CN202715826U - Magnetic field hydraulic machine vacuumizing forming device - Google Patents
Magnetic field hydraulic machine vacuumizing forming device Download PDFInfo
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- CN202715826U CN202715826U CN 201220405386 CN201220405386U CN202715826U CN 202715826 U CN202715826 U CN 202715826U CN 201220405386 CN201220405386 CN 201220405386 CN 201220405386 U CN201220405386 U CN 201220405386U CN 202715826 U CN202715826 U CN 202715826U
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Abstract
The utility model discloses a magnetic field hydraulic machine vacuumizing forming device. The magnetic field hydraulic machine vacuumizing forming device comprises an upper pressure head, a lower pressure head and a mold. The mold is provided with a mold cavity, and the lower pressure head is arranged inside the mold cavity in penetrating mode. The magnetic field hydraulic machine vacuumizing forming device further comprises a vacuumizing device. A cover is arranged on the upper pressure head, and the vacuumizing device is communicated with the inside of the cover through a first through hole. When the upper pressure head presses downward, the lower end face of the cover and the upper end face of the mold are sealed. The vacuumizing device is adopted to vacuumize the mold cavity, gas among powder is greatly reduced, and quality of magnetic material powder after being suppressed is guaranteed. In addition, the magnetic field hydraulic machine vacuumizing forming device only carries out sealing between the mold cavity and the upper pressure head, and therefore vacuumized space is greatly reduced.
Description
Technical field
The utility model relates to the Magnetic field press apparatus field, more specifically, relates to a kind of Magnetic field press and vacuumizes shaped device.
Background technology
Sintered NdFeB and SmCo magnetic material manufacturing generally all adopt Magnetic field press that the powder of magnetic material is carried out pressure forming at home.In order to improve the performance of compacted products, General Requirements in 3 μ m to 5 μ m scopes, and requires the size distribution of powder to concentrate through material powder that airflow milling is made, and the granular size of powder is wanted evenly.But such powder apparent density is little, and exhaust performance is poor, and very high to the mould and die accuracy requirement, (stamping and mold cavity gap are little of micron order).When compacting, easily cause existing between the powder particle gas in time not discharge, easily chipping and layering during the demoulding.
When therefore suppressing, need to discharge as much as possible and have gas between the powder particle, such as a Chinese utility model, Granted publication number is " CN201342484Y ", name is called " Magnetic field press of a kind of powder forming unit and this powder forming unit of use ", disclose a kind of powder forming unit and use the Magnetic field press of this powder forming unit, this shaped device includes mould, seaming chuck and push-down head, in use, the relative mould that is arranged in the push-down head surface of seaming chuck, its improvement is that seaming chuck comprises hard main body and cushion.This utility model has solved for the too small problem that exists gas in time not discharge between the powder particle of easily causing in slit between traditional Magnetic field press stamping and the mold cavity.But this structure during compacting, still has the portion gas savings between powder, the quality of finished product after the impact compacting.
Summary of the invention
For the deficiencies in the prior art, provide a kind of magnetic field hydraulic press to vacuumize shaped device, this device applies in the Magnetic field press, can effectively discharge the gas between the powder, greatly improves the quality of product.
The utility model is achieved by the following technical programs: a kind of magnetic field hydraulic press vacuumizes shaped device, comprise seaming chuck, push-down head and mould, described mould has mold cavity, described push-down head is located in the mold cavity, also comprise a vacuum extractor, be provided with cover on the described seaming chuck, described vacuum extractor is connected with cover inside by the first through hole, when seaming chuck pressed down, the lower surface of cover and the upper surface of mould formed sealing.
In the technique scheme, described mould is arranged on the mould bases, is provided with the fourth hole that passes through for push-down head on the described mould bases, offers the second through hole that is communicated with mold cavity on the sidewall of described mould bases, and described the second through hole links to each other with vacuum extractor.
In the technique scheme, be provided with groove at described end face flange, in described groove, be provided with the first sealing ring.
In the technique scheme, described vacuum extractor comprises vacuum tank, vavuum pump, the first pipeline and second pipe, described vavuum pump and vacuum tank are by the first pipeline communication, be communicated with second pipe on the described vacuum tank, described the first through hole and the second through hole are communicated with second pipe, be communicated with the 3rd pipeline at described second pipe, be respectively arranged with the first valve and the second valve of controlling its open and close at described the 3rd pipeline and second pipe.
In the technique scheme, be provided with vacuum pressure sensor on the described second pipe.
