JP5399224B2 - Bag packing machine - Google Patents

Description

The present invention is a printing process or print-inspection step is about free Murrell bag packaging machine as part of the packaging process.

FIG. 12 shows an example of a general intermittent rotation type bagging and packaging machine, in which a plurality of gripper pairs (a pair of grippers) 2 are disposed around a table 1 that rotates intermittently in one direction (the direction of a white arrow). 2 are arranged at equal intervals, and as the table 1 is intermittently rotated, the gripper pair 2 and 2 are intermittently moved along the circular transfer path, and while the gripper pair 2 and 2 are rotated once, the gripper pair 2 , 2 supply of the bag 3 (bag supply), filling of the package 3 into the bag 3 sandwiched between the side edges of the gripper pair 2, 2, sealing of the opening (bag opening) of the bag 3, etc. A packaging process is performed. The transfer path of the gripper pairs 2 and 2 is also the transfer path of the bag 3.
More specifically with reference to FIG. 12, the stop position I is a bag supply process position, and a conveyor magazine type bag supply device 4 for supplying the bags 3 to the gripper pairs 2 and 2 is arranged and supplied to the bags 3. Is a bag having an open upper edge, which is sandwiched by gripper pairs 2 and 2 on both side edges in the vicinity of the opening (bag mouth) and is suspended with the opening facing upward.

The stop position II is a printing process position, and a printing device (only the printer 5 is shown) for printing the date and the like on the bag surface of the bag 3 sandwiched between the gripper pairs 2 and 2 is arranged. If the date or the like is printed on the supplied bag 3 in advance, a print inspection device is arranged as necessary in place of the printing device, and a print inspection process is performed. In some cases, printing and print inspection are performed at the same stop position.
The stop position III is an opening process position of the upper end opening (bag mouth), and an opening device (suction cup 6) having a pair of suction members (suction cups) 6 and 6 and a pair of follow-up type opening guides 7 and 7 that can contact and separate from each other. , 6 and only the followable opening guides 7 and 7 are arranged), the stop position IV is an article filling process position, and a filling device having a hopper 8 that moves up and down (only the hopper 8 is shown) is arranged. The follow-up type opening guides 7 and 7 are inserted into the bag mouth opened at the stop position III and immediately opened to maintain the opening state of the bag mouth, and the table 1 is rotated as it is (the gripper pairs 2 and 2 and the bag 3). The hopper 8 is inserted into the bag mouth at the stop position IV and then lifts out of the bag mouth and immediately returns to the stop position III.

The stop position V is a first gas replacement process position, a first gas replacement device (only the gas injection nozzle 9 is shown) having a gas blowing nozzle 9 that moves up and down is arranged, and the stop position VI is a second gas replacement process position. A second gas displacement device (only the gas blowing nozzle 11 is shown) having a gas blowing nozzle 11 that moves up and down is arranged. At the stop position VI, the gap between the gripper pair 2 and 2 is widened and the bag mouth is tensioned.
The stop position VII is a first sealing process position, a first sealing device having only a pair of first hot plates 12 and 12 that are opened and closed (only the first hot plates 12 and 12 are shown) is disposed, and the stop position VIII is a second position. A second sealing device having a pair of second hot plates 13 and 13 (only the second hot plates 13 and 13 are shown) is disposed at a sealing process position, and a stop position IX is a sealing part cooling and product bag discharging process position. A cooling device having only a pair of cooling plates 14 and 14 (only the cooling plates 14 and 14 are shown) and a chute 15 are arranged.
The stop position X is a defective bag discharge process position, and here, a defective bag (for example, an empty bag that has not been packed due to defective opening or the like) is discharged.

At the stop position II, characters and symbols are printed on the surface of the bag (mainly ink jet type), or the printed characters and symbols are imaged by an imaging means (camera), and whether or not the printing is appropriate based on the image (Check for printing, chipping, fading, distortion, misprinting, etc.).
Patent Documents 1 and 2 describe a printing or printing inspection auxiliary device used in such a printing process or printing inspection process. The printing or printing inspection auxiliary device includes a pressing plate in which a window hole is formed surrounding a back plate and a printing portion of the bag (a printing position on the bag surface or a printed portion), and the bag is formed by the back plate and the pressing plate. In the state where the surface is sandwiched from both sides, printing is performed in the window hole or printing inspection is performed in the window hole. In this method, since the bag surface can be completely stopped by sandwiching the bag surface between the back plate and the pressing plate, it is possible to prevent printing defects or printing inspection errors due to bag shaking.

On the other hand, a normal bag is often curved such as when the bag surface is warped or wavy, and the bending direction is the length direction of the bag (the axis of bending is the bag width direction). Many (see FIG. 13A). In such a case, when the bag surface is sandwiched between the back plate and the pressing plate, the bag surface (the bag surface including the printing portion) in the window hole bulges in a convex shape (see FIG. 13B). In this state, if printing is performed on the printing unit or a printing inspection is performed on the printing unit, a printing defect or a printing inspection error may occur. In addition, since the bag surface around the printing portion is clamped over the entire circumference, wrinkles are partially generated on the pressed bag surface, and the appearance (commercial value) may be reduced.
13 (a) and 13 (b) show a curved bag shape and the structure of a conventional printing auxiliary device or printing inspection auxiliary device, where 16 is a back plate, 17 is a pressing plate, and 18 is a pressing plate 17. It is a formed window hole. Further, 2 is a gripper, 3 is a bag, and 5 is a printer or a print inspection camera.

JP 2000-109033 A Japanese Patent No. 3282803

  The present invention has been made in view of the above problems in the printing process or the printing inspection process among a series of bagging and packaging processing processes. Even when the bag surface is warped or wavy, printing failure or An object is to prevent a printing inspection error from occurring. Another object is to prevent the bag surface from wrinkling.

The present invention is a bag in which the opening side of the bag is held and transferred along a predetermined transfer path, and packaging processing steps such as filling of an object to be packaged and closing of the opening are sequentially performed in the transfer process. In a stuffing and packaging machine, a printing device (or a printing inspection process) is included before the filling process of a package as a part of the packaging processing process, and the printing device (or printing inspection process) is placed at a position where the printing process (or printing inspection process) is performed. (Or a print inspection device) and a print auxiliary device (or a print inspection auxiliary device) that holds the print portion flat by pulling and tensioning the bag surface including the print portion in the length or width direction of the bag. It is that. In some cases, both the printing process and the printing inspection process are included as part of the packaging process. Prior to printing or printing inspection by the printing apparatus or printing inspection apparatus, the auxiliary device is operated, and the printing unit is held flat. This auxiliary device can also be referred to as a bag tension holding means. In the case of a general bag as shown in FIGS. 12 and 13, the packaging process generally includes an opening process, and a printing process or / and a printing inspection process is placed before the opening process.

In the bag-filling packaging machine according to the present invention, the auxiliary device (print assisting device or print-inspection assisting device) takes a specific configuration as follows.
(1) The auxiliary device includes a back plate and a pair of bag pressing members which are arranged opposite to each other and can be separated from each other, the back plate is disposed on the back side of the bag, and the pair of bag pressing members are the front surfaces of the bag. It arrange | positions at the side, ie, the bag surface side with the said printing part ( Claims 1, 2 ). The back plate has a flat receiving surface portion corresponding to the printing portion. The pair of bag pressing members includes a bag bottom side bag pressing member and an opening side bag pressing member arranged at a predetermined interval in the longitudinal direction of the bag, and each has a pressing portion extending along the width direction of the bag. . The pressing portion of the bag bottom side bag pressing member holds the bag by sandwiching the bag bottom side position from the printing portion of the bag along the width direction of the bag between the back plate and the pressing portion of the opening side bag pressing member. Presses the position of the opening side of the bag toward the back side of the bag from the receiving surface. In the state where the bag is held by the back plate and the pressing portion of the bag bottom side bag pressing member, the pressing portion of the opening side bag pressing member is pushed beyond the receiving surface portion in the direction of the back side of the bag, thereby including the printing portion. The bag surface can be tensioned along the receiving surface of the back plate.

(2) As a more specific configuration in the case of (1) above, holding the bag between the pressing portion of the bag bottom side bag pressing member and the receiving surface portion of the back plate ( Claims 5 and 6 ), The board has a bag bottom side end surface on the bag bottom side of the receiving surface portion, and holds the bag between the pressing portion of the bag bottom side bag pressing member and the bag bottom side end surface ( Claims 7 and 8 ). Can do.
(3) In the above (1) and (2), the back plate and the bag bottom side bag pressing member relatively move toward and away from each other. In this case, as a relative movement mode, (a) the back plate is installed at a receiving position which is a fixed position, and the bag bottom side bag pressing member is separated from the bag and the holding position for holding the bag with the back plate. (B) The bag bottom side bag pressing member is installed in a holding position, which is a fixed position, and the back plate holds the bag between the bag bottom side bag pressing member and the standby position. It is possible to move between a receiving position and a standby position away from the bag. (C) A holding position where the bag bottom side bag pressing member holds the bag between the back plate and a standby position away from the bag. The back plate is movable between a receiving position for holding the bag between the bag bottom side bag pressing member and a standby position away from the bag ( Claims 3 and 4 ). . Any of the above forms may be used. On the other hand, the opening side bag pressing member is movable between a pressing position for pressing the bag in the back side direction of the bag and a standby position away from the bag, regardless of whether the back plate is actually movable. Need to be.

(4) The auxiliary device includes a back plate and a pair of bag pressing members that are opposed to each other and can be separated from each other, the back plate is disposed on the back side of the bag, and the pair of bag pressing members are on the front side of the bag, That is, they are arranged at a predetermined interval in the longitudinal direction of the bag on the side of the bag surface where the printing portion is located ( claims 9, 10 ). The back plate has a flat receiving surface portion corresponding to the printing portion, and has an opening side end surface and a bag bottom side end surface along the width direction of the bag on the opening side and the bag bottom side of the receiving surface portion, respectively. Each of the pressing members has a pressing portion extending along the width direction of the bag. When the back plate and the pair of bag pressing members approach each other, the pressing portions are provided on the opening side end surface and the bag bottom side end surface of the back plate. It is pushed over the receiving surface portion in the vicinity position. And at this time, the bag is sandwiched along the width direction of the bag between the opening side end surface and the one pressing portion, and between the bag bottom side end surface and the other pressing portion, and the back side direction of the bag together with each pressing portion The bag surface including the printing portion can be tensioned along the receiving surface portion of the back plate.

