A steel strip unwinding device with a function of distance measurement and speed regulation

Abstract

The present invention relates to the technical field of steel strip unwinding equipment, and discloses a steel strip unwinding device with a ranging and speed regulating function, which includes an unwinder and a steel coil. The unwinder is composed of a machine body, a pressing roller, and a frame. The steel coil is arranged on the pressing roller. A stretching prevention mechanism is arranged on the side wall of the machine body, and the stretching prevention mechanism is used to prevent the outer diameter of the steel coil from increasing during unwinding. A deviation prevention mechanism is arranged at the bottom of the stretching prevention mechanism. The steel strip passes through the deviation prevention mechanism to realize the unwinding of the steel coil, and the deviation prevention mechanism is used to prevent the steel coil from deviating during unwinding. Through the stretching prevention mechanism, the steel coil can be limited, avoiding the increase of the outer diameter of the steel coil during the unwinding process, effectively avoiding the situation that the outer diameter of the steel coil increases, and the components of the unwinder need to bear a greater load, resulting in excessive wear of the equipment and an increase in maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of steel strip unwinding equipment, and in particular to a steel strip unwinding device with a ranging and speed regulating function. Background Art

[0002] At the initial step of the forming production line, a steel strip automatic unwinding device is usually used for unwinding. The steel strip is then sequentially conveyed to different stations for processing through a conveying device.

[0003] As the unwinding process progresses, the outer layer of the steel coil gradually unfolds, while the inner layer remains tight. The influence of tension causes the coiled part of the outer layer of the steel coil to gradually unfold, resulting in an increase in the diameter of the steel coil. As the outer diameter of the steel coil increases, components such as the shaft and rollers of the unwinder need to bear a greater load, which can lead to excessive wear of the equipment and an increase in maintenance costs. When the outer diameter of the steel coil increases, it is also easy to cause uneven unwinding of the steel strip, which in turn affects the operation during the subsequent processing. Existing unwinders usually automatically adjust the unwinding speed and tension of the steel strip through a pneumatic tension regulating device. The pneumatic tension regulating device relies on a tension sensor to monitor the tension of the steel strip in real time. The sensor is installed in a moving part and is easily damaged by mechanical impact, resulting in wear, misalignment or drift, and unable to provide accurate tension data, causing the control system to be unable to make correct adjustments.

[0004] Therefore, the present invention provides a steel strip unwinding device with a ranging and speed regulating function. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The present invention provides a steel strip unwinding device with a ranging and speed regulating function, which includes an unwinder and a steel coil. The unwinder is composed of a machine body, a pressing roller, and a frame. A driving source is arranged inside the machine body, and the output end of the driving source is fixedly connected with the pressing roller. A plurality of pressing plates are fixedly connected to the outer wall of the pressing roller. The bottom of the machine body is fixedly connected with the frame. The steel coil is arranged on the pressing plates. An anti-unfolding mechanism is arranged on the side wall of the machine body. The anti-unfolding mechanism is used to prevent the outer diameter of the steel coil from increasing during unwinding. An anti-offset mechanism is arranged at the bottom of the anti-unfolding mechanism. The steel strip passes through the anti-offset mechanism to realize the unwinding of the steel coil. The anti-offset mechanism is used to prevent the steel coil from offsetting during unwinding. An ultrasonic ranging sensor is arranged on the inner bottom surface of the frame, and the ultrasonic ranging sensor is arranged at the bottom of the unwound steel strip. The anti-unfolding mechanism includes a motor arranged on the side wall of the machine body. The output end of the motor is fixedly connected with a bidirectional lead screw. A fixed plate is fixedly connected to the side wall of the machine body. The bidirectional lead screw is rotatably connected to the fixed plate. Two movable plates are threadedly connected to the bidirectional lead screw. Limiting plates are arranged between the opposite surfaces of the two movable plates. Elastic components are arranged between the two limiting plates and the adjacent movable plates. The limiting plate is an arc-shaped plate, and the side wall of the limiting plate is arranged in contact with the side wall of the steel coil. The anti-unfolding mechanism can limit the steel coil to prevent the outer diameter of the steel coil from increasing during the unwinding process, effectively avoiding the situation that the outer diameter of the steel coil increases, and the components of the unwinder need to bear a greater load, resulting in excessive wear of the equipment and increased maintenance costs. The anti-offset mechanism can play a role in limiting the unwinding of the steel coil, preventing the steel strip from offsetting, and ensuring that the steel strip always remains on the correct track.

