JP2594444Y2 - Bag laying equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention is used for laying a bag made of synthetic resin or paper inside a box having an open top surface made of an appropriate material such as corrugated paper or synthetic resin. Bag laying device to be used.

[0002]

2. Description of the Related Art Conventionally, as a bag laying apparatus for laying a packaging bag in a corrugated cardboard box as described above, for example, as shown in FIG. 12, a synthetic resin tubular film f wound in a roll shape is used. Is fed in the vertical direction, the tubular film f is welded in the width direction by the heating head H arranged in the upper part at the same position, and the tubular film f is spread in the width direction by the cutting cutter C arranged in the lower part at the same position. By cutting, one packaging bag F is separated and formed. At the same time, the left and right suction pads D, D arranged at the lower part of the same position suck and hold both ends of the opening side of the packaging bag F, and separate the suction pads D, D in the left and right direction to insert the packaging bag F. The mouth Fa is opened to an appropriate size. Thereafter, the packaging bag F sucked and held by the left and right suction pads D, D is horizontally moved above the cardboard box B, and the suction holding by the suction pads D, D is released, and the packaging bag F is placed in the cardboard box B. There is a device for laying F.

[0003]

However, when the packaging bag F is formed by appropriately separating the synthetic resin tubular film f into a size as described above, the moisture or oil adhering at the time of forming the film, or Since the charging port Fa of the packaging bag F adheres closely due to static electricity generated when the film is fed, immediately after the separation, the charging port Fa of the packaging bag F is connected to each of the left and right suction pads D, D.
When the suction is performed, the input port Fa of the packaging bag F is adsorbed to one of the suction pads D, and it is difficult to open the input port Fa of the packaging bag F to an appropriate size. and,
Since the insertion opening Fa of the packaging bag F is inserted into the cardboard box B with the opening closed, the insertion opening Fa of the packaging bag F must be opened one by one by a worker's hand, which requires time and labor for laying the bag. There is a problem that it takes time.

[0004] In view of the above problem, the present invention lays an appropriately sized bag formed inside a box by injecting an appropriate amount of air into a cylindrical film supplied on a feeding path. It is an object of the present invention to provide a bag laying device capable of performing work reliably, saving labor and improving efficiency.

[0005]

According to the present invention, a synthetic resin tubular film supplied on a feeding path is separated and formed into an appropriate size, and the separated and formed bag is opened to an appropriate size. A bag laying device for laying inside a box body, wherein a tip of a nozzle is pierced in front of a separation position set on the above-mentioned feeding path, facing a cylindrical film supplied on the feeding path.
Characterized in that with a bag laying device provided with air injection means for a proper amount injected air.

[0006]

According to the present invention, an appropriate amount of air is injected by an air injection means by piercing the tip of the nozzle into the inside of the cylindrical film supplied on the feeding path, so that the cylindrical film is adhered by the appropriately injected air. The parts are reliably separated, and the work of laying the bag formed separately in an appropriate size inside the box can be easily performed.

[0007]

[Effect of the invention] According to the invention, the tip of the nozzle is filled.
Piercing the air and injecting air into the cylindrical film
Air can be injected into the cylindrical film, and the contact portion of the tubular film can be reliably separated by the injected air, so that the opening of the bag formed separately in an appropriate size can be reliably opened by the bag opening means. It is possible to lay the bag inside the box with the opening of the opening of the bag open, eliminating the trouble and work of separating the contact portion of the tubular film by the operator's hand as in the conventional example, The work of supplying a film-like film and the work of laying a bag can be performed mechanically, which can save labor and increase efficiency.

[0008]

An embodiment of the present invention will be described in detail below with reference to the drawings. The drawing shows a bag laying apparatus used for laying a synthetic resin packaging bag in a corrugated cardboard box assembled in an upper surface opening form as an example of a box. In FIG. A film feeding mechanism 2 for supplying a synthetic resin cylindrical film f from the separation position set on the feeding path toward the opening position, and a cylindrical film f supplied to the separation position on the same path being appropriately sized. A film separating mechanism 3 for separating and forming, a bag opening mechanism 4 for opening a charging port Fa of the packaging bag F supplied to the opening position on the same path, and a charging port for the packaging bag F opened by the bag opening mechanism 4 A bag holding mechanism 5 for holding Fa and reversing a downward posture, a bag pushing mechanism 6 for expanding a packaging bag F reversed for a downward posture to a size corresponding to the cardboard box B, and a packaging reversed for a downward posture. One where bag F is inserted Composed of a cardboard box B of the box lifting mechanism 7 for rising perpendicular to.

