CN201064922Y - Orientation press forming device for rare earth permanent magnet - Google Patents
Orientation press forming device for rare earth permanent magnet Download PDFInfo
- Publication number
- CN201064922Y CN201064922Y CNU2007201549651U CN200720154965U CN201064922Y CN 201064922 Y CN201064922 Y CN 201064922Y CN U2007201549651 U CNU2007201549651 U CN U2007201549651U CN 200720154965 U CN200720154965 U CN 200720154965U CN 201064922 Y CN201064922 Y CN 201064922Y
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- earth permanent
- permanent magnet
- shifting board
- magazine
- rare
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Abstract
Disclosed is a device for automatically orientating and press forming an annular and tile shape rare earth permanent magnet. A servo motor of the device is controlled by programs, the servo motor can accurately change the positions of an upper press head and a female die by a transmission device, and the change of relative positions can realize the charging, orientating, press forming, demagnetization and demoulding purposes; and a guide pillar adopts the design that the concentricity of the upper press head and the female die during moving can be ensured. The utility model adopts the measure that the dimensional accuracy and consistency of the rare earth permanent magnet can be ensured. An upper core column adopts the design to avoid the pollution caused by scattered magnetic powder at the outside of a gland box; and the cover plate of the gland box and the carriage of the gland box have the design that the influence on the performance of the rare earth permanent magnet by the oxidation of magnetic powder can be avoided. The device can change the mold and the gland box conveniently so as to meet the requirements on press forming of rare earth permanent magnets with different specifications.
Description
Technical field
The utility model is the orientation compression molding device about rare-earth permanent magnet, particularly is used for the feeding device of compression moulding.
Background technology
Rare-earth permanent magnet is divided into sintered rare-earth permanent magnetic body and binding rare earth permanent magnet, and sintered rare-earth permanent magnetic body greatly part is an anisotropy magnet.With the rare earth permanent magnet alloy powder end of loose condition (of surface) (hereinafter to be referred as " magnetic; average grain diameter: number μ m) place in the press die cavity; make it add magnetize magnetic field and pressure effect compacted under (compacting back volume is 35% ~ 50% of the compacting front volume); the compression moulding of magnetic orientation is after the oversintering program becomes the sintered rare-earth permanent magnetic body, and for example the maximum magnetic energy product of Sintered NdFeB magnet is 280～400KJM
-3(35～50MGOe).Finish from beginning to be pressed into compacting, magnetic need be in the continuous magnetic field (magnetic field of magnetizing) that is not less than 1194KA/m (150000e) all the time, the sufficiently high magnetic field of magnetizing can guarantee that magnetic can be according to the direction magnetization and the marshalling in the magnetic field of magnetizing when its density is low, and the continuous magnetic field of magnetizing becomes in the process of product the direction of magnetization of magnetic gradually and remains unchanged in its effect of being stressed.The magnetic field of magnetizing makes the sintered rare-earth permanent magnetic chaeta base of compression moulding can have part remanent magnetism, cause its surface to attract magnetic easily, influence product quality, therefore need apply the remanent magnetism that 1 counter magnetic field (demagnetized field) opposite with the magnetic direction that magnetizes reduces blank to sintered rare-earth permanent magnetic chaeta base, make it no longer to attract magnetic, the size of demagnetized field need be according to the magnetic property of different magnetics and can be regulated.
Binding rare earth permanent magnet is that the mixture with magnetic and bonding agent places in the die cavity, makes its moulding under pressure, does not need again through the oversintering program.If magnetic is not subjected to adding the orientation effect in the magnetic field of magnetizing in the compression moulding process, become the isotropism binding rare earth permanent magnet after the compression moulding, magnetic property is lower, and for example the maximum magnetic energy product of isotropism Agglutinate neodymium-iron-boron magnet is 48～64KJM
-3(6～8MGOe).If magnetic is subjected to adding the orientation effect in magnetic field of magnetizing in the compression moulding process, be the anisotropic rare earth permanent magnet body after the compression moulding, its compression moulding process is with the compression moulding process of above-mentioned sintered rare-earth permanent magnetic body.The maximum magnetic energy product of anisotropic rare earth permanent magnet body is the several times of the isotropism binding rare earth permanent magnet made of same material, and for example the maximum magnetic energy product of anisotropic bond neodymium iron boron magnetic body can reach 200KJM
-3(25MGOe).
Pressing direction is vertical with the magnetic direction that magnetizes, in the rare-earth permanent magnet direction of magnetization of magnetic radially, the rare-earth permanent magnet of compression moulding is called radially oriented magnetic ring.Pressing direction is parallel with the magnetic direction that magnetizes, and the direction of magnetization of magnetic is parallel to each other in the rare-earth permanent magnet, and the rare-earth permanent magnet of compression moulding is called parallel-oriented magnet.Pressing direction is vertical with the magnetic direction that magnetizes, and the direction of magnetization of magnetic is parallel to each other in the rare-earth permanent magnet, and the rare-earth permanent magnet of compression moulding is called vertical orientated magnet.
The most of mechanical press that adopts of prior art compression moulding isotropism binding rare earth permanent magnet.Seaming chuck moves with the former shift position determines that by cam cam need be changed in the shift position that changes seaming chuck and former, and is very inconvenient, and needs higher cost, and this kind press is not suitable for being used to be orientated compression moulding anisotropic rare earth permanent magnet body.Because need alignment magnetic field during the compression moulding of anisotropic rare earth permanent magnet body, be subjected to the restriction of alignment magnetic field height, highly bigger permanent magnet need just can be finished through reinforced and orientation compression moulding repeatedly, need seaming chuck and former that a plurality of shift positions are arranged thus, the cam of prior art is difficult to meet this requirement.
Usually adopt gravitational method reinforced during compression moulding isotropism binding rare earth permanent magnet, this method is not suitable for being used to be orientated compression moulding anisotropic rare earth permanent magnet body.Owing to increased alignment magnetic field, under the effect of alignment magnetic field, magnetic stops up die cavity easily, and the magnetic that relies on gravity to enter die cavity is hindered when moving, and causes reinforced difficulty.Prior art compression moulding anisotropy sintered rare-earth permanent magnetic body major part adopts artificial weighing and reinforced, and 1 press needs 2 people, 1 people's weighing, and 1 people feeds in raw material and takes finished product away.For fear of the magnetic oxidation, the weighing process is carried out under nitrogen protection, perhaps weighing and press former top all is under the nitrogen protection, strengthens equipment volume and nitrogen consumption.The product major part of compression moulding is square or long cylinder magnet, and processing method after overground, machine cuts, Wire EDM etc. again is processed into the product of suitable user's needs such as thin discs, elongate strip, annulus, watt shape.Material wastage rate is higher, back processing power consumption and manually also more.
A direct reinforced difficult problem that runs into during the anisotropy sintered rare-earth permanent magnetic body of orientation compression moulding annular and watt shape, a reinforced difficult problem that is run into orientation compression moulding anisotropic rare earth permanent magnet body is identical.Because the effect of alignment magnetic field, mould and magnetic are magnetized easily, and the magnetic that relies on gravity to enter die cavity is hindered when moving, and cause reinforced difficulty.
The inventor proposes with seaming chuck magnetic to be pressed into die cavity in application number 200610168009.9 applications for a patent for invention, to overcome the reinforced difficulty that alignment magnetic field causes.This patent is to be the rare earth permanent magnet oriontation compression molding device of realizing that said method designs, and the General layout Plan of equipment and the charging mechanism of realization auto feed are provided.
The utility model content
The purpose of this utility model is the equipment that design 1 cover can be orientated compression moulding annular and watt shape rare-earth permanent magnet automatically.This equipment can be realized auto feed, finish orientation compression moulding, demagnetization and automatic demoulding automatically by control program, and can be easily more mold exchange and magazine.
As shown in Figure 1, orientation compression molding device main body comprises: guide pillar 8, and upper mounted plate 1, middle fixed head 5 and bottom plate 7 are fixing with guide pillar 8, and the quantity of guide pillar is more than or equal to 2; Upper shifting board 2, mold plate 3, bed die plate 4 and lower shifting board 6 concentricity when mobile relies on guide pillar 8 to guarantee; Guide rail 9, magazine 10, feed bin 11 are installed on mold plate 3, and magazine planker 24 is fixed in magazine 10, and magazine cover plate 25 is fixed in feed bin 11, and the shift position of magazine 10 is determined by control program; Seaming chuck 16B is installed on upper shifting board 2, during orientation compression moulding annular rare-earth permanent magnet, last stem stem 16A is installed on upper shifting board 2, and upper shifting board transmission device 17 is installed on upper mounted plate 1, and servomotor 18 can change the shift position and the translational speed of upper shifting board 2 according to control program; Push-down head 15 is installed on middle fixed head 5; During orientation compression moulding annular rare-earth permanent magnet, following stem stem 13 is installed on lower shifting board 6, and the upper surface of its upper surface and mold plate 3 is in same horizontal plane; Former 14 is installed between mold plate 3 and the bed die plate 4, and its upper surface and mold plate 3 upper surfaces are in same horizontal plane, and lower surface and bed die plate 4 lower surfaces are in same horizontal plane; Fixed leg 12 is installed between lower shifting board 6 and the bed die plate 4, guarantees that the relative position between lower shifting board 6 and the bed die plate 4 is constant all the time, and then guarantees that stem stem 13 is constant all the time with the relative position of mold plate 3 down; Lower shifting board transmission device 19 is installed on bottom plate 7, and servomotor 20 can change the shift position and the translational speed of lower shifting board 6 according to control program.Distribution of Magnetic Field is represented with M.As shown in Figure 9, push rod 23 is installed on mold plate 3, can be pushed into the finished product district according to the rare-earth permanent magnet 22 that control program will be orientated compression moulding automatically.
Upper shifting board 2 is upwards moved to peak, can dismantle stem stem 16A and seaming chuck 16B; To being displaced downwardly to minimum point, can will descend stem stem 13 lower shifting board 6 from taking out between upper shifting board 2 and the mold plate 3; Lower shifting board 6 is upwards moved to peak, can dismantle push-down head 15; Mold plate 3 is moved up, and bed die plate 4 moves down, and can dismantle former 14.
By the former 14 of changing different size and the following stem stem 13 that matches with it, push-down head 15, last stem stem 16A, seaming chuck 16B and magazine 10, can produce the rare-earth permanent magnet 22 of different size.
During orientation compression moulding annular rare-earth permanent magnet, in the reinforced process, magnetic 21 enters in the former 14 under the effect of seaming chuck 16B; Afterwards, magazine 10 is got back to the below of feed bin 11 from the top of former 14, if the interior magnetic 21 of seaming chuck 16B cavity this moment falls down, will pollute, and magnetic 21 also might be blocked in the cavity of seaming chuck 16B, stops seaming chuck 16B to enter former 14 once more.In order to solve an above-mentioned difficult problem, need in seaming chuck 16B cavity, install stem stem 16A, last stem stem 16A is the real core cylinder that external diameter equals seaming chuck 16B internal diameter.When magnetic 21 entered in the former 14 under the effect of seaming chuck 16B, last stem stem 16A lower surface was higher than magazine 10 upper surfaces all the time, avoided influencing the density of magnetic 21 in the magazine 10.After magnetic 21 was pressed into former 14, when the lower surface of seaming chuck 16B moved up with respect to magazine 10, the lower surface of last stem stem 16A moved down with respect to seaming chuck 16B, and stem stem 16A is pushed into the magnetic 21 in the seaming chuck 16B cavity in the magazine 10 on this moment; Treat that the lower surface of seaming chuck 16B is higher than the upper surface of magazine 10, and the lower surface of going up the lower surface of stem stem 16A and seaming chuck 16B is when same horizontal plane, last stem stem 16A and seaming chuck 16B return jointly.This kind working method can avoid magnetic 21 to be scattered in outside the magazine 10, pollutes.In the orientation pressing process, last stem stem 16A is subjected to the barrier effect of former 14, stops to move; Seaming chuck 16B moves down separately, is rare-earth permanent magnet 22 with magnetic 21 compression mouldings.
Description of drawings
Fig. 1 is orientated the agent structure schematic diagram of compression molding device
The local enlarged diagram of SBR before Fig. 2 suppresses
Fig. 3 (a) seaming chuck is pressed into magnetic the position view of former process
Fig. 3 (b) seaming chuck is pressed into magnetic the local enlarged diagram A-A of former process
The local enlarged diagram of seaming chuck return course after Fig. 4 feeds in raw material and finishes
The local enlarged diagram of Fig. 5 orientation process
The local enlarged diagram of Fig. 6 compression moulding process
The demagnetize local enlarged diagram of process of Fig. 7
The local enlarged diagram of Fig. 8 knockout course
Fig. 9 is pushed into magnet the local enlarged diagram of finished product district process
The specific embodiment
Example 1: the specific implementation process that is orientated the radially oriented annular rare-earth permanent magnet of compression moulding automatically:
A, preparation: as shown in Figure 2, last stem stem 16A and seaming chuck 16B move to the preceding ready position of compacting jointly, and the lower surface of last stem stem 16A is higher than the lower surface of seaming chuck 16B, and its distance is greater than the height of magazine 10; Former 14 moves to the preceding ready position of compacting.
B, reinforced: shown in Fig. 3 (a), magazine 10 is moved by 11 times direction former 14 tops of feed bin, when magazine 10 internal diameters are aimed at former 14, and magazine 10 stop motions; Last stem stem 16A and seaming chuck 16B move down with respect to former 14; Shown in Fig. 3 (b), when the upper surface of the lower surface of last stem stem 16A and feed bin 10 during in same horizontal plane, seaming chuck 16B is pressed into magnetic 21 in the former 14.
C, reinforced finishing: as shown in Figure 4, last stem stem 16A and seaming chuck 16B move up with respect to former 14; During in same horizontal plane, seaming chuck 16B stops to move in the upper surface of the lower surface of seaming chuck 16B and feed bin 10, and last stem stem 16A moves down, with in the seaming chuck 16B inner chamber with magnetic 21 push back in the feed bin 10; When the upper surface of the lower surface of last stem stem 16A and feed bin 10 during in same horizontal plane, last stem stem 16A and seaming chuck 16B move up with respect to former, turn back to ready position before the compacting respectively; Magazine 10 returns feed bin 11 belows.
D, orientation: as shown in Figure 5, at first, seaming chuck 16B moves down, until seaming chuck 16B lower surface and former 14 upper surfaces in same horizontal plane; Then, former 14 moves up, and magnetic 21 is placed magnetize in the working gas gap of magnetic field.
E, compression moulding: as shown in Figure 6, seaming chuck 16B moves down, and simultaneously former 14 moves down, until being rare earth rare-earth permanent magnet 22 forever with magnetic 21 compression mouldings.In this process, the translational speed of seaming chuck 16B is 2 times of former 14 translational speeds, and rare-earth permanent magnet 22 is in the magnetic field of magnetizing all the time.
F, demagnetization: as shown in Figure 7, former 14 moves down, and rare-earth permanent magnet 22 is by the demagnetized field working gas gap, and rare-earth permanent magnet 22 is demagnetized.
G, the demoulding: as shown in Figure 8, former 14 continues to move down, until rare-earth permanent magnet 22 lower surfaces and former 14 upper surfaces in same horizontal plane, former 14 stop motions.
H, rare-earth permanent magnet is pushed into the finished product district: as shown in Figure 9, last stem stem 16A and seaming chuck 16B return back up to ready position before the compacting, and push rod 23 is pushed into the finished product district with the repressed rare-earth permanent magnet of finishing 22.Fig. 9 is the right view of Fig. 1.
[reference numeral explanation]
1 ... upper mounted plate
2 ... upper shifting board
3 ... the mold plate
4 ... the bed die plate
5 ... middle fixed head
6 ... lower shifting board
7 ... bottom plate
8 ... guide pillar
9 ... guide rail
10 ... magazine
11 ... feed bin
12 ... fixed leg
13 ... following stem stem
14 ... former
15 ... push-down head
16A ... last stem stem
16B ... seaming chuck
17 ... the upper shifting board transmission device
18 ... servomotor
19 ... the lower shifting board transmission device
20 ... servomotor
21 ... magnetic
22 ... rare-earth permanent magnet
23 ... push rod
24 ... the magazine planker
25 ... the magazine cover plate
Claims (7)
1.1 plant the orientation compression molding device of rare-earth permanent magnet, comprise upper mounted plate, upper shifting board, mold plate, bed die plate, middle fixed head, lower shifting board, bottom plate, guide pillar, guide rail, magazine, feed bin, fixed leg, following stem stem, former, push-down head, go up stem stem, seaming chuck, upper shifting board transmission device and servomotor, lower shifting board transmission device and servomotor, magazine planker, magazine cover plate and push rod, it is characterized in that:
A. upper mounted plate, middle fixed head and bottom plate and guide pillar are fixed, and the quantity of guide pillar is more than or equal to 2,
B. seaming chuck is installed on upper shifting board; During orientation compression moulding annular rare-earth permanent magnet, last stem stem is installed on upper shifting board,
C. the upper shifting board transmission device is installed on upper mounted plate, by the shift position and the translational speed of servomotor control upper shifting board,
D. fixed leg is installed between bed die plate and the lower shifting board,
E. former is installed between mold plate and the bed die plate,
F. push-down head is installed on middle fixed head; During orientation compression moulding annular rare-earth permanent magnet, following stem stem is installed on lower shifting board,
G. the lower shifting board transmission device is installed on bottom plate, by the shift position and the translational speed of servomotor control lower shifting board,
