Numerical control bending forming device and method for communication tower steel structural member

Abstract

The application discloses a numerical control bending forming device for a communication tower steel structural member, which comprises a bending rack, a driving assembly is fixedly connected to the vertical side wall of the bending rack, an adjustable die head mechanism is fixedly connected to the output end of the driving assembly, a forming lower die assembly is fixedly connected to the bending rack, the forming lower die assembly is located below the adjustable die head mechanism, and a decontamination mechanism is connected between the forming lower die assembly and the bending rack. The numerical control bending forming device is simple and convenient to operate, can quickly adjust the die head type according to actual bending requirements, can make the device applicable to various communication tower steel structures with different bending requirements, effectively improves the flexibility of the numerical control bending machine, can reduce the downtime during adjustment of the die head, and effectively improves the bending efficiency of the numerical control bending device.

Description

Technical Field

[0001] This invention relates to the field of bending machine technology, specifically to a CNC bending and forming device and method for steel structural components of communication towers. Background Technology

[0002] Communication towers are generally composed of steel components such as the tower body, tower feet, platform, ladder, protective cage, antenna support, mast, feeder frame, lightning rod, down conductor, and grounding connector. The tower types typically include single-tube towers, tapered tube towers, steel pipe towers, and angle steel towers. Among them, the tower body sections of single-tube towers and tapered tube towers, as well as a large number of steel components such as ladders, masts, and platforms, need to be bent using bending machines to bend the materials into the required shapes.

[0003] In existing CNC bending machines, the bending dies are fixed, and one type of bending die can only correspond to a specific bending effect. When bending different steel components to achieve different bending effects, it is often necessary to use another bending machine with a different die or to remove the existing bending machine's die and replace it with a different model. This operation is very cumbersome and results in long downtime for the bending machine, leading to reduced bending efficiency and affecting the bending processing efficiency of communication tower steel structural components. During bending, dirt on the surface of the steel components will be detached under force and fall into the forming groove. Over time, this dirt can accumulate in the forming groove, affecting the bending quality. Summary of the Invention

[0004] The purpose of this invention is to provide a CNC bending and forming device and method for steel structural components of communication towers, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a CNC bending and forming device for steel structural components of communication towers, including a bending frame, a drive assembly fixedly connected to the vertical side wall of the bending frame, an adjustable die head mechanism fixedly connected to the output end of the drive assembly, a forming lower die assembly fixedly connected to the bending frame, the forming lower die assembly being located below the adjustable die head mechanism, and a cleaning mechanism connecting the forming lower die assembly and the bending frame. The adjustable die head mechanism includes two symmetrically fixed connecting frames to the drive assembly. A sliding plate is fixedly connected between the two connecting frames. A sliding hole is provided at the top of the bending frame. The sliding plate passes through the bending frame through the sliding hole. Adjusting screws are rotatably connected to both sides of the sliding plate. A moving plate is threaded onto the external thread of the adjusting screw. A triangular sleeve is fixedly connected to the vertical side wall of the moving plate. A triangular insert is movably inserted into the triangular sleeve. A connecting rod is fixedly connected to one end of the triangular insert outside the triangular sleeve. A combined die head is fixedly connected between the two connecting rods. The combined die head is located below the sliding plate. A support assembly is fixedly connected to the bottom of the sliding plate.

[0006] Furthermore, the forming lower die assembly includes a mounting groove formed on the bending machine frame, a first electric push rod fixedly connected in the mounting groove, a fixing plate fixedly connected to the output end of the first electric push rod, a forming die base fixedly connected to the upper side wall of the fixing plate, the forming die base corresponding to the combined die head, a plurality of forming grooves matching the combined die head evenly formed on the upper side of the forming die base, the bottom of the forming die base slidingly connected to the bending machine frame, the combined die head having a polygonal prism structure, and different types of bending dies respectively provided on its outer peripheral side; the triangular sleeve and the triangular insert plate cooperate with each other to form a quick-change engagement mechanism for rotating, unlocking and locking the combined die head. The lower molding die assembly moves horizontally according to the rotational switching position of the combined die head to adjust the corresponding molding groove to be directly below the combined die head, thereby achieving coordinated alignment between the upper and lower dies.

