CN212555183U - Press forming device for cup-shaped powder product - Google Patents
Press forming device for cup-shaped powder product Download PDFInfo
- Publication number
- CN212555183U CN212555183U CN202020197288.7U CN202020197288U CN212555183U CN 212555183 U CN212555183 U CN 212555183U CN 202020197288 U CN202020197288 U CN 202020197288U CN 212555183 U CN212555183 U CN 212555183U
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- plunger
- cup
- cylinder
- piston
- base
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- 239000000843 powder Substances 0.000 title claims abstract description 53
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 238000013016 damping Methods 0.000 claims abstract description 21
- 239000003921 oil Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 238000000748 compression moulding Methods 0.000 claims 2
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 229910052903 pyrophyllite Inorganic materials 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
A press-molding apparatus for a cup-shaped powder product, comprising: the device comprises a double one-way damping valve, a plunger cylinder, a piston, a hydraulic cylinder, a base, an ejector rod, a core rod, an upper pressure head, a skip car, a female die and a lower pressure head. The plunger cylinder is arranged at the tail part of the ejection plunger, and the lower end of the plunger cylinder is connected with the double one-way damping valve so as to replace a complex die required by the traditional powder pressing and a cup-shaped powder product pressing device which can only be realized by a composite hydraulic cylinder. The advanced device for pressing the cup-shaped product by using the powder has the advantages of high automation degree, energy conservation, high speed and simple and compact structure.
Description
Technical Field
The utility model relates to a powder metallurgy field a cup type powder product's press forming device, in particular to diamond, cubic boron nitride and compound superhard materials high pressure synthesis required pyrophyllite cup, magnesium oxide cup, dolomite cup, graphite cup etc. special cup-shaped powder product's press forming device.
Background
An auxiliary pneumatic device and a hydraulic device are generally adopted in a pressing forming device of a common cup-shaped powder product so as to realize the multi-action function of a pyrophyllite powder pressing hydraulic machine; meanwhile, a hydraulic overload device is adopted to adjust the maximum pressure applied to a punch of the hydraulic press so as to prevent overload caused by over-full filling of pyrophyllite. As the pressing of cup-shaped powder products belongs to blind hole pressing, the problem of inconsistent charging space exists in the pressing process. The blind hole is pressed with two material loading spaces, one is a hole wall and the other is a hole bottom. In order to achieve a bore wall loading (loading with only one space), the core rod must be raised a certain distance in advance to meet the loading requirements. Meanwhile, the pressing of the traditional cup-shaped pyrophyllite product can be realized only by a complex die and a press with a composite hydraulic cylinder. Due to the reasons, the manufacturing cost is high, the energy consumption in production is high, the working efficiency is low, the pressing yield is low, and the popularization and the use of the die are limited to a certain extent.
In order to solve the problems, the main structure of the device is that a plunger cylinder and a plunger are designed at the tail part of a piston rod of a hydraulic cylinder for ejecting the powder product, a double one-way damping valve is installed at the bottom of the plunger cylinder, and the device also comprises a discharging base of a mould part and a cylindrical ejector rod used for adjusting a mould core rod.
The utility model relates to a novel powder goods press forming device, the purpose uses simple and easy device just can reach the powder blind hole part that the hydraulic press of original mould that needs complicacy and area compound jar could the suppression to simplified hydraulic equipment and mould frock, guaranteed the charge space uniformity requirement, saved the investment, reduced the energy consumption, and improved the press forming yield of cup-shaped powder goods.
SUMMERY OF THE UTILITY MODEL
The utility model provides a press forming device of cup-shaped powder goods has realized the optimal design of powder blind hole part suppression equipment. Specifically, preferably, the apparatus includes: the device comprises a double one-way damping valve, a plunger cylinder, a piston, a hydraulic cylinder, a core rod, an ejector rod, a base, an upper pressure head, a storage bin, a female die and a lower pressure head. The inner side surface of the female die is provided with the core rod, and the lower end of the core rod is connected with the ejector rod; the lower pressure head wraps the core rod and the ejector rod and is fixed on the base; the piston ejecting the hydraulic cylinder is connected with the lower end of the base, the tail part of the piston ejecting the hydraulic cylinder is provided with the plunger and the plunger cylinder, the upper end of the plunger is connected with the lower end of the ejector rod, and the lower end of the plunger cylinder is connected with the double one-way damping valve. The beneficial effects are as follows: the simple powder pressing cup-shaped product device can realize powder pressing molding production of blind hole parts which can be realized by a complex die and a hydraulic press with a composite hydraulic cylinder.
