A kind of preparation method of screwdriver handle and screwdriver

Abstract

The invention discloses a screwdriver preparation method for a screwdriver handle, which relates to the technical field of hardware tools. The preparation method comprises the following steps: Step 100: injecting an inner core, and a channel connecting the cavity and the outside is arranged on the inner core; Step 200: inserting the inner core The core is placed in a cooling medium for cooling, and the interface of the cooling medium is located under the channel; Step300: At least one outer layer is injected to fill the channel and the cavity. In the process of injection molding the inner core, a channel communicating with the cavity is reserved, and then the outside of the inner core is injected again, so that the outer layer can fill the channel and cavity, obtain a solid handle, and improve the internal strength of the handle. After the handle is connected, when the knife bar exerts force on the handle, it is not easy to loosen, thereby improving the production quality of the screwdriver.

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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