Device for the weld joining of sheet metal strips
AssigneeSiemens Vai Metals Technologies GmbH
InventorsStéphane Barjon, Hervé Thomasson, Jean Perret
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Abstract
A device for the laser weld joining of sheet metal strips includes the following elements: a main frame, a laser welding unit including a laser beam generator for welding the sheet metal strips to be joined and a welding head, a clamping jaw unit supported by the frame and used to clamp the sheet metal strips, and a shearing unit for shearing the head and tails of the sheet metal strips to be joined. The shearing unit includes upper blades mounted to a blade holder and lower blades which can move in relation to the upper blades and which are designed to shear a strip, as well as a blade connecting structure fixed to the frame, the above-mentioned welding head being mobile between the blade holder and the lower blades.
Claims14
A device for laser weld joining of sheet metal strips running in a steelworks of continuous processing, comprising:
- a main frame;
- a clamping unit carried by said main frame for clamping sheet metal strips, said clamping unit including first and second clamps each configured to clamp a respective sheet metal strip;
- a shearing unit for shearing heads and tails of sheet metal strips to be joined, said shearing unit including:
- an upper blade holder, first and second upper blades fastened on said upper blade holder in spaced relation with one another;
- first and second lower blades moving relative to said upper blades and adapted to shear a sheet metal strip;
- at least one joint structure of said first blades, said joint structure being in fixed relation to said frame;
- a laser welding unit including a generator for a laser beam for welding the sheet metal strips to be joined and including a welding head slidably mounted for moving in a space located between said upper blade holder and said lower blades.
A method for laser weld joining of sheet metal strips running in a steelworks of continuous processing, which comprises:
- holding a tail of a sheet metal strip to be joined with a first clamp and holding a head of a sheet metal strip to be joined with a second clamp;
- shearing the head and the tail of the sheet metal strips in a shearing unit having an upper blade holder and first and second lower blades;
- subsequently moving the sheet metal strips so sheared closer together;
- and
- subsequently welding with a laser beam with a welding head moved into a space in the shearing unit between the upper blades holder and the lower blades;
- and
- thereby performing the shearing step, the moving step, and the welding step without releasing the clamps.
Dependencies are inferred from the claim text.