JP2000238716A - Method and device for packaging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging method and a device by which a plurality of works can be stably packaged. SOLUTION: A plurality of works 14 are inserted in parallel, in a space between two sheets of moisture-proof paper 12A and 12B which are superposed in a cross-seal section 20, and the front sides of the works 14 are totally sealed, and at the same time, the rear sides are dot-sealed. Then, in a pressure-reduced seal section 62, individually packaged works 14 are placed in an evacuation chamber 68, and air in the packaged body is removed through the dot-sealed section. When the air inside is removed, the dot-sealed section is totally sealed, and the works 14 are hermetically sealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method and apparatus, and more particularly to a packaging method and apparatus for simultaneously packaging a plurality of objects to be packaged using a hot-melt sheet material.

[0002]

2. Description of the Related Art As an apparatus for packaging a work (object to be packaged) using a hot-melt sheet material, there is an apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 5-16914. This packaging apparatus wraps a work with a sheet material according to the following procedure. First,
Two strip-shaped hot-melt sheet materials are overlapped, and one end is sealed in the width direction of the sheet material. Next, a plurality of workpieces are inserted at a certain interval between the two sheet materials, one ends of which are sealed. Next, the sheet material at the rear end of the work is point-sealed (perforated seal intermittently) in the width direction. Then, the point-sealed portion is cut. As a result, the sheet material is formed in a cylindrical shape, and the work is accommodated therein. Next, both sides of each work are sealed. Thereby, the periphery of each work is sealed (a point seal is provided on the rear end side of the work). next,
The work wrapped in the sheet material is put in a vacuum chamber. With respect to the work placed in the vacuum chamber, the air inside the sheet material is evacuated from the point-sealed portion, and the sheet material adheres to the work. When the air has completely escaped, the point-sealed portion is completely sealed. As a result, the works are completely sealed in the sheet material, and finally the adjacent works are cut and separated from each other. As described above,
Multiple workpieces are wrapped simultaneously in sheet material.

[0003]

However, in the packaging apparatus disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 5-16914,
Since air is released before cutting the sheet material for each work, wrinkles enter between adjacent works,
At the same time, there is a disadvantage that the dimension between the respective works becomes short. As a result, there has been a problem that the seal portion cannot be cut accurately and stable packaging cannot be performed.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a packaging method and apparatus capable of stably packaging a plurality of works.

[0005]

The invention according to claim 1 is
In order to achieve the above object, a full sealing step of completely sealing the leading edge portions of two superposed strip-shaped hot-melt sheet materials in the width direction, and after the full sealing step, the two sheet materials are sealed. A packaged object insertion step of inserting a plurality of packaged objects in parallel along the width direction of the sheet material therebetween, and after the packaged object insertion step, a sheet material at a rear end portion of the packaged material is removed. A partial sealing step of partially sealing over the width direction, a cutting step of cutting and separating the sheet material on the rear end side from the partial sealing portion across the width direction after the partial sealing step, and after the cutting step, An isolation step of completely sealing the two sheets of material wrapped in the longitudinal direction orthogonal to the width direction, and isolating each packaged object for each packaged object in the entire seal portion; After the process, before A separation step of cutting the entire seal portion formed in a longitudinal direction, separating the sheet material wrapped objects to be packaged on each of said articles to be packaged, after the separation step,
The pressure-reducing step of putting the sheet material separated for each of the packaged objects into a decompression chamber and sucking the air inside each sheet material from the partial seal portion of each sheet material, A packaging step of completely sealing the partial seal portion of the sheet material from which the air has been sucked and packaging the article to be packaged,
It is characterized by consisting of.

According to the present invention, an article to be packaged is wrapped in a sheet according to the following procedure. First, the leading edges of the two superposed sheets are completely sealed. Next, 2
A plurality of items to be packaged are inserted between the sheet materials in a state of being arranged in parallel. Next, the sheet material at the rear end of the package is partially sealed. Next, the sheet material on the rear end side of the partial seal portion is cut. As a result, the tubular sheet material surrounding the article to be packaged is separated from the two sheet materials. Next, the two sheet materials enclosing each of the items to be packaged are completely sealed in the longitudinal direction orthogonal to the width direction. Thereby, each packaged object is isolated via the seal portion. Next, the seal portions on both sides of each packaged object are cut in the longitudinal direction. As a result, the sheet material wrapping the packaged object is separated for each packaged object. Next, the sheet material separated for each of the packages is placed in a decompression chamber. Each sheet material received in the decompression chamber is evacuated from the partially-sealed portion and closely adheres to the package. Next, the partially sealed portion of the deflated sheet material is completely sealed. Thereby, the packaging of the article to be packaged is completed. As described above, according to the present invention, after separating the sheet material wrapping the packaged material for each packaged material, air is released, so that wrinkles enter between adjacent works, or Accordingly, there is no drawback that the dimensions between the respective works are shortened and cutting cannot be performed accurately, and stable packaging can be performed.

