CN201597106U - Upper mold of permanent magnet ferrite wet-press magnetic field forming mold for magnetic shoes - Google Patents
Upper mold of permanent magnet ferrite wet-press magnetic field forming mold for magnetic shoes Download PDFInfo
- Publication number
- CN201597106U CN201597106U CN2010200332201U CN201020033220U CN201597106U CN 201597106 U CN201597106 U CN 201597106U CN 2010200332201 U CN2010200332201 U CN 2010200332201U CN 201020033220 U CN201020033220 U CN 201020033220U CN 201597106 U CN201597106 U CN 201597106U
- Authority
- CN
- China
- Prior art keywords
- water
- magnetic field
- water sucking
- plate
- magnet ferrite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The utility model relates to an upper mold of a permanent magnet ferrite wet-press magnetic field forming mold for magnetic shoes, which comprises a water pumping plate. A set of horizontally parallel water sucking holes are arranged from side faces to contact positions with a green on two sides of the water pumping plate, water sucking nozzles are respectively arranged on the lower portions of two sides of the water pumping plate and communicated with the water sucking holes. Diameters of the water sucking holes are 1-2mm, vertical spaces among the water sucking holes are 5mm, and horizontal spaces among the water sucking holes are 7mm. Two layers of filter cloth or filter paper are wrapped at the contact positions of the water pumping plate with the green. A row of aqueducts are added on an inner cavity of the water pumping plate and communicated with the water sucking holes. The aqueducts have a depth of 1-1.5mm and a width equal to the diameter of the water sucking holes and penetrate through a whole arc face of the inner cavity of the water pumping plate. The upper mold has the advantage of capabilities of improving water sucking and ventilation efficiency, enhancing moisture content evenness of greens, and reducing shortcomings of soft feet, cracking, sintering deformation and the like caused by uneven moisture content, and has especially evident effect applied in large-radian products with larger arc centre angle.
Description
Technical field
The utility model relates to a kind of moulding magnetic shoe mould, especially a kind of permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe mould that is used for.
Background technology
Permanent-magnet ferrite wet type pressing under magnetic field magnetic shoe (magnetic shoe is called for short in the back) mainly is used as automobile, household electrical appliances direct current generator.Along with the raising of economic level, market demand increases severely, and competition among enterprises is increasingly sharpened, and how to improve the finished product rate, reduces production costs to be the significant challenge that the magnetic industry and enterprise is faced.
The magnetic shoe product is bad to mainly contain crackle, fall piece and sintering warpage, accounts for total bad about 70%.From the mould aspect, the dehydration exhaust condition of green compact 3 had also determined the moulding of magnetic shoe green compact 3 to have or not good environment-guarantee when the quality of dewatering plate structural design directly determined compacting.The double plate 1 that draws water of doing of existing upper mould, suction eye 2 vertically is spot distribution and meets personally Fig. 1 at the magnetic shoe outer arc, and moisture and air are pumped vertically upward, deliver to vacuum tank by water absorbing nozzle then, discharge mould.
This pumping structure has following defective:
1. the dehydration exhaust velocity is slow, and efficient is low and dehydrating effect is not good, prolongs molding time
Vertical dehydration is just to be sent to vacuum tank after earlier moisture in the green compact being pumped certain altitude vertically upward by the suction hole, this has just done idle work, and water-taking efficiency is not high, and moisture can not in time siphon away around when minute mould, drop to the green compact surface, cause green compact bad;
2. the dehydration exhaust is inhomogeneous
The suction hole is spot distribution, and the suction area is very limited, moisture and air flow difficulties, the locality that causes green compact to dewater;
3. for the bigger product of centering angle, because reasons in structure own causes the vertical water sucting mode of its green density inhomogeneous (the higher both sides of intermediate density are lower) inefficiency, more aggravated the density unevenness of big arc core product, caused as a series of defectives such as soft angle, sintering warpages;
Based on above reason, must be improved the hold concurrently structure of water sucting plate of upper mould.