The ejector rod is connected with the base through an adjusting screw. The beneficial effects are as follows: the cup-shaped product can bear certain pressing force and can adjust the powder filling height.
And the piston of the ejection hydraulic cylinder is connected with the lower end of the base, the upper end of the piston is provided with a plunger cylinder, a plunger is arranged in the plunger cylinder, and the upper end of the plunger is connected with the lower end of the ejector rod. The beneficial effects are as follows: the floating height of the plunger is controlled by the oil pressure of hydraulic oil in the cylinder below the plunger. A straight hole is formed in the center of the base, and a mandril is preassembled; the upper end and the side surface of the base are provided with through inclined material leaking holes. The beneficial effects are as follows: when the powder is loaded, the redundant powder leaks from the gap between the lower pressing head and the female die and the core rod and is discharged through the material leaking hole, so that the consistency of the cup-shaped powder product formed by pressing is ensured, and the production of the product is stable.
The upper end of the piston is provided with a plunger cylinder, a plunger is arranged in the plunger cylinder, and the plunger is connected with a mandril on the base. The beneficial effects are as follows: when in charging, the floating plunger type cylinder can push the core rod to move to the highest position through the ejector rod, so that the space of the material cavity on the wall of the blind hole is continuously increased, and the cup-shaped powder product is fully charged.
The piston is arranged at the lower end of the double one-way damping valve. The double one-way damping valve consists of a throttle valve and a one-way valve and is connected with an upper oil cavity of the hydraulic cylinder. The beneficial effects are as follows: when the cup-shaped powder product is pressed, the action of a safety valve is realized, the movement is stable, and the normal and stable work of the plunger cylinder is ensured.
The technical effects of the utility model:
the utility model discloses the press forming device to cup-shaped powder goods of tradition manufacturing cost is expensive, the energy consumption is big in the production, work efficiency is low, and suppresses the defect that the yield is low, adopts two one-way damping valve structures to construct the press forming device of cup-shaped powder goods to replace the required complicated mould of traditional powder suppression and take the cup-shaped powder goods suppression device that compound pneumatic cylinder could realize.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the utility model adopts a specific matching mode, and utilizes the mutual matching of the structures such as the piston, the base, the plunger cylinder, the plunger, the ejector rod, the hydraulic cylinder and the like, so that the plunger cylinder floats by utilizing the oil pressure of the return hydraulic oil in the upper cavity of the hydraulic cylinder when the piston is returned; when in charging, the floating plunger type cylinder can push the core rod to move to the highest position through the ejector rod, so that the space of the material cavity on the wall of the blind hole is continuously increased, and the forming device is sufficient in charging and uniform in material distribution.
(2) The utility model discloses a two one-way damping valve structures, through cooperating with the plunger case, make the pneumatic cylinder plunger case not move when ejecting goods, the check valve just can be opened under certain pressure to pressure oil during only the return stroke, gets into the plunger case through the damping choke valve, along with the increase of hydraulic oil, the pressure that the piston received constantly risees, causes the plunger to emerge. Meanwhile, when the cup-shaped product is pressed, the one-way valve connected in parallel keeps a certain back pressure to support the mold core rod to move downwards, so that the movement of the mold core rod is stable, the effect of a safety valve is achieved, and the normal and stable work of the plunger cylinder is ensured.
Cup-shaped powder product's press forming device have degree of automation height, energy consumption economize, fast, simple structure compact's advantage, its application prospect is extensive.
Drawings
FIG. 1 is a front view of a cup-shaped powder article press forming apparatus;
FIG. 2 is a schematic view of a dual one-way damping valve and a plunger cylinder;
FIG. 3 is a schematic charge diagram of a powder compaction hydraulic press;
FIG. 4 is a schematic pressing diagram of a powder pressing hydraulic press;
FIG. 5 is a schematic diagram of a powder compaction hydraulic press ejecting a cup-shaped article;
FIG. 6 is a schematic diagram of a powder compaction hydraulic press cup-shaped article de-molding;
in the figure, 1-core rod, 2-ejector rod, 3-adjusting screw, 4-material leaking hole, 5-base, 6-plunger, 7-plunger cylinder, 8-double one-way damping valve, 9-piston, 10-hydraulic cylinder, 11-throttle valve, 12-one-way valve, 13-upper pressure head, 14-bin, 15-material powder, 16-female die, 17-lower pressure head, 18-lower pressure head end cover and 19-cup-shaped product.
Detailed Description
As shown in fig. 1 and 2, the press forming device for cup-shaped powder products comprises a double one-way damping valve 8, a plunger 6, a plunger cylinder 7, a piston 9, a hydraulic cylinder 10, a core rod 1, a mandril 2, a base 5, an upper press head 13, a skip 14, a female die 16 and a lower press head 17; a core rod 1 is arranged on the inner side surface of the female die 16, and the lower end of the core rod 1 is connected with the ejector rod 2; the lower pressure head 17 wraps the core rod 1 and the ejector rod 2 and is fixed on the base 5; a piston 9 is arranged in the hydraulic cylinder 10 in a matched mode, the piston 9 is connected with the lower end of the base 5, a plunger 6 and a plunger cylinder 7 are designed at the tail of the piston 9, the upper end of the plunger 6 is connected with the lower end of the ejector rod 2, and the lower end of the plunger cylinder 7 is connected with the double one-way damping valve 8.
In a preferred embodiment, the top bar 2 is connected to the base 5 by an adjusting screw 3.
In a preferred embodiment, the base 5 is screwed to the piston 9 of the cylinder 10.
As a preferred embodiment, a straight hole is formed in the center of the base 5, and a top rod 2 is preassembled; the upper end and the side surface of the base 5 are provided with through inclined material leaking holes 4.
In a preferred embodiment, a plunger cylinder 7 is arranged at the upper end of the piston 9, a plunger 6 is arranged in the plunger cylinder 7, and the plunger 6 is connected with the ejector rod 2 on the base 5.
In a preferred embodiment, the plunger cylinder 7 is returned to the rod chamber of the hydraulic cylinder through an oil conduit via a double one-way damper valve 8.
As a preferred embodiment, the double one-way damping valve 8 is arranged inside the piston 9, the double one-way damping valve 8 comprises a throttle valve 11 and two one-way valves 12, the oil paths of the two one-way valves 12 are opposite and are arranged in parallel through pipelines, the throttle valve 11 is located on the oil path where one of the one-way valves 12 is located, return hydraulic oil in the upper cavity of the hydraulic cylinder flows to the plunger cylinder 7 through the one-way valve 12 and the throttle valve 11 on one side, and a main pipeline of intersection of the parallel pipelines is connected with the upper cavity of the hydraulic cylinder 10 through an oil inlet P.
In a preferred embodiment, the skip car 14 is connected with the female die 16, the inner wall of the skip car 14 is in stepped arrangement and matched with the female die 16 in structure, and the cavity of the skip car 14 is matched with the upper pressure head 13 in structure. During specific operation, the ejector rod 2 is used for adjusting the height of the material cavity, and the height of the ejector rod is controlled by the adjusting screw 3; the core rod 1 is used for fixing the inner diameter of the cup wall of the cup-shaped powder product 19, and the ejector rod is smaller than the outer diameter of the core rod by 0.3-0.5 mm.
As shown in fig. 3 to 6, a method for press-forming a cup-shaped powder product is implemented by the following steps:
(1) charging, (2) pressing, (3) ejecting, and (4) returning.
Specifically, (1) charging: the powder 15 is uniformly arranged in the skip 14. When a skip car 14 is used for loading powder 15, the floating plunger 6 pushes the die core rod 1 to gradually reach the highest position through the ejector rod 2, so that the cavity space of the wall of the blind hole is also increased continuously, sufficient loading is realized, and redundant powder leaked from a gap between the lower pressing head 17 and the female die 16 and the core rod 1 is discharged through the leakage hole 4.
(2) Pressing: in pressing the cup-shaped article 19 (as shown in fig. 4), the mandrel 1 is subjected to blind hole bottom pressure, begins to compress back, and retracts while the walls of the hole are also being pressed.
(3) And (3) ejecting: and (3) introducing pressure oil into a rodless cavity of the hydraulic cylinder 10, enabling the piston 9 to move upwards, ejecting and demoulding, enabling the plunger type cylinder not to act when the hydraulic cylinder ejects the product, ejecting the pressed cup-shaped product 19, separating the product from the mould, completing the pressing of the blind hole product, and demolding.
(4) And (3) return stroke: when pressure oil is introduced into a rod cavity of the hydraulic cylinder 10, the piston 9 moves downwards, and the die is reset. When the plunger piston moves back, hydraulic oil in a rod cavity of the hydraulic cylinder 10 is supplied into a floating plunger cylinder 7 from an oil inlet P through a double one-way damping valve 8 formed by connecting a one-way valve 11 and a throttle valve 12 in series, the pressure of the hydraulic cylinder is continuously increased along with the continuous increase of the oil, when the pressure is increased to a certain value, the plunger piston 6 is pushed to move upwards, and meanwhile, when a cup-shaped product is pressed, the one-way valve connected in parallel with the hydraulic cylinder keeps a certain back pressure to support a mold core rod to move downwards, so that the movement of the mold core rod is stable, the action of a safety valve is realized, and the normal. While the plunger 6 moves upwards, the mandrel of the base 5 is pushed to push the adjusting screw 3 so as to drive the mandril 2 to send the core rod 1 to the highest position, and the skip 14 is used for loading the powder 15 so as to prepare for pressing the next cup-shaped product 19.
Claims (8)
1. The utility model provides a press forming device of cup-shaped powder goods, has realized the optimal design of powder blind hole part pressing equipment which characterized in that, a press forming device of cup-shaped powder goods includes: the device comprises a double one-way damping valve (8), a plunger (6), a plunger cylinder (7), a piston (9), a hydraulic cylinder (10), a core rod (1), a push rod (2), a base (5), an upper pressure head (13), a skip car (14), a female die (16) and a lower pressure head (17); a core rod (1) is arranged on the inner side surface of the female die (16), and the lower end of the core rod (1) is connected with the ejector rod (2); the lower pressure head (17) wraps the core rod (1) and the ejector rod (2) and is fixed on the base (5); the hydraulic cylinder (10) is internally provided with a piston (9) in a matching manner, the piston (9) is connected with the lower end of the base (5), a plunger (6) and a plunger cylinder (7) are designed at the tail part of the piston (9), the upper end of the plunger (6) is connected with the lower end of the ejector rod (2), and the lower end of the plunger cylinder (7) is connected with the double one-way damping valve (8).
2. A press-forming device for cup-shaped powder products according to claim 1, characterised in that the ejector pin (2) is connected to the base (5) by means of an adjusting screw (3).
3. A press-forming device for cup-shaped powder products according to claim 1, characterised in that the base (5) is screwed to the piston (9) of the hydraulic cylinder (10).
4. The apparatus for compression-molding a cup-shaped powder product according to claim 1, wherein the base (5) is provided with a straight hole at the center and is pre-fitted with a ram (2); the upper end and the side surface of the base (5) are provided with through inclined material leaking holes (4).
5. A press-forming device for cup-shaped powder products according to claim 1, characterized in that the upper end of the piston (9) is provided with a plunger cylinder (7), the plunger (6) is arranged in the plunger cylinder (7), and the plunger (6) is connected with the ejector rod (2) on the base (5).
6. A press-forming device for cup-shaped powder products according to claim 5, characterized in that the plunger cylinder (7) is returned to the rod chamber of the cylinder through an oil conduit via a double one-way damper valve (8).
7. The press-forming device for cup-shaped powder products according to claim 1, wherein the double one-way damping valve (8) is arranged inside the piston (9), the double one-way damping valve (8) comprises a throttle valve (11) and two one-way valves (12), the oil paths of the two one-way valves (12) are opposite, the throttle valve (11) is arranged in parallel through pipelines, the throttle valve (11) is located on the oil path of one of the one-way valves (12), the return hydraulic oil in the upper cavity of the hydraulic cylinder flows to the plunger cylinder (7) through the one-way valve (12) and the throttle valve (11), and the main pipe of the intersection of the parallel pipelines is connected with the upper cavity of the hydraulic cylinder (10) through the oil inlet P.
8. Device for the compression moulding of powder articles in the form of cups according to claim 1, characterised in that said trolley (14) is connected to a female die (16), the cavity of the trolley (14) being stepped to match the configuration of the female die (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020197288.7U CN212555183U (en) | 2020-02-24 | 2020-02-24 | Press forming device for cup-shaped powder product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020197288.7U CN212555183U (en) | 2020-02-24 | 2020-02-24 | Press forming device for cup-shaped powder product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212555183U true CN212555183U (en) | 2021-02-19 |
Family
ID=74619448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020197288.7U Withdrawn - After Issue CN212555183U (en) | 2020-02-24 | 2020-02-24 | Press forming device for cup-shaped powder product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212555183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823632A (en) * | 2020-02-24 | 2020-10-27 | 中国矿业大学(北京) | Press forming device and press forming method for cup-shaped powder product |
-
2020
- 2020-02-24 CN CN202020197288.7U patent/CN212555183U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823632A (en) * | 2020-02-24 | 2020-10-27 | 中国矿业大学(北京) | Press forming device and press forming method for cup-shaped powder product |
| CN111823632B (en) * | 2020-02-24 | 2024-07-19 | 中国矿业大学(北京) | Compression molding device and compression molding method for cup-shaped powder product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210219 Effective date of abandoning: 20240719 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210219 Effective date of abandoning: 20240719 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |