JPH02243291A - Cutting method for cylindrical film and cutting device, and cylindrical container manufacturing device making use of the same cutting device - Google Patents

Abstract

PURPOSE:To facilitate processing of the inner surface of the open section of a cylindrical film, and inserting of a member by forming a barrel shaped film in a blocking condition into a cylindrical shape by blowing air inside from its end section, holding it along the direction perpendicular to a flat surface including said blocking, and thereby cutting the section of the film at a position close to the hold section. CONSTITUTION:A chuck member 31 is inserted into the opening at the end section of a barrel shaped film 2A drawn out of a raw fabric 1 which is winded while being laminated in a flat shape, so that the end section of the barrel shaped film 2A is thereby locked onto the chuck member 31. Then, the barrel shaped film 2A is pulled out by a specified amount with the chuck member 31 moved, air is thereby blown into the barrel shaped film through an air nozzle 39 so that the barrel shaped film 2A in a specified range is formed into a cylindrical shape. The barrel shaped film formed into a cylindrical shape as described above is held by clampers 32 at a specified position along the direction perpendicular to the flat surface formed when pulled out so that the barrel shaped film is cut off at a position close to the hold section in co-operation with a cutting edge body 33B and a backing edge body 33A.

Description

Detailed Description of the Invention: Industrial Field of Application The present invention is directed to cutting a cylindrical film unwound from a flat film laminated and wound so that the opening of the cylindrical film is open. The present invention relates to a method and device for cutting a cylindrical film that allows easy processing of openings in a cylindrical film, and a bag-like container manufacturing device using the cutting device.

BACKGROUND OF THE INVENTION Conventionally, a bag-like container with a spout for containing medicinal solutions or beverages has been made by, for example, two tape-like films 201A made from a roll-shaped raw material, as shown in FIG.

201B is fed out and cut into a predetermined length, and the spout member 202 is sandwiched between the two films 201A and 2018, and the spout member 202 and the film 201A.

It is manufactured by thermally welding the peripheral portion of 201B to 203L. However, the use of two tape-shaped films 201A and 201B increases the cost significantly, and also requires thermal welding 20
There are disadvantages in that there are many three parts, and the reliability is low, and the roughness is also small.

Therefore, it is conceivable to manufacture the bag using a cylindrical film used for bag making.

Problem to be Solved by the Invention Q: The cylindrical film is manufactured as a raw film wound in 8ii layers, and the cylindrical film unwound from this raw film is as shown in Fig. 11. The inner surface is in close contact with the inner surface, creating a flat blocking state. In order to cut the cylindrical film 2A in the blocking state and process the inside of the cut opening of the cylindrical film 2A, or insert a plug member, etc.,
Blocking must be resolved. Therefore, it is conceivable to use a method of forcibly opening it mechanically using a claw or the like, or to use a cylindrical film having unevenness or grooves on the inner surface to prevent blocking. However, mechanical methods damage the cylindrical film and are difficult to stably open the openings. In addition, when unevenness or grooves are formed to prevent blocking, there are problems such as extremely reduced transparency, lowered commercial value, and increased raw material cost.

The present invention solves the above-mentioned problems, and makes it possible to continuously cut the cylindrical film unrolled from the original film into a predetermined length, and also to release the cutting opening of the cut cylindrical film from the blocking state. It is an object of the present invention to provide a method and device for cutting a cylindrical film that can easily process the inner surface of the cutting opening and insert a member in the cutting process, and a bag-shaped container manufacturing device using the cutting device.

Means for Solving the Problems In order to solve the above problems, the cutting method of the present invention involves inserting a chuck member into the end opening of a cylindrical film that is unwound from a flat AWI-wound original film. The end of the cylindrical film is locked to a chuck member, and the chuck member is moved to pull out a predetermined amount of the cylindrical film. is formed into a cylindrical shape, a predetermined part of the cylindrical film is held in a direction perpendicular to the flat plane when it is fed out, and the cylindrical film is cut near the holding part. It was designed to do so.

In addition, the cutting device is provided with a plurality of circular holding rollers that support the outer circumferential surface of the cylindrical film when it is in a cylindrical shape, in a film drawing path that unwinds the cylindrical film from the original film that has been laminated and wound in a flat shape. A chuck member that can be inserted into the end opening of the cylindrical film is provided at the rear, and a chuck claw that can lock the end of the cylindrical film is provided on the chuck member, and air is blown into the cylindrical film. A chuck moving device is provided, which includes an air nozzle, moves the chuck member along the film pull-out path, and pulls out a predetermined amount of the cylindrical film; A clamping device having a pair of clamping surfaces along a direction perpendicular to is provided, and a means for cutting the cylindrical film is provided near the clamping device.

