A feeding device for injection molding of plastic parts

Abstract

The invention discloses a feeding device for injection molding of plastic parts, relates to the technical field of injection molding, and solves the problem that the currently used feeding device mainly feeds materials through screw propulsion, injects plastic into a mold to complete injection molding, and easily enters the air during injection molding The impurities and the air entering into the class will affect the quality of injection molding. An injection feeding device for plastic parts, comprising a bottom plate; a frame body is fixedly arranged on the top of the bottom plate; an injection molding seat pool is fixedly arranged on the rear side of the top of the frame body; Vacuum pump; the top of the bottom plate is fixed with a T-shaped sealing box by setting three groups of guide columns, and the T-shaped sealing box and the sealing seat are provided to provide a safe and closed conveying function for the feeding device, and the T-shaped sealing box is provided by the vacuum pump. The vacuum is drawn from the inside of the sealing seat and the plastic liquid is sucked into the feeding pipe for injection molding. The negative pressure of the vacuum will provide the power for conveying, and the vacuum conveying will reduce the gas impurities.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a feeding device for injection molding of plastic parts. Background technique [0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for making thermoplastic or thermosetting materials into various shapes of plastic products using plastic molding molds. The working principle of the injection molding machine is similar to that of the injection syringe. It is the process of injecting the plasticized molten plastic into the closed mold cavity with the help of the thrust of the screw, and obtaining the product after curing and shaping. [0003] After searching, for example, the patent number CN207578903U discloses a plastic part injection feeding device used in the injection of photovoltaic plastic brackets and photovoltaic protection plastic parts, including an injection shell, a transition shell, and...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of feeding device for injection molding of plastic parts, to solve the problem that the currently used feeding device proposed in the above background technology mainly carries out feeding by screw propulsion, and injects the plastic into the mold to complete the injection molding, which is easy to use during injection molding. Impurities entering the air, and entering the more miscellaneous air will affect the quality of injection molding. At the same time, air is easy to remain in the mold, and air bubbles may occur, which will affect the normal use of the plastic after setting, which is not conducive to the quality assurance of injection molding.

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