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US 2001/0042425 A1Published application
Perforating apparatus with fine setting
AssigneeHeidelberger Druckmaschinen AG
InventorsMarkus Belmann, Hatto Hechler
Life of this patent
Estimating the term…
Abstract
In a perforating apparatus which has a holder to which a perforating blade can be fastened, the perforation is produced via the movement of a piston by the piston pressing against an air cushion, which in turn transmits this pressure to a perforating piston which presses the perforating blade downward. A positioning device which directly varies the position of the piston unit relative to the housing surface is provided for the zero setting of the piston.
Claims15
A perforating apparatus, comprising:
- a movable device configured to carry a holder for a perforating device;
- a piston unit for moving said movable device;
- and
- a positioning device for setting an initial position of said piston unit attached to and acting directly on said piston unit.
1 more element
A method of adjusting a perforating apparatus, which comprises:
- providing a perforating apparatus with a movable device configured to attach thereto a holder for a perforating device, and a piston unit which can be moved from an initial position into an end position;
- and
- adjusting the initial position of the piston unit with a positioning device and thereby directly acting with the positioning device on the position of the piston unit.
Dependencies are inferred from the claim text.