Seals for scraper units

A technology of scraper device and sealing device, applied in general parts of printing machinery, gravure rotary printing machine, printing and other directions, can solve the problems of shortening life, easy wear of wings, leakage, etc., and achieve the effect of reducing wear and preventing leakage

Active Publication Date: 2018-12-07
海德堡印刷机械知识产权股份两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the wings are subject to wear and through their wear the life is shortened and leaks again occur

Method used

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  • Seals for scraper units
  • Seals for scraper units
  • Seals for scraper units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 A printing press 1 for offset lithography or offset printing on sheets is shown in detail. An anilox inking unit with an anilox roller 2 and a doctor blade arrangement 3 is shown in this detail. The doctor device 3 has a concave bottom 4, a pivotable rear wall 5, two side walls 6 and a single doctor blade 7 which is fixedly clamped on the bottom 4 and acts as a working doctor during printing operation. Negatively pressed onto the anilox roll 2 . The scraper device 3 is not a cavity type scraper, but a scraper ink fountain different from the cavity type scraper. The scraper device 3 has a reserve chamber 8 (see figure 2 ), the reserve chamber is delimited by the bottom 4 , the rear wall 5 and on the lateral ends of the doctor device 3 by the side walls 6 . The storage chamber 8 is open to the surroundings via a refill opening on its upper side. The liquid (ink) supplied to the anilox roller 2 by means of the doctor blade device 3 is stored in the storage c...

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PUM

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Abstract

The invention relates to a sealing device (9) for a doctor device of a printing press, comprising a blade contact section (20) having a front side (17) which bears against a doctor blade of the doctor device and a rear side (18), said rear side being softer, springier or more flexible than said front side (17).

Description

technical field [0001] The invention relates to a sealing device for a doctor blade unit of a printing press. Background technique [0002] The printing press includes an anilox roller inking unit and a coating unit with anilox roller and a cooperating doctor blade arrangement, such as a chamber doctor with two doctors (working doctor, closed doctor) and a varnish with only one doctor blade (working doctor) Squeegee ink fountain. Such a doctor device has at its two ends a rubber-elastic seal in each case which bears against the anilox roll and the or each doctor blade. [0003] The contact area between the seal and the scraper is prone to leaks when the scraper is moved relative to the seal. Such a movement occurs, for example, when the doctor blade is pressed against the anilox roll and bent there. [0004] US20090193990A1 describes a sealing arrangement for a chamber doctor blade. The sealing device each has a knife contact section at its two ends. The sealing device ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F31/04
CPCB41F31/027B41F9/1063
Inventor S·布奇科J·席尔法特
Owner 海德堡印刷机械知识产权股份两合公司
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