H. guide rail, magazine, feed bin and push rod are installed on the mold plate.
2. the rare earth permanent magnet oriontation compression molding device described in claim 1 is characterized in that:
A. upper shifting board is upwards moved to peak, can dismantle stem stem and seaming chuck,
B. with lower shifting board to being displaced downwardly to minimum point, can will descend stem stem between upper shifting board and mold plate, to take out,
C. lower shifting board is upwards moved to peak, can dismantle push-down head,
D. the mold plate is moved up, the bed die plate moves down, and can dismantle former,
E. can change the magazine of different size.
3. the rare earth permanent magnet oriontation compression molding device described in claim 1 is characterized in that: upper shifting board, mold plate, bed die plate and lower shifting board rely on guide pillar to guarantee concentricity when mobile.
4. the rare earth permanent magnet oriontation compression molding device described in claim 1 is characterized in that: during orientation compression moulding rare-earth permanent magnet, by control program, last stem stem and seaming chuck can move respectively, also can move simultaneously.
5. the rare earth permanent magnet oriontation compression molding device described in claim 1 is characterized in that: during orientation compression moulding rare-earth permanent magnet, by control program, former can move as required.
6. the rare earth permanent magnet oriontation compression molding device described in claim 1 is characterized in that: during orientation compression moulding rare-earth permanent magnet, by control program, magazine can move along guide rail.
7. the rare earth permanent magnet oriontation compression molding device described in claim 1 is characterized in that: in the magazine moving process, and magazine planker seal silo lower surface, magazine cover plate for sealing magazine upper surface, guide rail sealing magazine lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201549651U CN201064922Y (en) | 2007-07-20 | 2007-07-20 | Orientation press forming device for rare earth permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201549651U CN201064922Y (en) | 2007-07-20 | 2007-07-20 | Orientation press forming device for rare earth permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201064922Y true CN201064922Y (en) | 2008-05-28 |
Family
ID=39482084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201549651U Expired - Fee Related CN201064922Y (en) | 2007-07-20 | 2007-07-20 | Orientation press forming device for rare earth permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201064922Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD3908C2 (en) * | 2008-10-24 | 2009-12-31 | Иван НЕКИТ | Process for presswork and form-shaping tool for realization thereof (variants) |
| CN102962879A (en) * | 2012-11-22 | 2013-03-13 | 海宁联丰磁业股份有限公司 | Manganese-zinc ferrite magnetic core molding process |
| CN110517883A (en) * | 2019-09-25 | 2019-11-29 | 杭州科兴磁业有限公司 | A kind of production technology of annular shape iron-chromium-cobalt permanent magnet |
| CN113927030A (en) * | 2021-09-09 | 2022-01-14 | 浙江英洛华磁业有限公司 | Neodymium iron boron rare earth permanent magnet orientation forming press |
-
2007
- 2007-07-20 CN CNU2007201549651U patent/CN201064922Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD3908C2 (en) * | 2008-10-24 | 2009-12-31 | Иван НЕКИТ | Process for presswork and form-shaping tool for realization thereof (variants) |
| CN102962879A (en) * | 2012-11-22 | 2013-03-13 | 海宁联丰磁业股份有限公司 | Manganese-zinc ferrite magnetic core molding process |
| CN102962879B (en) * | 2012-11-22 | 2014-09-24 | 海宁联丰磁业股份有限公司 | Manganese-zinc ferrite magnetic core molding process |
| CN110517883A (en) * | 2019-09-25 | 2019-11-29 | 杭州科兴磁业有限公司 | A kind of production technology of annular shape iron-chromium-cobalt permanent magnet |
| CN113927030A (en) * | 2021-09-09 | 2022-01-14 | 浙江英洛华磁业有限公司 | Neodymium iron boron rare earth permanent magnet orientation forming press |
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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 |
Granted publication date: 20080528 Termination date: 20160720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |