Double traction mechanism of pressure wheels on the rotating shaft and wrapping mechanism

Abstract

The present invention discloses a double traction mechanism of a pressing wheel on a rotating shaft and a winding mechanism, which includes a rotating shaft, a turntable, a traction assembly, a first driving mechanism and a second driving mechanism. The rotating shaft is rotatably arranged. The traction assembly includes a first steering wheel and a pressing wheel group. The turntable is coaxially fixed at one end of the rotating shaft. The first steering wheel is arranged on the turntable, and the distance from the first steering wheel to the center of the turntable is less than the distance from the pressing wheel group to the center of the turntable. The first driving mechanism drives the pressing wheel group to rotate. The second driving mechanism drives the rotating shaft to rotate so as to drive the wrapping tape to rotate. The double traction mechanism of the pressing wheel on the rotating shaft of the present invention can shorten the traction length of the wrapping tape, reduce wind resistance, lower noise and improve the running stability.

Description

Technical Field

[0001] The present invention relates to a wire wrapping machine, and particularly to a double traction mechanism of a pressing wheel on a rotating shaft and a wrapping mechanism. Background Art

[0002] During the wire wrapping production process of a cable, first, a core wire is output by being pulled by a traction assembly, and at the same time, a wrapping tape is output by a tape feeding mechanism. Finally, the wrapping tape wraps around the core wire with a certain tension, so that the core wire and the wrapping tape are combined to form a cable. After the existing wire wrapping machine's tape feeding mechanism releases the wrapping tape, the wrapping tape needs to pass through the rotating shaft of the wrapping mechanism, then bypass a traction wheel, and finally is led out to the outermost end through a wrapping bracket and wrapped around the core wire. However, since the traction wheel and the wrapping bracket are arranged in sequence along the output direction of the core wire, the distance from the point where the wrapping tape is pulled out to the position where it wraps around the core wire is still very large. Under the traction force of the core wire, the wrapping tape is easily stretched and elongated, resulting in deformation of the wrapping tape; moreover, during the high-speed rotation process, the wrapping tape is subjected to a large air resistance, which leads to high working noise and unstable rotation. Summary of the Invention

[0003] The purpose of the present invention is to provide a double traction mechanism of a pressing wheel on a rotating shaft with a small traction length of the wrapping tape, small air resistance, low noise, and high running stability.

[0004] Another purpose of the present invention is to provide a wrapping mechanism with a small traction length of the wrapping tape, small air resistance, low noise, and high running stability.

[0005] To achieve the above purposes, the double traction mechanism of a pressing wheel on a rotating shaft provided by the present invention includes a rotating shaft, a turntable, a traction assembly, a first driving mechanism, and a second driving mechanism. The rotating shaft is rotatably arranged; the traction assembly includes a first turning wheel and a pressing wheel group pivotally connected to one side of the turntable in a centrosymmetric manner; the turntable is coaxially fixed to one end of the rotating shaft; the first turning wheel is arranged on the turntable, and the distance from the first turning wheel to the center of the turntable is less than the distance from the pressing wheel group to the center of the turntable; the first driving mechanism drives the pressing wheel group to rotate so as to drive the pressing wheel group to pull the wrapping tape; the second driving mechanism drives the rotating shaft to rotate to drive the wrapping tape to rotate.

[0006] Compared with the prior art, in the present invention, two pressing wheel sets are arranged on the turntable and symmetrically arranged, and a first steering wheel is arranged on the turntable, so that the distance from the first steering wheel to the center of the turntable is less than the distance from the pressing wheel set to the center of the turntable. Therefore, the two pressing wheel sets and the first steering wheel are basically in the same radial plane. When the wrapping tape bypasses the two pressing wheel sets and the first steering wheel to wrap the core wire, the axial distance from the rotating shaft to the core wire wrapped by the wrapping tape is very short. Thus, the traction length of the wrapping tape along the axis is very small, and threading the tape is very easy and convenient; when rotating at high speed, the wind resistance becomes extremely small, effectively reducing the vibration of the wrapping tape, greatly reducing the noise, and effectively improving the stability of rotation, enabling higher-speed rotation, and thus improving work efficiency. In addition, since two pressing wheel sets are used to convey the wrapping tape, the front pressing wheel set can directly traction the wrapping tape, and the front pressing wheel set can isolate the wrapping tape in front, preventing the change in the speed or amount of the released wrapping tape from affecting the wrapping tape to be wrapped around the core wire later. Therefore, the two pressing wheel sets can completely shield the influencing factors outside the two pressing wheel sets, enabling the wrapping tape to be stably output and ensuring the stability of the wrapping tape.

