CN201371597Y - Forming mold of powder products - Google Patents
Forming mold of powder products Download PDFInfo
- Publication number
- CN201371597Y CN201371597Y CN200920141482U CN200920141482U CN201371597Y CN 201371597 Y CN201371597 Y CN 201371597Y CN 200920141482 U CN200920141482 U CN 200920141482U CN 200920141482 U CN200920141482 U CN 200920141482U CN 201371597 Y CN201371597 Y CN 201371597Y
- Authority
- CN
- China
- Prior art keywords
- mold
- counterdie
- lower mold
- outer lower
- inwall
- 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 - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
Abstract
The utility model relates to a forming mold of powder products, comprising an inner mold and an outer mold which are mutually engaged. The forming mold is characterized in that the outer mold consists of an outer upper mold and an outer lower mold, both the outer upper mold and the outer lower mold are equipped with cylindrical cavities, and the inner wall of the outer upper mold and the inner wall of the outer lower mold are mutually engaged to form an outer mold step. The outer upper mold and the outer lower mold are arranged integrally, the inner wall of the outer upper mold and the inner wall of the outer lower mold are mutually engaged to form the outer mold step, the outer lower mold is made of wear resistant materials, therefore, when demolding, as long as the top of a formed product leaves the outer lower mold, friction of the bottom of the formed product from the outer lower mold is reduced rapidly, the inner wall of the outer lower mold is relative low in wear, and then the forming mold can not meet bottleneck problems during long-term usage. The forming mold is relatively long in service life and produces products which are high in bonding strength and is not easy to crack.
Description
Technical field
The utility model relates to a kind of mould, especially relates to a kind of mould of pulverulent product.
Background technology
The mould of traditional pulverulent product is usually designed to tilting (as shown in Figure 1), when compacted products, top die from top to bottom moves, and the pressure that is subjected to of external mold increases from top to bottom gradually in the pressing process, so can cause the upper inside wall wearing and tearing of external mold little, the bottom wearing and tearing are big.And during the demoulding, the extrusion expansion that counterdie is born in the shaped article bottom strengthens, and shaped article and external mold relative motion meeting produce great frictional resistance.Along with the rising of demoulding height, the internal diameter of external mold is to become big gradually, but it is very slow to become big speed, thereby the wearing and tearing of external mold inwall are very serious in this process, and the bond strength of moulded products also can descend a lot.After the moulding goods partly left external mold, at this moment, moulded products bottom was subjected to resistance force diminishes, and the thrust of bottom counterdie diminishes, and expanded and diminish in the bottom, thereby diminished with the frictional force of external mold inwall, and the wearing and tearing that external mold is subjected to have also diminished.Wearing and tearing are comparatively serious when the external mold bottom, make the volume of shaped article become big, make that again and again the internal diameter of external mold bottom is increasing, and the internal diameter on external mold top increases simultaneously not, therefore can produce bottleneck after using for a long time, cause the cracking of shaped article easily.This shows, the mould of tilting pulverulent product not only service life short, and easily cause moulded products cracking, bond strength low.
The utility model content
The utility model mainly is that to solve existing in prior technology short service life, easily causes low etc. the technical problem of moulded products cracking, bond strength, and a kind of long service life is provided, and is difficult for causing the mould of the pulverulent product of moulded products cracking.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of mould of pulverulent product, comprise the internal mold and the external mold that cooperatively interact, it is characterized in that: described external mold is made up of outer patrix and outer counterdie, be equipped with cylindrical cavity on outer patrix and the outer counterdie, and the inwall of the inwall of outer patrix and outer counterdie complements each other to form an external mold step.Outer patrix and outer counterdie are for being wholely set, the inwall of outer patrix and the inwall of outer counterdie complement each other to form an external mold step, and outer counterdie adopts comparatively wear-resisting material to make, thereby in the demoulding, as long as it is very fast that the speed that the frictional force of the outer counterdie that outer counterdie then is subjected to bottom it diminishes is left at the top of moulded products, the inner wall abrasion of outer counterdie is less, the permanent use can not produce bottleneck yet, thereby the utlity model has long service life, the product bond strength of producing is big, and is not easy to crack.
As preferably, the cross sectional shape of described outer patrix inwall is similar to the cross sectional shape of outer counterdie inwall, and the girth of outer counterdie inwall is less than the girth of outer patrix inwall.Form up big and down small ledge structure, the speed that the top of moulded products is left behind the outer counterdie and the frictional force of outer counterdie diminishes is very fast.
As preferably, described outer patrix and outer counterdie are coaxial setting.Help the demoulding of product.
As preferably, offer the internal mold step in the internal mold upper end.Reduce the frictional force of shaped article and internal mold when helping the demoulding.
