JP2014213872A - Film packing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing device which can change a packaging height and the like so as to be suitable to a size of a packaged object, winds a film around the packaged object efficiently, and packs the packed object compactly with a simple structure.SOLUTION: A supply conveyor 18 is arranged at the one end of a base 12 to carry in a packaged object 126 and a packing conveyor 20 provides a gap 24 of a predetermined width on the downstream side of the supply conveyor 18 so as to be continued to the same. A carrying conveyor 22 provides a gap 26 of a predetermined width on the downstream side of the packaging conveyor 20 to be continued and carries out the packaged objects 126. In the vicinity of the packaging conveyor 20, a chain 62 is placed in the vertical direction to the packaging conveyor 20, and is provided annularly where the flow direction of the packing conveyor 20 is adopted as a diameter direction. A swirl bar 60 is arranged which is attached to the chain 62, and while holding a film 124 is wound around the packaged objects 126. The chain 60 includes changing means 40, 64, 70, and 85 for changing an orbit according to the size of the packaged object 126.

Description

  The present invention relates to a packaging device for shrink wrapping merchandise.

  Conventionally, as a method of packaging a plurality of products such as cans and packs, there is a packaging method in which a shrink film is wound and bundled, and the shrink film is heated and contracted and attached to the product without a gap. According to this, a plurality of products can be combined into one, and transportation, storage, display, etc. are simplified. As described above, various types of packaging apparatuses have been proposed in which a sheet-shaped shrink film is wound around a product and then heat-shrinked for packaging.

  For example, a shrink wrapping apparatus and a shrink wrapping method disclosed in Patent Document 1 wrap a can. In this shrink wrapping device, a can supply conveyor, a can conveyance conveyor arranged in series with a gap downstream from the can supply conveyor, and a circular track with a certain radius parallel to the flow direction of the conveyor It consists of a revolving bar that moves and a film transport device provided below the can supply conveyor. The operation of this shrink wrapping apparatus is as follows. First, a film cut to a predetermined length is supplied from a film transport device to a gap between the can supply conveyor and the can transport conveyor, and runs on the can transport conveyor from this gap. Next, the can is transferred from the can supply conveyer to the can conveyer, and at this time, the end of the film is sandwiched between the can and the can conveyer and moves on the can conveyer together with the can. When the trailing edge of the film is in the gap, the swivel bar passes through the gap, rolls up the trailing edge of the film, transfers it to the front of the can, overtakes the can, and descends in front of the can to end the film. Wrap the part in front of the can. Then, the film is put into a heating device and the film is heated and contracted to shrink-wrap the can.

  In addition, there is also a technique for shrink-wrapping a packaged object whose height dimension varies. As this type of packaging apparatus, the packaging apparatus and the packaging method disclosed in Patent Document 2 can automatically change the packaging size to an appropriate one while the apparatus is continuously operated. This packaging device includes a height detection means for detecting the height dimension of the packaged object, and the packaged object placed on the film and folded back in the length direction on the front end side of the packaged object. Wrapping means for covering the upper surface of the film, and cross-sealing means for sealing the end opposite to the folded portion of the film in the width direction of the film are provided. The length is controlled so as to be the length according to the detection by the height detecting means. The operation of this packaging apparatus is as follows. First, the height detection device detects the height of the package to be carried in. Next, a perforation is formed at the position of the film corresponding to the height dimension H, the article to be packaged and the film are pushed to the pushing position, and cross sealing is performed. At this time, the length dimension from the folding position of the film to the cross seal line is changed by changing the push-in amount according to the height dimension H. Next, side sealing is performed with a width dimension between the side seals S corresponding to the height dimension H. As a result, the article to be packaged is accommodated in a film having a three-sided seal and having an appropriate size, and the film is then thermally contracted to complete shrink wrapping.

JP 11-348940 A JP 2001-180607 A

  In the case of the shrink wrapping device disclosed in Patent Document 1 of the above background art, the swiveling bar rotates on a track of a certain size regardless of the size of the packaged item, so that the case of a small packaged item In this case, the distance between the swivel bar and the object to be packaged increases, and the film sags and cannot be applied cleanly. Further, since a film having the same size as a large object is used, a lot of waste is generated.

