WO2013042427A1

WO2013042427A1 - Spinning machine, take-up device, and textile machine

Info

Publication number: WO2013042427A1
Application number: PCT/JP2012/067088
Authority: WO
Inventors: 朋之一階
Original assignee: 村田機械株式会社
Priority date: 2011-09-22
Filing date: 2012-07-04
Publication date: 2013-03-28
Also published as: CN103827366B; JP2013067916A; CN103827366A; EP2759623A1; EP2759623A4

Abstract

Provided are a spinning machine, take-up device, and textile machine in which periodic abnormalities in rotating bodies can be detected and the detection precision improved. The constitution is such that either or both of torque and rotational speed for a motor that drives a rotating body for drafts or take-up is monitored, and on the basis of the results of this monitoring, the presence or absence of periodic abnormalities in this rotating body is determined. For example, when a fiber bundle moving with the rotation of the rotating body has an abnormality such as the thickness varying periodically, the load torque operating in the motor varies or the rotational speed of the motor varies. Therefore, by monitoring either or both of the motor torque and rotational speed, the presence or absence of a periodic abnormality in the rotating body can be determined, and a periodic abnormality in a fiber bundle drafted or taken up using the rotating body can be detected.

Description

Spinning machine, winding device, and textile machine

The present invention relates to a spinning machine, a winding device, and a textile machine.

Conventionally, a textile machine described in Patent Document 1 is known as a technique in such a field. In the technique described in Patent Document 1, by digitizing a yarn spot electric signal taken out from a yarn spot detector (for example, clearer) attached to a textile machine such as a spinning machine, and analyzing the digitized signal by a calculator, Thread spots are detected.

Also, the technique described in Patent Document 2 is known as a method for detecting an abnormality in a spinning machine draft device. In this technology, the presence or absence of a change in load torque acting on the drive motor that drives the draft roller is monitored, and when the load torque changes by a predetermined ratio or more, it is determined that there is an abnormality and the operation of the draft device is stopped. .

Sho 58-62511 JP 2003-166135 A

In the technique described in Patent Document 1, if the detection accuracy of the spot detector itself is insufficient, periodic spots with a relatively long period may not be detected. The technique described in Patent Document 2 monitors the presence or absence of a change in load torque of the motor, but does not detect periodic abnormalities.

An object of the present invention is to provide a spinning machine that can detect a periodic abnormality of a draft roller and can improve detection accuracy.

An object of the present invention is to provide a winding device that can detect a periodic abnormality of a rotating drum and can improve detection accuracy.

An object of the present invention is to provide a textile machine that can detect a periodic abnormality of a rotating body and can improve detection accuracy.

The spinning machine includes a draft roller that drafts the fiber bundle, a motor that rotationally drives the draft roller, a monitoring unit that monitors at least one of the torque and the rotation speed of the motor, and a fiber bundle based on a result of monitoring by the monitoring unit. And a periodic unevenness determining unit for determining a periodic abnormality of the draft roller that occurs as periodic unevenness.

According to this spinning machine, at least one of the torque and the rotational speed of the motor that drives the draft roller that drafts the fiber bundle is monitored, and the presence or absence of a periodic abnormality of the draft roller is determined based on the monitoring result. Can do. Thereby, the periodic abnormality of the draft roller which generate | occur | produces as a periodic spot in a fiber bundle can be detected, and the periodic abnormality of the drafted fiber bundle can be detected. Conventionally, when a spot detector (clearer) generally installed in a spinning machine is used to detect long-period spots, it may not be detected. Compared with the clearer, the torque and / or rotational speed value (monitor value) of the motor can be detected with high accuracy. The periodic abnormality of the bundle can be accurately determined.

The periodic unevenness determination unit may determine a periodic abnormality of the draft roller by performing frequency analysis on a value related to at least one of torque and rotation speed, which is a result of monitoring by the monitoring unit. Since the frequency analysis is an effective means for determining a periodic abnormality, the periodic abnormality of the draft roller can be detected with high accuracy.

The spinning machine includes a plurality of draft rollers arranged along the conveyance direction of the fiber bundle, and a plurality of motors that individually drive the plurality of draft rollers. Based on this, it may be determined which of the plurality of motors has a periodic abnormality. Thereby, the periodic unevenness determination unit can reliably specify which of the plurality of draft rollers has the cause of the periodic unevenness. In the conventional spot detection using the clearer, when a plurality of periodic spots are overlapped, it is difficult to determine which draft roller the periodic spots are caused by.

The spinning machine further includes a periodic spot detection unit disposed on the downstream side of the draft roller. The periodic spot detection unit detects the spot of the fiber bundle drafted by the draft roller. The periodic unevenness determination unit determines a periodic abnormality of the draft roller based on the monitoring result by the monitoring unit and the detection result by the unevenness detection unit, and the periodic unevenness of the fiber bundle is determined based on the determination result. It is good also as a structure to detect. Based on the results of both the monitoring results of the motor that drives the draft roller and the detection results of the fiber bundle spots by the spot detection section, the periodic spot determination section accurately detects the periodic abnormality of the draft rollers. it can.

