An angle steel production line

Abstract

The application relates to the technical field of angle steel production, in particular to an angle steel production line, which is composed of a feeding unit one, a feeding unit two, a punching and cutting mechanism and a feeding guide frame, the punching and cutting mechanism is arranged between the feeding unit one and the feeding unit two, the feeding guide frame penetrates through the punching and cutting mechanism, the outside of the frame is provided with a protection device matched with the guide wheel, the protection device is composed of a mounting frame, a transmission structure, a connecting arm, an abutting component and a pressure increasing structure, wherein the connecting arm is connected with the transmission structure and the abutting component respectively. The angle steel production line can offset the inertial slip and elastic vibration of the angle steel by rigid force, firmly fix the angle steel on the feeding guide frame, limit the overshoot problem when high-speed feeding stops, ensure the absolute precision of the punching position and the cutting length, and greatly improve the product qualification rate.

Description

Technical Field

[0001] This application relates to the field of angle steel production technology, and in particular to an angle steel production line. Background Technology

[0002] Angle steel, as a common structural profile, is widely used in various steel structure fields such as construction, bridges, power towers, and mechanical supports. In the processing of angle steel, it is usually necessary to first cut it according to design requirements.

[0003] During production, the feeding system is typically driven by a servo motor or a variable frequency motor. Through friction wheels or a rack and pinion mechanism, it clamps the angle steel and precisely conveys it to the processing station according to a preset length. In the control system, the PLC receives feedback signals from the rotary encoder or the servo motor itself to achieve fixed-length feeding control.

[0004] However, although existing technologies can achieve high precision during the uniform speed phase of the feeding process, they lack a mechanical limit function that is synchronized with and responds instantaneously to the feeding stop action at the moment of high-speed feeding. This is because angle steel has significant inertia during high-speed operation. Even after the feeding drive motor receives the stop command and completes braking, the angle steel itself will still slide forward a short distance due to inertia. Simultaneously, the minute gaps existing in the entire transmission chain will be released at the instant of drive direction switching, causing the end position of the angle steel to exceed the theoretically set value, resulting in overshoot. Therefore, an angle steel production line is proposed to solve the problems mentioned above. Summary of the Invention

[0005] In view of the shortcomings of the prior art, and to avoid over-bending of angle steel, this application provides an angle steel production line with advantages such as anti-over-bending and good production effect, thus solving the problems described above.

[0006] This application provides an angle steel production line, which adopts the following technical solution:

[0007] An angle steel production line includes a material conveying unit 1, a material conveying unit 2, a punching and cutting mechanism, and a material conveying guide. The punching and cutting mechanism is disposed between the material conveying unit 1 and the material conveying unit 2, and the material conveying guide passes through the punching and cutting mechanism.

[0008] The punching and cutting mechanism includes a base, which is fixed to the outer wall of the material conveying guide. A frame is fixed to the top side of the base. A punching and cutting structure for angle steel processing is provided on the frame. A guide wheel is provided on one side of the frame, and a connecting shaft is installed at the end of the guide wheel.

[0009] The frame is externally equipped with a protective device that cooperates with the guide wheel. The protective device consists of a mounting frame, a transmission structure, a connecting arm, a contact assembly, and a pressurizing structure. The connecting arm is connected to the transmission structure and the contact assembly, and the pressurizing structure cooperates with the transmission structure. The pressurizing structure is connected to the contact assembly.

[0010] The transmission structure includes a transmission main shaft, a centrifugal seat, a rotor and a sleeve are arranged outside the transmission main shaft, the rotor is located inside the centrifugal seat and a centrifugal block is arranged outside the rotor, an elastic guide shaft is installed between the rotor and the centrifugal block, a connecting rod is hinged between the centrifugal block and the sleeve, and a transmission component is arranged between the end of the transmission main shaft and the connecting shaft.

[0011] The sleeve is located above the rotor, the inner side of the rotor is fixed to the outer surface of the transmission main shaft, a pre-tightening spring is rotatably installed between the sleeve and the rotor, and an eccentric block connected to the pressurization structure is installed on the bottom side of the centrifugal seat.

[0012] The abutment assembly includes two abutment blocks, each with a connecting seat welded to its top side. A horizontal plate is hinged between the two connecting seats, and the two ends of the connecting arm are respectively connected to the horizontal plate and the outer wall of the sleeve.

