JP3047957U - Packaging structure in automatic packaging equipment for packaged objects - Google Patents

Abstract

(57) [Summary] (with correction) [Problem] To reliably prevent formation of a substantially triangular film overlapping portion due to folding of a vertical seal portion on the front and rear surfaces in the transport direction of a package after horizontal fusing and sealing. Provided is a packaging structure for an automatic packaging apparatus for a packaged object that can perform packaging. SOLUTION: A package 3 which is sequentially conveyed is continuously wrapped with a heat shrinkable film 4a, and one part of the heat shrinkable film 4a which wraps the package 3 is attached to the package 3. A vertical fusing seal is applied along the transport direction, and the heat-shrinkable film 4a on which the vertical fusing seal is applied is sequentially applied between the packages 3 in a direction intersecting the transport direction of the package 3 in order. In this way, in the automatic packaging apparatus for packaging objects that can individually package the packaging objects 3, the automatic packaging apparatus 1 is provided with a vertical fusing seal and covers the packaging body 3 before applying the horizontal fusing seal. The point is that a film pulling means for pulling the wrapped heat-shrinkable film 4a oppositely from a direction intersecting the transport direction of the packaged object 3 is provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a packaging structure in an automatic packaging apparatus for packaging objects, and more particularly, to a heat shrinkable film which is provided with a vertical fusing seal and which encloses the packaging body before applying a horizontal fusing seal. An approximately triangular film is formed by pulling the heat-shrinkable film back and forth on the front and rear surfaces of the package in the transport direction after the horizontal fusing by pulling the package against the direction intersecting the transport direction of the package. The present invention relates to a packaging structure in an automatic packaging apparatus for a packaged object, which can reliably prevent the formation of a superposed portion.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, there is an apparatus shown in FIG. 6 as an automatic wrapping apparatus for wrapped objects for individually wrapping sequentially transferred objects.

[0003] That is, the above-described apparatus moves a package 3 to be sequentially sent from a supply conveyor 2 using a chain conveyor or the like via a supply conveyor attachment 2a which is axially fixed at a constant pitch from an upper part to an oblique lower part in a forward direction. The heat-shrinkable film 4a is continuously covered via a bag making machine (former) 4, and then the lower part of the heat-shrinkable film 4a is covered by a vertical sealer 5 located below the bag making machine 4. The heat-shrinkable film 4a cut along with the longitudinal fusing and sealing along the conveying direction of the body 3 is continuously discharged as a scrap (arrow H).

Next, the tubular heat-shrinkable film 4 a to which the vertical fusing seal has been applied and the packaged objects 3 stored at a predetermined interval in the heat-shrinkable film 4 a are sent downward by the upper feed conveyor 6 a of the transfer conveyor 6. While being conveyed to the horizontal sealer 7 in a sandwiched state via the conveyor 6b, the tubular heat-shrinkable film 4a is transported between the respective packaged objects 3 via the horizontal sealer 7 in a direction intersecting the transport direction of the packaged object 3. Apply a horizontal fusing seal sequentially.

[0005] Thereafter, the packages 3 individually cut through the horizontal fusing seal are sequentially sent into the shrink tunnel 9 via the discharge conveyor 8 and are completely removed via the heat shrinkage of the heat shrinkable film 4a. It can be packaged.

[0006]

[Problems to be solved by the invention]

 However, the automatic packaging apparatus having the above configuration has the following problems.

That is, as shown in FIG. 7A, the automatic packaging device having the above-described configuration is formed into a cylindrical shape along the transport direction of the packaged object 3 by the vertical sealer 5 located below the bag making device 4. A vertical fusing seal is applied to the lower part of the heat-shrinkable film 4a. The portion where the heat-sealing is actually applied is made from the lower surface of the packaged object 3 to the thickness dimension of the member of the bag making device 4 (arrow a). ), The gap between the lower surface of the member of the bag making device 4 and the upper surface of the sealer member 5a of the vertical sealer 5 (arrow b), and the distance from the upper surface of the sealer member 5a to the sealer fusing tip 5b (arrow c). Is located at a position which is lowered by the total dimension of the above.

Therefore, the tubular heat-shrinkable film 4 a to which the vertical fusing seal has been applied as described above and the packaged objects 3 stored at predetermined intervals in the heat-shrinkable film 4 a are disposed above the transfer conveyer 6. Is transported to the horizontal sealer 7 in a sandwiched state via the lower feed conveyor 6b. At this time, the vertical seal portion 4b is lowered by the sum of the thickness dimension, the gap dimension, and the distance dimension as described above. Since it is located at a position, an extra heat-shrink film is inevitably provided on the lower surface side of the package 3 to which the vertical fusing seal has been applied via a transfer conveyor 6 which transports the package 3 in a sandwiched state. In addition to the occurrence of a band-like turn, the sheet is transported to the horizontal sealer 7 while maintaining the folded state as shown in FIG.