[0007] Preferably, the elastic component includes a hollow block fixedly connected to the side wall of the movable plate. An activity block is slidably connected inside the hollow block. A spring is arranged in the extrusion cavity between the activity block and the hollow block. The activity block is fixedly connected to the side wall of the limiting plate. The elastic component is used to reduce the impact and influence caused by the increase in the outer diameter of the steel coil.

[0008] Preferably, the anti-offset mechanism includes two installation grooves opened on the movable plate. The two installation grooves are distributed oppositely. A connecting block is slidably connected in the two installation grooves. A rotating rod is rotatably arranged between the two connecting blocks. The rotating rod penetrates through the connecting block and is fixedly connected with a limiting block. An arc-shaped groove is opened on the side wall of the machine body. The limiting block is slidably connected with the arc-shaped groove. A connecting plate is fixedly connected to the rotating rod, and a limiting frame is fixedly connected to the bottom of the connecting plate. A limiting component is arranged inside the limiting frame. A lubricating mechanism is arranged on the side wall of the machine body. The lubricating mechanism is used to inject lubricant into the arc-shaped groove. When the movable plate moves from the outside to the inside of the machine body, it is also a process of the steel coil changing from more to less. The limiting frame can descend and rotate along with the movement of the movable plate, and the steel strip passes through the limiting frame. The limiting frame can guide the discharging position of the steel strip to descend, so that the discharging position of the steel strip remains near the original height, reducing the influence caused by the change in the discharging position of the steel strip.

[0009] Preferably, the limiting component includes a plurality of sinking grooves formed in the inner wall of the limiting frame, and a roller is rotatably arranged in the sinking groove, and the roller can guide and limit the steel strip.

[0010] Preferably, a rotating plate is rotatably arranged on one side of the top of the frame, and a locking structure is arranged on the side wall of the rotating plate. The locking structure is used to lock with the other side of the top of the frame. Two vertical plates are fixedly connected to the top surface of the rotating plate. Additional sliding grooves are formed in the side walls of the vertical plates and the side wall of the machine body. Connecting rods are fixedly connected to the front and rear side walls of the movable plate, and the two connecting rods are respectively slidably connected to the adjacent sliding grooves. The locking structure can be a positioning pin and a positioning hole. A positioning pin is slidably connected to the top of the rotating plate, and a positioning hole is formed in the top of the frame. When the rotating plate is perpendicular to the frame, install the positioning pin to lock and position the rotating plate. At this time, the connecting rod abuts against the sliding groove on the side wall of the vertical plate, which can limit the movable plate and is beneficial to the stability of the movable plate during movement. Remove the locking structure and rotate the rotating plate to place the steel coil on the abutting roller.

[0011] Preferably, the lubricating mechanism includes a mounting plate fixedly connected to the side wall of the machine body. A box body is fixedly connected to the bottom surface of the mounting plate. A piston plate is slidably arranged inside the box body. A through hole is formed in the side wall of the box body. A tension spring is fixedly connected between the movable plate and the piston plate. The tension spring passes through the through hole. Lubricant fills the inside of the box body on the side away from the tension spring. A liquid discharge pipe is fixedly communicated with the bottom surface of the box body. The liquid discharge pipe is a flexible pipe. One end of the liquid discharge pipe is fixedly communicated with the bottom surface of the box body, and the other end is buried in the side wall of the machine body, and the pipe orifice at the other end extends into the arc-shaped groove. An air inlet is formed in the side wall of the box body, and a filter screen is fixedly connected inside the air inlet. When the movable plate moves, the movable plate drives the piston plate to move through the tension spring. When the piston plate moves to the left side of the liquid discharge pipe, the lubricant flows into the liquid discharge pipe and then into the arc-shaped groove. The lubricant can lubricate the arc-shaped groove and reduce the wear of the limiting block and the arc-shaped groove.

