Device for guiding sheets in a sheet processing apparatus
AssigneeHeidelberger Druckmaschinen AG
InventorsEckart Frankenberger, Michael Gieser, Christian Görbing, Peter Hachmann, Karl-Heinz Helmstädter, Christian Hieb, Ruben Schmitt, Günter Stephan
Life of this patent
Estimating the term…
Abstract
In a device for guiding sheets in a sheet-fed apparatus, preferably, a rotary printing press, sheet guide elements that are charged with blasted air are disposed at the sheet guide cylinder, and the air blast nozzles include a combination of conventional free jet nozzles and throttled nozzles, which are independently charged with different pressure levels.
Claims14
A device for guiding sheets in a sheet-fed apparatus having a form cylinder, a rubber blanket cylinder, and a sheet guiding cylinder, the device comprising:
- at least one sheet guide disposed in a region of a printing nip formed between a sheet guiding cylinder and one of a form cylinder and a rubber blanket cylinder, the nip disposed parallel to the sheet guiding cylinder, and the sheet guiding cylinder having a shell surface;
- said at least one sheet guide having blast openings for guiding a sheet on the shell surface;
- and
- said blast openings including a combination of:
- free jet nozzles;
- and
- throttled air blast nozzles;
- said throttled air blast nozzles being disposed closer to the sheet guide cylinder than said free jet nozzles.
A sheet-fed rotary press for processing printing material sheets, comprising:
- a form cylinder;
- a rubber blanket cylinder;
- a sheet guiding cylinder having a shell surface, said sheet guiding cylinder and one of said form cylinder and said rubber blanket cylinder forming a printing nip parallel to said sheet guiding cylinder;
- at least one sheet guide disposed in a region of said printing nip;
- said at least one sheet guide having blast openings for guiding a sheet on the shell surface;
- and
- said blast openings including a combination of:
- free jet nozzles;
- and
- throttled air blast nozzles;
- said throttled air blast nozzles being disposed closer to the sheet guide cylinder than said free jet nozzles.
A device for guiding sheets in a sheet-fed apparatus having a form cylinder, a rubber blanket cylinder, and a sheet guiding cylinder, the device comprising:
- at least one sheet guide disposed in a region of a printing nip formed between a sheet guiding cylinder and one of a form cylinder and a rubber blanket cylinder, the nip disposed parallel to the sheet guiding cylinder, and the sheet guiding cylinder having a shell surface;
- said at least one sheet guide having blast openings for guiding a sheet on the shell surface;
- said blast openings including a combination of:
- free jet nozzles;
- and
- throttled air blast nozzles;
- said throttled air blast nozzles being charged with a blasted air pressure at a given pressure level;
- and
- said free jet nozzles being separately charged with a blasted air pressure at a pressure level different from said given pressure level.
A sheet-fed rotary press for processing printing material sheets, comprising:
- a form cylinder;
- a rubber blanket cylinder;
- a sheet guiding cylinder having a shell surface, said sheet guiding cylinder and one of said form cylinder and said rubber blanket cylinder forming a printing nip parallel to said sheet guiding cylinder;
- at least one sheet guide disposed in a region of said printing nip;
- said at least one sheet guide having blast openings for guiding a sheet on the shell surface;
- said blast openings including a combination of:
- free jet nozzles;
- and
- throttled air blast nozzles;
- said throttled air blast nozzles being charged with a blasted air pressure at a given pressure level;
- and
- said free jet nozzles being separately charged with a blasted air pressure at a pressure level different from said given pressure level.
Dependencies are inferred from the claim text.