The spinning machine may further include a notification unit that notifies information related to a result of monitoring by the monitoring unit. The worker can easily confirm the periodic abnormality of the draft roller based on the information notified by the notification unit, and can appropriately take appropriate measures. For example, examples of the notification unit include a display unit and an audio output unit. When the notification unit is a display unit, the worker can easily check the display unit for periodic abnormalities.

The spinning machine includes an air spinning device that spins a fiber bundle drafted by a draft roller by a swirling flow, and a winding device that winds the fiber bundle spun from the air spinning device into a package. The determination unit determines a periodic abnormality of the draft roller during winding of the package by the winding device.

The periodic unevenness determination unit can determine a periodic abnormality of the draft roller even during winding of the package. Therefore, it is possible to suppress a decrease in operating efficiency of the spinning machine.

The winding device rotates in contact with the winding package and causes the winding package to wind the yarn, a motor that rotationally drives the rotating drum, and at least one of torque and rotational speed of the motor And a determination unit for determining a periodic abnormality of the rotating drum based on a result of monitoring by the monitoring unit.

According to this winding device, it is possible to monitor at least one of the torque and the rotational speed of the motor that drives the rotating drum, and to determine the presence or absence of a periodic abnormality of the rotating drum based on the monitoring result. As a result, periodic abnormality of the rotating drum can be detected, and the eccentricity of the winding package can be reliably detected, so that the reliability of the winding device can be improved. Examples of the winding device include a winding device for a spinning machine and an automatic winder.

The determination unit may determine a periodic abnormality of the rotating drum by performing frequency analysis on a value related to at least one of torque and rotation speed, which is a result of monitoring by the monitoring unit. Since the frequency analysis is an effective means for determining a periodic abnormality, it is possible to accurately detect the periodic abnormality of the rotating drum.

The winding device may further include a notification unit that notifies information related to a result of monitoring by the monitoring unit. The worker can easily confirm the periodic abnormality of the rotating drum based on the information notified by the notification unit, and can appropriately take appropriate measures. For example, examples of the notification unit include a display unit and an audio output unit. When the notification unit is a display unit, the worker can easily check the display unit for periodic abnormalities.

The textile machine includes a rotating body for transporting the fiber bundle, a motor that rotationally drives the rotating body, a monitoring unit that monitors at least one of torque and rotation speed of the motor, and a result of monitoring by the monitoring unit. And a determination unit for determining a periodic abnormality of the rotating body.

According to this textile machine, at least one of the torque and rotational speed of the motor that drives the rotating body for conveying the fiber bundle is monitored, and the presence or absence of a periodic abnormality of the rotating body is determined based on the monitoring result. can do. The “rotating body that conveys the fiber bundle” refers to the rotation of the rotating body such as “drafts the fiber bundle (sliver)” and / or “winds up the yarn” in addition to those that convey the fiber bundle. Along with this, it is possible to carry out predetermined processing.

For example, if there is an abnormality in the fiber bundle that moves with the rotation of the rotating body (including sliver, yarn, etc.) such as periodically varying thicknesses, the load torque acting on the motor fluctuates. The rotational speed of the motor fluctuates. Therefore, by monitoring at least one of the torque and the rotational speed of the motor, it is possible to determine the presence or absence of a periodic abnormality of the rotating body and to detect the periodic abnormality of the fiber bundle processed by the rotating body. It is possible to detect long-period periodic spots that have been difficult to detect with a conventional spot detector (clearer).

The determination unit may determine a periodic abnormality of the rotating body by performing frequency analysis on a value related to at least one of torque and rotation speed, which is a result of monitoring by the monitoring unit. Since the frequency analysis is an effective means for determining a periodic abnormality, the periodic abnormality of the rotating body can be accurately detected.

The textile machine may further include a notification unit that notifies information related to a result of monitoring by the monitoring unit. The worker can easily check the periodic abnormality of the rotating body based on the information notified by the notification unit, and can appropriately take appropriate measures. For example, examples of the notification unit include a display unit and an audio output unit. When the notification unit is a display unit, the worker can easily check the display unit for periodic abnormalities.

According to the spinning machine of the present invention, it is possible to detect a periodic abnormality of the draft roller, and it is possible to improve the detection accuracy.

According to the winding device of the present invention, it is possible to detect a periodic abnormality of the rotating drum, and to improve the detection accuracy.

According to the textile machine of the present invention, it is possible to detect a periodic abnormality of the rotating body and improve detection accuracy.

1 is a front view of a spinning machine according to an embodiment of the present invention. It is a longitudinal cross-sectional view of the spinning machine shown in FIG. It is a block block diagram which shows the unit controller of the spinning unit which concerns on 1st Embodiment of this invention. It is a block block diagram which shows the unit controller of the spinning unit which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the procedure performed by a periodic spot detection process. It is a schematic block diagram which shows the winder unit of the automatic winder which concerns on 3rd Embodiment of this invention.

A spinning machine (spinning machine) according to an embodiment of the present invention will be described with reference to the drawings. In this specification, “upstream” and “downstream” mean upstream and downstream in the running direction of the yarn during spinning.

