Multi-station oil press with die changing structure for alloy steel

Abstract

The invention discloses an alloy steel multi-station oil press with a die changing structure, and relates to the field of oil presses, the alloy steel multi-station oil press comprises a mounting rack, a rotating seat and a station assembly, the top of the mounting rack is provided with an oil press body, the bottom of the oil press body is provided with a mounting plate, and the bottom of the mounting plate is provided with an upper die; lower molds are symmetrically arranged on the periphery of the top of the station assembly, the bottoms of inner cavities of the lower molds are movably connected with demolding assemblies, limiting discs are installed at the bottoms of the demolding assemblies, installation pieces are symmetrically installed on the sides, close to the lower molds, of the installation assemblies, and buffer assemblies are movably connected to the bottoms of inner cavities of the installation pieces. According to the alloy steel multi-station oil press with the die changing structure, during machining, the lower die does not need to be repeatedly subjected to disassembly and assembly actions of connecting structures such as bolts and positioning bolts, installation and replacement can be conducted through direct insertion and extraction, during machining, more time and labor are saved, meanwhile, multiple stations are achieved, and the machining efficiency is improved. And the working efficiency can be effectively improved.

Description

Technical Field

[0001] The invention relates to the field of hydraulic presses, and in particular to a multi-station hydraulic press for alloy steel with a die changing structure. Background Art

[0002] In addition to iron and carbon, other alloying elements are added to alloy steel. The main alloying elements of alloy steel are silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, aluminum, copper, boron, rare earth, etc. There are many types of alloy steel, which are usually divided into low alloy steel, medium alloy steel and high alloy steel according to the content of alloying elements.

[0003] When performing hydraulic processing on alloy steel, often only a single alloy steel can be processed. When a large number of alloy steels need to be hydraulically processed, the efficiency is low. After the processing is completed, the alloy steel and the finished alloy steel need to be repeatedly loaded and unloaded, which is more troublesome. At the same time, after the alloy steel is hydraulically processed, it is time-consuming and labor-intensive to demold it. When the mold needs to be replaced, it is also necessary to repeat more installation and disassembly steps, which seriously affects the overall efficiency.

[0004] Therefore, it is necessary to propose a multi-station hydraulic press for alloy steel with a die changing structure to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a multi-station hydraulic press for alloy steel with a die changing structure, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A multi-station hydraulic press for alloy steel with a die-changing structure, comprising a mounting frame, a rotating seat, and a station assembly, wherein a hydraulic press body is mounted on the top of the mounting frame, a mounting plate is mounted on the bottom of the hydraulic press body, an upper mold is mounted on the bottom of the mounting plate, and support blocks are symmetrically and movably connected around the top of the inner cavity of the rotating seat; A lower mold is symmetrically arranged around the top of the station assembly, a demoulding assembly is movably connected to the bottom of the inner cavity of the lower mold, a limiting plate is installed at the bottom of the demoulding assembly, and a supporting seat is arranged at the bottom of the limiting plate; The lower mold is symmetrically equipped with mounting components around, a fixing seat is installed on the top of the mounting frame, a mounting piece is symmetrically installed on one side of the mounting component close to the lower mold, and a buffer component is movably connected to the bottom of the inner cavity of the mounting piece.

[0007] Preferably, guide columns are symmetrically installed around the top of the mounting plate, and the guide columns are movably connected in the inner cavity of the mounting frame. The center of the upper mold and the center of the lower mold at its bottom are on the same axis, and a rotating cylinder is installed on the top of the rotating seat. The top of the rotating cylinder is installed in the center of the bottom of the workstation assembly through a rotating shaft.

[0008] Preferably, an arc-shaped groove is provided on the top of the rotating seat, a connecting block is installed on the top of the supporting block, the connecting block is movably connected in the inner cavity of the arc-shaped groove, the bottom of the supporting block is rotatably connected to a roller, the bottom of the roller fits against the bottom of the inner cavity of the arc-shaped groove, balls are symmetrically and movably connected on both sides of the top of the supporting block, the top of the ball fits against the top of the inner cavity of the rotating seat, and the top of the connecting block is installed at the bottom of the workstation assembly.