  The packaging device disclosed in Patent Document 2 changes the size of the film and the position of the cross seal according to the size of the packaged object, but the height detection means detects the height dimension of the packaged object. In addition, a cross seal position control means and a perforation formation position control means are required, the mechanism for changing the position is complicated, the structure is complicated as a whole, and the structure is expensive.

  The present invention has been made in view of the problems of the background art described above, and can be changed to a packaging height suitable for the size of the packaged object with a simple structure, and can be efficiently packaged. An object of the present invention is to provide a wrapping apparatus that winds a film and can be packaged cleanly and compactly.

  The present invention is to shrink-wrap the packaged article by shrinking the film by shrinking the film by heating and shrinking the article to be wrapped around the film in a vertical direction with a film for shrink-wrapping. It is a packaging device. The packaging apparatus includes a base installed on the floor, a supply conveyor provided at one end of the base, and carrying the article to be packaged, and a gap having a predetermined width on the downstream side of the supply conveyor. A continuous conveyor for packaging and a conveyor for conveying the article to be packaged, which is continuously provided with a gap of a predetermined width on the downstream side of the packaging conveyor and provided at the opposite end of the base. It is arranged side by side so as to flow in the direction. In the vicinity of the packaging conveyor, a rotating member provided in the vertical direction of the packaging conveyor and provided in an annular shape with the flow direction of the packaging conveyor as a diameter direction, and attached to the rotating member to hold the film A swiveling bar that is wound around the article to be packaged is provided. The swivel member is provided with changing means for changing the track according to the size of the packaged object, and the packaging conveyor and the transfer conveyor are spaced at a predetermined interval in conjunction with the change of the track of the swivel member. Changing means for changing the length while maintaining the gap is provided.

  The chain is a revolving member, and the changing means for changing the trajectory includes a chain holding member fixed to the base, a plurality of fixed sprockets provided on the chain holding member, and a slide on the base. A sliding member that is movably attached and movable with respect to the chain holding member, and a plurality of movable sprockets provided on the sliding member. The chain is hung on the plurality of fixed sprockets and the plurality of movable sprockets. One of the fixed sprockets is driven by being connected to a motor, and one of the movable sprockets is urged in a direction crossing the chain to push and bend a part of the chain to obtain a predetermined tension. is there.

  The changing means for changing the lengths of the packaging conveyor and the conveying conveyor includes: each conveyor holding member fixed to the base; a plurality of conveyor rolls provided on each conveyor holding member; Each sliding member is slidably attached to a table and is movable with respect to the conveyor holding member, and a plurality of movable rolls provided on each sliding member. A conveyor belt is hung on the plurality of conveyor rolls and the plurality of movable rolls. The sliding members of the packaging conveyor and the transporting conveyor are connected to each other by a connecting member, and the connecting member moves in conjunction with the sliding member that changes the track of the chain.

  The packaging apparatus of the present invention can wind the film with a suitable operation by changing the structure of the belt conveyor and the swivel bar in accordance with the size of the article to be packaged, and can be packaged neatly. The film can be cut and packaged in a size suitable for the size of the object to be packaged, and waste of the film can be eliminated.

It is a front view of the packaging apparatus of one Embodiment of this invention. It is the schematic which shows the state which packages the to-be packaged object of the packaging apparatus of one Embodiment of this invention. It is the schematic which shows the state which packages the to-be-packaged goods smaller than FIG. 2 of the packaging apparatus of one Embodiment of this invention. FIG. 4 is a partially enlarged front view of the packaging device of FIG. 3. It is the schematic which shows the state which packages the to-be-packaged goods smaller than FIG. 2 of the packaging apparatus of one Embodiment of this invention larger than FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5 show an embodiment of the present invention, and a packaging device 10 of this embodiment is provided with a base 12 that is a frame body installed on the floor, and the bottom surface of the base 12 has a floor. There are provided a leg portion 14 standing upright and a caster 16 used for movement.

  On the upper surface of the base 12, a supply conveyor 18 that is provided at one end of the base 12 and carries an article to be packaged, a packaging conveyor 20 that is continuous downstream of the supply conveyor 18, and a packaging conveyor Conveying conveyors 22 that are provided at the end of the base 12 opposite to the downstream side of the base 20 and carry the articles to be packaged are arranged so as to sequentially flow in one direction. A gap 24 having a predetermined width is provided between the supply conveyor 18 and the packaging conveyor 20, and a gap 26 having a predetermined width is provided between the packaging conveyor 20 and the transporting conveyor 22.

  The supply conveyor 18 is attached to a conveyor holding plate 30 attached to the end of the base 12. The conveyor holding plate 30 is a plate body that is long in the direction along the flow direction of the supply conveyor 18 and is provided facing the vertical direction. A plurality of conveyor rolls 32 are attached to predetermined positions on one side of a conveyor holding plate 30 that is a conveyor holding member, and a conveyor belt 34 is hung on each conveyor roll 32. One of the conveyor rolls 32 is connected to a motor 36 and driven.

  The packaging conveyor 20 is attached to a conveyor holding plate 38 that is a conveyor holding member attached to the center of the base 12 and a sliding plate 40 that is a sliding member that slides relative to the conveyor holding plate 38. . The conveyor holding plate 38 is a plate that is long in the direction along the flow direction of the packaging conveyor 20, is provided facing the vertical direction, and a plurality of conveyor rolls 42 are attached thereto. The sliding plate 40 is smaller than the conveyor holding plate 38 and is attached to the downstream end of the sliding plate 40 so as to be slidable in parallel with the flow direction of the packaging conveyor 20. A movable roll 44 located on the downstream end of the packaging conveyor 20 and a movable roll 46 located on the upstream side below the movable roll 44 are attached to the sliding plate 40. A conveyor belt 45 is hung on the conveyor roll 42 and the movable rolls 44 and 46. One of the conveyor rolls 42 is connected to and driven by a motor 47.

  The conveyor 22 is a conveyor holding plate 48 that is a conveyor holding member attached to the end of the base 12 opposite to the supply conveyor 18, and a sliding member that slides relative to the conveyor holding plate 48. It is attached to the sliding plate 50. The conveyor holding plate 48 is a long plate body along the flow direction of the transfer conveyor 22, is provided facing the vertical direction, and a plurality of conveyor rolls 52 are attached thereto. The sliding plate 50 is smaller than the conveyor holding plate 48, and is attached to the upstream side of the conveyor holding plate 48 so as to be slidable in parallel with the flow direction of the conveying conveyor 22. A movable roll 54 located at the upstream end of the conveyor 22 and a movable roll 56 located downstream from the movable roll 54 are attached to the sliding plate 50. A conveyor belt 57 is hung on the conveyor roll 52 and the movable rolls 54 and 56. One of the conveyor rolls 52 is connected to and driven by a motor 58.

  A swiveling bar 60 that rotates around the packaging conveyor 20 is provided in the vicinity of the packaging conveyor 20. The swivel bar 60 is attached to an annular chain 62 that is a swivel member that rotates around a central axis that intersects the flow direction of the packaging conveyor 20. The chain 62 is a chain holding plate 64 that is a chain holding member attached to the lower side of the packaging conveyor 20 of the base 12, and slides in the vertical direction with respect to the chain holding plate 64 that is attached to the upper side of the packaging conveyor 20. It is attached to a sliding plate 66 which is a possible sliding member.

  The chain holding plate 64 is a long plate that is fixed to the lower end portion of the conveyor holding plate 38 by a connecting member 68, has a plate surface along the flow direction of the packaging conveyor 20, and is provided in the vertical direction. The lower end portion 64 a of the chain holding plate 64 is a horizontal straight line located below the lower end portion of the conveyor holding plate 38, and the upstream side edge portion 64 b is a vertical line that substantially coincides with the upstream end portion of the packaging conveyor 20. The upper end portion 64c is positioned above the packaging conveyor 20 and formed in the horizontal direction, and the downstream side edge portion 64d is a vertical straight line that substantially coincides with the downstream end portion of the packaging conveyor 20. is there. A corner portion surrounded by the upper end portion 64c and the downstream side edge portion 64d is cut out in an L shape. The lower end portion 64 a and the upper end portion 64 c of the chain holding plate 64 are fixed to the base 12.

  The chain holding plate 64 is provided with five fixed sprockets 70 that guide the chain 62. Of the five fixed sprockets 70, the four fixed sprockets 70 are fixed at substantially equal intervals in the horizontal direction at a position below the center of the chain holding plate 64. The remaining one fixed sprocket 70 is attached to the portion of the chain holding plate 64 protruding upward from the attached conveyor holding plate 38 on the upstream side in the horizontal direction of the packaging conveyor 20.

