CN202943736U - Permanent magnetic ferrite wet-pressing tile-shaped magnet die - Google Patents
Permanent magnetic ferrite wet-pressing tile-shaped magnet die Download PDFInfo
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- CN202943736U CN202943736U CN 201220672049 CN201220672049U CN202943736U CN 202943736 U CN202943736 U CN 202943736U CN 201220672049 CN201220672049 CN 201220672049 CN 201220672049 U CN201220672049 U CN 201220672049U CN 202943736 U CN202943736 U CN 202943736U
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Abstract
The utility model discloses a permanent magnetic ferrite wet-pressing tile-shaped magnet die which comprises an upper die and a lower die head, wherein the upper die is matched with the lower die head for use; the lower die head comprises a magnetizer lower die main body; a non-magnetic conduction layer is arranged on the upper part of the magnetizer lower die main body; and the non-magnetic conduction layer and the magnetizer lower die main body are formed by bead welding. According to the permanent magnetic ferrite wet-pressing tile-shaped magnet die, the non-magnetic conduction layer and the magnetizer lower die main body are subjected to bead welding or fusion welding and form an integrated structure, the fit clearance can be eliminated, and the phenomenon of cracking at the welded junction is avoided.
Description
Technical field
The utility model relates to a kind of mould, is specifically related to a kind of permanent ferrite wet pressure tile-shaped magnet mould.
Background technology
Watt shape ferrimagnet is widely used in automobile, motorcycle micro machine, industrial automatic control with fields such as micro machines.Its consumption grows with each passing day, and in watt shape ferrimagnet process of production, it is a wherein important operation that wet pressing is shaped, and mould is an essential condition of this operation, good and bad magnetic property and the appearance yield that directly affects product of mould.
as everyone knows, most producer all adopts the injection slip, field orientation, float and suppress, the shaping wet pressing technique of the drop-down demoulding, die cavity is in the middle of the line bag, magnetic field intensity in die cavity is directly proportional to the number of ampere turns of magnetizing coil, and the air-gap separation between two-stage is inversely proportional to, in the constant situation of the number of turn of magnetizing coil and the electric current that magnetizes, magnetic field intensity in the magnetic shoe die cavity and the distance of upper and lower mould end face are inversely proportional to, initial magnetic field intensity is the shortest because of distance bottom the patrix side and between bottom the green compact side, therefore magnetic field is the strongest, between bottom surface, patrix middle part and bottom surface, green compact middle part next, between the end of green compact radian and patrix, vertical direction is the most weak, because magnetic field intensity is different, the degree of orientation is different, therefore shrinkage factor is different, produce stress after causing the magnet sintering, cause mill to add and show micro-crack man-hour, solution is to be bordering on 1 material with permeability, the non-magnet_conductible material Substitute For Partial high permeability material that namely is commonly called as, be equivalent to increase air gap, the highfield is weakened be downfield, namely just low just not high, reach the difference that reduces green part both sides density and middle part density after the moulding of large radian tile-shaped magnet, thereby improve the manufacturing qualification rate of tile-shaped magnet,
Each producer all adopts the method for welding at present, and the non-magnetosphere that designs is made the first workpiece, and the magnetic conductor main part is second workpiece, then adopts the method for edge welding, and two workpiece are fixed together.
Precision reason due to machining, the contact-making surface of two parts will accomplish that it is very difficult that complete gapless coordinates, and the gap tends to occur monolateral, when this situation is serious, mould is after use after a while, and the lower die head forming surface can occur breaking or the weld bond cracking, when this happens, intrados at green compact can be found obvious crack defect, causes the product rejection of property in batches.
The utility model content
The utility model has overcome the deficiencies in the prior art, a kind of permanent ferrite wet pressure tile-shaped magnet mould is provided, break or the weld bond cracking to lower die head forming surface in prior art to be solved, always have certain gap affects result of use, cause the product rejection problem.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of permanent ferrite wet pressure tile-shaped magnet mould comprises upper mould, lower mould head, and described upper mould and lower mould head are used in conjunction with; Described lower mould head comprises: magnetic conductor counterdie main body, magnetic conductor counterdie main body top are provided with non-magnetic layer; Described non-magnetic layer is into a single integrated structure with the built-up welding of described magnetic conductor counterdie main body; With the main body built-up welding of magnetic conductor counterdie or melt weldering, non-magnetic layer is into a single integrated structure with magnetic conductor counterdie main body, can eliminate fit clearance, can not produce the weld bond cracking phenomena with non-magnetic layer.