A kind of magnetic field hydraulic press vacuumizes the forming method of shaped device, comprise the steps: 1) the startup vavuum pump, vacuum tank is evacuated down to the pressure vacuum gauge lower limit, vavuum pump stops automatically, when vacuum tank pressure vacuum gauge indication vacuum reaches the upper limit, vavuum pump is opened automatically, and this moment, the first valve and the second valve were in closed condition; 2) start reinforced button, so that push-down head enters mold cavity, this moment, push-down head was positioned at mold cavity lower end position (this position is determined by position sensor), added powder in mold cavity; 3) behind the adding powder, moved cross beam is descending on the hydraulic press of magnetic field, so that the corrugated pipe end plane flange is pushed down the mould upper surface, the first sealing ring is so that seal between corrugated pipe end plane flange and the mould upper surface, such mold cavity, bellows, the inner chamber of mould bases forms an airtight space, seaming chuck leaves the about 3 ~ 5mm distance of mold cavity, the position is confirmed by hydraulic cylinder position sensor on the hydraulic press of magnetic field, this moment, the hydraulic press electromagnet that magnetizes in magnetic field began powder is magnetized, open simultaneously the second valve to mold cavity, the confined space that the inner chamber of bellows and mould bases forms vacuumizes, vacuum pressure sensor shows that vacuum reaches setting value and the Magnetic field press electromagnet that magnetizes and magnetizes after electric current reaches setting value, moved cross beam is descending and lower moved cross beam is up so that seaming chuck and push-down head are suppressed powder on the hydraulic press of magnetic field, so that powder is made pressed compact, Magnetic field press keeps magnetizing magnetic field in the pressing process, and bellows is compressed; 4) compacting stops pressed compact being magnetized after finishing, and then pressed compact is carried out pressurize in 1 ~ 5 second and simultaneously pressed compact is demagnetized, and eliminates pressed compact magnetic; Close at last the second valve open the first valve and be filled with nitrogen or argon gas, so that mold cavity reaches atmospheric pressure, namely vacuum pressure sensor reaches 0Pa ~ 0.2Pa(relative pressure) time, close the first valve, inflation finishes; 5) after pressurize demagnetization and inflation finish, the upper moved cross beam of magnetic field hydraulic press and lower moved cross beam are simultaneously up, seaming chuck keeps the pressure of technique initialization to carry out the pressurize demoulding to pressed compact, when seaming chuck is moved upwards up to just by mold cavity, the complete break away from moulds die cavity of pressed compact, this at present moved cross beam stop up, after upper moved cross beam continues a up end movement, the operator will just can take pressed compact away, can continue next working cycles.
The utility model compared with prior art, have following beneficial effect: 1) the utility model adopts vacuum extractor that mold cavity is vacuumized, thereby greatly reduce the gas between the powder, guaranteed the quality after the compacting of magnetic material powder, more mainly in addition be, the utility model has reduced the space that vacuumizes greatly only to sealing between mold cavity and the seaming chuck.
2) the utility model hermetically-sealed construction is simple, only has a movable sealing, and good sealing effect is easy to maintenance.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing at A place among Fig. 1.
Fig. 3 is the structural representation of the utility model vacuum extractor.
Fig. 4 is the structural representation of Magnetic field press body.
Fig. 5 is use state reference map of the present utility model.
Fig. 6 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment the utility model is described in further detail: be illustrated in figure 4 as Magnetic field press body 500 of the present utility model, described Magnetic field press body 500 comprises base 26, in base 26, be fixed with lower hydraulic cylinder 25, be fixed with chassis base 23 in base 26 upper ends, also comprise two lower guide posts 24, described lower guide post 24 is by base 26 and chassis base 23, and can in base 26 and chassis base 23, slide up and down, end at lower guide post 24 is fixedly installed lower moved cross beam 21, be fixed with undershoot rebound 20 at described lower moved cross beam 21, on undershoot rebound 20, be fixed with successively undershoot extension bar 17 and push-down head 16, the lower piston rod 250 of described lower hydraulic cylinder 25 is fixedly connected on the moved cross beam 21, like this, moving up and down of the lower piston rod 250 of lower hydraulic cylinder 25 just can drive moving up and down of push-down head 16, be fixedly installed mould bases 19 in the upper end of described chassis base 23, be fixed with mould 14 in described mould bases 19 upper ends by pressing plate 15 and screw 150, described mould 14 has mold cavity 140, sidewall at mould bases 19 offers the second through hole 9 that is communicated with mold cavity 140, be provided with the electromagnet 30 that magnetizes that magnetic field is provided around the mold cavity 140, process mold cavity 140 during push-down head 16 upper and lower displacement.
Described mold cavity 140 tops are provided with seaming chuck 11, also comprise upper punch extension bar 10, upper punch rebound 5, upper moved cross beam 3, described seaming chuck 11, upper punch extension bar 10, upper punch rebound 5, upper moved cross beam 3 connect successively, upper moved cross beam 3 is fixed on the upper piston rod of guide post 2 and upper hydraulic cylinder 1, like this, can be driven by upper hydraulic cylinder the upper and lower displacement of seaming chuck 11, and when seaming chuck 11 moves up and down, pass through mold cavity 140.Outside described seaming chuck 11, be arranged with cover 8, preferably, described cover 8 comprises bellows 80 and is fixed in the end face flange 12 of bellows 80 1 ends, offer third through-hole 121 at described end face flange 12, described seaming chuck 11 can pass through third through-hole 121, offer the first through hole 6 at upper punch rebound 5, described the first through hole 6 and bellows 80 internal communication, certain described cover 8 is not limited to said structure, only need to when seaming chuck presses down, can guarantee that cover can get final product with mold cavity 140 sealings.
Referring to Fig. 2, be provided with groove 120 on the described end face flange 12, in groove 120, be provided with the first sealing ring 4, when seaming chuck 11 pressed down, underrun first sealing ring 4 of end face flange 12 and the upper surface of mold cavity 140 formed reliable sealing.
Referring to Fig. 3, Figure 3 shows that the schematic diagram of the utility model vacuum extractor, described vacuum extractor comprises vacuum tank 40, vavuum pump 43, the first pipeline 42 and second pipe 39, described vavuum pump 43 and vacuum tank 40 are communicated with by the first pipeline 42, be provided with pressure vacuum gauge 41 on the described vacuum tank 40, be communicated with second pipe 39 on the described vacuum tank 40, be communicated with the 3rd pipeline 37 at described second pipe 39, be respectively arranged with the first valve 36 and the second valve 38 of controlling its open and close at described the 3rd pipeline 37 and second pipe 39, described the first valve 36 and the second valve 38 are magnetic valve, are provided with vacuum pressure sensor 34 at described second pipe 39.
Referring to Fig. 1, Fig. 1 is structural representation of the present utility model, by the cooperation of second pipe 39 and the second through hole 9, is connected with flexible pipe 29 at the first through hole 6, described flexible pipe 29 1 ends are communicated with second pipe 39, and vacuum extractor and Magnetic field press body 500 are coupled together.
The below makes a brief description use procedure of the present utility model: preparation: start vavuum pump 43, vacuum tank 40 is evacuated down to pressure vacuum gauge 41 lower limits, vavuum pump 43 stops automatically, when vacuum tank 40 pressure vacuum gauges indication vacuum reaches the upper limit, vavuum pump 43 is opened automatically, and this moment, the first valve 36 and the second valve 38 were in closed condition.
Start reinforced button, the lower moved cross beam 21 of hydraulic press is descending, drives push-down head and enters mold cavity 140, and this moment, push-down head was positioned at mold cavity 140 lower end positions, and this position is confirmed by the position sensor (accompanying drawing does not mark) of hydraulic cylinder under the hydraulic press of magnetic field.
After mold cavity 140 has added powder 44, moved cross beam 3 is descending on the hydraulic press of magnetic field, so that bellows 80 end face flanges 12 are pushed down the mould upper surface, the first sealing ring 4 is so that seal between corrugated pipe end plane flange and the mould upper surface, mold cavity 140 like this, bellows 80, the inner chamber of mould bases 19 forms an airtight space, seaming chuck 11 leaves mold cavity 140 about 3 ~ 5mm distances, the position is confirmed by hydraulic cylinder position sensor on the hydraulic press of magnetic field, this moment, the hydraulic press electromagnet 30 that magnetizes in magnetic field began powder is magnetized, open simultaneously 38 pairs of mold cavities 140 of the second valve, the confined space that the inner chamber of bellows 80 and mould bases 19 forms vacuumizes, vacuum pressure sensor 34 shows that vacuum reach setting value and the Magnetic field press electromagnet 30 that magnetizes and magnetize after electric current reaches setting value, moved cross beam is descending and lower moved cross beam is up so that 16 pairs of powders 44 of seaming chuck 11 and push-down head are suppressed on the hydraulic press of magnetic field, so that powder forms pressed compact, Magnetic field press keeps magnetizing magnetic field in the pressing process, and bellows 80 is compressed.
Compacting stops pressed compact being magnetized after finishing, and then pressed compact is carried out pressurize in 1 ~ 5 second and simultaneously pressed compact is demagnetized, and eliminates pressed compact magnetic; Close at last the second valve 38 and open the first valve 36 and be filled with nitrogen or argon gas, so that mold cavity 140 reaches atmospheric pressure, when namely vacuum pressure sensor 34 reaches 0～0.2Pa (relative pressure), close the first valve 36, inflation finishes.
