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Pressing device

A pressure and pressure shoe technology, applied in the press section, textiles and papermaking, papermaking and other directions, can solve problems such as lateral pressure distribution deviation, and achieve the effect of reducing manufacturing costs and simplifying assembly

Inactive Publication Date: 2006-11-29
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydraulic bed has problems with sealing
The disadvantage of using separate pressure pistons is the deviation of the lateral pressure distribution caused by the individual pistons

Method used

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Examples

Experimental program
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Embodiment Construction

[0045] In a schematic cross-sectional view, figure 1 A pressure shoe with a corresponding pressing device 12 is shown.

[0046]The pressing device 12 comprises at least one pressure element 16 , which is supported on a carrier 14 and is flexible at least in regions. In order to generate a predetermined pressing force via a corresponding pressure element volume, the pressure element 16 has at least one cavity 18 in which a pressure fluid acts.

[0047] In this example, the pressure element 16 has only a single continuous cavity 18 .

[0048] A flexible belt can be guided over the pressure shoe 10 , for example a flexible cover of a shoe roller. By means of pressing units acting on the lower part 20 of the pressure shoe 10, the pressure shoe and the associated flexible belt can be pressed against opposing surfaces formed, for example, by backing rollers, so as to form an extended pressing nip.

[0049] The pressure element 16 , which is configured as a lifting pad or a pressu...

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PUM

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Abstract

The invention relates to a device (12) which is used to press a pressure shoe (10) against a counter surface, comprising at least one at least partially flexible pressure body (16) which is supported on the bearing body (14), said pressure body comprising at least one cavity (18) which can be impinged upon by pressure fluid in order to produce a predetermined pressing force over a corresponding pressure body volume.

Description

technical field [0001] The invention relates to means for pressing a pressure shoe against an opposing surface. Background technique [0002] A pressure shoe of this type may in particular be part of a shoe-shaped pressing unit, in particular a shoe roll. It is used to press a flexible belt or a flexible press cover to form a press clip extending in the direction of web extension on a backing face formed, for example, by a backing roll Squeeze area (press nip). Corresponding shoe-shaped pressing members can be used for producing and / or processing fibreboard sheets, in particular paper or cardboard webs. Here, the fibreboard sheet can be guided through the associated press nip together with at least one felt or fabric. [0003] Heretofore, the pressure shoe was pressed using an oil press or a separate pressure piston. However, oil pressure beds have problems with sealing. The disadvantage of using separate pressure pistons is the deviation of the lateral pressure distrib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F3/02
CPCD21F3/0218
Inventor 詹斯·米勒埃瓦尔德·G·韦尔普安德烈亚斯·许特迪米特里奥斯·詹诺利斯拉尔夫·菲弗林沃尔夫冈·迈耶-格雷文迪克
Owner VOITH PATENT GMBH
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