Mechanical adjustment of multi-section curved rollers

Abstract

The invention discloses a mechanically adjustable multi-section arc roller, comprising: a steel structure box girder connected with a paper machine, several adjustment devices installed on the steel structure box girder, and several short rollers, the short rollers of each section are The adjusting device is installed between the roller and the adjacent short roller, and the steel structure box girder has a middle opening structure for installing the adjusting device. Through the above method, the present invention can realize the arbitrary adjustment of the arc of the roller surface in different regions, improve the stiffness of the arc roller and the uniform distribution of the arc of the roller surface, realize the requirements of low inertia and high speed of the arc roller, and improve the quality of the paper product banner. At the same time, it can reduce labor intensity, improve production efficiency and save costs.

Description

technical field [0001] The invention relates to the technical field of papermaking machinery, in particular to a mechanically adjustable multi-section arc roller. Background technique [0002] During the paper production process, paper often wrinkles during operation due to shrinkage forces in the cross-section of the paper. As the market's requirements for paper quality continue to increase, so do the requirements for curved rollers used to spread and smooth sheets. [0003] The existing curved rollers are integral (such as figure 1 shown), consists of N sections of rotatable roll shells (1-1) and internal fixed roll cores (1-2), and N sections of rotatable roll shells (1-1) form an arc-shaped roll surface (1 -3), which is only applicable to papermaking machinery with a speed of less than 1500 m / min and a roller speed of 2000 rpm. As the speed of papermaking machinery is getting faster and faster, and the width of the door is getting wider and wider, the integral curved ...

AI Technical Summary

Problems solved by technology

[0004] In addition, the temperature of the bearings used in the traditional integral arc-shaped roll rises rapidly after the linear speed of the arc-shaped roll exceeds 3000 meters, and the bearing will burn out over time, resulting in the failure of the arc-shaped roll; The rigidity requirement of the door width (above 4.5 meters) will inevitably thicken the roller core, which is not conducive to the space requirements of the papermaking machinery and is uneconomical

Wide-width integral arc-shaped rollers have high requirements for uniform distribution of roller surface arcs and roller surface runout, which are difficult to achieve. Once the above disadvantages occur, it will inevitably affect the quality of paper products.

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