A kind of injection molding device for plastic abrasive molding

Abstract

The invention relates to the technical field of casting moulds, and discloses an injection molding device for molding plastic molds. A circular through hole is opened on both sides of the outer surface of the discharge pipe, and one end of the circular through hole is fixedly installed with a flow limiting device. device. Make the plastic in the molten state inside the discharge pipe flow to the inside of the mold during the pushing process of the pushing device. At this time, the pressure inside the flow limiting device is relatively small and the stroke plate is subjected to The thrust of the thrust and the elastic force of the current limiting spring are balanced with each other, so that the outflow pipe moves until it is completely in the high-pressure discharge hole and the plastic in the melted state cannot flow out of the outflow hole, so that the plastic in the melted state can only pass through the discharge pipe It flows into the mold, so as to ensure that sufficient plastic enters the mold, avoids the problem of air bubbles in the finished product or the finished product is not formed due to insufficient material supply, and improves the stability of the device when feeding.

Description

technical field [0001] The invention relates to the technical field of casting moulds, in particular to an injection molding device for molding plastic abrasive molds. Background technique [0002] In the production process of plastic products, it is necessary to use an injection molding machine for one-time molding of plastics. The injection molding machine melts the plastic particles by heating them, and then pushes the melted plastic into the mold with a pusher device, so that the melted The plastic can be molded directly in the mold under the state, and the plastic in the molten state can be solidified by means of cooling, so as to realize demoulding. This is the most widely used injection molding machine structure at present. It has simple structure, convenient use, and high degree of automation. High and stable operation, low failure rate and other advantages. [0003] The injection molding machine of this traditional structure still has certain limitations in the pro...

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Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing injection molding device for plastic abrasive molding proposed in the background technology, the present invention provides an injection molding device for plastic abrasive molding. The advantage of adjusting the stroke distance of the traditional equipment solves the problem of complicated operation caused by adjusting the stroke distance of the pusher device after changing the abrasive tool.

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