JP2003341610A - Cutting device for packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize the lowering of productivity and to smoothly form the cut part of a seal preventing the dislocation of each cutting position of an ablation cutter and a corner cutter. <P>SOLUTION: This cutting device for a packaging bag is provided with a receiving member 52 and a pair of seal bars 51 for holding extensively over a lateral seal part 91, a first cutting mechanism 46 with a center cutter 48 for cutting and for dividing a packaging bag 2 along a lateral seal part 91 held by the bar 51 and the member 52, and a second cutting mechanism 47 with a set of side cutters 49 for cutting the corner on both end sides of the seal part 91 held by the bar 51 and the member 52. The mechanism 46 is installed at a position corresponding to the seal part 91 cut by the mechanism 47. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag for cutting each packaging bag, which is obtained by filling a resin film with a filling material such as liquid or paste, and cutting the packaging bag into individual packaging bags. Regarding the cutting device.

[0002]

2. Description of the Related Art Conventionally, there is a packaging bag in which a beverage or food such as a liquid or a paste is filled in a resin film and packed. As this type of packaging bag, there are various types such as a four-sided seal type in which four sides of a folded film are heat-sealed (heat-sealed), and a self-standing type in which four sides are heat-sealed and one side end is a bottom surface. The packaging form is known.

In the packaging bag as described above, a film is conveyed by a filling and packaging machine in a vertical direction from vertically upward to downward, and the outer periphery is heat-sealed and filled with a filling material, and then separated from the film. It is manufactured by

Japanese Utility Model Publication No. 7-33804 discloses a vertical filling and packaging machine for producing a four-sided seal type packaging bag. This conventional vertical filling and packaging machine comprises a transport device that constitutes a transport route for a film supplied from a film supply device, a set of vertical sealing devices that heat seal both sides of the film in the longitudinal direction, and It is equipped with a filling device for filling the filling material, a lateral sealing device for heat sealing the film in the lateral direction, and a cutting device for cutting along the lateral sealing portion of the packaging bag.

In the conventional filling and packaging machine configured as described above, the vertical seal portion is formed by each vertical seal device in the film transported by the transport device, and the horizontal seal is performed by the previous operation of the horizontal seal device. By forming the part, the film is formed into a bag shape. The bag-shaped film is formed into a packaging bag by filling the filling material with the filling device and forming the horizontal sealing portion with the horizontal sealing device. Then, the packaging bag in which the filling is enclosed is cut from the film by being cut along the horizontal seal portion by the cutting device.

[0006]

By the way, the packaging bag as described above is stored in a frozen state when food is filled as a filling material. In particular, a packaging bag made of a resin film is hardened when frozen, resulting in sharp corners on all sides. And the frozen packaging bag is
When they are displayed side by side at the time of sale, or when they are stored in a transport case or the like and transported, the tips of the four corners may come into contact with other packaging bags.

[0007] When the tip of the corner of the packaging bag collides with another packaging bag in a frozen state, the packaging bag may damage the other packaging bag, and the packing material of the other packaging bag leaks out. There is a risk of being lost. As a measure against such a problem, a measure is taken in which the four corners of the packaging bag, that is, both ends of the seal portion are cut into, for example, an arc shape.

However, the conventional filling and packaging machine has a corner cutting device for cutting both ends of the sealing portion of the packaging bag in an arc shape, and a cutting device for cutting along the sealing portion whose both ends are cut. However, the packaging bags are arranged at different positions on the transportation route. In other words, in the manufacturing method of the packaging bag, the corner cutting step for cutting the corners at both ends of the seal portion, and the cutting step for cutting the seal portion cut in the corner cutting step, respectively. It was done independently.

Therefore, the packaging bag cut by the conventional filling and packaging machine is, as shown in FIG. 25, broken by broken lines in FIG. 25 with respect to the cutting curve L _{5 at} both ends of the seal portion 201 whose corners are cut. There is a problem that the position of the dividing line L ₆ shown in the figure is displaced. Therefore, in the packaging bag thus displaced, both ends of the seal portion 201 have an irregular shape, and there is an inconvenience that the appearance of the cut portion is impaired.

On the other hand, in the packaging bag, it is required that the cut portion of the seal portion is smoothly arranged and cut so that the seal portion has a good feel and a neat appearance. When cutting the seal part of the packaging bag, if the blade edge of the cutter, which is abutted along the seal part, is cut by a single protruding operation from the direction orthogonal to the seal part, the heat-sealed seal part is insufficiently hardened. Therefore, there is a problem that the thread is pulled over the cut portion of each of the divided seal portions. As described above, since a fine burr is generated at the cut portion where the thread is pulled, there is a disadvantage that the appearance is deteriorated.

Therefore, in order to cut the cut portion of the seal portion into a smooth and clean state, when the blade edge of the cutter is abutted against the seal portion, the blade tip extends from one end side to the other end side of the seal portion. It is desirable to use a cutting method of gradually abutting and sliding along the seal portion to cut. Such a desirable cutting method is adopted in the filling and packaging machine disclosed in Japanese Utility Model Laid-Open No. 7-33804. However, when cutting the corners at both ends of the seal portion into a predetermined shape, it is difficult to cut by sliding the blade edge of the cutter.

In consideration of the various problems described above, it is possible to prevent the relative displacement between the cutting curve L ₅ and the dividing straight line L ₆ of the seal portion 201 from occurring, and to prevent the seal portion 20 from moving.
A cutting device capable of satisfactorily cutting one cutting point has been studied.

For example, a cutting cutter for cutting along the seal portion and a pair of corner cutters at both ends of the seal portion on both sides in the longitudinal direction of the cutting cutter are fixed by aligning the cutting edges in a straight line. However, a cutting device is conceivable in which each blade edge is inclined with respect to the seal portion so as to gradually abut from one end side to the other end side of the seal portion. However, in this cutting device, since the cutting edges of the cutting cutter and the set of corner cutters are inclined with respect to the seal portion,
The stroke of the entire blade edge that is integrally moved when cutting the seal portion becomes large. Therefore, in this cutting device, the cutting time required for cutting the seal portion is relatively long, and the linear portion of the seal portion is cut along with the stringing state, so that it is difficult to cut the seal portion of the product beautifully. is there.

Therefore, in order to shorten the stroke of the entire cutting edge, each cutting edge of a pair of corner cutters is inclined symmetrically so that they are gradually abutted from both sides of the seal portion toward the center side. Another cutting device is conceivable in which the cutting edge of the cutting cutter has a saw-like linear shape. However, in this cutting device, although the cutting time of the seal portion can be shortened, there arises a disadvantage that it is difficult to smooth the cut portion by the saw blade-shaped cutting cutter.

In view of such conflicting circumstances, according to the present invention, it is possible to reliably prevent the cutting positions of the cutting cutter and the corner cutter from being displaced, and to smooth the cutting position of the sealing portion of the packaging bag. An object of the present invention is to provide a device for cutting a package, which can be shaped into the same shape and can minimize a decrease in productivity.

[0016]

In order to achieve the above-mentioned object, a packaging bag cutting device according to the present invention is provided with a heat-sealed seal portion provided on a path of a filling and packaging machine where a film is conveyed. A device for cutting a packaging bag, which cuts and separates into individual packaging bags, wherein a pair of sandwiching bodies sandwiching the seal portion across the seal portion and a seal portion sandwiched between the sandwiching bodies are cut. And a second cutting mechanism having a cutting cutter for cutting the packaging bag, and a second cutting mechanism having a corner cutter for cutting at least one corner of the seal portion sandwiched by the sandwiching body. Equipped with. And the 1st cutting mechanism is provided in the position corresponding to the seal part cut by the 2nd cutting mechanism.

