Double-cylinder circulation type ultrahigh pressure isostatic pressing forming device and control system thereof

Abstract

The invention relates to the technical field of isostatic pressing machines, in particular to a double-cylinder circulation type ultrahigh-pressure isostatic pressing forming device and a control system thereof.The double-cylinder circulation type ultrahigh-pressure isostatic pressing forming device comprises a main machine and a mounting frame and further comprises a plurality of isostatic pressing cavities movably arranged on the mounting frame; the switching unit is arranged on the mounting frame and connected with the multiple isostatic pressing cavities, the multiple feeding bases are movably arranged on the mounting frame, and the number of the feeding bases is the same as that of the isostatic pressing cavities; according to the double-cylinder circulation type ultrahigh-pressure isostatic pressing forming device and the control system thereof, a plurality of isostatic pressing cavities are designed, and the isostatic pressing cavities are recycled under the action of the switching unit, so that compaction work is performed in one isostatic pressing cavity, and meanwhile, the isostatic pressing efficiency is improved. And other isostatic pressing cavities can carry out feeding and discharging operation, so that the production efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of isostatic presses, and particularly to a double-cylinder circulating ultra-high pressure isostatic pressing forming device and its control system. Background Art

[0002] In the field of metal powder processing, isostatic presses, as an important forming equipment, are widely used in the powder pressing and forming processes of powder metallurgy and other industries. Through specific pressing processes, these powders can be made into parts and products with complex shapes and excellent properties.

[0003] However, traditional isostatic presses usually adopt a design with a single pressing chamber, that is, only one workpiece can be pressed at a time. The working process of this single-chamber isostatic press usually includes multiple steps such as loading, pressing, holding pressure, releasing pressure, and unloading. Each step requires a certain amount of time to complete, and during the entire pressing cycle, the chamber that is not being pressed is in an idle state and cannot be effectively utilized. For example, a dry-bag isostatic press with the publication number CN112060664B. This production method greatly reduces the production efficiency and restricts the production capacity of the factory. Therefore, we propose a double-cylinder circulating ultra-high pressure isostatic pressing forming device and its control system. Summary of the Invention

[0004] One technical problem to be solved by the present application is: how to design a double-cylinder circulating ultra-high pressure isostatic pressing forming device and its control system.

[0005] To solve the above technical problem, the embodiment of the present application provides a double-cylinder circulating ultra-high pressure isostatic pressing forming device, including a main machine and a mounting frame, and further including: Multiple isostatic pressing chambers, and multiple said isostatic pressing chambers are respectively movably arranged on the mounting frame; A switching unit, the switching unit is arranged on the mounting frame and is connected to multiple isostatic pressing chambers, and is used to adjust the positions of multiple isostatic pressing chambers, so that when the metal powder in one isostatic pressing chamber is being compacted, the remaining isostatic pressing chambers can perform loading and unloading operations; Multiple loading seats, and multiple said loading seats are respectively movably arranged on the mounting frame, and the number of loading seats is the same as the number of isostatic pressing chambers; A loading unit, the loading unit is arranged on the mounting frame and is in contact with the loading seats, and is used to complete the cooperation between the loading seats and the isostatic pressing chambers.

[0006] In some embodiments, the switching unit includes a rotating frame arranged on the mounting frame, and multiple said isostatic pressing chambers are evenly arranged on the rotating frame, and a rotating member is arranged on the mounting frame for driving the rotating frame and the isostatic pressing chambers to rotate; A medium circulation member is provided on the installation frame for filling and discharging the medium into and from the isostatic pressing cavity that is about to start the compaction work. Locking members are provided at the bottom of the isostatic pressing cavity for locking and positioning the loading seat.

[0007] In some embodiments, the rotating member includes a driving motor provided on the installation frame. A bushing is rotatably provided on the installation frame, and the output end of the driving motor is connected to the bushing.

[0008] In some embodiments, the medium circulation member includes a first electric push rod provided on the installation frame. A connecting plate is provided at one end of the first electric push rod. Two first quick connectors are provided on the connecting plate. Liquid inlets and liquid outlets are provided at the top of the isostatic pressing cavity. The two first quick connectors are respectively communicated with the liquid inlet and the liquid outlet. The bottom of the liquid outlet is close to the inner side of the bottom of the isostatic pressing cavity. A first pressure bag is provided inside the isostatic pressing cavity. The liquid inlet and the liquid outlet are both located between the first pressure bag and the inner wall of the isostatic pressing cavity.

[0009] In some embodiments, the locking member includes an air pump and a control valve provided on the rotating frame. A storage battery and a control terminal are provided on the rotating frame. The air pump and the control valve are both electrically connected to the control terminal. A plurality of air cylinders communicated with the air pump are provided at the bottom of the isostatic pressing cavity. A locking block that fits with the loading seat is provided at the end of the air cylinder.

[0010] In some embodiments, the loading unit includes a fixed motor provided on the installation frame. A plurality of guide wheels are rotatably provided on the installation frame. A synchronous belt is provided between the plurality of guide wheels. The output end of the fixed motor is connected to an adjacent guide wheel. Two lead screws are rotatably provided on the installation frame. The bottoms of the two lead screws are respectively connected to the guide wheels. A displacement frame is threadedly connected between the two lead screws. The loading seat is placed on the displacement frame.

[0011] In some embodiments, a cylindrical block is slidably provided at the center of the loading seat. The cylindrical block is connected to a metal core rod by a bolt. The metal core rod and the cylindrical block have the same size. A sealing plate that fits with the cylindrical block is slidably provided on the loading seat. A sliding groove for sliding adjustment of the sealing plate is provided on the loading seat. A compression spring is provided in the sliding groove. An upper pressing member is provided on the installation frame for pushing open the sealing plate when the isostatic pressing cavity is depressurized and pressing up the cylindrical block and the metal core rod.

[0012] In some embodiments, the upper pressing member includes a second electric push rod disposed on the mounting frame. A displacement plate is disposed on the second electric push rod. A third electric push rod is disposed on the displacement plate. A top block for pressing the cylindrical block is disposed on the third electric push rod. A dial block is slidably disposed on the displacement plate. The feeding base is chamfered, and the top of the dial block is of an inclined structure. A return spring is disposed between the displacement plate and the top block.

[0013] In some embodiments, a rubber core rod is disposed on the top of the feeding base. The rubber core rod is of a hollow structure. A second pressure bag is disposed inside the rubber core rod. A pressure port and a pressure relief port communicating with the second pressure bag inside the rubber core rod are disposed on the feeding base. A fourth electric push rod is disposed on the mounting frame. A bent plate is disposed at the end of the fourth electric push rod. Two quick connectors II are disposed on the bent plate. The two quick connectors II are respectively communicated with the pressure port and the pressure relief port.

[0014] A control system of a double-cylinder circulating type ultra-high pressure isostatic pressing forming device comprises the following steps: S1. Place the rubber mold filled with metal powder on the feeding base, and use the feeding unit to send it into the isostatic pressing cavity; S2. Use the locking member to complete the locking and positioning of the feeding base, and send the isostatic pressing cavity to the working position under the action of the rotating member; S3. Start the medium circulating member to pressurize the inside of the isostatic pressing cavity, complete the pressing work of the metal powder and reset.

[0015] The present invention has at least the following beneficial effects: 1. By designing a plurality of isostatic pressing cavities and realizing the cyclic use of the isostatic pressing cavities under the action of the switching unit, while one isostatic pressing cavity is performing the compaction work, other isostatic pressing cavities can perform the loading and unloading operations of the metal powder, thereby significantly improving the production efficiency; 2. By adopting the design of the rotating frame and the rotating member, a plurality of isostatic pressing cavities can be evenly distributed and sequentially rotated, making full use of the equipment space, avoiding the idle problem of the traditional single-cavity isostatic press when waiting for the loading and unloading of the metal powder, and optimizing the resource utilization; 3. The integrated design of components such as the medium circulating member, the locking member and the feeding unit realizes the automatic control of the isostatic pressing forming process, reduces the manual operation, and improves the consistency and stability of the production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is another schematic diagram of the overall structure of the present invention; Figure 3 is of the present invention Figure 2 the enlarged schematic diagram of area A in Figure 4 Schematic diagram of the overall sectional structure of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of area B in the present invention; Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of area C in the present invention; Figure 7 Schematic diagram of the overall bottom sectional structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of area D in the present invention; Figure 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of area E in the present invention; Figure 10 Schematic diagram of the structure of the installation frame and the isostatic pressure chamber of the present invention; Figure 11 Schematic diagram of the sectional structure of the installation frame and the isostatic pressure chamber of the present invention; Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure of area F in the present invention; Figure 13 Schematic diagram of the partial structure of the medium circulation part of the present invention; Figure 14 Schematic diagram of the structure of the installation frame and the isostatic pressure chamber of Embodiment 2 of the present invention; Figure 15 For the present invention Figure 14 Schematic diagram of the sectional structure; Figure 16 Schematic diagram of the upper top part structure of the present invention; Figure 17 Schematic diagram of the structure of the installation frame and the isostatic pressure chamber of Embodiment 3 of the present invention; Figure 18 For the present invention Figure 17 Schematic diagram of the sectional structure; Figure 19 Schematic diagram of the sectional structure of the installation frame and the isostatic pressure chamber of the present invention; Figure 20 For the present invention Figure 19 Schematic diagram of the enlarged structure of area G in the present invention.

