Novel magnetic assembly and preparation method thereof

Abstract

The invention discloses a novel magnetic assembly and a preparation method thereof. The novel magnetic assembly comprises a soft magnetic base material and a plastic base material coated on the soft magnetic base material; and at least one end face of the soft magnetic base material is exposed out of one end face of the plastic base material. The preparation method of the novel magnetic assembly comprises the following steps of: taking iron powder and carrying out primary injection on the iron powder by injection molding equipment to form the soft magnetic base material; and then carrying out secondary injection on a plastic material by the injection molding equipment and coating the plastic material on the soft magnetic base material to form the plastic base material, wherein at least one end face of the soft magnetic base material is exposed out of one end face of the plastic base material. According to the invention, a product can be rapidly prepared by carrying out primary injection on materials such as the iron powder and the like in an injection molding manner to form the soft magnetic base material, then carrying out secondary injection on the plastic material and coating the plastic material on the soft magnetic base material to form the plastic base material; the product has a relative small thickness, is more attractive and practical, has a firmer structure and cannot generate the condition of magnet falling, so that the use performance of the novel magnetic assembly is effectively guaranteed and the novel magnetic assembly can meet the application requirements in various places.

Description

technical field [0001] The invention particularly relates to a new type of magnetic assembly which can be used as fasteners, switches and other devices and its preparation method. Background technique [0002] At present, magnetic suction components or magnetic thrust components are used as switching devices in various daily necessities and industrial equipment, so as to realize the convenient combination of certain products that need to be used together or keep them at a certain distance from each other. For example, see Figure 1a It is a magnetic attraction component commonly used in plastic products recently, which includes an iron metal part 2 fixed in a plastic component 1 and a permanent magnet 4 fixed on another plastic component 3; see Figure 1b Shown is a magnetic thrust assembly commonly used in plastic products, which includes a permanent magnet 6 fixed on a plastic component and another permanent magnet 8 fixed on another plastic component 7, the two permanent ...

AI Technical Summary

Problems solved by technology

The permanent magnets in the magnetic suction component and the magnetic thrust component are generally fixed on the plastic component by bonding, which is inconvenient to process, and the permanent magnet is easy to fall off. At the same time, because the permanent magnet is integrally protruded on the surface of the plastic component, it is not only very unsightly , and the overall thickness of the product is too large, making it unsuitable for some specific occasions

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