Richard E Challenger

US Patent:

44581319, Jul 3, 1984

Filed:

Jun 21, 1982

Appl. No.:

6/390240

Inventors:

Richard Challenger - Cortland OH

Assignee:

The Taylor-Winfield Corporation - Warren OH

International Classification:

B23K 1130

US Classification:

219 89

Abstract:

A Robot type resistance welder of very large capacity that enables the electrodes of the welder to be readily adjustable in the welding and retracting strokes and automatically controlled so as to retract when encountering an obstacle - also whereby the degree of retraction of electrodes may be selectively controlled and whereby the vertical elevation of the work plane may be varied during welding in accordance with the contour of the work, such as a curved panel. The respective electrodes of the spot welders have supporting arms which are pivotally interconnected together with an operating air cylinder. An adjustable stop is provided in the air cylinder to adjust the extent of retraction. The entire assembly including the pivotal supporting arms and inter-connected cylinder are provided with an adjustable stop for limiting the pivotal movement of the assembly. Such pivotal movement is cushioned by springs.

US Patent:

45280576, Jul 9, 1985

Filed:

Sep 8, 1983

Appl. No.:

6/530393

Inventors:

Richard Challenger - Cortland OH
William E. Mullane - Warren OH

Assignee:

The Taylor-Winfield Corporation - Warren OH

International Classification:

B32B 3128

US Classification:

1562737

Abstract:

An adhesive bonding press having a "C" frame which mounts upper and lower platens, one of which supports an induction coil mounted in a non-metallic tube. Adhesive is applied to coat the top surface of a lower metallic plate supported on the lower platen, after which a second metallic plate is laid thereon. Thereafter, the plates are clamped together by an air cylinder through upper and lower platens and tooling holders of the press, one of which includes an induction coil. High frequency current is then applied to the induction coil which rapidly heats the adhesive for 2 to 3 seconds. An air blast is then induced in the upper and lower tooling to rapidly cool the parts to room temperature. Spot curing takes place in the area axially of the induction coil which very firmly bonds the two plates together so that further operations in a production or automation line will take place immediately. The spot curing may be done in a number of spots on larger pieces or, for small pieces, may cover the entire area of the adhesive when metallic pieces are to be adhered together.