Thermoplastic welding

Details Thermoplastic welding Thermoplastic welding

1980-06-18

1981-04-21

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Means joining flexible indefinite length or endless bodies...

156158, 1563042, 156499, 269 43, B29C 1900

Patent

active

042630843

ABSTRACT:
A machine for welding thermoplastic components which has a pair of clamps for holding two thermoplastic parts to be welded, one mounted on a slide, and action piston for moving the slidably mounted clamp towards the other clamp so as to press thermoplastic components held in the clamps against each other for welding, the action piston being located eccentrically of the clamps and a second, reaction piston located in dimension so as to provide a reaction force couple which nullifies the force couple arising from the eccentricity of the main action piston. This is the advantage that the force couple is not applied to the clamp which is slidably mounted and to components associated with the slide and provides assurance of an evenly distributed pressure between the two thermoplastic components to be welded therefore assuring better quality welds. The use of the two pistons moreover enables location of them only to one side of the clamps thereby leaving regions for good accessability to the clamps and to the thermoplastic components located in them.

REFERENCES:
patent: 3729360 (1973-04-01), McElroy
patent: 3789493 (1974-02-01), Drovince
patent: 4008118 (1977-02-01), Wesebaum et al.

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