Sheet-fed printing machine for different printing methods

Patent metadata

Field	Value
Publication number	US-11110697-B2
Application number	US-201917049269-A
Country	US
Kind code	B2
Filing date	Aug 22, 2019
Priority date	Sep 11, 2018
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A sheet-fed printing machine comprises at least two sheet-fed printing units. A first sheet-fed printing unit has a first impression cylinder and a second impression cylinder, which cylinders are arranged such that they directly interact with one another and each have an axis of rotation. An axial plane contains these two axes of rotation. A reference plane contains an axis of rotation of this type and has a horizontal surface normal. These two cylinders are arranged such that an intersection angle between the axial plane and the reference plane has a maximum angle of 30°. The first sheet-fed printing unit has at least one plate cylinder, which is in direct contact with or which directly interacts with one of the impression cylinders and which is configured as a numbering plate cylinder or as a flexo cylinder or as a screen printing plate cylinder. A second sheet-fed printing unit has at least one cylinder which is configured as an impression cylinder. The impression cylinder of the first printing unit and the impression cylinder of the second printing unit each have the same circumference.

First claim

The invention claimed is:

1. A sheet-fed printing machine comprising:
at least first and second sheet-fed printing units;
wherein the first sheet-fed printing unit has a first cylinder of a first type formed as a first impression cylinder and has a second cylinder of the first type and formed as a second impression 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 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 30°;
wherein the second sheet-fed printing unit has at least a third cylinder of the first type formed as a third impression cylinder;
wherein the first and the second impression cylinders of the first sheet-fed printing unit and the at least third impression cylinder of the second sheet-fed printing unit have a same outer circumference;
wherein the first sheet-fed printing unit has at least one first forme cylinder, which at least one first forme cylinder one of which has direct contact with and is arranged to interact directly with one of the first impression cylinder and with the second impression cylinder and which at least one first forme cylinder is formed as a as a flexo forme cylinder; and
wherein the second sheet-fed printing unit has at least one second forme cylinder, which at least one second forme cylinder one has direct contact with and is arranged to interact directly with at least one of the at least first and second impression cylinder and which at least one second forme cylinder is formed as a numbering forme cylinder.

2. The sheet-fed printing machine according to claim 1 , wherein the sheet-fed printing machine has at least a third sheet-fed printing unit, which at least one third sheet-fed printing unit is one of formed as a simultaneous sheet printing unit and has at least a fourth cylinder of the first type and formed as one of a collecting cylinder and formed as a transfer cylinder.

3. The sheet-fed printing machine according to claim 1 , wherein the second sheet-fed printing unit has at least one second forme cylinder which at least one second forme cylinder one or has direct contact with, and is arranged to interact directly with the at least one of the first and second impression cylinders and which is formed as a flexo forme cylinder.

4. The sheet-fed printing machine according to claim 1 , wherein the second sheet-fed printing unit has at least one second forme cylinder one of which has direct contact with and is arranged to interact directly with one the at least first and second impression cylinders and which at least one second forme cylinder is formed as a screen printing forme cylinder.

5. The sheet-fed printing machine according to claim 1 , wherein the at least one second forme cylinder of the second sheet-fed printing unit has an at least one second forme cylinder outer circumference which is the same as an outer circumference of the at least one first forme cylinder of the first sheet-fed printing unit.

6. The sheet-fed printing machine according to claim 1 , wherein a unit length is assigned to the sheet-fed printing machine, and wherein outer circumferences of the first cylinders of the first type of the at least first and second sheet-fed printing units correspond to double the unit length, and wherein an outer circumferences of each of the at least one first forme cylinder of the first sheet-fed printing unit and the at least one first forme cylinder of the second sheet-fed printing unit correspond to the unit length.

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

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

9. The sheet-fed printing machine according to claim 7 , one of wherein the at least one sheet transfer unit is simultaneously formed as an inspection unit, wherein the at least first sheet transfer element of the sheet transfer unit and the inspection unit has at least one gripper system, and wherein the inspection unit one of has at least one reflection inspection device and has at least one transmission inspection device.

10. The sheet-fed printing machine according to claim 1 , wherein the second sheet-fed printing unit has a fourth cylinder of the first type and formed as a fourth impression cylinder and a fifth cylinder of the first type and formed as a fifth impression cylinder, which fourth and fifth 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 fourth and fifth cylinders of the first type each has an axis of rotation and wherein a second axial plane contains both the axis of rotation of the fourth cylinder of the first type as well as the 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 fourth and fifth cylinders of the first type and has a horizontal surface normal, and wherein these fourth 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 30°.

11. The sheet-fed printing machine according to claim 1 , one of with respect to the first sheet-fed printing unit and with respect to the second sheet-fed printing unit, the respective ones of the first and second cylinders of the first sheet-fed printing unit and the at least third cylinder of the second sheet-fed printing unit are arranged, at least during a processing operation, such that an intersection angle between the first axial plane and the first reference plane, amounts to no more than 15°.

12. The sheet-fed printing machine according to claim 1 , wherein the at least one first forme cylinder of the first sheet-fed printing unit is allocated to another printing process principle as an at least one forme cylinder of the second sheet-fed printing unit.

Assignees

• Koenig & Bauer Ag

Inventors

• Bauer Stefan
• Palme Martin
• Schaede Johannes

Classifications

• B41F13/0032

  Auxiliary numbering devices · CPC title

• B41F21/10

  Combinations of transfer drums and grippers · CPC title

• B41F15/0809

  with cylindrical or belt-like screens · CPC title

• B41F5/24 Primary

  for flexographic printing · CPC title

• B41F11/02 Primary

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