Manufacturing method for inductor through two times of powder feeding and structure of inductor

Abstract

A manufacturing method for an inductor through two times of powder feeding and a structure of the inductor are disclosed. In the manufacturing process of the inductor, a machine table drives a stripping module to displace to a middle die of a lower punching module for die compounding; the machine table then drives a powder-feeding base plate to slide on the stripping module for performing a first time of powder filling to the middle die, and then the powder-feeding base plate and the stripping module are turned to the normal position; next, coil material pieces are placed on the middle die; the machine table drives again the stripping module to displace to the middle die for die compounding; at the same time, the machine table drives again the powder-feeding base plate to slide on the stripping module for performing a second time of powder filling to the middle die, and then the powder-feeding base plate and the stripping module are turned to the normal position; and finally, the machine table drives an upper punching module to displace downward to the stripping module for die compounding, and the metal powder filled in the middle die is extruded to form an iron core structure coating the external of a coil.

Description

technical field [0001] The invention relates to an inductor manufacturing machine, in particular to a machine platform for manufacturing inductors with a second powder feeding step. Background technique [0002] The traditional combined inductor mainly has an I-shaped iron core of manganese-zinc ferrite, and the coil is wound on the I-shaped iron core, and then the I-shaped iron core wound with the coil is assembled in a The cross-section is U-shaped cover body to form a combined inductor. Due to the high magnetic permeability and low saturation magnetic force of this combined inductor, it is easy to be saturated during use and cannot withstand large currents, so it has not been used. [0003] Current inductors are required to withstand large currents, so most inductors are choke coils or chokes. The production of this inductor is made by pressing powder. First, a hollow coil is wound, and the hollow coil is placed in a mold. After pouring iron powder into the mold and pre...

AI Technical Summary

Problems solved by technology

[0005] Due to the one-time powder feeding action of the above-mentioned powder feeding base plate, the amount of metal powder filled in each cavity of the middle mold is uneven, resulting in uneven weight of each extruded inductor, resulting in The accuracy of powder filling is reduced, and the metal powder is not easy to manufacture. The metal powder filled in the cavity of the middle mold needs to be vibrated or shaken to make the metal powder slide smoothly into the cavity of the middle mold, thus causing difficulties in production.

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