According to the packaging bag cutting apparatus of the present invention configured as described above, it is possible to reliably prevent the occurrence of positional deviation between the cutting positions of the seal portion cut by the cutting cutter and the corner cutter. It Therefore, according to this packaging bag cutting device, the packaging bag is cut off from the film so that the cut points on the outer periphery of the packaging bag are smoothly continuous.

Further, in the cutting cutter provided in the packaging bag cutting device according to the present invention, when the cutting cutter is protruded from the seal portion, the blade edge of the seal portion moves from one end side to the other end side of the seal portion. It is preferably inclined so that it can be gradually abutted. As a result, the resistance when the blade tip cuts the seal portion is suppressed, so that the cut portion of the seal portion of the packaging bag can be cut smoothly. Further, since the cutting edge of the cutting cutter is inclined, the stroke of the cutting cutter as a whole can be made relatively small, so that reduction in productivity is suppressed.

Similarly, the corner cutter provided in the packaging bag cutting device according to the present invention is such that, when the corner cutter is projected to the seal portion, the blade edge cuts from the center of the straight or curved section to be cut with respect to the seal portion. It is preferable that it is inclined so as to gradually abut against both ends. As a result, the resistance when the blade tip cuts the seal portion is suppressed, so that the cut portion of the seal portion of the packaging bag can be cut smoothly. Further, since the cutting edge of the corner cutter is inclined, the stroke of the entire corner cutter can be made relatively small, so that the reduction in productivity is suppressed.

Further, the packaging bag cutting device according to the present invention is
It is preferable to include a recovery mechanism that recovers the chips cut from the corners of the seal portion by the second cutting mechanism. The recovery mechanism improves the reliability of the cutting operation by the corner cutter.

The packaging bag cutting device according to the present invention is
The recovery mechanism has a recovery member that recovers the chips from one of the opposing surfaces of the pair of holding bodies, and the first cutting mechanism moves integrally with the movement of the one holding body to operate the recovery member. It has an operating member. Then, the recovery member is moved to the recovery position facing the facing surface of the one sandwiching body by the operating member when the pair of sandwiching bodies is separated from the path of the film,
When the cutting cutter cuts the seal portion, it is preferably moved to a retracted position separated from the facing surface of the one holding body. As a result, the collecting mechanism collects chips by the collecting member without hindering the cutting operations of the first and second cutting mechanisms, thereby suppressing a decrease in productivity due to the chip collecting operation.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a specific embodiment of the present invention will be described with reference to the drawings of a filling and packaging machine.

(First Embodiment) A vertical filling and packaging machine for transporting films in a vertical direction from vertically upward to downward and filling a four-sided seal type packaging bag with a filling material for packaging will be described. . As shown in FIG. 1 and FIG. 2, the vertical filling and packaging machine has a transport device 11 for transporting the film 1 supplied from a film supply device (not shown) and a predetermined film 1 in the transport route of the film 1. A bag-making folding device 12 for folding into a shape, a pair of vertical sealing devices 13, 14 for respectively heat-sealing two vertically opposed sides of the folded film 1, and a filling material is filled in the film 1. The filling device 15 and the seal cutting device 16 for heat-sealing the film 1 in the lateral direction (horizontal direction) and for cutting along the lateral sealing portion in the lateral direction are provided.

Hereinafter, along the transport path of the film 1, a transport device 11, a bag making folding device 12, and a vertical sealing device 1
3, 14, the filling device 15, and the seal cutting device 16 will be described in this order.

(1) Conveying device The conveying device 11 constitutes a conveying route of the film 1 from the film supplying device to the seal cutting device 16, and is shown in FIG.
As shown in FIG. 1, a guide roller 21 for conveying the film 1 supplied from the film supply device in the direction of arrow A in FIG.
It has two pairs of feed rollers 22 for carrying in the direction. Although not shown, the transport device 11 has a plurality of guide rollers for transporting the film 1 along the transport path of the film 1. The transport device 11 transports the film 1 vertically downward by rotating the pair of feed rollers 22 with the film 1 interposed therebetween.

(2) Bag-making folding device The bag-making folding device 12 is arranged below the guide roller 21 as shown in FIGS. 1 and 2. Below the guide roller 21, a trapezoidal plate 25 having an upper side longer than a lower side but smaller than a width of the film 1 and two slanted sides whose angles are equal to each other is oblique to the vertical direction. It is arranged.

In the vicinity of the lower side of the trapezoidal plate 25, a rectangular width defining plate 26 having a width equal to the length of the lower side of the trapezoidal plate 25 is arranged in the vertical direction.
Two guide arms 27 extending in the horizontal direction and in a direction perpendicular to the width direction of the width defining plate 26 are provided on both sides of the guide arm 27.

Film 1 via guide roller 21
Is fed downward by the rotation of the feed roller 22 (see FIGS. 1 and 2) while being in close contact with the upper surface of the trapezoidal plate 25 and the outer surface of the width regulating plate 26.
The spread of the end portion of the film 1 is suppressed from the outside of the film 1 by 7.

Below the width regulating plate 26, two holding plates 28 for folding the film 1 are arranged. The pressing plates 28 are arranged inside the film 1 so as to face each other with a gap therebetween, and support two ridges from the inside of the film 1.

Further, the holding plates 28 are arranged such that the facing surfaces are inclined with respect to the transport direction so that the intervals facing each other along the transport path of the film 1 become gradually smaller. By passing between the opposite
The film 1 is folded into a quadrangle that can be heat-sealed on all sides.

(3) Vertical Sealing Device As shown in FIGS. 1 and 2, the pair of vertical sealing devices 13 and 14 are arranged at positions facing each other with the transport path of the film 1 interposed therebetween. Each vertical sealing device 13, 14
Is a seal bar 31 for heat-sealing the film 1 in the longitudinal direction, a receiving plate 32 for sandwiching the film 1 between the seal bar 31, and these seal bars 3
1 and the support plate 32 for supporting the seal bar and the support plate 34 for the support plate, and a vertical seal for moving the support body 33 for the seal bar and the support plate 34 for the support plate in the direction of approaching and separating from each other. Air cylinder 35,3
6 and.

The seal bar 31 and the receiving plate 32 are arranged at positions facing each other with the film 1 interposed therebetween, and the seal bar support 33 and the receiving plate support 34 are provided.
It is fixed to. Further, the seal bar 31 has a built-in heating means (not shown) such as an electric heater. Each of the air cylinders 35, 36 has rods 37, 38 for supporting the support member 33 for the receiving plate and the support member 34 for the seal bar, and the tips of the rods 37, 38 are opposed to each other to form a filling and packaging machine. Is fixed to a frame (not shown) that constitutes the. The distance between each seal bar 31 and the receiving plate 32 is set so that the seal bar 31 is pressed against the receiving plate 32 by advancing the rods 37 and 38 of the air cylinders 35 and 36.

The vertical sealing devices 13 and 14 are sandwiched between the seal bar 31 and the receiving plate 32 by driving the air cylinders 35 and 36 while heating the seal bar 31 by the heating means. The longitudinal portions of the film 1 are simultaneously heat-sealed.