As shown in FIG. 2, the above-mentioned film feeding mechanism 2 winds a cylindrical film f formed of a synthetic resin film such as polyvinyl chloride, polyethylene or the like into a roll by gusset folding or flat folding. At the same time, a cylindrical film f wound in the same roll shape is loaded in a roll loading section 8 arranged at the start end of the feeding path.

A mounting frame 9 is slidably mounted at a separation position on the payout path, and a feed roll 10 is provided at a lower front end of the mounting frame 9 so as to face a pressing roll 11 described later.
Is rotatably mounted on a shaft, and the piston rod of the pressing cylinder 12 fixed to the upper front end of the mounting frame 9 is attached to the bracket 1.
3 and a pressing roll 1 between the left and right ends of the bracket 13 facing the feed roll 10 described above.
1 is rotatably mounted on a shaft. That is, by the operation of the pressing cylinder 12, the pressing roll 11 is moved up and down in a direction in contact with the above-described upper peripheral surface of the feed roll 10, and the upper and lower surfaces of the cylindrical film f supplied to the same position are each roll 1
0, 11 and hold in the width direction.
The rolls 10 and 11 are rotated synchronously in the film feed direction via the sprockets 15 and 16 and the drive chain 17 by the driving force of the feed motor 14 fixed to the upper front end of the roll.

The guide rolls 18 and 19 and the dancer roll 20 are mounted on a pay-out path in front of the separating position, and a feed roll 21 is rotatable in front of the dancer roll 20 in opposition to a pressing roll 22 to be described later. The swinging arms 24, 24 are fixed to the left and right ends of a support shaft 23, which is mounted on the side of the same position, and the feed roll described above is provided between the free ends of the swinging arms 24, 24. A pressure roll 22 is rotatably mounted on a shaft facing the pressure roller 21, and a piston rod of a pressure cylinder 25 mounted on the upper portion of the pressure roller 22 is pivoted to one swing arm 24.
It is connected to. That is, by the operation of the pressing cylinder 25, the pressing roll 22 is moved up and down in a direction in contact with the above-described upper peripheral surface of the feed roll 21, and the upper and lower surfaces of the cylindrical film f supplied to the same position are each rolled. , 22 in the width direction, and each sprocket 27, 28 is driven by the driving force of a feed motor 26 fixed below the same position.
Then, the rollers 21 and 22 are synchronously rotated in the film feed direction via the drive chain 29.

As shown in FIGS. 6 and 7, an air supply means such as a compressor (not shown) is provided in opposition to the overlapping surface of the cylindrical film f supplied on the feeding path in front of the separation position. An air nozzle 30 connected to the injection nozzle 31 is provided, and the air nozzle 30 is fixed to the end of the piston rod of the injection cylinder 31 fixed to the side of the same position. The air nozzle 30 is moved back and forth between a forward position where the nozzle tip is pierced with respect to the cylindrical film f and a retracted position where the feeding operation of the cylindrical film f is allowed.

The above-mentioned film separating mechanism 3 has a rodless cutting cylinder 32 fixed to the lower rear end of a mounting frame 9 installed at a separation position on a feeding path, and a pressing head described later is mounted on the cutting cylinder 32. A cutting cutter 33 is slidably mounted on the cutting cutter 33 so as to be slidable left and right. The receiving plates 34 and 35 are provided at front and rear positions of the cutting cutter 33 so as to face a heating head 38 and a pressing head 41 described later. And a pressing cylinder 3 fixed to the upper rear end of the mounting frame 9.
6 is connected to the center of the upper surface side of the bracket 37, and the heating head 38 is fixed to the lower rear end of the bracket 37 so as to face the above-described receiving plate 35, and the lower front end of the bracket 37 is fixed. The pressing head 41 is fixed via the respective guide shafts 39 and the respective compression springs 40 to the cylindrical film f which is fed to the rear end of the pressing head 41 immediately after the welding position of the heating head 38 described above. A pressing frame 42 is provided continuously facing the upper surface side.

