Toolholder for coupling a tool to a handling device

Electric heating – Metal heating – By arc

Reexamination Certificate

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Details

C414S730000, C901S042000, C901S049000

Reexamination Certificate

active

07002102

ABSTRACT:
The invention relates to a toolholder (10) for coupling a welding torch to an industrial robot (14), comprising a first fixing device (16) for fixing the welding torch (12) to the toolholder (10) and comprising a second fixing device (18) for fixing the toolholder (10) to the industrial robot (14). The first and second fixing devices (16, 18) can be displaced or repositioned with regard to one another counter to the action of spring elements (22, 24). The toolholder also comprises a protective circuit (26) for deactivating the welding torch (12) when predetermined displacements or repositionings are exceeded. A component (28) connected to the first fixing device (16) can be repositioned in the Z-direction (30) (toolholder longitudinal axis) and can be displaced in the X-direction and/or Y-direction (32, 34) with regard to the second fixing device (18). When displacing in the X-direction and/or Y-direction (32, 34), at least one spring element (22) having a first spring hardness is loaded, and at least one second spring element (24) having a second, different spring hardness is loaded during a repositioning in the Z-direction (30). The invention provides that the first spring element(s) (22) and the at least one second spring element (24) are arranged in series or are arranged in succession in two stages.

REFERENCES:
patent: 4514616 (1985-04-01), Warner
patent: 4639184 (1987-01-01), Knasel et al.
patent: 4655674 (1987-04-01), Kohler et al.
patent: 4954005 (1990-09-01), Knasel et al.
patent: 5626216 (1997-05-01), Sperling et al.
patent: 6346751 (2002-02-01), Delfino et al.
patent: 3333979 (1985-04-01), None
patent: 3445849 (1986-09-01), None
patent: 249774 (1987-12-01), None
patent: WO 95/07802 (1995-03-01), None

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