JP3401237B2 - Bag manufacturing equipment - Google Patents

Description

BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention relates to a bag manufacturing equipment capable of automatically producing bags of envelopes. 2. Description of the Related Art As shown in FIG. 17, a conventional envelope is provided with a longitudinal seam or bottom sealing portion, ie, a back sticking portion 22a, at the center or edge of one surface of an envelope body 21. , 22b are formed. As shown in FIG. 18, such an envelope is cut by punching out four corners (hatched portions) of a predetermined sheet of paper, and is folded and folded back.
It is manufactured by gluing b. [0003] As an apparatus for manufacturing such envelopes,
A continuous production apparatus for envelopes and the like described in JP-A-7-144378 is known. This continuous manufacturing apparatus forms a fold in the continuous material, cuts the required material, applies an adhesive, folds the side surface to form a tube-shaped strip material, cuts and folds the bottom cover. Manufacture envelopes. According to this apparatus, it is possible to continuously manufacture a plurality of envelopes as shown in FIG. 17 using roll paper or the like. [0004] However, in this apparatus, since the side surface of the continuous material is folded to form a tube-shaped strip-shaped material, only one envelope can be manufactured by a series of steps. In order to manufacture a plurality of envelopes at one time, a plurality of devices must be prepared. FIG.
In the case of manufacturing the envelope shown in FIG. 7, since four corners of the sheet are punched as shown in FIG. 18, an extra area and process are required for the punching margin. [0005] Therefore, in the present invention, to minimize waste and process materials, providing bag manufacturing equipment which can manufacture bag such as a plurality of envelopes at a time. [0006] A bag manufacturing apparatus of the present invention is a bag manufacturing apparatus for manufacturing a bag while conveying a sheet material. Gluing means for gluing a plurality of rows to the surface, an introduction path for introducing a part of the glued sheet material, and folding means for holding and pulling in the middle of the sheet material introduced to the introduction path. And pressing means for pressing the glued portion of the drawn sheet material, and cutting means for cutting the sheet material into a plurality of pieces along the glued portion of the pressed sheet material. [0007] The sheet material is folded by sandwiching and pulling in the middle of the sheet material that has been glued in a plurality of rows, and the glued portion of the sheet material is pressed and divided into a plurality of pieces along this glued portion. Thereby, a plurality of bags can be manufactured at once from one sheet-shaped material. At this time, since it is not necessary to cut in advance in accordance with the shape of each bag for manufacturing the sheet material, waste of the material can be minimized. The gluing means can be constituted by a nozzle for discharging glue or the like, but is desirably constituted by a gluing roller rotatable in the conveying direction of the sheet material. By applying a glue roller rotatable in the transport direction of the sheet material to the sheet material to be conveyed, the glue applied on the glue roller is transferred onto the sheet material to be applied. It is possible to perform band-like gluing of rows. At this time, even if the sheet material is conveyed at a high speed, the rotation of the gluing roller follows the conveyed sheet material, so that the sheet material can be securely glued. The gluing means comprises: a gluing roller which rotates in contact with the lower surface of the sheet material to be conveyed; a means for urging the sheet material to be conveyed to the gluing roller; It is desirable to provide a gluing apparatus having a tank for immersing the lower part of the roller and means for circulating the paste in the tank while maintaining the paste at a predetermined height. Thereby, the sheet material to be conveyed can be glued by dipping the lower part in a tank storing the glue and contacting the rotating gluing roller. At this time, since the glue in the tank is circulating, it is prevented from hardening. In the bag manufacturing apparatus of the present invention,
Since the bag is manufactured by pulling in the middle part of the sheet-like material and folding it, it is sufficient to glue only one of the surfaces to be folded and joined. Therefore, it is desirable to provide a detecting means for detecting the passage of the sheet material in order to start and end the pasting of the sheet material by the gluing means. This makes it possible to adhere the required amount of glue while the sheet-like material is partially introduced into the introduction path, thereby minimizing the amount of glue used. Furthermore, by preventing glue from adhering to the portion introduced into the introduction path of the sheet material, the sheet material does not adhere to the introduction path, and the sheet material can be smoothly advanced to the next process. it can. The pressing means for pressing the glued portion of the folded sheet material preferably has a heating means for heating the glued portion of the sheet material. By heating the glued portion, it is possible to quickly and firmly fix the glued portion pressed, and