CN104552572B - The fitting method of mould and middle mould working face on a kind of permanent magnetic ferrite magnetic shoe mould - Google Patents
The fitting method of mould and middle mould working face on a kind of permanent magnetic ferrite magnetic shoe mould Download PDFInfo
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- CN104552572B CN104552572B CN201410830198.6A CN201410830198A CN104552572B CN 104552572 B CN104552572 B CN 104552572B CN 201410830198 A CN201410830198 A CN 201410830198A CN 104552572 B CN104552572 B CN 104552572B
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- mould
- working face
- sagitta
- upper mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/26—Assemblies of separate moulds, i.e. of moulds or moulding space units, each forming a complete mould or moulding space unit independently from each other
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses mould on a kind of permanent magnetic ferrite magnetic shoe mould and the fitting method of middle mould working face, based on product green compact figure, middle mould working face is by raised cambered surface R, sagitta H=H0T, string corresponding to sagitta H：The middle tangent transition circle r compositions of mould chord length horizontal extension line L, R and L, upper mould working face is by depression cambered surface R1, sagitta H1=H0T, sagitta H1Corresponding string：Upper mould chord length horizontal extension line L1、R1With L1Tangent transition circle r1Composition, thickness is placed between upper mould working face and middle mould working face for the filter paper filter cloth of t is used cooperatively, arc top is suitable with the both sides distance of arc, splits generation when this kind of method avoids the base substrate pressure release demoulding to the injury of base substrate internal organizational structure and the edge of a knife, improves green body quality.
Description
Technical field
The present invention relates to permanent ferrite wet pressure magnetic tile mold design technology, more particularly, to a kind of permanent ferrite magnetic tile
The fitting method of upper mould and middle mould working face.
Background technology
Permanent ferrite magnetic tile is curved, compressing with shaper, thus on magnetic shoe mould mould and middle mould work
Face is also designed to arc.Arc of the mould working face in depression is usually gone up, middle mould working face is in raised arc, upper mould and middle mould
Use cooperatively.Because permanent ferrite magnetic tile is the shaping of wet pressing high-intensity magnetic field, slurry has aqueous, granularity small（Slurry aqueous 35%
Left and right, 0.8~1.1um of raw material particle size）Feature, it is upper when mould is compressing that pad plus filter paper filter cloth are needed between mould and middle mould
Deng the slurry occurred in mould die mould is escaped, the problems such as base substrate overlap, crackle, mechanical strength, with upper mould and middle mould working face
Quality of fit has direct relation.
It is mould radian in determining according to the outer arc of green compact that mould coordinates with the working face of middle mould on currently known magnetic shoe mould
And sagitta, add thickness estimation upper mould radian and the sagitta of filter paper filter cloth, this rough evaluation method cause upper mould with
Middle mould working face goodness of fit difference and there is slurry during shaping and escape, and because the goodness of fit is improper, unbalance stress when causing the base substrate demoulding,
Base substrate internal stresses release gathers, and cracks（The edge of a knife is commonly called as to split）And base substrate bad mechanical strength etc. is bad.
The content of the invention
Deficiency of the present invention for existing design technology, there is provided mould and middle die worker make on a kind of permanent magnetic ferrite magnetic shoe mould
The fitting method in face, stress equalization, base substrate internal stress gently discharges, it is therefore prevented that injury and chord width to base substrate internal organizational structure
The generation that the face edge of a knife splits, improves green body quality.
The technical scheme is that：
The fitting method of mould and middle mould working face, includes following operating procedure on a kind of permanent magnetic ferrite magnetic shoe mould：
Upper mould and middle mould working face coordinate based on first determining green compact figure, if green compact outer arc R0, chord width W, sagitta H0, filter paper filter
Cloth thickness t, mould projection radian R=R in first determining on the basis of green compact figure0, sagitta H=H0- t, with H=H0Middle mould corresponding to-t
Horizontal extension line L, R and L tangent transition circle r, i.e. R=R of chord length0、H=H0Mould working face in-t, L, r composition；Make in middle die worker
Upper mould working face is designed on the basis of face：The Parallel Symmetric line P of middle mould arc top symmetrical center line is with W/21、P2With middle mould chord length
Horizontal extension line L meets at M respectively1、M2, take arc top M and M1、M2It is not arranged on the same straight line at 3 points, it is determined that upper mould depression radian R1、
Upper mould sagitta H1=H0-t、R1It is H with sagitta1Corresponding upper mould chord length horizontal extension line L1Tangent transition circle r1, i.e. R1、H1=H0-t、
L1、r1Mould working face in composition, pad plus filter paper filter cloth thickness are used cooperatively for t between upper mould and middle mould working face, upper mould and middle mould
Working face arc top is suitable with arc both sides distance.
The middle mould projection radian is designed to R=R0, sagitta H=H0- t, radian R and sagitta H=H0Middle mould chord length corresponding to-t
The horizontal extension outside both sides of line L intersection points are connected with the tangent transition circle of r=0.2~0.8mm, and wherein radian R-portion is raised arc
Face.