[0007] Preferably, the traction assembly further includes a driving wheel and a driven wheel. The driving wheel is coaxially and rotatably sleeved on one end of the rotating shaft, the driven wheel is coaxially fixed with one of the pressing wheels of the two pressing wheel sets respectively, the driving wheel is in rolling contact with the driven wheel, and the first driving mechanism can drive the driving wheel to rotate. By arranging the driving wheel and the driven wheel and making the driving wheel in rolling contact with the two driven wheels, the first driving mechanism can be used to drive the driving wheel to rotate, so as to drive the two pressing wheel sets to rotate simultaneously, achieving the effect of double traction of the wrapping tape and improving the stability of the wrapping tape conveying.

[0008] Specifically, the first driving mechanism includes a first servo motor, a first driving pulley, a first driven pulley and a first synchronous belt. The first driving pulley is arranged at the output end of the first servo motor, the first driven pulley is coaxially and rotatably sleeved on the rotating shaft, the first driven pulley is coaxially fixed with the driving wheel, and the first synchronous belt is wound between the first driving pulley and the first driven pulley. By coaxially and rotatably sleeving the first driven pulley on the rotating shaft and coaxially fixing it with the driving wheel, and then using the first driving pulley and the first synchronous belt to drive the first driven pulley to rotate, the pressing wheel set can be driven to rotate while not affecting the revolution of the pressing wheel set around the central axis of the turntable, realizing the traction of the wrapping tape, with a simple structure and very convenient control.

[0009] Preferably, a through groove is provided on the outer sidewall of the rotating shaft along the central axis direction, and the through groove extends from the outer side surface of the rotating shaft to the end surface near one end of the pressing wheel group. This can enable the wrapping tape to rotate with the rotating shaft and be conveyed forward at the same time, and the wind resistance in the through groove is small, so the conveying is more stable.

[0010] Preferably, the traction mechanism further includes a guiding wheel, and the guiding wheel is arranged at one end of the rotating shaft away from the pressing wheel group to guide the wrapping tape into the through groove. Through the guiding of the guiding wheel, the wrapping tape can accurately and stably enter the rotating shaft, improving the running smoothness.

[0011] Preferably, the second driving mechanism includes a second servo motor, a second driving pulley, a second driven pulley and a second synchronous belt. The second driving pulley is arranged at the output end of the second servo motor, the second driven pulley is coaxially fixed on the rotating shaft, and the second synchronous belt is wound between the second driving pulley and the second driven pulley.

[0012] Preferably, the traction assembly further includes a second steering wheel, and the second steering wheel is arranged on the turntable to guide the wrapping tape to the pressing wheel group; the distance from the second steering wheel to the center of the turntable is less than the distance from the pressing wheel group to the center of the turntable. By arranging the second steering wheel, the wrapping tape can be smoothly and accurately conveyed to the pressing wheel group after entering the turntable, thereby improving the smoothness and stability of the wrapping tape conveying.

[0013] Preferably, a first bracket is provided on the turntable, the first bracket is fixed on the turntable, and the first steering wheel is pivotally connected to the first bracket.

[0014] Specifically, a second bracket is provided on the turntable, the second bracket is fixed on the turntable, and the second steering wheel is pivotally connected to the second bracket.

[0015] A winding mechanism includes a central rod and a double-pressing-wheel traction mechanism. The central rod can allow the core wire to pass through from the inside. The rotating shaft is coaxially and rotatably sleeved outside the central rod to drive the wrapping tape to rotate and wrap around the core wire. Description of the Drawings

[0016] Figure 1 is a perspective view of the winding mechanism of the present invention.

[0017] Figure 2 is a side view of the winding mechanism of the present invention.

