Multi-station internal high-pressure flexible forming device and method

Abstract

The invention relates to the technical field of internal high-pressure forming, in particular to a multi-station internal high-pressure flexible forming device and method. The device comprises a rack, a supporting disc, a rotary table, a drainage assembly, a driving assembly A, a pressurizing mechanism B, a support and a driving assembly B. A water storage tank and a high-pressure pump are arranged in the rack, and the high-pressure pump communicates with the water storage tank and the water outlet pipe. The supporting disc is connected with the pressurizing mechanism A and communicates with the water guide pipe. The rotary table is provided with a plurality of lower die cavities, and the two ends of each lower die cavity are provided with a slot A and a slot B respectively. And each output port of the pressurizing mechanism A is inserted into the slot B in the corresponding side. The drainage assembly is communicated with the water guide pipe in the state that the lower die cavity on the rotary table rotates to the feeding station. The driving assembly A drives the rotary table to rotate. The pressurizing mechanism B communicates with the water outlet pipe and the slot A; the upper die base slidably connected with the support is communicated with an exhaust pipe. The driving assembly B drives the upper die base to ascend and descend. The device is provided with multiple stations, pipe blank feeding, discharging and pressure forming can be achieved at the same time, and efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of internal high pressure forming, and in particular to a multi-station internal high pressure flexible forming device and method. Background Art

[0002] The principle of internal high-pressure forming is to apply ultra-high-pressure liquid inside the tube and apply axial thrust to both ends of the tube to feed the material, so that the tube material undergoes plastic deformation and finally fits with the inner wall of the mold cavity to form a hollow part with the required shape and precision.

[0003] The technical solution disclosed in the Chinese patent with publication number CN117244993A improves production efficiency and reduces production costs by using machines to replace manual labor to form internal high-pressure pipe fittings. At the same time, machine operations can reduce many inconveniences caused by manual operations, such as new employee training and excessively high defective rates in quality inspection or production due to individual differences in personnel.

[0004] However, the device still has some shortcomings: during actual processing, the equipment needs to wait for the tube blank to be pressurized and formed and then taken out before loading the next group of tube blanks. Both loading and unloading take time, and the waiting time is long, resulting in low production efficiency of the equipment. Summary of the invention

[0005] The purpose of the present invention is to address the problems existing in the background technology and to provide a multi-station internal high-pressure flexible molding device and method.

[0006] The technical solution of the present invention: On the one hand, the present invention proposes a multi-station high-pressure flexible forming device, including a frame, a water tank and a high-pressure pump are arranged in the frame, the input end of the high-pressure pump is connected to the water tank through a water pumping pipe, and a water outlet pipe is arranged at the output end of the high-pressure pump, and at least one processing station and one loading station are arranged on the frame.

[0007] A support plate, a booster mechanism A with multiple output ports is centrally arranged in the receiving groove of the support plate, and a water pipe connecting the receiving groove and the water storage tank is arranged at the bottom of the support plate.

[0008] The turntable is located in the receiving groove and is slidably connected to the inner wall of the support plate. A plurality of lower mold cavities are arranged in a circular array around the axis of the turntable. A slot A and a slot B communicating with the interior of the lower mold cavity are arranged at both ends of each lower mold cavity. Each output port of the booster mechanism A is respectively inserted into the slot B on the corresponding side and fits with the inner wall thereof.

[0009] A drainage component is connected to the turntable, and the drainage component is connected to the water pipe when the lower mold cavity on the turntable rotates to a non-processing position.

[0010] The driving assembly A is connected to the supporting disk and drives the turntable and the boosting mechanism A to rotate.

[0011] The boosting mechanism B is connected to the frame, the output end of the boosting mechanism is inserted into the slot A on the processing station and is slidably connected to the inner wall thereof, and the boosting mechanism B is connected to the water outlet pipe and the slot A.

[0012] The bracket is slidably connected to the upper die base, and the upper die base is provided with an exhaust pipe connected to the slot B located on the processing station.

