Punch forming device of four-column servo punch press

Abstract

The invention relates to the technical field of punch press mold adjustment, in particular to a four-column servo punch press punch forming device which comprises a main shaft, a threaded shaft is movably connected to the inner side of the main shaft through threads, a worm gear is arranged at the bottom end of the threaded shaft, and a load piston is arranged at the bottom end of the worm gear. According to the device, the convex block is arranged on the outer side of the rotating shaft, the convex block and the abutting block are staggered, and the oil pressure structure and the linkage structure are arranged at the front end of the rotating shaft, so that the piston rod can be driven to move on the inner side of the oil drainage cavity before the motor is started to drive the mold adjusting base to adjust and move; hydraulic oil in the piston cylinder and the piston sleeve moves into the oil drainage cavity, the abutting effect of the hydraulic oil on the load piston is relieved, the threaded shaft can descend on the inner side of the main shaft, and before the mold adjusting base moves, tight attachment of threads between the threaded shaft and the main shaft is relieved, friction of the threads between the threaded shaft and the main shaft is reduced, and the precision of the device is guaranteed; the service life of the device is prolonged.

Description

Technical Field

[0001] This invention relates to the field of punch press die adjustment technology, specifically to a four-column servo punch press stamping forming device. Background Technology

[0002] Currently, with the continuous increase in labor and resource costs, and the country's emphasis on safe production, the stamping industry is also constantly upgrading and transforming its stamping processes, moving towards automation and integration. The die height adjustment of high-precision stamping presses is an important component in daily production, requiring accurate and stable die height adjustment, and the adjustment device must have effective overload protection capabilities after adjustment.

[0003] In response, Chinese patent application number CN201921857443.7 discloses a punch press die height adjustment device with a function of eliminating thread backlash. The device includes an adjusting worm gear, an adjusting worm, an adjusting nut, and a motor. The adjusting nut is threaded onto the adjusting worm gear, and the adjusting worm gear and adjusting nut are threadedly connected. The adjusting worm is meshed with the adjusting worm gear. The motor drives the adjusting worm to rotate, and the adjusting worm drives the adjusting worm gear to move up and down. The device also includes a backlash elimination mechanism comprising a locking screw, a piston cylinder, and a piston. The piston is housed in the piston cylinder, and the locking screw is housed in the adjusting worm gear. The upper end of the locking screw is fixed in the upper hole of the adjusting worm gear, and the lower end of the locking screw is fixed in the piston. The piston drives the lower end of the locking screw to move up and down. The advantages of this invention are: compact structure, use of a worm gear structure to improve the efficiency and accuracy of punch press die height adjustment, and the inclusion of a backlash elimination mechanism to eliminate thread backlash between the adjusting worm gear and the adjusting nut.

[0004] This device, by setting a piston, can make the threads between the adjusting worm gear and the adjusting nut fit tightly, thereby eliminating the thread gap between the adjusting worm gear and the adjusting nut. However, the piston is driven by hydraulic oil. When actually adjusting the mold height, it is necessary to release the tight fit between the threads of the adjusting worm gear and the adjusting nut. Therefore, the hydraulic oil needs to be drained, which is time-consuming and labor-intensive. In addition, the hydraulic oil requires a matching hydraulic pump and hydraulic pressure sensor, which increases the cost of using the device and has significant limitations.