1 and 2 includes a plurality of spinning units 2 arranged side by side. The spinning machine 1 includes a yarn splicing carriage 3 provided so as to be able to run along the direction in which the spinning units 2 are arranged, a prime mover box 5, a central control unit (not shown) that controls the spinning machine 1, And a unit controller 60 (see FIGS. 3 and 4) for controlling the spinning unit 2.

The central control unit is arranged, for example, inside the motor box 5. The central control unit is electrically connected to the plurality of unit controllers 60 and controls the plurality of unit controllers 60 in an integrated manner. The unit controller 60 is provided in each spinning unit 2 and individually controls each spinning unit 2 (details will be described later).

Each spinning unit 2 (spinning machine) includes, in order from upstream to downstream, a draft device 7, a spinning unit 9 (air spinning device), a yarn clearer 52, a yarn slack eliminating device 12 (yarn storage device), and a winding device. 13 is provided. A draft device 7 is provided in the vicinity of the upper end of the casing 6 of the spinning machine 1. The fiber bundle 8 delivered from the draft device 7 is introduced into the spinning unit 9 and spun. The spun yarn 10 spun in the spinning unit 9 passes through the yarn clearer 52, and then is sent by the yarn slack eliminating device 12 and wound by the winding device 13, whereby a package 45 is formed.

Draft device 7 draws sliver 15 into fiber bundle 8. The draft device 7 has a plurality of pairs of

draft rollers

16, 17, 19, and 20 (rotating bodies) arranged along the feeding direction (conveying direction) of the fiber bundle 8, and the

draft rollers

16, 17, 19, And 20 are used to draft the fiber bundle 8. As shown in FIG. 2, the draft device 7 includes a back roller 16, a third roller 17, a second roller 19 around which an apron belt 18 is wound, and a front roller 20 as a plurality of

draft rollers

16, 17, 19, and 20. It has. The

draft rollers

16, 17, 19, and 20 each have a pair of top rollers and bottom rollers. The top roller and the bottom roller are arranged so as to sandwich the sliver 15.

The draft device 7 includes a draft cradle (not shown). The draft cradle supports the top roller and swings and opens and closes via a predetermined spindle. With the draft cradle closed, the top roller and the bottom roller come into contact with each other, and the draft device 7 drafts the fiber bundle 8. If the draft cradle is not closed at the normal position, periodic spots may occur in the fiber bundle 8.

The draft device 7 includes motors 31 to 34 for driving the bottom rollers of the plurality of

draft rollers

16, 17, 19 and 20. The motor 31 rotates the back roller 16. The motor 32 rotationally drives the third roller 17. The motor 33 rotationally drives the second roller 19. The motor 34 drives the front roller 20 to rotate. In this embodiment, one draft roller is rotationally driven by one motor, but a plurality of draft rollers may be rotationally driven by one motor. For example, both the back roller 16 and the third roller 17 that are low-speed draft rollers may be driven to rotate by a single motor.

The top rollers of the plurality of

draft rollers

16, 17, 19, and 20 are provided so as to be driven and rotated by bottom rollers that are rotationally driven by motors 31 to 34.

The spinning unit 2 includes a motor control unit 30 that controls the rotation of the motors 31 to 34. The motor control unit 30 is electrically connected to the motors 31 to 34. The motor control unit 30 can detect the load torque acting on the motors 31 to 34. The motor control unit 30 can detect the rotational speed of the output shafts of the motors 31 to 34. The motor control unit 30 only needs to be able to detect at least one of torque and rotation speed. The motor control unit 30 outputs data relating to the torque and / or rotational speed of the motors 31 to 34 to the unit controller 60.

Although a detailed configuration of the spinning unit 9 is not illustrated, in this embodiment, a pneumatic type is used in which the fiber bundle 8 is twisted by using a swirling air flow (swirl flow) to generate the spun yarn 10. ing.

The yarn slack eliminating device 12 applies a predetermined tension to the spun yarn 10 and pulls out the spun yarn 10 from the spinning unit 9. The yarn slack eliminating device 12 prevents the slack of the spun yarn 10 by retaining the spun yarn 10 sent from the spinning unit 9 at the time of yarn splicing by the yarn splicing carriage 3. The yarn slack eliminating device 12 adjusts the tension of the spun yarn 10 so that the fluctuation of the tension of the spun yarn 10 on the winding device 13 side is not transmitted to the spinning unit 9.

The yarn slack eliminating device 12 includes a slack eliminating roller (yarn accumulating roller) 21, a yarn hooking member 22, an upstream guide 23, an electric motor 25, a downstream guide 26, and a yarn accumulating amount sensor 27.

The yarn hooking member 22 is configured to be engageable with the spun yarn 10, and rotates integrally with the slack eliminating roller 21 while being engaged with the spun yarn 10, so that the spun yarn 10 is formed on the outer peripheral surface of the slack eliminating roller 21. Wrap.

The slack eliminating roller 21 winds and stores a predetermined amount of the spun yarn 10 around its outer peripheral surface. The slack eliminating roller 21 is rotationally driven by an electric motor 25. The spun yarn 10 wound around the outer peripheral surface of the slack eliminating roller 21 is wound so as to tighten the slack eliminating roller 21 as the slack eliminating roller 21 rotates, and the spun yarn upstream of the yarn slack eliminating device 12 is wound. Pull ten. That is, by rotating the slack eliminating roller 21 with the spun yarn 10 wound around the outer peripheral surface at a predetermined rotation speed, a predetermined tension is applied to the spun yarn 10 and the spun yarn 10 is fed from the spinning unit 9 at a predetermined speed. Pull out and transport downstream at a predetermined speed.

A predetermined contact area can be secured between the slack eliminating roller 21 and the spun yarn 10 by winding a predetermined amount of the spun yarn 10 around the outer peripheral surface of the slack eliminating roller 21. As a result, the slack eliminating roller 21 can hold and pull the spun yarn 10 with a sufficient force, and the spun yarn 10 can be pulled out from the spinning unit 9 at a stable speed without causing a slip or the like. As shown in FIG. 2, there is no other configuration (such as a conventional delivery roller) for applying tension to the spun yarn 10 between the spinning unit 9 and the yarn slack eliminating device 12. The drawing speed of 10 is determined by the rotational speed of the slack eliminating roller 21. Therefore, in the spinning machine 1 of this embodiment, the yarn slack eliminating device 12 applies tension to the spun yarn 10, and the spun yarn 10 can be pulled out from the spinning unit 9 at a precise speed with little variation.

The yarn storage amount sensor 27 detects the storage amount of the spun yarn 10 stored on the slack eliminating roller 21 in a non-contact manner and transmits it to the unit controller 60.

The upstream guide 23 is disposed slightly upstream of the slack eliminating roller 21. The upstream guide 23 appropriately guides the spun yarn 10 with respect to the outer peripheral surface of the slack eliminating roller 21. The upstream guide 23 prevents the twist of the spun yarn 10 propagating from the spinning unit 9 from being transmitted to the downstream side of the upstream guide 23.

A yarn clearer 52 is provided on the front side of the casing 6 of the spinning machine 1 and at a position between the spinning unit 9 and the yarn slack eliminating device 12. The spun yarn 10 spun by the spinning unit 9 passes through the yarn clearer 52 before being wound by the yarn slack eliminating device 12. The yarn clearer 52 monitors the thickness of the traveling spun yarn 10 and transmits a yarn defect detection signal to the unit controller 60 (control unit) when a yarn defect of the spun yarn 10 is detected. The yarn clearer 52 is arranged on the downstream side of the draft device 7 and functions as a spot detection unit that detects spots of the fiber bundle 8 drafted by the draft device 7.

When the yarn defect is detected and the splicing is performed, the unit controller 60 stops the draft device 7 and the spinning unit 9 and the like at a predetermined timing. At this time, the unit controller 60 cuts the spun yarn 10 by stopping the ejection of compressed air from the nozzle that generates the swirling airflow of the spinning unit 9.

The unit controller 60 sends a control signal to the yarn splicing carriage 3 and travels to the front of the spinning unit 2. Thereafter, the spinning unit 9 and the like are driven again, and the yarn joining cart 3 is spliced to resume winding. At this time, the yarn slack eliminating device 12 stays in the slack eliminating roller 21 with the spun yarn 10 continuously fed from the spinning unit 9 from when the spinning unit 9 resumes spinning until winding is resumed. To remove the slack of the spun yarn 10.

The yarn joining cart 3 includes a splicer (yarn joining device) 43, a suction pipe 44, and a suction mouth 46. When yarn breakage or yarn cut occurs in a spinning unit 2, the yarn joining cart 3 travels on the rail 41 to the spinning unit 2 and stops. The suction pipe 44 sucks and captures the yarn end sent from the spinning unit 9 and guides it to the splicer 43 while rotating in the vertical direction about the axis. The suction mouse 46 sucks the yarn end from the package 45 supported by the winding device 13 and guides it to the splicer 43 while rotating in the vertical direction about the axis. The splicer 43 performs splicing between the guided yarn ends.

The winding device 13 includes a cradle arm 71 supported so as to be swingable around the support shaft 70. The cradle arm 71 rotatably supports a bobbin 48 for winding the spun yarn 10.

The winding device 13 includes a winding drum 72 (rotary drum) and a traverse device 75. The winding drum 72 can be driven in contact with the outer peripheral surface of the bobbin 48 or the package 45. The traverse device 75 includes a traverse guide 76 that can be engaged with the spun yarn 10. The winding device 13 rotates the package 45 in contact with the winding drum 72 by driving the winding drum 72 by an electric motor (not shown) while reciprocating the traverse guide 76 by driving means (not shown). The spun yarn 10 is wound while traversing. In FIG. 1, the winding device 13 is illustrated to wind up the cheese-shaped package 45. However, the winding device 13 may be configured to wind up a cone-shaped package.

The spinning machine 1 may be configured such that the winding drums 72 of the plurality of spinning units 2 are rotationally driven by a common electric motor, or each spinning unit 2 is provided with an individual electric motor, and each winding drum 72 is rotationally driven independently. The structure to do may be sufficient.

The unit controller 60 can detect periodic abnormalities of the

draft rollers

16, 17, 19, and 20. The unit controller (control unit) 60 includes a central processing unit (CPU) that performs arithmetic processing, a read only memory (ROM) that functions as a storage unit, and a random access memory (RAM), an input signal circuit, an output signal circuit, and a power supply circuit. Etc. The unit controller 60 executes a program stored in the storage unit, thereby realizing a yarn spot signal detection unit 61, a yarn spot periodic spot determination unit 62, a motor monitor unit 63 (monitoring unit), and a motor cycle spot determination unit 64. The

The yarn spot signal detection unit 61 is electrically connected to the yarn clearer 52 and acquires information related to the yarn spot output from the yarn clearer 52. The yarn unevenness period unevenness determination unit 62 acquires information output from the yarn unevenness signal detection unit 61 and determines whether or not periodic yarn unevenness (periodic unevenness) is formed on the spun yarn 10.

The motor monitor unit 63 is electrically connected to the motor control unit 30, and information (monitor value) regarding the torques of the motors 31 to 34 output from the motor control unit 30 and / or information regarding the rotation speed of the motors 31 to 34. (Monitor value) is acquired. The motor monitor unit 63 functions as a monitoring unit that monitors at least one of the torque and rotation speed of the motors 31 to 34. The information related to the motor torque includes information related to the load torque acting on the output shaft of the motor, as well as information capable of calculating this torque. The information related to the rotational speed of the motor includes information related to the rotational speed of the output shaft of the motor as well as information that can calculate the rotational speed.

The motor period unevenness determination unit 64 acquires information (monitor value) regarding the torque of the motors 31 to 34 output from the motor monitor unit 63 and / or information (monitor value) regarding the rotation speed of the motors 31 to 34, The presence / absence of a periodic abnormality in the

draft rollers

16, 17, 19, and 20 is determined. The motor periodic unevenness determination unit 64 determines that the spun yarn 10 has periodic unevenness when it detects a periodic abnormality in at least one of the

draft rollers

16, 17, 19, and 20.

The motor periodic unevenness determination unit 64 specifies which of the plurality of

draft rollers

16, 17, 19, and 20 has a periodic abnormality. When it is determined that the monitor value of the motor 31 has a periodic abnormality, the motor periodic unevenness determination unit 64 determines that the back roller 16 has a periodic abnormality. When it is determined that the monitor value of the motor 32 has a periodic abnormality, the motor periodic unevenness determination unit 64 determines that the third roller 17 has a periodic abnormality. When it is determined that the monitor value of the motor 33 has a periodic abnormality, the motor periodic unevenness determination unit 64 determines that the second roller 19 (or the apron belt 18) has a periodic abnormality. When it is determined that the monitor value of the motor 34 has a periodic abnormality, the motor periodic unevenness determination unit 64 determines that the front roller 20 has a periodic abnormality.

The motor periodic unevenness determination unit 64 performs frequency analysis on a value (monitor value) related to at least one of the torque and the rotational speed of the motors 31 to 34, thereby determining whether or not the

draft rollers

16, 17, 19, and 20 have a periodic abnormality. Determine. The motor periodic unevenness determination unit 64 performs, for example, a fast Fourier transform (FFT) calculation as a frequency analysis, and converts the time axis into a frequency. The monitor periodic unevenness determination unit 64 may determine the periodic abnormality of the

draft rollers

16, 17, 19, and 20 by analyzing torque and / or rotational speed using other methods.

The spinning machine 1 may include a unit controller 60B shown in FIG. 4 instead of the unit controller 60 shown in FIG. The unit controller 60B shown in FIG. 4 is different from the unit controller 60 shown in FIG. 3 in that a periodic spot determining unit 65 is provided instead of the thread spot periodic spot determining unit 62 and the motor periodic spot determining unit 63. .

The periodic unevenness determination unit 65 acquires information related to the detection result output from the yarn unevenness signal detection unit 61, information related to the torque of the motors 31 to 34 output from the motor monitor unit 63 (monitor value), and / or the motor. Information (monitor value) on rotation speeds 31 to 34 is acquired. The periodic unevenness determination unit 65 detects periodic abnormalities of the

draft rollers

16, 17, 19, and 20 based on the monitoring result (monitor value) by the motor monitor unit 63 and the detection result by the yarn unevenness signal detection unit 61. To do. The periodic unevenness determination unit 65 determines that the spun yarn 10 has periodic unevenness when it detects a periodic abnormality in at least one of the

draft rollers

16, 17, 19, and 20. The periodic unevenness determination unit 65 has both the function of the yarn unevenness periodic unevenness determination unit 62 and the function of the motor periodic unevenness determination unit 63.

The spinning machine 1 includes a display unit 66 (notification unit) that displays a determination result by the motor periodic unevenness determination unit 64 (or the periodic unevenness determination unit 65). The display unit 66 is provided, for example, in the casing of the prime mover box 5 of the spinning machine 1. As the display unit 66, for example, a liquid crystal display device can be used. The display unit 66 is electrically connected to the unit controller 60 and can display information regarding the presence or absence of periodic abnormalities according to a signal from the unit controller 60. The operator can easily confirm the presence or absence of periodic abnormality by looking at the display content of the display unit 66. The display unit 66 can display other information in addition to the display content related to the abnormality of the

draft rollers

16, 17, 19, and 20.

