Four-post hydraulic press for open die forging

Abstract

The application discloses a four-column type free forging hydraulic press and belongs to the technical field of magnesium alloy forging equipment. The four-column type free forging hydraulic press comprises a main frame, a placing table, a displacement track, a return oil cylinder, a placing platform, a clamping assembly, a linkage assembly, a hydraulic slide and an oil cylinder. The main frame is installed in the placing platform. The driving assembly is installed on the displacement track. The placing table is drivingly connected to the bottom side of the main frame and the displacement track. The oil cylinders are installed on the upper end of the main frame. The bottom of the oil cylinder penetrates through the bottom surface of the bottom of the main frame. The bottom end of the oil cylinder is connected with the hydraulic slide. The hydraulic slide is drivingly connected to the main frame. The return oil cylinders are arranged in pairs. The top end of the return oil cylinder is connected with the hydraulic slide. The clamping assemblies are arranged in pairs and installed on the upper surface of the bottom of the main frame. The linkage assemblies are arranged in pairs and connected with the side edge of the hydraulic slide. The four-column type free forging hydraulic press can solve the problem of low machining efficiency caused by the fact that the lifting of the upper anvil and the reversing of the workpiece cannot be realized synchronously in the prior art. The forging efficiency and the automation degree are improved.

Description

Technical Field

[0001] This invention relates to the field of magnesium alloy forging equipment technology, specifically to a four-column free forging hydraulic press. Background Technology

[0002] Forging hydraulic presses are equipment used for secondary processing of cast magnesium alloys. Their purpose is to remove air from the magnesium alloy and perform secondary plasticization.

[0003] For existing hydraulic presses, the magnesium alloy needs to be reversed and processed at various angles during the processing. Most existing equipment hammers a position multiple times, then lifts the upper anvil, reverses the direction through the side clamping device, and then hammers again. Most hydraulic presses do not have clamping devices, which means that if the angle of the parts is adjusted manually, it will not only increase labor costs, but also have a low degree of automation, increase the forging process time, and significantly reduce efficiency.

[0004] Therefore, how to provide a four-column free forging hydraulic press that solves the defects in the structure of existing hydraulic presses is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To address this issue, the present invention provides a four-column free forging hydraulic press to solve the problem of low processing efficiency caused by the inability to synchronize the lifting of the anvil and the reversal of the workpiece in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention discloses a four-column free forging hydraulic press, comprising:

[0008] The placement platform has a hollow internal structure, and a main frame is installed in the placement platform;

[0009] Displacement tracks, arranged in pairs, are installed on the left and right surfaces of the bottom side of the main frame. The bottom end of the displacement track is placed in the hollow structure, and a drive assembly is installed on the displacement track.

[0010] The storage platform is connected to the bottom side of the main frame and the displacement track, and one end of the drive assembly abuts against the side surface of the storage platform.

[0011] Several hydraulic cylinders are installed on the upper end of the main frame. The bottom of each hydraulic cylinder protrudes through the bottom surface of the main frame. A hydraulic slider is connected to the bottom end of each hydraulic cylinder, and the hydraulic slider is drivenly connected to the main frame.

[0012] The return cylinders are arranged in pairs and installed in the hollow structure, with the top of the return cylinder connected to the hydraulic slider;

[0013] Clamping components, arranged in pairs, are mounted on the bottom upper surface of the main frame;

[0014] The linkage components are arranged in pairs, with the upper end connected to the side of the hydraulic slider and the bottom of the linkage component being connected to the outer end of the clamping component.

[0015] In one possible implementation, the clamping component includes:

[0016] The housing is installed, and a lifting cylinder is installed at the bottom, with the bottom of the lifting cylinder installed on the upper surface of the base block of the main frame.

[0017] A pair of driving components are installed in the mounting housing, with both ends of the driving components extending out of the sidewalls of the mounting housing.

[0018] A rotating component is installed in the mounting housing, with both ends of the rotating component extending out of the sidewalls of the mounting housing, and the rotating component is disposed between the two driving components;

[0019] The chuck is connected at one end to the ends of the rotating component and the driving component.

[0020] In one possible implementation, the chuck includes:

[0021] The first connecting block has a socket on one end surface. The sockets are arranged in pairs. A limit hole is opened on the side wall of the socket. One end of the driving member is inserted into the socket.

