Large-tonnage two-point press

Abstract

The invention relates to a large-tonnage two-point press machine, and relates to the technical field of compression molding. The die comprises a working frame, an upper die and a lower die, a driving part is arranged at the top of the working frame, the driving part is connected with the upper die and used for driving the upper die to move up and down, the lower die is arranged at the bottom of the working frame and located over the upper die, a guide block is arranged on the side wall of the upper die, a guide groove is formed in the side wall of the working frame, and the guide block is inserted into the guide groove. The working frame is provided with a limiting mechanism, the guide block can abut against the limiting mechanism, and the limiting mechanism is used for limiting movement of the guide block. The device has the effect that the movement position of the upper die can be flexibly limited so as to adapt to different working requirements.

Description

Technical Field

[0001] This application relates to the field of compression molding, and in particular to a large-tonnage dual-point press. Background Technology

[0002] In the field of machining, presses, as an important piece of equipment, play a crucial role in many industries such as metal forming and plastics processing. With the continuous development of industrial production, the performance requirements for presses are becoming increasingly stringent, especially in the processing of large-tonnage workpieces. The precision, stability, and flexibility of presses directly affect product quality and production efficiency. The widespread application of large-tonnage presses enables the efficient and precise processing of workpieces with various complex shapes and high precision requirements, driving technological progress and development in related industries.

[0003] To solve the problem of compression molding of workpieces, a pressure gauge is usually used. The upper mold moves up and down through a drive component to press the workpiece placed on the lower mold. In traditional presses, a straight guide rod is required for lifting and lowering.

[0004] However, when machining heavy-duty workpieces, the guide rod can only provide guidance and cannot flexibly and accurately control the movement position of the upper die. As a result, it is impossible to adjust the height of the upper die in a timely and accurate manner according to different work requirements, which limits the applicability and machining accuracy of the press. Therefore, it needs to be improved. Summary of the Invention

[0005] To address the issue of the inability to flexibly limit the movement position of the upper mold to adapt to different work requirements, this application provides a large-tonnage dual-point press.

[0006] The technical solution for a large-tonnage dual-point press provided in this application is as follows: A large-tonnage dual-point press includes a work frame, an upper die, and a lower die. A driving component is provided at the top of the work frame, and the driving component is connected to the upper die to drive the upper die to move up and down. The lower die is located at the bottom of the work frame and is directly above the upper die. A guide block is provided on the side wall of the upper die, and a guide groove is provided on the side wall of the work frame. The guide block is inserted into the guide groove and can move within the guide groove. A limiting mechanism is provided on the work frame, and the guide block can abut against the limiting mechanism to restrict the movement of the guide block.

[0007] By adopting the above technical solution, when in use, the workpiece is placed on the lower mold, and then the driving component is activated to drive the upper mold to move down until the upper mold abuts against the workpiece and presses the workpiece onto the lower mold, so that the workpiece conforms to the shape of the lower mold and the workpiece is compressed and molded.

[0008] During the movement of the upper mold, the guide block moves in the guide groove. The side wall of the guide block contacts the inner wall of the guide groove, which plays a role in restricting the guidance and increasing the stability of the upper mold movement. During this process, the guide block can abut against the limiting mechanism to restrict the movement of the guide block and fix the height of the upper mold, thereby flexibly restricting the movement position of the upper mold to adapt to different working requirements.

[0009] Optionally, the limiting mechanism includes an upper control component and a lower control component, both of which are mounted on the work frame. The guide block is located between the upper control component and the lower control component, and the guide block is movable between the upper control component and the lower control component. The guide block can contact the upper control component, and the upper control component is used to restrict the guide block from moving upward. The guide block can contact the lower control component, and the lower control component is used to restrict the guide block from moving downward.

[0010] By adopting the above technical solution, when the upper mold moves, the guide block moves vertically. When the guide block moves horizontally and is inserted into the upper control assembly, the guide block cannot move upward, so the upper mold can only move downward. When the guide block is inserted into the lower control assembly, the guide block cannot move downward, so the upper mold can only move upward. This realizes the unidirectional movement of the upper mold, ensuring that the movement of the upper mold under different working requirements will not retract, and improving the accuracy of the upper mold positioning.