(4) Filling device As shown in FIGS. 1 and 2, the filling device 15 includes a loading pipe 41 for loading a filling material such as a beverage or a gelled food into the film 1 and the inside of the film 1. It has a pair of squeegee rollers 42 that divides the filling material filled in to form a packaging bag.

The injection pipe 41 is provided with an outflow port 43 through which the filling material flows out, extending to the vicinity of the squeegee roller 42. The pair of percussion rollers 42 are the feed rollers 2
It is located below 2 and is opposed to each other with the film 1 on the transport path sandwiched therebetween. These crawler rollers 42
Are rotationally driven in synchronization with the rotation of the feed roller 22 of the above-described transport device 11.

The squeeze roller 42 is for dividing the film 1 by sandwiching the film 1 and dividing the film 1 into a predetermined amount of fillers put in the film 1. The roller drive mechanism (not shown) B _{1 in} FIG. And B ₂ so as to be opposed to each other in the B ₂ direction. In addition, the crawler roller 14
Rotates by sandwiching the film 1 to feed the film 1 together with the feed roller 13 downward.

Below the squeeze roller 14, the film 1 filled with the filler is heat-sealed in the horizontal direction of the film 1 in the horizontal direction, which is also the boundary portion before the packaging bag is cut off. A seal cutting device 16 for forming a seal portion is arranged.

(5) Seal Cutting Device As shown in FIG. 3, the seal cutting device 16 includes a lateral sealing mechanism 45 for performing heat sealing in the lateral direction of the film.
A first cutting mechanism 46 having a center cutter 48 for cutting the lateral seal portion heat-sealed by the lateral seal mechanism 45 into individual packaging bags, and corners at both ends of the lateral seal portion, respectively. And a second cutting mechanism 47 having a pair of side cutters 49 for cutting.

As shown in FIGS. 3 and 17, the lateral sealing mechanism 45 sandwiches the film 1 between the sealing bar 51 for heat sealing the film 1 in the lateral direction and the sealing bar 51. Receiving member 52, a seal bar support 53 for supporting the seal bar 51, a receiving member support 54 for supporting the receiving member 52, and a seal bar support 53 for the receiving member support 54. 3 is provided with a set of guide shafts 55 for movably supporting them in the directions of arrows C ₁ and C ₂ and a moving mechanism (not shown) for moving the seal bar support 53 along the guide shafts 55. There is.

The opposing surfaces of the seal bar 51 and the receiving member 52 are formed to have a sufficient length for sandwiching the film 1 in the lateral direction. A plurality of grooves 57, which are parallel to the longitudinal direction of the horizontal seal portion, are provided on each of the facing surfaces, and the grooves 57 provide a striped pattern with sufficient sealing strength so that the films 1 of the horizontal seal portion are not peeled off. It is heat-sealed, and a good appearance of the lateral seal is secured.

The seal bar 51 is the support member 5 for the seal bar.
3 is supported and fixed via a support shaft 60, and has a heating means (not shown) such as an electric heater built therein. As shown in FIGS. 3 and 8, the seal bar 51 is provided with guide grooves 61 for advancing and retracting the side cutters 49 of the second moving mechanism 47, on both sides of the facing surface in the longitudinal direction. In addition, each side cutter 49 protruding from the facing surface of the seal bar 51 is provided on the facing surface of the receiving member 52.
Receiving grooves 65 into which the blade edges can enter are respectively provided. (See FIGS. 14 and 15) The receiving member 52 is supported and fixed to the receiving member support body 54 via the support shaft 62. Then, in the receiving member 52, as shown in FIG. 3, guide grooves 63 for advancing and retracting the center cutter 48 of the first cutting mechanism 46 are opened on the surface facing the seal bar 51 and both side surfaces, respectively, and are lengthened. It is provided along the direction. Further, on the opposite surface of the seal bar 51, the receiving member 5
There is provided a receiving groove 64 into which the cutting edge of the center cutter 48 protruding from the two facing surfaces can enter.

Further, the seal bar 51 and the receiving member 52
A pair of guide plates 66 for guiding the film 1 conveyed from the side of the filling device 15 to the respective facing surfaces are provided in each.

Both ends in the longitudinal direction of the seal bar support 53 are movably supported over a pair of parallel guide shafts 55. In addition, the support 53 for the seal bar
Is connected to a slider of a moving mechanism (not shown) via a connecting member, and is moved by moving the slider and the connecting member by a moving cylinder. Both ends in the longitudinal direction of the receiving member support body 54 are supported by and fixed to one end portion of a set of guide shafts 55.

Then, the lateral seal mechanism 45 moves the seal bar support 53 to the receiving member support 54 by the arrow C ₁
The seal bar 51 and the receiving member 52.
When the film 1 sandwiches the film 1 in the lateral direction, the seal bar 51 heats the film 1 and pressurizes between the opposing surfaces to form a lateral seal portion.

As shown in FIGS. 3, 4 and 5, the first cutting mechanism 46 includes a center cutter 48 for cutting along the lateral seal portion of the film 1 and the center cutter 4.
A pair of rotating arms 71 rotatably provided on both end sides of 8 in the directions of arrows D ₁ and D ₂ in FIG. 3, and a supporting arm 7 supporting the center cutter 48 via these rotating arms 71.
2 and a center cutter air cylinder 73 for moving the center cutter 48.

As shown in FIGS. 4 and 5, the center cutter 48 has a blade edge having a predetermined length corresponding to the lateral seal portion of the film 1. This center cutter 48
The cutting edge is inclined with respect to the lateral seal portion so that the lateral seal portion gradually abuts from one end side to the other end side. The inclination angle of the cutting edge of the center cutter 48 with respect to the horizontal seal portion is appropriately set according to the thickness and material of the film 1, the width of the horizontal seal portion in the longitudinal direction, and the like.

Each turning arm 71 has one end rotatably supported by both ends of the center cutter 48 via a turning support shaft 76, and the other end by both ends of a supporting arm 72 via a turning support shaft 77. And is rotatably supported. The support arm 72 is
It is provided parallel to the longitudinal direction of the center cutter 48,
It is fixedly provided on the receiving member support 54. Therefore, the first cutting mechanism 46 includes the center cutter 48,
The rotating arm 71 and the support arm 72 constitute a so-called parallel link mechanism.

The center cutter air cylinder 73 is held by a holding member 78 fixed to the receiving member support 54, and has a rod 79 that moves back and forth. In the air cylinder 73 for the center cutter, the tip of a rod 79 is rotatably connected to one rotating arm 71 via a support shaft 80, and the rod 79 rotates as the rod 79 moves forward and backward. The center cutter 48 is moved via the arm 71.

As shown in FIGS. 3, 6 and 7, the second cutting mechanism 47 includes a pair of side cutters 49 for cutting both ends of the lateral sealing portion of the packaging bag in an arc shape, and each of these side cutters 49. It has cutter support members 81 for supporting the side cutters 49, and a pair of side cutter air cylinders 82 for moving the cutter support members 81 in the directions of arrows C ₁ and C ₂ , respectively. .

The side cutters 49 are provided on both sides of the seal bar 51 in the longitudinal direction, respectively, and the cutting edge is curved from the approximate center of a curved section cut in an arc shape as shown in FIGS. 6 and 7. It is inclined so as to gradually abut toward both ends of the section.