to prevent the sheet-shaped material from shifting or peeling off at the glued portion when dividing into multiple pieces along the glued portion. be able to. In the bag manufacturing apparatus of the present invention, it is desirable that the cutting means and the heating means are constituted by a pair of rollers arranged opposite to each other. If the cutting process and the heating process of the folded sheet material are performed by a pair of rollers arranged opposite to each other, the glued portion of the sheet material can be reliably cut without shifting, and the quality of the product can be improved. it can. Further, the bag manufacturing apparatus of the present invention can be reduced in size by the pair of rollers arranged opposite to each other. Further, the bag manufacturing method of the present invention is a bag manufacturing method for manufacturing a bag while conveying a sheet material, wherein a part of the conveyed sheet material is introduced into an introduction path. Detects the passage of the sheet material, controls the start and end of gluing of multiple rows on the sheet material based on this detection, and clamps the middle part of the sheet material that has been introduced into the introduction path and glued. Then, the sheet material is folded by being pulled in, and the glued portions of the sheet material are pressed against each other. Thus, a required amount of glue is adhered to a plurality of rows while the sheet-like material is being introduced into the transport path, and the sheet-like material glued to the plurality of rows is sandwiched and pulled in. The sheet material is folded, and the glued portions of the sheet material are pressed against each other to obtain a sheet material in a state where bags are connected in a plurality of rows. Thereafter, if the sheet material is cut into a plurality of pieces along the glued portion, a plurality of bags can be manufactured at one time. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIGS. 1 to 4 are explanatory views showing an envelope manufacturing process by an envelope manufacturing apparatus according to a first embodiment of the present invention, and FIGS. Explanatory drawing which shows the process until the envelope as a bag is manufactured from a sheet material by the envelope manufacturing apparatus in the first embodiment of the invention,
FIG. 9 is a side view showing a partial cross section of the gluing device according to the first embodiment of the present invention, and FIG. 10 is a front view thereof. In FIG. 1, an envelope manufacturing apparatus according to a first embodiment of the present invention includes a gluing device 1 as a gluing means for gluing an upper surface of a sheet material S supplied by a conveyor device C, and a sheet material S. Rollers 2a, 2b, 2c, 2d for nipping and conveying, and an introduction path 3 for introducing a part of the sheet material S nipped by the rollers 2a, 2b
And a slitter 4 as cutting means for cutting the sheet material S held and conveyed by the rollers 2c and 2d into a plurality of pieces.
And a heating press roller 5 which presses the sheet material S against the slitter 4 while heating the sheet material S. In the middle of the introduction path 3, there is provided a first sensor 6a as a detecting means for detecting the leading end of the sheet material S for detecting the passage of the sheet material S. A second sensor 6b as a detecting means for detecting the trailing end of the sheet material S for detecting the passage of the sheet material S is also provided behind the gluing device 1 in the conveying direction of the sheet material S. Prepare. These first sensor 6a and second sensor 6b
By detecting the leading end and the trailing end of the sheet material S, the passage of the sheet material S is detected, and based on this, the start and the end of the gluing to the sheet material S by the gluing device 1 are controlled. When the leading end of the sheet material S introduced into the introduction path 3 is detected by the glue start sensor 6a (FIG. 2)
), The application of the glue P to the upper surface of the sheet material S by the gluing device 1 is started. Further, when the rear end of the sheet material S is detected by the second sensor 6b, the gluing device 1 ends the application of the glue. The gluing timing by the gluing device 1 is determined by the first sensor 6a and the second sensor 6a.
It can be adjusted by changing the mounting position of b. As shown in FIGS. 9 and 10, the gluing apparatus 1 includes a mounting frame 10 for mounting to the main body frame F of the envelope manufacturing apparatus, a disk-shaped gluing roller 11 rotatable in the conveying direction of the sheet material S, Glue roller 1
1, a glue chamber 12 for adhering glue P, and an air cylinder 13 for raising and lowering the glue roller 11
And is fixed to the envelope manufacturing apparatus main body frame F by the mounting frame 10 and the mounting screws 14. On both sides of the glue chamber 12, a glue inlet 12a for supplying the glue P into the glue chamber 12 is provided.
The glue P is supplied from a hose 12b connected to the hose. The disc-shaped gluing roller 11 moves up and down by supplying and discharging air from an air compressor (not shown) connected to the air cylinder 13. When the gluing roller 11 is lowered, a gap 1 is formed between the gluing roller 11 and the inner wall of the glue chamber 12.
