CN114953577A - Novel powder hydraulic press - Google Patents
Novel powder hydraulic press Download PDFInfo
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- CN114953577A CN114953577A CN202210591255.4A CN202210591255A CN114953577A CN 114953577 A CN114953577 A CN 114953577A CN 202210591255 A CN202210591255 A CN 202210591255A CN 114953577 A CN114953577 A CN 114953577A
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- 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
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- 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
- B30B11/027—Particular press methods or systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/161—Control arrangements for fluid-driven presses controlling the ram speed and ram pressure, e.g. fast approach speed at low pressure, low pressing speed at high pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/166—Electrical control arrangements
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Abstract
The invention discloses a novel powder hydraulic machine, which belongs to the technical field of hydraulic machines and comprises a frame, a feeding mechanism and a powder die in the feeding mechanism, wherein a conveying pipe of the feeding mechanism is arranged on the side surface of the powder die and used for conveying powder raw materials into the powder die; the mould is arranged in the mould frame, and the hydraulic component in the frame is used for pressing powder and driving the mould frame to move at low speed in the same direction with the powder. A bypass oil way is additionally arranged between a rod cavity of the main oil cylinder and a rod cavity of the middle-female floating cylinder, a main cylinder pressing reversing valve is arranged on the bypass oil way, the reversing between the quick descending of the main oil cylinder and the pressing of powder is realized, meanwhile, hydraulic oil in the rod cavity of the main oil cylinder is evenly distributed into the rod cavities of the two middle-female floating cylinders, the pressure and the movement speed of the main oil cylinder and the middle-female floating cylinders are further adjusted, and the yield of products is greatly improved.
Description
Technical Field
The invention belongs to the technical field of hydraulic presses, and particularly relates to a novel powder hydraulic press.
Background
The powder hydraulic press is a device for solidifying and forming a powdery medium after the powdery medium reaches a certain density through high-pressure pressing, and the selection of the process in the pressing process directly determines the yield of the pressed product. Because the powder medium can not be reused after being judged to be a defective product after being pressed and formed once, the overall processing cost is high due to too high defective product rate, the material is wasted, the profit of a company is reduced, and how to better improve the yield of the product is always the direction of pursuit and thinking of various powder press manufacturing enterprises.
The main pressing processes in the market at present include the following two types:
the first is that a main cylinder drives a pressure head die to perform unidirectional pressing forming from top to bottom, and a central cylinder and a middle-female floating cylinder float together with the pressure head of the main cylinder die in the pressing process (as shown in figure 5); the second is that the main cylinder drives the pressing head die to move downwards, and simultaneously the powder supporting mechanism moves upwards under the thrust of the upper jacking oil cylinder, and the upper and the lower parts are simultaneously extruded and formed (as shown in fig. 6).
In the two process modes, the schematic diagram of powder pressing and forming is shown in fig. 7, the powder on the upper surface moves downwards along with the pressure head of the main cylinder die in the pressing process, the outer die of the powder is kept still in a static state, so that friction force exists in the outer edge die in the pressing process, and the friction force is a main factor causing defective products, for example, the schematic diagram of powder distribution in fig. 7, the density of powder pressing in the area close to the pressure head of the die and the outer contour of the die is proportional to the stroke of powder pressing in the forming process of the powder, so that the density of the pressed product is inconsistent.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a novel powder hydraulic machine aiming at the defects of the prior art, which can effectively improve the pressing quality of products and the yield of the products.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a novel powder hydraulic press comprises a frame, a feeding mechanism and a powder die inside the feeding mechanism, wherein a conveying pipe of the feeding mechanism is arranged on the side surface of the powder die and used for conveying powder raw materials into the powder die; a hydraulic assembly for pressing powder is arranged in the frame; the die is arranged in the die frame, and the hydraulic assembly is used for pressing powder and driving the die frame to move at low speed in the same direction with the powder.
