Bending machine for angle steel

Abstract

The bending machine for the angle steel is applied to the field of angle steel bending and comprises a bottom plate, the top of the bottom plate is in bolting connection with a box body, the interior of the box body is in bolting connection with a first fixing frame, the interior of the first fixing frame is rotationally connected with a threaded rod through a bearing, and one end of the threaded rod is fixedly sleeved with a first motor; and the surface of the threaded rod is in threaded connection with a first threaded plate. According to the angle steel bending device, the multi-angle bending function can be achieved, the position of a bending piece is adjusted front and back through a lower stroke assembly, the bending angle of angle steel is changed after the bending pieces at different positions are pushed out, the application range and flexibility of the device are improved, meanwhile, the angle steel can be accurately placed and limited, and the bending efficiency is improved. The precision of the angle steel bending point and the bending piece is improved, the angle steel can be prevented from sliding and shifting in the bending process, the machining quality of the angle steel is guaranteed, and practicability is high.

Description

Technical Field

[0001] The invention relates to the field of angle steel bending, and in particular to a bending machine for angle steel. Background Art

[0002] At present, a Chinese invention with the announcement number CN116652615B discloses a construction angle steel bending machine, including a support table, a support frame provided at the end of the support table, and a cutting mechanism and a bending mechanism; the cutting mechanism includes a guide column provided on the side of the support table, a sliding seat is slidably connected to the middle of the guide column, a support plate is rotatably connected to the sliding seat, the end of the support plate away from the sliding seat is fixedly connected to the guide plate, a hanging plate is provided on the side of the guide plate close to the support table, and a cutting wheel is provided on the end of the hanging plate; the bending mechanism includes a clearance groove provided on the side of the support table away from the support frame, and a deflection plate is rotatably connected to the end of the clearance groove close to the center of the support table. The invention is applicable to a construction angle steel bending machine, which can cut a notch on the side of the angle steel by two cutting wheels with adjustable angles that move forward and backward to facilitate bending; Although the existing bending machines can push the angle steel forward to bend it through the cooperation of the cylinder, the bending part and the fixed wheel, there are still other problems in the process of use, such as the lack of multi-angle bending function. Due to the limitation of the cylinder's own stroke and the length of the bending part, the forward distance of the bending part after being pushed out cannot be adjusted and is in a fixed state. The angle steel can only be at a set 90-degree angle after bending. When the angle steel needs to be bent to another angle, the bending mechanism can only be disassembled and then the position is determined after multiple disassembly and assembly tests. This method is not only time-consuming and labor-intensive, but also leaves multiple installation holes on the table, which has a great impact on its own stability, and it is impossible to bend the angle steel. For precise placement and limiting, the center of the angle steel needs to be aligned with the bending part when bending. If there is a deviation in the placement, one side of the angle steel will be longer and the other side will be shorter after bending, but the center is difficult to proofread. Since the angle steel needs to be heat-treated before the bending process, even if the mark is made on the angle steel in advance, it will disappear with the heat treatment. Therefore, it can only be placed based on the experience of the staff. After the angle steel is placed, as the bending part pushes forward, there is a certain probability that it will slide left and right. After sliding, the two ends will be of different lengths, which will have a certain impact on the bending quality of the angle steel. In order to solve the above problems, we propose a bending machine for angle steel. Summary of the invention

[0003] The purpose of the present invention is to provide a bending machine for angle steel, which solves the problem that the existing bending machines do not have a multi-angle bending function and cannot accurately place and limit the angle steel.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: A bending machine for angle steel, comprising a bottom plate, a box body bolted to the top of the bottom plate, a first fixed frame bolted to the inside of the box body, a threaded rod rotatably connected to the inside of the first fixed frame through a bearing, a first motor fixedly sleeved at one end of the threaded rod, a first threaded plate threadedly connected to the surface of the threaded rod, a bending mechanism and a reinforcement mechanism are respectively provided at the top of the first threaded plate and the top of the box body, two fixed rods are provided through the top of the box body, a first fixed wheel and a second fixed wheel are respectively fixedly sleeved on the surface of the fixed rod from top to bottom, a synchronous moving mechanism is provided inside the box body, two arc frames are placed on the top of the box body, an arc groove is provided on the top of the arc frame, a moving seat is provided inside the arc frame, a fixing spring is bolted between the front of the moving seat and the arc frame through a spring fixing sheet, a connecting plate is bolted to the top of the moving seat through a support rod, and a clamping seat is installed on one side of the connecting plate.

