A stranding device for wire and cable production

Abstract

This invention relates to the field of conductor stranding equipment technology, and discloses a stranding device for wire and cable production. The invention includes: a machine platform; a wire guide fixed on the machine platform and bolted into a pre-drilled mounting hole on the machine platform, including a bracket and two guide wheels rotatably mounted on the bracket, through which the stranded wire is pulled in a designated direction; a turntable rotatably mounted on the machine platform and driven by a drive unit; and a main stranding die fixed on the machine platform and bolted into a pre-drilled mounting hole, having a stranding hole through which the conductor is stranded. This invention adjusts the distance between the permanent magnet and the Hall sensor, thereby feedback-controlled damping of the magnetic powder resistive device for rapid adjustment, ensuring the conductor tension remains within a reasonable range, effectively reducing wire breakage and improving stranding quality.

Description

Technical Field

[0001] This invention relates to the field of conductor stranding equipment technology, specifically to a stranding equipment for wire and cable production. Background Technology

[0002] Conductor stranding is a core process in the processing of wires, cables, communication wires, and alloy conductors. It involves spirally winding and tightly twisting multiple single wires together according to a set pitch and stranding direction to form a composite stranded conductor. This improves the overall flexibility, bending strength, structural roundness, and conductivity stability of the conductor, and avoids the defects of single wires being prone to breakage and deformation. It is widely used in the production of cables, wire harnesses, and special conductors.

[0003] During the stranding process, each individual wire is continuously supplied by the unwinding reel, and the unwinding tension is the core control parameter of the stranding process. If the unwinding tension fluctuates, becoming too large or too small, excessive tension will cause the individual wires to stretch and become thinner, the conductor cross-sectional area to deviate, and the wire to be damaged and broken, increasing the scrap rate. Insufficient tension will lead to loose individual wires, misalignment, loose stranding, uneven pitch, poor roundness of the finished cable, and a non-compact structure. When the tension of each unwinding reel is inconsistent, problems such as individual wire twisting, arching, and strand eccentricity will occur, seriously affecting the mechanical properties and electrical transmission stability of the finished product.

[0004] Therefore, maintaining a constant, uniform, and controllable tension during unwinding and rewinding is a key prerequisite for ensuring the quality of stranded wire forming, standardizing product specifications, reducing production losses, and improving the qualification rate of finished cables. Summary of the Invention

[0005] The purpose of this invention is to provide a stranding device for producing wires and cables, so as to solve the problems mentioned in the background art.

[0006] A wire stranding device for producing wires and cables, comprising:

[0007] Equipment platform,

[0008] The cable guide is fixed on the equipment platform and is installed in the reserved mounting hole on the equipment platform by bolts. It includes a bracket and two guide wheels that are rotatably set on the bracket. The stranded wire passes through the guide wheels on the cable guide and is pulled in a specified direction.

[0009] The turntable is rotatably mounted on the equipment platform and driven by a drive unit;

[0010] The main stranding die is fixed on the equipment platform and is installed in the reserved mounting hole on the equipment platform by bolts. It has a stranding hole through which the wire is stranded.

[0011] A constant tension wire feeder includes a frame that is bolted to a turntable, and a spool shaft that is rotatably mounted on the frame. The spool is detachably mounted on the spool shaft and is coaxial with the spool shaft.

[0012] A magnetic powder resistance device is mounted on the frame, and the output shaft of the magnetic powder resistance device is coaxially connected to the bobbin shaft.

[0013] The feedback regulator is connected to the current controller via an electrical signal line. The magnetic powder resistance is also connected to the current controller via an electrical signal line. When the spool is unwinding, the feedback regulator dynamically follows up in real time. The following signal is transmitted to the current controller, which then controls the magnetic powder resistance to adjust its damping force. The current controller includes a current adjustment unit for the magnetic powder resistance and a control unit that receives and controls the signal from the feedback regulator.

[0014] Preferably, the feedback regulator includes an insulating box, which is fixed on the frame. A Hall sensor is fixedly provided at one end of the insulating box near the turntable. A slider is slidably provided inside the insulating box, and a tension lead wheel is rotatably provided on the slider. The tension lead wheel extends out of the insulating box. After the wire is unwound from the spool, it passes around the tension lead wheel and enters the main stranding die for stranding.

[0015] Preferably, the insulating box is fixedly provided with two traction sliders located on the front and rear sides of the slider respectively, and a spring is provided between the traction slider and the slider. The spring uses elastic potential energy to hold the slider in the position between the two traction sliders.

[0016] Preferably, the traction slider is fixedly provided with a locking screw extending out of the insulation box, and a wing nut is threadedly connected to the locking screw. After tightening the wing nut, the traction slider can be locked at a designated position in the insulation box.

