JPH0745310Y2 - Bag reinforcement device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-reinforcing member attaching device for reinforcing bag openings of bags such as shopping bags.

[0002]

2. Description of the Related Art Generally, bags such as shopping bags are
A handle for a bank is attached to the bag mouth to enhance its portability, and a reinforcing material such as cardboard is attached to the bag mouth to enhance the attachment strength of the handle. As a device for sticking a reinforcing material to a paper bag in this way, Jpn.
Reinforcing sheet sticking apparatus disclosed in 8593 discloses the b
Roll-out roll of long reinforcing sheet wound into a roll
And apply adhesive to one side of the reinforcing sheet.
After cloth, glue the reinforced sheet with a cutter roll
After cutting into strips, the strip-shaped reinforcing pieces are
Inside and outside of the front and back two sheets wound in a roll by the roll
It is supplied between the layers of paper at a specified interval, and the inner and outer layers of paper and reinforcing pieces are
A long tube that is bonded by a pair of upper and lower pressure bonding rollers.
Put a tube-shaped paper tube in the center of the reinforcing piece.
Or cut at one edge of the reinforcing piece to cut the mouth or bottom of the bag.
It is configured to reinforce the part. In addition, the actual development Sho 62-
No. 128823 discloses a flat developed raw material before bag making.
Stick a sticking piece with a handle on the upper edge of the paper,
A rotating cylinder that rotates and conveys the base paper to which the sticking pieces are attached in advance.
And the grip claws are installed in the longitudinal direction of the peripheral surface of this rotary cylinder.
The opening on the outside of the rotary cylinder.
A folding blade that pushes the top edge of the paper into the opening is rotatably installed.
The upper edge of the base paper inserted into the opening by the folding blade
Between the inner peripheral surface of the opening and the gripping claw that can be separated from the inner surface of the opening.
L protruding from the opening of the rotary cylinder
Press the upper edge of the base paper against the rotating cylinder with the letter-shaped presser claw.
By doing so, double fold the upper edge where the fixing piece is attached.
A folding device configured to retract is proposed.

[0003]

[Devised Problems to be Solved] However, the conventional example of
Reinforcing sheet proposed in Japanese Utility Model Publication No. 57-48593
The pasting device is a strip of reinforcing sheet inside and outside.
Since it is supplied between the sheets of paper, it is not
To attach to the corresponding part, stack two reinforcing sheets
It is supplied between the inner and outer papers in the combined state, and
Do not glue the outer surface of each of the two reinforcing sheets together.
Must be made into a strip with a single vacuum supply roll.
Remove the cut reinforcing sheet from the glued surface of the two reinforcing sheets.
Inner and outer paper in the state that they are stacked back to back
It is structurally impossible to supply during. According to
And the reinforcing sheet is the inner layer paper or outer layer paper that constitutes the bag.
Only one of them is attached, and the reinforcing sheet is attached
The bag mouth on the non-existent side is not reinforced at all, so its reinforcing effect is
It was inferior.

In this regard, Japanese Utility Model Laid-Open No. 62-128823
The folding device proposed in the publication is fixed on the upper edge of the base paper.
The upper end of the base paper on which the sticking piece is attached and the sticking piece is further attached
Although it has a double structure with the edges folded back, this folding
The sticking device sticks and folds the shaving device in the state of the base paper before bag making.
Finally, the both sides are finally
It is necessary to fold it into an M shape and mold the bottom into a square bottom shape.
It However, in addition to sticking the fixing piece like this,
Double-fold the upper edge of the base paper and fold both sides into an M shape
When forming a bag with a square bottom at the bottom,
If the reinforced portion of the edge is difficult to fold and it is difficult to mold the bag body
There is a handle on the sticker attached to the base paper, not on the scale.
Therefore, it is more difficult to make a bag because the handle becomes an obstacle during bag making.
Therefore, to reinforce the bag mouth of this type of bag,
When pasting materials, fold both sides into an M shape beforehand with a bag-making machine.
Reinforcement is applied to the bag mouth of the bag body that has been inserted and molded into a square bottom shape.
It is more efficient to stick it and fold the bag mouth inside.
It However, the insertion of Japanese Utility Model Publication No. 62-128823.
For the equipment, make sure to attach the fixing piece in the state of the base paper beforehand.
Affix the reinforcing material to the bag mouth of the bag and
Folding is impossible. That is, it is supplemented with a flat base paper.
When attaching strong materials, make sure that the gluing surface of each
Transport with the paper side facing and simply place the reinforcements at intervals.
A simple structure to attach is sufficient, but both left and right sides of the bag mouth
When attaching a reinforcing material to the inside of the bag,
The two reinforcing materials to be attached should be the glued surface of one of the reinforcing materials.
Glue the reinforcing material by inverting it with respect to the gluing surface of the other reinforcing material.
Place symmetrically with the attachment surfaces facing outward
It is necessary to use the bag mouth before folding
In the two-dimensionally developed base paper, only one side of the base paper is folded
All you have to do is put the inside of the bag mouth of the bag
To fold it, the left and right edges of the bag mouth, the front and back edges, total 4
The side needs to be folded. Also, use paper as the material for the bag.
When used, it is easy to wrinkle when folding the bag mouth
Although it is a good thing, in the bag body made by bag, both left and right sides of the bag mouth
It is necessary to fold all four sides including the edges and front and rear edges,
When folding the inner edge of the bag mouth of the
Preventing wrinkles is an important issue.