When viewed from the front side shown in FIG. 8, each side cutter 49 has two arcs connected to each other so as to cut the end of the horizontal seal portion of each continuous packaging bag with the horizontal seal portion as a boundary. It is formed in a substantially V shape. In addition, as shown in FIG. 9, the side cutter 49 is configured so that the corners of both ends of the lateral seal portion of each of the divided packaging bags come into contact with the approximate center of each curved section when viewed in cross section. The tips are formed in a substantially W shape, each protruding toward the facing surface of the receiving member 52.

Support pieces 84 supported by a cutter support member 81 are integrally formed on each side cutter 49, and these support pieces 84 are fixed to the cutter support member 81 via fixing screws 85. .

The air cylinders 82 for the side cutters are fixed to the seal bar supports 53, respectively, and each have a rod 86 that moves back and forth. The air cylinder 82 for each side cutter has the tip of a rod 86 connected to the side cutter 49, and moves the side cutter 49 in the directions of arrows C ₁ and C _{2 as} the rod 86 moves forward and backward.

Although not shown, the seal cutting device 16
In order to forcibly cool the lateral seal portion of the packaging bag, for example, a blowing nozzle for blowing cooling air to the lateral seal portion immediately after being heat-sealed in the vicinity of the seal bar 51 may be provided. .

By the way, the chips cut by the above-mentioned second cutting mechanism 47 are attached and accumulated in the receiving groove 65 where the side cutters 49 on the receiving member 52 side advance and retreat. Therefore, the filling and packaging machine includes a chip collecting mechanism 160 that collects chips from the vicinity of each receiving groove 65. The chip collecting mechanism 160 will be described below with reference to the drawings.

(6) Chip Collecting Mechanism As shown in FIGS. 10, 11 and 12, the chip collecting mechanism 160 is a collecting member 161 for collecting chips.
And a pair of rotating arms 1 supporting the recovery member 161.
62 and the rotating arm 162 by the arrows E ₁ and E _{2 in} FIG.
Supporting base 163 that supports the rotating arm 162 so as to be rotatable in the direction of the arrow, and the compression coil spring 16 that biases the rotating arm 162 in the direction of the arrow E _1.
4 and the rotating arms 1 provided on the receiving member support 54.
A set of actuating members 166 for rotating 62 in the direction of arrow E _2.
It has and. Further, the chip collecting mechanism 160 is
And a suction unit (not shown) having a suction pump for sucking chips from the recovery member 161 via the suction hose 167.

As shown in FIGS. 10, 13, and 14, the recovery member 161 is formed in a box shape, and the size of the facing surface facing the receiving member 52 is slightly larger than the facing surface of the receiving member 52. Largely formed. Collection member 161
Has a substantially L-shaped bottom surface extending from the facing surface to a position covering the bottom surface of the receiving member 52, and the chips may fall when the chips are sucked from the receiving member 52 side. It is prevented.

Further, the opposite surface of the recovery member 161 has a structure shown in FIG.
As shown in FIG. 4, suction holes 170 having a substantially rectangular shape for collecting chips are formed at positions corresponding to the receiving grooves 65 of the side cutter 49, respectively. In addition, the recovery member 1
A connection pipe 171 to which one end of the suction hose 167 is connected is provided at 61.

The turning arm 162 is supported by the support base 163 at a substantially central portion in the longitudinal direction via a turning support shaft 173. The rotating arm 162 has a recovery member 16 at one end.
1 is provided, and the biasing plate 17 is biased by the elastic force of the compression coil spring 164 at the other end.
5 are provided.

Further, the rotating arm 162 includes a collecting member 1
A driven plate 176 that is driven by the movement of the receiving member support body 54 is fixedly provided on one end side that supports 61.
As shown in FIGS. 10 and 12, a sliding surface 177 on which the operating member 166 on the receiving member support 54 side slides is formed on the driven plate 176 with a predetermined inclination.

Therefore, the rotating arm 162 is rotated in the direction of arrow E ₂ via the driven plate 176 by the movement of the operating member 166 in the direction of arrow C ₂ , and the recovery member 161 is received by the receiving member 52. Move to the opposite collection position. Further, the rotating arm 162 is rotated in the direction of the arrow E ₁ via the driven plate 176 by the movement of the operating member 166 in the direction of the arrow C ₁ , and the retracting member 161 is retracted away from the receiving member 52. Move to position.

The supporting base 163 is provided with its base end fixed to a fixing part (not shown), and each rotating arm 162 is provided.
It has a set of support arms 179 for rotatably supporting the. The base plate of each of these support arms 179 has a connecting plate 1
A rotary support shaft 173 that supports the rotary arms 162 is provided across the distal end side.

Further, the supporting base 163 is provided with a holding plate 181 for holding the compression coil spring 164 while facing the biasing plate 175. The holding plate 181 is supported on the support base 163 via a support bar 182. Further, as shown in FIG. 11, the support base 163 is provided with a support portion 183 that supports one end of each guide shaft 55.

One end of the compression coil spring 164 is the urging plate 1.
It is supported on 75, and the other end is in contact with the holding plate 181.

The actuating member 166 is provided at a position corresponding to the driven plate 176 of the rotating arm 162 and fixed to the bottom surface side of the receiving member support body 54 via the supporting plate 186. Each operating member 166 has a sliding surface 177 of the driven plate 176.
It has a roller 185 that rolls along the top, and the roller 185 rolls along the sliding surface 177, so that the rotating arm 162 moves against the urging force of the compression coil spring 164 by the arrow. Rotate in the E ₂ direction.

The suction hose 167 has a recovery member 16 at one end.
It is connected to one connecting pipe 171 and the other end is connected to a suction pump.

The operation of the filling and packaging machine configured as described above will be described with reference to the drawings.

First, in the filling and packaging machine, as the feed roller 22 and the squeeze roller 42 rotate, the film 1
Is conveyed in the direction of arrow A, and the film 1 is folded by the bag making folding device 12. The folded film 1 is heat-sealed by the pair of vertical sealing devices 13 and 14 on two opposite sides in the vertical direction. Further, when the packaging bag located on the downstream side of the film 1 is heat-sealed and divided by the seal cutting device 16, a lateral seal portion is formed on the downstream side of the film 1, so that the film 1 is It is formed in a bag shape.

As shown in FIG. 16 (a), the bag-shaped film 1 is charged with a predetermined amount of the filler 5 by a charging pipe 41 of the charging device 15. As shown in FIG. 16 (b), the filling device 15 applies the film 1 to the squeeze roller 4
It is sandwiched by 2 and driven to rotate to form an empty filling portion 1a in which the filling 5 is not filled, and the film 1 is fed in the direction of arrow A while the filling 5 is enclosed in the bag-shaped film 1. The bag-shaped film 1 in which the filling material 5 is enclosed is fed in the direction of arrow A, so that a portion for heat sealing in the lateral direction is secured as shown in FIG.

Then, as shown in FIG. 16D, the film 1 in which the filling material 5 is enclosed is heat-sealed in the lateral direction of the film 1 by the seal cutting device 16, and the packaging bag 2
Is formed. Subsequently, the seal cutting device 16 operates as shown in FIG.
As shown in (e), the packaging bag is separated from the film 1 by cutting the corners at both ends of the lateral seal portion and cutting the lateral seal portion along the lateral seal portion.

Next, regarding the seal cutting device 16, the lateral sealing mechanism 45 and the first and second cutting mechanisms 46 and 47 are used.
However, the operation of forming the lateral seal portion and cutting the packaging bag 2 will be described in detail with reference to the drawings.