[0013] Optionally: The two abutting blocks are distributed one after the other, and the abutting blocks connected to the pressurizing structure have suction holes inside.

[0014] Optionally, both of the abutment blocks are adapted to the shape of the angle steel, and the bottom side of the other abutment block is provided with an anti-slip pad.

[0015] Optionally: The pressurization structure includes a pressurization cylinder and a filter cylinder fixed to the outer wall of the mounting frame. The pressurization cylinder has a piston extending outward therefrom inside. A mating block is fixed to the end of the piston. The mating block abuts against the eccentric block. A check valve is provided on the bottom side of the pressurization cylinder. The filter cylinder is connected to one of the mating blocks.

[0016] Optionally: A return spring is installed between the outer wall of the booster cylinder and the outer surface of the piston; a filter plate is fixed inside the filter cylinder by bolts; a connecting pipe one and a connecting pipe two are fixed outside the filter cylinder respectively; the end of the connecting pipe one is connected to the flange of the check valve, and the connecting pipe two is connected to the mating block with suction holes.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This invention can use rigid force to counteract the inertial slippage and elastic vibration of angle steel, firmly fixing it on the material conveying guide, which solves the over-rushing problem when high-speed feeding stops, ensures the absolute accuracy of punching position and cutting length, and greatly improves the product qualification rate.

[0019] 2. This invention continuously removes iron filings and dust from the V-groove of the angle steel before it reaches the processing position, achieving online automatic cleaning. This avoids impurities from scratching the workpiece surface and prevents iron filings from affecting the punching and cutting quality. At the same time, it reduces abnormal wear of the mold and significantly extends the service life of the mold in the punching and cutting structure.

[0020] 3. This invention, through the design of functionally separated abutment blocks, and by using a horizontal plate as a lever with its fulcrum at the hinge point in the middle, allows the connecting arm to drive the horizontal plate at only one point, thereby synchronously and in reverse controlling the movement of the two abutment blocks. This converts continuous rotary input into two linear outputs that are coordinated in time and function, achieving a working mode of cleaning during movement and locking when stopped, effectively improving the conveying level, processing accuracy and product yield of the production line.

[0021] 4. In this invention, the guide wheel is connected to the subsequent transmission structure, which not only enables the guide wheel to maintain stable operation when the angle steel moves, further ensuring the accuracy of angle steel conveying, reducing problems such as deviation and jamming during the conveying process, but also allows the angle steel to accurately reach the appropriate position of the punching and cutting mechanism, laying the foundation for subsequent high-quality processing, improving the first-pass yield of products, and reducing the scrap rate caused by inaccurate conveying. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this application;

[0023] Figure 2 This is a schematic diagram of the punching and cutting mechanism of this application;

[0024] Figure 3 This is a schematic diagram of the structure of the device protected by this application;

[0025] Figure 4 This application Figure 3 A magnified structural diagram of structure A is shown below;

[0026] Figure 5 This is a schematic diagram of the transmission structure of this application;

[0027] Figure 6 This is a schematic diagram of the structure of the abutment component in this application;

[0028] Figure 7 This is a cross-sectional view of the pressurization structure of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] Angle steel production line; 11. Conveying unit one; 12. Conveying unit two; 13. Punching and cutting mechanism; 131. Machine base; 132. Machine frame; 133. Punching and cutting structure; 134. Guide wheel; 135. Connecting shaft; 14. Conveying guide frame; 2. Protective equipment; 3. Mounting frame; 4. Transmission structure; 41. Transmission main shaft; 42. Centrifugal seat; 43. Rotor; 44. Transmission component; 45. Centrifugal block; 46. Spring 47. Guide shaft; 48. Sleeve; 49. Connecting rod; 40. Preload spring; 410. Eccentric block; 5. Connecting arm; 6. Abutment assembly; 61. Abutment block; 62. Connecting seat; 63. Horizontal plate; 64. Suction hole; 75. Pressure boosting structure; 76. Pressure boosting cylinder; 77. Piston; 78. Mating block; 79. Return spring; 70. Filter cylinder; 71. Check valve; 72. Connecting pipe one; 73. Filter plate; 74. Connecting pipe two. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0032] Example 1, such as Figure 1 and Figure 2 As shown, this is the first embodiment of the present invention. This embodiment provides an angle steel production line, which includes an angle steel production line 1 consisting of a first conveying unit 11, a second conveying unit 12, a punching and cutting mechanism 13, and a conveying guide 14. The punching and cutting mechanism 13 is disposed between the first conveying unit 11 and the second conveying unit 12, and the conveying guide 14 passes through the punching and cutting mechanism 13.

[0033] Example 2, as Figures 3-7 As shown, this is the second embodiment of the present invention, which differs from the first embodiment in that it provides a punching and cutting mechanism for an angle steel production line. The punching and cutting mechanism 13 includes a base 131, which is fixed to the outer wall of a material conveying guide 14. A frame 132 is fixed to the top side of the base 131. A punching and cutting structure 133 for processing angle steel is provided on the frame 132. A guide wheel 134 is provided on one side of the frame 132, and a connecting shaft 135 is installed at the end of the guide wheel 134. Specifically, a protective device 2 that cooperates with the guide wheel 134 is provided on the outside of the frame 132. In use, the angle steel is first conveyed to the punching and cutting mechanism 13 area through the conveying unit 11. At this time, the conveying guide 14 guides and supports the angle steel to ensure that the angle steel moves along the predetermined path. The guide wheel 134 plays an auxiliary guiding role in the conveying process of the angle steel. The connecting shaft 135 at its end connects the guide wheel 134 to the subsequent transmission structure 4, so that the guide wheel 134 can maintain stable operation when the angle steel moves, further ensuring the accuracy of the angle steel conveying.

[0034] It should be noted that the protective device 2 consists of a mounting frame 3, a transmission structure 4, a connecting arm 5, an abutment component 6, and a pressure boosting structure 7. The connecting arm 5 is connected to the transmission structure 4 and the abutment component 6 respectively, and the pressure boosting structure 7 works in conjunction with the transmission structure 4. The pressure boosting structure 7 is connected to the abutment component 6. Specifically, when the guide wheel 134 rotates with the angle steel being conveyed, it is in a non-interference open state. When the guide wheel 134 stops rotating, it can automatically and instantly switch to a locked state to limit the angle steel.

[0035] The transmission structure 4 includes a transmission main shaft 41. A centrifugal seat 42, a rotor 43, and a sleeve 47 are arranged outside the transmission main shaft 41. The rotor 43 is located inside the centrifugal seat 42, and a centrifugal block 45 is arranged outside the rotor 43. An elastic guide shaft 46 is installed between the rotor 43 and the centrifugal block 45. A connecting rod 48 is hinged between the centrifugal block 45 and the sleeve 47. Specifically, the elastic guide shaft 46 consists of a guide rod and a spring. One end of the guide rod is fixed to the centrifugal block 45, and the other end extends into the rotor 43. The spring is installed between the centrifugal block 45 and the rotor 43. When the guide wheel 134 starts to rotate, the centrifugal force is small at a low speed. At this time, the spring is not fully compressed, and the throwing out of the centrifugal block 45 is a gradual process rather than an instantaneous violent impact. This avoids rigid impact during the start-up of the mechanism and reduces noise and wear. Similarly, when stopping, the spring helps the centrifugal block 45 return to its original position more smoothly. Moreover, at abnormally high speeds, the spring's travel limit can play a certain overload protection role, preventing excessive centrifugal force from damaging the connecting rod 48 or other components. Friction pads are installed on the outer surface of the centrifugal block 45 to provide transmission stability.

[0036] A transmission component 44 is provided between the end of the transmission main shaft 41 and the connecting shaft 135. The transmission component 44 is composed of a worm gear or two meshing bevel gears. Specifically, the sleeve 47 is located above the rotor 43 and is composed of two hollow sleeves that are rotatably connected. In this embodiment, the inner side of the rotor 43 is fixed to the outer surface of the transmission main shaft 41. A preload spring 49 is rotatably installed between the sleeve 47 and the rotor 43. An eccentric block 410 connected to the pressurizing structure 7 is installed on the bottom side of the centrifugal seat 42. It should be noted that in this embodiment, the number of centrifugal blocks 45, elastic guide shafts 46, and connecting rods 48 is at least two. In addition, by adjusting the preload force of the preload spring 49, the critical speed at which the centrifugal block 45 starts to move and the clamping force acting on the abutment block 61 can be precisely controlled, so that the equipment can be adapted to different production cycle feeding speeds and different specifications of angle steel.

