A rewinding unit looper device and control method thereof

Abstract

The invention discloses a rewinding unit looper device and a control method thereof, comprising a looper frame, a limit platform, a buffer guide component, a regulating component, a traction chain, a traction wheel group, a guide frame, a limit column, a limit groove, a traction hydraulic cylinder, a hydraulic pipeline, an encoder body and a touch screen. The limit platform is arranged at the bottom of the looper frame. The invention supports and limits the looper frame through the cooperation between the limit groove and the limit platform, prevents the looper frame from being offset during empty loop operation, ensures the operation accuracy of the roller system, improves the working stability of the equipment, guides the looper frame by the provided buffer guide component, prevents the looper frame from being deformed and damaged by impact, thereby prolonging the service life of the equipment, and reduces the local pressure of the hydraulic system by the provided regulating component, reduces the tension change of the traction belt, avoids the occurrence of steel belt wave during the operation of the looper frame, and ensures the production quality of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of rewinder accessories, in particular to a rewinder group looper device and a control method thereof. Background Art

[0002] The rewinder is a device that can reel in and rewind products. During the production process, the rewinder is used to pull, cut and inspect the products. During operation, when the tail of the steel strip runs from the inlet shear to the welding machine, the looper rises. When the welding of the new steel coil head and the tail of the strip on the uncoiler is completed, the unit operation exceeds the creeping speed, and the looper descends. After descending to a certain positioning height, the tension balance is achieved. At this time, the looper trolley is in an empty state and maintained at a certain height range. However, the existing rewinder unit looper equipment has no influential guide mechanism. The vibration generated during the operation of the equipment will cause the looper and the guide frame to impact, and the impact is easy to cause the looper to collide with the guide frame. The sleeve is deformed, thus affecting the service life of the equipment, and the existing rewinding unit looper equipment lacks a guiding structure. In the empty sleeve state, the looper will be offset, thereby affecting the running accuracy of the roller system and reducing the working stability of the equipment. At the same time, the existing rewinding unit looper equipment is difficult to adjust the overflow pressure in the hydraulic pipeline. The speed change during the up and down operation of the looper will cause the local hydraulic pressure to increase, thereby causing the tension of the traction steel belt to change, resulting in the appearance of steel belt wave shape during the operation of the looper, thereby affecting the production quality of the equipment. Therefore, it is very necessary to design a rewinding unit looper equipment and a control method thereof. Summary of the invention

[0003] The object of the present invention is to provide a rewinding unit looper device and a control method thereof to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rewinding machine group looper device, comprising a looper frame, a limit platform, a buffer guide assembly and a regulating assembly, a limit platform is arranged at the bottom of the looper frame, and a first connecting ring is arranged at the four corners of the top of the looper frame, a second connecting ring is sleeved on the first connecting ring, and the top of the second connecting ring is fixedly connected to one end of a traction chain, the traction chain is wrapped around the traction wheel group, and the traction wheel group is cooperatively connected to the support frame, the support frame is fixedly mounted on the guide frame, and the bottom of the guide frame is fixed to the top of the base plate, a limit column is arranged on the top of the base plate, and the limit column is located directly below the limit platform, and a limit groove is provided on the top of the limit column.

[0005] Preferably, a traction hydraulic cylinder is provided at the four corners of the top of the base plate, and the output end of the traction hydraulic cylinder is fixedly connected to the other end of the traction chain, the input end of the traction hydraulic cylinder is connected to a hydraulic pipeline, and an overflow valve is provided on the hydraulic pipeline, one end of the hydraulic pipeline is connected to the output end of the hydraulic box, and the hydraulic box is fixed on one side of the base plate.

[0006] Preferably, an encoder body is provided on the loop frame, and a buffer groove in a buffer guide assembly is opened on the loop frame, the buffer guide assembly is composed of a buffer groove, a sliding column, a guide wheel platform, a buffer spring, a guide wheel bracket and a guide roller, a sliding column is slidably connected in the buffer groove, and a guide wheel platform is provided at one end of the sliding column away from the loop frame.

[0007] Preferably, a buffer spring is provided on one side of the guide wheel platform, and one end of the buffer spring is fixedly connected to the loop frame, the sliding column is located inside the buffer spring, and a guide wheel bracket is symmetrically provided on the other side of the guide wheel platform, and a guide roller is rotatably connected to the guide wheel bracket through a rotating shaft, and the guide roller is rollingly connected to one side of the guide frame.