After pressurize demagnetization and inflation finish, the upper moved cross beam of magnetic field hydraulic press and lower moved cross beam are simultaneously up, seaming chuck keeps the pressure of technique initialization to carry out the pressurize demoulding to pressed compact, when seaming chuck is moved upwards up to just by mold cavity, the complete break away from moulds die cavity of pressed compact, this at present moved cross beam stop up, after upper moved cross beam continues a up end movement, the operator will just can take pressed compact away, can continue next working cycles.
The utility model pressing under magnetic field hydraulic press vacuumizes shaped device and adopts in the course of the work the PLC programme-control, automatically finishes the moulding that vacuumizes of magnetic material powder.
Claims (6)
1. a magnetic field hydraulic press vacuumizes shaped device, comprise seaming chuck (11), push-down head (16) and mould (14), described mould (14) has mold cavity (140), described push-down head (16) is located in the mold cavity (140), it is characterized in that: also comprise a vacuum extractor, be provided with cover (8) on the described seaming chuck (11), described vacuum extractor is connected with cover (8) inside by the first through hole (6), seaming chuck (11) is when pressing down, and the upper surface of the lower surface of cover (8) and mould (14) forms sealing.
2. a kind of magnetic field according to claim 1 hydraulic press vacuumizes shaped device, it is characterized in that: described mould (14) is arranged on the mould bases (19), be provided with the fourth hole (800) that passes through for push-down head (11) on the described mould bases (19), offer the second through hole (9) that is communicated with mold cavity (140) on the sidewall of described mould bases (19), described the second through hole (9) links to each other with vacuum extractor.
3. a kind of magnetic field according to claim 1 hydraulic press vacuumizes shaped device, it is characterized in that: described cover (8) comprises the end face flange (12) that is arranged at the outer bellows (80) of seaming chuck (11) and is fixed in bellows (80) one ends, offer third through-hole (121) at described end face flange (12), described seaming chuck (11) is by third through-hole (121), during compacting, end face flange (12) forms sealing with the upper surface of mould (14).
4. a kind of magnetic field according to claim 2 hydraulic press vacuumizes shaped device, it is characterized in that: be provided with groove (120) at described end face flange (12), be provided with the first sealing ring (4) in described groove (120).
5. a kind of magnetic field according to claim 2 hydraulic press vacuumizes shaped device, it is characterized in that: described vacuum extractor comprises vacuum tank (40), vavuum pump (43), the first pipeline (42) and second pipe (39), be provided with the pressure vacuum gauge (41) of indication vacuum tank (40) pressure on the described vacuum tank (40), described vavuum pump (43) and vacuum tank (40) are communicated with by the first pipeline (42), be communicated with second pipe (39) on the described vacuum tank (40), described the first through hole (6) and the second through hole (9) are communicated with second pipe (39), be communicated with the 3rd pipeline (37) at described second pipe (39), be respectively arranged with the first valve (36) and the second valve (38) of controlling its open and close at described the 3rd pipeline (37) and second pipe (39).
6. a kind of magnetic field according to claim 4 hydraulic press vacuumizes shaped device, it is characterized in that: be provided with vacuum pressure sensor (34) on the described second pipe (39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405386 CN202715826U (en) | 2012-08-16 | 2012-08-16 | Magnetic field hydraulic machine vacuumizing forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405386 CN202715826U (en) | 2012-08-16 | 2012-08-16 | Magnetic field hydraulic machine vacuumizing forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202715826U true CN202715826U (en) | 2013-02-06 |
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ID=47617664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220405386 Expired - Fee Related CN202715826U (en) | 2012-08-16 | 2012-08-16 | Magnetic field hydraulic machine vacuumizing forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202715826U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773477A (en) * | 2012-08-16 | 2012-11-14 | 俞红霞 | Vacuumizing forming device and method of magnetic field hydraulic machine |
| CN116944497A (en) * | 2023-09-18 | 2023-10-27 | 泰州市华诚钨钼制品有限公司 | Tungsten molybdenum alloy piece shaping pressing equipment |
-
2012
- 2012-08-16 CN CN 201220405386 patent/CN202715826U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773477A (en) * | 2012-08-16 | 2012-11-14 | 俞红霞 | Vacuumizing forming device and method of magnetic field hydraulic machine |
| CN116944497A (en) * | 2023-09-18 | 2023-10-27 | 泰州市华诚钨钼制品有限公司 | Tungsten molybdenum alloy piece shaping pressing equipment |
| CN116944497B (en) * | 2023-09-18 | 2023-12-08 | 泰州市华诚钨钼制品有限公司 | Tungsten molybdenum alloy piece shaping pressing equipment |
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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: 20130206 Termination date: 20160816 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |