An air cushion furnace strip tension control device

Abstract

The present invention discloses an air cushion furnace strip tension control device, which belongs to the field of copper strip heat treatment equipment. The floating roller on the frame includes a main roller and two additional rollers. The additional roller has the same outer diameter as the main roller. The additional roller is composed of two first tube sheets and two second tube sheets that are alternately arranged in the circumferential direction and spliced ​​in sequence. A connecting arm is provided on the inner side of the first tube sheet along the radial direction of the main roller. A first adjusting component for adjusting the radial sliding of the first tube sheet along the main roller is provided between the connecting arm and the rotating shaft of the main roller. A support frame is fixedly provided on the end face of the main roller. A second adjusting component for adjusting the radial sliding of the second tube sheet along the main roller is provided between the second tube sheet and the support frame. A sliding tube is provided on the rotating shaft of the main roller for axial sliding. The sliding tube is used to drive the first adjusting component. A driving component for driving the sliding tube to slide axially is provided between the sliding tube and the frame, which solves the shortcomings of the tension control device in the prior art for adjusting the tension at the copper strip connection seam.

Description

Technical Field

[0001] The invention belongs to the technical field of copper strip heat treatment equipment, and in particular relates to a strip tension control device for an air cushion furnace. Background Art

[0002] During the annealing process in the air cushion furnace of a continuous copper strip processing line, the control of the tension in front of the furnace (entry section tension) and the tension in the back of the furnace (exit section tension) is one of the core links in the design of the entire tension system. They work together with the air cushion tension in the furnace to ensure stable operation of the strip, obtain good plate shape and performance, and especially protect fragile connection points.

[0003] For the connection seam, whether it is a welded joint or a mechanical connection, even with the best welding process, the strength (tensile strength, yield strength) of the welded joint is usually lower than that of the original copper strip base material. The change in the grain structure of the heat-affected zone of the weld makes it a weak point in mechanical properties. The strength of mechanical connections is usually lower and more prone to failure under concentrated stress. If the tension is set or controlled improperly, the tension applied to the connection may exceed its actual strength limit, resulting in fracture. The floating roller of the tension control device in the prior art adjusts the tension of the copper strip as a whole in the width direction, and the fracture of the copper strip generally starts from the edge. Therefore, for the tension control of the copper strip, while ensuring the support tension of the copper strip flow, reducing the tension of the copper strip edge at the copper strip connection seam can effectively avoid the risk of fracture at the copper strip connection. Based on this, the tension control device of the prior art needs further improvement. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the prior art in the process of adjusting the tension of copper strips and to propose a device for controlling the tension of strips in an air cushion furnace.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a strip tension control device for an air cushion furnace, comprising a tension adjustment mechanism arranged before the entrance and after the exit of the air cushion furnace, the tension adjustment mechanism comprising a first support roller, a second support roller and a floating roller arranged on a frame, the floating roller being located between the first support roller and the second support roller, a guide drive mechanism being arranged between the floating roller and the frame, the guide drive mechanism being used to drive the floating roller to slide up and down along the frame, the floating roller comprising a main roller and two additional rollers, the two additional rollers being symmetrically arranged about the main roller, the additional roller being coaxially arranged with the main roller, the additional roller having the same outer diameter as the main roller, and the additional roller being composed of two second rollers. A pipe segment and two second pipe segments are arranged alternately in the circumferential direction and spliced ​​in sequence. A connecting arm is provided on the inner side of the first pipe segment along the radial direction of the main roller. A first adjusting component is provided between the connecting arm and the rotating shaft of the main roller. The first adjusting component is used to adjust the radial sliding of the first pipe segment along the main roller. A support frame is fixedly provided on the end face of the main roller. A second adjusting component is provided between the second pipe segment and the support frame. The second adjusting component is used to adjust the radial sliding of the second pipe segment along the main roller. A sliding tube is provided on the rotating shaft of the main roller for axial sliding. The sliding tube is used to drive the first adjusting component. A driving component is provided between the sliding tube and the frame. The driving component is used to drive the sliding tube to slide axially.

[0006] As a further description of the above technical solution: the plane where the axis of the rotating shaft and the central axis of the connecting arm are located is parallel to the splicing matching surface of the first pipe segment and the second pipe segment.

