A wire bending machine

Abstract

The present invention belongs to the technical field of bending tools, and discloses a wire bending machine, including a base, a workbench, and the front of the workbench is fixedly installed with a mounting column, a motor, a feeding mechanism and a storage tank in sequence from left to right. A telescopic rod is installed on the right side of the storage tank, and multiple groups of materials are placed longitudinally inside the storage tank. One end of the mounting column is fixedly connected with a fixed disk. The device drives the rotation, and after the bending operation is completed on the material, it automatically shrinks, so as not to affect the discharge of the material. The left end of the material being fed is abutted by the limiting mechanism to complete the positioning. Due to the opening of the card slot, the material distributed in a straight line is just intercepted by the limit. After the material is bent, the outer part of the material bending is just abutted with the limit block, and the inclined surface of the limit block is used to push the limit block backward after the material is discharged, so as to realize the functions of fixing the feeding and giving way to the unloading, and greatly improve the loading and unloading functions of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of bending tools, in particular to a wire bending machine. Background Art

[0002] Steel wire is one of the four major categories of steel, including plates, tubes, profiles and wires. It is a reprocessed wire product made by cold drawing hot-rolled wire rods. It is usually bent into a coil during transportation. During processing, it is straightened and the ends are bent to meet the needs of different mechanical processing fields. Therefore, a wire bending machine is needed to bend the steel wire. In the prior art, a wire bending machine needs to bend a large number of steel wires in batches. It generally uses a rotating disc structure to drive the cylindrical structure on its surface. A cylinder rotating around the axis of rotation is also provided in the middle of the disc. During rotation, two sets of positions are used to bend the steel wire. Different cylindrical structures are used to bend the steel wire. In the prior art, after the steel wire is bent, a cylinder and connecting parts are generally used to push the steel wire forward from the work station along the axial direction of the bending mechanism to make it leave the work station and complete the steel wire unloading operation. However, the connection between unloading and loading in this design is very inefficient. The clamping parts used to clamp the steel wire need to be opened synchronously to avoid hindering the unloading of the steel wire. This results in the need to readjust the states of the bending, fixing and other modules during loading. The bending machine as a whole needs more time to adjust before it can enter the next bending progress. Therefore, improvement is urgently needed. Summary of the invention

[0003] The object of the present invention is to provide a wire bending machine to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wire bending machine, comprising a base and a workbench, the front of the workbench is fixedly installed with a mounting column, a motor, a feeding mechanism and a storage trough in sequence from left to right, a telescopic rod is installed on the right side of the storage trough, and multiple groups of materials are placed longitudinally inside the storage trough, one end of the mounting column is fixedly connected with a fixed disk, the output shaft of the motor is fixedly connected with a turntable, a limiting column is fixedly installed on the front of the turntable, and a movable column is movably sleeved, the movable column abuts against the inner wall of the turntable, and a spring three is elastically installed, one end of the movable column is fixedly connected with a permanent magnet block, a permanent magnet plate is fixedly installed on the lower right side of the front of the fixed disk, and a limiting mechanism is installed on the front of the fixed disk;

[0005] The limiting mechanism includes a fixed cylinder fixedly installed on the left side of the front face of the fixed plate, a spring and a telescopic column are movably sleeved inside the fixed cylinder, one end of the telescopic column is fixedly connected to a connecting seat, a limiting block is fixedly installed on the front face of the connecting seat, a slot is provided on the front face of the limiting block, and the material is driven by the feeding mechanism to pass to the left between the limiting column and the movable column and fits into the slot.

[0006] As a preferred solution of the present invention, the output shaft of the motor is fixedly mounted with a connecting plate located at the rear side of the fixed disk, the front side of the connecting plate is fixedly connected with an abutment plate, and the front side of the workbench is mounted with a clamping mechanism located between the turntable and the feeding mechanism;

[0007] The clamping mechanism includes a fixed frame fixedly installed on the front side of the workbench, a plurality of guide columns are fixedly installed on the inner wall of the fixed frame, two upper and lower groups of clamping blocks and spring 2 are slidably installed on the outer surface of the guide column, and spring 2 is elastically installed between the clamping block and the inner wall of the fixed frame, the opposite surfaces of the two groups of clamping blocks are provided with fixed grooves, the clamping block is fixedly installed with a hinged frame on one side facing the inner wall of the fixed frame, the upper and lower groups of hinged frames are movably hinged with hinged plates inside, and a limit plate is hinged through the hinged plate, and the material adapter passes through the fixed groove and the limit plate.

