Pressure device capable of automatically calibrating gap deviation

Abstract

The invention discloses a pressure device capable of automatically calibrating gap deviation, and relates to the technical field of press machines. The precision problem is solved. The device specifically comprises a base, a top plate and a plurality of guide columns, the guide columns are rotationally connected to the opposite sides of the base and the top plate, the outer walls of the guide columns are matched with the same lifting table, a skin is fixed to the outer side of the base and the outer side of the top plate, and a hollow frame is detachably fixed to the top of the skin. On the basis that the guide columns are arranged to guide the lifting table, on one hand, the multiple guide columns are synchronously matched with the belt wheel through the synchronous belt, and on the other hand, the spiral grooves and the arc head limiting protrusions are arranged between the guide columns and the lifting table, so that the lifting speeds of the four corners of the lifting table can be synchronous through the characteristic of transmission closing; therefore, horizontal lifting of the lifting table is guaranteed, the situation that the applied force is not vertical due to inclination is prevented, and the direction precision of pressure application is improved.

Description

Technical Field

[0001] The invention relates to the technical field of presses, and in particular to a press device for automatically calibrating gap deviations. Background Art

[0002] A press (including punching machines and hydraulic presses) is a versatile press with an ingenious structure. It has a wide range of uses and high production efficiency. It can be widely used in cutting, punching, blanking, bending, riveting and forming processes. It processes metal blanks into parts by applying strong pressure to them to cause plastic deformation and fracture.

[0003] In the prior art, such as the Chinese patent publication number CN117818124B, a mechanical press pressing mechanism is disclosed, including a press body, and also including: a press column, which is limited and slidably arranged on the press body, the bottom end of the press column is fixedly connected to a first linear motion part, the output end of the first linear motion part is fixedly connected to a second pressure sensor, the pressure sensor is fixedly connected to an extrusion plate, and the press column is fixedly connected to a speed sensor; a pushing mechanism, the pushing mechanism includes a crankshaft, a pushing plate and a bearing, the crankshaft is rotatably connected to the press body, the bearing is detachably connected to the pushing plate, the pushing plate is hinged to the upper end of the press column through a rotating shaft, and the push plate and the bearing can be combined to form a cylinder cavity.

[0004] The above patent has the following shortcomings: the pressure column is guided by a simple guide groove, which causes the pressure column to deviate when reciprocating up and down due to the gap between the pressure column and the guide groove, which causes defects in subsequent pressure operations.

[0005] To this end, the present invention proposes a pressure device for automatically calibrating gap deviation Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a pressure device for automatically calibrating gap deviation.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A pressure device for automatically calibrating gap deviation comprises a base, a top plate and a plurality of guide columns. The plurality of guide posts are rotatably connected to the opposite side of the base and the top plate, and the outer walls of the plurality of guide posts are matched with the same lifting platform, the outer sides of the base and the top plate are fixed with skins, the top of the skins is detachably fixed with a hollow frame, the inside of the hollow frame is provided with a lifting drive mechanism for lifting the lifting platform, the bottom of the lifting platform is fixed with an upper mold pad, and the top outer wall of the base below the lifting platform is provided with a lower mold seat; The top of the guide column is connected to a pulley through a key, and the multiple pulleys are driven by the same synchronous belt, and the lifting platform is movably sleeved on the outer wall of the guide column. The outer wall of the guide column is provided with a spiral groove, and the inner wall of the lifting platform is fixed with an arc head limiting protrusion that cooperates with the spiral groove for movably limiting.

[0008] Preferably, the lifting drive mechanism includes an eccentric assembly and a multi-link assembly.

[0009] Furthermore: the eccentric assembly includes an electric motor, an eccentric disk, a disk sleeve and a bracket, the electric motor is fixed to the side wall of the bracket by bolts, the output shaft of the electric motor is connected to the main shaft rotatably connected to the bracket through a coupling, the eccentric disk is fixed to the outer wall of the main shaft, and the eccentric disk and the main shaft are arranged non-coaxially, the disk sleeve is rotatably connected to the outer wall of the eccentric disk, and the bottom end of the disk sleeve is rotatably connected to a sliding seat.