[0013] And a driving component B, which is connected with the bracket and drives the upper die base to rise and fall.

[0014] Preferably, the boost mechanism A comprises a fixed tube, a sealing cover and a hydraulic cylinder A. The fixed tube is coaxial with the support plate and connected to the bottom of the support plate receiving groove. A through hole A communicating with the inside of the fixed tube is provided on the side wall of the fixed tube on the side facing the processing station. The sealing cover is sleeved on the outside of the fixed tube and is rotatably connected with the fixed tube. A plurality of through holes B are provided in an annular array on the side wall of the sealing cover around its axis. The through holes B are at the same height as the through holes A, and the through holes B on the side facing the processing station are connected with the through holes A. A plurality of guide tubes A correspondingly communicating with the through holes B are provided on the outer wall of the sealing cover. An extrusion rod A slidably connected to the inner wall of the guide tube A is provided. The extrusion rod A and the guide tube A are both inserted into the slot B on the corresponding side and slidably connected with the slot B. The piston is slidably arranged in the fixed tube. The piston is located below the through hole A, and hydraulic oil is filled between the piston and the through hole A. The hydraulic cylinder A is connected to the support plate and drives the piston to slide radially in the fixed tube.

[0015] Preferably, a water guide groove is arranged at the loading station at the bottom of the receiving groove of the support plate, and a collecting groove is arranged at the bottom of the receiving groove of the support plate, each water guide groove is connected with the collecting groove, and the water guide pipe is inserted into the collecting groove and connected with it.

[0016] Preferably, the drainage assembly includes a wedge-shaped sealing plate. A plurality of wedge-shaped holes connected to the lower mold cavity on the corresponding side are arranged in an annular array around the axis of the turntable. The wedge-shaped sealing plate is located in the wedge-shaped hole and is slidably connected to the inner wall thereof, and a roller is rotatably arranged at the bottom of the wedge-shaped sealing plate. When the roller falls on the bottom surface of the receiving groove of the support plate, the upper end surface of the wedge-shaped sealing plate just fits with the inner wall of the lower mold cavity. A guide groove is arranged along the radial direction of the wedge-shaped sealing plate. When the roller falls in the collecting groove, the guide groove connects the collecting groove and the lower mold cavity.

[0017] Preferably, the boosting mechanism B comprises a guide tube B, an extrusion rod B and a hydraulic cylinder B. The guide tube B is arranged on the support plate and communicated with the slot A located on the processing station, and a side hole communicating with the inside of the guide tube B is arranged on the side wall of the guide tube B. The extrusion rod B is located in the guide tube B and is slidably connected with the inner wall thereof, and a water inlet channel with only an opening toward the slot A is arranged in the extrusion rod B, and a water outlet pipe is inserted into the guide tube B along the side hole and connected to the extrusion rod B, and the water outlet pipe is communicated with the water inlet channel. The hydraulic cylinder B is connected to one end of the guide tube B away from the support plate, and a push rod of the hydraulic cylinder B is inserted into the guide tube B and connected to one end of the extrusion rod B away from the slot A.

[0018] Preferably, the driving assembly A comprises a motor. A coaxial annular groove is provided on the arc surface of the turntable, an outer gear ring is coaxially provided on the arc surface of the annular groove, the motor is connected to the support plate, an output end of the motor is connected to a gear, and the gear meshes with the outer gear ring.

[0019] On the other hand, the present invention also provides a multi-station internal high-pressure flexible molding method, using the above-mentioned multi-station internal high-pressure flexible molding device, comprising the following steps:

[0020] S1. Place the tube blank for processing the workpiece into the lower die cavity on the loading station, start the drive assembly A, and drive the turntable A to rotate to rotate the tube blank to the processing station, while continuing to place the tube blank in the lower die cavity on the loading station.

[0021] S2, start the drive component B, drive component B drives the upper die base to descend and close the mold with the lower die base, and the exhaust pipe is between the lower die cavity on the processing station and the output end of the supercharging mechanism A.

