CN209920434U - Injection mold for preparing multi-orientation anisotropic plastic magnet - Google Patents
Injection mold for preparing multi-orientation anisotropic plastic magnet Download PDFInfo
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- CN209920434U CN209920434U CN201822119114.4U CN201822119114U CN209920434U CN 209920434 U CN209920434 U CN 209920434U CN 201822119114 U CN201822119114 U CN 201822119114U CN 209920434 U CN209920434 U CN 209920434U
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Abstract
The utility model belongs to the technical field of magnetic material. The utility model discloses an injection mold for preparing multi-orientation anisotropic plastic magnet, which consists of a front mold, a rear mold, an outer diameter orientation magnetizing part and an inner diameter orientation magnetizing part; a die cavity is formed between the inner diameter orientation magnetizing part and the outer diameter orientation magnetizing part, an outer interlayer is arranged between the die cavity and the outer diameter orientation magnetizing part, and an inner interlayer is arranged between the die cavity and the inner diameter orientation magnetizing part. The injection mold in the utility model can meet the preparation requirement of the multi-orientation anisotropic magnet, realize the multi-orientation application of the magnet, and is beneficial to improving the application efficiency of the magnet; the method can realize the rapid and stable preparation of the multi-orientation anisotropic magnet, is beneficial to large-scale production, and can reduce the production cost.
Description
Technical Field
The utility model belongs to the technical field of the magnetic material technique and specifically relates to an injection mold for preparing multi-orientation anisotropy plastic magnet is related to.
Background
With the development of science, the application of magnets is more and more extensive, and people also put forth different requirements on the application efficiency of magnets, for example, for magnetic rings or magnetic shoes, people no longer want the magnetic rings or magnetic shoes to have higher magnetic performance only in one orientation, but want the magnetic rings or magnetic shoes to have higher magnetic performance in at least two orientations, for example, the magnetic rings or magnetic shoes have higher magnetic performance in both the inner diameter orientation and the outer diameter orientation, that is, multi-orientation anisotropic magnetic rings or multi-orientation anisotropic magnetic shoes, so as to improve the application efficiency of magnets.
However, in the conventional magnet, especially for the magnetic ring or the magnetic shoe, it is usually only possible to achieve a higher magnetic performance in a certain orientation, but the magnetic performance in other orientations is worse, that is, the conventional magnetic ring or the magnetic shoe can only achieve a single-orientation anisotropy, so that the application of the magnetic ring or the magnetic shoe can only be limited to the application in a certain orientation, which is not favorable for improving the application efficiency of the magnet.
SUMMERY OF THE UTILITY MODEL
For the magnetic ring or the magnetic shoe orientation that exist among the above-mentioned prior art of solution single, can't satisfy the problem of current application, the utility model provides a can be used for preparing the injection mold of magnetic is moulded to multi-orientation anisotropy.
In order to achieve the above object, the utility model adopts the following technical scheme:
an injection mold for preparing multi-orientation anisotropic plastic magnet comprises a front mold, a rear mold, an outer diameter orientation magnetizing part and an inner diameter orientation magnetizing part; a die cavity is formed between the inner diameter orientation magnetizing part and the outer diameter orientation magnetizing part, an outer interlayer is arranged between the die cavity and the outer diameter orientation magnetizing part, and an inner interlayer is arranged between the die cavity and the inner diameter orientation magnetizing part; the inner diameter orientation magnetizing part is arranged on an inner supporting seat through a fastener and a screw, and the inner supporting seat is fixed on the rear die; the outer diameter orientation magnetizing part is arranged on the outer supporting seat, and the outer supporting seat is arranged on the rear mold; the front die is provided with a feed inlet corresponding to the die cavity.
The injection mold comprises a front mold, a rear mold, an outer diameter orientation magnetizing field and an inner diameter orientation magnetizing field, wherein a mold cavity is formed between the inner diameter orientation magnetizing field and the outer diameter orientation magnetizing field. The size of the magnetic field generated by the inner diameter orientation magnetizing magnetic field and the outer diameter orientation magnetizing magnetic field can be determined according to the application requirement of the plastic magnet to be prepared, and then the material of the inner diameter orientation magnetizing magnetic field and the material of the outer diameter orientation magnetizing magnetic field are determined; for example, an inside diameter oriented magnetizing field may be an SM-32 samarium cobalt magnet (low high temperature demagnetization) and an outside diameter oriented magnetizing field may be an EH42 neodymium iron boron magnet. The orientation magnetizing magnetic field can be determined by two methods, one is that the inner diameter and the outer diameter are in the same polarity at the radial position, for example, the inner diameter is an N pole at a certain position, and the outer diameter is an N pole at the corresponding position, and the relationship causes the inner orientation and the outer orientation to be magnetized by the repulsion of the same poles; the other is that the inner diameter and the outer diameter are opposite polarity at the radial corresponding position, for example, the inner diameter is N pole at a certain position, and the outer diameter is S pole at the corresponding position, so that the inner diameter and the outer diameter are magnetized in an oriented mode through attraction.
