JPH048285B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for manufacturing hollow cushioning bags used for packaging various articles, and in particular, the present invention relates to a manufacturing device for hollow cushioning bags used for packaging various articles, and in particular, the present invention relates to a manufacturing apparatus for hollow cushioning bags used for packaging various articles. ,or,
This invention relates to a manufacturing device for hollow bags in the shape of jute bags and other shapes.

[Background technology and its problems]

Conventionally, various types of cushioning materials, such as shredded cellophane paper, small pieces of Styrofoam, etc., have been used to prevent damage to various articles when they are packaged. However, these have problems in that post-processing after unpacking is troublesome and that a large amount of material is used. It is becoming more and more common for children to take on roles.

By the way, as a hollow bag for cushioning, for example,
As shown in Japanese Utility Model Publication No. 61-19102, air is blown into a cylindrical plastic film and the film is alternately welded horizontally and vertically at regular intervals to form a triangular pyramid-shaped hollow body. It is known that these hollow bodies are formed and connected.
Since this hollow body can be bent in both horizontal and vertical directions, it has the advantage that it can be easily wrapped around articles to be packaged, and is being used frequently. Moreover, what influences the cushioning performance of this hollow body is the amount of air introduced into the hollow body, and in order to improve the cushioning effect, it is necessary to enclose sufficient air. but,
When manufacturing a hollow body, the welding of the film is carried out at a fairly high temperature, so the air sealed in the hollow body is also in a high temperature state. When the temperature drops to room temperature, the volume of the air sealed at high temperature decreases, causing the hollow body to enter a so-called deflated state and not necessarily have a sufficient buffering effect.

In order to prevent such a deflated state of the hollow body, in Japanese Patent Application Laid-Open No. 59-54515, air is blown into the hollow body under atmospheric pressure and at a temperature lower than the outside temperature. However, a manufacturing method has been proposed in which the amount of temperature increase is reduced. However, in such a method,
As described in Japanese Unexamined Patent Application Publication No. 61-24428, the production of such a device requires an ultra-low temperature generator for air cooling, which poses the problem of not only making the device expensive but also increasing its size.

Furthermore, the phenomenon of hollow bodies shrinking after manufacture occurs not only in hollow bodies in the shape of triangular pyramids but also in hollow bodies in other shapes, such as those in the shape of jute bags, and a solution to this problem is desired. was.

[Purpose of the invention]

An object of the present invention is to provide an inexpensive and small-sized hollow bag manufacturing apparatus that can manufacture hollow bodies with sufficient buffering power without requiring an expensive and large-sized ultra-low temperature generator. .

[Means and actions for solving problems]

The present invention was made based on the fact that the cause of the high temperature of the air sealed in a hollow body is due to the heating during welding and sealing of the film. Whereas cooling air was used to cope with the heating during sealing, the present invention eliminates the need for an ultra-low temperature generator by creating an apparatus that is structured so that the heating during sealing does not heat the sealing air too much. This aims to achieve the above objective.

That is, in the present invention, a transverse sealer that seals a cylindrical film in a transverse direction is composed of a heater block and a receiving block that can come into contact with and separate from each other with the cylindrical film in between, and these heater blocks and receiving blocks Covers for guiding the film to the sealing surfaces of each block are provided on the front and rear sides of the receiving block in the film transfer direction, and compressed air is blown onto the sealing surfaces of each block between the front and rear sides of the receiving block in the film transfer direction and the cover. forming an air flow path, and further providing a bag blowing pipe on the downstream side of the film transport direction with respect to the roll;
By arranging the opening at the tip of the bag-blowing air pipe toward the transverse sealer, the heat of the transverse sealer is prevented from being transmitted to the air fed into the cylindrical film as much as possible.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the overall schematic configuration of the present invention,
FIG. 2 shows an enlarged view of a continuous triangular pyramid-shaped hollow bag produced by the apparatus shown in FIG.

In FIG. 1, a rolled long plastic film 1 is inserted between a pair of drawer rolls 3 via a guide roll 2 and drawn out.
The film 1 is transported along its length, and is placed on a triangular pyramid-shaped former 5 via a guide roll 4. This form 5
is generally used for folding a film in two, in which the film 1 is placed over a triangular pyramid-shaped former 5 from one side extending in the width direction of the film 1, and the film 1 is folded in the thickness direction of the film 1. By being pulled out to the other extended side, the film 1 is folded twice along its longitudinal direction to form a double-folded film 1A.