(5) The auxiliary device includes a back plate and a pair of bag pressing members that are arranged opposite to each other and can be separated from each other, the back plate is disposed on the back side of the bag, and the pair of bag pressing members are the front side of the bag, That is, they are arranged at a predetermined interval in the width direction of the bag on the side of the bag surface where the printing portion is located ( claims 11 and 12 ). The back plate has a flat receiving surface portion corresponding to the printing portion, and has left and right end surfaces along the longitudinal direction of the bag on both sides of the receiving surface portion. Each bag pressing member has a pressing portion extending along the longitudinal direction of the bag. Further, when the back plate and the pair of pressing members approach each other, each pressing portion is pushed beyond the receiving surface portion in the vicinity of the left and right end surfaces of the back plate. And at this time, the bag is sandwiched along the longitudinal direction of the bag between the left and right end surfaces and each pressing portion, and is pushed into the back side of the bag together with the pressing portion, so that the bag surface including the printing portion is Tension can be applied along the receiving surface of the back plate.
(6) In the above (4) and (5), the back plate and the pair of bag pressing members relatively move toward and away from each other. In this case, the relative movement forms can be the same as the forms (a) to (c) described in (3) above.

(7) In the above (1) to (6), the holding portion of the bag holding member and the pressing portion of the bag pressing member are formed of a rubber material ( claims 13 and 14 ).
(8) The bag applied to this bagging and packaging machine is, for example, a bag having an open upper edge, and the bagging and packaging machine suspends the bag by sandwiching both side edges of the bag with a pair of left and right grippers. It is a type that is held in a shape and is transferred along the transfer path. Further, in this bag filling and packaging machine, a plurality of pairs of grippers are arranged at equal intervals around a table that rotates intermittently, and the grippers move along a circular transfer path along with the intermittent rotation of the table. It is a stuffing and packaging machine, and a printing device (or printing inspection device) and an auxiliary device are arranged at a stop position where the printing step (or printing inspection step) is performed ( claims 15 and 16 ). In some cases, both the printing process and the print inspection process are included as part of the packaging process. In this case, the printing is performed at the printing process position, and the printing inspection is performed at an appropriate stop position (usually the printing process). It can also be carried out at the stop position next to the process position), or the printing process and the printing inspection process can be carried out at the same stop position. In the latter case, the printing device and the printing inspection device are arranged at the same stop position, and the auxiliary device serves as both printing assistance and printing inspection assistance.

According to the bagging and packaging machine according to the present invention, prior to printing or printing inspection, the bag surface including the printing portion (printing planned location or printed location) is shaped flat, so the bag surface is warped, Even in the case of undulations, it is possible to prevent a printing defect or a printing inspection error from occurring. Further, the auxiliary device does not pinch the bag surface around the printing portion with the surface, but only pulls the bag surface in the length direction of the bag or the width direction of the bag and tensions it. It is possible to prevent wrinkles from occurring.

It is a side view explaining the structure of the auxiliary device which concerns on this invention. It is the same front view. It is side surface sectional drawing explaining the operation | movement temporally. It is side surface sectional drawing which similarly demonstrates the operation | movement temporally. It is side surface sectional drawing which similarly demonstrates the operation | movement temporally. It is side surface sectional drawing explaining other structures and operation | movement of the auxiliary device which concerns on this invention with time. It is side surface sectional drawing which similarly demonstrates the operation | movement temporally. It is side surface sectional drawing which similarly demonstrates the operation | movement temporally. It is side surface sectional drawing explaining the further another structure of the auxiliary | assistant apparatus which concerns on this invention. It is a side view explaining the further another structure of the auxiliary device which concerns on this invention. FIG. It is a perspective view of the intermittent rotation type bag filling packaging machine which can apply the auxiliary device concerning the present invention. It is side surface sectional drawing which shows the structure of the curved bag shape and the conventional auxiliary device.

Hereinafter, with reference to FIGS. 1-11, the structure and operation | movement of the auxiliary | assistant apparatus (printing / printing inspection auxiliary | assistance apparatus) especially used in the printing or printing inspection process of the bagging and packaging machine which concerns on this invention are demonstrated. In addition, this auxiliary device shall be installed in the printing process position II of the intermittent rotation type bag filling and packaging machine shown in FIG.
1 and 2, the printing assist device includes a back plate 21, a bag bottom side bag pressing member 22, an opening side bag pressing member 23, a driving means (not shown, for example, an air cylinder) for the back plate 21, and a bag bottom. Driving means (air cylinder) 24 for the side bag pressing member 22 and the opening side bag pressing member 23 are provided. Reference numeral 5 denotes a printer.

  The back plate 21 is fixed to the upper end of the mounting plate 25 connected to the driving means, and is installed on the back side of the bag 3 (the bag surface side without the printing portion). Between the separated standby position (see FIG. 1) and the receiving position (see FIG. 4) for holding the bag 3 between the bag bottom side bag pressing member 22 and perpendicular to the bag surface of the bag 3 stopped in a horizontal plane. Advance and retreat in the direction. The back plate 21 has a substantially vertical flat receiving surface portion 26 corresponding to the printing portion of the bag 3 and the surrounding bag surface, and a substantially horizontal bag bottom side end surface 27 below the receiving surface portion 26 (bag bottom side). A substantially horizontal opening side end face 28 is formed on the upper side (bag opening side) of the receiving surface part 26. The horizontal width (length in the bag width direction) of the receiving surface portion 26 is formed slightly larger than the bag width. FIG. 1 shows the vertical range of the printing portion P.