[0018] Figure 3 is an axial sectional view of the winding mechanism of the present invention.

[0019] Figure 4 This is the right view of the winding mechanism of the present invention. Detailed implementation manners

[0020] To describe in detail the technical content, structural features, and achieved effects of the present invention, the following will be described in detail in conjunction with the implementation manners and with reference to the accompanying drawings.

[0021] As Figures 1 to 4 shown, the winding mechanism 100 of the present invention includes a press wheel double traction mechanism 1 and a central rod 2 through which the core wire 200 passes from the inside. The press wheel double traction mechanism 1 includes a rotating shaft 11, a turntable 12, a traction assembly 13, a first driving mechanism 14, a second driving mechanism 15, and a base 17. The outer side of the rotating shaft 11 is rotatably arranged on the base 17 through a bearing. The rotating shaft 11 is coaxially sleeved with the central rod 2, and bearings are arranged between both ends of the rotating shaft 11 and the central rod 2, so that the rotating shaft 11 can rotate relative to the central rod 2. The traction assembly 13 includes a first steering wheel 131 and a press wheel group 132 pivotally connected to one side of the turntable 12 in a central symmetry manner. Each press wheel group 132 has two press wheels 132a that are pressed against each other and can be in rolling contact. The rotating shaft 132b of the press wheel 132a is parallel to the rotating shaft 11. The turntable 12 is coaxially fixed to one end of the rotating shaft 11. The first steering wheel 131 is arranged on the turntable 12, and the distance from the first steering wheel 131 to the center of the turntable 12 is less than the distance from the press wheel group 132 to the center of the turntable 12. The first driving mechanism 14 drives the press wheel group 132 to rotate, so that the press wheel group 132 tractionally outputs the wrapping tape 300 forward, and the wrapping tape 300 extends to the core wire 200 through the first steering wheel 131; the second driving mechanism 15 drives the rotating shaft 11 to rotate to drive the wrapping tape 300 to rotate and wrap the core wire 200.

[0022] Please refer to Figure 3 and Figure 4 , specifically, the traction assembly 13 further includes a first bracket 133. The first bracket 133 is arranged on the turntable 12 and fixed to the turntable 12. The first steering wheel 131 is pivotally connected to the first bracket 133, and the projection of the pivot axis on the horizontal plane intersects with the rotating shaft 132b of the press wheel 132a of the press wheel group 132. In this embodiment, the two are perpendicular. In this embodiment, the number of the first steering wheels 131 is two, which are arranged along the central axis direction of the rotating shaft 11, and the wrapping tape 300 needs to bypass the two first steering wheels 131.

[0023] Please refer to again Figure 3 and Figure 4, the traction assembly 13 further includes a second steering wheel 134 and a second bracket 135. The second steering wheel 134 is disposed on the turntable 12 and on the side opposite to the first steering wheel 131 to guide the strap 300 to the pressure wheel group 132. Specifically, the second bracket 135 is fixedly disposed on the turntable 12, and the second steering wheel 134 is pivotally connected to the second bracket 135. The pivot axis intersects with the projection of the rotation axis 132b of the pressure wheel 132a of the pressure wheel group 132 on the horizontal plane. In this embodiment, the two are perpendicular. In addition, the pivot axis of the second steering wheel 134 is parallel to the pivot axis of the first steering wheel 131. The distance from the second steering wheel 134 to the center of the turntable 12 is less than the distance from the pressure wheel group 132 to the center of the turntable 12. In this embodiment, the number of the second steering wheels 134 can also be one; it can also be two, arranged along the central axis direction of the rotation axis 11. The strap 300 needs to bypass at least one of the second steering wheels 134 and then extend to the pressure wheel group 132. By providing the second steering wheel 134, the strap 300 can be smoothly and accurately conveyed onto the pressure wheel group 132 after entering the turntable 12, thereby improving the smoothness and stability of the conveyance of the strap 300.