[0009] Preferably, the lower mold is a hollow structure whose top and bottom are connected to the outside world, and fixing rods are symmetrically installed around the top of the limit plate, and a first limit block is installed on the top of the fixing rod. The first limit block and the fixing rod are movably connected in the inner cavity of the lower mold, and a return spring is wound around the outer wall of the fixing rod, and the top of the return spring is installed on the bottom of the first limit block, and the bottom of the return spring is installed on the bottom of the inner cavity of the lower mold, and the top of the limit plate is attached to the bottom of the lower mold.

[0010] Preferably, a limiting groove is opened in the middle of the top of the support seat, support springs are symmetrically installed around the bottom of the inner cavity of the support seat, and a second limiting block is installed on the top of the support spring, and the size of the second limiting block is larger than the limiting groove.

[0011] Preferably, the second limit block is movably connected in the inner cavity of the support seat, a connecting column is installed in the center of the top of the second limit block, a main support block is installed on the top of the connecting column, the connecting column is movably connected in the inner cavity of the support seat through a limit groove, and the top of the main support block is attached to the bottom of the limit plate.

[0012] Preferably, the movable distance of the demoulding assembly is the same as the height of the main support block and the connecting column.

[0013] Preferably, the number of the fixing seats is consistent with the mounting assembly, a connecting rod is installed in the center of the top of the fixing seat, a first buffer spring is wound around the bottom of the outer wall of the connecting rod, the bottom of the first buffer spring is installed on the top of the fixing seat, the top of the first buffer spring is installed on the top of the mounting assembly, a limiting seat is installed on the top of the connecting rod, the mounting assembly is sleeved on the outer wall of the connecting rod, and the limiting seat is movably connected to the top of the mounting assembly.

[0014] Preferably, a mounting groove is provided on one side of the mounting piece close to the lower mold, the periphery of the lower mold is inserted into the inner cavity of the mounting piece through the mounting groove, and the bottom of the buffer assembly is fitted to the bottom of the periphery of the lower mold.

[0015] Preferably, movable blocks are symmetrically installed in the center of both sides of the buffer assembly, fixed columns are symmetrically installed at the bottom of both sides of the inner cavity of the mounting piece, a second buffer spring is wound around the outer wall of the fixed column, the bottom of the second buffer spring is installed at the bottom of the inner cavity of the mounting piece, the top of the second buffer spring is installed at the bottom of the movable block, and the movable block is sleeved on the outer wall of the fixed column. Beneficial Effects

