Special injection device for polyurethane elastomer forming

Abstract

The invention discloses a special injection device for polyurethane elastomer forming. The special injection device comprises a shell, the left end of the shell is of a funnel structure, a discharge pipe is arranged at the left end of the shell, a first hand valve is arranged on the side face of the discharge pipe, and a feeding device is arranged at the upper end of the side face of the shell. Aswitch group is arranged on the right side of the upper end of the side face of the shell, a ventilation pipeline is arranged on the lower side of the right end of the side face of the shell, a sealing assembly is arranged in the shell in a sliding mode, two guide rods are symmetrically arranged on the right side faces of a push plate of the sealing assembly, and an outer sleeve is movably connected to the side face of the guide rods in a sleeving mode. The special injection device for polyurethane elastomer forming is good in leakproofness, can store, add, heat and inject and transport raw materials, can effectively improve work efficiency, saves time, prevents the solidification of the raw materials from blocking the entire injection device, meanwhile, can clean the remaining raw materials at the left end of the shell through a cone part, is convenient for cleaning the whole injection device, and is convenient to use

Description

technical field [0001] The invention relates to the technical field of polyurethane processing, in particular to a special injection device for polyurethane elastomer molding. Background technique [0002] Polyurethane elastomer is also called polyurethane rubber. Thermoplastic polyurethane rubber is cross-linked by intermolecular hydrogen bonds or lightly cross-linked between macromolecular chains. As the temperature increases or decreases, these two cross-linked structures are reversible. In the molten state or solution state, the intermolecular force weakens, and after cooling or solvent volatilization, strong intermolecular force connects together to restore the original solid performance. When polyurethane elastomer is molded and processed, Hangyong injection molding technology is used for processing. , Injection molding is to compress the fluid material forward, and then inject it into the mold at a very fast speed through the nozzle at the front end of the barrel. Aft...

AI Technical Summary

Problems solved by technology

In the molten state or solution state, the intermolecular force weakens, and after cooling or solvent volatilization, strong intermolecular force connects together to restore the original solid performance. When polyurethane elastomer is molded and processed, Hangyong injection molding technology is used for processing. , Injection molding is to compress the fluid material forward, and then inject it into the mold at a very fast speed through the nozzle at the front end of the barrel. After a certain period of time, the product is demoulded to obtain the product. When the polyurethane is stored in the injection device for a long time, it is easy to solidify, which will cause the injection device to block and reduce the work efficiency

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