Further technical scheme is that non-magnetic layer is stainless steel material.
Further technical scheme is that magnetic conductor counterdie main body is Steel material.
Compared with prior art, one of the beneficial effects of the utility model are: the non-magnetic layer of the utility model lower mould head and the built-up welding connected mode between magnetic conductor counterdie main body, namely directly melt with non-magnet_conductible material and be welded on magnetic conductor counterdie main body, can eliminate fit clearance fully, accomplish the zero clearance, accomplish the combination of complete one, can not produce the product that later stage weld bond cracking causes and scrap in batches.Improve the mould service property (quality), guaranteed the manufacturing qualification rate of watt shape permanent-magnet ferrite.
Description of drawings
Fig. 1 is the lower mould head decomposition texture schematic diagram of an embodiment of the utility model.
Fig. 2 is the lower mould header structure schematic diagram of an embodiment of the utility model.
Fig. 3 is upper mould and the lower mould header structure schematic diagram of an embodiment of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1 and Figure 2, Fig. 1 shows the lower mould head decomposition texture schematic diagram of an embodiment of the utility model, and Fig. 2 is the lower mould header structure schematic diagram of an embodiment of the utility model.The present embodiment permanent ferrite wet pressure tile-shaped magnet mould comprises upper mould and lower mould head, and upper mould and lower mould head are used in conjunction with.Upper mould is radian watt shape structure, and nock is downward, and the shape of lower mould head and upper mould is identical and cambered structure is identical.The lower mould head comprises magnetic conductor counterdie main body 102, and magnetic conductor counterdie main body 102 tops are provided with non-magnetic layer 101; In the present embodiment, the material of magnetic conductor counterdie main body 102 is 45# Steel materials, and the material of non-magnetic layer 101 is stainless steel materials.As preferred embodiment, in the present embodiment, magnetic conductor counterdie main body 102 is that built-up welding is into a single integrated structure with non-magnetic layer 101, or to be referred to as magnetic conductor counterdie main body 102 be to melt the structure that is welded into one with non-magnetic layer 101.Namely directly melt with non-magnet_conductible material and be welded on magnetic conductor counterdie main body, melt postwelding and carry out again the line cutting, be processed into the use size of the lower mould head of design, can eliminate fit clearance fully, accomplish the zero clearance, accomplish the combination of complete one, can not produce the product that later stage weld bond cracking causes and scrap in batches.Improve the mould service property (quality), guaranteed the manufacturing qualification rate of watt shape permanent-magnet ferrite.Non-magnetic layer 101 is into a single integrated structure with 102 built-up welding of magnetic conductor counterdie main body, becomes lower mould head 200 as shown in Figure 2.Lower mould head 200 after moulding can solve welded gaps, reaches to improve the mould service property (quality), has guaranteed the manufacturing qualification rate of watt shape permanent-magnet ferrite.Can not Mould Machining occur improper, the product that causes is scrapped in batches.
As shown in Figure 3, Fig. 3 shows embodiment patrix of the utility model and lower die head structural representation.the present embodiment adopts the injection slip, field orientation, float and suppress, the shaping wet pressing technique of the drop-down demoulding, die cavity is in the middle of the line bag, magnetic field intensity in die cavity is directly proportional to the number of ampere turns of magnetizing coil, and the air-gap separation between two-stage is inversely proportional to, in the constant situation of the number of turn of magnetizing coil and the electric current that magnetizes, magnetic field intensity in the magnetic shoe die cavity and the distance of upper and lower mould end face are inversely proportional to, as shown in Figure 3, initial magnetic field intensity is the shortest because of distance at AA 〞 place, therefore magnetic field is the strongest, CC 〞 place secondly, BB 〞 place is the most weak, the present embodiment will be divided into double-layer structure with the lower mould head 303 that upper mould 301 is used in conjunction with, it is magnetic conductor counterdie main body, be provided with the non-magnetic layer 304 of green compact 302 on magnetic conductor counterdie main body, reduce the difference of green part both sides density and middle part density after the moulding of large radian tile-shaped magnet, thereby improve the manufacturing qualification rate of tile-shaped magnet.Non-magnetic layer 304 is into a single integrated structure with the built-up welding of magnetic conductor counterdie main body, non-magnetic layer adopted built-up welding or melts the weldering mode with being connected of magnetic conductor counterdie main body, can solve welded gaps, reach and improve the mould service property (quality), guarantee the manufacturing qualification rate of watt shape permanent-magnet ferrite.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a specific features, structure or characteristics in conjunction with any embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also drop in scope of the present utility model.