Summary of the invention
The utility model is the technical problem that will solve mode structure drainage exhaust efficient, and a kind of permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe upper mould is provided, and this patrix can improve the product density uniformity, improves the finished product rate.
For achieving the above object, the technical solution of the utility model is: a kind of permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe upper mould, comprise the plate that draws water, be characterized in: the both sides of the plate that draws water are provided with one group of suction hole of horizontal parallel from the side to the green compact contact position, the draw water bottom, both sides of plate is respectively equipped with water absorbing nozzle, and water absorbing nozzle communicates with the suction hole.
The suction bore dia is 1 ~ 2mm, perpendicular separation 5mm, horizontal interval 7mm; Draw water plate and green compact contact position is surrounded by two-layer filter cloth or filter paper; Draw water and have additional row's gutter on the plate inner chamber, and communicate with the suction hole; The diversion groove depth is 1 ~ 1.5mm, and width equals the bore dia that absorbs water, and runs through the whole plate inner cavity cambered surface that draws water.
The beneficial effects of the utility model are:
The utility model employing level suction hole cooperates gutter to have the following advantages:
(1) the exhaust degree-of-difficulty factor of drawing water is low, and speed is fast, the efficient height;
The exhaust capacity that draws water rapidly and efficiently provides good external environment condition for the moulding of green compact
(2) area is wide, and the scope of drawing water increases and be even;
Gutter runs through cambered surface and is arranged in parallel, and compares the suction area with the spot distribution mode and promotes (more than 2 ~ 3 times) significantly, reduces the die cavity exhaust dead angle of drawing water, reduced to a great extent since aqueous vapor can't to drain the soft angle that causes, sintering warpage etc. bad.
(3) for the big product of centering angle, in pressing process, intermediate density often will be higher than both sides density, because the inequality of density often causes blank strength bad, defectives such as the sintering after-contraction is inconsistent, and the improvement of patrix water sucting plate structure can reduce the both sides water content to a certain extent, reduces the slip flowability, improve both sides density in the certain limit, reduce density contrasts middle and both sides.
Description of drawings
To be that existing patrix is double do that suction eye vertically is the spot distribution schematic diagram on the plate that draws water to Fig. 1;
Fig. 2 is a structure cutaway view of the present utility model;
Fig. 3 is the plate cutaway view that draws water of the present utility model;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the left view of Fig. 3;
Fig. 6 is the plate schematic perspective view that draws water of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Extremely shown in Figure 6 as Fig. 2, permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe upper mould of the present utility model, comprise the plate 1 that draws water, the draw water both sides of plate 1 are provided with one group of suction hole 2 of horizontal parallel from the side to green compact 3 contact positions, the draw water bottom, both sides of plate 1 is respectively equipped with water absorbing nozzle 4, and water absorbing nozzle 4 communicates with suction hole 2.
The plate that draws water suction hole 2 is designed to horizontal parallel and distributes, and as shown in Figure 2, water absorbing nozzle 4 is distributed in the both sides of plate, is in green compact 3 lower parts, and moisture and air can directly enter water absorbing nozzle 4 and discharge die cavity.The distribution in suction hole 2 is according to the difference of product and difference, and the aperture is 1.5mm usually, the 5X7 distribution, i.e. and perpendicular separation 5mm, horizontal interval 7mm sees shown in Figure 5ly, double-bag during moulding filter cloth 5 or filter paper can reach best soaking effect.Set up gutter 6, gutter 6 must communicate as shown in Figure 6 with suction hole 2, and gutter 6 dark 1 ~ 1.5mm, width hole 2 diameters that equal to absorb water run through whole cambered surface, will guarantee that tangent plane is level and smooth after gutter 6 cuttings.
According to the requirement after the improvement, select the mould of the product of 110 ° of a centering angles, process one of patrix again, water absorbing nozzle settles the patrix both sides by the below according to figure, and other accessories are constant.
