CN203092725U

CN203092725U - Improved structure of FER-type ferrite core molding upper mold

Info

Publication number: CN203092725U
Application number: CN 201320041174
Authority: CN
Inventors: 高伟华
Original assignee: KUNSHAN NICERA ELECTRICAL APPLIANCE CO Ltd
Current assignee: KUNSHAN NICERA ELECTRICAL APPLIANCE CO Ltd
Priority date: 2013-01-25
Filing date: 2013-01-25
Publication date: 2013-07-31
Anticipated expiration: 2023-01-25

Abstract

The utility model discloses an improved structure of an FER-type ferrite core molding upper mold. According to the improved structure, a first press block and a second press block are fixedly arranged on a molding face of an upper mold base, the cross section of the first press block and the cross section of the second press block are of long-strip-shaped structures, the two ends of each long-strip-shaped structure are bent to the same direction to form foot portions, the two foot portions of the first press block face towards the back faces of the foot portions of the second press block, with the using direction of the molding upper mold as a basic standard, an inclined face is formed on the lower end faces of the two foot portions of the first press block and the lower end faces of the two foot portions of the second press block respectively, the inclined faces located on the two foot portions of the first press block and the two foot portions of the second press block are oppositely arranged, and therefore corresponding inclined faces are formed in the positions, corresponding to the foot portions, of non-sintering blanks after being manufactured in a pressed mode, when molded blanks are sintered, the inclined face portions of the blanks hang down at high temperature, the portions which are bent inwards in size and located between two legs of the blanks are improved due to the effect of hanging down force, the problem that final products are bad in size is solved, the products can be normally inserted into a framework of a transformer, and yield of the products is increased to current 94% from original 60%. .

Description

The structure-improved of FET type ferrite form forming magnetic core patrix

Technical field

The utility model relates to a kind of FERRITE CORE mould, relates in particular to a kind of structure-improved of FET type ferrite form forming magnetic core patrix.

Background technology

FERRITE CORE is a kind of high frequency permeability magnetic material, it is mainly used in the manufacturing of various inductors, transformer, wave filter and choke coil, be widely used in the hyundai electronics message area, as fields such as computer and external equipment, business automation equipment, digital communication and artificial traffic equipment, electromagnetic compatibility equipment and industrial automations.In the prior art, FERRITE CORE adopts sintering process to form mostly, is example with the manganese-zinc ferrite magnetic core, with Fe ₂O ₃, Mn ₃O ₄With ZnO be primary raw material, obtain the manganese-zinc ferrite powder by operations such as mixing, pre-burning, coarse crushing, sand milling and mist projection granulatings, again powder is added to and carries out the moulding compacting in the mould on the moulding press, make FERRITE CORE through sintering, grinding, check, packaging and other steps then.

Can make inductor or transformer after being arranged with coil on the FET type ferrite magnetic core, its performance requirement height, application are wide, especially require it can realize high accuracy when being used to make transformer, therefore the dimensional tolerance to FET type ferrite magnetic core finished product has proposed high request.But form forming magnetic core can only adopt perpendicular pressure mode in the compression moulding technology of present such magnetic core, the two legs of blank down during moulding, stressed inconsistent because of along leg direction FERRITE CORE powder during extruding, be that two ends are stressed big, middle stressed little, cause the Density Distribution inequality of the blank of production along the leg direction, be that two ends density is big, intermediate density is little, then the end of gained finished product leg curves inwardly behind the sintering, makes that the end of finished product leg and root size are inconsistent, causes bigger dimensional tolerance, thereby make product can not insert in the skeleton of transformer, seriously reduced the qualification rate of product.

The utility model content

In order to overcome above-mentioned technological deficiency, the utility model provides a kind of structure-improved of FET type ferrite form forming magnetic core patrix, the end of the FET type ferrite magnetic core leg that the moulding patrix after this improvement suppresses and root size are always, can normally insert in the transformer framework, improve the product yields.

The technical scheme that the utility model adopts in order to solve the problems of the technologies described above is:

A kind of structure-improved of FET type ferrite form forming magnetic core patrix, comprise the patrix base, be installed with first and second briquetting on the forming surface of this patrix base at interval, the all elongated structure of the cross section of this first and second briquetting, and the two ends of this strip structure all extend to form foot towards bending in the same way, two foots of described first briquetting are towards the back side of second briquetting, two foots, service orientation with the moulding patrix is a benchmark, first briquetting is formed with one first inclined plane respectively on the two foot lower surfaces, and two described first inclined planes are oppositely arranged; Second briquetting is formed with one second inclined plane respectively on the two foot lower surfaces, and two described second inclined planes are oppositely arranged.

Its further technical characterictic is:

The height on described first and second inclined plane is 0.10mm.

Useful technique effect of the present utility model is: the utility model is formed with an inclined plane respectively on two foot lower surfaces of briquetting, and this lays respectively at inclined plane on two foots and is and is oppositely arranged, the corresponding foot of the not sintering blank of gained place will form respective ramp after compacting like this, and in the sintering process of moulded blank, the chamfered portion of blank is at high temperature sagging naturally, between blank two legs the size part that curves inwardly improve because of the effect that is subjected to this sagging power, thereby reduced the large scale tolerance, solve the bad problem of final products size, it can normally be inserted in the transformer framework, and the product yields bring up to present 94% from original 60%.

Description of drawings

Fig. 1 is the structural representation of prior art moulding patrix;

The FET type ferrite core structure schematic diagram of Fig. 2 for adopting prior art moulding patrix to suppress;

Fig. 3 is the utility model structural representation;

The FET type ferrite core structure schematic diagram of Fig. 4 for adopting the utility model moulding patrix to suppress;

Wherein: 1-patrix base; 2-first briquetting; 21-first inclined plane; 3-second briquetting; 31-second inclined plane; The 4-foot.

The specific embodiment

In conjunction with Fig. 3 to Fig. 4 the utility model is described in further detail.

A kind of structure-improved of FET type ferrite form forming magnetic core patrix, comprise patrix base 1, be installed with first briquetting 2 and second briquetting 3 on the forming surface of this patrix base 1 at interval, the all elongated structure of the cross section of this first briquetting 2 and second briquetting 3, and the two ends of this strip structure all extend to form foot 4 towards bending in the same way, two foots of described first briquetting 2 are towards the back side of 3 liang of foots of second briquetting, service orientation with the moulding patrix is a benchmark, first briquetting is formed with one first inclined plane 21 respectively on 2 liang of foot lower surfaces, and two described first inclined planes 21 are oppositely arranged, the i.e. high-end outside that all is positioned at first briquetting, 2 strip structures on two described first inclined planes 21, the bottom on two first inclined planes 21 all is positioned at the centre of first briquetting, 2 strip structures; Second briquetting is formed with one second inclined plane 31 respectively on 3 liang of foot lower surfaces, and two described second inclined planes 31 are oppositely arranged, the i.e. high-end outside that all is positioned at first briquetting, 2 strip structures on two described first inclined planes 21, the bottom on two first inclined planes 21 all is positioned at the centre of first briquetting, 2 strip structures.The height that optimum is chosen described two first inclined planes 21 and two second inclined planes 31 is 0.10mm.And in the utility model, the size of the distortion that curves inwardly between two legs when height on two first inclined planes 21 and two second inclined planes 31 can be according to FET type ferrite magnetic core blank sintering decides.

Claims

1. the structure-improved of a FET type ferrite form forming magnetic core patrix, comprise patrix base (1), be installed with first at interval on the forming surface of this patrix base (1), two briquettings (2,3), this is first years old, two briquettings (2,3) all elongated structure of cross section, and the two ends of this strip structure all extend to form foot (4) towards bending in the same way, two foots of described first briquetting (2) are towards the back side of second briquetting (3) two foots, service orientation with the moulding patrix is a benchmark, it is characterized in that: first briquetting is formed with one first inclined plane (21) respectively on (2) the two foot lower surfaces, and two described first inclined planes (21) are oppositely arranged; Second briquetting is formed with one second inclined plane (31) respectively on (3) the two foot lower surfaces, and two described second inclined planes (31) are oppositely arranged.

2. according to the structure-improved of the described FET type ferrite of claim 1 form forming magnetic core patrix, it is characterized in that: the height of described first and second inclined plane (21,31) is 0.10mm.