CN205058264U - Correct mould that permanent magnetic ferrite tile shape product warp - Google Patents
Correct mould that permanent magnetic ferrite tile shape product warp Download PDFInfo
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- CN205058264U CN205058264U CN201520709871.0U CN201520709871U CN205058264U CN 205058264 U CN205058264 U CN 205058264U CN 201520709871 U CN201520709871 U CN 201520709871U CN 205058264 U CN205058264 U CN 205058264U
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Abstract
The utility model relates to a correct mould that permanent magnetic ferrite tile shape product warp, its characterized in that: comprise mould upper punch, die and mould low punch, the upper punch of mould adopts the magnetic materials preparation, makes the mould low punch by magnetic materials and contains in magnetic materials does not make the mould die, makes the inside and the outside officious announcement oriented magnetic field that produces parallel even oriented magnetic field and take the contained angle respectively of mould die, produces dual mode magnetic field when the product is suppressed: firstly, the magnetic field within the mould die is parallel even oriented magnetic field, secondly, the magnetic field beyond the mould die is officious announcement oriented magnetic field, and the magnetic line of force and the magnetic line of force in even oriented magnetic field within the die in the officious announcement oriented magnetic field beyond the die have the contained angle, and its included angle change scope is from inside to outside: 10-35. The utility model discloses fundamentally has solved permanent magnetic ferrite product deformation's problem, has improved product yield and production efficiency, has reduced manufacturing cost.
Description
Technical field
The utility model relates to a kind of mould correcting permanent-magnet ferrite shoe-shaped product distortion.
Background technology
At present, domestic permanent-magnet ferrite production enterprise, the mould that tradition uses in the prior art adopts the upper punch of permeability magnetic material to be embedded in the combination upper punch of composition mould in non-magnet_conductible material; Make mould low punch and non-magnet_conductible material by permeability magnetic material to make die and form.Permanent-magnet ferrite product produces deformation after high temperature sintering two kinds of reasons: one is alignment magnetic field, and two is pressed densities of product.Because the alignment magnetic field of product in pressing process is equally distributed, therefore the distortion of product is not had an impact; During product compacting, the upper punch of mould moves downward, and when upper punch is close to the upper surface of die, due to the effect that upper punch presses down, upper punch and die is moved downward simultaneously, but now upper punch and die geo-stationary.Although undershoot is static, due to moving downward of die, the relative die of undershoot is made to produce relative motion, so first the bottom opposite upper parts of product is suppressed, within certain press time, the lower press time of product is relatively long, after compacting terminates, the lower press density of product is greater than the density on top, product is after high temperature sintering, and the difference due to pressed density occurs shrinking inconsistent phenomenon, and the portion retracts that pressed density is large is little, the portion retracts that pressed density is little is large, so the arc-shaped bend distortion that two end portions upwarps appears in product.The product of distortion, after the mill processing of surface, cannot be corrected to normal shape, product rejection.If larger production surfacing amount, the product of distortion can be corrected to normal shape, but do like this and there will be two kinds of drawbacks, one is reduce production efficiency, can have influence on all production operations; Two are the increase in production cost.
Summary of the invention
The utility model overcomes the defect of above-mentioned existence, and object is for improving permanent-magnet ferrite shoe-shaped product yield rate and production efficiency, reduction production cost, provides a kind of mould correcting permanent-magnet ferrite shoe-shaped product distortion.
The utility model corrects the mould content Description of permanent-magnet ferrite shoe-shaped product distortion:
The utility model corrects the mould of permanent-magnet ferrite shoe-shaped product distortion, it is characterized in that: be made up of mould upper punch, die and mould low punch, the upper punch of mould adopts permeability magnetic material to make, make mould low punch by permeability magnetic material to be contained in non-magnet_conductible material and to make in female die of die, make the inside of female die of die and the outside Nonuniform orientation magnetic field producing parallel uniform orientation magnetic field respectively and be with angle, produce two kinds of mode magnetic fields when product is suppressed: one be magnetic field within female die of die is parallel uniform orientation magnetic field; Two be magnetic field beyond female die of die is Nonuniform orientation magnetic field, and within the magnetic line of force in the Nonuniform orientation magnetic field beyond die and die, the magnetic line of force of uniform orientation magnetic field has angle, and its variable angle scope is 10 ° ~ 35 ° from inside to outside.
