Cutting-off machine
AssigneeFives Oto S.P.A.
InventorsLuciano Micali, Andrea Anesi, Aleardo Chezzi, Gianluca Vecchini
Life of this patent
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Abstract
A cutting-off machine, comprising a cutting unit (2) being enabled to receive a tube (100) and to cut the tube (100) according to a plane transversal to a longitudinal axis (X) of the tube (100), movement means (8) enabled to grip stably a length (S) of cut tube (100) and move said length (S) away from the cutting unit (2) along a direction of advance (A) of the tube (100), and a cutting-off device (5) interposed between said cutting unit (2) and said movement means (8) and configured to realise cutting off of an inner welding seam (200) floating inside said tube (100).
Claims10
A cutting-off machine, comprising:
- a cutting unit (2) being enabled to receive a tube (100) and to cut the tube (100) according to a plane transversal to a longitudinal axis (X) of the tube (100);
- the cutting unit having at least a cutter being rotationally drivable about the tube to separate a first tube section from a second tube section, but not cut through an inner weld seam;
- movement means (8) enabled to grip stably a length (S) of cut tube (100) and move said length (S) away from the cutting unit (2) along a direction of advance (A) of the tube (100);
- a cutting-off device (5) interposed between said cutting unit (2) and said movement means (8) and configured to cut off the inner welding seam (200) floating inside said tube (100);
- the cutting off device and the cutting unit each respectively fixedly mounted to a carriage that moves along the direction of the tube during cutting.
A method for cutting off a tube (100), comprising the following steps in the specific order indicated:
- prepare a tube (100) welded along the longitudinal welding line and presenting internally a welding seam (200) detached from said tube (100);
- separate a length (S) of tube from said tube (100) by means of cutting according to a transversal plane to the longitudinal axis (X) of the tube (100) using a cutting means including at least a cutter rotationally driven about the tube;
- advance said length (S) away from the remaining part of the tube (100) along a direction (A) parallel to the longitudinal axis (X) of the tube (100) so as to expose a section of said inner seam (200);
- cut off said inner seam (200) by means of a guillotine cutting-off device (5) mounted on the same carriage as the cutting means.
Dependencies are inferred from the claim text.