CN114314198A - Variable-speed yarn withdrawing device and application method thereof - Google Patents
Variable-speed yarn withdrawing device and application method thereof Download PDFInfo
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- CN114314198A CN114314198A CN202111620975.0A CN202111620975A CN114314198A CN 114314198 A CN114314198 A CN 114314198A CN 202111620975 A CN202111620975 A CN 202111620975A CN 114314198 A CN114314198 A CN 114314198A
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Abstract
The application discloses know yarn position detection device and working method thereof and yarn system and control method thereof that solve yarn position detection device, wherein solve yarn position detection device, be suitable for the change that detects the yarn position that separates in the optical cable is separated the yarn process, characterized in that, it includes a mounting, a conversion component and a detection component to solve yarn position detection device. The conversion member is movably disposed at the fixing member, and continuously interferes with the yarn drawn from the optical cable, so that the conversion member moves on the fixing member when the angle of the yarn is changed. The detecting member is provided to detect a moving amount of the converting member.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to a yarn unwinding point position detection device, a working method thereof, a yarn unwinding system and a control method thereof.
Background
Generally, a common cable such as an optical cable is generally twisted by a plurality of optical cable cores, after the twisting of the plurality of optical cable cores is completed, yarn binding treatment is performed on the optical cable cores through yarns, and the optical cable after the yarn binding treatment is convenient for other processing flows. Such as adding a barrier layer or adding an armor layer to better enhance the strength of the cable itself.
The existing optical cable core can carry out preliminary detection on a plurality of optical cable cores after being wound by yarns, and each optical cable core is guaranteed to meet the standard. When an unqualified optical cable core is detected, the yarn outside the optical cable needs to be removed, the optical cable core with the problem inside the optical cable core is taken out and replaced, and then the optical cable is bundled. The existing yarn withdrawing step is processed by a yarn withdrawing device, and the specific operation step is that the optical cable core is dragged by a winding frame to move, and when the optical cable moves, the optical cable is also withdrawn by a yarn withdrawing rotating mechanism in the yarn withdrawing device.
When the optical cable is processed by the yarn withdrawal, the yarn withdrawal rotating mechanism draws the yarn wound on the optical cable to rotate. Because the optical cable is also dragged and moved when being drawn back, the speed of drawing back the optical cable is equal to the speed of moving the optical cable, and the yarn-releasing twisting point on the optical cable is kept in a dynamic balance range. However, when the moving speed of the optical cable is different from the yarn withdrawing speed, the position of the yarn releasing twisting point of the optical cable is easy to change. If the positions of the yarn unwinding twisting point and the yarn unwinding rotating mechanism are too far, the yarn unwinding rotating mechanism cannot normally drive the yarn to rotate, the yarn is difficult to wind out of the optical cable, and if the positions of the yarn unwinding twisting point and the yarn unwinding rotating mechanism are too close, the yarn is easily wound on the yarn unwinding rotating mechanism, the normal yarn unwinding of the optical cable is influenced, and therefore the problem is brought to the production of the optical cable.
Disclosure of Invention
An advantage of the present invention is to provide a yarn unwinding position detecting device in which a conversion member converts a change in the angle of the yarn into a moving amount of a moving member, thereby reflecting a change in the position of a yarn unwinding twist point.
Another advantage of the present invention is to provide a yarn unwinding position detecting device in which cooperation of a slope block and a distance sensor can stably reflect a change in position of a yarn unwinding twist point.
Another advantage of the present invention is to provide an operating method of a yarn unwinding position detecting device, which can detect a change in the angle of a feedback yarn by a converting member and convert the change in the angle of the yarn into a movement amount that the detecting member can easily detect, thereby knowing the change in the yarn unwinding position.
Another advantage of the present invention is to provide a yarn unwinding system in which the detecting member is capable of correspondingly varying the yarn unwinding rate of the yarn unwinding assembly according to the change of the position of the yarn unwinding point. To achieve at least one of the above advantages, the present invention provides a yarn unwinding position detecting apparatus adapted to detect a change in a position of a yarn unwinding position in a process of unwinding an optical cable, the apparatus including:
a fixed member;
a conversion member movably disposed at the holder, the conversion member continuously abutting against the yarn drawn from the optical cable so as to move on the holder when the yarn angle is changed; and
a detecting member configured to detect a moving amount of the converting member.
According to an embodiment of the present invention, the conversion component includes a moving part and an elastic part, the elastic part is disposed on the fixed part, the moving part is horizontally slidably disposed on the fixed part, one side of the moving part abuts against the elastic part, the other side of the moving part abuts against the yarn, the moving part is provided with a through hole, and the moving part is sleeved outside the optical cable through the through hole.
According to an embodiment of the present invention, the switching member includes a switching element, the switching element is disposed on the moving element, the switching element has a detected surface, and the detecting member is disposed to detect a distance from the switching element to the detecting member, so that when the moving element moves, the detecting member detects a change in the distance between the switching element and the detecting member.
According to an embodiment of the present invention, the fixing member includes a fixing plate and at least one guiding rod, the guiding rod is disposed on the fixing plate, and the moving member is slidably sleeved on the guiding rod.
According to an embodiment of the present invention, the moving member is provided with a bearing, and the moving member is slidably fitted over the guide rod through the bearing.
To achieve at least one of the above advantages, the present invention provides a working method of a yarn position detecting device, including the steps of:
s1, feeding back the change of the yarn angle through the moving element, and converting the change of the yarn angle into the moving amount of the moving element;
and S2, detecting the moving amount of the moving element by the detection component, thereby knowing the change of the yarn-releasing position.
To achieve at least one of the above advantages, the present invention provides a yarn unwinding system adapted to a variable speed yarn unwinding optical cable, characterized in that the yarn unwinding system comprises:
the traction component is used for driving the optical cable to move;
the yarn withdrawing assembly is used for withdrawing yarns of the optical cable in a traction process; and
a yarn position detecting device that decodes, the yarn position detecting device includes:
a fixed member;
a transition member movably disposed at the holder, the transition member continuously abutting against the yarn withdrawn from the optical cable; and
a detecting member disposed to detect a movement amount of the switching member, the detecting member being communicatively connected to the yarn withdrawing assembly to adjust a yarn withdrawing rate of the yarn withdrawing assembly accordingly when the detecting member detects a change in the movement amount of the switching member.
According to an embodiment of the invention, the yarn withdrawal assembly comprises a rotating unit and a yarn withdrawal rotating frame, the yarn withdrawal rotating frame is coaxially held on the optical cable, and the rotating unit is in transmission connection with the yarn withdrawal rotating frame.
According to an embodiment of the invention, the rotation unit is implemented as a servo motor.
To achieve at least one of the above advantages, the present invention provides a method for controlling a yarn unwinding system, comprising the steps of:
providing a pulling assembly, a yarn withdrawing assembly, a fixing piece, a conversion member and a detection member, wherein the pulling assembly is used for pulling the optical cable, the yarn withdrawing assembly is used for withdrawing the pulled optical cable, the conversion member is used for converting the angle change of the yarn withdrawn from the optical cable into the movement amount, and the detection member is used for detecting the movement amount of the conversion member;
increasing the yarn withdrawal rate of the yarn withdrawal assembly when the detection means detects that the distance from the detection means to the conversion means is reduced; and
when the detecting component detects that the distance from the detecting component to the converting component is increased, the yarn withdrawing speed of the yarn withdrawing assembly is reduced.
Drawings
Fig. 1 shows a schematic construction of a variable-speed yarn take-off device according to the invention.
Fig. 2 shows a schematic structural view of the movement of the moving part in the variable speed yarn take-off device according to the present invention.
FIG. 3 shows a perspective view of a detection assembly in the variable speed take-off device of the present invention.