The horizontal seal mechanism 45 moves the seal bar 51 with respect to the receiving member 52 along the guide shaft 55 in the direction of the arrow C ₁ so that the seal bar 51 and the receiving member 52 are disposed between the facing surfaces. The film 1 is sandwiched laterally. The horizontal seal mechanism 45 heats the seal bar 51 and receives the opposing surface of the seal bar 51 from the member 52.
The film 1 sandwiched between the facing surfaces is heat-sealed in the lateral direction by applying pressure to the facing surfaces.

Subsequently, in the second cutting mechanism 47, as shown in FIG. 17, each side cutter 49 is moved by the air cylinder 82 for the side cutter moving the rod 86 forward.
The blade edge of is protruded from the facing surface of the seal bar 51 in the direction of arrow C _{1 with} respect to the horizontal seal portion, and the corners at both ends of the horizontal seal portion are cut. When cutting the corners at both ends of the horizontal seal portion, the side cutter 49 is attached to both ends of the horizontal seal portion.
The blade edge is gradually abutted from the approximate center of the curved section cut in an arc toward both ends of the curved section to smoothly cut. For this reason, both ends of the horizontal seal portion are cut into smoothly arranged arcs. After cutting the corners at both ends of the lateral seal portion, in the second cutting mechanism 47, the air cylinder 82 for the side cutter retracts the rod 86 so that the cutting edge of each side cutter 49 faces the opposing surface of the seal bar 51. Is returned to the initial state retracted in the direction of arrow C ₂ .

The first cutting mechanism 46 is shown in FIG.
As shown, the air cylinder 73 for the center cutter is locked.
By moving the cord 79 backward,
Mark D ₁Rotate in the direction. The first cutting mechanism 46 rotates
Arm 71 is arrow D₁As it is rotated in the direction
The blade edge of the center cutter 48 is a receiving member for the horizontal seal portion.
Arrow D from the facing surface of 52₁Sideways while protruding in the direction
Slide from one end to the other end of the seal
It The center cutter 48 has an arrow D₁When projected in the direction
In both cases, slide the horizontal seal from one end to the other.
By being cut, it is cut along the horizontal seal part,
The packaging bag is separated from the film 1.

After cutting along the lateral seal portion, the first cutting mechanism 46 causes the center cutter air cylinder 73 to move the rod 79 forward to move the center cutter 48.
The blade edge is returned to the initial state retracted from the facing surface of the receiving member in the direction of arrow C ₁ .

After that, the side cutter 49 operates. The cutting edge of the side cutter 49 is gradually abutted and cut from one end side to the other end side of the horizontal seal portion with respect to the horizontal seal portion to smoothly cut. Therefore, the horizontal seal portion is cut into a smooth straight line.

Further, in the first cutting mechanism 46, since the cutting edge of the center cutter 48 is inclined, the stroke which is the movement amount of the whole center cutter 48 moved with respect to the lateral seal portion is kept relatively small. The decrease in productivity is suppressed.

The filling and packaging machine having the first and second cutting mechanisms 46 and 47 configured as described above is used to
A four-sided seal type packaging bag 2 as shown in 1 is manufactured.
The packaging bag 2 has a vertical seal portion 90 and a horizontal seal portion 91 formed along the outer periphery thereof, and corners located at both ends of the horizontal seal portion 91 are notched. The packaging bag 2 has a horizontal seal portion 9 with respect to a cutting curve L ₁ in which four corners located at both ends of the horizontal seal portion 91 are cut in an arc shape.
Since the dividing straight lines L ₂ cut along 1 are smoothly continuous with each other without being displaced, a neat appearance is ensured.

Finally, the operation of the chip collecting mechanism 160 which is operated in conjunction with the cutting operation of the seal cutting mechanism 16 will be described with reference to the drawings.

First, in the chip collecting mechanism 160, as shown in FIG. 19, the collecting member 161 faces the receiving member 52 at the retracted position where the seal bar 51 and the receiving member 52 are separated from the transport path of the film 1. It has been moved to the collection position. The recovery member 161 is located at the recovery position,
A predetermined gap is secured without contact with the facing surface of the receiving member 52.

Next, as the film 1 is conveyed in the direction of arrow A, the receiving member support 54 that supports the receiving member 52 moves in the direction of arrow C ₂ . As shown in FIGS. 19 and 20, as the receiving member support 54 moves in the direction of arrow C ₂ , the actuating member 166 also moves in the direction of arrow C _2.
The roller 185 is moved in the direction
The driven plate 176 rolls along the sliding surface 177. By the roller 185 rolling along the sliding surface 177,
The driven plate 176 is pressed and pushed down in the arrow A direction by the operating member 166, and the rotation arm 162 rotates in the arrow E ₂ direction around the rotation support shaft 173 against the biasing force of the compression coil spring 164. To be done.

In the chip collecting mechanism 160, the rotating arm 162 rotates in the direction of the arrow E ₂ so that the collecting member 161 is moved from the collecting position to receive the receiving member 52.
And the film 1 is moved to a retracted position separated from the transport path. With the recovery member 161 moved to the retracted position, the seal cutting mechanism 16 cools the film 1 and performs each cutting operation by the center cutter 48 and each side cutter 49, as described above.

Then, after the packaging bag 2 is separated from the film 1, the receiving member support 54 is moved in the direction of arrow C ₁ . When the receiving member support 54 moves in the arrow C ₁ direction, the actuating member 166 also moves in the arrow C ₁ direction, and the roller 185 causes the driven plate 17 of the rotating arm 162 to move.
Roll along the sliding surface 177 of No. 6. Since the roller 185 rolls along the sliding surface 177, the pressing force of the operating member 166 in the direction of arrow A is released.
The rotating arm 162 is rotated in the arrow E ₁ direction about the rotating support shaft 173 by the urging force of the compression coil spring 164.

Then, in the chip collecting mechanism 160, the rotating arm 162 rotates in the direction of arrow E _1, whereby the collecting member 161 is moved from the retracted position to receive the receiving member 52.
Return to the recovery position opposite to. The receiving groove 6 of the receiving member 52 is in the driven state in which the collecting member 161 is moved to the collecting position.
The chips in 5 are sucked from each suction port 170 of the collection member 161, sucked through the suction hose 167, and removed to the suction side. The chip collecting mechanism 160 is operated intermittently in conjunction with the cutting operation of the seal cutting mechanism 16 to repeat the series of collecting operations described above, and repeats the chip collecting operation.

That is, the chip collecting mechanism 160 collects chips from the vicinity of the receiving groove 65 of each side cutter 49 by the collecting member 161 during the transport operation of the film 1, and the seal cutting mechanism 16 performs heat sealing and each cutting. When operating, the recovery member 161 is retracted from the receiving member 52.

Therefore, according to the chip collecting mechanism 160, each time the side cutter 49 cuts, the receiving groove 6
Since the chips are reliably collected from the inside of the device 5, the reliability of the cutting operation by the side cutter 49 is ensured. Further, according to the chip collecting mechanism 160, the operation of the seal cutting mechanism 16 is not hindered, so that the decrease in productivity is minimized.

As described above, the seal cutting device 16 included in the filling and packaging machine includes the first cutting mechanism 46 having the center cutter 48 supported on the receiving member 52 side and the side cutters supported by the seal bar 51. And a second cutting mechanism 47 having a center cutter 48.
And the lateral seal portion 9 cut by each side cutter 49
It is possible to reliably prevent the displacement of the cutting positions of No. 1 from occurring. Therefore, this seal cutting device 16
According to this, the packaging bag 2 can be separated from the film 1 so that the cut portion on the outer periphery of the packaging bag 2 is smoothly continuous.

