Screw machine barrel of extruder

Abstract

The invention discloses a screw machine barrel of an extruder. The screw machine barrel comprises a machine barrel body, a heat-insulating block and an abrasion-resistant sheet, wherein the outer surface of the heat-insulating block is in interference fit with the inner surface of the machine barrel body; the abrasion-resistant sheet is adhered to the inner surface of the heat-insulating block; and wave-shaped bulges are uniformly distributed on the inner surface of the machine barrel body, wave-shaped grooves are uniformly distributed in the outer surface of the heat-insulating block, and the wave-shaped bulges positioned on the inner surface of the machine barrel body are matched with the wave-shaped grooves formed in the outer surface of the heat-insulating block. By adopting the mode, the screw machine barrel disclosed by the invention can be used for enhancing the abrasion-resistant property and the heat-resistant property so that the machine barrel is difficult to abrade and can also be used for prolonging the service life, reducing the replacement frequency and cost and improving the working efficiency.

Description

technical field [0001] The invention relates to the field of extruders, in particular to an extruder screw barrel. Background technique [0002] Extrusion molding process is a molding processing method with the most varieties, the most changes, high productivity, strong adaptability, wide application and the largest proportion of output in the field of polymer processing. Extrusion molding is to make the polymer melt (or viscous fluid) pass through a die of a certain shape under the extrusion of the extruder screw, and the product is a continuous profile with a constant cross-sectional shape. [0003] Existing extruders generally use twin-screw extruders with twin-screw barrel design to strengthen the plasticizing function and ensure stable extrusion. However, the heat generated by the extrusion wear of the material and the barrel will cause the barrel to deform, and The inner wall of the machine barrel is easy to wear, resulting in short service life, high replacement freq...

AI Technical Summary

Problems solved by technology

[0003] Existing extruders generally use twin-screw extruders with twin-screw barrel design to strengthen the plasticizing function and ensure stable extrusion. However, the heat generated by the extrusion wear of the material and the barrel will cause the barrel to deform, and The inner wall of the barrel is easy to wear, resulting in short service life, high replacement frequency, high cost, and low work efficiency.

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