Automatic metal plate bending machine with adjustable bending radian

Abstract

The invention belongs to the field of metal plate bending, and particularly relates to an automatic metal plate bending machine with an adjustable bending radian, which comprises a supporting seat, an upper pressing block capable of translating is mounted above the front end of the supporting seat, and a lower pressing block capable of rotating is mounted below the front end of the supporting seat. The upper pressing block and the lower pressing block are used for fixing a to-be-bent plate, through the arrangement, the to-be-bent plate can be bent to the needed radian, meanwhile, during non-right-angle bending, a secondary pressing mode is adopted, the plate is bent, and the non-right-angle secondary pressing mode is adopted, so that the bending efficiency is greatly improved. Original needed one-time extrusion force can be dispersed to the two-side extrusion process, the pressure borne by the bending block and the lower pressing block is reduced, meanwhile, through two-time bending forming, a plate can be bent to be close to the final angle through first-time bending, the plate can be further compacted through second-time bending, the springback amount is reduced, and the production efficiency is improved. And the final forming angle is more stable and accurate.

Description

Technical Field

[0001] This invention belongs to the field of metal sheet bending, specifically an automatic metal sheet bending machine with adjustable bending curvature. Background Technology

[0002] Metal sheet bending is a common metal processing technique. It involves bending metal sheets into shapes with certain curvatures and angles to fit the overall shape of the final product, thereby producing various desired products. Metal sheets are relatively hard, so specialized bending equipment is generally used.

[0003] Different bending angles have a wide range of applications in metal processing, and each angle has its specific uses; For example: 90-degree bend: frame structure; used to manufacture various frame structures; a 90-degree bend can form a stable right-angle connection, enhancing the stability and rigidity of the structure; 45-degree bend: sloping structure: used to manufacture sloping structures, such as sloping roofs, sloping decorative panels, etc.; a 45-degree bend can form a uniform slope, suitable for occasions requiring a sloping design; Thirty-degree bend: Lightweight structure: Thirty-degree bends are suitable for manufacturing lightweight structural components, such as lightweight brackets and decorative frames. A smaller bend angle allows for weight reduction while maintaining strength. Sixty-degree bend: Triangular structure: Sixty-degree bends are often used to manufacture triangular structures, such as triangular supports and roof trusses; triangular structures have high stability and load-bearing capacity, and are suitable for occasions that need to withstand large loads; As can be seen from the above, acute angles and right angles have the most extensive uses and the largest demand for bending.

[0004] Traditional metal sheet bending equipment often has a relatively simple structure, using fixed presses and dies to bend metal sheets to a specific angle. When bending to other angles is required, the presses and dies need to be changed, which not only involves many operation steps but also results in low equipment flexibility.

[0005] Therefore, the present invention provides an automatic bending machine for metal sheets with adjustable bending curvature. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides an automatic bending machine for metal sheets with adjustable bending arc, including a support base. An upper pressure block capable of translation is installed at the upper front end of the support base, and a lower pressure block capable of rotation is installed at the lower front end of the support base. The upper and lower pressure blocks are used to fix the sheet to be bent. A notch is opened at one end of the support base, and a movable seat capable of translation is installed at the notch. A bending block capable of rotation is installed at the front end of the movable seat. A reduction self-locking motor for controlling the rotation of the bending block and the lower pressure block is provided at the rear end of both the bending block and the lower pressure block. This setup allows the equipment to bend the plate to the required curvature. For non-right-angle bends, a secondary pressing method is used to bend the plate. In right-angle bends, the bending block presses down vertically, resulting in uniform force on the entire plate. The continuous downward pressure from the lowering block ensures bending quality and reduces springback. The secondary pressing method for non-right-angle bends distributes the initial pressure across both sides, reducing the pressure on the bending and lowering blocks. The first pressing bends the plate close to the final angle, while the second further compacts it, reducing springback and resulting in a more stable and accurate final angle. Furthermore, the double pressing ensures tighter compaction at the bend, reducing internal voids and stress concentration points, improving structural strength and stability. It also allows for more precise control of the bending position and angle, minimizing material waste due to forming errors.

