An automatic metal plate bending machine with adjustable bending radius

Abstract

The application belongs to the field of metal plate bending, and particularly relates to an automatic metal plate bending machine with adjustable bending radius, which comprises a supporting seat, an upper pressing block capable of translating is installed on the upper front end of the supporting seat, a lower pressing block capable of rotating is installed on the lower front end of the supporting seat, and the upper pressing block and the lower pressing block are used for fixing a plate to be bent. Through the arrangement, the device can bend the plate to be bent to the required radius, and when the plate is bent at a non-right angle, the plate is bent through twice pressing. The twice pressing at a non-right angle can not only disperse the original required pressing force to the two sides of the pressing process, thereby reducing the pressure bearing of the pressing blocks, but also can bend the plate to the final angle through twice pressing. The first pressing can bend the plate to the final angle, and the second pressing can further compact the plate, thereby reducing the rebound amount and making the final forming angle more stable and accurate.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of metal plate bending, in particular to an automatic metal plate bending machine with adjustable bending radius. BACKGROUND

[0002] Metal plate bending is a common metal processing technology that processes metal plates into shapes with certain radii and angles to match the overall shape of subsequent finished products, thereby processing various required products. Metal plates have high hardness and are generally processed using dedicated bending equipment.

[0003] Different bending angles have a wide range of applications in metal processing, and each angle has its specific purpose.

[0004] For example, ninety-degree bending: frame structure; used for manufacturing various frame structures; ninety-degree bending can form stable right-angle connections, enhancing the stability and rigidity of the structure.

[0005] Forty-five-degree bending: inclined surface structure; used for manufacturing inclined surface structures, such as inclined roof, inclined decorative plate, etc.; forty-five-degree bending can form uniform inclined surfaces, suitable for occasions requiring inclined design.

[0006] Thirty-degree bending: lightweight structure; thirty-degree bending is suitable for manufacturing lightweight structural components, such as lightweight supports, decorative frames, etc. Smaller bending angles can reduce the weight of the components while maintaining certain strength.

[0007] Sixty-degree bending: triangular structure; sixty-degree bending is commonly used for manufacturing triangular structures, such as triangular supports, roof trusses, etc.; triangular structures have high stability and carrying capacity, suitable for occasions requiring to bear large loads.

[0008] As can be seen above, acute and right-angle bending has the most extensive and largest demand.

[0009] Traditional metal plate bending equipment often has a simple structure and uses fixed dies and punches for cooperation, which can only bend metal plates to specific angles. When bending to other angles is required, the dies and punches need to be replaced, which not only has many operation steps but also has low equipment flexibility.

[0010] Therefore, the application provides an automatic metal plate bending machine with adjustable bending radius. SUMMARY

[0011] To compensate for the deficiencies of the prior art and solve at least one technical problem raised in the background.

[0012] The technical scheme adopted by the present application to solve its technical problems is: the automatic bending machine with adjustable bending radius for metal plates comprises a supporting seat, an upper pressing block capable of translating is installed on the upper front end of the supporting seat, a lower pressing block capable of rotating is installed on the lower front end of the supporting seat, the upper pressing block and the lower pressing block are used for fixing a plate to be bent, a notch is formed in one end of the supporting seat, and a moving seat capable of translating is installed in the notch, a pressing block capable of rotating is installed on the front end of the moving seat, the rear ends of the pressing block and the lower pressing block are both provided with a speed-reducing self-locking motor used for controlling the pressing block and the lower pressing block to rotate.

[0013] Through the arrangement, the device can bend the plate to be bent to the required radius, and when the bending is not at a right angle, the plate is bent by means of secondary pressing, because when the bending is at a right angle, the pressing block vertically presses downward, the whole plate is uniformly stressed, and the pressing block continuously applies pressure to the plate to be bent in the process of continuously sinking, so that the bending quality can be ensured and the rebound of the plate can be reduced; the secondary pressing when the bending is not at a right angle can not only disperse the original pressing force to the pressing process on both sides, so as to reduce the pressure borne by the pressing block and the lower pressing block, but also can further compact the plate by means of twice pressing forming, so that the plate can be bent to an angle close to the final angle in the first pressing, the plate can be further compacted in the second pressing, the rebound amount can be reduced, the final forming angle can be more stable and accurate, and twice pressing forming can make the plate more compact at the bending part, reduce the internal gap and stress concentration point, help to improve the structural strength and stability of the bending part, and more accurately control the bending position and angle, so as to reduce the material waste caused by forming errors.

