CN114393872B - Female die holding force lifting mechanism for powder forming - Google Patents
Female die holding force lifting mechanism for powder forming Download PDFInfo
- Publication number
- CN114393872B CN114393872B CN202210009281.1A CN202210009281A CN114393872B CN 114393872 B CN114393872 B CN 114393872B CN 202210009281 A CN202210009281 A CN 202210009281A CN 114393872 B CN114393872 B CN 114393872B
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- China
- Prior art keywords
- cylinder
- holding
- oil
- female die
- die
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- 239000000843 powder Substances 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims description 49
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/14—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds on a movable carrier other than a turntable or a rotating drum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention relates to a female die holding force lifting mechanism for powder forming, which comprises a frame, wherein a stripper plate is arranged in the frame and is connected with a cylinder bracket; the left side and the right side of the cylinder bracket are respectively provided with a filling cylinder; the stripper plate is connected with a female die through a component; the cylinder bracket is used for driving the female die to ascend; the front side and the rear side of each filling cylinder are respectively provided with a retaining cylinder; a support block is fixed on the cylinder bracket; the holding cylinder is used for enabling the top end of the piston rod to be in contact with the supporting block after hydraulic oil is input, so that the holding cylinder is used as a passive supporting piece to hold the height position of the supporting block, the height position of the female die is further held, and the purpose of improving the holding force of the female die is achieved. According to the die holding force lifting mechanism for powder forming, a mode of cooperative work of the air cylinder and the liquid cylinder is adopted, rapid filling of the die is realized by utilizing air pressure, lifting of the die holding force is realized by utilizing hydraulic pressure, and the best pressing performance and pressing efficiency are realized with the lowest manufacturing cost.
Description
Technical Field
The invention relates to the field of powder forming equipment, in particular to a female die holding force lifting mechanism for powder forming.
Background
In the field of powder forming equipment, the female die is a part of a whole set of dies used in the powder forming process and is used for controlling the filling amount of powder; the holding force is a force which can overcome the friction force or extrusion force of the female die and keep the position of the female die unchanged; the die filling of the existing powder forming machine mainly adopts the following three modes:
firstly, adopt the cylinder to realize the die filling, the filling rate is fast. However, the gas is easy to compress, and after the female die is subjected to friction, the female die is easy to float downwards, so that the pressing quality is affected.
And secondly, filling the female die by adopting an oil cylinder. The liquid has incompressibility, so the holding force of the female die is larger, the pressing performance is stable, but the flow rate of the hydraulic pressure is about 1/6 of the flow rate of the compressed air, so the filling speed of the female die is greatly reduced, and the production efficiency is influenced.
Third, a servo mechanism is employed. The servo motor is adopted to drive the screw rod to rotate, so that the female die is driven to move. The die holding force of the servo press is large, but the software control system is complex, the electric control system is expensive and is not easy to maintain; thereby resulting in a relatively high overall cost of the device.
Therefore, how to realize the rapid filling of the female die, improve the holding power of the female die and effectively reduce the manufacturing cost is a problem to be solved at present.
Disclosure of Invention
In order to solve the technical problems, the invention provides a die holding force lifting mechanism for powder forming, which adopts a mode of cooperative work of an air cylinder and a liquid cylinder, realizes rapid filling of a die by utilizing air pressure, realizes lifting of the die holding force by utilizing hydraulic pressure, and realizes the best pressing performance and pressing efficiency with the lowest manufacturing cost.
The technical scheme adopted for solving the technical problems is as follows: a female die holding force lifting mechanism for powder forming comprises a frame, wherein a stripper plate is arranged in the frame and is connected with a cylinder bracket; the left side and the right side of the cylinder bracket are respectively provided with a filling cylinder; the stripper plate is connected with a female die through a component; the cylinder bracket is used for driving the female die to ascend by using the stripper plate and the assembly under the jacking action of the filling cylinder; the front side and the rear side of each filling cylinder are respectively provided with a retaining cylinder; a support block is fixed on the cylinder bracket; the holding cylinder is used for enabling the top end of the piston rod to be in contact with the supporting block after hydraulic oil is input, so that the holding cylinder is used as a passive supporting piece to hold the height position of the supporting block, further the height position of the female die is held, and the purpose of improving the holding force of the female die is achieved.
Further, the assembly comprises a lower sliding column connected with the stripper plate, an adjusting screw sleeve connected with the lower sliding column and a lower T-shaped block connected with the adjusting screw sleeve; the lower T-shaped block is connected with the female die.
Further, a top end of a piston rod of the holding cylinder is further provided with a plug, and the top end is contacted with the supporting block through the plug.
Further, the hydraulic source of the holding cylinder is an energy accumulator; hydraulic oil is filled in the energy accumulator; the accumulator supplies hydraulic oil to the holding cylinder through an oil passage.
Further, the filling cylinder is connected with a compressed air source; the compressed air source is also connected with the energy accumulator and is used for pressing hydraulic oil of the energy accumulator into the holding cylinder through compressed air.
Furthermore, an electromagnetic overflow valve and a one-way valve are also sequentially arranged on the oil path between the energy accumulator and the holding cylinder.
Further, the oil outlet end of the energy accumulator is also connected with a first oil way block, and an internal oil way of the first oil way block is communicated with the oil inlet end of the electromagnetic overflow valve.
Further, a pressure gauge is further installed on the first oil path block.
Further, a hydraulic oil quantity indicator is further arranged on the outer side of the energy accumulator.
Further, the bottom side of the holding cylinder is provided with a second oil way block, the second oil way block is respectively arranged at the left side and the right side, the second oil way block at each side corresponds to two holding cylinders at the same side, and oil ways between the one-way valve and the four holding cylinders are communicated and used for enabling the four holding cylinders to provide consistent holding force.
The invention has the advantages that: according to the die holding force lifting mechanism for powder forming, a mode of cooperative work of the air cylinder and the liquid cylinder is adopted, rapid filling of the die is realized by utilizing air pressure, lifting of the die holding force is realized by utilizing hydraulic pressure, and the best pressing performance and pressing efficiency are realized with the lowest manufacturing cost.
Drawings
FIG. 1 is a schematic view showing the internal structure of a first angle of a die holding force lifting mechanism for powder molding according to an embodiment;
FIG. 2 is a schematic view showing the internal structure of a second angle of a die holding force lifting mechanism for powder molding according to an embodiment;
FIG. 3 is a schematic view showing the internal structure of a third angle of a die holding force lifting mechanism for powder molding according to an embodiment;
FIG. 4 is a schematic view of a fourth angle of a die retention lifting mechanism for powder forming according to an embodiment;
the hydraulic oil filling device comprises a 1-filling cylinder, a 2-holding cylinder, a 3-cylinder bracket, a 4-supporting block, a 5-stripper plate, a 6-lower sliding column, a 7-adjusting screw sleeve, an 8-lower T-shaped block, a 9-energy accumulator, a 10-electromagnetic overflow valve, an 11-pressure gauge, a 12-first oil path block, a 13-hydraulic oil quantity indicator, a 14-one-way valve, a 15-plug, a 16-frame, a 17-second oil path block and an 18-oil path.
Detailed Description
The present invention will be further described in detail with reference to the drawings and examples, which are only for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Examples
Referring to fig. 1 to 4, the present embodiment provides a die holding force lifting mechanism for powder molding, comprising a frame 16, wherein a stripper plate 5 is installed in the frame 16, and the stripper plate 5 is connected with a cylinder bracket 3; the left side and the right side of the cylinder bracket 3 are respectively provided with a filling cylinder 1; the stripper plate 5 is connected with a female die through a component; the cylinder bracket 3 is used for driving the female die to ascend by using the stripper plate 5 and the components under the jacking action of the filling cylinder 1; the front side and the rear side of each filling cylinder 1 are respectively provided with a holding cylinder 2; a support block 4 is fixed on the cylinder bracket 3; the holding cylinder 2 is used for enabling the top end of the piston rod to be in contact with the supporting block 4 after hydraulic oil is input, so that the holding cylinder is used as a passive supporting piece to hold the height position of the supporting block, further the height position of the female die is held, and the purpose of improving the holding force of the female die is achieved.
In a die holding force lifting mechanism for powder molding of the embodiment, the assembly comprises a lower slide column 6 connected with a stripper plate 5, an adjusting screw sleeve 7 connected with the lower slide column 6, and a lower T-shaped block 8 connected with the adjusting screw sleeve 7; the lower T-shaped block 8 is connected with the female die.
In the die holding force lifting mechanism for powder molding of the embodiment, the top end of the piston rod of the holding cylinder 2 is also provided with a plug 15, and the plug 15 is in contact with the supporting block 4.
In the die holding force lifting mechanism for powder molding of the embodiment, a hydraulic source of the holding cylinder 2 is an energy accumulator 9; hydraulic oil is filled in the energy accumulator 9; the accumulator 9 supplies hydraulic oil to the holding cylinder 2 through an oil passage 18.
In the die holding force lifting mechanism for powder molding of the embodiment, the filling cylinder 1 is connected with a compressed air source; the compressed air source is also connected to the accumulator 9 for pressing the hydraulic oil of the accumulator 9 into the holding cylinder 2 by means of compressed air.
In the die holding force lifting mechanism for powder molding of this embodiment, the electromagnetic relief valve 10 and the one-way valve 14 are further disposed on the oil path 18 between the accumulator 9 and the holding cylinder 2 in sequence.
