US 12,528,664 B2Granted

Device and method for folding sheets

AssigneeHeidelberger Druckmaschinen AG

InventorsHerbert Ackermann, Martin Haupt-Terlau, Gerhard Lubberger, Stefan Waldreiter

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Abstract

A folding unit has two folding rollers with a common folding nip. A first insertion slot has a first insertion plane for a selectively insertable buckle plate and is configured so that a buckle plate mouth of the buckle plate is at an inlet side of the folding nip. A second insertion slot has a second insertion plane for a buckle plate. The second insertion plane is inclined with respect to the first insertion plane and the second insertion slot is designed for the buckle plate mouth of the selectively inserted buckle plate to be arranged on the inlet side of the folding nip. Printing substrates with different properties are processed in a high-quality and highly productive manner in a pocket folding process, especially in buckle folding units of industrial folding machines.

Claims18

Dependent claims

A device for folding sheets, the device comprising:

two folding rollers forming a common folding nip having an inlet side and an outlet side;
a first insertion slot defining a first insertion plane for a selectively insertable buckle plate with a buckle plate mouth, said first insertion slot being configured to arrange said buckle plate mouth of a selectively inserted said buckle plate on the inlet side of said folding nip;
a second insertion slot defining a second insertion plane for a selectively insertable buckle plate with a buckle plate mouth, said second insertion plane formed by said second insertion slot being disposed with an inclination relative to said first insertion plane formed by said first insertion slot;
and
said second insertion slot being configured to arrange said buckle plate mouth of a selectively inserted said buckle plate on the inlet side of said folding nip.

2 more elements

Dependencies are inferred from the claim text.