[0011] Optionally, the control assembly includes several control blocks, which are connected to the work frame via control springs. The several control blocks are evenly distributed along the length of the guide groove. Each control block has a guide surface, which is inclined downward at one end near the guide block. The guide block can be inserted between adjacent control blocks.

[0012] By adopting the above technical solution, when the guide block moves horizontally and is inserted between adjacent control blocks, the guide block moves upward and abuts against one of the control blocks above. At this time, the control block, under the action of the control spring, generates a blocking force on the guide block, thereby restricting the guide block from moving further upward. When the upper mold drives the guide block to move downward, the guide block abuts against the guide surface on the lower control block and moves on the guide surface, causing the control spring to deform and gradually compress, thus allowing the guide block to pass smoothly through the control block, thereby realizing the downward movement of the guide block and completing the unidirectional downward movement of the upper mold.

[0013] Optionally, the lowering assembly includes several lowering blocks, which are connected to the work frame via lowering springs. The several lowering blocks are evenly distributed along the length of the guide groove. Each lowering block has an inclined surface, with the end of the inclined surface near the guide block inclined upwards. The guide block can be inserted between adjacent lowering blocks.

[0014] By adopting the above technical solution, when the guide block is inserted between adjacent control blocks, the guide block moves downward and abuts against the control block below. Under the action of the control spring, the control block restricts the guide block from moving further downward. When the upper mold moves the guide block upward, the guide block abuts against the inclined surface and slides on the inclined surface, thereby pushing the control block to squeeze the control spring, allowing the guide block to pass smoothly through the control block, realizing a unidirectional movement where the guide block can only move upward and the upper mold moves upward.

[0015] Optionally, the guide block includes a mounting frame and two movable blocks. The mounting frame is fixed on the work frame, and the movable blocks are slidably connected to the mounting frame. One of the movable blocks can be inserted between adjacent upper control blocks, and the other movable block can be inserted between adjacent lower control blocks.

[0016] By adopting the above technical solution, when it is necessary to restrict the unidirectional movement of the upper mold, one of the moving blocks is inserted between adjacent upper control blocks, and the other moving block is located between the upper control assembly and the lower control assembly, preventing the guide block from moving upward and enabling the upper mold to move downward in one direction. When one moving block is inserted between adjacent lower control blocks, and the other moving block is located between the upper control assembly and the lower control assembly, the upper mold can only move upward in one direction.

[0017] When it is necessary to fix the height position of the upper mold, one of the moving blocks is inserted between the adjacent upper control blocks and the other moving block is inserted between the adjacent lower control blocks. At this time, through the cooperation of the moving blocks with the upper and lower control blocks, the guide blocks are restricted on both sides, so that they cannot move up and down, thereby fixing the height position of the upper mold.

[0018] Optionally, the mounting frame is provided with a moving component for driving the moving blocks to move. The moving component includes a moving gear and two moving racks. The moving gear is rotatably connected to the mounting frame. The mounting frame is provided with a moving motor. The output end of the moving motor is coaxially fixed with the moving gear and is used to drive the moving gear to rotate. The two moving racks are respectively fixed on the two moving blocks. The moving gear is located between the two moving racks, and the moving racks can mesh with the moving gear.

[0019] By adopting the above technical solution, when the moving motor starts and drives the moving gear to rotate, it meshes with the moving rack, causing the moving rack to move, and thus the moving block to move on the mounting frame. This allows the position of the moving block to be flexibly adjusted according to actual processing needs to adapt to different limit requirements.

[0020] Optionally, the movable rack is slidably connected to the movable block, and the movable rack can move on the movable block in a direction closer to or away from the movable gear. The mounting bracket is provided with a sliding assembly for driving the movable rack to move.

[0021] By adopting the above technical solution, in the initial state, both moving racks are engaged with the moving gear. When the moving gear rotates, the two moving racks move simultaneously, allowing the two moving blocks to be inserted between adjacent lower control blocks and adjacent upper control blocks, respectively, thus achieving the positioning of the upper mold height. When it is necessary to restrict the unidirectional movement of the upper mold, the sliding component is activated, driving one of the sliding racks to move away from the moving gear on the moving block, causing the moving rack to separate from the moving gear. When the moving gear rotates, it only drives one moving rack to move, thereby causing one of the moving blocks to be inserted between adjacent upper or lower control blocks, achieving the unidirectional movement of the upper mold. During this process, the other moving rack does not participate in the meshing transmission, thus keeping the other moving block stationary, always between the upper and lower control components, and therefore not interfering with the unidirectional movement of the upper mold.

[0022] Optionally, the sliding assembly includes a mounting frame, a sliding frame, and a cam. The mounting frame and the sliding frame are slidably connected to the mounting bracket. One of the moving racks is slidably connected to the top end of the mounting frame, and the other moving rack is slidably connected to the top end of the sliding frame. The cam is rotatably connected to the mounting bracket. The mounting bracket is equipped with a sliding motor. The output end of the sliding motor is coaxially fixed with the cam and is used to drive the cam to rotate. The cam is located between the bottom end of the mounting frame and the bottom end of the sliding frame. The mounting frame and the sliding frame are connected by a connecting spring. The connecting spring is used to control that the bottom ends of both the mounting frame and the sliding frame abut against the cam.

[0023] By adopting the above technical solution, when the cam rotates, the change in its profile will push the mounting frame and sliding frame to move, which in turn will drive the moving rack to move on the moving block, realizing the meshing and disengagement of the moving rack and the moving gear, thereby further adjusting the position of the moving block.

[0024] Optionally, both the upper control block and the lower control block are connected to a mounting block, and the work frame is provided with an adjustment component, which is connected to the mounting block and is used to drive the mounting block to move up and down.

[0025] By adopting the above technical solution, the adjusting component is used to drive the mounting block to move up and down, thereby adjusting the distance between adjacent mounting blocks. This changes the allowance for the moving block to move between adjacent mounting blocks. When the moving block is inserted between adjacent mounting blocks, the adjusting component drives the distance between the mounting blocks to decrease, causing the mounting block to drive the corresponding upper or lower control block to abut against the moving block, reducing the distance the moving block moves back and improving the accuracy of the upper mold positioning.

[0026] Optionally, the adjustment assembly includes several adjusting rods and several connecting rods. The adjusting rods are parallel to each other, and the connecting rods are parallel to each other. The ends of the adjusting rods are hinged to the ends of the connecting rods. The adjusting rods and the connecting rods correspond one-to-one. The adjusting rods and the corresponding connecting rods are arranged crosswise. The middle part of the adjusting rod and the middle part of the connecting rod are rotatably connected by a rotating shaft, and the rotating shaft is connected to the mounting block.

[0027] By adopting the above technical solution, the included angle between the adjusting rod or connecting rod can be changed by rotating them, thereby moving the mounting block up and down. This allows for flexible adjustment of the positions of the upper and lower control blocks according to actual processing requirements, achieving flexible control over the movement range of the guide block.

[0028] In summary, this application includes at least one of the following beneficial effects: 1. When unidirectional movement of the upper mold needs to be restricted, one moving block is inserted between adjacent upper control blocks, and the other moving block is located between the upper control assembly and the lower control assembly, preventing the guide block from moving upward and allowing the upper mold to move downward in one direction. When one moving block is inserted between adjacent lower control blocks, and the other moving block is located between the upper control assembly and the lower control assembly, the upper mold can only move upward in one direction. When the height of the upper mold needs to be fixed, one moving block is inserted between adjacent upper control blocks, and the other moving block is inserted between adjacent lower control blocks. In this case, through the cooperation of the moving blocks with the upper and lower control blocks, i.e., restricting movement on both sides, the guide block cannot move up or down, thus fixing the height of the upper mold. 2. Initially, both moving racks are engaged with the moving gear. When the moving gear rotates, both moving racks move simultaneously, causing the two moving blocks to insert between adjacent lower control blocks and adjacent upper control blocks, respectively, thus positioning the upper mold height. When it is necessary to restrict the unidirectional movement of the upper mold, the sliding assembly is activated, driving one of the sliding racks to move away from the moving gear on the moving block, causing the moving rack to disengage from the moving gear. When the moving gear rotates, it only drives one moving rack to move, thereby causing one of the moving blocks to insert between adjacent upper or lower control blocks, achieving unidirectional movement of the upper mold. During this process, the other moving rack does not participate in the meshing transmission, thus keeping the other moving block stationary, always between the upper and lower control assemblies, and therefore not interfering with the unidirectional movement of the upper mold. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the large-tonnage dual-point press according to an embodiment of this application; Figure 2 A schematic diagram showing the connection relationship between the guide block and the limiting mechanism; Figure 3 This is a structural diagram showing the connection relationship between the moving component and the sliding component.