[0008] Preferably, a first bracket and a second bracket are respectively arranged on the top of the loop frame, and the first bracket and the second bracket are respectively rotatably connected with a first rotating shaft and a second rotating shaft through bearings, and a first roller body and a second roller body are respectively sleeved on the first rotating shaft and the second rotating shaft, a third bracket is arranged on both sides of the loop frame, and the third bracket is rotatably connected with a third rotating shaft through bearings, a driven roller is arranged on the third rotating shaft, and a traction belt is wrapped around the driven roller, the first roller body and the second roller body.

[0009] Preferably, a first base and a second base are respectively provided on both sides of the loop frame, and a first motor and a second motor are respectively provided on the first base and the second base, and the output ends of the first motor and the second motor are respectively fixedly connected to one end of the first rotating shaft and the second rotating shaft.

[0010] Preferably, a control box is provided on one side of the hydraulic box, and an operating table is provided on the top of the control box, a touch screen is embedded in the top of the operating table, and a control table in a control component is provided at the inner bottom of the control box, and the control component is composed of a central processing module, a height detection module, a DP network module, a speed monitoring module, an analysis and processing module, a relief valve adjustment module, a feedback output module and a control table, the input end of the height detection module controls the output end connected to the encoder body, the speed monitoring module controls the connection to the first motor and the second motor respectively, the relief valve adjustment module controls the input end connected to the relief valve, and the feedback output module and the central processing module both control the connection to the touch screen.

[0011] Preferably, a central processing module is arranged at the top center of the control console, and a height detection module, a DP network module and a speed monitoring module are respectively arranged on one side of the top of the control console, and an analysis and processing module, a relief valve adjustment module and a feedback output module are respectively arranged on the other side of the top of the control console, and the input end of the feedback output module controls the output end of the central processing module, the output end of the central processing module controls the input end of the analysis and processing module, and the output end of the analysis and processing module controls the input end of the analysis and processing module, the output end of the analysis and processing module controls the input end of the central processing module, and the input end of the central processing module controls the output ends of the DP network module and the speed monitoring module, and the input end of the DP network module controls the output end of the height detection module.

[0012] A loop control method for a rewinding unit comprises the following steps: step 1, loop traction; step 2, empty loop operation; step 3, tension control;

[0013] In the above step 1, firstly, the first connecting ring is sleeved on the second connecting ring, and one end of the traction chain is fixed on the top of the loop frame, and then the traction chain is wound around the traction wheel group, and the other end of the traction chain is fixed on the output end of the traction hydraulic cylinder, and then the traction belt is wound around the first roller body, the driven roller and the second roller body in sequence, and then the first motor and the second motor respectively drive the first rotating shaft and the second rotating shaft to rotate, so that the first roller body and the second roller body drive the traction belt to move, and the driven roller is driven to rotate by the traction belt, and the hydraulic box provides hydraulic power, so that the traction hydraulic cylinder pulls the traction chain, and then drives the loop frame to move up and down along the vertical direction;

[0014] In the above step 2, when the equipment is running in an empty sleeve, the traction hydraulic cylinder is in a non-operating state, and then the output power of the first motor and the second motor is adjusted so that the speed of the first roller is V 入 , while the second roller speed is V 入 +0.5m / min, using the speed difference between the first roller and the second roller to move the loop frame downward, so that the loop frame falls on the limiting column, and at the same time, the limiting groove and the limiting platform cooperate with each other to limit the loop frame to prevent the loop frame from deviating during empty loop operation and affecting the running accuracy of the roller system;

[0015] In the above step three, during the operation of the equipment, the encoder body detects the height information of the loop frame, and then transmits the height information to the height detection module, and then the DP network module transmits the height information to the central processing module, and at the same time, the speed monitoring module detects the operating power of the first motor and the second motor, and then transmits it to the central processing module, and then the central processing module transmits the height information and the operating power of the first motor and the second motor to the analysis and processing module, and then the analysis and processing module calculates the rotation speed of the first roller body and the second roller body in combination with the operating power of the first motor and the second motor, and calculates the overflow pressure in combination with the height information, and then transmits the adjustment instruction to the overflow valve adjustment module, and then the overflow valve adjustment module instructs the overflow valve to adjust the overflow pressure in the hydraulic pipeline to reduce the local hydraulic pressure, reduce the tension change of the traction belt, and avoid the occurrence of steel belt waves during the operation of the loop frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the rewinding unit looper equipment and control method thereof, by opening a limit groove on the top of the limit column, supports and limits the limit platform and the loop frame, prevents the loop frame from being offset during empty loop operation, thereby ensuring the operation accuracy of the roller system and improving the working stability of the equipment; the set sliding column, guide wheel platform and guide roller cooperate with the guide frame to guide the running loop frame; at the same time, the impact generated during the operation of the equipment is buffered by squeezing and stretching the buffer spring, prevents the loop frame from being deformed and damaged due to the impact, thereby extending the service life of the equipment; during the operation of the equipment, the encoder body detects the height information of the loop frame, and then transmits the height information to the height detection module In the block, the DP network module transmits the height information to the central processing module, and the speed monitoring module detects the operating power of the first motor and the second motor, and then transmits it to the central processing module, and then the central processing module transmits the height information and the operating power of the first motor and the second motor to the analysis and processing module, and then the analysis and processing module calculates the rotation speed of the first roller body and the second roller body in combination with the operating power of the first motor and the second motor, and calculates the overflow pressure in combination with the height information, and then transmits the adjustment instruction to the overflow valve adjustment module, and then the overflow valve adjustment module instructs the overflow valve to adjust the overflow pressure in the hydraulic pipeline to reduce the local hydraulic pressure, reduce the tension change of the traction belt, and avoid the appearance of steel belt waves during the operation of the loop frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of the overall structure of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of the middle A area;

[0019] Figure 3 for Figure 1 A partial enlarged view of the middle B area;

[0020] Figure 4 for Figure 1 A partial enlarged view of the middle C area;

[0021] Figure 5 It is a three-dimensional diagram of the overall structure of the present invention;

[0022] Figure 6 for Figure 5 A partial enlarged view of the D area in the middle;

[0023] Figure 7 It is a three-dimensional diagram of the local structure of the present invention;

[0024] Figure 8 It is a partial structural exploded diagram of the present invention;

[0025] Fig. 9 is a system flow chart of the present invention;

[0026] Fig.10 is a flow chart of the method of the present invention;

[0027] In the figure: 1. loop frame; 2. limit table; 3. buffer guide assembly; 4. first connecting ring; 5. second connecting ring; 6. regulating assembly; 7. traction chain; 8. traction wheel group; 9. support frame; 10. guide frame; 11. bottom plate; 12. limit column; 13. limit groove; 14. traction hydraulic cylinder; 15. hydraulic pipeline; 16. hydraulic box; 17. encoder body; 18. first rotating shaft; 19. second rotating shaft; 20. first roller body; 21. second roller body; 22. third rotating shaft; 23. driven roller; 24. Traction belt; 25. First motor; 26. Second motor; 27. Control box; 28. Operating table; 29. ​​Touch screen; 301. Buffer slide; 302. Sliding column; 303. Guide wheel platform; 304. Buffer spring; 305. Guide wheel bracket; 306. Guide roller; 601. Central processing module; 602. Height detection module; 603. DP network module; 604. Speed ​​monitoring module; 605. Analysis and processing module; 606. Overflow valve adjustment module; 607. Feedback output module; 608. Control table. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-9An embodiment of the present invention is as follows: a rewinding unit looping device comprises a looping frame 1, a limiting platform 2, a buffer guide assembly 3 and a regulating assembly 6, a limiting platform 2 is arranged at the bottom of the looping frame 1, and a first connecting ring 4 is arranged at the four corners of the top of the looping frame 1, a second connecting ring 5 is sleeved on the first connecting ring 4, and the top of the second connecting ring 5 is fixedly connected to one end of a traction chain 7, the traction chain 7 is wound around a traction wheel group 8, and the traction wheel group 8 is matched and connected to a support frame 9, the support frame 9 is fixedly mounted on a guide frame 10, and the bottom of the guide frame 10 is fixed to the top of a bottom plate 11, a limiting column 12 is arranged on the top of the bottom plate 11, and the limiting column 12 is located directly below the limiting platform 2, and a limiting groove 1 is provided on the top of the limiting column 12 3. A traction hydraulic cylinder 14 is provided at the top four corners of the bottom plate 11, and the output end of the traction hydraulic cylinder 14 is fixedly connected to the other end of the traction chain 7, the input end of the traction hydraulic cylinder 14 is connected with a hydraulic pipeline 15, and a relief valve is provided on the hydraulic pipeline 15, one end of the hydraulic pipeline 15 is connected with the output end of the hydraulic box 16, and the hydraulic box 16 is fixed on one side of the bottom plate 11, and the power output of the hydraulic pipeline 15 is transmitted to the traction hydraulic cylinder 14 by using the provided hydraulic pipeline 15, the encoder body 17 is provided on the loop frame 1, and the buffer slide 301 in the buffer guide assembly 3 is opened on the loop frame 1, and the buffer guide assembly 3 is composed of a buffer slide 301, a sliding column 302, a guide wheel platform 303, and a buffer spring 304. The guide frame 10 is composed of a guide wheel bracket 305 and a guide roller 306. A sliding column 302 is slidably connected in the buffer slide 301, and a guide wheel platform 303 is arranged at one end of the sliding column 302 away from the loop frame 1. The guide wheel bracket 305 is arranged to facilitate the installation of the guide roller 306. A buffer spring 304 is arranged on one side of the guide wheel platform 303, and one end of the buffer spring 304 is fixedly connected to the loop frame 1. The sliding column 302 is located inside the buffer spring 304. A guide wheel bracket 305 is symmetrically arranged on the other side of the guide wheel platform 303, and a guide roller 306 is rotatably connected to the guide wheel bracket 305 through a rotating shaft. The guide roller 306 is rollingly connected to one side of the guide frame 10. The guide roller 306 is arranged to be connected to the guide frame 10 by the guide roller 306. Cooperating with each other is beneficial to guiding and limiting the loop frame 1. A first bracket and a second bracket are respectively arranged on the top of the loop frame 1, and the first bracket and the second bracket are respectively rotatably connected with a first rotating shaft 18 and a second rotating shaft 19 through bearings, and a first roller body 20 and a second roller body 21 are respectively sleeved on the first rotating shaft 18 and the second rotating shaft 19. A third bracket is arranged on both sides of the loop frame 1, and a third rotating shaft 22 is rotatably connected to the third bracket through bearings, and a driven roller 23 is arranged on the third rotating shaft 22, and a traction belt 24 is wound around the driven roller 23, the first roller body 20 and the second roller body 21, and the traction belt 24 is arranged to facilitate driving the driven roller 23 to rotate. A first base and a second base are respectively arranged on both sides of the loop frame 1.The first base and the second base are respectively provided with a first motor 25 and a second motor 26, the output ends of the first motor 25 and the second motor 26 are respectively fixedly connected to one end of the first rotating shaft 18 and the second rotating shaft 19, and the first motor 25 and the second motor 26 are used to drive the first rotating shaft 18 and the second rotating shaft 19 to rotate. A control box 27 is provided on one side of the hydraulic box 16, and an operating table 28 is provided on the top of the control box 27. A touch screen 29 is embedded on the top of the operating table 28. The control table 608 in the control component 6 is provided at the bottom of the control box 27. The control component 6 is composed of a central The processing module 601, the height detection module 602, the DP network module 603, the speed monitoring module 604, the analysis and processing module 605, the relief valve adjustment module 606, the feedback output module 607 and the control console 608 are composed of the input end of the height detection module 602 controlling the output end of the encoder body 17, the speed monitoring module 604 controlling the connection of the first motor 25 and the second motor 26 respectively, the relief valve adjustment module 606 controlling the input end of the relief valve, the feedback output module 607 and the central processing module 601 both controlling the connection of the touch screen 29, and the touch screen 29 is used to input the control instructions. The control console 608 is provided with a central processing module 601 at the top center, and a height detection module 602, a DP network module 603 and a speed monitoring module 604 are provided on one side of the top of the control console 608, and an analysis and processing module 605, a relief valve adjustment module 606 and a feedback output module 607 are provided on the other side of the top of the control console 608, and the input end of the feedback output module 607 is controlled to be connected to the output end of the central processing module 601, and the output end of the central processing module 601 is controlled to be connected to the analysis and processing module 605. The input end of the analysis and processing module 605 is connected to the input end of the analysis and processing module 605, and the output end of the analysis and processing module 605 controls the input end of the central processing module 601, and the input end of the central processing module 601 controls the output ends of the DP network module 603 and the speed monitoring module 604 respectively, and the input end of the DP network module 603 controls the output end of the height detection module 602. The DP network module 603 is used to facilitate the transmission of the height information of the looper frame 1 detected by the encoder body 17 to the central processing module 601.

[0030] See also Fig.10 , an embodiment of the present invention provides: a rewinding unit loop control method, comprising the following steps: step one, loop traction; step two, empty loop operation; step three, tension control;

[0031] In the above step 1, firstly, the first connecting ring 4 is sleeved on the second connecting ring 5, and one end of the traction chain 7 is fixed on the top of the loop frame 1, and then the traction chain 7 is wound around the traction wheel group 8, and the other end of the traction chain 7 is fixed on the output end of the traction hydraulic cylinder 14, and then the traction belt 24 is wound around the first roller body 20, the driven roller 23 and the second roller body 21 in sequence, and then the first motor 25 and the second motor 26 respectively drive the first rotating shaft 18 and the second rotating shaft 19 to rotate, so that the first roller body 20 and the second roller body 21 drive the traction belt 24 to move, and the driven roller 23 is driven to rotate by the traction belt 24, and the hydraulic box 16 provides hydraulic power, so that the traction hydraulic cylinder 14 pulls the traction chain 7, and then drives the loop frame 1 to move up and down along the vertical direction;

[0032] In the above step 2, when the equipment is running in an empty sleeve, the traction hydraulic cylinder 14 is in a non-operating state, and then the output power of the first motor 25 and the second motor 26 is adjusted so that the speed of the first roller 20 is V 入 , while the second roller 21 has a rotation speed of V 入 +0.5m / min, using the speed difference between the first roller body 20 and the second roller body 21 to move the loop frame 1 downward, so that the loop frame 1 falls on the limiting column 12, and at the same time, using the cooperation between the limiting groove 13 and the limiting platform 2, the loop frame 1 is limited to prevent the loop frame 1 from deviating during the empty loop operation and affecting the running accuracy of the roller system;

[0033] Among them, in the above step three, during the operation of the equipment, the encoder body 17 detects the height information of the loop frame 1, and then transmits the height information to the height detection module 602, and then the DP network module 603 transmits the height information to the central processing module 601, and at the same time, the speed monitoring module 604 detects the operating power of the first motor 25 and the second motor 26, and then transmits it to the central processing module 601, and then the central processing module 601 transmits the height information and the operating power of the first motor 25 and the second motor 26 to the analysis and processing module 605, and then the analysis and processing module 605 calculates the rotation speed of the first roller body 20 and the second roller body 21 in combination with the operating power of the first motor 25 and the second motor 26, and calculates the overflow pressure in combination with the height information, and then transmits the adjustment instruction to the overflow valve adjustment module 606, and then the overflow valve adjustment module 606 instructs the overflow valve to adjust the overflow pressure in the hydraulic pipeline 15 to reduce the local hydraulic pressure, reduce the tension change of the traction belt 24, and avoid the occurrence of steel belt waves during the operation of the loop frame 1.

[0034] Based on the above, the advantage of the present invention is that when the present invention is used, a limit groove 13 is provided on the top of the limit column 12 to support and limit the limit platform 2 and the loop frame 1, so as to prevent the loop frame 1 from being offset during empty loop operation, thereby ensuring the operation accuracy of the roller system and improving the working stability of the equipment. The set sliding column 302, guide wheel platform 303 and guide roller 306 cooperate with the guide frame 10 to guide the running loop frame 1, and at the same time, the impact generated during the operation of the equipment is buffered by squeezing and stretching the buffer spring 304 to prevent the loop frame 1 from being deformed and damaged by the impact, thereby extending the service life of the equipment. During the operation of the equipment, the encoder body 17 detects the height information of the loop frame 1, and then transmits the height information to the height detection module 602, and then the DP network module 603 transmits the height information to the height detection module 602. The information is transmitted to the central processing module 601, and the speed monitoring module 604 detects the operating power of the first motor 25 and the second motor 26, and then transmits it to the central processing module 601. Then the central processing module 601 transmits the height information and the operating power of the first motor 25 and the second motor 26 to the analysis and processing module 605. Then the analysis and processing module 605 calculates the rotation speed of the first roller 20 and the second roller 21 based on the operating power of the first motor 25 and the second motor 26, and calculates the overflow pressure based on the height information. Then the adjustment instruction is transmitted to the overflow valve adjustment module 606, and the overflow valve adjustment module 606 instructs the overflow valve to adjust the overflow pressure in the hydraulic pipeline 15 to reduce the local hydraulic pressure, reduce the tension change of the traction belt 24, and avoid the occurrence of steel belt waves during the operation of the loop frame 1.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A rewinding unit looper device, comprising a looper frame (1), a limiter platform (2), a buffer guide component (3) and a regulating component (6), characterized in that: A limiting platform (2) is arranged at the bottom of the loop frame (1), and first connecting rings (4) are arranged at the four corners of the top of the loop frame (1), a second connecting ring (5) is sleeved on the first connecting ring (4), and the top of the second connecting ring (5) is fixedly connected to one end of a traction chain (7), the traction chain (7) is wound around a traction wheel group (8), and the traction wheel group (8) is matched and connected to a support frame (9), the support frame (9) is fixedly mounted on a guide frame (10), and the bottom of the guide frame (10) is fixed to the top of a bottom plate (11), a limiting column (12) is arranged on the top of the bottom plate (11), and the limiting column (12) is located directly below the limiting platform (2), and a limiting groove (13) is provided on the top of the limiting column (12); A traction hydraulic cylinder (14) is provided at the four corners of the top of the bottom plate (11), and the output end of the traction hydraulic cylinder (14) is fixedly connected to the other end of the traction chain (7), the input end of the traction hydraulic cylinder (14) is cooperatively connected to a hydraulic pipeline (15), and a relief valve is provided on the hydraulic pipeline (15), one end of the hydraulic pipeline (15) is cooperatively connected to the output end of a hydraulic box (16), and the hydraulic box (16) is fixed to one side of the bottom plate (11).

2. A rewinding unit looper device according to claim 1, characterized in that: The loop frame (1) is provided with an encoder body (17), and the loop frame (1) is provided with a buffering groove (301) in a buffering guide assembly (3), the buffering guide assembly (3) is composed of a buffering groove (301), a sliding column (302), a guide wheel platform (303), a buffering spring (304), a guide wheel bracket (305) and a guide roller (306), the buffering groove (301) is slidably connected with a sliding column (302), and a guide wheel platform (303) is provided at one end of the sliding column (302) away from the loop frame (1).

3. A rewinding unit looper device according to claim 2, characterized in that: A buffer spring (304) is provided on one side of the guide wheel platform (303), and one end of the buffer spring (304) is fixedly connected to the loop frame (1), and the sliding column (302) is located inside the buffer spring (304). A guide wheel bracket (305) is symmetrically provided on the other side of the guide wheel platform (303), and a guide roller (306) is rotatably connected to the guide wheel bracket (305) via a rotating shaft, and the guide roller (306) is rollingly connected to one side of the guide frame (10).

4. A rewinding unit looper device according to claim 3, characterized in that: A first bracket and a second bracket are respectively arranged on the top of the loop frame (1), and a first rotating shaft (18) and a second rotating shaft (19) are rotatably connected to the first bracket and the second bracket via bearings, and a first roller body (20) and a second roller body (21) are respectively sleeved on the first rotating shaft (18) and the second rotating shaft (19), and a third bracket is arranged on both sides of the loop frame (1), and a third rotating shaft (22) is rotatably connected to the third bracket via bearings, and a driven roller (23) is arranged on the third rotating shaft (22), and a traction belt (24) is wound around the driven roller (23), the first roller body (20) and the second roller body (21).

5. A rewinding unit looper device according to claim 4, characterized in that: A first base and a second base are respectively arranged on both sides of the looper frame (1), and a first motor (25) and a second motor (26) are respectively arranged on the first base and the second base, and the output ends of the first motor (25) and the second motor (26) are respectively fixedly connected to one end of the first rotating shaft (18) and the second rotating shaft (19).

6. The rewinding unit looper device according to claim 1, characterized in that: A control box (27) is provided on one side of the hydraulic box (16), and an operating table (28) is provided on the top of the control box (27). A touch screen (29) is embedded and installed on the top of the operating table (28). A control table (608) in a control component (6) is provided at the bottom of the control box (27). The control component (6) is composed of a central processing module (601), a height detection module (602), a DP network module (603), a speed monitoring module (604), an analysis and processing module (605), a relief valve adjustment module (606), a feedback output module (607) and the control table (608). The input end of the height detection module (602) controls the connection to the output end of the encoder body (17), the speed monitoring module (604) controls the connection to the first motor (25) and the second motor (26), respectively, the relief valve adjustment module (606) controls the connection to the input end of the relief valve, and the feedback output module (607) and the central processing module (601) both control the connection to the touch screen (29).

7. A rewinding unit looper device according to claim 6, characterized in that: A central processing module (601) is arranged at the center of the top of the control console (608), and a height detection module (602), a DP network module (603) and a speed monitoring module (604) are arranged on one side of the top of the control console (608), and an analysis and processing module (605), a relief valve adjustment module (606) and a feedback output module (607) are arranged on the other side of the top of the control console (608), and the input end of the feedback output module (607) is controlled to be connected to the output end of the central processing module (601), and the central processing module The output end of (601) controls the input end of the connection analysis and processing module (605), and the output end of the connection analysis and processing module (605) controls the input end of the connection analysis and processing module (605), the output end of the connection analysis and processing module (605) controls the input end of the connection central processing module (601), and the input end of the central processing module (601) controls the output ends of the connection DP network module (603) and the speed monitoring module (604), respectively, and the input end of the DP network module (603) controls the output end of the connection height detection module (602).

8. A rewinding unit loop control method, comprising the following steps: Step 1: looper traction; Step 2: empty looper operation; Step 3: tension control; It is characterized by: In the above step 1, firstly, the first connecting ring (4) is sleeved on the second connecting ring (5), and one end of the traction chain (7) is fixed on the top of the loop frame (1), then the traction chain (7) is wound around the traction wheel group (8), and the other end of the traction chain (7) is fixed on the output end of the traction hydraulic cylinder (14), and then the traction belt (24) is wound around the first roller body (20), the driven roller (23) and the second roller body (21) in sequence, and then the first motor (25) and the second motor (26) respectively drive the first rotating shaft (18) and the second rotating shaft (19) to rotate, so that the first roller body (20) and the second roller body (21) drive the traction belt (24) to move, and the driven roller (23) is driven to rotate by the traction belt (24), and the hydraulic box (16) provides hydraulic power, so that the traction hydraulic cylinder (14) pulls the traction chain (7), thereby driving the loop frame (1) to move up and down along the vertical direction; In the above step 2, when the equipment is running in an empty sleeve, the traction hydraulic cylinder (14) is in a non-operating state, and then the output power of the first motor (25) and the second motor (26) is adjusted to make the rotation speed of the first roller (20) Vin, and the rotation speed of the second roller (21) Vin+0.5m / min, and the speed difference between the first roller (20) and the second roller (21) is used to move the loop frame (1) downward, so that the loop frame (1) falls on the limiting column (12), and at the same time, the limiting groove (13) and the limiting platform (2) cooperate with each other to limit the loop frame (1) to prevent the loop frame (1) from being offset during the empty sleeve operation and affecting the operation accuracy of the roller system; In the above step 3, during the operation of the device, the encoder body (17) detects the height information of the loop frame (1), and then transmits the height information to the height detection module (602), and then the DP network module (603) transmits the height information to the central processing module (601), and at the same time, the speed monitoring module (604) detects the operating power of the first motor (25) and the second motor (26), and then transmits it to the central processing module (601), and then the central processing module (601) transmits the height information and the operating power of the first motor (25) and the second motor (26) to the central processing module (601). The information is input to the analysis and processing module (605), which then calculates the rotation speed of the first roller (20) and the second roller (21) in combination with the operating power of the first motor (25) and the second motor (26), and calculates the overflow pressure in combination with the height information. The adjustment instruction is then transmitted to the overflow valve adjustment module (606), and the overflow valve adjustment module (606) instructs the overflow valve to adjust the overflow pressure in the hydraulic pipeline (15) to reduce the local hydraulic pressure, reduce the tension change of the traction belt (24), and avoid the occurrence of steel belt waves during the operation of the loop frame (1).

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