[0007] Furthermore, the decontamination mechanism includes a booster air pump fixedly connected to the vertical side wall of the bending machine frame. A filter plate is fixedly connected to the air inlet of the booster air pump, and a hose is fixedly connected to the air outlet of the booster air pump. A distribution pipe is fixedly connected to the end of the hose away from the booster air pump, and multiple spray pipes are fixedly connected to the distribution pipe. The multiple spray pipes are respectively fixedly connected to multiple forming grooves. When the bending operation is completed and the combined die head is raised, the decontamination mechanism coordinates to start the booster air pump to perform high-pressure blowing on the forming grooves.

[0008] Furthermore, the drive assembly includes two hydraulic cylinders fixedly connected to the vertical side wall of the bending machine frame. The output end of each hydraulic cylinder is fixedly connected to a drive rod, and the lower end of the drive rod is fixedly connected to the upper side of the connecting frame.

[0009] Furthermore, the support assembly includes a fixing groove formed at the bottom of the sliding plate, in which a second electric push rod is fixedly connected. The output end of the second electric push rod faces downward and is fixedly connected to a pressure plate. The pressure plate is tightly fitted with the combined die head. After the triangular sleeve locks the triangular insert plate, the support assembly collaboratively drives the pressure plate to press down to provide auxiliary support and enhance the structural rigidity during the bending process.

[0010] Furthermore, two slide rails are symmetrically fixedly connected to the bottom of the forming mold base, and cylindrical guide columns are fixedly connected to the lower side of the slide rails. Two guide grooves are symmetrically opened on the bending frame, and the two cylindrical guide columns are slidably connected in the two guide grooves respectively.

[0011] Furthermore, each of the four corners of the bottom of the bending machine frame is fixedly connected with a foot, and the foot is made of stainless steel.

[0012] Furthermore, an operating wheel is fixedly sleeved on the outside of the adjusting screw, and the operating wheel has multiple hollow holes.

[0013] Furthermore, two triangular reinforcing plates are fixedly connected between the upper and lower side walls of the connecting frame and the vertical side wall of the sliding plate. A top plate is fixedly connected to the upper side of the triangular sleeve. The top plate is located below the sliding plate. A slider is fixedly connected to the upper side of the top plate. A groove matching the slider is provided on the lower side of the sliding plate.

[0014] A CNC bending forming method for steel structural components of communication towers includes the following steps: S1: Unlocking step: Rotate the adjusting screw to disengage the triangular sleeve from the triangular insert plate and unlock the combined mold head; S2: Coordinated adjustment steps, rotate the combined mold head to select the target mold head, and at the same time control the first electric push rod to drive the forming mold base to move, aligning the corresponding forming groove with the target mold head; S3: Locking and supporting steps: Rotate the adjusting screw in the opposite direction to lock the combined mold head, and start the second electric push rod to drive the pressure plate to press the combined mold head for auxiliary support; S4: Bending and cleaning steps. The drive component moves downward to bend, and after bending, it moves upward to start the booster air pump for blowing and cleaning.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through its bending frame, drive assembly, adjustable die head mechanism, and forming lower die assembly, allows the communication tower steel structure to be bent. During bending, the steel structure is placed on the forming die base. The drive assembly moves a sliding plate downwards, which in turn moves a combined die head downwards. The combined die head contacts the steel structure and compresses it. The combined die head, in conjunction with the forming groove on the forming die base, bends the steel structure into the desired shape. To change the bending effect, two adjusting screws are rotated. The screws, through their threaded connection with the moving plate, move the moving plate away from the combined die head. The moving plate then disengages the triangular sleeves from the triangular inserts, thus releasing the two triangular sleeves from their limiting and fixing position on the two triangular inserts. The device can release the limiting and fixing of the combined die head. By rotating the combined die head, different types of dies can be adjusted to the lower position. This allows for the selection of different die head models according to actual bending requirements. The first electric push rod adjusts the corresponding forming groove to the lower position of the combined die head. After adjustment, the adjusting screw is rotated in the opposite direction to allow the triangular insert plate to re-insert into the triangular sleeve, completing the reinstallation and fixing of the combined die head. The operation is simple and convenient, and the die head type can be quickly adjusted according to actual bending requirements. This makes the device suitable for various communication tower steel structures with different bending needs, effectively improving the flexibility of CNC bending machine use and reducing downtime during die head adjustment, thus effectively improving the bending efficiency of the CNC bending device.