Further, according to the seal cutting device 16, by providing the center cutter 48 and the side cutters 49 whose blade edges are inclined with respect to the lateral seal portion 91,
Since the resistance at the time of cutting is suppressed, it becomes possible to smoothly cut the cut portion of the lateral seal portion 91 of the packaging bag 2, and the cut portions of the respective seal portions 90, 91 have a good feel and a clean appearance. Can be secured. further,
Since the center cutter 48 and the side cutters 49 have the blade edges inclined, the stroke for cutting can be made relatively small, so that the reduction in productivity can be minimized.

The above-described filling and packaging machine is provided with a set of vertical sealing devices, so that the four-sided sealing type packaging bag 2 is provided.
However, by providing only one of the vertical sealing devices, a three-way sealing type packaging bag can be manufactured.

The above-mentioned seal cutting device 16 has a side cutter for cutting the outer peripheral corners of the packaging bag into an arc shape. However, if necessary, for example, the corners may be linearly cut out. Of course, it may be configured to include a side cutter for cutting.

(Second Embodiment) Next, a filling and packaging machine according to a second embodiment for producing a self-standing packaging bag will be described. Since the carrier device included in the filling and packaging machine according to the second embodiment has the same configuration as the carrier device 11 included in the filling and packaging machine according to the above-described first embodiment, the description will be given with the same reference numerals. Omit it.

As shown in FIG. 22, the filling and packaging machine according to the second embodiment has a bag-making folding device 101 for folding a self-standing packaging bag and a port for supplying a stopper provided in the self-standing packaging bag. The cap supply device 102, the cap welding device 103 for welding and joining the cap to the film 1, and the two vertically opposed sides of the film 1 are heat-sealed to form a top seal part and a bottom seal part. The ceiling sealing device 104 and the bottom sealing device 105 to be formed, the spout cooling device 106 for cooling the spigot welded to the film 1, the filling device 107 for filling the film 1 with the filling material, and the film 1 A seal cutting device 108 is provided for heat sealing in the lateral direction and for cutting along the lateral sealing portion.

Hereinafter, the bag-making folding device 101, the spout supply device 102, the spout welding device 103, the ceiling sealing device 104, and the bottom sealing device 10 along the transport path of the film 1.
5, the plug cooling device 106, the filling device 107, and the seal cutting device 108 will be described in this order.

(7) Bag-making folding device The bag-making folding device 101 has the same basic configuration as the bag-making folding device 12 included in the filling and packaging machine according to the first embodiment described above, and therefore the same members are designated by the same reference numerals. Is attached and the description is omitted.

The bag-folding device 101 includes a width regulating plate 2
A pressing plate 29 and two pressing plates 28 for further folding the region between the two ridges formed on the film 1 inward are disposed below the film 6. The pushing plate 29 is formed in an inverted triangular shape, and is arranged so as to be inclined so that the region between the two ridges of the film 1 is pushed from the outside of the film 1.

Each pressing plate 28 is attached from the inside of the film 2
The two ridges are supported, and the ridges are regulated so as not to be pushed in when the film 1 is pushed by the pushing plate 29. In addition, each pressing plate 28 is inclined such that the interval between the pressing plates 28 becomes gradually smaller according to the inclination of the oblique side of the pressing plate 29.

Film 1 via guide roller 21
Is fed downward by the rotation of the feed roller 22 while being in close contact with the upper surface of the trapezoidal plate 25 and the outer surface of the width regulating plate 26.
The spread of the end portion of the film is suppressed from the outside of the film 1.
As a result, two ridges are formed on the film 1,
The area between these ridges serves as the bottom surface of the self-standing packaging bag. Then, the film 1 that has passed through the pressing plate 29 and each pressing plate 28 is folded into a W-shape at the side portion on the side opposite to the open end to form two peak portions and a valley portion therebetween.

(8) Plug Supply Device As shown in FIG. 22, the plug supply device 102 includes a plug holder 111 for holding a large number of plug assemblies 155, and a plug held by the plug holder 111. Assembly 155
Of the film 1 folded by the bag making and folding device 101 described above, to the site between the open side end portions of the film 1.

Although not shown, the spout holder 111 is fixed to the base by a bracket while being inclined with respect to the horizontal direction, and the cap 155 of the spout assembly 155 is fixed.
The spout assemblies 155 are aligned and held in a row with b facing downward. The stopper holder 111 is provided with a guide groove for guiding the flange portion of the stopper body 155a in order to maintain this posture of the stopper assembly 155. Further, at the lower end of the stopper holder 111, the stopper assembly 15
A support portion for supporting 5 from below is provided.

Although not shown, the plug transfer unit 112 is provided on the base so as to be swingable about a shaft. A finger for gripping the cap 155b of the stopper assembly 155 is provided at the tip of the stopper transfer unit 112. As the finger, a general structure for gripping an article can be applied, but the simplest structure is one that grips by utilizing elastic deformation of the finger itself.

When the cap transfer unit 112 is rotated clockwise to the position of the cap holder 111 by a driving means (not shown) in FIG. 22, the cap assembly 155 at the lowermost position held by the cap holder 111 is fingered. Is gripped by. After that, by rotating the stopper transfer unit 112 counterclockwise, the stopper unit 155 grasped by the finger is pulled out from the stopper holder 111, and along with the rotation of the stopper transfer unit 112, a locus shown by a chain line. Through the film 1 to the site between the open ends of the film 1. On the other hand, when the stopper assembly 155 is pulled out from the lower end of the stopper holder 111, the remaining stopper holders 155 slide down along the guide groove, and the lowermost one is supported on the support portion. In the next operation, the stopper assembly 155 at the lowest position is pulled out from the stopper holder 111.

(9) Spout Welding Device As shown in FIG. 22, the spout welding device 102 is provided at the open end side of the film 1 folded by the bag making folding device 101. Mouth plug welding device 102
Although not shown in the figure, there are two welding heaters which are arranged opposite to each other with the film 1 interposed therebetween and are horizontally opposed to each other by driving means such as an air cylinder. Each of these welding heaters has a built-in heating means such as an electric heater. The spout assembly 155
As shown in FIG. 24, a flange portion is formed at the end of the spout body 155a on the side opposite to the side on which the cap 155b is attached, and the welding heater is closed on the facing surface of each welding heater. A recess that receives the flange portion when combined is formed in a shape that matches the outer shape of the flange portion.

After the stopper assembly 155 is supplied to the portion between the open end sides of the folded film 1 by the above-mentioned stopper supply apparatus 102, the respective heaters for welding are closed to each other, thereby the stopper assembly 155 is closed. The flange portion of 155 and the film 1 are heated while being pressurized, and the plug assembly 155 is heat-welded to the open end portion of the film 1 while being sandwiched between the two portions of the film 1.

(10) Top Sealing Device As shown in FIG. 22, the top sealing device 104 is provided below the spout welding device 103. Although not shown, the ceiling sealing device 104 has a pair of ceiling sealing bars which are arranged to face each other with the film 1 interposed therebetween and are horizontally opposed to each other by driving means such as an air cylinder. The film 1 is configured so that the portion of the film 1 to which the plug assembly 155 is welded can pass.

Each ceiling seal bar has a built-in heating means (not shown) such as an electric heater, and the facing surface of each ceiling seal bar is similar to the welding heater of the plug welding device 103. There is formed a recess for receiving the flange portion of the spout assembly 155 when the ceiling seal bar is closed. Plug assembly 1 welded to film 1
By closing each ceiling seal bar in a state in which 55 is positioned at the same height as the concave portion of each ceiling seal bar, the open end of the film 1 moves in the feeding direction of the film 1 between the ceiling seal bars, that is, The film 1 is heat-sealed along the longitudinal direction.

Here, on the facing surface of each ceiling seal bar, a step region higher than the surroundings is formed so that only the step region presses the film 1 rather than the entire surface. The shape of the top seal portion of the self-standing packaging bag is determined by the shape of the step region. In the present embodiment, the step region has a shape such that the boundary with the portion to be heat-sealed by the seal cutting device 108 is connected by a curved line.

The vertical length of the stepped region of the ceiling seal bar is larger than the feed pitch of the film 1 in one operation cycle of this packaging machine. The upper end of the heat-sealed portion during operation is heat-sealed again.

(11) Bottom Sealing Device As shown in FIG. 22, the bottom sealing device 105 is provided at a position facing the ceiling sealing device 104 with the transport path of the film 1 interposed therebetween. Although not shown, the bottom sealing device 105 has two air cylinders fixed to the frame of the filling and packaging machine, and support members fixed to the rods of the air cylinders, respectively, so that the rods face each other. It has two bottom seal bars supported with their surfaces opposed to each other, and a receiving plate supported by the frame and arranged with its tip portion inserted between the bottom seal bars. The distance between each bottom seal bar and the receiving plate is set so that the bottom sealing bar is pressed against the receiving plate by advancing the rod of the cylinder.

The film 1 folded by the bag-making folding device 101 is sent with the receiving plate inserted between the two crests. Each bottom seal bar has a built-in heating means (not shown) such as an electric heater. While heating each bottom seal bar by these heating means and simultaneously driving each air cylinder to move each bottom seal bar forward, a portion of the film sandwiched between the receiving plate and the bottom seal bar, that is, two The mountains are heat sealed at the same time.

Here, a step area higher than the surroundings is provided on the facing surface of each bottom seal bar, and when the bottom seal bar presses the film 1, this step area is actually the film. Pressurized to 1. The shape of this step region determines the bottom seal portion of the self-supporting packaging bag, that is, the shape of the rib for enabling the packaging bag to stand up. In the present embodiment, in the bottom seal portion, the boundary between the area to be heat-sealed and the area to be filled with the filler forms a concave curve, and the boundary to the area to be heat-sealed by the seal cutting device 108 is a curve. It has a shape that connects. Further, the length of the step region in the vertical direction is larger than the feed pitch of the film 1 described above, and at the lower end portion of the step region, the upper end portion of the portion heat-sealed in the previous operation is heat-sealed again. It

(12) Spigot cooling device Although not shown, the spigot cooling device 106 is arranged in a pair so as to face each other with the film 1 interposed therebetween, and is horizontally opposed by a driving means such as an air cylinder. It has a pressure member. Each pressurizing member is formed of a metal having a relatively high thermal conductivity, and each pressurizing member is closed on the opposing surface of each pressurizing member in the same manner as the welding heater of the plug welding device 103. A recess is formed to receive the flange portion of the spout assembly 155 when opened. By sandwiching the portion of the film 1 to which the cap assembly 155 is welded with such a pressing member, the heat given by the cap welding device 103 and the ceiling sealing device 104 is transferred to the pressing member, and as a result, The portion where the plug assembly 155 is welded is cooled.

Since the temperature of the portion to which the spout assembly 155 is welded does not easily drop after it is welded, it is not preferable to wait for the natural cooling to carry out the next step from the viewpoint of production efficiency.
Therefore, after the film 1 is heat-sealed by the ceiling sealing device 104, the portion where the plug assembly 155 is welded is forcibly cooled by the plug cooling device 106,
It is possible to improve the production efficiency of a self-supporting packaging bag with a spout.

(13) Filling device Since the filling device 107 has the same basic structure as the filling device 15 included in the filling and packaging machine according to the first embodiment described above,
The same reference numerals are given and the description is omitted. The filling device 107 is
As shown in FIG. 22, as compared with the pair of squeegee rollers 42 included in the filling device 15, in order to avoid contact with the plug assembly 155 welded to the film 1, the pair of axial lengths is shortened. It is equipped with a blue roller 120.

(14) Seal Cutting Device Since the seal cutting device 108 has the same basic structure as the seal cutting device 16 included in the filling and packaging machine according to the first embodiment described above, the same members are designated by the same reference numerals. And the description is omitted.

In this seal cutting device 108, the seal cutting device 16 described above is provided with a pair of side cutters 49. However, as shown in FIG. 23, only the corner of the film 1 on the side of the ceiling seal portion is cut. It is provided with only the side cutter 121. This side cutter 121 is the second cutter mentioned above.
It is formed in the same shape as the side cutter 49 of the cutting mechanism 47 and is driven by an air cylinder 82 for the side cutter.

The seal cutting device 106 forms a side seal portion of the self-standing packaging bag by heat-sealing the film 1 between the seal bar 51 and the receiving member 52 in the lateral direction.

According to the filling and packaging machine of the second embodiment configured as described above, the self-standing packaging bag 3 as shown in FIG. 24, for example, is manufactured. The packaging bag 3 has a ceiling seal portion 15 to which a spout assembly 155 is welded over the outer circumference.
1, the side seal part 152 and the bottom seal part 153 are formed respectively, and the corners located at both ends of the top seal part 151 are notched. Further, in this packaging bag 3, the cutting line L ₃ cut along the side seal portion 152 is divided by the dividing line L ₄ cut along the side seal portion 152 with respect to the cutting curve L ₃ formed by cutting the two corners located at both ends of the ceiling seal portion 151 in an arc shape. Since they are smoothly connected to each other without being displaced, a neat appearance is well secured.

Although the packaging bag made of a resin film is applied to each of the above-described embodiments, for example, a packaging for retort food made of a multilayer laminated film made of polyester, aluminum foil and polyethylene in order from the outside. Bags may be applied. Further, as the film, a tubular film may be supplied from the film supply device.

[0119]

As described above, according to the packaging bag cutting apparatus of the present invention, by including the first cutting mechanism having the cutting cutter and the second cutting mechanism having the corner cutter, It is possible to reliably prevent the positional deviation from occurring at each cutting position of the seal portion cut by the cutting cutter and the corner cutter. Therefore, according to this packaging bag cutting device, the packaging bag can be separated from the film so that the cut points on the outer periphery of the packaging bag are smoothly continuous.

Further, according to the packaging bag cutting apparatus of the present invention, the cutting portion having the cutting edge inclined with respect to the sealing portion is provided to smoothly cut the cutting portion of the sealing portion of the packaging bag. This makes it possible to improve the feel of the cut portion of the seal portion and ensure a clean appearance. Further, according to the cutting cutter whose blade edge is inclined, it is possible to make the stroke of the entire cutting cutter relatively small, and thus it is possible to minimize the decrease in productivity.