[0007] As a further description of the above technical solution: a through hole is provided on the rotating shaft, the connecting arm is inserted into the through hole, the first adjusting component includes a driving column and a driving guide block arranged at the end of the connecting arm, the axis of the driving column is perpendicular to the length direction of the connecting arm, the axis of the driving column is perpendicular to the axis of the rotating shaft, the driving guide block is fixedly provided on the sliding tube, and a guide groove is provided on the driving guide block, the driving column slides in the guide groove, when the sliding tube moves toward the main roller, the sliding tube drives the driving guide block to move, the driving column drives the connecting arm to move under the action of the guide groove, and the connecting arm drives the first pipe segment to move toward the rotating shaft.

[0008] As a further description of the above technical solution: the second adjustment component includes a guide column arranged along the radial direction of the main roller, the guide column is slidably passed through the support frame, one end of the guide column is fixed to the inner side surface of the second pipe segment, and the other end is provided with a blocking plate, and a first spring is sleeved on the guide column, the first spring is located between the blocking plate and the support frame, and the first spring is in a compressed state.

[0009] As a further description of the above technical solution: the guide column is a polygonal column.

[0010] As a further description of the above technical solution: the driving assembly includes a conical disk and a push block, the conical disk is coaxially arranged at the end of the sliding tube away from the main roller, the push block cooperates with the conical surface of the conical disk, a first cylinder is provided on the frame, the output end of the first cylinder is connected to the push block, a return spring is sleeved on the rotating shaft, and the return spring is located between the sliding tube and the main roller.

[0011] As a further description of the above technical solution: a support assembly is provided between the two first pipe segments, and the support assembly is used to stably support the two first pipe segments. The support assembly includes two support tubes, and the two support tubes correspond to the two first pipe segments one by one. The support tubes are parallel to the connecting arms, and the two support tubes are centrally symmetrical. The rear ends of the support tubes are fixed on the corresponding first pipe segments, and the support tubes are slidably passed through the support frame. A limit block is provided for sliding at the front end of the support tube, and the sliding direction of the limit block is parallel to the axial direction of the rotating shaft. A sliding hole is provided on the support tube, and the limit block is slidably passed through the sliding hole. A guide bolt is provided at the rear end of the limit block, and the guide bolt is slidably passed through the support tube. The head of the guide bolt is located outside the support tube, and a second spring is sleeved on the guide bolt. The second spring is located between the inner side of the support tube and the limit block. A trigger hole is opened on the limit block, and a trigger block is slidingly arranged in the trigger hole. The contact surface between the trigger hole and the trigger block is an inclined surface, and a trigger screw is provided at the rear end of the trigger block. The trigger screw is perpendicular to the support rod. A driving block is provided on the sliding tube, and a trigger surface inclined downward is provided on the surface of the driving block facing the support tube. The trigger surface corresponds to the head of the trigger screw. When the sliding tube moves toward the main roller, the driving block drives the trigger block to move toward the inside of the support tube, thereby driving the limit block to slide through the sliding hole into the support tube, so that the two support tubes can slide relative to each other.

[0012] As a further description of the above technical solution: there are four support assemblies, and the four support assemblies are distributed in a rectangular shape.

[0013] As a further description of the above technical solution: the guide drive mechanism includes a linear bearing, a guide rail and a second cylinder arranged on the frame, the guide rail is vertically fixed on the frame, the linear bearing is slidably arranged on the guide rail, the bearing seat of the rotating shaft is fixedly connected to the linear bearing, the second cylinder is located below the floating roller, and the output end of the second cylinder is connected to the bearing seat of the rotating shaft.

[0014] As a further description of the above technical solution: the frame is also provided with a CCD industrial area array camera for detecting the connecting seam of the copper strip and a tension sensor for measuring the tension of the copper strip. The CCD industrial area array camera is arranged between the first support roller and the floating roller, and the tension sensor is arranged in front of the tension adjustment mechanism. The CCD industrial area array camera and the tension sensor are both communicatively connected to the controller. The controller generates a control instruction according to the tension signal. The controller generates a control signal according to the image data and based on a preset algorithm. The control signal generated by the controller is used to control the movement of the floating roller and the sliding tube.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] (1) The air cushion furnace strip tension control device of the present application can ensure that the tension of the copper strip entering and flowing out of the air cushion furnace can be adjusted normally. At the same time, for the copper strip section in the connection seam area, the tension on the front and rear sides of the copper strip in the area can be made smaller, thereby effectively avoiding cracking of the copper strip caused by edge stress changes at the connection seam.

[0017] (2) While the two first pipe segments move toward each other and toward the rotation axis, the second pipe segment can be adaptively adjusted and moved under the action of the second adjustment component, so that the first pipe segment and the second pipe segment can be adjusted simultaneously as a whole, ensuring the consistency of the adjustment.

[0018] (3) The support assembly can support the two first segments to each other, ensuring the stability of normal tension adjustment and the circularity of the additional roller.

[0019] (4) The guide column is set in a polygonal column shape to ensure that the first pipe segment does not rotate during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a side view of the present invention, without showing the air cushion furnace;

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention from another angle, without showing the air cushion furnace;

[0023] Figure 4 This is a cross-sectional view of the additional roller of the present invention, with the cross-sectional plane being the center plane of the first segment;

[0024] Figure 5 Exploded view of the additional roller of the present invention;

[0025] Figure 6 A cross-sectional view of a support tube for an additional roller of the present invention;

[0026] Figure 7 This is a cross-sectional view of the support tube of the additional roller of the present invention, where the cut surface is a cross section;

[0027] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0028] Figure 9 This is an end view of the working state of the additional roller of the present invention supporting the copper strip;

[0029] Figure 10 This is an end view of the working state in which the additional roller of the present invention does not support the copper strip.

[0030] Legend: 1. Air cushion furnace; 2. Copper belt; 3. Frame; 4. First support roller; 5. Second support roller; 6. Linear bearing; 7. Guide rail; 8. Second cylinder; 9. Rotating shaft; 10. First tube segment; 11. Second tube segment; 12. Connecting arm; 13. Sliding tube; 14. Through hole; 15. Clearance hole; 16. Driving column; 17. Driving guide block; 18. Guide groove; 19. Straight groove; 20. Inclined groove; 21. Conical disk; 22. Push block; 23. First cylinder; 24. Return spring; 25. Support frame; 26. Guide column; 27. Blocking plate; 28. First spring; 29. ​​Support tube; 30. Limit block; 31. Guide bolt; 32. Second spring; 33. Trigger hole; 34. Trigger block; 35. Trigger screw; 36. Driving block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0032] See also Figure 1-10 The present invention provides a technical solution for an air cushion furnace strip tension control device:

[0033] A device for controlling the strip tension of an air cushion furnace comprises a tension adjustment mechanism arranged before the entrance and after the exit of the air cushion furnace 1. The tension adjustment mechanism comprises a first support roller 4, a second support roller 5 and a floating roller arranged on a frame 3. The floating roller is located between the first support roller 4 and the second support roller 5. A guide drive mechanism is provided between the floating roller and the frame 3. The guide drive mechanism is used to drive the floating roller to slide up and down along the frame 3.

[0034] The guide drive mechanism includes a linear bearing 6, a guide rail 7 and a second cylinder 8 arranged on the frame 3. The two guide rails 7 are symmetrically arranged about the floating roller. The guide rails 7 are vertically fixed on the frame 3. Two linear bearings 6 are slidingly arranged on each guide rail 7. The bearing seat of the rotating shaft 9 is fixedly connected to the linear bearing 6. The second cylinder 8 is located below the floating roller. Specifically, the bearing seats at both ends of the rotating shaft 9 are connected by a connecting rod. Multiple second cylinders 8 are arranged at equal intervals along the length direction of the connecting rod. The output end of the second cylinder 8 is connected to the connecting rod. The second cylinder 8 is fixed on the frame 3. A controller is also provided on the frame 3. The controller controls the movement of the output end of the second cylinder 8, thereby driving the floating roller to move along the guide rail 7.

[0035] The floating roller includes a main roller and two additional rollers. The two additional rollers are symmetrically arranged about the main roller. The additional rollers are coaxially arranged with the main roller. The additional rollers have the same outer diameter as the main roller. The additional rollers are composed of two first tube segments 10 and two second tube segments 11 that are alternately arranged circumferentially and spliced ​​in sequence.

[0036] A connecting arm 12 is fixedly mounted on the inside of the first segment 10 along the radial direction of the main roller. The plane where the axis of the rotating shaft 9 and the central axis of the connecting arm 12 lie is parallel to the mating surface between the first segment 10 and the second segment 11. A first adjustment assembly is provided between the connecting arm 12 and the rotating shaft 9 of the main roller. This first adjustment assembly is used to adjust the radial sliding of the first segment 10 along the main roller. A sliding tube 13 is provided on the rotating shaft 9 of the main roller to slide axially and is used to drive the first adjustment assembly. A through hole 14 is provided on the rotating shaft 9, and a clearance hole 15 is provided on the sliding tube 13. The clearance hole 15 corresponds to the through hole 14. The connecting arm 12 is passed through the through hole 14 and the clearance hole 15. The first adjustment component includes a driving column 16 and a driving guide block 17 arranged at the end of the connecting arm 12. The axis of the driving column 16 is perpendicular to the length direction of the connecting arm 12, and the axis of the driving column 16 is perpendicular to the axis of the rotating shaft 9. Two driving columns 16 are provided on the connecting arm 12, and the two driving columns 16 are symmetrically arranged about the connecting arm 12. The corresponding sliding tube 13 is provided with two driving guide blocks 17, and the two driving guide blocks 17 are symmetrically arranged about the connecting arm 12. A guide groove 18 begins to be provided on the driving guide block 17, and the driving column 16 slides in the guide groove 18. When the sliding tube 13 moves toward the main roller, the sliding tube 13 drives the driving guide block 17 to move. The driving column 16 drives the connecting arm 12 to move under the action of the guide groove 18, and the connecting arm 12 drives the first pipe segment 10 to move toward the rotating shaft 9.

[0037] The guide slot 18 consists of a straight slot 19 along the axis of the rotating shaft 9 and an oblique slot 20 at an angle to the axis of the rotating shaft 9. When the drive post 16 moves within the straight slot 19, the connecting arm 12 does not move. When the drive post 16 moves within the oblique slot 20, the connecting arm 12 moves. The connecting arms 12 on the two first segments 10 and the corresponding first adjustment assemblies are symmetrical about the center of the rotating shaft 9. Under the action of the sliding tube 13, the two first segments 10 retract or expand simultaneously.

[0038] A drive assembly is provided between the sliding tube 13 and the frame 3, and is used to drive the sliding tube 13 to slide axially. The drive assembly includes a conical disc 21 and a push block 22. The conical disc 21 is coaxially arranged at the end of the sliding tube 13 away from the main roller, and the push block 22 engages with the conical surface of the conical disc 21. A first cylinder 23 is provided on the frame 3, and the output end of the first cylinder 23 is connected to the push block 22. A return spring 24 is sleeved on the rotating shaft 9 and is located between the sliding tube 13 and the main roller. The first cylinder 23 is electrically connected to a controller, which controls the extension or contraction of the output end of the first cylinder 23.

[0039] A support frame 25 is fixedly mounted on the end face of the main roller. A second adjustment assembly is disposed between the second segment 11 and the support frame 25. The second adjustment assembly is used to adjust the radial sliding direction of the second segment 11 along the main roller. The second adjustment assembly includes a guide post 26 disposed along the radial direction of the main roller. The guide post 26 is a polygonal prism. In this embodiment, the guide post 26 is a hexagonal prism. The guide post 26 slides through the support frame 25. One end of the guide post 26 is fixed to the inner side of the second segment 11, and the other end is provided with a stop plate 27. A first spring 28 is sleeved on the guide post 26 and is located between the stop plate 27 and the support frame 25. The first spring 28 is in a compressed state.