[0022] The second connecting block has a concave structure on one end surface. The first connecting block also has a through hole that passes through the first connecting block. One end of the through hole extends to the other end surface of the second connecting block. The through hole is located between the two insertion holes. The end of the rotating component is inserted into the through hole.

[0023] The limiting grooves are arranged in pairs and are formed in the second connecting block.

[0024] In one possible implementation, the driving component includes:

[0025] A first guide sleeve is installed in the mounting housing, and a limit ring is installed on the outer surface of the first guide sleeve.

[0026] The second guide sleeve rod is installed in the mounting housing at one end, and a rotating sleeve rod is connected to the other end of the second guide sleeve rod. A first gear is installed on the outer side of one end of the rotating sleeve rod.

[0027] A drive rod passes through the first guide sleeve and the second guide sleeve. One end of the drive rod is connected to a connector. A limiting ring is installed on the outside of the connector. The connector is inserted into the insertion hole. The limiting ring is set in the limiting hole. A limiting block is installed at the other end of the drive rod. An external thread structure is provided on the outer surface of the drive rod.

[0028] In one possible implementation, limiting pieces are installed on the outer sides of the first guide sleeve and the second guide sleeve, and internal thread structures are installed inside the first guide sleeve and the second guide sleeve.

[0029] In one possible implementation, the rotating member includes:

[0030] A sleeve is installed in the mounting housing, and a second gear is installed on the outer side of the sleeve;

[0031] A transmission rod is connected to the sleeve. An installation head is installed on one end of the transmission rod. Locking blocks are installed on the upper and lower sides of the outer end of the installation head. The locking blocks are installed in the limiting groove.

[0032] A limiting sleeve is inserted at one end into the end of the sleeve, and the transmission rod passes through the limiting sleeve.

[0033] In one possible implementation, the linkage component includes:

[0034] Mounting block, mounted on the side wall of the hydraulic slider;

[0035] A drive rack is mounted at the bottom of the mounting block;

[0036] A pair of lifting rods are installed at the bottom of the mounting block, and the lifting rods are located inside the drive rack.

[0037] The staggered racks are arranged in pairs and respectively installed on the lifting rod. The staggered racks and the driving rack mesh with the clamping assembly for transmission.

[0038] In one possible implementation, the drive rack and the lifting rod are connected by a U-shaped block.

[0039] In one possible implementation, a rotary forging worktable is mounted on the platform, and an anvil is mounted on the bottom surface of the hydraulic slider.

[0040] This invention combines the lifting and lowering movements of the clamping assembly and the hydraulic slider by setting up a linkage component. This allows the clamping assembly to move away from the processing position when the workpiece is being forged and hammered, preventing interference with the processing. When the hydraulic slider moves upward a considerable distance, the linkage component drives the clamping assembly to clamp and reposition the workpiece. When the hydraulic slider moves downward for processing, the linkage component can again drive the clamping assembly away from the workpiece. This operation can significantly improve processing efficiency and increase the degree of automation. Attached Figure Description

[0041] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0042] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0043] Figure 1 A perspective view of a four-column free forging hydraulic press provided for this invention;

[0044] Figure 2 A perspective view of the clamping assembly provided by the present invention;

[0045] Figure 3 A perspective view of the chuck provided by the present invention;

[0046] Figure 4 A cross-sectional view of the second connecting block provided by the present invention;

[0047] Figure 5 A perspective view of the driving component provided by the present invention;

[0048] Figure 6 A cross-sectional view of the rotating component provided by the present invention;

[0049] Figure 7 A perspective view of the linkage component provided by the present invention;

[0050] Figure 8 A perspective view of the misaligned rack provided by the present invention;

[0051] Figure 9 A perspective view of the drive rack provided by the present invention;

[0052] Figure 10 A perspective view of the forging workbench provided by the present invention;

[0053] In the diagram: 2 Main frame; 3 Storage platform; 4 Displacement track; 5 Return cylinder; 6 Placement platform; 7 Clamping assembly; 71 Rotating component; 711 Sleeve; 712 Second gear; 713 Transmission rod; 714 Mounting head; 715 Clamping block; 716 Limiting sleeve; 72 Driving component; 721 Limiting block; 722 First gear; 723 Driving rod; 724 Limiting ring; 725 Connector; 726 Limiting ring; 727 First guide sleeve rod; 7 28 Second guide sleeve; 729 Rotating sleeve; 73 Mounting housing; 74 Lifting cylinder; 75 Chuck; 751 First connecting block; 752 Insertion hole; 753 Limiting hole; 754 Through hole; 755 Concave structure; 756 Second connecting block; 757 Limiting groove; 8 Linkage assembly; 81 Mounting block; 82 Lifting rod; 83 Drive rack; 84 Offset rack; 85 U-shaped block; 9 Hydraulic slider; 10 Oil cylinder; 11 Worktable; 12 Upper anvil. Detailed Implementation