The utility model corrects the mould of permanent-magnet ferrite shoe-shaped product distortion, because mould upper punch 1 adopts permeability magnetic material to make, the magnetic field beyond the die of mould is made to be that Nonuniform orientation magnetic field 6 has angle with the uniform orientation magnetic field in female die of die, in production process, Nonuniform orientation magnetic field produces heterogeneous horizontal and machine-direction oriented to the two end portions of permanent-magnet ferrite product, upper due to product two end portions, the transverse direction of lower surface and machine-direction orientedly to vary in size, product is after high temperature sintering, shrink inconsistent generation and be bent downwardly distortion, this deformation direction is contrary from the direction of the contraction distortion of the different generation of permanent-magnet ferrite product pressed density, flexural deformation phenomenon when correcting permanent-magnet ferrite production.This deformation direction is contrary from the direction of the contraction distortion of the different generation of permanent-magnet ferrite product pressed density, fundamentally solves the problem of permanent-magnet ferrite Product processing distortion, improves finished product rate and production efficiency, reduce production cost.
Accompanying drawing explanation
Fig. 1 is the mould structure schematic diagram correcting permanent-magnet ferrite shoe-shaped product distortion;
In figure: 1 be mould upper punch, 2 are dies, 3 are mould low punches, 4 are permanent-magnet ferrite products, 5 to be pressed are parallel uniform orientation magnetic fields, 6 is the Nonuniform orientation magnetic field increased beyond female die of die.
Detailed description of the invention
The utility model is the mould correcting permanent-magnet ferrite shoe-shaped product distortion, is realized, illustrate below in conjunction with accompanying drawing by the alignment magnetic field changed in the compressing process of product.See Fig. 1, the utility model corrects the mould of permanent-magnet ferrite shoe-shaped product distortion, be made up of mould upper punch 1, die 2 and mould low punch 3, the upper punch 1 of mould adopts permeability magnetic material to make, make mould low punch 3 by permeability magnetic material to be contained in non-magnet_conductible material and to make in female die of die 2, make the inside of female die of die and the outside Nonuniform orientation magnetic field producing parallel uniform orientation magnetic field respectively and be with angle, produce two kinds of mode magnetic fields when permanent-magnet ferrite shoe-shaped product is suppressed: one be magnetic field within female die of die is parallel uniform orientation magnetic field 5; Two be magnetic field beyond female die of die is Nonuniform orientation magnetic field 6, and within the magnetic line of force in the Nonuniform orientation magnetic field 6 beyond die and die, the magnetic line of force of uniform orientation magnetic field 5 has angle, and its variable angle scope is 10 ° ~ 35 ° from inside to outside.
Mould upper punch 1 adopts permeability magnetic material to make, the magnetic field beyond the die of mould is made to be that Nonuniform orientation magnetic field 6 has angle with the uniform orientation magnetic field in female die of die, in production process, Nonuniform orientation magnetic field produces heterogeneous horizontal and machine-direction oriented to the two end portions of permanent-magnet ferrite product, upper due to product two end portions, the transverse direction of lower surface and machine-direction orientedly to vary in size, product is after high temperature sintering, shrink inconsistent generation and be bent downwardly distortion, this deformation direction is contrary from the direction of the contraction distortion of the different generation of permanent-magnet ferrite product pressed density, flexural deformation phenomenon when correcting permanent-magnet ferrite production.
The utility model mould upper punch adopts permeability magnetic material to make, change the magnetic field orientating mode of permanent-magnet ferrite product in pressing process, make to produce Nonuniform orientation magnetic field beyond female die of die 2, the magnetic line of force of the uniform orientation magnetic field within the magnetic line of force in this Nonuniform orientation magnetic field and die 2 has angle, its variable angle scope is 10 ° ~ 35 ° from inside to outside, because the magnetic line of force of Nonuniform orientation magnetic field and uniform orientation magnetic field has angle, Nonuniform orientation magnetic field is horizontal and longitudinally all important.Therefore, Nonuniform orientation magnetic field can produce heterogeneous horizontal and machine-direction oriented to the two end portions of product 4, the permanent-magnet ferrite product 4 suppressed under this state is after high temperature sintering, horizontal and machine-direction oriented contraction heterogeneous can be produced in its two end portions, no matter which kind of oriented shrink, the final result produced is consistent.Concrete principle is as follows: because the upper surface of product is near the upper punch of mould, the magnetic line of force in Nonuniform orientation magnetic field arrives the upper surface minimum number of product, so the Nonuniform orientation magnetic field at place is minimum; And the upper punch of the lower surface distance mould of product farthest, the magnetic line of force in Nonuniform orientation magnetic field arrives the lower surface quantity of product at most, and Nonuniform orientation magnetic field is herein maximum; Namely from top to bottom, the Nonuniform orientation magnetic field of product becomes large gradually by little.The upper surface of product due to Nonuniform orientation magnetic field little, therefore it prolongs transverse direction and longitudinal direction shrinks also little, the lower surface of product due to Nonuniform orientation magnetic field large, therefore it prolongs transverse direction and longitudinal direction shrinks also large.Therefore, under the effect in Nonuniform orientation magnetic field, the Nonuniform orientation shrinking transverse direction and the longitudinal direction being greater than upper surface due to the transverse direction of product lower surface and the Nonuniform orientation of longitudinal direction shrinks, the missionary society of this Nonuniform orientation contraction makes the two end portions of product be bent downwardly distortion, the direction of this distortion just in time from product because the contraction distortion direction of the different generation of pressed density is contrary, these two kinds of distortion are cancelled out each other, correct for the flexural deformation phenomenon that product produces because pressed density is different, make up-to-standard permanent-magnet ferrite product.The present invention fundamentally solves the problem of permanent-magnet ferrite Product processing distortion, improves production efficiency, reduces production cost.
Claims (1)
1. correct the mould of permanent-magnet ferrite shoe-shaped product distortion for one kind, it is characterized in that: be by mould upper punch (1), die (2) and mould low punch (3) are formed, the upper punch (1) of mould adopts permeability magnetic material to make, make mould low punch (3) by permeability magnetic material to be contained in non-magnet_conductible material and to make in female die of die (2), the inside of female die of die is made to produce parallel uniform orientation magnetic field respectively with outside and be with the Nonuniform orientation magnetic field of angle, two kinds of mode magnetic fields are produced: one be magnetic field within female die of die is parallel uniform orientation magnetic field (5) when permanent-magnet ferrite shoe-shaped product is suppressed, two be magnetic field beyond female die of die is Nonuniform orientation magnetic field (6), and within the magnetic line of force in the Nonuniform orientation magnetic field (6) beyond die and die, the magnetic line of force of uniform orientation magnetic field (5) has angle, and its variable angle scope is 10 ° ~ 35 ° from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709871.0U CN205058264U (en) | 2015-09-15 | 2015-09-15 | Correct mould that permanent magnetic ferrite tile shape product warp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709871.0U CN205058264U (en) | 2015-09-15 | 2015-09-15 | Correct mould that permanent magnetic ferrite tile shape product warp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205058264U true CN205058264U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520709871.0U Expired - Fee Related CN205058264U (en) | 2015-09-15 | 2015-09-15 | Correct mould that permanent magnetic ferrite tile shape product warp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205058264U (en) |
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2015
- 2015-09-15 CN CN201520709871.0U patent/CN205058264U/en not_active Expired - Fee Related
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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: 20160302 Termination date: 20180915 |