Injection molding machines for the production of plastic products

Abstract

The invention discloses an injection molding machine used for producing plastic products, comprising an injection part and a die assembly part, wherein the injection part comprises a base, L-shaped front panel and rear panel, a pair of connecting boards, a charging barrel, a moving board and a second screw; a hopper is arranged at the upper part of the charging barrel, one end of the charging barrel is provided with a nozzle, the other end is sealed, and a first screw is coaxially arranged in the charging barrel; the moving board is provided with a pressure sensor and a nut; a circular-truncated-cone-shaped gum guide body with a sliding block axis of a tenon structure is arranged on the lower surface of the moving board; the bottom surface with relatively small diameter of the gum guide body faces a die; a plurality of notches are formed in the side face of the gum guide body, so as to form a plurality of passages for molten plastics to flow; and the nozzle is of a cylindrical structure, and one end, far away from the hopper, of the nozzle, is detachably provided with a circular-truncated-cone-shaped gum guide body which is coaxial with the nozzle. By adopting the injection molding machine, dislocation and offset caused by injection force or die replacement during injection of a front plate and a rear plate can be avoided, the charging barrel cannot contact with the screws, discharge speed is high, and the nozzle cannot be damaged.

Description

technical field [0001] The invention relates to a production equipment of plastic products. More specifically, the present invention relates to an injection molding machine for producing plastic articles. Background technique [0002] Injection molding machine is a device used to produce plastic products. Typically, injection molding machines form products from polyester, vinyl acetate, different kinds of plastics, nylon, etc. in the form of melted sheets or powders and place them into molds with a predetermined shape. The injection molding machine is equipped with a mold clamping part and an injection part. When the molten plastic is discharged, the nozzle contacts the mold and maintains a state where a predetermined nozzle contact force is generated against the mold. The problem existing in the existing injection molding machine is that after long-term use, the injection process of the injection molding machine will generate injection pressure between the front plate and...

AI Technical Summary

Problems solved by technology

The problem existing in the existing injection molding machine is that after long-term use, the injection process of the injection molding machine will generate injection pressure between the front plate and the rear plate, which will cause deformation and offset of the injection part, destroy the sliding track of the moving plate, increase the The risk factor of the contact between the barrel and the internal screw is eliminated, and when the nozzle leads out the molten plastic, because the material of the nozzle is generally a metal with strong thermal conductivity, but the large-particle plastic may damage the surface of the nozzle due to the excessive speed during the export process, shortening the The service life of the injection molding machine, and the high heat transfer capacity of the metal will cause sudden condensation and solidification at the nozzle when entering the mold, reducing the quality of the plastic

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