That is, by the operation of the cutting cylinder 32, the cutting cutter 33 is moved right and left in a direction of cutting the tubular film f pressed and held by the receiving plates 34 and 35 and the pressing head 41 in the width direction. By the operation of the pressing cylinder 36, the lowering position where the welding portion and the cutting portion of the cylindrical film f supplied to the separation position on the feeding path are pressed and held, and the raising position where the feeding operation of the cylindrical film f is allowed. At this time, the heating head 38 and the pressing head 41 are moved up and down.

A guide plate 43 for feeding out and guiding the tubular film f toward a feeding conveyor 45, which will be described later, is provided obliquely at the center of the rear end side of the mounting frame 9 so that the rear of the bracket 37 attached to the lower part of the frame. For example, an air nozzle 44 connected to an air supply means (not shown) such as a compressor is fixed in the lower part on the end side in the film feeding direction, and the feeding operation of the cylindrical film f by pressurized air discharged from the air nozzle 44 is performed. Guide. The above-mentioned feeding conveyor 45 has a drum-type pulley 47 fixed on a support shaft 46 which is mounted below a separation position on a feeding path, and each pulley is mounted on a support shaft 48 which is mounted below an opening position on the same path. And five feed belts 50 between the pulley 47 and each pulley 49.
… And a feed motor 51 arranged at the lower part on the starting end side
Are rotated in the film feed direction via the sprockets 52 and 53 and the drive chain 54, and the tubular film f fed and supplied from the film feeding mechanism 2 is fed to each feed belt 50. ... and is transported until the leading end of the tubular film f reaches the opening position on the feeding path.

A guide plate 55 for inserting and guiding the packaging bag F toward the inside of a cardboard box B on a box feed conveyor 94, which will be described later, is provided obliquely below the terminal side of the feed conveyor 45. For example, an air nozzle 56 connected to an air supply means (not shown) such as a compressor is fixed in the lower part in the film feeding direction, and the inserting operation of the packaging bag F is guided by pressurized air discharged from the air nozzle 56. .

As shown in FIGS. 2 and 3, the bag opening mechanism 4 vertically supports two guide shafts 57 on both left and right sides of the opening position set on the feeding path. The left and right ends of the support plate 58 are slidably mounted on the upper ends of the guide shafts 57, 57, and the slide plates 59, 59 are slidably mounted on the upper surface of the support plate 58. Attachment pads 62, 62 are attached to the rear ends 59, 59 via guide shafts 60 and compression springs 61, respectively. Each of the guide chains 65, 63 is located between the left and right sprockets 63, 63 pivotally supported at the upper portion of the same position and the left and right sprockets 64, 64 pivotally supported at the lower portion of the same position.
One end of the supporting plate 58 is connected to the end of each of the guide chains 65 and 65 by connecting the end of the guide chain 65 to the front end of the supporting plate 58. And a lowering position for adsorbing and holding the upper surface of the opening side of the cylindrical film f supplied to the opening position on the feeding path by the operation of the lifting / lowering cylinder 66, and an opening side of the cylindrical film f. Each of the suction pads 62 is moved up and down to a rising position where the upper surface is opened upward.

A mounting plate 67 is fixed to the center of a support shaft 48 which is suspended below the opening position on the feeding path, and a piston rod of a lifting / lowering cylinder 68 fixed to the front side of the mounting plate 67 is supported by a supporting plate. The slide plates 70, 70 are slidably mounted on the upper surface side of the support plate 69, and the guide shafts 71,. Each suction pad 73 is attached via a compression spring 72..., And the piston rod of the turning cylinder 74 attached to the side at the same position is attached to the support shaft 48.
Is connected to a swivel arm 75 fixed to one end.

That is, by the operation of the turning cylinder 74, the horizontal position where the lower surface side suction portion of the cylindrical film f supplied to the opening position on the feeding path is sucked and held, and the package held by the bag holding mechanism 5 described later. The suction pads 73, 73 are turned up and down to a retracted position where the reversal operation of the bag F is allowed. Further, when the rotation of the cylindrical film f is stopped at the horizontal position, the raising and lowering cylinder 68 operates to adsorb and hold the lower surface portion of the cylindrical film f supplied to the opening position on the feeding path on the opening side; The suction pads 73, 73 are moved up and down to a lower position where the lower surface of the opening f is opened downward. At the same time, when the suction pads 62 and 73 are brought into close contact with the upper and lower surfaces of the cylindrical film f supplied to the opening position on the feeding path, the negative pressure of a vacuum pump (not shown) connected to the suction pads 62 and 73 is applied. To hold the tubular film f by suction,
When the inlet Fa of the packaging bag F is held by the bag holding mechanism 5 described later, the negative pressure of the vacuum pump (not shown) connected to the suction pads 62 and 73 is shut off or stopped to release the suction holding. The upper and lower suction pads 62 and 73 are slightly eccentrically attached.