The inner partition layer and the outer partition layer are arranged to reduce the isolation effect on the magnetic fields generated by the inner diameter magnetizing part and the outer diameter magnetizing part respectively, and meanwhile, the inner partition layer and the outer partition layer can avoid the damage of the inner diameter magnetizing part and the outer diameter magnetizing part caused by frequent contact of the inner diameter magnetizing part and the outer diameter magnetizing part with plastic magnetism, so that the service life of the injection mold can be prolonged.
The inner supporting seat of the inner-diameter orientation magnetizing magnetic field is fixed on the rear die, the rear die is fixed around the lower end (integrally processed and manufactured) of the outer-orientation magnetizing magnetic field supporting seat, and the design ensures the middle position precision and the size precision of the product through the die processing precision. The outer diameter orientation magnetizing magnetic field is provided with an outer supporting seat, and the inner and outer dimension and position precision of the product can be ensured by the processing precision of the die because the inner and outer orientation magnetizing magnetic fields are fixed (or transmitted and fixed) on the outer supporting seat.
Preferably, the magnetic field intensity of the mold cavity along one half of the radial direction of the mold cavity is 800-1500 GS.
When the magnetic force of the half part of the die cavity in the injection die along the radial direction is (N or S) 800-1500GS, the mutual interference between the internal and external orientation magnetizing magnetic fields is the least. Wherein the determination can be made using a gauss meter or by computer simulation.
Preferably, an adjusting layer is further arranged between the outer diameter orientation magnetizing part and the die cavity, and the adjusting layer is arranged between the outer diameter orientation magnetizing part and the outer partition layer.
The adjusting layer is positioned between the outer diameter orientation magnetizing magnetic field and the outer partition layer, the arrangement of the adjusting layer can adjust the magnetic field distribution of the outer diameter orientation magnetizing magnetic field in the die cavity, and particularly, the magnetic force of the die cavity in the radial half position of the die cavity can be kept at 800-1500 GS.
Preferably, a magnet mounting frame is further arranged in the die cavity; the magnet mounting rack is embedded in the rear mold and is higher than the plane of the rear mold.
Preferably, the rear die is further provided with an inner positioning step and an outer positioning step in the axial direction, and the inner supporting seat is further provided with an anti-rotation positioning structure matched with the inner positioning step.
Be equipped with axial interior location step and outer location step on the back mould in order to guarantee axial fixed, still set up on the inner bearing seat in addition and the supporting anti-rotation location structure of interior location step, the same when the mould uses outside structure (the utility model discloses do not relate to) in set up corresponding and the supporting anti-rotation location structure of outer location step to guarantee the outer structure axial fixity of inner bearing seat, back mould and fixed mould.
Preferably, the thickness of the inner interlayer and the outer interlayer in the radial direction is 0.5-1 mm, and the relative permeability of the inner interlayer and the outer interlayer is not more than 1.
Preferably, the inner interlayer and the outer interlayer are made of wear-resistant non-magnetic steel.
Still need supporting corresponding injection molding system when above-mentioned mould in actual use, and this injection molding system is not the utility model discloses the key point, the utility model discloses also do not relate to corresponding technical scheme, ordinary skilled person in the art can be according to the corresponding selection of its conventional technical common general knowledge of mastering/set up specific injection molding system.
Preferably, the injection mold for preparing the multi-orientation anisotropic plastic magnet is used for preparing an injection annular magnet or an injection magnetic shoe which is anisotropic in the inner diameter direction and the outer diameter direction.
Therefore, the utility model discloses following beneficial effect has:
(1) the injection mold in the utility model can meet the preparation requirement of the multi-orientation anisotropic magnet, realize the multi-orientation application of the magnet, and is beneficial to improving the application efficiency of the magnet;
(2) the utility model provides an injection mold can realize quick, the stable preparation of multi-orientation anisotropic magnet, does benefit to large-scale production, can reduction in production cost.
Drawings
FIG. 1 is a schematic view of an injection mold for producing multi-orientation anisotropic plastic magnets according to the present invention;
FIG. 2 is an exploded view of the injection mold for producing multi-orientation anisotropic plastic magnets of the present invention;
FIG. 3 is a schematic view of the magnetic field and the attached components of the present invention;
FIG. 4 is a schematic top view of the magnetic field and its associated components for medium inner diameter orientation magnetization of the present invention;
FIG. 5 is a schematic view of the magnetization field and its attached components in the middle and outer diameter orientation of the present invention;
fig. 6 is a schematic top view of the middle id orientation magnetizing field, its accessories and the rear mold according to the present invention.
In the figure: the device comprises a front die 1, a feed inlet 11, a rear die 2, an inner positioning step 21, an outer positioning step 22, an outer diameter orientation magnetizing part 3, an inner diameter orientation magnetizing part 4, a die cavity 5, an outer isolation layer 51, an inner isolation layer 52, an adjusting layer 53, a magnet mounting frame 54, an inner supporting seat 6, a fastening piece 61, a screw 62, an anti-rotation positioning structure 63 and an outer supporting seat 7.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the present invention, all the devices and materials are commercially available or commonly used in the art, and the methods in the following examples are conventional in the art unless otherwise specified.