[0024] As Figure 3 shown, a through groove 111 is provided on the outer side wall of the rotation axis 11 along the central axis direction. The through groove 111 extends from the outer side surface of the rotation axis 11 to the end surface near one end of the pressure wheel group 132. The through groove 111 is open on the outside of the rotation axis 11 to facilitate threading the strap 300 onto the pressure wheel group 132 before work. The notch of the through groove 111 after passing through the rotation axis 11 is located between the second steering wheel 134 and the center of the rotation axis 11, that is, the distance from the notch of the through groove 111 to the center of the rotation axis 11 is less than the distance from the second steering wheel 134 to the rotation axis 11, so that the strap 300 can conveniently bypass the second steering wheel 134 after passing through the through groove 111. By providing the through groove 111, the strap 300 can be conveyed forward while following the rotation of the rotation axis 11, and the air resistance of the strap 300 in the through groove 111 is smaller and the conveyance is more stable. In addition, the traction mechanism 1 further includes a guide wheel 16 pivotally connected to one end of the rotation axis 11 away from the pressure wheel group 132 to guide the strap 300 from the outside into the through groove 111. The pivot axis of the guide wheel 16 is perpendicular to the central axis of the rotation axis 11. Through the guiding of the guide wheel 16, the strap 300 can accurately and stably enter the rotation axis 11, improving the smoothness of operation.

[0025] Please refer to Figure 2 and Figure 3, the traction assembly 13 further includes a driving wheel 136 and a driven wheel 137. The driving wheel 136 is coaxially and rotatably sleeved on one end of the rotating shaft 11. The number of the driven wheels 137 is two, and each of the driven wheels 137 is coaxially fixed to one of the pressing wheels 132a of the two pressing wheel sets 132. The driving wheel 136 is in rolling contact with the two driven wheels 137 at the same time. The first driving mechanism 14 can drive the driving wheel 136 to rotate, so as to drive the two driven wheels 137, and further make the pressing wheel 132a rotate. By providing the driving wheel 136 and the driven wheel 137 and making the driving wheel 136 in rolling contact with the two driven wheels 137, the first driving mechanism 14 can be used to drive the driving wheel 136 to rotate, so as to achieve the purpose of driving the two pressing wheel sets 132 to rotate at the same time, and further realize the effect of double traction of the strap 300, and improve the stability of the conveyance of the strap 300. In this embodiment, the driving wheel 136 and the driven wheel 137 can be rubber wheels or gears, and any wheel set that can achieve the transmission of driving force is applicable here.

[0026] As Figure 2 and Figure 3 shown, the first driving mechanism 14 includes a first servo motor 141, a first driving pulley 142, a first driven pulley 143 and a first timing belt 144. The first servo motor 141 can be arranged on the base 17. The first driving pulley 142 is arranged at the output end of the first servo motor 141. The first driven pulley 143 is coaxially and rotatably sleeved on the rotating shaft 11 through a bearing. The first driven pulley 143 is coaxially fixed to the driving wheel 136. The first timing belt 144 is wound between the first driving pulley 142 and the first driven pulley 143. By coaxially and rotatably sleeving the first driven pulley 143 on the rotating shaft 11 and coaxially fixing it to the driving wheel 136, and then using the first driving pulley 142 and the first timing belt 144 to drive the first driven pulley 143 to rotate, the pressing wheel set 132 can be driven to rotate around its own axis while not affecting the revolution of the pressing wheel set 132 around the central axis of the turntable 12, so as to realize the traction of the strap 300, and its structure is simple and the control is very convenient.

[0027] Again, as Figure 2 and Figure 3As shown, the second driving mechanism 15 includes a second servo motor 151, a second driving pulley 152, a second driven pulley 153, and a second synchronous belt 154. The second servo motor 151 can be arranged on the base 17. The second driving pulley 152 is arranged at the output end of the second servo motor 151. The second driven pulley 153 is coaxially fixed on the rotating shaft 11. The second synchronous belt 154 is wound between the second driving pulley 152 and the second driven pulley 153.

