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US 5,079,401 AGranted
Apparatus for machining a hollow cylinder to produce a pattern drum
AssigneeSchablonentechnik Kufstein Gesellschaft M.B.H.
InventorErwin Suchan
Life of this patent
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Abstract
A hollow cylinder, generally a foil, for use in screen printing, is patterned by laser beam machining. The foil is held at its ends and rotated about its axis while a carriage is shiftable along a guide extending on the bed along the cylinder and carrying the laser optics for training a laser beam against the cylinder. Support rollers engage the wall of the hollow cylinder from the exterior on the carriage adjacent the laser impingement location.
Claims15
An apparatus for machining a hollow cylinder to produce a pattern drum, comprising:
- a support defining an axis for a hollow cylinder to be machined and receiving said hollow cylinder for rotating said hollow cylinder about said axis;
- a guide extending parallel to said axis;
- a carriage displaceable along said guide relative to said hollow cylinder;
- a drive operatively connected to said carriage for displacing same along said guide;
- a machining laser generating a beam adapted to remove material from said hollow cylinder;
- laser optics on said carriage training said beam against said hollow cylinder;
- and
- a plurality of roller elements bearing frictionally against an external surface of said hollow cylinder and rollingly engaging same in an axial and in a circumferential direction.
5 more elements
Dependencies are inferred from the claim text.