  The bag bottom side bag pressing member 22 and the opening side bag pressing member 23 are installed on the surface side of the bag 3 (the bag surface side with the printing portion), and on the side facing the back plate 21 in the vertical direction (of the bag 3). It has plate-like projections extending along the horizontal direction (the width direction of the bag 3) at predetermined intervals in the longitudinal direction, that is, pressing portions 31 and 32. The pressing part 31 is located below the printing part P (bag bottom side), and the pressing part 32 is located above the printing part P (bag opening side). More specifically, the pressing portion 31 is in a lower position near the bag bottom side end surface 27 of the back plate 21, and the pressing portion 32 is in an upper position away from the opening side end surface 28. The vertical distance between the pressing portion 31 and the bag bottom side end surface 27 must be larger than the thickness of the bag 3, but as narrow as possible to hold the bag sandwiched between the pressing portion 31 and the bag bottom side end surface 27 (bag When 3 receives a force in the longitudinal direction, it is necessary to be able to hold the bag 3 to such an extent that it does not slide easily in the direction of the force. The pressing part 31 and the pressing part 32 are preferably made of rubber, for example, and it is preferable to increase the frictional force with the bag 3 made of a plastic film.

  As for the bag bottom side bag pressing member 22 and the opening side bag pressing member 23, the base portions 33 and 34 are respectively fixed to the upper and lower positions of the connection plate 35, and the connection plate 35 is fixed to the air cylinder 24 (on a machine base (not shown)). Are fixed to the tip of the piston rod 36. When the air cylinder 24 is actuated, the bag bottom side bag pressing member 22 is in a holding position (see FIG. 5) that holds the bag 3 between the standby position (see FIG. 1) away from the bag 3 and the back plate 21. Between the opening portion side bag pressing member 23, a standby position (see FIG. 1) away from the bag 3 and a pressing position (see FIG. 5) that presses the bag 3 in the back side direction (direction perpendicular to the bag surface). Are simultaneously advanced in the vertical direction to the bag surface of the stopped bag 3 in the horizontal plane.

Next, the operation of this print assisting device will be described with reference to FIGS. FIG. 3 shows a state in which the empty bag 3 is sandwiched between the gripper pairs 2 and 2, transferred to the printing process position II, and stopped at the position. At this time, the back plate 21, the bag bottom side bag pressing member 22, and the opening side bag pressing member 23 are all in the standby position. The bag 3 is curved along the longitudinal direction (vertical direction).
Subsequently, the driving means (not shown) of the back plate 21 and the air cylinder 24 are operated, the back plate 21 faces the receiving position, the bag bottom side bag pressing member 22 faces the holding position, and the opening side bag pressing member 23 presses. Move towards each position.

  FIG. 4 shows a state when the back plate 21 reaches the receiving position first and stops. The printing portion P of the bag 3 and the bag surface in the vicinity thereof are located at the position of the receiving surface portion 26 of the back plate 21. doing. At this time, the bag bottom side bag pressing member 22 and the opening side bag pressing member 23 are just before reaching the holding position or the pressing position, respectively. The tip portion of the pressing portion 31 of the bag bottom side bag pressing member 22 exceeds the position of the receiving surface portion 26 of the back plate 21, and the bag 3 is between the tip portion of the pressing portion 31 and the bag bottom side end surface 27 of the back plate 21. The position below the receiving surface portion 26 (the bottom side of the print portion P) is sandwiched along the width direction of the bag 3. At the same time, the distal end portion of the pressing portion 32 of the opening side bag pressing member 23 also passes the receiving surface portion 26 of the back plate 21 and is positioned above the receiving surface portion 26 of the bag 3 (opening side from the printing portion P). It has just started pushing toward the back side.

  Until the bag bottom side bag pressing member 22 and the opening side bag pressing member 23 reach the holding position or the pressing position from the state of FIG. The bag 3 is sandwiched between the bag bottom-side end surface 27, and the bag 3 is pulled in the moving direction of the pressing portion 32 as the pressing portion 32 moves to the pressing position at the upper position of the back plate 21. In addition, if the clearance gap between the press part 31 and the bag bottom side end surface 27 is small enough and the friction coefficient of the press part 31 and the bag bottom side end surface 27 is not small, the pinched bag 3 will be hold | maintained in the position (bag) The surface does not slide up and down). In particular, when the pressing portion 31 is made of rubber or the like and has a friction coefficient larger than that of, for example, the plastic back plate 21, as the pressing portion 31 moves to the holding position, the pinched portion of the bag 3 is located on the pressing portion 31. Pushed in the moving direction.

FIG. 5 shows a state when the bag bottom side bag pressing member 22 and the opening side bag pressing member 23 reach the holding position or the pressing position, respectively. The bag 3 is held at a position on the lower side of the receiving surface portion 26 (the bag bottom side from the printing portion P) between the pressing portion 31 of the bag bottom side bag pressing member 22 and the bag bottom side end surface 27 of the back plate 21. On the other hand, the position on the upper side of the receiving surface portion 26 (opening side from the printing portion P) is pushed to the rear side of the receiving surface portion 26 (in the direction of the back side of the bag 3), thereby including the printing portion P of the bag 3. The bag surface is held flat in tension on the receiving surface portion 26.
In this state, the printer 5 operates and printing is performed on the printing unit P.

  Thereafter, the driving means (not shown) of the back plate 21 and the air cylinder 24 are operated, and the back plate 21 and the pair of bag pressing members 22 and 23 are moved back to the original standby positions. Subsequently, the bag 3 that has undergone the printing process is transferred toward the next stop position III (opening process position), and a new bag 3 is moved from the stop position I (bag feeding process position) to the stop position II (printing process position). It is transferred to.

  6 to 8 are diagrams for explaining another printing auxiliary device and its operation. This auxiliary device has a point that the back plate 21 is fixed at the receiving position, a point that the bag bottom side bag pressing member 22 and the opening side bag pressing member 23 have independent driving means (air cylinders 24 and 37), And when the bag bottom side bag pressing member 22 moves to the holding position, it differs from the auxiliary device shown in FIGS. 1 to 5 in that the pressing portion 31 contacts the receiving surface portion 26 of the back plate 21.