The upper mould working face is with the Parallel Symmetric line P of mould arc top symmetrical center line in W/2 works1、P2With middle mould chord length level
Extended line L meets at M respectively1、M2, take middle mould symmetrical arc top M and M1、M2, cross M, M at 3 points1、M2Circular arc is used as upper determined by 3 points
Mould depression cambered surface R1, sagitta H1=H0- t, upper mould cambered surface R1With sagitta H1=H0Upper mould chord length horizontal extension line L corresponding to-t1Intersection point
Outside both sides are connected with the tangent transition circle of r+0.2≤r1≤r+0.4mm, upper mould depression radian R1, sagitta H1=H0- t, mutually cut through
Cross round r1, upper mould chord length horizontal extension line L1Mould working face in composition, wherein radian R1Part is the cambered surface of depression.
Mould and middle mould working face are by radian face, chord length horizontal extension face, cambered surface and chord length horizontal extension plane in the present invention
It is tangent with arc transition, during the filter paper filter cloth that upper mould and middle mould working face pad add thickness as t, the both sides of arc top and arc apart away from
From suitable, in mould molding base substrate, extrados both sides can produce the platform of likeness in form shoulder shape, when compacting terminates pressure release, middle mould
The demoulding is return, upper mould cambered surface and shoulder shape platform protect base substrate extrados, and stress equalization, base substrate internal stress gently discharges, prevented
Stop the generation split to the injury of base substrate internal organizational structure and the chord width face edge of a knife, improve green body quality.
Brief description of the drawings
Fig. 1 is the design diagram of mould and middle mould working face on permanent magnetic ferrite magnetic shoe mould of the present invention.
Schematic diagram when mould and middle mould working face pad add filter paper filter cloth in Fig. 2 present invention.
A portions enlarged drawing in Fig. 3 Fig. 2 of the present invention.
Mould working face schematic diagram in Fig. 4 present invention.
Mould working face schematic diagram in Fig. 5 present invention.
Label in figure：1st, upper mould；2nd, middle mould；3rd, filter paper filter cloth.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings
Embodiment（See Fig. 1-Fig. 5）
The fitting method of mould and middle mould working face, includes following operating procedure on a kind of permanent magnetic ferrite magnetic shoe mould：
Upper mould and middle mould working face coordinate based on first determining green compact figure, if green compact outer arc R0, chord width W, sagitta H0, filter paper filter
Cloth thickness t, mould projection radian R=R in first determining on the basis of green compact figure0, sagitta H=H0- t, with H=H0Middle mould corresponding to-t
Horizontal extension line L, R and L tangent transition circle r, i.e. R=R of chord length0、H=H0Mould working face in-t, L, r composition；Make in middle die worker
Upper mould working face is designed on the basis of face：The Parallel Symmetric line P of middle mould arc top symmetrical center line is with W/21、P2With middle mould chord length
Horizontal extension line L meets at M respectively1、M2, take arc top M and M1、M2It is not arranged on the same straight line at 3 points, it is determined that upper mould depression radian R1、
Upper mould sagitta H1=H0-t、R1It is H with sagitta1Corresponding upper mould chord length horizontal extension line L1Tangent transition circle r1, i.e. R1、H1=H0-t、
L1、r1Mould working face in composition, pad plus filter paper filter cloth thickness are used cooperatively for t between upper mould and middle mould working face, upper mould and middle mould
Working face arc top is suitable with arc both sides distance.
Middle mould projection radian is designed to R=R0, sagitta H=H0- t, radian R and sagitta H=H0Middle mould chord length level corresponding to-t
The outside both sides of extended line L intersection points are connected with the tangent transition circle of r=0.2~0.8mm, and wherein radian R-portion is raised cambered surface.
Upper mould working face is with the Parallel Symmetric line P of mould arc top symmetrical center line in W/2 works1、P2Distinguish with middle mould chord length horizontal extension line L
Meet at M1、M2, take middle mould symmetrical arc top M and M1、M2, cross M, M at 3 points1、M2Circular arc determined by 3 points is used as upper mould depression cambered surface
R1, sagitta H1=H0- t, upper mould cambered surface R1With sagitta H1=H0Upper mould chord length horizontal extension line L corresponding to-t1The outside both sides of intersection point are with r
The tangent transition circle connection of+0.2≤r1≤r+0.4mm, upper mould depression radian R1, sagitta H1=H0- t, tangent transition circle r1, upper mould
Chord length horizontal extension line L1Mould working face in composition, wherein radian R1Part is the cambered surface of depression.
Upper mould 1 and the working face of middle mould 2 are by radian face, chord length horizontal extension face, cambered surface and chord length horizontal extension plane with circle
Arc transition is tangent, during the filter paper filter cloth that upper mould and middle mould working face pad add thickness as t, the both sides distance phase of arc top and arc
When in mould molding base substrate, extrados both sides can produce the platform of likeness in form shoulder shape, and when compacting terminates pressure release, middle mould is moved back
Mould back off, upper mould cambered surface and shoulder shape platform protect base substrate extrados, and stress equalization, base substrate internal stress gently discharges, prevents
The generation split to the injury of base substrate internal organizational structure and the chord width face edge of a knife, improves green body quality.