Instead of the display unit 66, the spinning machine 1 may be provided with an audio output unit. Thereby, the spinning machine 1 can notify the presence or absence of abnormality using a sound and / or a warning sound. An alarm lamp or the like may be used as the display unit.

Next, with reference to FIG. 5, the periodic plaque detection process will be described. The periodic spot detection process is executed, for example, during normal spinning operation. As shown in FIG. 5, the unit controller 60 processes steps S11 to S14, steps S21 to S24, steps S31 to S34, and steps S41 to S44 in parallel. These processes are repeatedly executed. The processes of steps S11 to S14, steps S21 to S24, steps S31 to S34, and steps S41 to S44 may be performed in this order, or may be performed in other orders.

The processing from step S11 to S14 will be described. First, the motor monitor unit 63 of the unit controller 60 monitors the motor 34 that rotationally drives the bottom roller of the front roller 20, and acquires monitor values (torque, rotational speed, etc.) of the motor 34 (step S11). Next, the motor cycle unevenness determination unit 54 of the unit controller 60 acquires the monitor value of the motor 34 from the motor monitor unit 63, and performs an FFT operation on the acquired monitor value (step S12).

Next, the motor periodic unevenness determination unit 64 of the unit controller 60 determines whether or not there is a periodic abnormality based on the analysis result by the FFT calculation (step S13). For example, if the data fluctuates periodically, it is determined that a periodic abnormality exists (step S13: YES). If the unit controller 60 determines that there is a periodic abnormality, the process proceeds to step S14. If it is determined that there is no periodic abnormality (step S13: NO), the process ends here. . In step S <b> 14, the motor periodic unevenness determination unit 64 determines that the periodic unevenness caused by the front roller 20 has occurred in the spun yarn 10.

The processing from step S21 to S24 will be described. The motor monitor unit 63 of the unit controller 60 monitors the motor 33 that rotationally drives the bottom roller of the second roller 19, and acquires the monitor value (torque, rotational speed, etc.) of the motor 33 (step S21). Next, the motor cycle unevenness determination unit 54 of the unit controller 60 acquires the monitor value of the motor 33 from the motor monitor unit 63, and performs an FFT operation on the acquired monitor value (step S22).

Next, the motor periodic unevenness determination unit 64 of the unit controller 60 determines whether or not there is a periodic abnormality based on the analysis result by the FFT calculation (step S23). For example, when the part from which a value protrudes is recognized periodically, it determines with periodic abnormality existing (step S23: YES). If the unit controller 60 determines that there is a periodic abnormality, the process proceeds to step S24. If it is determined that there is no periodic abnormality (step S23: NO), the process ends here. . In step S <b> 24, the motor periodic unevenness determination unit 64 determines that the periodic unevenness caused by the second roller 19 (the apron belt 18) has occurred in the spun yarn 10.

The processing of steps S31 to S34 will be described. The motor monitor unit 63 of the unit controller 60 monitors the motor 32 that rotationally drives the bottom roller of the third roller 17, and obtains monitor values (torque, rotational speed, etc.) of the motor 32 (step S31). Next, the motor cycle unevenness determination unit 54 of the unit controller 60 acquires the monitor value of the motor 32 from the motor monitor unit 63, and performs an FFT operation on the acquired monitor value (step S32).

Next, the motor periodic unevenness determination unit 64 of the unit controller 60 determines whether or not there is a periodic abnormality based on the analysis result by the FFT calculation (step S33). For example, when the part from which a value protrudes is recognized periodically, it determines with periodic abnormality existing (step S33: YES), and progresses to step S34. If the unit controller 60 determines that there is no periodic abnormality (step S33: NO), the process here ends. In step S <b> 34, the motor periodic unevenness determination unit 64 determines that the periodic unevenness caused by the third roller 17 has occurred in the spun yarn 10.

The processing from step S41 to S44 will be described. The motor monitor unit 63 of the unit controller 60 monitors the motor 31 that rotationally drives the bottom roller of the back roller 16, and acquires the monitor value (torque, rotational speed, etc.) of the motor 31 (step S41). Next, the motor cycle unevenness determination unit 54 of the unit controller 60 acquires the monitor value of the motor 31 from the motor monitor unit 63, and performs an FFT operation on the acquired monitor value (step S42).

Next, the motor periodic unevenness determination unit 64 of the unit controller 60 determines whether or not there is a periodic abnormality based on the analysis result by the FFT calculation (step S43). For example, when the part from which a value protrudes is recognized periodically, it determines with periodic abnormality existing (step S43: YES). If the unit controller 60 determines that there is a periodic abnormality, the process proceeds to step S44. If it is determined that there is no periodic abnormality (step S43: NO), the process ends here. . In step S <b> 44, the motor periodic unevenness determination unit 64 determines that the periodic unevenness caused by the back roller 16 has occurred in the spun yarn 10.