[0005] The above technical solution can achieve multi-angle bending functions. The position of the bending part can be adjusted forward and backward through the lower stroke component, so that the bending angle of the angle steel can be changed after the bending parts in different positions are pushed out, thereby improving the application range and flexibility of the device. At the same time, the angle steel can be accurately placed and limited, which improves the accuracy of the bending point of the angle steel and the bending part. It can also prevent the angle steel from sliding and deflecting during the bending process, thereby ensuring the processing quality of the angle steel and having high practicality.

[0006] The present invention is further configured as follows: the bending mechanism includes a U-shaped seat, the U-shaped seat is welded to the top of the first threaded plate, a first cylinder is bolted through the front of the U-shaped seat, and a bending piece is installed at the output end of the first cylinder.

[0007] By adopting the above technical solution, through the arrangement of the U-shaped seat, the first cylinder and the bending part, the bending part can be driven to move backward after the first cylinder is started. When the bending part moves backward, it will bend the angle steel with the cooperation of the first fixed wheel.

[0008] The present invention is further configured as follows: the reinforcement mechanism includes a fixing plate, the number of the fixing plates is two, the two fixing plates are welded to the top of the box body, screw rods are welded on both sides of the U-shaped seat, a sliding groove is opened inside the fixing plate, the other end of the screw rod extends to the outside of the sliding groove, and a fixing nut is threadedly connected to the surface of the screw rod.

[0009] By adopting the above technical solution, the U-shaped seat can be limited by setting the fixed plate, screw rod, fixed nut and sliding groove, which can share the force effect of the bending part pushing the first threaded plate when the diagonal steel is pushed, and play a role of secondary reinforcement.

[0010] The present invention is further configured as follows: the synchronous movement mechanism includes a second fixed frame, the second fixed frame is bolted to the inside of the box body, the inside of the second fixed frame is rotatably connected with a bidirectional screw through a bearing, the surface of the bidirectional screw is threadedly connected with two second threaded plates, the top of the second threaded plate is welded to the bottom of the arc frame, and the other end of the bidirectional screw is fixedly sleeved with a second motor.

[0011] By adopting the above technical solution, through the arrangement of the second fixed frame, the bidirectional screw, the second threaded plate and the second motor, the two arc frames and the clamping seat can be synchronously driven to move inward or outward, which is suitable for placing angle steels of different lengths.

[0012] The present invention is further configured as follows: two slide rails are bolted inside the second fixing frame, and sliding blocks slidably connected to the slide rails are welded to the front and back sides of the second threaded plate.

[0013] By adopting the above technical solution, the second threaded plate can be limited by setting the slide rail and the slider to prevent the second threaded plate from flipping over during the left-right movement.

[0014] The present invention is further configured as follows: a second cylinder is bolted through the back of the box, an output end of the second cylinder extends to the inside of the box and is installed with a base plate, two movable grooves are opened on the top of the box, and the top of the base plate is welded to the bottom of the fixing rod.

[0015] By adopting the above technical solution, through the arrangement of the second cylinder, the base plate and the movable groove, the fixed rod can be driven to move forward and backward, so that the staff can quickly insert the angle steel.

[0016] The present invention is further configured as follows: a limiting rod is slidably connected to the interior of the movable seat, and both ends of the limiting rod are welded to the interior of the arc frame.

[0017] By adopting the above technical solution, the movable seat can be limited by setting the limiting rod, so as to prevent the movable seat from tilting when it moves in an arc shape in the arc frame under the force.

[0018] The present invention is further configured as follows: the other end of the threaded rod penetrates the outside of the box body and is threadedly connected to a turning handle.

[0019] By adopting the above technical solution, through the setting of the turning handle, it is convenient for personnel to rotate the threaded rod by hand, so that the front and rear distance of the first threaded plate can be adjusted automatically or manually.

[0020] The present invention is further configured as follows: heat dissipation grooves are provided on both sides of the box body, and dustproof nets are bolted to both sides of the box body.

[0021] By adopting the above technical solution, the ventilation effect inside the box can be improved through the provision of the heat dissipation slots and the dustproof net, and dust can be prevented from falling into the box through the heat dissipation slots.

[0022] The present invention is further configured as follows: the fixing spring is made of carbon spring steel.

