Multi-core stranding machine

By setting a constant tension wire feeding device on the stranding machine, the wire feeding speed is automatically adjusted, which solves the problem of unstable core wire feeding caused by changes in the spool radius, improves the stranding and wrapping quality, and realizes intelligent production.

CN224519579UActive Publication Date: 2026-07-17ZHENGWEI ELECTRICAL TECH (JIANGSU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENGWEI ELECTRICAL TECH (JIANGSU) CO LTD
Filing Date
2025-06-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing stranding machines, the change in the radius of the wire spool during the wire feeding process causes the core wire feeding speed to be unstable, which affects the stranding and wrapping quality. It is necessary to adjust the feeding speed in a timely manner to maintain constant tension.

Method used

A constant tension wire feeding device is installed on the rotating support, including a wire feeding servo motor, rollers, flexible connectors, a rotary servo motor, and a tension take-up wheel. The wire feeding speed is automatically adjusted by a displacement detection component, and the tension and wire speed are kept constant by a servo controller.

Benefits of technology

It has achieved automatic control of core wire tension and linear speed, which has improved production efficiency and cable quality, and realized digital and intelligent production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multicore wire stranding machine, including frame, swivel support, rotation axis, drive mechanism and at least two constant tension pay -off device, constant tension pay -off device sets up in swivel support and gives out core wire, drive mechanism drives rotation axis and swivel support rotation, constant tension pay -off device includes frame and sets up in the pay -off reel of frame, pay -off servo motor, gyro wheel, flexible connecting piece, rotation servo motor, tension take -up wheel, displacement detection subassembly and servo controller, and the output of pay -off servo motor is connected with the pivot of pay -off reel, and gyro wheel is linearly movably arranged in the frame, the output shaft of rotation servo motor is connected with tension take -up wheel, and displacement detection subassembly detects the rotation angle of the output shaft of rotation servo motor or detects the displacement of gyro wheel. The utility model can automatically control the tension of the core wire pay -off of stranding machine, makes the tension and line speed of cable keep constant, realizes digitization and intelligent production, effectively improves production efficiency and the quality of cable.
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Claims

1. A multi-core stranding machine characterized by: The device includes a frame, a rotating support, a rotating shaft, a drive mechanism, and at least two constant tension wire feeding devices. The constant tension wire feeding devices are evenly distributed around the central axis of the rotating support. The rotating support is coaxially fixed to the rotating shaft. The rotating shaft is laterally positioned on the frame and has a central hole extending through both ends along its central axis, through which a center line passes. The rotating shaft has channels corresponding to the constant tension wire feeding devices but offset from the central holes. The constant tension wire feeding devices feed out core wires, allowing the core wires to pass through the channels and approach the center line. The drive mechanism is mounted on the frame and drives the rotating shaft and the rotating support to rotate, causing the core wires to twist with the center line. The constant tension wire feeding device includes a frame and a wire feeding reel, a wire feeding servo motor, rollers, a flexible connector, a rotary servo motor, a tension take-up roller, a displacement detection component, and a servo controller, all disposed within the frame. The wire feeding reel is pivotally connected to the frame. The output end of the wire feeding servo motor is connected to the rotating shaft of the wire feeding reel to drive the reel to rotate and feed out the core wire. The rollers rotate around a central axis, which is linearly movable within the frame. The core wire is fed outwards after passing around the rollers. One end of the flexible connector is connected to the central axis of the rollers. The other end of the flexible connector is eccentrically connected to the tension take-up roller; the output shaft of the rotary servo motor is connected to the tension take-up roller to output torque to the tension take-up roller, thereby providing tension to the core wire by pulling the roller through the flexible connector; the displacement detection component detects the rotation angle of the output shaft of the rotary servo motor or detects the displacement of the roller, thereby controlling the output speed of the pay-off servo motor through the servo controller; the displacement detection component, the rotary servo motor and the pay-off servo motor are respectively electrically connected to the servo controller.

2. The multi-core stranding machine of claim 1, wherein: The displacement detection component is an angular displacement sensor, and the angular displacement sensor is an absolute encoder. The absolute encoder is disposed on the tail of the output shaft of the rotary servo motor and electrically connected to the servo controller to detect the rotation angle of the output shaft of the rotary servo motor.

3. The multi-strand wire stranding machine of claim 1, wherein: The displacement detection component is a linear displacement sensor, which includes a Hall sensor and a sensing plate. The Hall sensor is mounted on the frame and electrically connected to the servo controller. The sensing plate is connected to the central axis and is equipped with a magnet. The Hall sensor detects the position of the sensing plate.

4. The multi-strand wire stranding machine of claim 1, wherein: A transmission mechanism is provided between the wire feeding servo motor and the rotating shaft of the wire feeding reel.

5. The multi-core stranding machine of claim 4, wherein: The transmission mechanism includes a second driving pulley, a second driven pulley, and a transmission belt. The second driving pulley is connected to the output end of the wire feeding servo motor, the second driven pulley is connected to one end of the shaft of the wire feeding reel, and the transmission belt is wrapped around the second driving pulley and the second driven pulley respectively.

6. The multi-strand wire stranding machine of claim 1, wherein: The frame is provided with two parallel and spaced-apart guide rails, and the two ends of the central shaft are connected to sliding sleeves, which are slidably fitted onto the guide rails.

7. The multi-strand wire stranding machine of claim 1, wherein: The constant tension wire feeding device also includes a connecting frame, one end of which is fixedly connected to one end of the central shaft, and the other end of which is fixedly connected to the other end of the central shaft. The flexible connector is connected to the middle of the connecting frame.

8. The multi-strand wire stranding machine of claim 1, wherein: The constant tension wire feeding device also includes a guide wheel, which is pivotally connected to the frame and located between the wire feeding reel and the roller. The core wire passes around the roller and then around the guide wheel before being output.

9. The multi-strand wire stranding machine of claim 1, wherein: The frame has a mounting bracket on its outer side, and the servo controller is mounted on the mounting bracket.