CN102873325B - Method for feeding neodymium iron boron magnetic powder into die for pressing in layered mode - Google Patents
Method for feeding neodymium iron boron magnetic powder into die for pressing in layered mode Download PDFInfo
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- CN102873325B CN102873325B CN201210337817.9A CN201210337817A CN102873325B CN 102873325 B CN102873325 B CN 102873325B CN 201210337817 A CN201210337817 A CN 201210337817A CN 102873325 B CN102873325 B CN 102873325B
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Abstract
The invention relates to a method for feeding neodymium iron boron magnetic powder into a die for pressing in a layered mode. The method comprises the following steps that: the number of feeding layers and the feeding depth of each layer are calculated; the weighed magnetic powder is put into a feeding hopper arranged on a horizontal guide rail; a magnetic scale moves upwards and measures a preset value of a first layer, the feeding hopper moves forwards to the upper part of a die cavity along a horizontal guide plate, feeds and fills the die cavity and moves backwards to scrape the magnetic powder on the surface of the die cavity; and the magnetic scale moves downwards to a second layer and stops descending, the feeding hopper performs feeding and scraping for the second time, and the process is repeated until the final layer is fed and the magnetic powder is scraped. By a layered feeding and scraping method, the powder in the die cavity is uniformly filled, a magnetic steel product formed by pressing has a regular shape and is high in dimensional accuracy, reserved machining allowance can be reduced, and production cost is reduced; and the magnetic steel product formed by pressing has uniform density, and is high in magnetic property consistency after being magnetized.
Description
Technical field
The present invention relates to the compression-moulding methods of NdFeB magnetic powder, especially magnetic enters the layering feeding method of die cavity.
Background technology
The most magnetics that adopt of neodymium iron boron magnetic body are compressing in die cavity, because neodymium-iron-boron powder is little, viscosity is large, poor fluidity, while being poured in die cavity, natural packing becomes " arch heap " phenomenon, be difficult to shakeout corner, cause magnetic voidage in die cavity to increase, skewness in die cavity, product density after compacting is inconsistent, stampings are reserved larger allowance, and cause product magnetic orientation degree inconsistent, affect magnet performance.
CN102489701A is in full-automatic magnetic powder molding press, metering device is proposed, adopt feeding oil cylinder contiguous block to pull the delivery sheet under feed box inner bag to move to realize quantitative pan feeding in die cavity, but it is still disposable pan feeding, do not solve magnetic poor fluidity and in die cavity, form " arch heap ", cannot automatically shakeout corner, cause magnetic skewness problem in die cavity.Even thereby full-automatic magnetic powder molding press, still exist the magnet density after compacting inhomogeneous, magnet degree of orientation inconsistence problems still exists.
Summary of the invention
The present invention be directed in the compression molding of NdFeB magnetic powder and exist product density inconsistent, stampings are reserved adds the large problem of surplus, proposes a kind of neodymium iron boron equally distributed method in die cavity that makes, and solves magnet density consistency problem.
The present invention adopts to the method for die cavity layering feeding and realizes above-mentioned purpose.
NdFeB magnetic powder enters the layering feeding method of mold pressing system, and its feature comprises the following steps:
A), according to rectangle die cavity cross-sectional area and the number of plies of cavity depth ratio calculation layering feeding and the degree of depth of every layer of feeding, and deposit PLC controller in;
B), feeding hopper is placed on the horizontal guide rail on die cavity, the magnetic of having weighed is put into feeding hopper entirely;
When c), PLC controller control magnetic railings ruler promotion push-down head rises to the feeding degree of depth of default ground floor, magnetic railings ruler stops vertical motion, feeding hopper is taken action forward along horizontal guide rail, when feeding hopper is positioned at die cavity top, to die cavity feeding, fills up, and feeding hopper backward regression strikes off cavity surface magnetic;
D), PLC controls magnetic railings ruler and moves down, and stops down maneuver when magnetic railings ruler measures the feeding degree of depth of the second layer, feeding hopper carries out for the second time feeding and strikes off, be so circulated to last one deck feeding complete and strike off magnetic till;
E), fill in die cavity and fill and lead up after magnetic, work of electromagnet produces after magnetic field is orientated magnetic, seaming chuck, under the effect of upper cylinder, is suppressed into magnet by magnetic.