[0008] As a preferred solution of the present invention, a through hole is opened in the middle of the limiting plate, the size of the through hole is adapted to the material, and the axial position of the through hole remains unchanged.

[0009] As a preferred solution of the present invention, the top-view cross-sectional shape of the limit block is a right-angled triangle, the inclined surface of the limit block faces rightward, and the contact surface between the slot and the material remains flush vertically.

[0010] As a preferred solution of the present invention, two ends of the spring one are elastically connected to the telescopic column and the fixed cylinder respectively, and the telescopic column is elastically supported inside the fixed cylinder by the spring one.

[0011] As a preferred solution of the present invention, the mounting columns are arranged in three groups and are equidistantly distributed on the front side of the fixed plate. One end of the mounting column is fixedly connected to the front outer edge of the fixed plate, and the other end of the mounting column is fixedly connected to the front side of the workbench. The mounting column is overall in a "U" design.

[0012] As a preferred solution of the present invention, the abutment plate is designed in an arc shape, and the outer side surface of the abutment plate protrudes from the outer surface of the fixed disk. When the motor rotates, the abutment plate passes along the middle of the mounting column and abuts against the hinge plate and the limit plate.

[0013] As a preferred solution of the present invention, when the movable column moves to the front of the permanent magnet plate, a magnetic attraction force is generated between the permanent magnet block and the permanent magnet plate, and the magnetic attraction force pulls the movable column backward to the inner cavity of the turntable, so that the front end of the movable column remains flush with the front of the turntable.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The device has redesigned the bending part of the material to achieve a more efficient automatic loading and unloading function. It is fixed on the front of the workbench by setting a fixed plate and a mounting column, and is installed with a motor. The motor drives the turntable to rotate, and the movable column is set to be movable and freely retractable. The elasticity of the spring three and the staggered distribution of the magnetic attraction between the permanent magnet block and the permanent magnet plate are used to make the movable column rotate when driven by the turntable, and automatically shrink after the bending operation is completed on the material, so as not to affect the discharge of the material. The limit mechanism is used to abut the left end of the loaded material to complete the positioning. Due to the opening of the card slot, the material distributed in a straight line is just intercepted by the limit. After the material is bent, the outer part of the bent material just abuts against the limit block, and the inclined surface of the limit block is used to push the limit block backward after the material is discharged, so as to realize the functions of fixing the loading and giving way to the unloading, and greatly improve the loading and unloading function of the device.

[0016] 2. The device is also provided with a clamping mechanism to synchronously clamp and release the material that has been loaded into place. It applies pressure to the upper and lower clamping blocks through spring 2 to clamp the material. A hinged frame is provided to movably hinge the hinged plate and the limit plate. When the material passes through the through hole, the hinged design of the hinged plate realizes the function of the two groups of clamping blocks being synchronized up and down. The abutment plate is driven by the turntable periodically and abuts against the hinged plate and the limit plate, so that the hinged plate is driven by the limit plate to drive the clamping block to move upward and downward respectively, thereby realizing the loosening operation of the material and facilitating the passage of the material. After the material is positioned, the abutment plate moves to a position disengaged from the limit plate, so that the spring 2 drives the clamping block to automatically reset and realize clamping. This design realizes efficient synchronization between the clamping of the clamping mechanism and the bending and unloading of the turntable and movable column, thereby improving the reliability of the device.

[0017] 3. This device utilizes the cooperation of the turntable and the clamping mechanism so that the motor can rotate continuously by controlling the speed and form a fixed loading, bending and unloading cycle. After the material is rotated and bent by the movable column, the left side of the material is the bent part, which cannot abut against the card slot and realize limit fixation, while the bent arc part can contact with the limit block and push the connecting seat and the telescopic column to move toward the inside of the fixed cylinder to realize the function of making way for unloading. After the material is unloaded, the telescopic column can be reset under the elastic force of spring 1, and the retractable design of the movable column realizes the integrated function of loading and unloading of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the mounting column, the fixing plate, the limiting mechanism, the clamping mechanism, the feeding mechanism, the material storage trough, the telescopic rod, the material, the rotating plate, the limiting column, the movable and abutting plates of the present invention;

[0020] Figure 3 It is a schematic diagram of the separation of the clamping mechanism of the present invention;

[0021] Figure 4 The top view of the fixed disk and the rotating disk of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 5 The top view of the fixed disk and the rotating disk of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 6 It is a schematic diagram of the separation of the mounting column, the fixed plate, the limiting mechanism, the motor, the rotating plate, the limiting column, the movable column, the spring three, the permanent magnet plate, the connecting plate, the abutting plate and the permanent magnet block of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal front cutaway of the turntable of the present invention;

[0025] Figure 8 It is a schematic diagram of the separation of the limiting mechanism of the present invention.

