Steel wire tightening device
By designing the tightening, knotting, limiting and anti-scratch modules of the wire tightening device, the problems of complex tightening operation and poor precision of the wire on the I-spool are solved, and automated and reliable wire fixation is achieved to prevent it from loosening.
Patent Information
- Application Number
- CN202511129660.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2025-10-17
AI Technical Summary
In the prior art, the operation of tightening the steel wire on the spool is complicated and has poor precision. Moreover, the wire cannot adapt to spools of different fullness and is prone to loosening.
A steel wire tightening device was designed, which included a tightening and knotting module, a limit module and an anti-scratch module. The cylinder controlled the extension and rotation of the guide roller to realize the automatic tightening and fixation of the steel wire. Combined with the servo motor and the tightening chuck, the steel wire was stably tightened on the I-spool.
It achieves a higher degree of automation and higher precision in tightening the wire, can adapt to I-spools of different fullness, prevents the wire from loosening, and improves the reliability and efficiency of operation.
Smart Images
Figure CN120790797A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of steel wire full wheel tightening tool, in particular to a steel wire tightening device. BACKGROUND
[0002] Steel wire is a commonly used material in industry, and in the process of production and processing, in order to facilitate transportation and use, it is generally wound and wound by using a spool to form a steel wire winding on the periphery of the spool, and the steel wire is cut off when the spool is full to obtain full spool steel wire.
[0003] After a certain number of steel wire windings on the periphery of the spool, the end of the cut-off steel wire needs to be fixed to avoid the steel wire from coming off during transportation, and in the prior art, manual manual twisting and knotting is generally used, and some factories with high automation degree use a mechanical hand to replace manual operation, but the above operation process is relatively complex and has poor precision, and it is easy to cause inaccurate docking or unable to twist and knot the full spool steel wire with different degrees of fullness; In view of this, a steel wire tightening device is proposed. SUMMARY
[0004] The purpose of the present application is to provide a steel wire tightening device to solve the problems raised in the background art.
[0005] To achieve the above purpose, the present application provides the following technical scheme: a steel wire tightening device, comprising a workbench, a revolution motor is fixedly installed on the lower surface of the workbench, the output end of the revolution motor is fixedly connected with a mounting seat penetrating through the workbench, the top of the mounting seat is detachably connected with a spool, and the surface of the workbench is provided with a tightening and knotting module for tightening the steel wire on the surface of the spool.
[0006] The tightening and knotting module comprises a rotation motor, the rotation motor is fixedly installed on the outer wall of the bottom of the workbench, the output end of the rotation motor is fixedly installed with a small gear penetrating through the inner wall of the workbench, the upper surface of the workbench is rotatably installed with a rotary table, the outer wall of the bottom of the rotary table is fixedly installed with a gear ring, the upper surface of the rotary table is fixedly installed with an air cylinder, the output end of the air cylinder is fixedly installed with a mounting block, the upper surface of the mounting block is rotatably installed with a guide roller, the upper surface of the workbench is fixedly installed with a fixing seat, the upper surface of the fixing seat is fixedly installed with an air cylinder, the output end of the air cylinder is fixedly installed with a mounting frame, the side wall of the mounting frame is fixedly installed with a servo motor, the output end of the servo motor is provided with a tightening chuck, and the upper surface of the workbench is provided with a traction chuck.
[0007] Preferably, a control console is provided on the upper surface of the workbench, and the revolution motor, cylinder, rotation motor, tightening chuck and pulling chuck are all connected to the control console through wires, so that the control console can control the above equipment.
[0008] Preferably, a circular hole larger than the connection between the I-shaped wheel and the mounting seat is opened at the axis center of the turntable to ensure that the turntable can rotate relative to the I-shaped wheel.