  At the center of the chain holding plate 64, a notch groove 72 having a constant width is formed in the vertical direction from the center of the lower end portion 64a. The notch groove 72 is provided with a sliding plate 74 that is a sliding member slidable in the notch groove 72. The sliding plate 74 is formed in an isosceles triangle with both ends projecting in the width direction of the notch groove 72, and a projecting part inserted into the notch groove 72 is provided at the center. A movable sprocket 76 is provided. At the lower end of the sliding plate 74, guide bars 78 extending downward are provided at both ends. An air cylinder 80 is provided at the center of the lower end portion of the sliding plate 74, the air cylinder 80 is positioned substantially vertically downward, and the lower end portion is fixed to the horizontal frame portion of the base 12. Is biased upward with a constant force. A cylindrical guide member 82 that slidably holds the guide rod 78 is attached in the middle of the guide rod 78, and the pair of guide members 82 are horizontal frame portions provided at a predetermined height of the base 12. It is fixed to. When a downward force is generated on the sliding plate 74, the air cylinder 80 is pushed in, and the sliding plate 74 moves downward along the notch groove 72.

  A pair of guide bars 84 are mounted substantially vertically above the packaging conveyor 20 of the base 12, and the sliding plate 66 can slide on the pair of guide bars 84 via a cylindrical guide member 86. Is attached. The sliding plate 66 is provided continuously to the horizontal rectangular portion 66a that is long in the direction parallel to the upper end portion 64c of the chain holding plate 64 and the downstream end portion of the horizontal rectangular portion 66a. A long vertical rectangular portion 66b is provided in a perpendicular direction, and is formed in an L shape. The sliding plate 66 can move up and down along the guide rod 84. When the sliding plate 66 is positioned below, the horizontal rectangular portion 66a is positioned parallel to the upper end portion 64c of the chain holding plate 64, and the vertical rectangular portion 66b is The chain holding plate 64 is fitted into a notched portion surrounded by the upper end portion 64c and the downstream side edge portion 64d.

  The sliding plate 66 is provided with three movable sprockets 85 that guide the chain 62. One fixed sprocket 85 is attached to the upstream end of the horizontal rectangular portion 66a of the sliding plate 66, and the other one is attached in the vicinity of a corner portion formed by the horizontal rectangular portion 66a and the vertical rectangular portion 66b. The remaining one is provided at the lower end of the vertical rectangular portion 66b.

  A linear notch 88 having a constant width is provided near the position where the movable sprocket 85 is attached at the lower end of the sliding plate 66 and the vertical rectangular portion 66b. The notch groove 88 is formed along a slope that goes upward as it goes upstream from the lower end portion on the downstream side. A sliding member 90 that is movable along the notch groove 88 is provided inside the notch groove 88. A connecting member 92 is attached to the sliding member 90. The connecting member 92 is a bar member that is bent into a substantially U-shaped trapezoidal shape, and the sliding member 90 is attached near the center of the upper base of the trapezoid. The upstream end 92 a of the connecting member 92 is connected to the sliding plate 40 of the packaging conveyor 20, and the downstream end 92 b is connected to the sliding plate 50 of the transporting conveyor 22. As the connecting member 92 moves, the sliding plate 40 and the sliding plate 50 move while maintaining a certain distance from each other. As a result, a gap 26 having a predetermined width is maintained between the packaging conveyor 20 and the transfer conveyor 22.

  A shaft member 94 is provided at the upper end of the horizontal rectangular portion 66 a of the sliding plate 66. The shaft member 94 extends upward substantially vertically, and a male screw is formed on the side peripheral surface of the shaft member 94, and the bearing portion 96 is fixed to a horizontal frame portion provided at the upper end portion of the base 12. Is inserted. A female screw 100 is provided above the bearing member 96 of the shaft member 94. The female screw 100 is connected to a motor 98 provided in the vicinity and rotates around its axis. When the female screw 100 is rotated by the motor 98, the shaft member 94 moves up and down, and the sliding plate 66 moves up and down, and an arbitrary screw is obtained. The rotation can be stopped at a position and locked at an arbitrary height.