This double-folded film 1A is transferred to the sealing mechanism 10 via two guide rolls 6 and 7. This sealing mechanism 10 includes two pairs of delivery rolls 11 and 12 arranged at a predetermined interval, and these rolls 11 and 1 as main components.
2, and an ultrasonic sealer 30 that seals the open end side of the double-folded film 1A along the longitudinal direction of the film 1A to form a cylindrical film 1B.

In front of the sealing mechanism 10, that is, on the downstream side in the transport direction of the cylindrical film 1B, there is a pair of rolls 41 that have a flexible surface layer made of sponge or the like and sandwich the cylindrical film 1B and send it downstream. is provided. In addition, the base end 45A is placed on the unsealed double-folded film 1A side, and
An air-feeding pipe 45 is provided that passes through the cylindrical film 1B and has a tip 45B disposed downstream in the film transport direction beyond the space between the pair of rolls 41. No compressed air source is connected. Thereby, air for expanding the film is introduced into the cylindrical film 1B on the downstream side of the roll 41 via the pipe 45. Here, the reason why the surface layer of the roll 41 is made of a moderately flexible material such as sponge is to prevent the air supplied from the pipe 45 from flowing out to the upstream side of the roll 41, and also to prevent the film seal from flowing out to the upstream side of the roll 41. In order to prevent the internal pressure of the film from becoming too high and damaging the hollow bag due to the air being introduced one after another, the surface layer of the roll is deformed to a certain extent to prevent extreme internal pressure from being applied to the sealing part. This is to enable the pipe 45 to extend downstream of the roll 41.

A first transverse sealer 50 is provided on the downstream side of the pair of rolls 41 to seal the cylindrical film 1B horizontally, and
A second transverse sealer 8 is placed at a predetermined interval downstream of the first transverse sealer 50 in the film transport direction.
5 is provided. This second transverse sealer 85
is structurally exactly the same as the first transverse sealer 50, but its sealing direction is different from that of the first transverse sealer 50.
The difference is that the vertical direction is perpendicular or substantially perpendicular to 0, and the only difference is the direction in which they are arranged. As a result, the cylindrical film 1
B is sealed alternately in the horizontal and vertical directions at predetermined intervals by the first and second transverse sealers 50 and 85 to form a continuous hollow bag 90 in which triangular pyramid-shaped hollow bags 91 are connected. As shown in FIG. 2, perforations 92 are formed between each hollow bag unit 91 of this continuous hollow bag 90 so that the continuous hollow bag 90 can be easily cut to an appropriate length. has been done.

Reference numeral 48 in FIG. 1 is a bag-blowing air pipe that is opened downstream of the roll 41 with its tip facing the transverse sealer 50. Single bag 9
When manufactured by cutting each bag 91 into pieces, the purpose is to blow each single piece 91 and store it in a storage container through a predetermined chute (not shown), and it is not used when manufacturing the continuous hollow bag 90. .

3 and 4, the sealing mechanism 10
The detailed structure of is shown. The seal mechanism 10 is
The movable frame 14 includes a fixed frame 13 and a movable frame 14.
A piston rod 1 of a cylinder 18 is slidably supported by a pair of guide rods 15 and 16 fixed to the piston rod 1 and is attached to the tips of these guide rods 15 and 16 via a bracket 17.
9, it is adapted to be moved forward and backward toward the fixed frame 13. In addition, both frames 13 and 14
Stoppers 20 and 21 are respectively attached to opposing positions near both ends of both frames 13 and
These stoppers 20 and 21 come into contact when the movable frame 1 is close to the fixed frame 13
Excessive proximity of 4 is prevented.

At opposing positions of each of the fixed and movable frames 13 and 14, a pair of delivery rolls 11,
12 are respectively attached, and one each of the pair of rolls 41 is also attached respectively, and as the movable frame 14 moves forward and backward, the rolls 11, 12, and 41 also move closer to and away from each other. At this time, each delivery roll 11,
The circumferential surfaces of the feed rolls 12 are lined with rubber, so that the circumferential surfaces of each pair of feed rolls 11 and 12 come into contact when the frames 13 and 14 approach each other. The circumferential surfaces of the rolls 41 are brought into contact with each other to the extent that they are slightly recessed, so that the incoming air does not leak out to the cylindrical film 1B. Each pair of rolls 11, 12, 41 is rotated in the same direction and at the same speed by a motor and a gear interlocking mechanism (not shown), so as to send out the films 1A, 1B.

