JPS6218142B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a wrapping bag for producing rice balls wrapped in seaweed, that is, an inner bag made of synthetic resin and an outer bag, in which glue is wrapped around the outer circumferential surface of the inner bag. When eating, the inner and outer bags are opened, rice (including sushi rice) is placed in the inner bag, the inner bag is pulled out from the cut out part of the outer bag, and the rice is automatically wrapped in nori. The present invention relates to a method and apparatus for manufacturing a wrapping bag for making rice balls.

(Prior art and its problems) Conventionally, when producing a wrapping bag for producing glue rolls as described above, glue was wrapped around the outer circumferential surface of the inner bag by hand, and the inner bag wrapped with this glue was also held by hand. This was all done manually by inserting it into the outer bag and then gluing the opening edge on the inner circumferential surface of the outer bag to the opening edge on the outer circumferential surface of the inner bag. For this reason, there was a problem in that it required a great deal of labor when producing the packaging in large quantities.

(Technical Means for Solving the Problems) In view of the above-mentioned problems, the present invention aims to provide a method and apparatus that can mechanically and easily manufacture packaging bags and are suitable for mass production. .

Therefore, the technical means of the method of the present invention is to insert a template 3 into an inner bag 2 made of synthetic resin that is placed in a first mold 1 that is successively fed, lift this template 3, and insert the template 3 into the inner bag. After inserting the glue 5 into the gap 4 between the bag 2 and the first formwork 1, the template 3 is dropped into the first formwork 1, and both ears pieces 5a of the glue 5 are raised up. By folding the pieces 5a and 5b in opposite directions, the glue 5 is wrapped around the outer peripheral surface of the inner bag 2, and then the template 3 is taken out from the first mold frame 1 together with the inner bag 2 wrapped with the glue 5. , inserted into the synthetic resin outer bag 7 placed in the second mold 6 that is sent sequentially,
The overlapping opening edges 2a and 7a of the inner bag 2 and outer bag 7 in the second formwork 6 are thermally welded to each other,
After that, the template 3 is placed in a second container together with a package 15 consisting of inner and outer bags 2, 7 and glue 5 sealed between them.
Further, the technical means of the device of the present invention is that the first mold frame 1 and the mold plate 3 are formed to accommodate the inner bag 2 and the outer bag 7 and the mold plate 3 made of synthetic resin. A second conveyor 9 and a second conveyor 9 each carry a large number of the second formwork 6, the first formwork 1, and the second formwork 6, respectively.
A conveyor 10, a first form insertion mechanism 11 that sequentially inserts templates into the inner bags 2 put into the first form 1, and a first form insertion mechanism 11 that raises the templates 3 in the first form 1 to 1
The glue 5 is inserted into the gap 4 formed between the mold 1 and the inner bag 2, and the mold plate 3 is lowered so that both ears 5a, 5a of the glue 5 that rises from the first mold 1 are placed in opposite directions. A glue winding mechanism 12 wraps glue 5 on the outer circumferential surface of the inner bag by folding the inner bag, and a glue wrapping mechanism 12 wraps the template 3 in the first mold frame 1 onto the outer bag 7 placed in the second mold frame 6. The second template insertion mechanism 13 is inserted together with the inner bag 2 wrapped with the inner bag 2 and the overlapping opening edges 2a and 7a of the inner bag 2 and the outer bag 7 in the second mold frame 6 are heat-welded to each other. It is equipped with a sealing mechanism 14 and a packaging removal mechanism 16 that takes out a wrapping bag 15 consisting of inner and outer bags 2, 7 and glue 5 inserted between them from inside the first mold 6 together with a template 3. It is characterized by

(Example) Examples of the present invention will be described in detail below based on the drawings.

FIG. 1 is an overall view of the apparatus according to the present invention, and FIGS. 2A to 2A show the packaging manufacturing process and its usage.