FIG. 6 shows a state in which the bag 3 is sandwiched between the gripper pairs 2 and 2, transferred to the printing process position II, and stopped at the position. At this time, the back plate 21 is in the receiving position, and the bag bottom side bag pressing member 22 and the opening side bag pressing member 23 are both in the standby position. The bag 3 is curved along the length direction (vertical direction). It is necessary to set the receiving position of the back plate 21 so that there is no interference with the bag 3 being transferred.
FIG. 7 shows a state where the air cylinder 24 is activated and the bag bottom side bag pressing member 22 reaches the holding position. In this holding position, the tip of the pressing portion 31 abuts on the receiving surface portion 26 of the back plate 21 and sandwiches a position below the printing portion P of the bag 3 (position on the bag bottom side) with the receiving surface portion 26. Hold in position.

Subsequently, the air cylinder 37 is operated, and the opening side bag pressing member 23 is moved to the pressing position. FIG. 8 shows a state when the opening side bag pressing member 23 reaches the pressing position, and the position of the upper side of the receiving surface portion 26 of the bag 3 (opening side from the printing portion P) by the pressing portion 32 is shown. It is pushed into the rear side of the receiving surface part 26 (the back side of the bag 3). As a result, the bag surface including the printing portion P of the bag 3 is held flat in a tensioned state on the receiving surface portion 26, and in this state, the printer 5 operates and printing is performed on the printing portion P.
Thereafter, the air cylinders 24 and 37 are operated, and the bag bottom side bag pressing member 22 and the opening side bag pressing member 23 are retracted to the original standby position. Subsequently, the bag 3 that has undergone the printing process is transferred toward the next stop position III (opening process position), and a new bag 3 is moved from the stop position I (bag feeding process position) to the stop position II (printing process position). It is transferred to.

FIG. 9 is a view for explaining still another printing auxiliary device and its operation. In this printing assisting device, both the pressing portion 31 of the bag bottom side pressing member 22 and the pressing portion 32 of the opening side pressing member 23 are respectively positioned below the bag bottom side end surface 27 of the back plate 21 or the back plate. 21 is different from the print assisting apparatus shown in FIGS. 1 to 5 in that it is disposed at an upper position close to the opening-side end face 21 of FIG.
In this print assisting device, immediately before the bag bottom side pressing member 22 and the opening side pressing member 23 reach the pressing position shown in FIG. 9, the tip portions of the pressing portions 31, 32 of the bag pressing members 22, 23, respectively. Exceeds the position of the receiving surface portion 26 of the back plate 21, and between the front end portion of the pressing portions 31, 32 and the bag bottom side end surface 27 or the opening side end surface 28 of the back plate 21, The vertical position is sandwiched along the width direction of the bag 3.

Subsequently, until the bag bottom side bag pressing member 22 and the opening side bag pressing member 23 reach the pressing position, the bag 3 is positioned between the pressing portion 31 and the bag bottom side end surface 27 at a position below the back plate 21. The bag 3 is sandwiched between the pressing portion 32 and the opening-side end surface 28 at a position above the back plate 21. The clearance between the pressing portion 31 and the bag bottom side end surface 27 of the back plate 21 and the clearance between the pressing portion 32 and the opening side end surface 28 of the back plate 21 are sufficiently small, and the pressing portions 31 and 32 are made of rubber or the like and have a large friction coefficient. For example, as the pressing portions 31 and 32 move to the pressing position, the pinched portion of the bag 3 is pushed in the moving direction of the pressing portions 31 and 32. As a result, the bag surface including the printing portion P of the bag 3 is held flat on the receiving surface portion 26 in a tensioned state.
In this state, the printer 5 operates and printing is performed on the printing unit P.

  10 and 11 are diagrams for explaining still another printing auxiliary device and its operation. This print assisting device is the same as the print holding device described so far in that it includes a back plate 21 and a pair of bag pressing members 22, 23 that are opposed to each other and can be brought into contact with each other. (The width of the receiving surface portion 26) is considerably smaller than the bag width, and has left and right end surfaces 38, 39 along the longitudinal direction of the bag 3 on both sides of the receiving surface portion 26, and the bag pressing members 22, 23 are the width of the bag 3. They are arranged at predetermined intervals (slightly larger than the width of the receiving surface portion 26) in the direction, and both are different in that they have pressing portions 31 and 32 extending along the longitudinal direction of the bag 3.

The back plate 21 is a bag of the bag 3 in a horizontal plane between a standby position (see FIG. 10) separated from the bag 3 and a front receiving position (see FIG. 11) by a driving means (for example, an air cylinder) not shown. Advances and retracts perpendicular to the surface. The pressing portions 31 and 32 move back and forth in a vertical direction with respect to the bag surface of the bag 3 in a horizontal plane between a standby position (see FIG. 10) separated from the bag 3 and a front pressing position (see FIG. 11).
When the back plate 21 and the bag pressing members 22 and 23 are moved from the standby position to the receiving position or the pressing position, the pressing portions 31 and 32 are pushed outside the end surfaces 38 and 39 of the back plate 21 as shown in FIG. The distance between the end faces 38 and 39 of the back plate 21 and the pressing portions 31 and 32 at that time is set to be very narrow although it is wider than the thickness of the bag 3. This interval is the same as that of the print assisting device shown in FIG.

  9, the left and right portions of the back plate 21 of the bag 3 move along the longitudinal direction of the bag 3 as the pressing portions 31 and 32 move to the pressing position. Between the end surface 38 and the end surface 38 and between the pressing portion 32 and the end surface 39, the pressing portions 31 and 32 are pushed in the moving direction (the back side of the bag 3) while being sandwiched. As a result, the bag surface including the printing portion P of the bag 3 is held flat on the receiving surface portion 26 in a tension state in the bag width direction.

According to the above-described printing assist device, the following operational effects can be obtained in addition to the matters described in the column of [Effects of the invention].
(1) Like the auxiliary device shown in FIGS. 1 to 5, by using a common drive means (air cylinder) for the pair of pressing members, the device can be made compact and the cost can be reduced. The effect of tensioning can be obtained efficiently.
(2) By forming the pressing part of the pressing member with a rubber material, the frictional force with the bag (plastic) can be increased, and the bag surface can be prevented from slipping when the bag surface is sandwiched between the back plate, A reliable tension action can be obtained.
(3) Since the drive means is composed of an air cylinder, the air pressure supplied to the air cylinder can be adjusted to absorb the repulsive force of the bag (when the bag is tensioned, an excessive tensile force is not applied to the bag), Damage to the bag during pressing can be suppressed.

In addition, the auxiliary device (printing or print inspection auxiliary device) according to the present invention is not limited to the above example, and various modifications such as those described below are possible.
(1) In the above example, the application of the auxiliary device to the printing process has been described, but it can be applied to the printing inspection process in exactly the same manner. For example, when the print inspection is performed at the stop position before the opening process of the bag mouth, the print inspection device and the print inspection auxiliary device are installed at the stop position. This includes the case where printing is performed at the printing process position and printing inspection is performed at an appropriate stop position before the opening process position (usually, the stop position next to the printing process position is selected). A printing device and a printing auxiliary device are installed at the printing process position, and a printing inspection device and a printing inspection auxiliary device are installed at the printing inspection process position. In addition, the printing process and the printing inspection process can be performed at the same position. In this case, a printing apparatus, a printing inspection apparatus, and an auxiliary device (shared printing assistance and printing inspection assistance) are installed at the position.

(2) Considering the case where the position of the printing unit is changed, it is desirable that the position of the back plate, the bag pressing member, the pressing unit, and the like can be adjusted.
(3) The bag bottom side of the bag is sandwiched between chucks arranged at the printing process position or the printing inspection process position, pulled to the bag bottom side (downward), and the bag surface in the longitudinal direction of the bag with the gripper on the opening side Tighten or pull the left and right sides (both side edges) of the printed part of the bag between a pair of chucks opposed to the above position and pull it to the left and right to tension the bag surface in the width direction of the bag between the two chucks. The present invention also includes a case where a print inspection is performed.

(4) In the above example, the present invention is an intermittent in which the normal bag is transferred along a circular transfer path with the opening (bag opening) facing upward, and various packaging processing steps are sequentially performed in the process. Applicable to rotary bagging and packaging machines, but including intermittent transport type vertical type (such as a bag sandwiched by a gripper with the bag mouth facing upward), including packaging machines with racetrack-type transfer paths or linear transfer paths. In addition to being able to be applied to bag packing and packaging machines in general, it can be applied to general bagging and packaging machines, as well as continuous transfer (types that transfer bags continuously) bag packing and packaging machines, horizontal (with the bag mouth facing sideways) Type that transports bags and performs various packaging processes) Bag filling and packaging machine, and bag filling and packaging machine that fills the contents of a bag with a spout as an opening (holds both sides of the bag with grippers and transfers them) Spat part instead Also held in the groove of the preparative holding member transporting) and the like are applicable. In the case of the continuous transfer type, it is necessary to cause the auxiliary device itself to follow the transfer of the bag and to return to the original position after the printing or the print inspection is completed.

3 Bag 5 Printer 21 Back Plates 22 and 23 Bag pressing member (bag bottom side bag pressing member, opening side bag pressing member)
26 Back plate receiving surface portion 27 Back plate bag side end surface 28 Back plate opening side end surface 31, 32 Pressing portion

Claims (16)

