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Doctor blade holder

A scraper and insert technology, applied in the scraper holder field, can solve the problems of insufficient lubricating fibers, complicated extrusion force technology, increased wear, etc., and achieve the effects of uniform transition, low friction coefficient, and increased service life

Inactive Publication Date: 2007-06-06
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the proposed solution, regionally different wear phenomena occur over the entire length of the doctor device, or constitute a solution that, although controllable, is technically extremely complex with respect to the pressing force
[0006] Furthermore, in the case of uneven loading, local deformations (e.g. , in the edge area of ​​the paper web) caused by increased wear causing problems

Method used

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Embodiment Construction

[0035] FIG. 1 shows a view of a doctor device according to the invention with a doctor bed 1 and a metering rod 2 , with an insert 4 arranged in the edge region. The metering rod 2 is rotatably mounted in a groove 3 arranged axially in the doctor bed 1 . In order to support the metering rod 2 in the extrusion direction, relatively short inserts 4 are arranged in the form of strips with a profile, as viewed in the axial direction, so as to maintain the necessary inherent elasticity of the whole scraper arrangement. In this case, this part extends over the entire width of the doctor bed 1 .

[0036] FIG. 2 shows a doctor device of a doctor bed 1 with a centrally arranged insert 4 . Thus, one or more inserts 4 integrated axially in the doctor bed 1 can be arranged at points in conventional doctor beds where extremely high mechanical loads occur. Here too, the insert 4 extends over the entire width of the doctor bed 1 .

[0037] FIG. 3 shows a view of a doctor device according ...

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Abstract

The invention relates to a doctor blade holder (1) which is configured as a profile strip having a groove (3) extending in the axial direction and receiving the rotatable doctor bar (2). Said doctor bar is forced against a rotating surface and meters and / or levels out a liquid to pasty medium applied to the rotating surface. When the medium is directly applied, the rotating surface is a face of a paper, carton or other fibrous web, and when the medium is applied indirectly, the rotating surface is the surface of a transfer element which transfers the medium onto the fibrous web. According to the invention, the doctor blade holder, in some sections, is configured in the axial direction by at least one insert element (4) which is more resistant to wear and / or heat than the remaining material.

Description

technical field [0001] The invention relates to a doctor bed formed as a profiled strip in the axial direction with a continuous groove for holding a rotatable metering rod which can be pressed against a moving surface and Metering and / or leveling a liquid with a pasty medium applied to a moving surface, which in the case of direct application of the medium is the side of a paper, board or other fabric, or in the case of indirect application the medium is delivered to The surface of the conveying element of the fabric. Background technique [0002] A doctor bed is used to mount and support the cylindrical metering rod used to meter and / or level the liquid with the pasty medium applied to the moving substrate within known coaters. Metering rods are usually made of homogeneous material. In this case, extremely long and thin cylindrical metering rods must be held at low to high rotational speeds while they apply, wipe off or merely dispense coating material as evenly as possi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C11/02D21H25/12B05C11/04D21H25/10
CPCB05C11/025D21H25/10B05C11/044
Inventor 克里斯托弗·亨尼格马丁·肖布梅尔迈克尔·海津格鲁迪格·肯伯格霍斯特·凯普夫
Owner VOITH PATENT GMBH
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