[0008] Preferably, the output end of the deceleration self-locking motor is fixedly connected to a drive gear, the output end of the drive gear is fixedly connected to a drive gear, a driven gear meshes with the outer side of the drive gear, and a drive shaft for transmission is fixedly connected to the middle of the driven gear. The two drive shafts are respectively fixedly connected to the bending block and the lower pressing block. The front ends of the movable seat and the support seat are both provided with embedded grooves for storing the deceleration self-locking motor. The driven gear and the drive gear are both located in the embedded grooves. The deceleration self-locking motor drives the drive gear to rotate, which in turn drives the driven gear and the drive shaft to rotate, allowing the bending block and the lower pressing block to change their angles. By setting the gear transmission, the position of the deceleration self-locking motor can be changed, making it easier to place the deceleration self-locking motor more reasonably.

[0009] Preferably, the front end of the support base has multiple parallel recycling grooves, and a movable support plate is slidably connected in the recycling groove. The movable support plate is located below the movable base, and the multiple movable support plates are arranged horizontally at equal intervals. When the pressing block changes its own angle, the multiple movable support plates are controlled to extend outward to form a horizontal support surface. Together with the top corners of the upper and lower pressing blocks, the plate to be bent is squeezed and fixed, ensuring the stability of the plate to be bent during the squeezing process and allowing the bending work to proceed smoothly.

[0010] Preferably, the bottom of the movable support plate is provided with multiple locking grooves, and an electric gear is installed at the bottom end of the recycling trough. The electric gear is fixed to the movable support plate through the locking grooves. A laser sensor is installed on the bottom outer side of the recycling trough. As the rotation angle of the lower pressure block increases, more items will leak out of the recycling trough. By determining the rotation angle data of the laser sensor and the reduction self-locking motor, the corresponding number of movable support plates are controlled to extend outward, while the movable support plates in the blocked recycling trough remain in the retracted state. This ensures that the support for the bent plate can increase as the rotation angle of the lower pressure block increases, maintaining support stability. The extension and retraction of the movable support plates are completed by the rotation and meshing of the electric gear.

[0011] Preferably, a base plate is fixedly connected to the bottom of the support base, and multiple horizontally arranged hydraulic rods II are fixedly connected to one side of the support base. A bottom slide is fixedly connected between the ends of the multiple hydraulic rods II, and multiple vertically arranged hydraulic rods I are fixedly connected to the top of the bottom slide. The tops of the multiple hydraulic rods I are fixedly connected to the movable seat. A power groove is opened at the front end of the support base near the top. A hydraulic lift is slidably engaged in the power groove. The lifting end of the hydraulic lift is fixedly connected to the upper pressure block. Multiple horizontally arranged hydraulic lifts are installed in the power groove for controlling the hydraulic lift. The third hydraulic rod, which moves horizontally, controls the horizontal movement of the bottom slide by extending and shortening the second hydraulic rod, and controls the lifting and lowering of the moving seat by extending and shortening the first hydraulic rod. This allows the moving seat to move arbitrarily in the vertical plane. The upper right notch of the support seat also facilitates the smooth movement of the moving seat. The third hydraulic rod controls the horizontal movement of the hydraulic lift, which in turn controls the lifting and lowering of the upper pressure block. This enables the upper pressure block to move freely in the vertical plane, adapting to the clamping of different plates to be bent and adjusting for changes in the angle of the lower pressure block.

[0012] Preferably, the bottom of the movable seat is provided with a sliding groove, in which a sleeve is slidably engaged, and a sliding rod is slidably connected in the sleeve. The sliding rod is fixedly connected to the support seat. A vertically arranged baffle is fixedly connected to the end of the base plate. A vertical extension plate is fixedly connected to the end of the bending block near the upper pressure block. The extension plate can slide horizontally in the sliding groove through the sleeve, and the sliding rod can slide up and down in the sleeve, thereby stabilizing the movement stability of the left side of the movable seat. The baffle at the end of the base plate represents the farthest distance that the bottom slide can slide, serving as a warning and protection function. The extension plate is detachable, which can increase the compression length of the left side of the bending block.