[0005] Therefore, in order to solve the above problems, a four-column servo punch press forming device is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a four-column servo punch press forming device to solve the problems mentioned in the background art. While the device uses a piston to ensure a tight fit between the adjusting worm gear and the adjusting nut, thus eliminating the thread gap, the piston is driven by hydraulic oil. When adjusting the die height, this tight fit needs to be released, requiring the hydraulic oil to be drained, which is time-consuming and labor-intensive. Furthermore, the hydraulic oil requires a matching hydraulic pump and hydraulic pressure sensor, increasing the device's operating cost and limiting its functionality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a four-column servo punch press forming device, comprising: a main spindle, a threaded shaft being movably connected to the inner side of the main spindle via a thread, a worm gear being provided at the bottom end of the threaded shaft, a load piston being provided at the bottom end of the worm gear, a die-adjusting base being provided on the outer side of the load piston, and a piston cylinder being provided on the surface of the die-adjusting base; A drive structure is mounted on the main shaft. The drive structure includes a mounting frame, which is fixedly mounted on the top surface of the mold adjustment base. A motor is fixedly mounted on the top surface of the mounting frame. A mounting sleeve is movably mounted on the mounting frame via a bearing. An abutment block is integrally formed on the inner wall of the mounting sleeve. A rotating shaft is connected to the output end of the motor. A protrusion is integrally formed on the outer wall of the rotating shaft. A first sprocket is fixedly mounted on the outer wall of the mounting sleeve. A first gear is fixedly connected to the front end of the rotating shaft. A chain is sleeved on the outer side of the first sprocket. A second sprocket is movably mounted on the top surface of the mold adjustment base via a bearing. A worm gear is connected to the rear end of the second sprocket. A hydraulic structure is installed on the front of the mold adjustment base, and a linkage structure is installed on the hydraulic structure.

[0008] Preferably, the hydraulic structure includes a piston sleeve, the rear end of which is embedded inside the front end of the piston cylinder, an oil drain chamber is provided on the inner front end of the piston sleeve, a second gear is movably mounted on the front end of the piston sleeve via a bearing, a grooved rod is slidably mounted on the inner side of the second gear, a threaded rod is fixedly connected to the rear end of the grooved rod, and a piston rod is fixedly connected to the rear end of the threaded rod.

[0009] Preferably, the linkage structure includes a guide frame, which is fixedly installed on the front of the mold adjustment base. A movable frame is slidably installed at the front end of the guide frame. A rack plate is fixedly connected to the right end of the movable frame. Fixed rods are fixedly installed at the left and right ends of the rack plate. Movable teeth are slidably installed on the outer side of the fixed rods. A spring is fixedly connected to the surface of the movable teeth. A frame is fixedly connected to the left end of the movable frame. An upper toothed plate is integrally formed on the upper right wall of the inner side of the frame, and a lower toothed plate is integrally formed on the lower left wall of the inner side of the frame.

[0010] Preferably, the top surface of the outer thread of the threaded shaft is in contact with the top surface of the inner thread of the main shaft, and the load piston is located inside the piston cylinder.

[0011] Preferably, the protrusion and the abutment block are located on the upper and lower sides of the rotating shaft, respectively, and the protrusion and the abutment block are adapted to each other. The bottom surface of the first gear meshes with the middle of the top surface of the rack plate. One end of the chain is sleeved on the outside of the second sprocket, and the worm meshes with the worm wheel.

[0012] Preferably, the piston sleeve and piston cylinder are filled with hydraulic oil, the piston rod is located at the rear end inside the oil drain chamber, the threaded rod is threadedly connected to the front end of the piston sleeve, the second gear is located inside the frame and between the upper and lower gear plates, and the second gear is adapted to the upper and lower gear plates.

[0013] Preferably, the spring is sleeved on the outside of the fixed rod, one end of the spring is fixedly connected to the surface of the rack plate, and the movable tooth is adapted to the rack plate and the first gear.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The device of the present invention provides a protrusion on the outside of the rotating shaft, and the protrusion is staggered from the abutment block. It also provides a hydraulic structure and a linkage structure at the front end of the rotating shaft. This allows the piston rod to move inside the oil drain chamber before the motor starts and drives the mold adjustment base to adjust. This allows the hydraulic oil in the piston cylinder and piston sleeve to move into the oil drain chamber, relieving the abutment effect of the hydraulic oil on the load piston. This allows the threaded shaft to descend inside the main shaft, thereby releasing the tight fit between the threaded shaft and the main shaft before the mold adjustment base moves. This reduces the friction between the threads of the threaded shaft and the main shaft, ensuring the accuracy of the device and extending its service life.

[0015] Equipped with a drive structure, hydraulic structure, and linkage structure, the motor's clockwise rotation raises the mold-adjusting base, while its counter-clockwise rotation lowers it. The motor also drives a rotating shaft, which in turn causes the protrusions to rotate and move closer to the abutment block. This rotation of the shaft also drives the first gear, which meshes with a rack. The rotation of the first gear, through the rack, moves the movable frame along the guide rail. The first gear can rotate bidirectionally under the motor's drive, thus allowing the rack and movable frame to move bidirectionally as well. This bidirectional movement of the movable frame drives the frame itself. The frame moves in both directions. When the frame moves to the left, the upper and lower gear plates move to the left simultaneously. The upper and lower gear plates are located on opposite sides of the second gear, respectively. Therefore, when the frame moves to the left, the upper gear plate meshes with the second gear, causing it to rotate counterclockwise. The second gear rotates on the piston sleeve via bearings. A grooved rod is slidably mounted on the inner side of the second gear, and the threaded rod on the grooved rod is threadedly connected to the piston sleeve. When the second gear rotates, it drives the grooved rod to rotate, which in turn drives the threaded rod to rotate inside the piston sleeve. The threaded rod then moves forward within the piston sleeve. The movement causes the grooved rod to slide inside the second gear, allowing the piston rod to move forward inside the drain chamber under the drive of the threaded rod. This creates negative pressure inside the piston sleeve and piston cylinder, drawing some of the hydraulic oil from the piston cylinder and piston sleeve into the drain chamber. This relieves the hydraulic oil's pushing effect on the load piston, causing the threaded shaft to descend inside the main shaft. This maintains a smooth threaded engagement between the threaded shaft and the main shaft. Then, the protrusion contacts the abutment block, and the rotation of the rotating shaft drives the mounting sleeve and the first sprocket to rotate via the protrusion and abutment block. The first sprocket then drives the worm gear to rotate via the chain and the second sprocket. The worm and worm wheel mesh, and the rotation of the worm drives the threaded shaft to rotate through the worm wheel. The threaded shaft moves smoothly up and down in the main shaft through the thread, which can adjust the position of the mold base to achieve convenient adjustment of the mold height. When the protrusion contacts the abutment block, the rack plate moves to the left or right end, and the first gear contacts the movable teeth at both ends of the rack plate. The rotation of the first gear pushes the movable teeth, causing the movable teeth to slide on the fixed rod and squeeze the spring. Therefore, the rotating shaft drives the first sprocket to rotate continuously, while the first gear does not drive the rack plate to continue to move when it idles, so as to ensure that the piston rod moves a fixed distance in the oil drain chamber.After the mold height is adjusted, the motor reverses, causing the rotating shaft to reverse by a certain angle, separating the protrusion from the abutment block while maintaining their symmetrical position. This restores the original position, causing the first gear to move the rack plate in the opposite direction, resetting the movable frame and the main frame. The threaded rod then reverses and gradually extends into the piston sleeve. The piston rod resets inside the drain chamber, pushing the hydraulic oil back into the piston sleeve and piston cylinder. This fills the piston cylinder with an appropriate amount of hydraulic oil, pushing the load piston to reset. The threaded shaft then resets inside the main shaft, restoring a tight threaded fit between the threaded shaft and the main shaft to eliminate thread clearance and ensure accuracy. The entire process requires no additional power, reducing production and maintenance costs. Furthermore, the integrated design enhances the user experience. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the structure of the present invention; Figure 2 This is a front view schematic diagram of the structure of the main shaft and threaded shaft of the present invention; Figure 3 This is a front sectional view of the piston cylinder structure of the present invention; Figure 4 This is a front view schematic diagram of the drive structure, guide frame, and piston sleeve of the present invention; Figure 5 This is an exploded view of the structure of the mounting sleeve of the present invention; Figure 6 This is a side cross-sectional view of the piston sleeve and oil drain chamber of the present invention; Figure 7 This is an exploded view of the linkage structure of the present invention; Figure 8 This is an exploded view of the rack plate structure of the present invention; Figure 9 This is a front view schematic diagram of the structure of the second gear, upper gear plate, and lower gear plate of the present invention; Figure 10 This is a schematic diagram of the structure in which the threaded shaft and the main shaft are threadedly engaged.