Described rectangle die cavity cross-sectional area and cavity depth ratio are less than at 25 o'clock, can be divided into 6～8 layers of feeding, and described rectangle die cavity cross-sectional area and cavity depth ratio are more than or equal at 25 o'clock, can be divided into 3～5 layers of feeding.
While dividing 5 layers of feeding, every layer depth is controlled at respectively 30～35%, 25～30%, 15～25%, 8～15%, 4～8% of rectangle cavity depth.
The invention has the beneficial effects as follows: the method that adopts layering feeding to strike off, make the powder packed in die cavity even, repressed magnet steel product design is regular, and dimensional accuracy is high, can reduce reserving machine allowance, reduces production costs; Compressing magnet steel product density is even, after magnetizing, and magnetic property high conformity.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is that the A of Fig. 1 is to view.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
embodiment 1
As shown in Figure 1 and Figure 2, suppress the neodymium-iron-boron product made from steel of a certain specification, it is long that its cavity dimension is designed to 20.5mm() * 65.5mm(is wide) * 83.85mm(is dark).By the radiometer of the cross-sectional area of rectangle die cavity 6 and cavity depth, calculate the number of plies of layering feeding and the degree of depth of every layer of feeding, feeding hopper 4 is placed on the horizontal guide rail 1 on die cavity 6, PLC controller 12 is controlled reinforced process: lower oil cylinder 9 drives magnetic railings ruler 10 to move upward, promoting push-down head 8 rises, when the measured value of magnetic railings ruler 10 reaches preset value, be that die cavity 6 upper cavity height are while reaching 22mm, lower oil cylinder 9 stop motions, reciprocating air cylinder 5 is subject to order action, drive feeding hopper 4 to travel forward along guide rail 1, when feeding chamber 3 is positioned at die cavity 6 top, the interior magnetic in feeding chamber 3 moves downward and enters die cavity 6, reciprocating air cylinder 5 stroke that travels forward finishes, motion resets backward, feeding hopper 4 moves backward along guide rail 1, strike off the magnetic on die cavity 6 surfaces.This at present oil cylinder 9 made, drive magnetic railings ruler 10 to move downward, when magnetic railings ruler 10 measured values reach preset value, lower oil cylinder stop motion, push-down head 8 moves down 18mm under lower oil cylinder 9 drives, and there is cavity in die cavity 6 tops, reciprocating air cylinder 5 is subject to order action to drive feeding chamber 3 to moving forward to die cavity 6 tops again, by feeding hopper 4, in die cavity 6 top cavitys, fill magnetic 7, feeding hopper 4 along guide rail 1 backward translation strike off the surperficial magnetic of die cavity 6, secondary operation cycle finishes.Again repeat above-mentioned operation cycle, push-down head 8 decline successively 15mm, 12mm, 9mm, 5mm, 2.85mm.After above-mentioned operation cycle, in die cavity, fill and fill and lead up magnetic.Electromagnet 11 work, after generation magnetic field is orientated magnetic 7, seaming chuck 2, under the effect of upper cylinder, is suppressed into magnetic patch by magnetic.
embodiment 2
Suppress the neodymium-iron-boron product made from steel of a certain specification, it is long that its cavity dimension is designed to 58.6mm() * 52.3mm(is wide) * 84.48mm(is dark).By the radiometer of the cross-sectional area of rectangle die cavity 6 and cavity depth, calculate the number of plies of layering feeding and the degree of depth of every layer of feeding, feeding hopper 4 is placed on the horizontal guide rail 1 on die cavity 6, PLC controller 12 is controlled reinforced process: lower oil cylinder 9 drives magnetic railings ruler 10 to move upward, promoting push-down head 8 rises, when the measured value of magnetic railings ruler 10 reaches preset value, be that die cavity 6 upper cavity height are while reaching 30mm, lower oil cylinder 9 stop motions, reciprocating air cylinder 5 is subject to order action, drive feeding hopper 4 to travel forward along guide rail 1, when feeding chamber 3 is positioned at die cavity 6 top, the interior magnetic in feeding chamber 3 moves downward and enters die cavity 6, reciprocating air cylinder 5 stroke that travels forward finishes, motion resets backward, feeding hopper 4 moves backward along guide rail 1, strike off the magnetic on die cavity 6 surfaces.This at present oil cylinder 9 made, drive magnetic railings ruler 10 to move downward, when magnetic railings ruler 10 measured values reach preset value, lower oil cylinder 9 stop motions, push-down head 8 moves down 23mm under lower oil cylinder drives, and there is cavity in die cavity 6 tops, reciprocating air cylinder 5 is subject to order action again, drive feeding chamber 3 to moving forward to die cavity 6 tops, by feeding hopper 4, in die cavity 6 top cavitys, fill magnetic, operation cycle finishes.Again repeat above-mentioned operation cycle, push-down head decline successively 18mm, 8mm, 5.48mm.After above-mentioned operation cycle, in die cavity 6, fill and fill and lead up magnetic.Electromagnet 11 work, after generation magnetic field is orientated magnetic, seaming chuck 2, under the effect of upper cylinder, is suppressed into magnetic patch by magnetic.
Claims (3)
1. NdFeB magnetic powder layering enters the method that mould magnetizes and suppresses, and its feature comprises the following steps:
A), according to rectangle die cavity cross-sectional area and the number of plies of cavity depth ratio calculation layering feeding and the degree of depth of every layer of feeding, and deposit PLC controller in;
B), feeding hopper is placed on the horizontal guide rail on die cavity, the magnetic of having weighed is put into feeding hopper entirely;
When c), PLC controller control magnetic railings ruler promotion push-down head rises to the feeding degree of depth of default ground floor, magnetic railings ruler stops vertical motion, feeding hopper is taken action forward along horizontal guide rail, when feeding hopper is positioned at die cavity top, to die cavity feeding, fills up, and feeding hopper backward regression strikes off cavity surface magnetic;
D), PLC controls magnetic railings ruler and moves down, and stops down maneuver when magnetic railings ruler measures the feeding degree of depth of the second layer, feeding hopper carries out for the second time feeding and strikes off, be so circulated to last one deck feeding complete and strike off magnetic till;
E), fill in die cavity and fill and lead up after magnetic, work of electromagnet produces after magnetic field is orientated magnetic, seaming chuck, under the effect of upper cylinder, is suppressed into magnet by magnetic.
2. neodymium-iron-boron layering according to claim 1 enters the method that mould magnetizes and suppresses, it is characterized in that described rectangle die cavity cross-sectional area and cavity depth ratio are less than at 25 o'clock, can be divided into 6～8 layers of feeding, described rectangle die cavity cross-sectional area and cavity depth ratio are more than or equal at 25 o'clock, can be divided into 3～5 layers of feeding.