[0030] In the diagram: 10. Work frame; 11. Guide groove; 20. Upper mold; 30. Lower mold; 40. Guide block; 41. Mounting frame; 42. Moving block; 50. Limiting mechanism; 51. Upper control assembly; 511. Upper control block; 5111. Guide surface; 512. Upper control spring; 52. Lower control assembly; 521. Lower control block; 5211. Inclined surface; 522. Lower control spring; 60. Moving assembly; 61. Moving gear; 611. Moving motor; 62. Moving rack; 70. Sliding assembly; 71. Mounting frame; 72. Sliding frame; 73. Cam; 731. Sliding motor; 74. Connecting spring; 80. Mounting block; 90. Adjusting assembly; 91. Adjusting rod; 92. Connecting rod. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a large-tonnage dual-point press. (Refer to...) Figure 1 and Figure 2The large-tonnage dual-point press includes a work frame 10, an upper die 20, a lower die 30, a drive component, a guide block 40, and a limiting mechanism 50. The work frame 10 serves as the support structure for the entire press. The drive component is installed on the top of the work frame 10 and connected to the upper die 20, enabling the upper die 20 to move up and down. The lower die 30 is located at the bottom of the work frame 10 and directly below the upper die 20. The guide block 40 is installed on the side wall of the upper die 20. A guide groove 11 is formed vertically on the side wall of the work frame 10, and the guide block 40 is inserted into the guide groove 11 and can move within the groove. The limiting mechanism 50 is installed on the work frame 10, and the guide block 40 can abut against the limiting mechanism 50 to restrict the movement of the guide block 40, thereby flexibly controlling the movement position of the upper die 20, ensuring the stable movement of the upper die 20, and improving the forming quality of the workpiece.

[0033] Reference Figure 1 and Figure 2 Specifically, the top of the work frame 10 is equipped with an installation platform for mounting the drive component, and the bottom is equipped with a mounting base for the lower mold 30 for fixing the lower mold 30. The drive component is a hydraulic drive device, which uses a hydraulic pump to supply pressurized oil to drive the piston rod of the hydraulic cylinder to extend and retract, thereby moving the upper mold 20 up and down. The drive component can be installed using bolt connections to ensure a secure and reliable connection with the work frame 10.

[0034] Reference Figure 1 and Figure 2 The bottom of the upper mold 20 is usually the forming surface that contacts the workpiece, and its surface finish and flatness are required to ensure the forming quality of the workpiece. A guide block 40 is installed on the end wall of the upper mold 20. The guide block 40 includes a mounting frame 41 and two moving blocks 42. The mounting frame 41 is welded to the upper mold 20, and the two moving blocks 42 are arranged vertically and slidably connected to the mounting frame 41, so that the moving blocks 42 can move to abut against the limiting mechanism 50.

[0035] Reference Figure 1 and Figure 2 The lower die 30 is fixed to the bottom of the workpiece frame 10 and is positioned opposite to the upper die 20. The top of the lower die 30 is the forming surface that contacts the workpiece, and its shape matches the forming surface of the upper die 20 to achieve compression molding of the workpiece. The lower die 30 is provided with positioning pins or positioning grooves around its perimeter to accurately place the workpiece and ensure the positional accuracy of the workpiece during the stamping process.

[0036] Reference Figure 2 and Figure 3 The limiting mechanism 50 includes an upper control component 51 and a lower control component 52. A moving block 42 is located between the upper control component 51 and the lower control component 52, and the moving block 42 can move between the two. The arrangement of the upper control component 51 and the lower control component 52 enables the guide block 40 to move in one direction or be fixed in position under different conditions, thereby flexibly controlling the movement of the upper mold 20.