2c is formed, and the glue P is supplied from the gap 12c onto the rotating gluing roller 11 and adheres thereto. On the other hand, in a state where the gluing roller 11 is lifted and is at the uppermost position, the gap 12c between the gluing roller 11 and the inner wall of the glue chamber 12 is
The glue P is closed by the glue roller 11 and
Does not leak to the outside. Glue chamber 1 when glue roller 11 is lowered
The size of the gap 12c with the inner wall 2 can be adjusted by changing the initial position of the gluing roller 11 with the height adjusting screw 15. By adjusting the size of the gap 12c, the amount of glue P applied to the glue roller 11 is adjusted, and the amount of glue P applied to the sheet material S can be adjusted. The disk-shaped gluing roller 1
As for 1, one or more (two in the illustrated example) are provided in parallel as desired. A plurality of gluing apparatuses 1 having the above-described configuration are provided in a line in a direction perpendicular to the conveying direction of the sheet material S (see FIG. 5). The outermost gluing device 1 has only one gluing roller 11, and the inner gluing device 1 has a sheet-like material S (not shown) as shown in FIG.
And two gluing rollers 11 are provided in parallel in a direction perpendicular to the transport direction. The sheet material S is moved from the first sensor 6a to the second
During the passage to the sensor 6b, that is, after the leading end of the sheet material S is detected by the first sensor 6a, the sheet material S
Until the rear end of the sheet-like material S is detected by the second sensor 6b, the gluing roller 11 is lowered to make contact with the upper surface of the sheet material S. As a result, the paste P adhered on the paste roller 11
Is applied to the upper surface of the sheet material S, and a band-shaped glue is formed on the upper surface of the sheet material S in the transport direction of the sheet material S. At this time, the gluing rollers 1 of the plurality of gluing devices 1
By simultaneously applying the paste P from 1, a plurality of rows of band-shaped paste are applied to the upper surface of the sheet material S. The rollers 2a and 2b hold the sheet material S glued by the gluing device 1 and introduce the sheet material S into the introduction path 3.
Is to be introduced. However, the roller 2a is provided with irregularities so that the portion where the paste P is not adhered can be sandwiched without touching the pasted portion of the sheet material S. The introduction path 3 is provided with a stopper 3a so as to come into contact when the sheet material S is introduced halfway. The sheet-like material S introduced into the introduction path 3 by the rollers 2a and 2b is further conveyed by the rollers 2a and 2b even after coming into contact with the stopper 3a, and is transported below the introduction path 3 toward the space between the rollers 2b and 2c. It begins to flex (see FIG. 3). The bent portion in the middle of the sheet material S is the roller 2
b, 2c, the rollers 2b, 2c
2c, the sheet material S is conveyed in a folded state (see FIG. 4). As shown in FIG. 6, when the sheet material S is folded and turned into an envelope, the stopper 3a and the roller 2 are held by the rollers 2b and 2c at the bottom portion B of the envelope so as to be pulled in.
The arrangement of b and 2c is set. [0028] The folded sheet material S is
By being nipped and conveyed by b, 2c and rollers 2c, 2d, the glued portions are pressed against each other. As shown in FIG. 6, the glue P is glued to only one of the folded surfaces of the sheet material S such that the first glue is glued.
The positions of the sensor 6a and the second sensor 6b and the application timing of the glue P by the gluing device 1 are controlled so that the glue P is adhered to a necessary minimum amount. That is, the glue P
Is glued to the upper part from the bottom part B of the envelope E on one side of the sheet material S. The slitter 4 sandwiches and presses the sheet-like material S together with the heat-pressing roller 5 and, as shown in FIG. 7, a cut line substantially parallel to the glue P glued to the band-like shape of the pressed sheet-like material S. This is a roller-shaped cutter for cutting along L. The slitter 4 divides the sheet material S into a plurality of pieces and, at the same time, cuts out unnecessary portions of the glued portions. The heating press roller 5 presses the sheet material S against the slitter 4 while heating the sheet material S, thereby cutting the glued portion of the sheet material S by the slitter 4 and heating the sheet material S at the same time. As a result, the pressed glued portion is quickly and firmly fixed, and when the slitting is performed by the slitter 4, the sheet material S is prevented from being shifted or peeled off at the glued portion. Next, a process of manufacturing an envelope by the envelope manufacturing apparatus having the above configuration will be described. As shown in FIG. 1, the sheet material S supplied by the conveyor device C is conveyed into the introduction path 3 while being sandwiched by rollers 2a and 2b. As shown in FIG. 2, when the leading end of the sheet material S is detected by the first sensor 6a, the gluing device 1 starts applying the paste P to the upper surface of the sheet material S. The gluing start position on the sheet material S is the bottom portion B of the envelope E to be manufactured (see FIG. 8). As shown in FIG. 3, the sheet material S is further conveyed, and the rear end of the sheet material S is moved to the second sensor 6b.
Is detected, the gluing by the gluing device 1 ends.
After that, the leading end of the sheet material S comes into contact with the stopper 3,
When the sheet material S is further transported by the rollers 2a and 2b, the sheet material S
It starts to bend between b and 2c. When the bent portion in the middle of the sheet material S reaches the rollers 2b and 2c and is nipped by the rollers 2b and 2c, the sheet material S is drawn as it is below the rollers 2b and 2c. S is in a state of being folded at the bottom portion B. Further, the folded sheet-shaped material S is conveyed while being nipped by the rollers 2b and 2c and the rollers 2c and 2d, so that the glued portions thereof are pressed. After that, the sheet material S is pressed and heated and divided by the slitter 4 and the heating press roller 5 to complete the envelope E as shown in FIG. (Embodiment 2) FIGS. 11 to 14 are explanatory views showing an envelope manufacturing process by an envelope manufacturing apparatus according to a second embodiment of the present invention, and FIG. 15 is a view showing a gluing apparatus according to the second embodiment of the present invention. FIG. 16 is a side view showing a partial cross section, and FIG.
FIG. 5 is a view taken along line AA of FIG. 5. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. 11, the envelope manufacturing apparatus according to the second embodiment of the present invention includes a gluing device 7 as a gluing means for gluing the lower surface of the sheet material S supplied by the conveyor device C. The road 3 is divided into rollers 2a and 2
The sheet-shaped material S sandwiched by c is placed below so as to introduce a part thereof. As shown in FIGS. 15 and 16, the gluing device 7 is a sheet-like material S conveyed on a plate 16.
A gluing roller 17 for gluing the lower surface of a (not shown), a glue tank 18 for immersing a lower portion of the gluing roller 17 to supply the glue P.
And an air nozzle 17a for urging the sheet material S against the gluing roller 17 by blowing compressed air against the sheet material S conveyed on the plate 16
Etc. are provided. The gluing roller 17 is provided so as to partially protrude from the upper surface of the plate 16 on which the sheet material S is conveyed. On the lower surface of the glue tank 18, the glue P
A glue supply port 19a for supplying the glue, a glue height adjusting port 19b for discharging the glue P overflowing so that the glue P in the glue tank 18 can be maintained at a predetermined height, and a glue P for cleaning the glue tank 18. A glue discharge port 19c for discharging is provided. Glue supply port 19a and glue height adjustment port 19b
Is connected to a glue supply tank (not shown), and the glue P in the glue supply tank sucked up by a pump device (not shown) is supplied into the glue tank 18 from a glue supply port 19a. The paste P in the paste tank 18 is discharged from the paste height adjusting port 19b at a predetermined height or more, and returned into the paste supply tank. That is, the paste P in the paste tank 18 circulates between the paste supply tank and the paste tank 18 while being maintained at a predetermined height. The glue P stored in the glue tank 18 as described above
Is adhered to the rotating glue roller 17 and is scooped up, and is transferred to the lower surface of the sheet material S. At this time, in order to adjust the amount of the glue P transferred to the lower surface of the sheet material S, the gluing roller 17 is provided with a glue amount adjusting plate 20a.