[0016] 2. The present invention, through its decontamination mechanism, allows for the activation of a booster air pump during use. This pump draws in air, pressurizes it, and then delivers the pressurized gas through a hose to a distribution pipe. The distribution pipe then sprays the high-pressure gas through multiple nozzles, which in turn propels the high-pressure gas into the forming tank at high speed. The high-pressure gas flows along the tank body, effectively cleaning relatively light dirt and debris, allowing them to quickly detach from the forming tank. This rapid cleaning of the forming tank prevents dirt and impurities from affecting bending quality and improves the ease of cleaning the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 for Figure 1 Schematic diagram of the structure of the bending machine frame; Figure 4 for Figure 1 Schematic diagram of the connection structure between the drive assembly and the adjustable mold head mechanism; Figure 5 for Figure 1 Schematic diagram of the middle sliding plate; Figure 6 for Figure 1Schematic diagram of the connection structure between the triangular sleeve and the movable plate; Figure 7 for Figure 1 Schematic diagram of the structure of the intermediate combined mold head; Figure 8 for Figure 1 Schematic diagram of the connection structure between the middle forming lower mold assembly and the decontamination mechanism; Figure 9 for Figure 1 A schematic diagram of the structure of the middle forming lower mold assembly.

[0018] In the diagram: 1. Bending machine frame; 2. Drive assembly; 3. Adjustable die head mechanism; 4. Forming lower die assembly; 5. Cleaning mechanism; 6. Connecting frame; 7. Sliding plate; 8. Sliding hole; 9. Adjusting screw; 10. Moving plate; 11. Triangular sleeve; 12. Triangular insert plate; 13. Connecting rod; 14. Combined die head; 15. Support assembly; 16. Mounting slot; 17. First electric push rod; 18. Fixing plate; 19. Forming die base; 2 0. Molding groove; 21. Boosting air pump; 22. Filter plate; 23. Hose; 24. Distribution pipe; 25. Spray pipe; 26. Hydraulic cylinder; 27. Drive rod; 28. Fixing groove; 29. ​​Second electric push rod; 30. Pressure plate; 31. Slide rail; 32. Cylindrical guide column; 33. Guide groove; 34. Foot; 35. Operating wheel; 36. Hole; 37. Triangular reinforcing plate; 38. Top plate; 39. Slider; 40. Slide groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-9 This invention provides a CNC bending and forming device for steel structural components of communication towers, including a bending frame 1. A drive assembly 2 is fixedly connected to the vertical side wall of the bending frame 1. An adjustable die head mechanism 3 is fixedly connected to the output end of the drive assembly 2. A forming lower die assembly 4 is fixedly connected to the bending frame 1. The forming lower die assembly 4 is located below the adjustable die head mechanism 3. A cleaning mechanism 5 is connected between the forming lower die assembly 4 and the bending frame 1. The adjustable die head mechanism 3 includes two symmetrically fixed connecting frames 6 on the drive assembly 2. A sliding plate 7 is fixedly connected between the two connecting frames 6. A sliding hole 8 is provided at the top of the bending frame 1. The sliding plate 7 passes through the bending frame 1 through the sliding hole 8. Adjusting screws 9 are rotatably connected to both sides of the sliding plate 7. A moving plate 10 is threaded onto the external thread of the adjusting screw 9. A triangular sleeve 11 is fixedly connected to the vertical side wall of the moving plate 10. A triangular insert 12 is movably inserted into the triangular sleeve 11. A connecting rod 13 is fixedly connected to one end of the triangular insert 12 outside the triangular sleeve 11. A combined die head 14 is fixedly connected between the two connecting rods 13. The combined die head 14 is located below the sliding plate 7. A support assembly 15 is fixedly connected to the bottom of the sliding plate 7.

[0021] The forming lower die assembly 4 includes a mounting groove 16 formed on the bending machine frame 1. A first electric push rod 17 is fixedly connected in the mounting groove 16. A fixing plate 18 is fixedly connected to the output end of the first electric push rod 17. A forming die base 19 is fixedly connected to the upper side wall of the fixing plate 18. The forming die base 19 corresponds to the combined die head 14. A plurality of forming grooves 20 matching the combined die head 14 are evenly formed on the upper side of the forming die base 19. The bottom of the forming die base 19 is slidably connected to the bending machine frame 1. The combined die head 14 has a polygonal prism structure, and different types of bending dies are provided on its outer peripheral side. The triangular sleeve 11 and the triangular insert plate 12 cooperate with each other to form a quick-change engagement mechanism for rotating, unlocking, locking, and positioning the combined die head 14. The lower molding die assembly 4 moves horizontally according to the rotational switching position of the combined mold head 14 to adjust the corresponding molding groove 20 to be directly below the combined mold head 14, thereby achieving coordinated alignment of the upper and lower molds.

[0022] In the above embodiment, during bending, the communication tower steel structure is placed on the forming mold base 19. The sliding plate 7 is driven downward by the driving component 2, and the sliding plate 7 drives the combined mold head 14 downward. After the combined mold head 14 contacts the communication tower steel structure, it extrudes the communication tower steel structure. Through the interaction between the combined mold head 14 and the forming groove 20 on the forming mold base 19, the communication tower steel structure can be bent into the desired shape. When different bending effects are required, the two adjusting screws 9 are rotated. By adjusting the threaded engagement between the adjusting screws 9 and the moving plate 10, the moving plate 10 is moved away from the combined mold head 14. The moving plate 10 drives the triangular sleeve 11 to disengage from the triangular insert plate 12, thereby releasing the limiting fixation of the two triangular sleeves 11 on the two triangular insert plates 12, and thus releasing the... The combination die head 14 is fixed in place. By rotating the combination die head 14, different types of dies can be adjusted to the lower position, allowing selection of different die head models according to actual bending requirements. The first electric push rod 17 adjusts the corresponding forming groove 20 to the lower position of the combination die head 14. After adjustment, the adjusting screw 9 is rotated in the opposite direction to re-insert the triangular insert plate 12 into the triangular sleeve 11, completing the reinstallation and fixing of the combination die head 14. The operation is simple and convenient, and the die head type can be quickly adjusted according to actual bending requirements. This makes the device suitable for various communication tower steel structures with different bending requirements, effectively improving the flexibility of CNC bending machine use and reducing downtime during die head adjustment, thus effectively improving the bending efficiency of the CNC bending device.

[0023] The decontamination mechanism 5 includes a booster air pump 21 fixedly connected to the vertical side wall of the bending machine frame 1. A filter plate 22 is fixedly connected to the air inlet of the booster air pump 21, and a hose 23 is fixedly connected to the air outlet of the booster air pump 21. A distribution pipe 24 is fixedly connected to the end of the hose 23 away from the booster air pump 21. Multiple nozzles 25 are fixedly connected to the distribution pipe 24. The multiple nozzles 25 are respectively fixedly connected to multiple forming grooves 20. When the bending operation is completed and the combined die head 14 is raised, the decontamination mechanism 5 coordinates the activation of the booster air pump 21 to perform high-pressure blowing on the forming grooves 20.

[0024] In the above embodiment, during use, the booster air pump 21 is started. The booster air pump 21 can draw in air and then pressurize the gas. The pressurized gas is delivered to the distribution pipe 24 through the hose 23. The distribution pipe 24 sprays out through multiple nozzles 25. The high-pressure gas is sprayed into the forming groove 20 at high speed. The high-pressure gas flows along the groove of the forming groove 20, which can clean the relatively light dirt and debris in the forming groove 20, so that the dirt and debris can be quickly removed from the forming groove 20. This allows for rapid cleaning of the forming groove 20, avoids the above-mentioned dirt and impurities from affecting the bending quality, and improves the convenience of cleaning the device.

[0025] The drive assembly 2 includes two hydraulic cylinders 26 fixedly connected to the vertical side wall of the bending frame 1. The output end of the hydraulic cylinder 26 is fixedly connected to a drive rod 27, and the lower end of the drive rod 27 is fixedly connected to the upper side of the connecting frame 6.

[0026] In the above embodiment, the two hydraulic cylinders 26 can stably drive the combined die head 14 to move up and down, thereby achieving stable bending operations.

[0027] The support assembly 15 includes a fixing groove 28 formed at the bottom of the sliding plate 7. A second electric push rod 29 is fixedly connected in the fixing groove 28. The output end of the second electric push rod 29 faces downward and is fixedly connected to a pressure plate 30. The pressure plate 30 is tightly fitted with the combined die head 14. After the triangular sleeve 11 locks the triangular insert plate 12, the support assembly 15 works together to drive the pressure plate 30 downward to provide auxiliary support and enhance the structural rigidity during the bending process.

[0028] In the above embodiment, when in use, the second electric actuator 29 is activated, and the second electric actuator 29 drives the pressure plate 30 to move downward, so that the pressure plate 30 contacts the combined die head 14, thereby supporting the combined die head 14, improving the pressure-bearing performance of the combined die head 14 when bending the steel structure, and effectively improving the bending stability.

[0029] The bottom of the forming mold base 19 is symmetrically and fixedly connected to two slide rails 31. The lower side of the slide rails 31 is fixedly connected to cylindrical guide posts 32. The bending frame 1 is symmetrically provided with two guide grooves 33. The two cylindrical guide posts 32 are slidably connected in the two guide grooves 33 respectively.

[0030] In the above embodiment, the cylindrical guide post 32 and the guide groove 33 cooperate with each other to limit and guide the forming mold base 19, thereby improving the stability of the forming mold base 19 during position adjustment and improving the stability of the forming mold base 19 during bending, thus improving the bending quality.

[0031] The bending frame 1 has four fixed feet 34 at the bottom corners, and the feet 34 are made of stainless steel.

[0032] In this embodiment, the multiple feet 34 provided enable the bottom of the entire device to be lifted off the ground, improving the waterproof performance of the bottom of the device and allowing the device to be placed on uneven ground.

[0033] The adjusting screw 9 is externally fixedly fitted with an operating wheel 35, and the operating wheel 35 has multiple hollow holes 36.

[0034] In this embodiment, rotating the operating wheel 35 can drive the adjusting screw 9 to rotate, which improves the convenience of operating the adjusting screw 9.

[0035] Two triangular reinforcing plates 37 are fixedly connected between the upper and lower side walls of the connecting frame 6 and the vertical side wall of the sliding plate 7. A top plate 38 is fixedly connected to the upper side of the triangular sleeve 11. The top plate 38 is located below the sliding plate 7. A slider 39 is fixedly connected to the upper side of the top plate 38. A groove 40 matching the slider 39 is opened on the lower side of the sliding plate 7.

[0036] In the above embodiments, the triangular reinforcing plate 37 can reinforce the connection between the connecting frame 6 and the sliding plate 7, thereby improving the stability of the connection between the connecting frame 6 and the sliding plate 7 and improving the structural stability of the device. The top plate 38 can support the triangular sleeve 11 when bending, thereby improving the pressure bearing performance of the combined mold head 14. The slider 39 and the slide groove 40 cooperate with each other to improve the stability of the moving plate 10 when it moves.

[0037] A CNC bending forming method for steel structural components of communication towers includes the following steps: S1: Unlocking step: Rotate the adjusting screw 9 to disengage the triangular sleeve 11 from the triangular insert plate 12, and unlock the combined mold head 14; S2: Coordinated adjustment step, rotate the combined mold head 14 to select the target mold head, and at the same time control the first electric push rod 17 to drive the forming mold base 19 to move, so that the corresponding forming groove 20 is aligned with the target mold head; S3: Locking and supporting steps: Rotate the adjusting screw 9 in the opposite direction to lock the combined mold head 14, and start the second electric push rod 29 to drive the pressure plate 30 to press the combined mold head 14 for auxiliary support; S4: Bending and cleaning steps. Drive component 2 moves downward to bend, and after bending, moves upward to start booster air pump 21 for blowing and cleaning.

[0038] Working principle: During bending, the communication tower steel structure is placed on the forming mold base 19. The sliding plate 7 is driven downward by the drive component 2, and the sliding plate 7 drives the combined mold head 14 downward. After the combined mold head 14 contacts the communication tower steel structure, it is squeezed. Through the cooperation between the combined mold head 14 and the forming groove 20 on the forming mold base 19, the communication tower steel structure can be bent into the desired shape. When different bending effects are required, the two adjusting screws 9 are rotated. Through the threaded engagement between the adjusting screws 9 and the moving plate 10, the moving plate 10 is moved away from the combined mold head 14. The moving plate 10 drives the triangular sleeves 11 to disengage from the triangular inserts 12, thereby releasing the limiting fixation of the two triangular sleeves 11 on the two triangular inserts 12, and thus releasing the combined mold head 14. The head 14 is fixed in a limiting position. By rotating the combined die head 14, different types of dies can be adjusted to the bottom, so that different models of dies can be selected according to the actual bending requirements. The corresponding forming groove 20 is adjusted to the bottom of the combined die head 14 by the first electric push rod 17. After the adjustment is completed, the adjusting screw 9 is rotated in the opposite direction to make the triangular insert plate 12 re-insert into the triangular sleeve 11, thus completing the reinstallation and fixing of the combined die head 14. The operation is simple and convenient. The die head type can be quickly adjusted according to the actual bending requirements. The device can be used for communication tower steel structures with various bending requirements, effectively improving the flexibility of CNC bending machine and reducing downtime when adjusting the die head, thus effectively improving the bending efficiency of CNC bending device. In use, the booster air pump 21 is started. The booster air pump 21 can draw in air and then pressurize the gas. The pressurized gas is delivered to the distribution pipe 24 through the hose 23. The distribution pipe 24 sprays out through multiple nozzles 25. The high-pressure gas is sprayed into the forming tank 20 at high speed. The high-pressure gas flows along the tank body of the forming tank 20, which can clean the relatively light dirt and debris in the forming tank 20, so that the dirt and debris can be quickly removed from the forming tank 20. This allows for rapid cleaning of the forming tank 20, avoiding the impact of the dirt and impurities on the bending quality, and improving the convenience of cleaning the device.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC bending and forming device for steel structural components of communication towers, comprising a bending frame (1), characterized in that: A drive assembly (2) is fixedly connected to the vertical side wall of the bending frame (1). An adjustable die head mechanism (3) is fixedly connected to the output end of the drive assembly (2). A forming lower die assembly (4) is fixedly connected to the bending frame (1). The forming lower die assembly (4) is located below the adjustable die head mechanism (3). A cleaning mechanism (5) is connected between the forming lower die assembly (4) and the bending frame (1). The adjustable die head mechanism (3) includes two symmetrically fixed connecting frames (6) on the drive assembly (2). A sliding plate (7) is fixedly connected between the two connecting frames (6). A sliding hole (8) is provided on the top of the bending frame (1). The sliding plate (7) passes through the bending frame (1) through the sliding hole (8). Adjusting screws (9) are rotatably connected on both the left and right sides of the sliding plate (7). A moving plate (10) is threaded on the external thread of the adjusting screw (9). A triangular sleeve (11) is fixedly connected to the vertical side wall of the moving plate (10). A triangular insert plate (12) is movably inserted into the triangular sleeve (11). A connecting rod (13) is fixedly connected to one end of the triangular insert plate (12) outside the triangular sleeve (11). A combined die head (14) is fixedly connected between the two connecting rods (13). The combined die head (14) is located below the sliding plate (7). A support assembly (15) is fixedly connected to the bottom of the sliding plate (7).

2. The CNC bending and forming device for steel structural components of communication towers according to claim 1, characterized in that: The forming lower die assembly (4) includes a mounting groove (16) opened on the bending machine frame (1). A first electric push rod (17) is fixedly connected in the mounting groove (16). A fixing plate (18) is fixedly connected to the output end of the first electric push rod (17). A forming die base (19) is fixedly connected to the side wall of the upper side of the fixing plate (18). The forming die base (19) corresponds to the combined die head (14). A plurality of forming grooves (20) matching the combined die head (14) are evenly opened on the upper side of the forming die base (19). The bottom of the forming die base (19) is slidably connected to the bending machine frame (1). The combined die head (14) is a multi-prism structure. Different types of bending dies are provided on its outer peripheral side. The triangular sleeve (11) and the triangular insert plate (12) cooperate with each other to form a quick-change engagement mechanism for rotating, unlocking and locking the combined die head (14). The lower molding die assembly (4) moves horizontally according to the rotational switching position of the combined mold head (14) to adjust the corresponding molding groove (20) to be directly below the combined mold head (14), thereby achieving coordinated alignment of the upper and lower molds.

3. The CNC bending and forming device for steel structural components of communication towers according to claim 2, characterized in that: The cleaning mechanism (5) includes a booster air pump (21) fixedly connected to the vertical side wall of the bending machine frame (1). The air inlet of the booster air pump (21) is fixedly connected to a filter plate (22), and the air outlet of the booster air pump (21) is fixedly connected to a hose (23). The end of the hose (23) away from the booster air pump (21) is fixedly connected to a distribution pipe (24). Multiple nozzles (25) are fixedly connected to the distribution pipe (24). The multiple nozzles (25) are respectively fixedly connected to multiple forming grooves (20). When the bending operation is completed and the combined die head (14) is raised, the cleaning mechanism (5) starts the booster air pump (21) in coordination to perform high-pressure blowing on the forming grooves (20).

4. A CNC bending and forming device for steel structural components of communication towers according to claim 3, characterized in that: The drive assembly (2) includes two hydraulic cylinders (26) fixedly connected to the vertical side wall of the bending frame (1). The output end of the hydraulic cylinder (26) is fixedly connected to a drive rod (27), and the lower end of the drive rod (27) is fixedly connected to the upper side of the connecting frame (6).

5. A CNC bending and forming device for steel structural components of communication towers according to claim 4, characterized in that: The support assembly (15) includes a fixing groove (28) opened at the bottom of the sliding plate (7). A second electric push rod (29) is fixedly connected in the fixing groove (28). The output end of the second electric push rod (29) faces downward and is fixedly connected to a pressure plate (30). The pressure plate (30) is tightly fitted with the combined die head (14). After the triangular sleeve (11) locks the triangular insert plate (12), the support assembly (15) works together to drive the pressure plate (30) to press down to provide auxiliary support and enhance the structural rigidity during the bending process.

6. A CNC bending and forming device for steel structural components of communication towers according to claim 5, characterized in that: The bottom of the forming mold base (19) is symmetrically fixedly connected to two slide rails (31), and the lower side of the slide rails (31) is fixedly connected to cylindrical guide columns (32). The bending frame (1) is symmetrically opened with two guide grooves (33), and the two cylindrical guide columns (32) are slidably connected in the two guide grooves (33).

7. A CNC bending and forming device for steel structural components of communication towers according to claim 6, characterized in that: The bending frame (1) has four fixed feet (34) at the bottom corners, and the feet (34) are made of stainless steel.

8. A CNC bending and forming device for steel structural components of communication towers according to claim 7, characterized in that: The adjusting screw (9) is fixedly fitted with an operating wheel (35), and the operating wheel (35) has multiple hollow holes (36).

9. A CNC bending and forming device for steel structural components of communication towers according to claim 8, characterized in that: Two triangular reinforcing plates (37) are fixedly connected between the upper and lower side walls of the connecting frame (6) and the vertical side wall of the sliding plate (7). A top plate (38) is fixedly connected to the upper side of the triangular sleeve (11). The top plate (38) is located below the sliding plate (7). A slider (39) is fixedly connected to the upper side of the top plate (38). A groove (40) matching the slider (39) is opened on the lower side of the sliding plate (7).

10. A CNC bending forming method for steel structural components of communication towers, characterized in that, Using the apparatus according to any one of claims 1-9, the steps include: S1: Unlocking step, rotate the adjusting screw (9) to disengage the triangular sleeve (11) from the triangular insert plate (12) and unlock the combined mold head (14). S2: Coordinated adjustment steps, rotate the combined mold head (14) to select the target mold head, and at the same time control the first electric push rod (17) to drive the forming mold base (19) to move, and align the corresponding forming groove (20) with the target mold head; S3: Locking and supporting steps: Rotate the adjusting screw (9) in the opposite direction to lock the combined mold head (14), and start the second electric push rod (29) to drive the pressure plate (30) to press the combined mold head (14) for auxiliary support; S4: Bending and cleaning steps, drive component (2) goes down to bend, after bending, goes up, and starts booster air pump (21) to blow and clean.

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