[0026] In the figure: 1. base; 2. workbench; 3. mounting column; 4. fixed plate; 5. limiting mechanism; 51. fixed cylinder; 52. spring one; 53. telescopic column; 54. connecting seat; 55. limiting block; 56. slot; 6. clamping mechanism; 61. fixed frame; 62. guide column; 63. spring two; 64. clamping block; 65. fixed slot; 66. hinged frame; 67. hinged plate; 68. limiting plate; 69. through hole; 7. feeding mechanism; 8. storage trough; 9. telescopic rod; 10. material; 11. motor; 12. turntable; 13. limiting column; 14. movable column; 15. spring three; 16. permanent magnet plate; 17. connecting plate; 18. abutment plate; 19. permanent magnet block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 8As shown, an embodiment of the present invention provides a wire bending machine, including a base 1, a workbench 2, a mounting column 3, a motor 11, a feeding mechanism 7 and a storage tank 8 are fixedly installed on the front of the workbench 2 from left to right in sequence, a telescopic rod 9 is installed on the right side of the storage tank 8, and multiple groups of materials 10 are placed longitudinally inside the storage tank 8, one end of the mounting column 3 is fixedly connected to a fixed disk 4, the output shaft of the motor 11 is fixedly connected to a turntable 12, a limiting column 13 is fixedly installed on the front of the turntable 12, and a movable column 14 is movably sleeved, the movable column 14 abuts against the inner wall of the turntable 12, and a spring three 15 is elastically installed, one end of the movable column 14 is fixedly connected to a permanent magnet block 19, a permanent magnet plate 16 is fixedly installed on the lower right side of the front of the fixed disk 4, and a limiting mechanism 5 is installed on the front of the fixed disk 4;

[0029] The limiting mechanism 5 includes a fixed cylinder 51 fixedly mounted on the left side of the front face of the fixed plate 4, a spring 52 and a telescopic column 53 are movably sleeved inside the fixed cylinder 51, one end of the telescopic column 53 is fixedly connected to a connecting seat 54, a limiting block 55 is fixedly mounted on the front face of the connecting seat 54, a slot 56 is provided on the front face of the limiting block 55, and the material 10 is driven by the feeding mechanism 7 to pass to the left between the limiting column 13 and the movable column 14, and fits into the slot 56;

[0030] The device redesigns the bending part of the material 10 to achieve a more efficient automatic loading and unloading function. The fixed plate 4 and the mounting column 3 are fixed on the front of the workbench 2, and a motor 11 is installed. The motor 11 drives the turntable 12 to rotate, and the movable column 14 is set to be movable and freely retractable. The elasticity of the spring 3 15 and the magnetic attraction between the permanent magnet block 19 and the permanent magnet plate 16 are staggered to make the movable column 14 rotate when driven by the turntable 12, and after the bending operation of the material 10 is completed, the material 10 is automatically loaded. The material 10 is contracted, so as not to affect the discharge of the material 10. The limiting mechanism 5 is used to abut the left end of the loaded material 10 to complete the positioning. Due to the opening of the card slot 56, the material 10 distributed in a straight line is just intercepted by the limiting mechanism. After the material 10 is bent, the bent outer part of the material 10 just abuts against the limiting block 55, and the inclined surface of the limiting block 55 is used to push the limiting block 55 backward after the material 10 is discharged, thereby realizing the functions of fixing the loading material and giving way to the unloading material, and greatly improving the loading and unloading function of the device.