The glue amount adjusting plate 20a allows the gap between the glue roller 17 and the glue roller 17 to be adjusted by the adjustment bolt 20b, and scrapes off excess glue P attached to the glue roller 17. In the above configuration, as shown in FIG. 11, the sheet material S supplied by the conveyor device C is urged toward the gluing roller 17 by compressed air blown from an air nozzle 17a when passing over the plate 16. It is pushed. At this time, the glue P supplied from the glue tank 18 adheres to the glue roller 17, and the glue P on the glue roller 17 is transferred to the lower surface of the sheet material S. The envelope manufacturing apparatus according to the second embodiment is not provided with a detecting means for detecting the sheet material S. Therefore, the gluing device 7 operates even when the sheet material S is not on the plate 16, but the gluing roller 17 only keeps rotating by dipping the lower part in the glue P in the glue tank 18. Glue P on top is the glue tank 1
8, it is not necessary to control the application timing of the paste P as in the example of the first embodiment. Then, the sheet material S is formed by the rollers 2a,
12, and further, as shown in FIG. 12, sandwiched by rollers 2 b and 2 c and transported into the lower introduction path 3. When the leading end of the sheet material S comes into contact with the stopper 3 and the sheet material S is further conveyed by the rollers 2b and 2c, the sheet material S is moved above the introduction path 3 between the rollers 2c and 2d as shown in FIG. Begins to flex towards. When the bent portion of the sheet material S reaches the rollers 2c and 2d and is nipped by the rollers 2c and 2d, as shown in FIG. 14, the sheet material S is left as it is on the left of the rollers 2c and 2d. The sheet material S is folded at the bottom portion B and the glued portion is pressed.
Thereafter, the envelope E is completed through the same steps as in the first embodiment. According to the envelope manufacturing apparatus of the second embodiment, the lower portion of the sheet material S to be conveyed is continuously immersed in the glue tank 18 in which the glue P is stored and is brought into contact with the rotating glue roller 17 to rotate. Since the first and second sensors 6a and 6a are glued to the first and second sensors 6a and 6a as in the envelope manufacturing apparatus according to the first embodiment.
It is possible to perform the gluing process at a higher speed as compared with the one that controls the timing of the gluing by the gluing device 1 with b. As a result, it is possible to increase the conveying speed of the sheet material S and to manufacture a large amount of envelopes E in a shorter time. Further, since the glue P in the glue tank 18 is circulated, the glue P is prevented from hardening, and the quality of the glue P supplied to the sheet material S is kept constant.
It is possible to perform more accurate gluing. Further, the inside of the glue tank 18 can be cleaned by connecting and circulating a water supply tank (not shown) to the glue supply port 19a and the glue height adjusting port 19b. Further, the cleaning operation can be automated by a configuration in which the glue supply tank and the water supply tank are alternately connected to the glue supply port 19a and the glue height adjusting port 19b by timer control or the like. According to the present invention, the following effects can be obtained. (1) A plurality of rows of glue are applied to one surface of the sheet material, a part of the glued sheet material is introduced into the introduction path, and an intermediate portion of the introduced sheet material is pinched. By pressing and gluing the glued part of the drawn-in sheet material and dividing it into multiple pieces along the glued part of the pressed sheet material, multiple bags can be manufactured at once from one sheet material It is possible to do.
At this time, since it is not necessary to cut in advance in accordance with the shape of each bag for manufacturing the sheet material, waste of the material can be minimized. (2) Since the gluing means is constituted by a gluing roller rotatable in the conveying direction of the sheet material, the glue adhered on the gluing roller is transferred to the sheet material and applied. A plurality of rows of band-shaped gluing can be performed, and even if the sheet-shaped material is conveyed at a high speed, the rotation of the gluing roller follows the conveyed sheet-shaped material, so that the gluing is reliably performed on the sheet-shaped material. It can be carried out. (3) By providing a detecting means for detecting the passage of the sheet material in order to start and end the pasting of the sheet material by the pasting means, the sheet material is partially introduced into the introduction path. The required amount of glue can be attached, and the amount of glue used can be minimized. Furthermore, by preventing glue from adhering to the portion introduced into the introduction path of the sheet material, the sheet material does not adhere to the introduction path, and the sheet material can be smoothly advanced to the next process. it can. (4) By providing a heating means for heating the glued portion of the sheet-like material, it is possible to quickly and firmly fix the pressed glued portion by heating the glued portion. When the sheet material is divided into a plurality of pieces, it is possible to prevent the sheet-like material from shifting or peeling off at the glued portion. (5) By forming the cutting means