Cold bending machine for high-galvanized C-shaped steel

Abstract

The application discloses a cold-bending thin-wall high-galvanized C-shaped steel bending machine and belongs to the technical field of plate processing equipment, which comprises a bending machine body, the bending machine body is provided with a work platform, a first material supporting and feeding mechanism is arranged on the front wall of the work platform, and a second material supporting and feeding mechanism is arranged on the back wall of the work platform; an automatic discharging mechanism is further arranged on the discharging direction of the first material supporting and feeding mechanism; the first material supporting and feeding mechanism comprises a mounting seat, a first horizontal material supporting plate, a turnover plate and a turnover driving assembly; the second material supporting and feeding mechanism comprises a supporting frame, a second horizontal material supporting plate, a laser centering detector and an alignment driving assembly; the alignment driving assembly comprises a second driving cylinder and a vacuum adsorption plate. The galvanized layer is protected through cooperation of the front and rear double material supporting and feeding mechanisms and a flexible material supporting structure, the vacuum adsorption plate is adopted to complete non-damage centering correction and multi-section traction displacement of the plate, and the turnover type feeding, linear material pushing and automatic discharging mechanism are matched to realize automatic processing in the whole process.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing equipment, and in particular to a cold-bending machine for thin-walled, highly galvanized C-shaped steel. Background Technology

[0002] C-shaped steel is widely used in steel structure workshops, photovoltaic brackets, building purlins, and other fields. To improve the rust and corrosion resistance of the profiles, the industry generally adopts hot-dip galvanizing to form a thickened zinc layer on the surface of the steel plate. To reduce material costs and lighten the self-weight of components, thin-walled steel plates are widely used for rolling and bending. An existing Chinese utility model patent with authorization announcement number CN212704046U discloses a CNC bending machine, which includes a bending machine body and a bending device mounted on the bending machine body. The bending device includes an upper die and a matching lower die. The upper die is connected to the slider of the bending machine body, and the lower die is located below the upper die and mounted on the working platform of the bending machine body. It also includes a die-changing assembly with a first fixing bolt threaded onto it and connected to the slider of the bending machine body. The upper die is detachably connected to the die-changing assembly. This solution can effectively reduce the probability of loosening between the die-changing assembly and the slider of the bending machine body after long-term use, thus improving the bending effect.

[0003] However, existing conventional bending machines have the following obvious defects when processing high-galvanized thin-walled C-shaped steel: 1. The loading and unloading support parts use steel plates that rigidly contact the steel plates. The hard friction easily scratches and peels off the galvanized layer on the surface of the profile, causing the product's anti-corrosion performance to fail and resulting in a high defect rate; 2. The thin-walled steel plates themselves have poor rigidity and rely solely on the working platform in the middle of the bending machine for support. There is no auxiliary support before and after the plate is fed, making it prone to concave deformation and lateral bending during the feeding process, resulting in large deviations in the bending dimensions; 3. C-shaped steel forming requires multiple step-by-step bending of the plate. After each bending, the front and rear positions of the plate need to be readjusted. Traditional equipment relies on manual pushing and pulling of the plate to move it, which results in low positioning accuracy, high labor intensity, and easy damage to the galvanized plate surface when dragging manually; 4. After bending, the finished thin-walled C-shaped steel is removed manually by handling and lifting. 5. The traditional feeding structure lacks a flipping and lifting mechanism. When the thin plate is pushed in, the front end of the plate is easily stuck at the edge of the working platform, causing feeding jams and unstable feeding. In addition, manual assistance is required to flip the plate to bend different parts.

[0004] Therefore, it is necessary to provide a cold-bending machine for thin-walled, high-galvanized C-shaped steel to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention aims to solve at least one of the technical problems mentioned in the background art above, and provides a cold-bending thin-walled high-galvanized C-shaped steel bending machine. The machine achieves galvanized layer protection through a front and rear double-support feeding mechanism combined with a flexible support structure. It uses a vacuum adsorption plate to complete the non-damaging centering correction and multi-segment traction displacement of the plate. It is equipped with a flip-type feeding and straight-line pushing automatic discharge mechanism to achieve fully automated processing.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A cold-formed thin-walled, high-galvanized C-shaped steel bending machine includes a bending machine body, wherein the bending machine body is provided with a working platform for bending the sheet metal.