[0012] Preferably, there are four sinking grooves, and the four sinking grooves are respectively located on the inner walls of the limiting frame.

[0013] The beneficial effects of the present invention are as follows: For a steel strip unwinding device with a distance measuring and speed regulating function described in the present invention, the steel coil can be limited by the anti-unfolding mechanism to avoid the increase of the outer diameter of the steel coil during the unwinding process, which can effectively prevent the situation that the components of the unwinding machine need to bear a greater load due to the increase of the outer diameter of the steel coil, resulting in excessive wear of the equipment and increased maintenance costs. The ultrasonic distance measuring sensor at the bottom detects the distance between the steel strip and itself in real time and transmits the data to the control system of the unwinding machine, and can adjust the unwinding speed of the steel strip in real time according to the distance, and timely adjust the operating power of the unwinding machine to avoid excessive tension fluctuations of the steel strip during the change of the outer diameter, and prevent the influence of insufficient or excessive tension on the product quality.

[0014] A steel strip unwinding device with ranging and speed regulation functions according to the present invention can limit the unwinding of the steel coil through an anti-offset mechanism, avoid the offset of the steel strip, and ensure that the steel strip always remains on the correct track.

[0015] A steel strip unwinding device with ranging and speed regulation functions according to the present invention can enable the movable plate to drive the rotating rod and the limiting frame to rotate during the movement through the arc-shaped groove, so that the limiting frame can better limit the steel strip.

[0016] A steel strip unwinding device with ranging and speed regulation functions according to the present invention, when the movable plate moves, the movable plate drives the piston plate to move through the tension spring. When the piston plate moves to the left side of the liquid discharge pipe, the lubricant flows into the liquid discharge pipe and then into the arc-shaped groove. The lubricant can lubricate the arc-shaped groove and reduce the wear of the limiting block and the arc-shaped groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is Figure 1 an enlarged view of part A in

[0019] Figure 3 is a top view of the present invention;

[0020] Figure 4 is a schematic structural diagram of the limiting frame of the present invention;

[0021] Figure 5 is a schematic structural diagram of the first working state of the unwinder in the present invention;

[0022] Figure 6 is a schematic structural diagram of the second working state of the unwinder in the present invention;

[0023] Figure 7 is a schematic structural diagram of the lubrication mechanism in the present invention.

[0024] Description of the reference numerals:

[0025] 1. Unwinding machine; 11. Machine body; 12. Tightening roller; 13. Frame; 131. Rotating plate; 132. Locking structure; 2. Steel coil; 3. Anti-unfolding mechanism; 31. Motor; 32. Bi-directional lead screw; 33. Fixed plate; 34. Movable plate; 35. Limiting plate; 36. Hollow block; 37. Movable block; 38. Chute; 4. Anti-offset mechanism; 41. Installation groove; 42. Connecting block; 43. Rotating rod; 44. Arc groove; 45. Connecting plate; 46. Limiting frame; 47. Limiting block; 5. Ultrasonic distance sensor; 6. Vertical plate; 7. Connecting rod; 8. Limiting component; 81. Sunk groove; 82. Roller; 9. Lubrication mechanism; 91. Installation plate; 92. Box body; 93. Tension spring; 94. Piston plate; 95. Through hole; 96. Drain pipe. Detailed implementation manners

[0026] Now, the subject matter described herein will be discussed with reference to exemplary implementation manners. It should be understood that discussing these implementation manners is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0027] Embodiment

[0028] As Figures 1 to 7 shown, a steel strip unwinding device with a distance measurement and speed regulation function according to an embodiment of the present invention is mainly referred to Figure 1 、 Figure 3 , and includes an unwinding machine 1 and a steel coil 2. The unwinding machine 1 is composed of a machine body 11, a tightening roller 12, and a frame 13. A driving source is arranged inside the machine body 11, and the output end of the driving source is fixedly connected with the tightening roller 12. A plurality of tightening plates are fixedly connected to the outer wall of the tightening roller 12. The machine body 11 is fixedly connected with the frame 13 at the bottom. The steel coil 2 is arranged on the tightening plates. An anti-unfolding mechanism 3 is arranged on the side wall of the machine body 11. The anti-unfolding mechanism 3 is used to prevent the outer diameter of the steel coil 2 from increasing during unwinding. An anti-offset mechanism 4 is arranged at the bottom of the anti-unfolding mechanism 3. The steel strip passes through the anti-offset mechanism 4 to realize the unwinding of the steel coil 2. The anti-offset mechanism 4 is used to prevent the steel coil 2 from offsetting during unwinding. An ultrasonic distance sensor 5 is arranged on the inner bottom surface of the frame 13, and the ultrasonic distance sensor 5 is arranged at the bottom of the unwound steel strip.

[0029] Specifically, the anti-stretching mechanism 3 can limit the steel coil 2 to prevent the outer diameter of the steel coil 2 from increasing during the unwinding process, effectively avoiding the situation where the components of the unwinder 1 need to bear a greater load due to the increase in the outer diameter of the steel coil 2, resulting in excessive wear of the equipment and increased maintenance costs. The anti-offset mechanism 4 can limit the unwinding of the steel coil 2 to prevent the steel strip from shifting and ensure that the steel strip always remains on the correct track. A control system is provided inside the machine body 11, and the control system includes a diameter calculation module, a drive motor connected to the pressing roller 12, a PLC, and a display. During the unwinding of the steel strip by the unwinder 1, the ultrasonic distance sensor 5 at the bottom continuously detects the distance between the steel strip and itself and transmits the data to the control system of the unwinder 1. The control system can calculate the actual diameter of the current steel coil 2 in real time, adjust the unwinding speed of the steel strip according to the distance in real time, and timely adjust the operating power of the drive motor to avoid excessive tension fluctuations of the steel strip during the change of the outer diameter, preventing the impact of insufficient or excessive tension on the product quality.

[0030] Please refer specifically to Figure 1 、 Figure 3 、 Figure 5 Specifically, the anti-stretching mechanism 3 includes a motor 31 arranged on the side wall of the machine body 11. The output end of the motor 31 is fixedly connected with a bidirectional lead screw 32. A fixed plate 33 is fixedly connected to the side wall of the machine body 11. The bidirectional lead screw 32 is rotatably connected to the fixed plate 33. Two movable plates 34 are threadedly connected to the bidirectional lead screw 32. Limiting plates 35 are arranged between the opposite surfaces of the two movable plates 34. Elastic components are arranged between the two limiting plates 35 and the adjacent movable plates 34. The limiting plate 35 is an arc-shaped plate, and the side wall of the limiting plate 35 is arranged in contact with the side wall of the steel coil 2. The elastic component includes a hollow block 36 fixedly connected to the side wall of the movable plate 34. A movable block 37 is slidably connected inside the hollow block 36. A spring is arranged in the extrusion cavity between the movable block 37 and the hollow block 36. The movable block 37 is fixedly connected to the side wall of the limiting plate 35.

[0031] Specifically, the drive motor 31 drives the bidirectional lead screw 32 to rotate, thereby driving the two movable plates 34 to approach each other, and further enabling the two limiting plates 35 to abut against the outer wall of the steel coil 2. When the outer diameter of the steel coil 2 increases, it will be blocked and resisted by the limiting plate 35, which can reduce the influence of the tension fluctuation of the steel coil 2 caused by the increase in the outer diameter of the steel coil 2. The elastic component is used to reduce the impact and influence caused by the increase in the outer diameter of the steel coil 2.

[0032] Please refer specifically to Figure 2 、 Figure 4 、 Figure 5 、 Figure 6, the anti-offset mechanism 4 includes two mounting grooves 41 formed in the movable plate 34. The two mounting grooves 41 are distributed oppositely, and a connecting block 42 is slidably connected in the mounting groove 41. A rotating rod 43 is rotatably arranged between the two connecting blocks 42. The rotating rod 43 penetrates through the connecting block 42 and is fixedly connected with a limiting block 47. An arc-shaped groove 44 is formed in the side wall of the machine body 11, and the limiting block 47 is slidably connected with the arc-shaped groove 44. A connecting plate 45 is fixedly connected to the rotating rod 43, and a limiting frame 46 is fixedly connected to the bottom of the connecting plate 45. A limiting component 8 is arranged in the limiting frame 46. The limiting component 8 includes a sunk groove 81 formed in the inner wall of the limiting frame 46. A roller 82 is rotatably arranged in the sunk groove 81. There are four sunk grooves 81, and the four sunk grooves 81 are respectively located on each inner wall of the limiting frame 46.

[0033] Specifically, when the movable plate 34 moves, the connecting block 42 and the rotating rod 43 move accordingly. Since the limiting block 47 is arranged in the arc-shaped groove 44, the limiting block 47 will gradually descend and slide in the arc-shaped groove 44, and can drive the rotating rod 43 and the connecting plate 45 and the limiting frame 46 fixedly connected to the rotating rod 43 to move and rotate accordingly. Since the direction of the arc-shaped groove 44 is downward, at this time the connecting block 42 will descend in the mounting groove 41, that is, the limiting frame 46 will change from Figure 5 the vertical state in Figure 6 to the rotating state in

[0034] Please refer to Figure 1 and Figure 3 emphatically. On one side of the top of the frame 13, a rotating plate 131 is rotatably arranged, and a locking structure 132 is arranged on the side wall of the rotating plate 131. The locking structure 132 is used to lock with the other side of the top of the frame 13. Two vertical plates 6 are fixedly connected to the top surface of the rotating plate 131. Additional sliding grooves 38 are formed in the side walls of the vertical plates 6 and the side wall of the machine body 11. Connecting rods 7 are fixedly connected to the front and rear side walls of the movable plate 34, and the two connecting rods 7 are respectively slidably connected with the adjacent sliding grooves 38.

[0035] Specifically, the locking structure 132 can be a positioning pin and a positioning socket. A positioning pin is slidably connected to the top of the rotating plate 131, and a positioning socket is provided at the top of the frame 13. When the rotating plate 131 is perpendicular to the frame 13, the positioning pin is installed to lock and position the rotating plate 131. At this time, the connecting rod 7 abuts against the sliding groove 38 on the side wall of the vertical plate 6, which can limit the movable plate 34 and facilitate the stability of the movable plate 34 during movement. The locking structure 132 is disassembled and the rotating plate 131 is rotated, and the steel coil 2 can be placed on the pressing roller 12.

[0036] Please refer specifically to Figure 1 、 Figure 2 、 Figure 7 A lubricating mechanism 9 is provided on the side wall of the machine body 11. The lubricating mechanism 9 is used to inject lubricant into the arc-shaped groove 44. The lubricating mechanism 9 includes a mounting plate 91 fixedly connected to the side wall of the machine body 11. The bottom surface of the mounting plate 91 is fixedly connected with a box body 92. A piston plate 94 is slidably arranged inside the box body 92. A through hole 95 is provided on the side wall of the box body 92. The inside of the box body 92 on the side away from the tension spring 93 is filled with lubricant. A tension spring 93 is fixedly connected between the movable plate 34 and the piston plate 94. The tension spring 93 passes through the through hole 95. A drain pipe 96 is fixedly connected to the bottom surface of the box body 92. The drain pipe 96 is a flexible pipe. One end of the drain pipe 96 is fixedly connected to the bottom surface of the box body 92, and the other end is buried in the side wall of the machine body 11, and the pipe orifice at the other end extends into the arc-shaped groove 44. An air inlet is provided on the side wall of the box body 92, and a filter screen is fixedly connected inside the air inlet.

[0037] Specifically, when the movable plate 34 moves, the movable plate 34 drives the piston plate 94 to move through the tension spring 93. When the piston plate 94 moves to the left side of the drain pipe 96, the lubricant flows into the drain pipe 96 and then into the arc-shaped groove 44. The lubricant can lubricate the arc-shaped groove 44 and reduce the wear of the limiting block 47 and the arc-shaped groove 44.

[0038] Working principle

[0039] When it is necessary to install the steel coil 2, disassemble the locking structure 132, rotate the rotating plate 131, place the steel coil 2 on the pressing roller 12, then operate in the reverse direction, the locking structure 132 and the rotating plate 131 are reset, guide the steel strip through the limiting frame 46, drive the uncoiler 1 to make the pressing roller 12 drive the steel coil 2 to rotate for uncoiling, drive the motor 31 to drive the bidirectional lead screw 32 to rotate, thereby driving the two movable plates 34 to approach each other, and further making the two limiting plates 35 abut against the outer wall of the steel coil 2. When the outer diameter of the steel coil 2 increases, it will be blocked and resisted by the limiting plate 35, which can reduce the influence of the steel coil 2 tension fluctuation caused by the increase of the outer diameter of the steel coil 2. The spring in the elastic component is used to reduce the impact and influence caused by the increase of the outer diameter of the steel coil 2. When the movable plate 34 moves, the connecting block 42 and the rotating rod 43 move accordingly. Since the limiting block 47 is arranged in the arc-shaped groove 44, the limiting block 47 will gradually descend and slide in the arc-shaped groove 44, and can drive the rotating rod 43 and the connecting plate 45 and the limiting frame 46 fixedly connected to the rotating rod 43 to move and rotate accordingly. The limiting frame 46 can descend and rotate as the movable plate 34 moves, and the steel strip passes through the limiting frame 46. The limiting frame 46 can guide the discharging position of the steel strip to descend, so that the discharging position of the steel strip remains near the original height, reducing the influence caused by the change of the discharging position of the steel strip. And when the movable plate 34 moves, the movable plate 34 drives the piston plate 94 to move through the tension spring 93. When the piston plate 94 moves to the left side of the liquid discharge pipe 96, the lubricant flows into the liquid discharge pipe 96 and then into the arc-shaped groove 44. The lubricant can lubricate the arc-shaped groove 44, reduce the wear of the limiting block 47 and the arc-shaped groove 44, and is beneficial to the long-term use of the limiting block 47.

[0040] The above describes the embodiments of the specific implementation manners, but the embodiments are not limited to the above specific implementation manners. The above specific implementation manners are only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A steel strip unwinding device with distance measurement and speed regulation function, characterized in that: The invention comprises an unwinding machine (1) and a steel coil (2), wherein the unwinding machine (1) is composed of a machine body (11), a clamping roller (12), and a frame (13); a driving source is arranged in the machine body (11), and the output end of the driving source is fixedly connected to the clamping roller (12); the outer wall of the clamping roller (12) is fixedly connected to a plurality of clamping plates; the bottom of the machine body (11) is fixedly connected to the frame (13); the steel coil (2) is arranged on the clamping plate; and the side wall of the machine body (11) is provided with an anti-expansion mechanism ( 3), the anti-stretching mechanism (3) is used to prevent the outer diameter of the steel coil (2) from increasing when it is unwinding, an anti-deviating mechanism (4) is arranged at the bottom of the anti-stretching mechanism (3), the steel strip passes through the anti-deviating mechanism (4) and the steel coil (2) is unwinded, the anti-deviating mechanism (4) is used to prevent the steel coil (2) from deviating when it is unwinding, an ultrasonic distance measuring sensor (5) is arranged on the inner bottom surface of the frame (13), and the ultrasonic distance measuring sensor (5) is arranged at the bottom of the unwinding steel strip; The anti-expansion mechanism (3) comprises a motor (31) arranged on the side wall of the machine body (11); a bidirectional screw (32) is fixedly connected to the output end of the motor (31); a fixed plate (33) is fixedly connected to the side wall of the machine body (11); the bidirectional screw (32) is rotatably connected to the fixed plate (33); two movable plates (34) are threadedly connected to the bidirectional screw (32); a limit plate (35) is arranged between the opposite surfaces of the two movable plates (34); an elastic component is arranged between the two limit plates (35) and the adjacent movable plates (34); the limit plate (35) is an arc-shaped plate, and the side wall of the limit plate (35) is arranged to fit the side wall of the steel coil (2); The anti-deviating mechanism (4) comprises two mounting grooves (41) provided on the movable plate (34), the two mounting grooves (41) being arranged opposite to each other, connecting blocks (42) being slidably connected in the two mounting grooves (41), a rotating rod (43) being rotatably arranged between the two connecting blocks (42), the rotating rod (43) penetrating the connecting blocks (42) and being fixedly connected to a limiting block (47), an arc groove (44) being provided on the side wall of the machine body (11), the limiting block (47) being slidably connected to the arc groove (44), a connecting plate (45) being fixedly connected to the bottom of the connecting plate (45), a limiting assembly (8) being arranged in the limiting frame (46), and a lubricating mechanism (9) being provided on the side wall of the machine body (11), the lubricating mechanism (9) being used for injecting lubricant into the arc groove (44).