[0017] In the figure: 1. Main machine; 2. Installation frame; 3. Switching unit; 31. Rotating frame; 4. Rotating part; 41. Driving motor; 42. Bush; 5. Medium circulation part; 51. First electric push rod; 52. Connecting plate; 53. First quick connector; 54. Liquid inlet; 55. Liquid outlet; 56. First pressure bag; 6. Locking part; 61. Air pump; 62. Control valve; 63. Storage battery; 64. Control terminal; 65. Cylinder; 66. Locking block; 7. Feeding unit; 71. Fixed motor; 72. Guide wheel; 73. Synchronous belt; 74. Lead screw; 75. Shifting frame; 8. Lifting part; 81. Cylindrical block; 82. Metal mandrel; 83. Sealing plate; 84. Chute; 85. Extrusion spring; 86. Second electric push rod; 87. Shifting plate; 88. Third electric push rod; 89. Top block; 810. Pushing block; 811. Return spring; 9. Isostatic pressure chamber; 10. Feeding seat; 11. Rubber mandrel; 12. Second pressure bag; 13. Pressure inlet; 14. Pressure discharge port; 15. Third electric push rod; 16. Bent plate; 17. Second quick connector. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1

[0020] Please refer to Figures 1 - 13 , the present invention provides a technical solution: A double-cylinder circulating type ultra-high pressure isostatic pressing forming device includes a main machine 1 and an installation frame 2. The main machine 1 is a common existing structure, which includes a supercharging control system, a hydraulic system, an electrical control system, etc., and is used to inject emulsified liquid into the isostatic pressure chamber 9 to press the metal powder in the rubber mold. The emulsified liquid directly contacts the first pressure bag 56, but does not contact the rubber mold, so as to ensure the dryness of the pressed product. At the same time, a dry bag is arranged between the rubber mold and the pressure bag. The dry bag can be directly fixed on the surface of the rubber mold or fixed by installation for further drying, which will not be elaborated here. It also includes: A plurality of isostatic pressure chambers 9, and the plurality of isostatic pressure chambers 9 are respectively movably arranged on the installation frame 2; A switching unit 3, the switching unit 3 is arranged on the installation frame 2 and is connected to the plurality of isostatic pressure chambers 9, and is used to adjust the positions of the plurality of isostatic pressure chambers 9 so that when the metal powder in one isostatic pressure chamber 9 is compacted, the remaining isostatic pressure chambers 9 can perform loading and unloading operations; The switching unit 3 includes a rotating frame 31 arranged on the mounting frame 2, and a plurality of the isostatic pressing chambers 9 are uniformly arranged on the rotating frame 31. A rotating member 4 is arranged on the mounting frame 2 and is used to drive the rotating frame 31 and the isostatic pressing chambers 9 to rotate; A medium circulation member 5 is arranged on the mounting frame 2 and is used to fill and discharge the medium into the isostatic pressing chamber 9 that is about to start the compaction work; Locking members 6 are arranged at the bottoms of the isostatic pressing chambers 9 respectively and are used to lock and position the feeding seat 10; The rotating member 4 includes a driving motor 41 arranged on the mounting frame 2. A bushing 42 is rotatably arranged on the mounting frame 2, and the output end of the driving motor 41 is connected to the bushing 42; The medium circulation member 5 includes a first electric push rod 51 arranged on the mounting frame 2. A connecting plate 52 is arranged at the end of the first electric push rod 51. Two first quick connectors 53 are arranged on the connecting plate 52. Liquid inlets 54 and liquid outlets 55 are arranged at the tops of the isostatic pressing chambers 9 respectively. The