JP2009029467A - Packaging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging apparatus for expanding a package end when packaging and for welding/fusion-cutting a folded end for easy boxing. <P>SOLUTION: The packaging apparatus includes a recess to which the top face, the front face and both side faces of a packaged item are fitted through a tubular airtight film, and a cut-off part for avoiding an edge welded part of the front end welded part in the moving direction of the film covering the packaged item. The ridge line between the front face and the side faces includes a pressing member with a wedge-shaped evacuation recess. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a solid packaging apparatus, and more particularly to inert gas removal from a pillow packaging machine.

  The pillow wrapping machine supplies a solid packaged object at a predetermined interval into a cylindrically formed airtight film, and an end seal device provided on the discharge side of the packaged object allows the cylindrical airtight film to be A package body is manufactured by packaging an article to be packaged by welding and sealing both ends, and is widely used for packaging foods and the like.

  Filling the inside of a package with an inert gas such as nitrogen gas in order to improve the shelf life of food is well known as disclosed in JP-A-11-278538.

  However, it is difficult to tightly package the inert gas while leaving it to a certain extent. For example, Japanese Patent Application Laid-Open No. 2004-142810 includes a rotary end seal device on the discharge side of the packaged object and an end seal device. Discloses a pillow wrapping machine equipped with a degassing device that pushes the inert gas in the cylindrical airtight film backward before it is welded sealed and cut.

  In the above publication, the end seal device is a rotary type, and the rotational movement of the depressing member of the degassing device is synchronized with the rotation of the end seal device. It is disclosed that degassing can be performed with good timing while suppressing a cylindrical airtight film.

  However, in the above-described gas venting device, when the cylindrical airtight film is restrained by the restraining member, it is shown in FIG. 5 between the front surface of the cube-shaped article to be packaged and the tip weld portion in the airtight film traveling direction that has already been sealed. As shown, a space 105 is generated and an inert gas flows in. For this reason, there is a problem that the end of the package body swells and does not fit in the box when the package body is packed.

JP 2004-142810 A JP 11-278538 A

  In view of the above prior art, an object of the present invention is to provide a packaging device that reliably removes inert gas from the inside of the package and shapes the welded portion at the tip of the tubular airtight film in the traveling direction.

  In the present invention, a restraining surface for restraining the packaged object contained from the upper side, a restraining surface for restraining from the front surface, and a restraining surface for restraining from both side surfaces are integrally formed to form a cylindrical shape that wraps the packaged object. The cutting part that escapes the welded part at both ends of the welded part at the tip of the airtight film traveling direction is formed, and the restraining member with wedge-shaped recesses on the restraining surface that restrains from the front and the restraining surface that restrains from both sides is earnestly studied. As a result, it has been found that the inert gas inside the package does not flow into the end of the tubular airtight film in the traveling direction, and the operation can be smoothly performed by providing the holding member with the adhesive shape holding tape. And found the present invention.

The packaging device according to the present invention includes a holding member having a recess that fits into an object to be packaged in the packaging material, and means for pressing the suppressing member against the object to be packaged in the packaging material, Although the said recessed part has opening in one direction which discharges | emits the said gas, the packaging apparatus of this invention has the following structures as the basic characteristics.
(1) In a packaging device for packaging an object to be packaged together with gas in a packaging material, a restraining member having a recess that fits into the packaged material in the packaging material, and the restraining member in the packaging material Means for pressing against an object, and the recess has an opening in one direction for discharging the gas.
(2) The packaging device according to (1), wherein the holding member is cut out in a portion other than a direction perpendicular to a surface of the packaging material that comes into contact with an object to be packaged.
(3) (1) or (2), wherein the holding member has a notch that does not interfere with an ear portion of a sealing portion of the packaging material in connection with the recess. Packaging equipment.
(4) The packaging device according to (3), wherein the notch is reduced in depth toward a surface where the restraining member comes into contact with an upper surface of an object to be packaged in the packaging material. .
(5) The packaging device according to any one of (1) to (4), wherein the holding member is made of sponge.
(6) The packaging device according to (5), wherein a shape-retaining tape is affixed to a surface of the holding member that comes into contact with an object to be packaged in the packaging material.
(7) The packaging device according to (6), wherein a ridge line formed by a surface of the restraining member that contacts the package in the packaging material and a bottom surface of the restraining member is rounded.

