Mechanism used for cutting off side gate in mold automatically and suitable for injection mold

Abstract

The invention provides a mechanism used for cutting off a side gate in a mold automatically and suitable for an injection mold. The injection mold comprises a front mold and a rear mold. The front mold and the rear mold are matched to form a matching body, and the matching body is provided with a mold cavity for plastics to be manufacture into a product. The mechanism comprises the side gate arranged in the matching body and a gate insert. The side gate comprises a gate and a runner, the gate is in a shape of a corner, one end of the corner is inclined to the mold cavity, the gate insert and the gate are matched with each other, and the gate insert is provided with a separating portion for separating the gate and the product. By arranging the gate in a shape of a corner and the gate insert matched with the gate, the separating portion on the gate insert is easy to separate the gate and the product in cutting mode during mold releasing, cutting precision is high, and cutting marks are avoided effectively. In addition, the mechanism is simple in structure and synchronous with mold releasing operation and guarantees machining efficiency of injection molding well.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to an in-mold automatic cut-off side gate mechanism suitable for injection molds. Background technique [0002] In the injection mold industry, because the side gate structure has the advantages of rapid flow filling, small pressure loss, and few injection defects, it has become a commonly used pouring structure in this industry. However, after the product is molded by the mold, a separation process between the product and the gate is required. For this separation process, manual trimming can be selected, that is, the product and the gate are separated by manpower without deepening the mold design. Separation will not only increase the labor cost and reduce the production efficiency of injection molding, but also the manual repair of the material will easily cause obvious shear marks at the gate of the product, which will undoubtedly increase the appearance defects of the product; at ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an in-mold automatic cut-off side gate mechanism suitable for injection molds, so as to solve the problem of easy occurrence of cut marks between separated products and gates in the prior art, and is only limited to products with small thickness. , and solve the problem that the overall structure of the prior art is too complicated so that the cost of mold design is relatively high

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