CN207358160U - Powder metallurgy pressing die - Google Patents

Powder metallurgy pressing die Download PDF

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Publication number
CN207358160U
CN207358160U CN201721035206.3U CN201721035206U CN207358160U CN 207358160 U CN207358160 U CN 207358160U CN 201721035206 U CN201721035206 U CN 201721035206U CN 207358160 U CN207358160 U CN 207358160U
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China
Prior art keywords
upper mold
lower die
former
powder
die
Prior art date
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CN201721035206.3U
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Chinese (zh)
Inventor
赵志华
丁霞
彭景光
金文杰
吴增强
姜晓圆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI AUTOMOBILE POWDER METALLURGY CO Ltd
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SHANGHAI AUTOMOBILE POWDER METALLURGY CO Ltd
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Priority to CN201721035206.3U priority Critical patent/CN207358160U/en
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Abstract

It the utility model is related to powder metallurgical technology, disclose a kind of powder metallurgy pressing die, including former, the top of the former is upper mold, the upper mold includes interior upper mold and outer upper mold, the interior upper mold is located in the outer upper mold, transmission section is formed between the interior upper mold and outer upper mold, the lower section of the former is lower die, the lower die includes interior lower die and outer lower die, it is pressed compact between upper die and lower die in the former, horizontal exhausting-gas hole is provided with the outer upper mold, the exhausting-gas hole connects the transmission section and the external world.The utility model increases the design of exhausting-gas hole on the outside of outer upper mold, solves powder in the upper powder accumulation phenomenon for being punched through dead band, ensure that the geometric tolerance of product, reduce school mould number, extend the service life of mould.

Description

Powder metallurgy pressing die
Technical field
Powder metallurgical technology is the utility model is related to, particularly a kind of powder metallurgy pressing die.
Background technology
PM technique by material science and metal-forming techniques it is perfect combine, become the height having a large capacity and a wide range Effect, section material, it is energy saving less, without cutting New Processing, be widely used in automobile, agricultural machinery, textile machine, household electrical appliances production In the main computer boxes such as product, office machinery.
Referring to attached drawing 1, in part pressing process, powder is subjected to 5 to 6 tons every square centimeter of pressure, is gradually adding During pressure, there is sub-fraction powder to be entered by the fit clearance between stamping in the transmission section of stamping, every time compacting The powder that stroke runs away to transmission section be it is more micro, 0.5% generally not over single part dosage, but by thousands of time More powder will be accumulated after compacting circulation, the powder into bottom punch transmission section can further fall on stamping method due to gravity It is blue compacting nearby to be had an impact, but the powder for entering upper punch transmission section can be deposited in outer upper punch inner side and it is interior on In transmission section on the outside of stamping, it can unevenly enter in pressing process in stamping fit clearance, seriously affect the dress of mould With precision, the geometric tolerance of product is influenced indirectly, upper mold need to be assembled again, otherwise the geometric tolerance of part can be overproof, Die surface can produce to be pulled caused by card powder, and powder metallurgy is generally used for producing in enormous quantities, and single produces 50000 Be it is universal, repeatedly reinstall that upper mold is serious to have impact on production efficiency, increase the cost of compacting.
Utility model content
The purpose of this utility model is that solve the above problems, there is provided a kind of powder metallurgy pressing die, effectively emptying are saturating The powder of dead band accumulation.
The technical scheme adopted by the utility model is that:
A kind of powder metallurgy pressing die, including former, it is characterized in that, the top of the former is upper mold, the upper mold Including interior upper mold and outer upper mold, the interior upper mold is located in the outer upper mold, and transmission is formed between the interior upper mold and outer upper mold Section, the lower section of the former are lower die, and the lower die includes interior lower die and outer lower die, between the upper die and lower die in the former For pressed compact, horizontal exhausting-gas hole is provided with the outer upper mold, the exhausting-gas hole connects the transmission section and the external world.
Further, the hole leads to uniformly distributed on the excircle of the outer upper mold.
Further, the quantity of the lower die is more than 2.
Further, the pressed compact is vacuum pump rotor.
The beneficial effects of the utility model are:
Increase the design of exhausting-gas hole on the outside of outer upper mold, solve powder in the upper powder accumulation phenomenon for being punched through dead band, guarantor The geometric tolerance of product has been demonstrate,proved, has reduced school mould number, has extended the service life of mould.
Brief description of the drawings
Attached drawing 1 is pressing die powder accumulation schematic diagram in the prior art;
Attached drawing 2 is the utility model mould pressing position structure diagram;
Attached drawing 3 moves powder positional structure schematic diagram for the utility model mould;
Attached drawing 4 arranges powder schematic diagram for exhausting-gas hole.
Numbering in attached drawing is respectively:
Upper mold in 1.;2. outer upper mold;
3. former;4. it is molded pressed compact;
Lower die in 5.;6. outer lower die;
7. transmission section;8. exhausting-gas hole.
Embodiment
Elaborate below in conjunction with the accompanying drawings to the embodiment of the utility model powder metallurgy pressing die.
Referring to attached drawing 2, powder metallurgy pressing die includes interior upper mold 1, outer upper mold 2, former 3, interior lower die 5, outer lower die 6; Wherein, interior upper mold 1, outer upper mold 2, outer lower die 6 and interior lower die 5 are arranged in former 3, and interior upper mold 1 is arranged in outer upper mold 2, interior Transmission section 7 is formed between upper mold 1 and outer upper mold 2, exhausting-gas hole 8 is designed with outer upper mold 2;Exhausting-gas hole 8 connects transmission section 7 and outer Boundary.Pressed compact 4 is molded between interior upper mold 2, outer upper mold 1, interior lower die 5, outer lower die 6.
It is powder for molding between interior upper mold 2, outer upper mold 1, interior lower die 5, outer lower die 6 when moving powder position referring to attached drawing 3.
Referring to attached drawing 4, when mould is from when to move powder position transition be pressing position(It is changed into attached drawing 2 from attached drawing 3), outer upper mold The cavity of transmission section 7 between 1 and interior upper mold 2 diminishes, and air can carry powder and be discharged from exhausting-gas hole 8.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art Art personnel, on the premise of the utility model principle is not departed from, can also make some improvements and modifications, these improvements and modifications Also it should be regarded as the scope of protection of the utility model.