[0037] Reference Figure 2 and Figure 3 The upper control assembly 51 includes several upper control blocks 511, which are connected to the work frame 10 via upper control springs 512. Each upper control block 511 has a guide surface 5111 cut into it, with the end of the guide surface 5111 near the guide block 40 inclined downwards. This design allows the guide block 40 to pass smoothly through the upper control blocks 511 when moving downwards. Several upper control blocks 511 are evenly distributed along the length of the guide groove 11. The spacing between adjacent upper control blocks 511 is designed according to the size of the moving block 42, ensuring that one moving block 42 can be inserted between adjacent upper control blocks 511. The moving block 42 abuts against the upper control block 511 above it, and the upper control blocks 511 act as a restraint, preventing the moving block 42 from moving; that is, the upper mold 20 can only move downwards in one direction.

[0038] Reference Figure 2 and Figure 3 The lowering assembly 52 includes several lowering blocks 521, which are connected to the work frame 10 via lowering springs 522. The structure of the lowering block 521 is similar to that of the uppering block 511. The lowering block 521 has an inclined surface 5211 cut on it. The inclined surface 5211 is inclined upward at one end near the guide block 40. That is, the guide surface 5111 on the uppering block 511 and the inclined surface 5211 on the lowering block 521 are inclined in opposite directions. The inclined surface 5211 allows the moving block 42 to pass smoothly through the lowering block 521 when it moves upward. Several control blocks 521 are evenly arranged along the length of the guide groove 11. The spacing between adjacent control blocks 521 is also designed according to the size of the guide block 40, so that another moving block 42 can be inserted between adjacent control blocks 521. The moving block 42 abuts against the control block 521 below. The control block 521 plays a restrictive role, preventing the moving block 42 from moving downward. That is, the upper mold 20 can only make upward unidirectional movement.

[0039] Reference Figure 2 and Figure 3 Alternatively, two moving blocks 42 can be inserted simultaneously between the corresponding upper control block 511 and lower control block 521. In this case, the guide block 40 will move up and down first, so that the position of the guide block 40 is fixed, thereby fixing the height of the upper mold 20. Thus, by controlling the position of the moving blocks 42, the upper mold 20 can be moved in one direction or fixed in one position.

[0040] Reference Figure 2 and Figure 3The mounting frame 41 is equipped with a moving assembly 60 for driving the moving block 42 to move. The moving assembly 60 includes a moving gear 61 and two moving racks 62. The moving gear 61 is rotatably connected to the mounting frame 41, and a moving motor 611 is mounted on the mounting frame 41. The output end of the moving motor 611 is coaxially fixed with the moving gear 61. When the moving motor 611 starts, it drives the moving gear 61 to rotate. The two moving racks 62 are respectively fixed on the two moving blocks 42, and the moving gear 61 is located between the two moving racks 62. The moving racks 62 can mesh with the moving gear 61. When the moving gear 61 rotates, it drives the moving racks 62 to move through meshing with them, thereby causing the moving block 42 to move on the mounting frame 41.

[0041] Reference Figure 2 and Figure 3 A movable rack 62 is slidably connected to a movable block 42. The movable rack 62 can move on the movable block 42 towards or away from the movable gear 61. A sliding assembly 70 is provided on the mounting frame 41 to drive the movable rack 62. The sliding assembly 70 includes a mounting frame 71, a sliding frame 72, and a cam 73. Both the mounting frame 71 and the sliding frame 72 are slidably connected to the mounting frame 41. One movable rack 62 is slidably connected to the top of the mounting frame 71, and the other movable rack 62 is slidably connected to the top of the sliding frame 72. The cam 73 is rotatably connected to the mounting frame 41. A sliding motor 731 is bolted to the mounting frame 41, and the output end of the sliding motor 731 is coaxially fixed with the cam 73.

[0042] When the sliding motor 731 is started, it drives the cam 73 to rotate. The cam 73 is located between the bottom end of the mounting frame 71 and the bottom end of the sliding frame 72. The mounting frame 71 and the sliding frame 72 are connected by a connecting spring 74, which controls the bottom ends of both the mounting frame 71 and the sliding frame 72 to abut against the cam 73. When the cam 73 rotates, the change in its profile pushes the mounting frame 71 and the sliding frame 72 to move, which in turn drives the moving rack 62 to move on the moving block 42, realizing the engagement and disengagement of the moving rack 62 and the moving gear 61.

[0043] Reference Figure 2 and Figure 3Both the upper control block 511 and the lower control block 521 are connected to mounting blocks 80. Specifically, the upper control spring 512 and the lower control spring 522 are mounted on the mounting blocks 80, allowing the upper control block 511 and the lower control block 521 to extend and retract on their respective mounting blocks 80. An adjustment assembly 90 is provided on the work frame 10. The adjustment assembly 90 is connected to the mounting blocks 80 and is used to drive the mounting blocks 80 to move up and down. The adjustment assembly 90 includes several adjusting rods 91 and several connecting rods 92. The adjusting rods 91 are parallel to each other, and the connecting rods 92 are parallel to each other. The ends of the adjusting rods 91 and the connecting rods 92 are hinged. Each adjusting rod 91 corresponds to a corresponding connecting rod 92, and the adjusting rods 91 and the corresponding connecting rods 92 are arranged crosswise. The middle part of the adjusting rod 91 and the middle part of the connecting rod 92 are rotatably connected via a rotating shaft, which is connected to the mounting block 80.

[0044] Reference Figure 2 and Figure 3 One end of the adjustment assembly 90 is rotatably connected to the work frame 10, i.e., its position is fixed, while the other end of the adjustment assembly 90 is connected to a cylinder, which is mounted on the work frame 10 by bolts. The cylinder is used to drive one end of the adjustment assembly 90 to move up and down.

[0045] The cylinder drives one end of the adjustment component 90 to move, causing the hinge of the connecting rod 92 and the adjusting rod 91 at the end of the adjustment component 90 to move, thereby causing the connecting rod 92 and the adjusting rod 91 to rotate, thereby changing the included angle between them, thereby driving the mounting block 80 to move up and down, adjusting the distance between adjacent mounting blocks 80, and thus changing the margin of movement of the moving block 42 between adjacent mounting blocks 80.

[0046] The implementation principle of a large-tonnage dual-point press according to an embodiment of this application is as follows: When using the large-tonnage dual-point press, the workpiece is placed on the lower die 30, and the drive component is activated to drive the upper die 20 downward. During the movement of the upper die 20, the guide block 40 moves in the guide groove 11, which plays a role in restricting the guidance and increasing the stability of the movement of the upper die 20. When it is necessary to control the unidirectional movement of the upper die 20, the moving motor 611 and the sliding motor 731 are activated. The position of the moving block 42 is adjusted by the moving component 60 and the sliding component 70, so that one of the moving blocks 42 is inserted between the adjacent upper control block 511 or lower control block 521, thereby realizing the unidirectional movement of the upper die 20. When it is necessary to fix the height position of the upper die 20, the two moving blocks 42 are respectively inserted between the adjacent upper control block 511 and lower control block 521. Through the cooperation of the moving block 42 with the upper control block 511 and lower control block 521, the height position of the upper die 20 is fixed. Meanwhile, by adjusting component 90, the positions of upper control block 511 and lower control block 521 can be flexibly adjusted, the margin of movement of moving block 42 can be changed, and the positioning accuracy of upper mold 20 can be improved.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A large-tonnage dual-point press, characterized in that, The device includes a work frame (10), an upper mold (20), and a lower mold (30). The top of the work frame (10) is provided with a driving component, which is connected to the upper mold (20) and is used to drive the upper mold (20) to move up and down. The lower mold (30) is located at the bottom of the work frame (10) and is located directly above the upper mold (20). The side wall of the upper mold (20) is provided with a guide block (40), and the side wall of the work frame (10) is provided with a guide groove (11). The guide block (40) is inserted into the guide groove (11) and can move in the guide groove (11). The work frame (10) is provided with a limiting mechanism (50), and the guide block (40) can abut against the limiting mechanism (50). The limiting mechanism (50) is used to restrict the movement of the guide block (40).

2. The large-tonnage dual-point press according to claim 1, characterized in that, The limiting mechanism (50) includes an upper control component (51) and a lower control component (52), both of which are mounted on the work frame (10). The guide block (40) is located between the upper control component (51) and the lower control component (52). The guide block (40) can move between the upper control component (51) and the lower control component (52). The guide block (40) can contact the upper control component (51). The upper control component (51) is used to restrict the guide block (40) from moving upward. The guide block (40) can contact the lower control component (52). The lower control component (52) is used to restrict the guide block (40) from moving downward.

