WELDING DEVICE AND METHOD FOR WELDING THERMOPLASTIC RESIN ARTICLES, AND PRESSING UNIT FOR THE WELDING DEVICE

摘要

A welding device includes a compressor configured to compress a welding part and its adjoining surfaces of thermoplastic resin articles (2a, 2b) in directions perpendicular to the axis of a core (1), and a heater, and is configured such that: the surface of the welding part of the thermoplastic resin articles is compressed with a predetermined pressure by the compressor, the compression of the thermoplastic resin articles is then continued to extend a compressed region along the axis of the core without changing a relative position between the compressor in the compressed region and the surface of the welding part of the thermoplastic resin articles, the welding part of the thermoplastic resin articles is heated and welded by the heater, and after the welding, the pressure applied by the compressor is lowered to stop the compression of the thermoplastic resin articles such that the thermoplastic resin articles fitted on the core can be taken out of the welding device.

主权项

1. A welding device for welding thermoplastic resin articles disposed in close contact with a supporting member, comprising:
a compressor configured to compress a surface of a welding part of the thermoplastic resin articles to be welded, and surfaces of the thermoplastic resin articles adjoining the welding part; and a heater, wherein the welding device is configured such that: the surface of the welding part of the thermoplastic resin articles is compressed with a predetermined pressure by the compressor, compression of the thermoplastic resin articles is then continued to extend a compressed region without changing a relative position between the compressor in the compressed region and the surface of the welding part of the thermoplastic resin articles, the welding part of the thermoplastic resin articles is heated and welded by the heater, and after the welding, the pressure applied by the compressor is lowered to stop the compression of the thermoplastic resin articles such that the welded thermoplastic resin articles can be taken out of the welding device.