JP2000071334A - Method and apparatus for welding resin member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the processing accuracy of the surface of the welded part of two or more resin members. SOLUTION: A resin part welding apparatus 200 is constituted of a terminal 206 irradiating the welded part 210 of a first resin member 201 and a second resin member 202 with energy 208 to perform welding, the jigs 204, 205 holding both resin members so as to be capable of welding them by the terminal 206 and the plate 203 closely bonded to the surface 211 of the welded part 211 in a detachable manner and transmitting light energy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for welding two or more resin members, and more particularly to a method for improving the processing accuracy of the surface of a welded portion of a resin member.

[0002]

2. Description of the Related Art Conventionally, welding methods for integrating two or more resin members of this type include bonding with an adhesive, heat welding with a hot plate or the like, and vibration welding with ultrasonic waves.

[0003] As shown in FIG. 1 (a), an adhesive is applied by applying an adhesive to at least one of bonding surfaces 103 and 104 provided so as to face resin members 101 and 102, respectively. When the adhesive is dried by combining the resin members, the process is completed.

[0004] As shown in FIG.
In the heat welding by, for example, after the resin members 101 and 102 are combined, a hot plate 110 is attached to the surface of the joint portion and heat is applied from the outside, so that the hot plate 110
1 and 102 to complete.

[0005]

However, in the above-mentioned welding method, in the case of bonding with an adhesive, the adhesive 105 overflows from between the combined resin members 101 and 102, and a gap 106 is formed between the resin members. As a result, foreign matter may enter, or water or the like may enter from a portion to which the adhesive is not applied, thereby causing a problem in function and design.

In the case of heat welding using the hot plate 110 or the like, the hot plate 110 is attached to the joining surface of the combined resin members 101 and 102, so that there is a limitation in design or a problem in design.

Therefore, an object of the present invention is to provide a welding method and apparatus for improving the processing accuracy of the surface of a welded portion between two or more resin members, and a technical object thereof.

[0008]

According to a first aspect of the present invention, there is provided a method for welding resin members by irradiating two or more resin members with light energy. A plate that transmits light energy is adhered to the surface, and light energy is applied to the weld through the plate, so that the light energy melts the welded surfaces of two or more resin members, and the molten resin adheres. The shape is regulated until solidified by the plate, so that a welded surface of two or more resin members having a smooth surface can be obtained.

According to a second aspect of the present invention, in a resin member welding apparatus for irradiating two or more resin members by irradiating them with light energy, light energy is applied to weld portions of the two or more resin members. And a terminal for welding the resin member, a jig for holding the resin member so that it can be welded to the terminal, and a plate for transmitting light energy that is detachably adhered to the surface of the welded portion. Due to the light energy emitted from the terminal, the surface of the welded portion of the two or more resin members is melted, and the melted resin is prevented from flowing out in a regulated shape until solidified by the adhered plate,
Two or more resin members having a smooth welded surface can be obtained.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a sectional perspective view of the resin member welding apparatus according to the present invention. FIG. 3 is an enlarged view of a welded portion of the resin member welded by the resin member welding apparatus according to the present invention.

First, a configuration based on the embodiment will be described.

As shown in FIG. 1, a resin member welding apparatus 200 includes a first resin member 201 and a second resin member 202.
Jig 204 and plate 203 for holding the first and second resin members 201 and 202 which are combined and welded by irradiating light energy 208 through plate 203 to welding portion 210 of first and second resin members 201 and 202 206, and a moving device 209 that sequentially moves the terminals 206 through the rails 207 corresponding to the desired welds 210.

First resin member 201 and second resin member 202
Are combined by fitting the second resin member 202 into the groove 201a formed in the first resin member 201.
Note that the first resin member 201 and the second resin member 202
For example, molded with ABS resin, the thickness is 3m
m. Here, the first resin member 201 and the second resin member 202 are formed of the same material, but need not necessarily be formed of the same material. The combined first resin member 201 and second resin member 202 are held in close contact with the lower surface of the first resin member 201 and the lower surface of the second resin member 202 by the plate 203, and the first resin member 20.
The lower end surface and the side surface of the first jig 204 are held by a first jig 204. The plate 203 is firmly connected to the first jig 204 and the second jig 202.

Light energy 2 emitted from terminal 206
08 is generated from, for example, a YAG laser or EB.

The plate 203 is made of a material that transmits light, such as glass. Depending on the material and shape used, the plate thickness can be reduced by utilizing the lens effect or the like.

The moving device 209 controls the moving speed and the moving position of the terminal 206 by a control device (not shown). In the present embodiment, the moving device 209 is connected to the rail 207.
However, a plurality of terminals 206 may be continuously arranged and welded to a desired welded portion 210.

Next, the operation based on the embodiment will be described.

First resin member 201 and second resin member 202
Is installed so as to be held by the plate 203 and the first jig 204. First resin member 201 and second resin member 202
When the installation of the moving device 20 is confirmed,
The terminal 206 movable by 9 moves to a position to be welded by the control device, emits light energy 208, and welds the welding portion 210.

The depth of the welding portion 210 is determined from the welding surface 211 according to the type of the light energy 208 and the use of the resin member, and the light energy 208 can be emitted from the terminal 206 while being moved by the moving device 209. As a result, a continuous connection is obtained as shown in FIG. Thus, for example, in welding a plurality of resin members, a member having a function of preventing water from entering can be manufactured by the welding device 200. When the continuously connected welded portion 210 is not required, the terminal 206 is moved to a desired welding point and irradiated with light energy 208 to perform welding, and then the light energy 208 is stopped and moved to the next welding point. It is also possible.

The welded first resin member 201 and second resin member 202 are connected to each other by a plate 20 after the welded portion 210 is substantially solidified.
3 and the first jig 204.

[0021]

As described above, in the method and apparatus for welding resin members according to the present invention, the surfaces of the welded portions of two or more resin members are melted by light energy, and the melted resin is solidified by a plate in close contact. Since the shape is regulated up to this point, a welded surface of two or more resin members having a smooth surface can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a resin member welded by a conventional welding method.

FIG. 2 is a cross-sectional perspective view of a resin member welding apparatus according to the present invention.

FIG. 3 is an enlarged view of a welded portion of the resin member welded by the resin member welding apparatus according to the present invention.

[Explanation of symbols]

 200 Welding device 201 First resin member 202 Second resin member 203 Plate 204 First jig (jig) 205 Second jig (jig) 206 Terminal

Claims (2)

[Claims] 1. A method for welding a resin member by irradiating two or more resin members with light energy, wherein a plate that transmits light energy is brought into close contact with a surface of a welded portion of the resin member, and the light energy is passed through the plate. Is applied to the welding portion. 2. A resin member welding apparatus for irradiating two or more resin members by irradiating them with light energy, wherein said terminal irradiates light energy to a welded portion of two or more resin members to perform welding. An apparatus for welding a resin member, comprising: a jig for holding the resin member so as to be weldable by the terminal; and a plate which is detachably adhered to the surface of the welding portion and transmits light energy.