Furthermore, the bag-like container manufacturing apparatus of the present invention includes the tubular film cutting device according to claim 2, and a plug member inserted into the cutting opening of the cut tubular film to cut the plug member into a tube. A first welding device 8N that welds the opening of the cylindrical film, and a welding section cooling device that cools the seal welded by the welding device. ! ] device;
a trimming device that cuts off an unnecessary portion of the seal portion; a first conveying device that fits onto the cylindrical film cut by the cylindrical film cutting device to maintain the cylindrical shape and conveys the cylindrical film to a first melting tube device; the first Wi party device, the second Wi party device,
The present invention includes a 21st transport device that transports the cylindrical film between the welded part cooling device and the trimming device.

Effect: According to the cutting method described above, the cylindrical film formed into a cylindrical shape by blowing air into the interior is cut while being held in a direction perpendicular to the oblique plane that tends to block, so the cut cylindrical film is released. This makes it possible to easily process the inner surface of the cutting opening and insert members. Moreover, the cut end of the cylindrical film on the original side is also open,
The next chuck member can be easily inserted.

Waves According to the cutting device described above, the cylindrical film on the original fabric side is formed into a cylindrical shape by air from the air nozzle, and the outer peripheral surface of the film is supported by the circular holding roller, so that the cylindrical shape can be maintained even after cutting. The chuck member can be inserted reliably and a continuous cylindrical film can be drawn out.

Furthermore, according to the bag-like container manufacturing apparatus, bag-like containers in which a plug member is inserted and welded to the cut opening can be continuously manufactured using an inexpensive cylindrical film.

EXAMPLE Hereinafter, an example of the bag-like container manufacturing apparatus according to the present invention will be described with reference to FIGS. 1 to 11.

This manufacturing device, as shown in FIGS. 2(a) to (f),
The cylindrical film 2A laminated and wound into a flat shape is fed out and cut into a predetermined length, and the boat members (spout members) 4A and 4B are inserted into the cut opening and welded, and the shoulder at the cutting opening is heated. By welding (sealing 2a), a bag-like container 2C@- for holding a medicinal solution, a drink, etc. as shown in FIG. 2(f) is manufactured. As shown in FIGS. 1 and 3, this manufacturing apparatus includes a film cutting process A, which is equipped with a film cutting device 3 that cuts a cylindrical film 2A fed out from a raw film 1 into a predetermined length, and a cutting process. A boat welding process B in which a 12th W applicator 5 is provided to insert the boat members 4A and 4B into both cut openings of the cylindrical film 2B and thermally weld them, and a blanking process C provided for design reasons. A shoulder sealing process in which a second welding device 6 is provided to form a bag-like container 2G by heating both cut openings of the cylindrical film 2B with F8M, and a sealing portion by the first and second welding devices 5.6. 2a, a similder cooling process E including a welded part cooling device 7 for cooling the welded part 2a;
The process includes a trimming process F in which a trimming device 8 is provided to cut off unnecessary parts of the seal portion 2a, and a carry-out process G in which the trimmed bag-shaped container 2C is carried out, from the film cutting process A to the boat welding process B. The first film is fitted onto the cut cylindrical film 2B and transported while maintaining the cylindrical shape.
Conveying device 9 and boat 11 Arrival process B1 Blank process C1
Between each process of similder sealing process D1, shoulder cooling process E, trimming process F, and carrying out process G,
A second #l transport device 10 for transporting the bag-shaped container 2G> is provided.

First, after cutting the film in film cutting process A @
3 will be explained.

As shown in FIGS. 1 and 4, this film cutting device 3
These are a film feeding section 21 that feeds out the cylindrical film 2A from the original fabric 1, and a guide section 22 that guides the cylindrical film 2A.
and a cutting section 23 that pulls out and cuts the cylindrical film 2A by a predetermined length.