First, as shown in FIG. 1, the first conveyor 9 and the second conveyor 10 are arranged parallel to each other, and the starting end of the second conveyor 10 is located in the middle of the first conveyor 9. Further, it is installed so that its terminal end is located at the terminal end of the first conveyor 9. These first and second conveyors 9 and 10 each consist of an endless chain conveyor, and the first conveyor 9 is equipped with a large number of first formworks 1 at predetermined intervals, and the second conveyor 10 A large number of second formworks 6
... are installed in positional relationships corresponding to the first formworks 1, respectively. In addition, these conveyors 9,
10 are driven by the same drive source, and are configured to convey the first formwork 1 and the second formwork 6 intermittently and in synchronization with each other. As shown in FIG. 2A, each first formwork 1 includes parallel side wall portions 1b on both left and right sides of the rear portion of the top surface of the bottom wall portion 1a to form a housing portion 17 that is approximately baseball-base shaped in plan view.
1b, with diagonal side wall portions 1c, 1c protruding from the center of the front part, and the parallel side wall portions 1b, 1b are formed one step higher than the diagonal side wall portions 1c, 1c. Tapered surfaces 1d, 1d are formed such that they become narrower toward the rear, and through holes 1e, 1e are further provided in the bottom wall portion 1a. As is clear from Fig. 2, the second formwork 6 is the same as the first formwork 6.
The first formwork 1 has almost the same structure as the formwork 1.
Parallel side walls 6b, 6b are provided on the top surface of the bottom wall 6a to form a housing portion 18 that is slightly larger than the housing portion 17.
and oblique side wall portions 6c, 6c are provided protrudingly, and a horizontally elongated through hole 6e is provided in the bottom wall portion 6c.
The first formwork 1 is rotatably attached to two endless chains (not shown) of the first conveyor 9 via a shaft (not shown) that crosses the conveyance direction, and the formwork Guide rails 21 and 22 are fixedly installed on the device frame 20 via guide rollers 19 that are pivotally attached to the lower part of the guide rails 21 and 22.
(See Figure 3). The second formwork 6 is also installed on the second conveyor 10 in the same manner as the first formwork 1 described above.

An inner bag insertion mechanism 23 is installed on the starting end side of the first conveyor 9. As shown in FIG. 3, this inner bag loading mechanism 23 slides a sliding block 25 on a pair of guide frames 24, 24 installed horizontally above the first conveyor 9 and across the conveyor. A fluid pressure cylinder 26 is erected on this sliding block 25, and a vacuum suction unit 27 is connected to the piston rod thereof, and this sliding block 25 is driven via a crank mechanism 28 resting at both ends. Interlockingly connected to the shaft 29,
On the other hand, an inner bag storage case 30 with both upper and lower ends open is provided on the side of the first conveyor 9, and a bottom part 32 connected to an elevating drive means 31 is provided at the bottom of the case 30. In operation, while the sliding block 25, which is reciprocated through a predetermined stroke by the crank mechanism 28, is at rest at one end of the stroke as shown in FIG.
The vacuum suction unit 27 is lowered by the cylinder 26, and its suction pad 27a suctions the uppermost inner bag 2 stored in the storage case 30. In this state, the inner bag 2 is pulled up as the unit 27 returns to the upward position. Then, the inner bag 2 is transferred to a position directly above the first formwork 1 (the other end of the stroke) by the forward movement of the sliding block 25, and while the sliding block 25 is at rest there, it is vacuum suctioned by the cylinder 26. As the unit 27 descends, the inner bag 2 is received in the accommodating part 17 of the first formwork 1 which is on standby, and then detached from the suction pad 27a by releasing the suction, and thus returns to the accommodating part as shown in FIG. 2A. It was introduced on 17th.
After inserting the inner bag 2, the vacuum suction unit 27 returns to its original position. Incidentally, when the uppermost inner bag 2 is taken out from the storage case 30 by the suction pad 27a and its level is lowered, the bottom plate 32 is raised by the lifting drive means 31 by that amount, and the uppermost inner bag 2 is taken out from the storage case 30 by the suction pad 27a.
is always maintained at a certain level.