  A chain 62 is hung on the five fixed sprockets 70 of the chain holding plate 64, the movable sprocket 76 of the sliding plate 74, and the three movable sprockets 85 of the sliding plate 66. One downstream of the fixed sprocket 70 is connected to and driven by the motor 102. A swiveling bar 60 is provided at two positions of the chain 62 that are spaced apart from each other at equal intervals so as to lock a film 124 described later and cover the object to be accommodated.

  A film supply device 104 is provided below the supply conveyor 18. The film supply device 104 is provided with a film supply device holding plate 106 which is a holding member fixed to the base 12, and the film supply device holding plate 106 is a plate body which is long in one direction and is provided facing the vertical direction. It has been. One end of the film supply device holding plate 106 in the longitudinal direction is located in the vicinity of the gap 24 between the supply conveyor 18 and the packaging conveyor 20, and the opposite end is along an inclination that goes downward as it goes upstream. Is formed.

  A film supply conveyor 108 is provided in a portion of the film supply apparatus holding plate 106 adjacent to the gap 24. A plurality of conveyor rolls 110 are attached to the film supply apparatus holding plate 106, and a conveyor belt 112 is hung on the conveyor rolls 110 to form a film supply conveyor 108. One of the conveyor rolls 110 is connected to and driven by the motor 114 and flows from the lower side on the upstream side of the supply conveyor 18 toward the first gap 24. On the upstream side of the film supply conveyor 108 with respect to the film supply device holding plate 106, a pair of film holding rollers 116 that are opposed to each other in a vertical direction and that are fed while holding a film 124 stretched with a constant force are provided at predetermined intervals. Two are opened, that is, two pairs are provided. One of the film holding rollers 116 is connected to and driven by a motor 118. While two pairs of film holding rollers 116 are provided at a predetermined interval, a cutting roll 120 for cutting the film 124 to a predetermined length is provided, and the cutting roll 120 is connected to a motor 122 and driven. ing.

  Next, operation | movement of the packaging apparatus 10 of this embodiment is demonstrated based on FIG. First, a roll of a film 124 (not shown) is set in the vicinity of the film supply device 104, the end of the film 124 is pulled out from the roll, and is fed while being held by two pairs of film holding rollers 116, and is later cut by a cutting roll 120. Cut when a predetermined length is drawn. The film 124 is conveyed by the film supply conveyor 108, and the leading end exits from the gap 24 between the supply conveyor 18 and the packaging conveyor 20 and is fed out toward the packaging conveyor 20.

  Next, an article to be packaged is placed on the supply conveyor 18 and moved. Here, the packaged object is a plurality of large plastic bottles 126 in which beverages and the like are placed. The PET bottle 126 moves over the gap 24 to the packaging conveyor 20. At this time, the end of the film 124 is sandwiched between the packaging conveyor 20 and the bottom of the PET bottle 126, and the packaging conveyor 20 is moved while being sandwiched. At the same time, the film 124 is pulled out from the film supply conveyor 108. The swivel bar 60 of the chain 62 passes through the first gap 24 with the opposite end held between the PET bottles 126 in the film supply conveyor 108. Then, the opposite end of the film 124 moves upward of the PET bottle 126 with the movement of the swivel bar 60, passes the PET bottle 126 and passes through the gap 26 between the packaging conveyor 20 and the transporting conveyor 22. And it moves below the conveyor 20 for packaging. At this time, the end portion of the film 124 is inserted into the gap 26. There, the PET bottle 126 was transported by the packaging conveyor 20 and moved to the transport conveyor 22 over the gap 26. At this time, the end of the film 124 was initially sandwiched between the bottoms of the PET bottle 126. It is sandwiched between the outer sides of the ends, and the periphery of the PET bottle 126 is wound around the film 124 in the vertical direction. The PET bottle 126 is transported by the transporting conveyor 22 in a state of being wound around the film 124, and is put into a heating device (not shown) to be heated, and the film 124 is thermally contracted to be in close contact with the PET bottle 126, so that shrink wrapping can be performed.