[0008] The front wall of the working platform is provided with a first material feeding mechanism, and the rear wall of the working platform is provided with a second material feeding mechanism; the discharge direction of the first material feeding mechanism is also provided with an automatic discharge mechanism.

[0009] The first material feeding mechanism includes a mounting base, a first horizontal material support plate, a tilting plate, and a tilting drive assembly; the mounting base is horizontally disposed on the front wall of the working platform; the first horizontal material support plate is horizontally mounted on the mounting base, and the tilting plate is disposed on both sides of the first horizontal material support plate and is driven to tilt by the tilting drive assembly.

[0010] The second material feeding mechanism includes a support frame, a second horizontal material support plate, a laser alignment detector, and an alignment drive assembly. The support frame is mounted behind the working platform, the second horizontal material support plate is mounted on the support frame, and the laser alignment detector is located on the side of the second horizontal material support plate. It is used to emit a parallel laser beam to irradiate the tail of the material to detect the lateral offset of the material in real time. The alignment drive assembly includes a second drive cylinder and a vacuum adsorption plate. The cylinder body of the second drive cylinder is fixed on the support frame, and the telescopic end of the second drive cylinder is fixedly connected to the vacuum adsorption plate. The second drive cylinder drives the vacuum adsorption plate to reciprocate along the material feeding direction.

[0011] Preferably, the first horizontal material support plate and the second horizontal material support plate have the same structure, both including a material support main plate, multiple sets of brush columns and several abutment members. The bearing surface of the material support main plate is provided with several evenly distributed grooves, and a bundle of brush columns is vertically fixed inside each groove. Each abutment member is evenly distributed on the material support main plate, and each abutment member includes a cylindrical base fixed on the material support main plate. A freely rotatable ball is embedded in the upper end of the base. The top of the ball is higher than the upper surface of the base and lower than the top plane of the brush column.

[0012] Preferably, the flipping drive assembly includes two sets of side limiting plates, an arc-shaped slider, and a first drive cylinder; the two sets of side limiting plates are respectively installed on both sides of the first horizontal material support plate; one end of the side limiting plate is connected to the mounting base, and the other side of the side limiting plate is connected to the front wall of the working platform; a sliding groove is provided in the side limiting plate, and a rollable roller is installed in the sliding groove; the arc-shaped slider is slidably installed in the sliding groove and slidably cooperates with the roller; the top end of the arc-shaped slider is connected to the flipping plate, and the middle part of the arc-shaped slider is connected to the telescopic end of the first drive cylinder.

[0013] Preferably, the automatic discharge mechanism includes a linear guide pair, a discharge push plate, a third drive cylinder, and a roller discharge platform. The linear guide pair is horizontally fixed along the length of the working platform. The linear guide pair includes a guide rail and a slider seat slidably mounted on the guide rail. The discharge push plate is vertically fixedly mounted on the slider seat. The side of the discharge push plate facing the first horizontal support plate forms a plate pushing surface. The third drive cylinder is installed at one end of the linear guide pair. The power output end of the third drive cylinder is connected to the slider seat and is used to drive the slider seat and the discharge push plate to slide linearly back and forth along the guide rail. The roller discharge platform is located outside the discharge end of the bending machine body.

[0014] Preferably, the roller discharge platform includes a frame, adjustable support feet, and multiple conveying rollers. The frame is a rectangular frame structure, and the adjustable support feet are installed at the four corners of the bottom of the frame. The multiple conveying rollers are rotatably assembled on the frame and arranged parallel to each other along the material discharge direction. The end of the first conveying roller closest to the working platform is connected to a drive motor.

[0015] Preferably, the vacuum adsorption plate has a hollow cavity and an adsorption plane. The adsorption plane is provided on one side facing the plate and has a plurality of adsorption holes communicating with the hollow cavity. One end of the hollow cavity is connected to the vacuum generator.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a cold-bending thin-walled high-galvanized C-shaped steel bending machine. By setting up two sets of independent material feeding mechanisms at the front and rear, the machine provides synchronous support for long-sized thin-walled galvanized steel sheets from the front and rear, solving the problem of thin sheets being easily bent and deformed under unilateral stress, and ensuring the accuracy of bending dimensions.

[0018] 2. The material support plate of the cold-bending thin-walled high-galvanized C-shaped steel bending machine of the present invention adopts a composite flexible support structure of brush columns and ball bearings. The soft contact of the brush isolates the hard friction of metal, and the ball bearings help prevent the thin plate from collapsing, thus avoiding scratches and peeling of the high-galvanized layer from the source and greatly reducing the product defect rate.

[0019] 3. The cold-formed thin-walled high-galvanized C-shaped steel bending machine of the present invention uses a laser centering detector at the rear end in conjunction with a cylinder-driven vacuum adsorption plate. The laser detects the offset of the plate in real time, and the vacuum negative pressure surface adsorption completes the centering correction and multi-segment traction feeding, replacing manual calibration. It has high positioning accuracy and strong processing consistency, and can effectively improve the processing efficiency of the production line.

[0020] 4. The present invention provides a cold-bending thin-walled high-galvanized C-shaped steel bending machine, which can lift the plate and feed it smoothly by setting an arc-shaped slider-type flip-drive component at the front end, preventing the thin plate from getting stuck and making the feeding process more stable and smooth.

[0021] 5. The present invention provides a cold-bending thin-walled high-galvanized C-shaped steel bending machine equipped with a linear guide rail type automatic feeding mechanism and a motor-driven roller feeding table. After bending, the finished product is automatically pushed and conveyed, eliminating manual loading and unloading, reducing labor intensity, and is suitable for automated continuous processing production lines.

[0022] 6. The present invention provides a cold-bending thin-walled high-galvanized C-shaped steel bending machine. The overall structure adopts standard industrial accessories such as cylinders, guide rails, laser detectors, vacuum generators, and rollers. The structure is simple and reliable, the equipment modification cost is low, and it is suitable for processing various specifications of high-galvanized thin-walled C-shaped steel. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a cold-bending thin-walled high-galvanized C-shaped steel bending machine according to the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the first material feeding mechanism and the second material feeding mechanism of the present invention;

[0025] Figure 3 This is a schematic diagram of the alignment driving component of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the roller discharge platform of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the first horizontal material support plate and the second horizontal material support plate of the present invention;

[0028] The components in the attached diagram are labeled as follows: 1. Bending machine body; 2. Working platform; 3. Mounting base; 4. First horizontal material support plate; 5. Tilting plate; 6. Support frame; 7. Second horizontal material support plate; 8. Laser centering detector; 9. Second drive cylinder; 10. Vacuum adsorption plate; 101. Hollow cavity; 102. Adsorption plane; 103. Adsorption hole; 104. Vacuum generator; 11. Material support main plate; 12. Brush column; 13. Groove; 14. Cylindrical base; 15. Ball bearing; 16. Side limiting plate; 17. Arc-shaped slider; 18. First drive cylinder; 19. Slide groove; 20. Roller; 21. Linear guide rail pair; 22. Discharge push plate; 23. Third drive cylinder; 24. Roller discharge platform; 25. Guide rail; 26. Slider seat; 27. Machine frame; 28. Adjustable support foot; 29. ​​Conveying roller. Detailed Implementation

[0029] 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.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention from the specific circumstances.

[0031] Please see Figures 1-5 A cold-formed thin-walled high-galvanized C-shaped steel bending machine includes a bending machine body 1. The bending machine body 1 is provided with a working platform 2 for bending the sheet metal. The working platform 2 is divided into a front feeding side and a rear tail side along the feeding direction of the sheet metal.

[0032] The front wall of the working platform 2 is provided with a first material feeding mechanism, and the rear wall of the working platform 2 is provided with a second material feeding mechanism; the discharge direction of the first material feeding mechanism is also provided with an automatic discharge mechanism.

[0033] The first material feeding mechanism includes a mounting base 3, a first horizontal material support plate 4, a tilting plate 5, and a tilting drive assembly; the mounting base 3 is horizontally set on the front wall of the working platform 2; the first horizontal material support plate 4 is horizontally installed on the mounting base 3, and the tilting plate 5 is set on the left and right sides of the first horizontal material support plate 4, and is synchronously driven to tilt and lift the material through the tilting drive assembly.

