Welding unit
First Claim
1. A multi-head, indexing weld unit comprising:
- a plate like base member;
first and second slider assemblies, mounted to said base member, in spaced parallel relationship for movement axially along parallel axes;
rack and pinion means, disposed between, and fixedly mounted to said first and second slider assemblies to transfer linear motion of said first slider assembly along its respective axis to opposite motion of said second slider assembly, relative to said first assembly, along its respective axis;
motor means, fixed relative to said base member, attached to said first slider assembly, to drive said first slider assembly along its respective axis;
first and second welding units, mounted on said first and second slider assemblies respectively, having first and second welding heads extending outwardly from said units to terminate at predetermined locations, said first welding unit advanced along said first slider axis and said second welding unit retracted along said second slider axis;
said motor means actuable to move said first welding unit along said first slider assembly to a retracted position relative to said first slider axis and to move said second welding unit along said second slider assembly to an advanced position relative to said second slider axis thereby indexing said outwardly extending weld heads relative to each other.
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Accused Products
Abstract
A welding unit of semi-automatic design for use in spot welding applications in which limited production volumes, low labor rates, and other cost-related factors negate the use of high production, fully automated units. The welding unit comprises two automatic feed GMA spot welding units disposed within a housing and parallel adjacent mountings which allow for fore-aft sliding movement relative to one another and having the weld heads projecting outwardly through the front face of the housing for contact with the work surface. Gear racks mounted in parallel face-to-face configuration on each weld head mounting, and pinion gear disposed between and in contact with the gear racks of each weld head, cooperate to translate fore or aft motion of one weld mount into opposite movement for the other. The assembly allows formation of an axially placed series of adjacent spot welds to be placed on a workpiece utilizing one unit.
7 Citations
12 Claims
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1. A multi-head, indexing weld unit comprising:
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a plate like base member; first and second slider assemblies, mounted to said base member, in spaced parallel relationship for movement axially along parallel axes; rack and pinion means, disposed between, and fixedly mounted to said first and second slider assemblies to transfer linear motion of said first slider assembly along its respective axis to opposite motion of said second slider assembly, relative to said first assembly, along its respective axis; motor means, fixed relative to said base member, attached to said first slider assembly, to drive said first slider assembly along its respective axis; first and second welding units, mounted on said first and second slider assemblies respectively, having first and second welding heads extending outwardly from said units to terminate at predetermined locations, said first welding unit advanced along said first slider axis and said second welding unit retracted along said second slider axis; said motor means actuable to move said first welding unit along said first slider assembly to a retracted position relative to said first slider axis and to move said second welding unit along said second slider assembly to an advanced position relative to said second slider axis thereby indexing said outwardly extending weld heads relative to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification