A ring spinning frame core yarn monitoring device

Abstract

The application discloses a core yarn monitoring device of a ring spinning frame, and belongs to the technical field of monitoring and controlling of core yarn in a core yarn spinning process.The core yarn monitoring device comprises a guide roller, the guide roller is hinged at one end of a swing lever, a connecting shaft is arranged at the other end of the swing lever, the swing lever is provided with a sensor, the core yarn is wrapped around one side of the guide roller and drives the guide roller to rotate, and a control module of the core yarn monitoring device acquires a rotation state signal of the guide roller measured by the sensor and determines the supply condition of the core yarn.The core yarn is wrapped around one side of the guide roller to drive the guide roller to rotate, the rotation state of the guide roller is utilized to determine the supply condition of the core yarn, real-time monitoring of the core yarn supply is realized, the core yarn supply speed is uneven or the core yarn is broken to give a prompt, and the prompt is fed back to the roving self-stop, the feeding is stopped, and then the uniform consistency of the core yarn is ensured, and the broken yarn phenomenon of the core yarn is effectively monitored.

Description

Technical Field

[0001] This invention belongs to the technical field of core yarn monitoring and control during the core-spun yarn spinning process, and particularly relates to a core yarn monitoring device for core-spun yarn on a ring spinning machine. Background Technology

[0002] In the existing technology, when ring spinning machines process core-spun yarn, the core-spun yarn used for processing is prone to breakage during the winding process, which is not easily detected. This results in the core-spun yarn not being wound properly, leading to material waste.

[0003] Among them, Chinese utility model patent CN202023333878.7 discloses a core yarn monitoring device for ring spinning machines. It can use a rod that is rotatably connected to the mounting part to make the rod come into contact with the core yarn under the action of the adapter. If the core yarn breaks, the rod can flip over so that patrolling staff can quickly find and deal with it, which greatly reduces the risk of project delays, reduces waste, and reduces the labor intensity of staff. At the same time, the stop bar set on the side wall of the mounting part can prevent the rod from flipping over too much and the breakage from being difficult for staff to find.

[0004] However, the patent can only monitor the core yarn when it breaks. It does not provide a solution for situations where the core yarn is supplied too fast or too slow. There is no solution in the prior art either. However, uneven core yarn supply speed can easily cause uneven spinning of core-spun yarn and affect the quality of core-spun yarn. Summary of the Invention

[0005] The objective of this invention is to achieve real-time monitoring and feedback control of the core yarn supply speed, thereby solving the technical problem of uneven core yarn supply causing uneven spinning of core-spun yarn and affecting the quality of core-spun yarn.

[0006] To achieve the above objectives, the present invention provides a device for monitoring the core yarn of core-spun yarn on a ring spinning machine.

[0007] The specific technical solution adopted in this invention is as follows:

[0008] A core yarn monitoring device for a ring spinning machine includes a guide wheel hinged to one end of a swing arm, the other end of which is provided with a connecting shaft and a sensor. The core yarn is wrapped around one side of the guide wheel and drives the guide wheel to rotate. The control module of the core yarn monitoring device acquires the rotation status signal of the guide wheel measured by the sensor and determines the supply status of the core yarn.

[0009] Furthermore, the rotation center of the guide wheel is provided with a through hole, and a bearing is fixed in the through hole. The inner ring of the bearing is engaged with the fixed shaft at the end of the swing arm.

[0010] Furthermore, a magnet is fixed to the side of the guide wheel. When the guide wheel drives the magnet to rotate, the magnet passes over the sensor, causing the sensor to generate a rotation signal of the guide wheel and send it to the control module of the core wire monitoring device.

[0011] Furthermore, the sensor is a reed switch.

[0012] Furthermore, the core yarn monitoring device is equipped with a control module, which is fixedly connected to the frame of the spinning machine. The control module obtains the rotation state of the guide wheel to determine the core yarn supply status.

[0013] Furthermore, the control module acquires the signal M generated when the guide wheel rotates, and records the time T taken for the guide wheel to rotate one revolution. It then forms a set M1 with the number of times the signal M acquired within a set time period F, and forms a set T1 with the time T taken for the guide wheel to rotate one revolution within the set time period F. It calculates the difference M2 between each value in set M1 and the standard value, and calculates the difference T2 between the values ​​in set T1 and the standard value. The rotation status of the guide wheel is determined by the magnitude and frequency of the difference M2 and the difference T1.

[0014] Furthermore, the control module determines whether the core wire has been unexpectedly stretched based on the rotation status of the guide wire wheel, and outputs a determination signal.

[0015] Furthermore, when determining the rotation status of the guide wheel using the magnitude and frequency of the difference M2 and the difference T1, the average value M3 of the difference M2 within the time period F is calculated, and the average value T3 of the difference T2 within the time period F is calculated. When the average value M3 deviates from the standard average value M4, or when the average value T3 deviates from the standard average value T4, the control module determines that the rotation of the guide wheel is abnormal.

[0016] Furthermore, an angle sensor for monitoring the swing of the swing arm is provided at the hinge point between the swing arm and the upper cover of the roving stop body. The control module is connected to the angle sensor and acquires the measured value of the angle sensor.

[0017] Furthermore, the measured value of the angle sensor is W. When the value of W is within the specified range, and when the average value M3 deviates from the standard average value M4, or when the average value T3 deviates from the standard average value T4, the control module determines that the guide wheel is faulty.

[0018] The positive effects of this invention are: by wrapping the core yarn around one side of the guide wheel to drive the guide wheel to rotate, the rotation status of the guide wheel is used to determine the core yarn supply status, thereby realizing real-time monitoring of the core yarn supply. If the core yarn supply speed is uneven or the core yarn breaks, a prompt is given and feedback is given to the roving to stop feeding, thereby ensuring the uniformity of the core-spun yarn and effectively monitoring the core yarn breakage phenomenon. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a core yarn monitoring device for a ring spinning machine according to the present invention;

[0020] Figure 2 This is a schematic diagram of the application scenario layout of the monitoring device for core-spun yarn core of a ring spinning machine according to the present invention;

[0021] Figure 3 yes Figure 2 Enlarged view at point M;

[0022] Figure 4 yes Figure 3 The figure shown is a three-dimensional structural schematic diagram of a core yarn monitoring device for a ring spinning machine according to the present invention.

[0023] Figure 5 yes Figure 4 The diagram shown is an exploded view of the core yarn monitoring device for core-spun yarn on a ring spinning machine according to the present invention.

[0024] Legend: 1—Frame, 2—Middle roller, 3—Rear roller, 4—Push plate, 5—Drive device, 501—Fixing hole, 502—Slot, 503—Wedge, 504—Top cover, 505—Hinge seat, 6—Core yarn cake, 601—Fixing roller, 7—Core yarn, 8—First hinge shaft, 9—Cyclist, 10—Front roller, 11—Yarn roller, 12—Core yarn monitoring device, 1201—Second hinge shaft, 1202—Swing rod, 1203—Guide wheel, 1204—Connecting column, 1205—Circuit board, 1206—Sensor, 1207—Indicator light, 1208—First magnet, 1209—Fixing plate, 1210—Bearing, 1211—Bearing retaining ring, 1212—Snap ring, 1213—Second magnet, 1214—Cover plate, 1215—Angle sensor, 13—Guide wheel. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] Example 1

[0030] like Figures 1 to 3 The diagram shown is a structural diagram of a core yarn monitoring device for a ring spinning machine according to an embodiment of the present invention. The device includes a core yarn monitoring device 12 comprising a guide wheel 1203, which is hinged to one end of a swing arm 1202. The other end of the swing arm 1202 is provided with a hinge shaft, which is hinged to the frame of the ring spinning machine. The swing arm is provided with a sensor 1206. Core yarn 7 is wrapped around one side of the guide wheel 1203, causing the guide wheel to rotate. The core yarn monitoring device determines the supply status of core yarn 7 by the rotation state of the guide wheel 1203.

[0031] In this embodiment of the invention, the core yarn 7 is wrapped around one side of the guide wheel 1203, which drives the guide wheel 1203 to rotate. The rotation status of the guide wheel 1203 is used to determine the supply status of the core yarn 7, thereby realizing real-time monitoring of the supply of the core yarn 7. This is used to control the spinning machine to correct the supply of the core yarn 7, thereby ensuring the uniformity of the core-spun yarn and effectively monitoring the breakage of the core yarn 7.

[0032] like Figure 2 and Figure 3 As shown, a core yarn cake 6 is placed on two fixed rollers 601 of the spinning machine. The two fixed rollers 601 can rotate. When the core yarn 7 is under tension, it can drive the core yarn cake 6 to rotate on the two fixed rollers 601, so that the core yarn 7 unfolds and is fed out from the core yarn cake 6. After being fed out from the core yarn cake 6, the core yarn 7 passes through the core yarn monitoring device 12 and enters the rocker arm 9. After being guided by the guide wheel 13, it enters the front roller 10. The core yarn monitoring device 12 includes a rocker arm 1202. The left end of the rocker arm 1202 passes through... The first hinge shaft 8 is hinged to the guide wheel 1203. The right end of the swing arm 1202 is hinged to the frame of the ring spinning machine through the first hinge shaft 1201. The core yarn 7 is wound around the outer circumference of the guide wheel 1203. After passing through the guide wheel 1203, the core yarn 7 enters the rocker arm 9. After being guided by the guide wheel 13, it enters the front roller 10 and merges with the roving to form core-spun yarn. The core-spun yarn then passes through the middle roller 2 and the front roller 10 in sequence. After exiting the front roller 10, it enters the yarn roller 11 for winding, and the finished core-spun yarn cake is produced.

[0033] The swing arm 1202 of the core wire monitoring device 12 has a cavity and a cover plate 1214, which is sealed by bolts through the connecting column 1204. A circuit board 1205 is fixed to the top of the cavity. A sensor 1206 and an indicator light 1207 are fixed to the circuit board 1205. The indicator light 1207 is exposed on the outside of the swing arm through the wall of the cavity. The first hinge shaft 8 is fixed to the side of the circuit board 1205. The outer circumference of the first hinge shaft 8 is provided with a fixing plate 1209, a bearing 1210 and a bearing retaining ring 1211 from left to right. The outer ring of the bearing 1210 is fixed with a guide wheel 1203. The retaining ring 1212 fixes the bearing retaining ring 1211 in the center hole of the guide wheel 1203. The fixing plate 1209 is snapped into the left side of the guide wheel 1203. The first magnet 1208 and the second magnet 1213 are symmetrically fixed on the fixing plate 1209.

[0034] In practical use:

[0035] The core wire 7 drives the guide wheel 1203 to rotate. Since the fixed plate 1209 is fixed together with the guide wheel 1203, the fixed plate 1209 also rotates with the guide wheel 1203. Since the first magnet 1208 and the second magnet 1213 are symmetrically fixed on the fixed plate 1209, when the guide wheel 1203 rotates one revolution, the sensor 1206 can detect and generate two monitoring signals, which come from the first magnet 1208 and the second magnet 1213 respectively.

[0036] When the core yarn 7 breaks, the guide wheel 1203 loses the winding drive of the core yarn 7 and thus loses the power to rotate and cannot rotate. At this time, the sensor 1206 cannot generate a monitoring signal, and it can be determined that the core yarn 7 has broken. At this time, the drive device fixed on the cradle through the fixing hole 501 drives the push plate 4 to slide, which drives the wedge 503 in the slot 502 to insert into the rear roller 3, so that the roving and core yarn 7 stop supplying at the same time, and an alarm message is issued through the control module, waiting for further processing.

[0037] When the air supply speed of the core yarn 7 is too slow, the sensor 1206 detects that the time interval between two monitoring signals becomes longer. If this time interval exceeds the allowable range specified by the system, it indicates that the supply of the core yarn 7 is too slow. Then, the control system of the spinning machine can be used to adjust the front roller 10, the middle roller 2, or the rear roller 3 to restore the air supply speed of the core yarn 7, thereby avoiding the phenomenon of uneven core yarn in the core-spun yarn.

