, T5 is performed in parallel with T1 and T2.

Next, the process proceeds to S14 of FIG. 6 to execute the die cutter setting operation. 1) While rotating the die cylinder and the anvil cylinder, adjust the rotation speed so that the peripheral speed becomes the peripheral speed according to the production speed of the next order. 2) Adjust the gap between the die cylinder and the anvil cylinder to a value according to the thickness of the corrugated cardboard sheet of the next order. Here, the operations 1) and 2) are performed in parallel.

Next, the process proceeds to S15, and it is detected that the setting work of all the units is completed and the "paper feed start switch" on the operation panel is operated. Next, the process proceeds to S16, the paper feed roller and the great are driven to start the paper feed operation, and the production of the next order is started.

In the actual order change, after the set work is completed, only one corrugated cardboard sheet is fed, trial processing and inspection are performed, and then continuous feeding is performed to start production, but the explanation is omitted here. do.

Next, with reference to FIGS. 9 to 11, the action and effect of the corrugated cardboard sheet box making machine according to the present embodiment will be described. FIG. 9 is a time chart showing the time for setting the order change in the conventional corrugated cardboard sheet making machine, and FIG. 10 is the setting of the order change in the paper feeding device of the corrugated cardboard sheet making machine according to the embodiment of the present invention. It is a time chart which shows the working time, and FIG. 11 is a time chart which shows the time of the order change setting work in the slotter unit of the corrugated cardboard sheet box making machine according to the embodiment of this invention.

First, as shown in FIG. 9, in the conventional box making machine, the rotation speed of the drive roll of each unit (paper feed device, feed roll, printing device, cleaner unit, slotter unit, die cutter) is the transfer speed of the corrugated cardboard sheet. Synchronous control is performed so that the speed becomes high. Further, since the rolls of the printing apparatus and the slotter unit are large and heavy, the moment of inertia is large, and sudden stop and sudden acceleration cannot be performed. Therefore, when performing "order change without replacement work", even if the production of the current order is finished, it takes 20 seconds for the drive motor to decelerate and stop, and the set work in the order change is completed. It takes 20 seconds to accelerate the drive motor and reach the operating speed later for the production of the next order.

Furthermore, for setting work, "machine set of paper feed device", "sheet set of paper feed device", "machine set of printing device", "machine set of cleaner unit", "machine set of slotter unit", "machine set of slotter unit", "machine set" "Die cutter machine set" is executed in parallel, but it still takes 79 seconds. Here, the "machine set" is a work of automatically positioning a movable member (a printing cylinder of a printing device or the like) in each unit according to the dimensions and processing position of a corrugated cardboard sheet to be processed in the next order.

In this way, in the conventional box making machine, when performing "order change without replacement work", as an example, the deceleration time of the drive motor of the box making machine is 20 seconds, the set work time in each unit is 79 seconds, and the manufacturing is performed. The acceleration time of the drive motor of the box machine was 20 seconds, the trial processing inspection time for the next order production was 60 seconds, and the total preparation time was 179 seconds.

In contrast to this conventional box-making machine, in the corrugated cardboard sheet box-making machine according to the present embodiment, as shown in FIGS. 10 and 11, when performing "order change without replacement work", the supply is an example. Only the machine set and sheet set times of the paper equipment are required, and the total preparation time of 139 seconds is required, including the trial processing inspection time of 60 seconds for the next order production. Therefore, the preparation time for the alternator can be shortened by 40 seconds as compared with the conventional box making machine. Hereinafter, a specific description will be given.