[0034] Preferably, the flipping drive assembly includes two sets of side limiting plates 16, an arc-shaped slider 17, and a first drive cylinder 18; the two sets of side limiting plates 16 are respectively installed on both sides of the first horizontal material support plate 4; one end of the side limiting plate 16 is connected to the mounting base 3, and the other side of the side limiting plate 16 is connected to the front wall of the working platform 2; a sliding groove 19 is provided in the side limiting plate 16, and a rolling roller 20 is installed in the sliding groove 19; the arc-shaped slider 17 is slidably installed in the sliding groove 19 and slides in cooperation with the roller 20; the top of the arc-shaped slider 17 is connected to the flipping plate 5, and the middle part of the arc-shaped slider 17 is connected to the telescopic end of the first drive cylinder 18; the first drive cylinder 18 is used to drive the arc-shaped slider 17 to slide along the sliding groove 19, and link the flipping plate 5 to complete the lifting and flattening of the material.

[0035] The second material feeding mechanism includes a support frame 6, a second horizontal material support plate 7, a laser alignment detector 8, and an alignment drive assembly. The support frame 6 is mounted at the rear of the work platform 2. The second horizontal material support plate 7 is fixedly installed on the support frame 6. The first horizontal material support plate 4 and the second horizontal material support plate 7 are located on the same horizontal plane. The laser alignment detector 8 is located on the side of the second horizontal material support plate 7 and is used to continuously emit parallel laser beams to irradiate the width area of ​​the tail of the material to detect the lateral offset of the material in real time. The alignment drive assembly includes a second drive cylinder 9 and a vacuum adsorption plate 10. The cylinder body of the second drive cylinder 9 is fixed on the support frame 6. The telescopic end of the second drive cylinder 9 is connected to the vacuum adsorption plate 10. The second drive cylinder 9 drives the vacuum adsorption plate 10 to reciprocate along the material feeding direction to correct the position of the material.

[0036] The vacuum adsorption plate 10 has a hollow cavity 101 and an adsorption plane 102. The adsorption plane 102 is provided on the side facing the plate and has several adsorption holes 103 that communicate with the hollow cavity 101. One end of the hollow cavity 101 is connected to a vacuum generator 104. When the vacuum generator 104 is working, a negative pressure is formed inside the cavity. The adsorption holes 103 are tightly attached to the tail surface of the galvanized plate, and the large-area negative pressure is used to achieve non-damaging clamping and fixing.

[0037] Preferably, the first horizontal support plate 4 and the second horizontal support plate 7 have the same structure, both including a support main plate 11, multiple sets of brush columns 12 and several abutment members. The support main plate 11 has several evenly distributed grooves 13 on its bearing surface. Each groove 13 has a bundle of brush columns 12 vertically fixed inside it. The tops of all the brush columns 12 are flush to form a flexible bearing plane to support the plate. Each abutment member is evenly distributed on the support main plate 11. The abutment member includes a cylindrical base 14 fixed on the support main plate 11. The upper end of the base is fitted with a freely rotatable ball bearing 15. The top of the ball bearing 15 is higher than the upper end of the base and lower than the top plane of the brush column 12. After the plate is placed, it is flexibly supported by the brush columns 12. The ball bearing 15 provides auxiliary support below the middle of the thin plate to prevent the thin-walled plate from being dented by pressure and to prevent the metal from scratching the galvanized layer by hard contact.

[0038] Preferably, the automatic discharge mechanism includes a linear guide pair 21, a discharge pusher plate 22, a third drive cylinder 23, and a roller discharge platform 24. The linear guide pair 21 is horizontally fixed along the length of the working platform 2. The linear guide pair 21 includes a guide rail 25 and a slider seat 26 slidably mounted on the guide rail 25. The discharge pusher plate 22 is vertically fixedly mounted on the slider seat 26. The side of the discharge pusher plate 22 facing the first horizontal support plate 4 forms a plate pushing surface. The third drive cylinder 23 is installed at one end of the linear guide pair 21. The power output end of the third drive cylinder 23 is connected to the slider seat 26 and is used to drive the slider seat 26 and the discharge pusher plate 22 to slide linearly back and forth along the guide rail 25, pushing the bent C-shaped steel to the roller discharge platform 24. The roller discharge platform 24 is located outside the discharge end of the bending machine body 1 and receives the finished profile pushed by the discharge pusher plate 22.

