A bending machine capable of quickly adjusting a bending angle

Abstract

The utility model relates to the technical field of bending machine, especially a bending machine of quick adjustable bending angle, including bending base, the central position rotation of bending base is connected with bending lower mould, both ends of bending lower mould all are provided with pivot rod, and the outer end surface of one pivot rod is provided with the connecting frame in the outer end surface of one pivot rod in the connecting frame is provided with the rotating motor, the utility model discloses through the rotating motor drive bending lower mould rotates, and cooperates four preset angle's bending groove, realizes the quick switching of different bending angle, and the efficiency of die changing is improved significantly, reduces manual adjustment time, and when bending lower mould rotates to the appropriate angle, and the limiting assembly is driven two limit blocks synchronous card into the limiting slot of pivot rod through servo motor drive double -end screw rod, realizes rigid locking, effectively prevents the rotation or deviation of lower mould in the bending process because of stress, guarantees the processing safety and quality.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a bending machine with a rapidly adjustable bending angle. Background Technology

[0002] A bending machine is a machine that can bend thin plates. It is very common in the processing of hardware components. Its structure mainly includes a support, a worktable and a clamping plate. The worktable consists of a base and a pressure plate. The base is connected to the clamping plate through a hinge. During the processing of metal sheets, it can bend the sheets into different angles.

[0003] For example, patent number CN218049812U discloses a multi-angle bending machine for speaker housings. When bending sheet metal at a 90-degree angle according to production and processing needs, the positions of slot A and slot B are adjusted so that slot A faces upward. After adjustment, the pad is moved between the square column and the worktable to fix the square column. The sheet metal to be bent is placed on the top of the square column, and the pressing mechanism is operated so that the pressing mechanism cooperates with slot A to bend the sheet metal at a 90-degree angle. When it is necessary to perform an acute-angle bend and flatten the bent sheet metal, the square column is rotated by the pivot so that slot B faces upward. This reduces the time for intermediate replacements and improves processing efficiency.

[0004] For example, patent number CN221675392U discloses a bending device with an adjustable bending angle. Through the cooperation of a bracket, support plate, motor, rotating rod and bending die, the user drives the rotating rod to rotate through the motor, which in turn rotates the bending die. With the bending slots of different angles opened on it, it can adapt to the bending requirements of different materials and workpieces, making it convenient for the user to perform bending processing at different degrees, thus enhancing the adaptability of the device.

[0005] The aforementioned patents all use a rotary motor in conjunction with a transmission rod to drive the bending die of the bending machine to rotate, thereby switching the bending angle of the bending die. However, in existing bending dies, the rotary motor lacks a locking mechanism when switching, which can easily cause the lower die to rotate or shift due to force during the bending process, affecting the quality of the bending process. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a bending machine with a rapidly adjustable bending angle. This solves the problem that when switching bending dies, the rotary motor lacks a locking mechanism, which can easily cause the lower die to rotate or shift due to force during the bending process, thus affecting the bending quality.

[0007] The technical solution of this utility model is as follows: a bending machine with a quickly adjustable bending angle, including a bending base, a bending lower die rotatably connected to the center of the bending base, and a rotating shaft at both ends of the bending lower die. One end of the rotating shaft is connected to a connecting frame on the outer end face of the bending base. A rotary motor is connected to the outer end face of one of the rotating shafts on the connecting frame. The rotary motor is used to cooperate with the rotating shaft to drive the bending lower die to rotate inside the connecting frame. A limit component is provided at the bottom end of the other rotating shaft on the other connecting frame. The limit component is used to connect the other rotating shaft to the other connecting frame. The limit component includes a limit seat. A servo motor is fixedly connected to the bottom end of the limit seat. A transmission rod is fixedly connected to the output end of the servo motor inside the limit seat. A lead screw A is rotatably connected to the top end of the transmission rod. Limit blocks are threaded to both ends of the lead screw A. The two ends of the lead screw A extend to the outside of the limit blocks and are rotatably connected to the limit seat. When the servo motor drives the transmission rod to rotate, the transmission rod cooperates with the lead screw A to drive the two limit blocks to move on the top surface of the limit seat.

[0008] Preferably, a support frame is fixedly connected to the top of the bending base, and a pneumatic component is fixedly connected to the top of the support frame. The pneumatic component includes a cylinder, and a rod is connected to the output end of the cylinder. A bending upper die is provided below the rod on the inner side of the bending base. The bottom end of the rod passes through the bending base and is fixedly connected to the bending upper die. When the cylinder drives the rod to move, the rod drives the bending upper die to move inside the support frame.

[0009] Preferably, the two ends of the bending upper die are provided with guide grooves on the inner wall of the support frame. When the bending upper die moves, it is displaced inside the guide groove. A buffer assembly is provided at the bottom of the inner wall of the guide groove. The buffer assembly includes a pressure sensor, a damping rod, and a buffer spring. The top end of the damping rod extends to the bottom end of the bending upper die. The buffer assembly is used for buffering between the support frame and the bending upper die. The pressure sensor is set between the damping rod and the bending upper die to monitor the impact force during the bending process in real time and feed the signal back to the control panel. When the impact force exceeds the set threshold, the control panel automatically reduces the output pressure of the cylinder or stops the operation to protect the die and the workpiece.

[0010] Preferably, a control panel is fixedly connected to one side of the top of the bending base. The control panel is electrically connected to the pneumatic components, the rotary motor, and the servo motor. When the device is started, the pneumatic components, the rotary motor, and the servo motor can be controlled through the control panel.

[0011] Preferably, the bending die and the rotating shaft are integrated into one structure. The four ends of the outer surface of the bending die are provided with bending grooves at different angles, and the four bending grooves can be switched by rotating the bending die.

[0012] Preferably, a bevel gear is provided at one end of the transmission rod and at the center of the lead screw A. When the transmission rod rotates, the transmission rod, in conjunction with the bevel gear, drives the lead screw A to rotate. The lead screw A is a double-threaded lead screw, and the threads at both ends of the lead screw A are symmetrical to each other. When the lead screw A rotates, the lead screw A drives the two limit blocks to move relative to each other.

[0013] Preferably, a limiting groove is provided on the outer side of the rotating shaft rod, and one end of the limiting block is consistent with the shape of the limiting groove. When the two limiting blocks are relatively displaced, one end of the transmission rod is inserted into the inner side of the limiting groove.

[0014] The beneficial effects of this utility model are:

[0015] This bending machine, which can quickly adjust the bending angle, drives the lower bending die to rotate via a rotary motor. With four preset bending slots, it can quickly switch between different bending angles, significantly improving die-changing efficiency and reducing manual adjustment time. When the lower bending die rotates to the appropriate angle, the limiting component drives a double-headed lead screw via a servo motor to simultaneously engage two limiting blocks into the limiting slots of the rotating shaft, achieving rigid locking. This effectively prevents the lower die from rotating or shifting due to force during bending, ensuring processing safety and quality. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural representation of this utility model. Figure 1 ;

[0017] Figure 2 The diagram shown is a three-dimensional structural representation of this utility model. Figure 2 ;

[0018] Figure 3 The diagram shown is a structural schematic of the limiting seat of this utility model;

[0019] Figure 4 The diagram shown is a structural schematic of the bending lower die of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Bending base; 2. Control panel; 3. Support frame; 4. Cylinder; 5. Air rod; 6. Upper bending die; 7. Lower bending die; 8. Bending groove; 9. Rotary motor; 10. Rotating shaft; 11. Limit seat; 12. Servo motor; 13. Limit groove; 14. Transmission rod; 15. Lead screw A; 16. Limit block; 17. Bevel gear; 18. Connecting frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides an embodiment of a bending machine with a rapidly adjustable bending angle, comprising a bending base 1, a lower bending die 7 rotatably connected to the center of the bending base 1, and a rotating shaft 10 at both ends of the lower bending die 7. One end of the rotating shaft 10 is connected to a connecting frame 18 on the outer end face of the bending base 1. A rotary motor 9 is located on the outer end face of one of the rotating shafts 10 and connected to the connecting frame 18. The rotary motor 9 is used to cooperate with the rotating shaft 10 to drive the lower bending die 7 to rotate inside the connecting frame 18. A limit component is located at the bottom end of the other rotating shaft 10 and connected to the other connecting frame 18. The limit component is used to... One of the rotating shafts 10 is connected to another connecting frame 18; the limiting assembly includes a limiting seat 11, a servo motor 12 is fixedly connected to the bottom end of the limiting seat 11, a transmission rod 14 is fixedly connected to the output end of the servo motor 12 inside the limiting seat 11, a lead screw A15 is rotatably connected to the top end of the transmission rod 14, and both ends of the lead screw A15 are threadedly connected to limiting blocks 16. Both ends of the lead screw A15 extend to the outside of the limiting blocks 16 and are rotatably connected to the limiting seat 11. When the servo motor 12 drives the transmission rod 14 to rotate, the transmission rod 14, in conjunction with the lead screw A15, drives the two limiting blocks 16 to move on the top surface of the limiting seat 11.

[0023] Please see Figures 1-2In this embodiment, a support frame 3 is fixedly connected to the top of the bending base 1, and a pneumatic assembly is fixedly connected to the top of the support frame 3. The pneumatic assembly includes a cylinder 4, and a rod 5 is connected to the output end of the cylinder 4. A bending upper die 6 is provided below the rod 5 on the inner side of the bending base 1. The bottom end of the rod 5 passes through the bending base 1 and is fixedly connected to the bending upper die 6. When the cylinder 4 drives the rod 5 to move, the rod 5 drives the bending upper die 6 to move inside the support frame 3. Guide grooves are provided at both ends of the bending upper die 6 on the inner wall of the support frame 3. When the bending upper die 6 moves... The bending upper die 6 moves inside the guide groove. A buffer assembly is provided at the bottom of the inner wall of the guide groove. The buffer assembly includes a pressure sensor, a damping rod, and a buffer spring. The top of the damping rod extends to the bottom of the bending upper die 6. The buffer assembly is used to buffer between the support frame 3 and the bending upper die 6. The pressure sensor is set between the damping rod and the bending upper die 6 to monitor the impact force during the bending process in real time and feed the signal back to the control panel 2. When the impact force exceeds the set threshold, the control panel 2 automatically reduces the output pressure of the cylinder 4 or stops the operation to protect the die and the workpiece.

[0024] Please see Figures 3-4In this embodiment, a control panel 2 is fixedly connected to one side of the top of the bending base 1. The control panel 2 is electrically connected to the pneumatic components, the rotary motor 9, and the servo motor 12. The rotary motor 9 and the servo motor 12 are both self-locking motors (according to CN120320523A, a self-locking motor includes a housing, stator magnets, a rotor, and a motor shaft; multiple corner sections are provided in the polygonal cavity, with each corner section facing the other; stator magnets are installed in the corner sections one by one; and the arc-shaped surfaces of each stator magnet form an installation area to accommodate the rotor, optimizing the magnetic field distribution). Furthermore, grooves are formed on the arc-shaped surface of the stator magnet, dividing it into several stator poles. This breaks the magnetic reluctance of the air gap magnetic field, creating a discontinuous magnetic field and increasing the logarithm of the reluctance, thus increasing the magnetic flux density of the rotor. The grooves on each stator magnet are positioned identically to form a symmetrical stator pole layout, improving the symmetry of the air gap magnetic field. This results in greater cogging torque, enhancing the motor's mechanical performance and self-locking capabilities. Compared to motors with a screw and nut drive structure, this design exhibits lower wear and a smaller size, allowing for adaptation to compact designs. When the device is started, the pneumatic components, rotary motor 9, and servo motor 12 can be controlled via the control panel 2. The lower bending die 7 and the rotating shaft 10 are an integral structure. The four ends of the outer surface of the lower bending die 7 are provided with bending grooves 8 at different angles (the four bending grooves 8 correspond to bending angles of 30°, 45°, 60°, and 90° respectively, and the center line of each bending groove 8 is aligned with the rotation center of the lower bending die 7 to ensure that the upper bending die 6 is precisely aligned with the current bending groove 8 after switching). The four bending grooves 8 can be switched by rotating the lower bending die 7. The transmission rod 1 A bevel gear 17 is provided at one end of the transmission rod 14 and at the center of the lead screw A15. When the transmission rod 14 rotates, the transmission rod 14, in conjunction with the bevel gear 17, drives the lead screw A15 to rotate. The lead screw A15 is a double-threaded lead screw, and the threads at both ends of the lead screw A15 are symmetrical to each other. When the lead screw A15 rotates, the lead screw A15 drives the two limiting blocks 16 to move relative to each other. A limiting groove 13 is opened on the outer side of the rotating shaft rod 10. One end of the limiting block 16 is consistent with the shape of the limiting groove 13. When the two limiting blocks 16 move relative to each other, one end of the transmission rod 14 is inserted into the inner side of the limiting groove 13.