In a bagging and packaging machine that holds the opening side of the bag and transfers it along a predetermined transfer path, and sequentially performs packaging processing steps such as filling of an object to be packaged and closing of the opening in the process of transfer. A printing process is included as a part of the packaging process before the filling process of the package, and the bag surface including the printing device and the printing unit is placed in the bag length direction or at a position where the printing process is performed. A printing auxiliary device is provided that pulls and tensions in the width direction to hold the printing unit in a flat state, and the printing auxiliary device includes a back plate and a pair of bag pressing members that are opposed to each other and can be separated from each other. The back plate is disposed on the back surface side of the bag, has a flat receiving surface portion corresponding to the printing portion, and the pair of bag pressing members are on the front surface side of the bag, that is, on the bag surface side with the printing portion. Bag bottom side bag press arranged at predetermined intervals in the longitudinal direction of the bag Each of which has a pressing portion extending along the width direction of the bag, and the pressing portion of the bag bottom side bag pressing member is between the back plate and the printing portion of the bag. The position of the bag bottom side is held along the width direction of the bag to hold the bag, and the pressing portion of the opening side bag pressing member presses the position of the opening side of the bag toward the back side of the bag from the receiving surface portion. The pressing portion of the opening side bag pressing member is pushed beyond the receiving surface portion in the back side direction of the bag in a state where the bag is held by the pressing portion of the back plate and the bag bottom side bag pressing member. Filling Me packaging machine and said. In a bagging and packaging machine that holds the opening side of the bag and transfers it along a predetermined transfer path, and sequentially performs packaging processing steps such as filling of an object to be packaged and closing of the opening in the process of transfer. As a part of the packaging process, a printing inspection process is included before the filling process of the package, and at the position where the printing inspection process is performed, the bag surface including the printing inspection device and the printing unit is placed on the length of the bag. A print inspection assisting device is disposed that is tensioned by pulling in the width direction or the width direction, and holds the printing unit in a flat state. The print inspection assisting device is arranged to face each other and to be separated from each other. The back plate is disposed on the back side of the bag and has a flat receiving surface portion corresponding to the printing portion, and the pair of bag pressing members are on the front side of the bag, that is, on the printing portion. Arranged at a certain interval in the longitudinal direction of the bag on the side of the bag The bag bottom side bag pressing member and the opening side bag pressing member each have a pressing portion extending along the width direction of the bag, and the pressing portion of the bag bottom side bag pressing member is between the back plate The bag is held by sandwiching the position of the bag bottom side from the printing part of the bag along the width direction of the bag, and the pressing part of the opening side bag pressing member positions the opening side of the bag from the receiving surface part. The pressing portion of the opening side bag pressing member is moved toward the back side of the bag while the bag is held by the pressing portion of the back plate and the bag bottom side bag pressing member. Filling Me packaging machine, characterized by being pushed beyond the surface. The back plate is installed at a receiving position which is a fixed position, and the bag bottom side bag pressing member is movable between a holding position for holding the bag between the back plate and a standby position away from the bag. The bag bottom side bag pressing member is installed in a holding position which is a fixed position, and the back plate is in a standby position away from the bag and the receiving position for holding the bag between the bag bottom side bag pressing member and the bag bottom side bag pressing member. The bag bottom side bag pressing member is movable between a holding position where the bag bottom side bag pressing member holds the bag with respect to the back plate and a standby position apart from the bag, and The back plate is either movable between a receiving position for holding the bag between the bag bottom side bag pressing member and a standby position away from the bag, and further, the opening side bag pressing The member is movable between a pressing position where the member presses the bag in the direction of the back surface and a standby position away from the bag. Bag-filling packaging machine according to claim 1, characterized in that there. The back plate is installed at a receiving position which is a fixed position, and the bag bottom side bag pressing member is movable between a holding position for holding the bag between the back plate and a standby position away from the bag. The bag bottom side bag pressing member is installed in a holding position which is a fixed position, and the back plate is in a standby position away from the bag and the receiving position for holding the bag between the bag bottom side bag pressing member and the bag bottom side bag pressing member. The bag bottom side bag pressing member is movable between a holding position where the bag bottom side bag pressing member holds the bag with respect to the back plate and a standby position apart from the bag, and The back plate is either movable between a receiving position for holding the bag between the bag bottom side bag pressing member and a standby position away from the bag, and further, the opening side bag pressing The member is movable between a pressing position where the member presses the bag in the direction of the back surface and a standby position away from the bag. Bag-filling packaging machine according to claim 2, characterized in that there. The bag filling and packaging machine according to claim 1 or 3 , wherein the bag is held between a pressing portion of the bag bottom side bag pressing member and a receiving surface portion of the back plate. The bag filling and packaging machine according to claim 2 or 4 , wherein the bag is held between a pressing portion of the bag bottom side bag pressing member and a receiving surface portion of the back plate. Claims wherein the back plate has a Fukurosoko side end face on the bag bottom side of the receiving face, characterized in that for holding the bag between the pressing portion of the bag bottom-side bag pressing member the bag bottom-side end surface The bagging and packaging machine described in 1 or 3 . Claims wherein the back plate has a Fukurosoko side end face on the bag bottom side of the receiving face, characterized in that for holding the bag between the pressing portion of the bag bottom-side bag pressing member the bag bottom-side end surface The bagging and packaging machine described in 2 or 4 . In a bagging and packaging machine that holds the opening side of the bag and transfers it along a predetermined transfer path, and sequentially performs packaging processing steps such as filling of an object to be packaged and closing of the opening in the process of transfer. A printing process is included as a part of the packaging process before the filling process of the package, and the bag surface including the printing device and the printing unit is placed in the bag length direction or at a position where the printing process is performed. A printing auxiliary device is provided that pulls and tensions in the width direction to hold the printing unit in a flat state, and the printing auxiliary device includes a back plate and a pair of bag pressing members that are opposed to each other and can be separated from each other. The back plate is disposed on the back side of the bag, has a flat receiving surface portion corresponding to the printing portion, and has an opening portion along the width direction of the bag on the opening side and the bag bottom side of the receiving surface portion, respectively. A side end face and a bag bottom end face, and the pair of bag pressing members are The back side and the pair