Preferably, the hydraulic assembly comprises a hydraulic oil circuit, a master cylinder and a middle-female floating cylinder arranged on two sides of the die frame, the tail end of a piston rod of the middle-female floating cylinder is connected with the die frame, the top of the master cylinder is provided with a quick cylinder, the quick cylinder is embedded in the piston rod of the master cylinder, and the tail end of the piston rod of the master cylinder is provided with a die pressing head for pressing powder;
the hydraulic oil way comprises an oil pump, a main oil cylinder oil inlet pipeline and an auxiliary oil way communicated with the middle-female floating cylinder, the main oil cylinder oil inlet pipeline is provided with a shunt pipeline connected with an upper oil cavity of the main oil cylinder, and a rod cavity of the main oil cylinder is connected with a rod cavity of the middle-female floating cylinder through a bypass oil way; a main cylinder reversing valve is arranged on the main cylinder oil inlet pipeline, a main cylinder speed regulating electromagnetic valve 3 and a return pipe communicated with an oil tank are arranged on the branch pipeline, and a one-way valve is arranged on the return pipe; and a main cylinder pressing reversing valve 5 is arranged on the bypass oil path, the main cylinder pressing reversing valve 5 is communicated with the oil tank through a return pipeline, and a first supporting valve is arranged on the return pipeline.
Preferably, the auxiliary oil path comprises a first oil path and a second oil path, the first oil path is connected with a rod cavity of the middle-female floating cylinder through a parallel branch, the second oil path is connected with a rodless cavity of the middle-female floating cylinder through a parallel branch, the first oil path and the second oil path are both connected with the oil pump and the oil tank through a floating cylinder reversing valve, and the second oil path is further provided with a second supporting valve for supporting a piston rod of the middle-female floating cylinder not to fall.
Preferably, the master cylinder pressing reversing valve is a two-position three-way electromagnetic reversing valve.
Preferably, the first support valve and the second support valve are both one-way sequence valves.
Preferably, the master cylinder reversing valve is an O-shaped three-position four-way reversing valve, and the floating cylinder reversing valve is a P-shaped three-position four-way reversing valve.
Preferably, the master cylinder speed regulating electromagnetic valve is a normally closed two-position two-way fluid valve.
Preferably, the annular cross section of the rod cavity of the master cylinder is equal to the annular cross section of the rod cavity of the middle female floating cylinder.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the invention increases the bypass oil path between the rod cavity of the master cylinder and the rod cavity of the middle-female floating cylinder, and the main cylinder pressing reversing valve is arranged on the bypass oil path, thereby realizing the reversing between the functions of fast descending of the master cylinder and powder pressing, and meanwhile, evenly distributing the hydraulic oil in the rod cavity of the master cylinder into the rod cavities of the two middle-female floating cylinders, realizing the adjustment of the pressure and the movement speed of the master cylinder and the middle-female floating cylinder, further realizing that the synchronous movement speed of the middle-female floating cylinder can be always kept equal to the downward movement speed 1/2 of the master cylinder without other adjustments no matter the movement speed of the master cylinder is increased or decreased, and greatly improving the yield of powder forming.
Drawings
FIG. 1 is a schematic structural diagram of a novel powder hydraulic machine provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of the oil path flow direction of the novel powder hydraulic machine in the process of rapid descending of the main oil cylinder before pressing in the embodiment of the invention;
FIG. 3 is a schematic diagram of the oil path flow in the pressing process of the novel powder hydraulic machine in the embodiment of the invention;
FIG. 4 is a schematic structural outline of one embodiment of the present invention;
FIG. 5 is a schematic diagram of a first prior art pressing process;
FIG. 6 is a schematic diagram of a second prior art pressing process;
FIG. 7 is a schematic view of the powder distribution during compaction of the powder of FIGS. 5 and 6;
in the figure: 01-a frame, 02-a material conveying pipe of a feeding mechanism, 03-a mould frame, 04-a mould pressure head and 05 guide posts; 1-quick oil cylinder, 2-main oil cylinder, 3-main cylinder speed regulating electromagnetic valve, 4-one-way valve, 5-main cylinder pressing reversing valve, 6-powder, 71-first middle-negative floating cylinder, 72-second middle-negative floating cylinder, 8-second supporting valve, 9-floating cylinder reversing valve, 10-main cylinder reversing valve, 11-first supporting valve, 12-high pressure oil inlet pipe, 13-low pressure oil return pipe, 14-oil pump, 15-oil tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly and completely understood, the technical solutions in the embodiments of the present invention are described below with reference to the accompanying drawings and specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 4, the novel powder hydraulic machine provided by the embodiment of the present invention includes a frame 01, a feeding mechanism, and a powder mold inside the feeding mechanism, wherein a feeding pipe 02 of the feeding mechanism is disposed on a side surface of the powder mold and is used for feeding a powder raw material into the powder mold; a hydraulic assembly for pressing powder is arranged in the frame 01; the die is arranged in the die frame 03, and the hydraulic assembly is used for pressing powder and driving the die frame 03 to move at low speed in the same direction with the powder. The powder raw material is fed into a pressing die through a feeding mechanism, and a main oil cylinder pushes a die pressing head to press the powder and moves along with a middle-female floating cylinder so that the powder is gradually formed in the die. The moving speed of the die frame is designed to be lower than the powder pressing speed, and the specific speed proportion can be designed according to the actual situation. Of course, the master cylinder is not limited to the position shown in fig. 4, and may be disposed above the die holder, so that the powder pressing direction is consistent with the moving direction of the die holder, and the specific position may be arranged according to the actual situation.
In a specific embodiment of the present invention, as shown in fig. 1, the hydraulic assembly includes a hydraulic oil path, a main oil cylinder 2, and middle-female floating cylinders disposed at two sides of a mold frame 03, the middle-female floating cylinders at two sides are a first middle-female floating cylinder 71 and a second middle-female floating cylinder 72, respectively, a piston rod end of the middle-female floating cylinder is connected to the mold frame 03, a quick oil cylinder 1 is disposed at a top of the main oil cylinder 2, the quick oil cylinder 1 is embedded in the piston rod of the main oil cylinder 2, and a mold press head 04 for pressing powder is disposed at a piston rod end of the main oil cylinder 2. The hydraulic oil way comprises an oil pump 14, a main oil cylinder oil inlet pipeline and an auxiliary oil way communicated with the middle-female floating cylinder, a shunt pipeline used for being connected with an upper oil cavity of the main oil cylinder 2 is arranged on the main oil cylinder oil inlet pipeline, and a rod cavity of the main oil cylinder 2 is connected with a rod cavity of the middle-female floating cylinder through a bypass oil way; a main cylinder reversing valve 10 is arranged on an oil inlet pipeline of the main oil cylinder, a main cylinder speed regulating electromagnetic valve 3 and a return pipe communicated with an oil tank are arranged on the branch pipeline, and a check valve 4 is arranged on the return pipe; the bypass oil path is provided with a main cylinder pressing reversing valve 5, the main cylinder pressing reversing valve 5 is communicated with an oil tank 15 through a return pipeline, and the return pipeline is provided with a first supporting valve 11 for supporting a main oil cylinder piston rod to keep still.
As a preferable scheme, as shown in fig. 1, the auxiliary oil path includes a first oil path and a second oil path, the first oil path is connected with a rod cavity of the first middle female floating cylinder 71 and a rod cavity of the second middle female floating cylinder 72 through parallel branches, the second oil path is connected with rodless cavities of the first middle female floating cylinder 71 and the second middle female floating cylinder 72 through parallel branches, the first oil path and the second oil path are both connected with the oil pump 14 and the oil tank 15 through floating cylinder reversing valves 9, and the second oil path is further provided with a second support valve 8 for supporting the piston rods of the first middle female floating cylinder 71 and the second middle female floating cylinder 72 from falling.
During specific manufacturing, the main cylinder speed regulating electromagnetic valve 3 is a normally closed two-position two-way fluid valve, the main cylinder pressing reversing valve 5 is a two-position three-way electromagnetic reversing valve, and the first supporting valve 11 and the second supporting valve 8 are both one-way sequence valves; the main cylinder reversing valve 10 is an O-shaped three-position four-way reversing valve, and the floating cylinder reversing valve 9 is a P-shaped three-position four-way reversing valve; the annular cross section of the rod cavity of the master cylinder 2 is equal to the annular cross section of the rod cavity of the first middle female floating cylinder 71 and the second middle female floating cylinder 72.
In view of the fact that the apparatus is often used to compact powder products of different media during actual use, the pressure requirements of different powder products and the speed requirements during forming are not consistent. If the movement speed of the oil cylinder is set by using the debugging valve to meet the requirement that the speed of the female floating oil cylinder in the outer contour reaches 1/2 of the pressure head speed of the main cylinder die, the operation is troublesome, the speed ratio between the main cylinder and the female floating oil cylinder is set by the debugging valve again every time the product is replaced, the speed regulation of the speed regulating valve cannot be 100 percent, the precision of the commonly used speed regulating degree can only be about 10 to 15 percent, and the scheme is complicated and is not ideal.
According to production tests and experience summary, when the powder 6 is pressed downwards by the die pressing head, the outer die of the powder also moves downwards along with the die pressing head of the master cylinder, but the movement speed of the female floating cylinder in the outer contour die of the powder is 1/2 of the movement speed of the die pressing head of the master cylinder all the time, the yield of powder forming is the highest.
The hydraulic schematic diagram of the invention is shown in figure 1; the whole hydraulic system is controlled by a hydraulic oil pump with large displacement, the main oil cylinder 2 is lowered and raised through a main cylinder reversing valve 10, the main oil cylinder 2 is quickly lowered and slowly pressed to switch oil paths through a main cylinder speed regulating electromagnetic valve 3, the main oil cylinder 2 and a middle and middle floating cylinder speed constant ratio oil path are switched through a main cylinder pressing reversing valve 5, and quick oil supplement and quick oil return during return stroke are realized through a hydraulic control one-way valve 4 when the main oil cylinder 2 is lowered. The first middle female floating cylinder 71 and the second middle female floating cylinder 72 realize the extension and retraction of the piston rod of the oil cylinder through the floating cylinder reversing valve 9, and when the floating cylinder reversing valve 9 does not work, the piston rod mechanism in the middle female floating cylinder is supported by the second supporting valve 8 and does not fall down.
The speed constant ratio accompanying distribution system between the main oil cylinder 2 and the middle and middle floating cylinders is realized through a hydraulic circuit control structure, and when the system is switched to a working pressure mode state, the hydraulic system always keeps 1/2 that the movement speed of the powder outer contour die is only the movement speed of the main oil cylinder 2 after being switched through an oil way. The following is a description of the specific working process of the present invention:
1. the main cylinder fast descending oil path is shown in fig. 2, wherein the solid arrow line in the figure is a high-pressure oil inlet pipe 12 for pushing the main cylinder to move by high-pressure oil, the hollow arrow line is a low-pressure oil return pipe 13, and the hydraulic oil returns to an oil tank 15. In the process, high-pressure oil enters the main oil cylinder quick oil cylinder 1 through the main cylinder reversing valve 10 to push the main oil cylinder 2 to descend quickly, and simultaneously enters the rodless cavity of the middle-female floating cylinder through the floating cylinder reversing valve 9 and the second support valve 8 to push the internal floating mechanism to move upwards to reach a preset height position.
2. The schematic diagram of the oil path switching and the work when the powder starts to be pressed is shown in fig. 3, the solid arrow line in the diagram is a high-pressure oil inlet pipe 12 for pushing the main oil cylinder to move by high-pressure oil, and the rodless cavity of the main oil cylinder 2 is a high-pressure cavity; the line with double-line arrows is a passive high-pressure oil way, and rod cavities of the main oil cylinder 2, the first middle female floating cylinder 71 and the second middle female floating cylinder 72 are all high-pressure cavities; the line with a single-line arrow indicates a low-pressure oil path of the second support valve 8, and the rodless cavities of the first middle female floating cylinder 71 and the second middle female floating cylinder 72 are low-pressure cavities; and the line with a hollow arrow indicates an oil return non-pressure oil way. The powder press forming oil path control is explained as follows:
high-pressure oil enters a rodless cavity of the master cylinder 2 and the quick cylinder 1 of the master cylinder plug cavity through the master cylinder reversing valve 10 and the master cylinder speed regulating electromagnetic valve 3 to push a piston of the master cylinder 2 and a mold pressure head to move downwards, and meanwhile, oil in a rod cavity of the master cylinder 2 in the downward movement process of the piston of the master cylinder 2 enters rod cavities of the first middle-negative floating cylinder 71 and the second middle-negative floating cylinder 72 through the oil port B and the master cylinder pressing reversing valve 5 to push pistons of the first middle-negative floating cylinder 71 and the second middle-negative floating cylinder 72 to move downwards synchronously.
Because the moving speed of the oil cylinder is related to the annular area of the oil cylinder and the volume of hydraulic oil flowing into the annular area, the yield of the powder medium 6 is highest when the synchronous moving speed of the female floating oil cylinder is equal to the downward moving speed 1/2 of the main oil cylinder 2 in the powder pressing process according to the test experience. In order to better ensure that the synchronous movement speed of the middle female floating oil cylinder is equal to 1/2 of the downward movement speed of the master oil cylinder, the annular area of the rod cavity of the middle female floating oil cylinder is designed to be equal to that of the master oil cylinder 2 according to the relation between the movement speed of the oil cylinder and the annular area of the piston in the hydraulic design process. Because the main oil cylinder 2 is only provided with one first middle-female floating cylinder 71 and two second middle-female floating cylinders 72, the hydraulic oil discharged in the downward movement process of the main oil cylinder 2 is switched by the main cylinder pressing reversing valve 5 to completely flow into the rod cavity areas of the first middle-female floating cylinder 71 and the second middle-female floating cylinder 72, and the oil liquid of the main oil cylinder 2 is uniformly distributed into the two oil cylinders with equal annular sections, so that the synchronous movement speed of the middle-female floating cylinders is equal to the downward movement speed 1/2 of the main oil cylinder, the synchronous movement speed of the middle-female floating cylinders can be always equal to the downward movement speed 1/2 of the main oil cylinder without other adjustments when the movement speed of the main oil cylinder is increased or decreased, and the yield of powder forming is greatly improved.
The independent actions of the oil cylinders can be not influenced by switching the main cylinder pressing reversing valve 5, and the automatic following operation of the synchronous movement speed of the middle-female floating oil cylinder which is equal to the downward movement speed 1/2 of the main oil cylinder can be realized by switching the main cylinder pressing reversing valve 5.
In conclusion, the powder pressing machine has the advantages of simple structure, convenience in manufacturing and good powder pressing quality, meanwhile, the powder pressing machine is convenient to reform on the basis of original equipment, and the reformation cost is low. By adopting the invention, the defective product rate of the product can be greatly reduced without additionally increasing labor cost and production efficiency by changing the traditional technical process forming scheme, thereby saving the cost and greatly improving the profit margin of enterprises.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A novel powder hydraulic machine is characterized in that: the powder feeding device comprises a rack, a feeding mechanism and a powder die arranged in the feeding mechanism, wherein a conveying pipe of the feeding mechanism is arranged on the side surface of the powder die and used for conveying powder raw materials into the powder die; a hydraulic assembly for pressing powder is arranged in the frame; the die is arranged in the die frame, and the hydraulic assembly is used for pressing powder and driving the die frame to move at low speed in the same direction with the powder.
2. The new powder hydraulic machine according to claim 1, characterized in that: the hydraulic assembly comprises a hydraulic oil circuit, a main oil cylinder and middle-female floating cylinders arranged on two sides of the die frame, the tail end of a piston rod of each middle-female floating cylinder is connected with the die frame, a quick oil cylinder is arranged at the top of the main oil cylinder and embedded in the piston rod of the main oil cylinder, and a die pressing head for pressing powder is arranged at the tail end of the piston rod of the main oil cylinder; the hydraulic oil way comprises an oil pump, a main oil cylinder oil inlet pipeline and an auxiliary oil way communicated with the middle-female floating cylinder, the main oil cylinder oil inlet pipeline is provided with a shunt pipeline connected with an upper oil cavity of the main oil cylinder, and a rod cavity of the main oil cylinder is connected with a rod cavity of the middle-female floating cylinder through a bypass oil way; a main cylinder reversing valve is arranged on the main cylinder oil inlet pipeline, a main cylinder speed regulating electromagnetic valve and a return pipe communicated with an oil tank are arranged on the flow dividing pipeline, and a one-way valve is arranged on the return pipe; the bypass oil path is provided with a main cylinder pressing reversing valve, the main cylinder pressing reversing valve is communicated with the oil tank through a return pipeline, and the return pipeline is provided with a first supporting valve.
