Method for integrally, nakedly and radially casting disk type radiation type magnetic conduction iron core

Abstract

The invention relates to a method for integrally, nakedly and radially casting a disk type radiation type magnetic conduction iron core, comprising the step of respectively producing an air gap plate, an upper iron yoke, a lower iron yoke and an iron core disk blank as well as the step of molding through casting. Producing the air gap plate, in which a plurality of vertical through holes are formed, a blank for the upper iron yoke, a blank for the lower iron yoke and a blank for the iron core disk for standby; carrying out casting, i.e. horizontally arranging the blank for the lower iron yoke, utilizing three dummy clubs on the blank for the lower iron yoke, annularly wrapping a plastic belt, injecting liquefied resin and arranging the insulating air gap plate and the blank for the iron core disk, piling three rows of core columns to a certain height, respectively sheathing the core columns into coil windings, pressing the blank for the upper iron yoke, tightly pulling a pull rod, and tightly pressing the insulating air gap plate and the blank for the iron core disk between the blank for the upper iron yoke and the blank for the lower iron yoke with the assistance of the liquefied resin under the action of force of the pull rod so as to realize molding through integral solidification, thereby accomplishing the integral casting of the iron core. The iron core produced by the method has the advantages of low no-load loss, good effect of heat dissipation, low noise as well as no magnetic vibration source and no limit on effectiveness.

Description

【Technical field】 [0001] The invention belongs to a casting method of a pie-type radiation-type magnetic conducting core. 【Background technique】 [0002] figure 1 It is an exploded view of the structure of the traditional pie-type radiation-type magnetic core. It is formed by curing separately, and then combined into a whole upper iron yoke 7 and lower iron yoke 1 through the tie rod 9 and fasteners, and the upper iron yoke 7 and the lower iron yoke. Three rows of core posts between the iron yokes 1 are formed, and the three rows of core posts are used to receive three coil windings. Each row of stems is formed by stacking air gap plates 4 and iron core cakes 5 in sequence. combine figure 2 , when making the core column, first follow the stacking sequence of the air gap plate 4 and the core cake 5, and stack a plurality of air gap plates and core cakes on the lower formwork 11 at intervals from bottom to top until they are stacked on the top After the last air-gap plate...

AI Technical Summary

Problems solved by technology

[0004] 1. Since there is a layer of 5-10mm thick resin casting layer 6 on the periphery of each column made by this method, it not only affects the heat dissipation of the iron core and increases the no-load loss of the iron core, but more seriously, the resin casting layer 6 Wrapped on the periphery of the pie-shaped stem, due to the difference in expansion coefficient between the two, the product is easily burst and burned due to the action of electric force during use

[0005] 2. Since the three rows of stems are casted and solidified separately under their own weight, the contours of the three rows of stems cannot be precisely controlled. Therefore, after assembly, the three rows of stems are arranged in a line on the upper iron yoke and the lower When between iron yokes, due to the influence of contour factors, the core column is prone to string movement during use, resulting in increased noise, which seriously damages the physical and mental health of the operating personnel, until the core column moves up and down in series, shifts, and breaks down the inner wall of the coil and burns product

When the core column is poured with fat in the mold body 15, the integrity of the core cake 5 and the air gap plate 4 is poor. Therefore, under the action of electric force when the product is running, vibrations are likely to occur between the sheets, cakes and air gap plates. Not only is the noise loud, but it also degrades the performance of the product, until the three are loose and scattered, causing the product to be scrapped

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