As preferably, the step surface of described internal mold step is equal with the end face of outer counterdie.The step surface of internal mold step is equal with the end face of outer counterdie, and during counterdie, the frictional force of its inwall and internal mold also sharply descends outside the top of moulding product begins to break away from, and helps reducing the frictional force of shaped article bottom and outer counterdie, reduces the wearing and tearing of outer counterdie.
Therefore, the utility model has longer service life compared to existing technology, and the shaped article that compacting is come out has bond strength preferably, and is not easy to crack.
Description of drawings
Accompanying drawing 1 is the cutaway view of tilting pulverulent product mould;
Accompanying drawing 2 is cutaway views of the present utility model.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: see Fig. 2, a kind of mould of pulverulent product comprises the internal mold 1 and the external mold 2 that cooperatively interact, and external mold 2 is made up of outer patrix 21 and outer counterdie 22, and outer patrix 21 and outer counterdie 22 are for being wholely set.Be equipped with toroidal cavity 23 on outer patrix 21 and the outer counterdie 22, the cross sectional shape of outer patrix 21 inwalls is similar to the cross sectional shape of outer counterdie 22 inwalls, and the girth of outer counterdie 22 inwalls is less than the girth of outer patrix 21 inwalls.The upper end of internal mold 1 offers internal mold step 11.Offer internal mold step 11 in the upper end of internal mold 1, reduce the frictional force of shaped article and internal mold when helping the demoulding.The step surface of internal mold step 11 is equal with the end face of outer counterdie 22.During counterdie, the frictional force of its inwall and internal mold 1 also sharply descends outside the top of moulding product begins to break away from, and helps reducing the frictional force of shaped article bottom and outer counterdie, reduces the wearing and tearing of outer counterdie.
By the internal diameter of outer counterdie 22 being provided with less than the internal diameter of outer patrix 21, outer counterdie 22 adopts comparatively wear-resisting material to make, thereby in the demoulding, as long as it is very fast that the speed that the frictional force of the outer counterdie that outer counterdie then is subjected to bottom it diminishes is left at the top of moulded products, the inner wall abrasion of outer counterdie is less, and permanent the use can not produce bottleneck yet, thereby the utlity model has long service life, the product bond strength of producing is big, and is not easy to crack.
It is apparent to one skilled in the art that the utility model can be changed into multiple mode, and such change is not thought and broken away from scope of the present utility model.What all were such will be included within the scope of this claim the conspicuous modification of described those skilled in the art.
Claims (5)
1. the mould of a pulverulent product, comprise the internal mold and the external mold that cooperatively interact, it is characterized in that: described external mold is made up of outer patrix and outer counterdie, is equipped with cavity on outer patrix and the outer counterdie, and the inwall of the inwall of outer patrix and outer counterdie complements each other to form an external mold step.
2. the mould of pulverulent product according to claim 1, it is characterized in that: the cross sectional shape of described outer patrix inwall is similar to the cross sectional shape of outer counterdie inwall, and the girth of outer counterdie inwall is less than the girth of outer patrix inwall.
3. the mould of pulverulent product according to claim 1 and 2 is characterized in that: described outer patrix and outer counterdie are coaxial setting.
4. the mould of pulverulent product according to claim 3 is characterized in that: offer the internal mold step in the internal mold upper end.
5. the mould of pulverulent product according to claim 4, it is characterized in that: the step surface of described internal mold step is equal with the end face of outer counterdie.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920141482U CN201371597Y (en) | 2009-01-16 | 2009-01-16 | Forming mold of powder products |
| PCT/CN2009/001419 WO2010081279A1 (en) | 2009-01-16 | 2009-12-10 | Shaping mold for powder article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920141482U CN201371597Y (en) | 2009-01-16 | 2009-01-16 | Forming mold of powder products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201371597Y true CN201371597Y (en) | 2009-12-30 |
Family
ID=41497680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920141482U Expired - Fee Related CN201371597Y (en) | 2009-01-16 | 2009-01-16 | Forming mold of powder products |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201371597Y (en) |
| WO (1) | WO2010081279A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043829A (en) * | 2014-06-29 | 2014-09-17 | 江苏新旭磁电科技有限公司 | Press forming die for neodymium iron boron permanent magnet rotors |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3842583B2 (en) * | 2001-04-27 | 2006-11-08 | 日立粉末冶金株式会社 | Molding method of green compact |
| US7235201B2 (en) * | 2004-12-20 | 2007-06-26 | Borgwarner Inc. | Split die and method for production of compacted powder metal parts |
-
2009
- 2009-01-16 CN CN200920141482U patent/CN201371597Y/en not_active Expired - Fee Related
- 2009-12-10 WO PCT/CN2009/001419 patent/WO2010081279A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043829A (en) * | 2014-06-29 | 2014-09-17 | 江苏新旭磁电科技有限公司 | Press forming die for neodymium iron boron permanent magnet rotors |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010081279A1 (en) | 2010-07-22 |
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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: 20091230 Termination date: 20180116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |