JP2013100129A - Film packaging apparatus and film package body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film packaging apparatus able to efficiently and automatically package an article to be packaged, which is an annular member such as a bearing retainer, and able to also easily unseal the packaged article, and to provide a film package body.SOLUTION: The film packaging apparatus comprises: a packaging jig 40 held so as to be supportable by itself while many retainers 14, being annular members, are fitted into a pillar-like hold member 46; a film molding device 32 located above a belt conveyor 34 for conveying the packaging jig 40 and configured to place heat shrinkable film 12 over each retainer 14; a welding device 50 configured to weld an opening part of the heat shrinkable film 12 placed over the retainer 14; a cutting member 53 configured to separate the heat shrinkable film 12 placed over each retainer 14; a perforating blade 56 configured to form an unsealing perforation line 16 in the heat shrinkable film 12 along the longitudinal direction of the hold member 46; and a heat-shrinking device 60 configured to heat and shrink the welded and cut heat shrinkable film 12.

Description

  The present invention relates to a film packaging apparatus for packaging an assembly of annular members such as a retainer of a bearing and a film packaging body using the same.

  Conventionally, for example, when a retainer for a bearing is manufactured and supplied to a bearing assembly factory or the like, a certain amount is stacked and packaged for delivery. In this packaging method, a large number of retainers are fitted into a resin tube and stacked, and a certain amount is stacked and stacked in a rod shape so that it does not collapse when wrapped in a wrapping material such as rustproof paper. After that, the tube was pulled out and both ends were closed with a packaging material to complete the packaging.

  On the other hand, as disclosed in Patent Documents 1 and 2 as a packaging method for packaging a plurality of products together, the products are wrapped in a heat-shrinkable packaging film and then thermally shrunk so that the plurality of products are closely integrated. Various packaging methods are provided.

JP 2004-315030 A JP 2011-116410 A

  However, the operation of wrapping the bearing retainer with a wrapping material such as rust-proof paper has to be performed manually, which takes man-hours and time, and costs the rust-proof paper itself.

  In addition, in the case of the packaging bodies disclosed in Patent Documents 1 and 2, the products themselves to be packaged are stably self-supported or stacked, and it is easy to transport a plurality of pieces integrally with a belt conveyor for packaging. However, the retainer of the bearing cannot be transported as it is in a stably stacked state, and automatic packaging is difficult. Furthermore, when opening unnecessarily, a large number of retainers are scattered, and the opening operation must be carefully performed.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the background art. A film packaging apparatus and a film that can efficiently and automatically wrap annular members such as bearing retainers and can be easily opened. An object is to provide a package.

  The present invention relates to a packaging jig in which a large number of annular objects to be packaged are held in a state where they are fitted to columnar holding members, a belt conveyor for conveying the packaging jig, and a male belt conveyor. A film molding machine for drawing the heat-shrinkable film from a film roll positioned above and winding the heat-shrinkable film to cover the object to be packaged, and an opening of the heat-shrinkable film covering the object to be packaged A welding device that welds a portion, a cutting member that separates and cuts the heat-shrinkable film placed on the package, and a length of the holding member on the heat-shrinkable film placed on the package A perforation blade that forms an opening perforated line along the direction, and a heat shrink device that heats and shrinks the heat shrinkable film that has been welded and cut at the opening to closely contact the packaged object are provided. It is a film packaging equipment you are.

  The perforation blade is provided along the welding device and moves integrally with the welding device. The holding member is erected on a packaging jig, and the base portion of the packaging jig is placed on the belt conveyor and conveyed.

  In addition, the present invention is a state in which a large number of annular objects to be packaged are coaxially overlapped and closely packed by a heat-shrinkable film, and an opening sewing machine wire for opening is formed in the stacking direction of the objects to be packed This is a film package.

  A plurality of the unsealed sewing machine wires are formed. Furthermore, the picking allowance by the said heat-shrinkable film may be formed along the said opening sewing machine line. The annular member is a bearing retainer, a piston ring, or the like.

  The film packaging apparatus and the film packaging body of the present invention can stably and efficiently wrap an annular member such as a retainer of a bearing, and can be easily opened without breaking each packaged member even when opened. Can do. Further, since the materials required for packaging are small and inexpensive, and automation is easy, packaging costs can be greatly reduced.

