CN202779792U - Forming die with non-magnetic-conductive isolation structure for magnetic material powder - Google Patents
Forming die with non-magnetic-conductive isolation structure for magnetic material powder Download PDFInfo
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- CN202779792U CN202779792U CN 201220509091 CN201220509091U CN202779792U CN 202779792 U CN202779792 U CN 202779792U CN 201220509091 CN201220509091 CN 201220509091 CN 201220509091 U CN201220509091 U CN 201220509091U CN 202779792 U CN202779792 U CN 202779792U
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- isolation structure
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- material powder
- die cavity
- mold
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Abstract
The utility model discloses a forming die with a non-magnetic-conductive isolation structure for magnetic material powder. The forming die comprises a female die and the isolation structure, wherein the female die comprises a front plate, a back plate, a left plate and a right plate which define a die cavity, concave structures matched with the isolation structure are arranged on one sides of the left and right plates inside the die cavity, and the isolation structure is placed in the concave structures and made of non-magnetic-conductive materials. According to the forming die, the non-magnetic-conductive isolation structure is arranged on the inner sides of the left and right plates, therefore the defect that magnetic powder is subjected to an absorption force of the left and right plates during moving in the die cavity is overcome, the problem that a finally produced blank is in a waist-shrinking shape big at two ends and small in the middle caused by the fact that the magnetic powder is absorbed to the left and right sides of the die cavity by the left and right plates is solved, and the quality and performance of blanks produced by the forming die can be improved.
Description
Technical field
The utility model relates to mould manufacturing field, refers in particular to a kind of not mold for molding magnetic material powder of magnetic conduction isolation structure that has.
Background technology
As shown in Figure 1, the mould that uses at present is comprised of former and seaming chuck 5, push-down head 6, and former is comprised of four blocks of side plates all around, and wherein left plate 1, right plate 2 use permeability magnetic materials, are generally Gr12 steel or GGr15 steel; Front side board 3, back side panel 4 are non-magnet_conductible material, are generally 304 stainless steels, without magnetic mould steel, and non-magnesium hard alloy etc., seaming chuck 5, push-down head 6 also are non-magnet_conductible material.
Magnaglo needs to have magnetic field orientating in pressing process, make the direction of magnetization of powder identical with the direction of externally-applied magnetic field.The coil of orientation usefulness is installed on the press, when coil electricity, and press frame, cartridge, forward and backward side plate, die cavity consist of magnetic circuit.
The benefit of existing such mould is: whole magnetic resistance is less, only needs less electric current just can make the magnetic induction intensity in the die cavity reach specification requirement.
But above-mentioned mould has only been considered the intensity in magnetic field, does not consider the movement of magnetic in the die cavity.In fact, if magnetic in a uniform magnetic field, magnetic can remain static or only rotate so, the direction of magnetization that turns to magnetic is with till magnetic direction is consistent; And when Magnetic field inhomogeneity, magnetic then can move towards the high place of magnetic induction intensity.
Clearly, the mould that uses at present, because its left and right side plate has used permeability magnetic material, the distribution situation of its die cavity internal magnetic field is: higher the closer to left side plate place magnetic induction intensity, magnetic induction intensity is minimum in the centre.See intuitively, be exactly after left and right side plate magnetizes in magnetic field, to have produced the attraction to magnetic, magnetic moved at two ends to the left and right when this had just caused orientation, thereby so that compacting blank material out is inhomogeneous, show that finally the blank behind the sintering becomes the little waist contracting shape in large centre, two ends.
In addition, because Distribution of Magnetic Field is inhomogeneous, also cause compacting blank out inconsistent in the differently-oriented directivity at each position, also can affect its performance.
The utility model content
The purpose of this utility model provides a kind of not mold for molding magnetic material powder of magnetic conduction isolation structure that has, and it can overcome the deficiencies in the prior art, makes the blank material that produces by this mould even, functional.
The purpose of this utility model is achieved in that
Has the not mold for molding magnetic material powder of magnetic conduction isolation structure, it includes former and isolation structure, described former includes front side board, back side panel, left plate and right plate, described front side board, described back side panel, described left plate and described right plate are around forming a die cavity, described left plate and described right plate are equipped with the recessed structure that matches with described isolation structure in its side that is positioned at die cavity, described isolation structure is positioned at described recessed structure, and described isolation structure is that non-magnet_conductible material is made.
After described isolation structure was set, described left plate and right plate that can magnetic conduction have had certain distance from magnetic, thereby can weaken left plate and right plate to the attraction of magnetic; When attraction balance that left plate and right plate produce attraction and the magnetic self of magnetic, magnetic just can not move, and at this moment, the magnetic field in the die cavity also can become a uniform magnetic field.
Described isolation structure can be division board, and it includes two division boards.Also can be hollow cylindrical body, two opposite sides of described cylindrical body are positioned at described recessed structure, and two other opposite side is close to the inboard of described front side board, described back side panel respectively.
The thickness of common described isolation structure is 4-30mm.As the optimal way of isolation structure, the thickness of described isolation structure is 7-15mm.
The width of described recessed structure matches with the thickness of described isolation structure.
The length of described recessed structure is greater than the width of described die cavity.
The height of described recessed structure matches with the height of described die cavity.
The utility model compared with prior art has following beneficial effect:
The utility model arranges non-magnetic isolation structure by the inboard at described left plate and described right plate, left plate that magnetic is subject to and the attraction of right plate have been overcome in die cavity, avoid magnetic to be formed the little waist contracting shape in large centre, two ends by the blank that left plate and right plate attract to cause making at last to the left and right both sides of die cavity, improved quality and the performance of the blank of making by this mould.
Description of drawings
Fig. 1 is the structural representation of prior art mold for molding magnetic material powder;
Fig. 2 the utlity model has the not structural representation of the mold for molding magnetic material powder embodiment 1 of magnetic conduction isolation structure;
Fig. 3 the utlity model has the not structural representation of the mold for molding magnetic material powder embodiment 2 of magnetic conduction isolation structure.
Among the figure: 1-left plate, 2-right plate, 3-front side board, 4-back side panel, 5-seaming chuck, 6-push-down head, 11-seaming chuck, 12-push-down head, 13-front side board, 14-back side panel, 15-left plate, 16-right plate, 17-die cavity, the recessed structure of 18-, the recessed structure of 19-, 20-isolation structure.
The specific embodiment
Embodiment 1:
As shown in Figure 2, described in the utility model have a not mold for molding magnetic material powder of magnetic conduction isolation structure, and it includes seaming chuck 11, push-down head 12, former and isolation structure 20.Described former includes front side board 13, back side panel 14, left plate 15 and right plate 16, described front side board 13, described back side panel 14, described left plate 15 and described right plate 16 are around forming a die cavity 17, described seaming chuck 11, described push-down head 12 and described die cavity 17 couplings are pressed in the described die cavity 17 from top, the below of described die cavity 17 respectively.The side that described left plate 15 and described right plate 16 are positioned at die cavity 17 is respectively equipped with recessed structure 18,19, and described isolation structure 20 cooperates with described recessed structure 18,19, and described isolation structure 19 adopts non-magnet_conductible material to make.
Like this, after described isolation structure 20 was set, described left plate 15 and described right plate 16 that can magnetic conduction have had certain distance from magnetic, thereby can weaken the attraction of left plate 15 and 16 pairs of magnetics of right plate; When attraction balance that the attraction of left plate 15 and 16 pairs of magnetics of right plate and magnetic self produce, magnetic just can not move, and at this moment, the magnetic fields in the die cavity 17 also can become a uniform magnetic field.
The thickness of described isolation structure 20 is 4-30mm; When this mould was applied to the sintered NdFeB powder compacting, the thickness of described isolation structure 20 was preferably 7-15mm.The material of described isolation structure 20 can be any one non-magnet_conductible materials such as 304 stainless steels, 306 stainless steels or austenitic stainless steel and makes.
As shown in Figure 2, in the present embodiment, described isolation structure 20 includes two division boards, and two described division boards lay respectively at described recessed structure 18 and described recessed structure 19 places.Described recessed structure 18,19 width match with the thickness of described division board 20, and described recessed structure 18,19 length are greater than the width of described cavity space 20, and the height of described recessed structure 19 matches with the height of described cavity space 17.Described left plate 15, described right plate 16 are kept apart with magnetic in described cavity space 17.