As shown in FIGS. 10 and 11, when performing “order change without replacement work”, in the paper feed device, the paper feed roller drive motor 32 for driving the paper feed roller 20 and the great elevating motor for driving the great 22 Since 34 is provided separately from the cleaner slotter die cutter drive motor 86 that drives the cleaner unit 6, slotter unit 8, and die cutter 10, first, the paper feed roller drive motor 32 and the great elevating motor 34 are lightweight and inertial, respectively. Since the moment is small, the paper feeding operation can be stopped in a short time (about 1 second) as compared with the conventional case (see FIG. 10). Next, at the time of order change, in the slotter unit 8, the upper slotters 27A and 28A and the lower slotters 27D and 28D are kept rotated (see FIG. 11). Therefore, in the box making machine according to the present embodiment, it is not necessary to stop and accelerate the large slotter unit having a large moment of inertia when performing the "order change without replacement work", so that the stop and acceleration which are conventionally required are stopped and accelerated. The 40 second time for is no longer needed. At this time, the cleaner unit 6 and the die cutter 10 are also kept in the rotated state in the same manner as the slotter unit 8. From the above, according to the corrugated cardboard sheet box making machine 1 according to the present embodiment, when performing "order change without replacement work", a large slotter unit or the like having a large moment of inertia is continuously rotated without stopping. Therefore, the work time for order change can be shortened.
Further, in the setting work of the slotter unit, when the upper slotter and the lower slotter are moved in the width direction, the movement speeds of the upper slotter and the lower slotter in the width direction may deviate due to rattling or deformation of parts. be. At this time, if the slotter blade of the upper slotter and the groove of the lower slotter are fitted, the slotter blade in the high-speed rotating state and the groove come into contact with each other and are rubbed and worn. Therefore, the vertical gap between the upper slotter and the lower slotter is widened, the slotter blade and the groove are once separated, then the upper slotter and the lower slotter are moved in the width direction, and after the movement, the vertical gap is narrowed again. By fitting the slotter blade and the groove, the slotter unit can be set without the slotter blade and the groove coming into contact with each other and wearing even when the upper slotter and the lower slotter are continuously rotated. can.

Next, a modified example of the setting work of the slotter unit will be described with reference to FIGS. 12 and 13. “R” in FIG. 13 indicates each step.
First, as shown in FIG. 12, in the box-making machine according to the present embodiment, the slotter width direction moving device 118 and the slotter connecting device 126 are controlled via the slotter unit control unit 114 to set the slotter unit 8. I do.
Here, the slotter coupling device 126 is described in, for example, Japanese Patent Application Laid-Open No. 2004-291470.

Specifically, when setting the slotter unit, as shown in FIG. 13, the rotation speed of the upper and lower slotters is kept rotating in R1 so as to have a peripheral speed according to the production speed of the next order. To adjust. In R2, the phase of the slotter blade of the upper slotter is adjusted according to the grooving dimension of the corrugated cardboard sheet of the next order. In R3, the upper and lower slotters are connected. These R1, R2, and R3 operations are performed in parallel. The slotter blade of the upper slotter and the groove of the lower slotter are still fitted.

Next, in R4, the position in the width direction of the upper and lower slotters is moved to the grooving position of the corrugated cardboard sheet of the next order. Here, after R3 is executed, R4 is performed in parallel with R1 and R2.

Next, in R5, the upper and lower slotters are disconnected, and the gap is adjusted to a value corresponding to the thickness of the corrugated cardboard sheet of the next order while keeping the slotter blade of the upper slotter and the groove of the lower slotter fitted. Here, after R4 is executed, R5 is performed in parallel with R1 and R2.

The action and effect of this modification will be described. As described above, in the setting work of the slotter unit, when the upper slotter and the lower slotter are moved in the width direction, the moving speed of the upper slotter and the lower slotter in the width direction is increased due to rattling or deformation of the parts. It may shift. At this time, if the slotter blade of the upper slotter and the groove of the lower slotter are fitted, the slotter blade in the high-speed rotating state and the groove come into contact with each other and are rubbed and worn. Therefore, the upper and lower slotters are connected, the relative positions of the upper slotter and the lower slotter in the width direction are fixed and connected, and then the connected upper slotter and the lower slotter are moved in the width direction. Since the upper slotter and the lower slotter move in the width direction while maintaining a constant positional relationship, the slotter blade of the upper slotter and the groove of the lower slotter remain fitted, and the upper slotter and the lower slotter remain rotated. The slotter unit can be set without the slotter blade and the groove coming into contact with each other and being worn. Further, by disconnecting the upper slotter and the lower slotter after moving in the width direction, there is no possibility that the corrugated cardboard sheet to be conveyed collides with the slotter connecting device during order production.

Next, a modified example of the paper feeding operation and stopping method in the paper feeding device will be described. A clutch is provided at the connecting part of the great and the great elevating motor, and instead of stopping the great elevating motor at the start of the setting work, the great is stopped at the upper position by disconnecting the connection between the great and the elevating motor by the clutch. May be good.
Further, at the start of the setting operation, only the great may be stopped at the upper position while the paper feed roller is rotated to stop the paper feed operation.