Accordingly, the tubular heat-shrinkable film 4a transferred to the horizontal sealer 7 with the vertical seal portion 4b folded back to the lower surface side of the packaged object 3 is stored in the heat-shrinkable film 4a. By successively applying the horizontal fusing seal between each of the packages 3, the vertical seal portion 4b is blown down below the package 3 as shown in FIG.

[0010] Therefore, the packaged object 3 which is cut individually from the horizontal seal portion 4c via the horizontal fusing seal and is sequentially sent into the shrink tunnel 9 via the discharge conveyor 8 is heated by the heat shrinkable film 4a. Although the package is shrunk by shrinkage, heat shrinkage is performed while the vertical seal portion 4b is folded back as described above. As a result, the individual packaged objects 3 shrink-wrapped in the transport direction are reduced. On the front and rear surfaces, a substantially triangular film overlapping portion 4d in which three heat-shrinkable films 4a are stacked is formed as shown in FIG. There has been a problem that the appearance is impaired.

However, in the present invention, the heat-shrinkable film formed by enclosing the wrapped body which has been subjected to the vertical fusing seal and before the horizontal fusing seal is formed is paired in a direction intersecting the conveying direction of the wrapped body. By pulling in the opposite direction, it is possible to reliably prevent the formation of a substantially triangular film overlapped portion due to excessive heat-shrinkable film folding on the front and rear surfaces in the transport direction of the package after horizontal fusing and sealing. It is an object of the present invention to provide an excellent packaging structure for an automatic packaging apparatus for a packaged object that can be extremely excellent.

[0012]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has developed a completely new packaging system for an automatic packaging apparatus for a packaged object, and has taken the following technical measures.

That is, in the present invention, the package 3 which is sequentially conveyed is continuously covered with the heat-shrinkable film 4a, and one part of the heat-shrinkable film 4a which covers the package 3 is provided. A vertical fusing seal is applied along the transport direction of the package 3, and the heat-shrinkable film 4 a to which the vertical fusing seal is applied is placed between the packages 3 in a direction intersecting the transport direction of the package 3. In the automatic packaging apparatus for the packaged object which can individually package the packaged object 3 by sequentially applying the fusion seal, the automatic packaging apparatus 1 is provided with a vertical fusion seal and before the horizontal fusion seal is performed. Since a film pulling means is provided for pulling the heat shrinkable film 4a enclosing the package 3 in a direction intersecting the conveying direction of the package 3 in opposition to the heat shrinkable film 4a, the vertical fusing seal is provided. The excess vertical fusing seal 4b that can be folded back during fusing Shrink film 4a advantages vertical seal portion 4b can be reliably prevented from becoming a folded state by the excess heat shrinkable off Irumu 4a there Ru by stretching.

Furthermore, since the vacuum device 10 is used as the tension means, there is an advantage that the heat-shrinkable film 4a can be stretched by suction without being damaged without physical contact.

[0015]

[Embodiment of the invention]

 Hereinafter, one embodiment of the packing structure in the automatic packaging apparatus for a packaged object according to the present invention will be described with reference to the drawings. In the automatic packaging apparatus, description of the same parts as those of the conventional automatic packaging apparatus will be described below. Omitted.

In FIGS. 1 and 2, reference numeral 1 denotes a transfer comprising a supply conveyor 2, a bag-making device 4, a heat shrinkable film 4a, a vertical sealer 5, an upper feed conveyor 6a and a lower feed conveyor 6b for a packaged object 3. 1 shows an automatic packaging device for a packaged object composed of a conveyor 6, a horizontal sealer 7, a discharge conveyor 8, and a shrink tunnel 9.

Reference numeral 10 denotes a vacuum device provided between the bag making device 4 and the transfer conveyor 6, and the bag making device is provided on the vacuum device 10 as shown in FIG. The width of the packaged object 3 which is housed at a predetermined interval in the heat-shrinkable film 4a which is longitudinally melt-sealed from the container 4 and continuously discharged in a cylindrical shape, and which is discharged together with the heat-shrinkable film 4a. A pair of vacuum rollers 10a are provided so as to be rotatable in forward and reverse directions.

The vacuum roller 10a has a plurality of air holes 10b, such as small holes and slits, formed on the outer peripheral surface thereof, and the vacuum device 10 has a hollow rotary shaft provided in the vacuum roller body. It is connected to a vacuum source (not shown), so that the air inside the vacuum roller main body is sucked (arrow F) through the vacuum device 10 so that both sides of the tubular heat-shrinkable film 4a are formed. The part is adsorbed by the suction hole 10b formed in the outer peripheral surface (arc surface) of the vacuum roller 10a, and moves together with the package 3 in the conveying direction of the package 3, thereby inevitably. The vacuum roller 10a is rotated (arrow E) in the transport direction of the heat-shrinkable film 4a, and at this time, both heat-shrinkable films 4a adsorbed to the suction holes 10b of the vacuum roller 10a are rotated. Parts are when passing through the vacuum roller 10a that rotates, formed by the structure along the outer peripheral surface of the Baki Yumurora 10a (arcuate surface) is pulled to face in a direction away from each other.