[0014] Preferably, the output end of the speed-reducing self-locking motor is fixedly connected with a driving gear, the outer side of the driving gear is engaged with a driven gear, the middle part of the driven gear is fixedly connected with a driving shaft used for transmission, the two driving shafts are respectively fixedly connected with the pressing block and the lower pressing block, the front ends of the moving seat and the supporting seat are both provided with an embedded groove used for storing the speed-reducing self-locking motor, and the driven gear and the driving gear are both located in the embedded groove. The speed-reducing self-locking motor drives the driving gear to rotate, and then drives the driven gear and the driving shaft to rotate, so that the pressing block and the lower pressing block can change their angles. By means of gear transmission, the position of the speed-reducing self-locking motor can be changed, so as to more reasonably place the speed-reducing self-locking motor.

[0015] Preferably, a plurality of parallelly arranged recycling grooves are formed in the front end of the supporting seat, and a moving support plate is slidably connected in the recycling groove. The moving support plate is located below the upper pressing block, and the plurality of moving support plates are horizontally and equidistantly arranged. When the lower pressing block changes its angle, the plurality of moving support plates are controlled to outwardly extend to form a horizontal support surface, and cooperate with the top angle of the upper pressing block and the lower pressing block to press and fix the plate to be bent, so as to ensure the stability of the plate to be bent in the pressing process and smoothly perform the bending work.

[0016] Preferably, the bottom of the moving support plate is provided with a plurality of clamping grooves, the end of the recycling groove is provided with an electric gear near the bottom, the electric gear is fixedly connected with the moving support plate through the clamping groove, and the outer bottom of the recycling groove is provided with a laser sensor. As the rotation angle of the pressing block increases, the amount of leakage of the recycling groove will be more. Through the double determination of the rotation angle data of the laser sensor and the reduction self-locking motor, the corresponding number of moving support plates is controlled to extend outward, while the moving support plates in the blocked recycling groove still maintain the recycling state, so that the support for the bending plate can be increased with the increase of the rotation angle of the pressing block, and the support stability is maintained. The moving support plate is driven to extend and retract through the rotation engagement of the electric gear.

[0017] Preferably, the bottom of the support seat is fixedly connected with a bottom plate, one side of the support seat is fixedly connected with a plurality of horizontally arranged hydraulic rods two, the ends of the plurality of hydraulic rods two are fixedly connected with a bottom sliding table, the top of the bottom sliding table is fixedly connected with a plurality of vertically arranged hydraulic rods one, the top of the plurality of hydraulic rods one is fixedly connected with a moving seat, the front end of the support seat is provided with a power groove near the top, the hydraulic lift is slidably connected in the power groove, the lifting end of the hydraulic lift is fixedly connected with the upper pressing block, and a plurality of horizontally arranged hydraulic rods three are arranged in the power groove and used for controlling the horizontal movement of the hydraulic lift. The horizontal movement of the bottom sliding table is controlled by the elongation and shortening of the hydraulic rods two, the lifting of the moving seat is controlled by the elongation and shortening of the hydraulic rods one, and then the moving seat can be arbitrarily moved in the vertical plane. The right upper notch of the support seat is also used for smoothly moving the moving seat. The hydraulic rods three control the horizontal movement of the hydraulic lift, the hydraulic lift controls the lifting of the upper pressing block, and then the free movement process of the upper pressing block in the vertical plane is realized, so that the clamping and pressing of different bending plates and the adjustment work when the angle of the pressing block changes are adapted.

