CN101625926B

CN101625926B - Method for manufacturing integrated inductor

Info

Publication number: CN101625926B
Application number: CN2008100227221A
Authority: CN
Inventors: 王霞; 潘学仁; 栾长平
Original assignee: 潘学仁
Priority date: 2008-07-10
Filing date: 2008-07-10
Publication date: 2011-12-07
Anticipated expiration: 2028-07-10
Also published as: CN101625926A

Abstract

The present invention relates to a method for manufacturing an electrical element. The integrated inductor is formed by embedding and pressing a winding body into magnetic powder; and the magnetic powder is filled into a powder forming machine twice, namely the magnetic powder is added into a die cavity of the powder forming machine first, then the winding body is put into the powder forming machine, and the magnetic powder is added into the powder forming machine again; and the twice added powder ensures that the winding body is arranged in the middle part of a seat body of the integrated inductor. After pressing the product, the upper half part of the product is demoulded firstly and then the lower half part is demoulded. The integrated inductor adopts twice powder adding technology, ensures that a winding in the middle of the magnetic powder is stressed evenly and vertically and the stresses of stubs of the winding are mutually counteracted to ensure the integrity of the stubs of the winding; and the demoulding adopts a bidirectional demoulding mode to ensure that the lateral surface of a blank does not produce cracks.

Description

The manufacture method of integrated inductor

Technical field

The present invention relates to a kind of manufacture method of electric component, relate in particular to a kind of manufacture method of integrated inductor.

Background technology

Integrated inductor has higher inductance and littler leakage inductance, so become the main manufacture of making inductance, the method of domestic traditional manufacturing integrated inductor adopts and once adds powder, once add powder often because of magnetic skewness about the winding, cause the solder joint of winding stitch to rupture easily, and the product that the demoulding is come out ftractures easily, and ratio of briquetting is low.

Summary of the invention

The present invention is directed to above-mentioned defective, purpose is to provide a kind of manufacture method of simple to operate, integrated inductor that ratio of briquetting is high.

Technical scheme of the present invention is: winding body is imbedded to suppress in the Magnaglo and is formed, Magnaglo is packed in the powder former at twice, promptly earlier in the die cavity of powder former, add Magnaglo, then put into winding body, and then the adding Magnaglo, the amount of the powder of twice adding is so that winding body is laid in the middle part of integrated inductor is advisable.

Choice of powder make-up machine processing of the present invention comprises following procedure of processing:

(1) at first promotes concave template (9), and drive die (8) rises to certain altitude, make between die (8) and the bottom punch (12) and form die cavity, core bar (10), core bar backing plate (11), bar (14), core bar plate (15) and core bar extension bar (17) are driven upwards by core bar cylinder (20) and float, locate by upper limit nut (18) then, the upper surface of core bar (10) is flushed with the upper surface of die (8), can not stay residual Magnaglo when guaranteeing a feeding at core bar (10) end face;

(2) one defective material boots (25) are pushed ahead, and carry out a feeding, have sent material back one defective material boots (25) to retreat to the rear end;

(3) die (8) and concave template (9) move upward again, form one section new die cavity again, and core bar (10) can not continue because limited up, so it is poor that the upper surface of core bar (10) and the upper surface of die (8) form a section, utilizes this section difference to put into winding body;

(4) airdraulic actuator (2) epicoele air inlet, air pressure is 0.4-1.0Mpa, promotes the upper surface formation annular seal space that fovea superior template (7) upper cavity die (6) comes downwards to die (8), upper cavity die (6) is pressed on the winding body on the upper surface of core bar (10) simultaneously;

(5) powder feeding cylinder (24) promotion two defective material boots carry out the secondary powder feeding, satisfy the secondary powder sending quantity by the thickness of secondary powder feeding plate (21) and the cavity dimension on the secondary powder feeding plate (21), two defective material boots (23) utilize screw to be connected with spring with flashboard (22), lay respectively at the top and bottom of secondary powder feeding plate (21), two defective material boots (23) are when advancing, flashboard (22) cuts out the die cavity on the secondary powder feeding plate (21), powder fills up die cavity, two defective material boots (23) are when retreating, flashboard (22) also retreats thereupon, falls in the die cavity of upper cavity die (6) to guarantee the Magnaglo in secondary powder feeding plate (21) die cavity;

(6) going up contiguous block (1), to drive guide pillar (3), upper punch (4), patrix punching (5) descending together, upper punch (4) enters the die cavity of upper cavity die (6) by secondary powder feeding plate (21), Magnaglo in upper cavity die (6) and die (8) die cavity is suppressed, and press power is between 2-4Mpa;

(7) after compacting finishes, upper punch (4) continues contacting of maintenance and goods, make airdraulic actuator (2) cavity of resorption oil-feed this moment, pressure is about 2Mpa-7Mpa, it is up to drive upper cavity die (6) and fovea superior template (7), realize the first half demoulding of goods, core bar (10), core bar backing plate (11), bar (14), core bar plate (15) and core bar extension bar (17) are driven downwards by core bar cylinder (20) and float, locate by lower position nut (19) then, it is descending that concave template (9) drives die (8) simultaneously, realizes the Lower Half demoulding of goods;

(8) demoulding finishes, and takes out goods, and it is up to go up contiguous block (1) drive guide pillar (3), upper punch (4), patrix punching (5) simultaneously.