Similarly, according to the packaging bag cutting apparatus of the present invention, the cutting portion of the sealing portion of the packaging bag is smoothly cut by providing the corner cutter whose blade edge is inclined with respect to the sealing portion. It is possible to improve the feel of the cut portion of the seal portion and ensure a clean appearance. Further, according to the corner cutter having the slanted cutting edge, the stroke of the whole corner cutter can be made relatively small, so that the decrease in productivity can be minimized.

The packaging bag cutting device according to the present invention is
By providing the collecting mechanism that collects the chips cut from the corner of the seal portion by the second cutting mechanism, the reliability of the cutting operation by the corner cutter can be improved.

The packaging bag cutting device according to the present invention is
The recovery mechanism has a recovery member that recovers the chips from one of the opposing surfaces of the pair of holding bodies, and the first cutting mechanism moves integrally with the movement of the one holding body to operate the recovery member. The recovery member has an operating member, and the recovery member is moved to a recovery position facing the facing surface of the one sandwiching member by the operating member when the pair of sandwiching members is separated from the film path, and the cutting cutter separates the sealing portion. When cutting, by moving to a retracted position separated from the facing surface of one of the sandwiching bodies, it is possible to suppress a decrease in productivity due to a chip collecting operation.

[Brief description of drawings]

FIG. 1 is a front view schematically showing a packaging and filling machine according to a first embodiment of the present invention.

FIG. 2 is a side view schematically showing the packaging and filling machine.

FIG. 3 is a perspective view showing a seal cutting device included in the packaging and filling machine.

FIG. 4 is a plan view showing an initial state of the first cutting mechanism.

FIG. 5 is a plan view showing a state in which the center cutter is projected by the first cutting mechanism.

FIG. 6 is a plan view showing an initial state of the second cutting mechanism.

FIG. 7 is a plan view showing a state where the second cutting mechanism projects a side cutter.

FIG. 8 is a front view showing the side cutter.

FIG. 9 is a cross-sectional view showing the side cutter.

FIG. 10 is a perspective view showing a chip collecting mechanism.

FIG. 11 is a plan view showing the chip recovery mechanism.

FIG. 12 is a plan view showing a main part of a rotating arm.

FIG. 13 is a front view showing a recovery member.

FIG. 14 is a front view showing a relative position between a suction port of the recovery member and a receiving groove of each side cutter.

FIG. 15 is a front view showing an operating member.

FIG. 16 is a schematic diagram shown for explaining the operation of the filling and packaging machine.

FIG. 17 is a plan view showing a state in which both corners of the seal portion are cut in the seal cutting device.

FIG. 18 is a plan view showing a state of being cut along a seal portion in the seal cutting device.

FIG. 19 is a side view showing a state where the recovery member has moved to a recovery position.

FIG. 20 is a side view showing a state where the recovery member has moved to a retracted position.

FIG. 21 is a perspective view showing an example of a packaging bag.

FIG. 22 is a side view schematically showing the packaging and filling machine according to the second embodiment of the present invention.

FIG. 23 is a front view showing a state in which one end of the seal portion is cut by another seal cutting device.

FIG. 24 is a perspective view showing another packaging bag.

FIG. 25 is a schematic diagram for explaining the positional deviation between the cutting positions of the corner cutter and the cutting cutter.

[Explanation of symbols]

1 film 1a Empty filling section 2 Four-sided seal type packaging bag 3 Independent packaging bags 5 filling 11 Conveyor 12 Bag-making folding device 13, 14 Vertical sealing device 15 Filling device 16 Seal cutting device 45 Horizontal seal mechanism 46 First cutting mechanism 47 Second cutting mechanism 48 center cutter 49 side cutter 51 seal bar 52 Receiving member 53 Support for seal bar 54 Support for receiving member 55 Guide shaft 61 Guide groove 62 spindle 63 guide groove 64,65 receiving groove 71 rotating arm 72 Support arm 73 Air Cylinder for Center Cutter 76, 77 rotation support shaft 81 Cutter support member 82 Air Cylinder for Side Cutter 90 Vertical seal part 91 Horizontal seal part 160 Chip recovery device 161 Collection member 162 rotating arm 163 supporting substrate 164 Compression coil spring 166 Actuating member 167 Suction hose 170 Suction port 173 Rotating support shaft 175 bias plate 176 Driven plate 177 sliding surface 179 support arm 181 holding plate 185 Laura

Claims (15)

[Claims] 1. A packaging bag cutting device, which is provided on a path of a film of a filling and packaging machine, in which a heat-sealed sealing portion is cut and separated into individual packaging bags, wherein the sealing portion extends over the sealing portion. A first holding member having a pair of holding members for holding the sealing unit; and a cutting cutter for cutting the packaging bag by cutting along the sealing unit held by the holding unit.
And a second cutting mechanism having a corner cutter for cutting at least one corner of the seal portion held by the holding body, wherein the first cutting mechanism is the first cutting mechanism. A packaging bag cutting device, which is provided at a position corresponding to the seal portion cut by the second cutting mechanism. 2. The packaging bag cutting device according to claim 1, wherein one of the pair of holding bodies is provided with the cutting cutter, and the other is provided with the corner cutter. 3. The first cutting mechanism according to claim 1, further comprising a cutter moving unit that protrudes the cutting cutter with respect to the seal portion and slides the cutting cutter along the seal portion. Device for cutting packaging bags. 4. The cutting device for a packaging bag according to claim 3, wherein the cutter moving means has a parallel link mechanism. 5. The cutting cutter is configured such that, when the cutting cutter is projected to the seal portion, the cutting edge is gradually abutted from the one end side to the other end side of the seal portion with respect to the seal portion. 4. The packaging bag cutting device according to claim 3, wherein the packaging bag is inclined. 6. The packaging bag cutting device according to claim 5, wherein the corner cutter is provided so as to be able to advance and retreat from the facing surface of the holding body with respect to the seal portion. 7. The packaging bag cutting device according to claim 1, wherein one of the pair of holding bodies is provided with a sealing means for thermally sealing the sealing portion. 8. The packaging bag cutting device according to claim 7, wherein the sealing means is a heating means for heat-sealing the sealing portion. 9. The corner cutter has a cutting edge with respect to the seal portion when the cutter is projected from the seal portion.
The cutting device for a packaging bag according to claim 1, wherein the cutting device is inclined so that the straight line or the curved section to be cut is gradually abutted from both ends thereof. 10. The cutting device for a packaging bag according to claim 9, wherein the corner cutter cuts an end portion of the sealing portion into an arc shape. 11. The cutting apparatus for a packaging bag according to claim 1, wherein the packaging bag has a quadrangular shape in which four sides of the outer circumference are heat-sealed. 12. The packaging bag cutting device according to claim 1, wherein the packaging bag is a self-standing type in which one side end of an outer periphery is a bottom to be self-supporting. 13. The packaging bag cutting device according to claim 1, further comprising a collecting mechanism that collects chips cut from the corners of the seal portion by the second cutting mechanism. 14. The recovery mechanism includes a recovery member for recovering chips from one of the facing surfaces of the pair of sandwiching bodies, and the first cutting mechanism is integrated with the movement of the one sandwiching body. To the opposite surface of the one sandwiching body by the operating member when the pair of sandwiching bodies is separated from the film path. 14. The packaging bag cutting device according to claim 13, wherein the packaging bag is moved to a recovery position, and when the cutting cutter cuts the seal portion, the cutting bag is moved to a retracted position separated from the facing surface of the one sandwiching body. 15. The device for cutting a packaging bag according to claim 13, wherein the recovery mechanism has a suction means for sucking and removing chips.