In both frames 13 and 14, the ultrasonic sealer 3 is located above one guide shaft 15.
0 is set. This sealer 30 has a horn 32 whose base end is supported by one guide shaft 15 via a bracket 31, and an anvil which is opposed to the tip of the horn 32 and attached to the movable frame 14 via a bracket 33. 3
It has 4. Horn 32 of this anvil 34
The portion that comes into contact with is formed into a thin arc shape so that ultrasonic sealing can be performed smoothly. Further, the tip of the horn 32 is supported by the fixed frame 13 via a tip support bracket 35, and the horn 32 is supported within the bracket 35.
A cooling air circulation hole 35 provided on the circumferential surface of the tip of the
The horn 32 is cooled by the air flowing through A, thereby preventing the horn 32 from overheating. In this way, the horn 32 and anvil 34 of the ultrasonic sealer 30 are separately attached to the fixed frame 13 and the movable frame 14, respectively, so that the anvil 34 is directed toward the horn 32 as the movable frame 14 moves back and forth. Once upon a time, they became close and separated. Therefore, if the movable frame 14 is moved away from the fixed frame 13, each roll 11, 12, 41 and horn 3
2. The anvils 34 are opened at the same time, and the film 1
A can be inserted into the sealing mechanism 10, and on the other hand, if the film 1A is brought closer, the film 1A can be fed and sealed.

Note that the guide roll 7 and the air supply pipe 45 are also attached to the fixed frame 13.

5 to 7, the first transverse sealer 5
The detailed structure of 0 is shown. In these figures, the transverse sealer 50 includes a pair of frames 51 and 52 whose sides are generally pestle-shaped with a constricted center, and the four corners of these frames 51 and 52 are connected and fixed by rods 53. These frames 51,5
Two pairs of eccentric pieces 54, one pair on the left and right, are rotatably supported on the shaft portion 54A slightly above the center between the two frames. A total of two connecting shafts 55 are spanned between the mutually facing pieces 54, respectively. A turning block 57 is supported by these two connecting shafts 55 via bearings 56, and therefore, this turning block 57 is connected to the eccentric piece 54.
By the action of the connecting shaft 55 and the connecting shaft 55, it becomes a kind of parallel link as a parallel movement mechanism, and can be rotated while maintaining the horizontal position. Also,
Between the frames 51 and 52, a pair of eccentric pieces 58 having the same structure as above are also rotatably supported on the shaft portions 58A of the left and right pairs of eccentric pieces 58 slightly below the center, and opposite eccentric pieces 58 Two connecting shafts 59 are spanned between them, and a turning block 61 having substantially the same shape as described above is also supported via bearings 60 on these connecting shafts 59, so that it can be driven to turn while maintaining the same horizontal position. ing.

The four upper and lower eccentric pieces 54, 5
8, one piece 54, 5 each at a predetermined position
The shaft portions 54A and 58A of No. 8 are extended to protrude from the frame 51 on the right side in FIG.
63 is attached, and these gears 62,
63 are connected by two idle gears 64 (only one shown in solid line in FIG. 7) having the same gear condition. Therefore, when the rotation of the drive motor (not shown) is transmitted to the sprocket 65 fixed to the lower shaft portion 58A, the upper and lower eccentric pieces 54, 58 rotate in opposite directions at the same speed, and therefore the rotation blocks 57, 58 rotate in opposite directions at the same speed. 61 is designed to rotate while maintaining a horizontal position.

As shown in FIGS. 5 and 6, a heater block 67 is fixed to one end of the upper swing block 57 via a heat insulating material 66 such as asbestos.
A heater 68 is inserted into a hole 67A provided in the heater block 67. Furthermore, covers 69 made of fluororesin are attached to the front and rear sides of the heater block 67 to guide the film 1B to the sealing surface of the heater block 67, thereby preventing the film 1B from coming into contact with the side surfaces of the block and keeping it warm. is planned. Further, the lower end side of the heater block 67 is formed to be slightly tapered, and a groove 67A is formed in the center of the lower end surface, which serves as a relief groove for a cutter blade to be described later.