Therefore, the present invention is a bag of a prefabricated bag body.
With the sticking and folding the reinforcements in the mouth can be carried out continuously, when the bag mouth periphery of the folding step, crease
An object of the present invention is to provide a device for attaching a reinforcing material for a bag, which can prevent the occurrence of

[0006]

SUMMARY OF THE INVENTION A bag body reinforcing material attaching apparatus according to the present invention has a bottom portion formed into a square bottom shape by folding both sides into an M shape.
Reinforcement material to reinforce the left and right inner edges of the bag mouth of the shaped bag body,
From the storage part that stacks and stores the reinforcing material and from this storage part
Adhesive to the reinforcing material while the bag is being transported to the standby position
Gluing device and the reinforcing material from the storage
Transfer this reinforcing material to the left and right inner edges of the bag mouth,
Pair of left and right attached to the outside of the left and right upper edges of the bag mouth from the side
The above-mentioned reinforcement is applied to the left and right inner edges of the bag mouth by pressing it against the flat plate
A pair of suction members to attach the material, and attach it to the receiving plate
A bag mouth suction device that holds the bag mouth of the bag body in an open state, and
Left and right folds, each of which is pivotally supported on the upper surface of the receiving plate
Rotate the body and the left and right folded bodies downward to
The left and right upper edges of the bag mouth to which the reinforcing material is attached are attached to the receiving plate side.
Press and fold the left and right upper edges of the bag mouth inward
Driving means and lifting and lowering by attaching the front and rear upper edges of the bag mouth
A pair of front and rear folding bodies, and the front and rear folding bodies and
During the folding process of the bag mouth edge by the left and right folding bodies, the bag body
A bag molding device that can move up and down by holding the bag mouth by contacting the four corners of the inner surface
It is equipped with a storage device.

[0007]

SUMMARY OF Invention The present invention than the above-described configuration, the one reinforcing member from the accommodating unit by the pair of suction members and suction, respectively, the
Move each reinforcing material to the left and right inner edges of the bag mouth of the bag made in advance.
To the receiving plate attached to the outside of the bag mouth.
Press from the inside of the bag and attach the reinforcing material to the left and right inner edges of the bag mouth.
To wear. After this , the bag forming device was inserted into the inner surface of the bag body with the bag mouth adsorbing device opened, and the reinforcing material was attached in a state where the bag mouth was prepared by contacting the four corners of the inner surface of the bag forming device . Of the bag
The left and right folded bodies that pivotally support the left and right upper edges on the receiving plate are moved downward.
It is rotated and sandwiched between the left and right folding bodies and the backing plate, while the bag
The front and rear opening edges of the mouth are sandwiched by front and rear folding bodies, and the peripheral edge of the bag mouth is folded inward.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 21 show an embodiment of the present invention,
In the schematic explanatory views of FIGS. 1 and 2, a pair of left and right endless conveyor chains 2 that constitute a conveying device A are provided on a main body frame 1 so as to extend between a drive sprocket 3 and a driven sprocket 4. , Drive sprocket 3
A bag body 7 formed into a square bottom shape by a square bottom bag making machine (not shown) by rotating the conveyor chain 2 by starting a clutch-brake motor 6 connected to the belt via a belt 5.
Left and right attachment positions 2 for conveying the reinforcing material 8 made of cardboard along the conveyance path of the conveyor chain 2 and inside the left and right edges of the bag mouth 7A of the bag body 7, respectively.
A, 2B is the al provided on the front side of the main body frame 1 are, bag stiffener 8 substantially at the center of the body frame 1 is attached port 7A
Setting the left and right folding position 2C of folding the left and right upper edge inwardly
Only, the rear side of the main frame 1 before and after folding position 2D of folding the front and rear upper edge to the inside of the bag mouth 7A is provided. The bags 7 conveyed by the conveyor chain 2 have the above-mentioned positions 2A.
By controlling the motor 6 by a sensor (not shown) provided corresponding to .about.2D, each of the positions 2A to 2D is stopped and sequentially conveyed.