two first quick connectors 53 are respectively communicated with the liquid inlets 54 and the liquid outlets 55. The bottom of the liquid outlet 55 is close to the inner side of the bottom of the isostatic pressing chamber 9. A first pressure bag 56 is arranged inside the isostatic pressing chamber 9. The liquid inlets 54 and the liquid outlets 55 are both located between the first pressure bag 56 and the inner wall of the isostatic pressing chamber 9; In this solution, the medium uses emulsion as the pressurizing medium inside the isostatic pressing chamber 9, but it is not limited. It can also be oil, gas, etc.; The liquid inlet 54 is arranged at the inner top of the isostatic pressing chamber 9 and can directly fill the emulsion into the first pressure bag 56. The liquid outlet 55 is arranged at the inner bottom of the isostatic pressing chamber 9 to ensure that the emulsion inside the first pressure bag 56 is discharged; The locking member 6 includes an air pump 61 and a control valve 62 arranged on the rotating frame 31. A storage battery 63 and a control terminal 64 are arranged on the rotating frame 31. The air pump 61 and the control valve 62 are both electrically connected to the control terminal 64. A plurality of air cylinders 65 communicated with the air pump 61 are arranged at the bottom of the isostatic pressing chamber 9. A locking block 66 that fits the feeding seat 10 is arranged at the end of the air cylinder 65; The locking block 66 can fit the protruding position at the bottom of the feeding seat 10 to realize the locking of the feeding seat 10; A plurality of feeding seats 10. The plurality of feeding seats 10 are respectively movably arranged on the mounting frame 2. The number of the feeding seats 10 is the same as the number of the isostatic pressing chambers 9. In this solution, the number of both the feeding seats 10 and the isostatic pressing chambers 9 is 2; A feeding unit 7. The feeding unit 7 is arranged on the mounting frame 2 and is in contact with the feeding seat 10 and is used to complete the cooperation between the feeding seat 10 and the isostatic pressing chamber 9; The feeding unit 7 includes a fixed motor 71 disposed on the mounting frame 2. A plurality of guide wheels 72 are rotatably provided on the mounting frame 2. A synchronous belt 73 is disposed between the plurality of guide wheels 72. The output end of the fixed motor 71 is connected to an adjacent guide wheel 72. Two lead screws 74 are rotatably provided on the mounting frame 2. The bottoms of the two lead screws 74 are respectively connected to the guide wheels 72. A displacement frame 75 is threadedly connected between the two lead screws 74. The feeding seat 10 is placed on the displacement frame 75; The rotation of the fixed motor 71 drives the rotation of the adjacent guide wheel 72. Under the action of the synchronous belt 73 and the plurality of guide wheels 72, the guide wheels 72 on both sides are driven to rotate, that is, the two lead screws 74 can be driven to rotate, thereby realizing the lifting adjustment of the displacement frame 75 and realizing the placement of the rubber mold on the feeding seat 10.

[0021] A control system for a double-cylinder circulation type ultra-high pressure isostatic pressing forming device is as follows: S1. Place the rubber mold filled with metal powder on the feeding seat 10 and use the feeding unit 7 to send it into the isostatic pressing cavity 9; S2. Use the locking member 6 to complete the locking and positioning of the feeding seat 10, and send the isostatic pressing cavity 9 to the working position under the action of the rotating member 4; S3. Start the medium circulation member 5 to pressurize the inside of the isostatic pressing cavity 9, complete the pressing work of the metal powder and reset.

[0022] During use, the staff checks the internal structures of the main machine 1 and adds an appropriate amount of metal powder into the rubber mold on the feeding seat 10 to complete the pre-pressing treatment of the metal powder, which is a common existing treatment method and will not be elaborated here. After feeding: The fixed motor 71 is started to drive the rotation of the adjacent guide wheel 72. Under the action of the synchronous belt 73 and the plurality of guide wheels 72, the guide wheels 72 on both sides are driven to rotate, that is, the two lead screws 74 can be driven to rotate, thereby realizing the lifting adjustment of the displacement frame 75 and realizing the placement of the rubber mold on the feeding seat 10; The control terminal 64 drives the air pump 61 and the control valve 62 to work, so that the air cylinder 65 pushes the locking block 66 to shift, realizing the locking of the feeding seat 10, and then driving the motor 41 to start to drive the shaft sleeve 42 and the rotating frame 31 to rotate, realizing the switching of the isostatic pressing cavity 9. If there is a pressed product in the isostatic pressing cavity 9, first take out the product and add metal powder again to complete the pre-pressing treatment of the metal powder. If there is no pressed product in the isostatic pressing cavity 9, directly add metal powder to complete the pre-pressing treatment of the metal powder; After the isostatic pressing cavity 9 rotates, the first electric push rod 51 starts to drive the connecting plate 52 and the first quick connector 53 to shift. The two first quick connectors 53 are respectively connected to the liquid inlet 54 and the liquid outlet 55, and then the pressing starts. After the pressing is completed, the first electric push rod 51 controls the connecting plate 52 and the first quick connector 53 to reset, and repeating the above work can achieve the purpose.

[0023] Embodiment 2

[0024] Please refer to Figures 14 - 16 , the present invention provides a technical solution: Different from Embodiment 1, a cylindrical block 81 is slidably arranged at the center of the loading seat 10. The cylindrical block 81 is connected with a metal core rod 82 by bolts. The metal core rod 82 and the cylindrical block 81 have the same size. A sealing plate 83 that fits the cylindrical block 81 is slidably arranged on the loading seat 10. A sliding groove 84 for sliding adjustment of the sealing plate 83 is formed on the loading seat 10, and a compression spring 85 is arranged in the sliding groove 84; Squeezing the sealing plate 83 can drive the sealing plate 83 to shift and compress the compression spring 85, so that the cylindrical block 81 is exposed; An upper pressing member 8 is arranged on the mounting frame 2, which is used to push open the sealing plate 83 when the isostatic pressing cavity 9 is depressurized, and press up the cylindrical block 81 and the metal core rod 82; The upper pressing member 8 includes a second electric push rod 86 arranged on the mounting frame 2. A shifting plate 87 is arranged on the second electric push rod 86. A third electric push rod 88 is arranged on the shifting plate 87. A top block 89 for pressing the cylindrical block 81 is arranged on the third electric push rod 88. A shifting block 810 is slidably arranged on the shifting plate 87. The loading seat 10 is chamfered, and the top of the shifting block 810 is of an inclined structure. A reset spring 811 is arranged between the shifting plate 87 and the top block 89; The chamfered position on the loading seat 10 fits the shifting block 810, so that when the shifting block 810 shifts, it can drive the sealing plate 83 to shift, and does not affect the shifting of the shifting block 810 from the chamfered position; During the pressing in the isostatic pressing cavity 9, the pressed metal powder, the metal core rod 82 and other structures located inside the isostatic pressing cavity 9 will all be subjected to uniform inward pressure from the top, bottom and all around. When the isostatic pressing cavity 9 is suddenly depressurized, the uniform inward pressure from the top, bottom and all around that the metal powder is subjected to will also disappear, and the pressure on the structures such as the metal core rod 82 located inside the isostatic pressing cavity 9 will also disappear. However, structures such as the metal core rod 82 will not immediately return to their original state, but will take some time to return to their original state. This causes compressive stress at both ends of the pressed product, resulting in an unstable state of the product and thus a certain amount of deformation and bending.

[0025] During pressure relief, the second electric push rod 86 starts to drive the displacement plate 87 to shift, so that the dial block 810 enters the chamfer position on the feeding seat 10. Continuing to shift will drive the plugging plate 83 to shift and compress the extrusion spring 85, thereby exposing the cylindrical block 81. The third electric push rod 88 starts to drive the top block 89 to rise. The top block 89 contacts the cylindrical block 81 and continues to squeeze upward, thereby giving an upward lifting force to the cylindrical block 81 and the metal mandrel 82, so that the metal mandrel 82 has a lifting force to maintain a straight trend. In this way, the compressive stress that the two ends of the pressed product will receive is offset, thereby reducing or suppressing the deformation and bending of the product.

[0026] Embodiment 3

[0027] Please refer to Figures 17 - 20 , the present invention provides a technical solution: Different from Embodiment 1, a rubber mandrel 11 is provided at the top of the feeding seat 10. The rubber mandrel 11 has a hollow structure. A second pressure bag 12 is provided inside the rubber mandrel 11. A pressure port 13 and a pressure relief port 14 communicating with the second pressure bag 12 inside the rubber mandrel 11 are provided on the feeding seat 10. An electric push rod four 15 is provided on the installation frame 2. A bent plate 16 is provided at the end of the electric push rod four 15. Two quick connectors two 17 are provided on the bent plate 16. The two quick connectors two 17 are respectively communicated with the pressure port 13 and the pressure relief port 14. The oil circuit is communicated with the main machine 1 and is regulated by the hydraulic system inside the main machine 1; During isostatic pressing in the isostatic pressing chamber 9, the pressed metal powder, the rubber mandrel 11 and other structures located inside the isostatic pressing chamber 9 will all be subjected to uniform inward pressure from the top, bottom and around. When the pressure suddenly drops inside the isostatic pressing chamber 9, the uniform inward pressure from the top, bottom and around that the metal powder is subjected to will also disappear, and the pressure on the structures such as the rubber mandrel 11 located inside the isostatic pressing chamber 9 will also disappear. However, structures such as the rubber mandrel 11 will not immediately return to their original state, but will take some time to return to their original state. This causes compressive stress on both ends of the pressed product, causing the product to be in an unstable state and thus showing a certain degree of deformation and bending; During pressurization inside the isostatic pressing chamber 9, the bent plate 16 and the quick connector two 17 are driven to shift synchronously by the electric push rod four 15, and emulsified liquid is injected into the rubber mandrel 11 through the hydraulic system, so that there is a stable stress state inside the rubber mandrel 11. When the pressure is relieved inside the isostatic pressing chamber 9, the pressure inside the rubber mandrel 11 is relieved asynchronously, and the pressure relief time is later than the pressure relief time inside the isostatic pressing chamber 9. This gives the rubber mandrel 11 a holding force to maintain a straight trend. In this way, the compressive stress that the two ends of the pressed product will receive is offset, thereby reducing or suppressing the deformation and bending of the product.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A dual-cylinder circulation type ultra-high pressure isostatic pressing device, comprising a main machine (1) and a mounting frame (2), characterized in that: Also included are: A plurality of isostatic pressure chambers (9), wherein the plurality of isostatic pressure chambers (9) are movably arranged on the mounting frame (2); A switching unit (3), the switching unit (3) being arranged on the mounting frame (2) and connected to the plurality of isostatic pressing chambers (9), and being used to adjust the positions of the plurality of isostatic pressing chambers (9), so that when the metal powder in one isostatic pressing chamber (9) is compacted, the remaining isostatic pressing chambers (9) can carry out loading and unloading operations; A plurality of loading seats (10), wherein the plurality of loading seats (10) are movably arranged on the mounting frame (2), and the number of the loading seats (10) is the same as the number of the isostatic pressure chambers (9); A loading unit (7) is arranged on the mounting frame (2) and in contact with the loading seat (10), and is used to complete the matching between the loading seat (10) and the isostatic pressure chamber (9).

2. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 1, characterized in that: The switching unit (3) comprises a rotating frame (31) arranged on the mounting frame (2), a plurality of the isostatic pressure chambers (9) being evenly arranged on the rotating frame (31), and a rotating member (4) being arranged on the mounting frame (2) for driving the rotating frame (31) and the isostatic pressure chambers (9) to rotate; The mounting frame (2) is provided with a medium circulation member (5) for filling and discharging the medium into and out of the isostatic pressure chamber (9) ready to start compaction work; The bottom of the isostatic pressure chamber (9) is provided with a locking member (6) for locking and positioning the loading seat (10).

3. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 2, characterized in that: The rotating member (4) comprises a driving motor (41) arranged on a mounting frame (2), a shaft sleeve (42) being rotatably arranged on the mounting frame (2), and an output end of the driving motor (41) is connected to the shaft sleeve (42).

4. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 3, characterized in that: The medium circulation member (5) comprises an electric push rod (51) arranged on the mounting frame (2), a connecting plate (52) being arranged at the end of the electric push rod (51), two quick connectors (53) being arranged on the connecting plate (52), a liquid inlet (54) and a liquid outlet (55) being arranged at the top of the isostatic chamber (9), the two quick connectors (53) being respectively connected to the liquid inlet (54) and the liquid outlet (55), the bottom of the liquid outlet (55) being close to the inner side of the bottom of the isostatic chamber (9), a pressurizing bag (56) being arranged inside the isostatic chamber (9), the liquid inlet (54) and the liquid outlet (55) being located between the pressurizing bag (56) and the inner wall of the isostatic chamber (9).

5. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 4, characterized in that: The locking member (6) comprises an air pump (61) and a control valve (62) arranged on a rotating frame (31); a storage battery (63) and a control terminal (64) are arranged on the rotating frame (31); the air pump (61) and the control valve (62) are both electrically connected to the control terminal (64); a plurality of cylinders (65) connected to the air pump (61) are arranged at the bottom of the isostatic chamber (9); and a locking block (66) which fits with the loading seat (10) is arranged at the end of the cylinder (65).

6. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 5, characterized in that: The loading unit (7) comprises a fixed motor (71) arranged on a mounting frame (2); a plurality of guide wheels (72) are rotatably arranged on the mounting frame (2); a synchronous belt (73) is arranged between the plurality of guide wheels (72); an output end of the fixed motor (71) is connected to an adjacent guide wheel (72); two screw rods (74) are rotatably arranged on the mounting frame (2); the bottoms of the two screw rods (74) are respectively connected to the guide wheels (72); a shift frame (75) is threadedly connected between the two screw rods (74); and the loading seat (10) is placed on the shift frame (75).

7. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 6, characterized in that: A cylindrical block (81) is slidably disposed at the center of the loading seat (10), the cylindrical block (81) is connected to a metal core rod (82) by bolts, the metal core rod (82) and the cylindrical block (81) have the same size, a sealing plate (83) is slidably disposed on the loading seat (10) and is fitted with the cylindrical block (81), a slide groove (84) for sliding adjustment of the sealing plate (83) is provided on the loading seat (10), and a compression spring (85) is disposed in the slide groove (84); The mounting frame (2) is provided with an upper push piece (8) for pushing open the blocking plate (83) and pushing up the cylindrical block (81) and the metal core rod (82) when the isostatic pressure chamber (9) is depressurized.

8. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 7, characterized in that: The upper push member (8) comprises an electric push rod 2 (86) arranged on the mounting frame (2), a shift plate (87) being arranged on the electric push rod 2 (86), an electric push rod 3 (88) being arranged on the shift plate (87), a push block (89) for extruding the cylindrical block (81) being arranged on the electric push rod 3 (88), a shift block (810) being slidably arranged on the shift plate (87), the loading seat (10) being chamfered, and the top of the shift block (810) being an inclined structure, and a return spring (811) being arranged between the shift plate (87) and the push block (89).

9. The dual-cylinder circulation type ultra-high pressure isostatic pressing device according to claim 6, characterized in that: A rubber core rod (11) is arranged on the top of the loading seat (10), the rubber core rod (11) is of a hollow structure, a second pressurizing bag (12) is arranged inside the rubber core rod (11), a pressurizing port (13) and a pressure relief port (14) which are connected to the second pressurizing bag (12) inside the rubber core rod (11) are arranged on the loading seat (10), an electric push rod (15) is arranged on the mounting frame (2), a bent plate (16) is arranged at the end of the electric push rod (15), two quick connectors (17) are arranged on the bent plate (16), and the two quick connectors (17) are respectively connected to the pressurizing port (13) and the pressure relief port (14).

10. A control system for a dual-cylinder circulation type ultra-high pressure isostatic pressing device according to any one of claims 1 to 9, comprising the following steps: S1, placing the rubber mold filled with metal powder on a loading seat (10), and sending it into the isostatic pressing chamber (9) using a loading unit (7); S2, using the locking member (6) to complete the locking and positioning of the loading seat (10), and under the action of the rotating member (4), the static pressure chamber (9) is lowered to the working position; S3, starting the medium circulation component (5) to pressurize the interior of the isostatic pressure chamber (9), completing the pressing of the metal powder and resetting.

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