FIG. 4 shows a top view of a detection assembly in the variable speed take-off device of the present invention.
Fig. 5 shows a system connection diagram of the variable speed yarn take-off device according to the invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1 to 5, a yarn unwinding position detecting apparatus according to a preferred embodiment of the present invention is adapted to detect a change in a position of a yarn unwinding position during a yarn unwinding process of an optical cable, which will be described in detail below.
The yarn-unwinding position detecting device 30 includes a fixing member 31, a switching member 32, and a detecting member 33.
The transition member 32 is movably disposed on the fixing member 31, and the transition member 32 continuously collides against the yarn drawn from the optical cable. The detecting member 33 is provided to detect the amount of movement of the converting member 32. Since the yarn is opened from the yarn releasing twist point and separated from the optical cable, when the position of the yarn releasing twist point is changed, the angle of the yarn wound from the optical cable is changed, and since the converting member 32 is in contact with the yarn, the yarn moves the converting member 32, and the converting member 32 can convert the displacement of the yarn releasing twist point into the displacement. The detecting member 33 is provided to detect the amount of movement of the switching member, so that when the switching member 32 moves, the detecting member 33 can detect the amount of movement of the switching member 32 and know the change in the position of the yarn unwinding twist point.
The switching member 32 includes a moving member 321 and an elastic member 322. The elastic member 322 is provided to the fixing member 31. The moving member 321 is horizontally slidably disposed on the fixed member 31 and abuts against the elastic member 322. The moving member 321 is provided with a through hole 3201, the moving member 321 is sleeved outside the optical cable through the through hole 3201, and the moving member 321 is located between the yarn unwinding twisting point and the yarn unwinding rotating frame 22. When the optical cable is subjected to a yarn unwinding process, a yarn wound from the optical cable contacts with the inner wall of the through hole 3201, and if the position of the yarn unwinding twisting point is changed, the angle of the yarn separated from the yarn unwinding twisting point is also correspondingly changed, so that the moving member 321 can be pushed to move in the horizontal direction. The detecting member 33 is provided to detect the moving amount of the mover 321. Therefore, when the detecting member 33 detects the movement of the moving member 321, it can be known that the position of the yarn unwinding twist point is changed.
The switching member 32 further comprises a switching piece 323. The conversion element 323 is disposed on the moving element 321, the conversion element 323 has a detected surface 3202, and when the conversion element 323 moves, the distance from the conversion element 323 to the detecting element 33 changes. The detecting member 33 is provided to detect the distance of the converting element 323 to the detecting member 33. When the detecting member 33 detects that the distance between the converting element 323 and the detecting member 33 changes, the detecting member 33 can know that the moving element 321 changes, detect the moving amount of the moving element 321 by detecting the distance, and finally know the change of the position of the yarn unwinding twisting point.
The conversion member 323 is implemented as a slope block, and the slope of the slope block is the detected surface 3202. The detection means 33 is implemented as a distance sensor. The inclined plane of the inclined plane block faces the distance sensor, and the distance sensor is arranged to detect the distance between the inclined plane block and the distance sensor. When the inclined plane block moves, the distance between the inclined plane and the distance sensor changes. Specifically, when the speed of the optical cable pulled by the pulling assembly 10 changes, the yarn unwinding twisting point on the optical cable changes, the yarn wound out of the optical cable correspondingly drives the moving member 321 to change in position, and correspondingly, the distance sensor detects that the distance from the slope block to the distance sensor changes, so that the position of the yarn unwinding twisting point is known to change.
It should be noted that, since the moving element 321 is pushed by the yarn, the moving element 321 will be pushed to be away from the yarn, the elastic element 322 is disposed on the converting member 31, and when the moving element 321 is pushed, the elastic element 322 is in a compressed state, and can continuously push the moving element 321 to be attached to the yarn, so as to ensure that the moving element 321 can stably respond to the change of the position of the yarn unwinding twisting point. The elastic member 322 functions to make the moving member 321 continuously fit the yarn, and also to reposition the moving member 321 after moving. The fixing member 31 includes a fixing plate 311 and at least one guide rod 312. The guide rod 312 is disposed on the fixed plate 311, the moving member 321 is slidably sleeved on the guide rod 312, and the horizontal movement of the moving member 321 is ensured by guiding the sliding of the moving member 321 by the guide rod 312.