At the pasting positions 2A and 2B, bag mouth suction devices B for adsorbing the upper edge of the bag mouth 7A of the bag body 7 and opening the bag mouth 7A are arranged facing each other via the conveyor chain 2. In addition, a storage case 9 which is a storage portion for storing a large number of the reinforcing members 8 is disposed at a side of each of the sticking positions 2A and 2B, and a large number of storage cases are provided above the storage case 9. Adsorption member for adsorbing and taking out the laminated uppermost reinforcing material 8
10 and 10A are provided respectively, and the suction members 10 and 10A are transferred by a reinforcing material transfer device C that reciprocates between the housing case 9 and the attachment positions 2A and 2B. Each adsorbing member 1 by the gluing device D provided on the way
The hot-melt adhesive is injected toward the adhesive surface of the reinforcing material 8 adsorbed by 0, 10A to be adhered, and the adsorbing members 10, 10A that adsorb the reinforcing material 8 with the adhesive thus adsorbed The member driving device E is rotated in the vertical direction to rotate the bag mouth 7
The reinforcing material 8 is attached to the left and right inner edges of A.

A bag mouth suction device F, which is substantially the same as the bag mouth suction device B, is provided at the left and right folding position 2C. At the upper part of the bag mouth suction device F, the left and right upper edges of the bag mouth 7A are inward. The left and right folding bodies 11 are rotatable and the folding driving means is connected to the left and right folding bodies 11 via a two-joint link arm 12.
A left and right folding device G constituted by a cylinder 13 is provided. Between the left and right folding devices G, a bag forming device H which is inserted into the inside of the bag body 7 and abuts on each corner of the inner surface of the bag body 7 to form and hold the bag body 7 is provided so as to be vertically movable.

At the front and rear folding position 2D, the bag mouth 7A
A bag forming device J is provided which is substantially similar to the bag forming device H and the front and rear folding device I including a pair of opening and closing arms 15 for folding the front and rear outer edges of the bag inward.

More specifically, the conveyor chain 2
As shown in FIGS. 3 and 4, a bag receiver 20 for accommodating the bag body 7 and an L-shaped bracket 22 for supporting a pair of bag retainers 21 are fixed at predetermined intervals, and through holes formed in the bracket 22.
By inserting a shaft 24 protruding from the side portion of each bag retainer 21 into 23, each bag retainer 21 is supported so as to be slidable in the left-right direction with respect to the bracket 22. A guide roller 26 is slidably engaged with a guide rail 25 provided on the main body frame 1 along the conveying path of the conveyor chain 2 at the tip of the shaft 24.
And a spring 27 for elastically pressing the guide roller 26 against the guide rail 25 is mounted on the shaft 24, and the guide roller 26 biased in this way is attached to the conveyor chain 2. In conjunction with the operation, each bag retainer 21 is slid along the tapered surface 25A formed at the front end of the guide rail 25.
Is moved inward, and the lower portion of the bag body 7 accommodated in the bag receiver 20 is pinched by the bag retainer 21 at the time of conveyance, so that the bag body 7 is stably conveyed.