  According to the packaging device of the present invention, the inert gas venting device includes a restraining member integrally formed with surfaces for restraining the upper surface, the front surface, and both side surfaces of the packaged object in which the tubular airtight film is enclosed. Since the end of the package body swells due to the inert gas inside the packaged object contained in the cylindrical airtight film, and the package body is not packed in the box, the problem arises Inert gas can be removed without any problems.

  In addition, since the holding member is provided with a cutting portion that escapes the both-end ear welded portion of the cylindrical airtight film advancing direction tip welded portion wrapping the packaged article, the cylindrical airtight film advancing direction tip welded portion both end ears The shape of the welded portion can be maintained.

  Furthermore, since the holding member is provided with a shape-retaining tape with an adhesive, the top surface of the package can be surely secured even if the package is slightly misaligned in the cylindrical airtight film on the conveyor. And a front surface and both side surfaces can be guided to the recessed part fitted through a cylindrical airtight film.

The packaging device of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic side view showing an embodiment of a pillow packaging machine according to the present embodiment. The pillow packaging machine sequentially includes an article transport and supply device, an end seal device, a packaging device, and a carry-out conveyor device from the upstream side. It is arranged.

  2 is a perspective view of a holding member provided in the packaging device, FIGS. 3 and 4 are explanatory views for explaining the holding member, FIG. 5 is an external view of a conventional packaged body, and FIG. FIG. 7 and FIG. 8 are schematic side views showing aspects of the present embodiment.

  As shown in FIG. 1, the pillow packaging machine 100 according to the present embodiment includes a packaged material conveyance and supply device 200, an end seal device 300, a packaging device 400, and a carry-out conveyor device 500. A belt-like airtight film is formed into a tubular shape through a bag making machine, and the overlapped airtight film polymerization end is sealed with a center sealer to form a tubular airtight film (device not shown).

  This example shows an example applied to a pillow packaging machine for individually wrapping cheese. In various apparatuses in the previous stage (not shown), the cheese package 102 is moved on the conveyor 201 in a state where the cheese package 102 is supplied and arranged at predetermined intervals in a cylindrical airtight film 101 formed in a cylindrical shape in advance. Reference numeral 202 denotes a pulley, which forms an endless track between the conveying conveyor 201 and the conveying conveyor 203 with an opposing pulley (not shown), and constitutes an article-conveying and feeding apparatus 200.

  Reference numeral 300 denotes an end seal device, which is disposed on the downstream side of the article transporting and supplying device 200. Further, the packaging device 400 is disposed in the vicinity of the downstream side of the end seal device 300. The end seal device 300 includes a heater and a cutter (not shown) at the top and bottom, and sandwiches and seals and cuts the cylindrical airtight film 101 by a vertical drive device (not shown).

  Reference numeral 500 denotes a carry-out conveyor device, which carries the already packaged body 103 at a predetermined interval and is provided in the vicinity of the downstream side of the end seal device 300. Reference numeral 501 denotes a transport conveyor, which forms an endless track with the transport conveyor 501 and the transport conveyor 503 between a pulley (not shown) facing the pulley 502, and constitutes a carry-out conveyor device 500.

  A packaging device 400 includes a restraining member 401, a base plate 402 of the restraining member 401, and a shaft 403 that transmits the power of a drive device (not shown) that drives the restraining member 401 up and down in the direction of the arrow. The holding member 401 is made of a sponge having elasticity, and when the width, height, and length of the article to be wrapped 102 are W, H, and L, respectively, as shown in FIG. A concave portion 410 into which the package 103 is fitted is provided with a slightly small height H1 and a slightly small L1. The concave portion 410 into which the package 103 is fitted has an upper surface of the packaged object 102 on the surface 411 through the cylindrical airtight film 101 and a side surface of the packaged object 102 on the surface 412 through the cylindrical airtight film 101. The front surface of the article to be packaged 102 abuts on the surface 413 with the cylindrical airtight film 101 interposed therebetween.