[0013] Preferably, the rear ends of both the pressing block and the bending block are fixedly connected to an electric telescopic rod, and the front ends of both the moving seat and the support seat are provided with a binding groove adapted to the electric telescopic rod. The binding groove is arc-shaped, and the electric telescopic rod is slidably engaged in the arc-shaped binding groove. As the moving seat or the pressing block rotates, the outer shell of the electric telescopic rod is always engaged in the binding groove. After the angle is adjusted, the electric telescopic rod extends and abuts against the bottom of the binding groove, forming a reaction force on the drive shaft, thereby fixing the moving seat or the pressing block. With the self-locking fixation of the reduction self-locking motor, the stability of the moving seat or the pressing block after the angle is adjusted is ensured.

[0014] Preferably, a locking platform is slidably engaged in the binding groove, and the outer shell of the electric telescopic rod is fixedly connected to the locking platform. An electromagnet module is fixedly connected inside the locking platform. After the angle of the moving seat or the pressing block is adjusted, the electromagnet module is activated to generate magnetic force, which attracts the locking platform to the inner wall of the binding groove, thereby completing the fixation. At the same time, the locking platform is slidably engaged in the binding groove. When the electric telescopic rod extends, the reaction force generated will directly act between the locking platform and the binding groove, thereby effectively fixing the rotating moving seat or pressing block in place and assisting the smooth progress of the subsequent extrusion process.

[0015] Preferably, the inner wall of the restraint groove is provided with two energized slots, and power modules are installed inside both the movable base and the support base. The electromagnet module in the locking platform is energized and connected to the power module through the energized slots. This arrangement ensures that the locking platform can continue to be energized with the power module no matter where it is moved.

[0016] Preferably, a chuck is fixedly connected to the rear end of the drive shaft. The chuck is rotatably engaged in the inner groove. Multiple evenly distributed friction strips are fixedly connected to the inner wall of the restraining groove. The chuck improves the connection stability between the drive shaft and the moving seat or the support seat. The friction strips can increase the friction between the end of the electric telescopic rod and the restraining groove, and between the locking platform and the restraining groove, further ensuring the locking stability of the moving seat or the lower pressure block.

[0017] The beneficial effects of this invention are as follows: 1. The present invention discloses an automatic metal sheet bending machine with adjustable bending arc. Through the arrangement of upper pressure block, lower pressure block, moving seat and bending block, the machine can not only bend the sheet to the required arc, but also bend the sheet in a double-pressure manner when bending at non-right angles. The double bending process reduces springback, making the final forming angle more stable and accurate. Furthermore, the double bending process makes the sheet more compact at the bending point, reducing internal gaps and stress concentration points, which helps to improve the structural strength and stability of the bending part. It also allows for more precise control of the bending position and angle, reducing material waste caused by forming errors.

[0018] 2. The automatic metal sheet bending machine with adjustable bending arc of the present invention uses an electric telescopic rod that is slidably engaged in an arc-shaped binding groove. As the moving seat or the lower pressure block rotates, the outer shell of the electric telescopic rod is always engaged in the binding groove. After the angle is adjusted, the electric telescopic rod extends and abuts against the bottom of the binding groove, activating the electromagnet module to generate magnetic force, which attracts the locking platform to the inner wall of the binding groove, thereby completing the fixation. At the same time, the locking platform is slidably engaged in the binding groove. When the electric telescopic rod extends, the reaction force generated will directly act between the locking platform and the binding groove, thereby effectively fixing the rotating moving seat or lower pressure block in place, ensuring the stability of the moving seat or lower pressure block after the angle is adjusted, and assisting the smooth progress of the subsequent extrusion process. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a first-view perspective perspective view of the support base and movable base of the present invention; Figure 4 This is a second-view perspective perspective view of the support base and movable base of the present invention; Figure 5 This is a perspective view of the movable base and the deceleration self-locking motor of the present invention; Figure 6 This is a perspective view of the movable base and locking platform of the present invention; In the diagram: 1. Support base; 2. Movable base; 3. Upper pressure block; 4. Lower pressure block; 5. Bending block; 6. Plate to be bent; 7. Base plate; 8. Bottom slide; 9. Hydraulic rod one; 10. Movable support plate; 11. Restraint groove; 12. Slide rod; 13. Extension plate; 14. Hydraulic rod two; 15. Power groove; 16. Hydraulic rod three; 17. Hydraulic lift; 18. Drive shaft; 19. Slide groove; 20. Sleeve; 21. Driven gear; 22. Chuck; 23. Drive gear; 24. Gearbox with reduction and self-locking motor; 25. Electric telescopic rod; 26. Friction strip; 27. Powered slot; 28. Embedded slot; 29. ​​Locking platform; 30. Electromagnetic module. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 6 As shown in the figure, an automatic metal sheet bending machine with adjustable bending arc according to an embodiment of the present invention includes a support base 1. An upper pressure block 3 capable of translation is installed at the upper front end of the support base 1, and a lower pressure block 4 capable of rotation is installed at the lower front end of the support base 1. The upper pressure block 3 and the lower pressure block 4 are used to fix the plate to be bent 6. A notch is opened at one end of the support base 1, and a movable seat 2 capable of translation is installed at the notch. A bending block 5 capable of rotation is installed at the front end of the movable seat 2. A reduction self-locking motor 24 for controlling the rotation of the bending block 5 and the lower pressure block 4 is provided at the rear end of both the bending block 5 and the lower pressure block 4. The plate to be bent 6 is placed between the upper pressure block 3 and the lower pressure block 4. The upper pressure block 3 is moved to fix the plate to be bent 6. Then, the moving seat 2 is controlled to sink, and the bending block 5 is used to bend the plate to be bent 6 at a 90-degree angle. When bending to other angles less than 90 degrees is required, the lower pressure block 4 is first controlled to rotate by the reduction self-locking motor 24. The lower pressure block 4 will rotate around the upper right corner as the rotation axis. After rotating to the required angle, the lower pressure block 4 is locked. The upper pressure block 3 will also adjust its position appropriately to ensure that it can fix the plate to be bent 6 together with the lower pressure block 4. At this time, the lower pressure block 4 The right side is tilted, and the angle between it and the horizontal plane is the same as the angle of the plate to be bent 6. During the bending process, the bending block 5 can be kept in its original shape first. The moving seat 2 and the bending block 5 are controlled to move away from the upper pressing block 3. Then, the moving seat 2 drives the bending block 5 to press down for the first time, pressing down the end of the plate to be bent 6. Then, the moving seat 2 and the bending block 5 rise, and at the same time, the reduction self-locking motor 24 is used to control the bending block 5 to rotate counterclockwise until the angle between the bending block 5 and the lower pressing block 4 is consistent and locked. Then, the moving seat 2 controls the bending block 5 to press down for the second time until... The plate to be bent 6 is fully fitted with the pressure block 4, allowing the plate to be bent to the required angle. This setup not only allows the equipment to bend the plate to be bent 6 to the required curvature, but also employs a secondary pressing method for bending the plate during non-right-angle bends. Because during right-angle bends, the bending block 5 presses down vertically, resulting in even force distribution across the entire plate, and the pressure block 4 continuously applies pressure to the plate to be bent 6 as it descends, ensuring bending quality and reducing plate springback. The secondary pressing method for non-right-angle bends not only distributes the required single-stage pressure... During the extrusion process on both sides, the pressure on the bending block 5 and the lower pressing block 4 is reduced. At the same time, through two bending processes, the first bending can bend the plate to near the final angle, and the second bending can further compact the plate, reduce the amount of springback, and make the final forming angle more stable and accurate. Furthermore, the two bending processes can make the plate more tightly compacted at the bending point, reduce internal gaps and stress concentration points, help improve the structural strength and stability of the bending part, and also more accurately control the bending position and angle, reducing material waste caused by forming errors.

[0023] The output end of the deceleration self-locking motor 24 is fixedly connected to the drive gear 23, the output end of the drive gear 23 is fixedly connected to the drive gear 23, the outer side of the drive gear 23 is meshed with the driven gear 21, the middle part of the driven gear 21 is fixedly connected to the drive shaft 18 for transmission, the two drive shafts 18 are respectively fixedly connected to the bending block 5 and the lower pressing block 4, the front end of the moving seat 2 and the support seat 1 are both provided with an embedded groove 28 for storing the deceleration self-locking motor 24, and the driven gear 21 and the drive gear 23 are both located in the embedded groove 28; During operation, the self-locking deceleration motor 24 drives the drive gear 23 to rotate, which in turn drives the driven gear 21 and the drive shaft 18 to rotate, allowing the bending block 5 and the lower pressing block 4 to change their angles. By setting up gear transmission, the position of the self-locking deceleration motor 24 can be changed, making it easier to place the self-locking deceleration motor 24 more reasonably. At the same time, the diameter of the drive gear 23 is smaller than that of the driven gear 21, and the force transmission is a lifting process, which can stably drive the driven gear 21. When it is self-locking, the reverse transmission is a force-multiplying lever, which can stably lock the drive shaft 18.