As shown in FIG. 6, a frame-shaped mounting frame 31 is arranged above the fixed frame 30 juxtaposed to the main body frame 1 on the side of the sticking positions 2A and 2B. A pair of guide posts 32 standing up and down on the front and rear of the fixed frame 30 guide vertically so that they can be moved up and down by a lifting jack 33 according to the height of the bag body 7. A fixing plate 35 for mounting the suction members 10 and 10A via a support rod 34 is provided on the upper portion of the mounting frame 31, and a reinforcing member is attached to the bag body 7 below the suction members 10 and 10A. A pair of left and right receiving plates 36, 36A for mounting the containing case 9 for the material 8 and the spare containing case 9A for the reinforcing material 8 as a spare are provided corresponding to the suction members 10, 10A, respectively, and the receiving plate 36 , 36A are attached and fixed to a moving table 38 which moves along a rail 37 attached to an attaching frame 31 as shown in FIG. 9, and one of the housing cases 9 and 9A is attached to the moving table 38. A cylinder 39 is connected to selectively move the suction members 10 and 10A below the standby position. Also, the storage case 9
A support plate 40 for supporting the lowermost reinforcing member 8 laminated in the housing case 9 is provided at the bottom of the support case 40, and a screw rod 41 for rotatably supporting the support plate 40 on the mounting frame 31. The support plate 40 is moved up and down by the rotational driving of the motor 43 which is screwed to the screw rod 41 and is connected to the belt 42 by the belt 42, and the uppermost reinforcing member 8 is attached to the upper surface of the mounting frame 31 at the standby position of the suction members 10 and 10A. Is supplied by facing the outlet 44 that is opened corresponding to the above, and the uppermost reinforcing material 8 thus supplied is detected by a plurality of sensors 45 provided around the outlet 44. The motor 43 for raising and lowering the support plate 40 is controlled by the detection signal.

The suction members 10 and 10A are composed of a plurality of suction pads 51 provided on the support member 50 as shown in FIGS. 6 to 8, and a negative pressure generating device such as a compressor (not shown) connected in communication with the suction pads 51. By this, the uppermost reinforcing material 8 supplied to each outlet 44 is adsorbed and the attachment positions 2A, 2B are
Transfer to. As shown in FIG. 9, a frame 53 having a guide rod 52 is hung between a cylinder 54 attached to the fixing plate 35 between the attaching positions 2A and 2B and the respective outlets 44, and the guide rod 52 is provided. A transfer body 55 which constitutes the reinforcing material transfer device C is guided to the 52, and the transfer body 55 is moved along the guide rod 52 between the attachment positions 2A and 2BA and the respective outlets 44 by an appropriate driving means (not shown). Move back and forth.

The transfer body 55 is provided with a rotary actuator 56 for rotating the suction members 10, 10A in the horizontal direction by approximately 90 °, and a support member 50 for supporting the suction members 10, 10A is provided on the rear surface side of the rotary actuator 56. the reinforcing material but with mounted via a spring 57, the support member 50 for adhering the reinforcing member 8 to the left and right inside edges of the bag mouth 7A by approximately 90 ° rotation of the suction member 10,10A vertically Rotary actuator that becomes the drive unit E
58 are provided. Further, in the transfer path of the reinforcing material transfer device C, a nozzle 59 which is a gluing device D is attached to the mounting frame.
The hot melt adhesive melted by the tank main body (not shown) is sprayed from the nozzle 59 onto the back surface side of the reinforcing material 8 adsorbed by the adsorbing members 10 and 10A at appropriate intervals. As shown in FIG. 7, the reinforcing member 8 having the adhesive thus attached is operated so that the rotary actuator 56 is actuated so that the supporting members 50 of the suction members 10 and 10A are parallel to the conveyor chain 2. After being rotated by about 90 ° in the direction and transferred by the transfer body 55 to the upper part of the bag body 7 which has been transported to the respective attachment positions 2A and 2B, the rotary actuator 58 is operated to move the support member 50 in the vertical direction substantially. The reinforcing member 8 is attached to the bag mouth 7A of the bag body 7 held by the bag mouth suction device B by rotating 90 °.

Each sticking position 2A, 2B and left and right folding position 2
The bag mouth suction devices B and F provided corresponding to C are shown in FIGS.
As shown in FIG. 5 and FIG. 8 , an elevating table 66 guided by a pair of guide rods 65, and a feed driving device 67 mounted on the upper surface of the elevating table 66 and having a drive source such as an air cylinder (not shown) incorporated therein. And a flat plate-like receiving plate 69 having a plurality of suction cups 68 that are driven and driven by the feed driving device 67,
Wherein the elevating table 66 is threaded screw rod 66 A, which is directly connected to the motor 66 B is the height of the bag body 7 a receiving plate 69 of the suction cup 68 mounted through the elevating table 66 by the drive of the motor 66 B The height can be adjusted according to.

The bag mouth suction device F at the left and right folding positions 2C
As shown in FIGS. 12 and 19 , a left and right folding body 11 which constitutes a left and right folding device G is rotatably supported by a hinge 69A on an upper surface of a receiving plate 69 of a suction cup 68. Cylinder that is connected to the left and right folding body 11 via a two-bar link arm 12
The left and right folding bodies 11 are rotated inward by the operation of 13, and the left and right upper edges of the bag mouth 7A to which the reinforcing material 8 is attached are folded inward. Further, the upper left and right folding position 2C 10 及
As shown in FIG. 12 and FIG. 12 , a frame 70 of the bag forming apparatus H is installed on the main body frame 1, and a molding die is provided below the mounting base 72 which is guided along a pair of guide rods 71 provided on the frame 70. The fixing plates 75 of the slide cylinders 74, 74A for driving the presser pawls 73, 73A forward and backward along the longitudinal direction of the bag body 7 are arranged in parallel, and the fixing plate 75 and the mounting base 72 are combined with the lifting cylinder 76. , While the mount 72 and the top plate of the frame 70 are connected.
70A is connected to the lifting rod 77 for lifting, and the handle of the screw rod 77 is connected.
After rotating 78 to adjust the height of the mounting base 72 according to the height of the bag body 7, the clamp lever 79 mounted on the mounting base 72
Is fixed to the guide rod 71 to fix the mounting base 72. The pressing claws 73, 73A are fixed to the mounting rod 82 with screws 83 via a rotary actuator 81 assembled and fixed to the frame 80, and the frame 80 is fixed to the slide cylinders 74, 74A. The piston rod is connected and guided along a rail 85 fixed to the upper surface of a guide frame 84 provided at the lower part of the fixed plate 75. Then, the elevating cylinder 76 is operated to lower the pressing claws 73, 73A into the bag body 7 held by the bag mouth suction device F through the guide frame 84, and the slide cylinders 74, 74A are operated to operate the bag body. 7 By moving the presser pawls 73, 73A back and forth along the rail 85 in the carrying direction of the carrying device A, that is, along the longitudinal direction of the bag body 7, the bag body 7 is brought into contact with the four corners of the inner surface of the bag mouth 7A. It is configured to hold.

As shown in FIGS. 11 and 13, the bag forming device J provided at the front and rear folding position 2D is the bag forming device H.
The frame 70 B installed on the body frame 1 in the same manner as
The mounting base 72A guided along the guide rod 71A is connected with the lifting screw rod 77A, and the mounting base 72A and the fixing plate 75A are connected.
Are connected by a lifting cylinder 76A, the fixing members 80A of the presser pawls 91, 91A are connected to the slide cylinders 90, 90A provided on the fixed plate 75A, and the fixing is performed by the operation of the slide cylinders 90, 90A. The member 80A is moved along a guide rail 85A provided on the upper surface of the guide frame 84A, and as with the bag forming apparatus H, the lifting claws 76A are used to press the holding claws 91,
The 91A is lowered into the bag body 7, and the holding claws 91, 91A arranged in the bag body 7 are held by the slide cylinders 90, 90A by abutting the respective corners of the inner surface of the bag body 7. Is configured. Each bag molding apparatus H, J of the holding claws 73,73A, 91,91A before via a connection rod 86 detachable
Serial attached to the mounting rod 82, by exchanging together the mounting rod 82 with the width of the bag body 7, which can correspond to the bag width of various sizes. Further, the front-back folding device I is shown in FIG.
Pair before and incorporated in the bag molding device J, as shown in
The opening / closing clamp 100 is provided, and the clamp unit 101 pivotally mounting the opening / closing clamp 100 is the guide frame 84A.
It is screwed to the screw rod 102 for supporting the rear surface of the screw rod 10
The opening / closing clamp 100 is provided so as to be movable back and forth according to the size of the bag body 7 in the longitudinal direction by rotating the operation handle 103 attached to the end of 2 , and the opening / closing clamp provided on the clamp unit 101 is also provided. By operating the cylinder 104 and closing the opening / closing clamp 100, the bag body 7
The front and rear outer edges of are folded inward.

The operation of the present invention constructed as above will be described.