Identical press, identical technology is produced after debugging, in the pressing process, air is discharged die cavity fast by gutter in the die cavity, avoid that residual gas causes secretly split, pore.Moisture, is discharged by the suction hole to two side flow along pressure direction, and after compacting was magnetized and finished, patrix rose, and no moisture is residual.
Mould (same size) before and after the improvement is under identical moulding process, 1000 of each moulding, sintering (being identical sintering process and environment) simultaneously, as follows through grinding check back result: (the shared bad percentage always of crackle, soft angle and sintering warpage that causes because of aqueous vapor)
Improvement front mold: about 45%
Improvement back mould: below 25%.
Good dewatering state is the important leverage of green compact moulding, shows that according to above data improvement back mould fraction defective has obvious reduction.
Claims (5)
1. permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe upper mould, comprise the plate that draws water (1), it is characterized in that: the both sides of the described plate that draws water (1) are provided with one group of suction hole (2) of horizontal parallel from the side to green compact (3) contact position, drawing water, (10 bottom, both sides is respectively equipped with water absorbing nozzle (4) to plate, and water absorbing nozzle (4) communicates with suction hole (2).
2. permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe upper mould according to claim 1, it is characterized in that: described suction hole (2) diameter is 1 ~ 2mm, perpendicular separation 5mm, horizontal interval 7mm.
3. permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe upper mould according to claim 1 is characterized in that: the described plate that draws water (1) is surrounded by two-layer filter cloth or filter paper (5) with green compact (3) contact position.
4. permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe patrix according to claim 1 is characterized in that: have additional row's gutter (6) on the described plate that draws water (1) inner chamber, and communicate with suction hole (2).
5. permanent-magnet ferrite wet pressing pressing under magnetic field magnetic shoe upper mould according to claim 4, it is characterized in that: described gutter (6) is 1 ~ 1.5mm deeply, width hole (2) diameter that equals to absorb water, and run through the whole plate that draws water (1) inner cavity cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200332201U CN201597106U (en) | 2010-01-19 | 2010-01-19 | Upper mold of permanent magnet ferrite wet-press magnetic field forming mold for magnetic shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200332201U CN201597106U (en) | 2010-01-19 | 2010-01-19 | Upper mold of permanent magnet ferrite wet-press magnetic field forming mold for magnetic shoes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201597106U true CN201597106U (en) | 2010-10-06 |
Family
ID=42808153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200332201U Expired - Lifetime CN201597106U (en) | 2010-01-19 | 2010-01-19 | Upper mold of permanent magnet ferrite wet-press magnetic field forming mold for magnetic shoes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201597106U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009464A (en) * | 2013-01-06 | 2013-04-03 | 郑明权 | Permanent-magnetism wet pressure bottom-jacking type forming hydraulic press |
| CN112659328A (en) * | 2020-12-23 | 2021-04-16 | 湖南航天磁电有限责任公司 | Upper die plate structure of sintering permanent magnetic ferrite forming die for wet forming |
| CN112706260A (en) * | 2020-12-31 | 2021-04-27 | 福建鸿益机械有限公司 | Upper-suction lower-filter side-suction concrete stone-imitating roadside stone forming device |
| CN113334531A (en) * | 2020-02-18 | 2021-09-03 | 湖南航天磁电有限责任公司 | Large-central-angle magnetic shoe forming upper die and large-central-angle magnetic shoe forming method |