[0024] The front end of the support base 1 is provided with multiple parallel recycling slots, and a movable support plate 10 is slidably connected in the recycling slot. The movable support plate 10 is located below the movable base 2, and the multiple movable support plates 10 are arranged horizontally at equal intervals. During operation, after the lower pressure block 4 changes its own angle, multiple movable support plates 10 are controlled to extend outward to form a horizontal support surface. Together with the top corners of the upper pressure block 3 and the lower pressure block 4, the plate to be bent 6 is squeezed and fixed, ensuring the stability of the plate to be bent 6 during the squeezing process and allowing the bending work to proceed smoothly.

[0025] The bottom of the movable support plate 10 is provided with multiple toothed grooves, and an electric gear is installed at the bottom end of the recycling tank. The electric gear is fixed to the movable support plate 10 through the toothed grooves, and a laser sensor is installed at the bottom outer side of the recycling tank. During operation, as the rotation angle of the lower pressure block 4 increases, more items leak out of the recycling tank. By dual determination of the rotation angle data from the laser sensor and the geared self-locking motor 24, the corresponding number of movable support plates 10 are controlled to extend outward, while the movable support plates 10 in the blocked recycling tank remain in the retracted state. This ensures that the support for the bent plate 6 can increase as the rotation angle of the lower pressure block 4 increases, maintaining support stability. The movable support plates 10 are driven by the rotation and meshing of the electric gear to complete the extension and retraction.

[0026] The bottom of the support base 1 is fixedly connected to a base plate 7. A plurality of horizontally arranged hydraulic rods 14 are fixedly connected to one side of the support base 1. A bottom slide 8 is fixedly connected between the ends of the plurality of hydraulic rods 14. A plurality of vertically arranged hydraulic rods 9 are fixedly connected to the top of the bottom slide 8. The tops of the plurality of hydraulic rods 9 are fixedly connected to the movable base 2. A power groove 15 is opened at the front end of the support base 1 near the top. A hydraulic lift 17 is slidably engaged in the power groove 15. The lifting end of the hydraulic lift 17 is fixedly connected to the upper pressure block 3. A plurality of horizontally arranged hydraulic rods 16 are installed in the power groove 15 for controlling the horizontal movement of the hydraulic lift 17. During operation, the horizontal movement of the bottom slide table 8 is controlled by the extension and retraction of hydraulic rod 2 14, and the lifting and lowering of the moving seat 2 is controlled by the extension and retraction of hydraulic rod 1 9. This allows the moving seat 2 to move arbitrarily on the vertical plane. The upper right notch of the support seat 1 is also designed to allow the moving seat 2 to move smoothly. Hydraulic rod 3 16 controls the horizontal movement of the hydraulic lift 17, and the hydraulic lift 17 controls the lifting and lowering of the upper pressure block 3. This enables the upper pressure block 3 to move freely on the vertical plane, adapting to the clamping of different plates to be bent 6 and the adjustment work when the angle of the lower pressure block 4 changes.

[0027] The bottom of the movable seat 2 is provided with a sliding groove 19, a sleeve 20 is slidably engaged in the sliding groove 19, a sliding rod 12 is slidably connected in the sleeve 20, the sliding rod 12 is fixedly connected to the support seat 1, a vertically arranged baffle is fixedly connected to the end of the bottom plate 7, and a vertically extended plate 13 is fixedly connected to one end of the bending block 5 near the upper pressing block 3. During operation, the sleeve 20 can slide horizontally in the slide groove 19, and the slide rod 12 can slide up and down in the sleeve 20 to stabilize the movement stability of the left side of the moving seat 2; the baffle at the end of the base plate 7 is the farthest distance that the bottom slide table 8 can slide, which serves as a warning and protection function; the extension plate 13 is detachable and can increase the compression length on the left side of the bending block 5.