[0018] Preferably, the bottom of the moving seat is provided with a sliding groove, a sleeve is slidably connected in the sliding groove, and a sliding rod is slidably connected in the sleeve. The sliding rod is fixedly connected with the support seat, the end of the bottom plate is fixedly connected with a vertically arranged baffle, and the end of the pressing block near the upper pressing block is fixedly connected with a vertically arranged extension plate. The sleeve can slide horizontally in the sliding groove, and the sliding rod can slide up and down in the sleeve, so as to stabilize the movement stability of the left side of the moving seat. The baffle at the end of the bottom plate is the farthest distance that the bottom sliding table can slide, which is used for warning and protection. The extension plate is detachable, and the extrusion length of the left side of the pressing block can be increased.

[0019] Preferably, the rear end of the lower pressing block and the bending block is fixed with an electric telescopic rod, the front end of the moving seat and the supporting seat is provided with a binding slot matched with the electric telescopic rod, the binding slot is arranged in an arc shape, the electric telescopic rod is slidingly connected in the arc-shaped binding slot, with the rotation of the moving seat or the lower pressing block, the shell part of the electric telescopic rod is always connected in the binding slot, when the angle adjustment is completed, the electric telescopic rod is elongated and abuts against the bottom of the binding slot to form a reaction force on the driving shaft, thereby fixing the moving seat or the lower pressing block, cooperating with the self-locking fixation of the reduction self-locking motor to ensure the stability of the moving seat or the lower pressing block after the angle adjustment.

[0020] Preferably, a locking table is slidingly connected in the binding slot, the shell part of the electric telescopic rod is fixed with the locking table, the inside of the locking table is fixed with an electromagnet module, when the angle adjustment of the moving seat or the lower pressing block is completed, the electromagnet module is started to generate a magnetic force to adsorb the locking table and the inner wall of the binding slot, thereby completing the fixation, and the locking table is slidingly connected in the binding slot, when the electric telescopic rod is elongated, the reaction force is directly applied between the locking table and the binding slot, thereby effectively fixing the moving seat or the lower pressing block rotated in place to assist the smooth progress of the subsequent extrusion process.

[0021] Preferably, two power supply clamping grooves are formed in the inner wall of the binding slot, the inside of the moving seat and the supporting seat is provided with a power supply module, the electromagnet module in the locking table is connected in power supply with the power supply module through the power supply clamping grooves, through this setting, no matter where the locking table moves, it can still be continuously powered with the power supply module.

[0022] Preferably, the rear end of the driving shaft is fixed with a chuck, the chuck is rotationally connected in the embedded slot, a plurality of uniformly distributed friction strips are fixed on the inner wall of the binding slot, the setting of the chuck improves the connection stability of the driving shaft and the moving seat or the supporting seat, the friction strips can increase the friction force between the end of the electric telescopic rod and the binding slot and between the locking table and the binding slot, thereby further ensuring the locking stability of the moving seat or the lower pressing block.

[0023] The beneficial effects of the present application are as follows:

[0024] 1. The metal plate automatic bending machine with adjustable bending radius provided by the present application is provided with an upper pressing block, a lower pressing block, a moving seat and a bending block, so that the equipment can bend the to-be-bent plate to the required radius, and when the plate is bent at a non-right angle, the plate is bent in a two-time pressing manner, the two-time pressing forming can reduce the rebound amount, the finally formed angle is more stable and accurate, the two-time pressing forming can make the plate more tightly compacted at the bending position, reduces the internal gap and stress concentration points, helps to improve the structural strength and stability of the bending position, and can more accurately control the bending position and angle and reduce the material waste caused by forming errors.

[0025] 2. The automatic bending machine with adjustable bending radius of metal plate according to the present application, the electric telescopic rod is slidably clamped in the arc-shaped restraint groove, with the rotation of the moving seat or the pressing block, the shell part of the electric telescopic rod is always clamped in the restraint groove, when the angle adjustment is completed, the electric telescopic rod is elongated and abuts against the bottom of the restraint groove, the electromagnetic module is started to generate magnetic force to adsorb the locking table and the inner wall of the restraint groove, so that the fixing is completed, at the same time, the locking table is slidably clamped in the restraint groove, when the electric telescopic rod is elongated, the reaction force is directly applied between the locking table and the restraint groove, thereby effectively fixing the moving seat or the pressing block which is rotated in place, ensuring the stability of the moving seat or the pressing block after the angle adjustment and assisting the smooth progress of the subsequent extrusion process. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below in conjunction with the drawings.