[0054] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Please refer to Figures 1-10 The present invention will now describe a four-column free forging hydraulic press, which consists of nine parts, as follows: Figure 1The system includes a main frame 2, a storage platform 3, a displacement rail 4, a return cylinder 5, a placement platform 6, a clamping assembly 7, a linkage assembly 8, a hydraulic slider 9, and a cylinder 10. The placement platform 6 has a hollow internal structure, and the main frame 2 is installed inside the placement platform 6. The displacement rails 4 are arranged in pairs and installed on the left and right surfaces of the bottom side of the main frame 2. The bottom end of the displacement rail 4 is placed in the hollow structure, and a drive assembly is installed on the displacement rail 4. The storage platform 3 is connected to the bottom side of the main frame 2 and the displacement rail 4, and one end of the drive assembly abuts against the side of the storage platform 3. On the surface, several hydraulic cylinders 10 are installed on the upper end of the main frame 2. The bottom of the hydraulic cylinders 10 protrudes from the bottom surface of the main frame 2. The bottom end of the hydraulic cylinders 10 is connected to a hydraulic slider 9. The hydraulic slider 9 is driven and connected to the main frame 2. Return cylinders 5 are arranged in pairs and installed in the hollow structure. The top of the return cylinder 5 is connected to the hydraulic slider 9. Clamping components 7 are arranged in pairs and installed on the bottom upper surface of the main frame 2. Linkage components 8 are arranged in pairs. The upper end is connected to the side of the hydraulic slider 9, and the bottom of the linkage component 8 is driven and connected to the outer end of the clamping component 7.

[0056] In use, the present invention utilizes a drive assembly to displace the platform 3, placing the rotary forging worktable 11 below the workpiece. Then, the workpiece is placed above the rotary forging worktable 11, and the drive assembly again displaces the platform 3, positioning it directly opposite the anvil 12. At this time, oil is supplied to the lifting cylinder 74, causing the mounting housing 73 to move upwards. During this upward movement, the first gear 722 moves along the drive rack 83. As the drive rack 83 drives the rotating sleeve 729 to rotate, the internal thread of the rotating sleeve 729 engages with the external thread of the drive rod 723. With only the rotating sleeve 729 rotating, the drive rod 723 rotates and translates along its internal thread, causing the end of the drive rod 723 to displace the first connecting block 751. This displacement of the first connecting block 751 then pushes the second connecting block 751. As the connecting block 756 approaches the workpiece, and the mounting housing 73 moves upward, the second gear 712 of the rotating component 71 gradually approaches and meshes with the misaligned rack 84. After the misaligned rack 84 meshes with the second gear 712, the second gear 712 moves along the misaligned rack 84 and rotates. The rotation of the second gear 712 causes the entire rotating component 71 to rotate. By utilizing the cooperation between the locking block 715 and the limiting groove 757, the second connecting block 756 rotates. This method of moving forward and rotating at the same time allows for quick clamping of the workpiece and reversal, and can clamp workpieces of various shapes. After clamping adjustment or reversal is completed, the hydraulic cylinder 10 supplies oil to drive the hydraulic slider 9 to move, and the upper anvil 12 is used to process the workpiece. The displacement of the hydraulic slider 9 will drive the linkage component 8 to move downward. During the downward movement of the linkage component 8, the movement of the drive rack 83 will drive the first gear 722 to rotate again. This time, the rotation direction of the first gear 722 is opposite, so the drive rod 723 will move in the opposite direction, taking the first connecting block 751 away from the second connecting block 756. During the downward movement of the linkage component 8, another misaligned rack 84 will also mesh with the second gear 712, causing the second gear 712 to rotate. At this time, the rotating component 71 will rotate. At this time, oil needs to be supplied to the sleeve 711 to push the second connecting block 756 out of the first connecting block 751. The hydraulic oil drives the transmission rod 713 to move and pull the second connecting block 756 back. In this way, the clamping component 7 will not affect the forging during the processing. When machining other positions of the workpiece, the return cylinder 5 drives the hydraulic slider 9 to move upward. At this time, the linkage component 8 moves upward. The displacement of the linkage component 8, through the drive rack 83 and the misaligned rack 84, drives the rotating component 71 and the drive component 72 to move, so that the chuck 75 approaches the workpiece and clamps and reverses the workpiece. This operation links the lifting of the upper anvil 12 with the reversal of the workpiece, which can significantly improve the machining efficiency.

