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US 9,517,616 B2Granted
Lifting sucker with pneumatically controllable suction cup and punch and sheet-fed rotary printing press having the lifting sucker
AssigneeHeidelberger Druckmaschinen AG
InventorsAndreas Mueller, Jochen Renner
Life of this patent
Estimating the term…
Abstract
A lifting sucker for separating sheets from a sheet stack includes a suction cup formed as a double-walled bellows sucker having at least one suction chamber that can be acted on pneumatically to contract the bellows sucker. A punch and a sheet-fed rotary printing press having the lifting sucker are also provided.
Claims18
A lifting sucker for separating a sheet from a sheet stack, the lifting sucker comprising:
- a suction cup formed of flexible material and having a suction opening formed therein;
- and
- a double-walled bellows defining said suction cup and enclosing said suction opening, said bellows having a mounting end, said bellows having an inner wall with an inner wall distal end opposite said mounting end and an outer wall with an outer wall distal end opposite said mounting end, said bellows having a ring-shaped end wall connected between said inner wall distal end and said outer wall distal end for defining at least one suction chamber.
A lifting sucker for separating a sheet from a sheet stack, the lifting sucker comprising:
- a suction cup formed of flexible material and having a suction opening formed therein;
- and
- a double-walled bellows defining said suction cup and enclosing said suction opening, said bellows having a mounting end and a distal end for engaging the sheet, said bellows having an inner wall and an outer wall, said bellows having a ring-shaped end wall at said distal end, said ring-shaped end wall connecting said inner wall with said outer for defining at least one suction chamber, said ring-shaped end wall having at least one additional suction opening formed therein.
A lifting sucker for separating a sheet from a sheet stack, the lifting sucker comprising:
- a suction cup formed of flexible material and having a suction opening formed therein;
- and
- a double-walled bellows defining said suction cup and coaxially enclosing said suction opening, said bellows being divided into at least one closed suction chamber and into a plurality of suction chambers with additional suction openings formed therein.
Dependencies are inferred from the claim text.