Next, a modified example of the paper feed device will be described. In this variant, the paper feed device does not have a great, but only a paper feed roller. In this modification, a plurality of paper feed rollers are individually rotationally driven by a plurality of paper feed roller drive motors, and at the start of setting work, after the last corrugated cardboard sheet of the current order is sent out, each paper feed roller is stopped. And stop the paper feed operation. At the start of order production, each paper feed roller is in contact with the bottom layer corrugated cardboard sheet, and each paper feed roller is rotated to feed out the corrugated cardboard sheet. By stopping in order from the released upstream side paper feed roller, it is possible to prevent the second corrugated cardboard sheet from the bottom from coming into contact with the rotating paper feed roller and being damaged. During order production, such rotation and stop control of the paper feed roller is repeated.
Here, in the modified example of this paper feeding device, the great 22 shown in FIG. 3, the L-shaped member 38 for raising and lowering the great 22, the arm 40, the swing shaft 42, and the like are not provided. Further, the great elevating motor control unit 90 and the great elevating motor 34 shown in FIG. 5 are not provided.

Next, a box making machine for a corrugated cardboard sheet according to another embodiment of the present invention will be described with reference to FIGS. 14 to 19. The corrugated cardboard sheet box-making machine according to another embodiment of the present invention uses a kicker-type paper-feeding device as the paper-feeding device, and this point is the corrugated cardboard sheet box-making described with reference to FIGS. 1 to 13 described above. It's different from the machine. Therefore, the box-making machine according to the other embodiment will be described below with respect to the portion different from the box-making machine according to the above-described embodiment.

First, the structure of the kicker-type paper feed device used in the corrugated cardboard sheet box-making machine according to another embodiment of the present invention will be described with reference to FIGS. 14 and 15. FIG. 14 is a partial side view showing a kicker-type paper feed device for a corrugated cardboard sheet box-making machine according to another embodiment of the present invention, and FIG. 15 is a kicker for a corrugated cardboard sheet box-making machine according to another embodiment of the present invention. It is a side view which shows the type paper feed device.

As shown in FIG. 14, the corrugated cardboard sheet box making machine 200 according to another embodiment of the present invention includes a kicker type paper feed device 202. In this kicker type paper feed device 202, the table 204 for laminating the corrugated cardboard sheet SH, the front gate 206 in which the tip of the corrugated cardboard sheet SH abuts and the position can be adjusted in the vertical direction, and the rear end of the corrugated cardboard sheet SH are in contact with each other. A back guide 208 that is in contact with the front gate 206 and is movable in the delivery direction FD of the corrugated cardboard sheet SH, and a kicker device 210 that feeds (extrudes) the corrugated cardboard sheet SH of the lowermost layer of the laminated corrugated cardboard sheets to the feed roll 24. It has. Here, the back guide 208 and the kicker device 210 can be integrally moved in the feeding direction FD according to the length of the corrugated cardboard sheet SH. Further, the table 204 forms the upper surface of the suction box (not shown), and the air inside the suction box is sucked by the suction device (not shown).

As shown in FIG. 15, the kicker device 210 of the kicker type paper feed device 202 includes a kicker drive motor 212, a crank mechanism 214 that converts the rotational motion of the kicker drive motor 212 into reciprocating motion, and the crank mechanism 214. A slide member 216 connected to the end, a linear guide 218 that guides the slide member 216 in the feeding direction FD of the corrugated cardboard sheet SH, and a kicker 220 that is attached to the slide member 216 and pushes the corrugated cardboard sheet SH toward the feed roll 24. It has.

Here, the crank mechanism 214 sandwiches the flywheel 221 rotated by the kicker drive motor 212, the support pin attached to the outer peripheral side of the surface of the flywheel 221 and the support pin 222, and slides on the support pin 222. It includes a U-shaped sliding contact holding member 224, and a first arm member 228 and a second arm member 230 attached via a fulcrum shaft 226 on the rear end side of the sliding contact holding member 224. Here, in the crank mechanism 214, the sliding contact holding member 224 and the first arm member 228 are set to a predetermined angle γ on the fulcrum shaft 226, and this angle γ is maintained.

In this kicker device 210, when the support pin 222 makes one rotation with one rotation of the flywheel 221, the sliding contact holding member 224 swings while sliding with respect to the support pin 222 in accordance with the rotation of the support pin 222. do. The swing of the sliding contact holding member 224 is transmitted to the first arm member 228 held at an angle γ, and the first arm member 228 is swung at a predetermined angle A. This swing is transmitted to the second arm member 230, and the displacement (reciprocating movement) of the corrugated cardboard sheet SH in the feeding direction FD is applied to the slide member 216. Therefore, the kicker 220 attached to the slide member 216 reciprocates once in the feeding direction FD, and one corrugated cardboard sheet is fed (pushed out) to the feed roll 24.

Next, a control device for a corrugated cardboard sheet box making machine according to another embodiment of the present invention and a device related thereto will be described with reference to FIG. FIG. 16 is a block diagram showing a control device for a corrugated cardboard sheet box making machine according to another embodiment of the present invention and a device related thereto. Here, only a configuration different from the block diagram shown in FIG. 5 will be described.

In another embodiment of the present invention, the kicker type paper feed device 202 is used as the paper feed device. Therefore, as shown in FIG. 16, the control device 232 controls the kicker drive motor 212 via the kicker drive motor control unit 234, reciprocates the kicker 220, and transfers the bottom layer corrugated sheet SH to the feed roll 24. It is designed to be sent out (pushed out).
The "great elevating motor control unit 90" and the "great elevating motor 34" shown in FIG. 5 are not provided.

Next, with reference to FIGS. 17 and 18, an order change operation executed by the control device 232 of the box making machine 200 of the ball sheet according to another embodiment of the present invention will be described. FIG. 17 is a flowchart showing an order change operation executed by the control device of the corrugated cardboard sheet box making machine according to another embodiment of the present invention, and FIG. 18 is a flowchart showing the corrugated cardboard sheet box making machine according to another embodiment of the present invention. It is a flowchart which shows the setting work of the kicker type paper feed device executed by the control device of.
Since most of the order change operations according to the other embodiments are the same as the order change operations executed by the control device 60 of the embodiments shown in FIGS. 6 and 7, only the different parts will be described here.

As shown in FIG. 17, S21, S22, S24 to S35 are the same as S1, S2, S4 to S15 in FIG. 6, and only S23 and S36 are different.
That is, when the kicker type paper feed device 202 is used as the paper feed device, the reciprocating motion of the kicker is stopped in S23 to stop the paper feed operation. Further, in S36, the kicker is reciprocated to start the paper feeding operation.

As shown in FIG. 18, in the setting work of the kicker type paper feed device, P11 and P13 to P16 are the same as P1 and P3 to P6 in FIG. 7, and only S12 is different.
That is, when the kicker type paper feed device 202 is used as the paper feed device, the back guide and the kicker are moved to positions in S12 that match the dimensions of the corrugated cardboard sheet of the next order.

Next, with reference to FIG. 19, the action and effect of the corrugated cardboard sheet making machine according to another embodiment of the present invention will be described. FIG. 19 is a time chart showing the time of the order change setting operation in the kicker type paper feed device of the corrugated cardboard sheet box making machine according to another embodiment of the present invention.
As shown in FIG. 19, even in the box making machine 200 using the kicker type paper feed device 202, when performing "order change without replacement work", the kicker drive motor 212 for driving the kicker 220 is used as the cleaner unit 6, Since the kicker drive motor 212 is lightweight and has a small moment of inertia because it is provided separately from the crease slotter die cutter drive motor 86 that drives the slotter unit 8 and the die cutter 10, it takes a shorter time (about 1 second) than before. The paper feeding operation can be stopped. Next, at the time of order change, in the slotter unit 8, the upper slotters 27A and 28A and the lower slotters 27D and 28D are kept rotated (see FIG. 11). Therefore, even in the box making machine 200 using the kicker type paper feed device 202, it is not necessary to stop and accelerate the large slotter unit having a large moment of inertia when performing "order change without replacement work", which is conventionally necessary. The 40-second time for stopping and accelerating was no longer required.