The first template insertion mechanism 11 is connected to the first conveyor 9
The template 3 is inserted into the inner bag 2 placed in the upper first mold 1. The operation of inserting the template 3 into the inner bag 2 is shown in FIGS. 2B and 2C. As is clear from FIGS. 1 and 2, the template 3 is made of plastic and is shaped like a baseball base, and its triangular part is fitted into the inner bag 2. A pin hole 3a is provided at the center of the upper side. As shown in detail in FIGS. 4 and 5, the first template insertion mechanism 11 includes a stocker 33 that stacks a large number of templates 3 and stores them in a vertically slidable state, At the rear of the stocker 33, there is a pusher 34 that pushes out the lowest templates 3 in the stocker 33 forward one by one and inserts them into the opened inner bag 2 on the first mold 1;
Inner bag opening device 3 that opens the inner bag 2 inserted into the inner bag
It consists of 5. The stocker 33 stores and holds a large number of templates 3 in a space formed by rear guide vertical frames 36, 36, front guide vertical frames 37, 37 having a substantially V-shaped cross section, and a bottom frame 38. At the same time, the lower end surfaces of the front guide vertical frames 37, 37 and the bottom frame 3
A gap 39 slightly larger than the thickness of one template 3 formed between the upper surface of the template 3 and the upper surface of the template 3 allows the lowermost template 3 to be discharged forward. Further, the pusher 34 includes a pair of angled pusher bodies 42, 42 that are movable in the front and rear directions via a pair of left and right horizontal guide rails 40, 40 and guide rollers 41.
As shown in FIG. 4, the position level of the upper surface of the pusher body 42 is at the middle of the thickness of the lowermost template 3, and the rear end portions of the pusher bodies 42, 42 are connected to the crank mechanism 4.
3 to the drive shaft 43, so when the drive shaft 44 rotates, the crank mechanism 4
The pusher bodies 42, 42 are connected to the guide rail 4 by the arms 43a and links 43b, 43c of 3.
It reciprocates along lines 0 and 40, and when it moves forward, its tip pushes the lowermost template 3 forward. Further, the inner bag opening device 35 includes a pair of vacuum suction units 45, 4 disposed on the upper and lower sides of the first formwork 1 on the first conveyor 9, one on the left and one on the left.
5 and 46, 46, each upper unit 45
is connected to the piston rod of a hydraulic cylinder 48 installed on the support frame 47, and each lower unit 46 is connected to the piston rod of a hydraulic cylinder 49 installed on the lower part of the guide rail 21, so that each lower unit unit 4
6 is pulled up by the cylinder 49 to the position where the suction pad 46a enters the through hole 1e of the first formwork 1 and comes into contact with the lower surface of the inner bag 2, and is held in a state where the lower surface of the inner bag 2 is suctioned. Each upper unit 45 is similarly lowered by the cylinder 48, and after the suction pad 45a attracts the upper surface of the inner bag 2, it is pulled up by the cylinder 48, so that the inner bag 2 is in the state shown by the imaginary line in FIG. When opened, the template 3 is pushed out by a pusher 34 and inserted into the inner bag 2.
In addition, when inserting the template, if the inner bag 2 is not inserted into the first formwork 1 due to some mistake, the absence of the inner bag 2 on the first formwork 1 can be detected appropriately. The solenoid 50 is actuated by the detection signal, and the stopper pawl 51 is activated by the link 43.
b is hooked onto the pin 52 of the pusher 3.
4 is temporarily suspended.

After the template 3 is inserted into the inner bag 2 on the first mold 1 as described above, the glue 5 is wrapped around the outer peripheral surface of the inner bag 2 by the glue wrapping mechanism 12.
As shown in FIGS. 6 and 7, this glue winding mechanism 12 sequentially applies glue 5 to
a glue supplying device 53 that supplies glue one by one, a lifting device 54 that raises and lowers the template 3 on the first mold 1 together with the inner bag 2, and a folding device that folds the supplied glue 5 onto the inner bag 2. It consists of 55. For example, as illustrated in FIG. 6, the glue supply device 53 has a vacuum suction unit 57 protruding from a rotor 56 that rotates forward and backward within a certain angular range, and a suction pad 57a provided at the tip of this unit 57. , a glue stocker 58 installed so that the bottom surface slopes downward.
The glues 5... which are arranged and housed in are suctioned and taken out one by one from the foremost part, and placed on the horizontal support frames 59, 59 installed on the sides of the first formwork 1,
The glue 5 placed here is extruded and supplied onto the first formwork 1 by a push head 61 which is disposed between support frames 59 and 59 and is reciprocated with a constant stroke by a fluid pressure cylinder 60. It is something. In this case, the push head 61 is used for the first formwork 1.
The glue 5 extruded upward is as shown in Fig. 2D,
Parallel side wall portions 1b, 1b front end tapered surfaces 1d, 1d
The position is regulated by the diagonal side wall portions 1c and supported on the upper surface of the 1c. The lifting device 54 includes a vacuum suction unit 62, which is connected to a piston rod of a fluid pressure cylinder 63 installed at the upper part of the machine frame 20, and which operates the cylinder 63 prior to supplying the glue 5. The mold plate 3 is sucked and held by the suction pad 62a, and then raised to a predetermined position to create a gap for inserting glue between the upper surface of the diagonal side walls 1c, 1c of the first mold frame 1 and the lower surface of the inner bag 2. 4 is formed, and after the glue 5 has been inserted into the gap 4, the cylinder 63 lowers the mold plate 3 together with the inner bag 2 into the housing part 17 of the first mold 1, and thereby the glue 5 is inserted into the gap 4. is pressed to make both the ear pieces 5a, 5a stand up almost vertically from the first mold frame 1 as shown in FIG. The folding device 55 folds the ears 5a, 5a of the glue 5 erected as described above in opposite directions. As shown in FIG. 7, the rotating arm 64 is rotated by a drive shaft 66 and pushes down one of the ear pieces 5a with its lower end to open the inner bag 2. Also, as shown in FIG. 7, the fixing bar 65 is fixed to the support frame 67, and as the first formwork 1 moves, it pinches the other ear piece 5a and folds. It is designed to be superposed on one of the above-mentioned ear pieces 5a. In this way, the first formwork 1 is folded into the folding device 5.
5, the glue 5 on the formwork 1 is wrapped around the outer peripheral surface of the inner bag 2 into which the template 3 has been inserted, as shown in FIG.