2. The steel strip unwinding device with distance measurement and speed regulation function according to claim 1 is characterized in that: The elastic component comprises a hollow block (36) fixedly connected to the side wall of the movable plate (34), a movable block (37) being slidably connected inside the hollow block (36), a spring being arranged in the extrusion cavity between the movable block (37) and the hollow block (36), and the movable block (37) being fixedly connected to the side wall of the limiting plate (35).

3. The steel strip unwinding device with distance measurement and speed regulation function according to claim 1 is characterized in that: The limiting assembly (8) comprises a plurality of sink grooves (81) formed on the inner wall of the limiting frame (46), and a roller (82) is rotatably arranged in the sink grooves (81).

4. The steel strip unwinding device with distance measurement and speed regulation function according to claim 1 is characterized in that: A rotating plate (131) is rotatably provided on one side of the top of the frame (13), and a locking structure (132) is provided on the side wall of the rotating plate (131), and the locking structure (132) is used to lock with the other side of the top of the frame (13). Two vertical plates (6) are fixedly connected to the top surface of the rotating plate (131), and the side walls of the vertical plates (6) and the side walls of the body (11) are both provided with additional sliding grooves (38). The front and rear side walls of the movable plate (34) are both fixedly connected with connecting rods (7), and the two connecting rods (7) are respectively slidably connected to adjacent sliding grooves (38).

5. The steel strip unwinding device with distance measurement and speed regulation function according to claim 1 is characterized in that: The lubricating mechanism (9) comprises a mounting plate (91) fixedly connected to a side wall of a machine body (11); a box body (92) is fixedly connected to the bottom surface of the mounting plate (91); a piston plate (94) is slidably arranged inside the box body (92); a through hole (95) is formed in the side wall of the box body (92); a tension spring (93) is fixedly connected between the movable plate (34) and the piston plate (94); the tension spring (93) passes through the through hole (95); the box body ( The interior of the casing (92) away from the tension spring (93) is filled with lubricant, and the bottom surface of the casing (92) is fixedly connected to a drain pipe (96), and the drain pipe (96) is a hose. One end of the drain pipe (96) is fixedly connected to the bottom surface of the casing (92), and the other end is buried in the side wall of the machine body (11), and the pipe mouth of the other end extends into the arc groove (44). The side wall of the casing (92) is provided with an air inlet, and a filter screen is fixedly connected to the air inlet.

6. The steel strip unwinding device with distance measurement and speed regulation function according to claim 3 is characterized in that: Four sink grooves (81) are provided, and the four sink grooves (81) are respectively located on the inner walls of the limiting frame (46).

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