Tile-type combined roller cover

Abstract

The invention relates to the technical field of extrusion forming equipment, in particular to a tile-type combined roller cover. The tile-type combined roller cover comprises a roller cover block, roller cover hoops, screw rod fasteners, roller cover keys and a roller shaft. The roller cover block is provided with pillow-shaped concave bags which are arranged in a honeycomb mode, bosses with a taper are arranged at two sides of the roller over block, a concave-convex mortise and tenon structure is arranged on the inner arc surface, and key grooves are formed in the inner arc surface; the roller cover hoops are provided with bosses with a taper, and grooves are formed in the position, corresponding to the roller cover keys, of the inner arc face; each screw rod fasteners comprises a long screw rod penetrating through the roller cover and the roller cover hoops at two ends, and comprises hexagonal nuts and cover-type nuts which are arranged at two ends; each roller cover key is providedwith a stepped hole for containing a hexagon socket cap screw; and the roller shaft is provided with an annular groove for installing the roller cover block, two groups of tile-type combined roller covers are installed, the key grooves for the roller cover keys are arranged in the groove, and a threaded hole is formed in the center of the bottom of each key groove.

Description

technical field [0001] The invention relates to the technical field of extrusion molding equipment, in particular to a tile-type combined roller skin. Background technique [0002] The extrusion granulator is a granulation equipment that uses pressure to agglomerate solid materials, and has two counter-rotating rollers. When the solid material is squeezed, the air between the powder particles is removed to rearrange the particles, so as to eliminate the gaps between the materials and finally achieve the purpose of granulation. At present, the separated roll skin of the double-roll extrusion machine is circular, and the roll skin is subjected to a large tensile stress through shrink fit and interference fit with the roll shaft. The ring-shaped roll skin is prone to cracking at the edge of the inner ring during the extrusion process, resulting in the scrapping of the roll skin. When the size of the roll skin needs to be increased, the manufacturing and heat treatment of a si...

AI Technical Summary

Problems solved by technology

The ring-shaped roll skin is prone to cracking at the edge of the inner ring during the extrusion process, resulting in the scrapping of the roll skin

When the size of the roll skin needs to be increased, the manufacturing and heat treatment of a single roll skin is difficult and the yield is low

The hot-loading process takes a long time and requires a lot of space and tools

In case of local serious damage, the entire roller skin needs to be replaced

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