Method and device for separating wound tubes having welded parts
AssigneeWitzenmann GmbH
InventorsTorsten Kappenstein, Gerald Kolbe, Stefan Schnell
Life of this patent
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Abstract
A method and a device for separating a wound tube (1) which includes interlocking windings (11, 12, 13, 14) of a metal strip (2) are provided, the wound tube (1) is welded in a predetermined axial region (10) and is then severed within the region (10) in a radial plane (6). The method furthermore defines that the wound tube (1) is axially compressed in the predetermined region prior to welding, such that the windings (11, 12, 13, 14) bear against one another in the region (10), and the welding is carried out along a predetermined number of turns (11, 12) in the region (10).
Claims14
A method for severing a wound tube (1) comprising mutually engaging windings (11, 12, 13, 14) of a metal strip (2), axially compressing the wound tube (1) to be welded in a defined axial region (10) prior to welding, welding the wound tube in the defined axial region that is axially compressed, and then severing the wound tube within the defined axial region (10) in a radial plane (6), wherein the wound tube (1) is axially compressed in the defined axial region prior to welding so that in the defined axial region (10) a contacting of the windings (11, 12, 13, 14) with each other occurs, and the welding is performed along a defined number of the windings (11, 12) in the defined axial region (10).
A device for severing a wound tube (1), comprising mutually engaging windings (11, 12, 13, 14) of a metal strip (2), including:
- a laser welder configured to weld the wound tube (1) in a defined axial region (10) along a defined number of the windings (11, 12) and
- a laser or mechanical cutter that is adapted to sever the wound tube (1) within the defined axial region (10) in a radial plane (6),
- a clamp that is adapted to axially compress the wound tube (1) in the defined axial region (10) such that the windings (11, 12, 13, 14) come to contact each other in the region (10).
Dependencies are inferred from the claim text.