[0022] S3. Start the high-pressure pump to draw water from the water tank and inject it into the tube blank through the booster mechanism B. The air in the tube blank is completely discharged along the exhaust pipe. The booster mechanism A and the booster mechanism B act synchronously and pressurize the water in the tube blank, so that the tube blank fills the mold cavity. The tube blank gradually expands until it is formed.

[0023] S4. The turntable rotates the molded part to the loading station, takes out the molded part and replaces the tube blank.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] By setting up the structure of the support plate and the turntable, the turntable rotates inside the support plate, which can ensure that water does not flow around, and is convenient for collecting and recycling water; by setting up multiple lower mold cavities on the turntable, during the process of the lower mold cavity in the processing station cooperating with the upper mold base to pass the tube blank, the molded part in the lower mold cavity of the loading station can be taken out and the tube blank to be processed can be replaced, and after the tube blank at the current processing station is formed, the turntable can be rotated to directly carry out the molding work again, which is time-saving and efficient, and the present invention also sets an exhaust pipe on the upper mold base, which is convenient for exhausting the mold cavity of the processing station; at the same time, the present invention also retains the boosting mechanism A and the boosting mechanism B, and the boosting mechanism A and the boosting mechanism B only pressurize the tube blank in the mold cavity at the processing station. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 Schematic diagram of the internal structure of the rack;

[0028] Figure 3 It is a schematic diagram of the connection structure of various components on the support platform;

[0029] Figure 4 It is a schematic diagram of the connection structure of various components on the turntable;

[0030] Figure 5 It is a schematic diagram of the connection structure between the fixed pipe and the sealing cover.

[0031] Reference numerals: 1, frame; 2, water storage tank; 3, high-pressure pump; 31, water pumping pipe; 32, water outlet pipe; 4, support plate; 41, water guide groove; 42, collecting groove; 43, water guide pipe; 5, fixed pipe; 51, through hole A; 6, sealing cover; 61, through hole B; 7, guide pipe A; 8, extrusion rod A; 9, piston; 10, hydraulic cylinder A;

[0032] 11. Turntable; 111. Lower die cavity; 112. Slot A; 113. Slot B; 114. Wedge-shaped hole; 115. Annular groove; 12. Wedge-shaped sealing plate; 121. Guide groove; 13. External gear ring; 14. Gear; 15. Motor; 16. Guide pipe B; 161. Side hole; 17. Extrusion rod B; 171. Water inlet channel; 18. Hydraulic cylinder B; 19. Bracket; 20. Mounting plate; 21. Hydraulic cylinder C; 22. Upper die seat; 23. Exhaust pipe. DETAILED DESCRIPTION

