JPH0745309Y2 - 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
Of the two sides that are wound in roll shape by Lumpur, outer
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, JP-A-55-
Japanese Patent No. 143258 discloses a polyelastomer made of a slippery material.
When stacking the packaging bags made of ethylene,
Since the friction resistance band is attached to the surface of the packaging bag, it does not become a packaging bag.
A large number of friction resistance bands are stacked on the lower surface of the tubular film.
The sheets are stacked on top of each other, and the uppermost friction resistance band is the label adsorption plate.
After adsorbing it with the label adsorption plate, turn the label adsorption plate 90 degrees counterclockwise.
Roll the hot melt adhesive on the back side of the friction resistance band.
Inject and label the friction resistance band glued in this way
Rotate the suction plate further 90 degrees to remove the tubular film.
Along the bottom surface, a frictional resistance band via a tubular film
By pressing a press plate onto the tubular film
A plastic having a resistance portion for preventing load collapse with a friction resistance band attached
A method of manufacturing a stick-made packaging bag for weight has been proposed.

[0003]

[Devised Problems to be Solved] However, the conventional example of
The device disclosed in JP-A-55-143258 has a tubular shape.
Label adsorption plate that adsorbs the friction resistance band on the lower side of the film
And the friction resistance glued by the label suction plate.
Supply the anti-belt along the back side of the tubular film
Attach a friction resistance band to the outer surface of the back surface of the tubular film
Therefore, a friction resistance band is attached to the inner surface of the tubular film.
Cannot be done, for example, a bag mouth such as a shopping bag
It can be used as a device to attach a reinforcing material to the inner surface of
I can't come.

The device disclosed in Japanese Utility Model Publication No. 57-48593 is also used.
As for the placement, although a reinforcing sheet can be attached to the inner side of the paper tube,
The device is cut into strips with a single vacuum feed roll.
Supply the cut reinforcing sheet between the inner and outer layers of paper and place it in the paper cylinder.
Since a reinforcing sheet is attached, the inner edges of the bag mouth
The reinforcing material cannot be attached to each.

That is, the left and right inner edges of the bag mouth are respectively supplemented.
When attaching a strong sheet, use one of the reinforcing sheets
Flip the gluing surface against the gluing surface of the other reinforcing sheet.
So that the gluing surfaces of the reinforcing sheets face outward.
It is necessary to arrange it symmetrically.
The device of Japanese Patent Publication No. 93-2 is provided with a single vacuum supply roll.
Place the reinforcing sheets back to back with the gluing side facing outward
It is not possible to supply it between the inner and outer paper sheets in the stacked state.
The side to which the reinforcing sheet is not attached because it is structurally impossible
Since the bag mouth of is not reinforced at all, its reinforcing effect is inferior
It was.

[0006] Therefore, the present invention is provided on the inner edges of the bag mouth , respectively.
Reinforcement material can be attached, and on the left and right above where the reinforcement material is attached
Fold the inner edge of the bag mouth including the edges into the inside and
An object of the present invention is to provide a bag body reinforcing material attaching device that can reinforce the bag mouth by adopting a heavy structure .

[0007]

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
A pair of adsorption members that adsorb and take out the uppermost reinforcing material,
Install this suction member between the storage part and the standby position of the bag.
At least the standby position of the bag after reciprocating
Reinforcing material adsorbed on both the adsorbing members with the left and right side edges of the bag
Substantially parallel to become manner and complement <br/> strong material transfer device supplied to the bag top, adhesion of hot-melt toward the one surface of the reinforcing member in the transfer Application of the reinforcing material transfer device when A gluing device that injects the agent and at least at the standby position of the bag
The gluing surface of the reinforcing material adsorbed by both adsorbing members is
Pivot downwards so that both suction members face outward.
Rotate to attach the reinforcing material to the left and right inner edges of the bag mouth.
The sticking drive means and the top edge of the bag mouth
And a folding device .

[0008]

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
The reinforcing material transfer device conveys each reinforcing material to a prefabricated bag body, and an adhesive agent is attached to the reinforcing material adsorbed by the adsorbing member from the gluing device during the conveyance .
Bag in which reinforcing material glued to sea urchin stands by at the reinforcing material transfer device
It is transported to the upper part of the body. And by the sticking drive means
Down the reinforcement so that the glued surfaces face outward.
Pivot to one side, and the reinforcing material is attached to the left and right inner edges of the bag mouth.
Of the bag mouth including the left and right inner ends of the bag mouth with the reinforcement material attached.
The peripheral edge is folded inward by the folding device.

[0009]

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 and adhered to the adhesive surface of the reinforcing material 8 adsorbed by 0, 10A, and the adsorbing members 10, 10A that adsorb the reinforcing material 8 with the adhesive thus attached are attached.
The attachment driving device E is rotated in the vertical direction to attach the reinforcing material 8 to the left and right inner edges of the bag mouth 7A.

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. A left-right folding device G is provided, which is composed of a rotatable left-right folding body 11 and a cylinder 13 connected to the left-right folding body 11 via a two-joint link arm 12. Between the left and right folding devices G, the bag 7 is inserted and arranged,
A bag forming apparatus H that abuts on each corner of the inner surface of the bag body 7 to form and hold the bag body 7 is provided to be movable up and down.

A bag mouth 7A is provided at the front-back folding position 2D.
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 portions of the attachment 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 the suction members 10, 10A is provided on the rear surface side of the rotary actuator 56. together but are attached through a spring 57, supported on the member 50 suction member 10,10A vertical reinforcement approximately 90 ° by swinging pivot to the right and left inside edge of the bag mouth 7A to material 8
A rotary actuator 58 serving as the sticking drive device E for sticking is attached. Further, the reinforcing material transfer device C
Nozzles 59 , which are gluing devices D, are fixed to the mounting frame 31 in the transfer path of each of the hot melt adhesives melted by the tank main body (not shown) from the nozzles 59 to the suction members 10 and 10A. The reinforcing material 8 is sprayed on the rear surface side of the reinforcing material 8 at appropriate intervals, and the reinforcing material 8 with the adhesive thus attached is rotated by the rotary actuator as shown in FIG.
By operating 56 , the supporting members 50 of the suction members 10 and 10A are horizontally moved substantially 90 so as to be parallel to the conveyor chain 2.
After being rotated and transferred by the transfer body 55 to the upper portion of the bag body 7 which has been conveyed to each of the attachment positions 2A and 2B, the rotary actuator 58 is operated to rotate the support member 50 by approximately 90 degrees in the vertical direction. By doing so, the reinforcing material 8 is attached to the bag mouth 7A of the bag body 7 held by the bag mouth suction device B.

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. If, consists mounting member 69 Metropolitan having a plurality of suction cups 68 to be driven feed by the feed drive device 67, the screw rod 66 a, which is directly connected to the motor 66 B is screwed to the elevating table 66, the the combined attachment member 69 of the suction cup 68 mounted through the elevating table 66 by driving the motor 66 B to the height of the bag 7 is height adjustable lifting.

The bag mouth suction device F at the left and right folding positions 2C
The left and right folding bodies 11 forming the left and right folding device G are located above the attachment member 69 of the suction cup 68 as shown in FIGS . 12 and 19.
A hinge 69A is rotatably supported on the surface, and the left and right folding bodies 11 are rotated inwardly by the operation of a cylinder 13 which is connected to the left and right folding bodies 11 via a two-joint link arm 12. The left and right upper edges of the worn bag mouth 7A are folded inward. Also, there is a figure above the left and right folding position 2C.
As shown in FIGS. 10 and 12 , a frame 70 of the bag forming apparatus H is installed on the main body frame 1 and is formed on the lower part of a 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 mold pressing claws 73, 73A to move forward and backward along the longitudinal direction of the bag body 7 are arranged in parallel, and the fixing plates 75 and the mounting base 72 are moved up and down. On the other hand, the mounting base 72 and the top board 70A of the frame 70 are connected by a lifting screw rod 77, and the handle 78 of the screw rod 77 is rotated to adjust the height of the mounting base 72 of the bag body 7. After adjusting according to the height, the clamp lever 79 attached to the mounting base 72 is pressed against 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 the rotary actuator 81 assembled and fixed to the frame 80, and the frame 80 is fixed to the slide cylinders 74, 74.
The piston rod of A is connected and guided along a rail 85 fixed to the upper surface of a guide frame 84 provided at the bottom 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 Presser foot 73, 73A
Is configured to contact the four corners of the inner surface of the bag mouth 7A and hold the bag body 7 by moving 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. ing.

