Combined roller of open mill or calender

Abstract

The invention belongs to the field of roller structures of open mills or calenders, and discloses a combined roller of an open mill or a calender. The roller comprises a mandrel and a sleeve coating the mandrel; the mandrel includes an inner cavity and two parallel spiral medium runners formed in the surface of the mandrel; and the inner cavity includes a mandrel through hole, an inner pipe arranged in the mandrel through hole and a shunt backflow device. A medium of the roller synchronously flows in from two ends, and flows in two directions, so that the heating and cooling uniformity of a cylinder working surface of the calender or the open mill is guaranteed, the problems of high roller temperature difference and nonuniform heating and cooling are solved, and the roller heating or cooling effect is improved; the number of the through hole of the roller is few; the structure is simple; enough mechanical strength and rigidity of the roller are guaranteed; and under the precondition of guaranteeing the mechanical strength, the roller can change the pipe diameter size of a liquid inlet pipe, the number and the size of the through hole and the size of a medium access port to control the flow of the heating or cooling medium so as to influence the temperature control effect.

Description

technical field [0001] The invention relates to a roller structure of a mill or a calender, in particular to a combined roller of a mill or a calender. Background technique [0002] Calenders and mills are very important equipment in the production process of rubber and plastic products. In the production process, plastic products generally need to be heated for production, and rubber products usually need to be cooled for production. This requires heating or cooling the rollers to maintain the uniformity of the roller temperature and ensure product quality; in different production processes, it is necessary to control the roller temperature to finally meet the precision requirements required by the product. Therefore, the working surface of the rollers of the calender and the mill requires temperature control during work. [0003] In the prior art, the rollers that need to be equipped with heating or cooling functions are mostly drilled or hollow; the drilled rollers dril...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low structural mechanical strength and poor heating and cooling effects of the rollers of the mill or calender in the prior art, the present invention provides a combined roller of the mill or calender

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