[0033] Embodiment 1

[0034] like Figure 1-Figure 5As shown, a multi-station internal high-pressure flexible molding device proposed by the present invention includes a frame 1, a support plate 4, a turntable 11, a drainage assembly, a driving assembly A, a boosting mechanism B, a bracket 19 and a driving assembly B. A water storage tank 2 and a high-pressure pump 3 are arranged in the frame 1, the input end of the high-pressure pump 3 is connected to the water storage tank 2 through a water pumping pipe 31, and a water outlet pipe 32 is arranged at the output end of the high-pressure pump 3. At least one processing station and a loading station are arranged on the frame 1. A water guide groove 41 is arranged at the bottom of the receiving groove of the support plate 4 at the loading station, and a collecting groove 42 is arranged at the bottom of the receiving groove of the support plate 4. Each water guide groove 41 is connected to the collecting groove 42, and a water guide pipe 43 is inserted into the collecting groove 42 and connected with it. A boosting mechanism A with multiple output ports is arranged in the center of the receiving groove of the support plate 4, and a water guide pipe 43 connecting its receiving groove and the water storage tank 2 is arranged at the bottom of the support plate 4. The boosting mechanism A includes a fixed pipe 5, a sealing cover 6 and a hydraulic cylinder A10. The fixed tube 5 is coaxial with the support plate 4 and connected to the bottom of the receiving groove of the support plate 4. A through hole A51 communicating with the inside of the fixed tube 5 is provided on the side wall of the fixed tube 5 facing the processing station. The sealing cover 6 is sleeved on the outside of the fixed tube 5 and is rotatably connected with it. A plurality of through holes B61 are provided in an annular array on the side wall of the sealing cover 6 around its axis. The through holes B61 are at the same height as the through holes A51, and the through holes B61 facing the processing station are connected with the through holes A51. A plurality of guide tubes A7 corresponding to and communicating with each through hole B61 are provided on the outer wall of the sealing cover 6. An extrusion rod A8 slidably connected to the inner wall of the guide tube A7 is provided. The extrusion rod A8 and the guide tube A7 are both inserted into the slot B113 on the corresponding side and slidably connected with it. The piston 9 is slidably provided in the fixed tube 5. The piston 9 is located below the through hole A51. Hydraulic oil is filled between the piston 9 and the through hole A51. The hydraulic cylinder A10 is connected to the support plate 4 and drives the piston 9 to slide radially in the fixed tube 5. The turntable 11 is located in the receiving groove and is slidably connected to the inner wall of the support plate 4. A plurality of lower mold cavities 111 are arranged in a circular array around the axis of the turntable 11, and a slot A112 and a slot B113 communicating with the interior of the lower mold cavity 111 are arranged at both ends of each lower mold cavity 111. Each output port of the boost mechanism A is respectively inserted into the slot B113 on the corresponding side and fits with the inner wall. The drainage assembly includes a wedge-shaped sealing plate 12. A plurality of wedge-shaped holes 114 communicating with the lower mold cavity 111 on the corresponding side are arranged in a circular array around the axis of the turntable 11. The wedge-shaped sealing plate 12 is located in the wedge-shaped hole 114 and is slidably connected to the inner wall thereof, and a roller is rotatably arranged at the bottom of the wedge-shaped sealing plate 12. When the roller falls on the bottom surface of the receiving groove of the support plate 4, the upper end surface of the wedge-shaped sealing plate 12 just fits with the inner wall of the lower mold cavity 111. The wedge-shaped sealing plate 12 is provided with a guide groove 121 along its radial direction. When the roller falls into the collecting groove 42, the guide groove 121 connects the collecting groove 42 and the lower mold cavity 111. The drainage assembly is connected to the water guide pipe 43 when the lower mold cavity 111 on the turntable 11 rotates to a non-processing position. The driving assembly A includes but is not limited to the motor 15.An annular groove 115 coaxial with the turntable 11 is provided on the arc surface thereof, an outer gear ring 13 is coaxially provided on the arc surface of the annular groove 115, a motor 15 is connected to the support plate 4, an output end of the motor 15 is connected to the gear 14, and the gear 14 is meshed with the outer gear ring 15. The boost mechanism B comprises a guide tube B16, an extrusion rod B17 and a hydraulic cylinder B18. The guide tube B16 is provided on the support plate 4 and communicates with the slot A112 located on the processing station, and a side hole 161 communicating with the inside of the guide tube B16 is provided on the side wall thereof. The extrusion rod B17 is located in the guide tube B16 and is slidably connected with the inner wall thereof, a water inlet channel 171 with only an opening facing the slot A112 is provided in the extrusion rod B17, a water outlet pipe 32 is inserted into the guide tube B16 along the side hole 161 and is connected to the extrusion rod B17, and the water outlet pipe 32 is communicated with the water inlet channel 171. The hydraulic cylinder B18 is connected to the end of the guide tube B16 away from the support plate 4, and the push rod of the hydraulic cylinder B18 is inserted into the guide tube B16 and connected to the end of the extrusion rod B17 away from the slot A112. The bracket 19 is slidably connected to the mounting plate 20, and the bottom of the mounting plate 20 is provided with an upper die seat 22 with the upper die cavity opening facing downward, and the upper die seat 22 is provided with an exhaust pipe 23 connected to the slot B113 on the processing station. The driving component B includes but is not limited to the hydraulic cylinder C21, the cylinder barrel of the hydraulic cylinder C21 is connected to the bracket 19, and the push rod of the hydraulic cylinder C21 is connected to the mounting plate 20.

[0035] In this embodiment, the tube blank is placed in the lower mold cavity 111 of the loading station, and the motor 15 is started. The motor 15 drives the gear 14 to rotate, thereby driving the outer gear ring 13 and the turntable 11 to rotate, so as to transfer the tube blank to the processing station. Then, the tube blank is continued to be placed in the vacant lower mold cavity 111, and the hydraulic cylinder C21 is started at the same time. The hydraulic cylinder C21 drives the mounting plate 20 and the upper mold base 22 to descend and fall on the turntable 11 to complete the mold closing action. Then, the high-pressure pump 3 is started. The high-pressure pump 3 draws water from the water tank 2 and injects the water into the slot A112 through the water outlet pipe 32 and the water inlet channel 171. The water enters the tube blank and discharges the air in the tube blank along the exhaust pipe 23. Then, the hydraulic cylinders A10 and A11 are started at the same time. Hydraulic cylinder B18, hydraulic cylinder A10 pushes piston 9 to slide and squeezes the hydraulic oil in fixed tube 5. The hydraulic oil pushes extrusion rod A8, and extrusion rod A8 gradually goes deep into slot B113. In this process, extrusion rod A8 closes the air inlet of exhaust pipe 23, and hydraulic cylinder B18 pushes extrusion rod B17 to slide and make it go deep into slot A112. Extrusion rod A8 and extrusion rod B17 cooperate to pressurize the water in the tube blank, and use the water pressure to deform the tube blank until it fills the mold cavity and is formed. Then, the mounting plate 20 and the upper mold base 22 are pulled up, and the motor 15 drives the turntable 11 to rotate, so that the molded part rotates to the loading station. At this time, hydraulic cylinder C21 presses down again and processes the tube blank switched to the processing station. As the molded part moves to the loading station, the wedge-shaped sealing plate 12 slides down, and the upper end of the wedge-shaped hole 114 opens. The water in the lower mold cavity 111 where the molded part is located flows along the wedge-shaped hole 114 and the guide groove 121 into the water guide groove 41, and then flows into the collecting groove 42 through the water guide groove 41, and finally converges from the water pipe 43 into the water storage tank 2.

[0036] Embodiment 2

[0037] like Figure 1-Figure 5 As shown, the present invention proposes a multi-station internal high-pressure flexible forming device. Compared with the first embodiment, the number of the loading station and the processing station are two respectively, and the straight line where the two loading stations are located is perpendicular to the straight line where the two processing stations are located; the through holes A51 on the fixed tube 5 include two, and the radial directions of the two through holes A51 are on the same straight line; the number of the boosting mechanisms B is two groups, and the output ends of the two groups of boosting mechanisms correspond to the processing stations on the corresponding sides respectively.

[0038] In this embodiment, two workers complete the loading of tube blanks and the removal of molded parts at two loading stations respectively, further improving the production and processing efficiency of the entire device.

[0039] Embodiment 3

[0040] The present invention provides a multi-station internal high-pressure flexible molding method, which uses the multi-station internal high-pressure flexible molding device in the second embodiment, and specifically includes the following steps:

[0041] S1. Place the tube blank for processing the workpiece into the lower die cavity 111 on the loading station, start the drive assembly A, and drive the turntable 11 to rotate to rotate the tube blank to the processing station, while continuing to place the tube blank in the lower die cavity 111 on the loading station.

[0042] S2, start the drive assembly B, drive assembly B drives the upper die base 22 to descend and close the mold with the lower die base 11, and the exhaust pipe 23 is located between the lower mold cavity 111 on the processing station and the output end of the supercharging mechanism A.