  Further, the holding member 401 has a height H2 that is approximately ½ of the height H of the package 102 and a width W of the package 102 on both sides of the surface 413 that the front side of the package 102 contacts. Cutting portions 420 and 430 are provided which are formed by a remaining portion having a slightly smaller width W2 left in the center portion and a remaining portion of L2 which is smaller than the length L of the package 102. Further, as shown in FIG. 3, wedge-shaped concave portions 422 (see arrow B in FIG. 3) and 432 are provided on the surfaces 421 and 431 constituting the cutting portions 420 and 430 up to the surface 411 where the upper surface of the article to be packaged 102 abuts. May be.

  The depth of cut of the wedge-shaped concave portions 422 and 432 becomes shallower toward the surface 411 on which the upper surface of the article to be packaged 102 abuts. Further, the wedge-shaped recesses 422 and 432 are provided so as to extend slightly over the surface 412 on which the side surface of the article to be packaged 102 abuts and the surface 413 on which the front side of the object to be packaged 102 abuts. The height H3 of the restraining member 401 is formed at a height that is sufficiently elastic even when pressed from the height H direction of the article to be packaged 102.

  The restraining member of the present invention promptly moves the inert gas to the rear when the upper and front surfaces of the article to be packaged are fitted into the recesses to which both sides are fitted via the cylindrical airtight film. A configuration may be adopted in which a shape-keeping tape with an adhesive made of a sponge or the like and made of a sponge or the like and a resin film having a low frictional resistance is attached. That is, FIG. 2 shows a surface 411 in which the lower surface 414 of the holding member 401 and the upper surface of the packaged object 102 are in contact with each other via the cylindrical airtight film 101, and the side surface of the object to be packaged 102 is in contact with the cylindrical airtight film 101. On the surface 412 and the surface 413 with which the front surface of the packaged object 102 abuts via the cylindrical airtight film 101, the shape holding tape 440 with an adhesive made of a resin film or the like having a smooth surface and a low frictional resistance is provided on the pressing member 401. An example of pasting across the side surface 415 is shown.

  The ridgeline between the lower surface 414 and the surface 412 of the restraining member 401 and the lower surface 414 and the surface 413 of the restraining member 401 is a little strongly pulled when affixing the adhesive shape holding tape 440 as shown by arrow A. An R shape is provided at the ridge line portion to form a guide to the concave portion 410 of the package object 102. The R shape can be formed larger or smaller depending on the force applied when the shape holding tape 440 is applied.

Next, an aspect in which the package object 102 is packaged using the packaging apparatus 400 of the present embodiment will be described.
First, as shown in FIG. 1, the cylindrical airtight film 101 on the front side of the package 102 placed in the cylindrical airtight film 101 filled with an inert gas is welded and sealed by an end seal device 300. Cut. Thereafter, the article to be packaged 102 is conveyed under the packaging apparatus 400, the article to be packaged 102 is pressed by the holding member 401 of the packaging apparatus 400, and the inert gas filled in the cylindrical airtight film 101 is on the left side of the figure. Discharged. Further, the end seal device 300 welds and seals the rear end portion of the article to be packaged 102 and cuts it. The packaged body 103 packaged in this manner is opened when the packaging device 400 is raised, conveyed in the direction of the arrow by the conveyor 501 of the carry-out conveyor device 500, and conveyed to a boxing device (not shown). .

  Next, a process of discharging the inert gas from the cylindrical airtight film 101 will be described with reference to FIGS. FIG. 7 shows a state in which the next packaged object 102 to be packaged is set at a predetermined position with the holding member 401 raised. The position to be set is detected by a phototube device or the like (not shown), and the conveyor 501 stops to stop at a predetermined position, or a stopper (not shown. At this time, the conveyor 501 moves in the direction of the arrow. Etc.) After the article to be packaged 102 is set at a predetermined position, the restraining member 401 is quickly lowered in the arrow direction. At this time, the front end welded portion 104 of the tubular airtight film 101 and both end ear welds 107 and 108 of the front end welded portion 104 in the traveling direction are pressed onto the lower surface 414 of the restraining member 401.

  The space portion 105 of the cylindrical airtight film 101 formed in a triangular shape between the front surface of the article to be packaged 102 and the traveling direction front end welded portion 104 is formed in a triangular shape while the surface 413 of the holding member 401 is pressed against the left side of the figure. The inert gas accumulated in the space 105 of the formed cylindrical airtight film 101 is pushed out to the left side of the figure. The inert gas in the space (not shown) of the cylindrical airtight film 101 formed on the side surface of the article to be packaged 102 is also pushed out to the left in the figure while being pushed by the surface 412 of the suppressing member 401. When the restraining member 401 reaches a predetermined lowered position, the inert gas in the space 106 formed between the upper surface of the article to be packaged 102 and the cylindrical airtight film 101 is pushed out to the left side of the figure.

  Further, pressing is performed until the lower surface 414 of the holding member 401 comes into contact with the transport surface of the transport conveyor 501, and the inert gas venting operation is finished. The situation at this time will be described in detail with reference to FIG. When the upper surface of the article to be packaged 102 and the surface 411 of the restraining member 401 are in contact with each other via the cylindrical airtight film 101, restraint is performed so that a clearance C can be secured between the lower surface 414 of the restraining member 401 and the conveyor 501. Since the height H1 of the member 401 is formed, the inert gas remaining at the end can be pushed out to the left side of the figure from the space formed between the package 102 and the cylindrical airtight film 101 that can be the clearance C.

The inert gas accumulated in the swelling 109 due to the inert gas reservoir shown in FIG. 8 is pushed out to the left in the figure by pressing the restraining member 401 so that the clearance C becomes substantially zero. At this time, since the cutting parts 420 and 430 are provided in the holding member 401, the surfaces 412 and 413 are easily bent inward, and the object to be packaged 102 can be held and the inert gas can be discharged reliably.
After the restraining member 401 formed of a resilient sponge is compressed and the surroundings of the object to be packaged 102 are exhausted, the end seal device 300 promptly has a cylindrical shape behind the object to be packaged 102 as shown in FIG. The airtight film 101 is sandwiched, welded and sealed.

  Next, the operation when the holding member shown in FIG. 3 is used will be described. FIG. 6 shows the shape of the cylindrical airtight film 101 according to the shape of the packaged object 102 after placing the substantially cubic packaged object 102 in the cylindrical airtight film 101 and welding the ends. As described above, the ear welded portions 107 and 108 are formed at both ends of the welded portion 104. The tip welded portion 104 is bent downward on the surface 413 of the restraining member 401 while being pressed by the lower surface 414 of the restraining member 401 as the restraining member 401 is lowered. At the same time, the both-end ear welded portions 107 and 108 are opened to the cutting portions 420 and 430 and do not enter the wedge-shaped concave portions 422 and 432 and interfere with the holding member 401.

  Further, when the pressing member 401 is pressed and the clearance C approaches 0, the depths of the wedge-shaped concave portions 422 and 432 are formed so as to become shallower toward the upper surface 411 of the package object 102. The space of the recesses 422 and 432 can be reliably closed and the inert gas in the space 110 part (FIG. 6) formed between the corner 102 of the package 102 and the cylindrical airtight film 101 can be pushed out to the outside. As described above, both end ear welded portions 107 and 108 of the front end welded portion 104 of the cylindrical airtight film 101 do not interfere with the restraining member 401, so that the shaping of both end ear welded portions 107 and 108 may be lost. No.

