Hot runner mold

Abstract

The invention discloses a hot runner mold, and belongs to the field of molds. The hot runner mold comprises a host machine nozzle arranged in the bottom of the mold, a shunting plate connected with the host machine nozzle, a hot nozzle connected with the shunting plate, a flow control device arranged on one side of the mold, and a temperature control device; a runner is formed in the shunting plate, and includes a main runner, a secondary runner and a branched runner; the main runner is connected with the host machine nozzle; the branched runner is connected with the nozzle; the main runner and the branched runner are connected through the secondary runner; the runner corners of the main runner, the secondary runner and the branched runner are all bent angles; and the sections of the main runner, the secondary runner and the branched runner are all positioned in the same one plane. The hot runner mold effectively solves the condition of material retention when products flow in the mold through the bent angles arranged in the runners, and controls the temperature thereof through the temperature control device to achieve good heat balance effect of materials in the runners.

Description

technical field [0001] The invention relates to the field of molds, in particular to a hot runner mold. Background technique [0002] Hot runner mold is a kind of plastic injection molding mold commonly used at present. Compared with mold with cold runner structure, it has many advantages such as saving raw materials, improving production efficiency, improving product quality, and simplifying product follow-up processes. [0003] At present, the existing runner is composed of three parts: the main runner, the secondary runner and the sub-runner. The above-mentioned runners are set in a special mold. The plane where the channels are located is perpendicular to each other. When the material is injected into the mold from the nozzle of the molding machine, it must first pass through the main channel, and then be injected into each secondary channel through the injection pressure of the molding machine, and finally enter the cavity through the sub-runner. [0004] In the proc...

AI Technical Summary

Problems solved by technology

[0006] The temperature in the runner is unbalanced. For materials with high melting point temperature in existing molds, such as ABS, TPE, PPO, etc., it is difficult to achieve the temperature balance of the material in the runner, which will easily cause the material to burn, fail to inject, and the product appearance is not beautiful. And other issues

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