[0025] During operation, the device is placed in a suitable position, the power is turned on, and the device is started. The control panel 2 controls the rotary motor 9, which, in conjunction with the rotating shaft 10, drives the lower bending die 7 to rotate inside the connecting frame 18. The lower bending die 7 has four bending grooves 8 at different angles on its outer surface. These four grooves correspond to bending angles of 30°, 45°, 60°, and 90°, respectively. The centerline of each bending groove 8 is aligned with the rotation center of the lower bending die 7, ensuring precise alignment of the upper bending die 6 with the current bending groove 8 after switching. A limit component is located on the outer side of the connecting frame 18 at the other end of the rotating shaft 10. When the rotating shaft 10 rotates to the appropriate angle, the device is controlled... Panel 2 starts the servo motor 12, which, together with the transmission rod 14, drives the lead screw A15 to rotate. The two ends of the lead screw A15 are threadedly connected to limit blocks 16. The outer side of the rotating shaft 10 has a limit groove 13. One end of the limit block 16 is consistent with the shape of the limit groove 13. When the two limit blocks 16 move relative to each other, one end of the transmission rod 14 is inserted into the inner side of the limit groove 13, thereby locking the rotating shaft 10 onto the connecting frame 18 to prevent the lower bending die 7 from deflecting during the bending process. Then, the plate to be bent is pushed into the inner side of the bending base 1. The cylinder 4 is started through the control panel 2. The cylinder 4, together with the air rod 5, drives the upper bending die 6 to bend the plate.

[0026] Compared to the prior art document CN218049812U, a multi-angle bending machine for speaker housings, when bending sheet metal at 90 degrees according to production and processing needs, adjusts the positions of slot A and slot B so that slot A faces upwards. After adjustment, the pad is moved between the square column and the worktable to fix the square column. The sheet metal to be bent is placed on the top of the square column, and the pressing mechanism is operated so that the pressing mechanism cooperates with slot A to bend the sheet metal at 90 degrees. When it is necessary to perform an acute angle bend and flatten the bent sheet metal, the square column is rotated by the pivot so that slot B faces upwards. This reduces the time for intermediate replacements and improves processing efficiency.

[0027] CN221675392U describes an adjustable bending device. Through the coordinated use of a bracket, support plate, motor, rotating rod, and bending die, the user rotates the rotating rod by the motor, causing the bending die to rotate. With the bending slots of different angles on the die, it can adapt to the bending requirements of different materials and workpieces, making it easier for the user to perform bending processing to different degrees, thus enhancing the adaptability of the device.