The unit controller 60 displays the results of these determinations on the display unit 66 after steps S14, S24, S34, and S44 (step S15). The display unit 66 displays information related to the determination result based on the signal output from the unit controller 60. For example, the display unit 66 displays that the cause of periodic spots occurring in the spun yarn 10 is the front roller 20. The display unit 66 may display the

draft rollers

16, 17, 19, or 20 that are the cause of periodic spots as character information. For example, the display unit 66 may display the layout drawing of the

draft rollers

16, 17, 19, and 20 and highlight only the cause draft roller (for example, display in red and / or blinking). Good. The display unit 66 may display the determination result by displaying a graph or the like of the monitor values of the

draft rollers

16, 17, 19, and / or 20.

When it is determined that any of the

draft rollers

16, 17, 19, and 20 has a periodic abnormality, the unit controller 60 (control unit) replaces the result display in step S15 or in addition to the result display. May stop the operation of the spinning unit 2. Thus, when the unit controller 60 stops the operation of the spinning unit 2, the unit controller 60 confirms that the draft cradle is not closed in the proper position and / or the

draft rollers

16, 17, 19, and 20. You may display on the display part 66 that at least one is an exchange time. When the draft cradle is not closed at the regular position and at least one of the

draft rollers

16, 17, 19, and 20 is deviated from the regular position, the unit controller 60 causes the draft roller 16 to , 17, 19, and 20 can be determined to have a periodic abnormality.

In addition, after steps S13, S23, S33, and S43, the unit controller 60 may determine whether a periodic abnormality has occurred based on the yarn defect detection signal from the yarn clearer 52. For example, when the unit controller 60 compares the above determination result by the FFT operation with the signal from the yarn clearer 52 and can determine that periodic spots are occurring with the same period length, Detection can be performed with high accuracy.

Thus, according to the spinning machine 1 of the present embodiment, the torque and / or rotational speed of the motors 31 to 34 that drive the

draft rollers

16, 17, 19, and 20 that draft the fiber bundle are monitored, and the monitoring result Based on the above, it is possible to determine whether or not the

draft rollers

16, 17, 19, and 20 have a periodic abnormality. Thereby, periodic irregularities of the

draft rollers

16, 17, 19, and 20 can be detected, and periodic spots of the spun yarn 10 can be detected. Compared with detection of periodic spots using only a conventional clearer, the spinning machine 1 can detect periodic spots of the spun yarn 10 with high accuracy.

As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment.

In the above embodiment, the spinning machine 1 (pneumatic spinning machine) does not include the delivery roller and the nip roller, but the spinning machine of the present invention is not limited thereto, and may include the delivery roller and the nip roller. The delivery roller and the nip roller are arranged, for example, on the downstream side of the spinning unit 9. The spun yarn 10 spun from the spinning unit 9 is nipped between the delivery roller and the nip roller, conveyed, and taken up by the take-up device 13. Note that periodic abnormality of the delivery roller and / or nip roller may be determined by monitoring the torque and / or rotational speed of the motor that rotationally drives the delivery roller.

The spinning machine is not limited to the pneumatic spinning machine, and may be another spinning machine equipped with a draft device. Examples of spinning machines include a ring spinning machine and a drawing machine.

The motor monitor unit (monitoring unit) may monitor at least one of the motor torque and the rotational speed. For example, when the motor is a brushless motor, current detection for monitoring torque is generally not performed and only speed detection is performed. In this case, the rotation speed is monitored.

In the above embodiment, in the detection of periodic spots, determination is performed using both the monitoring result by the motor monitor unit 63 and the detection result by the yarn clearer 52. However, periodic spots may be detected based only on the result of monitoring by the motor monitor unit 63.

In the above embodiment, when the yarn defect is detected and splicing is performed, the spun yarn 10 is cut by stopping the injection of the compressed air from the swirling airflow generating nozzle of the spinning unit 9. The spun yarn 10 may be cut by a method. For example, the spun yarn 10 can be cut using a cutter disposed between the spinning unit 9 and the yarn clearer 52.

In the pneumatic spinning machine described above, the yarn path is arranged from the upper side to the lower side in the machine table height direction, but the present invention is not limited to this, and the yarn path may be arranged from the lower side to the upper side. .

The spinning unit 9 preferably includes a needle (needle-like member) for preventing the internal twist from propagating to the front roller 20, but the needle may be omitted.

The pneumatic spinning machine may have a configuration (line shaft) in which the bottom roller of the draft device and the traverse mechanism of the winding device are driven in common by the plurality of spinning units 2. In the pneumatic spinning machine, a draft device and / or a winding device may be provided independently in each winding unit.

The spinning machine 1 of the above embodiment includes a motor control unit 30 that controls the motors 31 to 34 and a unit controller 60 that controls the spinning unit 2, but the unit controller 60 controls the motor. May be implemented. The motor control unit 30 may determine a periodic abnormality as the determination unit.

The spinning machine 1 of the above embodiment includes a unit controller 60 that individually controls each spinning unit 2. However, a unit controller 60 that controls a predetermined number of spinning units 2 may be provided for each predetermined number of spinning units 2.