[0057] Based on the previous embodiment, such as Figure 2The clamping assembly 7 includes a rotating component 71, a driving component 72, a mounting housing 73, a lifting cylinder 74, and a chuck 75. The lifting cylinder 74 is mounted on the bottom of the mounting housing 73, and its bottom is mounted on the upper surface of the base block of the main frame 2. The driving components 72 are arranged in pairs and installed in the mounting housing 73, with both ends of the driving components 72 protruding from the side walls of the mounting housing 73. The rotating component 71 is installed in the mounting housing 73, with both ends of the rotating component 71 protruding from the side walls of the mounting housing 73, and is positioned between the two driving components 72. One end of the chuck 75 is connected to the ends of the rotating component 71 and the driving component 72. The rotating component 71 drives the chuck 75 to rotate, allowing for reversing the workpiece during processing. The driving component 72 drives the chuck 75 to approach and clamp the workpiece. The lifting cylinder 74 is used to lift the mounting housing 73, bringing it to a position flush with the workpiece.

[0058] Based on the previous embodiment, such as Figures 3-4 The chuck 75 includes a first connecting block 751, a socket 752, a limiting hole 753, a through hole 754, a concave structure 755, a second connecting block 756, and a limiting groove 757. The first connecting block 751 has a socket 752 on one end surface, and the sockets 752 are arranged in pairs. The side wall of the socket 752 has a limiting hole 753. One end of the driving member 72 is inserted into the socket 752. The second connecting block 756 has a concave structure 755 on one end surface. The first connecting block 751 also has a through hole 754, which passes through the first connecting block 751. One end of the through hole 754 extends to the other end surface of the second connecting block 756. The through hole 754 is located between the two sockets 752. The end of the rotating member 71 is inserted into the through hole 754. The limiting groove 757 is arranged in pairs and is formed in the second connecting block 756. The first connecting block 751 is used to connect with the driving component 72, and the insertion hole 752 is provided for inserting the connector 725. The limiting hole 753 is used to limit the connector 725. By setting the limiting ring 724 in the limiting hole 753, the driving rod 723 will rotate, which will carry the connector 725 to rotate. The limiting ring 724 makes the connector 725 rotate in the first connecting block 751, while the driving rod 723 will translate during the rotation. At this time, the limiting ring can be used to make the connector 725 rotate in the first connecting block 751. 724 abuts against the limiting hole 753, causing the first connecting block 751 to move. The second connecting block 756 and the through hole 754 in the first connecting block 751 are for the rotating component 71 to pass through, so that the rotating component 71 can be connected to the second connecting block 756. The limiting groove 757 is used to install the locking block 715, so that when the rotating component 71 rotates, the limiting groove 757 and the locking block 715 abut against each other to drive the second connecting block 756 to rotate. The concave structure 755 is designed to accommodate workpieces of various shapes for support.

[0059] Based on the previous embodiment, such as Figure 5 The driving component 72 includes a limiting block 721, a first gear 722, a driving rod 723, a limiting ring 724, a connector 725, a limiting ring 726, a first guide sleeve 727, a second guide sleeve 728, and a rotating sleeve 729. The first guide sleeve 727 is installed in the mounting housing 73, and the limiting ring 726 is installed on the outer surface of the first guide sleeve 727. One end of the second guide sleeve 728 is installed in the mounting housing 73, and the other end of the second guide sleeve 728 is connected to the rotating sleeve. 729, a first gear 722 is installed on the outer side of one end of the rotating sleeve 729, a drive rod 723 passes through the first guide sleeve 727 and the second guide sleeve 728, a connector 725 is connected to one end of the drive rod 723, a limiting ring 724 is installed on the outer side of the connector 725, the connector 725 is inserted into the insertion hole 752, the limiting ring 724 is set in the limiting hole 753, a limiting block 721 is installed at the other end of the drive rod 723, and an external thread structure is provided on the outer surface of the drive rod 723. When the drive rack 83 drives the first gear 722 to rotate, the rotating sleeve 729 rotates synchronously, and the second guide sleeve 728 also rotates. However, by using the rotating sleeve 729 and the limiting piece, the second guide sleeve 728 is locked onto the side wall of the mounting housing 73, so the second guide sleeve 728 can only rotate. The internal thread structure of the second guide sleeve 728 allows the drive rod 723 to rotate and translate, causing the drive rod 723 to push the chuck 75 to translate. During the rotation and translation process, the drive rod 723 also rotates and translates along the internal thread structure of the first guide sleeve 727. The first guide sleeve 727 plays a role in stabilizing the translation of the drive rod 723. The limiting block 721 is used to limit the translation distance of the drive rod 723. The limiting ring 726 on the first guide sleeve 727 cooperates with the limiting piece to lock the first guide sleeve 727 onto the side wall of the mounting housing 73.