[0038] When the air supply speed of the core yarn 7 is too fast, the sensor 1206 detects that the time interval between two monitoring signals becomes shorter. If this time interval exceeds the allowable range specified by the system, it indicates that the supply of the core yarn 7 is too fast. Then, the control system of the spinning machine can be used to adjust the front roller 10, the middle roller 2, or the back roller 3 to restore the air supply speed of the core yarn 7, thereby avoiding the phenomenon of uneven core yarn in the core-spun yarn.

[0039] Specifically, sensor 1206 can preferably be a reed switch, which includes two magnetizable reeds overlapping at their ends, sealed in a glass tube. The distance between the two reeds is only about a few micrometers. The glass tube is filled with a high-purity inert gas. When not in operation, the two reeds are not in contact. An external magnetic field causes different polarities to be generated near the ends of the two reeds. As a result, the two reeds with different polarities will attract each other and close. When a permanent magnet approaches the reed switch or the magnetic field generated by the energized coil wound on the reed switch magnetizes the reeds, the contact parts of the reeds will be attracted by the magnetic force. When the attraction force is greater than the spring force of the reeds, the normally open contacts will close; when the magnetic force decreases to a certain extent, the contacts will be opened by the spring force of the reeds. Therefore, when the speed of the guide wheel 1203 is set within a certain range, the reed switch will activate when the speed exceeds the tolerance, and indicator light 1207 will light up.

[0040] For example, when the reed switch senses the magnet, it conducts and transmits a signal to the monitoring CPU of the control module. Because the guide wheel 1203 rotates continuously, the reed switch will repeatedly work or not work periodically, that is, continuously generate monitoring signals. The signal transmitted to the CPU is also a periodically changing periodic pulse signal. The CPU determines whether the core wire is broken by calculating the number of signals transmitted by the reed switch within a certain period of time. If the set time is 5 seconds, under normal circumstances, the reed switch should return 10 pulse signals within 5 seconds. If the core wire is broken, the returned signal will become 0. At this time, the CPU determines that the core wire is broken and simultaneously outputs a signal after a delay of 3-5 seconds to activate the roving to break the main body, cut the roving, avoid yarn waste, and avoid hollow core yarn.

[0041] If the number of signals returned within 5 seconds is less than 10 but greater than 0, for example, 5 signals are returned, then the CPU determines that the core yarn is in an abnormal speed condition. At the same time, it delays for 3-5 seconds and outputs a signal to enable the roving to interrupt the main body, cut the roving, avoid yarn waste, avoid hollow core yarn, and avoid the production of substandard core-spun yarn.

[0042] Specifically, sensor 1206 can preferably be a Hall sensor. When the first magnet 1208 and the second magnet 1213 rotate past the Hall sensor, the Hall sensor generates a monitoring signal and sends it to the control module through the Hall effect.

[0043] Example 2

[0044] like Figures 2 to 5 As shown, a core yarn cake 6 is placed on two fixed rollers 601 of the spinning machine. The two fixed rollers 601 can rotate. When the core yarn 7 is under tension, it can drive the core yarn cake 6 to rotate on the two fixed rollers 601, so that the core yarn 7 unfolds and is fed out from the core yarn cake 6. After being fed out from the core yarn cake 6, the core yarn 7 passes through the core yarn monitoring device 12 and enters the cradle 9. The core yarn monitoring device 12 includes a swing arm 1202. The left end of the swing arm 1202 is hinged to a guide wheel through a first hinge shaft 8. 1203, the right end of the swing arm 1202 is hinged to the top of the upper cover 504 of the roving stop body through the first hinge shaft 1201. The core yarn 7 is wound around the outer circumference of the guide wheel 1203. After passing through the guide wheel 1203, the core yarn 7 enters the rocker arm 9, and after being guided by the guide wheel 13, it enters the front roller 10 and merges with the roving to form core-spun yarn. The core-spun yarn then passes through the middle roller 2 and the front roller 10 in sequence. After exiting the front roller 10, it enters the yarn roller 11 for winding, and the finished core-spun yarn cake is produced.