3. The large-tonnage dual-point press according to claim 2, characterized in that, The control assembly (51) includes several control blocks (511). The control blocks (511) are connected to the work frame (10) through control springs (512). The several control blocks (511) are evenly arranged along the length of the guide groove (11). The control blocks (511) are provided with guide surfaces (5111). The guide surfaces (5111) are inclined downward at one end near the guide block (40). The guide blocks (40) can be inserted between adjacent control blocks (511).

4. The large-tonnage dual-point press according to claim 3, characterized in that, The control assembly (52) includes several control blocks (521). The control blocks (521) are connected to the work frame (10) through control springs (522). The several control blocks (521) are evenly arranged along the length of the guide groove (11). The control blocks (521) are provided with an inclined surface (5211). The inclined surface (5211) is inclined upward at one end near the guide block (40). The guide block (40) can be inserted between adjacent control blocks (521).

5. The large-tonnage dual-point press according to claim 4, characterized in that, The guide block (40) includes a mounting frame (41) and two movable blocks (42). The mounting frame (41) is fixed on the work frame (10), and the movable blocks (42) are slidably connected to the mounting frame (41). One of the movable blocks (42) can be inserted between adjacent upper control blocks (511), and the other movable block (42) can be inserted between adjacent lower control blocks (521).

6. The large-tonnage dual-point press according to claim 5, characterized in that, The mounting frame (41) is provided with a moving component (60) for driving the moving block (42) to move. The moving component (60) includes a moving gear (61) and two moving racks (62). The moving gear (61) is rotatably connected to the mounting frame (41). The mounting frame (41) is provided with a moving motor (611). The output end of the moving motor (611) is coaxially fixed with the moving gear (61) and is used to drive the moving gear (61) to rotate. The two moving racks (62) are respectively fixed on the two moving blocks (42). The moving gear (61) is located between the two moving racks (62). The moving racks (62) can mesh with the moving gear (61).

7. The large-tonnage dual-point press according to claim 6, characterized in that, The movable rack (62) is slidably connected to the movable block (42), and the movable rack (62) can move on the movable block (42) in a direction closer to or away from the movable gear (61). The mounting bracket (41) is provided with a sliding assembly (70) for driving the movable rack (62) to move.

8. The large-tonnage dual-point press according to claim 7, characterized in that, The sliding assembly (70) includes a mounting frame (71), a sliding frame (72), and a cam (73). Both the mounting frame (71) and the sliding frame (72) are slidably connected to the mounting bracket (41). One of the moving racks (62) is slidably connected to the top of the mounting frame (71), and the other moving rack (62) is slidably connected to the top of the sliding frame (72). The cam (73) is rotatably connected to the mounting bracket (41). A sliding motor (731) is provided, the output end of which is fixed coaxially with the cam (73) to drive the cam (73) to rotate. The cam (73) is located between the bottom end of the mounting frame (71) and the bottom end of the sliding frame (72). The mounting frame (71) and the sliding frame (72) are connected by a connecting spring (74). The connecting spring (74) is used to control the bottom end of the mounting frame (71) and the bottom end of the sliding frame (72) to abut against the cam (73).

9. The large-tonnage dual-point press according to claim 4, characterized in that, Both the upper control block (511) and the lower control block (521) are connected to mounting blocks (80). The work frame (10) is provided with an adjustment component (90), which is connected to the mounting block (80) and is used to drive the mounting block (80) to move up and down.

10. The large-tonnage dual-point press according to claim 9, characterized in that, The adjustment assembly (90) includes a plurality of adjustment rods (91) and a plurality of connecting rods (92). The plurality of adjustment rods (91) are parallel to each other, and the plurality of connecting rods (92) are parallel to each other. The ends of the adjustment rods (91) are hinged to the ends of the connecting rods (92). The plurality of adjustment rods (91) and connecting rods (92) correspond one-to-one. The adjustment rods (91) and the corresponding connecting rods (92) are arranged crosswise. The middle part of the adjustment rod (91) and the middle part of the connecting rod (92) are rotatably connected by a rotating shaft. The rotating shaft is connected to the mounting block (80).

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