Friction welding machine and method for assembling polystyrene s

Details Friction welding machine and method for assembling polystyrene s Friction welding machine and method for assembling polystyrene s

1979-05-29

1981-02-24

Witshyn, Michael G.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156358, 156556, 156580, 228 2, 228112, 2421187, 264 68, 264248, B29C 2708

Patent

active

042525870

ABSTRACT:
A machine for assembling a polystyrene spool by friction welding polystyrene end flanges (in the form of discs) to the polystyrene cylindrical sleeve or barrel of a spool, used for holding wire or cable wound thereon. The machine comprises a pair of coaxially spaced rotary mandrels, driven by respective motors, on which the end flange discs are first manually mounted, and a pair of cradle members for supporting a cylindrical sleeve in coaxial relation between the two mandrels. A control system is provided for initiating rotation of the mandrels with the end flanges, then causing inward movement of the mandrels toward the opposite ends of the sleeve with a predetermined air pressure to cause softening of a stepped shoulder on the end of the central polystyrene hub of the end flanges. Rotation of the end flanges is immediately stopped upon a predetermined inward movement of the mandrels toward each other to cause the end flanges to become attached to the sleeve on cooling, by the solidification of the polystyrene of the end flanges and sleeve.

REFERENCES:
patent: 3595462 (1971-07-01), Hirayama
patent: 3743162 (1973-07-01), Gage
patent: 3800995 (1974-04-01), Franks et al.
patent: 3954215 (1976-05-01), Takagi et al.
patent: 3980248 (1976-09-01), Minoshima
patent: 4090898 (1978-05-01), Tuskos

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