[0017] In the diagram: 1. Main shaft; 11. Threaded shaft; 12. Worm gear; 13. Load piston; 14. Mold adjustment base; 15. Piston cylinder; 2. Drive structure; 21. Mounting bracket; 22. Motor; 23. Mounting sleeve; 24. Abutment block; 25. Rotating shaft; 26. Protrusion; 27. First sprocket; 28. First gear; 29. ​​Chain; 210. Second sprocket; 211. Worm; 3. Hydraulic structure; 31. Piston sleeve; 32. Oil drain chamber; 33. Second gear; 34. Grooved rod; 35. Threaded rod; 36. Piston rod; 4. Linkage structure; 41. Guide frame; 42. Movable frame; 43. Rack plate; 44. Fixed rod; 45. Movable tooth; 46. Spring; 48. Frame; 49. Upper toothed plate; 410. Lower toothed plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0019] Please see Figures 1-10 One embodiment provided by the present invention: The spindle 1, threaded shaft 11, worm gear 12, load piston 13, mold adjustment base 14, piston cylinder 15 and motor 22 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0020] A four-column servo punch press forming device includes: a spindle 1, a threaded shaft 11 connected to the inner side of the spindle 1 by a thread, a worm gear 12 provided at the bottom end of the threaded shaft 11, a load piston 13 provided at the bottom end of the worm gear 12, a mold adjustment base 14 provided on the outer side of the load piston 13, and a piston cylinder 15 provided on the surface of the mold adjustment base 14. A drive structure 2 is mounted on the main shaft 1. The drive structure 2 includes a mounting frame 21, which is fixedly mounted on the top surface of the mold adjustment base 14. A motor 22 is fixedly mounted on the top surface of the mounting frame 21. A mounting sleeve 23 is movably mounted on the mounting frame 21 via a bearing. An abutment block 24 is integrally formed on the inner wall of the mounting sleeve 23. A rotating shaft 25 is connected to the output end of the motor 22. A protrusion 26 is integrally formed on the outer wall of the rotating shaft 25. A first sprocket 27 is fixedly mounted on the outer wall of the mounting sleeve 23. A first gear 28 is fixedly connected to the front end of the rotating shaft 25. A chain 29 is sleeved on the outer side of the first sprocket 27. A second sprocket 210 is movably mounted on the top surface of the mold adjustment base 14 via a bearing. A worm gear 211 is connected to the rear end of the second sprocket 210. A hydraulic structure 3 is installed on the front of the mold adjustment base 14, and a linkage structure 4 is installed on the hydraulic structure 3. The device of the present invention provides a protrusion 26 on the outside of the rotating shaft 25, and the protrusion 26 is offset from the abutment block 24. The hydraulic structure 3 and the linkage structure 4 are provided at the front end of the rotating shaft 25. Before the motor 22 starts and drives the mold adjustment base 14 to adjust, it can drive the piston rod 36 to move inside the oil drain chamber 32, so that the hydraulic oil in the piston cylinder 15 and the piston sleeve 31 moves into the oil drain chamber 32, releasing the abutment effect of the hydraulic oil on the load piston 13. This allows the threaded shaft 11 to descend inside the main shaft 1, so that before the mold adjustment base 14 moves, the tight fit between the threaded shaft 11 and the main shaft 1 is released, reducing the friction between the threaded shaft 11 and the main shaft 1, ensuring the accuracy of the device, and extending the service life of the device.

[0021] Furthermore, the hydraulic structure 3 includes a piston sleeve 31, the rear end of which is embedded inside the front end of the piston cylinder 15. An oil drain chamber 32 is provided on the inner front end of the piston sleeve 31. A second gear 33 is movably mounted on the front end of the piston sleeve 31 via a bearing. A grooved rod 34 is slidably mounted on the inner side of the second gear 33. A threaded rod 35 is fixedly connected to the rear end of the grooved rod 34. A piston rod 36 is fixedly connected to the rear end of the threaded rod 35. The threaded rod 35 and the piston sleeve 31 are threadedly connected, which can ensure that the piston rod 36 has a stronger control over the flow direction of the hydraulic oil inside the piston sleeve 31 and the piston cylinder 15, so that the hydraulic oil can provide effective support for the load piston 13, and ensure that the threads between the main shaft 1 and the threaded shaft 11 are tightly fitted.

[0022] Furthermore, the linkage structure 4 includes a guide frame 41, which is fixedly installed on the front of the mold adjustment base 14. A movable frame 42 is slidably installed at the front end of the guide frame 41. A rack plate 43 is fixedly connected to the right end of the movable frame 42. Fixed rods 44 are fixedly installed at the left and right ends of the rack plate 43. Movable teeth 45 are slidably installed on the outer side of the fixed rods 44. A spring 46 is fixedly connected to the surface of the movable teeth 45. A frame 48 is fixedly connected to the left end of the movable frame 42. An upper toothed plate 49 is integrally formed on the upper right wall of the inner side of the frame 48. A lower toothed plate 410 is integrally formed on the lower left wall of the inner side of the frame 48. The forward and reverse rotation of the motor 22 can drive the second gear 33 to rotate in one direction under the action of the upper toothed plate 49 and the lower toothed plate 410, so as to realize the forward and backward movement of the piston rod 36 inside the oil drain chamber 32, providing power for the pressurization and depressurization of hydraulic oil in the piston cylinder 15.

[0023] Furthermore, the top surface of the thread on the outer wall of the threaded shaft 11 is in contact with the top surface of the thread on the inner wall of the main shaft 1, and the load piston 13 is located inside the piston cylinder 15. The threaded shaft 11 and the main shaft 1 are tightly connected, and the thread clearance is eliminated, which can prevent the die height from changing when the punch press is working, thus making the punch press more accurate.

[0024] Furthermore, the protrusion 26 and the abutment block 24 are located on the upper and lower sides of the rotating shaft 25, respectively. The protrusion 26 and the abutment block 24 are adapted to each other. The bottom surface of the first gear 28 meshes with the middle of the top surface of the rack plate 43. One end of the chain 29 is sleeved on the outside of the second sprocket 210. The worm 211 meshes with the worm wheel 12. When the rotating shaft 25 rotates initially, the protrusion 26 has not yet contacted the abutment block 24. The first gear 28 can drive the linkage structure 4 to move, so that the hydraulic structure 3 moves accordingly, while the worm 211 remains fixed, preparing for the smooth rotation of the threaded shaft 11.

[0025] Furthermore, the piston sleeve 31 and piston cylinder 15 are filled with hydraulic oil. The piston rod 36 is located at the rear end inside the oil drain chamber 32. The threaded rod 35 is threadedly connected to the front end of the piston sleeve 31. The second gear 33 is located inside the frame 48 and between the upper gear plate 49 and the lower gear plate 410. The second gear 33 is adapted to the upper gear plate 49 and the lower gear plate 410. The movement of the piston rod 36 inside the oil drain chamber 32 can drive the hydraulic oil to move inside the piston cylinder 15 and piston sleeve 31 under the action of negative pressure. The left and right movement of the frame 48 can drive the upper gear plate 49 and the lower gear plate 410 to contact the upper and lower ends of the second gear 33 respectively, so that the second gear 33 and the piston rod 36 can move in one direction.

[0026] Furthermore, spring 46 is sleeved on the outside of fixed rod 44, one end of spring 46 is fixedly connected to the surface of rack plate 43, movable tooth 45 is adapted to rack plate 43 and first gear 28, spring 46 provides power for movable tooth 45 to move to the end of fixed rod 44, so as to ensure that when rack plate 43 moves to the end, movable tooth 45 can mesh with first gear 28, providing conditions for first gear 28 to idle and drive rack plate 43 to reset.