Claims (4)

1. a kind of powder metallurgy pressing die, including former, it is characterised in that:The top of the former is upper mold, the upper mold Including interior upper mold and outer upper mold, the interior upper mold is located in the outer upper mold, and transmission is formed between the interior upper mold and outer upper mold Section, the lower section of the former are lower die, and the lower die includes interior lower die and outer lower die, between the upper die and lower die in the former For pressed compact, horizontal exhausting-gas hole is provided with the outer upper mold, the exhausting-gas hole connects the transmission section and the external world.
2. powder metallurgy pressing die according to claim 1, it is characterised in that:The exhausting-gas hole is in the outer upper mold It is uniformly distributed on excircle.
3. powder metallurgy pressing die according to claim 1 or 2, it is characterised in that:The quantity of the lower die is more than 2 It is a.
4. powder metallurgy pressing die according to claim 1 or 2, it is characterised in that:The pressed compact is vacuum pump rotor.
CN201721035206.3U 2017-08-18 2017-08-18 Powder metallurgy pressing die Active CN207358160U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721035206.3U CN207358160U (en) 2017-08-18 2017-08-18 Powder metallurgy pressing die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721035206.3U CN207358160U (en) 2017-08-18 2017-08-18 Powder metallurgy pressing die

Publications (1)

Publication Number Publication Date
CN207358160U true CN207358160U (en) 2018-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721035206.3U Active CN207358160U (en) 2017-08-18 2017-08-18 Powder metallurgy pressing die

Country Status (1)

Country Link
CN (1) CN207358160U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113333745A (en) * 2021-05-18 2021-09-03 中国工程物理研究院材料研究所 Powder compacting die with atmosphere protection function and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113333745A (en) * 2021-05-18 2021-09-03 中国工程物理研究院材料研究所 Powder compacting die with atmosphere protection function and method

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