As shown in FIGS. 3 and 4, the above-mentioned bag holding mechanism 5 pushes a bag to be described later into a height position facing the input port Fa of the packaging bag F opened by the above-mentioned bag opening mechanism 4. A rectangular rotating frame 76 formed in a size and shape that allows the plate to move up and down is rotatably supported, and the piston rod of the turning cylinder 77 attached to the side at the same position is rotated by the rotating frame 76.
Is connected to a turning arm 78 fixed to one side shaft portion, and by the operation of the turning cylinder 77, a sideways posture for holding the input port Fa of the packaging bag F opened by the bag opening mechanism 4 described above, and which will be described later. The entire rotating frame 76 is rotated by 90 degrees to the downward position in which the packaging bag F is inserted into the cardboard box B supplied on the box feeding conveyor 94.

The above-mentioned rotary frame 76 is connected with piston rods of the moving cylinders 79, 79 fixed to the central portion facing surfaces of the frame to the central portions of the upper surfaces of the mounting plates 80, 80, respectively.
Each slide plate 81,
81 is slidably mounted. In addition, the respective support shafts 82, 82 which are mounted on the lower surface side of the respective slide plates 81, 81.
The two folded claws 83, 83 are respectively attached to the left and right end portions so as to be slidably adjustable, and the gears 84, 84 are attached to one end of each of the support shafts 82, 82 mounted on the respective slide plates 81, 81. Each open / close cylinder 85, 8 fixed to the same side end
Fix each rack 86, 86 to the piston rod of No. 5,
Each gear 84, 84 and each rack 86, 86 mesh with each other.

That is, when the entire frame is turned to a horizontal position and stopped, each of the moving cylinders 79, 79 is actuated, and each of the left and right sides of the input opening Fa of the packaging bag F opened by the bag opening mechanism 4 described above. When the folding claws 83 are moved back and forth in the insertion direction and the entire frame is turned and stopped in the downward position, the packaging bag is placed on each of the flaps Ba of the cardboard box B vertically raised by the box lifting mechanism 7 described later. It moves up and down in the direction in which the inlet Fa of F is covered. Each opening and closing cylinder 85, 85
And a closed position in which the packaging bag F is opened by the above-described bag opening mechanism 4 and is allowed to be inserted into the insertion port Fa.
The left and right folding claws 83, 83 are opened and closed and rotated to the opening position where the opening Fa of the packaging bag F is opened to the size covered with each flap Ba of the cardboard box B described later.

Each of the movable pieces 88, 88 is provided at an intermediate portion of each of the support shafts 82, opposed to the piston rod of each of the closing angle cylinders 87, 87 fixed to the lower surface side central portion of each of the slide plates 81, 81. Are fixed, and the opening Fa of the packaging bag F held by the same mechanism is covered with each flap Ba of the cardboard box B, the closing angle cylinders 87, 87 are operated, and the respective support shafts 8 are operated.
The left and right folding claws 83, 83 fixed to the slide plates 81, 82 are slightly rotated inward, and the left and right ends of the support shafts 82, 82, which are mounted on the slide plates 81, 81, are, for example, compressors or the like. Connected to the air supply means (not shown) are fixed toward the inlet Fa of the packaging bag F, and the packaging bag F is expanded in four directions by pressurized air discharged from the air nozzles 89. I do.

The above-mentioned bag pushing mechanism 6 has a piston rod of a pushing cylinder 91 vertically fixed to the attaching frame 90 by mounting a mounting frame 90 above the turning position of the rotating frame 76 constituting the bag holding mechanism 5 described above. Is formed in a size and shape corresponding to the inner bottom surface of the cardboard box B.
2, and four guide plates 93 are provided upright at the upper corners of the pushing plate 92. That is, when the rotating frame 76 stops rotating in the downward position, the pushing cylinder 91 is operated to lower the packaging bag F against the inner bottom surface of the cardboard box B vertically raised by the box lifting mechanism 7 described later. The push plate 92 is moved up and down to a position and a rising position where the turning operation of the rotating frame 76 constituting the bag holding mechanism 5 is allowed.

The above-mentioned box lifting / lowering mechanism 7 includes a box feed conveyor 9
The lifting platform 95 is disposed at the lifting position set on the upper surface 4, and two hooks 95a, 9 projecting from the lower front end of the lifting platform 95 are provided.
5a is inserted between the respective feed rollers 94a of the box feed conveyor 94, and is vertically fixed to the side at the same position.
Is connected to the lower end of the lower surface side of the elevating table 95, and by the operation of the elevating cylinder 96, the ascending position at which the packaging bag F inverted by the bag holding mechanism 5 is inserted into the cardboard box B. And the cardboard box B is a box feed conveyor 9
The elevator 95 is moved up and down to the lowering position to be transferred to No. 4.

In the box feed conveyor 94 described above, a large number of feed rollers 94a are suspended at predetermined intervals between left and right mounting frames 97, 97 provided in the box feed direction, and a motor with a speed reducer (shown in FIG. Each of the feed rollers 94 is driven by the driving force (omitted).
are rotated in the box feed direction, and each feed roller 94a is rotated.
The cardboard box B placed thereon is aligned and transported in the box feed direction. Further, as shown in FIG. 5, each of the mounting frames 97, 97 at the subsequent stage of the elevating position set on the box feed conveyor 94.
Each of the reciprocating cylinders 98, 98 is slidably mounted thereon, and the flaps Ba formed on both side edges and the front edge of the cardboard box B are attached to the piston rods of the respective reciprocating cylinders 98, 98. Each flap support plate 98a, 98a formed in a length and a shape to be supported in a vertical posture is fixed. Further, a flap support rod 99a having a length and a shape for supporting the flap Ba of the cardboard box B in a vertical position is fixed to the shaft end of the rotation motor 99 fixed on the mounting frame 97 in the preceding stage of the elevating position. ing.

That is, by the synchronous operation of each of the reciprocating cylinders 98, 98, the forward position for supporting the front corner of the cardboard box B conveyed to the elevating position on the box feed conveyor 94, and the conveyance of the cardboard box B The left and right flap support plates 98a, 98a are moved back and forth to the retreat position where is allowed. By driving the rotation motor 99, the flap support rod 99a is horizontally rotated between a revolving position for supporting the rear central portion of the cardboard box B and a retreating position where the cardboard box B can be conveyed.

Assuming that the illustrated embodiment is configured as described above, the operation of laying the packaging bag F by the bag laying apparatus 1 will be described below. First, before starting the work, as shown in FIG. 6 and FIG.
After the feed rolls 10 and 21 and the pressing rolls 11 and 22 are vertically separated from each other by raising and lowering the cylindrical film f, the cylindrical film f bearing in the roll loading unit 8 is pulled out by an operator's hand. And sequentially circulates around each of the rolls 10, 18, 19, 20, 21 and operates the pressing cylinders 12, 25 to press the cylindrical film f with the feed rolls 10, 21 and the pressing rolls 11, 22. Hold.

Thereafter, the injection cylinder 31 is moved forward, and the air nozzle 30 is once pierced into the drawing-side end of the cylindrical film f supplied on the feeding path, for example, pressurization supplied from a compressor or the like. An appropriate amount of air is injected into the cylindrical film f. When the injection cylinder 31 is moved backward, the air nozzle 31 is moved from the end of the cylindrical film f on the drawing side.
, And each feed roll 1 of the film feeding mechanism 2
By rotating the feed conveyors 0 and 21 and the feed conveyor 45 to feed the tubular film f to the opening position on the feed path, the feed rolls 10 and 21 and the pressing rolls 11 and 22 bearing in the upper and lower stages are connected. Since the tension is appropriately applied, the pressurized air injected into the cylindrical film f is prevented from leaking, and the close contact portion of the cylindrical film f can be sequentially separated by the pressurized air injected before the start of work.