On the other hand, at one end of the lower turning block 61, there is a receiving block 7 opposite to the heater block 67.
0 is supported to be movable in the vertical direction via a pair of bolts 71, and this receiving block 70 is always biased to protrude upward by the action of a spring 72 interposed between the receiving block 70 and the turning block 61. has been done. At this time, when the heater block 67 descends and comes into contact with the receiving block 70 and further lowers, the receiving block 70 descends against the spring 72, and the bolt 71 protrudes downward by that amount. Furthermore, a cushion pad 73 made of silicone rubber or the like is embedded in the upper end surface of the receiving block 70 at the portion that comes into contact with the lower surface of the heater block 67 to ensure good sealing. Furthermore, an auxiliary heater 74 with a small heat generating capacity is inserted into two holes 70A provided in the receiving block 70, so that the receiving block 70 is also heated to some extent. Slit groove 70B provided in the center of the receiving block 70
Inside is a cutter blade 7 having a sawtooth portion 75A at the upper end.
5 are arranged so that their positions can be adjusted. The position of the cutter blade 75 is adjusted by adjusting the position of a pair of rods 76, one end of which is fixed to the cutter blade 75, relative to the turning block 61 by turning an adjustment bolt 77, and fixing this position with a set screw 78. I will do it. At this time, the spring 79 provided around the adjustment bolt 77 is for smooth adjustment, and does not necessarily need to be provided. Further, the upper end position of the cutter blade 75 is always retracted into the receiving block 70 when the receiving block 70 is not in contact with the heater block 67 and is protruded upward by the biasing force of the spring 72. Yes, cutter blade 7
This prevents the tip of the film 1B from hitting and damaging the film 1B. In addition, cutter blade 7
5, the amount of protrusion of the tip of the cutter blade 75 when the receiving block 70 is lowered changes, and the perforation 92 formed at the center of the heat-sealed portion of the film 1B, that is, between each hollow bag unit 91, changes.
When the formation state of the hollow bag 91 changes and the amount of protrusion is increased to a predetermined value or more, the perforations are continuous and the single hollow bag 91 is cut into pieces one by one.

Covers 80 made of fluororesin are fixed to both the front and rear sides of the receiving block 70 for guiding the film 1B to the sealing surface of the receiving block 70, thereby protecting the film and keeping it warm. The inner surface of the cover 80 has a recess 80 along the receiving block 70 and an open upper end serving as an air flow path.
A is formed in the recess 80A, and a horizontal hole 70C and a vertical hole 7 formed in the lower part of the receiving block 70 are formed in the recess 80A.
0D is connected. Therefore, this vertical hole 70D
A hole 61 is formed in the pivot block 61 downwardly.
When the compressed air pipe inserted from A is connected,
Compressed air is supplied through vertical holes 70D, horizontal holes 70C, and recesses 80A.
The liquid is ejected from the upper end opening 80B of the recess 80A to the vicinity of the sealing portion of the sealing mechanism 10 through the concave portion 80A. Therefore, the heat generated in the heater block 67 and the receiving block 70 is cooled by this compressed air, so that the air injected into the cylindrical film 1B is not heated as much, and therefore, the heat generated in the portions of the heater block 67 and the receiving block 70 is not heated so much as in the pipe 45. Even if the air introduced is not used as cooling air, each hollow bag unit 91 is prevented from deflating later. Here, an air blowing means 81 is formed by the vertical hole 70D of the receiving block 70, the horizontal hole 70B, and the recess 80A of the cover 80.

Note that the structure of the second transverse seal 85 is the same as that of the first transverse seal 50 as described above, so illustration and description thereof will be omitted.

Next, the operation of this embodiment will be explained.

The rolled film 1 is continuously pulled out by a pull-out roll 3, then folded in half in the longitudinal direction by a former 5, and sent to a sealing mechanism 10. This sealing mechanism 10 is opened by a cylinder 18 at the time of initial insertion of the folded film 1A, but is thereafter closed. As a result, the film 1A is continuously fed forward and its open end side is sealed by the ultrasonic sealer 30 to form a cylindrical film 1B. This cylindrical film 1B is held by a roller 41 which is rotated at the same speed and in the same direction by the same driving source as the rolls 11 and 12, and is fed further forward and is extended beyond this roller 41. Air is introduced into the interior through the pipe 45 and expanded. At this time, since the tip of the cylindrical film 1B is closed by the previous seal, the introduced air will not escape.