In the film feeding section 21, the cylindrical film 2A is led out from the original film 1 by being guided by a plurality of feeding rollers 24, a driving roller 25, and a step roller 26 along a flat plane. The film pull-out path 27 in the guide section 22 has the lines shown in FIG.
As shown in FIGS. 2(a) and 2(b), a pair of flattening rollers 28 are horizontally disposed at upper and lower positions along the flattened surface of the cylindrical film 2A. In addition, the extraction path 27 at the rear
There are two cylindrical holding rollers 29 consisting of a pair of upper and lower horizontal drum-shaped rollers 29a and a pair of left and right vertical drum-shaped rollers 29b.
1, and as shown in FIG. 5, when the cylindrical film 2A is formed into a cylindrical shape, the outer peripheral surface is guided and the cylindrical shape is maintained;
It does not return to its flat shape as shown by the imaginary line.

The cutting section 23 is provided with a cutter 30 equipped with a clamping device and a chuck member 31 that pulls out a predetermined amount of the cylindrical film 2A to form a cylindrical shape. As shown in FIG. 2(b), this cutter 30 with a clamp device includes a pair of left and right clampers 32 each having a vertical clamp surface 32a orthogonal to the flat surface of the cylindrical film 2A held by the flat holding roller 28. .32 are arranged so as to be able to approach and separate from each other by driving means (not shown), and a receiving blade body 33A and a cutting blade body 333 are arranged at the rear of the clampers 32 and 32 so as to be movable in the left-right direction. Then, as shown by the imaginary line in FIG. 2(b), the cylindrical film 2A clamped by the clampers 32, 32 is moved to the cutting blade 33 by the cutting cylinder 34.
Move B and cut at a predetermined position. As shown in FIGS. 7 and 8, the chuck member 31 has a conical insert 37 that can be inserted into the cutting opening of the cylindrical film 2A at the center of the chuck body 36 that is fitted into the outer WU 35. The insert body 37 is provided with an air nozzle hole 39 that communicates with the air supply hole 38 of the chuck body 36 and opens at the tip of the insert body 37 . In addition, the chuck body 36
Four grooves 40 are formed in the front and back direction at regular intervals on the outer periphery, and within these grooves 40 are disposed chuck claws 42 whose intermediate portions are swingably supported via bins 41 in the tangential direction. will be established. A pressing member 43 is attached to the distal end of these chuck claws 42 to press and hold the end of the cylindrical film 2B to the outer peripheral surface of the base end of the insert body 37.
A cam follower 44 is attached to the base end of 2. An opening/closing cam 46 with which the cam follower 44 comes into sliding contact is attached to an operating rod 45a of a cylinder 45 for opening/closing the jaws at the rear of the chuck body 36, and the chuck jaws 42 are moved by a biasing means (not shown) such as a coil spring. The cam follower 44 is urged in the U number direction where it comes into contact with the cam surface 46a of the opening/closing cam 46. Therefore, the claw opening/closing cylinder 4
5 to move the opening/closing cam 46 in the front-back direction, the cam follower 44 follows the cam surface 46a, the chuck claw 42 swings, and the cylindrical film 2A externally fitted on the insert body 37 is moved. The ends can be clamped. 4
7 is a lid body that closes the rear part of the outer cylinder 35. This chuck member 31 is connected to an operating rod 49a of a drawer cylinder 49 via a support member 48, as shown in FIG.
The clamp 4i1f is configured to reciprocate by a predetermined stroke from the position of the force vine 30 along the film pull-out path 27.

As shown in FIGS. 1 and 9, the first conveyance device 9 is mounted on a movable base 52 that is guided by a guide rail 51 and is movable.
A pair of left and right columns 53 are installed in two sets at front and rear positions, and rotatable holding arms 55 are respectively attached to the upper parts of both branches 53 via horizontal bins 54 in the front and rear direction. The distal ends of these holding arms 55 are formed with semicircular recesses 5G forming circular holes in which the left and right holding arms 55 can hold the cylindrical film 2B, and the inner surfaces of the proximal ends of the holding arms 55 are formed with semicircular recesses 5G. are each formed with a fan-shaped gear 57 centered on the horizontal bin 54, and between the base ends of the holding arm 55, a rack member 58 having a rack 58a that meshes with each fan-shaped gear 57 is arranged so as to be movable up and down. be done. This rack member 58 is connected to an operating rod 59a of an arm opening/closing cylinder 59 disposed on a movable base 52, and is raised and lowered, and the holding arm 55
The cut cylindrical film 2 is
B can be maintained in a cylindrical state. Moreover, the operating rod 60a of the first conveying cylinder 60 is connected to the movable base 52, and is capable of reciprocating between the film cutting section @3 and the first welding device [5].