On the other hand, as shown in FIG. 3, FIG. 4, and FIG. 5, the cardboard box B supplied from the box making process (not shown) is transported to the elevation position on the box feed conveyor 94, and each of the advance / retreat cylinders 98 is moved. , 98 are operated synchronously to hold the cardboard box B once with the left and right flap support plates 98a, 98a,
Each of the flaps Ba... Formed upright on both side edges and the front side edge of the cardboard box B is supported in a vertical posture. At the same time, the rotating motor 99 is driven to vertically support the flap Ba formed on the rear edge of the cardboard box B with the flap support rod 99a.

Next, as shown in FIG.
When the leading end of the bag has reached the opening position, the cylinders 66 and 68 for raising and lowering the bag opening mechanism 4 are actuated to operate the cylindrical film f.
The upper and lower surfaces on the opening side are suction-held by upper and lower suction pads 62 and 73. That is, since the close contact portion of the cylindrical film f is once separated by the pressurized air injected before the start of the work, the upper and lower suction-side upper and lower surfaces of the cylindrical film f are reliably sucked and held by the upper and lower suction pads 62 and 73. it can. By operating the pressing cylinder 36 of the film separating mechanism 3, the cylindrical film f
Is thermally welded in the width direction by the heating head 38 in a state where the separation side end is pressed and held by the pressing head 41. at the same time,
By operating the cutting cylinder 32 and cutting the thermally welded tubular film f in the width direction with the cutting cutter 33, one packaging bag F is formed separately.

Next, as shown in FIG. 9, the respective cylinders 32 and 36 of the film separating mechanism 3 are operated to return, so that the cutting cutter 33 and the heating head 38 are returned to the initial positions. The return cylinders 66 and 68 are operated to open the loading port Fa of the packaging bag F sucked and held by the upper and lower suction pads 62 and 73 in the vertical direction. At the same time, the respective moving cylinders 79, 79 and the respective opening / closing cylinders 85, 85 of the bag holding mechanism 5 are actuated, and four folding claws 83 are inserted into the opening Fa of the packaging bag F which is opened to an appropriate size. , The opening Fa of the packaging bag F is opened and held in the left-right direction by the four folded claws 83, and the suction holding by the upper and lower suction pads 62, 73 is released. Next, FIG.
As shown in FIG.
79 to return the packaging bag F held by the four folding claws 83 to the reversing position.
To turn the packaging bag F held by the four folding claws 83... In the downward position, and only when the bag is inverted, the turning cylinder 74 is operated to turn the lower suction pads 73, 7.
3 is once rotated to the retracted position. Immediately after the bag reversal, each air nozzle 89 is placed in the packaging bag F held by the four folding claws 83.
... and pressurized air is supplied to expand the size appropriately. Alternatively, the pushing cylinder 91 of the bag pushing mechanism 6 is lowered to vertically insert the pushing plate 92 into the packaging bag F held by the four folding claws 83.

At the same time, as shown in FIG. 11, the raising / lowering cylinder 96 of the box raising / lowering mechanism 7 is raised to move the cardboard box B stopped at the raising / lowering position on the box feeding conveyor 94 vertically by the raising / lowering table 95. Lift and insert the packaging bag F held by the four folding claws 83... Into the cardboard box B. When the folded claws 83 are locked to the flaps Ba of the cardboard box B, the closing angle cylinders 87, 87 are actuated.
The holding of the opening by the folding claws 83 is released, and the cylinders 98 for return are operated to return to return the left and right flap support plates 98a, 98a to the initial position, and the rotation motor 99 is rotated in reverse. Then, the rear flap support rod 99a is returned to the initial position.

Thereafter, the moving cylinders 79, 79 of the bag holding mechanism 5 are lowered and the cardboard box B is folded back with the opening Fa of the packaging bag F held by the four folding claws 83. Of each of the flaps Ba ... of the corrugated cardboard box B, the packaging bag F
Can be coated in a single folded state.

Next, the pushing cylinder 91 of the bag pushing mechanism 6 is returned to the initial position, the pushing plate 92 is returned to the initial position, and the cylinders 79, 85 and 87 of the bag holding mechanism 5 are returned to the initial position. Each of the folded claws 83 is returned to the initial position. At the same time, the elevating cylinder 96 of the box elevating mechanism 7 is moved down to move the cardboard box B with the bags transferred onto the box feed conveyor 94 into the next step (for example, a bag filling step, a bag closing step, a box sealing step). Convey and supply to step). Hereinafter, in the same manner as described above, each of the mechanisms 2, 3, 4, constituting the bag laying apparatus 1 will be described.
5, 6 and 7 are driven to lay and set the packaging bags F separated and formed in a suitable size in the cardboard box B.