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, a 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 driving device 67 of the bag mouth suction device B is operated to move each mounting member 69 to the center side of the conveyor chain 2, and the suction cup 68 provided on the mounting member 69 is attached to the bag mouth 7A of the bag body 7. After the bag mouth 7 is sucked by a negative pressure generating device (not shown) such as a compressor, the driving device 67 is actuated again to move the respective mounting members 69 in the direction in which the bag body 7 is separated. The attachment position 2A is made to stand by with the mouth 7A opened. Then, the elevating cylinder 54 of the frame 53 provided between the attachment position 2A and the outlet 44 of the reinforcing member 8 is operated to reinforce the suction member 10 mounted on the frame 53 via the transfer body 55. Drop parallel to material 8,
The reinforcement member 8 supplied to the outlet 44 is adsorbed to the adsorption pad 51 of the adsorption member 10 by a negative pressure generator (not shown), and the frame 54 is raised by the cylinder 54 to be accommodated in the accommodation case 9. Take out the reinforcing material 8. After that, the rotary actuator 58, which serves as the sticking drive device E, is activated to attach the suction member 10 below the frame body 53 to the gluing device D.
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 to face the nozzle 59 of the suction member 10 and is attracted to the suction member 10, the suction member 10 is moved by the rotary actuator 58. To the original horizontal position, and the reinforcing material 8 glued in this way is attached to the rotary actuator.
The bag mouth 7 of the bag body 7 conveyed by the conveyor 2 by the operation of 56.
The reinforcing member 8 which moves along the guide rod 52 provided on the frame body 53 and is adsorbed to the adsorbing member 10 while being horizontally rotated by approximately 90 ° in the clockwise direction along the longitudinal direction of the bag body 7 After transferring to the sticking position 2A waiting for
As shown in FIGS. 16 and 19 , the suction member 51 is swung downward by approximately 90 ° to operate the suction pad 51 to move the suction member 10 as shown in FIGS.
The reinforcing material 8 to be adsorbed on is pressed against the mounting member 69 through 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 right side in the transport direction. In addition,
When the uppermost stiffener 8 to be stored in the storage case 9 is taken out by the suction member 10, the elevating motor 43 of the support plate 40 is activated to raise the support plate 40 and the uppermost layer to be stacked on the support plate 40. The reinforcing material 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.
The uppermost reinforcing material 8 is sequentially faced to the outlet 44 and supplied every time the container is taken out. 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 moving table 38 to which the spare housing case 9A is attached is moved along the rails 37 of the fixed frame 30 to dispose the spare housing case 9A concentrically with the outlet 44, and the stiffener 8 is removed. By pulling out the case 9 from the receiving plate 36 and supplementing the reinforcing material 8, the reinforcing material 8 housed in each housing case 9, 9A can be continuously supplied. And the bag mouth 7A like this
When the sticking process of the inner edge of the right side is completed, the conveyor 2 is operated to convey the bag body 7 to the sticking position 2B, and the bag 7 is stored in the storage case 9 by the suction member 10A as in the sticking process described above. After taking out the upper reinforcing material 8 and applying the hot melt adhesive by the gluing device D, it is conveyed to the adhering position 2B, and the rotary pad 58 is operated to rotate the suction pad 51 approximately 90 ° downward. Then, as shown in FIG. 17, 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. To wear. 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 press the holding claw 7
After lowering 3, 73A into the inside of the bag body 7, the slide cylinders 74, 74A are actuated to move the holding claws 73, 73A to 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 inner surface of the bag body 7 is brought into contact with each corner to hold the bag body 7 by molding. Reinforcing member 8 that is molded and held by the presser pawls 73 and 73A and is held in the open state by the bag mouth suction device F of the bag body 7.
As shown in FIGS. 18 and 19, the left and right upper outer edges of the bag mouth 7A to which the affixing is attached are provided at the upper part of the bag mouth adsorbing device F as shown in FIG.
The cylinder 11 is actuated by the cylinder 13 to rotate inward through the two-bar link arm 12 and folded inward, and the bag mouth 7A folded inward is sandwiched between the left and right folding bodies 11 and the mounting member 69 to form a bag. The left and right upper edges of the mouth 7A are folded inward and the reinforcing material 8
The adhesive surface of is closely adhered to the left and right inner edges of the bag mouth 7A for strong adhesion. After this, when the left and right folds are complete, presser foot
Lifting cylinder 76 and slide cylinder for moving 73, 73A
74, 74A is retracted to return the presser pawls 73, 73A to the standby state, and thus the bag body 7 for which the left and right folding processes have been completed
Is conveyed to the front-back folding position 2D. At the front-rear folding position 2D, after the bag body 7 is molded and held by the holding claws 91 and 91A of the bag molding device J similar to the bag molding device H, the pair of the front-rear folding device I and the open-close clamp 100 are opened and closed by the open-close cylinder 104. 20 and then the front and rear inner edges of the bag 7 are folded inward as shown in FIG. 20 to complete the whole process. As shown in FIG. 21, the bag 7 to which the reinforcing member 8 is attached is The peripheral edge of the bag mouth 7A is folded inward. In addition, when performing the folding process of the bag mouth 7A in the left-right direction and the front-rear direction, a folding line is provided in advance in the bag mouth 7A at the stage of molding the bag body 7 by the square-bottom bag making machine. 7A along the line
The left and right edges and the front and rear outer edges are folded so that they can be folded well without wrinkles or bending.

As described above, in the present invention, the storage case is
A pair of suction members 10 and 10A for suctioning the reinforcing material 8 which has been cut to a predetermined size from one of the strips 9 and 9A are provided .
While the reinforcing material 8 is being conveyed to the bag mouth 7A of the bag body 7 by the transfer body 55, the hot melt adhesive melted by the tank body (not shown) from the nozzle 60 of the gluing device D is applied to the back surface side of the reinforcing material 8. Adhesive is adhered to the reinforcing material 8 by injecting at an appropriate interval, and then the suction portion conveyed above the bag body 7.
Neck the materials 10 and 10A to the lower side with the rotary actuator 58.
By swinging and swinging
Attach the reinforcing material 8 to the bag mouth 7A on the left and right inner edges, respectively.
By attaching the reinforcing material 8 to the left and right inner edges of the bag mouth 7A.
Can be attached, and the left and right upper ends to which the reinforcing material 8 is attached
Open and close the front and rear top edges of the bag mouth 7A with the left and right folding body 11.
With the lamp 100, fold each bag inward to open the bag mouth
With a heavy structure, this type of bag 7 has the highest strength.
The weak bag mouth 7A can be reinforced.

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.

[0025]

[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,
A pair of adsorption of the uppermost reinforcement from this storage part
And a suction member of the storage unit and the bag body.
By reciprocating between the standby positions, at least the above
When the bag is in the standby position,
Above the bag so that it is almost parallel to the left and right edges of the bag
A reinforcing material transfer device for supplying the parts, a gluing device for emitting a hot-melt adhesive toward the one surface of the reinforcing member in the transfer Application of the reinforcing member transfer device, at least the bag
Of the reinforcing material adsorbed to both the adsorbing members at the standby position of
Make sure that the gluing surfaces of both of the suction members face outward.
Pivot downward to rotate the reinforcement to the left and right of the bag mouth.
Sticking drive means for sticking to the inner edge, and the upper edge of the peripheral edge of the bag mouth
By having a folding device that folds the edges inward, reinforcing materials can be attached to the left and right inner edges of the bag mouth, respectively.
The inside of the bag mouth edge including the left and right upper edges with the reinforcing material attached
By folding the bag into a double-layered bag mouth,
It is possible to provide a device for attaching a reinforcement member for a bag body that can reinforce the .

[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 (folding device) 55 Transfer (reinforcing material transfer) 58 Rotary actuator (sticking drive means ) 59 Nozzle (gluing device) 100 Open / close clamp (folding device )

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
A pair of adsorbing members for adsorbing and taking out the uppermost reinforcing material from the adsorbing member, and the adsorbing members at the standby positions of the storage section and the bag body.
Waiting for at least the bag by moving back and forth between each
Reinforcing material that is adsorbed by both adsorption members at the left and right sides of the bag
Supply it to the upper part of the bag so that it is almost parallel to the side edge.
That the reinforcing material transfer device, a gluing device for emitting a hot-melt adhesive toward the one surface of the reinforcing member in the transfer Application of the reinforcing material transfer device, the standby position of at least the bag
And the gluing surface of the reinforcing material adsorbed by both the adsorbing members
Neck the lower part so that both suction members face outward.
Swing and rotate to attach the reinforcing material to the left and right inner edges of the bag mouth
The sticking driving means for causing the inner peripheral edge of the bag mouth
An apparatus for attaching a reinforcing material to a bag body, comprising: a folding device for folding .