[0060] Based on the previous embodiment, limiting pieces are installed on the outer sides of the first guide sleeve 727 and the second guide sleeve 728, and internal thread structures are installed inside the first guide sleeve 727 and the second guide sleeve 728. If the movement of the drive rod 723 is not affected, the first guide sleeve 727 may not have an internal thread structure.

[0061] Based on the previous embodiment, such as Figure 6The rotating component 71 includes a sleeve 711, a second gear 712, a transmission rod 713, a mounting head 714, a locking block 715, and a limiting sleeve 716. The sleeve 711 is installed in the mounting housing 73. The second gear 712 is installed on the outside of the sleeve 711. The transmission rod 713 is connected to the sleeve 711. The mounting head 714 is installed on one end of the transmission rod 713. The locking blocks 715 are installed on the upper and lower sides of the outer end of the mounting head 714. The locking blocks 715 are installed in the limiting groove 757. One end of the limiting sleeve 716 is inserted into the end of the sleeve 711. The transmission rod 713 passes through the limiting sleeve 716. The sleeve 711 is connected to the oil pump. When the first connecting block 751 drives the second connecting block 756 to move, the transmission rod 713 will be pulled out from the sleeve 711. Therefore, the oil pump needs to drive the transmission rod 713 to reset. Moreover, when processing narrow parts such as tires, because the pushing distance of the driving component 72 is limited, the oil cylinder needs to be used to drive the transmission rod 713 to move and press the second connecting block 756 against the workpiece. The second gear 712 is used to drive the rotating component 71 and the chuck 75 to rotate, and the limiting sleeve 716 is used to limit the translation of the transmission rod 713.

[0062] Based on the previous embodiment, such as Figures 7-8 The linkage component 8 includes a mounting block 81, a lifting rod 82, a drive rack 83, and a misaligned rack 84. The mounting block 81 is mounted on the side wall of the hydraulic slider 9. The drive rack 83 is mounted on the bottom of the mounting block 81. The lifting rods 82 are arranged in pairs and mounted on the bottom of the mounting block 81, with the lifting rods 82 positioned inside the drive rack 83. The misaligned racks 84 are arranged in pairs and mounted on the lifting rods 82 respectively. The misaligned racks 84 and the drive rack 83 mesh with the clamping component 7 for transmission. The mounting block 81 is used to connect the drive rack 83 and the lifting rod 82. The drive rack 83 is used to drive the first gear 722 to rotate. The two misaligned racks 84 are used to control the rotation of the rotating component 71 during the first clamping adjustment to adjust the position before processing. The other misaligned rack 84 is used to drive the rotation of the rotating component 71 during processing, thereby adjusting the workpiece angle through the chuck 75 for continued processing.

[0063] Based on the previous embodiment, such as Figure 9 The drive rack 83 and the lifting rod 82 are connected by a U-shaped block 85.

[0064] Based on the previous embodiment, such as Figure 10 A rotary forging worktable 11 is installed on the platform 3, and an upper anvil 12 is installed on the bottom surface of the hydraulic slider 9.