Further, a modified example of the method of stopping suction in the paper feeding device will be described. A shutter that blocks the flow of air may be provided inside the duct of the suction device, and instead of stopping the blower motor during the setting work of the paper feed device, the shutter may be closed to stop the suction.

To determine the start of suction, instead of the "first sheet set completion switch" on the operation panel, a "sheet presence detection sensor" that detects the corrugated cardboard sheet on the paper feed table is provided, and the "sheet presence detection sensor" is the sheet. When the presence is detected, it may be determined that at least one corrugated cardboard sheet has been set, and suction may be started.
When the sheet is automatically set using the feeder device regardless of the operator, it is determined that at least one corrugated cardboard sheet has been set based on the signal sent from the feeder device, and suction is started. May be good.

Further, regarding the drive control of the upper slotter and the lower slotter, the motor that drives the slotter unit may be provided separately from the motor that drives the cleaner unit and the die cutter, and further, the motor that drives the upper slotter and the lower slotter are driven. Motors may be provided separately.

Further, with respect to the printing apparatus, the printing unit of the printing apparatus may not be provided with an elevating device and may open a gap between adjacent printing units to perform printing plate replacement work. In this case, in the "order change without replacement work", it is not necessary to open and close the gap of the printing unit for the replacement work of the printing plate, so that the setting work can be performed while the printing cylinder and the press roll are rotated. can.

1,200 Paper sheet making machine 2 Paper feeding device 4 Printing device 6 Creaser unit 6A, 6B Ruled line roll 8 Slotter unit 10 Die cutter 12 Suction box 14, 206 Front gate 16, 208 Back guide 18 Suction device 20 Paper feeding roller 22 Great 24 Feed Roll 25, 26 Printing Unit 25A, 26A Printing Cylinder 25B, 26B Printing Plate 25D, 26D Press Roll 27, 28 Slotter 27A, 28A Upper Slotter 27B, 28B Slotter Blade 27C, 28C Groove 27D, 28D Lower Slotter 29 Anvil Cylinder 30 Die cylinder 31 Punching die 32 Paper feed roller drive motor 34 Great lift motor 60, 232 Control device 62 Drive control unit 64 Feed roll drive motor control unit 66, 68 Printing cylinder drive motor control unit 70, 72 Press roll drive motor control unit 74 Clearer slotter die cutter drive motor control unit 76 Feed roll drive motor 78, 80 Print cylinder drive motor 82, 84 Press roll drive motor 86 Clearer slotter die cutter drive motor 88 Paper feed drive motor control unit 90 Great drive motor control unit 92 Paper feed device control unit 94 Blower motor 96 Front gate moving device 98 Back guide moving device 100, 102 Printing device control unit 104, 106 Elevating device 108 Clearer unit control unit 110 Cleaner gap adjusting device 112 Clearer width direction moving device 114 Slotter unit control Unit 116 Slotter clearance adjuster 118 Slotter width direction moving device 120 Slotter phase device 122 Die cutter control unit 124 Die cutter clearance adjuster 126 Slotter coupling device 202 Kicker type paper feed device 210 Kicker device 212 Kicker drive motor 220 Kicker 234 Kicker drive motor control unit

Claims (8)

