Sheet-fed printing machine for different printing methods

Patent metadata

Field	Value
Publication number	US-11207878-B2
Application number	US-201917049279-A
Country	US
Kind code	B2
Filing date	Aug 22, 2019
Priority date	Sep 11, 2018
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A sheet-fed printing machine comprises two sheet-fed printing units; of which a first is configured as a sheet-fed simultaneous printing unit and has two collector cylinders, which interact with one another and each have an axis of rotation. An axial plane contains the axes of rotation of the collector cylinders. A reference plane contains an axis of rotation of this type and has a horizontal surface normal. An intersection angle between the axial plane and the reference plane is, at a maximum, 45 degrees. A first one of the sheet-fed simultaneous printing units has exactly four plate cylinders, of which exactly two are arranged such that they directly interact with the first collector cylinder and has exactly two others which are arranged such that they directly interact with the second collector cylinder. A second sheet-fed printing unit has at least one impression cylinder and at least one plate cylinder, which is arranged such that it directly interacts with the impression cylinder and which is configured a screen printing plate cylinder, or as a flexo plate cylinder or as a numbering plate cylinder. The two collector cylinders of the first printing unit and the impression cylinder of the second printing unit have the same circumference.

First claim

The invention claimed is:

1. A sheet-fed printing machine comprising:
at least first, second and third sheet-fed printing units;
wherein the first sheet-fed printing unit is formed as a first simultaneous sheet printing unit and has a first cylinder of a first type formed as a first collecting cylinder and has a second cylinder of the first type formed as a second collecting cylinder, which first and second cylinders of the first type one of have direct contact with one another and are arranged to interact directly with one another and each of which first and second cylinders of the first type has an axis of rotation;
wherein a first axial plane contains both the axis of rotation of the first cylinder of the first type and the axis of rotation of the second cylinder of the first type;
wherein a first reference plane contains at least an axis of rotation of one of the first and second cylinders of the first type and has a horizontal surface normal;
wherein the first and second cylinders of the first type are arranged, at least during a processing operation, such that an intersection angle between the first axial plane and the first reference plane is no more than 45°;
wherein the second sheet-fed printing unit has at least a third cylinder of the first type formed as a first impression cylinder;
wherein the first and second collecting cylinders of the first sheet-fed printing unit and the at least one third cylinder of the first type formed as the first impression cylinder of the second sheet-fed printing unit have a same outer circumference;
wherein the first simultaneous sheet printing unit has precisely four first forme cylinders, of which precisely a first two cylinders of the precisely four forme cylinders one of have direct contact with, and are arranged to interact directly with the first collecting cylinder and of which a second two cylinders of the precisely four first forme cylinders one of have direct contact with, and are arranged to interact directly with the second collecting cylinder;
wherein the second sheet-fed printing unit has at least one second forme cylinder, which at least one second forme cylinder one of has direct contact with and is arranged to interact directly with the impression cylinder of the second sheet-fed printing unit and which at least one second forme cylinder is formed as a numbering forme cylinder;
wherein the third sheet-fed printing unit is formed as a second simultaneous sheet-fed printing unit and has at least a fourth cylinder of the first type and formed as a third collecting cylinder; and
wherein a unit length is assigned to the sheet-fed printing machine, and wherein the outer circumferences of the first, second, third and fourth cylinders of the first type of the at least first, second and third sheet-fed printing units correspond to double the unit length, and wherein respective outer circumferences of the precisely four forme cylinders of the first sheet-fed printing unit and the at least one second forme cylinder of the second sheet-fed printing unit are the same and each corresponds to the unit length.

2. The sheet-fed printing machine according to claim 1 , wherein the second sheet-fed printing unit has the third cylinder of the first type formed as the first impression cylinder and has a fifth cylinder of the first type formed as a second impression cylinder, which first and second impression cylinders one of have direct contact with one another and are arranged to interact directly with one another and each of which first and second impression cylinders each has an axis of rotation, and wherein a second axial plane contains both an axis of rotation of the third cylinder of the first type as well as an axis of rotation of the fifth cylinder of the first type, and wherein a second reference plane contains at least one axis of rotation of one of the third and fifth cylinders of the first type and has a horizontal surface normal, and wherein these third and fifth cylinders of the first type are arranged, at least during a processing operation, such that an intersection angle between the second axial plane and the second reference plane is no more than 45°.

3. The sheet-fed printing machine according to claim 1 , wherein, with respect to one of the first sheet-fed printing unit and with respect to the second sheet-fed printing unit, the respective first and second cylinders of the first type are arranged, at least during a processing operation, such that the intersection angle between the first axial plane and the first reference plane, amounts to no more than 30°.

4. The sheet-fed printing machine according to claim 1 , wherein the second sheet-fed printing unit has the third cylinder of the first type, formed as the first impression cylinder, and has a fifth cylinder of the first type formed as a second impression cylinder, and wherein the second sheet-fed printing unit has fifth and sixth cylinders of a second type and formed as first and second sheet transfer cylinders, each of which fifth and sixth cylinders has one of direct contact with and is arranged to interact directly with one of the third and fifth cylinders of the first type, and wherein the second sheet-fed printing unit has four cylinders of a third type formed as forme cylinders of which precisely two of the cylinders of the third type one of have direct contact with and are arranged to interact directly with the first impression cylinder and of which two other ones of the cylinders of the third type one of have direct contact with and are arranged to interact directly with the second impression cylinder.

5. The sheet-fed printing machine according to claim 1 , wherein the first sheet-fed printing unit, which is formed as the first simultaneous sheet printing unit, has at least one inking unit for each of the precisely four forme cylinders, each of which at least one inking unit for each of the precisely four forme cylinders has at least one ink reservoir, and wherein at least one reservoir sectional plane is established for each ink reservoir, the at least one reservoir sectional plane for each at least one ink reservoir intersecting both its at least one ink reservoir as well as containing an axis of rotation of the one of the precisely four forme cylinder one of which is arranged to interact with and is capable of interacting with the at least one inking unit which contains its at least one ink reservoir, and wherein an intersection angle between the first reference plane and the at least one reservoir sectional plane of the one of the at least one ink reservoir amounts to no more than 45°.

6. The sheet-fed printing machine according to claim 1 , wherein the sheet-fed printing machine has at least one transfer unit, which at least one transfer unit has at least one sheet transfer element, and wherein the at least one transfer unit one of has a sheet transfer unit frame and is supported by two functional units.

7. The sheet-fed printing machine according to claim 6 , wherein a first one of the two functional units is formed as one of a substrate supply system and as a sheet processing unit, and a second one of the two functional units is formed as one of a delivery device and as a sheet processing unit.

8. The sheet-fed printing machine according to claim 6 , one of wherein the at least one transfer unit is simultaneously formed as an inspection unit, and wherein one of the at least one sheet transfer element of the at least one of the transfer unit and of the inspection unit of the at least one transfer unit has at least one gripper system, and wherein the inspection unit of the at least one transfer unit has one of at least one reflection inspection device and at least one transmission inspection device.

9. The sheet-fed printin

Assignees

• Koenig & Bauer Ag

Inventors

• Bauer Stefan
• Palme Martin
• Schaede Johannes

Classifications

• B41F23/0456

  by infrared dryers · CPC title

• B41F11/02 Primary

  for securities (security printing B41M3/14) · CPC title

• B41P2217/11

  Machines with modular units, i.e. with units exchangeable as a whole · CPC title

• B41F23/0443

  after printing · CPC title

• B41F23/0466

  by using heated air · CPC title