[0065] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A four-column free forging hydraulic press, characterized in that, include: The placement platform (6) has a hollow internal structure, and the main frame (2) is installed in the placement platform (6). Displacement rails (4) are arranged in pairs and installed on the left and right surfaces of the bottom side of the main frame (2). The bottom end of the displacement rails (4) is placed in the hollow structure. A drive assembly is installed on the displacement rails (4). The storage platform (3) is connected to the bottom side of the main frame (2) and the displacement track (4) by transmission, and one end of the drive component abuts against the side surface of the storage platform (3); Several hydraulic cylinders (10) are installed on the upper end of the main frame (2). The bottom of the hydraulic cylinder (10) extends through the bottom surface of the main frame (2). The bottom end of the hydraulic cylinder (10) is connected to a hydraulic slider (9). The hydraulic slider (9) is connected to the main frame (2) in a driving manner. Return cylinders (5) are arranged in pairs and installed in the hollow structure. The top of the return cylinder (5) is connected to the hydraulic slider (9). Clamping components (7) are arranged in pairs and installed on the bottom upper surface of the main frame (2); Linkage components (8) are arranged in pairs, with the upper end connected to the side of the hydraulic slider (9) and the bottom of the linkage components (8) being connected to the outer end of the clamping components (7) via transmission. The clamping assembly (7) includes: The housing (73) is installed, and a lifting cylinder (74) is installed at the bottom. The bottom of the lifting cylinder (74) is installed on the upper surface of the bottom block of the main frame (2). A pair of driving components (72) are installed in the mounting housing (73), with both ends of the driving components (72) extending out of the sidewalls of the mounting housing (73); A rotating component (71) is installed in the mounting housing (73), with both ends of the rotating component (71) extending out of the sidewall of the mounting housing (73), and the rotating component (71) is disposed between the two driving components (72); The chuck (75) is connected at one end to the ends of the rotating member (71) and the driving member (72); The chuck (75) includes: The first connecting block (751) has a socket (752) on one end surface. The sockets (752) are arranged in pairs. The side wall of the socket (752) has a limit hole (753). One end of the driving member (72) is inserted into the socket (752). The second connecting block (756) has a concave structure (755) on one end surface. The first connecting block (751) also has a through hole (754) that passes through the first connecting block (751). One end of the through hole (754) extends to the other end surface of the second connecting block (756). The through hole (754) is located between the two insertion holes (752). The end of the rotating member (71) is inserted into the through hole (754). Limiting grooves (757) are provided in pairs and are formed in the second connecting block (756); The driving component (72) includes: A first guide sleeve (727) is installed in the mounting housing (73), and a limit ring (726) is installed on the outer surface of the first guide sleeve (727). The second guide sleeve (728) is installed in the mounting housing (73) at one end, and a rotating sleeve (729) is connected to the other end of the second guide sleeve (728). A first gear (722) is installed on the outer side of one end of the rotating sleeve (729). A drive rod (723) passes through the first guide sleeve (727) and the second guide sleeve (728). One end of the drive rod (723) is connected to a connector (725). A limiting ring (724) is installed on the outside of the connector (725). The connector (725) is inserted into the insertion hole (752). The limiting ring (724) is set in the limiting hole (753). A limiting block (721) is installed at the other end of the drive rod (723). An external thread structure is provided on the outer surface of the drive rod (723). The rotating component (71) includes: A sleeve (711) is installed in the mounting housing (73), and a second gear (712) is installed on the outside of the sleeve (711). The linkage component (8) includes: Mounting block (81) is mounted on the side wall of the hydraulic slider (9); A drive rack (83) is mounted on the bottom of the mounting block (81); Lifting rods (82) are arranged in pairs and installed at the bottom of the mounting block (81). The lifting rods (82) are located inside the drive rack (83). The staggered racks (84) are arranged in pairs and installed on the lifting rod (82) respectively. The staggered racks (84) and the driving racks (83) mesh with the clamping assembly (7) for transmission.

2. The four-column free forging hydraulic press as described in claim 1, characterized in that, Limiting plates are installed on the outer sides of the first guide sleeve (727) and the second guide sleeve (728), and internal thread structures are installed inside the first guide sleeve (727) and the second guide sleeve (728).

3. The four-column free forging hydraulic press as described in claim 1, characterized in that, The rotating component (71) further includes: A transmission rod (713) is connected in the sleeve (711). An installation head (714) is installed on one end of the transmission rod (713). A locking block (715) is installed on the upper and lower sides of the outer end of the installation head (714). The locking block (715) is installed in the limiting groove (757). A limiting sleeve (716) is inserted at one end into the end of the sleeve (711), and the transmission rod (713) passes through the limiting sleeve (716).

4. The four-column free forging hydraulic press as described in claim 1, characterized in that, The drive rack (83) and the lifting rod (82) are connected by a U-shaped block (85).

5. The four-column free forging hydraulic press as described in claim 1, characterized in that, A rotary forging workbench (11) is installed on the platform (3), and an anvil (12) is installed on the bottom surface of the hydraulic slider (9).

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