Method for cleaning a color system of a rotary printing press as well as color system

Patent metadata

Field	Value
Publication number	US-9409386-B2
Application number	US-201314398218-A
Country	US
Kind code	B2
Filing date	Mar 21, 2013
Priority date	May 2, 2012
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A color system of a rotary printing press includes a doctor blade device with a doctor blade chamber containing ink for a printing process, an ink reservoir from which ink is supplied to the doctor blade chamber, and a supply system which allows ink to be supplied inside the color system. The color system is connected to a storage reservoir into which ink from the color system is introduced, to a solvent reservoir containing solvent for cleaning the color system, and to a refuse container into which ink soiled by the solvent is introduced. The supply system cleans the color system by automatically pumping off ink to the storage reservoir, and automatically cleaning with the solvent, by collecting the ink in the ink reservoir and supplying the solvent to the refuse container.

First claim

What is claimed is:

1. A method of cleaning a color system of a rotary printing press,
with the color system
including a doctor device with a doctor chamber, in which an ink for a printing process of the rotary printing press is contained, an ink reservoir from which the ink is conveyed into the doctor chamber, and a conveyance system for conveying the ink within the color system, and
the color system being connected to a storage container, into which the ink from the color system is introduced, a solvent container, in which a solvent is provided for cleaning the color system, and a refuse container, into which the solvent soiled with the ink is introduced,
said method comprising the following processing steps:
(A) automatically pumping the ink off the color system via the conveyance system into the storage container, while simultaneously conveying the ink out of the ink reservoir via the conveyance system into the storage container, and
(B) automatically cleaning the color system via the solvent, with, in a first cleaning step, the solvent being collected in the ink container, and
in a second cleaning step, the solvent being conveyed into the refuse container.

2. The method according to claim 1 ,
wherein in the first cleaning step, the doctor chamber, the ink reservoir, and at least partially the conveyance system are cleaned.

3. The method according to claim 1 ,
wherein the conveyance system for the doctor chamber includes a primary supply line and a primary drainage line, with the primary supply line including a flow pump, and the primary drainage line including a return flow pump, with a bypass line being arranged between the doctor chamber and the flow pump and the return flow pump.

4. The method according to claim 3 ,
wherein the conveyance system includes a compressed air system, which is activatable after the second cleaning step such that the compressed air is conveyed through the flow pump and the return flow pump, resulting in residual ink contained in the flow pump and in the return flow pump being removed.

5. The method according to claim 3 ,
wherein the primary supply line and the primary drainage line include connection elements, allowing a connection to at least one of the ink reservoir and the storage container.

6. The method according to claim 5 ,
wherein the conveyance system includes a supplementary cleaning device, which is activatable after the second cleaning step to clean the connection elements.

7. The method according to claim 4 ,
wherein the compressed air system is at least one of manually activated and automatically started after the second cleaning step.

8. The method according to claim 6 ,
wherein the supplementary cleaning device supplies at least one of compressed air and a process solvent to the connection elements.

9. The method according to claim 3 ,
wherein the conveyance system includes a detector, which detects during the step (A) when the ink reservoir is at least one of empty and nearly empty.

10. The method according to claim 9 , wherein the detector is a sensor element that is at least one of arranged in the primary supply line and integrated in the flow pump.

11. The method according to claim 1 ,
wherein the conveyance system includes an ink tempering device arranged in the primary drainage line.

12. A conveyance system for a rotary printing press having a color system that includes a doctor device with a doctor chamber, in which ink is contained for a printing process of the rotary printing press, and an ink reservoir from which the ink is conveyed into the doctor chamber, and a conveyance system allowing to convey ink within the color system, said conveyance system comprising:
a storage container, into which the ink is introduced from the color system, a solvent container in which a solvent is provided for cleaning the color system, and a refuse container into which the solvent soiled with the ink is introduced,
with the conveyance system being configured to
perform an automatic process of pumping the ink via the conveyance system off the color system into the storage container while simultaneously conveying the ink out of the ink reservoir via the conveyance system into the storage container, and
perform an automatic cleaning of the color system via a solvent,
with, in a first cleaning step, the solvent being collected in the ink reservoir, and
in a second cleaning step, the solvent being conveyed into the refuse container.

13. The conveyance system according to claim 12 ,
wherein the conveyance system is configured modularly, forming a structural unit, which is connectable subsequently with the color system or removable from the color system.

14. A cleanable color system including a doctor device with a doctor chamber, in which ink is contained for a printing process of a rotary printing press, an ink reservoir from which the ink is conveyed into the doctor chamber, the cleanable color system being connected to a storage container, into which the ink is introduced from the color system, a solvent container in which a solvent is provided for cleaning the color system, and a refuse container into which the solvent soiled with the ink is introduced,
wherein the cleaning of the cleanable color system is performed by a method according to claim 1 .

15. The method according to claim 10 ,
wherein the sensor element is a frequency sensor that determines a flow rate of the flow pump.

16. The method according to claim 6 , wherein the supplementary cleaning device is at least one of manually activated and automatically started after the second cleaning step.

Assignees

• Windmoeller & Hoelscher

Inventors

• Telljohann Lutz

Classifications

• B41F35/00 Primary

  Cleaning arrangements or devices {(in manifolding apparatus or the like B41L41/00)} · CPC title

• B41F31/027

  Ink rail devices for inking ink rollers · CPC title

• B41F35/04

  for inking rollers · CPC title

• B41F31/08

  with ink ejecting means, e.g. pumps, nozzles · CPC title

• B41F31/20

  Ink-removing or collecting devices · CPC title