Mould for molding super-thin soft ferrite magnetic core

A soft ferrite and molding die technology, applied in ceramic extrusion dies and other directions, can solve the problems of warping, unusable, and short moving time of products, reducing poor warping deformation, increasing manufacturing costs, and designing simple effect

Active Publication Date: 2010-05-05
中山市华佑磁芯材料有限公司
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Problems solved by technology

[0002] At present, the magnetic core molding process of the soft ferrite industry adopts powder molding technology, because the products are ultra-thin and irregular in appearance (such as figure 2 As shown), when the mold of the traditional design is formed, the powder is filled with a flat surface of the female mold. When the upper mold is pressed down, although the powder tends to move from high density to low densit...

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  • Mould for molding super-thin soft ferrite magnetic core
  • Mould for molding super-thin soft ferrite magnetic core
  • Mould for molding super-thin soft ferrite magnetic core

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Embodiment Construction

[0011] refer to figure 1 , an ultra-thin soft ferrite core molding die disclosed by the present invention, comprising a master die 1, a die hole 2 is arranged on the master die 1, a spraying groove 3 is arranged on the edge of the die hole 2, and the spraying The trough is one or more side edges set according to the shape of the product. The depth of the spray trough designed for different side edges is different, so as to cooperate with the molding action during molding, and the powder of the small volume is passed through the spray trough in the molding process. During the process, the excess powder is sprayed out to achieve the purpose of consistent density of each part, so that the density of each part can be made uniform when molding the above-mentioned products, and the warping and deformation caused by the difference in density can be avoided or minimized, so as to achieve mass production. The purpose of producing ultra-thin (height less than 0.5mm) soft ferrite cores ...

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Abstract

The invention discloses a mould for molding a super-thin soft ferrite magnetic core, comprising a case mould which is provided with a nib. The mould is characterized in that the edge of the nib is provided with a material spraying slot; by adopting the invention, powder at a higher density part in molding process can be sprayed out by the material spraying slot, thereby ensuring uniform density of each part when molding above products, avoiding or maximally reducing poor buckling deformation generated by density difference, thus reaching the purpose of massively producing super-thin soft ferrite magnetic core with the height less than 0.5mm. The mould has simple design, does not change original operation mode, has no need of specifically training operating personnel and does not increase manufacturing cost.

Description

technical field [0001] The invention relates to a die design for stamping and forming of a soft magnetic ferrite core, which belongs to the technical field of stamping and forming of ceramic material powder metallurgy. Background technique [0002] At present, the magnetic core molding process of the soft ferrite industry adopts powder molding technology, because the products are ultra-thin and irregular in shape (such as figure 2 As shown), when the traditional design of the mold is formed, the powder is filled with a flat surface of the female mold. When the upper mold is pressed down, although the powder tends to move from high density to low density, because the product is very thin, the movement The time is very short, the space is small, and the molded product will cause a large density difference. Due to the density difference, the product will have a poor shrinkage rate during sintering. Because the shrinkage rate of each part of the product is different, the sintere...

Claims

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Application Information

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IPC IPC(8): B28B3/26
Inventor 詹中仪
Owner 中山市华佑磁芯材料有限公司
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