A paper feed device that feeds out corrugated cardboard sheets one by one, a printing device that prints on corrugated cardboard sheets, a cleaner unit that processes corrugated cardboard sheets with ruled lines, a slotter unit that processes corrugated cardboard sheets with grooving, and these paper feed devices. , A corrugated cardboard sheet making machine having a control device for controlling a printing device, a cleaner unit, and a slotter unit.
The paper feed device includes a paper feed roller that feeds out the lowest layer corrugated cardboard sheet among the laminated corrugated cardboard sheets, a paper feed roller drive motor that rotationally drives the paper feed roller, and a paper feed roller that moves up and down with respect to the paper feed roller. It is equipped with a great that switches between a contact state and a non-contact state between the paper roller and the corrugated cardboard sheet on the bottom layer, and a great lifting device that raises and lowers this great.
The slotter unit includes an upper slotter to which a slotter blade for grooving a corrugated cardboard sheet is attached, a lower slotter having a groove formed to fit the slotter blade of the upper slotter, and these upper slotters and lower slotters. Equipped with a slotter drive motor that drives the rotation,
After the production of the current order is completed, the above control device drives the slotter drive motor to keep the upper slotter and the lower slotter rotated, and controls the great elevating device to raise the great to the ascending position and feed the paper. Preparations for producing the next order in the paper feeding device, printing device, cleaner unit, and slotter unit after the paper feeding operation is stopped with the roller and the corrugated cardboard sheet on the bottom layer in a non-contact state and the paper feeding operation is stopped. The set work, which is the work, is started, and after these set works are completed, the upper slotter and the lower slotter are kept rotated, and the great elevating device is controlled to lower the great to the lowering position to lower the paper feed roller. A corrugated cardboard sheet making machine that starts the paper feeding operation with the bottom layer corrugated cardboard sheet in contact with each other and starts the production of the next order. After the production of the current order is finished, the control device controls the great elevating device to raise the great to the ascending position so that the paper feed roller and the bottom layer corrugated sheet are in a non-contact state, and the paper feed roller drive motor is operated. The rotation of the paper feed roller is controlled to stop the paper feed operation, and after the paper feed operation is stopped, the setting work in the paper feed device, the printing device, the cleaner unit, and the slotter unit is started, and these After the setting work is completed, the Great Elevating Device is controlled to lower the Great to the lowered position so that the paper feed roller and the bottom layer of the corrugated sheet are in contact with each other, and the above paper feed roller drive motor is controlled to control the paper feed roller. The box-making machine for a cardboard sheet according to claim 1, wherein the paper feeding operation is started by rotating the paper sheet to start the production of the next order. A paper feed device that feeds out corrugated cardboard sheets one by one, a printing device that prints on corrugated cardboard sheets, a cleaner unit that processes corrugated cardboard sheets with ruled lines, a slotter unit that processes corrugated cardboard sheets with grooving, and these paper feed devices. , A corrugated cardboard sheet making machine having a control device for controlling a printing device, a cleaner unit, and a slotter unit.
The paper feed device includes a paper feed roller that feeds out the lowest layer corrugated cardboard sheet among the laminated corrugated cardboard sheets, and a paper feed roller drive motor that rotationally drives the paper feed roller.
The slotter unit includes an upper slotter to which a slotter blade for grooving a corrugated cardboard sheet is attached, a lower slotter having a groove formed to fit the slotter blade of the upper slotter, and these upper slotters and lower slotters. Equipped with a slotter drive motor that drives the rotation,
After the production of the current order is completed, the control device drives the slotter drive motor to keep the upper slotter and the lower slotter rotated, and controls the paper feed roller drive motor to stop the rotation of the paper feed roller. After the paper feeding operation is stopped, the setting work which is the preparatory work for producing the next order in the paper feeding device, the printing device, the cleaner unit, and the slotter unit is started, and these After the setting work is completed, the upper slotter and the lower slotter are kept rotated, the paper feed roller drive motor is controlled to rotate the paper feed roller, and the paper feed operation is started, and the production of the next order is started. A box making machine for corrugated cardboard sheets. A paper feed device that feeds out corrugated cardboard sheets one by one, a printing device that prints on corrugated cardboard sheets, a cleaner unit that processes corrugated cardboard sheets with ruled lines, a slotter unit that processes corrugated cardboard sheets with grooving, and these paper feed devices. , A corrugated cardboard sheet making machine having a control device for controlling a printing device, a cleaner unit, and a slotter unit.
The paper feeding device includes a kicker that feeds out the lowest layer corrugated cardboard sheet among the laminated corrugated cardboard sheets, and a kicker drive motor for reciprocating the kicker.
The slotter unit includes an upper slotter to which a slotter blade for grooving a corrugated cardboard sheet is attached, a lower slotter having a groove formed to fit the slotter blade of the upper slotter, and these upper slotters and lower slotters. Equipped with a slotter drive motor that drives the rotation,