[0028] The rear ends of the lower pressing block 4 and the bending block 5 are both fixedly connected to an electric telescopic rod 25. The front ends of the moving seat 2 and the support seat 1 are both provided with a binding groove 11 that is adapted to the electric telescopic rod 25. The binding groove 11 is arc-shaped. During operation, the electric telescopic rod 25 slides and engages in the arc-shaped restraint groove 11. As the moving seat 2 or the lower pressure block 4 rotates, the outer shell of the electric telescopic rod 25 remains engaged in the restraint groove 11. After the angle adjustment is completed, the electric telescopic rod 25 extends and abuts against the bottom of the restraint groove 11, generating a reaction force on the drive shaft 18, thereby fixing the moving seat 2 or the lower pressure block 4. With the self-locking fixation of the reduction self-locking motor 24, the stability of the moving seat 2 or the lower pressure block 4 after the angle is adjusted is ensured.

[0029] A locking platform 29 is slidably engaged in the binding groove 11. The outer shell of the electric telescopic rod 25 is fixedly connected to the locking platform 29. An electromagnet module 30 is fixedly connected inside the locking platform 29. During operation, once the angle of the movable seat 2 or the lower pressure block 4 is adjusted, the electromagnet module 30 is activated to generate magnetic force, which attracts the locking platform 29 to the inner wall of the binding groove 11, thereby completing the fixation. At the same time, the locking platform 29 is slidably engaged in the binding groove 11. When the electric telescopic rod 25 extends, the resulting reaction force will directly act between the locking platform 29 and the binding groove 11, thereby effectively fixing the movable seat 2 or the lower pressure block 4 that has been rotated into position, assisting in the smooth progress of the subsequent extrusion process.

[0030] Two energized slots 27 are provided on the inner wall of the restraint groove 11. Power modules are installed inside both the movable base 2 and the support base 1. The electromagnet module 30 in the locking platform 29 is energized and connected to the power module through the energized slots 27. During operation, this setting ensures that the locking platform 29 can still be continuously energized with the power module no matter where it is moved.

[0031] A chuck 22 is fixedly connected to the rear end of the drive shaft 18. The chuck 22 is rotatably engaged in the inner groove 28. A plurality of evenly distributed friction strips 26 are fixedly connected to the inner wall of the restraint groove 11. During operation, the chuck 22 improves the connection stability between the drive shaft 18 and the moving seat 2 or the support seat 1. The friction strip 26 can increase the friction between the end of the electric telescopic rod 25 and the restraint groove 11, and between the locking platform 29 and the restraint groove 11, further ensuring the locking stability of the moving seat 2 or the lower pressure block 4.

[0032] During operation, the plate to be bent 6 is placed between the upper pressure block 3 and the lower pressure block 4. The upper pressure block 3 moves to fix the plate to be bent 6. Then, the moving seat 2 is controlled to sink, and the bending block 5 is used to bend the plate to be bent 6 at a 90-degree angle. When bending to other angles less than 90 degrees is required, the lower pressure block 4 is first rotated by the reduction self-locking motor 24. The lower pressure block 4 will rotate around the upper right corner as the rotation axis. After rotating to the required angle, the lower pressure block 4 is locked. The upper pressure block 3 will also adjust its position appropriately to ensure that it can fix the plate to be bent 6 together with the lower pressure block 4. At this time, the right side of the lower pressure block 4 is tilted and is parallel to the horizontal. The included angle of the surface is the same as the angle of the plate to be bent 6. During the bending process, the bending block 5 can be kept in shape first. The moving seat 2 and the bending block 5 are controlled to move away from the upper pressing block 3. Then the moving seat 2 drives the bending block 5 to press down for the first time, pressing down the end of the plate to be bent 6. Then the moving seat 2 and the bending block 5 rise. At the same time, the reduction self-locking motor 24 is used to control the bending block 5 to rotate. It rotates counterclockwise until the angle of the bending block 5 and the lower pressing block 4 are consistent and locked. Then the moving seat 2 controls the bending block 5 to press down for the second time until the plate to be bent 6 and the lower pressing block 4 are completely in contact, so that the plate to be bent 6 is bent to the required angle. This setup allows the equipment to bend the plate 6 to the required curvature. Furthermore, during non-right-angle bends, a secondary pressing method is used to bend the plate. During right-angle bends, the bending block 5 presses down vertically, resulting in uniform force on the entire plate. The pressing block 4 continuously applies pressure to the plate 6 as it descends, ensuring bending quality and reducing springback. The secondary pressing method for non-right-angle bends distributes the required single-stage pressure to both sides, reducing the pressure on the bending block 5 and pressing block 4. The first bending press folds the plate close to the final angle, while the second press further compacts the plate, reducing springback and making the final angle more stable and accurate. The double bending process also ensures a tighter compaction at the bend, reducing internal voids and stress concentration points, improving the structural strength and stability of the bent area. It also allows for more precise control of the bending position and angle, reducing material waste due to forming errors.

[0033] The reduction self-locking motor 24 drives the drive gear 23 to rotate, which in turn drives the driven gear 21 and the drive shaft 18 to rotate, allowing the bending block 5 and the lower pressing block 4 to change their own angles. By setting the gear transmission, the position of the reduction self-locking motor 24 can be changed, making it easier to place the reduction self-locking motor 24 more reasonably.

[0034] When the lower pressure block 4 changes its angle, it controls multiple movable support plates 10 to extend outward to form a horizontal support surface. Together with the top corners of the upper pressure block 3 and the lower pressure block 4, it squeezes and fixes the plate to be bent 6, ensuring the stability of the plate to be bent 6 during the squeezing process and allowing the bending work to proceed smoothly.

[0035] As the rotation angle of the lower pressure block 4 increases, more items leak out of the recycling tank. By dual determination of the rotation angle data of the laser sensor and the reduction self-locking motor 24, the corresponding number of moving support plates 10 are controlled to extend outward, while the moving support plates 10 in the blocked recycling tank remain in the retracted state, thereby ensuring that the support for the bent plate 6 can increase as the rotation angle of the lower pressure block 4 increases, maintaining support stability; the moving support plates 10 are driven by the rotation meshing of the electric gear to complete the extension and retraction work.

[0036] The horizontal movement of the bottom slide table 8 is controlled by the extension and retraction of the hydraulic rod 14, and the lifting and lowering of the moving seat 2 is controlled by the extension and retraction of the hydraulic rod 19. This allows the moving seat 2 to move arbitrarily on the vertical plane. The upper right notch of the support seat 1 is also designed to allow the moving seat 2 to move smoothly. The hydraulic rod 16 controls the horizontal movement of the hydraulic lift 17, and the hydraulic lift 17 controls the lifting and lowering of the upper pressure block 3. This enables the upper pressure block 3 to move freely on the vertical plane, adapting to the clamping of different plates to be bent 6 and the adjustment work when the angle of the lower pressure block 4 changes.

[0037] The sleeve 20 can slide horizontally in the slide groove 19, and the slide rod 12 can slide up and down in the sleeve 20 to stabilize the movement stability of the left side of the moving seat 2; the baffle at the end of the base plate 7 is the farthest distance that the bottom slide table 8 can slide, which serves as a warning and protection function; the extension plate 13 is detachable and can increase the compression length on the left side of the bending block 5.

[0038] The electric telescopic rod 25 is slidably engaged in the arc-shaped restraint groove 11. As the moving seat 2 or the lower pressure block 4 rotates, the outer shell of the electric telescopic rod 25 is always engaged in the restraint groove 11. After the angle adjustment is completed, the electric telescopic rod 25 extends and abuts against the bottom of the restraint groove 11, forming a reaction force on the drive shaft 18, thereby fixing the moving seat 2 or the lower pressure block 4. With the self-locking fixation of the reduction self-locking motor 24, the stability of the moving seat 2 or the lower pressure block 4 after the angle is adjusted is ensured.

[0039] Once the angle of the movable seat 2 or the pressing block 4 is adjusted, the electromagnet module 30 is activated to generate magnetic force, which attracts the locking platform 29 to the inner wall of the binding groove 11, thereby completing the fixation. At the same time, the locking platform 29 is slidably engaged in the binding groove 11. When the electric telescopic rod 25 extends, the resulting reaction force will directly act between the locking platform 29 and the binding groove 11, thereby effectively fixing the movable seat 2 or the pressing block 4 that has been rotated into position, assisting in the smooth progress of the subsequent extrusion process.