[0040] A support assembly is provided between the two first pipe segments 10. There are four support assemblies, which are distributed in a rectangular shape. The support assembly is used to stably support the two first pipe segments 10. The support assembly includes two support tubes 29. The two support tubes 29 correspond to the two first pipe segments 10 one by one. The support tubes 29 are parallel to the connecting arms 12. The two support tubes 29 are centrally symmetrical. The rear ends of the support tubes 29 are fixed to the corresponding first pipe segments 10. The support tubes 29 are slidably passed through the support frame 25. The front end of the support tube 29 is provided with a limit block 30 for sliding. The sliding direction of the limit block 30 is parallel to the axial direction of the rotating shaft 9. A sliding hole is provided on the support tube 29. The limit block 30 is slidably passed through the sliding hole. The rear end of the limit block is provided with a guide bolt 31. The guide bolt 31 is slidably passed through the support tube 2 9, the head of the guide bolt 31 is located outside the support tube 29, and a second spring 32 is sleeved on the guide bolt 31. The second spring 32 is located between the inner side of the support tube 29 and the limit block 30. A trigger hole 33 is opened on the limit block 30, and a trigger block 34 is slidingly arranged in the trigger hole 33. The contact surface between the trigger hole 33 and the trigger block 34 is an inclined surface. A trigger screw 35 is provided at the rear end of the trigger block 34, and the trigger screw 35 is perpendicular to the support rod. A driving block 36 is provided on the sliding tube 13, and a trigger surface inclined downward is provided on the surface of the driving block 36 facing the support tube 29, and the trigger surface corresponds to the head of the trigger screw 35. When the sliding tube 13 moves toward the main roller, the driving block 36 drives the trigger block 34 to move toward the inside of the support tube 29, thereby driving the limit block 30 to slide through the sliding hole into the support tube 29.

[0041] The frame 3 is also provided with a CCD industrial area array camera (not shown in the figure) for detecting the connection seam of the copper strip 2 and a tension sensor (not shown in the figure) for measuring the tension of the copper strip 2. The CCD industrial area array camera is arranged between the first support roller 4 and the floating roller, and the tension sensor is arranged in front of the tension adjustment mechanism. The CCD industrial area array camera and the tension sensor are both communicatively connected to the controller. The controller generates a control instruction according to the tension signal. The controller generates a control signal according to the image data and based on a preset algorithm. The control signal generated by the controller is used to control the movement of the floating roller and the sliding tube 13.

[0042] Working principle: The copper strip 2 passes through the tension adjustment mechanism in front of the entrance of the air cushion furnace 1 and then passes through the sealing roller to enter the air cushion furnace 1. After heat treatment, it flows out from the tension adjustment mechanism at the outlet of the air cushion furnace 1.

[0043] For the copper strip section without joints, the floating roller performs normal tension control. During this process, the status of the additional rollers at both ends of the main roller is as follows: Figure 3As shown, the first and second segments 10, 11 form a circular tube with the same outer diameter as the main roller. The drive post 16 on the connecting arm 12 is located within the straight groove 19 of the corresponding drive guide block 17. The limit blocks 30 on the two support tubes 29 of the support assembly are both located within the sliding holes. The two support tubes 29 remain stable, thereby stably supporting the two first segments 10. Because the splicing surface of the first and second segments 10, 11 is perpendicular to the cross-section of the guide post 26, the two second segments 11 are kept away from each other by the support of the two first segments 10. The first spring 28, the second spring 32, and the return spring 24 are all in a compressed state.

[0044] According to the signal collected by the tension sensor and the image information of the CCD industrial area array camera, since the CCD industrial area array camera did not capture the image of the connecting seam, when the tension of the copper strip 2 changes during this process, the control signal generated by the controller drives the output end of the first cylinder 23 to contract while the output end of the second cylinder 8 to extend, or when the output end of the first cylinder 23 contracts and extends, the output end of the second cylinder 8 to contract.

[0045] In this process, the additional roller and the main roller always form a complete round roller.

[0046] When the copper strip 2 with a seam is about to enter the tension adjustment mechanism, a CCD industrial area array camera first captures a picture of the seam. The controller generates a control signal based on this image signal. This control triggers the extension of the output shaft of the first cylinder 23 and the output shaft of the second cylinder 8, causing the entire floating roller to move upward, reducing the tension in front and behind the seam of the copper strip 2. During this process, the rotating shaft 9 rises, and the push block 22 driven by the first cylinder 23 moves the conical disc 21, which in turn drives the sliding tube 13 toward the main roller, further compressing the return spring 24. During this process, when the driving column 16 moves along the straight groove 19 of the driving guide block 17, the trigger screw 35 and the trigger block 34 move under the pushing action of the driving block 36. Since the contact surface between the trigger hole 33 on the limit block 30 and the trigger block 34 is an inclined surface, the trigger block 34 pushes the limit block 30 to move, and the second spring 32 is compressed. When the limit block 30 moves into the support tube 29, the driving column 16 also moves into the inclined groove 20. In the absence of the limiting action of the support tube 29, as the sliding tube 13 continues to move, the inclined groove 20 of the driving guide block 17 drives the driving column 16 and the connecting arm 12 to drive the two first pipe segments 10 to move toward each other. When the splicing mating surface of the first pipe segment 10 and the second pipe segment 11 contacts the inner surface of the second pipe segment 11, and as it continues to move toward the rotating shaft 9, the second pipe segment 11 moves toward the rotating shaft 9 under the action of the first spring 28. When the push block 22 stops, the first pipe segment 10 and the second pipe segment 11 maintain their moved positions and continue to rotate with the main roller. At this time, the overall tension of the copper strip 2 is reduced, and the copper strip 2 corresponding to the additional roller has less tension in this area because it is not supported by the first pipe segment 10 and the second pipe segment 11. When the copper strip 2 with a connecting seam section passes through the floating roller, the controller controls the first cylinder 23 to contract, and under the action of the reset spring 24, the sliding tube 13 is reset. During this process, the driving column 16 on the connecting arm 12 moves along the guide groove 18, the first pipe segment 10 is reset, and the second pipe segment 11 is also reset under the action of the second spring 32.

[0047] It should be noted that the tension sensor, CCD industrial area array camera, controller, and their interconnection methods mentioned in this application are all prior art. Because the first and second segments 10 and 11 do not support the copper strip segments at the joint, indentations may occur in this area under the action of the main rollers. Since the copper strip segments in the joint will need to be cut and recycled during subsequent roll retraction, indentations in this area do not affect product quality.

[0048] The above description is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and all of these should be covered by the protection scope of the present invention.

Claims

1. An air cushion furnace strip tension control device, comprising a tension adjustment mechanism arranged before the entrance and after the exit of the air cushion furnace (1), the tension adjustment mechanism comprising a first support roller (4), a second support roller (5) and a floating roller arranged on a frame (3), the floating roller being located between the first support roller (4) and the second support roller (5), a guide drive mechanism being arranged between the floating roller and the frame (3), the guide drive mechanism being used to drive the floating roller to slide up and down along the frame (3), and characterized in that: The floating roller comprises a main roller and two additional rollers, the two additional rollers are symmetrically arranged about the main roller, the additional rollers are coaxially arranged with the main roller, the additional rollers have the same outer diameter as the main roller, the additional rollers are composed of two first tube segments (10) and two second tube segments (11) arranged alternately in the circumferential direction and spliced ​​in sequence, a connecting arm (12) is provided on the inner side of the first tube segment (10) along the radial direction of the main roller, a first adjusting component is provided between the connecting arm (12) and the rotating shaft (9) of the main roller, the first adjusting component is used to adjust the first tube segment (10) along the radial direction of the main roller The roller slides radially, a support frame (25) is fixedly provided on the end surface of the main roller, a second adjustment component is provided between the second pipe segment (11) and the support frame (25), and the second adjustment component is used to adjust the second pipe segment (11) to slide radially along the main roller, a sliding tube (13) is provided on the rotating shaft (9) of the main roller to slide axially, and the sliding tube (13) is used to drive the first adjustment component, and a driving component is provided between the sliding tube (13) and the frame (3), and the driving component is used to drive the sliding tube (13) to slide axially; A through hole (14) is provided on the rotating shaft (9), and the connecting arm (12) is inserted into the through hole (14). The first adjustment component includes a driving column (16) and a driving guide block (17) provided at the end of the connecting arm (12). The axis of the driving column (16) is perpendicular to the length direction of the connecting arm (12), and the axis of the driving column (16) is perpendicular to the axis of the rotating shaft (9). The driving guide block (17) is fixedly provided on the sliding tube (13). A guide groove (18) is provided on the driving guide block (17). The driving column (16) slides in the guide groove (18). When the sliding tube (13) moves toward the main roller, the sliding tube (13) drives the driving guide block (17) to move. The driving column (16) drives the connecting arm (12) to move under the action of the guide groove (18), and the connecting arm (12) drives the first pipe segment (10) to move toward the rotating shaft (9). A support assembly is provided between the two first pipe segments (10), and the support assembly is used to stably support the two first pipe segments (10). The support assembly includes two support tubes (29), and the two support tubes (29) correspond to the two first pipe segments (10) one by one. The support tubes (29) are parallel to the connecting arms (12), and the two support tubes (29) are centrally symmetrical. The rear ends of the support tubes (29) are fixed to the first pipe segments (10) corresponding thereto, and the support tubes (29) are slidably penetrated on the support frame (25). A limit block (30) is slidably provided at the front end of the support tube (29), and the sliding direction of the limit block (30) is parallel to the axial direction of the rotating shaft (9). A sliding hole is provided on the support tube (29), and the limit block (30) is slidably penetrated in the sliding hole. A guide bolt (31) is provided at the rear end of the limit block, and the guide bolt (31) is slidably penetrated on the support tube (29). The head portion of the guide bolt (31) is provided. A second spring (32) is sleeved on the guide bolt (31) outside the support tube (29). The second spring (32) is located between the inner side surface of the support tube (29) and the limit block (30). A trigger hole (33) is opened on the limit block (30). A trigger block (34) is slidably arranged in the trigger hole (33). The contact surface between the trigger hole (33) and the trigger block (34) is an inclined surface. A trigger screw (35) is arranged at the rear end of the trigger block (34). The trigger screw (35) is perpendicular to the support rod. A driving block (36) is arranged on the sliding tube (13). A trigger surface inclined downward is arranged on the surface of the driving block (36) facing the support tube (29). The trigger surface corresponds to the head of the trigger screw (35). When the sliding tube (13) moves toward the main roller, the driving block (36) drives the trigger block (34) to move toward the inside of the support tube (29), thereby driving the limit block (30) to slide through the sliding hole into the support tube (29).

2. The air cushion furnace strip tension control device according to claim 1, characterized in that: The plane where the axis of the rotating shaft (9) and the central axis of the connecting arm (12) are located is parallel to the joint matching surface of the first pipe segment (10) and the second pipe segment (11).

3. The air cushion furnace strip tension control device according to claim 1, characterized in that: The second adjustment assembly includes a guide column (26) arranged along the radial direction of the main roller, the guide column (26) is slidably inserted into the support frame (25), one end of the guide column (26) is fixed to the inner side surface of the second pipe segment (11), and the other end is provided with a blocking plate (27), a first spring (28) is sleeved on the guide column (26), the first spring (28) is located between the blocking plate (27) and the support frame (25), and the first spring (28) is in a compressed state.

4. The air cushion furnace strip tension control device according to claim 3, characterized in that: The guide column (26) is a polygonal column.

5. The air cushion furnace strip tension control device according to claim 1, characterized in that: The driving assembly includes a conical disk (21) and a push block (22). The conical disk (21) is coaxially arranged at one end of the sliding tube (13) away from the main roller. The push block (22) cooperates with the conical surface of the conical disk (21). A first cylinder (23) is provided on the frame (3). The output end of the first cylinder (23) is connected to the push block (22). A return spring (24) is sleeved on the rotating shaft (9). The return spring (24) is located between the sliding tube (13) and the main roller.

6. The air cushion furnace strip tension control device according to claim 1, characterized in that: There are four support assemblies, which are distributed in a rectangular shape.

7. The air cushion furnace strip tension control device according to claim 1, characterized in that: The guide drive mechanism comprises a linear bearing (6), a guide rail (7) and a second cylinder (8) arranged on the frame (3), the guide rail (7) is vertically fixed on the frame (3), the linear bearing (6) is slidably arranged on the guide rail (7), the bearing seat of the rotating shaft (9) is fixedly connected to the linear bearing (6), the second cylinder (8) is located below the floating roller, and the output end of the second cylinder (8) is connected to the bearing seat of the rotating shaft (9).

8. The air cushion furnace strip tension control device according to claim 1, characterized in that: The frame (3) is also provided with a CCD industrial area array camera for detecting the connection seam of the copper strip (2) and a tension sensor for measuring the tension of the copper strip (2). The CCD industrial area array camera is arranged between the first support roller (4) and the floating roller, and the tension sensor is arranged in front of the tension adjustment mechanism. The CCD industrial area array camera and the tension sensor are both communicatively connected with a controller. The controller generates a control instruction according to the tension signal. The controller generates a control signal according to the image data and based on a preset algorithm. The control signal generated by the controller is used to control the movement of the floating roller and the sliding tube (13).

Images