On the starting end side of the second conveyor 10, there is glue 5.
The outer bag 7 to cover the inner bag 2 wrapped with
An outer bag input mechanism 68 is provided for inputting the inner bag, but since this outer bag input mechanism 68 has a similar structure to the inner bag input mechanism 23, its explanation will be omitted.

The outer bag 7 thrown into the second mold frame 6 on the second conveyor 10 by the outer bag insertion mechanism 68 is inserted into the first mold on the first conveyor 9 by the second template inserting mechanism 13. A template 3 in a mold 1 is inserted together with an inner bag 2 whose outer peripheral surface is wrapped with glue 5. As shown in FIG. 8, this second template insertion mechanism 13 includes an outer bag opening device 69 that opens the outer bag 7 in the second mold frame 6, and an outer bag opening device 69 that opens the outer bag 7 in the second mold frame 6, and an outer bag opening device 69 that opens the outer bag 7 in the second mold frame 6, and It consists of a flotation device 70 that levitates the bag 2 and the glue 5 wound thereon to a predetermined height, and a pusher 71 that pushes the template 3 floated on the first mold frame 1 toward the second mold frame 6 side. The outer bag opening device 69 has the same structure as the inner bag opening device 35, and includes a pair of vacuum suction units 7 disposed on the left and right sides of the second form 6 on the second conveyor 10, respectively.
2, 72 and 73, 73, each upper unit 72 is connected to a piston rod of a fluid pressure cylinder 74, and each lower unit 73 is connected to a piston rod of a fluid pressure cylinder 75. This is exactly the same as the bag opening device 35. The floating device 70 is a guide rail 21
A pair of front and rear fluid pressure cylinders 77, 77, 78, 78 are installed at the lower part of the body via a support frame 76.
The front cylinder 77 has a push-up head 79 attached to the upper end of the piston rod that is connected to the first formwork 1.
The template 3 is supported from the outside of the cylinder 78 at the rear.
The push-up head 80 is connected to the through hole 1 of the first formwork 1.
It is designed to support the template 3 from e. Also,
The pusher 71 includes a pusher main body 82 that moves horizontally in a direction perpendicular to the formwork conveyance direction while being guided by a pair of horizontally suspended guide rails 81, 81.
It is interlocked and connected to the drive shaft 84 via. Therefore, the pusher body 82 is reciprocated by a predetermined stroke due to the rotation of the drive shaft 84, and the mold plate 3 floated above the first formwork 1 is moved inside the inner part wrapped with the glue 5 by the forward movement of the pusher body 82. It is inserted together with the bag 2 into the opened outer bag 7 on the second formwork 6. The operation at this time is shown in FIGS.