Example 1
An injection mold for preparing multi-orientation anisotropic plastic magnet comprises a front mold 1, a rear mold 2, an outer diameter orientation magnetizing part 3 and an inner diameter orientation magnetizing part 4; the inner diameter orientation magnetizing part is made of a samarium cobalt magnetic material with the mark of SM-32, and the outer diameter orientation magnetizing part is made of an EH42 neodymium iron boron magnetic material; a die cavity 5 is formed between the inner diameter orientation magnetizing part and the outer diameter orientation magnetizing part, and the magnetic field intensity of the die cavity along one half of the radial direction of the die cavity is 1100 GS; an outer interlayer 51 is arranged between the die cavity and the outer diameter orientation magnetizing part, an inner interlayer 52 is arranged between the die cavity and the inner diameter orientation magnetizing part, the radial thickness of the inner interlayer and the outer interlayer is 0.7mm, and the inner interlayer and the outer interlayer are made of wear-resistant non-magnetic steel; an adjusting layer 53 is also arranged between the outer diameter orientation magnetizing part and the die cavity, and the adjusting layer is arranged between the outer diameter orientation magnetizing part and the outer interlayer; the inner diameter orientation magnetizing part is arranged on an inner supporting seat 6 through a fastener 61 and a screw 62, and the inner supporting seat is fixed on a rear mould; the external diameter orientation magnetizing part is arranged on an external supporting seat 7, and the external supporting seat is arranged on a rear die; the front mould is provided with a feeding hole 11 corresponding to the mould cavity, the mould cavity is also internally provided with a magnet mounting rack 54, the magnet mounting rack is embedded in the rear mould and is higher than the plane of the rear mould, the rear mould is also provided with an inner positioning step 21 and an outer positioning step 22 which are axial, and the inner supporting seat is also provided with an anti-rotation positioning structure 63 matched with the inner positioning step.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (6)
1. An injection mold for preparing multi-orientation anisotropic plastic magnet is characterized in that:
the device consists of a front die, a rear die, an outer diameter orientation magnetizing part and an inner diameter orientation magnetizing part;
a die cavity is formed between the inner diameter orientation magnetizing part and the outer diameter orientation magnetizing part, an outer interlayer is arranged between the die cavity and the outer diameter orientation magnetizing part, and an inner interlayer is arranged between the die cavity and the inner diameter orientation magnetizing part;
the inner diameter orientation magnetizing part is arranged on an inner supporting seat through a fastener and a screw, and the inner supporting seat is fixed on the rear die;
the outer diameter orientation magnetizing part is arranged on the outer supporting seat, and the outer supporting seat is arranged on the rear die;
the front die is provided with a feeding hole corresponding to the die cavity.
2. An injection mold for preparing multi-orientation anisotropic plastic magnet according to claim 1, wherein:
an adjusting layer is further arranged between the outer diameter orientation magnetizing part and the die cavity, and the adjusting layer is arranged between the outer diameter orientation magnetizing part and the outer interlayer.
3. An injection mold for preparing multi-orientation anisotropic plastic magnet according to claim 1, wherein:
a magnet mounting rack is also arranged in the die cavity; the magnet mounting rack is embedded in the rear mold and is higher than the plane of the rear mold.
4. An injection mold for preparing multi-orientation anisotropic plastic magnet according to claim 1, wherein:
the rear mould is also provided with an axial inner positioning step and an axial outer positioning step, and the inner supporting seat is also provided with an anti-rotation positioning structure matched with the inner positioning step.
5. An injection mold for preparing multi-orientation anisotropic plastic magnet according to claim 1, wherein:
the magnetic field intensity of the mold cavity along one half of the radial direction of the mold cavity is 800-1500 GS.
6. An injection mold for preparing multi-orientation anisotropic plastic magnet according to claim 1, wherein:
the thickness of the inner interlayer and the outer interlayer in the radial direction is 0.5-1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822119114.4U CN209920434U (en) | 2018-12-17 | 2018-12-17 | Injection mold for preparing multi-orientation anisotropic plastic magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822119114.4U CN209920434U (en) | 2018-12-17 | 2018-12-17 | Injection mold for preparing multi-orientation anisotropic plastic magnet |
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| CN209920434U true CN209920434U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822119114.4U Active CN209920434U (en) | 2018-12-17 | 2018-12-17 | Injection mold for preparing multi-orientation anisotropic plastic magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551714A (en) * | 2018-12-17 | 2019-04-02 | 横店集团东磁股份有限公司 | A kind of injection mold and injection moulding process being used to prepare more oriented anisotropic modeling magnetic |
-
2018
- 2018-12-17 CN CN201822119114.4U patent/CN209920434U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551714A (en) * | 2018-12-17 | 2019-04-02 | 横店集团东磁股份有限公司 | A kind of injection mold and injection moulding process being used to prepare more oriented anisotropic modeling magnetic |
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