[0023] By adopting the above technical solution, the fixed spring has the characteristics of excellent mechanical properties, good anti-elasticity, low temperature resistance and corrosion resistance.

[0024] In summary, the present invention has the following beneficial effects: 1. The present invention first loosens the fixing nut with a tool, and the fixing nut releases the fixation of the screw rod and the U-shaped seat after being loosened, and then the personnel starts the first motor to drive the threaded rod to rotate automatically. When the threaded rod rotates automatically, it drives the first threaded plate and the U-shaped seat to move forward automatically. When the U-shaped seat moves forward automatically, it drives the bending part to move together. After the bending part moves automatically to a large extent, the turning handle is held by hand to rotate. When the turning handle rotates, it drives the threaded rod to rotate manually with the cooperation of the first fixing frame. When the threaded rod rotates manually, the accuracy of the short-distance forward movement of the U-shaped seat can be controlled, and the multi-angle bending function can be achieved. The position of the bending part is adjusted forward and backward through the lower stroke component, so that the bending angle of the diagonal steel of the bending part at different positions is changed after being pushed out, thereby improving the application range and flexibility of the device. 2. The present invention starts the second cylinder to drive the first fixed wheel to move backward. After the first fixed wheel moves backward to the bottom, the handheld workpiece, the angle steel, is placed between the two clamping seats. After the angle steel is placed, the second motor is started to drive the bidirectional screw to rotate. When the bidirectional screw rotates, it drives the two second threaded plates to move inward synchronously through the cooperation of the slide rail and the slider. When the second threaded plate moves, it drives the clamping seat to push the angle steel to position it at the center. Then the second cylinder is started to drive the first fixed wheel to move forward to fit the angle steel. The center of the angle steel is pushed by the bending part. The moving ends will drive the clamping seat to move backward in an arc trajectory. When the clamping seat moves backward, it will drive the moving seat to move together through the fixing of the connecting plate and the support rod. When the moving seat moves, it will slide on the limit rod and squeeze the fixed spring to shrink and deform it. When the angle steel is pulled upward, the fixed spring will drive the moving seat to reset, which can accurately place and limit the angle steel, improve the accuracy of the bending point and the bent part of the angle steel, and prevent the angle steel from sliding and deflecting itself during the bending process, thereby ensuring the processing quality of the angle steel and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the structure of the present invention; Figure 2 It is a schematic top view of the structure of the present invention; Figure 3 is a top sectional view of the structure of the present invention; Figure 4 It is a partial cross-sectional view of the front side of the structure of the present invention; Figure 5 It is a partial enlarged cross-sectional view of the structure of the present invention from top view; Figure 6 The present invention Figure 3 A magnified view of the structure in the middle.

[0026] 1. The bottom plate; 2. The box body; 3. The first fixed frame; 4. The threaded rod; 5. The first motor; 6. The first threaded plate; 7. The bending mechanism; 71. The U-shaped seat; 72. The first cylinder; 73. The bending part; 8. The reinforcing mechanism; 81. The fixed plate; 82. The screw rod; 83. The fixing nut; 9. The fixing rod; 10. The first fixed wheel; 11. The second fixed wheel; 12. The synchronous moving mechanism; 121. The second fixed frame; 122. The bidirectional screw rod; 123. The second threaded plate; 124. The second motor; 13. The arc frame; 14. The arc groove; 15. The moving seat; 16. The fixing spring; 17. The connecting plate; 18. The clamping seat; 19. The slide rail; 20. The slider; 21. The second cylinder; 22. The base plate; 23. The limiting rod; 24. The moving groove; 25. The turning handle; 26. The heat dissipation groove; 27. The dustproof net. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] Example 1: Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A bending machine for angle steel comprises a bottom plate 1, a box body 2 is bolted to the top of the bottom plate 1, a first fixed frame 3 is bolted to the inside of the box body 2, a threaded rod 4 is rotatably connected to the inside of the first fixed frame 3 through a bearing, a first motor 5 is fixedly sleeved at one end of the threaded rod 4, a first threaded plate 6 is threadedly connected to the surface of the threaded rod 4, a bending mechanism 7 and a reinforcement mechanism 8 are respectively provided at the top of the first threaded plate 6 and the top of the box body 2, two fixing rods 9 are provided through the top of the box body 2, a first fixing wheel 10 and a second fixing wheel 11 are respectively fixedly sleeved on the surface of the fixing rod 9 from top to bottom, a fixing nut 83 is first loosened with a tool, and the fixing nut 83 will release the fixation of the screw rod 82 and the U-shaped seat 71 after being loosened, and then a person Start the first motor 5 to drive the threaded rod 4 to rotate automatically. When the threaded rod 4 rotates automatically, it will drive the first threaded plate 6 and the U-shaped seat 71 to move forward automatically. When the U-shaped seat 71 moves forward automatically, it will drive the bending piece 73 to move together. After the bending piece 73 moves automatically to a large extent, hold the turning handle 25 by hand to rotate it. When the turning handle 25 rotates, it will drive the threaded rod 4 to rotate manually with the cooperation of the first fixed frame 3. When the threaded rod 4 rotates manually, the accuracy of the short-distance forward movement of the U-shaped seat 71 can be controlled. It can have multi-angle bending functions. The position of the bending piece can be adjusted forward and backward through the lower stroke component, so that the bending angle of the diagonal steel of the bending piece in different positions changes after being pushed out, thereby improving the applicability and flexibility of the device.