[0031] The output shaft of the motor 11 is fixedly mounted with a connecting plate 17 located at the rear side of the fixed disk 4, the front side of the connecting plate 17 is fixedly connected with an abutment plate 18, and the front side of the workbench 2 is mounted with a clamping mechanism 6 located between the turntable 12 and the feeding mechanism 7;

[0032] The clamping mechanism 6 includes a fixed frame 61 fixedly installed on the front of the workbench 2, and multiple groups of guide columns 62 are fixedly installed on the inner wall of the fixed frame 61. The outer surface of the guide column 62 is slidably installed with two groups of clamping blocks 64 and spring 2 63, and spring 2 63 is elastically installed between the clamping block 64 and the inner wall of the fixed frame 61. The opposite surfaces of the two groups of clamping blocks 64 are provided with fixed grooves 65. The clamping block 64 is fixedly installed with a hinged frame 66 on one side facing the inner wall of the fixed frame 61. The interiors of the upper and lower groups of hinged frames 66 are both movably hinged with hinged plates 67, and the limit plates 68 are hinged through the hinged plates 67. The material 10 fits through the fixed grooves 65 and the limit plates 68.

[0033] The device is also provided with a clamping mechanism 6 to synchronously clamp and release the material 10 that has been loaded. The clamping mechanism 6 applies pressure to the upper and lower clamping blocks 64 through a spring 2 63 to clamp the material 10. The hinged frame 66 is provided to movably hinge the hinged plate 67 and the limit plate 68. When the material 10 passes through the through hole 69, the hinged design of the hinged plate 67 realizes the function of the upper and lower synchronization of the two sets of clamping blocks 64. The abutment plate 18 is driven by the turntable 12 periodically and is in contact with the hinged plate 67 and the limit plate 68. The positioning plate 68 abuts, so that the hinged plate 67 is driven by the limiting plate 68 to drive the clamping block 64 to move upward and downward respectively, thereby realizing the loosening operation of the material 10 and facilitating the passage of the material 10. After the material 10 is positioned, the abutting plate 18 moves to a position disengaged from the limiting plate 68, so that the spring 2 63 drives the clamping block 64 to automatically reset and realize clamping. This design realizes efficient synchronization of the clamping of the clamping mechanism 6 and the bending and unloading of the turntable 12 and the movable column 14, thereby improving the reliability of the device.

[0034] A through hole 69 is provided in the middle of the limiting plate 68. The size of the through hole 69 is adapted to the material 10, and the axis position of the through hole 69 remains unchanged.

[0035] The through hole 69 is colinear with the movement axis of the material 10. When the material 10 passes through the through hole 69, it is equivalent to fixing the height position of the limit plate 68. Therefore, when the abutment plate 18 pushes the hinge plate 67 and the limit plate 68, the movement displacement of the upper and lower sets of hinge plates 67 is the same, so that the movement of the upper and lower sets of clamping blocks 64 is synchronized, so that the pressure of clamping the material 10 is the same.

[0036] The top view cross-section of the stopper 55 is a right triangle, the inclined surface of the stopper 55 faces right, and the contact surface of the slot 56 and the material 10 remain flush with each other;

[0037] like Figure 5As shown, the inclined surface of the limit block 55 faces right. After the material 10 is rotated and bent by the movable column 14, the left side is the bent part, which cannot abut against the slot 56 to achieve limit fixation, while the bent arc part can contact with the limit block 55 and push the connecting seat 54 and the telescopic column 53 to move toward the inside of the fixed cylinder 51 to achieve the function of making way for unloading. After the material 10 is unloaded, the telescopic column 53 can be reset under the elastic force of the spring 1 52.

[0038] The two ends of the spring 1 52 are elastically connected to the telescopic column 53 and the fixed cylinder 51 respectively, and the telescopic column 53 is elastically supported inside the fixed cylinder 51 by the spring 1 52;

[0039] The spring 1 52 generates a rebound force when the telescopic column 53 and the connecting seat 54 are pushed and compressed by the material 10 , and drives the connecting seat 54 to return to its original position after the material 10 is unloaded and released from the pressure on the limit block 55 .

[0040] The mounting columns 3 are arranged in three groups and are equidistantly distributed on the front of the fixing plate 4. One end of the mounting column 3 is fixedly connected to the outer edge of the front of the fixing plate 4, and the other end of the mounting column 3 is fixedly connected to the front of the workbench 2. The mounting column 3 is in a "U" design as a whole.

[0041] The mounting column 3 is fixedly connected to the front side of the workbench 2 , and one end thereof is fixedly connected to the fixed disk 4 from the front side, so as to make way for the abutment plate 18 when the abutment plate 18 is rotated by the turntable 12 . The fixed disk 4 is fixed as a whole to provide support for the limiting mechanism 5 .

[0042] The abutment plate 18 is designed in an arc shape, and the outer side surface of the abutment plate 18 protrudes from the outer surface of the fixed plate 4. When the abutment plate 18 rotates with the motor 11, it passes along the middle of the mounting column 3 and abuts against the hinge plate 67 and the limit plate 68.

[0043] The outer arc design of the abutment plate 18 allows it to squeeze the clamping mechanism 6 to the right when it rotates to contact the clamping mechanism 6, loosening the clamping block 64 to allow the material 10 to pass through.

[0044] When the movable column 14 moves to the front of the permanent magnet plate 16, a magnetic attraction is generated between the permanent magnet block 19 and the permanent magnet plate 16, and the magnetic attraction pulls the movable column 14 backward to the inner cavity of the turntable 12, so that the front end of the movable column 14 is flush with the front face of the turntable 12;

[0045] When the movable column 14 is driven by the rotation of the turntable 12 and is located in the front coverage area of ​​the permanent magnet plate 16, the permanent magnet block 19 is magnetically attracted to the permanent magnet plate 16 and pulls the movable column 14 to the inside of the turntable 12 so that its front end is flush with the turntable 12, avoiding limiting and blocking effects on the material 10 and facilitating subsequent unloading of the material 10.

[0046] Working principle:

[0047] When the device is working, the telescopic rod 9 is started and a group of materials 10 located at the bottom of the inner cavity of the storage tank 8 is pushed to the left, so that it moves to the left and enters the feeding mechanism 7. The feeding mechanism 7 is started to drive the material 10 to move to the left. At this time, the telescopic rod 9 is reset, and the next group of materials 10 are filled in the storage tank 8. The motor 11 is started and drives the turntable 12, the connecting plate 17 and the abutment plate 18 to rotate counterclockwise. When the movable column 14 moves to the area directly in front of the permanent magnetic plate 16, it is attracted to the inside of the turntable 12 by the magnetic attraction generated between the permanent magnetic block 19 and the permanent magnetic plate 16. When the abutment plate 18 is driven to the position abutting against the hinge plate 67, the hinge plate 67 and the limiting plate 68 are pushed to the right by the limiting pressure of the abutment plate 18, and the upper and lower groups of hinged plates 67 begin to drive the upper and lower groups of clamping blocks 64 to move upward and downward along the surface of the guide column 62, so that the material 10 can pass through the fixed groove 65 and the through hole 69.

[0048] Then, the left end of the material 10 abuts against the clamping groove 56 under the drive of the feeding mechanism 7. At this time, the motor 11 drives the movable column 14 to move to a position away from the permanent magnetic plate 16. The movable column 14 moves forward and resets under the action of the spring three 15, and the abutting plate 18 is separated from the contact with the limit plate 68 and the hinge plate 67, so that the clamping block 64 moves synchronously towards each other under the action of the spring two 63, thereby clamping the material 10.

[0049] Subsequently, the movable column 14 is driven by the turntable 12 to rotate 360°, and abuts against the outer surface of the material 10, and continues to rotate to bend the material 10. By setting the position of the permanent magnetic plate 16, the movable column 14 is adsorbed by the permanent magnetic plate 16 through the permanent magnetic block 19 after bending the material 10 to a specified angle, thereby pulling the movable column 14 into the turntable 12, and the abutting plate 18 is driven to abut against the clamping mechanism 6 again, and the clamping block 64 is released, so that the material 10 can be automatically The material 10 is moved forward and then the feeding mechanism 7 is started to continuously push the material 10 to the left. The next group of materials 10 is pushed into the feeding mechanism 7 through the telescopic rod 9. The bent material 10 contacts the inclined surface of the limit block 55 with its bent portion and avoids the matching contact with the card slot 56. Then, the card slot 56 drives the telescopic column 53 to move backward under the pushing action of the material 10, and the material 10 is discharged. At the same time, the next group of materials 10 continues to fill the position under the action of the feeding mechanism 7, completing a bending cycle.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire bending machine, comprising a workbench (2), wherein a mounting column (3), a motor (11), a feeding mechanism (7) and a material storage trough (8) are fixedly mounted on the front of the workbench (2) in order from left to right, a telescopic rod (9) is mounted on the right side of the material storage trough (8), and a plurality of groups of materials (10) are longitudinally placed inside the material storage trough (8), Features: One end of the mounting column (3) is fixedly connected to a fixed disk (4); the output shaft of the motor (11) is fixedly connected to a turntable (12); a limiting column (13) is fixedly installed on the front of the turntable (12) and is movably sleeved with a movable column (14); the movable column (14) abuts against the inner wall of the turntable (12) and is elastically mounted with a spring (15); one end of the movable column (14) is fixedly connected to a permanent magnet block (19); a permanent magnet plate (16) is fixedly installed on the lower right side of the front of the fixed disk (4); a limiting mechanism (5) is installed on the front of the fixed disk (4); when the movable column (14) moves to the front of the permanent magnet plate (16), a magnetic attraction force is generated between the permanent magnet block (19) and the permanent magnet plate (16); the magnetic attraction force pulls the movable column (14) backward to the inner cavity of the turntable (12), so that the front end of the movable column (14) remains flush with the front of the turntable (12); The limiting mechanism (5) comprises a fixed cylinder (51) fixedly mounted on the left side of the front face of the fixed plate (4); a spring (52) and a telescopic column (53) are movably sleeved inside the fixed cylinder (51); one end of the telescopic column (53) is fixedly connected to a connecting seat (54); a limiting block (55) is fixedly mounted on the front face of the connecting seat (54); a slot (56) is provided on the front face of the limiting block (55); the material (10) is driven by the feeding mechanism (7) to pass leftward between the limiting column (13) and the movable column (14) and fits into the slot (56); the two ends of the spring (52) are elastically connected to the telescopic column (53) and the fixed cylinder (51) respectively; the telescopic column (53) is elastically supported inside the fixed cylinder (51) by the spring (52); The output shaft of the motor (11) is fixedly mounted with a connecting plate (17) located at the rear side of the fixed disk (4); the front side of the connecting plate (17) is fixedly connected with an abutment plate (18); and the front side of the workbench (2) is mounted with a clamping mechanism (6) located between the rotating disk (12) and the feeding mechanism (7); The clamping mechanism (6) comprises a fixed frame (61) fixedly mounted on the front side of the workbench (2), a plurality of guide columns (62) are fixedly mounted on the inner wall of the fixed frame (61), two upper and lower groups of clamping blocks (64) and a second spring (63) are slidably mounted on the outer surface of the guide column (62), and a second spring (63) is elastically mounted between the clamping block (64) and the inner wall of the fixed frame (61), and the opposite surfaces of the two groups of clamping blocks (64) are provided with fixing grooves (65), and the clamping blocks (6 4) A hinged frame (66) is fixedly installed on one side of the inner wall of the fixed frame (61), and hinged plates (67) are movably hinged inside the upper and lower sets of the hinged frames (66), and a limit plate (68) is hingedly connected through the hinged plate (67), and the material (10) is adapted to pass through the fixed groove (65) and the limit plate (68), and a through hole (69) is opened in the middle of the limit plate (68), and the size of the through hole (69) is adapted to the material (10), and the axis position of the through hole (69) remains unchanged; The abutment plate (18) is designed to be arc-shaped, and the outer side surface of the abutment plate (18) protrudes from the outer surface of the fixed plate (4). When the abutment plate (18) rotates with the motor (11), it passes along the middle of the mounting column (3) and abuts against the hinge plate (67) and the limit plate (68); The left end of the material (10) is driven by the feeding mechanism (7) to abut against the clamping groove (56). At this time, the motor (11) drives the movable column (14) to move to a position away from the permanent magnet plate (16). The movable column (14) moves forward and resets under the action of the spring three (15), and the abutment plate (18) is separated from the contact with the limit plate (68) and the hinge plate (67), so that the clamping block (64) moves synchronously towards each other under the action of the spring two (63), thereby clamping the material (10).

2. A wire bending machine according to claim 1, Features: The cross-sectional shape of the limit block (55) when viewed from above is a right triangle, the inclined surface of the limit block (55) faces rightward, and the contact surface between the clamping groove (56) and the material (10) remains flush with each other.

3. A wire bending machine according to claim 2, Features: The mounting columns (3) are arranged in three groups and are equidistantly distributed on the front side of the fixing plate (4). One end of the mounting column (3) is fixedly connected to the outer edge of the front side of the fixing plate (4), and the other end of the mounting column (3) is fixedly connected to the front side of the workbench (2). The mounting columns (3) are overall in a "U" design.

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