First, the bag body 7 formed into a square bottom shape by a square bottom bag making machine (not shown) is housed in a bag receiver 20 provided on the conveyor chain 2, and the guide rail is operated by the operation of the conveyor chain 2 by starting the motor 6. The guide roller 26 is slid along the taper surface 25A of 25, and in conjunction with this, the bag body 7 is conveyed while the lower portion of the bag body 7 is sandwiched by the bag retainer 21 as shown in FIG. When the bag body 7 is conveyed to the attachment position 2A of the reinforcing material 8, the sensor (not shown) provided at the attachment position 2A detects the bag body 7, and the motor 6 of the conveyor chain 2 is driven by the detection signal from this sensor. The bag body 7 is stopped at the attachment position 2A. Thereafter, the drive device 67 of the bag suction device B is actuated to move each receiving plate 69 to the center side of the conveyor chain 2, and a suction cup 68 provided on this receiving plate 69.
Is brought into contact with the left and right upper portions of the bag mouth 7A of the bag body 7, and the bag mouth 7 is adsorbed by a negative pressure generating device (not shown) such as a compressor.
By actuating the drive device 67 again to move the receiving plates 69 in the separating direction, the bag body 7 is made to stand by at the attachment position 2A with the bag mouth 7A opened. A cylinder for raising and lowering the frame 53 provided between the attachment position 2A and the outlet 44 of the reinforcing member 8.
54, the suction member 10 mounted on the frame body 53 via the transfer body 55 is lowered in parallel with the reinforcing member 8, and the reinforcing member 8 supplied to the outlet 44 is sucked by a negative pressure generating device (not shown). While adsorbing to the suction pad 51 of the member 10, the frame 53 is raised by the cylinder 54 to take out the uppermost reinforcing member 8 to be stored in the storage case 9. After that, the rotary actuator 58, which serves as the reinforcement driving device E, is operated, and the nozzle 59 of the gluing device D in which the suction member 10 is provided below the frame body 53.
After the hot melt adhesive which is sprayed from the nozzle 59 is attached to the back surface side of the reinforcing material 8 which is rotated so as to be opposed to the suction member 10 by the rotary actuator 58, the suction member 10 is returned to the original position. The reinforcing member 8 which is rotated in a horizontal state and glued in this manner is rotated by approximately 90 ° clockwise so that the reinforcing member 8 is moved along the longitudinal direction of the bag mouth 7A of the bag body 7 conveyed by the conveyor 2 by the operation of the rotary actuator 56. In the horizontally rotated state, the reinforcing member 8 that moves along the guide rod 52 provided on the frame 53 and is adsorbed to the adsorbing member 10 is attached to the bag body 7 at a standby position 2
After the transfer to A, the rotary actuator 58 is operated to rotate the suction pad 51 downward by approximately 90 °, so that the reinforcing material 8 to be sucked onto the suction member 10 is closed as shown in FIGS . 16 and 19. Receiving via the bag mouth 7A held by the suction device B
The reinforcing material 8 is attached to the inner edge of the bag mouth 7A on the right side in the conveying direction by pressing it against the plate 69 . When the uppermost reinforcing member 8 to be housed in the housing case 9 is taken out by the suction member 10, the lifting / lowering motor 43 of the support plate 40 is activated to raise the support plate 40, and the uppermost support member 40 is stacked on the support plate 40. The upper reinforcing member 8 is detected by a sensor 45 provided around the outlet 44, and the motor 43 is stopped by a detection signal from the sensor 45, and thus the uppermost reinforcing member 8 is sequentially removed every time it is taken out. The upper reinforcing material 8 is configured to be supplied so as to face the outlet 44, and when the reinforcing material 8 to be housed in the housing case 9 is exhausted, the cylinder 39 is operated to operate the housing case 9 and the spare housing case 9A. The movable table 38 for mounting the auxiliary storage case 9A is moved along the rail 37 of the fixed frame 30 to dispose the auxiliary storage case 9A concentrically with the outlet 44, and the storage case 9 without the reinforcing member 8 is provided with the receiving plate 36. From Reinforcement 8 to be accommodated in the housing case 9,9A by recruiting stiffener 8 out come becomes possible continuously supplied. When the sticking process on the right inner edge of the bag mouth 7A is completed in this way, the conveyor 2 is operated to convey the bag body 7 to the sticking position 2B, where the suction member 10A is moved in the same manner as the sticking process described above. Reinforcing material 8 at the top to be stored in storage case 9 by
17 is taken out, and the hot melt adhesive is attached by the gluing device D, and then it is conveyed to the attaching position 2B, and the suction pad 51 is rotated approximately 90 ° downward by the operation of the rotary actuator 58, and the state shown in FIG. As shown, the reinforcing material 8 adsorbed to the adsorption pad 51 is pressed against the bag mouth 7A held by the bag mouth adsorbing device B, and the reinforcing material 8 is attached to the inner edge of the bag mouth 7A on the left side in the transport direction. After that, the bag body 7 to which the reinforcing material 8 is attached on the left and right is conveyed to the left and right folding position 2C, and the bag body 7 waits at the left and right folding position 2C with the bag mouth suction device F opening the bag mouth 7A. Let Then, the lifting cylinder 76 of the bag forming apparatus H is operated to lower the presser pawls 73, 73A into the bag body 7, and then the slide cylinders 74, 74A are operated to move the presser pawls 73, 73A along the rail 85. By moving back and forth along the conveying direction of the conveyor 2, that is, along the longitudinal direction of the bag body 7, the bag body 7 is brought into contact with each corner of the inner surface of the bag body 7 to form and hold the bag body 7. , 73A, and the bag mouth 7A to which the reinforcing material 8 held by the bag mouth suction device F of the bag body 7 is attached as shown in FIG. 18 and FIG. The left and right folding body 11 provided on the upper part of the mouth suction device F is turned inward by the operation of the cylinder 13 through the two-joint link arm 12 and folded inward, and the bag mouth 7A folded inside is folded left and right. Body 11
And the backing plate 69, and fold the top and bottom edges of the bag mouth 7A inward.
At the same time, the adhesive surface of the reinforcing material 8 is brought into close contact with the left and right inner edges of the bag mouth 7A and firmly adhered. After that, when the left and right folds are completed, the lifting cylinder 76 that moves the presser pawls 73 and 73A and the slide cylinders 74 and 74A are retracted to press the presser pawls 7.
3, 73A is returned to the standby state, and the bag body 7 for which the left and right folding steps have thus been completed is conveyed to the front-back folding position 2D. At the front-back folding position 2D, the bag body 7 is held by the holding claws 91, 91A of the bag forming apparatus J similar to the bag forming apparatus H.
After molding and holding, the pair of open / close clamps 100 are closed by the operation of the open / close cylinder 104 and the front and rear inner end edges of the bag body 7 are folded inward as shown in FIG. 21 is completed, the peripheral edge of the bag mouth 7A of the bag body 7 to which the reinforcing material 8 is attached is folded inward as shown in FIG. In addition, when performing the folding process of the bag mouth 7A to the left and right and the front and the back, a folding line is provided in advance at the bag mouth 7A at the stage of molding the bag body 7 by the square bottom bag making machine. The left and right and front and rear outer edges of the bag mouth 7A are folded along the line, and can be favorably folded without wrinkles or bending.

