Device and method for cutting off an end section of a can blank
AssigneeSchuler Pressen GmbH
InventorsKlaus Blei, Uwe Gunther
Life of this patent
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Abstract
The invention is to a device and method, for cutting a can blank in which case an end section of the can blank is severed. The can blank is moved by means of a conveyor arrangement at a constant speed about a first axis of rotation. Preferably, a laser beam is used as the cutting means. A deflecting arrangement deflects the laser beam to a focal point where the side surface of the can blank is located. Due the rotation of the can blank about its longitudinal axis, the axial end section of said can blank is severed. The focal point of the laser beam does not change relative to the longitudinal axis of the can blank during the laser cutting operation.
Claims17
Device (10) for cutting a can blank (11), comprising
- a conveyor arrangement (27) comprising several can receptacles (28) for accommodating respectively one can blank (11), said conveyor arrangement rotating about a first axis of rotation (D1),
- wherein each can receptacle (28) is allocated a holding arrangement (29) comprising a plate (30), said plate being rotatable about a second axis of rotation (D2), and
- a cutting means (69) that, adapted to the rotation of the conveyor arrangement (27) about a first axis of rotation (D1), also rotates about the first axis of rotation (D1).
Method for cutting a can blank (11), comprising the following steps:
- supplying several can blanks (11) to respectively one can receptacle (28) of a conveyor arrangement (27) rotating about a first axis of rotation (D1);
- activating a laser source (70) and deflecting the laser beam (71), adapted to the rotational movement (R) of the can blank (11) about the first axis of rotation (D1), by means of a deflecting arrangement (72);
- and
- rotating the can blank (11) about its longitudinal axis (D2) during the laser cutting operation.
Dependencies are inferred from the claim text.