[0037] In this embodiment, the rotation of the guide wheel 134 is driven by the transmission component 44 to drive the transmission main shaft 41. When the transmission main shaft 41 rotates, the rotor 43 fixed on it rotates accordingly. Under the action of centrifugal force, the centrifugal block 45 on the rotor 43 overcomes the tension of the pre-tightening spring 49 and is thrown outward. The centrifugal block 45 expands outward and abuts against the inner side of the user centrifugal seat 42, causing the centrifugal seat 42 to rotate. The rotation of the centrifugal seat 42 drives the eccentric block 410, thereby realizing the linkage and cooperation between the abutment component 6 and the pressurization structure 7.

[0038] Furthermore, during the conveying process, the guide wheel 134 rotates against the angle steel. Its rotation is transmitted to the transmission main shaft 41 through the connecting shaft 135 and the transmission component 44, so that the entire transmission structure 4 operates synchronously with the feeding speed. The synchronous design avoids problems such as angle steel stretching, compression or accumulation caused by mismatch between transmission and feeding speed, ensuring the stability and consistency of angle steel during processing and improving processing accuracy and efficiency.

[0039] In addition, the guide wheel 134 is connected to the subsequent transmission structure 4, which not only enables the guide wheel 134 to maintain stable operation when the angle steel moves, further ensuring the accuracy of the angle steel conveying, reducing problems such as deviation and jamming of the angle steel during the conveying process, but also allows the angle steel to accurately reach the appropriate position of the punching and cutting mechanism 13, laying the foundation for subsequent high-quality processing, improving the first-pass yield of the product, and reducing the scrap rate caused by inaccurate conveying.

[0040] The abutment assembly 6 includes two abutment blocks 61. Each abutment block 61 has a connecting seat 62 welded to its top side. A horizontal plate 63 is hinged between the two connecting seats 62. The two ends of the connecting arm 5 are connected to the horizontal plate 63 and the outer wall of the sleeve 47, respectively. The two abutment blocks 61 are distributed front to back, and each abutment block 61 connected to the pressurizing structure 7 has a suction hole 64 inside. Specifically, the middle of the horizontal plate 63 is hinged to the outer wall of the mounting frame 3, utilizing the lever principle for precise distribution of force and motion. In use, the horizontal plate 63 acts as a lever, with its fulcrum at the hinge point in the middle. The connecting arm 5... The horizontal plate 63 can be driven at one point to control the movement of the two abutment blocks 61 synchronously and in reverse. When the guide wheel 134 stops rotating, the pre-tightening spring 49 in the transmission structure 4 restores its deformation, drives the sleeve 47 to move upward and cooperates with the connecting arm 5, so that the front end of the horizontal plate 63 moves downward and the rear end tilts up. Then the front abutment block 61 presses against the angle steel and firmly fixes it on the material conveying guide frame 14, realizing instantaneous limiting and preventing the angle steel from overshooting. The abutment method can quickly and accurately fix the angle steel, ensuring the stability of the angle steel position during punching and cutting operations, and improving the safety and reliability of processing.

[0041] It should be noted that the shapes of both abutment blocks 61 are adapted to the shape of the angle steel to ensure uniform and stable force during clamping. Furthermore, the bottom side of the other abutment block 61 is embedded with an anti-slip pad, such as polyurethane or engineering plastic, to provide sufficient friction while preventing scratches on the angle steel surface. In this embodiment, during feeding, one abutment block 61 presses down for cleaning, while the other lifts to avoid friction. When processing stops, the cleaning abutment block 61 lifts up, and the locking abutment block 61 presses down for clamping.

[0042] Furthermore, the shapes of the two abutment blocks 61 are adapted to the shape of the angle steel. For the abutment blocks 61 used for cleaning, the adapted shape can reduce gaps, prevent dust from escaping, and improve cleaning efficiency. For the abutment blocks 61 used for locking, the adapted shape ensures that the clamping force is evenly applied to the two inner surfaces of the angle steel, avoiding stress concentration and preventing the angle steel from deforming or deflecting during clamping, thereby ensuring accurate and stable positioning.

