High-speed constant-tension wrapping machine

Abstract

The utility model belongs to the field of cable production equipment, and particularly relates to a high-speed constant-tension wrapping machine, which comprises a rack, a rotating cage which is arranged on the rack and is driven to rotate, a reel is arranged on the rotating cage, a cable passes through the center of the rotating cage when the wrapping machine works, and a reel brake device is arranged on the rotating cage. The reel braking device comprises a hysteresis brake, a transmission gear set, a photoelectric sensor and a controller, the hysteresis brake is installed on the rotating cage, an output shaft of the hysteresis brake is connected with a rotating shaft of the reel through the transmission gear set, and the photoelectric sensor is installed on the rotating cage and used for sensing rotation of the reel; the controller is electrically connected with the hysteresis brake and the photoelectric sensor respectively, receives a signal of the photoelectric sensor and controls the output power of the hysteresis brake during working, and the wrapping machine ensures that the tension of the wrapping tape is not increased and the wrapping tape is always straightened in the winding process, so that the wrapping speed of the whole machine is improved, and the cable production efficiency is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of cable production equipment and relates to the process of soft tape wrapping of cable core, specifically a high-speed constant tension wrapping machine. Background Technology

[0002] In cable production, to increase strength or insulation, a wrapping machine is used to wrap the cable core. The wrapping material can be either rigid metal strip or flexible cloth strip. A typical wrapping machine consists of a rotating cage mounted on a frame, with a reel and a tape guide mechanism mounted on the cage. To ensure consistent wrapping angles, a braking device is usually installed on the reel to keep the wrapping tape taut during operation. Existing braking devices are clamp-type brakes, which cannot adjust the braking force in real time. If the same braking force is maintained, the tension on the wrapping tape increases as the tape is released layer by layer from the reel. This is fine for wrapping rigid metal strips, but when wrapping flexible cloth strips, the tension may exceed the tape's capacity, causing it to break. Therefore, existing wrapping machines can only reduce speed to decrease tension when wrapping cloth strips, affecting work efficiency. Furthermore, existing clamp-type brakes cannot detect tape breakage and cannot promptly resolve the fault, causing work delays. Utility Model Content

[0003] The purpose of this invention is to provide a high-speed constant tension wrapping machine with a simple structure that can adapt to wrapping tapes of any material.

[0004] The technical solutions for achieving the above objectives include the following:

[0005] A high-speed constant tension winding machine includes a frame and a rotating cage mounted on the frame and driven to rotate. A reel is mounted on the rotating cage. During operation, the cable passes through the center of the rotating cage. The rotating cage is equipped with a reel braking device, which includes a hysteresis brake, a transmission gear set, a speed sensor, and a controller. The hysteresis brake is mounted on the rotating cage, and its output shaft is connected to the rotating shaft of the reel through the transmission gear set. A photoelectric sensor is mounted on the rotating cage to sense the rotation of the reel. The controller is electrically connected to both the hysteresis brake and the photoelectric sensor. During operation, it receives signals from the photoelectric sensor and controls the output power of the hysteresis brake.

[0006] Furthermore, the rotating cage is symmetrically provided with two reels on its front and rear sides.

[0007] Furthermore, the axis of rotation of the reel is perpendicular to the center of the rotating cage.

[0008] Furthermore, the transmission gear set includes two meshing gears, a large gear and a small gear. The large gear is connected to the rotating shaft of the reel and rotates synchronously with it, while the small gear is connected to the output shaft of the hysteresis brake and rotates synchronously with it.

[0009] Furthermore, a set of sensing through holes is provided circumferentially on the disk surface of the large gear, and the optical path of the photoelectric sensor is aligned with the sensing through holes.

[0010] When the aforementioned high-speed constant tension wrapping machine is in use, the fabric strip is wound onto the reel. The cable pulls the fabric strip head through the center of the rotating wheel. As the rotating wheel rotates, the reel rotates around the cable, and the fabric strip wraps around the cable. The fabric strip pulls the reel to rotate, and the hysteresis brake brakes the reel through a transmission gear set. The braking force is designed to ensure that the fabric strip remains taut at all times. The amount of fabric strip wound on the reel decreases layer by layer, and the required braking force decreases as the layers decrease. The photoelectric sensor detects the number of rotations of the reel to obtain the amount of fabric strip remaining on the reel. After obtaining the number of rotations of the reel, the controller can calculate the required braking force and issue corresponding control signals to the hysteresis brake. The controller outputs the required braking force to the hysteresis brake, enabling timely adjustment of the reel's braking force. This ensures the fabric strip remains taut under constant tension, allowing for higher winding speeds to complete the cable wrapping work and improving work efficiency. Furthermore, the controller can be electrically connected to the overall controller of the wrapping machine. If a material problem in a part of the fabric strip causes it to break, the reel stops rotating, and the photoelectric sensor immediately detects this. The controller then sends a signal to the overall controller of the wrapping machine, stopping the machine from operating after the fabric strip breaks. This facilitates timely troubleshooting and improves work efficiency.

[0011] The high-speed constant tension wrapping machine of this invention uses a hysteresis braking device instead of a clamp-type braking device, which is conducive to timely adjustment of braking force, ensuring that the tension of the wrapping tape does not increase and remains taut during the winding process, which helps to improve the overall wrapping speed and thus improve the cable production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the high-speed constant tension wrapping machine structure as an example.

[0013] Figure 2 A schematic diagram of the reel and its braking device as shown in the embodiment;

[0014] Figure 3 This is a schematic diagram illustrating the automatic braking force adjustment principle in an embodiment.

[0015] In the diagram, 1. Frame; 2. Drive motor; 3. Rotating cage; 4. Reel; 4-1. Shaft; 5. Braking device; 5-1. Hysteresis brake; 5-2. Photoelectric switch; 5-3. Large gear; 5-4. Small gear; 6. Cable. Detailed Implementation

[0016] The present invention will be described in detail below with reference to the embodiments.

[0017] See Figures 1 to 3 A high-speed constant tension wrapping machine includes a frame 1 and a rotating cage 3 mounted on the frame 1 and driven by a drive motor 2. Two reels 4 are symmetrically arranged on the front and rear sides of the rotating cage 3. The rotating shaft 4-1 of the reels is perpendicular to the center of the rotating cage 3. A reel braking device 5 is provided on the rotating cage 3. The reel braking device 5 includes a hysteresis brake 5-1, a transmission gear set, a photoelectric switch 5-2, and a controller. The hysteresis brake 5-1 is mounted on the rotating cage 3. The transmission gear set consists of two meshing gears, a large gear 5-3 and a small gear. The large gear 5-3 is mounted on the rotating shaft 4-1 of the reel 4 and rotates synchronously with it. The small gear 5-4 is connected to the output shaft of the hysteresis brake 5-1 and rotates synchronously with it. The photoelectric switch 5-2 is mounted on the rotating cage 3 on one side of the reel of the large gear 5-3. A set of sensing through holes is provided circumferentially on the surface of the reel of the large gear 5-3. The light path of the photoelectric switch 5-2 is aligned with the sensing through holes. The controller is electrically connected to the hysteresis brake 5-1 and the photoelectric switch 5-2 respectively. When working, it receives the signal from the photoelectric switch 5-2 and controls the output power of the hysteresis brake 5-1.

[0018] When the high-speed constant tension wrapping machine in this embodiment is working, the cable 6 passes through the center of the rotating cage 3. As the winding tape on the reel 4 decreases layer by layer, the photoelectric switch 5-2 transmits the number of reel rotations to the controller. The controller outputs a command to gradually reduce the output power of the hysteresis brake 5-1. The braking force of the hysteresis brake 5-1 gradually decreases, so that the tension of the winding tape gradually decreases and remains taut, so that the winding tape always maintains the minimum tension.

[0019] The high-speed constant tension wrapping machine of this embodiment can wrap a single layer of wrapping tape or wrap two layers of wrapping tape at the same time. It is suitable for both metal wrapping tape and soft fabric wrapping tape, and has the advantages of wide material adaptability and high work efficiency.

Claims

1. A high-speed constant tension winding machine, comprising a frame, a rotating cage mounted on the frame and driven to rotate, a reel mounted on the rotating cage, wherein during operation, the cable passes through the center of the rotating cage, and the rotating cage is equipped with a reel braking device, characterized in that, The reel braking device includes a hysteresis brake, a transmission gear set, a photoelectric sensor, and a controller. The hysteresis brake is mounted on the rotating cage, and its output shaft is connected to the rotating shaft of the reel through the transmission gear set. The photoelectric sensor is mounted on the rotating cage to sense the rotation of the reel. The controller is electrically connected to both the hysteresis brake and the photoelectric sensor. During operation, it receives signals from the photoelectric sensor and controls the output power of the hysteresis brake.

2. The high-speed constant tension wrapping machine according to claim 1, characterized in that, The rotating cage has two reels symmetrically arranged on its front and rear sides.

3. The high-speed constant tension wrapping machine according to claim 2, characterized in that, The axis of rotation of the reel is perpendicular to the center of the rotating cage.

4. The high-speed constant tension wrapping machine according to claim 1, characterized in that, The transmission gear set includes two meshing gears, a large gear and a small gear. The large gear is connected to the rotating shaft of the reel and rotates synchronously with it, while the small gear is connected to the output shaft of the hysteresis brake and rotates synchronously with it.

5. The high-speed constant tension wrapping machine according to claim 4, characterized in that, The large gear has a set of sensing through holes along the circumferential direction on its disc surface, and the optical path of the photoelectric sensor is aligned with the sensing through holes.

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