According to a second aspect of the present invention, in order to achieve the above object, a first sealing method is provided in which the leading edge portions of two superposed strip-shaped hot-melt sheet materials are completely sealed in the width direction.
And a package insertion step of inserting a plurality of packages in parallel between the two sheet materials along the width direction of the sheet material after the first sealing process and the first total sealing process. And a partial sealing step of partially sealing the sheet material at the rear end portion of the packaged material in the width direction after the packaged material inserting step; and after the partial sealing step, A second full sealing step of completely sealing the end side sheet material in the width direction, and a sheet material between the partial sealing portion of the sheet material and the second full sealing portion after the second full sealing process A cutting step of cutting and separating the sheet material in the width direction, and after the cutting step, completely seals the two sheet materials wrapped with the plurality of items to be packed in the longitudinal direction orthogonal to the width direction. With each packaged item An isolating step of isolating each object, and a separating step of cutting the entire sealing portion formed in the longitudinal direction after the isolating step and separating the sheet material wrapping the to-be-packaged for each of the to-be-packaged objects And after the separating step,
A pressure reduction step of putting the sheet material separated for each packaged object into a decompression chamber and sucking air inside each sheet material from a partial seal portion of each sheet material, A packaging step of completely sealing the partial seal portion of the sheet material from which the air has been sucked and packaging the article to be packaged,
In the case where the first packaging is performed and the next packaging is continuously performed, the part completely sealed in the second full sealing step is used as the entire sealing portion of the leading edge portion, and the packaging is performed from the packaging object insertion step. It is characterized in that the process is repeated until the process.

According to the present invention, an article to be packaged is wrapped in a sheet according to the following procedure. First, the leading edges of the two superposed sheets are completely sealed. next,
A plurality of articles to be packaged are inserted between two sheet materials in a state of being arranged in parallel. Next, the sheet material at the rear end of the package is partially sealed. Next, the sheet material on the rear end side from the partial sealing portion of the sheet material is completely sealed over the width direction. Next, the sheet material between the partial seal portion and the entire seal portion of the sheet material is cut in the width direction. As a result, the tubular sheet material surrounding the article to be packaged is separated from the two sheet materials. Next, each packaged item is wrapped 2
The sheet materials are completely sealed in the longitudinal direction orthogonal to the width direction. Thereby, each packaged object is isolated via the seal portion. Next, the seal portions on both sides of each packaged object are cut in the longitudinal direction. As a result, the sheet material wrapping the packages is separated for each package. Next, the sheet material separated for each of the packages is placed in a decompression chamber. Each sheet material received in the decompression chamber is evacuated from the partially-sealed portion and closely adheres to the package. Next, the partially sealed portion of the deflated sheet material is completely sealed. Thus, the packaging of the first package is completed. When the next packaging is to be performed continuously, the part that has been completely sealed in the above process is used as the entire sealing portion at the leading edge, and the process is repeated from the process. As described above, according to the present invention, it is possible to continuously package the items to be packaged.

According to a third aspect of the present invention, in order to achieve the above object, in the first or second aspect of the present invention, the isolating step includes the step of sequentially arranging the sheet material between the respective packages. It is characterized in that it is completely sealed and separated for each package. ADVANTAGE OF THE INVENTION According to this invention, the sheet material between each to-be-packaged material can be disperse | distributed by sequentially sealing all the sheet materials, and generation | occurrence | production of a wrinkle etc. can be suppressed effectively. .

The invention according to claim 4 is characterized in that in order to achieve the object, the partial sealing step and the second full sealing step are performed simultaneously. According to the present invention, efficient processing can be performed by simultaneously performing the partial sealing step and the second full sealing step. According to a fifth aspect of the present invention, in order to achieve the above object, the first sealing means for completely sealing the leading edge portions of the two superposed hot-melt sheet materials in the width direction, and the leading edge. A packaged object insertion means for inserting a plurality of packaged objects in parallel along the width direction of the sheet material between two sheet materials whose parts are completely sealed, and inserted between the sheet materials; A second sealing means for partially sealing the sheet material at the rear end portion of the packaged material in the width direction; and a first sealing means for cutting and separating the sheet material on the rear end side from the partial seal portion of the sheet material in the width direction. The cutting means and the two sheet materials enclosing the plurality of items to be packaged are completely sealed in the longitudinal direction orthogonal to the width direction, and the packages are separated by the entire sealing portion. Third sealing means, formed in the longitudinal direction A second cutting means for cutting all the sealed portions, and separating the sheet material wrapping the packaged object for each of the packaged items, and receiving the sheet material separated for each packaged item. A decompression chamber for sucking air inside each sheet material from a partial seal portion of each sheet material, and a fourth mode for completely sealing the partial seal portion of the sheet material in the decompression chamber and packaging the article to be packaged. And sealing means.

According to the present invention, an article to be packaged is wrapped in a sheet material according to the following procedure. First, the leading edges of the two sheet materials superposed by the first sealing means are completely sealed. Next, a plurality of objects to be packaged are inserted in a state of being arranged in parallel between two sheet materials by the object to be packaged. Next, the sheet material at the rear end portion of the article to be packaged is partially sealed by the second sealing means. Next, the sheet material on the rear end side of the partial seal portion is cut by the first cutting means. As a result, the tubular sheet material surrounding the article to be packaged is separated from the two sheet materials. Next, the sheet material on both sides of each packaged object is completely sealed in the longitudinal direction by the third sealing means. Thereby, each packaged object is isolated inside one sheet material via the seal portion. Next, the seal portions on both sides of each packaged object are cut in the longitudinal direction by the second cutting means. As a result, the sheet material wrapping the packages is separated for each package. Next, the sheet material separated for each of the packages is received in the decompression chamber. Each sheet material received in the decompression chamber is evacuated from the partially-sealed portion and closely adheres to the package. Next, the partially-sealed portion of the deflated sheet material is completely sealed by the fourth sealing means. Thereby, the packaging of the article to be packaged is completed. As described above, according to the present invention, after separating the sheet material wrapping the packaged material for each packaged material, air is released, so that wrinkles enter between adjacent works, or Accordingly, there is no drawback that the dimensions between the respective works are shortened and cutting cannot be performed accurately, and stable packaging can be performed.

According to a sixth aspect of the present invention, in order to achieve the above object, in the fifth aspect of the present invention, the third sealing means sequentially arranges a sheet material between the respective packages. It is characterized in that it is completely sealed to isolate each packaged object. ADVANTAGE OF THE INVENTION According to this invention, the sheet material between each to-be-packaged material can be disperse | distributed by sequentially sealing all the sheet materials, and generation | occurrence | production of a wrinkle etc. can be suppressed effectively. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the packaging method and apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an overall configuration of an embodiment of a packaging device according to the present invention. As shown in the figure, the packaging device 10 of the present embodiment includes two moisture-proof papers 12A and 12B.
(Three in the packaging device 10 of the present embodiment)
(For example, a photographic photosensitive material in the form of a sheet, hereinafter referred to as a "work") 14, 14, 14 individually and simultaneously.

Each of the moisture-proof papers 12A and 12B has a layer of a hot-melt resin, is formed in a belt shape, and each has a winding shaft 1A.
It is wound around 6A and 16B. Each winding shaft 16A, 16
An output shaft of a motor (not shown) is connected to B, and the motor is driven synchronously, so that the winding shaft 16A,
Moisture-proof papers 12A and 12B are fed out from 16B. Moisture-proof paper 12A, 12 unwound from winding shafts 16A, 16B
B are rollers 18A, 18A,...
(Only a part is shown), and is guided by the cross seal portion 20.

In the cross seal portion 20, a cross sealer 22 and a cross seal cutter 24 are disposed at predetermined intervals in the vertical direction. The two sheets of moisture-proof paper 12A,
12B is introduced between the cross sealer 22 and the cross seal cutter 24 in a state of being overlapped with each other. The cross seal cutter 24 is provided so as to be able to move up and down by a lifting means (not shown). When the cross seal cutter 24 moves up, two sheets of moisture-proof paper introduced between the cross sealer 22 and the cross seal cutter 24 are provided. 12A and 12B are crimped over the width direction. Then, the crimped portion is completely sealed by the cross sealer 22.

Here, the cross sealer 22 simultaneously performs two seals over the width direction of the moisture-proof papers 12A and 12B. The two seals are formed parallel to each other at a predetermined interval. The tip end of the moisture-proof paper 12A, 12B is a point seal (partial seal), and the other side is
All seals (seals linear in the width direction) are provided. The cross seal cutter 24 cuts the moisture-proof papers 12A and 12B in the width direction between two seals formed by the cross sealer 22.

The cross sealer 22 is provided so as to be vertically movable by a lifting mechanism (not shown), and is formed so that the height can be switched according to the thickness of the work 14. A work supply unit 26 is installed at a position before the cross seal unit 20 (upstream in the transport direction of the moisture-proof papers 12A and 12B). This work supply unit 26
Supplies the workpieces 14, 14, and 14
8 and a pusher 30.

The table 28 is disposed horizontally,
On the table 28, the works 14, 14, 14 are placed in parallel at a predetermined interval. The pusher 30
The table 28 is slidably provided on the table 28 along the transport direction of the moisture-proof papers 12A and 12B, and moves back and forth by being driven by driving means (not shown). The workpieces 14, 14, 14 placed on the table 28 are pushed by the pusher 30 to move on the table 28 toward the cross seal portion 20, and the two moistureproof papers 12 </ b> A, 12 </ b> B Inserted between.

The rear position of the cross seal portion 20 (moisture proof paper 1)
A transport section 32 is provided downstream of the transport direction of 2A and 12B. The transport unit 32 includes the wrapping conveyor 3
4 and a moisture-proof paper feeding device 36. The wrapping conveyor 34 is provided with the moisture-proof paper 12 into which the work 14 is inserted.
This is a device for transporting A and 12B to a side seal portion 42 described later.

On the other hand, the moisture-proof paper feeding device 36 is a device for feeding the moisture-proof papers 12A and 12B, whose leading edges are sealed, in a longitudinal direction orthogonal to the width direction. As shown in FIG. And a pair of ear grippers 40, 40. The pair of stoppers 38, 38 are both formed in an L-shape at the tip, and are disposed on both sides of the moisture-proof papers 12A, 12B. The stoppers 38, 38 are arranged on the front side of the cross sealer 22, and are provided with the two moisture-proof papers 12A, 12B.
Is sealed by the cross sealer 22,
It is inserted and arranged between the two sealed moisture-proof papers 12A and 12B (the state shown in FIG. 2).

A pair of ear grippers 40, 40 are also disposed on both sides of the moisture-proof papers 12A, 12B, similarly to the stoppers 38, 38. The ear grippers 40, 40
The moisture-proof paper 12 is formed in a rectangular plate shape.
A and 12B are slidably provided in the width direction. Then, they are provided so as to be able to move forward and backward by being driven by a forward and backward moving mechanism (not shown). The ear grippers 40, 40 are slidably provided along the longitudinal direction of the moisture-proof papers 12A, 12B, and are provided to be movable back and forth by being driven by a moving mechanism (not shown).

The moisture-proof paper feeding device 36 is configured as described above, and is provided with the moisture-proof paper 12A,
2B is delivered as follows. That is, when the leading edge portions of the two moisture-proof papers 12A and 12B are sealed by the cross sealer 22, as shown in FIG.
Stoppers 38, 38 are inserted and arranged between the two sealed moisture-proof papers 12A, 12B. Then, the moisture-proof papers 12A, 12B into which the stoppers 38, 38 are inserted.
, A pair of ear grippers 40 located at a predetermined origin position move in a direction approaching each other. As a result,
As shown by a two-dot dashed line in FIG.
The two edges of the moisture-proof paper 1 are overlapped with the top edges 0, 40.
It is inserted between 2A and 12B. Ear grippers 40, 4
0 is then advanced along the longitudinal direction of the moisture-proof paper 12A, 12B, so that the advancing ear grippers 40, 40
The seals of the moisture-proof papers 12A and 12B engage with the moisture-proof paper 1
2A and 12B are withdrawn by a predetermined amount.

By the way, the cross seal section 20, the work supply section 26, and the transport section 32 are configured as described above.
Temporary packaging is as follows. That is, first, Table 2
The workpieces 14, 14, 14 are placed in parallel on 8.
Next, the two sheets of moisture-proof paper 1 introduced into the cross seal portion 20
The end edges of 2A and 12B are completely sealed in the width direction by the cross sealer 22. Next, the pusher 30 moves forward and pushes the workpieces 14, 14, 14 while keeping them in parallel. The pushed work 14, 14, 14 is the moisture-proof paper 1.
When reaching the seal portion of 2A, 12B, the winding shaft 16A,
The motor, the wrapping conveyor 34 and the ear grippers 40, 40 connected to the 16B are driven in synchronization with the pusher 30, and as a result, the workpieces 14, 14, 14 are inserted between the two moisture-proof papers 12A, 12B. You.

When the synchronously driven ear grippers 40, 40 reach a predetermined end position, the wrapping conveyor 34
And the pusher 30 is stopped, and as a result, the two sheets of moisture-proof paper 12
A, inserted between 12B. Then, the work 14, 1
The cross sealer 22 is located at the rear end positions of 4, 14.
The pusher 30, which has pressed the workpieces 14, 14, 14, then retracts and returns to the home position.

On the other hand, after the retraction of the pusher 30, the cross sealer 22 seals the two moisture-proof papers 12A, 12B at the rear ends of the works 14, 14, 14 in the width direction. here,
These two seals are, as described above, the moisture-proof papers 12A and 12A.
The front end side (work side) of 2B is a point seal, and the rear end side (work supply section side) is an entire seal. The space between the two seals is cut by the cross seal cutter 24 in the width direction. As a result, the workpieces 14, 14,
The moisture-proof paper 12A, 12B wrapping 14 is formed in a cylindrical shape,
It is separated from the strip-shaped moisture-proof papers 12A and 12B. On the other hand, the strip-shaped moisture-proof papers 12A and 12B are completely sealed at the leading edge, and the sealed portions are locked to the stoppers 38 and 38.

In the above steps, the works 14, 14, 14 are temporarily wrapped in the moisture-proof papers 12A, 12B. Then, after cutting by the cross seal cutter 24, the wrapping conveyor 34 is driven again, and the separated tubular moisture-proof papers 12A, 12A are separated.
B is conveyed to the side seal portion 42 described below. The cylindrical moisture-proof paper 12A, 12B in which the workpieces 14, 14, 14 are temporarily wrapped as described above is hereinafter referred to as a "primary wrapper 4".
4 ”.

A side seal section 42 is provided at a position subsequent to the transport section 32. The side seal portion 42
The both sides of the work of the primary package 44 are completely sealed in the longitudinal direction, and the sealed part is cut to separate the works 14, 14, and 14. As shown in FIG. 1, the side seal portion 42 includes four suction conveyors 46, 46,.
48,... And four side seal cutters 50, 5
0,...

The four suction conveyors 46, 46,...
Are arranged in parallel immediately after the wrapping conveyor 34. The primary package 44 transported by the wrapping conveyor 34 is transferred to the suction conveyor 46 and transported to a predetermined side seal position. The four side sealers 48, 48, ... and the side seal cutters 50, 50, ... are arranged at predetermined intervals in the vertical direction, and are arranged in parallel in the width direction of the primary package 44. . The primary package 44 transported by the suction conveyor 46 is provided with the four side sealers 4.
8, 48,... And the side seal cutters 50, 50,. The side seal cutter 50 is provided so as to be able to move up and down by elevating means (not shown). When the side seal cutter 50 rises, the primary package 44 positioned between the side sealer 48 and the side seal cutter 48 is moved.
Both sides of each of the workpieces 14, 14, 14 are pressed.
Then, the crimped portion of the primary package 44 is entirely sealed by the side sealer 48. The side seal cutter 50 cuts the central portion of the portion sealed by the side sealer 48 in the longitudinal direction. As a result, the works 14, 14, 14 are individually packaged.

Although not shown, a work holding plate that can move up and down is provided above the suction conveyor 46. When the work is pressed, the work holding plate presses the upper part of the work to press the work. Is fixed. Further, the four side sealers 48 and the side seal cutters 50 are provided so as to be movable in the width direction so as to correspond to the work size, and are configured so that the distance between them can be adjusted. The side sealer 48 is formed so that the position in the height direction can be switched so as to correspond to the thickness of the work 14.

The four side sealers 48 seal both sides of the workpieces 14, 14, and 14 housed in the primary package 44. At this time, the four side sealers 48 may be simultaneously sealed. It is more preferable that the sheets 12A and 12B are sequentially sealed so that the tension of the sheets 12A and 12B becomes equal, and the sheets 12A and 12B are sequentially sealed. The state in which the workpieces 14, 14, 14 are individually packaged from the primary package 44 as described above is hereinafter referred to as "secondary package 52, 52, 52". In this state, in the secondary package 52, all three sides of the four peripheral sides are completely sealed, and only one side (a half-bidirectional rear side) is a point seal. Therefore, it is possible to circulate from the point seal portion to the internal air.

A distributing section 54 is provided at a position subsequent to the side seal section 42. The distribution unit 54 separates and collects the ears (pieces on both sides of the primary package 44 generated at the time of cutting) from the secondary packages 52, 52, 52 individually packaged in the side seal unit 42. This sorting unit 5
4 is a distribution suction roll 56 and an ear chopper 5
8 and an ear dust discharging conveyor 60.

The distribution suction roll 56 is disposed immediately after the suction conveyor 46, and is driven by a motor (not shown) to rotate. The ear cut by the side seal portion 42 is separated from the secondary packaging bodies 52, 52, 52 by the distribution suction roll 56 and guided to the ear chopper 58. At the time of this distribution, a stable distribution is possible by installing a guide plate near the distribution suction roll 56, or installing an air nozzle above and injecting compressed air to the ears.

The ear chopper 58 is provided below the distribution suction roll 56, and the secondary packaging bodies 52, 52, 52 are provided by the distribution suction roll 56.
Chop the ears separated from. Ear dust discharge conveyor 60
Is disposed below the ear chopper 58, and discharges the debris cut by the ear chopper 58 to the outside of the machine.

A pressure reducing seal portion 62 is provided at a position subsequent to the distributing portion 54. The pressure reducing seal portion 62
The air is evacuated from the interior of the secondary packages 52, 52, and 52, and the point seal portions are completely sealed so that the secondary packages 52, 52, and 52 are sealed.
2, 52 are completely sealed. The pressure reducing seal part 62 includes a direction changing conveyor 64, a pressure reducing packaging conveyor 66, a pressure reducing chamber 68, and a pressure reducing seal device 70.

The direction changing conveyor 64 is provided immediately after the sorting section 54, and is provided with the secondary packages 52, 52, 5 and 5 conveyed by the suction conveyor 46.
2, while maintaining the parallel state, the transport direction is changed by 90 °, and the transport is performed in the horizontal direction. The decompression packaging conveyor 66 is disposed immediately after the direction change conveyor 64, receives the secondary packages 52, 52, and 52 conveyed by the direction change conveyor 64, and conveys the secondary packages 52, 52, and 52 to a predetermined decompression seal position. .

The decompression chamber 68 is installed above the decompression packaging conveyor 66, and is provided to be vertically movable by a lifting mechanism (not shown). When the secondary packages 52, 52, 52 are conveyed to the predetermined pressure reducing seal position by the pressure reducing packaging conveyor 64, the secondary packages 52, 52, 52 are lowered and closed around the secondary packages 52, 52, 52 to decompress the inside. . The secondary packages 52, 52, 5 in the decompression chamber 68
2 is evacuated from the point seal portion by depressurization, and as a result, it comes into close contact with the works 14, 14, 14.

The decompression sealing device 70 is installed at a predetermined decompression sealing position, and seals all the point seal portions of the secondary packages 52, 52, 52 from which air has been vented. The decompression sealing device 70 includes a decompression sealer 70A and a decompression seal receiver 70B disposed at predetermined intervals in the vertical direction.
It is composed of In the secondary package 52, 52, 52 conveyed by the vacuum packaging conveyor 66, the point seal portion is located between the vacuum sealer 70A and the vacuum seal receiver 70B at the vacuum seal position. The reduced pressure seal receiver 70B rises toward the point seal portion of each of the secondary packages 52, 52, 52 located in the reduced pressure seal receiver 70B, and presses the point seal portion with the reduced pressure sealer 70A. Then, the pressure-bonded portion is sealed by the reduced pressure sealer 70A. Thereby, each secondary package 52, 52, 52
Is sealed.