The moving member 321 is provided with a bearing. The moving member 321 is slidably connected to the guide rod 312 through a bearing, and the friction force generated when the moving member 321 contacts the guide rod 312 can be ensured by the bearing, so that the yarn can stably push the guide rod 312 to move.
Preferably, the elastic member 322 is implemented as a spring, and the spring is sleeved in the guide rod 312 to fix the spring, so that the moving member 321 is continuously attached to the yarn by the elasticity of the spring, and the moving member 312 can be normally reset after moving.
The moving member 321 is implemented as a sliding seat, a connecting rod and a ring. The sliding seat is slidably connected to the guide rod 312, and the sliding seat abuts against the spring, and can freely slide outside the guide rod 312, and a bearing is arranged on the sliding seat, and the sliding seat has a small resistance with the guide rod 312. Therefore, when the sliding seat is subjected to a small force, the sliding seat slides on the guide rod 312. One end of the connecting rod is arranged on the sliding seat, the other end of the connecting rod is used for installing the circular ring, the through hole 3201 is formed in the circular ring, and the circular ring is sleeved outside the optical cable. The sliding seat is contacted with the yarn wound from the optical cable through the circular ring, and the movement amount of the yarn is converted into the movement amount of the sliding seat. Specifically, when the angle of the yarn changes, the yarn pushes the circular ring to move. The yarns leave the optical cable from the yarn releasing twisting point and are connected to the yarn withdrawing rotating frame 22, when the yarn releasing twisting point is far away from the yarn withdrawing rotating frame 22, the inclined angle of the yarns is correspondingly changed, the yarns are also deviated towards the direction far away from the yarn withdrawing rotating frame 22, the circular ring can be pushed to move, and correspondingly, the sliding seat is driven by the circular ring to move, so that the change of the position of the yarn releasing twisting point is converted into the movement amount of the sliding seat.
When the yarn unwinding twisting point is close to the yarn unwinding rotating frame 22, the yarn is close to the yarn unwinding rotating frame 22, correspondingly, the yarn is far away from the circular ring, and the sliding seat is abutted to the spring, so that when the yarn is far away from the circular ring, the circular ring is pushed by the spring, and the circular ring is always abutted to the yarn. Therefore, when the yarn moves, the engagement of the conversion member 32 can convert the angle change amount of the yarn into the movement amount of the slide holder, and stably reflect the change in the position of the yarn unwinding twist point.
In a modified embodiment of the present invention, the fixed member 31 is provided with a sliding slot, and the moving member 321 is provided with a sliding block slidably connected to the inside of the sliding slot. The moving member 321 horizontally slides on the fixing member 31 in a sliding block and sliding groove manner. Correspondingly, the elastic element 322 is disposed inside the sliding chute and can also push the moving element 321 to approach the yarn.
The working method of the yarn-solving point position detection device comprises the following steps:
s1, feeding back the change of the yarn angle through the moving member 321, and converting the change of the yarn angle into the moving amount of the moving member 321;
s2, the detecting means 33 detects the moving amount of the runner 321 to know the change of the yarn unwinding position.
Specifically, the moving member 321 is always attached to the yarn, and when the angle of the yarn is increased, the moving member 321 is pushed by the yarn, so that the position of the moving member 321 is changed; if the angle of the yarn is smaller, the moving member 321 is always overlapped on the yarn, the moving member 321 is close to the yarn, and the position of the moving member 321 is changed, so that the change of the angle of the yarn can be reflected, and the change of the position of the yarn unwinding twisting point is finally reflected.