3. The new powder hydraulic machine according to claim 2, characterized in that: the auxiliary oil way comprises an oil way I and an oil way II, the oil way I is connected with a rod cavity of the middle-female floating cylinder through a parallel branch, the oil way II is connected with a rodless cavity of the middle-female floating cylinder through a parallel branch, the oil way I and the oil way II are both connected with the oil pump and the oil tank through a floating cylinder reversing valve, and a second supporting valve is further arranged on the oil way II and used for supporting a piston rod of the middle-female floating cylinder not to fall.
4. The new powder hydraulic machine according to claim 2, characterized in that: the main cylinder pressing reversing valve is a two-position three-way electromagnetic reversing valve.
5. The new powder hydraulic machine according to claim 3, characterized in that: the first supporting valve and the second supporting valve are both one-way sequence valves.
6. A new powder hydraulic machine according to claim 3, characterised in that: the reversing valve of the main cylinder is an O-shaped three-position four-way reversing valve, and the reversing valve of the floating cylinder is a P-shaped three-position four-way reversing valve.
7. The new powder hydraulic machine according to claim 2, characterized in that: the master cylinder speed regulating electromagnetic valve is a normally closed two-position two-way fluid valve.
8. The new powder hydraulic machine according to claim 2, characterized in that: the annular cross section of the rod cavity of the master oil cylinder is equal to that of the rod cavity of the hollow floating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591255.4A CN114953577B (en) | 2022-05-27 | 2022-05-27 | Novel powder hydraulic press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591255.4A CN114953577B (en) | 2022-05-27 | 2022-05-27 | Novel powder hydraulic press |
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| CN114953577A true CN114953577A (en) | 2022-08-30 |
| CN114953577B CN114953577B (en) | 2023-07-07 |
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| CN202210591255.4A Active CN114953577B (en) | 2022-05-27 | 2022-05-27 | Novel powder hydraulic press |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007083250A (en) * | 2005-09-20 | 2007-04-05 | Sumitomo Denko Shoketsu Gokin Kk | Powder compacting method and powder compacting device |
| CN101705955A (en) * | 2009-09-28 | 2010-05-12 | 江苏科行环境工程技术有限公司 | Horomill hydraulic circuit with fast and smooth pressure-adding function |
| CN101712207A (en) * | 2009-09-08 | 2010-05-26 | 广东工业大学 | High performance and energy-saving double-acting hydrostatic press driven by servo motor |
| CN103143712A (en) * | 2013-03-08 | 2013-06-12 | 严培义 | Female die floating device of a shaping machine for powder sintering parts |
| CN203198288U (en) * | 2013-03-09 | 2013-09-18 | 赣州虔东稀土集团股份有限公司 | Hydraulic device of powder press |
| CN109332686A (en) * | 2018-12-10 | 2019-02-15 | 南通锻压设备如皋有限公司 | The floating molding electrohydraulic control system and control method of Ti electrode hydraulic press |
| CN211165462U (en) * | 2019-07-03 | 2020-08-04 | 成都正西液压设备制造有限公司 | Automatic servo powder forming hydraulic machine |
-
2022
- 2022-05-27 CN CN202210591255.4A patent/CN114953577B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007083250A (en) * | 2005-09-20 | 2007-04-05 | Sumitomo Denko Shoketsu Gokin Kk | Powder compacting method and powder compacting device |
| CN101712207A (en) * | 2009-09-08 | 2010-05-26 | 广东工业大学 | High performance and energy-saving double-acting hydrostatic press driven by servo motor |
| CN101705955A (en) * | 2009-09-28 | 2010-05-12 | 江苏科行环境工程技术有限公司 | Horomill hydraulic circuit with fast and smooth pressure-adding function |
| CN103143712A (en) * | 2013-03-08 | 2013-06-12 | 严培义 | Female die floating device of a shaping machine for powder sintering parts |
| CN203198288U (en) * | 2013-03-09 | 2013-09-18 | 赣州虔东稀土集团股份有限公司 | Hydraulic device of powder press |
| CN109332686A (en) * | 2018-12-10 | 2019-02-15 | 南通锻压设备如皋有限公司 | The floating molding electrohydraulic control system and control method of Ti electrode hydraulic press |
| CN211165462U (en) * | 2019-07-03 | 2020-08-04 | 成都正西液压设备制造有限公司 | Automatic servo powder forming hydraulic machine |
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| CN114953577B (en) | 2023-07-07 |
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