Embodiment 2:
As shown in Figure 3, described isolation structure 20 is hollow cylindrical body, its cross section can be square or rectangular, and two opposite sides of described cylindrical body lay respectively in the described recessed structure 18,19, and two other opposite side is close to the inboard of described front side board 13, described back side panel 14 respectively.Adopt present embodiment, it is as a whole that isolation structure 20 is done, and is convenient to install.When adopting present embodiment, described front side board 13 and described back side panel 14 need adaptive shortening length, namely enlarge the area of described die cavity 17, then described isolation structure 20 are placed in the inwall of described die cavity 17, and be easy for installation.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. has the not mold for molding magnetic material powder of magnetic conduction isolation structure, it includes former, described former includes front side board (13), back side panel (14), left plate (15) and right plate (16), described front side board (13), described back side panel (14), described left plate (15) and described right plate (16) are around forming a die cavity (17), it is characterized in that, it also includes isolation structure (20), described left plate (15) and described right plate (16) are equipped with the recessed structure (18 that matches with described isolation structure (20) in its side that is positioned at die cavity (17), 19), described isolation structure (20) is positioned at described recessed structure (18,19) in, described isolation structure (20) is made for non-magnet_conductible material.
2. according to claim 1 have a not mold for molding magnetic material powder of magnetic conduction isolation structure, it is characterized in that described isolation structure (20) is division board, and it includes two division boards.
3. according to claim 1 have a not mold for molding magnetic material powder of magnetic conduction isolation structure, it is characterized in that, described isolation structure (20) is hollow cylindrical body, two opposite sides of described cylindrical body are positioned at described recessed structure, and two other opposite side is close to the inboard of described front side board, described back side panel respectively.
According to claim 1 to 3 each describedly have a not mold for molding magnetic material powder of magnetic conduction isolation structure, it is characterized in that the thickness of described isolation structure (20) is 4-30mm.
According to claim 1 to 3 each describedly have a not mold for molding magnetic material powder of magnetic conduction isolation structure, it is characterized in that the thickness of described isolation structure (20) is 7-15mm.
6. according to claim 1 have a not mold for molding magnetic material powder of magnetic conduction isolation structure, it is characterized in that the width of described recessed structure (18,19) matches with the thickness of described isolation structure (20).
7. according to claim 6 have a not mold for molding magnetic material powder of magnetic conduction isolation structure, it is characterized in that the length of described recessed structure (18,19) is greater than the width of described die cavity (17).
8. according to claim 7 have a not mold for molding magnetic material powder of magnetic conduction isolation structure, it is characterized in that the height of described recessed structure (18,19) matches with the height of described die cavity (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220509091 CN202779792U (en) | 2012-10-07 | 2012-10-07 | Forming die with non-magnetic-conductive isolation structure for magnetic material powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220509091 CN202779792U (en) | 2012-10-07 | 2012-10-07 | Forming die with non-magnetic-conductive isolation structure for magnetic material powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202779792U true CN202779792U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220509091 Withdrawn - After Issue CN202779792U (en) | 2012-10-07 | 2012-10-07 | Forming die with non-magnetic-conductive isolation structure for magnetic material powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202779792U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847939A (en) * | 2012-10-07 | 2013-01-02 | 江西金力永磁科技有限公司 | Magnetic material powder forming mold with non-magnetic isolating structure |
| CN108039275A (en) * | 2017-12-12 | 2018-05-15 | 江西中磁科技协同创新有限公司 | A kind of molding die of soft magnetic materials |
-
2012
- 2012-10-07 CN CN 201220509091 patent/CN202779792U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847939A (en) * | 2012-10-07 | 2013-01-02 | 江西金力永磁科技有限公司 | Magnetic material powder forming mold with non-magnetic isolating structure |
| CN108039275A (en) * | 2017-12-12 | 2018-05-15 | 江西中磁科技协同创新有限公司 | A kind of molding die of soft magnetic materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20141119 |
|
| RGAV | Abandon patent right to avoid regrant |