JP2010076347A - Method of pressure-bonding film to case, pressure-bonding tool, and case with film pressure-bonded thereto - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of pressure-bonding a film to a case of three-dimensional structure dispensing with treatment of the end face of a case after pressure-bonded. <P>SOLUTION: The method of pressure-bonding the film to the case comprises placing the case on a pressure-bonding tool shaped to the shape of the case and having a heatable projecting part near the peripheral edge of the case, pressure-bonding the film to the case placed on the pressure-bonding tool, and heating the projecting part to cut the film. The pressure-bonding tool for placing the case to which the film is pressure-bonded, is constituted to be shaped to the shape of the case and to have the heatable projecting part near the peripheral edge of the case. The case is placed on the pressure-bonding tool, and after the film is pressure-bonded, the projecting part formed around the pressure-bonding tool is heated to cut the film, thus constituting the case with the film pressure-bonded thereto. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a method for pressure-bonding a film to a housing having a three-dimensional structure, and more particularly to a film pressure-bonding method that does not require processing of a housing end surface after pressure bonding.

  There is a method of coating the surface of a casing having a three-dimensional structure by pressure-bonding a painted film. In this method, the film itself is flat compared to the case where the surface of the housing having a three-dimensional structure is directly applied, so that the coating is easy and a complicated pattern can be easily formed. It also has the advantage of being easy.

  FIG. 2 is a diagram showing a conventional method of film pressure bonding to a casing. 2A shows a state in which the casing 1 and the film 2 to be crimped are supplied to the film crimping apparatus, and FIG. 2B shows the state in which the upper box 20 of the film crimping apparatus is lowered by the operation of the upper box driving unit 22. (C) shows a state in which the pressure in the space closed by the upper box 20 and the lower box 10 is reduced by the decompressor 32 and the heater 21 is heated, and (d) shows the state of the crimping table drive unit 13. The state in which the casing 1 is in close contact with the film 2 by raising the crimping table 12 on which the crimping jig 11 is placed by operation is shown in (e) where the inside of the upper box 20 is pressurized by the pressurizer 31. The state (f) shows a state in which the upper box 20 is raised by the operation of the upper box driving unit 22 and the casing 1 to which the film 2 is pressure-bonded is taken out.

  As is clear from FIG. 2D, when the film 2 is pressure-bonded to the housing 1, it is necessary to press the housing with the film 2 held. Therefore, as shown in FIG. 2F, the film 2 is pressure-bonded to the housing 1 in a state where the film 2 is connected to the held portion. Since the film holding portion is not necessary when the housing 1 is in use, the film holding portion needs to be cut after the pressure bonding.

  The film holding portion is cut by, for example, a robot arm from the side of the housing 1. FIG. 3 is a diagram showing the cutting of the film holding portion by the robot arm 40 of the prior art.

  Further, Patent Document 1 describes a method for manufacturing a thermoplastic resin casing in which a molding die to which a film is applied is injection-molded, and then an excessive portion of the film is thermally cut by a big die.

JP 2008-149635 A

  According to the manufacturing method described in Patent Document 1, a big die for cutting an excess portion of the film must be prepared for each molding die of the casing. Moreover, after shaping | molding a housing | casing in the state in which the film was crimped | bonded, the surplus part of a film will be cut | disconnected as another process. In other words, since the work is performed in a dedicated process using a dedicated jig, it is expensive to carry out and the process becomes complicated. Therefore, it has the subject that the surface coating by film crimping is difficult to be adopted, and it is difficult to provide the coating according to the consumer's preference.

  Accordingly, an object of the present invention is to provide a method for pressure bonding a film to a housing having a three-dimensional structure that does not require processing of the housing end surface after pressure bonding.

  In the film pressure-bonding method to the housing of the present invention, the housing is placed on a crimping jig having a shape that matches the shape of the housing and having a heatable protrusion in the vicinity of the periphery of the housing. The film is cut by press-bonding to a casing placed on a crimping jig and heating the protrusion.

  The crimping jig for mounting the casing to which the film of the present invention is crimped has a shape that matches the shape of the casing, and has a heatable protrusion near the periphery of the casing.

  The case to which the film of the present invention is crimped is placed on a crimping jig, and after the film is crimped, the film is cut by heating the protrusions formed around the crimping jig. Features.

  ADVANTAGE OF THE INVENTION According to this invention, the crimping | compression-bonding method of the film with respect to the housing | casing which has a three-dimensional structure which does not require the process of the housing | casing end surface after crimping can be provided.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings. The present embodiment is a film pressure bonding method in which a film pressure bonded to a housing is cut by heating an end portion of a jig on which the housing is placed during pressure bonding.

  FIG. 1 is a diagram illustrating a state in which a film is cut by a jig used in the film crimping method of the present embodiment. FIG. 1 shows a stage corresponding to FIG. 2 (e) in the prior art film pressing method shown in FIG. Referring to FIG. 1, the casing 1 is pressure-bonded to the film 2 while being placed on a pressure-bonding jig 11 disposed on a table 12. The crimping jig 11 has a protrusion 11 a in the vicinity of the periphery of the housing 1 so as to form a space between the periphery of the housing 1. The protrusion 11a is configured to be heated up to the melting temperature of the film 2, for example, by incorporating a heater (not shown) in the vicinity thereof.

  Then, the film crimping method of this embodiment is demonstrated. The steps until the film 2 is pressure-bonded to the housing 1 are the same as in the prior art, for example as shown in FIG. After the film 2 is pressure bonded to the housing 1, the protruding portion 11 a of the pressure bonding jig 11 is heated. Thereby, the film 2 reaches the melting temperature, and the film 2 is cut.

  Thereafter, the housing 1 is taken out from the film crimping apparatus. In this state, since the film is cut in accordance with the shape of the housing 1 by the protruding portion 11a of the crimping jig 11, it is not necessary to cut by the robot arm. Moreover, since it cut | disconnects by the protrusion part 11a provided in the crimping | compression-bonding jig | tool 11, it can cut | disconnect following the film crimping | compression-bonding process, and the jig | tool and process only for cutting are not required.

It is a figure which shows the state by which a film is cut | disconnected by the jig | tool used with the film crimping method of this embodiment. It is a figure which shows the film crimping | compression-bonding method to the housing | casing of a prior art. It is a figure which shows the cutting | disconnection of the film holding part by the robot arm of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Film 11 Crimping jig 11a Protrusion part 40 Robot arm

Claims (4)

The case has a shape that matches the shape of the case, and is placed on a crimping jig having a heatable protrusion near the periphery of the case,
Crimp the film to the housing placed on the crimping jig,
A method for press-bonding a film to a housing, wherein the film is cut by heating the protrusion. A crimping jig for mounting a casing to which a film is crimped,
It has a shape that matches the shape of the housing,
A crimping jig having a heatable protrusion in the vicinity of the periphery of the casing.   The crimping jig according to claim 2, wherein a space is formed between a peripheral edge of the casing and the protrusion when the casing is placed.   A housing in which a film is pressure-bonded, which is placed on a pressure-bonding jig and is cut by heating a protrusion formed around the pressure-bonding jig after the film is pressure-bonded. body.

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