Roller in open mill

Abstract

The invention discloses a roller in an open mill. The roller includes: a body channel running through the inside of the roller body longitudinally. A roll shaft at one end of the roller body is provided with a liquid outlet channel running through the roll shaft, a liquid feed channel is disposed in the liquid outlet channel, the liquid feed channel is intercommunicated with the body channel, the roller body surface is equipped with a spirally surrounding heat exchange tank, the inner wall of the roller body's roller surface layer and the heat exchange tank form a sealed and spiral cutthrough heat exchange channel, the liquid feed end of the heat exchange channel is communicated with the body channel, and the liquid outlet end of the heat exchange channel is communicated with the liquid outlet channel. According to the invention, the spirally surrounding heat exchange channel makes the surface temperature of the roller surface layer uniform, thus greatly enhancing the quality of the finished product. In addition, the heat exchange tank forming the spirally surrounding heat exchange channel can be prepared through turning, and processing is very convenient, thus greatly reducing the making difficulty of the heat exchange channel and lowering the processing cost of the roller.

Description

technical field [0001] The invention relates to the technical field of mills, in particular to rollers in the mill. Background technique [0002] Mill is a commonly used equipment in plastic processing and production. According to the process requirements of different products, a pair of rollers in the mill needs to heat or cool down the material when rolling the material. The structure of the roller on the traditional open mill includes: the roller body, the two ends of the roller body are roller shafts, the body flow channel is longitudinally arranged in the roller body, and the roller shaft at one end is provided with a liquid outlet. Channel, the liquid outlet channel is also provided with an independent liquid inlet channel, the liquid outlet channel is not connected to the liquid inlet channel, the liquid inlet channel and the body flow channel are connected to each other, and the roller body near the outer surface of the roller body There are several heat exchange c...

AI Technical Summary

Problems solved by technology

[0003] The rollers in the traditional mill have the following defects: 1. The heat exchange channel, the liquid inlet connecting pipe and the liquid outlet connecting pipe are all deep holes arranged on the roller body, and the processing of the deep holes is difficult and difficult to process cumbersome and high processing costs; 2. The heat exchange channels are arranged at intervals on the inner circumference of the surface of the roller body, which leads to uneven temperature on the surface of the roller, which makes the material heated unevenly, which in turn affects the quality of plastic products

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