The automatic packaging apparatus for an object to be packaged according to the embodiment of the present invention has the above-described configuration. Next, a case where the object to be sequentially conveyed is shrunk and packaged by using the automatic packaging apparatus will be described. .

First, as shown in FIG. 2, at the time when the bag 3 is discharged from the bag-making device 4 (line AA), as shown in FIG. It is encapsulated by the heat-shrinkable film 4a which is sealed and formed into a tubular shape.

After that, the heat shrinkable film 4a sent to the space between the vacuum rollers 10a (line B-B) receives the suction (arrow F) of the vacuum device 10 as shown in FIG. Both ends are sucked into the suction holes 10b of the vacuum roller 10a via the vacuum roller 10a, and move together with the package 3 in the transport direction of the package 3.

As described above, the heat-shrinkable film 4a, which moves while both ends are attracted to the vacuum roller 10a, necessarily rotates the vacuum roller 10a in the moving direction of the heat-shrinkable film 4a via both ends. (Arrow E).

Therefore, when both sides of the heat-shrinkable film 4a adsorbed to the suction holes 10b of the vacuum roller 10a pass through the rotating vacuum roller 10a, the heat-shrinkable film 4a moves along the outer peripheral surface (arc surface) of the vacuum roller 10a. It is pulled (arrow G) as shown in FIG. 3 (C) from the direction away from each other, that is, the direction intersecting the carrying direction of the package 3, and at this time, the actual vertical sealing is performed. As shown in FIG. 7 (a), the portion 4b is formed from the lower surface of the packaged object 3 with the thickness dimension (arrow a) of the member of the bag making device 4 and the lower surface of the member of the bag making device 4 and the vertical sealer 5. It is located at a position which is lowered by the total sum of the clearance dimension (arrow b) from the upper surface of the sealer member 5a and the distance dimension (arrow c) from the upper surface of the sealer member 5a to the sealer fusing tip 5b. Therefore, the vertical seal portion 4b is inevitably provided in FIG. As shown in, it would enter the transfer conveyor 6 together with the package 3 as well as increased by the side portions is pulled to the lower surface position of the package 3 (arrow C).

That is, the heat-shrinkable film 4a, which is discharged from the bag making device 4 after being subjected to the vertical fusing seal and covers the package 3 before being subjected to the horizontal fusing seal, is transferred to the package 3 By pulling oppositely from the direction crossing the direction, it is possible to surely stretch the folded vertical seal portion to a flat state.

As described above, the package 3 and the heat-shrinkable film 4a whose vertical seal portions are stretched to a flat state and enter the transfer conveyor 6 are fed upward from the transfer conveyor 6 for transferring the package 3. Since the upper and lower surfaces are conveyed between the conveyor 6a and the lower feed conveyor 6b in a sandwiched state, the vertically sealed portion once stretched to a flat state is transferred to the horizontal sealer 7 without forming a fold (CC line portion). At the same time, as shown in FIG. 3 (d), a horizontal fusing seal is applied between the packages 3 to be discharged individually.

Therefore, the individual packaged objects 3 discharged afterwards are sequentially sent to the shrink tunnel 9 via the discharge conveyor 8 and heated, so that the individual packaged objects 3 are as shown in FIG. However, the heat-shrinkable film 4a does not have any overlapped portions on the front and rear surfaces in the transport direction, leaving only a substantially T-shaped weld mark, and is completely shrink-wrapped with the heat-shrinkable film 4a, and thus does not impair the appearance. Good-looking wrapped articles (packed objects) can be provided.

In the above-described embodiment, a heat-shrinkable film 4 a wrapping the package 3 is interposed between the bag making device 4 and the transfer conveyor 6 in a direction intersecting the conveying direction of the package 3. A vacuum device 10 having a pair of vacuum rollers 10a, each of which is provided with a pair of vacuum rollers 10a that are provided with an intake hole 10b on the outer peripheral surface and that can rotate in the normal and reverse directions, is used as a film pulling unit for pulling the film in opposite directions. However, for example, the pair of vacuum rollers 10a may be rotated in the same direction and at the same speed as the transport direction of the packaged object 3 via a rotation driving means such as a motor, or the rotation speed of the vacuum roller 10a may be adjusted. The speed may be set slightly faster than the transfer speed of the vacuum roller 3. In other words, if the heat-shrinkable film 4a can be stretched by suction without damaging the vacuum roller 10a and the vacuum device 10, Ability, construction, the even presence or absence of not without vacuum roller 10a installed number only not limited to determined course.