[0043] The pressurization structure 7 includes a pressurization cylinder 71 and a filter cylinder 75 fixed to the outer wall of the mounting bracket 3. A piston 72 extends outward from the inside of the pressurization cylinder 71, and a return spring 74 is installed between the outer wall of the pressurization cylinder 71 and the outer surface of the piston 72. A mating block 73 is fixed to the end of the piston 72, abutting against an eccentric block 410. A check valve 76 is located on the bottom side of the pressurization cylinder 71. The filter cylinder 75 is connected to one of the mating blocks 73. During use, the check valve 76 plays a crucial role. When the piston 72 compresses air or liquid into the pressurization cylinder 71, the check valve 76 allows unidirectional flow of the medium, ensuring that the pressurized pressure can be stably output to subsequent structures. When the piston 72 moves in the reverse direction, the check valve 76 automatically closes, preventing the medium from flowing back into the pressurization cylinder 71, thereby maintaining pressure stability within the pressurization cylinder 71. This design avoids processing instability caused by pressure fluctuations and improves the reliability and stability of the pressurization structure 7.

[0044] To achieve filtration, a filter plate 78 is bolted inside the filter cylinder 75. A connecting pipe 77 and a connecting pipe 79 are fixed to the outside of the filter cylinder 75. The end of the connecting pipe 77 is connected to the flange of the check valve 76, and the connecting pipe 79 is connected to the mating block 73 with a suction hole 64. The installation of the filter plate 78 achieves the filtration of the medium. During the medium flow, the filter plate 78 can intercept impurities and particles in the medium, preventing these impurities from entering the subsequent pressurization structure 7 and causing problems such as component wear and blockage. For example, if the medium contains impurities such as iron filings, entering the pressurization cylinder 71 may affect the smooth movement of the piston 72, or even damage the piston 72 and the inner wall of the pressurization cylinder 71. The filtration by the filter cylinder 75 ensures the purity of the medium, extends the service life of the equipment, and reduces maintenance costs.

[0045] In this embodiment, the centrifugal block 45 expands outward and abuts against the inner side of the centrifugal seat 42, causing the centrifugal seat 42 to rotate. The rotation of the centrifugal seat 42 causes the eccentric block 410 to drive the piston 72 to reciprocate through the mating block 73. This, in turn, cooperates with the opening and closing of the check valve 76, so that the abutting block 61 of the suction hole 64 can generate a dust suction function, sucking away iron filings and dust in the V-groove of the angle steel through the suction hole 64.

[0046] Combined with appendix Figures 1-7 The working principle of the above embodiments is as follows:

[0047] Angle steel is first conveyed to the punching and cutting mechanism 13 area through the conveying unit 11. At this time, the conveying guide 14 guides and supports the angle steel to ensure that the angle steel moves along the predetermined path. The guide wheel 134 plays an auxiliary guiding role in the conveying process of the angle steel. The connecting shaft 135 at its end connects the guide wheel 134 to the subsequent transmission structure 4, so that the guide wheel 134 can maintain stable operation when the angle steel moves, further ensuring the accuracy of the angle steel conveying. When the angle steel reaches the appropriate position of the punching and cutting mechanism 13, the punching and cutting structure 133 set on the frame 132 starts to work, punching and cutting the angle steel to complete the processing of the angle steel.

[0048] During the conveying process, the guide wheel 134 rotates by abutting against the angle steel. The rotation of the guide wheel 134 is transmitted to the transmission main shaft 41 through the connecting shaft 135 and the transmission component 44, so that the entire transmission structure 4 runs synchronously with the feeding speed.

[0049] When the drive shaft 41 rotates, the rotor 43 fixed on it rotates accordingly. Under the action of centrifugal force, the centrifugal block 45 on the rotor 43 overcomes the tension of the pre-tightening spring 49 and is thrown outward. The centrifugal block 45 pulls the sleeve 47 through the connecting rod 48, so that it overcomes the torque of the pre-tightening spring 49 and rotates at an angle relative to the rotor 43. The rotation of the sleeve 47 pulls the horizontal plate 63 through the connecting arm 5. Since the middle part of the horizontal plate 63 is hinged to the mounting bracket 3, when the top of the connecting arm 5 moves down, its top will press the horizontal plate 63. At this time, one of the two abutting blocks 61 is raised and the other moves down. The moving abutting block 61 is to clean the abutting block 61 from sticking to the angle steel.

[0050] The rotor 43 rotates, driving the centrifugal block 45. The centrifugal block 45 expands outward and abuts against the inner side of the centrifugal seat 42, causing the centrifugal seat 42 to rotate. The rotation of the centrifugal seat 42 drives the eccentric block 410, which in turn drives the piston 72 to reciprocate through the mating block 73. This, in turn, cooperates with the opening and closing of the check valve 76, enabling the abutting block 61 of the suction hole 64 to generate a dust suction function, sucking away iron filings and dust in the V-groove of the angle steel through the suction hole 64.

