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Doctor blade system for a printing unit, intended for an intaglio printing machine

A printing unit and squeegee technology, applied in gravure rotary printing presses, printing presses, rotary printing presses, etc., can solve problems such as restricting the movement of the squeegee blade bracket

Active Publication Date: 2010-03-10
BOBST SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the aforementioned elongated holes limit the movement of the doctor blade holder

Method used

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  • Doctor blade system for a printing unit, intended for an intaglio printing machine
  • Doctor blade system for a printing unit, intended for an intaglio printing machine
  • Doctor blade system for a printing unit, intended for an intaglio printing machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0048] Such as figure 1 As shown, the gravure printing machine (1) consists of a plurality of printing units (2 and 3) mounted in succession one after the other (here only two units are drawn). Print media (4) from upstream ( figure 1 Arrow S in ) enters the first printing unit (2), will be printed with the first color, leaves this unit downstream (S), and then enters (S) the second printing unit (3) upstream, will be printed with The second color, and exits (S) the unit downstream. The print medium (4) can enter and exit as many printing units as required, producing different color prints.

[0049] Each printing unit (2 and 3) comprises a frame (6), a printing carriage (7) inserted in the center of said frame (6), a dryer (8), a pinch roller (9) and A pump (not shown) for feeding ink. Due to the mechanism for transporting the print medium (4), the first printing unit (2) produces a front side print and the second unit unit (3) produces a back side print on the same print ...

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PUM

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Abstract

A doctor blade system, intended for a printing unit (2, 3), comprising a doctor blade holder (18) provided with a blade (17), one edge (22) of the blade (17) being capable of coming into contact witha peripheral surface of an engraved cylinder (11), a carrier hub (19) on which the doctor blade holder (18) is mounted, a structure (21) for fastening the carrier hub (19) to a frame (6) of the printing unit (2, 3), means for providing the blade (17) with a to-and-fro movement (B) at the peripheral surface of the engraved cylinder (11), in a direction approximately parallel to the axis of revolution (0) of said engraved cylinder (11), and one or more thrusting elements, causing the blade (17) to move in the direction of said peripheral surface of said engraved cylinder (11). The means for providing the blade (17) with a to-and-fro movement (B) drives the doctor blade holder (18), provided with the blade (17), directly, and the thrusting element or elements bear on the structure (21) and move the carrier hub (19) and the doctor blade holder (18), provided with the blade (17), so as to maintain constant contact over the entire length of the edge (22) of the blade (17) with the peripheralsurface of the engraved cylinder (11).

Description

technical field [0001] The invention relates to a doctor blade system equipped with a doctor blade. The invention also relates to a printing unit equipped with a doctor blade system. The invention finally relates to a gravure printing machine equipped with at least one printing unit. Background technique [0002] Gravure is a rotary printing process that can be used on a variety of media including paper or cardboard, using an engraved cylinder. Photogravure printing is particularly suitable for high-quality publications in high-runs, where graphics play an important role in the promotion of products, such as packaging boxes in the form of cardboard boxes. This printing method can print more than 10 colors in a single run with solvent-based, water-soluble or other inks: printing matt, glossy or structured varnishes; printing front and / or back and embossing. [0003] Thus, in a gravure printing press, the print medium in the form of a continuous strip is conveyed through a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F9/10
CPCB41F9/1009
Inventor P·罗巴戴
Owner BOBST SA
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