[0016] Compared with the prior art, the present invention provides a multi-station hydraulic press for alloy steel with a die changing structure, which has the following beneficial effects: The multi-station hydraulic press for alloy steel with a mold changing structure can drive the upper mold to move up and down through the mounting plate by starting the hydraulic press body. When it moves to the bottom, it cooperates with the lower mold to process the alloy steel in its inner cavity. In addition, the four lower molds can effectively improve the work efficiency when processing the alloy steel. The multi-station hydraulic press for alloy steel with a mold-changing structure can drive the station components to rotate by starting the rotating cylinder, so that the lower mold that needs to be processed or has been processed can be transferred to the position, so that the hydraulic press body can quickly process the alloy steel, and the alloy steel after processing can also be detached from the bottom of the hydraulic press body for subsequent unloading processing. The multi-station hydraulic press for alloy steel with a mold-changing structure can support the station assembly through the provided connecting blocks and supporting blocks. When the station assembly moves, the supporting block is driven to move in the inner cavity of the rotating seat through the connecting block. The provided rollers can improve the efficiency of the movement of the supporting blocks, and can reduce the phenomenon of pauses in the movement of the station assembly due to friction, thereby ensuring the accuracy of the movement of the lower mold. At the same time, the provided balls can fill the gap between the supporting block and the top of the inner cavity of the rotating seat. When the hydraulic press body is working, the phenomenon of tilting of the station assembly due to the gap can be reduced, thereby further improving the stability of the station assembly. The multi-station hydraulic press for alloy steel with a mold changing structure has a demoulding component set up. After the alloy steel in the inner cavity of the lower mold is pressed down by the upper mold, it will move downward, so that the demoulding component can drive the limit plate to move downward. When the alloy steel processing is completed and the upper mold is separated from the alloy steel, the demoulding component can be lifted up by the set reset spring. At this time, the alloy steel can be ejected from the inner cavity of the lower mold, so that the staff can carry out the unloading processing of the finished alloy steel. The multi-station hydraulic press for alloy steel with a mold-changing structure can support the entire lower mold through a limit plate by means of a main support block, thereby preventing the lower mold from tilting, and the downward movement distance of the demoulding component is the same as the size of the main support block and the connecting column, thereby preventing the demoulding component from detaching from the bottom of the lower mold, and effectively improving the precision of the finished alloy steel product after processing, and the support spring can have a certain buffering effect during processing, and at the same time can improve the demoulding speed of the demoulding component, so that the finished alloy steel can detach from the lower mold faster. The multi-station hydraulic press for alloy steel with a mold-changing structure has mounting components arranged around the lower mold so that the four sides of the lower mold can be plugged into the inner cavity of the mounting component through mounting grooves, so that the installation of the lower mold can be directly completed. When it needs to be replaced, the lower mold can be directly moved up. This structure is convenient for replacing the lower mold according to processing requirements. At the same time, the replacement method is simple and fast. In conjunction with the main support block at the bottom of the lower mold, it can also support the lower mold. This structure does not require repeated disassembly and assembly of connection structures such as bolts and locating bolts on the lower mold. It can be installed and replaced by directly plugging and unplugging, which saves time and effort during processing. The multi-station hydraulic press for alloy steel with a die-changing structure has a buffer component arranged in the inner cavity of the mounting part. When the lower mold is pressurized, the buffer component drives the movable block to squeeze the second buffer spring, thereby achieving a buffering effect. At the same time, the mounting component is also pressed toward the bottom, thereby squeezing the first buffer spring, which can further improve the overall buffering effect and effectively increase the service life of the overall structure during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the mounting frame of the present invention; Figure 3 It is a structural schematic diagram of the rotating seat of the present invention; Figure 4 It is a structural schematic diagram of the lower mold of the present invention; Figure 5 It is a schematic structural diagram of the demoulding assembly of the present invention; Figure 6 Is a schematic diagram of the structure of the support seat of the present invention; Figure 7 It is a structural schematic diagram of the installation assembly of the present invention.

[0018] In the figure: 1. mounting frame; 2. hydraulic press body; 3. guide column; 4. mounting plate; 5. upper mold; 6. rotating seat; 7. arc groove; 8. connecting block; 9. supporting block; 10. ball; 11. roller; 12. station assembly; 13. lower mold; 14. demoulding assembly; 15. limiting plate; 16. fixing rod; 17. reset spring; 18. first limiting block; 19. supporting seat; 20. limiting groove; 21. supporting spring; 22. second limiting block; 23. connecting column; 24. main supporting block; 25. mounting assembly; 26. fixing seat; 27. connecting rod; 28. first buffer spring; 29. ​​limiting seat; 30. mounting piece; 31. mounting groove; 32. buffer assembly; 33. movable block; 34. fixing column; 35. second buffer spring; 36. rotating cylinder. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Specific embodiments

[0020] like Figure 1-Figure 3 As shown, a multi-station hydraulic press for alloy steel with a die-changing structure includes a mounting frame 1, a rotating seat 6, and a station assembly 12. A hydraulic press body 2 is mounted on the top of the mounting frame 1, a mounting plate 4 is mounted on the bottom of the hydraulic press body 2, an upper mold 5 is mounted on the bottom of the mounting plate 4, support blocks 9 are symmetrically and movably connected to the top of the inner cavity of the rotating seat 6, guide columns 3 are symmetrically mounted on the top of the mounting plate 4, and the guide columns 3 are movably connected to the inner cavity of the mounting frame 1. The center of the upper mold 5 and the center of the lower mold 13 at its bottom are on the same axis. The top of the rotating seat 6 A rotating cylinder 36 is installed, and the top of the rotating cylinder 36 is installed in the middle of the bottom of the station assembly 12 through a rotating shaft. An arc groove 7 is opened on the top of the rotating seat 6. A connecting block 8 is installed on the top of the supporting block 9. The connecting block 8 is movably connected in the inner cavity of the arc groove 7. The bottom of the supporting block 9 is rotatably connected to a roller 11, and the bottom of the roller 11 fits the bottom of the inner cavity of the arc groove 7. Balls 10 are symmetrically and movably connected on both sides of the top of the supporting block 9. The top of the ball 10 fits the top of the inner cavity of the rotating seat 6, and the top of the connecting block 8 is installed at the bottom of the station assembly 12; By starting the hydraulic press body 2, the upper mold 5 can be driven to move up and down through the mounting plate 4. When it moves to the bottom, it cooperates with the lower mold 13 to process the alloy steel in its inner cavity. In addition, the four lower molds 13 can effectively improve the working efficiency when processing the alloy steel. By starting the rotating cylinder 36, the station assembly 12 can be driven to rotate, so that the lower mold 13 that needs to be processed or has been processed can be moved to a different position, so that the hydraulic press body 2 can quickly process the alloy steel, and the alloy steel after processing can also be separated from the bottom of the hydraulic press body 2 for subsequent unloading processing; By means of the connection block 8 and the support block 9, the station assembly 12 can be supported. When the station assembly 12 moves, the connection block 8 drives the support block 9 to move in the inner cavity of the rotating seat 6. The roller 11 provided can improve the efficiency of the movement of the support block 9, and can reduce the phenomenon of pauses in the movement of the station assembly 12 due to friction, thereby ensuring the accuracy of the movement of the lower mold 13. At the same time, by means of the ball 10 provided, it can fill the gap between the support block 9 and the top of the inner cavity of the rotating seat 6. When the hydraulic press body 2 is working, the phenomenon of the station assembly 12 tilting due to the gap can be reduced, thereby further improving the stability of the station assembly 12. Specific embodiments

[0021] like Figure 1 , Figure 4 , Figure 5 , Figure 6 As shown, a multi-station hydraulic press for alloy steel with a mold changing structure, a lower mold 13 is symmetrically arranged around the top of the station assembly 12, a demoulding assembly 14 is movably connected to the bottom of the inner cavity of the lower mold 13, a limiting plate 15 is installed at the bottom of the demoulding assembly 14, a support seat 19 is arranged at the bottom of the limiting plate 15, the lower mold 13 is a cavity structure with the top and bottom communicating with the outside world, a fixing rod 16 is symmetrically installed around the top of the limiting plate 15, a first limiting block 18 is installed on the top of the fixing rod 16, the first limiting block 18 and the fixing rod 16 are movably connected in the inner cavity of the lower mold 13, a return spring 17 is wound around the outer wall of the fixing rod 16, the top of the return spring 17 is installed at the bottom of the first limiting block 18, and the bottom of the return spring 17 is installed at the bottom of the lower mold 1 3, the top of the limiting plate 15 is attached to the bottom of the lower mold 13, a limiting groove 20 is provided in the middle of the top of the support seat 19, support springs 21 are symmetrically installed around the bottom of the inner cavity of the support seat 19, a second limiting block 22 is installed on the top of the support spring 21, the size of the second limiting block 22 is larger than the limiting groove 20, the second limiting block 22 is movably connected in the inner cavity of the support seat 19, a connecting column 23 is installed in the middle of the top of the second limiting block 22, a main supporting block 24 is installed on the top of the connecting column 23, the connecting column 23 is movably connected in the inner cavity of the support seat 19 through the limiting groove 20, the top of the main supporting block 24 is attached to the bottom of the limiting plate 15, and the movable distance of the demoulding component 14 is the same as the height of the main supporting block 24 and the connecting column 23; Through the demoulding assembly 14, the alloy steel in the inner cavity of the lower mold 13 will move downward after being pressed downward by the upper mold 5, so that the demoulding assembly 14 can drive the limit plate 15 to move downward. When the alloy steel processing is completed and the upper mold 5 is separated from the alloy steel, the demoulding assembly 14 can be lifted up by the reset spring 17, and the alloy steel can be ejected from the inner cavity of the lower mold 13, so that the staff can conveniently carry out the material processing of the finished alloy steel; By setting the main support block 24, the lower mold 13 can be supported as a whole through the limit plate 15, so that it can be avoided from tilting, and the downward movement distance of the demolding component 14 is the same as the size of the main support block 24 and the connecting column 23, thereby preventing the demolding component 14 from separating from the bottom of the lower mold 13, which can effectively improve the accuracy of the finished alloy steel product after processing, and by setting the support spring 21, a certain buffering effect can be achieved during processing, and at the same time, the demolding speed of the demolding component 14 can be improved, so that the finished alloy steel can be separated from the lower mold 13 faster. Specific embodiments

[0022] like Figure 1 , Figure 4 , Figure 7 As shown, a multi-station hydraulic press for alloy steel with a die-changing structure, a mounting assembly 25 is symmetrically installed around the lower mold 13, a fixing seat 26 is installed on the top of the mounting frame 1, a mounting member 30 is symmetrically installed on the side of the mounting assembly 25 close to the lower mold 13, and a buffer assembly 32 is movably connected to the bottom of the inner cavity of the mounting member 30, the number of the fixing seats 26 is the same as that of the mounting assembly 25, a connecting rod 27 is installed in the middle of the top of the fixing seat 26, a first buffer spring 28 is wound around the bottom of the outer wall of the connecting rod 27, the bottom of the first buffer spring 28 is installed on the top of the fixing seat 26, the top of the first buffer spring 28 is installed on the top of the mounting assembly 25, a limited position seat 29 is installed on the top of the connecting rod 27, and the mounting assembly 25 The mounting member 30 is sleeved on the outer wall of the connecting rod 27, and the limiting seat 29 is movably connected to the top of the mounting assembly 25. A mounting groove 31 is provided on the side of the mounting member 30 close to the lower mold 13. The four sides of the lower mold 13 are inserted into the inner cavity of the mounting member 30 through the mounting groove 31. The bottom of the buffer assembly 32 fits the bottom of the four sides of the lower mold 13. Movable blocks 33 are symmetrically installed in the middle of the two sides of the buffer assembly 32. Fixed columns 34 are symmetrically installed at the bottom of the two sides of the inner cavity of the mounting member 30. The outer wall of the fixed column 34 is wound with a second buffer spring 35. The bottom of the second buffer spring 35 is installed at the bottom of the inner cavity of the mounting member 30. The top of the second buffer spring 35 is installed at the bottom of the movable block 33. The movable block 33 is sleeved on the outer wall of the fixed column 34. By means of the mounting components 25 arranged around the lower mold 13, the four sides of the lower mold 13 can be plugged into the inner cavity of the mounting member 30 through the mounting grooves 31, so that the installation of the lower mold 13 can be directly completed. When it needs to be replaced, the lower mold 13 can be directly moved up. This structure is convenient for replacing the lower mold 13 according to processing requirements. At the same time, the replacement method is simple and fast. In conjunction with the main support block 24 at the bottom of the lower mold 13, it can also support the lower mold 13. This structure does not require repeated disassembly and assembly of the connection structure such as bolts and positioning bolts on the lower mold 13. It can be installed and replaced by directly plugging and unplugging, which saves time and effort during processing. By means of the buffer component 32 arranged in the inner cavity of the mounting part 30, when the lower mold 13 is pressurized, the movable block 33 will be driven by the buffer component 32 to squeeze the second buffer spring 35, thereby achieving a buffering effect. At the same time, the mounting component 25 will also be pressed toward the bottom, thereby squeezing the first buffer spring 28, which can further improve the overall buffering effect and effectively increase the service life of the overall structure during processing.

[0023] It should be noted that the present invention is a multi-station hydraulic press for alloy steel with a die-changing structure. When in use, a suitable lower die 13 is selected to be installed, and the surroundings of the lower die 13 are inserted into the mounting groove 31 so that the surroundings of the lower die 13 can be inserted into the inner cavity of the mounting member 30. At this time, the installation of the lower die 13 is completed; The alloy steel is placed in the inner cavity of the entire lower mold 13 at the top of the station assembly 12, and the rotating cylinder 36 is started to drive the station assembly 12 to rotate. When the station assembly 12 rotates, it will drive the connecting block 8 to rotate in the inner cavity of the arc groove 7, and the connecting block 8 will drive the supporting block 9 to rotate in the inner cavity of the rotating seat 6. At this time, the roller 11 at the bottom of the supporting block 9 will roll at the bottom of the inner cavity of the arc groove 7, and the ball 10 at the top of the supporting block 9 will roll at the top of the inner cavity of the rotating seat 6; When one of the lower molds 13 moves to the same axis as the upper mold 5, the movement of the station assembly 12 is stopped, the hydraulic press body 2 is started, and the upper mold 5 is driven downward through the mounting plate 4. When the upper mold 5 enters the inner cavity of the lower mold 13, the alloy steel can be processed; After the alloy steel is compressed, it will drive the demoulding assembly 14 to move to the bottom, and the demoulding assembly 14 will drive the limit plate 15 to move. The limit plate 15 will drive the return spring 17 to stretch. At the same time, the limit plate 15 will drive the main support block 24 to move to the bottom. At this time, the main support block 24 will squeeze the support spring 21 through the second limit block 22, so as to achieve a buffering effect. At the same time, the lower mold 13 is pressed and drives the mounting assembly 25 and the movable block 33 to be pressed downward. The mounting assembly 25 moves toward the bottom of the outer wall of the connecting rod 27 and squeezes the first buffer spring 28. The buffer assembly 32 drives the movable block 33 to squeeze the second buffer spring 35. At this time, the overall buffering effect can be improved. When the alloy steel processing is completed, the upper mold 5 is lifted up, and the support spring 21 and the return spring 17 will lift the demoulding assembly 14, so that the finished alloy steel product after processing can be lifted up, thereby completing the demoulding work of the alloy steel, and starting the station assembly 12 to move the lower mold 13 containing the finished alloy steel out of the range of the hydraulic press body 2. At this time, the finished alloy steel can be unloaded, and the upper mold 5 can be started again to process the subsequent alloy steel; When the lower mold 13 needs to be replaced, the lower mold 13 can be directly lifted up to separate it from the inner cavity of the mounting member 30. In actual work, the position of the fixing seats 26 around it can be adjusted according to the size of the alloy steel and the size of the lower mold 13, so that the position of the mounting assembly 25 can be adjusted to meet the installation requirements of the lower mold 13.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-station hydraulic press for alloy steel with a die-changing structure, comprising a mounting frame (1), a rotating seat (6), and a station assembly (12), characterized in that: The top of the mounting frame (1) is mounted with a hydraulic press body (2), the bottom of the hydraulic press body (2) is mounted with a mounting plate (4), the bottom of the mounting plate (4) is mounted with an upper mold (5), and the top of the inner cavity of the rotating seat (6) is symmetrically and movably connected with support blocks (9) on all sides; A lower mold (13) is symmetrically arranged around the top of the workstation assembly (12); a demoulding assembly (14) is movably connected to the bottom of the inner cavity of the lower mold (13); a limiting plate (15) is installed at the bottom of the demoulding assembly (14); and a support seat (19) is arranged at the bottom of the limiting plate (15); The lower mold (13) is symmetrically provided with mounting components (25), the top of the mounting frame (1) is provided with a fixing seat (26), a mounting piece (30) is symmetrically provided on one side of the mounting component (25) close to the lower mold (13), and a buffer component (32) is movably connected to the bottom of the inner cavity of the mounting piece (30).

2. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 1, characterized in that: Guide columns (3) are symmetrically mounted around the top of the mounting plate (4), and the guide columns (3) are movably connected in the inner cavity of the mounting frame (1). The center of the upper mold (5) and the center of the lower mold (13) at the bottom are coaxial, and a rotating cylinder (36) is mounted on the top of the rotating seat (6). The top of the rotating cylinder (36) is mounted in the middle of the bottom of the station assembly (12) through a rotating shaft.

3. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 1, characterized in that: The top of the rotating seat (6) is provided with an arc groove (7), the top of the supporting block (9) is provided with a connecting block (8), the connecting block (8) is movably connected in the inner cavity of the arc groove (7), the bottom of the supporting block (9) is rotatably connected with a roller (11), the bottom of the roller (11) is fitted on the bottom of the inner cavity of the arc groove (7), the two sides of the top of the supporting block (9) are symmetrically and movably connected with balls (10), the top of the balls (10) is fitted on the top of the inner cavity of the rotating seat (6), and the top of the connecting block (8) is installed on the bottom of the station assembly (12).

4. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 1, characterized in that: The lower mold (13) is a hollow structure with the top and bottom communicating with the outside world. Fixed rods (16) are symmetrically installed around the top of the limit plate (15). A first limit block (18) is installed on the top of the fixed rod (16). The first limit block (18) and the fixed rod (16) are movably connected in the inner cavity of the lower mold (13). A return spring (17) is wound around the outer wall of the fixed rod (16). The top of the return spring (17) is installed on the bottom of the first limit block (18). The bottom of the return spring (17) is installed on the bottom of the inner cavity of the lower mold (13). The top of the limit plate (15) is attached to the bottom of the lower mold (13).

5. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 1, characterized in that: A limiting groove (20) is provided in the middle of the top of the support seat (19), support springs (21) are symmetrically mounted around the bottom of the inner cavity of the support seat (19), and a second limiting block (22) is mounted on the top of the support spring (21), wherein the size of the second limiting block (22) is larger than the limiting groove (20).

6. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 5, characterized in that: The second limiting block (22) is movably connected in the inner cavity of the support seat (19); a connecting column (23) is installed in the middle of the top of the second limiting block (22); a main supporting block (24) is installed on the top of the connecting column (23); the connecting column (23) is movably connected in the inner cavity of the support seat (19) through the limiting groove (20); and the top of the main supporting block (24) is attached to the bottom of the limiting plate (15).

7. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 6, characterized in that: The demoulding assembly (14) can move a distance that is the same as the height of the main support block (24) and the connecting column (23).

8. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 1, characterized in that: The number of the fixing seats (26) is consistent with the number of the mounting components (25); a connecting rod (27) is installed in the middle of the top of the fixing seat (26); a first buffer spring (28) is wound around the bottom of the outer wall of the connecting rod (27); the bottom of the first buffer spring (28) is installed on the top of the fixing seat (26); the top of the first buffer spring (28) is installed on the top of the mounting component (25); a limiting seat (29) is installed on the top of the connecting rod (27); the mounting component (25) is sleeved on the outer wall of the connecting rod (27); and the limiting seat (29) is movably connected to the top of the mounting component (25).

9. The multi-station hydraulic press for alloy steel with a die changing structure according to claim 1, characterized in that: A mounting groove (31) is provided on one side of the mounting member (30) close to the lower mold (13); the periphery of the lower mold (13) is inserted into the inner cavity of the mounting member (30) through the mounting groove (31); and the bottom of the buffer assembly (32) is fitted to the bottom of the periphery of the lower mold (13).

10. The multi-station hydraulic press for alloy steel with a die-changing structure according to claim 1, characterized in that: Movable blocks (33) are symmetrically mounted in the middle of both sides of the buffer assembly (32); fixed columns (34) are symmetrically mounted at the bottom of both sides of the inner cavity of the mounting member (30); a second buffer spring (35) is wound around the outer wall of the fixed column (34); the bottom of the second buffer spring (35) is mounted on the bottom of the inner cavity of the mounting member (30); the top of the second buffer spring (35) is mounted on the bottom of the movable block (33); and the movable block (33) is sleeved on the outer wall of the fixed column (34).

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