As described above, in the present invention, the storage case is
Adsorb a piece of reinforcing material 8 from either one of
A pair of suction members 10 that transfer to the left and right sides of the bag mouth 7A,
Since 10A is provided, both sides are previously folded into an M shape and the bottom
Reinforce the left and right inner edges of the bag mouth 7A of the bag body 7 that is shaped like a square bottom
Material 8 can be attached, and left and right with the reinforcement 8 attached
Open the upper and lower edges of the bag mouth 7A with the folded body 11 at the upper edge.
Fold each bag inside with the closing clamp 100 to open the bag mouth.
By making the double structure,
The bag mouth 7A, which is weak in strength, can be reinforced. In addition, fold
Bag with open bag mouth 7A in the bag mouth suction Chakusochi F at step
The pressing claws 73, 73A, 91, 91A inserted into the inner surface of
Left and right folded body with the bag mouth adjusted by abutting the four inner corners of the
It is sandwiched between 11 and the backing plate 69, and the bag mouth 7A is opened forward and backward.
The mouth edge is pinched by the open / close clamp 100 that can be opened and closed.
Since the peripheral edge of 7A is folded inward, left and right and front of the bag mouth 7A
Excellent exterior design with no wrinkles or bends on the rear outer edge
The bag body 7 can be molded.

The present invention is not limited to the one embodiment described above, and various modifications can be made within the scope of the present invention. For example, the feed driving means for the suction member, the suction method, or the feed driving means for the reinforcing material or the presser pawl may be appropriately set. Also, an example using cardboard as the reinforcing material is shown, but a hard resin sheet or the like may be used, and the material thereof may be set appropriately.