[0039] Preferably, the roller discharge platform 24 includes a frame 27, adjustable support feet 28, and multiple conveying rollers 29. The frame 27 is a rectangular frame structure, and adjustable support feet 28 are installed at the four corners of the bottom of the frame 27. The adjustable support feet 28 adopt an adjusting bolt structure, which can adjust the overall level of the discharge platform. The multiple conveying rollers 29 are rotatably assembled on the frame 27 and arranged parallel to each other along the discharge direction of the plate. The end of the first conveying roller 29 closest to the working platform 2 is connected to a drive motor. The motor drives the roller to rotate and automatically conveys the formed C-shaped steel outward.

[0040] This bending machine is also equipped with a controller, which is electrically connected to the laser alignment detector 8, the first drive cylinder 18, the second drive cylinder 9, the third drive cylinder 23, and the vacuum generator 104. Based on the offset detection signal of the laser alignment detector 8, the controller coordinates the various mechanisms to complete the entire process of sheet metal correction, segmented traction bending, and automatic material discharge. The hardware selection of the controller and the drive control circuit are well-known technologies in the industry and will not be elaborated on in this article.

[0041] The working process of the cold-bending thin-walled high-galvanized C-shaped steel bending machine of the present invention is as follows:

[0042] During operation, the operator places the cold-bent thin-walled high-galvanized sheet to be bent on the first horizontal support plate 4, pushes the sheet to align the first bending area of ​​the sheet and sends it into the bending station of the bending machine working platform 2; then the second drive cylinder 9 drives the vacuum adsorption plate 10 to move forward toward the working platform 2, limit and fit the tail of the sheet, and complete the center alignment and positioning of the tail of the sheet.

[0043] The first drive cylinder 18 drives the arc-shaped slider 17 to slide along the slide groove 19, which in turn lifts the front end of the plate upwards by the flip plates 5 on both sides, supports and limits the plate, and assists the bending die to press down. The die presses down to complete the first bending process.

[0044] After bending is completed, the bending die is lifted and reset, and the first drive cylinder 18 drives the flipping plate 5 to fall back and flatten the plate. The vacuum generator 104 is started, and the vacuum adsorption plate 10 opens the negative pressure adsorption, adhering to the side of the tail of the plate to achieve damage-free fixation. The second drive cylinder 9 drives the vacuum adsorption plate 10 to carry the plate and move it backward slightly to adjust the bending position of the plate. The second side bending and the end flange inward rolling bending of the plate are completed in sequence, and finally the complete C-shaped steel is formed.

[0045] The entire processing of this invention is flexibly supported by the brush column 12 and the ball bearing 15, which avoids friction and scratches on the surface of the high galvanized sheet and pressure dents on the surface of the thin-walled sheet. Multiple bending processes are completed by the vacuum adsorption plate 10 for clamping and displacement, without the need for manual movement of the sheet, resulting in high positioning accuracy and good processing consistency.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications and substitutions do not cause the corresponding technical solutions to depart from the protection scope defined by the claims of the present invention.

Claims

1. A cold-bending thin-walled high-galvanized C-shaped steel bending machine, comprising a bending machine body (1), wherein the bending machine body (1) is provided with a working platform (2) for bending the sheet metal, characterized in that: The front wall of the working platform (2) is provided with a first material feeding mechanism, and the rear wall of the working platform (2) is provided with a second material feeding mechanism; the discharge direction of the first material feeding mechanism is also provided with an automatic discharge mechanism. The first material feeding mechanism includes a mounting base (3), a first horizontal material support plate (4), a flipping plate (5), and a flipping drive assembly; the mounting base (3) is horizontally arranged on the front wall of the working platform (2); the first horizontal material support plate (4) is horizontally installed on the mounting base (3), and the flipping plate (5) is arranged on both sides of the first horizontal material support plate (4) and is driven to flip by the flipping drive assembly; The second material feeding mechanism includes a support frame (6), a second horizontal material support plate (7), a laser alignment detector (8), and an alignment drive assembly. The support frame (6) is mounted on the rear of the working platform (2), the second horizontal material support plate (7) is mounted on the support frame (6), and the laser alignment detector (8) is located on the side of the second horizontal material support plate (7) to emit a parallel laser beam to irradiate the tail of the plate to detect the lateral offset of the plate in real time. The alignment drive assembly includes a second drive cylinder (9) and a vacuum adsorption plate (10). The cylinder body of the second drive cylinder (9) is fixed on the support frame (6), and the telescopic end of the second drive cylinder (9) is fixedly connected to the vacuum adsorption plate (10). The second drive cylinder (9) drives the vacuum adsorption plate (10) to reciprocate along the feeding direction of the plate.

2. The cold-bending thin-walled high-galvanized C-shaped steel bending machine according to claim 1, characterized in that: The first horizontal material support plate (4) and the second horizontal material support plate (7) have the same structure, both including a material support main plate (11), multiple sets of brush columns (12) and several abutment members. The material support main plate (11) has several evenly distributed grooves (13) on its bearing surface. Each groove (13) has a bundle of brush columns (12) vertically fixed inside. Each abutment member is evenly distributed on the material support main plate (11). The abutment member includes a cylindrical base (14) fixed on the material support main plate (11). The upper end of the base is fitted with a freely rotatable ball (15). The top of the ball (15) is higher than the upper surface of the base and lower than the top plane of the brush column (12).

3. The cold-bending machine for thin-walled, highly galvanized C-shaped steel according to claim 1, characterized in that: The flipping drive assembly includes two sets of side limiting plates (16), an arc-shaped slider (17), and a first drive cylinder (18); the two sets of side limiting plates (16) are respectively installed on both sides of the first horizontal material support plate (4); one end of the side limiting plate (16) is connected to the mounting base (3), and the other side of the side limiting plate (16) is connected to the front wall of the working platform (2); a sliding groove (19) is provided in the side limiting plate (16), and a rolling roller (20) is installed in the sliding groove (19); the arc-shaped slider (17) is slidably installed in the sliding groove (19) and slidably cooperates with the roller (20); the top of the arc-shaped slider (17) is connected to the flipping plate (5), and the middle part of the arc-shaped slider (17) is connected to the telescopic end of the first drive cylinder (18).

4. The cold-bending thin-walled high-galvanized C-shaped steel bending machine according to claim 1, characterized in that: The automatic discharge mechanism includes a linear guide pair (21), a discharge push plate (22), a third drive cylinder (23), and a roller discharge platform (24). The linear guide pair (21) is horizontally fixed along the length of the working platform (2). The linear guide pair (21) includes a guide rail (25) and a slider seat (26) slidably mounted on the guide rail (25). The discharge push plate (22) is vertically fixedly mounted on the slider seat (26). The discharge push plate (22) forms a plate pushing surface on the side facing the first horizontal support plate (4). The third drive cylinder (23) is installed at one end of the linear guide pair (21). The power output end of the third drive cylinder (23) is connected to the slider seat (26) and is used to drive the slider seat (26) and the discharge push plate (22) to slide linearly back and forth along the guide rail (25). The roller discharge platform (24) is located outside the discharge end of the bending machine body (1).

5. A cold-bending thin-walled high-galvanized C-shaped steel bending machine according to claim 4, characterized in that: The roller discharge platform (24) includes a frame (27), adjustable support feet (28), and multiple conveying rollers (29). The frame (27) is a rectangular frame structure. The adjustable support feet (28) are installed at the four corners of the bottom of the frame (27). The multiple conveying rollers (29) are rotatably assembled on the frame (27) and arranged parallel to each other along the material discharge direction. The end of the first conveying roller (29) near the working platform (2) is connected to a drive motor.

6. The cold-bending machine for thin-walled, highly galvanized C-shaped steel according to claim 1, characterized in that: The vacuum adsorption plate (10) has a hollow cavity (101) and an adsorption plane (102). The adsorption plane (102) is provided with a plurality of adsorption holes (103) communicating with the hollow cavity (101) on one side facing the plate. One end of the hollow cavity (101) is connected to the vacuum generator (104).

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