Integrated inductor of the present invention adopts and adds the powder technology twice, guarantees that lower stress is even on the middle winding of Magnaglo, and the winding stitch is stressed cancels out each other, and guarantees the complete of winding stitch, and two-way stripping means is adopted in the demoulding, does not crack to guarantee the blank side.

Description of drawings

Fig. 1 is the structural representation of the used powder former of the present invention

1 is that last contiguous block, 2 is flashboard for secondary powder feeding plate, 22 for core bar cylinder, 21 for lower position nut, 20 for upper limit nut, 19 for core bar extension bar, 18 for bottom punch packing ring, 17 for core bar plate, 16 for bar, 15 for die plate down, 14 for following punch die, 13 for core bar backing plate, 12 for core bar, 11 for concave template, 10 for die, 9 for fovea superior template, 8 for upper cavity die, 7 for patrix punching, 6 for upper punch, 5 for upper guide post, 4 for airdraulic actuator, 3 among the figure.

Fig. 2 is the A-A view of Fig. 1

23 is that two defective material boots, 24 are the powder feeding cylinder among the figure.

Fig. 3 is the B-B view of Fig. 1

25 is that defective material boots, 26 are a powder feeding plate among the figure.

Embodiment

Winding body among the present invention is imbedded to suppress in the Magnaglo and is formed, Magnaglo is packed in the powder former at twice, promptly earlier in the die cavity of powder former, add Magnaglo, then put into winding body, and then the adding Magnaglo, the amount of the powder of twice adding is so that winding body is laid in the middle part of integrated inductor is advisable.

The present invention is described further below in conjunction with accompanying drawing

Concrete manufacture method of the present invention is as follows:

(1) at first promotes concave template 9, and drive die 8 rises to certain altitude, make between die 8 and the bottom punch 12 and form die cavity, core bar 10, core bar backing plate 11, bar 14, core bar plate 15 and core bar extension bar 17 are driven upwards by core bar cylinder 20 and float, then by upper limit nut 18 location, the upper surface of core bar 10 is flushed with the upper surface of die 8, can not stay residual Magnaglo when guaranteeing a feeding at core bar 10 end faces;

(2) one defective material boots 25 are pushed ahead, and carry out a feeding, have sent material back one defective material boots 25 to retreat to the rear end;

(3) die 8 and concave template 9 move upward again, form one section new die cavity again, and core bar 10 is because limited, can not continue uply, so that the upper surface of the upper surface of core bar 10 and die 8 forms a section is poor, utilize this section difference to put into winding body;

(4) airdraulic actuator 2 epicoele air inlets, air pressure is 0.4-1.0Mpa, promotes the upper surface formation annular seal space that fovea superior template 7 upper cavity dies 6 come downwards to die 8, upper cavity die 6 is pressed on the winding body on the upper surface of core bar 10 simultaneously;

(5) powder feeding cylinder 24 promotions two defective material boots carry out the secondary powder feeding, satisfy the secondary powder sending quantity by the thickness of secondary powder feeding plate 21 and the cavity dimension on the secondary powder feeding plate 21, two defective material boots 23 utilize screw to be connected with spring with flashboard 22, lay respectively at the top and bottom of secondary powder feeding plate 21, when two defective material boots 23 advance, flashboard 22 cuts out the die cavity on the secondary powder feeding plate 21, powder fills up die cavity, when two defective material boots 23 retreat, flashboard 22 also retreats thereupon, falls in the die cavity of upper cavity die 6 to guarantee the Magnaglo in secondary powder feeding plate 21 die cavitys;

(6) going up contiguous block 1, to drive guide pillar 3, upper punch 4, patrix punching 5 descending together, and upper punch 4 enters the die cavity of upper cavity die 6 by secondary powder feeding plate 21, and the Magnaglo in upper cavity die 6 and die 8 die cavitys is suppressed, and press power is between 2-4Mpa;

(7) after compacting finishes, upper punch 4 continues contacting of maintenance and goods, make airdraulic actuator 2 cavity of resorption oil-feeds this moment, pressure is about 2Mpa-7Mpa, and it is up to drive upper cavity die 6 and fovea superior template 7, realizes the first half demoulding of goods, core bar 10, core bar backing plate 11, bar 14, core bar plate 15 and core bar extension bar 17 are driven downwards by core bar cylinder 20 and float, by lower position nut 19 location, concave template 9 drive dies 8 are descending simultaneously, realize the Lower Half demoulding of goods then;

(8) demoulding finishes, and takes out goods, and it is up to go up contiguous block 1 drive guide pillar 3, upper punch 4, patrix punching 5 simultaneously.

Claims

1. the manufacture method of integrated inductor, winding body is imbedded in the Magnaglo compacting to form, it is characterized in that, Magnaglo is packed in the powder former at twice, promptly earlier in the die cavity of powder former, add Magnaglo, then put into winding body, and then add Magnaglo, the amount of twice adding powder makes winding body be laid in the middle part of integrated inductor pedestal; It comprises following procedure of processing:

(1) at first promotes concave template (9), and drive die (8) rises to certain altitude, make between die (8) and the bottom punch (12) and form die cavity, core bar (10), core bar backing plate (11), bar (14), core bar plate (15) and core bar extension bar (17) are driven upwards by core bar cylinder (20) and float, locate by upper limit nut (18) then, the upper surface of core bar (10) is flushed with the upper surface of die (8), do not stay residual Magnaglo when guaranteeing a feeding at core bar (10) end face;