[0027] Working principle: Hydraulic oil is added to the inside of piston sleeve 31 through the upper end. The hydraulic oil enters the inside of piston cylinder 15, which can drive the load piston 13 to move upward, so that the threaded shaft 11 moves upward in the spindle 1. The thread on the outer wall of the threaded shaft 11 is in close contact with the thread on the inner wall of the spindle 1, which can eliminate the thread gap between the threaded shaft 11 and the spindle 1, and prevent the die height from changing during the operation of the punch press, so as to make the punch press more accurate. When mold adjustment is required, motor 22 is started. Clockwise rotation of motor 22 causes mold adjustment base 14 to rise, and counterclockwise rotation causes mold adjustment base 14 to fall. Motor 22 can drive rotating shaft 25 to rotate, which in turn drives protrusion 26 to rotate and move closer to abutment block 24. When rotating shaft 25 rotates, it drives first gear 28 to rotate. First gear 28 meshes with rack plate 43. The rotation of first gear 28 drives movable frame 42 to move on guide frame 41 through rack plate 43. First gear 28 can rotate in both directions under the drive of motor 22. Therefore, rack plate 43 and movable frame 42 can also move in both directions. The bidirectional movement of movable frame 42 can drive bidirectional movement of frame 48. When frame 48 moves in both directions... When the frame 48 moves to the left, the upper gear plate 49 and the lower gear plate 410 move to the left simultaneously. The lower gear plate 410 and the upper gear plate 49 are located on opposite sides of the second gear 33, and the upper gear plate 49 and the lower gear plate 410 are located on the upper and lower sides of the second gear 33, respectively. Therefore, when the frame 48 moves to the left, the upper gear plate 49 meshes with the second gear 33, causing the second gear 33 to rotate counterclockwise. The second gear 33 rotates on the piston sleeve 31 via a bearing. A grooved rod 34 is slidably mounted on the inner side of the second gear 33, and a threaded rod 35 on the grooved rod 34 is threadedly connected to the piston sleeve 31. When the second gear 33 rotates, it drives the grooved rod 34 to rotate, and the grooved rod 34 drives the threaded rod 35 to rotate inside the piston sleeve 31. The threaded rod 35 moves forward inside the piston sleeve 31, causing... The groove rod 34 slides inside the second gear 33, allowing the piston rod 36 to move forward inside the drain chamber 32 under the drive of the threaded rod 35. This creates negative pressure inside the piston sleeve 31 and piston cylinder 15, drawing some hydraulic oil from the piston cylinder 15 and piston sleeve 31 into the drain chamber 32. This relieves the hydraulic oil's pushing effect on the load piston 13, causing the threaded shaft 11 to descend inside the main shaft 1, maintaining a smooth rotational threaded engagement between the threaded shaft 11 and the main shaft 1. Then, the protrusion 26 contacts the abutment block 24. The rotation of the rotating shaft 25 drives the mounting sleeve 23 and the first sprocket 27 to rotate via the protrusion 26 and the abutment block 24. The first sprocket 27 then drives the worm gear 211 to rotate via the chain 29 and the second sprocket 210. 211 meshes with worm gear 12. The rotation of worm 211 drives the threaded shaft 11 to rotate through worm gear 12. The threaded shaft 11 moves smoothly up and down in the main shaft 1 through the thread, which can adjust the position of the mold base 14 to achieve convenient adjustment of the mold height. When the protrusion 26 contacts the abutment block 24, the rack plate 43 moves to the left or right end. The first gear 28 contacts the movable teeth 45 at the left and right ends of the rack plate 43. The rotation of the first gear 28 will push the movable teeth 45, causing the movable teeth 45 to slide on the fixed rod 44 and squeeze the spring 46. Therefore, the rotating shaft 25 drives the first sprocket 27 to rotate continuously, while the first gear 28 will not drive the rack plate 43 to continue to move when it is idle, so as to ensure that the piston rod 36 moves a fixed distance in the oil drain chamber 32. After the mold height is adjusted, the motor 22 reverses, driving the rotating shaft 25 to reverse by a certain angle, causing the protrusion 26 to separate from the abutment block 24. The protrusion 26 and the abutment block 24 maintain a symmetrical state to restore their original positions. Therefore, the first gear 28 will drive the rack plate 43 to move in the opposite direction to reset, causing the movable frame 42 and the frame 48 to move in the opposite direction to reset. The threaded rod 35 then reverses and gradually extends into the piston sleeve 31. The piston rod 36 then resets inside the oil drain chamber 32 and pushes the hydraulic oil inside the oil drain chamber 32 back into the piston sleeve 31 and the piston cylinder 15, filling the piston cylinder 15 with an appropriate amount of hydraulic oil to push the load piston 13 to reset. The threaded shaft 11 then resets inside the main shaft 1, and the threaded shaft 11 and the main shaft 1 regain a tight fit between the threads to eliminate thread gaps and ensure accuracy. The entire process does not require additional power drive, reducing production and maintenance costs. Furthermore, the integrated device has stronger unity and ensures a better user experience.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A four-column servo punch press forming device, comprising: A main shaft (1) is connected to a threaded shaft (11) via a threaded connection on its inner side. A worm gear (12) is provided at the bottom end of the threaded shaft (11). A load piston (13) is provided at the bottom end of the worm gear (12). A mold adjustment base (14) is provided on the outer side of the load piston (13). A piston cylinder (15) is provided on the surface of the mold adjustment base (14). Its features are: A drive structure (2) is mounted on the main shaft (1). The drive structure (2) includes a mounting frame (21). The mounting frame (21) is fixedly mounted on the top surface of the mold adjustment base (14). A motor (22) is fixedly mounted on the top surface of the mounting frame (21). A mounting sleeve (23) is movably mounted on the mounting frame (21) via a bearing. An abutment block (24) is integrally formed on the inner wall of the mounting sleeve (23). A rotating shaft (25) is connected to the output end of the motor (22). A protrusion (26) is integrally formed on the outer wall of the rotating shaft (25). A first sprocket (27) is fixedly mounted on the outer wall of the mounting sleeve (23). A first gear (28) is fixedly connected to the front end of the rotating shaft (25). A chain (29) is sleeved on the outer side of the first sprocket (27). A second sprocket (210) is movably mounted on the top surface of the mold adjustment base (14) via a bearing. A worm gear (211) is connected to the rear end of the second sprocket (210). The front of the mold adjustment base (14) is equipped with a hydraulic structure (3), and a linkage structure (4) is installed on the hydraulic structure (3).

