Tunica conjunctiva lower injection mold used for teaching

Abstract

The invention relates to a tunica conjunctiva lower injection mold used for teaching. The tunica conjunctiva lower injection mold comprises a movable mold mounting base, a fixed mold base, guide assemblies and ventilation assemblies. A top plate is arranged in the middle of the upper end of the movable mold mounting base, and distance pieces are arranged on the periphery of the top plate. A push rod is arranged in the middle of the upper end of the top plate. A movable mold base is arranged at the upper end of a fixing plate. The fixed mold base is arranged above the movable mold base, and a mold chamber is placed between the fixed mold base and the movable mold base. A flow channel is vertically formed in the middle of the fixed mold base. The guide assemblies comprise guide pillars and guide holes which are matched with each other. Primary magnets of a cone structure are arranged at the upper ends of the guide pillars. Secondary magnets are arranged at the upper ends of the insides of the guide holes. The ventilation assemblies comprise primary ventilation pipes and secondary ventilation pipes. The primary ventilation pipes and the secondary ventilation pipes are in up-down butt joint for communicating so that a C-shaped ventilation cavity can be formed. An air pump is arranged in a containing cavity. According to the tunica conjunctiva lower injection mold used for teaching, the cooling efficiency, positioning accuracy and quality of injection molding products are improved.

Description

technical field [0001] The invention belongs to the technical field of injection molds, in particular to a subconjunctival injection mold for teaching. Background technique [0002] Injection mold is a tool for producing plastic products. Its working principle is to inject heated and melted plastic into the mold cavity under high pressure from the injection molding machine, and obtain molded products after cooling and solidification. With the continuous improvement of the performance of plastic raw materials, the process of substituting plastic for steel and wood for parts in various industries will be further accelerated, and the proportion of using plastic molds will increase day by day, which also puts forward higher requirements for injection molds. Chinese patent CN206383434U disclosed an injection mold for the upper cover on August 8, 2017, adding a vacuum pump and vent holes, which can quickly discharge the air in the last filled place to prevent air bubbles from appe...

AI Technical Summary

Problems solved by technology

However, when conventional injection molds are injected, there are often problems such as long cooling time, low cooling efficiency, poor positioning accuracy, and easily mixed with dust in the injection molded products, which cannot achieve the expected injection molding effect.

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