The first welding device 5 in the boat welding step 6 includes a first
As shown in FIG. 2(C), there is a parts feeder 61 that supplies the synthetic resin boat members 4A and 4B, and a parts feeder 61 that supplies the boat members 4A and 4B to 111! A dispensing device (not shown) that takes out one by one, and a boat member 4A.

A reversing device (not shown) for reversing 4B, boat member 4
It is equipped with an air cleaning device (not shown) for cleaning A and 4B, a holding rod 62 at the opening, a heat block 63A, and a receiving block 63B. And the first conveyance device 9
Insert a pair of left and right holding rods 2.62 into the openings of the cylindrical film 2B that has been fed, and position the cylindrical film 2B with the m parts 62a and 62a provided on these holding rods 2.62. Hold. On the other hand, the boat members 4A and 4B are fed from the parts feeder 61 and fixed at 14! ] are taken out, cleaned with cooling air, and then inserted into the openings of the cylindrical film 2B.

Then, the left and right holding rods 2.62 are separated from each other, and the opening of the cylindrical film 2B is extended and fixed in the left-right direction. Furthermore, Uke ascends the block 63B to support the tubular film 2B from below, and the heat block 63A
is lowered to sandwich and thermally weld the cylindrical film 2B and the boat member 4A or 4B.

The second welding device 6 in the shoulder sealing process includes a positioning device 71 for the cylindrical film 2B, a beat block 71A, and a receiving block 71B, as shown in FIG. 1 and FIG. , 2nd W.J.
The cylindrical film 2B with boat members 4A and 4B sent by the feeding device 9 is gripped by a pair of left and right gripping claws 71a of the positioning device 71, and the positioning cylinder 71b is contracted to move the film 2B forward and backward. Position by pulling. Then, the receiver raises the block 72B to support the shoulder of the cylindrical film 2B from below, and connects it to the heat block. 2A and heat weld the shoulder part of the cylindrical film 2B 2a.
L, configured to form a bag-like container 2C.

As shown in FIG. 1, the welded part cooling device 7 in the shoulder cooling step E includes a positioning device 81, a water cooling block 72A, and a receiving block 72B, and the gripping claws 81a of the positioning device 81 hold both sides of the bag-like container 2C. After gripping the boat members 4A and 4B and positioning the bag-like container 2C by contracting the positioning cylinder 81b, the receiver raises the block 82B to support the shoulder part (seal part 2a) of the bag-like container 2C from below, Lower the water cooling block 72A and seal part 2.
configured to cool a.

In the trimming step F, the trimming device 8 is used for positioning 'I!' as shown in FIGS. 1 and 2(f). t[
91, die 92, punch 93 and punch guide 9
4 and a discharge chute 95-. Then, the gripping claws 91a of the positioning device 91 grip both boat members 4A and 4B of the bag-like container 2C, and the positioning cylinder 91
After positioning by b, the die 92 is raised to support the shoulder of the bag-like film 2C from below, and the punch guide 9
4 is lowered to sandwich the shoulder portion of the bag-like member 2B between it and the die 92, and the punch 93 is driven to punch out an unnecessary portion of the seal portion 2a. The trimming pieces are discharged to the outside of the machine from a discharge chute 95.

In the carrying out process G, as shown in FIG.
6 is arranged.

As shown in FIG.
is arranged, and this feed bar 101 has a
An elevating beam 703 having holding portions 1028 to 102F for the cylindrical film 2B (bag-like container 2C) is disposed at a position corresponding to F so as to be movable up and down. The lifting beam 103 is connected to the operating rod of the lifting cylinder 104 disposed on the feed bar 101, and also connected to the guide shaft 10 of the lifting beam 103.
5 is guided by a guide member 106 and moved up and down, and the holding parts 102B to 102F are equipped with known holding means such as a cylinder device and a chuck. Also, feed bar 101
The operating rod of the first GT feeding cylinder 107 is connected to the cylinder 107, and it is guided by a guide roller 108 and can reciprocate one stroke between each process.

Therefore, from the solid line position in FIG. 10, ascend H → tubular film holding I → outward movement J → release the tubular film → descend →
Return trip! By repeating IJM, the cylindrical film 2B (bag-shaped container 2G) of 8-F can be sequentially conveyed to the next step in each step.

Next, the operation of this bag-like container manufacturing apparatus will be explained.