[0027] Figure 1 is a perspective view of the present application;

[0028] Figure 2 is a front view of the present application;

[0029] Figure 3 is a first perspective view of the support seat and the moving seat of the present application;

[0030] Figure 4 is a second perspective view of the support seat and the moving seat of the present application;

[0031] Figure 5 is a perspective view of the moving seat and the reduction self-locking motor of the present application;

[0032] Figure 6 is a perspective view of the moving seat and the locking table of the present application;

[0033] In the drawings: 1, support seat; 2, moving seat; 3, upper pressing block; 4, lower pressing block; 5, bending block; 6, plate to be bent; 7, bottom plate; 8, bottom sliding table; 9, hydraulic rod one; 10, moving support plate; 11, restraint groove; 12, sliding rod; 13, extension plate; 14, hydraulic rod two; 15, power groove; 16, hydraulic rod three; 17, hydraulic elevator; 18, drive shaft; 19, sliding groove; 20, sleeve; 21, driven gear; 22, chuck; 23, driving gear; 24, reduction self-locking motor; 25, electric telescopic rod; 26, friction strip; 27, electrified clamping groove; 28, embedded groove; 29, locking table; 30, electromagnetic module. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0035] As shown in Figures 1 to 6 The application discloses a metal plate automatic bending machine with adjustable bending radius, which comprises a supporting seat 1, an upper pressing block 3 capable of translating is arranged on the upper front end of the supporting seat 1, a lower pressing block 4 capable of rotating is arranged on the lower front end of the supporting seat 1, the upper pressing block 3 and the lower pressing block 4 are used for fixing a to-be-bent plate 6, a gap is formed in one end of the supporting seat 1, a moving seat 2 capable of translating is arranged in the gap, a pressing bending block 5 capable of rotating is arranged on the front end of the moving seat 2, a speed reduction self-locking motor 24 for controlling the rotation of the pressing bending block 5 and the lower pressing block 4 is arranged at the rear end of the pressing bending block 5 and the lower pressing block 4.

[0036] The to-be-bent plate 6 is placed between the upper pressing block 3 and the lower pressing block 4, the to-be-bent plate 6 is fixed by the movement of the upper pressing block 3, then the moving seat 2 is controlled to sink, and the to-be-bent plate 6 is bent by 90 degrees by the bending block 5; when it is needed to be bent to an angle smaller than 90 degrees, the lower pressing block 4 is first controlled to rotate by the speed-reducing self-locking motor 24, the lower pressing block 4 rotates around the right upper corner as the rotation shaft, and the lower pressing block 4 is locked after being rotated to the required angle, and the upper pressing block 3 also adjusts its position appropriately to ensure that the to-be-bent plate 6 can be fixed together with the lower pressing block 4, at this time, the right side of the lower pressing block 4 is inclined and the included angle with the horizontal plane is the same as the angle of the to-be-bent plate 6; during the bending process, the bending block 5 can be kept in the same shape, the moving seat 2 and the bending block 5 are first 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, the end of the to-be-bent plate 6 is pressed down, then the moving seat 2 and the bending block 5 are lifted, the speed-reducing self-locking motor 24 is used to control the bending block 5 to rotate, and the bending block 5 is rotated counterclockwise to the same angle as the lower pressing block 4 and is locked, then the moving seat 2 controls the bending block 5 to press down for the second time until the to-be-bent plate 6 is completely attached to the lower pressing block 4, so that the to-be-bent plate 6 is bent to the required angle; through this kind of setting, the equipment can not only bend the to-be-bent plate 6 to the required radian, but also bend the plate in a two-time pressing manner when it is not a right-angle bending; because the right-angle bending is vertical pressing of the bending block 5, the whole plate is uniformly stressed, and the lower pressing block 4 continuously applies pressure to the to-be-bent plate 6 during the continuous sinking process, which can ensure the bending quality and reduce the plate springback; the two-time pressing manner for non-right-angle bending can not only disperse the original required pressing force to the two-side pressing process, reduce the bearing pressure of the bending block 5 and the lower pressing block 4, but also through two-time bending forming, the first-time bending can bend the plate to the angle close to the final angle, and the second-time bending can further compact the plate, reduce the springback amount, make the final formed angle more stable and accurate; and the two-time bending forming can make the plate more compact at the bending part, reduce the internal gap and stress concentration point, help to improve the structural strength and stability of the bending part, and more accurately control the bending position and angle, reduce the material waste caused by forming error.