Claims (1)
1. on a kind of permanent magnetic ferrite magnetic shoe mould mould and middle mould working face fitting method, it is characterised in that include following
Operating procedure：Upper mould and middle mould working face coordinate based on first determining green compact figure, if green compact outer arc R0, chord width W, sagitta
H0, filter paper filter cloth thickness t, mould projection radian R=R in first determining on the basis of the green compact figure0, sagitta H=H0- t, with H=H0- t institute
Horizontal extension line L, R and L tangent transition circle r, i.e. R=R of mould chord length in correspondence0、H=H0Mould working face in-t, L, r composition；
Upper mould working face is designed on the basis of middle mould working face：The Parallel Symmetric line P of middle mould arc top symmetrical center line is with W/21、P2With
Middle mould chord length horizontal extension line L meets at M respectively1、M2, take arc top M and M1、M2It is not arranged on the same straight line at 3 points, it is determined that upper mould is recessed
Fall into radian R1, upper mould sagitta H1=H0-t、R1It is H with sagitta1Corresponding upper mould chord length horizontal extension line L1Tangent transition circle r1, i.e.,
R1、H1=H0-t、L1、r1Mould working face in composition, pad adds filter paper filter cloth thickness for t is used cooperatively between upper mould and middle mould working face,
Upper mould and middle mould working face arc top are suitable with arc both sides distance；
The middle mould projection radian is designed to R=R0, sagitta H=H0- t, radian R and sagitta H=H0Middle mould chord length level corresponding to-t
The outside both sides of extended line L intersection points are connected with the tangent transition circle of r=0.2~0.8mm, and wherein radian R-portion is raised cambered surface；
The upper mould working face is with the Parallel Symmetric line P of mould arc top symmetrical center line in W/2 works1、P2With middle mould chord length horizontal extension
Line L meets at M respectively1、M2, take middle mould symmetrical arc top M and M1、M2, cross M, M at 3 points1、M2Circular arc is recessed as upper mould determined by 3 points
Fall into cambered surface R1, sagitta H1=H0- t, upper mould cambered surface R1With sagitta H1=H0Upper mould chord length horizontal extension line L corresponding to-t1Intersection point is outside
Both sides are connected with the tangent transition circle of r+0.2≤r1≤r+0.4mm, upper mould depression radian R1, sagitta H1=H0- t, tangent transition circle
r1, upper mould chord length horizontal extension line L1Mould working face in composition, wherein radian R1Part is the cambered surface of depression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830198.6A CN104552572B (en) | 2014-12-25 | 2014-12-25 | The fitting method of mould and middle mould working face on a kind of permanent magnetic ferrite magnetic shoe mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830198.6A CN104552572B (en) | 2014-12-25 | 2014-12-25 | The fitting method of mould and middle mould working face on a kind of permanent magnetic ferrite magnetic shoe mould |
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| CN104552572A CN104552572A (en) | 2015-04-29 |
| CN104552572B true CN104552572B (en) | 2017-06-27 |
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| CN109624033B (en) * | 2018-12-28 | 2020-10-09 | 安徽龙磁科技股份有限公司 | Design method of concentric arc surface magnetic shoe mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05154812A (en) * | 1991-12-03 | 1993-06-22 | Kawasaki Steel Corp | Mold for wet type molding |
| CN200941337Y (en) * | 2005-10-26 | 2007-08-29 | 上海龙磁电子科技有限公司 | Upper mould of permanent-magnet ferrite tile wet pressure moulding die |
| CN201403032Y (en) * | 2009-05-06 | 2010-02-10 | 安徽龙磁科技股份有限公司 | Super-thick large chord high magnetic tile forming mold with down-rushing water pumping mechanism |
| CN102103925B (en) * | 2009-12-16 | 2013-01-16 | 广东江粉磁材股份有限公司 | Method and mold capable of controlling orientation of magnetic field in molding cavity |
| CN202185968U (en) * | 2011-07-30 | 2012-04-11 | 马鞍山市鑫洋永磁有限责任公司 | Magnetic shoe molding die with lower water holes |
| CN202943736U (en) * | 2012-12-07 | 2013-05-22 | 绵阳市东辰磁性材料有限公司 | Permanent magnetic ferrite wet-pressing tile-shaped magnet die |
| CN103707398B (en) * | 2013-11-26 | 2016-09-21 | 安徽金寨将军磁业有限公司 | The method for designing of automatic injection mold sprue of permanent magnetic ferrite tile |
| CN203888002U (en) * | 2014-06-23 | 2014-10-22 | 马鞍山市鑫洋永磁有限责任公司 | Die structure for improving motor magnetic tile center field |
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