Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1977-03-02
1978-05-23
Whitby, Edward G.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156366, 156368, 156580, 228 2, 228112, 264 68, B32B 3120
Patent
active
040908984
ABSTRACT:
A pair of thermoplastic workpieces are spin welded by placing one element in a non-rotatable, reciprocable clamp. Another workpiece is press-fit onto the first workpiece and the clamp is shifted toward a continuously rotatable collet having radially inwardly closable jaws. A mandrel extends from the collet and projects beyond the jaws to guide the workpieces between the jaws. The mandrel is axially inwardly displaceable by the workpieces, with inward movement thereof being yieldably resisted by a spring to insure that radial shoulders on the workpieces are in abutment. When the other workpiece is positioned between the jaws, the jaws are closed radially into driving contact with such workpiece to substantially instantly rotate the latter at the speed of the collet relative to the one workpiece. Frictional heat thus generated melts the interface between the workpieces. When the other workpiece is released from the jaws, it adheres to the one workpiece.
REFERENCES:
patent: 3606968 (1971-09-01), Loyd
patent: 3613982 (1971-10-01), Hollenberg
patent: 3897896 (1975-08-01), Louw et al.
Celanese Corporation
Whitby Edward G.
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