[0009] The top end face of the sliding plate is fixedly connected to the inner wall of the sleeve plate, and a short spring is fixedly installed on the top surface of the slide plate, and a circular plate is fixedly installed on the upper surface of the mounting plate, and the bottom end face of the mounting plate is fixedly connected to the inner wall of the sleeve plate. A pull rod is hinged on the upper surface of the circular plate, and the top end of the pull rod is hinged on the sliding block, and the lower surface of the sliding block is hinged on the top surface of the slide. The inner wall of the guide roller is rotatably installed with a rotating rod, and the rotating rod passes through and is fixedly installed with an arc block, and a coil spring is sleeved on the arc outer wall of the end portion of the rotating rod, and an arc protrusion is fixedly installed on the side of the arc block close to the guide roller.
[0010] Preferably, there are three groups of sleeves, which are evenly distributed in a circular array on the periphery of the fixed rod, and fan-shaped blocks are provided on the arc-shaped outer wall of the fixed rod. The fan-shaped blocks are provided in the gap between adjacent sleeves, and the fan-shaped blocks are rotatably connected to the inner wall of the bottom end of the guide roller, thereby ensuring that the fixed rod can drive the guide roller to move synchronously when it is lifted upward.
[0011] Preferably, the slider is arranged in a T shape, and a T-shaped groove adapted to the slider is opened on the top inner wall of the guide roller. When the circular plate moves upward, a driving force is generated on the slider from the center of the guide roller to the outside.
[0012] Preferably, the side wall of the guide roller is provided with a contraction groove with a width matching the width of the arc block. By setting the coil spring, the rotating rod always has a movement tendency to drive the arc block to deflect toward the center of the guide roller.
[0013] Preferably, the outer surface of the guide roller is provided with an anti-scratch module to prevent the surface of the steel wire from being scratched. The anti-scratch module includes a limit sleeve, which is fixedly installed on the bottom inner surface of the guide roller. The upper surface of the circular plate is hinged with a connecting rod, and the top end of the connecting rod is hinged with an arc panel. A reset spring is fixedly installed on the outer wall of the arc panel close to the guide roller.
[0014] Preferably, the top of the guide roller is provided in a cylindrical shape, so as to have a vertical outer surface, the inside of the limiting sleeve is provided in a hollow shape, and the inside cavity diameter of the limiting sleeve is larger than the outer diameter of the circular plate, so as to avoid affecting the jacking action of the fixing rod on the circular plate.
[0015] Preferably, the top corners of the arc surface plate are provided in a rounded arc surface, so as to avoid causing excessive wear on the surface of the steel wire and affecting the actual use effect of the steel wire.
[0016] Compared with the prior art, the steel wire tightening device has the following beneficial effects:
[0017] 1. The steel wire tightening device is provided with a tightening and knotting assembly, a guide roller is extended to the side of the steel wire by separately controlling a cylinder, and the steel wire is driven to rotate around the spool for one turn, so that a steel wire overlapping and tightening part is formed at the cutting end of the spool, and the overlapping and tightening part is clamped and rotated by controlling the tightening chuck to be twisted into a spiral shape, so that the end of the steel wire on the spool is tightened to prevent it from being scattered, the degree of automation is higher, the reliability and precision are higher, and the traction of the guide roller meets the tightening requirements of the end of the spool with different steel wire fullness.
[0018] 2. The steel wire tightening device is provided with a limiting module, a cylinder, a sleeve plate, a sliding plate, a mounting plate, a long spring and a short spring, and the limiting of the multi-section telescopic structure makes the fixing rod upwardly jacks up the circular plate to drive the pull rod, the sliding block and the jacking rod to push out the arc block, so as to form a vertical blocking structure on the outer surface of the guide roller, and due to the arc outer surface of the arc block, the guide roller moving from bottom to top will not pull the steel wire, and the steel wire will finally enter the gap between the arc block and the guide roller along the outer surface of the guide roller, and then the continuous rotation of the rotating table ensures that the steel wire will not be separated from the guide roller in the vertical direction, so as to avoid the scattering of the steel wire affecting the normal development of the subsequent tightening operation.
[0019] 3. The steel wire tightening device is provided with a scratch prevention module, after the guide roller pulls the steel wire to the specified position, the guide roller moves downward under the control of the cylinder, and due to the elastic force of the return spring, the arc surface plate first shrinks into the guide roller, cooperates with the cylindrical outer surface of the top of the guide roller, so that the steel wire will not be interfered and blocked in the process of moving upward relative to the guide roller, and will not be pulled by the outside, so as to ensure the timely and stable resetting of the steel wire, and further ensure the rotating and tightening effect of the tightening chuck. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.
[0021] Figure 2Structure diagram of fixed seat, servo motor, air cylinder and tightening chuck of the application;
[0022] Figure 3 Structure diagram of tightening knot module of the application;
[0023] Figure 4 Structure diagram of revolution motor, mounting seat and spool of the application;
[0024] Figure 5 Structure diagram of guide roller of embodiment two of the application;
[0025] Figure 6 Structure diagram of guide roller of embodiment two of the application;
[0026] Figure 7 Structure diagram of limiting module of embodiment two of the application;
[0027] Figure 8 Structure diagram of arc-shaped block of embodiment two of the application;
[0028] Figure 9 Structure diagram of guide roller of embodiment three of the application;
[0029] Figure 10 Structure diagram of scratch-preventing module of embodiment three of the application;
[0030] Figure 11 Structure diagram of limiting sleeve, connecting rod and arc panel of embodiment three of the application.
[0031] In the figure: 1, workbench; 2, revolution motor; 3, mounting seat; 4, spool; 5, tightening knot module; 51, revolution motor; 52, pinion; 53, rotary table; 54, gear ring; 55, air cylinder; 56, mounting block; 57, guide roller; 58, fixed seat; 59, air cylinder; 510, mounting frame; 511, servo motor; 512, tightening chuck; 513, traction chuck; 6, limiting module; 61, fixed rod; 62, sleeve plate; 63, sliding plate; 64, long spring; 65, mounting plate; 66, short spring; 67, round plate; 68, pull rod; 69, sliding block; 610, jacking rod; 611, rotating rod; 612, arc-shaped block; 613, coil spring; 614, arc-shaped protrusion; 7, scratch-preventing module; 71, limiting sleeve; 72, connecting rod; 73, arc panel; 74, return spring. DETAILED DESCRIPTION
[0032] Embodiment one
[0033] As Figures 1-4As shown, the present application provides a technical scheme: a steel wire tightening device, including a workbench 1, the lower surface of the workbench 1 is fixedly installed with a revolution motor 2, the output end of the revolution motor 2 is fixedly connected with a mounting seat 3 through the workbench 1, the top of the mounting seat 3 is detachably connected with a spool 4, the surface of the workbench 1 is provided with a tightening knot module 5 for tightening the surface steel wire of the spool 4, the tightening knot module 5 includes a rotation motor 51, a pinion 52, a rotary table 53, a gear ring 54, a cylinder 55, a mounting block 56, a guide roller 57, a fixed seat 58, a cylinder 59, a mounting frame 510, a servo motor 511 and a tightening chuck 512 and a traction chuck 513.
[0034] In an embodiment of the present application, the rotation motor 51 is fixedly installed on the bottom outer wall of the workbench 1, the output end of the rotation motor 51 is fixedly installed with the pinion 52 through the inner wall of the workbench 1, the upper surface of the workbench 1 is rotatably installed with the rotary table 53, the bottom outer wall of the rotary table 53 is fixedly installed with the gear ring 54, the upper surface of the rotary table 53 is fixedly installed with the cylinder 55, the output end of the cylinder 55 is fixedly installed with the mounting block 56, the upper surface of the mounting block 56 is rotatably installed with the guide roller 57, the upper surface of the workbench 1 is fixedly installed with the fixed seat 58, the upper surface of the fixed seat 58 is fixedly installed with the cylinder 59, the output end of the cylinder 59 is fixedly installed with the mounting frame 510, the side wall of the mounting frame 510 is fixedly installed with the servo motor 511, the output end of the servo motor 511 is provided with the tightening chuck 512, and the upper surface of the workbench 1 is provided with the traction chuck 513.
[0035] Further, the upper surface of the workbench 1 is provided with a control console, the revolution motor 2, the cylinder 55, the rotation motor 51, the tightening chuck 512 and the traction chuck 513 are connected with the control console through wires, so that the control console can control the above-mentioned devices to achieve the tightening effect of the steel wire, and at the same time, the gear ring 54 is engaged with the pinion 52 and realizes transmission, in actual use, first, the revolution motor 2 is started to drive the spool 4 to rotate above the workbench 1 to perform winding work on the steel wire, and after winding is completed, the revolution motor 2 is controlled to stop working, at this time, the spool 4 gradually stops moving until finally keeps still, in addition, the rotary table 53 and the spool 4 keep relative rotation, that is, a circular hole larger than the connecting part between the spool 4 and the mounting seat 3 is formed in the axis of the rotary table 53, to ensure that the rotary table 53 can relatively rotate with the spool 4.
[0036] Meanwhile, the mounting frame 510 is slidingly installed on the upper surface of the fixed seat 58, so that under the driving of the air cylinder 59, the mounting frame 510 can slide along the upper surface of the fixed seat 58 towards the side of the spool 4, thereby causing the tightening chuck 512 to approach the spool 4, and further, the tightening chuck 512 and the traction chuck 513 are both electrically controlled chuck structures, which are controlled by the control console to enable the tightening chuck 512 and the traction chuck 513 to fix the steel wire when clamped.
[0037] In actual use, first, one end of the steel wire is fixed on the arc-shaped outer surface of the spool 4, at which time the revolution motor 2 is started to drive the mounting seat 3 and the spool 4 to continuously rotate on the workbench 1 to perform winding work on the processed steel wire, when the winding of the steel wire on the spool 4 is completed, the steel wire is cut off, and the cut end of the steel wire is placed in the traction chuck 513, at which time the traction chuck 513 is controlled to clamp the cut end of the steel wire, and the air cylinder 55 is controlled to start and lift the fixed seat 58 and the guide roller 57 upwards until the guide roller 57 is flush with the steel wire, at which time the revolution motor 51 is controlled to start, and the gear ring 54 is driven to rotate by the pinion 52, in this process, the guide roller 57 is driven to rotate by the air cylinder 55 when the turntable 53 rotates to pull the steel wire, since one end of the steel wire is clamped by the traction chuck 513, the guide roller 57 pulls the steel wire and rotates around the spool 4 for one revolution, and forms two overlapping and tight sections of the steel wire on the side of the guide roller 57, at which time the air cylinder 59 is controlled to start, and the mounting frame 510 is pushed towards the side of the spool 4, then the tightening chuck 512 is controlled to tighten to clamp the overlapping and tight section of the steel wire, after that, the air cylinder 55 is controlled to retract so that the guide roller 57 is separated from the steel wire, and the traction chuck 513 is controlled to release the steel wire, at which time the servo motor 511 is controlled to start, and the overlapping section of the steel wire is continuously rotated by the tightening chuck 512 to twist it into a spiral shape, which tightens the end of the steel wire on the spool 4 to prevent it from coming off, this way has higher automation, reliability and precision, and since the guide roller 57 is used for traction, it can meet the tightening requirements of the end of the spool 4 with different fullness of the steel wire.
[0038] Example two
[0039] Please refer to Figures 5-8On the basis of the first embodiment of the present application, the top of the air cylinder 55 is provided with a limiting module 6 to ensure that the steel wire does not slip during the traction process, the limiting module 6 comprises a fixed rod 61 fixedly installed at the top of the output end of the air cylinder 55, the upper surface of the air cylinder 55 is fixedly installed with a cover plate 62, the inner wall of the top of the cover plate 62 is slidably installed with a sliding plate 63, the bottom end surface of the sliding plate 63 is fixedly connected with a long spring 64 between the inner wall of the cover plate 62, the top end inner wall of the sliding plate 63 is slidably installed with a mounting plate 65, the bottom end surface of the mounting plate 65 is fixedly installed with a short spring 66 between the inner wall of the cover plate 62, the upper surface of the mounting plate 65 is fixedly installed with a circular plate 67, the circular plate 67 is hingedly connected with a pull rod 68 at the top, the top end of the pull rod 68 is hingedly connected with a sliding block 69, the lower surface of the sliding block 69 is hingedly connected with a top rod 610, the inner wall of the guide roller 57 is rotatably installed with a rotating rod 611, the rotating rod 611 penetrates and is fixedly installed with an arc block 612, the arc-shaped outer wall of the end of the rotating rod 611 is sleeved with a coil spring 613, and the arc block 612 is fixedly installed with an arc convex block 614 close to the side of the guide roller 57.
[0040] Specifically, the number of cover plates 62 is three, and the three cover plates 62 are evenly distributed in a circumferential array around the fixed rod 61, and the arc-shaped outer wall of the fixed rod 61 is provided with a sector block, the sector block is arranged at the gap between adjacent cover plates 62, and the sector block is rotatably connected with the bottom end inner wall of the guide roller 57, so as to ensure that the fixed rod 61 can drive the guide roller 57 to move synchronously when being lifted upward, in addition, the cover plate 62, the sliding plate 63 and the mounting plate 65 and the long spring 64, the short spring 66 form a multi-section telescopic structure, so that after the fixed rod 61 is lifted upward by a distance, due to the length limitation of the multi-section telescopic structure, the continuous lifting of the fixed rod 61 will promote the circular plate 67 to slide upward in the inside of the guide roller 57, further, the sliding block 69 is arranged in a T shape, and the top inner wall of the guide roller 57 is provided with a T-shaped sliding groove matched with the sliding block 69, and during the upward movement of the circular plate 67, the sliding block 69 is pushed from the center of the guide roller 57 to the outside.
[0041] At the same time, the end of the top rod 610 away from the sliding block 69 is hingedly connected with the side wall of the arc block 612, and at the same time, the side wall of the guide roller 57 is provided with a contraction groove with a width matched with the width of the arc block 612, through the arrangement of the coil spring 613, the rotating rod 611 always has a movement tendency to drive the arc block 612 to deflect towards the center of the guide roller 57, and the arc convex block 614 is arranged on the side of the arc block 612 close to the guide roller 57, so as to guide the steel wire on the side of the guide roller 57.
[0042] In this embodiment, when the cylinder 55 is started, the fixed rod 61 is controlled to move upward to lift the guide roller 57 to a position parallel to the steel wire. During the lifting process, the multi-section telescopic structure composed of the cover plate 62, the sliding plate 63, the mounting plate 65, the long spring 64 and the short spring 66 will generate a downward pulling force on the round plate 67, so that the fixed rod 61 will lift the round plate 67 upward, prompting the pull rod 68 to generate an outward pushing force on the sliding block 69, so that the top rod 610 pushes the arc block 612 away from the guide roller 57, and the arc block 612 is deflected outward around the rotating rod 611 as the center, generating a vertical blocking structure on the outer surface of the guide roller 57. Due to the arc-shaped outer surface of the arc block 612, the guide roller 57 moving upward will not pull the steel wire, and the steel wire will also enter the gap between the arc block 612 and the guide roller 57 along the outer surface. After that, with the continuous rotation of the rotating table 53, the steel wire is guaranteed not to be separated from the guide roller 57 in the vertical direction, avoiding the influence of the scattered steel wire on the normal development of the subsequent tightening operation.
[0043] After the steel wire is guided to rotate one circle by the guide roller 57, the cylinder 55 is started and the fixed rod 61 is controlled to contract. At this time, under the elastic force of the coil spring 613, the long spring 64 and the short spring 66, the arc block 612 will swing towards the center of the guide roller 57 around the rotating rod 611 as the center. At this time, under the extrusion and pushing of the arc-shaped protrusion 614, the steel wire between the arc block 612 and the outer surface of the guide roller 57 is extruded to separate from the guide roller 57, avoiding unnecessary pulling of the steel wire during adjustment and affecting the effect of the steel wire tightening and knotting operation.
[0044] Embodiment three
[0045] Please refer to Figures 9-11 On the basis of embodiment two, the outer surface of the guide roller 57 is provided with a scratch prevention module 7 to prevent scratching of the surface of the steel wire. The scratch prevention module 7 includes a limiting sleeve 71 fixedly installed on the inner surface of the bottom of the guide roller 57. The upper surface of the round plate 67 is hinged with a connecting rod 72, and the top end of the connecting rod 72 is hinged with an arc plate 73. The arc plate 73 is fixedly installed with a return spring 74 near the outer wall of the side close to the guide roller 57.
[0046] In addition, the top of the guide roller 57 is provided in a cylindrical shape, so that it has a vertical outer surface, and then the inner part of the limiting sleeve 71 is provided in a hollow shape, and the inner cavity diameter of the limiting sleeve 71 is greater than the outer diameter of the circular plate 67, so as to avoid affecting the jacking action of the fixing rod 61 on the circular plate 67, and at the same time, the number of connecting rods 72 and arc plates 73 is provided in multiple groups, and the multiple groups of connecting rods 72 and arc plates 73 are arranged in a circumferential array outside the circular plate 67, and the arc-shaped outer wall of the guide roller 57 is provided with an adaptive groove with the same width as the arc plate 73, and specifically, the top corners of the arc plate 73 are provided in a rounded arc shape, so as to avoid causing too much wear on the surface of the steel wire and affecting the actual use effect of the steel wire, and further, the two ends of the return spring 74 are fixedly connected with the arc plate 73 and the outer wall of the limiting sleeve 71, respectively, and under the influence of the elastic force of the return spring 74, the arc plate 73 always has a movement trend of shrinking into the inner part of the guide roller 57.
[0047] In this embodiment, when in use, the cylinder 55 controls the upward jacking process of the fixing rod 61, and through the jacking of the circular plate 67 by the top end of the fixing rod 61, the connecting rod 72 is matched to make the arc plate 73 extend outward, so as to form a ring of blocking structure on the outer surface of the guide roller 57, and the downward movement of the guide roller 57 can avoid causing large wear on the steel wire due to the rounded setting of the outer surface of the arc plate 73, and finally the steel wire is in contact with the bottom end of the arc plate 73 and the guide roller 57, so as to complete the guiding and tightening work of the steel wire;
[0048] And after the guide roller 57 pulls the steel wire to the designated position, the guide roller 57 will move downward under the control of the cylinder 55, and due to the elastic force of the return spring 74, the arc plate 73 will first shrink into the inner part of the guide roller 57, and the cylindrical outer surface of the top of the guide roller 57 is matched, so that the steel wire will not be interfered and blocked during the upward movement relative to the guide roller 57, and at the same time, it will not be pulled by the outside, so as to ensure the timely and stable resetting of the steel wire, and further ensure the rotating and tightening effect of the tightening chuck 512.
[0049] The above describes the application in detail, but some modifications or improvements can be made on the basis of the application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the application are within the protection scope of the application.
Claims
1. A wire tightening device, comprising a workbench (1), characterized in that: A revolving motor (2) is fixedly mounted on the lower surface of the workbench (1); an output end of the revolving motor (2) passes through the workbench (1) and is fixedly connected to a mounting seat (3); a top of the mounting seat (3) is detachably connected to a spool (4); and a tightening and knotting module (5) for tightening a steel wire on the surface of the spool (4) is provided on the surface of the workbench (1); The tightening and knotting module (5) includes a self-rotating motor (51), which is fixedly mounted on the bottom outer wall of the workbench (1). The output end of the self-rotating motor (51) passes through the inner wall of the workbench (1) and is fixedly mounted with a small gear (52). A turntable (53) is rotatably mounted on the upper surface of the workbench (1), a gear ring (54) is fixedly mounted on the bottom outer wall of the turntable (53), a cylinder (55) is fixedly mounted on the upper surface of the turntable (53), and a mounting block ( 56), a guide roller (57) is rotatably mounted on the upper surface of the mounting block (56), a fixing seat (58) is fixedly mounted on the upper surface of the workbench (1), a cylinder (59) is fixedly mounted on the upper surface of the fixing seat (58), a mounting frame (510) is fixedly mounted on the output end of the cylinder (59), a servo motor (511) is fixedly mounted on the side wall of the mounting frame (510), a tightening chuck (512) is provided at the output end of the servo motor (511), and a traction chuck (513) is provided on the upper surface of the workbench (1).
2. A wire tightening device according to claim 1, characterized in that: A control console is provided on the upper surface of the workbench (1); the revolution motor (2), the cylinder (55), the rotation motor (51), the tightening chuck (512) and the pulling chuck (513) are all connected to the control console via wires.
3. A wire tightening device according to claim 1, characterized in that: A circular hole larger than the connection between the spool (4) and the mounting seat (3) is provided at the axis center of the turntable (53).
4. A steel wire tightening device according to claim 1, characterized in that: The top of the cylinder (55) is provided with a limit module (6) to ensure that the wire will not slip during the pulling process. The limit module (6) includes a fixed rod (61). The fixed rod (61) is fixedly installed on the top of the output end of the cylinder (55). A sleeve (62) is fixedly installed on the upper surface of the cylinder (55). A slide plate (63) is slidably installed on the top inner wall of the sleeve plate (62). A long spring (64) is fixedly connected between the bottom end surface of the slide plate (63) and the inner wall of the sleeve plate (62). A mounting plate (65) is slidably installed on the top inner wall of the slide plate (63). A short spring (66) is fixedly installed, a circular plate (67) is fixedly installed on the upper surface of the mounting plate (65), a pull rod (68) is hinged on the upper surface of the circular plate (67), a slider (69) is hinged on the top end of the pull rod (68), a top rod (610) is hinged on the lower surface of the slider (69), a rotating rod (611) is rotatably installed on the inner wall of the guide roller (57), an arc block (612) is passed through and fixedly installed on the rotating rod (611), a coil spring (613) is sleeved on the arc-shaped outer wall of the end of the rotating rod (611), and an arc-shaped protrusion (614) is fixedly installed on the side of the arc block (612) close to the guide roller (57).
5. A steel wire tightening device according to claim 4, characterized in that: The number of the sleeve plates (62) is three, and the three sleeve plates (62) are evenly distributed in a circular array on the periphery of the fixed rod (61). Sector blocks are provided on the arc-shaped outer wall of the fixed rod (61), and the sector blocks are provided in the gaps between adjacent sleeve plates (62). The sector blocks are rotatably connected to the inner wall of the bottom end of the guide roller (57).
6. A steel wire tightening device according to claim 4, characterized in that: The slider (69) is arranged in a T-shape, and a T-shaped sliding groove adapted to the slider (69) is provided on the top inner wall of the guide roller (57).
7. A steel wire tightening device according to claim 4, characterized in that: The side wall of the guide roller (57) is provided with a contraction groove having a width matching the width of the arc block (612).
8. The steel wire tightening device according to claim 4, characterized in that: The outer surface of the guide roller (57) is provided with an anti-scratch module (7) for preventing the surface of the steel wire from being scratched. The anti-scratch module (7) includes a limiting sleeve (71). The limiting sleeve (71) is fixedly mounted on the inner surface of the bottom of the guide roller (57). The upper surface of the circular plate (67) is hinged with a connecting rod (72). The top end of the connecting rod (72) is hinged with an arc panel (73). A return spring (74) is fixedly mounted on the outer wall of the arc panel (73) close to the guide roller (57).
9. A steel wire tightening device according to claim 8, characterized in that: The top of the guide roller (57) is configured to be cylindrical so as to have a vertical outer surface. The interior of the limiting sleeve (71) is configured to be hollow, and the diameter of the internal cavity of the limiting sleeve (71) is larger than the outer diameter of the circular plate (67).
10. The steel wire tightening device according to claim 8, characterized in that: The top corners of the arc panel (73) are all arranged in the form of rounded arc surfaces.