[0051] When the angle steel is moved to the designated position, the angle steel stops, and the guide wheel 134 also stops rotating. At this time, the pre-tightening spring 49 in the transmission structure 4 restores its deformation, drives the sleeve 47 to move up and cooperates with the connecting arm 5, so that the front end of the horizontal plate 63 moves down and the rear end lifts up. Then the front abutment block 61 presses against the angle steel, firmly fixing it on the material conveying guide frame 14, realizing instantaneous limiting and preventing the angle steel from overshooting.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An angle steel production line, comprising a conveying unit (11), a conveying unit (2) (12), a punching and cutting mechanism (13) and a conveying guide (14), characterized in that: The punching and cutting mechanism (13) is disposed between the first conveying unit (11) and the second conveying unit (12), and the conveying guide (14) passes through the punching and cutting mechanism (13). The punching and cutting mechanism (13) includes a base (131), which is fixed to the outer wall of the material conveying guide (14). A frame (132) is fixed on the top side of the base (131). A punching and cutting structure (133) for angle steel processing is provided on the frame (132). A guide wheel (134) is provided on one side of the frame (132). A connecting shaft (135) is installed at the end of the guide wheel (134). The frame (132) is provided with a protective device (2) that cooperates with the guide wheel (134). The protective device (2) consists of a mounting frame (3), a transmission structure (4), a connecting arm (5), an abutment component (6), and a pressurizing structure (7). The connecting arm (5) is connected to the transmission structure (4) and the abutment component (6) respectively. The pressurizing structure (7) is used in cooperation with the transmission structure (4). The pressurizing structure (7) is connected to the abutment component (6). The transmission structure (4) includes a transmission main shaft (41), a centrifugal seat (42), a rotor (43) and a sleeve (47) are provided on the outside of the transmission main shaft (41), the rotor (43) is located inside the centrifugal seat (42) and a centrifugal block (45) is provided on the outside of the rotor (43), an elastic guide shaft (46) is installed between the rotor (43) and the centrifugal block (45), a connecting rod (48) is hinged between the centrifugal block (45) and the sleeve (47), and a transmission component (44) is provided between the end of the transmission main shaft (41) and the connecting shaft (135). The sleeve (47) is located above the rotor (43). The inner side of the rotor (43) is fixed to the outer surface of the transmission main shaft (41). A preload spring (49) is rotatably installed between the sleeve (47) and the rotor (43). An eccentric block (410) connected to the pressurization structure (7) is installed on the bottom side of the centrifugal seat (42). The abutting component (6) includes two abutting blocks (61), each abutting block (61) has a connecting seat (62) welded to its top side, and a horizontal plate (63) is hinged between the two connecting seats (62). The two ends of the connecting arm (5) are respectively connected to the horizontal plate (63) and the outer wall of the sleeve (47).

2. The angle steel production line according to claim 1, characterized in that: The two abutting blocks (61) are distributed one in front of the other, and the abutting blocks (61) connected to the pressurizing structure (7) have suction holes (64) inside.

3. The angle steel production line according to claim 2, characterized in that: Both of the abutment blocks (61) are adapted to the shape of the angle steel, and the bottom side of the other abutment block (61) is provided with an anti-slip pad.

4. The angle steel production line according to claim 1, characterized in that: The pressurization structure (7) includes a pressurization cylinder (71) and a filter cylinder (75) fixed to the outer wall of the mounting bracket (3). The pressurization cylinder (71) has a piston (72) extending outward therefrom inside. A mating block (73) is fixed to the end of the piston (72). The mating block (73) abuts against the eccentric block (410). A check valve (76) is provided on the bottom side of the pressurization cylinder (71). The filter cylinder (75) is connected to one of the mating blocks (73).

5. The angle steel production line according to claim 4, characterized in that: A return spring (74) is installed between the outer wall of the booster cylinder (71) and the outer surface of the piston (72). A filter plate (78) is fixed inside the filter cylinder (75) by bolts. A connecting pipe one (77) and a connecting pipe two (79) are fixed to the outside of the filter cylinder (75). The end of the connecting pipe one (77) is connected to the flange of the check valve (76), and the connecting pipe two (79) is connected to the mating block (73) with a suction hole (64).

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