Tool handle secondary injection molding device and method

Abstract

The invention relates to a tool handle secondary injection molding device. The tool handle secondary injection molding device comprises a three-color injection molding machine, a mold frame, a lower mold arranged at the front end of the mold frame, an upper mold provided with a heater, an upper mold lifting device, a workpiece clamping and transposition device, a primary injection molding cavity, a secondary injection molding first-color injection molding cavity, a secondary injection molding second-color injection molding cavity, and three accommodating holes of which the rear ends communicating with the primary injection molding cavity, the secondary injection molding first-color injection molding cavity and the secondary injection molding second-color injection molding cavity in a one-to-one correspondence manner. The primary injection molding cavity, the secondary injection molding first-color injection molding cavity and the secondary injection molding second-color injection molding cavity are encircled by the upper mold and the lower mold and sequentially arranged in the left-right direction. A trademark character bump is arranged on the upper side of the secondary injection molding first-color injection molding cavity. The upper mold is provided with a primary injection molding runner which separately communicates with the primary injection molding cavity and a first injection molding opening of the three-color injection molding machine, a secondary injection molding first-color runner which separately communicates with the secondary injection molding first-color injection molding cavity and a second injection molding opening of the three-color injection molding machine, and a secondary injection molding second-color runner which separately communicates with a trademark character arranged in the secondary injection molding second-color injection molding cavity and a third injection molding opening of the three-color injection molding machine.

Description

technical field [0001] The invention relates to the technical field of tools, in particular to a tool handle secondary injection molding device and method. Background technique [0002] The structure of the tool handle can be obtained from a screwdriver handle involved in the utility model of Chinese patent application number: 201921533125.5; traditional tool handles are usually made of hard plastic by injection molding, and the outer surface is not smooth enough after setting the trademark characters. Therefore, it is a problem to be solved urgently to design a secondary injection molding device and method for a tool handle that has a smooth outer surface after the trademark characters are set and has a better grip during use. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages that the current tool handles are usually made of hard plastic by injection molding, and the outer surface is not smooth enough after the tradem...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages that the current tool handles are usually made of hard plastic by injection molding, and the outer surface is not smooth enough after the trademark characters are set, and the grip feeling is poor when used. , a secondary injection molding device and method for a tool handle with a better grip when in use

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