[0037] The output end of the speed-reducing self-locking motor 24 is fixedly connected with a driving gear 23, the outer side of the driving gear 23 is engaged with a driven gear 21, the middle part of the driven gear 21 is fixedly connected with a driving shaft 18 for transmission, the two driving shafts 18 are respectively fixedly connected with the bending block 5 and the lower pressing block 4, the front ends of the moving seat 2 and the supporting seat 1 are both provided with an embedded groove 28 for storing the speed-reducing self-locking motor 24, and the driven gear 21 and the driving gear 23 are both located in the embedded groove 28;

[0038] In work, through the deceleration self-locking motor 24 drives the driving gear 23 to rotate, and then drives the driven gear 21 and the driving shaft 18 to rotate, so that the bending block 5 and the lower pressing block 4 can change the angle, through the gear transmission, the position of the deceleration self-locking motor 24 can be changed, so that the deceleration self-locking motor 24 can be placed more reasonably; at the same time, the diameter of the driving gear 23 is smaller than that of the driven gear 21, the force transmission is the lifting process, and the driven gear 21 can be stably driven; when self-locking, the reverse transmission is a laborious lever, which can stably lock the driving shaft 18.

[0039] The front end of the support base 1 is provided with a plurality of parallelly arranged recycling grooves, and the movable support plates 10 are slidably connected in the recycling grooves.

[0040] In work, when the lower pressing block 4 changes the angle, the movable support plates 10 are controlled to extend outward to form a horizontal support surface, and the upper pressing block 3 and the lower pressing block 4 cooperate to fix the plate to be bent 6, so as to ensure the stability of the plate to be bent 6 in the extrusion process and make the bending work smoothly.

[0041] The bottom of the movable support plate 10 is provided with a plurality of clamping tooth grooves, the end of the recycling groove is provided with an electric gear near the bottom, the electric gear is fixedly connected with the movable support plate 10 through the clamping tooth groove, and the bottom of the outside of the recycling groove is provided with a laser sensor.

[0042] In work, as the rotation angle of the lower pressing block 4 increases, the amount of leakage of the recycling groove increases, the rotation angle data of the laser sensor and the deceleration self-locking motor 24 are determined, a corresponding number of movable support plates 10 are controlled to extend outward, and the movable support plates 10 in the blocked recycling groove remain in the recycling state, so as to ensure that the support for the plate to be bent 6 can increase with the increase of the rotation angle of the lower pressing block 4, and the support stability is maintained; the movable support plates 10 are driven to extend and retract through the rotation engagement of the electric gear.

[0043] The bottom plate 7 is fixedly connected to the bottom of the support base 1, a plurality of horizontally arranged hydraulic rods II 14 are fixedly connected to one side of the support base 1, the bottom sliding table 8 is fixedly connected between the ends of the plurality of hydraulic rods II 14, a plurality of vertically arranged hydraulic rods I 9 are fixedly connected to the top of the bottom sliding table 8, the top of the plurality of hydraulic rods I 9 is fixedly connected with the moving base 2, the power groove 15 is formed in the top of the front end of the support base 1, the hydraulic elevator 17 is slidably connected in the power groove 15, the lifting end of the hydraulic elevator 17 is fixedly connected with the upper pressing block 3, and a plurality of horizontally arranged hydraulic rods III 16 are installed in the power groove 15 for controlling the horizontal movement of the hydraulic elevator 17.

[0044] When working, the horizontal movement of the bottom slide 8 is controlled by the extension and shortening of the hydraulic rod two 14, and the lifting of the moving seat 2 is controlled by the extension and shortening of the hydraulic rod one 9, so that the moving seat 2 can be moved arbitrarily in the vertical plane, and the right upper notch of the support seat 1 is also provided for the smooth movement of the moving seat 2; the hydraulic rod three 16 controls the horizontal movement of the hydraulic elevator 17, and the hydraulic elevator 17 controls the lifting of the upper pressing block 3, so as to realize the free movement of the upper pressing block 3 in the vertical plane, so as to adapt to the clamping and pressing of different plates 6 and the adjustment work when the angle of the lower pressing block 4 changes.

[0045] The bottom of the moving seat 2 is provided with a sliding groove 19, the sleeve 20 is slidably connected in the sliding groove 19, the sliding rod 12 is slidably connected in the sleeve 20, the sliding rod 12 is fixedly connected with the support seat 1, the end of the bottom plate 7 is fixedly connected with a vertical baffle, and the end of the pressing block 5 close to the upper pressing block 3 is fixedly connected with a vertical extension plate 13.

[0046] When working, the sleeve 20 can slide horizontally in the sliding groove 19, and the sliding rod 12 can slide up and down in the sleeve 20, so as to stabilize the movement stability of the left side of the moving seat 2; the baffle at the end of the bottom plate 7 is the farthest distance that the bottom slide 8 can slide, which is due to the warning and protection effect; the extension plate 13 is detachable, which can increase the extrusion length of the left side of the pressing block 5.

[0047] The rear end of the lower pressing block 4 and the pressing block 5 is fixedly connected with an electric telescopic rod 25, the front end of the moving seat 2 and the support seat 1 is provided with a binding groove 11 matched with the electric telescopic rod 25, and the binding groove 11 is arranged in an arc shape.

[0048] When working, the electric telescopic rod 25 is slidably connected in the arc-shaped binding groove 11, and with the rotation of the moving seat 2 or the lower pressing block 4, the shell part of the electric telescopic rod 25 is always connected in the binding groove 11, when the angle adjustment is completed, the electric telescopic rod 25 is extended and abuts against the bottom of the binding groove 11, so as to form a reaction force on the driving shaft 18, thereby fixing the moving seat 2 or the lower pressing block 4, cooperating with the self-locking fixation of the reduction self-locking motor 24, and ensuring the stability of the moving seat 2 or the lower pressing block 4 after the angle adjustment.

[0049] The locking table 29 is slidably connected in the binding groove 11, the shell part of the electric telescopic rod 25 is fixedly connected with the locking table 29, and the electromagnet module 30 is fixedly connected in the locking table 29.

[0050] When the mobile seat 2 or the lower pressing block 4 is adjusted to the angle, the electromagnetic module 30 is started to generate magnetic force, the locking table 29 is adsorbed to the inner wall of the restraint groove 11, and the fixing is completed, and the locking table 29 is slidably clamped in the restraint groove 11; when the electric telescopic rod 25 is elongated, the reaction force is directly applied between the locking table 29 and the restraint groove 11, and the mobile seat 2 or the lower pressing block 4 which is rotated to the position is effectively fixed, and the subsequent extrusion process is smoothly assisted.

[0051] The inner wall of the restraint groove 11 is provided with two power supply clamping grooves 27, the mobile seat 2 and the support seat 1 are internally provided with power supply modules, and the electromagnetic module 30 in the locking table 29 is in power supply connection with the power supply modules through the power supply clamping grooves 27; in operation, the locking table 29 can be continuously powered with the power supply modules no matter where it moves.

