Plastic-coated magnet and manufacturing method thereof

Abstract

The invention belongs to the technical field of magnet application, and particularly relates to a plastic-coated magnet and a manufacturing method thereof. The plastic-coated magnet comprises a magnetbody and plastic-coated layers with which the magnet body is coated; the magnet body comprises a magnetic working area and an assembling area, the magnetic working area is coated with a first plastic-coated layer, the assembly area is coated with a second plastic-coated layer, sealing matching exits between the first plastic-coated layer and the second plastic-coated layer, and the injection molding liquidity of a first plastic-coated layer material is larger than the injection molding liquidity of a second plastic-coated layer material. According to the plastic-coated magnet and the manufacturing method thereof, it is guaranteed that the plastic-coated layers of a plastic-coated magnet product have reliable strength, and the adverse influence on the magnetic performance of the magnet canalso be reduced; as the first plastic-coated layer is formed through injection molding, compared with a traditional manufacturing method, the machining step is also omitted, the manufacturing processis simplified, waste of plastic-coated materials during machining is also avoided, and the manufacture cost is thus reduced.

Description

technical field [0001] The invention belongs to the technical field of magnet applications, and in particular relates to a rubber-coated magnet and a manufacturing method thereof. Background technique [0002] With the advancement of science and technology, magnets are widely used in many industries. In some industries, magnet products are used in harsh environments, such as: high temperature, large temperature difference, high humidity, and contact with corrosive liquids or gases. Currently , Usually, the magnet is completely wrapped with plastic to realize the protection of the magnet in these environments. [0003] Wrapping the plastic layer outside the magnet can protect the magnet, but the plastic wall thickness of the package will have an adverse effect on the magnetism of the magnet. The weaker it is, so it is generally desired that the plastic layer has a thinner wall thickness, and it is generally desired that the thickness is 0.5mm or less. [0004] In the actu...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a rubber-coated magnet structure and its manufacture that can simplify the manufacturing process, reduce the waste of plastic materials, and save manufacturing costs in view of the problems of complex procedures and waste of plastic materials in the production process of the current rubber-coated magnets. craft

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