3. neodymium-iron-boron layering according to claim 2 enters the magnetize method of compacting of mould, and while it is characterized in that minute 5 layers of feeding, every layer depth is controlled at respectively 30～35%, 25～30%, 15～25%, 8～15%, 4～8% of rectangle cavity depth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337817.9A CN102873325B (en) | 2012-09-13 | 2012-09-13 | Method for feeding neodymium iron boron magnetic powder into die for pressing in layered mode |
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| CN201210337817.9A CN102873325B (en) | 2012-09-13 | 2012-09-13 | Method for feeding neodymium iron boron magnetic powder into die for pressing in layered mode |
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| CN102873325A CN102873325A (en) | 2013-01-16 |
| CN102873325B true CN102873325B (en) | 2014-11-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506622B (en) * | 2013-09-29 | 2016-02-10 | 成都易态科技有限公司 | The isostatic pressing mold of sintered powder material, forming method and annex thereof |
| CN104495411A (en) * | 2014-11-13 | 2015-04-08 | 孔庆虹 | Pneumatic feeding set |
| CN108723360B (en) * | 2018-06-22 | 2024-03-26 | 江门杰富意磁性材有限公司 | Forming and pressing equipment and method for mesh-shaped magnetic cores |
| CN110239141A (en) * | 2019-06-26 | 2019-09-17 | 浙江湾区机器人技术有限公司 | A kind of feeding device and charging process for various powders layering |
| CN111871489A (en) * | 2020-07-02 | 2020-11-03 | 潍坊潍液机械有限公司 | Neodymium iron boron magnetic powder crushing equipment |
| CN113927030B (en) * | 2021-09-09 | 2023-06-16 | 浙江英洛华磁业有限公司 | Neodymium iron boron rare earth permanent magnet orientation molding press |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893791A (en) * | 1973-06-06 | 1975-07-08 | Jurid Werke Gmbh | Pressing apparatus |
| CN2797021Y (en) * | 2005-04-19 | 2006-07-19 | 王可义 | Feeding device of electric brush horizontal mould press shaping full automatic hydropress |
| CN101355222A (en) * | 2008-09-19 | 2009-01-28 | 神奇电碳集团有限公司 | Method for pressed forming multilayer electrical brush |
| CN102233637A (en) * | 2010-05-05 | 2011-11-09 | 蔡业 | Plastic mixture mold pressing machine translation blanking mechanism |
| CN102275334A (en) * | 2011-08-19 | 2011-12-14 | 天津市天锻压力机有限公司 | Powder feeding device for powder hydraulic machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967006A (en) * | 1982-10-08 | 1984-04-16 | Hitachi Ltd | Tablet forming machine |
| JP3560197B2 (en) * | 1996-01-09 | 2004-09-02 | 東芝セラミックス株式会社 | Method and apparatus for manufacturing sliding brush for electric machine |
| JPH10180493A (en) * | 1996-12-19 | 1998-07-07 | Tokin Corp | Powder compacting device and compacting method using the same |
| JP2007196263A (en) * | 2006-01-26 | 2007-08-09 | Matsushita Electric Ind Co Ltd | Apparatus and method for compacting powder, and method for charging powder |
-
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- 2012-09-13 CN CN201210337817.9A patent/CN102873325B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893791A (en) * | 1973-06-06 | 1975-07-08 | Jurid Werke Gmbh | Pressing apparatus |
| CN2797021Y (en) * | 2005-04-19 | 2006-07-19 | 王可义 | Feeding device of electric brush horizontal mould press shaping full automatic hydropress |
| CN101355222A (en) * | 2008-09-19 | 2009-01-28 | 神奇电碳集团有限公司 | Method for pressed forming multilayer electrical brush |
| CN102233637A (en) * | 2010-05-05 | 2011-11-09 | 蔡业 | Plastic mixture mold pressing machine translation blanking mechanism |
| CN102275334A (en) * | 2011-08-19 | 2011-12-14 | 天津市天锻压力机有限公司 | Powder feeding device for powder hydraulic machine |
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Address after: 315031 Cicheng Town West Gate, Jiangbei District, Ningbo City, Zhejiang Province Patentee after: Ningbo Ketian Magnetic Industry Co.,Ltd. Patentee after: NINGBO JINTIAN COPPER (GROUP) Co.,Ltd. Address before: 315034, No. 1 West Chengxi Road, Ningbo, Zhejiang Patentee before: NINGBO KETIAN MAGNET Co.,Ltd. Patentee before: NINGBO JINTIAN COPPER (GROUP) Co.,Ltd. |
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