[0052] The rear end of the driving shaft 18 is fixedly connected with a chuck 22, the chuck 22 is rotationally clamped in the embedded groove 28, and the inner wall of the restraint groove 11 is fixedly connected with a plurality of uniformly distributed friction strips 26;

[0053] In operation, the chuck 22 improves the connection stability of the driving shaft 18 and the mobile seat 2 or the support seat 1, the friction strips 26 can increase the friction between the end of the electric telescopic rod 25 and the restraint groove 11 and between the locking table 29 and the restraint groove 11, and the locking stability of the mobile seat 2 or the lower pressing block 4 is further ensured.

[0054] In operation, the plate to be bent 6 is placed between the upper pressing block 3 and the lower pressing block 4, the plate to be bent 6 is fixed through the movement of the upper pressing block 3, then the mobile seat 2 is controlled to sink, and the plate to be bent 6 is bent by 90 degrees by the bending block 5; when the plate to be bent 6 needs to be bent to an angle smaller than 90 degrees, the lower pressing block 4 is first rotated by the speed reduction self-locking motor 24, the lower pressing block 4 rotates around the right upper corner as the rotation shaft, the lower pressing block 4 is locked after being rotated to the required angle, and the upper pressing block 3 also appropriately adjusts the position thereof to ensure that the plate to be bent 6 can be fixed together with the lower pressing block 4, at this time, the right side of the lower pressing block 4 is obliquely arranged and the included angle with the horizontal plane is the same as the angle of the plate to be bent 6; in the bending process, the bending block 5 can be kept in the shape, the mobile seat 2 and the bending block 5 are first moved away from the upper pressing block 3, then the mobile seat 2 drives the bending block 5 to press downward for the first time, the end of the plate to be bent 6 is pressed downward, then the mobile seat 2 and the bending block 5 are raised, the speed reduction self-locking motor 24 is used to control the bending block 5 to rotate, the bending block 5 is counterclockwise rotated to the same angle as the lower pressing block 4 and is locked, then the mobile seat 2 controls the bending block 5 to press downward for the second time until the plate to be bent 6 is completely attached to the lower pressing block 4, and the plate to be bent 6 is bent to the required angle.

[0055] Through such a setting, not only can the device bend the to-be-bent plate 6 to the required radian, but also can bend the plate through secondary pressing when bending at a non-right angle; because when bending at a right angle, the pressing block 5 is vertically pressed, the overall plate is uniformly stressed, and the pressing block 4 continuously applies pressure to the to-be-bent plate 6 in the process of continuous sinking, which can ensure the bending quality and reduce the plate springback; the secondary pressing method at a non-right angle can not only disperse the original required extrusion force to the two sides in the extrusion process, reduce the pressure bearing of the pressing block 5 and the pressing block 4, but also through twice pressing forming, the first pressing can bend the plate to the final angle, and the second pressing can further compact the plate, reduce the springback amount, make the final forming angle more stable and accurate; and twice pressing forming can make the plate more compact at the bending part, reduce the internal gap and stress concentration point, help to improve the structural strength and stability of the bending part, and more accurately control the bending position and angle, reduce the material waste caused by forming error.

[0056] The main gear 23 is driven to rotate by the speed-reducing self-locking motor 24, and then the driven gear 21 and the driving shaft 18 are driven to rotate, so that the pressing block 5 and the pressing block 4 can change their own angles. By setting the gear transmission, the position of the speed-reducing self-locking motor 24 can be changed, which is convenient for more reasonable placement of the speed-reducing self-locking motor 24.

[0057] When the pressing block 4 changes its own angle, the multiple moving support plates 10 are controlled to extend outward to form a horizontal support surface, and the upper pressing block 3 and the pressing block 4 cooperate to extrude and fix the to-be-bent plate 6, so as to ensure the stability of the to-be-bent plate 6 in the extrusion process and make the bending work proceed smoothly.