of bag presses are provided on the surface side, that is, on the bag surface side where the printing unit is located, at a predetermined interval in the longitudinal direction of the bag, each having a pressing portion extending along the width direction of the bag. When the members approach each other, each pressing portion of the pair of bag pressing members is pushed beyond the receiving surface portion in the vicinity of the opening side end surface and the bag bottom side end surface of the back plate. When the bag is sandwiched along the width direction of the bag between the opening-side end surface and the one pressing portion, and between the bag bottom-side end surface and the other pressing portion, the bag and the pressing portion together with the pressing portion Filling Me packaging machine, characterized by being pushed. In a bagging and packaging machine that holds the opening side of the bag and transfers it along a predetermined transfer path, and sequentially performs packaging processing steps such as filling of an object to be packaged and closing of the opening in the process of transfer. As a part of the packaging process, a printing inspection process is included before the filling process of the package, and at the position where the printing inspection process is performed, the bag surface including the printing inspection device and the printing unit is placed on the length of the bag. A print inspection assisting device is disposed that is tensioned by pulling in the width direction or the width direction, and holds the printing unit in a flat state. The print inspection assisting device is arranged to face each other and to be separated from each other. The back plate is disposed on the back side of the bag, has a flat receiving surface portion corresponding to the printing portion, and the width direction of the bag on the opening side and the bag bottom side of the receiving surface portion, respectively. Along the opening side end face and the bag bottom side end face. The bag pressing member is disposed at a predetermined interval in the longitudinal direction of the bag on the surface side of the bag, i.e., on the bag surface side with the printing portion, and has a pressing portion that extends along the width direction of the bag, When the back plate and the pair of bag pressing members approach each other, the pressing portions of the pair of bag pressing members are pushed beyond the receiving surface portion at positions near the opening side end surface and the bag bottom side end surface of the back plate. At this time, the bag is sandwiched along the width direction of the bag between the opening side end surface and the one pressing portion, and between the bag bottom side end surface and the other pressing portion, and the pressing portion Filling Me packaging machine, characterized in that with pushed on the back side direction of the bag. In a bagging and packaging machine that holds the opening side of the bag and transfers it along a predetermined transfer path, and sequentially performs packaging processing steps such as filling of an object to be packaged and closing of the opening in the process of transfer. A printing process is included as a part of the packaging process before the filling process of the package, and the bag surface including the printing device and the printing unit is placed in the bag length direction or at a position where the printing process is performed. A printing auxiliary device is provided that pulls and tensions in the width direction to hold the printing unit in a flat state, and the printing auxiliary device includes a back plate and a pair of bag pressing members that are opposed to each other and can be separated from each other. The back plate is disposed on the back side of the bag, has a flat receiving surface portion corresponding to the printing portion, and has left and right end surfaces along the longitudinal direction of the bag on both sides of the receiving surface portion, respectively. The pair of bag pressing members is the front side of the bag, that is, the printing unit. It is arranged at a certain bag surface side at a predetermined interval in the width direction of the bag, both have a pressing portion extending along the longitudinal direction of the bag, and when the back plate and the pair of bag pressing members approach each other, The pressing portions of the pair of bag pressing members are pushed beyond the receiving surface portion in the vicinity of the left and right end surfaces, and at this time, the bag is disposed in the longitudinal direction of the bag between the left and right end surfaces and the pressing portions. along sandwiched, bagged Me packaging machine, characterized in that pressed into the rear face-side direction of the bag with the pressing portion. In a bagging and packaging machine that holds the opening side of the bag and transfers it along a predetermined transfer path, and sequentially performs packaging processing steps such as filling of an object to be packaged and closing of the opening in the process of transfer. As a part of the packaging process, a printing inspection process is included before the filling process of the package, and at the position where the printing inspection process is performed, the bag surface including the printing inspection device and the printing unit is placed on the length of the bag. A print inspection assisting device is disposed that is tensioned by pulling in the width direction or the width direction, and holds the printing unit in a flat state. The print inspection assisting device is arranged to face each other and to be separated from each other. The back plate is disposed on the back side of the bag, has a flat receiving surface portion corresponding to the printing portion, and is provided on both sides of the receiving surface portion along the longitudinal direction of the bag. An end face, and the pair of bag pressing members are on the front side of the bag That is, it is disposed on the bag surface side where the printing unit is located at a predetermined interval in the width direction of the bag, both have a pressing portion extending along the longitudinal direction of the bag, and the back plate and the pair of bag pressing members are When approaching, the pressing portions of the pair of bag pressing members are pushed beyond the receiving surface portion in the vicinity of the left and right end surfaces, and at this time, the bag is placed between the left and right end surfaces and the pressing portions. sandwiched along the longitudinal direction of the bag, bagging Me packaging machine, characterized in that pressed into the rear face-side direction of the bag with the pressing portion. The bag filling and packaging machine according to any one of claims 1, 3 , 5 , 7 , 9 , and 11 , wherein the pressing portion of the bag pressing member is formed of a rubber material. The bag filling and packaging machine according to any one of claims 2 , 4 , 6 , 8 , 10 , and 12, wherein the pressing portion of the bag pressing member is formed of a rubber material. The bag is a bag with an open upper edge, and the bag filling and packaging machine holds the bag in a suspended state by sandwiching both side edges of the bag with a pair of left and right grippers, and transfers the bag along the transfer path. In the bag filling and packaging machine, a plurality of pairs of grippers are arranged at regular intervals around a table that rotates intermittently, and the grippers move along a circular transfer path along with the intermittent rotation of the table. It is a rotary bagging and packaging machine, and a printing device and a printing auxiliary device are arranged at a stop position where the printing process is performed, 1, 3, 5, 7, 9, 11, 13. A bagging and packaging machine described in any of the above. The bag is a bag with an open upper edge, and the bag filling and packaging machine holds the bag in a suspended state by sandwiching both side edges of the bag with a pair of left and right grippers, and transfers the bag along the transfer path. In the bag filling and packaging machine, a plurality of pairs of grippers are arranged at regular intervals around a table that rotates intermittently, and the grippers move along a circular transfer path along with the intermittent rotation of the table. It is a rotary bagging and packaging machine, and a print inspection device and a print inspection auxiliary device are arranged at a stop position where the print inspection process is performed . The bagging and packaging machine described in any one of 12 and 14 .

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