Railway embedded sleeve automatic thread demoulding injection mold and demoulding method

Abstract

The invention relates to a railway embedded sleeve automatic thread demoulding injection mold and a demoulding method. The railway embedded sleeve automatic thread demoulding injection mold comprises a front mold, a back mold, a thread demoulding device, a sliding rotation support and a motor; the back mold is installed on the sliding rotation support, the motor is installed below the sliding rotation support, and the sliding rotation support is installed on an injection molding machine tie bar and can slide along the injection molding machine tie bar; the front mold and the thread demoulding device are arranged at the front portion and the back portion of the back mold correspondingly, the front mold is installed on an injection molding machine fixed mold plate, and the thread demoulding device is installed on an injection molding machine movable mold plate; and the front mold and the back mold are combined into the complete mold, injection molding of the sleeve product is completed, the sleeve product is unscrewed from a back mold thread mold core through thread demoulding device and is ejected out of the mold. Two working procedures including the railway embedded sleeve injection molding process and the thread demoulding process are separated, and automatic thread demoulding is achieved after injection molding; and after the two independent mechanisms are separated, the length and width sizes of the mold can be decreased, one injection molding machine is used, the number of mold cavities can be increased, and the production efficiency of the mold is improved.

Description

technical field [0001] The invention belongs to the technical field of mold structures, and in particular relates to an injection mold for automatic thread removal of a railway pre-embedded casing and a demoulding method thereof. [0002] technical background [0003] With the intensification of competition in the railway product market and the rise of labor costs, it is necessary to improve the labor intensity of workers. Improving production efficiency, reducing operators, and reducing machinery and equipment have become the development direction of automatic molds for railway products. [0004] A set of molds for the traditional manual machine external threaded core pre-embedded casing mold can only have four holes in one mold at most, which is low in efficiency; a mold with two holes in one mold must be equipped with a person to operate, and a mold with four holes in Two-person operation, the operator needs to remove the threaded core from the mold, use the threaded tool...

AI Technical Summary

Problems solved by technology

[0006] 1. Since the threaded core is retreated in the machine, the injection molding time is taken up for the core withdrawal and core entry, resulting in a longer injection molding cycle than manual moulds;

[0007] 2. Due to the need for threaded core to rotate and withdraw the core, the transmission mechanism is complicated, and the length and width of the mold are large. Using the same injection molding machine, the number of mold cavities that can be expanded is small

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