[0045] The swing arm 1202 of the core wire monitoring device 12 has a cavity and a cover plate 1214, which is sealed by bolts through the connecting column 1204. A circuit board 1205 is fixed to the top of the cavity. A sensor 1206 and an indicator light 1207 are fixed to the circuit board 1205. The indicator light 1207 is exposed on the outside of the swing arm through the wall of the cavity. The first hinge shaft 8 is fixed to the side of the circuit board 1205. The outer circumference of the first hinge shaft 8 is provided with a fixing plate 1209, a bearing 1210 and a bearing retaining ring 1211 from left to right. The outer ring of the bearing 1210 is fixed with a guide wheel 1203. The retaining ring 1212 fixes the bearing retaining ring 1211 in the center hole of the guide wheel 1203. The fixing plate 1209 is snapped into the left side of the guide wheel 1203. The first magnet 1208 and the second magnet 1213 are symmetrically fixed on the fixing plate 1209.

[0046] In practical use:

[0047] The core wire 7 drives the guide wheel 1203 to rotate. Since the fixed plate 1209 is fixed together with the guide wheel 1203, the fixed plate 1209 also rotates with the guide wheel 1203. Since the first magnet 1208 and the second magnet 1213 are symmetrically fixed on the fixed plate 1209, when the guide wheel 1203 rotates one revolution, the sensor 1206 can detect and generate two monitoring signals, which come from the first magnet 1208 and the second magnet 1213 respectively.

[0048] When the core yarn 7 breaks, the guide wheel 1203 loses the winding drive of the core yarn 7 and thus loses the power to rotate and cannot rotate. At this time, the sensor 1206 cannot generate a monitoring signal, and it can be determined that the core yarn 7 has broken. At this time, the drive device fixed on the cradle through the fixing hole 501 drives the push plate 4 to slide, which drives the wedge 503 in the slot 502 to insert into the rear roller 3, so that the roving and core yarn 7 stop supplying at the same time, and an alarm message is issued through the control module, waiting for further processing.

[0049] When the air supply speed of the core yarn 7 is too slow, the sensor 1206 detects that the time interval between two monitoring signals becomes longer. If this time interval exceeds the allowable range specified by the system, it indicates that the supply of the core yarn 7 is too slow. Then, the control system of the spinning machine can be used to adjust the front roller 10, the middle roller 2, or the rear roller 3 to restore the air supply speed of the core yarn 7, thereby avoiding the phenomenon of uneven core yarn in the core-spun yarn.

[0050] When the air supply speed of the core yarn 7 is too fast, the sensor 1206 detects that the time interval between two monitoring signals becomes shorter. If this time interval exceeds the allowable range specified by the system, it indicates that the supply of the core yarn 7 is too fast. Then, the control system of the spinning machine can be used to adjust the front roller 10, the middle roller 2, or the back roller 3 to restore the air supply speed of the core yarn 7, thereby avoiding the phenomenon of uneven core yarn in the core-spun yarn.

[0051] Specifically, sensor 1206 can preferably be a reed switch, which includes two magnetizable reeds overlapping at their ends, sealed in a glass tube. The distance between the two reeds is only about a few micrometers. The glass tube is filled with a high-purity inert gas. When not in operation, the two reeds are not in contact. An external magnetic field causes different polarities to be generated near the ends of the two reeds. As a result, the two reeds with different polarities will attract each other and close. When a permanent magnet approaches the reed switch or the magnetic field generated by the energized coil wound on the reed switch magnetizes the reeds, the contact parts of the reeds will be attracted by the magnetic force. When the attraction force is greater than the spring force of the reeds, the normally open contacts will close; when the magnetic force decreases to a certain extent, the contacts will be opened by the spring force of the reeds. Therefore, when the speed of the guide wheel 1203 is set within a certain range, the reed switch will activate when the speed exceeds the tolerance, and indicator light 1207 will light up.

