Device and method for heat and pressure forming stakes

Details Device and method for heat and pressure forming stakes Device and method for heat and pressure forming stakes

1990-08-13

1992-03-17

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

292435, B21D 3900, B23P 1100

Patent

active

050956060

ABSTRACT:
A heat staking tip designed to contain an electrically heated element and an outer sealing sheath for making uniform plastic weld caps out of thermal plastic studs. The tip design combines both heat and pressure in the weld cycle. The sealing sheath is able to move relative to the heating element by use of air pressure. This allows the sealing sheath to seal around the plastic studs with a uniform force while heated pressure pins within the tip assembly are forced by a press assembly against the studs. The pressure pins both melt and pack the plastic of the studs to form uniform weld caps.

REFERENCES:
patent: 3111867 (1963-11-01), Riggio
patent: 3484935 (1969-12-01), Burns
patent: 4312122 (1982-01-01), Gunter
patent: 4409720 (1983-10-01), Boudreau
patent: 4459092 (1984-07-01), Hatakeyama
patent: 4633559 (1987-01-01), Loren
patent: 4763397 (1988-08-01), Tsukayama et al.
patent: 4767298 (1988-08-01), Bocchicchio et al.
patent: 4776782 (1988-10-01), Murayama et al.
patent: 4859378 (1989-08-01), Wolcott

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