and the heating means with a pair of rollers arranged opposite to each other, it is possible to cut the glued portion of the sheet-shaped material without displacement, thereby improving the quality of the product. Can be done. Further, the bag manufacturing apparatus of the present invention can be reduced in size by the pair of rollers arranged opposite to each other. (6) A glue roller that rotates in contact with the lower surface of the sheet material to be conveyed, means for urging the sheet material to be conveyed against the glue roller, According to the sizing device provided with a immersion tank and a means for circulating the paste in the tank at a predetermined height, the sizing process is performed at a higher speed, the conveying speed of the sheet material is increased, and the It is possible to produce a large number of bags in time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing an envelope manufacturing process by an envelope manufacturing apparatus according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram illustrating an envelope manufacturing process by the envelope manufacturing apparatus according to the first embodiment of the present invention. FIG. 3 is an explanatory diagram illustrating an envelope manufacturing process by the envelope manufacturing apparatus according to the first embodiment of the present invention. FIG. 4 is an explanatory diagram illustrating an envelope manufacturing process by the envelope manufacturing apparatus according to the first embodiment of the present invention. FIG. 5 is a diagram illustrating a step of gluing a sheet-like material by the envelope manufacturing apparatus according to the first embodiment of the present invention. FIG. 6 is a diagram illustrating a step of folding the sheet material by the envelope manufacturing apparatus according to the first embodiment of the present invention. FIG. 7 is a diagram illustrating a process of separating the sheet material by the envelope manufacturing apparatus according to the first embodiment of the present invention. FIG. 8 is a diagram illustrating an envelope manufactured by the envelope manufacturing apparatus according to the first embodiment of the present invention. FIG. 9 is a side view showing a partial cross section of the gluing device according to the first embodiment of the present invention. 10 is a front view of the gluing device shown in FIG. FIG. 11 is an explanatory diagram illustrating an envelope manufacturing process by an envelope manufacturing apparatus according to a second embodiment of the present invention. FIG. 12 is an explanatory diagram illustrating an envelope manufacturing process by an envelope manufacturing apparatus according to a second embodiment of the present invention. FIG. 13 is an explanatory diagram showing an envelope manufacturing process by the envelope manufacturing device according to the second embodiment of the present invention. FIG. 14 is an explanatory diagram showing an envelope manufacturing process by an envelope manufacturing apparatus according to a second embodiment of the present invention. FIG. 15 is a side view showing a partial cross section of a gluing device according to a second embodiment of the present invention. FIG. 16 is a view taken along line AA of FIG. 15; FIG. 17 is a rear view showing an example of a conventional envelope. 18 is a plan view showing a state of cutting the envelope shown in FIG. 17; DESCRIPTION OF SYMBOLS 1, 7 Gluing devices 2a, 2b, 2c, 2d Roller 3 Introductory path 3a Stopper 4 Slitter 5 Heat holding roller 6a First sensor 6b Second sensor 10 Mounting frame 11 Glue roller 12 Glue chamber 12a Glue inlet 12b Hose 13 Air cylinder 14 Mounting screw 15 Height adjustment screw 16 Plate 17 Gluing roller 17a Air nozzle 18 Glue tank 19a Glue supply port 19b Glue height adjustment port 19c Glue discharge port 20a Glue amount adjustment plate 20b Adjustment bolt C Conveyor device S Sheet material P Glue L Cut line E Envelope B Bottom

Continuation of the front page (56) References JP-A-57-133047 (JP, A) JP-A-7-1890 (JP, A) JP-A-10-35156 (JP, A) JP-A-4-222657 (JP) JP-A-10-156972 (JP, A) JP-A-52-128414 (JP, U) U.S. Pat. No. 1,741,382 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B31B 1/00-49/04 B31C 1/00-13/00 B31D 1/00-5/04 B05C 1/00-3/20

Claims (1)

(57) [Claim 1] A bag manufacturing apparatus for manufacturing a bag while transporting one sheet-like material, wherein the bag-forming device is configured to apply one surface of the sheet-like material to be transported. Gluing means for performing gluing of a plurality of rows, an introduction path for introducing a part of the glued sheet material, folding means for holding and pulling in the middle of the sheet material introduced to the introduction path, A pressing means for pressing the glued portion of the drawn-in sheet material; and a cutting means for cutting the glued portion of the sheet material into a plurality of pieces along the glued portion of the pressed sheet material. A plate to be conveyed and gluing that is provided so as to partially protrude from the upper surface of the plate, rotates in contact with the lower surface of the sheet material to be conveyed, and glues a plurality of rows of band-shaped glues to the sheet material to be conveyed. roller ,
An air nozzle that urges the sheet-like material conveyed to the upper surface of the plate by blowing compressed air against the gluing roller, and a glue tank that collects glue and immerses a lower portion of the gluing roller is provided. Bag manufacturing equipment.