It is a front view of the film packaging apparatus of one Embodiment of this invention. It is a right view of the film packaging apparatus of this embodiment. It is a schematic front view which shows the film supply part of the film packaging apparatus of this embodiment. It is a schematic right view which shows the film supply part of the film packaging apparatus of this embodiment. It is a schematic front view which shows the film packaging part of the film packaging apparatus of this embodiment. It is a schematic right view which shows the film packaging part of the film packaging apparatus of this embodiment. It is the top view (a) which shows the fusing part of the film packaging apparatus of this embodiment, and a right view (b). It is a schematic front view which shows the heat contraction apparatus of the film packaging apparatus of this embodiment. It is a front view which shows the packaging process of the film package of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1-9 shows one Embodiment of the film packaging body of this invention, As shown in FIG. 9, this film packaging body 10 is a package by the heat-shrinkable film 12 which consists of thermoplastic resins. It is formed by wrapping a retainer 14 and shrinking the heat-shrinkable film 12 by heat. The retainer 14 is an annular fixed metal member, and is packaged in a state in which a plurality of the same shape are stacked.

  In the film package 10, the welded portion 12a of the heat-shrinkable film 12 is formed long in the stacking direction in a state where the retainer 14 is packaged, and the heat-shrinkable film 12 is closely attached to the retainer 14 by heat shrinkage. The heat-shrinkable film 12 is formed with an opening sewing machine wire 16 for opening in parallel along the welded portion 12a where the opening is welded, and a knob allowance 18 formed between the welded portion 12a and the cut portion 12b. Has been. The unsealed sewing machine line 16 is formed in the stacking direction along the side surface of the retainer 14.

  Next, the film packaging apparatus 20 for packaging the retainer 14 with the heat-shrinkable film 12 will be described based on the drawings. As shown in FIGS. 3 and 4, the film wrapping apparatus 20 is configured such that a film roll 22 obtained by winding a long heat-shrinkable film 12 folded in a roll shape is set on a roll attachment shaft 24. Are provided with a plurality of guide rollers 26 for feeding the heat-shrinkable film 12 fed out from a predetermined position. On the downstream side of the guide roller 26, a tension adjusting roller 28 is provided. On the downstream side of the tension adjusting roller 28, an engagement roller 30 that engages and opens one side of the heat-shrinkable film 12 folded in half. And a turning roller 34 for feeding the heat-shrinkable film 12 to the film former 32 is provided downstream of the engaging roller 30.

  The film packaging apparatus 20 includes a belt conveyor 34 that is located below the film molding machine 32 and provided in the horizontal direction. The belt conveyor 34 extends to the lower side of a welding apparatus 50 described later of the film packaging apparatus 20, and guide plates 36 are provided in parallel on both sides along the longitudinal direction of the belt conveyor 34. The belt conveyor 34 is driven by a motor (not shown), and a packaging jig 40 holding the retainer 14 is inserted between the film molding machine 32 on which the heat-shrinkable film 12 is mounted, and the heat-shrinkable film 12 is covered. The packaged jig 40 is sent between the welding devices 50.

  As shown in FIGS. 5 and 6, the film molding machine 32 is composed of a pair of right-angled triangular plates arranged in parallel to each other in a vertical plane. The apex 32a at which each side of the film molding machine 32 intersects at right angles is located above the downstream side in the packaging direction, the horizontal side 32b is located above in parallel with the belt conveyor 34, and the vertical side 32c is in the packaging direction. It is located between the apex 32a and the belt conveyor 34 which are perpendicular to the downstream side. A pair of guide plates 38 are provided in parallel in the vicinity of the upper side 32 b of the film forming device 32. The guide plate 38 holds and guides the heat-shrinkable film 12 so that the heat-shrinkable film 12 folded back by the film molding machine 32 does not come into contact with the retainer 14 during conveyance. Above the film molding machine 32, an interval adjusting device 37 for adjusting the interval between the two plates is provided, and can be adjusted in accordance with the size of the retainer 14 to be packaged. A pair of doors 33 are provided on the front side of the film forming device 32 so as to be openable and closable, and maintenance of the film forming device 32 and the inside thereof can be performed in the open state.

  As shown in FIG. 9, a packaging jig 40 that is placed on the belt conveyor 34 and conveys the retainer 14 includes a base portion 42 that is placed on the belt conveyor 34 and a fitting projectingly provided on the base portion 42. The retainer holding cylinder 46 into which the retainer 14 is inserted is fitted to the fitting shaft 44. A support member 48 that restricts the position of the retainer holding cylinder 46 is fitted to the fitting shaft 44.

  As shown in FIG. 7, a welding device 50 positioned parallel to the vertical side 32 c is provided on the downstream side in the film feeding direction of the film molding device 32, and the welding device 50 keeps the heat-shrinkable film 12 facing to be constant. The welding part 52 welded by the width | variety and the cutting member 53 which cut | disconnects the heat-shrinkable film 12 welded are provided. The welding portion 52 has a pair of heating portions 52a and a pair of receiving portions 52b facing each other, and melts and joins the thermoplastic heat-shrinkable film 12. The cutting member 53 includes a perforation blade provided between the pair of receiving portions 52b, and cuts between the welded portions of the heat-shrinkable film 12 that has been welded. The perforated edge of the cutting member 53 is provided so as to be insertable between the pair of heating parts 52a, and reliably cuts the heat-shrinkable film 12. On both outer sides of the pair of welded portions 52a, plate-like film pressers 54 are disposed in parallel and are provided so as to be able to come into contact with the receiving portion 52b and be retracted.