Although a plurality of explanatory embodiment with reference to utility model is described the utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (4)
1. a permanent ferrite wet pressure tile-shaped magnet mould, comprise upper mould, lower mould head, and described upper mould and lower mould head are used in conjunction with; It is characterized in that: described lower mould head comprises: magnetic conductor counterdie main body, magnetic conductor counterdie main body top are provided with non-magnetic layer; Described non-magnetic layer is into a single integrated structure with the built-up welding of described magnetic conductor counterdie main body.
2. permanent ferrite wet pressure tile-shaped magnet mould according to claim 1, is characterized in that described non-magnetic layer is stainless steel material.
3. permanent ferrite wet pressure tile-shaped magnet mould according to claim 1, is characterized in that described magnetic conductor counterdie main body is Steel material.
4. permanent ferrite wet pressure tile-shaped magnet mould according to claim 1, is characterized in that the integrative-structure that described non-magnetic layer becomes with the built-up welding of described counterdie main body is that the line cutting processing forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672049 CN202943736U (en) | 2012-12-07 | 2012-12-07 | Permanent magnetic ferrite wet-pressing tile-shaped magnet die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672049 CN202943736U (en) | 2012-12-07 | 2012-12-07 | Permanent magnetic ferrite wet-pressing tile-shaped magnet die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202943736U true CN202943736U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220672049 Expired - Fee Related CN202943736U (en) | 2012-12-07 | 2012-12-07 | Permanent magnetic ferrite wet-pressing tile-shaped magnet die |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552572A (en) * | 2014-12-25 | 2015-04-29 | 安徽金寨将军磁业有限公司 | Coordination method for working surfaces of upper die and medium die of permanent magnetic ferrite tile die |
| CN106891000A (en) * | 2015-12-21 | 2017-06-27 | 北京中科三环高技术股份有限公司 | Tile-shaped magnet mould, magnet forming method and motor magnet |
| CN109599261A (en) * | 2018-11-23 | 2019-04-09 | 横店集团东磁股份有限公司 | Magnet makes mold |
| CN110919822A (en) * | 2019-12-12 | 2020-03-27 | 湖南航天磁电有限责任公司 | Permanent magnetic ferrite wet process shaping's lower punching die |
| CN114211208A (en) * | 2021-12-27 | 2022-03-22 | 安徽金寨将军磁业有限公司 | Processing method for arc surface of permanent magnetic ferrite magnetic shoe alloy die |
-
2012
- 2012-12-07 CN CN 201220672049 patent/CN202943736U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552572A (en) * | 2014-12-25 | 2015-04-29 | 安徽金寨将军磁业有限公司 | Coordination method for working surfaces of upper die and medium die of permanent magnetic ferrite tile die |
| CN106891000A (en) * | 2015-12-21 | 2017-06-27 | 北京中科三环高技术股份有限公司 | Tile-shaped magnet mould, magnet forming method and motor magnet |
| CN106891000B (en) * | 2015-12-21 | 2018-10-26 | 北京中科三环高技术股份有限公司 | Tile-shaped magnet molding die, magnet forming method and motor magnet |
| CN109599261A (en) * | 2018-11-23 | 2019-04-09 | 横店集团东磁股份有限公司 | Magnet makes mold |
| CN109599261B (en) * | 2018-11-23 | 2020-11-13 | 横店集团东磁股份有限公司 | Magnet manufacturing mold |
| CN110919822A (en) * | 2019-12-12 | 2020-03-27 | 湖南航天磁电有限责任公司 | Permanent magnetic ferrite wet process shaping's lower punching die |
| CN114211208A (en) * | 2021-12-27 | 2022-03-22 | 安徽金寨将军磁业有限公司 | Processing method for arc surface of permanent magnetic ferrite magnetic shoe alloy die |
| CN114211208B (en) * | 2021-12-27 | 2024-02-27 | 安徽金寨将军磁业有限公司 | Method for processing arc surface of permanent ferrite magnetic shoe alloy die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20171207 |