Each of the sealed secondary packages 52, 52, 52
Is conveyed to the next step by the reduced-pressure packaging conveyor 66. Packaging device 1 of the present embodiment configured as described above
The operation of 0 is as follows. First, the moisture-proof papers 12A, 12A
Set B. That is, the winding shafts 16A and 16B around which the moisture-proof papers 12A and 12B are wound are connected to the output shaft of a motor (not shown). Next, the winding shafts 16A, 16B
Paper 12A, 12B is fed out from the guide roller 1
It is wound around 8A and 18B and guided to the cross seal portion 20.
Then, as shown in FIG. 3A, the front end edge is completely sealed in the width direction, and the sealed portion is engaged with the stoppers 38, 38. Thus, the setting of the moisture-proof papers 12A and 12B is completed.

At the same time, while adjusting the installation height of each side sealer 48 of the side seal portion 42,
The distance between each side sealer 48 and the side seal cutter 50 is adjusted. That is, an appropriate interval is set according to the width of the work 14 to be packed. After the above initial settings, the apparatus is operated to start the packaging operation.

First, the transport means (not shown) is used to
4, 14, 14 are placed side by side at predetermined intervals on the table 28 of the work supply unit 26. Table 28
When the workpieces 14, 14, 14 are placed thereon, the pusher 30 advances, and the pusher 30
Push forward with 4 and 14 side by side. When the pushed workpieces 14, 14, 14 reach the seal portions of the moisture-proof papers 12A, 12B locked by the stoppers 38, 38, the motor connected to the winding shafts 16A, 16B, the wrapping conveyor 34, and the ear gripper. The workpieces 40, 14 are driven in synchronization with the pusher 30, and as a result, the workpieces 14, 14, 14 are inserted between the two moisture-proof papers 12A, 12B.

When the synchronously driven ear grippers 40 reach a predetermined end position, the winding shafts 16A, 16B
The driving of the motor, the wrapping conveyor 34, and the pusher 30 connected to the motor is stopped. As a result, as shown in FIG. 3B, the workpieces 14, 14, 14 are inserted between the two superposed moisture-proof papers 12A, 12B. The cross sealer 22 is located at the rear end position of the workpieces 14, 14,. The pusher 30, which has pressed the workpieces 14, 14, 14, then retracts and returns to the home position.

On the other hand, after the retraction of the pusher 30, the cross sealer 22 moves the work 14, 14 as shown in FIG.
The two moisture-proof papers 12A, 12B at the rear end of 14, 14 are sealed in the width direction. These two seals are moisture-proof paper 12A,
The front end of 12B is a point seal, and the rear end is an entire seal. Then, the cross seal cutter 24 cuts between the two seal portions in the width direction. As a result, FIG.
As shown in (d), the moisture-proof papers 12A, 12B enclosing the works 14, 14, 14 are formed in a tubular shape and separated from the belt-shaped moisture-proof papers 12A, 12B. That is, the primary package 44 is separated from the strip-shaped moisture-proof papers 12A and 12B.

On the other hand, as shown in FIG. 3D, the strip-shaped moisture-proof papers 12A and 12B are completely sealed at the leading edge, and the seals are locked by stoppers 38 and 38. Therefore, at this point, the work 14 to be packed next is ready. When the cutting by the cross seal cutter 24 is completed, the wrapping conveyor 34 is driven. Moisture proof paper 12
The primary package 44 separated from A and 12B is conveyed to the side seal portion 42 by the wrapping conveyor 34. In the side seal portion 42, the primary package 44 is received by the suction conveyors 46, 46,... And is conveyed to a predetermined side seal position.

When the primary package 44 is transported to the side seal position, the drive of the suction conveyors 46, 46,... Is stopped. Then, after the drive of the suction conveyor 46 is stopped, as shown in FIG.
8, 48,..., Each work 14 of the primary package 44,
Both sides 14 and 14 are completely sealed. Then, the seal portion is cut by the side seal cutters 50, 50,... As a result, as shown in FIG. 3 (f), the works 14, 14, 14 are individually packaged, and the secondary package 5
2, 52, and 52.

The side sealers 48, 48,...
In the sealing by, a work holding plate (not shown) presses the upper part of the primary package 44 to fix the work. Also,
The sealing by the side sealer 48 is performed in order from the inside in order to disperse the tension of the moisture-proof papers 12A and 12B constituting the primary package 44. Thus, it is possible to prevent wrinkles from being generated in the seal portion between the respective works.

After cutting by the side seal cutter 50,
The suction conveyor 46 is driven again, and the secondary package 5
2, 52, 52 are transferred to the direction changing conveyor 64 of the pressure reducing seal part 62 by the suction conveyor 46. Here, when the secondary packaged bodies 52, 52, 52 pass from the suction conveyor 46 to the direction changing conveyor 64, they pass through the distribution unit 54, and the ears cut at the time of side sealing in the distribution unit 54 are separated. Collected. That is, the suction roll 56 of the distribution unit 54
As a result, only the ear portion is introduced into the ear chopper 58, and after being cut by the ear chopper 58, the ear chopper 58 discharges it out of the machine by the ear dust discharging conveyor 60.

The direction changing conveyor 64 keeps the secondary package 5 from the suction conveyor 46 while maintaining the parallel state.
2, 52 and 52 are received, the transport direction is changed by 90 ° and transported in the horizontal direction. Then, it is delivered to the reduced-pressure packaging conveyor 66 while maintaining the parallel state. Secondary package 52,
When the secondary packaging bodies 52, 52, 52 are located at the predetermined vacuum sealing positions, the driving of the vacuum packaging conveyor 66 receiving the 52, 52 is stopped. When the driving of the vacuum packing conveyor 66 is stopped, the vacuum chamber 68 is lowered, and the periphery of the secondary packages 52, 52, 52 is closed to reduce the pressure inside. When the inside of the decompression chamber 68 is decompressed, the internal air is evacuated from the point seal portions of the internal secondary packaging bodies 52, 52, 52, and as a result, the workpieces 14, 1
4 and 14

Here, each of the secondary packages 52, 52, 52 conveyed to the pressure reducing seal position has its point seal portion located between the pressure reducing sealer 70A of the pressure reducing sealing device 70 and the pressure reducing seal receiver 70B. When the air inside is completely removed, the point seal portion is completely sealed by the reduced pressure sealer 70A. As a result, as shown in FIG. 3 (g), each of the secondary packaging bodies 52, 52, 52 is completely sealed around,
Will be the final product.

When the sealing by the vacuum sealer 70A is completed, the vacuum chamber 68 is raised, and then the vacuum packaging conveyor 66 is driven again, and the final product is transported to the next step by the vacuum packaging conveyor 66. Through the series of steps described above, the three works 14, 14, 14 are individually packaged in the moisture-proof papers 12A, 12B. Hereinafter, the same steps are repeated, and the workpieces 14, 14, 14 are sequentially packed.

As described above, in the packaging apparatus 10 of this embodiment, a plurality of works 14, 14, 14 can be individually and simultaneously packaged. At this time, after individually tentatively wrapping, air is vented and sealed, so that wrinkles are generated in the seal portion between each work, the seal width becomes uneven, No holes are generated and the quality is stable. In particular, in the packaging apparatus 10 of the present embodiment, the packaging material is not sealed simultaneously at four locations during side sealing, but is sequentially sealed from the inside to disperse the tension of the packaging material, so that particularly stable packaging is possible. .

In the above embodiment, no particular reference is made to the sealing method.
Not only the heat seal but also an impulse seal or an ultrasonic seal may be used. Further, in the present embodiment, two point seals and all seals are simultaneously performed by one cross sealer 22. However, a cross sealer for point seals and a cross sealer for all seals are separately provided and separately provided. It may be made to seal to.

In the present embodiment, the moisture-proof paper 12A,
Although a blade is used as a means for cutting the 12B, when the moisture-proof papers 12A and 12B are thin, fusing may be used. Also,
In the present embodiment, the moisture-proof papers 12A and 12B before and after the work 14 are sealed in the cross-seal portion 20, but the front and rear of the work 14 are not sealed and can be conveyed to the side seal portion 42 in an unsealed state. Good. In this case, the pressure reducing seal portion 62 seals the front and rear of the work 14 after bleeding air.

Further, in this embodiment, two moisture-proof papers 1
Although 2A and 12B are used by overlapping from the top and bottom,
One piece of moisture-proof paper may be folded and overlapped, and three sides thereof may be sealed. Further, in the present embodiment, the supply direction of the work 14 and the feed direction of the moisture-proof papers 12A and 12B coincide with each other. Paper 12
A and 12B may be sent.

In the present embodiment, the work 14 is wrapped in the moisture-proof papers 12A and 12B and then sealed in the cross-seal portion 20. At the same time as the wrapping, a band heater or the like is combined with a blade to work the work. May be carried out and seal cut. Further, in this embodiment, an L-shaped plate material is used as the stopper 38 (see FIG. 2). However, the moisture-proof papers 12A and 12B are sucked and gripped from above and below to form the ear gripper 40. It is good also as composition which releases suction at the time of running.

Also, the ear gripper 40 of the present embodiment
Is made to engage with the sealing edges of the moisture-proof papers 12A and 12B and to pull the moisture-proof papers 12A and 12B.
The ears of the moisture-proof papers 12A and 12B are stabbed with a needle and gripped, or gripped with a clip or the like, so that the moisture-proof papers 12A and 12B are gripped.
A and 12B may be drawn out.

[0056]

As described above, according to the packaging method and apparatus according to the present invention, the air is released after separating the sheet material wrapping the objects to be packaged for each object to be packaged. In addition, there is no drawback that wrinkles are formed between the adjacent works or the size of each work is shortened due to the shortage, so that accurate cutting cannot be performed, and stable packaging can be performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of an embodiment of a packaging device according to the present invention.

FIG. 2 is a perspective view showing a configuration of a moisture-proof paper feeding device.

FIG. 3 is an explanatory diagram of the operation of the packaging device according to the present embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Packaging apparatus, 12A, 12B ... Moistureproof paper, 14 ... Work, 20 ... Cross seal part, 22 ... Cross sealer, 2
4: Cross seal cutter, 26: Work supply unit, 28
... Table, 30 ... Pusher, 32 ... Conveyor, 34 ...
Envelope conveyor, 38 ... Stopper, 40 ... Ear gripper, 42 ... Side seal part, 44 ... Primary package, 46
... suction conveyor, 48 ... side sealer, 50 ...
Side seal cutter, 52: secondary package, 54: sorting unit, 56: sorting suction roll, 58: ear chopper, 60: ear dust discharging conveyor, 62: decompression sealing unit, 64: direction conversion conveyor, 66: decompression packaging Conveyor, 68: decompression chamber, 70: decompression sealing device

Claims (6)

[Claims] 1. A full sealing step of completely sealing the leading edge portions of two superposed strip-shaped hot-melt sheet materials in a width direction, and after the full sealing step, a plurality of strips are provided between the two sheet materials. A packaged article insertion step of inserting the packaged articles side by side along the width direction of the sheet material, and after the packaged article insertion step, the sheet material at the rear end portion of the packaged material over the width direction. A partial sealing step of partially sealing; a cutting step of cutting and separating a sheet material on a rear end side from the partial sealing portion in a width direction after the partial sealing step; and after the cutting step, the plurality of packaged objects. Wrapped 2
The sheet material is completely sealed in a longitudinal direction orthogonal to the width direction, and an isolation step of isolating each packaged object for each packaged article with the entire seal portion; and after the isolation step, in the longitudinal direction. A separating step of cutting all formed seal portions and separating a sheet material wrapping the packaged object for each of the packaged articles; and a sheet separated for each of the packaged articles after the separating step. A pressure reducing step of putting the material into a decompression chamber and sucking the air inside each sheet material from a partial sealing portion of each sheet material; and, after the depressurizing step, the partial sealing of the sheet material from which the internal air is sucked. A packaging step of packaging the article to be packaged by completely sealing the parts. 2. A first full sealing step of completely sealing the leading edge portions of two superposed strip-shaped hot-melt sheet members in the width direction; and after the first full sealing step, A packaged object insertion step of inserting a plurality of packaged objects between the sheet materials in parallel along the width direction of the sheet material; and, after the packaged object insertion step, a rear end portion of the packaged object. A partial sealing step of partially sealing the sheet material in the width direction; and a second full sealing step of completely sealing the sheet material on the rear end side from the partial sealing portion of the sheet material in the width direction after the partial sealing step. After the second full sealing step, a cutting step of cutting and separating the sheet material between the partial sealing section of the sheet material and the second full sealing section in the width direction, and after the cutting step, Packaged goods are wrapped An isolation step of completely sealing the two sheet materials in a longitudinal direction orthogonal to the width direction and isolating each packaged object for each packaged article by the entire seal portion; A separating step of cutting the entire seal portion formed in the above, and separating the sheet material wrapping the packaged object for each of the packaged articles, and after the separating step, the sheet material separated for each packaged article. A depressurizing step of putting the sheet material into the decompression chamber and sucking the air inside each sheet material from a partial seal portion of each sheet material; and, after the depressurizing step, the portion of the sheet material from which the internal air is sucked When the first packaging is performed by the packaging process of completely sealing the seal portion and packaging the object to be packaged, and the next packaging is continuously performed, the part completely sealed in the second full sealing process is used. As the entire seal at the tip edge Packaging method which comprises carrying out Repeat the package item insertion step to the packaging process. 3. The packaging method according to claim 1, wherein, in the separating step, the sheet material between the respective packaged objects is entirely sealed in order to isolate each of the packaged items. 4. The packaging method according to claim 2, wherein said partial sealing step and said second full sealing step are performed simultaneously. 5. A first sealing means for completely sealing the leading edge portions of two superposed strip-shaped hot-melt sheet materials in the width direction, and between the two sheet materials having completely sealed leading edge portions. Means for inserting a plurality of items to be packaged side by side along the width direction of the sheet material, and a sheet material at a rear end portion of the item to be packaged inserted between the sheet materials having a width. Second sealing means for partially sealing the sheet material in the direction; first cutting means for cutting and separating the sheet material at the rear end side from the partial sealing portion of the sheet material in the width direction; Third sealing means for completely sealing the two sheet materials in the longitudinal direction orthogonal to the width direction and separating each packaged object for each packaged object by the entire seal portion; Cut all the seals, A second cutting unit that separates the wrapped sheet material for each of the packaged items, and receives the sheet material separated for each of the packaged items, and removes air inside each sheet material from each of the sheet materials. A decompression chamber for suctioning from the partial seal portion, and fourth sealing means for completely sealing the partial seal portion of the sheet material in the decompression chamber and packaging the article to be packaged,
A packaging device comprising: 6. The packaging apparatus according to claim 5, wherein the third sealing means seals all the sheet materials between the respective packages in order and separates each of the packages. .