  An opening perforation blade 56 that forms an opening perforation along the welded portion 12 a of the packaged heat-shrinkable film 12 is integrally provided on the outer side of the film presser 54. A film presser 54 is also provided outside the opening perforation blade 56. The heating part 52a and the pair of receiving parts 52b of the welding device 50 are provided so as to face each other and be close or retractable by a driving device such as an air cylinder (not shown).

  In addition, when the space between the welded portion 52 and the cutting member 53 is widened, the interval from the welded portion 12a to the cut portion 12b of the heat-shrinkable film 12 after packaging is widened, and the knob allowance 18 can be formed. Since the picking allowance 18 only needs to be on the side of the perforation 16, the interval between the welded portion 52 and the cutting member 53 is preferably wide on the side where the opening perforation blade 56 is provided.

  On the downstream side of the welding device 50, a feed section surrounded by four sides is provided, and a belt conveyor 58 is inserted into the feed space, and the retainer 14 wrapped in the heat-shrinkable film 12 together with the packaging jig 40. Is formed so that it can pass through.

  On the downstream side of the film wrapping apparatus 20, a heat shrink device 60 is provided adjacent to the belt conveyor 58 of the feeding section and having an entrance opened and surrounded on all sides. The heat shrink device 60 is open at the entrance and the outlet, and a belt conveyor 62 is provided adjacent to the belt conveyor 58. The heat shrink device 60 is provided with a blower motor 64 and a blower fan 68 at the top, and a heater 68 is disposed around the blower fan 66 so that hot air circulates in the heat shrink device 60.

  The packaging method by the film packaging apparatus 20 of this embodiment first assembles the packaging jig 40 as shown in FIG. Assembling is performed by fitting a support member 48 for position restriction to the fitting shaft 44 of the base portion 42, and then fitting the retainer holding cylinder 46 to the fitting shaft 44. In this state, the retainer 14 which is an object to be packaged is fitted into the retainer holding cylinder 46 and stacked. As shown in FIG. 9B, when the retainer 14 is fully stacked up to the length of the retainer holding cylinder 46, the retainer holding cylinder 46 is disposed upstream of the belt conveyor 34 as shown in FIGS. Is mounted on the packaging jig 40, and the base portion 42 of the packaging jig 40 is placed on the upstream end of the belt conveyor 34.

  After or before this, the film packaging apparatus 20 is activated and the belt conveyor 34 is driven. Then, the packaging jig 40 holding the retainer 14 is conveyed between the film formers 32, and the retainer holding cylinder 46 of the packaging jig 40 is interposed between the two-fold heat-shrinkable film 12 reversed by the film former 32. insert. At this time, the two-fold heat-shrinkable film 12 is pulled out from the film roll 22 and fed out through the guide roller 26 and the tension adjusting roller 28, and one of the two folds is engaged with the engagement roller 30 and opened. The film is spread by the film forming machine 32 by the turning roller 34. The heat-shrinkable film 12 whose front and back are reversed on the inclined surface of the film forming device 32 is positioned inside the film forming device 32 with the fold fold 12c positioned above the film forming device 32. Further, a packaging jig 40 holding the retainer 14 enters inside thereof, and the retainer 14 is positioned between the heat-shrinkable film 12 folded in two, thereby enabling packaging.

  Further, when the belt conveyor 34 advances, the retainer holding cylinder 46 of the packaging jig 40 holding the retainer 14 comes into contact with the welded portion 12a of the heat shrinkable film 12, and the heat shrinkable film 12 is filmed as the belt conveyor 34 moves. Pull out from the roll 22. When the packaging jig 40 holding the retainer 14 passes through the welding device 50, the belt conveyor 34 stops and the welding device 50 operates. In the welding apparatus 50, the heating part 52a and the receiving part 52b facing each other move in the proximity direction, and the overlapping heat shrinkable films 12 are sandwiched and welded. At the same time, the heat-shrinkable film 12 is cut between the two rows of welded portions 12 a of the heat-shrinkable film 12 by the cutting member 53. Thereby, as shown in FIG. 9C, the retainer 14 fitted to the retainer holding cylinder 46 is packaged in the heat-shrinkable film 12. At this time, simultaneously with the welding of the heat-shrinkable film 12 by the welding device 50, the opening sewing line 16 and the picking allowance 18 by the opening sewing perforation blade 56 are formed in the vicinity of the welding portion 12a. The opening perforation blades 56 may be provided as a pair along the film pressers 54 on both sides of the welding device 50.

  When the welding and cutting of the heat-shrinkable film 12 are completed, the belt conveyor 58 on the downstream side of the film packaging apparatus 20 is operated, and the packaging jig 40 is conveyed toward the heat-shrinking apparatus 60. At this time, the heat-shrinkable film 12 moves together with the packaging jig 40 by the driving of the belt conveyor 58 in the state of welding that is not contracted. Then, the packaging jig 40 is sent to the belt conveyor 62 of the heat shrink device 60. When the packaging jig 40 moves in the heat shrink device 60, as shown in FIG. 9D, the heat shrinkable film 12 is heat shrunk by the heat in the heat shrink device 60, and is moved to the retainer 14 and the retainer holding cylinder 46. In close contact.

  After passing through the heat shrink device 60, the packaging jig 40 is lowered from the belt conveyor 62, and the retainer holding cylinder 46 is removed from the packaging jig 40. Further, the retainer holding cylinder 46 is extracted from the retainer 14 shrink-wrapped by the heat-shrinkable film 12. At this time, the retainer 14 is held in close contact with the heat-shrinkable film 12, so that it does not fall apart. After removing the retainer holding cylinder 46, as shown in FIG. 9E, the heat-shrinkable film 12 at both ends of the stacked retainer 14 is folded inside the ring of the retainer 14 to complete the packaging.

  The packaged retainer 14 can be easily opened by breaking the heat-shrinkable film 12 that has been heat-shrinked along the opening sewing line 16 of the film package 10 with a handle 18. At this time, since the heat-shrinkable film 12 is heat-shrinked, the shape is stable, the retainer 14 does not fall apart, and can be safely opened.

  According to the film packaging apparatus 20 and the film packaging body 10 of this embodiment, a plurality of retainers 14 can be stacked in a simple and reliable manner, and can be easily opened. Moreover, since the packaging cost is low and moisture is difficult to enter the packaging, the rust prevention effect is also high.

  In addition, the film packaging apparatus and film packaging body of this invention are not limited to the said embodiment, As long as the member to be packaged overlaps and wraps many cyclic | annular members other than a retainer in the cylinder shape It can be used for various members. In addition to the retainer, the packaged object that is an annular member may be an engine piston ring, a large-diameter washer member, or any other object that is formed in a ring and packaged together. Any type. Furthermore, the position and number of each member of the film packaging apparatus can be changed as appropriate. As for the form of the film, a film formed in a cylindrical shape in advance other than bi-folding may be used. The position and number of opening sewing lines may be two rows so that they can be easily opened, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 10 Film packaging body 12 Heat-shrinkable film 14 Retainer 16 Opening sewing machine wire 18 Picking allowance 20 Film packaging apparatus 22 Film roll 32 Film molding machine 34,58 Belt conveyor 40 Packaging jig 42 Base part 46 Retainer holding cylinder 50 Welding apparatus 52 Welding portion 53 Cutting member 56 Unsealed perforated blade 60 Heat shrink device

Claims (7)

  A packaging jig that holds a plurality of annular members to be packaged so as to be able to stand by being fitted to a columnar holding member, a belt conveyor that conveys the packaging jig, and a position above the male belt conveyor. A film molding machine in which the heat-shrinkable film is drawn out from a film roll wound up with the heat-shrinkable film and placed on the package, and an opening of the heat-shrinkable film placed on the package are welded. A welding device, a cutting member that separates and cuts the heat-shrinkable film placed on the package, and a heat-shrinkable film placed on the package along the longitudinal direction of the holding member A perforation blade that forms an opening perforation line, and a heat shrink device that heats and shrinks the heat shrinkable film having the opening welded and cut to closely contact the packaged object are provided. Film packaging apparatus according to symptoms.   The film packaging apparatus according to claim 1, wherein the perforation blade is provided along the welding apparatus and moves integrally with the welding apparatus.   The film packaging apparatus according to claim 1 or 2, wherein the holding member is erected on a packaging jig, and a base portion of the packaging jig is transported on the belt conveyor.   In a state where a large number of annular objects to be packaged are coaxially stacked, they are tightly packed by a heat-shrinkable film, and an opening sewing machine wire for opening is formed in the stacking direction of the objects to be packaged. Characteristic film packaging.   The film packaging body according to claim 4, wherein a plurality of the opening sewing wires are formed.   The film packaging body according to claim 4 or 5, wherein a pinch allowance by the heat-shrinkable film is formed along the opening sewing machine line. The film package according to claim 4, wherein the package is a bearing retainer.

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