| CN114211593A (en) * | 2021-12-29 | 2022-03-22 | 中钢天源(马鞍山)通力磁材有限公司 | Method for improving collapse force of permanent magnetic ferrite magnetic shoe |
| CN116455153A (en) * | 2023-04-18 | 2023-07-18 | 浙江中科磁业股份有限公司 | Shaping device of magnetic shoe blank for high-rotation-speed and high-torque driving motor |
-
2010
- 2010-01-19 CN CN2010200332201U patent/CN201597106U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009464A (en) * | 2013-01-06 | 2013-04-03 | 郑明权 | Permanent-magnetism wet pressure bottom-jacking type forming hydraulic press |
| CN103009464B (en) * | 2013-01-06 | 2015-04-29 | 郑明权 | Permanent-magnetism wet pressure bottom-jacking type forming hydraulic press |
| CN113334531A (en) * | 2020-02-18 | 2021-09-03 | 湖南航天磁电有限责任公司 | Large-central-angle magnetic shoe forming upper die and large-central-angle magnetic shoe forming method |
| CN113334531B (en) * | 2020-02-18 | 2024-01-19 | 湖南航天磁电有限责任公司 | Forming upper die of large central angle magnetic shoe and forming method of large central angle magnetic shoe |
| CN112659328A (en) * | 2020-12-23 | 2021-04-16 | 湖南航天磁电有限责任公司 | Upper die plate structure of sintering permanent magnetic ferrite forming die for wet forming |
| CN112706260A (en) * | 2020-12-31 | 2021-04-27 | 福建鸿益机械有限公司 | Upper-suction lower-filter side-suction concrete stone-imitating roadside stone forming device |
| CN114211593A (en) * | 2021-12-29 | 2022-03-22 | 中钢天源(马鞍山)通力磁材有限公司 | Method for improving collapse force of permanent magnetic ferrite magnetic shoe |
| CN116455153A (en) * | 2023-04-18 | 2023-07-18 | 浙江中科磁业股份有限公司 | Shaping device of magnetic shoe blank for high-rotation-speed and high-torque driving motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201597106U (en) | Upper mold of permanent magnet ferrite wet-press magnetic field forming mold for magnetic shoes | |
| CN204658628U (en) | With the concrete block moulding machine of vacuum water absorber | |
| CN206259248U (en) | Mould water sucting plate on a kind of forming die for permanent magnet ferrite magnetic shoe | |
| CN202185968U (en) | Magnetic shoe molding die with lower water holes | |
| CN201845657U (en) | Anti-backwater forming die for wet-pressing permanent ferrite magnetic tile | |
| CN104647573A (en) | Easy-to-release anti-blocking original-side ceramic tile forming mould | |
| CN203331201U (en) | Double-drainage die | |
| CN201403032Y (en) | Super-thick large chord high magnetic tile forming mold with down-rushing water pumping mechanism | |
| CN201036887Y (en) | Magnetic material wet-pressing automatic filling double-face water-absorbing mould | |
| CN203391080U (en) | Upper die extrusion drainage device of high pressure forming machine | |
| CN201042855Y (en) | Wet-press shaping mold for permanent ferrite product | |
| CN203330380U (en) | Motor rotor casting die | |
| CN200941337Y (en) | Upper mould of permanent-magnet ferrite tile wet pressure moulding die | |
| CN205766756U (en) | Permanent ferrite magnetic tile water sucting plate | |
| CN203031726U (en) | Bottom ejection type permanent magnet wet pressing hydraulic machine | |
| CN203542813U (en) | Female die structure with good water absorption performance in magnetic shoe wet pressing process | |
| CN201766991U (en) | Hydraulic forming machine for tea | |
| CN202922737U (en) | Water absorbing plate of permanent magnetic ferrite magnetic shoe mold | |
| CN205967419U (en) | Sintering forming die radially exerts pressure | |
| CN220826125U (en) | High-bow-height magnetic shoe upper die structure | |
| CN204585483U (en) | A kind of Full-automatic hydraulic forming machine | |
| CN221912477U (en) | Upper die of permanent ferrite magnetic shoe die | |
| CN207781737U (en) | Horizon battery acid filling equipment | |
| CN203602953U (en) | Vacuum dehydration system of papermaking press section | |
| CN204122161U (en) | Dust-protection type disintegrating machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |
|
| CX01 | Expiry of patent term |