[0028] Combining the above and Figure 3 and Figure 4 , the working principle of the wrapping mechanism 100 of the present invention will be described in detail as follows:

[0029] First, the guide pulley 16, the second driven pulley 153, the base 17, the first driven pulley 143, the driving wheel 136, and the turntable 12 are sequentially arranged on the rotating shaft 11 along the conveying direction of the wrapping tape 300. At the beginning, threading and guiding of the core wire 200 and the wrapping tape 300 are required. Specifically, the core wire 200 is threaded through the central rod 2, and the core wire 200 extends through the turntable 12. The conveying direction of the core wire 200 is from one end close to the guide pulley 16 to one end close to the turntable 12. Of course, the conveying direction of the core wire 200 can also be from one end close to the turntable 12 to one end close to the guide pulley 16. The wrapping tape 300 first bypasses the guide pulley 16 and then enters the through groove 111. After that, the wrapping tape 300 passes through the through groove 111 and exits from the outside of the turntable 12. Then the wrapping tape 300 bypasses one of the second turning pulleys 134 and passes between the two pressing wheels 132a of the pressing wheel group 132 on this side. After that, the wrapping tape 300 extends to the pressing wheel group 132 on the other side after bypassing the pressing wheel 132a and passes between the two pressing wheels 132a of the pressing wheel group 132 on this side. Finally, the wrapping tape 300 wraps around the core wire 200 after bypassing the two first turning pulleys 131.

[0030] During operation, the core wire 200 is continuously output forward under the traction of an external device. At the same time, the first servo motor 141 and the second servo motor 151 are started. The first servo motor drives the first driving pulley 142. The first driving pulley 142 drives the first driven pulley 143 and the driving wheel 136 through the first synchronous belt 144. The driving wheel 136 drives the driven wheel 137, and the driven wheel 137 drives the pressing wheel 132a connected thereto. At this time, the two pressing wheel sets 132 rotate simultaneously, thereby providing a double traction force to drive the wrapping tape 300 to be conveyed forward. At the same time, the second servo motor 151 drives the second driving pulley 152. The second driving pulley 152 drives the rotating shaft 11 through the second synchronous belt 154 and the second driven pulley 153, and the rotating shaft 11 drives the turntable 12 to rotate. At this time, the pressing wheel 132a of the pressing wheel set 132 rotates around its own central axis and revolves around the central axis of the rotating shaft 11, so that the wrapping tape 300 continuously wraps around the core wire 200 while being continuously output.

[0031] Compared with the prior art, in the present invention, two pressing wheel sets 132 are arranged on the turntable 12, and the two pressing wheel sets 132 are symmetrically arranged. Further, a first turning wheel 131 is arranged on the turntable 12, and the distance from the first turning wheel 131 to the center of the turntable 12 is smaller than the distance from the pressing wheel set 132 to the center of the turntable 12. Therefore, the two pressing wheel sets 132 and the first turning wheel 131 are substantially in the same radial plane. When the wrapping tape 300 bypasses the two pressing wheel sets 132 and the first turning wheel 131 to wrap the core wire 200, the axial distance from the rotating shaft 11 where the wrapping tape 300 is led out to the core wire 200 being wrapped is very short. Thus, the traction length of the wrapping tape 300 in the axial direction is very small. When rotating at a high speed, the wind resistance becomes extremely small, thereby effectively reducing the vibration of the wrapping tape 300, greatly reducing the noise, and effectively improving the rotation stability, enabling a higher-speed rotation, and thus improving the working efficiency. In addition, since two pressing wheel sets 132 are used to convey the wrapping tape, the front pressing wheel set 132 can directly traction the wrapping tape, and the front pressing wheel set 132 can isolate the wrapping tape in front, thereby preventing the change in the speed or the amount of the wrapping tape released from affecting the wrapping tape 300 to be wrapped around the core wire 200 later. Therefore, the two pressing wheel sets 132 can completely shield the influencing factors other than the two pressing wheel sets 132, so that the wrapping tape 300 can be stably output, ensuring the stability of the wrapping tape.

[0032] The structures of the external devices for conveying the core wire 200 involved in the double-traction mechanism 1 of the pressing wheels on the rotating shaft 11 of the present invention are well-known to those of ordinary skill in the art and will not be described in detail herein.

[0033] In addition, the double traction mechanism 1 of the pressing wheel of the present invention is not limited to conveying the belt 300. It is also applicable to conveying the core wire 200. It only needs to adjust the outer shapes of the pressing wheel set 132, the first turning wheel 131, the second turning wheel 134, etc., so that they are suitable for cooperating with the core wire 200. It is not limited to only one material of the belt 300. Any other continuous strip material similar to the belt 300 is within the protection scope of this application.