A yarn unwinding system adapted to a variable speed yarn unwinding optical cable, the yarn unwinding system comprising: a traction component 10, a yarn withdrawing component 20 and a yarn position detecting device 30.
The pulling assembly 10 is used to move the optical cable.
The yarn withdrawal assembly 20 is used for withdrawing yarn from the optical cable during pulling.
The yarn position detecting device comprises:
a fixing member 31, a converting member 32 and a detecting member 33. The transition member 32 is movably disposed on the fixing member 31, and the transition member 32 continuously collides against the yarn drawn from the optical cable. The detecting member 33 is arranged to detect the amount of movement of the switching member 32, and the detecting member 33 is also in communication with the yarn withdrawal assembly 20, enabling the yarn withdrawal rate of the yarn withdrawal assembly 20 to be correspondingly changed. Since the yarn is opened from the yarn releasing twisting point and separated from the optical cable, when the position of the yarn releasing twisting point is changed, the angle of the yarn wound from the optical cable is changed, the conversion member 32 is contacted with the yarn, the yarn can move the conversion member 32, the conversion member 32 can convert the displacement of the yarn releasing twisting point into a displacement amount, the displacement amount is detected by the detection member 33, the detection member 33 knows the change of the position of the yarn releasing twisting point, and finally the detection member 33 correspondingly changes the yarn withdrawing rate of the yarn withdrawing assembly 20 to the optical cable according to the detected position change so as to ensure that the yarn releasing twisting point is in dynamic balance.
The yarn withdrawal assembly 20 comprises a rotating unit 21 and a yarn withdrawal rotating frame 22. The yarn withdrawal rotating frame 22 is coaxially held on the optical cable, and the rotating unit 21 is in transmission connection with the yarn withdrawal rotating frame 22 and is used for driving the yarn withdrawal rotating frame 22 to rotate around the axial center line of the optical cable. The yarn take-off rotating frame 22 has two guides for pulling the yarn to unwind from the cable. Therefore, when the yarn withdrawal rotating frame 22 is driven to rotate by the rotating unit 21, the guide portion correspondingly rotates to unwind the yarn wound around the optical fiber cable, and the yarn withdrawal process is performed on the optical fiber cable.
The rotation unit 21 is implemented as a servo motor. When the detecting member 33 detects the moving amount of the moving member 321, the detecting member 33 correspondingly changes the servo motor, and the servo motor can change speed accurately, so as to ensure that the yarn withdrawal rotating frame 22 rotates accurately.
The detecting component 33 can detect the movement amount of the bevel block, correspondingly change the rotating speed of the rotating unit 21 according to the distance detected by the distance sensor, and accelerate the rotating speed of the rotating unit 21, so that the pulled speed of the optical cable is matched with the yarn releasing speed of the optical cable, and the yarn releasing twisting point is ensured to be stabilized in the allowable range of equipment. The inclined plane of the inclined plane block can linearly reflect the offset of the yarn unwinding twisting point, so that the distance sensor can measure the offset conveniently, and correspondingly, the distance sensor can adjust the rotating speed of the rotating unit 21 conveniently. As shown in fig. 1-3, when the yarn removing twisting point is close to the yarn withdrawing rotating frame 22, the distance sensor detects that the distance from the inclined plane block to the distance sensor is too far, and the distance sensor sends an electric signal for reducing the rotation speed to the rotating unit 21, so as to reduce the rotation speed of the yarn withdrawing rotating frame 22, thereby maintaining the yarn removing twisting point at the original position.
The control method of the yarn unwinding system is characterized by comprising the following steps of:
providing a pulling assembly 10, a yarn withdrawing assembly 20, a fixing member 31, a converting member 32 and a detecting member 33, wherein the pulling assembly 10 is used for pulling the optical cable, the yarn withdrawing assembly 20 is used for withdrawing the pulled optical cable, the converting member 32 is used for converting the angle change of the yarn withdrawn from the optical cable into the movement amount, and the detecting member 33 is used for detecting the movement amount of the converting member 32;
increasing the yarn withdrawal rate of the yarn withdrawal assembly 20 when the detection means 33 detects that the distance from the detection means 33 to the switch means 32 is reduced; and
when the detecting member 32 detects that the distance from the detecting member 33 to the switching member 32 becomes larger, the yarn withdrawing rate of the yarn withdrawing assembly 20 is reduced. The pulling assembly 10 pulls the optical cable to move horizontally, and the yarn take-off rotary frame 22 is driven by the rotating unit 21 to take off the yarn wound on the optical cable while the optical cable is being moved. When the speed of the pulling component 10 pulling the optical cable is too fast, the yarn releasing speed of the yarn releasing rotating frame 22 is in a fixed state, so that a position change of a yarn releasing twisting point on the optical cable occurs, and the detecting component 30 can correspondingly adjust the rotating speed of the rotating unit 21 according to the change of the yarn releasing twisting point, so as to change the yarn releasing speed of the yarn releasing rotating frame 22 on the optical cable, so that the yarn releasing speed of the yarn releasing rotating frame 22 and the speed of the pulling component 10 pulling the optical cable are in a dynamic balance, and the position of the yarn releasing twisting point can be stabilized in an allowable range of equipment.
Since the optical cable is pulled and simultaneously is removed by the yarn removing assembly 20. The problem is that the speed of the cable being pulled may vary during the pulling of the cable, resulting in the speed of the cable being untwisted not being as fast as the cable is running, resulting in the yarn being twisted. Moreover, the number of yarn loops wound on the optical cable is unstable, so that the yarn unwinding speed of the optical cable is too high, the yarn is easily wound on the optical cable, and yarn unwinding is affected. The invention can detect the position change of the yarn removing twisting point and change the speed of the yarn withdrawing assembly 20, so that the pulled speed of the optical cable is equal to the yarn removing speed of the optical cable, thereby ensuring that the yarn removing twisting point on the optical cable is in dynamic balance.
Preferably, the step S2 can also be replaced by correspondingly adjusting the speed of the drawing component 10 for drawing the optical cable according to the position change detected by the detection component 30. And (3) adapting the speed of the optical cable to be pulled and the speed of the optical cable to be drawn back by changing the speed of the optical cable to be pulled so as to maintain the yarn unwinding twisting point within the range allowed by equipment. In particular, the detection assembly 30 is communicatively coupled to the drive unit. When the detection component 30 detects that the yarn unwinding twisting point is close to the yarn unwinding rotating frame 22, the detection component 30 sends a speed reduction signal to the driving unit to reduce the speed of the traction component 10 for pulling the optical cable, so as to prevent the yarn unwinding twisting point from being too close to the yarn unwinding rotating frame 22. Similarly, when the detection component 30 detects that the yarn releasing twisting point is far away from the yarn withdrawing rotating frame 22, the detection component 30 sends an acceleration signal to the driving unit to accelerate the speed of the traction component 10 for pulling the optical cable, so as to prevent the yarn releasing twisting point from being far away from the yarn withdrawing rotating frame 22, and thus, the yarn releasing twisting point is ensured to be within a reasonable range.
The moving member 321 in the detecting assembly 30 correspondingly moves according to the change of the yarn angle, so as to reflect the change of the position of the yarn unwinding twisting point on the optical cable. When the dynamic equilibrium position of the untwisting twist point is changed, the angle of the yarn wound from the optical cable is also changed. The change of the position of the yarn-releasing twisting point can be directly reflected by adopting the yarn, and the change of the position of the yarn-releasing twisting point can be stably detected.
