Anisotropic NdFeB magnet compression molding device

Abstract

Provided is an anisotropic neodymium-iron-boron magnet mold pressing orientation molding device. The device comprises a mold assembly, an upper stamping part, a lower stamping part and a core rod; the mold assembly is formed by connecting a mold main body with a mold main body upper base, a mold main body lower base and an inner sleeve; the upper stamping part can vertically move along with a stamping handpiece; the upper end of the lower stamping part stretches into a mold cavity of a mold main body; the core rod is movably arranged in the lower stamping part in a penetrating mode and can vertically move, and the lower end of the core rod is movably connected with a stamping machine base; an anisotropic neodymium-iron-boron magnet prepressing part is arranged between the mold cavity of the mold main body in a heating state and the core rod and falls to the top of the lower stamping part, the upper stamping part is started to move downwards, when the upper stamping part enters the mold main body, an orientation device is conducted for magnetic-pole orientation, the upper stamping part continues moving downwards, and then the neodymium-iron-boron magnet prepressing part is pressed to be molded. According to the device, multi-magnetic-pole positioning orientation can be achieved, magnetic-pole orientation is uniform, the orientation efficiency is high, the density and the comprehensive performance of a magnet are high, and the device can be used for pressing the magnet with the small wall thickness and the large size in the height direction.

Description

【Technical field】 [0001] The invention relates to production equipment of anisotropic NdFeB magnets, in particular to an anisotropic NdFeB magnet molding orientation forming device. 【Background technique】 [0002] It is known that NdFeB magnets are the most powerful permanent magnets so far. As the third generation of rare earth permanent magnet materials, they are widely used in energy, transportation, machinery, medical, IT, home appliances and other industries due to their high performance. , especially with the development of the knowledge economy represented by information technology, new applications are constantly being brought to NdFeB rare earth permanent magnet functional materials and industrial development, and a broader market prospect is brought to the NdFeB industry. In recent years, electronic products are gradually developing in the direction of miniaturization, thinning, and high performance. For this reason, corresponding requirements are also put forward ...

AI Technical Summary

Problems solved by technology

However, the traditional magnet compression molding equipment usually has low orientation rate during the anisotropic bonded NdFeB thermocompression molding process, and there are problems such as magnetic flux leakage, uneven magnetic poles, and large differences in magnetic properties compared to the design during the magnetic pole orientation process.

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