In the die holding force lifting mechanism for powder molding of this embodiment, the oil outlet end of the accumulator 9 is further connected with a first oil path block 12, and an internal oil path of the first oil path block 12 is communicated with the oil inlet end of the electromagnetic spill valve 10.
In the die holding force lifting mechanism for powder molding of the embodiment, the pressure gauge 11 is further mounted on the first oil path block 12.
In the die holding force lifting mechanism for powder forming of the embodiment, the hydraulic oil quantity indicator 13 is further arranged on the outer side of the energy accumulator, so that the liquid level of hydraulic oil in the energy accumulator can be conveniently observed, and the hydraulic oil can be timely supplemented when the liquid level is insufficient.
In the die holding force lifting mechanism for powder molding of the embodiment, the bottom side of the holding cylinder 2 is provided with a second oil path block 17, the second oil path block 17 is respectively arranged at the left side and the right side, the second oil path block 17 at each side corresponds to two holding cylinders 2 at the same side, and the oil paths between the check valve 14 and the four holding cylinders 2 are communicated, so that the four holding cylinders 2 provide uniform holding force.
The invention has the advantages that: according to the die holding force lifting mechanism for powder forming, a mode of cooperative work of the air cylinder and the liquid cylinder is adopted, rapid filling of the die is realized by utilizing air pressure, lifting of the die holding force is realized by utilizing hydraulic pressure, and the best pressing performance and pressing efficiency are realized with the lowest manufacturing cost.
When the female die holding force lifting mechanism for powder forming is used, a piston rod of a filling cylinder stretches out, and a lifting force is transmitted to a female die through a cylinder bracket, a stripper plate, a lower sliding column, an adjusting screw sleeve and a lower T-shaped block to drive the female die to rise, so that a feeding action is realized; when the filling cylinder drives the female die to ascend, compressed air is also introduced into the energy accumulator, hydraulic oil in the energy accumulator is extruded, and the hydraulic oil sequentially passes through the first oil way block, the electromagnetic overflow valve and the one-way valve by utilizing an oil way and then enters the retaining cylinder; after hydraulic oil is pressed into the holding cylinder, a piston rod of the driving cylinder extends out, the top end of a movable span rod of the holding cylinder is propped against the supporting block through the propping head, the supporting block transmits a lifting force to the cylinder bracket, and at the moment, the lifting force of the holding cylinder and the lifting force of the filling cylinder jointly support the female die. When the female die is subjected to downward pressure, the female die transmits the received force to the filling cylinder and the holding cylinder through the lower T-shaped block, the adjusting screw sleeve, the lower sliding column, the stripper plate and the cylinder bracket; after the holding cylinder is stressed, the pressure in the cylinder rises, the pressure value can be fed back to the pressure gauge, hydraulic oil is always sealed in the holding cylinder before the pressure in the holding cylinder reaches the pressure set by the electromagnetic overflow valve, and the deformation of the hydraulic oil under pressure is far smaller than that of air, so that the holding force of a female die can be effectively improved under the influence of the small deformation of the hydraulic oil under pressure of the holding cylinder; when the pressing is finished, the female die is pulled down to release the die through other mechanisms (demolding levers), but before the process, an outlet is provided for hydraulic oil in the holding oil cylinder through the electromagnetic overflow valve, and in the process of pulling down the female die, the hydraulic oil in the holding oil cylinder can be rapidly discharged through the electromagnetic overflow valve, air is filled in the filling cylinder, and the hydraulic oil can be rapidly discharged, so that the demolding of the female die can be realized.
According to the die holding force lifting mechanism for powder forming, a mode of cooperative work of the air cylinder and the liquid cylinder is adopted, rapid filling of the die is realized by utilizing air pressure, lifting of the die holding force is realized by utilizing hydraulic pressure, and the best pressing performance and pressing efficiency are realized with the lowest manufacturing cost; the hydraulic oil pressure can be kept in the oil cylinder by utilizing the compressed air source, and the hydraulic oil is sealed in the oil cylinder by utilizing the one-way valve, so that a piston rod of the oil cylinder can hardly retract, and the force born by the female die is actually transmitted to the frame through the oil cylinder, thereby greatly improving the holding force of the female die.
The above embodiments should not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.
Claims (3)
1. A die retention lifting mechanism for powder forming, characterized by: the device comprises a frame, wherein a stripper plate is arranged in the frame and is connected with a cylinder bracket; the left side and the right side of the cylinder bracket are respectively provided with a filling cylinder; the stripper plate is connected with a female die through a component; the cylinder bracket is used for driving the female die to ascend by using the stripper plate and the assembly under the jacking action of the filling cylinder; the front side and the rear side of each filling cylinder are respectively provided with a retaining cylinder; a support block is fixed on the cylinder bracket; the holding cylinder is used for enabling the top end of the piston rod to be in contact with the supporting block after hydraulic oil is input, so that the holding cylinder is used as a passive supporting piece to hold the height position of the supporting block, the height position of the female die is further held, and the purpose of improving the holding force of the female die is achieved; the assembly comprises a lower slide column connected with the stripper plate, an adjusting screw sleeve connected with the lower slide column and a lower T-shaped block connected with the adjusting screw sleeve; the lower T-shaped block is connected with the female die; a top end of a piston rod of the holding oil cylinder is also provided with a top head, and the top head is contacted with the supporting block; the hydraulic source of the holding cylinder is an energy accumulator; hydraulic oil is filled in the energy accumulator; the energy accumulator supplies hydraulic oil to the holding cylinder through an oil way; the filling cylinder is connected with a compressed air source; the compressed air source is also connected with the energy accumulator and is used for pressing hydraulic oil of the energy accumulator into the holding cylinder through compressed air; an electromagnetic overflow valve and a one-way valve are also sequentially arranged on the oil path between the energy accumulator and the holding cylinder; the oil outlet end of the energy accumulator is also connected with a first oil way block, and an internal oil way of the first oil way block is communicated with the oil inlet end of the electromagnetic overflow valve; the bottom side of the holding cylinder is provided with a second oil way block, the second oil way block is respectively arranged at the left side and the right side, the second oil way block at each side corresponds to two holding cylinders at the same side, and oil ways between the one-way valve and the four holding cylinders are communicated and used for enabling the four holding cylinders to provide consistent holding force.
2. A die holding force lifting mechanism for powder forming according to claim 1, wherein: and a pressure gauge is further arranged on the first oil way block.
3. A die holding force lifting mechanism for powder forming according to claim 1 or 2, characterized in that: and a hydraulic oil quantity indicator is further arranged on the outer side of the energy accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210009281.1A CN114393872B (en) | 2022-01-06 | 2022-01-06 | Female die holding force lifting mechanism for powder forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210009281.1A CN114393872B (en) | 2022-01-06 | 2022-01-06 | Female die holding force lifting mechanism for powder forming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114393872A CN114393872A (en) | 2022-04-26 |
| CN114393872B true CN114393872B (en) | 2024-03-22 |
Family
ID=81229424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210009281.1A Active CN114393872B (en) | 2022-01-06 | 2022-01-06 | Female die holding force lifting mechanism for powder forming |
Country Status (1)
| Country | Link |
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| CN (1) | CN114393872B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208324U (en) * | 1987-05-20 | 1987-12-26 | 上海合金材料总厂 | Loading and unloading device for powder moulding press |
| JP2001334398A (en) * | 2000-05-26 | 2001-12-04 | Hitachi Powdered Metals Co Ltd | Method for filling powder and device for feeding powder of compacting press |
| CN101323181A (en) * | 2007-06-12 | 2008-12-17 | 朱锦忠 | Multiple-layer powder feeder of powder formation press |
| CN103963339A (en) * | 2014-04-21 | 2014-08-06 | 苏光宝 | Die pressing mechanism of powder forming machine |
| CN109353060A (en) * | 2018-11-06 | 2019-02-19 | 南通力友液压机制造有限公司 | Fro hydraulic driving machinery formula powder former |
| CN109663913A (en) * | 2018-10-30 | 2019-04-23 | 南京东田精密机械有限公司 | 16 tons of powder rapid shaping press |
| CN210062139U (en) * | 2018-12-31 | 2020-02-14 | 扬州市海力精密机械制造有限公司 | Female die balance hydraulic control device of ultra-large powder forming machine |
-
2022
- 2022-01-06 CN CN202210009281.1A patent/CN114393872B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208324U (en) * | 1987-05-20 | 1987-12-26 | 上海合金材料总厂 | Loading and unloading device for powder moulding press |
| JP2001334398A (en) * | 2000-05-26 | 2001-12-04 | Hitachi Powdered Metals Co Ltd | Method for filling powder and device for feeding powder of compacting press |
| CN101323181A (en) * | 2007-06-12 | 2008-12-17 | 朱锦忠 | Multiple-layer powder feeder of powder formation press |
| CN103963339A (en) * | 2014-04-21 | 2014-08-06 | 苏光宝 | Die pressing mechanism of powder forming machine |
| CN109663913A (en) * | 2018-10-30 | 2019-04-23 | 南京东田精密机械有限公司 | 16 tons of powder rapid shaping press |
| CN109353060A (en) * | 2018-11-06 | 2019-02-19 | 南通力友液压机制造有限公司 | Fro hydraulic driving machinery formula powder former |
| CN210062139U (en) * | 2018-12-31 | 2020-02-14 | 扬州市海力精密机械制造有限公司 | Female die balance hydraulic control device of ultra-large powder forming machine |
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| Publication number | Publication date |
|---|---|
| CN114393872A (en) | 2022-04-26 |
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