JPH04102204U - Packaging film cutting and welding equipment - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] Eliminates film waste during shrink wrapping.
To provide a packaging film fusing and welding device that provides a beautiful packaging form in appearance after shrink wrapping. [Structure] A heater 21 and a heat bar 20 are provided. A fusing blade 22 is provided for fusing and welding an opening of a film 5 in which a product 50 is placed between heat-shrinkable films 5. Fusing blade 2
2 is provided on the side surface of the heat bar 20 on the side of the packaged product 50.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is used in packaging equipment that shrink-wraps products with heat-shrinkable film. The present invention relates to a wearable film fusing and welding device.

0002

[Conventional technology]

Conventionally, fusing and welding of heat-shrinkable films was disclosed in Japanese Utility Model Publication No. 18429/1983. As shown, sandwich the fusing blade with a heat bar and heat the heat bar with a heater. Then, the film is fused and welded using a heated fusing blade. Also, the heat bar On both sides, there are film holders that can move up and down to hold down the film during fusing and welding. It is being

0003 Therefore, when fusing and welding the film that wraps the product, the position of the fusing blade is The film holders on both sides of the heat bar are located between the heat bars. The film will be fused at the center between the two.

0004

[Problem that the idea aims to solve]

In the case of the above conventional technology, the film wrapping the product is placed between the film holders. Since the film is cut at the central part, the film is not pressed against the product. The problem is that extra material is added to the area where the fusing blade is located, resulting in fusing. was there. This not only wastes a lot of film, but also causes heat build-up later. When shrinking, the excess film shrinks unevenly and the film after shrink-wrapping becomes There was a problem in that the appearance was undesirable.

[0005] This idea was created in view of the problems of the conventional technology mentioned above, and it Therefore, there is no wastage of film, and the packaging film has a beautiful appearance after shrink wrapping. The purpose of the present invention is to provide a film cutting and welding device.

[0006]

[Means to solve the problem]

This idea allows products to be placed between heat-shrinkable films for shrink-wrapping. The fusing blade for fusing and welding the This is a lume fusing welding device.

[0007]

[Effect]

In the packaging film fusing and welding device of this invention, the position of the fusing blade is It is installed on the side of the packaged product, and the distance between the film holder and the fusing blade is extremely large. It is designed so that there is no waste in the film that wraps the product.

[0008]

【Example】

An embodiment of this invention will be described below based on the drawings. As shown in FIGS. 1 to 4, the packaging film breaking and welding device of this embodiment has the following features: From the sealing device 1, product conveying belt 2, film feeder 3 and film opening device 4 Become. As shown in FIG. 2, the film used in this sealing device 1 is heat-shrinkable. The film 5 is folded in half and wound into a roll. A film roll 6 is attached to the film feeder 3. Also, the film opening The container 4 consists of right isosceles triangular guide plates 7 and 8 and a pair of supports 9 that hold them. The product conveyance belt 2 is inserted between the support column 9 and the guide plates 7 and 8. Information board 7 , 8 are provided parallel to each other and to the product conveyance belt 2, and are isosceles right angles. Arranged so that the hypotenuse of the triangle is 45 degrees to the direction of movement of the product conveyance belt 2. has been done. The film 5 is placed between guide plates 7 and 8 between the folded films. is inserted, the gap between the films is widened, and the front and back sides of the film 5 are The surface is reversed, and the product conveying belt 2 is further sandwiched and rotated 90 degrees in the direction of movement. The sending direction can be changed.

[0009] In the sealing device 1, a known L-shaped L sealer 10 is attached to a base frame 11. A seal holder 12 is provided at a lower position facing the roller 10. Base frame 1 1, the rotation shaft 14 is attached to the base 13 on which the sealing device 1 is attached. It is set up so that it can swing freely at the center. Furthermore, a link mechanism 15 is attached to the base frame 11. One end is connected, and this link mechanism 15 is connected to an air cylinder 16. There is.

0010 The L sealer 10 has a pipe between the heat bars 20 made of aluminum alloy or the like. A heater 21 is inserted. Furthermore, below the pipe heater 21, Among the side surfaces of the cover 20, a fusing blade 22 is provided on the side facing the packaged product during sealing. is attached with screws (not shown), and its tip extends from the lower end surface of the heat bar 20. It protrudes downward. An upper plate 2 is attached to the upper end surface of the heat bar 20 via a heat insulating material 24. 5 is attached, and the connecting piece 26 is fixed to a predetermined location on the upper plate 25 to connect it to the base frame 11. Can be connected. This pipe heater 21 has a nichrome wire 30 in the center. The glass fiber 31 is filled around it. In addition, the fusing blade 22 It is made of metal such as aluminum alloy, which has good thermal conductivity, and its surface has a coating. Has a Freon coating.

[0011] A pair of film holders 35 are attached to both sides of the L sealer 10. The film presser 35 on the side of the product to be packaged is fused. It is provided so as to face the blade 22. Furthermore, the tip of the film presser is usually The edge protrudes further toward the tip than the fusing blade 22. Film holder 3 A holding piece 36 is formed to protrude from the upper edge of the base frame 11. The pair of holding pieces 36 are connected with the base frame 11 in between by the connecting member 37 placed there. has been done. The connecting member 37 is connected to the upper surface of the base frame 11 by the coil spring 38. At the same time, the coil spring 38 is movable in the compressing direction. Ru. Therefore, the film presser 35 is moved downwardly by the coil spring 38, that is, when it is fused. The tip edge of the blade 22 is located at a position further protruding from the tip, and the tip edge is positioned upwardly. It is designed to be retractable.

0012 A product conveyance belt 41 is provided below the sealing device 1. A heat tunnel (not shown) is provided ahead of the route 41. And the product A seal holder 12 is installed so as to surround the base end of the conveyor belt 41. A heat-resistant silicone rubber receiver 46 is provided on the surface of the seal holder 45, and The blade 22 and the seal pedestal 12 are supported by a support frame 49 via a buffer spring 48. It is.

[0013] The packaging film fusing and welding device configured as described above transfers the product 50 to the product conveying belt 2. When the device is loaded and the device is started, the product 50 enters between the two-folded film 5 and the seal is removed. When it comes under the device 1, the sealing device 1 is automatically activated by a sensor (not shown). , the opening of the film 5 is sealed. Here, film 5 is the first seal The operation seals the opening in the leading edge, as shown in FIG. The side and rear parts of the The opening is sealed during operation.

[0014] The sealing operation is performed when the air cylinder 16 is activated, as shown in FIGS. 1, 3, and 4. Then, the L sealer 10 descends toward the film 5 by the link mechanism 15. . At this time, the film presser 35 first hits the film 5 and seals the film 5. While pressing the film against the holder 12, the film is placed under the biasing force of the coil spring 38. The presser foot 35 stops. However, the base frame 11 is Then, while further compressing the coil spring 38, the fusing blade 22 moves toward the film 5. The lum 5 is pressed so as to bite into the receiving part 46, and the seal 5 is melted and welded. After this, the air cylinder 16 operates in the opposite direction, and the L sealer 10 is retracted and sealed. The work is completed.

[0015] According to the packaging film cutting and welding device of this embodiment, the position of the fusing blade 22 is It is provided on the side of the cover 20 on the side of the packaged product, and the seal position between the product and the film is Nearby, remove the excess film 5 other than the part necessary to wrap the product. The amount of film is small and does not wrinkle when heated and shrunk.

[0016] Note that the shapes of the fusing blade and heat bar of this invention are not limited to the above embodiments, and may be any suitable shape. It can be set as desired, and both may be provided integrally. Also, The sealing device can be used not only with the L sealer but also with the so-called I-type sealing device. Needless to say, it is possible.

[0017]

[Effect of the idea]

This device for cutting and welding packaging films can control the position of the cutting blade for cutting and welding. Because the film is placed as close to the packaged product as possible, uneven shrinkage may occur when the film shrinks. The shrink film does not wrinkle. Therefore, it is extremely clean in shrink wrapping. It enables elegant packaging and greatly improves the quality of shrink wrapping. Also, There is little wastage of film, and packaging can be done economically and efficiently.

[Brief explanation of drawings]

FIG. 1 is a partial side view of a packaging film fusing and welding apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of the packaging device of this embodiment.

FIG. 3 is a longitudinal sectional view showing the state in which the fusing and welding apparatus of this embodiment is used.

FIG. 4 is a longitudinal cross-sectional view showing the state in which the fusing and welding device of this embodiment is used when fusing a film.

[Explanation of symbols]

1 Sealing device 5 Film 20 heat bar 22 Fusing blade 35 Film holder

Claims (1)

[Scope of utility model registration request] [Claim 1] Placing a product between heat-shrinkable films,
A packaging film fusing and welding device that welds the opening of the film with a heated fusing blade includes a heater that heats the fusing blade, and this heater is attached, and the heat of the heater is transferred to the fusing blade. 1. A packaging film fusing and welding apparatus, characterized in that a heat bar is provided, and the fusing blade is provided on a side surface of the heat bar that faces the product to be packaged.