[0040] The chuck 22 improves the connection stability between the drive shaft 18 and the moving seat 2 or the support seat 1. The friction strip 26 can increase the friction between the end of the electric telescopic rod 25 and the restraint groove 11, and between the locking platform 29 and the restraint groove 11, further ensuring the locking stability of the moving seat 2 or the lower pressure block 4.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic bending machine for metal sheets with adjustable bending radius, characterized in that: The device includes a support base, with an upper pressure block that can be translated installed at the upper front end of the support base and a lower pressure block that can be rotated installed at the lower front end of the support base. The upper and lower pressure blocks are used to fix the plate to be bent. One end of the support base has a notch, and a movable seat that can be translated is installed at the notch. A bending block that can be rotated is installed at the front end of the movable seat. The rear ends of the bending block and the lower pressure block are provided with a speed reduction self-locking motor for controlling the rotation of the bending block and the lower pressure block.

2. The automatic bending machine for metal sheets with adjustable bending radius according to claim 1, characterized in that: The output end of the deceleration self-locking motor is fixedly connected to a drive gear, the output end of the drive gear is fixedly connected to a drive gear, a driven gear meshes with the outer side of the drive gear, and a drive shaft for transmission is fixedly connected to the middle of the driven gear. The two drive shafts are respectively fixedly connected to the bending block and the lower pressing block. The front ends of the moving base and the support base are both provided with embedded grooves for storing the deceleration self-locking motor, and the driven gear and the drive gear are both located in the embedded grooves.

3. The automatic bending machine for metal sheets with adjustable bending radius according to claim 2, characterized in that: The front end of the support base is provided with multiple parallel recycling slots, and a movable support plate is slidably connected in the recycling slot. The movable support plate is located below the movable base, and the multiple movable support plates are arranged horizontally at equal intervals.

4. The automatic bending machine for metal sheets with adjustable bending radius according to claim 3, characterized in that: The bottom of the movable support plate is provided with multiple toothed grooves, and an electric gear is installed at the bottom end of the recycling tank. The electric gear is fixed to the movable support plate through the toothed grooves, and a laser sensor is installed on the bottom outer side of the recycling tank.

5. The automatic metal sheet bending machine with adjustable bending radius according to claim 4, characterized in that: A base plate is fixed to the bottom of the support base. Multiple horizontally arranged hydraulic rods 2 are fixed to one side of the support base. A bottom slide is fixed between the ends of the multiple hydraulic rods 2. Multiple vertically arranged hydraulic rods 1 are fixed to the top of the bottom slide. The tops of the multiple hydraulic rods 1 are fixed to the movable seat. A power groove is opened at the front end of the support base near the top. A hydraulic lift is slidably engaged in the power groove. The lifting end of the hydraulic lift is fixed to the upper pressure block. Multiple horizontally arranged hydraulic rods 3 are installed in the power groove to control the horizontal movement of the hydraulic lift.

6. The automatic bending machine for metal sheets with adjustable bending radius according to claim 5, characterized in that: The bottom of the movable seat is provided with a sliding groove, in which a sleeve is slidably engaged, and a sliding rod is slidably connected in the sleeve. The sliding rod is fixedly connected to the support seat. A vertically arranged baffle is fixedly connected to the end of the base plate, and a vertically extended plate is fixedly connected to the end of the bending block near the upper pressing block.

7. An automatic metal sheet bending machine with adjustable bending radius according to claim 6, characterized in that: The rear ends of the lower pressing block and the bending block are both fixed with electric telescopic rods, and the front ends of the moving seat and the support seat are both provided with restraint grooves adapted to the electric telescopic rods. The restraint grooves are arc-shaped.

8. An automatic metal sheet bending machine with adjustable bending radius according to claim 7, characterized in that: A locking platform is slidably engaged in the restraint groove, and the outer shell of the electric telescopic rod is fixedly connected to the locking platform. An electromagnet module is fixedly connected inside the locking platform.

9. An automatic metal sheet bending machine with adjustable bending radius according to claim 8, characterized in that: Two energized slots are provided on the inner wall of the restraint groove. Power modules are installed inside both the moving base and the support base. The electromagnet module in the locking platform is energized and connected to the power module through the energized slots.

10. An automatic metal sheet bending machine with adjustable bending radius according to claim 9, characterized in that: A chuck is fixedly connected to the rear end of the drive shaft. The chuck rotates and engages in the inner groove. Multiple evenly distributed friction strips are fixedly connected to the inner wall of the restraint groove.

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