[0034] The above-disclosed are only the preferred examples of the present invention. Of course, the scope of rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A double traction mechanism of a pressing wheel on a rotating shaft, characterized in that: It includes a rotating shaft, a turntable, a traction assembly, a first driving mechanism and a second driving mechanism. The rotating shaft is rotatably arranged. The traction assembly includes a first steering wheel and a set of pressing wheels pivotally connected to one side of the turntable in central symmetry. Each set of pressing wheels has two pressing wheels that press against each other and can roll in contact, and the rotating shaft of the pressing wheel is parallel to the rotating shaft. The turntable is coaxially fixed to one end of the rotating shaft. The first steering wheel is arranged on the turntable, and the distance from the first steering wheel to the center of the turntable is less than the distance from the set of pressing wheels to the center of the turntable. The first driving mechanism drives the set of pressing wheels to rotate so that the set of pressing wheels traction the strap. The second driving mechanism drives the rotating shaft to rotate to drive the strap to rotate.

2. The pressing wheel double traction mechanism on the rotating shaft according to claim 1, characterized in that: The traction assembly further includes a driving wheel and a driven wheel. The driving wheel is coaxially and rotatably sleeved on one end of the rotating shaft. The driven wheel is coaxially fixed to one of the pressing wheels of each set of pressing wheels respectively. The driving wheel is in rolling contact with the driven wheel, and the first driving mechanism can drive the driving wheel to rotate.

3. The double traction mechanism of the pressing wheel on the rotating shaft according to claim 2, characterized in that: The first driving mechanism includes a first servo motor, a first driving pulley, a first driven pulley and a first synchronous belt. The first driving pulley is arranged at the output end of the first servo motor. The first driven pulley is coaxially and rotatably sleeved on the rotating shaft. The first driven pulley is coaxially fixed to the driving wheel. The first synchronous belt is wound between the first driving pulley and the first driven pulley.

4. The double traction mechanism of the pressing wheel on the rotating shaft according to claim 1, characterized in that: A through groove is provided on the outer side wall of the rotating shaft along the central axis direction. The through groove extends from the outer side surface of the rotating shaft to the end surface near one end of the set of pressing wheels.

5. The double traction mechanism of the pressing wheel on the rotating shaft according to claim 4, characterized in that: The traction mechanism further includes a guiding wheel. The guiding wheel is arranged at one end of the rotating shaft away from the set of pressing wheels to guide the strap into the through groove.

6. The double traction mechanism of the pressing wheel on the rotating shaft according to claim 1, characterized in that: The second driving mechanism includes a second servo motor, a second driving pulley, a second driven pulley and a second synchronous belt. The second driving pulley is arranged at the output end of the second servo motor. The second driven pulley is coaxially fixed to the rotating shaft. The second synchronous belt is wound between the second driving pulley and the second driven pulley.

7. The double-traction mechanism of the pressure wheel on the rotating shaft according to claim 1, characterized in that: The traction assembly further includes a second steering wheel. The second steering wheel is arranged on the turntable to guide the strap to the set of pressing wheels. The distance from the second steering wheel to the center of the turntable is less than the distance from the set of pressing wheels to the center of the turntable.

8. The double traction mechanism of the pressing wheel on the rotating shaft according to claim 1, characterized in that: A first bracket is provided on the turntable. The first bracket is fixed on the turntable, and the first steering wheel is pivotally connected to the first bracket.

9. The double-traction mechanism of the pressure wheel on the rotating shaft according to claim 7, characterized in that: A second bracket is provided on the turntable. The second bracket is fixed on the turntable, and the second steering wheel is pivotally connected to the second bracket.

10. A wrapping mechanism, characterized in that: It includes a central rod and the double-pressing-wheel traction mechanism according to any one of claims 1 to 9. The central rod can allow the core wire to pass through from the inside. The rotating shaft is coaxially and rotatably sleeved outside the central rod to drive the strap to rotate and wrap around the core wire.

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