The second mold frame 6 is inserted by the second mold plate insertion mechanism 13.
The opening edges 2a and 7a of the inner bag 2 inserted into the upper outer bag 7 are sealed together with the outer bag 7 by the sealing mechanism 14, and the sealed portion is indicated by S in the figure. As shown in FIG. 9, this sealing mechanism 14 has a pair of upper and lower sealing heads 86a and 86b, each having a heater 85a and 85b protruding from their tips, sandwiching the second formwork 6 on the second conveyor 10. These seal heads 86a, 8 are disposed vertically and facing each other.
6b is supported by a support frame 87 so as to be able to slide in the vertical direction, respectively.
It is held by the holding frames 89a and 89b of b via coil springs 90a and 90b, respectively, and the mounting bases 88a and 88b are connected to the piston rods of fluid pressure cylinders 91a and 91b installed at the upper and lower parts of the support frame 87. So, heater 8
5a and 85b are formed in the shape of a band plate having a relatively thin thickness and a width approximately corresponding to the width of the opening side of the closed outer bag 7. Therefore, in operation, the cylinder 91a , 91b move in opposite directions, and at the same time the heater 85a of the upper seal head 86a comes into elastic contact with the overlapping upper opening edges of the inner and outer bags 2 and 7 on the second formwork 6. Lower seal head 86
The heater 85b of b comes into elastic contact with the lower opening edge, thereby thermally welding the opening edges 2a, 7a of the inner and outer bags 2, 7 over almost the entire circumference, as shown in FIG. . By thermally welding the opening edges of the inner and outer bags 2 and 7 to each other by this sealing mechanism 14, a rice-rolled rice ball manufacturing bag 15 consisting of the inner and outer bags 2 and 7 and the glue 5 sealed between them is formed. That will happen.

The packaging bag 15 formed in the second mold frame 6 on the second conveyor 10 as described above is formed into a template by the packaging take-out mechanism 16 provided near the discharge side end of the second conveyor 10. It is taken out and discharged together with 3. This bag removal mechanism 16 is the tenth
As shown in FIGS. 12 to 12, the lower end portion is pivotally mounted on a base 92, and a hydraulic cylinder 93 is used to move the conveyor 10 to the pick-up position of the discharge end of the conveyor 10 and to the outside from the pivot point. A horizontal support shaft 95 is pivotally attached to the upper end of a swing arm 94 that swings back and forth within a required angular range between discharge positions.
5, the suction pad 96a is always opened downward to suction and pick up the mold plate 3 inserted into the wrapping bag 15 on the second mold frame 6 at the pick-up position, and release the suction at the release position. It is equipped with a vacuum suction unit 96 that releases the template 3 together with the wrapping bag 15, and the tip of the template 3 is directly below the release position.
A template collection bar 97 is provided, which projects upward so as to face the pin hole 3a of the machine, and which sequentially inserts and collects the templates 3 released together with the wrapping bag 15 at this release position through the pin hole 3a, Further, near the tip of the template collecting bar 97, a packaging separation device 98 is provided to separate the packaging bags 15 from the templates 3 that are successively passed through the bar 97.

To explain the bag removal mechanism 16 in more detail, two vacuum suction units 96 are disposed on both left and right sides of a horizontal mounting base 99 fixed to a horizontal support shaft 95, and the horizontal support shaft 95 is connected to the upper end of the swing arm 94. It is rotatably supported by a bearing 100 fixed to the mount 99, and in order to keep the mount 99 horizontal at all times, a forward/reverse motor 101 and a chain/sprocket mechanism 102 are used to correspond to the swing angle of the swing arm 94. It is adapted to be rotated in a direction opposite to the swinging direction. As is clear from Fig. 10, an intermediate mounting table 1 is placed between the bag pick-up position (left side of the figure) and the bag release position (right side of the figure).
03 is provided, and when the swinging arm 94 is tilted to the left in the figure, the left suction pads 96a, 96a on the horizontal mounting base 99 are positioned directly above the second formwork 6, and the template 3 is suctioned. The suction pads 96a, 96a on the right side are located directly above the intermediate mounting table 103, and the forward movement of the fluid pressure cylinder 93 from the leftward tilted state of the swing arm 94 causes the swing arm 94 to move as shown in the solid line in the figure. When the template 3 and the packaging bag 15 are swung to the right as shown by , the template 3 and the wrapping bag 15, which have been suction-held and transferred by the suction pads 96a and 96a on the left side, are placed on the intermediate mounting table 103, where they are released from suction for a time. While it is left unattended, the suction pad 96 on the right side
a, 96a will move to the bag release position, and then, when this swinging arm 94 swings to the left due to the return movement of the cylinder 93 and assumes the left-leaning position again, the left suction pads 96a, 96a will move to the bag release position. is the second subsequent
The mold plate 3 on the formwork 6 is held by suction, and the right suction pads 96a, 96a suction and hold the mold plate 3 left on the intermediate mounting table 103, and the swing arm 94 moves the cylinder 93 forward. When it swings to the right and assumes the right-leaning position again, the left suction pads 96a, 96a release the suction and leave the template 3 and packaging bag 15 on the intermediate mounting table 103, while the right suction pad 96a , 96a release the suction at the wrapping bag release position and release the template 3 together with the wrapping bag 15. At the packaging release position, when the template 3 is released together with the packaging 15, the pin hole 3a of the template 3 engages with the tip of the template collection bar 97, as shown in FIGS. 1 and 12. As a result, the template 3, together with the wrapping bag 15, slides down along the inclined portion 97a of the template receiving and collecting bar 97 while rotating downward around the pin hole 3a. At the initial stage when the bar 97 is engaged, the packaging separation device 98 separates the packaging from the packaging 1.
5 is scraped off as shown in FIG. collected in a state. The bar 97 is attached to the support frame 107 via a plurality of attachment pieces 108. As illustrated in FIG. 12, the bag separation device 98 has scraping blades 105 protruding from the outer periphery of a rotor 104 driven by a prime mover (not shown).
The scraping blade 105 is scraped off by the rotation of the rotor 104.
The blade 105 is rotated so that the tip of the blade 105 scrapes off the wrapping bag 15 that is descending together with the template 3 along the template collection bar 97. The packets 15 thus scraped off are received on the belt 106a of the lower package discharge conveyor 106 and sequentially discharged to predetermined locations. Reference numeral 109 in FIG. 12 is a counter that detects and counts the number of packaging bags 15 dropped onto the belt 106a of the packaging conveyor 106 and discharged by the conveyor 106 one by one.

Note that the wrapping conveyor 106 is a belt 10.
It is equipped with a variable speed drive unit that temporarily drives the bag 6a at high speed, and when the counter 109 counts a certain number of packets 15 (for example, 50 pieces), the signal is used to drive the bag 6a at a higher speed than the previous speed for a certain period of time. The belt 106a is run, thereby wrapping the bag 15.
The bags 15 are conveyed in units of 50 at wide intervals, so that the number of bags 15 to be carried out can be easily checked.

The manufacturing process of the packaging bag 15 manufactured by the packaging manufacturing apparatus as described above is as sequentially shown in FIGS. In addition, the method of using this wrapping bag 15 is as shown in O and W in the same figure.
The inner and outer bags 2 and 7 in step 5 are opened by cutting them with scissors or the like along the lower side of the sealed portion S, and the rice (including sushi rice and gomoku meshito) R is loaded into the inner bag 2 through this opening, and For example, hold the outer bag 7 with your left hand,
After cutting off the tip 7a of the outer bag 7 along a perforation line T cut out in advance on the tip of the outer bag 7 with the right hand, lightly pull out the tip of the inner bag 2 protruding from the cutout. Then, the seaweed 5 will be automatically wrapped around the rice R, creating a freshly made norimaki rice ball.

(Effects of the present invention) According to the method of the present invention, first, a template is inserted into an inner bag made of synthetic resin that is placed in the inner bag of the first mold frame that is sent sequentially, and this template is lifted to form the inner bag. After inserting glue into the gap between the mold and the first mold, drop the template into the bag inside the first mold, raise both ears of glue, and fold these ears in opposite directions. Since the glue is wrapped around the outer circumferential surface of the inner bag using the template and the first formwork, the glue can be wrapped around the inner bag easily, reliably and quickly. The wrapped inner bag is taken out from the first mold and inserted into the synthetic resin outer bag that has been placed in the second mold inner bag that is sent sequentially, and the inner bag in the second mold inner bag is removed. The overlapped opening edges of the outer bag and the outer bag are heat welded, and then the template is removed from the second mold together with the envelope consisting of the inner and outer panels and the glue sealed between them. By using the first formwork and the second formwork, the inner bag can be inserted into the outer bag easily and reliably, and the efficiency of manufacturing the packaging bag is dramatically improved compared to conventional work. can be improved.

The apparatus of the present invention also includes a first mold frame and a second mold frame formed to accommodate the inner bag and outer bag made of synthetic resin and the mold plate, and the first mold frame and the second mold frame, respectively. A first conveyor and a second conveyor that load and convey a large number of templates, respectively; a first template insertion mechanism that sequentially inserts templates into inner bags placed in the first mold; Raise the template in the first mold and insert the glue into the gap formed between the first mold and the inner bag, and then lower the template to make both ears of the glue rise from the first mold. a glue wrapping mechanism that wraps glue around the outer circumferential surface of the inner bag by folding the inner bag in opposite directions; a second template insertion mechanism that is inserted together with the inner bag; a sealing mechanism that heat-welds the overlapping opening edges of the outer bag and the inner bag in the second mold frame; and a bag removal mechanism that takes out the bag consisting of the glue sealed between them together with the template. It is ideal for mass production of packaging bags as it can significantly reduce input.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view of a manufacturing device for a rice-wrapped rice-grilled bag according to an embodiment of the present invention, FIG. 3 and 3 are explanatory perspective views showing how to use the manufactured packaging bag, FIG. 3 is an enlarged detailed sectional view taken along the line ``-'' in FIG. 1, FIG. 4 is an enlarged detailed sectional view taken along the ``-'' line in FIG. 4 is a sectional view taken along the line, FIG. 6 is an enlarged detailed sectional view taken along the line 1 of FIG. 1, FIG. 7 is an enlarged detailed sectional view taken along the line 1 of FIG.
9 is an enlarged detailed sectional view taken along the line - in Fig. 1, Fig. 10 is a partially sectional front view of the bag removal mechanism, and Fig. 11 is an enlarged detail taken along the line XI--XI in Fig. 1. The cross-sectional view, FIG. 12, is a partially cutaway enlarged detailed cross-sectional view taken along the line XII--XII in FIG. 1... First formwork, 2... Inner bag, 3... Template plate, 4... Gap, 5... Glue, 5a, 5a... Ledge piece, 6... Second formwork, 7... Outer bag, 9... First conveyor , 10...Second conveyor, 11...First template insertion mechanism, 1
2... Glue winding mechanism, 13... Second template insertion mechanism,
14... Seal mechanism, 15... Packaging bag, 16... Packaging removal mechanism.

Claims (1)

[Claims] 1. A template is inserted into an inner bag made of synthetic resin that is placed in the first mold frame that is sent in sequence, and the template is lifted to close the gap between the inner bag and the first mold frame. After inserting the glue, drop the template into the first mold to make both ears of the glue stand up, and fold the ears in opposite directions to wrap the glue around the outer circumferential surface of the inner bag. Then, the template is taken out from the first mold together with the inner bag wrapped with glue, and inserted into the synthetic resin outer bag placed in the second mold, which is sent sequentially. The overlapping opening edges of the inner bag and outer bag in the second mold frame are heat welded, and then the template is placed in the second mold together with the wrapping bag consisting of the inner and outer bags and the glue sealed between them. A method for producing a wrapping bag for producing norimaki rice balls, characterized in that the wrapping bag is taken out from the bag. 2 A first mold frame and a second mold frame formed to accommodate an inner bag, an outer bag made of synthetic resin, and a mold plate, and a large number of each of the first mold frame and the second mold frame are installed. A first conveyor and a second conveyor convey these, a first template insertion mechanism that sequentially inserts the templates into the inner bags placed in the first mold, and a mold in the first mold. Raise the board and insert the glue into the gap formed between the first mold and the inner bag, then lower the mold and fold both ears of the glue that rises from the first mold in opposite directions. A glue-wrapping mechanism that wraps glue around the outer peripheral surface of the inner bag, and a template in the first mold frame are inserted into the outer bag placed in the second mold together with the inner bag wrapped with glue. a second template insertion mechanism; a sealing mechanism for thermally welding the overlapping opening edges of the outer bag and the inner bag in the second mold frame;
Manufacture of a wrapping bag for producing rice-wrapped rice balls, comprising: a wrapping mechanism for taking out a wrapping bag consisting of an inner and outer bag and glue inserted between them from within a mold together with a template. Method.