[0052] For example, when the reed switch senses the magnet, it conducts and transmits a signal to the monitoring CPU of the control module. Because the guide wheel 1203 rotates continuously, the reed switch will repeatedly work or not work periodically, that is, continuously generate monitoring signals. The signal transmitted to the CPU is also a periodically changing periodic pulse signal. The CPU determines whether the core wire is broken by calculating the number of signals transmitted by the reed switch within a certain period of time. If the set time is 5 seconds, under normal circumstances, the reed switch should return 10 pulse signals within 5 seconds. If the core wire is broken, the returned signal will become 0. At this time, the CPU determines that the core wire is broken and simultaneously outputs a signal after a delay of 3-5 seconds to activate the roving to break the main body, cut the roving, avoid yarn waste, and avoid hollow core yarn.

[0053] If the number of signals returned within 5 seconds is less than 10 but greater than 0, for example, 5 signals are returned, then the CPU determines that the core yarn is in an abnormal speed condition. At the same time, it delays for 3-5 seconds and outputs a signal to enable the roving to interrupt the main body, cut the roving, avoid yarn waste, avoid hollow core yarn, and avoid the production of substandard core-spun yarn.

[0054] Specifically, sensor 1206 can preferably be a Hall sensor. When the first magnet 1208 and the second magnet 1213 rotate past the Hall sensor, the Hall sensor generates a monitoring signal and sends it to the control module through the Hall effect.

[0055] Example 3

[0056] Based on Embodiment 1 or Embodiment 2, the core yarn monitoring device is equipped with a control module. The control module is fixedly connected to the frame of the spinning machine. The control module acquires the rotation state of the guide wheel to determine the core yarn supply status. The control module acquires the signal M generated when the guide wheel rotates and records the time T taken for the guide wheel to rotate one revolution. The number of times the signal M acquired within a set time period F is compiled into a set M1, and the time T taken for the guide wheel to rotate one revolution within the set time period F is compiled into a set T1. The difference M2 between each value in set M1 and the standard value is calculated, and the difference T2 between the values ​​in set T1 and the standard value is calculated. The rotation status of the guide wheel is determined by the magnitude and frequency of the difference M2 and the difference T1. When determining the rotation status of the guide wheel by the magnitude and frequency of the difference M2 and the difference T1, the average value M3 of the difference M2 within the time period F is calculated, and the average value T3 of the difference T2 within the time period F is calculated. When the average value M3 deviates from the standard average value M4, or when the average value T3 deviates from the standard average value T4, the control module determines that the rotation of the guide wheel is abnormal.

[0057] Specifically, for example, within the specified drawing range of the core wire, the allowable range of the difference M2 is (0.1-0.3), which means that the time T taken for the guide wheel to rotate one revolution is 0.1-0.3 seconds faster or slower than the fixed standard. When the value of M2 exceeds (0.1-0.3), that is, the time T taken for the guide wheel to rotate one revolution is faster or slower than the fixed standard, it is determined that the guide wheel rotation is abnormal, that is, the core wire has been unexpectedly drawn. Similarly, the method for judging the difference T2 is the same as that for M2.

[0058] Specifically, the control module determines whether there is any unexpected stretching of the core yarn based on the rotation status of the guide yarn wheel, and outputs a determination signal. The determination signal is sent to the control system of the spinning machine to provide a control basis for the control system.

[0059] This embodiment also provides another analysis method. When determining the rotation status of the guide wheel using the magnitude and frequency of the difference M2 and the difference T1, the average value M3 of the difference M2 within the time period F is calculated, and the average value T3 of the difference T2 within the time period F is calculated. When the average value M3 deviates from the standard average value M4, or when the average value T3 deviates from the standard average value T4, the control module determines that the rotation of the guide wheel is abnormal.

[0060] Using average values ​​allows for the measurement of the guide wheel's rotation over a period of time, preventing frequent alarms from the system due to a single abnormal data point, such as relative slippage between the core wire and the guide wheel causing the guide wheel to rotate slowly.

[0061] Specifically, the rotation status of the guide wheel can be measured by using an average value over a period of time, which shall not exceed 10 seconds.

