Wrapping Tension Adjusting Mechanism

Abstract

The present invention discloses a wrapping tension adjusting mechanism, which includes a tape chuck device and a tension adjusting device. The tape chuck device includes a tape chuck, and the tape is installed on the tape chuck. The tension adjusting device includes a base, on which an outer hollow tube is rotatably installed. One end of the outer hollow tube is equipped with a pulley, and the other end has an internal gear disk. The internal gear disk is installed on the outer hollow tube through a limiting component. An inner hollow tube is installed inside the outer hollow tube. Outside the outer hollow tube, one end of the inner hollow tube is equipped with an adjusting rod, and the other end is equipped with an external gear disk. The teeth on the internal gear disk and the external gear disk mesh with each other. Between the base and the internal gear disk, there is an elastic device on the outer hollow tube. The elastic device applies a force to the internal gear disk to make the internal gear disk approach the external gear disk, and makes it return to its original state after the internal gear disk moves. The pulley is connected with a belt, the other end of the belt is fixedly connected, and the middle part of the belt surrounds the belt groove of the pulley. The present invention realizes automatic adjustment of the wrapping tension and keeps the tape tension stable.

Description

Technical Field

[0001] The present invention relates to a wrapping tension adjusting mechanism, which is used to adjust the wrapping tension during the wrapping operation of cable production. Background Art

[0002] During the production process of cables, various types of wrapping tapes are mostly used for wrapping. Wrapping machines can be divided into concentric wrapping machines, slicing wrapping machines, semi-slicing wrapping machines, etc. Wrapping machines mostly adopt electromagnetic tension or belt tension control.

[0003] Currently, belt tension is mainly adopted in wrapping machines, which has a simple structure and is convenient to operate. The wrapping tape is wound layer by layer around the central ring. During the use of the wrapping tape, whether it is electromagnetic tension or belt tension, the tension of the wrapping machine remains constant. In fact, as the wrapping tape is consumed, the circumferential radius becomes smaller and smaller. Due to the constant tension of the wrapping machine, the tension of the wrapping tape becomes too large, resulting in wrinkling defects when the wrapping tape is wrapped around the cable, and even the phenomenon of wrapping tape breakage. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wrapping tension adjusting mechanism to realize automatic adjustment of the wrapping tension and maintain the stability of the wrapping tape tension.

[0005] To solve the above technical problem, the wrapping tension adjusting mechanism of the present invention includes a wrapping tape chuck device and a tension adjusting device. The wrapping tape chuck device includes a wrapping tape chuck, the wrapping tape chuck has a pulley, the wrapping tape chuck is installed on a wrapping rod through a wrapping tape bearing, and the wrapping tape is installed on the wrapping tape chuck; the tension adjusting device includes a base, an outer hollow tube is installed on the base, and the outer hollow tube is rotatably (preferably, the outer hollow tube is installed on the base through a bearing) installed on the base; one end of the outer hollow tube is installed with a pulley, and the other end of the outer hollow tube has an internal gear disk; the internal gear disk is installed on the outer hollow tube through a limiting member, and the limiting member enables the internal gear disk to move axially on the outer hollow tube and makes the internal gear disk rotate following the outer hollow tube; an inner hollow tube is installed inside the outer hollow tube, outside the outer hollow tube, one end of the inner hollow tube is installed with an adjusting rod, and the other end of the inner hollow tube is installed with an external gear disk. When the internal gear disk and the external gear disk are close, the teeth on the internal gear disk and the external gear disk are engaged with each other; between the base and the internal gear disk, an elastic device is provided on the outer hollow tube, and the elastic device applies a force to the internal gear disk to make the internal gear disk approach the external gear disk and restore its original state after the internal gear disk moves; the pulley is connected with a belt, the other end of the belt is fixedly connected, and the middle of the belt surrounds the pulley groove of the pulley.

[0006] The wrapping tension adjusting mechanism further includes a tension selection device. The tension selection device includes a tension base, on which a number of spring tension gauges with different ranges are installed. The other end of the belt is fixedly connected to the spring tension gauge, so as to select the most suitable spring tension gauge according to the changes of different types of wrapping tapes and cable diameters.

[0007] In order to reduce friction, a guide wheel is arranged at the end of the adjusting rod.

[0008] Preferably, the limiting component includes a limiting piece on the outer hollow tube and a limiting groove on the inner gear disk. The limiting pieces are distributed along the axial direction of the outer hollow tube. The limiting pieces are located in the limiting grooves. The inner gear disk moves axially along the limiting pieces. The limiting pieces limit the inner gear disk from rotating along the outer hollow tube, so that the inner gear disk rotates following the outer hollow tube.

[0009] Preferably, the elastic device is a spring.

[0010] During use, first, according to the actual situation, a spring tension gauge with a suitable range needs to be selected. One end of the belt is connected to the spring tension gauge by an S-shaped iron hook. The other end of the belt is fixedly installed on the belt pulley. The middle part of the belt (not strictly the middle position) is wound in the belt groove of the pulley. At this time, the spring tension gauge is in a stretched state, the wrapping tape chuck has a certain tension, and the adjusting rod is in the position closest to the wrapping rod.

[0011] Install the whole roll of wrapping tape on the wrapping rod of the wrapping tape chuck. The wrapping tape chuck (two pieces) firmly fixes the wrapping tape. Rotate the adjusting rod counterclockwise and lift it against the surface of the wrapping tape, and at the same time drive the inner hollow tube to rotate counterclockwise. Due to the action of the spring, the inner gear disk and the outer gear disk remain in a meshed state. The inner hollow tube drives the outer hollow tube to rotate counterclockwise, and the belt pulleys on the outer hollow tube all rotate counterclockwise, tightening the belt and increasing the tension. At this time, the adjusting rod has an obvious tension, which is greater than the tension when the adjusting rod is closer to the wrapping rod position.

[0012] Tension fine-tuning: The main adjustment of the wrapping tension lies in the selection of the spring tension gauge. The fine-tuning is carried out within the maximum range of the selected spring tension gauge. After the installation of the whole wrapping tape is completed, the adjusting rod on the inner hollow tube leans against the wrapping tape, acting as a fulcrum of a force. At this time, the position of the inner hollow tube remains fixed. Press the inner gear disk on the outer hollow tube by hand to further compress the spring (elastic device) and separate it from the outer gear disk; or keep the inner gear disk stationary and pull out the inner hollow tube outward, also separating the inner gear disk and the outer gear disk. At this time, turn the inner gear disk counterclockwise by hand to increase the belt tension, and the value can be displayed and read on the connected spring tension gauge. After determining the tension value, the inner gear disk and the outer gear disk are meshed to maintain the determined tension value, and the original tension value of the wrapping tape is thus determined.

[0013] As the wrapping tape is consumed, the adjusting rod rotates clockwise as the wrapping tape decreases (the thickness decreases, that is, the circumferential radius continuously decreases), and the adjusting rod drives the inner hollow tube to rotate clockwise (towards the direction close to the winding rod). The inner hollow tube and the outer hollow tube are engaged by two toothed discs, and the outer hollow tube rotates clockwise with the inner hollow tube, driving the pulley connected with the belt to rotate, thereby realizing the reduction of tension. The present invention realizes the automatic adjustment of the winding tension and keeps the wrapping tape tension stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0015] Figure 1 It is a schematic diagram of the present invention.

[0016] Figure 2 It is a component diagram of the tension adjusting device.

[0017] Figure 3 It is a structural diagram of the tension adjusting device.

[0018] Figure 4 It is a schematic diagram of the pulley and internal toothed disc on the outer hollow tube. SPECIFIC EMBODIMENTS

[0019] As Figures 1-4 shown, the winding tension adjusting mechanism includes:

[0020] - The tension adjusting device 1, including a base 10, on which an outer hollow tube 12 is installed, and the outer hollow tube 12 is rotatably installed on the base 10 through a bearing 11.

[0021] One end of the outer hollow tube 12 is installed with a pulley 13, and the other end of the outer hollow tube 12 has an internal toothed disc 14; the internal toothed disc 14 is installed on the outer hollow tube 12 through a limiting component, and the limiting component enables the internal toothed disc 14 to move axially (the axial direction of the outer hollow tube 12) on the outer hollow tube 12 and makes the internal toothed disc 14 rotate with the outer hollow tube 12. Specifically, as Figure 4 shown, the limiting component includes a limiting piece 23 on the outer hollow tube 12 and a limiting groove 22 on the internal toothed disc 14. The limiting piece 23 is distributed along the axial direction of the outer hollow tube 12, the limiting piece 23 is located in the limiting groove 22, the internal toothed disc 14 moves axially along the limiting piece 23, and the limiting piece 23 restricts the internal toothed disc 14 from rotating along the outer hollow tube 12, so that the internal toothed disc 14 rotates with the outer hollow tube 12.

[0022] An inner hollow tube 16 is installed inside the outer hollow tube 12. Outside the outer hollow tube 12, one end of the inner hollow tube 16 is installed with an adjusting rod 20 (in a shape of a curved knife), and a guide wheel 21 is arranged at the end of the adjusting rod 20. The other end of the inner hollow tube 16 is installed with an external gear disk 17. When the internal gear disk 14 and the external gear disk 17 are close, the teeth on the internal gear disk 14 and the external gear disk 17 (the teeth 15 on the internal gear disk 14 and the teeth 18 on the external gear disk 17 respectively) are engaged with each other; between the base 10 and the internal gear disk 14, an elastic device is provided on the outer hollow tube 12, and the elastic device applies a force to the internal gear disk 14 to make the internal gear disk 14 approach the external gear disk 17 and restore its original state after the internal gear disk 14 moves. Specifically, the elastic device is preferably a spring 19.

[0023] - A tension selection device 2, the tension selection device 2 includes a tension base, and a plurality of spring tension gauges 4 with different ranges are installed on the tension base. The tension base is connected to a tension bearing, and the structure can rotate freely in a circle.

[0024] - A tape clamping chuck device 3, including two tape clamping chucks 7, the tape clamping chucks 7 are provided with pulley wheels 8, and the tape clamping chucks 7 are installed on a winding rod through tape bearings 9, and the tape is installed on the tape clamping chucks 7.

[0025] A belt 6 is connected to the pulley wheel 13 (the pulley wheel 13 is connected to one end of the belt 6), the other end of the belt 6 is fixedly connected to the spring tension gauge 4 through an S-shaped iron hook 5, and the middle part of the belt 6 is wound around the pulley groove of the pulley wheel 8. At the same time, the most suitable spring tension gauge 4 can be selected according to the changes of different tape types and cable diameters.

[0026] When in use, first, according to the actual situation, a spring tension gauge 4 with a suitable range needs to be selected. One end of the belt 6 is connected to the spring tension gauge 4 through an S-shaped iron hook 5. The other end of the belt 6 is fixedly installed on the pulley wheel 13. The middle part of the belt 6 is wound around the pulley groove of the pulley wheel 8. At this time, the spring tension gauge 4 is in a stretched state, the tape clamping chuck 7 has a certain tension, and the adjusting rod 20 is in the position closest to the winding rod.

[0027] Install the whole reel of tape on the winding rod of the tape clamping chuck 7. The tape clamping chuck 7 (two pieces) firmly fixes the tape. Rotate the adjusting rod 20 counterclockwise and lift it against the surface of the tape, and at the same time drive the inner hollow tube 16 to rotate counterclockwise. Due to the action of the spring 19, the internal gear disk 14 and the external gear disk 17 remain in an engaged state; the inner hollow tube 16 drives the outer hollow tube 12 to rotate counterclockwise, and the pulley wheels 13 on the outer hollow tube 12 all rotate counterclockwise, tightening the belt 6 and increasing the tension. At this time, the adjusting rod 20 has an obvious tension, which is greater than the tension when the adjusting rod 20 is closer to the winding rod position.

[0028] Tension fine-tuning: The main adjustment of the wrapping tension lies in the selection of the spring tensiometer 4. The fine-tuning is carried out within the maximum range of the selected spring tensiometer 4. After the installation of the entire tape is completed, the adjusting rod 20 on the hollow tube 16 leans on the tape, acting as a fulcrum of force. At this time, the position of the hollow tube 16 remains fixed. Press the internal gear disk 14 on the outer hollow tube 12 by hand to further compress the spring 19 (elastic device) and separate it from the external gear disk 17; or keep the internal gear disk 14 stationary and pull out the hollow tube 16 outward, also separating the internal gear disk 14 and the external gear disk 17. At this time, turn the internal gear disk 14 counterclockwise by hand to increase the belt tension, and the value can be read and displayed on the connected spring tensiometer 4; after determining the tension value, the internal gear disk 14 and the external gear disk 17 are engaged to maintain the determined tension value, and the original tension value of the tape is thus determined.

[0029] As the tape is consumed, the adjusting rod 20 rotates clockwise as the tape decreases (the thickness decreases, that is, the circumferential radius continuously decreases). The adjusting rod 20 drives the hollow tube 16 to rotate clockwise (towards the direction close to the wrapping rod). The hollow tube 16 and the outer hollow tube 12 are engaged by two gear disks (the internal gear disk 14 and the external gear disk 17). The outer hollow tube 12 rotates clockwise with the hollow tube 16, driving the pulley 8 connected to the belt 6 to rotate, thereby realizing the reduction of tension.

[0030] The above embodiments do not limit the present invention in any way. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. Wrapping tension adjusting mechanism, characterized in that It includes a tape clamping chuck device and a tension adjusting device. The tape clamping chuck device includes a tape clamping chuck which has a pulley. The tape clamping chuck is installed on a wrapping rod through a tape bearing, and a tape is installed on the tape clamping chuck. The tension adjusting device includes a base on which an outer hollow tube is installed. The outer hollow tube is rotatably installed on the base. One end of the outer hollow tube is installed with a pulley, and the other end of the outer hollow tube has an internal gear disc. The internal gear disc is installed on the outer hollow tube through a limiting component. The limiting component enables the internal gear disc to axially move on the outer hollow tube and makes the internal gear disc rotate following the outer hollow tube. An inner hollow tube is installed inside the outer hollow tube. Outside the outer hollow tube, one end of the inner hollow tube is installed with an adjusting rod, and the other end of the inner hollow tube is installed with an external gear disc. When the internal gear disc and the external gear disc are close, the teeth on the internal gear disc and the external gear disc mesh with each other. Between the base and the internal gear disc, there is an elastic device on the outer hollow tube. The elastic device applies a force to the internal gear disc to make the internal gear disc approach the external gear disc and restore its original state after the internal gear disc moves. The pulley is connected with a belt, and the other end of the belt is fixedly connected. The middle part of the belt surrounds the belt groove of the pulley.

2. The wrapping tension adjusting mechanism according to claim 1, characterized in that It further includes a tension selection device. The tension selection device includes a tension base on which a number of spring tension gauges with different ranges are installed. The other end of the belt is fixedly connected with the spring tension gauges.

3. The wrapping tension adjusting mechanism according to claim 1, wherein: A guide wheel is arranged at the end of the adjusting rod.

4. The wrapping tension adjusting mechanism according to claim 1, characterized in that: The limiting component includes a limiting piece on the outer hollow tube and a limiting groove on the internal gear disc. The limiting pieces are axially distributed along the outer hollow tube. The limiting pieces are located in the limiting grooves. The internal gear disc axially moves along the limiting pieces, and the limiting pieces limit the internal gear disc from rotating along the outer hollow tube, making the internal gear disc rotate following the outer hollow tube.

5. The wrapping tension adjusting mechanism according to claim 1, characterized in that: The elastic device is a spring.

6. The wrapping tension adjusting mechanism according to claim 1, wherein: The outer hollow tube is installed on the base through a bearing.

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