Process and machine for the welding together of plastic parts pr

Details Process and machine for the welding together of plastic parts pr Process and machine for the welding together of plastic parts pr

1989-07-28

1990-04-17

Paschall, M. H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219497, 219535, 219544, 285286, B29C 6534, B29L 3124, F16L 4700

Patent

active

049182927

ABSTRACT:
The invention relates to the automatic welding of plastic parts possessing a built-in winding. In order to carry out an automatic welding operation without risking damaging the parts by subjecting them to an excessive welding temperature, there are regulating means for varying the electrical energy supplied to the winding, in order, during the welding phase, to maintain the temperature of the winding between a minimum temperature, below which welding cannot be carried out, and a maximum temperature, beyond which the parts will be damaged. The invention is used particularly for the production of systems for the distribution of gas under pressure by means of plastic pipelines.

REFERENCES:
patent: 3005080 (1961-10-01), Bletz
patent: 4323526 (1982-04-01), Hilbush III
patent: 4401884 (1983-08-01), Kusonoki et al.
patent: 4602148 (1986-07-01), Ramsey
patent: 4684789 (1987-08-01), Eggleston

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