Therefore, for example, when the heat-shrinkable film 4 a is made of a material having a relatively good slip, as shown in FIG. A pair of vacuum boxes 10c having holes 10b may be used, and even in this case, the heat-shrinkable film 4a can be stretched along the slope of the facing slope without physical contact by suction without damaging the heat-shrinkable film 4a. There are advantages.

In the above-described embodiment, the vacuum device 10 is used as the film pulling means. However, the present invention is not limited to this. The heat-shrinkable film 4a may be stretched in a flat state by pulling the heat-shrinkable film 4a in the opposite direction from the direction crossing the heat-shrinkable film 4a, and even in this case, both sides of the heat-shrinkable film 4a may be damaged. Although there is an advantage that the film can be stretched by being opposed without stretching, it goes without saying that the specific mechanism, function, location, etc. of the film pulling means are not limited.

In the above embodiment, the object to be packaged has a substantially rectangular shape, but the object to be packaged may be cylindrical. In this case, the same advantages as described above are obtained.

[0031]

[Effect of the invention]

 As described above, the packaging structure in the automatic packaging apparatus for the package according to the present invention has a heat shrinkage that covers the package before the vertical fusing seal and the horizontal fusing seal. Since a film tensioning means is provided to tension the film in a direction crossing the transport direction of the packaged object, the heat-shrinkable film is formed after the vertical seal at the folded part formed during fusing of the vertical fusing seal. By stretching, there is an effect that the vertical seal portion can be reliably prevented from being folded back. Also, there is an effect that the heat-shrinkable film can be stretched without damaging it.

Therefore, it is possible to completely prevent the formation of a substantially triangular film overlapping portion due to the folding of the vertical seal portion on the front and rear surfaces in the transport direction of the packaged object after the horizontal fusing seal, thereby completely shrinking the package. Therefore, not only is it possible to reliably provide an attractively packed article (packaged object) at any time without deteriorating the appearance, and it is possible to provide a lateral fusion. When applying a seal, apply a horizontal fusing seal only to the heat-shrinkable film that is doubled between each packaged object without any intervening vertical sealing part that has been subjected to vertical fusing and folded back. As a result, it is possible to prevent the occurrence of sealing failure as well.

[Brief description of the drawings]

FIG. 1 is a partially omitted overall configuration view showing an automatic packaging apparatus for a packaged object according to the present invention.

FIG. 2 is a partially omitted plan view of the automatic packaging device of the present invention.

FIG. 3 shows a packaging state of a body to be packaged by the automatic packaging device of the present invention, and FIG.
FIG. 2B is a cross-sectional view of a partly omitted line BB of FIG. 2, and FIG.
2 is a partially omitted cross-sectional view taken along line CC, and FIG.

FIG. 4 is a perspective view of the packaged object at the end of packaging by the automatic packaging apparatus for the packaged object.

FIG. 5 is a partially omitted plan view showing another embodiment of the vacuum device.

FIG. 6 is a partially omitted general configuration diagram showing a conventional automatic packaging apparatus for a packaged object.

FIG. 7 shows a state of packaging of an object to be packaged by a conventional automatic packaging apparatus, and (a), (b), (c) and (d) are partial explanatory views of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Automatic packaging apparatus of a to-be-packed body 2 ... Supply conveyor 3 ... To-be-packed body 4 ... Bag-making machine 4a ... Heat-shrinkable film 5 ... Vertical sealer 6 ... Transfer conveyor 6a ... Upper feed conveyor 6b ... Lower feed conveyor 7 ... Horizontal sealer 8 ... discharge conveyor 9 ... shrink tunnel

Claims (2)

[Utility model registration claims] 1. A package (3) successively conveyed is continuously covered with a heat-shrinkable film (4a), and the package (3) is
One part of the heat-shrinkable film (4a) enclosing (3)
(3) A vertical fusing seal is applied along the conveying direction, and the heat-shrinkable film (4a) on which the vertical fusing seal is applied is transported between the respective packages (3) in the transport direction of the package (3). In an automatic packaging device for a packaged object capable of individually packaging the packaged object (3) by sequentially applying a horizontal fusing seal in a crossing direction, the automatic packaging device (1) is provided with a vertical fusing seal, And a heat-shrinkable film enclosing the package (3) before the horizontal fusing seal is applied.
A packaging structure for an automatic packaging apparatus for a packaged object, comprising a film tension means for tensioning (4a) in a direction intersecting with the direction of transport of the packaged object (3). 2. A packaging structure in an automatic packaging apparatus for a packaged object according to claim 1, wherein a vacuum device (10) is used as said pulling means.