[0024]

[Effects of the Invention] The present invention folds both sides into an M shape to create a bottom.
Reinforces the left and right inner edges of the bag mouth of the bag body with a square bottom shape
A reinforcing material, and a storage portion for accommodating the reinforcing material in a stack,
In the middle of transportation from this storage part to the standby position of the bag
The gluing device for gluing the reinforcing material and the
Adsorb strong material and transfer this reinforcing material to the left and right inner edges of the bag mouth.
Attached to the outside of the left and right upper edges of the bag mouth from the inside of the bag body
Left and right of the bag mouth by pressing against a pair of right and left flat backing plates
A pair of suction members for attaching the reinforcing material to the inner edge, and the receiving member
A bag mouth that is attached to a plate and holds the bag mouth of the bag body in an open state
The suction device and the upper surface of the receiving plate are rotatably supported by the shaft respectively.
Left and right folded body and this left and right folded body to the lower side
Left and right upper edge of the bag mouth that is rotated and the reinforcing material is attached
On the side of the receiving plate, and the left and right upper edges of the bag mouth inside
Folding drive means to fold it in and the front and rear upper edges of the bag mouth.
A pair of front and rear folding bodies that can be raised and lowered freely
Folding process of the bag and the left and right folds around the bag mouth edge
Occasionally, lifting and lowering to hold the bag mouth by contacting the inner corners of the bag body
Since it is equipped with a flexible bag molding device, it can be manufactured in advance.
With the sticking and folding the reinforcements of the bag mouth of the bag is a bag body can be continuously performed, the bag mouth rim folding
During a process, it is possible to provide a reinforcing member sticking device can Ru bag of preventing the occurrence of folds.

[Brief description of drawings]

FIG. 1 is a front view showing the outline of an embodiment of the present invention.

FIG. 2 is a plan view showing the outline.

FIG. 3 is a sectional view of an essential part showing the bag mouth suction device.

FIG. 4 is a plan view of an essential part showing the bag conveying device.

FIG. 5 is a plan view showing the vicinity of the attachment position.

FIG. 6 is a front view showing the reinforcing material transfer device.

FIG. 7 is a plan view showing the reinforcing material transfer device.

FIG. 8 is a cross-sectional view showing the suction member.

FIG. 9 is a side view showing the vicinity of the storage case.

FIG. 10 is a front view showing the bag forming apparatus.

FIG. 11 is a partially cutaway side view showing the bag forming apparatus.

FIG. 12 is a side view showing the left-right folding device.

FIG. 13 is a side view showing the front and rear folding device.

FIG. 14 is a side view of an essential part showing the front and rear folding device.

FIG. 15 is a perspective view of a main part showing a conveyance state of the bag.

FIG. 16 is a perspective view of a main part showing a step of attaching the reinforcing material.

FIG. 17 is a perspective view of a main part showing a step of attaching the reinforcing material.

FIG. 18 is a perspective view of a main part showing a step of folding the bag body left and right.

FIG. 19 is a perspective view of a main part showing a step of folding the bag body left and right.

FIG. 20 is a perspective view of a main part showing a front-back folding process of the bag.

FIG. 21 is a perspective view of the bag body.

[Explanation of symbols]

7 Bag 7A Bag mouth 8 Reinforcement 9,9A Storage case (storage) 10,10A Adsorption member 11 Left and right folding body 13 Cylinder (folding drive means ) 59 Nozzle (gluing device) 68 Sucker (bag mouth adsorption device) 69 Receiving Plates 73, 73A, 91, 91A Presser claw (bag forming device) 100 Open / close clamp (front and rear folding body )

Claims (1)

[Scope of utility model registration request] 1. A bottom having a square bottom with both sides folded in an M shape.
Reinforcing material that reinforces the left and right inner edges of the bag mouth of the bag body molded into
A storage unit that stacks and stores this reinforcing material, and this storage unit
To the reinforcing material during transportation from the bag to the standby position of the bag
Adhesive device for gluing and adsorbing reinforcing material from the storage section
Then, this reinforcing material is transferred to the left and right inner edges of the bag mouth, and the bag body is
Left and right attached to the outside of the left and right upper edges of the bag mouth from inside
It is pressed against a pair of flat plate-like receiving plates and is attached to the left and right inner edges of the bag mouth.
Attach a pair of suction members to which the reinforcing material is attached and the receiving plate.
Bag suction device for holding the bag mouth of the bag body in an open state
And a left rotatably supported on the upper surface of the receiving plate.
Rotate the right folded body and this left and right folded body downward
The left and right upper edges of the bag mouth to which the reinforcing material is attached.
Press on the plate side and fold the left and right upper edges of the bag mouth inward
The folding driving means and the ascending / descending upper and lower edges of the bag mouth.
A pair of front and rear folding bodies that can descend and descend freely, and this front and rear folding body
And during the folding process of the bag mouth edge by the left and right folding body,
A bag that can be raised and lowered by contacting the four corners of the inner surface of the bag and holding the bag mouth
An apparatus for attaching a reinforcing material to a bag body, which comprises a molding device .