In the film cutting process A, (1) A cylindrical film 2 is fed out from the original film 1 at the time of startup.
A, while remaining flat, passes through the circular holding roller 29 as shown by the imaginary line in FIG.
pulled out to position. First, the end opening of the blocked tubular film 2A is opened manually, and the insert 37 of the chuck member 31 is inserted and locked by the chuck claw 42. [Figure 2 (a)] (2) Drive roller 2
5, the drawing cylinder 49 is contracted to move the chuck member 31 by a predetermined amount, and the cylindrical film 2A is drawn out.

(3) Clean air is blown into the tubular film 2A from the air nozzle hole 39 of the chuck member 31 for a certain period of time to inflate it into a hollow cylindrical shape from the flat tubular film 21 to the flat holding roller 28 position.

(4) Move the clampers 32 and 32 closer to clamp the cylindrical film 2A in a direction perpendicular to the flat surface of the cylindrical film 2A when the original fabric 1 is exposed, and move the receiving blade 33A in front of the cylindrical film 2A. position (one clamper 32
It may be installed integrally with the ), the cutting cylinder 34 is extended to operate the cutting blade 33B to cut the cylindrical film 2A. (FIG. 2(b)) (5) The holding arm 55 of the first conveying device 9 holds the cut cylindrical film 2B while maintaining its cylindrical shape,
The chuck claw 42 of the chuck member 31 is released and the insert body 3 is removed.
7 is extracted from the cylindrical film 2B, and then transported to the next boat welding process B. .

(6) Move the clamper 32 apart and remove the cylindrical film 2A.
Insert the insert 37 of the chuck member 31 into the cutting opening and repeat the above operations.

At this time, the opening of the cylindrical film 4A is connected to the clamper 32.
．． The cylindrical film 2A is clamped by the clamps 32a and 32a in a direction perpendicular to the flat surface, and air is filled in the cylindrical film 2A between the clampers 32 and 32 and the flattening roller 28, so the clamps are released. However, since the insertion body 37 is not blocked again even if the insertion body 37 is inserted, and is held in a cylindrical shape by the circular holding roller 29, the insertion body 37 can be inserted easily and reliably.

In the boat welding process B, the cylindrical film 2B transported by the first transport device 9 is held and positioned by the four holding rods 62, and the boat members 4A and 4B are inserted into the openings and heated. The block 63A and the receiver heat weld the boat members 4A and 4B to the opening of the cylindrical film 2B using the block 433. [FIG. 2(d)] In the shoulder sealing process, the blanking process C is carried out by the holding parts 102B and 120Q of the second conveying device 10.
The boat members 4A, 4 sent to the second melt viewing device 6 via
The B-attached cylindrical film 2B is positioned by the positioning device 71, and the heat block 72A and the receiver are positioned by the block 7.
2B heats and seals the opening 2a, forming a bag-like container 2C.

[Fig. 2(e)] In the shoulder cooling process E, the bag-shaped container 2 is sent to the welding part cooling bag @7 by the holding part 102D of the second conveying device.
C is positioned by the positioning device 81, and the heat blocks 63A, 72 of the first and second welding devices 5.6 are positioned by the water cooling block 82A and the receiving block 82B.
The sealed portion 2a heated at A is cooled.

In the trimming step F, the bag-shaped container 2C transported to the trimming device W8 by the holding section 102E of the second transport device [10] is positioned by the positioning device 191, and the sealing section 2a is Unnecessary parts are removed.

[FIG. 2(f)] Then, the completed bag-shaped container 2C is transferred to the carrying out process G by the holding part 102F of the 211st gt feeding device 10.
is conveyed onto the discharge conveyor 96.

Effects of the Invention As described above, according to the method of cutting a cylindrical film of the present invention, air is blown from the end of the cylindrical film in a blocking state to form a cylindrical shape, and the flat surface where the blocking tendency is perpendicular is cut. The cut end of the cut cylindrical film is in an open state, and the other end is in an open state by the chuck member. The inner surface of the opening of the cylindrical film can be easily processed and components can be inserted. Further, the cut end of the cylindrical film on the original side is also opened, allowing easy insertion of the chuck member, and continuous withdrawal of the cylindrical film.

Further, according to the cutting device, since the end opening of the cylindrical film on the original side after cutting is held in a cylindrical shape by the circular holding roller, the chuck member can be inserted reliably.

Furthermore, according to the bag-shaped container manufacturing apparatus, by using an inexpensive cylindrical film, the blocking state is released at the time of cutting, a spout member is inserted and S-attached, and the bag-like container with the spout member is continuously attached. It is possible to manufacture bag-like containers at low cost.

4.L of the drawing! 1111 Description FIGS. 1 to 11 show one embodiment of the present invention, FIG. 1 is a perspective view showing each process of the bag-shaped container manufacturing apparatus, and FIG. 2 (a)
~(f) is a perspective view showing the processing state of the cylindrical film, the third
Figure 4 is an overall plan view and side view of the bag-shaped container manufacturing device, Figure 5 is a front view showing the circular holding roller, Figure 6 is an explanatory diagram of the operation of the film cutting device, Figures 7 and 8. are a sectional view and a front view of the chuck member, FIG. 9 is a front view of the first conveyance device, FIG. 10 is a front view of the second conveyance device, and FIG.
Figure 1 is a perspective view showing a cylindrical film in a blocking state;
Figure W#12 is a perspective view of a conventional bag-like container.

1... Raw film, 2A... Tubular film (before cutting), 2
B... Cylindrical film (after cutting), 2C... Bag-shaped container, 3... Film cutting device, 4A, 4B... Boat member (spout member), 5... First melt @ Device, 6...Second melt monitoring device, 7...Welded part cooling device, 8...Trimming device, 9...First! II sending device, 10...second
Conveying device, 28...Flat holding roller, 29...Circular holding roller, 29a...Horizontal drum-shaped roller, 29b...
・Vertical drum-shaped roller, 30...Cutter with clamp device,
31... Chuck member, 32... Clamper, 32
a...Clamp surface, 33A...Blade receiving body, 33B...
- Cutting blade body, 36... Chuck body, 37... Insert body, 39... Air nozzle hole, 42... Chuck claw, 4
9...Cylinder for drawer, 52...Movable base, 55...
・Holding arm, 56... semicircular recess, 60... 1st #
! 2 feeding cylinder, 62...opening holding rod, 62
a...Brim part, 63A...Heat block, 633.
...The receiver is a block, 71...Positioning device, 72A.
...Heat block, 72B...Uke is block, 81
...Positioning device, 82A...Water cooling block 1, 9
2E3...The receiver is a block, 91...Positioning device,
92... Dice, 93... Punch, 94... Punch guide, 101... Feed bar 102B~1
02F...Holding part, 103...Elevating beam, 107
...Second I2 feeding cylinder, A...Film cutting process, B...Boat welding process, D...Shoulder sealing process, E...Shoulder cooling process, F...Trimming process.

Agent Hiroshi Mori Moto Figure 3 Figure 5 49.-Siri for insects

Claims (1)

[Scope of Claims] 1. A chuck member is inserted into an opening at the end of a cylindrical film that is unwound from a flat, laminated and wound raw material, and the end of the cylindrical film is locked in the chuck member; After moving this chuck member and pulling out a predetermined amount of the cylindrical film, air is blown into the cylindrical film to form a predetermined range of the cylindrical film into a cylindrical shape. A method for cutting a cylindrical film, comprising: clamping a predetermined portion of the film along a direction perpendicular to the flat plane when the film is fed out, and cutting the cylindrical film near the clamping portion. 2. A plurality of circular holding rollers to support the outer peripheral surface of the cylindrical film when it is in the cylindrical shape are installed in the film unwinding path that unwinds the cylindrical film from the original film that has been laminated and wound in a flat shape. A chuck member that can be inserted into the end opening of the shaped film is provided, and the chuck member has a
A chuck that is provided with a chuck claw capable of locking an end of the cylindrical film, and is also provided with an air nozzle that blows air into the cylindrical film, and that moves the chuck member along a film drawing path to pull out a predetermined amount of the cylindrical film. A moving device is provided in the film pulling path behind the circular holding roller,
A cylindrical film characterized in that a clamping device having a pair of clamping surfaces extending in a direction perpendicular to the flat plane of the drawn cylindrical film is provided, and a means for cutting the cylindrical film is provided near the clamping device. Cutting device. 3. A cylindrical film cutting device according to claim 2, and a first welding device for inserting a plug member into the cut opening of the cut cylindrical film and welding the plug member to the cylindrical film. and a second welding device for welding the opening part of the cylindrical film;
a welding part cooling device for cooling the seal part welded by the welding device; a trimming device for cutting off unnecessary parts of the seal part; a first conveying device that maintains the shape and conveys it to the first welding device, the first welding device, the second welding device;
A bag-shaped container manufacturing apparatus comprising: a second conveying device that conveys a cylindrical film between a welding device, a welded part cooling device, and a trimming device.