[0043] S3, start the high-pressure pump 3 to pump water from the water tank 2 and inject it into the tube blank through the booster mechanism B. The air in the tube blank is completely discharged along the exhaust pipe 23. The booster mechanism A and the booster mechanism B act synchronously and pressurize the water in the tube blank, so that the tube blank fills the mold cavity, and the tube blank gradually expands until it is formed.

[0044] S4, the turntable 11 rotates to rotate the molded part to the loading station, takes out the molded part and replaces the tube blank.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A multi-station internal high-pressure flexible forming device, characterized in that: include A frame (1), a water tank (2) and a high-pressure pump (3) are arranged in the frame (1), an input end of the high-pressure pump (3) is connected to the water tank (2) through a water pumping pipe (31), an output end of the high-pressure pump (3) is provided with a water outlet pipe (32), and at least one processing station and one loading station are arranged on the frame (1); A support plate (4), wherein a pressure-boosting mechanism A having a plurality of output ports is centrally arranged in a receiving groove of the support plate (4), and a water guide pipe (43) connecting the receiving groove and the water storage tank (2) is arranged at the bottom of the support plate (4); A turntable (11), the turntable (11) is located in the storage groove and is slidably connected to the inner wall of the support plate (4), a plurality of lower mold cavities (111) are arranged on the turntable (11) in a ring array around its axis, and a slot A (112) and a slot B (113) are respectively arranged at two ends of each lower mold cavity (111) and are connected to the interior thereof; each output port of the boost mechanism A is respectively inserted into the slot B (113) on the corresponding side and fits with the inner wall thereof; A drainage assembly, the drainage assembly is connected to the turntable (11), and the drainage assembly is communicated with the water guide pipe (43) when the lower mold cavity (111) on the turntable (11) rotates to a non-processing position; A driving assembly A, the driving assembly A is connected to the supporting plate (4) and drives the turntable (11) and the boosting mechanism A to rotate; A booster mechanism B, the booster mechanism B is connected to the frame (1), the output end of the booster mechanism is inserted into a slot A (112) on the processing station and is slidably connected to the inner wall thereof, and the booster mechanism B is connected to the water outlet pipe (32) and the slot A (112); A bracket (19), the bracket (19) is slidably connected to an upper die base (22), and an exhaust pipe (23) is provided on the upper die base (22) and is connected to a slot B (113) located at a processing station; And a driving component B, which is connected to the bracket (19) and drives the upper mold base (22) to rise and fall.

2. A multi-station internal high-pressure flexible forming device according to claim 1, characterized in that: The booster mechanism A comprises a fixed pipe (5), a sealing cover (6) and a hydraulic cylinder A (10); a plurality of springs b (6) are arranged on the fixed pipe (5) and the inner wall of the support, and the surface of the limit frame (8) is at the end of the spring b (6) in the installed state. The support plate (4) is coaxial and connected to the bottom of the storage groove of the support plate (4); a through hole A (51) communicating with the interior of the fixed tube (5) is provided on the side wall of the fixed tube (5) on the side facing the processing station; a sealing cover (6) is sleeved on the outside of the fixed tube (5) and is rotatably connected thereto; a plurality of through holes B (61) are provided on the side wall of the sealing cover (6) in an annular array around the axis thereof; the through holes B (61) and the through holes A (51) are at the same height, and the through holes B (61) on the side facing the processing station are communicated with the through holes A (51); a plurality of through holes B (61) communicating with the through holes B (61) are provided on the outer wall of the sealing cover (6) The hole B (61) is connected to a guide tube A (7) corresponding to the hole B (61). An extrusion rod A (8) is arranged in the guide tube A (7) and is slidably connected to the inner wall thereof. The extrusion rod A (8) and the guide tube A (7) are both inserted into the slot B (113) on the corresponding side and are slidably connected thereto. The piston (9) is slidably arranged in the fixed tube (5). The piston (9) is located below the through hole A (51). Hydraulic oil is filled between the piston (9) and the through hole A (51). The hydraulic cylinder A (10) is connected to the support plate (4) and drives the piston (9) to slide in the fixed tube (5) along its radial direction.

3. The multi-station internal high-pressure flexible forming device according to claim 1, characterized in that: A water guide groove (41) is arranged at the bottom of the receiving groove of the support plate (4) at the loading station, and a collecting groove (42) is arranged at the bottom of the receiving groove of the support plate (4), each water guide groove (41) is connected to the collecting groove (42), and a water guide pipe (43) is inserted into the collecting groove (42) and connected thereto.

4. The multi-station internal high-pressure flexible forming device according to claim 3, characterized in that: The drainage assembly comprises a wedge-shaped sealing plate (12); a plurality of wedge-shaped holes (114) connected to the lower mold cavity (111) on the corresponding side are arranged in a ring array around the axis of the turntable (11); the wedge-shaped sealing plate (12) is located in the wedge-shaped hole (114) and is slidably connected to the inner wall thereof, and a roller is rotatably arranged at the bottom of the wedge-shaped sealing plate (12), and when the roller falls on the bottom surface of the receiving groove of the support plate (4), the upper end surface of the wedge-shaped sealing plate (12) just fits with the inner wall of the lower mold cavity (111); a guide groove (121) is arranged on the wedge-shaped sealing plate (12) along its radial direction, and when the roller falls in the collecting groove (42), the guide groove (121) conducts the collecting groove (42) and the lower mold cavity (111).

5. The multi-station internal high-pressure flexible forming device according to claim 1, characterized in that: The pressure boosting mechanism B comprises a guide tube B (16), an extrusion rod B (17) and a hydraulic cylinder B (18); the guide tube B (16) is arranged on the support plate (4) and communicated with a slot A (112) located at the processing station, and a side hole (161) communicating with the inside of the guide tube B (16) is arranged on the side wall of the guide tube B (16); the extrusion rod B (17) is located in the guide tube B (16) and is slidably connected with the inner wall of the guide tube B (16), and a hydraulic cylinder B (18) is arranged in the extrusion rod B (17) with only an opening facing the slot A ( The hydraulic cylinder B (18) is connected to an end of the guide tube B (16) away from the support plate (4), and a push rod of the hydraulic cylinder B (18) is inserted into the guide tube B (16) and connected to an end of the squeeze rod B (17) away from the slot A (112).

6. The multi-station internal high-pressure flexible forming device according to claim 1, characterized in that: The driving assembly A comprises a motor (15); a coaxial annular groove (115) is arranged on the arc surface of the turntable (11); an outer gear ring (13) is coaxially arranged on the arc surface of the annular groove (115); the motor (15) is connected to the support plate (4); the output end of the motor (15) is connected to the gear (14); and the gear (14) is meshed with the outer gear ring (13).

7. A method for multi-station internal high pressure flexible forming, using the multi-station internal high pressure flexible forming device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, placing a tube blank for processing a workpiece into a lower die cavity (111) on a loading station, starting a drive assembly A, and driving the turntable (11) to rotate so as to rotate the tube blank to the processing station, while continuing to place the tube blank in the lower die cavity 111 rotated to the loading station; S2, starting the driving component B, driving the upper die base (22) to descend and close the die with the lower die cavity (111) at the processing station on the turntable (11), and the exhaust pipe (23) is between the lower die cavity (111) at the processing station and the output end of the supercharging mechanism A; S3, start the high-pressure pump (3) to pump water from the water storage tank (2) and inject it into the tube blank through the booster mechanism B, the air in the tube blank is completely discharged along the exhaust pipe (23), the booster mechanism A and the booster mechanism B operate synchronously and pressurize the water in the tube blank, so that the tube blank fills the mold cavity, and the tube blank gradually expands until it is formed; S4, the turntable (11) rotates to rotate the molded part to the loading station, takes out the molded part and replaces the tube blank.

Images