2. The four-column servo punch press forming device according to claim 1, characterized in that: The hydraulic structure (3) includes a piston sleeve (31), the rear end of which is embedded in the front end of the piston cylinder (15). An oil drain chamber (32) is opened on the inner front end of the piston sleeve (31). A second gear (33) is movably mounted on the front end of the piston sleeve (31) through a bearing. A grooved rod (34) is slidably mounted on the inner side of the second gear (33). A threaded rod (35) is fixedly connected to the rear end of the grooved rod (34). A piston rod (36) is fixedly connected to the rear end of the threaded rod (35).

3. The four-column servo punch press forming device according to claim 1, characterized in that: The linkage structure (4) includes a guide frame (41), which is fixedly installed on the front of the mold adjustment base (14). A movable frame (42) is slidably installed at the front end of the guide frame (41). A rack plate (43) is fixedly connected to the right end of the movable frame (42). Fixed rods (44) are fixedly installed at the left and right ends of the rack plate (43). Movable teeth (45) are slidably installed on the outside of the fixed rods (44). A spring (46) is fixedly connected to the surface of the movable teeth (45). A frame (48) is fixedly connected to the left end of the movable frame (42). An upper toothed plate (49) is integrally formed on the upper right wall of the inner side of the frame (48). A lower toothed plate (410) is integrally formed on the lower left wall of the inner side of the frame (48).

4. The four-column servo punch press forming device according to claim 1, characterized in that: The top surface of the outer thread of the threaded shaft (11) is in contact with the top surface of the inner thread of the main shaft (1), and the load piston (13) is located inside the piston cylinder (15).

5. The four-column servo punch press forming device according to claim 1, characterized in that: The protrusion (26) and the abutment block (24) are located on the upper and lower sides of the rotating shaft (25), respectively. The protrusion (26) and the abutment block (24) are adapted to each other. The bottom surface of the first gear (28) meshes with the middle of the top surface of the rack plate (43). One end of the chain (29) is sleeved on the outside of the second sprocket (210). The worm (211) meshes with the worm wheel (12).

6. The four-column servo punch press forming device according to claim 2, characterized in that: The piston sleeve (31) and piston cylinder (15) are filled with hydraulic oil. The piston rod (36) is located at the rear end inside the oil drain chamber (32). The threaded rod (35) is threadedly connected to the front end of the piston sleeve (31). The second gear (33) is located inside the frame (48) and between the upper gear plate (49) and the lower gear plate (410). The second gear (33) is adapted to the upper gear plate (49) and the lower gear plate (410).

7. The four-column servo punch press forming device according to claim 3, characterized in that: The spring (46) is sleeved on the outside of the fixed rod (44), one end of the spring (46) is fixedly connected to the surface of the rack plate (43), and the movable tooth (45) is adapted to the rack plate (43) and the first gear (28).

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