  Next, another packaging operation of the packaging apparatus 10 of this embodiment will be described based on FIGS. 3 and 4. Here, the packaged object is a plurality of small cans 130 in which beverages or the like are placed, and is smaller than the PET bottle 126 packaged in FIG. Therefore, the trajectory of the swivel bar 60 is lowered according to the size of the can 130. First, the motor 98 provided at the upper end portion of the base 12 is rotated to move the shaft member 94 downward, and the sliding plate 66 is moved down to the sliding plate 66-1 indicated by a two-dot chain line in FIG. Move to. As a result, the three movable sprockets 85 attached to the sliding plate 66 move downward to the movable sprocket 85-1 indicated by a two-dot chain line, and the chain 62 to which the swiveling bar 60 is attached is slightly above the can 130. Orbit passing through. Although the chain 62 has an extra length, the movable sprocket 76 urged upward by the air cylinder 80 rises, the chain 62 is stretched with a suitable force, and rotates smoothly. To pass a little above.

  When the sliding plate 66 is lowered to the sliding plate 66-1, the sliding member 90 provided in the notch groove 88 formed in the sliding plate 66 moves horizontally to the upstream side to the sliding member 90-1. The connecting member 92 moves to the connecting member 92-1 together with the sliding member 90. The sliding plate 40 of the packaging conveyor 20 and the sliding plate 50 of the transporting conveyor 22 connected to the connecting member 92 are maintained up to the sliding plate 40-1 and the sliding plate 50-1 while maintaining a certain distance from each other. Moving. The movable rolls 44 and 46 attached to the sliding plate 40 move upstream to the movable roll 44-1 and the movable roll 46-1, and the packaging conveyor 20 is shortened. Since the conveyor roll 42 attached to the conveyor holding plate 38 does not move, the conveyor belt 45 does not sag, is stretched with an appropriate force, and rotates smoothly. Moreover, the movable rolls 54 and 56 attached to the sliding plate 50 move to the upstream side to the movable roll 54-1 and the movable roll 56-1, and the conveyor 22 for conveyance becomes long. Since the conveyor roll 52 attached to the conveyor holding plate 48 does not move, the conveyor belt 57 does not sag, is stretched with an appropriate force, and rotates smoothly. The gap 26 between the packaging conveyor 20 and the transfer conveyor 22 moves slightly upstream while maintaining a predetermined width, and the packaging conveyor 20 is made smaller in accordance with the size of the can 130. The film supply device 104 sets the rotation speed of the cutting roll 120 or the feed speed of the film holding roller 116 to an appropriate one, supplies the film 124 cut to a length suitable for the can 130, and eliminates waste of the film 124. . Further, since the swivel bar 60 is changed to a small track that passes in the vicinity of the can 130 according to the small film 124, the swirl bar 60 securely holds the film 124 and is wound around the can 130.

  Next, the operation of another packaging and packaging apparatus 10 of this embodiment will be described with reference to FIG. Here, the packaged items are a plurality of PET bottles 128 in which beverages or the like are placed, which are smaller than the PET bottle 126 in FIG. 3 and larger than the can 130 in FIG. The motor 98 provided at the upper end of the base 12 is rotated to move the sliding plate 66 to the middle between FIGS. As a result, the chain 62 to which the swivel bar 60 is attached becomes a track passing slightly above the plastic bottle 128. The movable sprocket 76 urged upward by the air cylinder 80 is located in the middle of FIGS. 2 and 3, the chain 62 is tensioned with a suitable force and rotates smoothly, and the swivel bar 60 is moved to the PET bottle 128. To pass a little above.

  The lengths of the packaging conveyor 20 and the transporting conveyor 22 are changed according to the position of the sliding plate 66, and the gap 26 between the packaging conveyor 20 and the transporting conveyor 22 moves to a predetermined position while maintaining a predetermined width. To do. The film supply device 104 sets the rotation speed of the cutting roll 120 or the feed speed of the film holding roller 116 to an appropriate one, supplies the film 124 cut to a length suitable for the PET bottle 128, and Eliminate waste.

  According to the packaging device 10 of this embodiment, the film 124 can be wound around the packaging object in various sizes and shapes such as a large plastic bottle 126 and a small can 130, and the packaging is neatly performed. be able to. The trajectory of the swivel bar 60 can be changed according to the size of the object to be packaged, the length of the packaging conveyor 20 can be changed, and the film 124 can be packaged neatly without sagging or wrinkling. it can. Changing the track of the chain 62 and changing the lengths of the packaging conveyor 20 and the transporting conveyor 22 are performed in conjunction with each other, and a gap 26 having a certain length is maintained between the packaging conveyor 20 and the transporting conveyor 22. Therefore, there is no hindrance to the rotation of the chain 62, and the movement of the article to be packaged from the packaging conveyor 20 to the conveying conveyor 22 becomes smooth. In addition, the film 124 can be cut and packaged in a size suitable for an article to be packaged, and waste of the film 124 can be eliminated. Since the film 124 is heat-shrinked and adheres to the package, the film 124 may be other than the PET bottles 126 and 128 and the can 130. The shape of the package is free and can correspond to various shapes. A plurality of items to be packaged can be combined into one, and transportation, storage and management are facilitated.