When the holding member 401 shown in FIG. 2 is used, the operation is as follows.
In other words, when the article to be packaged 102 moves on the conveyor 201, it may move somewhat in the cylindrical airtight film 101, but the holding member 440 has an R shape with the adhesive shape holding tape 440. Since the object to be packaged 102 is guided to the concave portion 410 by the insertion guide, a slight displacement of the object to be packaged 102 in the cylindrical airtight film 101 can be allowed. In addition, compared to the case where the holding member 401 is made of only sponge, the friction with the tubular airtight film 101 is less when the shape-retaining tape is affixed. The package 102 can be held and released smoothly.

As described above, the packaging apparatus capable of reliably removing the inert gas inside the packaging body having the recesses in which the upper surface, the front surface, and both side surfaces of the packaged object are fitted via the cylindrical airtight film has been described in detail.
In addition, although described about the packaging of cheese in a present Example, the to-be-packaged product is not limited to cheese. In addition, although the cube-shaped article to be packaged has been described, the shape of the article to be packaged is not limited to the cube, and other shapes can be obtained by configuring the concave shape of the restraining member according to the shape of the article to be packaged. Applicable to packaging.

It is a schematic side view which shows one Example of the pillow packaging machine of a present Example. It is a perspective view of the control member with which the packaging apparatus of the present Example was equipped. It is a perspective view explaining the detail of a control member. It is a perspective view explaining the detail of a control member. It is the schematic which shows the external appearance of the conventional already packaged body. It is the side view and perspective view which show the external appearance of the already packaged body of a present Example. It is a schematic side view which shows the aspect of a present Example. It is a schematic side view which shows the aspect of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Pillow packaging machine 101 ... Cylindrical airtight film 102 ... Packaged object 103 ... Prepackaged body 104 ... Advance direction welding part 105 ... Space part 106 ... Space Part 107 ... both-ends ear welding part 108 ... both-ends ear welding part 109 ... swollen 110 ... space
200: Transport object supply device 201 ... Conveyor 202 ... Pulley 203 ... Conveyor 300 ... End seal device 400 ... Packaging device 401 ... Holding member 402 ... Base plate 403 ... Shaft 410 for transmitting power ... Recessed part 411 in which already packaged body 103 is fitted ... Surface 412 ... surface 413 ... surface 414 on which upper surface of already packaged body 103 abuts · Lower surface 415 ··· Side surface 420 ··· Cutting portion 421 ··· Surface 422 · · · Wedge-like recess 430 ··· Cutting portion 431 · · · Surface 432 · · · Wedge-like recess 440 · · · with adhesive Shape holding tape 500... Unloading conveyor device 501... Conveyor 502... Pulley 503.
C: Clearance

Claims (7)

In a packaging device that wraps an article to be packaged with gas in the packaging material,
A holding member provided with a recess to be fitted to an article to be packaged in the packaging material;
Means for pressing the restraining member against an object to be packaged in the packaging material,
The said recessed part has an opening in 1 direction which discharges | emits the said gas, The packaging apparatus characterized by the above-mentioned.   2. The packaging device according to claim 1, wherein the holding member is cut out in a portion other than a direction perpendicular to a surface of the packaging material that comes into contact with an object to be packaged.   The packaging device according to claim 1, wherein the holding member has a cutout that does not interfere with an ear portion of a sealing portion of the packaging material in connection with the recess. .   4. The packaging device according to claim 3, wherein the notch is reduced in depth toward a surface where the holding member abuts on an upper surface of an object to be packaged in the packaging material.   5. The packaging device according to claim 1, wherein the holding member is made of a sponge.   6. The packaging device according to claim 5, wherein a shape-retaining tape is affixed to a surface of the holding member that comes into contact with an object to be packaged in the packaging material. 7. The packaging device according to claim 6, wherein a ridge line formed by a surface of the pressing member that comes into contact with an object to be packaged in the packaging material and a bottom surface of the pressing member is rounded.

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