As described above, the contact portions of the cylindrical film f are sequentially separated by the pressurized air injected before the start of the work, so that the input port F of the packaging bag F separately formed into an appropriate size is formed.
a can be reliably sucked and opened by the suction pads 62 and 73 of the bag opening mechanism 4, and the cardboard cardboard remains open with the input port Fa of the packaging bag F sucked and held by the suction pads 62 and 73 of the bag opening mechanism 4. Each flap Ba ... of the box B can be covered. Therefore, the labor and work of separating the close contact portion of the tubular film f by the operator's hand as in the conventional example can be omitted, and the supply work of the tubular film f and the laying work of the packaging bag F can be performed mechanically, Labor saving and efficiency improvement of work can be achieved.

In correspondence between the configuration of the present invention and the above-described embodiment, the bag of the present invention corresponds to the packaging bag F of the embodiment, and similarly, the box corresponds to the cardboard box B, The air injection means corresponds to the air nozzle 30 and the injection cylinder 31, but the present invention is not limited to the configuration of the above-described embodiment.

In the above-described embodiment, the air injection means for piercing the air nozzle 30 once to inject the pressurized air into the drawn-out end of the cylindrical film f is used. Means for injecting air by manually or mechanically opening the end of the cylindrical film f when the cylindrical film f is drawn out, or a handy means for injecting air by pulling out the end of the cylindrical film f. A means for injecting or piercing a mold air nozzle (not shown) to inject pressurized air may be used.

When the opening Fa of the packaging bag F is changed from a single fold to a double fold, the film separating mechanism 3
Of the packaging bag F with respect to each of the flaps Ba of the corrugated cardboard box B in a double-folded state by variably adjusting the cutting position of the tubular film f by the above or the raising position of the cardboard box B by the box lifting mechanism 7. Can be coated.

[Brief description of the drawings]

FIG. 1 is a side view showing the overall configuration of a bag laying device.

FIG. 2 is a side view showing an arrangement state of a film feeding mechanism and a film separating mechanism.

FIG. 3 is a side view showing an arrangement state of a bag opening mechanism and a bag holding mechanism.

FIG. 4 is a side view showing an arrangement state of a bag holding mechanism and a box elevating mechanism.

FIG. 5 is a plan view showing a state in which the cardboard box is stopped at an elevating position on a box feeding conveyor.

FIG. 6 is a side view showing the feeding operation of the film feeding mechanism.

FIG. 7 is a cross-sectional view showing a state in which pressurized air is injected into a tubular film.

FIG. 8 is a side view showing a separating operation of the film separating mechanism and a suction operation of the bag opening mechanism.

FIG. 9 is a side view showing the opening operation of the bag opening mechanism and the holding operation of the bag holding mechanism.

FIG. 10 is a side view showing the insertion operation of the bag holding mechanism.

FIG. 11 is a side view showing the folding operation of the bag holding mechanism and the elevating operation of the box elevating mechanism.

FIG. 12 is a side view showing an operation of laying a packaging bag by the conventional device.

[Explanation of symbols]

 f: cylindrical film F: packaging bag Fa: inlet B: cardboard box Ba: flap 1: bag laying device 2: film feeding mechanism 3: film separation mechanism 4: bag opening mechanism 5: bag holding mechanism 6: bag pushing mechanism 7 ... Box lifting / lowering mechanism 30 ... Air nozzle 31 ... Injection cylinder 33 ... Cutting cutter 38 ... Heating head 62, 73 ... Suction pad 83 ... Folding claw

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-104828 (JP, A) JP-A-64-45206 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65B 43/00-43/62 B31B 7/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A bag which is formed by separating a cylindrical film made of synthetic resin supplied on a feeding path into a suitable size and opening the separated formed bag to an appropriate size to lay the inside of the box. A laying device, comprising: a nozzle tip facing a tubular film supplied on the payout path, at a stage preceding the separation position set on the payout path;
And a bag laying device provided with air injection means for piercing the air and injecting an appropriate amount of air.