After the production of the current order is completed, the control device drives the slotter drive motor to keep the upper slotter and the lower slotter rotated, controls the kicker drive motor to stop the reciprocating motion of the kicker, and feeds paper. After the operation is stopped and the paper feeding operation is stopped, the setting work which is the preparatory work for producing the next order in the paper feeding device, the printing device, the cleaner unit, and the slotter unit is started, and these setting operations are performed. After completion, the upper slotter and the lower slotter are kept rotated, the kicker drive motor is controlled to reciprocate the kicker to start the paper feeding operation, and the production of the next order is started. Box machine. The slotter unit further includes a slotter gap adjusting device for adjusting the vertical gap between the upper slotter and the lower slotter, and a slotter width direction moving device for moving the upper slotter and the lower slotter in the width direction.
In the setting work of the slotter unit, the control device drives the slotter drive motor to keep the upper slotter and the lower slotter rotated, and controls the slotter gap adjusting device to control the slotter blade and the lower slotter of the upper slotter. After widening the gap in the vertical direction so that the grooves do not fit, the slotter width direction moving device is controlled to move the upper slotter and the lower slotter to the grooving position of the corrugated cardboard sheet of the next order, respectively. After moving in the width direction, the upper slotter and the lower slotter are kept rotated, and the slotter gap adjusting device is controlled to narrow the gap so that the slotter blade of the upper slotter and the groove of the lower slotter are fitted. The corrugated cardboard sheet box making machine according to any one of claims 1 to 4. The slotter unit further includes a slotter width direction moving device that moves the upper slotter and the lower slotter in the width direction, and a slotter connection that connects the upper slotter and the lower slotter to fix the relative positions of the upper slotter and the lower slotter in the width direction. Equipped with equipment,
In the setting work in the slotter unit, the control device drives the slotter drive motor to keep the upper slotter and the lower slotter rotated, controls the slotter connecting device, and connects the upper slotter and the lower slotter. , The relative positions of the upper slotter and the lower slotter in the width direction are fixed, and the slotter width direction moving device is controlled to move the upper slotter and the lower slotter to the grooving position of the corrugated cardboard sheet of the next order, respectively, and move in the width direction. The corrugated cardboard sheet box-making machine according to any one of claims 1 to 4, which later controls the slotter connecting device to release the connection between the upper slotter and the lower slotter. The paper feed device further includes a paper feed table on which a corrugated cardboard sheet is placed, a suction box and a suction device for sucking the bottom layer corrugated cardboard sheet on the paper feed table downward, and a corrugated cardboard sheet on the paper feed table. The back guide that regulates the rear end, the back guide moving device that moves this back guide in the feeding direction of the corrugated cardboard sheet, and the first sheet that detects that at least one corrugated cardboard sheet is set on the paper feed table. Equipped with a sheet set detection device,
The control device controls the back guide moving device to move the back guide to a position according to the dimensions of the corrugated cardboard sheet of the next order and controls the suction device to stop the suction in the setting work in the paper feeding device. After the movement of the back guide and the stop of suction are completed, the first sheet set detection device detects that at least one corrugated cardboard sheet has been set, and after the at least one corrugated cardboard sheet is set, suction is performed. The corrugated cardboard sheet box-making machine according to any one of claims 1 to 6, wherein the apparatus is controlled to start suction. A paper feed device that feeds out corrugated cardboard sheets one by one, a printing device that prints on corrugated cardboard sheets, a cleaner unit that processes corrugated cardboard sheets with ruled lines, a slotter unit that processes corrugated cardboard sheets with grooving, and these paper feed devices. , A corrugated cardboard sheet making machine having a control device for controlling a printing device, a cleaner unit, and a slotter unit.
The paper feeding device includes a delivery mechanism that feeds out the lowest layer corrugated cardboard sheet among the laminated corrugated cardboard sheets, and a delivery mechanism drive motor that drives the delivery mechanism.
The slotter unit includes an upper slotter to which a slotter blade for grooving a corrugated cardboard sheet is attached, a lower slotter having a groove formed to fit the slotter blade of the upper slotter, and these upper slotters and lower slotters. Equipped with a slotter drive motor that drives the rotation,
After the production of the current order is completed, the control device drives the slotter drive motor to keep the upper slotter and the lower slotter rotated, controls the delivery mechanism drive motor, stops the delivery mechanism, and feeds paper. Is stopped, and after this paper feeding operation is stopped, the setting work which is the preparatory work for producing the next order in the above-mentioned paper feeding device, printing device, cleaner unit and slotter unit is started, and these setting work is completed. After that, the upper slotter and the lower slotter are kept rotated, the delivery mechanism drive motor is controlled to drive the delivery mechanism to start the paper feeding operation, and the production of the next order is started. Box machine.

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