All hydraulic subarea controllable middle-high super plating press

Abstract

The hydraulic sectional controllable super calender for paper making includes frame, planishing roller connected to the frame, top roller and bottom roller, hydraulic controller connected to frame. It features the controllable top roller and bottom roller with planishing roller weight compensating units set between the roller end and the frame, and the fast hydraulic separator set below the bottom roller. The calender can raise greatly the transverse smoothness of paper, planish great-width paper, make the top and bottom roller separate timely to avoid dry friction and damage when the paper breaks.

Description

technical field [0001] The invention belongs to a calender for a paper machine, in particular to a full-hydraulic partition controllable medium-high super calender. Background technique [0002] The calender of papermaking machinery is a special mechanical equipment for post-finishing paper. Most of the calenders in the prior art stay at the level of the 1960s and 1970s, and their performance is backward. Most of the common calenders now use fixed middle and high rollers. In practical application of this kind of calender with fixed middle and high rollers, it is necessary to replace the fixed middle and high rollers of different specifications according to the different types of paper to be pressed. The quality of the light is not only easily affected by human factors, but also affected by the processing precision of the middle and high rollers, resulting in unstable product quality. After the paper is calendered, there is a large difference in the weight and gloss per unit...

AI Technical Summary

Problems solved by technology

Most of the existing calenders stay at the level of the 1960s and 1970s, and their performance is backward

Most of the common calenders now use fixed middle and high rollers. In practical application of this kind of calender with fixed middle and high rollers, it is necessary to replace the fixed middle and high rollers of different specifications according to the different types of paper to be pressed. The quality of the light is not only easily affected by human factors, but also affected by the processing precision of the middle and high rollers, resulting in unstable product quality. After the paper is calendered, there is a large difference in the weight and gloss per unit area between the middle and both ends. There are quality problems after calendering of paper, and the width of the pressed paper is greatly limited, so it is difficult to calender the wide-width paper

In addition, because the fixed middle and high roller calender does not have a calender roller weight compensation device, it is also easy for the calender rollers to squeeze together due to their own weight, so that the pressure between the rollers is light and heavy, which also causes poor calendering quality of the paper. Stablize

The lack of a quick release device prevents the paper from being stopped in time when the paper is disconnected during the calendering process, resulting in severe dry grinding of the calender rollers and damage to the calender rollers, thereby affecting the normal operation of the equipment and reducing production efficiency

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