发明授权
- 专利标题: Process and device for hot gas welding of plastic sheets with electrically heated tubular gas flow conduit
- 专利标题(中): 具有电加热管状气流导管的塑料片热气焊接工艺和装置
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申请号: US644162申请日: 1996-05-10
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公开(公告)号: US6134387A公开(公告)日: 2000-10-17
- 发明人: Ramon Toss
- 申请人: Ramon Toss
- 专利权人: Toss; Ramon
- 当前专利权人: Toss; Ramon
- 优先权: DEX19517752 19950515; DEX19542488 19951115
- 主分类号: B29C65/00
- IPC分类号: B29C65/00 ; B29C65/10 ; F24H1/10 ; F24H3/04
摘要:
A process and device are used to weld plastic sheets with hot gas. Conventionally for welding with hot gas, the gas was conveyed over an electrically heated body. However, temperature fluctuations occurred that were difficult to correct and the result was a relatively high power consumption. In order to make a precise temperature guidance with a favorable efficiency possible, the gas is blown through a tubular heat conductor (10) with outlet openings (16) in its circumference wall and against a plastic sheet, and the tube body (10) is heated by an electrical current that is controlled by at least one temperature sensor exposed to the temperature of the tube body and/or the hot gas. Preferably, the tube body (10) itself is used as a temperature sensor, while its resistance, which changes with the temperature, is used to control the current intensity.
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