  In addition, the packaging apparatus of this embodiment may be anything other than a plastic bottle or can containing drinking water, and the number and shape of packaging can be freely changed. The number and arrangement of each conveyor roll and sprocket can be freely changed. The number of swiveling bars attached to the chain can be appropriately changed to other than two. The structure of the film supply device may be other than the above-described embodiment as long as the film is reliably cut into an arbitrary length and supplied. The means for pushing the chain and tensioning it with an appropriate force may be other than the air cylinder. The moving means of the sliding plate for changing the chain trajectory may be means other than the male screw and female screw formed on the shaft member.

DESCRIPTION OF SYMBOLS 10 Packaging apparatus 12 Base 18 Supply conveyor 20 Packaging conveyor 22 Conveyor 24,26 Gap 30,38,48 Conveyor holding plate 32,42,52,110 Conveyor roll 34,45,57,112 Conveyor belt 36, 47, 58, 98, 102, 114, 118, 122 Motor 40, 50, 66, 74 Slide plate 44, 46, 54, 56 Movable roll 60 Swivel bar 62 Chain 64 Chain holding plate 68, 92 Connecting member 70 Fixed sprocket 72, 88 Notch groove 76, 85 Movable sprocket 78, 84 Guide rod 80 Air cylinder 82, 86 Guide member 90 Sliding member 94 Shaft member 96 Bearing portion 100 Female screw 104 Film supply device 106 Film supply device holding plate 108 For film supply Conveyor 116 Film holding roller 120 Cutting Roll 124 Film 126, 128 PET bottle 130 can

Claims (3)

In a packaging device that shrinks and wraps the article to be packaged by shrinking the film by heating and shrinking the film by winding the article to be wrapped around in a vertical direction with a film for shrink wrapping, and winding the ends with an arbitrary width.
A base installed on the floor, a supply conveyor provided at one end of the base for carrying the article to be packaged, and a continuous packaging provided with a gap of a predetermined width downstream of the supply conveyor Conveying conveyor and a conveying conveyor that is provided at the opposite end of the base and that conveys the article to be packaged flow in one direction in order, with a gap of a predetermined width provided downstream of the packaging conveyor. A swiveling member that is provided side by side and that is provided in the vicinity of the packaging conveyor in a vertical direction with the flow direction of the packaging conveyor as a diametrical direction is attached to the swiveling member. A revolving bar for holding the film and winding it around the article to be packaged, and the swiveling member is provided with changing means for changing the track according to the size of the article to be packaged, Previous Transport conveyor, the packaging device, wherein a changing means for changing the in conjunction with the change of the raceway length while maintaining a gap of a predetermined distance of the pivot member.   The swivel member is a chain, and the changing means for changing the trajectory is a chain holding member fixed to the base, a plurality of fixed sprockets provided on the chain holding member, and a slide on the base A sliding member movably attached to the chain holding member, and a plurality of movable sprockets provided on the sliding member, wherein the chain includes the plurality of fixed sprockets and the plurality of the sprockets. One of the fixed sprockets is driven by being connected to a motor and driven, and one of the movable sprockets is urged in a direction crossing the chain, and a part of the chain is pushed to bend and bent. The packaging device according to claim 1, wherein a tension is obtained. The changing means for changing the lengths of the packaging conveyor and the conveying conveyor includes: each conveyor holding member fixed to the base; a plurality of conveyor rolls provided on each conveyor holding member; Each sliding member slidably mounted on a table and movable relative to the conveyor holding member, and a plurality of movable rolls provided on each sliding member, wherein the plurality of conveyor rolls and the plurality A conveyor belt is applied to each movable roll, and the sliding members of the packaging conveyor and the transporting conveyor are connected to each other by a connecting member, and the connecting member is connected to the sliding member that changes the track of the chain. The packaging device according to claim 1 or 2, which moves in conjunction with the packaging device.

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