[0029] refer to Figure 1 and Figure 2 The bending mechanism 7 includes a U-shaped seat 71, which is welded to the top of the first threaded plate 6. A first cylinder 72 is bolted through the front of the U-shaped seat 71, and a bending piece 73 is installed at the output end of the first cylinder 72. Through the arrangement of the U-shaped seat 71, the first cylinder 72 and the bending piece 73, the bending piece 73 can be driven to move backward after the first cylinder 72 is started. When the bending piece 73 moves backward, it will bend the angle steel with the cooperation of the first fixed wheel 10.

[0030] refer to Figure 1 and Figure 2 The reinforcement mechanism 8 includes a fixing plate 81, and there are two fixing plates 81. The two fixing plates 81 are welded to the top of the box body 2. Screw rods 82 are welded on both sides of the U-shaped seat 71. A sliding groove is opened inside the fixing plate 81, and the other end of the screw rod 82 extends to the outside of the sliding groove. The surface of the screw rod 82 is threadedly connected with a fixing nut 83. Through the setting of the fixing plate 81, the screw rod 82, the fixing nut 83 and the sliding groove, the U-shaped seat 71 can be limited, and the force effect of the bending part 73 pushing the first threaded plate 6 in the diagonal steel can be shared, which plays a role of secondary reinforcement.

[0031] refer to Figure 1 , Figure 2 , Figure 3and Figure 4 A second cylinder 21 is bolted through the back of the box body 2, and the output end of the second cylinder 21 extends to the inside of the box body 2 and is installed with a base plate 22. Two movable grooves 24 are opened on the top of the box body 2, and the top of the base plate 22 is welded to the bottom of the fixed rod 9. Through the arrangement of the second cylinder 21, the base plate 22 and the movable groove 24, the fixed rod 9 can be driven to move forward and backward, which is convenient for the staff to quickly put in the angle steel.

[0032] refer to Figure 1 and Figure 3 The other end of the threaded rod 4 passes through the outside of the box body 2 and is threadedly connected to a turning handle 25. Through the setting of the turning handle 25, it is convenient for personnel to rotate the threaded rod 4 by hand, so that the front and rear distance of the first threaded plate 6 can be adjusted automatically or manually.

[0033] refer to Figure 1 , Figure 2 and Figure 3 Heat dissipation grooves 26 are provided on both sides of the box body 2, and dustproof nets 27 are bolted on both sides of the box body 2. The arrangement of the heat dissipation grooves 26 and the dustproof nets 27 can improve the ventilation effect inside the box body 2 and prevent dust from falling into the box body 2 from the heat dissipation grooves 26.

[0034] Brief description of the usage process: first use a tool to loosen the fixing nut 83, which will release the fixation of the screw rod 82 and the U-shaped seat 71 after loosening. Then, the personnel start the first motor 5 to drive the threaded rod 4 to rotate automatically. When the threaded rod 4 rotates automatically, it will drive the first threaded plate 6 and the U-shaped seat 71 to move forward automatically. When the U-shaped seat 71 moves forward automatically, it will drive the bending part 73 to move together. After the bending part 73 moves automatically to a large extent, hold the turning handle 25 by hand to rotate it. When the turning handle 25 rotates, it will drive the threaded rod 4 to rotate manually with the cooperation of the first fixing frame 3. When the threaded rod 4 rotates manually, the accuracy of the short-distance forward movement of the U-shaped seat 71 can be controlled.

[0035] Example 2: Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6A bending machine for angle steel, wherein a synchronous moving mechanism 12 is arranged inside a box body 2, two arc frames 13 are placed on the top of the box body 2, an arc groove 14 is opened on the top of the arc frame 13, a moving seat 15 is arranged inside the arc frame 13, a fixing spring 16 is bolted between the front of the moving seat 15 and the arc frame 13 through a spring fixing sheet, a connecting plate 17 is bolted to the top of the moving seat 15 through a supporting rod, a clamping seat 18 is installed on one side of the connecting plate 17, and the first fixed wheel 10 is driven to move backward by starting the second cylinder 21 first, and the first fixed wheel 10 places the angle steel with the handheld workpiece between the two clamping seats 18 after moving to the bottom, and the second motor 124 is started after the angle steel is placed to drive the bidirectional screw 122 to rotate, and the bidirectional screw 122 will drive the two second threaded plates 1 through the cooperation of the slide rail 19 and the slider 20 when rotating. 23 moves inward synchronously, and the second threaded plate 123 will drive the clamping seat 18 to push the angle steel to position it at the center when moving, and then start the second cylinder 21 to drive the first fixed wheel 10 to move forward and fit the angle steel. The center of the angle steel is pushed by the bending member 73, and the two ends will drive the clamping seat 18 to move backward in an arc trajectory. When the clamping seat 18 moves backward, it will drive the moving seat 15 to move together through the fixing of the connecting plate 17 and the support rod. When moving, the moving seat 15 will slide on the limit rod 23 and squeeze the fixed spring 16 to shrink and deform it. When the angle steel is pulled out upward, the fixed spring 16 will drive the moving seat 15 to reset, which can accurately place and limit the angle steel, improve the accuracy of the bending point of the angle steel and the bending part, and avoid the sliding and deviation of the angle steel itself during the bending process, thereby ensuring the processing quality of the angle steel and having high practicality.

[0036] refer to Figure 2 , Figure 3 and Figure 6 The synchronous moving mechanism 12 includes a second fixed frame 121, which is bolted to the inside of the box body 2. The inside of the second fixed frame 121 is rotatably connected with a bidirectional screw 122 through a bearing. The surface of the bidirectional screw 122 is threadedly connected with two second threaded plates 123. The top of the second threaded plate 123 is welded to the bottom of the arc frame 13. The other end of the bidirectional screw 122 is fixedly sleeved with a second motor 124. Through the arrangement of the second fixed frame 121, the bidirectional screw 122, the second threaded plate 123 and the second motor 124, the two arc frames 13 and the clamping seat 18 can be synchronously driven to move inward or outward, which is suitable for placing angle steels of different lengths.

[0037] refer to Figure 6 Two slide rails 19 are bolted inside the second fixed frame 121, and sliders 20 slidably connected to the slide rails 19 are welded on the front and back sides of the second threaded plate 123. Through the setting of the slide rails 19 and the sliders 20, the second threaded plate 123 can be limited to prevent the second threaded plate 123 from flipping over during the left and right movement.

[0038] refer to Figure 5 The interior of the movable seat 15 is slidably connected with a limiting rod 23, and both ends of the limiting rod 23 are welded to the interior of the arc frame 13. Through the setting of the limiting rod 23, the movable seat 15 can be limited to prevent the movable seat 15 from tilting when it moves in an arc shape in the arc frame 13 under force.

[0039] refer to Figure 5 The fixed spring 16 is made of carbon spring steel and has the characteristics of excellent mechanical properties, good anti-elasticity, low temperature resistance and corrosion resistance.

[0040] Brief description of the use process: First, start the second cylinder 21 to drive the first fixed wheel 10 to move backward. After the first fixed wheel 10 moves backward to the bottom, the handheld workpiece, the angle steel, is placed between the two clamping seats 18. After the angle steel is placed, start the second motor 124 to drive the bidirectional screw 122 to rotate. When the bidirectional screw 122 rotates, it will drive the two second threaded plates 123 to move inward synchronously through the cooperation of the slide rail 19 and the slider 20. When the second threaded plate 123 moves, it will drive the clamping seat 18 to push the angle steel to make it fixed. The first fixed wheel 10 is positioned at the center, and then the second cylinder 21 is started to drive the first fixed wheel 10 to move forward and fit the angle steel. The center of the angle steel is pushed by the bending piece 73 at both ends to drive the clamping seat 18 to move backward in an arc trajectory. When the clamping seat 18 moves backward, it will drive the moving seat 15 to move together through the fixing of the connecting plate 17 and the support rod. When the moving seat 15 moves, it will slide on the limit rod 23 and squeeze the fixed spring 16 to make it shrink and deform. When the angle steel is pulled upward, the fixed spring 16 will drive the moving seat 15 to reset.

[0041] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A bending machine for angle steel, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is bolted to a box body (2), the interior of the box body (2) is bolted to a first fixed frame (3), the interior of the first fixed frame (3) is rotatably connected to a threaded rod (4) via a bearing, one end of the threaded rod (4) is fixedly sleeved with a first motor (5), the surface of the threaded rod (4) is threadedly connected to a first threaded plate (6), the top of the first threaded plate (6) and the top of the box body (2) are respectively provided with a bending mechanism (7) and a reinforcement mechanism (8), the top of the box body (2) is penetrated by two fixed rods (9), the surfaces of the fixed rods (9) are respectively sleeved with a first motor (5) from top to bottom. A first fixed wheel (10) and a second fixed wheel (11) are connected, a synchronous moving mechanism (12) is arranged inside the box body (2), two arc-shaped frames (13) are placed on the top of the box body (2), an arc-shaped groove (14) is opened on the top of the arc-shaped frame (13), a moving seat (15) is arranged inside the arc-shaped frame (13), a fixing spring (16) is bolted between the front side of the moving seat (15) and the arc-shaped frame (13) through a spring fixing sheet, a connecting plate (17) is bolted on the top of the moving seat (15) through a supporting rod, and a clamping seat (18) is installed on one side of the connecting plate (17).

2. The angle steel bending machine according to claim 1, characterized in that: The bending mechanism (7) comprises a U-shaped seat (71), the U-shaped seat (71) being welded to the top of the first threaded plate (6), a first cylinder (72) being bolted through the front of the U-shaped seat (71), and a bending member (73) being installed at the output end of the first cylinder (72).

3. The angle steel bending machine according to claim 2, characterized in that: The reinforcement mechanism (8) comprises a fixing plate (81), the number of the fixing plates (81) being two, the two fixing plates (81) being welded to the top of the box body (2), a screw rod (82) being welded to both sides of the U-shaped seat (71), a sliding groove being provided inside the fixing plate (81), the other end of the screw rod (82) extending to the outside of the sliding groove, and a fixing nut (83) being threadedly connected to the surface of the screw rod (82).

4. The angle steel bending machine according to claim 1, characterized in that: The synchronous movement mechanism (12) comprises a second fixed frame (121), the second fixed frame (121) is bolted to the inside of the box body (2), the inside of the second fixed frame (121) is rotatably connected to a bidirectional screw rod (122) via a bearing, the surface of the bidirectional screw rod (122) is threadedly connected to two second threaded plates (123), the top of the second threaded plate (123) is welded to the bottom of the arc frame (13), and the other end of the bidirectional screw rod (122) is fixedly sleeved with a second motor (124).

5. The angle steel bending machine according to claim 4, characterized in that: Two slide rails (19) are bolted inside the second fixing frame (121), and sliding blocks (20) slidably connected to the slide rails (19) are welded on the front and back sides of the second threaded plate (123).

6. The angle steel bending machine according to claim 1, characterized in that: A second cylinder (21) is bolted through the back of the box (2), the output end of the second cylinder (21) extends into the interior of the box (2) and is mounted with a base plate (22), two movable grooves (24) are formed on the top of the box (2), and the top of the base plate (22) is welded to the bottom of the fixing rod (9).

7. The angle steel bending machine according to claim 1, characterized in that: A limiting rod (23) is slidably connected to the interior of the movable seat (15), and both ends of the limiting rod (23) are welded to the interior of the arc frame (13).

8. The angle steel bending machine according to claim 1, characterized in that: The other end of the threaded rod (4) penetrates the outside of the box body (2) and is threadedly connected to a turning handle (25).

9. The angle steel bending machine according to claim 1, characterized in that: Both sides of the box body (2) are provided with heat dissipation grooves (26), and both sides of the box body (2) are bolted with dustproof nets (27).

10. The angle steel bending machine according to claim 1, characterized in that: The fixing spring (16) is made of carbon spring steel.

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