Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control
Patent
1991-05-14
1993-07-06
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Automatic and/or material-triggered control
156359, 156378, 156379, 1563796, 1563797, 156498, 156499, 156502, 156556, 156581, 1565831, B32B 3100, B32B 3124
Patent
active
052250253
ABSTRACT:
A method and apparatus for automated resistance welding of materials is provided. The material may be thermoplastic material. The material has a layer of a second material adjacent thereto. The second material is a dissimilar material which may be applied as a film or a coating on the first material, or the second material may be a separate layer placed adjacent the first material. A heating element is placed in the interface between overlapping portions of the two pieces of material to be welded together. The layers are directly adjacent to the heating element. The layers can be consolidated onto the heating element if desired. The heating element can be composed of carbon fibers in a polymer matrix. The heating element is supplied with current to generate resistive heating. The heating causes melting of the layers adjacent to and contacting the material. Pressure is applied to the area being welded to fuse the materials together. A lower pressure may be applied as a clamping force to areas adjacent to the welded area. The welding may be performed in a step wise fashion to separate weld segments or substantially completely to the entire weld joint. A cooling mechanism is also provided. The weld is simultaneously inspected for the occurrence of melting and for bond quality. A control system is provided for full automation of the system.
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H465 (May 13, 1988) U.S. Statutory Invention Registration (Brown).
Andersen Stephen M.
Don Roderic
Gillespie John
Holmes Scott
Lambing Cynthia L. T.
Aluminum Company of America
Sells J.
Silverman Arnold B.
Simmons David A.
Topolosky Gary P.
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