[0010] On the basis of the above scheme: the multi-link assembly includes two groups of symmetrically arranged link one, link two and link three, one end of the link one is rotatably connected to the bottom outer wall of the top plate, the other end of the link one is rotatably connected to the link two through an "I"-shaped shaft, the other end of the link two is movably connected to a force frame, one end of the link three is movably sleeved on the outer wall of the "I"-shaped shaft, and the other end of the link three is rotatably connected to the bottom of the slide seat.

[0011] A better solution in the above solution is: a slider is fixed to the bottom of the force frame through a pressure sensor, the slider is coupled to the lifting platform through a second linear drive component, and the bracket is coupled to the top plate through a first linear drive component.

[0012] As a further solution of the present invention: the arrangement direction of the linear drive component 1 and the arrangement direction of the linear drive component 2 are perpendicular to each other.

[0013] At the same time, a normally closed maintenance door is arranged above the opening side of the skin, and a follow-up loading and unloading door is arranged below the opening side of the skin.

[0014] As a preferred embodiment of the present invention: the lower mold base is slidably connected to the top outer wall of the base, and the top outer wall of the base is fixed with a telescope by bolts, the telescopic end of the telescope is fixed with a wheel frame by bolts, the inner side of the wheel frame is rotatably connected with a gear, and both sides of the gear are respectively engaged with the lower mold base and the opposite side of the synchronous belt.

[0015] At the same time, the lower die seat and the follow-up loading and unloading door are linked and coordinated through a linkage component.

[0016] As a better solution of the present invention: the linkage assembly includes a reel 2 fixed to the follow-up loading and unloading door and a reel 1 rotatably connected to the inner wall of the skin, the outer walls of the reel 1 and the reel 2 are matched with the same twisted rope, and the side wall of the lower mold base is fixed with a connecting plate by bolts, and the connecting plate is fixed to one side of the twisted rope.

[0017] The beneficial effects of the present invention are: 1. The present invention, on the basis of setting a pair of guide columns to guide the lifting platform, on the one hand, synchronizes the multiple guide columns with the pulley through a synchronous belt, and on the other hand, sets a spiral groove and an arc head limiting protrusion between the guide column and the lifting platform, so that the lifting speed of the four corners of the lifting platform can be synchronized by utilizing the characteristics of transmission closure, thereby ensuring the horizontal lifting of the lifting platform, preventing the non-vertical force caused by tilting, and increasing the directional accuracy of the pressure.

[0018] 2. The present invention divides the lifting drive mechanism into an eccentric component and a multi-link component. On the one hand, it has the high-frequency pressure characteristics of the eccentric component, and on the other hand, it also has the high-speed and high-forming characteristics of the multi-link component.

[0019] 3. The present invention realizes the function of automatic pressure direction adjustment by setting pressure sensors to sense pressure at four corners and then adjusting the position by linear drive component 1 and linear drive component 2, thereby ensuring that the pressure direction is consistent with the movement direction and preventing structural damage.

[0020] 4. The present invention, by providing components such as telescopes and gears, can, on the one hand, enable the lower die base to extend out of the skin when taking and placing materials, thereby increasing convenience; on the other hand, through the simultaneous engagement of the gears with the base and the lower die base, the movement speed of the lower die base can be increased, thereby increasing efficiency.

[0021] 5. The present invention, by setting a linkage component, can synchronize the movement of the lower die base with the opening and closing of the follow-up loading and unloading door, so as to achieve automatic opening when taking and releasing materials, and automatic closing protection when pressure is applied, thereby increasing the linkage of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a pressure device for automatically calibrating gap deviation proposed by the present invention; Figure 2 A schematic diagram of the partial structure of a pressure device for automatically calibrating gap deviation proposed by the present invention; Figure 3 A schematic diagram of the matching structure of a guide column and a lifting platform of a pressure device for automatically calibrating gap deviation proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a lifting and lowering driving mechanism of a pressure device for automatically calibrating gap deviation proposed by the present invention; Figure 5A pressure device for automatically calibrating gap deviation proposed by the present invention Figure 4 The enlarged structural diagram of part A in the middle; Figure 6 A schematic cross-sectional view of a lifting and lowering driving mechanism of a pressure device for automatically calibrating gap deviation proposed by the present invention; Figure 7 A schematic diagram of the matching structure of a base and a lower die base of a pressure device for automatically calibrating gap deviation proposed by the present invention; Figure 8 This is a schematic diagram of the linkage component structure of a pressure device for automatically calibrating gap deviation proposed by the present invention.

[0023] In the figure: 1. base; 2. guide column; 3. lifting platform; 4. lifting drive mechanism; 5. hollow frame; 6. skin; 7. normally closed maintenance door; 8. follow-up loading and unloading door; 9. linkage assembly; 10. lower die seat; 11. synchronous belt; 12. pulley; 13. spiral groove; 14. arc head limit protrusion; 15. top plate; 16. linear drive assembly one; 17. connecting rod one; 18. motor; 19. slide seat; 20. eccentric disk; 21. main shaft; 22. disk sleeve; 23. bracket; 24. "I" type shaft; 25. connecting rod two; 26. force frame; 27. slider; 28. linear drive assembly two; 29. ​​pressure sensor; 30. connecting rod three; 31. telescope; 32. wheel frame; 33. gear; 34. connecting plate; 35. drum one; 36. rope; 37. drum two. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] Embodiment 1: A pressure device for automatically calibrating gap deviation, such as Figure 1-Figure 8 As shown, it includes a base 1, a top plate 15 and a plurality of guide columns 2, wherein the plurality of guide columns 2 are rotatably connected to the base 1 and the opposite side of the top plate 15, and the outer walls of the plurality of guide columns 2 are matched with the same lifting platform 3, a skin 6 is fixed to the outer sides of the base 1 and the top plate 15, a hollow frame 5 is detachably fixed to the top of the skin 6, a lifting drive mechanism 4 for lifting and lowering the lifting platform 3 is arranged inside the hollow frame 5, an upper mold pad is fixed to the bottom of the lifting platform 3, and a lower mold seat 10 is arranged on the top outer wall of the base 1 located below the lifting platform 3.

[0027] The top of the guide column 2 is connected to a pulley 12 through a key, and the multiple pulleys 12 are driven by the same synchronous belt 11, and the lifting platform 3 is movably sleeved on the outer wall of the guide column 2. The outer wall of the guide column 2 is provided with a spiral groove 13, and the inner wall of the lifting platform 3 is fixed with an arc head limiting protrusion 14 that is movably limited and cooperates with the spiral groove 13.

[0028] When the device is in use, the workpiece to be pressed can be placed above the lower die base 10, and then the lifting drive mechanism 4 is started to drive the lifting platform 3 to descend, thereby applying pressure to the workpiece, and when the lifting platform 3 is lifted and lowered, it is guided by the guide column 2 on the one hand, and on the other hand, the arc head limiting protrusion 14 will slide in the spiral groove 13, thereby driving the guide column 2 to rotate, and multiple guide columns 2 rotate synchronously at the same speed through the cooperation of the synchronous belt 11 and the pulley 12.

[0029] This device, on the basis of setting a pair of guide columns 2 to guide the lifting platform 3, on the one hand, synchronizes the multiple guide columns 2 with the pulley 12 through the synchronous belt 11, and on the other hand, sets a spiral groove 13 and an arc head limiting protrusion 14 between the guide column 2 and the lifting platform 3, so that the lifting speed of the four corners of the lifting platform 3 can be synchronized by utilizing the characteristics of transmission closure, thereby ensuring the horizontal lifting of the lifting platform 3, preventing the non-vertical force caused by tilting, and increasing the directional accuracy of the pressure.

[0030] In order to solve the lifting problem; Figure 4 As shown, the lifting drive mechanism 4 includes an eccentric assembly and a multi-link assembly.

[0031] The eccentric assembly includes a motor 18, an eccentric disk 20, a disk sleeve 22 and a bracket 23. The motor 18 is fixed to the side wall of the bracket 23 by bolts. The output shaft of the motor 18 is connected to a main shaft 21 rotatably connected to the bracket 23 through a coupling. The eccentric disk 20 is fixed to the outer wall of the main shaft 21, and the eccentric disk 20 and the main shaft 21 are arranged non-coaxially. The disk sleeve 22 is rotatably connected to the outer wall of the eccentric disk 20, and the bottom end of the disk sleeve 22 is rotatably connected to a slide seat 19.

[0032] The multi-link assembly includes two groups of symmetrically arranged links 17, 25 and 30, one end of the link 17 is rotatably connected to the bottom outer wall of the top plate 15, the other end of the link 17 is rotatably connected to the link 2 25 through an "I"-shaped shaft 24, the other end of the link 2 25 is movably connected to a force frame 26, that is, the link 2 25 and the force frame 26 can rotate relative to each other along the shaft, and can also move relative to each other along the axis of the shaft, one end of the link 3 30 is movably sleeved on the outer wall of the "I"-shaped shaft 24, and the other end of the link 3 30 is rotatably connected to the bottom of the slide seat 19.

[0033] A slider 27 is fixed to the bottom of the force frame 26 through a pressure sensor 29. The slider 27 is coupled to the lifting platform 3 through a linear drive component 28. The bracket 23 is coupled to the top plate 15 through a linear drive component 16. The arrangement direction of the linear drive component 16 is perpendicular to the arrangement direction of the linear drive component 28.

[0034] When the motor 18 is started, it can drive the main shaft 21 to rotate, thereby utilizing the eccentric characteristics of the eccentric disk 20 and the main shaft 21 to enable the disk sleeve 22 to drive the slide 19 to rise and fall. When the slide 19 rises and falls, it can drive the end of the connecting rod three 30 to rise and fall, thereby utilizing the connecting rod three 30 to pull the "I"-shaped shaft 24 left and right, and then through the slide 19 and the connecting rod two 25, the force frame 26 is lifted and lowered, thereby driving the lifting platform 3 to rise and fall.

[0035] Furthermore, when the force-applying frame 26 applies pressure to the lifting platform 3, the pressure may not be completely parallel to the movement direction of the lifting platform 3, resulting in a lateral component of force, causing the structure to be subjected to unnecessary loads and reducing its service life. Based on this: When the force-applying frame 26 applies a longitudinal load to the slider 27, if the load applied by the force-applying frame 26 is not completely vertical, the readings of the two pressure sensors 29 will be different. Therefore, the force offset can be analyzed by combining the two groups of force-applying frames 26, that is, four pressure sensors 29. Specifically, when the four pressure sensors 29 are numbered as upper left, lower left, upper right, and lower right: ①: If the readings of the two pressure sensors 29 on the left are greater than the readings of the two pressure sensors 29 on the right, a lateral force component to the right is generated, and the entire force application point needs to be moved to the right; ②: If the readings at the lower left and upper right are the same, and the reading at the upper left is greater than that at the lower right, a component force at the lower right is generated, and the entire force application point needs to be moved to the right, and the analysis can be carried out in this way.

[0036] When it is determined that a deviation has occurred, movement can be performed via the linear drive component 1 16 and / or the linear drive component 2 28 .

[0037] This device, by dividing the lifting drive mechanism 4 into an eccentric component and a multi-link component, has the high-frequency pressure-applying characteristics of the eccentric component on the one hand, and the high-speed and high-forming characteristics of the multi-link component on the other hand.

[0038] In addition, the device can realize automatic pressure direction adjustment function by setting pressure sensors 29 to sense pressure at the four corners, and then adjust the position through linear drive component 16 and linear drive component 2 28, so as to ensure that the pressure direction is consistent with the movement direction and prevent structural damage.

[0039] In order to solve the protection problem; Figure 1As shown, a normally closed maintenance door 7 is provided above the opening side of the skin 6 , and a follow-up loading and unloading door 8 is provided below the opening side of the skin 6 .

[0040] When the present embodiment is in use, the workpiece to be pressed can be placed above the lower die seat 10, and then the lifting drive mechanism 4 is started to drive the lifting platform 3 to descend, thereby applying pressure to the workpiece, and when the lifting platform 3 is lifted and lowered, it is guided by the guide column 2 on the one hand, and on the other hand, the arc head limiting protrusion 14 will slide in the spiral groove 13, thereby driving the guide column 2 to rotate, and multiple guide columns 2 are synchronously rotated at the same speed through the cooperation of the synchronous belt 11 and the pulley 12. When the motor 18 is started, it can drive the main shaft 21 to rotate, thereby utilizing the eccentric characteristics of the eccentric disk 20 and the main shaft 21 to enable the disk sleeve 22 to drive the slide seat 19 to rise and fall. When the slide seat 19 rises and falls, it can drive the end of the connecting rod 30 to rise and fall, thereby utilizing the connecting rod 30 to pull the "I" type shaft 2 left and right. 4, and then the force frame 26 is raised and lowered through the slide 19 and the connecting rod 25, thereby driving the lifting platform 3 to rise and fall, and in the process of the force frame 26 applying pressure to the lifting platform 3, the pressure may not be completely parallel to the movement direction of the lifting platform 3, generating a lateral component of force, causing the structure to be subjected to unnecessary loads and reducing its service life. Based on this: when the force frame 26 applies a longitudinal load to the slider 27, if the load applied by the force frame 26 is not completely vertical, this will cause the readings of the two pressure sensors 29 to be different, and then the two groups of force frames 26, that is, four pressure sensors 29, can be combined to analyze the force offset. When it is determined that an offset occurs, it can be moved through the linear drive component 16 and / or the linear drive component 28.

[0041] Embodiment 2: In order to solve the convenience problem; this embodiment makes the following improvements on the basis of embodiment 1: the lower mold base 10 is slidably connected to the top outer wall of the base 1, and the top outer wall of the base 1 is fixed with a telescope 31 by bolts, and the telescopic end of the telescope 31 is fixed with a wheel frame 32 by bolts, and the inner side of the wheel frame 32 is rotatably connected with a gear 33, and the two sides of the gear 33 are respectively meshed with the lower mold base 10 and the opposite side of the synchronous belt 11.

[0042] When loading and unloading, the telescopic device 31 can be controlled to extend, and the telescopic device 31 drives the gear 33 to move, thereby driving the lower mold base 10 to move through the meshing action of the gear 33 and the base 1 and the lower mold base 10, so that the lower mold base 10 extends out of the skin 6.

[0043] This device, by providing components such as a telescoping device 31 and a gear 33, can, on the one hand, allow the lower die base 10 to extend out of the skin 6 when taking and placing materials, thereby increasing convenience; on the other hand, by simultaneously meshing the gear 33 with the base 1 and the lower die base 10, the movement speed of the lower die base 10 can be increased, thereby increasing efficiency.

[0044] In order to solve the synchronization problem, the lower die base 10 and the follow-up loading and unloading door 8 are linked and coordinated through a linkage component 9.

[0045] The linkage assembly 9 includes a reel 2 37 fixed to the follow-up loading and unloading door 8 and a reel 1 35 rotatably connected to the inner wall of the skin 6. The outer walls of the reel 1 35 and the reel 2 37 are matched with the same twisted rope 36. The side wall of the lower mold base 10 is fixed with a connecting plate 34 by bolts, and the connecting plate 34 is fixed to one side of the twisted rope 36.

[0046] When the lower die base 10 moves, it can drive the twisted rope 36 to move through the connecting plate 34, so that the second reel 37 rotates to drive the follow-up loading and unloading door 8 to open and close.

[0047] When this embodiment is in use, when loading and unloading, the telescopic device 31 can be controlled to extend, and the telescopic device 31 drives the gear 33 to move, thereby driving the lower mold base 10 to move through the meshing action of the gear 33 and the base 1 and the lower mold base 10, so that the lower mold base 10 extends out of the skin 6. When the lower mold base 10 moves, it can drive the rope 36 to move through the connecting plate 34, so that the reel 37 rotates and drives the follow-up loading and unloading door 8 to open and close.

[0048] By setting the linkage component 9, the movement of the lower die base 10 can be synchronized with the opening and closing of the follow-up loading and unloading door 8, so as to achieve automatic opening when taking and releasing materials, and automatic closing protection when pressure is applied, thereby increasing the linkage of the device.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure device for automatically calibrating gap deviation, comprising a base (1), a top plate (15) and a plurality of guide posts (2), characterized in that: The plurality of guide columns (2) are rotatably connected to opposite sides of the base (1) and the top plate (15), and the outer walls of the plurality of guide columns (2) are matched with a same lifting platform (3); a skin (6) is fixed to the outer sides of the base (1) and the top plate (15); a hollow frame (5) is detachably fixed to the top of the skin (6); a lifting drive mechanism (4) for lifting and lowering the lifting platform (3) is arranged inside the hollow frame (5); an upper mold pad is fixed to the bottom of the lifting platform (3); and a lower mold seat (10) is arranged on the top outer wall of the base (1) below the lifting platform (3); The top of the guide column (2) is connected to a pulley (12) via a key, and a plurality of pulleys (12) are coupled via a same synchronous belt (11). The lifting platform (3) is movably sleeved on the outer wall of the guide column (2), a spiral groove (13) is provided on the outer wall of the guide column (2), and an arc-shaped limiting protrusion (14) that movably limits the spiral groove (13) is fixed on the inner wall of the lifting platform (3).

2. A pressure device for automatically calibrating gap deviation according to claim 1, characterized in that: The lifting drive mechanism (4) comprises an eccentric assembly and a multi-link assembly.

3. A pressure device for automatically calibrating gap deviation according to claim 2, characterized in that: The eccentric assembly comprises a motor (18), an eccentric disc (20), a disc sleeve (22) and a bracket (23); the motor (18) is fixed to the side wall of the bracket (23) by bolts; the output shaft of the motor (18) is connected to a main shaft (21) rotatably connected to the bracket (23) by a coupling; the eccentric disc (20) is fixed to the outer wall of the main shaft (21), and the eccentric disc (20) and the main shaft (21) are arranged non-coaxially; the disc sleeve (22) is rotatably connected to the outer wall of the eccentric disc (20); and the bottom end of the disc sleeve (22) is rotatably connected to a sliding seat (19).

4. A pressure device for automatically calibrating gap deviation according to claim 3, characterized in that: The multi-link assembly comprises two groups of symmetrically arranged link rods 1 (17), 2 (25) and 3 (30), one end of the link rod 1 (17) is rotatably connected to the bottom outer wall of the top plate (15), the other end of the link rod 1 (17) is rotatably connected to the link rod 2 (25) via an "I"-shaped shaft (24), the other end of the link rod 2 (25) is movably connected to a force applying frame (26), one end of the link rod 3 (30) is movably sleeved on the outer wall of the "I"-shaped shaft (24), and the other end of the link rod 3 (30) is rotatably connected to the bottom of the slide seat (19).

5. A pressure device for automatically calibrating gap deviation according to claim 4, characterized in that: A slider (27) is fixed to the bottom of the force-applying frame (26) via a pressure sensor (29); the slider (27) is coupled to the lifting platform (3) via a second linear drive assembly (28); and the bracket (23) is coupled to the top plate (15) via a first linear drive assembly (16).

6. A pressure device for automatically calibrating gap deviation according to claim 5, characterized in that: The arrangement direction of the linear drive component 1 (16) and the arrangement direction of the linear drive component 2 (28) are perpendicular to each other.

7. A pressure device for automatically calibrating gap deviation according to claim 1, characterized in that: A normally closed maintenance door (7) is provided above the opening side of the skin (6), and a follow-up loading and unloading door (8) is provided below the opening side of the skin (6).

8. A pressure device for automatically calibrating gap deviation according to claim 7, characterized in that: The lower die base (10) is slidably connected to the top outer wall of the base (1), and a telescopic device (31) is fixed to the top outer wall of the base (1) by bolts, and a wheel frame (32) is fixed to the telescopic end of the telescopic device (31) by bolts, and a gear (33) is rotatably connected to the inner side of the wheel frame (32), and two sides of the gear (33) are respectively meshed with the lower die base (10) and the opposite side of the synchronous belt (11).

9. A pressure device for automatically calibrating gap deviation according to claim 8, characterized in that: The lower die seat (10) and the follow-up loading and unloading door (8) are linked together via a linkage assembly (9).

10. A pressure device for automatically calibrating gap deviation according to claim 9, characterized in that: The linkage assembly (9) comprises a second reel (37) fixed to the follow-up loading and unloading door (8) and a first reel (35) rotatably connected to the inner wall of the skin (6), the outer walls of the first reel (35) and the second reel (37) are matched with the same twisted rope (36), and the side wall of the lower mold base (10) is fixed with a connecting plate (34) by bolts, and the connecting plate (34) is fixed to one side of the twisted rope (36).

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