[0028] This application uses a rotary motor to drive the lower bending die to rotate, and with four preset bending slots, it can quickly switch between different bending angles, significantly improving die changing efficiency and reducing manual adjustment time. When the lower bending die rotates to the appropriate angle, the limiting component drives a double-headed lead screw through a servo motor to drive two limiting blocks to synchronously engage with the limiting slots of the rotating shaft, achieving rigid locking and effectively preventing the lower die from rotating or shifting due to force during bending, thus ensuring processing safety and quality.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending machine with a rapidly adjustable bending angle, comprising a bending base (1), characterized in that: A bending lower die (7) is rotatably connected to the center of the bending base (1). Both ends of the bending lower die (7) are provided with a rotating shaft (10). One end of the rotating shaft (10) is provided with a connecting frame (18) on the outer end face of the bending base (1). A rotary motor (9) is provided on the outer end face of one of the rotating shafts (10) and the rotary motor (9) is used to cooperate with the rotating shaft (10) to drive the bending lower die (7) to rotate inside the connecting frame (18). A limit component is provided at the bottom end of the other rotating shaft (10) and the limit component is used to connect the other rotating shaft (10) with the other connecting frame (18). The limiting assembly includes a limiting seat (11), a servo motor (12) is fixedly connected to the bottom of the limiting seat (11), the output end of the servo motor (12) is fixedly connected to a transmission rod (14) on the inner side of the limiting seat (11), a lead screw A (15) is rotatably connected to the top of the transmission rod (14), both ends of the lead screw A (15) are threadedly connected to limiting blocks (16), both ends of the lead screw A (15) extend to the outer side of the limiting blocks (16) and are rotatably connected to the limiting seat (11). When the servo motor (12) drives the transmission rod (14) to rotate, the transmission rod (14) cooperates with the lead screw A (15) to drive the two limiting blocks (16) to move on the top surface of the limiting seat (11).

2. A bending machine with a rapidly adjustable bending angle according to claim 1, characterized in that: A support frame (3) is fixedly connected to the top of the bending base (1). A pneumatic component is fixedly connected to the top of the support frame (3). The pneumatic component includes a cylinder (4). A rod (5) is connected to the output end of the cylinder (4). A bending upper die (6) is provided below the rod (5) on the inner side of the bending base (1). The bottom end of the rod (5) passes through the bending base (1) and is fixedly connected to the bending upper die (6). When the cylinder (4) drives the rod (5) to move, the rod (5) drives the bending upper die (6) to move on the inner side of the support frame (3).

3. A bending machine with a rapidly adjustable bending angle according to claim 1, characterized in that: The two ends of the bending upper die (6) are provided with guide grooves on the inner wall of the support frame (3). When the bending upper die (6) moves, the bending upper die (6) is displaced inside the guide groove. A buffer assembly is provided at the bottom of the inner wall of the guide groove. The buffer assembly includes a pressure sensor, a damping rod and a buffer spring. The top of the damping rod extends to the bottom of the bending upper die (6). The buffer assembly is used for buffering between the support frame (3) and the bending upper die (6). The pressure sensor is set between the damping rod and the bending upper die (6) to monitor the impact force during the bending process in real time and feed the signal back to the control panel (2). When the impact force exceeds the set threshold, the control panel (2) automatically reduces the output pressure of the cylinder (4) or stops the operation to protect the die and the workpiece.

4. A bending machine with a rapidly adjustable bending angle according to claim 1, characterized in that: A control panel (2) is fixedly connected to one side of the top of the bending base (1). The control panel (2) is electrically connected to the pneumatic components, the rotary motor (9), and the servo motor (12). When the device is started, the pneumatic components, the rotary motor (9), and the servo motor (12) can be controlled through the control panel (2).

5. A bending machine with a rapidly adjustable bending angle according to claim 1, characterized in that: The bending die (7) and the rotating shaft (10) are integrated into one structure. The four ends of the outer surface of the bending die (7) are provided with bending grooves (8) at different angles. The four bending grooves (8) can be switched by rotating the bending die (7).

6. A bending machine with a rapidly adjustable bending angle according to claim 1, characterized in that: A bevel gear (17) is provided at one end of the transmission rod (14) and at the center of the lead screw A (15). When the transmission rod (14) rotates, the transmission rod (14) and the bevel gear (17) drive the lead screw A (15) to rotate. The lead screw A (15) is a double-threaded lead screw. The threads at both ends of the lead screw A (15) are symmetrical to each other. When the lead screw A (15) rotates, the lead screw A (15) drives the two limit blocks (16) to move relative to each other.

7. A bending machine with a rapidly adjustable bending angle according to claim 1, characterized in that: A limiting groove (13) is provided on the outer side of the rotating shaft (10). One end of the limiting block (16) is consistent with the shape of the limiting groove (13). When the two limiting blocks (16) are relatively displaced, one end of the transmission rod (14) is inserted into the inner side of the limiting groove (13).

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