Screwdriver handle preparation method and screwdriver

Abstract

The invention discloses a screwdriver handle preparation method and a screwdriver, and relates to the technical field of hardware tools. The method comprises the steps of 100, an inner core is injection-molded and the inner core is provided with channels for communicating cavities with the outside; 200, the inner core is placed in a cooling medium for cooling, wherein the interface of the coolingmedium is positioned below the channels; and 300, an outer layer is injection-molded at least one time to fill the channels and the cavities. In the process of injection-molding the inner core, the channels which communicate with the cavities are reserved, and then the outer side of the inner core is injection-molded again, so that the channels and the cavities are filled with the outer layer to obtain a solid handle with improved internal strength; and after a cutter bar is connected with the handle, the loosening phenomenon is not easy to occur when the cutter bar applies a force to the handle, so that the production quality of the screwdriver is improved.

Description

technical field [0001] The invention relates to the technical field of hardware tools, more specifically, it relates to a preparation method of a screwdriver handle and a screwdriver. Background technique [0002] A screwdriver is a tool used to turn a screw into place and consists of a handle and a shaft, usually with a thin wedge-shaped head at one end that fits into a slot or notch in the head of the screw. The general handle is formed by one-shot injection molding using an injection molding machine. However, in the process of actual use, once the number of times of use is too high, the tool holder is prone to loosening. [0003] The handle is generally made of plastic. During the injection molding process, the plastic is heated and melted and injected into the mold of the injection molding machine, and then cooled and formed. When the plastic is in the molten state, the orientation of the molecular chain is small. After molding, the molecular chain returns to its natur...

AI Technical Summary

Problems solved by technology

When the plastic is in the molten state, the orientation of the molecular chain is small. After molding, the molecular chain returns to its natural state due to the temperature drop, and the distance between the chains is reduced, resulting in shrinkage of the product. Therefore, it is easy to generate a cavity inside the handle, resulting in a The connection strength of the screwdriver becomes lower, which makes the tool holder prone to loosening and reduces the production quality of the screwdriver

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