The film 1B expanded in this manner is sent to the first and second transverse sealers 50 and 85, and is passed between the heater block 67 and the receiving block 70 of these sealers 50 and 85 in the open state. Pass and move forward. At this time, the heater block 67
The operation of the upper and lower rotating blocks 57 and 61 is the same as that of the upper and lower rotating blocks 57 and 61, and the operation of the eccentric piece 5
4 and 58, and when both blocks 57 and 61 approach and abut in parallel while maintaining their horizontal state, the film 1B is heat-sealed, and the receiving block 70
is lowered against the spring 72, and the upper end of the cutter blade 75 is exposed from the receiving block 70, and the cutter blade 75 is exposed at the perforation 92.
or cutting at the perforations 92. After both blocks 57, 61 are brought into contact, they move away from each other while rotating, and when the rotation exceeds 180 degrees, they begin to approach each other again, and when they rotate 360 degrees, they contact again and heat up. A seal is made and the operation is performed in the same manner.

The rotation of the eccentric pieces 54, 58 is performed in synchronization with the respective rolls 11, 12, 41, and the period of contact between the heater block 67 and the receiving block 70, that is, the heat seal cycle, is , 2 hollow bags 91, i.e. 2 pitches 4
Since the feed amount is set equal to the feed amount for 10 minutes, and the timing of sealing of the first and second transverse sealers 50 and 85 is also set equal, two hollow bags 91 are manufactured continuously in a constant cycle. Ru. Also,
When each hollow bag unit 91 is separated at the perforation 92, each unit 91 is blown away by the bag blowing air pipe 48 and stored in the storage container via a predetermined chute.

According to this embodiment as described above, there are the following effects.

That is, in this embodiment, the air blowing means 81 is provided at the first and second transverse sealers 50 and 85.
Since the air inside the cylindrical film 1B is hardly heated by each sealer 50, 85, the air in the cylindrical film 1B is hardly heated. 91 does not shrink after manufacturing, and can provide a sufficient cushioning effect. Furthermore, since there is no need to cool the incoming air, there is no need for an expensive, large-sized ultra-low temperature generator, and the device can be provided in a small size and at low cost.

In particular, in this embodiment, the transverse sealers 50, 85
The heater block 67 and the receiving block 70 are capable of coming into contact with and separating from each other with the cylindrical film 1B in between.
These blocks 67, 7
0 covers 69, 8 on the front and rear sides in the film transport direction.
Since 0 is provided, the cylindrical film 1B can be guided to the sealing surface of the block without coming into contact with the side surface of the block, and heat conduction from the block to the film 1B except during sealing can be prevented. Moreover,
Since a recess 80A is formed on the inner surface of the cover 80 on the side of the receiving block 67 for blowing compressed air onto the sealing surfaces of the blocks, compressed air can be accurately blown onto the sealing surfaces of the blocks to minimize heat conduction from the blocks to the film 1B. In addition, since the recess 80A can be formed using the cover 80, the compressed air flow path can be configured easily and compactly. Furthermore, a bag blowing pipe 48
In addition, a pipe 4 for blowing off the bag is provided.
Since the tip opening of 8 is arranged to face the cross sealer 50, in other words, the bag blowing air blowing pipe 48 is also used for cooling the cross sealer 50, so it is possible to use a special compressed air blowing pipe, etc. The heat generated from each block 67, 70 of the transverse sealer 50 can be transferred to the block 7 without attaching a
0 (compressed air from the recess 80A and compressed air from the bag blowing pipe 48) can be efficiently cooled.

Further, since the seal of the double folded film 1A employs ultrasonic sealing using the ultrasonic sealer 30, the sealing strength can be increased and there is no air leakage, so that the bag can be prevented from deflating from this point as well. In addition, the first and second transverse sealers 50 and 85
Since the heater block 67 and the receiving block 70 are rotated in parallel with their seal heater surfaces facing each other at all times, unlike conventional sealers in which the seal heater surfaces rotate 360 degrees, the seal contact time is shortened. Since it is long and in stable contact, this transverse seal can also be manufactured with high strength and stability, and there is no air leakage from here. Furthermore, as mentioned above, since the sealing strength of each part is high, the sealing speed can be increased, and productivity can be improved. Furthermore, since the position of the cutter blade 75 is adjustable, continuous hollow bags 90 or single hollow bags 91 can be manufactured as desired by this adjustment.
In addition, since the manufacturing operation is continuous, control is easy and the required number of products can be produced when required. moreover,
Not only the heater block 67 but also the receiving block 7
Since the auxiliary heater 74 is also provided in the 0, the temperature of the heater part can be precisely controlled and better sealing can be achieved.