[0017] Preferably, the end of the spool shaft has threads. After the spool is fitted onto the spool shaft, a threaded locking device is threadedly connected to the spool shaft to press and fix the spool onto the spool shaft. The spool and the spool shaft are coaxial.

[0018] Preferably, the turntable is fixed to the end of the hollow spindle, the hollow spindle is rotatably mounted on the equipment platform via bearings, a driven synchronous pulley is fixedly connected to one end of the hollow spindle via a key, a conductive slip ring is embedded in the tail end of the hollow spindle, and the power supply wire passes through the hollow spindle and is electrically connected to the magnetic powder resistance device, the Hall sensor and the current controller.

[0019] Preferably, the power supply wires are fixed to the wall of the turntable and the frame by adhesive.

[0020] Preferably, the drive unit includes an external mounting housing and an internal geared motor. The output shaft of the geared motor is coaxially fixed with a driving synchronous pulley, and the driving synchronous pulley and the driven synchronous pulley are connected by a synchronous belt.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: Due to the dynamic changes in traction force and damping, and the decrease in wire diameter and increase in tension caused by wire unwinding, the tension guide wheel is pulled forward by the wire, the distance between the permanent magnet and the Hall sensor increases, the signal of the Hall sensor weakens, and consequently the current controller reduces the damping force of the magnetic powder resistive device. When the damping force of the magnetic powder resistive device decreases, the torque of the spool shaft decreases, the corresponding tension of the wire decreases, and the tension guide wheel tends to return to its initial position. Conversely, when the tension of the wire decreases, the tension guide wheel moves backward. As the permanent magnet moves, the distance between it and the Hall sensor decreases, the Hall sensor signal strengthens, and the damping force of the magnetic powder resistance device controlled by the current controller increases. This, in turn, increases the torque of the spool shaft, leading to increased tension in the conductor. During the unwinding process of the spool, the tension guide wheel rapidly adjusts with the conductor tension. Simultaneously, the distance between the permanent magnet and the Hall sensor adjusts, which in turn feeds back to control the damping of the magnetic powder resistance device, rapidly adjusting the conductor tension to maintain it within a reasonable range. This effectively reduces wire breakage and improves the quality of the stranded wire. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0024] Figure 3 This is a structural schematic diagram of the present invention from another angle;

[0025] Figure 4 This is an enlarged structural schematic diagram of the constant tension wire feeder 18 of the present invention.

[0026] The markings in the attached diagram are described as follows: 10. Equipment platform; 11. Cable feeder; 12. Main stranding die; 13. Conductive slip ring; 14. Drive unit; 15. Hollow main shaft; 16. Driven synchronous pulley; 17. Turntable; 18. Constant tension cable feeder; 19. Frame; 20. Tension guide wheel; 21. Wire drum shaft; 22. Magnetic powder resistance device; 23. Threaded locking device; 24. Hall sensor; 25. Permanent magnet; 26. Slider; 27. Traction slider; 28. Wing nut; 29. ​​Locking screw; 30. Wire drum; 31. Feedback regulator; 32. Insulation box. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-4 This invention provides a stranding device for producing electric wires and cables, comprising:

[0029] Equipment platform 10 serves as the mounting and support platform for the equipment;

[0030] The cable guide 11 is fixed on the equipment platform 10 and is bolted to a reserved mounting hole on the equipment platform 10. It includes a bracket and two guide wheels rotatably mounted on the bracket. The stranded wire passes through the guide wheels on the cable guide 11 and is pulled in a specified direction.

[0031] Turntable 17 is rotatably mounted on the equipment platform 10 and is driven by drive unit 14;

[0032] The main stranding die 12 is fixed on the equipment platform 10 and is installed in the reserved mounting hole on the equipment platform 10 by bolts. It has a stranding hole through which the wire is stranded and passes.

[0033] The constant tension wire unwinder 18 includes a frame 19, which is bolted to a turntable 17, and a spool shaft 21 rotatably mounted on the frame 19. A spool 30 is detachably mounted on the spool shaft 21 and coaxial with the spool shaft 21. Under the action of the spool shaft 21, the spool 30 can rotate on the frame 19 for unwinding.

[0034] A magnetic powder resistance device 22 is mounted on the frame 19. The output shaft of the magnetic powder resistance device 22 is coaxially connected to the bobbin shaft 21. The magnetic powder resistance device 22 generates continuously adjustable damping by controlling the current and utilizing the state change of the magnetic powder in the magnetic field. When the bobbin 30 experiences tension changes during the high-speed dynamic process of unwinding, the damping force of the magnetic powder resistance device 22 is dynamically adjusted to control the torque of the bobbin 30 within a stable range, thereby maintaining the tension of the conductor during unwinding. This helps to improve the flatness of the conductor after stranding and reduces the risk of breakage for thinner conductors.

[0035] Feedback regulator 31 is connected to current controller via an electrical signal line. Magnetic powder resistive device 22 is also connected to the current controller via an electrical signal line. When the bobbin 30 is unwinding, the feedback regulator 31 dynamically follows the signal in real time. The following signal is transmitted to the current controller, which then controls the magnetic powder resistive device 22 to adjust its damping force. The current controller includes a current adjustment unit for the magnetic powder resistive device 22 and a control unit that receives and controls the signal from the feedback regulator 31.

[0036] Preferably, the feedback regulator 31 includes an insulating box 32, which is fixed on the frame 19. A Hall sensor 24 is fixedly mounted on one end of the insulating box 32 near the turntable 17. A slider 26 is slidably mounted inside the insulating box 32, and a tension lead wheel 20 is rotatably mounted on the slider 26. The tension lead wheel 20 extends partially outside the insulating box 32. After the wire is unwound from the spool 30, it passes around the tension lead wheel 20 and enters the main winding die 12 for winding. The wire provides a forward traction force to the tension lead wheel 20. A permanent magnet 25 is also fixedly mounted on the slider 26. When the tension of the wire changes, it will drag the tension lead wheel 20 to move, thereby adjusting the position of the slider 26 and the permanent magnet 25. When the distance between the permanent magnet 25 and the Hall sensor 24 changes, the signal of the Hall sensor 24 will change, thereby adjusting the magnetic powder resistance device 22 through the current controller.

[0037] Preferably, the insulating box 32 is fixedly provided with two traction sliders 27 located on the front and rear sides of the slider 26, respectively. A spring is provided between the traction sliders 27 and the slider 26. The spring uses elastic potential energy to hold the slider 26 between the two traction sliders 27. In this position, the tension of the wire is the static tension set value. When the winding begins, due to the dynamic adjustment of the traction force and damping, and the wire unwinding causing the wire spool diameter to decrease, the tension increases. The tension guide wheel 20 is pulled forward by the wire, the distance between the permanent magnet 25 and the Hall sensor 24 increases, the signal of the Hall sensor 24 weakens, and the current controller correspondingly reduces the damping force of the magnetic powder resistance device 22. When the damping force of the magnetic powder resistance device 22 decreases, the torque of the spool shaft 21 decreases, and the tension of the wire decreases. When the tension decreases, the tension guide wheel 20 tends to return to its initial position. Conversely, when the tension of the conductor decreases, the tension guide wheel 20 moves backward, the distance between the permanent magnet 25 and the Hall sensor 24 decreases, the signal of the Hall sensor 24 becomes stronger, which in turn causes the current controller to control the damping force of the magnetic powder resistance device 22 to increase, and the torque of the spool shaft 21 to increase, resulting in a greater tension of the conductor. During the unwinding process of the spool 30, the tension guide wheel 20 moves rapidly with the adjustment of the conductor tension. Simultaneously, the distance between the permanent magnet 25 and the Hall sensor 24 is adjusted, which in turn feeds back to control the damping of the magnetic powder resistance device 22 to adjust rapidly, so that the tension of the conductor is always kept within a reasonable range, effectively reducing wire breakage and improving the quality of stranded wire.

[0038] Preferably, a locking screw 29 extending out of the insulating box 32 is fixedly provided on the traction slider 27. A wing nut 28 is threadedly connected to the locking screw 29. After tightening the wing nut 28, the traction slider 27 can be locked in a designated position on the insulating box 32. By adjusting the initial positions of the two traction sliders 27 and the slider 26, the elastic force of the tension spring corresponding to the traction slider 27 and the slider 26, as well as the initial position of the slider 26, can be adjusted, thereby achieving different static tension values. Furthermore, since the elastic force of the tension spring is adjusted differently, the increase and decrease of the tension of the tension lead wheel 20 can be adjusted in different proportions, thereby achieving the adjustment of different needs for tension magnitude sensitivity.

[0039] Preferably, the end of the spool shaft 21 has threads. After the spool 30 is fitted onto the spool shaft 21, the threaded locking device 23 is threadedly connected to the spool shaft 21 to press and fix the spool 30 onto the spool shaft 21. The spool 30 and the spool shaft 21 are coaxial.

[0040] Preferably, the turntable 17 is fixed to the end of the hollow spindle 15, which is rotatably mounted on the equipment platform 10 via bearings. A driven synchronous wheel 16 is fixedly connected to one end of the hollow spindle 15 via a key. A conductive slip ring 13 is embedded in the tail end of the hollow spindle 15. The power supply wire passes through the hollow spindle 15 and is electrically connected to the magnetic powder resistive device 22, the Hall sensor 24, and the current controller. The power supply wire is fixed to the wall of the turntable 17 and the frame 19 by adhesive, thereby ensuring good stability during the rotation of the turntable 17.

[0041] Preferably, the drive unit 14 includes an external mounting housing and an internal geared motor. The output shaft of the geared motor is coaxially fixed with an active synchronous pulley, and the active synchronous pulley and the driven synchronous pulley 16 are connected by a synchronous belt. The drive unit 14 drives the hollow main shaft 15 to rotate the turntable 17 to realize the synchronous feeding and twisting of multiple sets of constant tension wire feeders 18.

[0042] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined herein, and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A stranding device for producing wires and cables, characterized in that, include: Equipment platform (10), cable tray (11), fixed on the equipment platform (10); A turntable (17) is rotatably mounted on the equipment platform (10) and driven by a drive unit (14); The main stranding die (12) is fixed on the equipment platform (10) and is fixedly installed in the reserved mounting hole on the equipment platform (10) by bolts. It has a stranding hole, and the wire is stranded through the stranding hole on the main stranding die (12). The constant tension wire feeder (18) includes a frame (19) which is bolted to a turntable (17) and a spool shaft (21) rotatably mounted on the frame (19). The spool (30) is detachably mounted on the spool shaft (21) and coaxial with the spool shaft (21). A magnetic powder resistive device (22) is mounted on the frame (19), and the output shaft of the magnetic powder resistive device (22) is coaxially connected to the bobbin shaft (21). The feedback regulator (31) is connected to the current controller via an electrical signal line. The magnetic powder resistive device (22) is connected to the current controller via an electrical signal line. The current controller controls the magnetic powder resistive device (22) to adjust the damping force. The current controller includes a current adjustment unit for the magnetic powder resistive device (22) and a control unit that receives and controls the signal from the feedback regulator (31).

2. The stranding equipment for producing wires and cables according to claim 1, characterized in that: The feedback regulator (31) includes an insulating box (32) which is fixed on the frame (19). A Hall sensor (24) is fixedly provided at one end of the insulating box (32) near the turntable (17). A slider (26) is slidably provided inside the insulating box (32), and a tension lead wheel (20) is rotatably provided on the slider (26). The tension lead wheel (20) extends out of the insulating box (32). After the wire is unwound from the spool (30), it passes around the tension lead wheel (20) and enters the main stranding die (12) for stranding.

3. The stranding equipment for producing wires and cables according to claim 2, characterized in that: The insulating box (32) is fixedly provided with two traction sliders (27) located on the front and rear sides of the slider (26) respectively. A spring is provided between the traction slider (27) and the slider (26). The spring uses elastic potential energy to hold the slider (26) between the two traction sliders (27).

4. The stranding equipment for producing wires and cables according to claim 3, characterized in that: The traction slider (27) is fixedly provided with a locking screw (29) extending out of the insulating box (32). The wing nut (28) is threadedly connected to the locking screw (29). After tightening the wing nut (28), the traction slider (27) can be locked at a designated position in the insulating box (32).

5. The stranding equipment for producing wires and cables according to claim 4, characterized in that: The end of the spool shaft (21) has threads. After the spool (30) is fitted onto the spool shaft (21), the threaded locking device (23) is threadedly connected to the spool shaft (21) to press and fix the spool (30) onto the spool shaft (21). The spool (30) and the spool shaft (21) are coaxial.

6. The stranding equipment for producing wires and cables according to claim 5, characterized in that: The turntable (17) is fixed at the end of the hollow spindle (15). The hollow spindle (15) is rotatably mounted on the equipment platform (10) via bearings. A driven synchronous wheel (16) is fixedly connected to one end of the hollow spindle (15) via a key. A matching hollow spindle tail end conductive slip ring (13) is embedded in the tail end of the hollow spindle (15). The power supply wire passes through the hollow spindle (15) and is electrically connected to the magnetic powder resistive device (22), the Hall sensor (24), and the current controller.

7. A stranding device for producing wires and cables according to claim 6, characterized in that: The power supply wires are fixed to the wall of the turntable (17) and the frame (19) by adhesive.

8. A stranding device for producing wires and cables according to claim 7, characterized in that: The drive unit (14) includes an external mounting housing and an internal geared motor. The output shaft of the geared motor is coaxially fixed with an active synchronous pulley, and the active synchronous pulley and the driven synchronous pulley (16) are connected by a synchronous belt.

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