[0062] Example 4

[0063] Based on Embodiment 3, the swing arm 1202 is hinged to the upper cover 504 of the roving stop body at the hinge seat 5005. An angle sensor 1215 for monitoring the swing of the swing arm 1202 is provided at the second hinge shaft 1201. The control module is connected to the angle sensor 1215 and obtains the measured value of the angle sensor 1215. The measured value of the angle sensor 1215 is W. When the value of W is within the specified range, and when the average value M3 deviates from the standard average value M4, or when the average value T3 deviates from the standard average value T4, the control module determines that the guide wheel 1203 is faulty.

[0064] The foregoing has broadly outlined some aspects and features of the various embodiments and should be interpreted as merely illustrative of potential applications. Other beneficial results can be obtained by applying the disclosed information in different ways or by combining aspects of the disclosed embodiments. Further aspects and a more complete understanding can be obtained based on the detailed description of exemplary embodiments with reference to the accompanying drawings, within the scope defined by the claims.

[0065] The above embodiments provide a detailed description of the present invention. Of course, the above description is not intended to limit the present invention, nor is the present invention limited to the examples described above. Any changes, modifications, additions, reductions, or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A device for monitoring the core yarn of core-spun yarn on a ring spinning machine, the device comprising a guide wheel, characterized in that, The guide wheel is hinged to one end of the swing arm, and the other end of the swing arm is provided with a connecting shaft. The swing arm is equipped with a sensor. The core wire is wrapped around one side of the guide wheel and drives the guide wheel to rotate. The control module of the core wire monitoring device obtains the rotation status signal of the guide wheel measured by the sensor and determines the supply status of the core wire. The core yarn monitoring device is equipped with a control module, which is fixedly connected to the frame of the spinning machine. The control module obtains the rotation state of the guide wheel to determine the core yarn supply status. The control module acquires the signal M generated when the guide wheel rotates, and records the time T taken for the guide wheel to rotate one revolution. It forms a set M1 with the number of times the signal M acquired within a set time period F, and forms a set T1 with the time T taken for the guide wheel to rotate one revolution within the set time period F. It calculates the difference M2 between each value in set M1 and the standard value, and calculates the difference T2 between the values ​​in set T1 and the standard value. It uses the magnitude and frequency of the difference M2 and the difference T1 to determine the rotation status of the guide wheel. The control module determines whether the core wire has been unexpectedly stretched based on the rotation status of the guide wire wheel, and outputs a determination signal; When determining the rotation status of the guide wheel using the magnitude and frequency of the difference M2 and the difference T1, the average value M3 of the difference M2 within the time period F is calculated, and the average value T3 of the difference T2 within the time period F is calculated. When the average value M3 deviates from the standard average value M4, or when the average value T3 deviates from the standard average value T4, the control module determines that the rotation of the guide wheel is abnormal. The swing arm and the upper cover of the roving stop body are hinged at the hinge seat. An angle sensor for monitoring the swing arm swing is provided at the second hinge shaft. The control module is connected to the angle sensor and obtains the measured value of the angle sensor. The measured value of the angle sensor is W. When the value of W is within the specified range, and when the average value M3 deviates from the standard average value M4, or when the average value T3 deviates from the standard average value, the control module determines that the guide wheel is faulty.

2. The device for monitoring the core filament of core-spun yarn on a ring spinning machine according to claim 1, characterized in that, The guide wheel has a through hole at its rotation center, and a bearing is fixed inside the through hole. The inner ring of the bearing is engaged with the fixed shaft at the end of the swing arm.

3. The device for monitoring the core filament of core-spun yarn on a ring spinning machine according to claim 2, characterized in that, The guide wheel is equipped with a magnet on its side. When the guide wheel drives the magnet to rotate, the magnet passes over the sensor, causing the sensor to generate a rotation signal of the guide wheel and send it to the control module of the core wire monitoring device.

4. The device for monitoring the core filament of core-spun yarn on a ring spinning machine according to claim 3, characterized in that, The sensor is a reed switch.

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