The detecting unit 30 detects the moving amount of the moving member 321 to feed back the change of the position of the yarn unwinding twist point. Specifically, the inclined plane block is arranged on the moving member 321, the probe of the distance sensor is over against the inclined plane of the inclined plane block, when the moving member 321 moves, the distance from the inclined plane block to the distance sensor changes, and the distance sensor can know the change of the position of the yarn unwinding twisting point, so that the distance sensor correspondingly changes the rotating speed of the rotating unit 21 according to the moving distance of the inclined plane block, and the yarn unwinding twisting point is maintained in the allowable range of the equipment.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (10)
1. The yarn position detection device of solving is suitable for the change that detects the optical cable and is solved yarn position in-process and solve yarn position, its characterized in that, it includes to solve yarn position detection device:
a fixed member;
a conversion member movably disposed at the holder, the conversion member continuously abutting against the yarn drawn from the optical cable so as to move on the holder when the yarn angle is changed; and
a detecting member configured to detect a moving amount of the converting member.
2. The yarn unwinding position detecting device as claimed in claim 1, wherein the converting member includes a moving member and an elastic member, the elastic member is disposed on the fixed member, the moving member is horizontally slidably disposed on the fixed member, one side of the moving member abuts against the elastic member, the other side of the moving member abuts against the yarn, the moving member is provided with a through hole, and the moving member is sleeved outside the optical cable through the through hole.
3. The yarn unwinding position detecting device according to claim 2, wherein the switching member includes a switching member provided to the moving member, the switching member having a detected surface, and the detecting member is provided to detect a distance from the switching member to the detecting member, so that the detecting member detects a change in the distance between the switching member and the detecting member when the moving member moves.
4. The yarn unwinding position detecting device according to claim 3, wherein the converting member is implemented as a slope block, a slope of the slope block is the detected surface, and the detecting member is implemented as a distance sensor configured to detect a distance from the slope block to the distance sensor.
5. The yarn unwinding position detecting device according to claim 3, wherein the fixing member includes a fixing plate and at least one guide rod, the guide rod is disposed on the fixing plate, and the moving member is slidably fitted on the guide rod.
6. The yarn unwinding position detecting device according to claim 5, wherein the moving member is provided with a bearing, and the moving member is slidably fitted over the guide rod through the bearing.
7. The working method of the yarn position detecting device is characterized by comprising the following steps of:
s1, feeding back the change of the yarn angle through the moving element, and converting the change of the yarn angle into the moving amount of the moving element;
and S2, detecting the moving amount of the moving element by the detection component, thereby knowing the change of the yarn-releasing position.
8. A yarn unwinding system adapted for a variable speed yarn unwinding optical cable, the yarn unwinding system comprising:
the traction component is used for driving the optical cable to move;
the yarn withdrawing assembly is used for withdrawing yarns of the optical cable in a traction process; and
a yarn position detecting device that decodes, the yarn position detecting device includes:
a fixed member;
a transition member movably disposed at the holder, the transition member continuously abutting against the yarn withdrawn from the optical cable; and
a detecting member disposed to detect a movement amount of the switching member, the detecting member being communicatively connected to the yarn withdrawing assembly to adjust a yarn withdrawing rate of the yarn withdrawing assembly accordingly when the detecting member detects a change in the movement amount of the switching member.
9. The system of claim 8, wherein the yarn withdrawal assembly includes a rotary unit and a yarn withdrawal turret, the yarn withdrawal turret being coaxially retained to the optical cable, the rotary unit being drivingly connected to the yarn withdrawal turret.
10. The control method of the yarn unwinding system is characterized by comprising the following steps of:
providing a pulling assembly, a yarn withdrawing assembly, a fixing piece, a conversion member and a detection member, wherein the pulling assembly is used for pulling the optical cable, the yarn withdrawing assembly is used for withdrawing the pulled optical cable, the conversion member is used for converting the angle change of the yarn withdrawn from the optical cable into the movement amount, and the detection member is used for detecting the movement amount of the conversion member;
increasing the yarn withdrawal rate of the yarn withdrawal assembly when the detection means detects that the distance from the detection means to the conversion means is reduced; and
when the detecting component detects that the distance from the detecting component to the converting component is increased, the yarn withdrawing speed of the yarn withdrawing assembly is reduced.
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