[0058] As the rotation angle of the pressing block 4 increases, the amount of leakage of the recovery groove will be more. Through the double determination of the rotation angle data of the laser sensor and the speed-reducing self-locking motor 24, a corresponding number of moving support plates 10 are controlled to extend outward, while the moving support plates 10 in the blocked recovery groove still maintain the recovery state, so as to ensure that the support to the to-be-bent plate 6 can increase with the increase of the rotation angle of the pressing block 4, and the support stability is maintained; the moving support plates 10 are driven to complete the extension and retraction work through the rotation of the electric gear.

[0059] The horizontal movement of the bottom sliding table 8 is controlled by the extension and shortening of the hydraulic rod two 14, and the lifting of the moving seat 2 is controlled by the extension and shortening of the hydraulic rod one 9, so as to control the arbitrary movement of the moving seat 2 on the vertical plane, and the right upper notch of the support seat 1 is also for the smooth movement of the moving seat 2; the hydraulic rod three 16 controls the horizontal movement of the hydraulic elevator 17, and the hydraulic elevator 17 controls the lifting of the upper pressing block 3, so as to realize the free movement process of the upper pressing block 3 on the vertical plane, to adapt to the clamping of different to-be-bent plates 6 and the adjustment work when the angle of the pressing block 4 changes.

[0060] The sleeve 20 can slide horizontally in the sliding groove 19, and the slide rod 12 can slide up and down in the sleeve 20, so as to stabilize the moving stability of the left side of the moving base 2; the baffle at the end of the bottom plate 7 is the farthest distance that the bottom sliding table 8 can slide, and is used for warning and protection; the extension plate 13 is detachable, and can increase the extrusion length of the left side of the press-bending block 5.

[0061] The electric telescopic rod 25 is slidably clamped in the arc-shaped restraint groove 11, and with the rotation of the moving base 2 or the pressing block 4, the shell part of the electric telescopic rod 25 is always clamped in the restraint groove 11, when the angle adjustment is completed, the electric telescopic rod 25 is elongated and abuts against the bottom of the restraint groove 11, so as to form a counterforce to the driving shaft 18, thereby fixing the moving base 2 or the pressing block 4, and cooperating with the self-locking fixing of the reduction self-locking motor 24, so as to ensure the stability of the moving base 2 or the pressing block 4 after the angle adjustment.

[0062] When the angle adjustment of the moving base 2 or the pressing block 4 is completed, the electromagnet module 30 is started to generate a magnetic force to adsorb the locking table 29 and the inner wall of the restraint groove 11, so as to complete the fixing, and at the same time, the locking table 29 is slidably clamped in the restraint groove 11, when the electric telescopic rod 25 is elongated, the counterforce generated will directly act between the locking table 29 and the restraint groove 11, thereby effectively fixing the moving base 2 or the pressing block 4 which is rotated in place, and assisting the smooth progress of the subsequent extrusion process.

[0063] The chuck 22 is arranged to improve the connection stability of the driving shaft 18 and the moving base 2 or the support base 1, and the friction strip 26 can increase the friction force between the end of the electric telescopic rod 25 and the restraint groove 11, and between the locking table 29 and the restraint groove 11, so as to further ensure the locking stability of the moving base 2 or the pressing block 4.

[0064] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application 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 support includes 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 plate to be bent. One end of the support base has a notch, 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. The rear ends of the bending block and the lower pressure block are provided with a reduction self-locking motor for controlling the rotation of the bending block and the lower pressure block. The output end of the deceleration self-locking motor is fixedly connected to a drive gear, and a driven gear meshes with the outer side of the drive gear. 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. The driven gear and the drive gear are both located in the embedded grooves. 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 upper pressure block, and the multiple movable support plates are arranged horizontally at equal intervals. 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.

2. The automatic bending machine for metal sheets with adjustable bending radius according to claim 1, 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.

3. The automatic bending machine for metal sheets with adjustable bending radius according to claim 2, 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.

4. The automatic bending machine for metal sheets with adjustable bending radius according to claim 3, 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.

5. The automatic metal sheet bending machine with adjustable bending radius according to claim 4, 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.

6. The automatic bending machine for metal sheets with adjustable bending radius according to claim 5, 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.

7. An automatic metal sheet bending machine with adjustable bending radius according to claim 6, 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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