In carrying out the present invention, the first and second transverse sealers 50 and 85 are different from each other as in the above embodiment.
The transverse sealer 50 is not limited to a horizontal seal, and the second transverse sealer 85 is not limited to a vertical seal, but the reverse is also possible, and the seal direction is not limited to horizontal or vertical, but can be a seal at any angle. good.
Further, the hollow bag is not limited to a triangular pyramid-shaped hollow bag that is sealed alternately in two orthogonal directions, but the present invention can also be applied to an apparatus for manufacturing a burlap bag-shaped hollow bag that is sealed in only one direction. In this case, one cross-sealer is sufficient, but a plurality of cross-sealers that seal in the same direction may be provided to simultaneously manufacture a plurality of hollow bags. Further, a transverse sealer 50,
The turning drive mechanism in which the heater block 67 and the receiving block 70 are in a parallel state in 85 is not limited to the one using the eccentric pieces (eccentric cams) 54 and 58 arranged in a parallel link shape as in the above embodiment.
Other mechanisms such as a planetary gear mechanism, differential gear mechanism, grooved cam mechanism, etc. may also be used.

〔Effect of the invention〕

According to the present invention, there is an effect that a hollow body having sufficient buffering force can be manufactured at low cost and in a small size without requiring an expensive and large-sized ultra-low temperature generator.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic overall configuration diagram, Fig. 2 is a perspective view of an example of a continuous hollow bag manufactured according to this embodiment, and Fig. 3 is a diagram of an embodiment of the present invention. 4 is a plan view of the sealing mechanism section, FIG. 4 is a sectional view taken along the line -- in FIG. 3, FIG. 5 is a vertical sectional view of the first transverse sealer of this embodiment, and FIGS. FIG. 1, 1A, 1B...Film, 5...Former, 10...Seal mechanism, 30...Ultrasonic sealer, 32...Horn, 34...Anvil, 40...
... Roll, 45 ... Pipe, 48 ... Air blowing pipe for bag blowing, 50 ... First transverse sealer, 5
7, 61...Swivel block, 67...Heater block, 68...Heater, 70...Receiving block,
75...Katsuta blade, 80...Cover, 80A...
Recessed portion, 80B...opening, 81...air blowing means, 85...second transverse sealer, 90...continuous hollow body, 91...hollow bag alone.

Claims (1)

[Scope of Claims] 1. A former that double-folds a long film transported along its longitudinal direction; a sealing mechanism that forms a cylindrical film by sealing along the longitudinal direction; A pair of rolls sandwiching each other, and a pair of rolls arranged to pass through the cylindrical film and having a tip located downstream beyond the rolls in the film transport direction to send air downstream of the rolls of the cylindrical film. In the hollow bag manufacturing apparatus, the hollow bag manufacturing apparatus includes a pipe for entering the bag, and a transverse sealer that is provided on the downstream side of the roll and seals the cylindrical film in a transverse direction. It is composed of a heater block and a receiving block that can come into contact with and separate from each other, and covers are provided on the front and rear sides of the heater block and receiving block in the film transport direction to guide the film to the sealing surface of each block. An air passage for blowing compressed air onto the sealing surface of each block is formed between the front and rear side surfaces of the film in the film transport direction and the cover, and a bag blowing pipe is further provided on the downstream side of the roll in the film transport direction. A hollow bag manufacturing apparatus characterized in that the bag blowing pipe is provided with a tip opening thereof facing the cross sealer. 2. In the hollow bag manufacturing apparatus according to claim 1, the transverse sealer includes a first transverse sealer that transversely seals a cylindrical film in a predetermined direction, and a transverse sealer that transversely seals a cylindrical film in a predetermined direction; A second transverse sealer is provided on the downstream side of the spacer film transfer direction and performs transverse sealing in a direction substantially orthogonal to the transverse direction of the first transverse sealer, and is capable of producing a triangular pyramid-shaped hollow bag. Equipment for manufacturing hollow bags. 3. The hollow bag manufacturing apparatus according to claim 1 or 2, wherein the sealing mechanism for sealing the open end side of the film includes an ultrasonic sealer. Device. 4. In the hollow bag manufacturing apparatus according to claim 2, the first and second transverse sealers are provided with a drive mechanism that swings and drives these transverse sealers, and a drive mechanism that drives the transverse sealers so that the seal portion of the transverse sealer is always on the film side. 1. An apparatus for producing a hollow bag, characterized in that the hollow bag manufacturing apparatus is configured to intermittently seal a cylindrical film by driving the film close to each other and away from each other by a parallel movement mechanism.