In the above embodiment, the unit controller 60 constantly monitors at least one of the torque and the rotational speed of the motors 31 to 34 while the package 45 is being wound. However, it is also possible to monitor only for a specific time, and to determine the periodic abnormality of the

draft rollers

16, 17, 19, and 20 based on the result of this monitoring. The spinning machine 1 has a trial spinning mode, and monitors at least one of the torque and the rotational speed of the motors 31 to 34 during execution of the trial spinning mode. Based on the result of this monitoring, the

draft rollers

16, 17, 19,. And 20 periodic abnormalities may be determined. However, in order to maintain the operational efficiency of the spinning machine 1, it is desirable to perform monitoring during winding of the package 45.

In the above embodiment, the unit controller 60 monitors all torques and / or rotational speeds of the motors 31 to 34 that drive the

draft rollers

16, 17, 19, and 20 and relates to all the motors 31 to 34. The presence or absence of periodic spots is determined. However, the present invention is not limited to this embodiment, and the unit controller 60 monitors, for example, at least one of the torque and rotational speed of a specific motor among the motors 31 to 34, and is caused by a periodic abnormality of the specific motor. The presence or absence of periodic spots may be determined.

The spinning machine 1 of the above-described embodiment includes a plurality of unit controllers 60, and the unit controller 60 controls each spinning unit 2. However, the control of the plurality of spinning units 2 is performed in a central control unit. May be.

The present invention can be applied to a winding device in the same manner as the spinning machine 1 described above. Examples of the winding device of the present invention include a winding device for a spinning machine and a winding device for an automatic winder.

Next, an automatic winder according to a third embodiment of the present invention will be described with reference to the drawings. The automatic winder of this embodiment shown in FIG. 6 includes a plurality of winder units 110 and a central control unit (not shown) that controls the automatic winder. In addition, the description similar to the said embodiment is abbreviate | omitted.

The winder unit 110 winds the spun yarn 120 unwound from the yarn feeding bobbin 121 while winding it around the winding bobbin 122 to form a package 130 having a predetermined length and a predetermined shape.

The winder unit 110 includes a winding unit main body 116 and a unit controller 160. The winding unit main body 116 includes a yarn supplying section 112, a tension applying device 113, a splicer device 114 (yarn joining device), a yarn clearer 115, and a winding device, which are arranged in the following order along the yarn traveling direction. 117.

The yarn supplying unit 111 supplies the spun yarn 120 that is wound around the package 130. The yarn feeding unit 111 includes a unwinding assisting device 112. The unwinding assisting device 112 assists the unwinding of the spun yarn 120 from the yarn supplying bobbin 121 by lowering the regulating member 140 covering the core pipe in conjunction with the unwinding of the spun yarn 120 from the yarn supplying bobbin 121. To do.

The tension applying device 113 applies a predetermined tension to the spun yarn 120 wound around the package 130. As the tension applying device 113, for example, a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth can be used. The tension applying device 113 can apply a certain tension to the wound spun yarn 120 to improve the quality of the package 130. As the tension applying device 113, for example, a disc type device can be employed in addition to the gate type device.

The yarn clearer 115 monitors the quality of the spun yarn 120 wound around the package 130. When the yarn clearer 115 detects a yarn defect, the spun yarn 120 is cut and the yarn defect is removed. The yarn clearer 115 includes a clearer head 149 having a sensor (not shown) for detecting the thickness of the spun yarn 120. The yarn clearer 115 detects a yarn defect by monitoring a yarn thickness signal from a sensor. In the vicinity of the clearer head 149, a cutter (not shown) is provided for cutting the spun yarn 120 immediately when the yarn clearer 15 detects a yarn defect.

The splicer device 114 is used for the spun yarn 120 (lower yarn) on the yarn supplying bobbin 121 side when the yarn clearer 115 detects a yarn defect, when the yarn is cut, or when the yarn breaker is unwound from the yarn supplying bobbin 121. The spun yarn 120 (upper yarn) on the package 130 side is spliced.

Below the splicer device 114 (on the yarn feeding bobbin 121 side), a lower yarn guide pipe 125 that captures and guides the lower yarn on the yarn feeding bobbin 121 side to the splicer device 114 is provided. Above the splicer device 114 (on the package 130 side), an upper yarn guide pipe 126 that captures the upper yarn on the package 130 side and guides it to the splicer device 114 is provided.

The lower thread guide pipe 125 and the upper thread guide pipe 126 are rotatable about

shafts

133 and 135, respectively. A suction port 132 is formed at the tip of the lower thread guide pipe 125. A suction mouth 134 is provided at the tip of the upper thread guide pipe 126. Appropriate negative pressure sources (not shown) are connected to the lower thread guide pipe 125 and the upper thread guide pipe 126, respectively. A suction flow is generated by the negative pressure source, the suction port 132 sucks and captures the upper thread, and the suction mouse 134 sucks and captures the lower thread.

The winding device 117 rotates the cradle 123 that rotatably holds the package 130, the winding drum 124 (rotating drum, rotating body) that rotates the package 130 in contact with the package 130, and the winding drum 124. A motor 153 and a motor control unit 154 that controls the rotation of the motor 153 are provided. The winding drum 124 has a traverse groove 127 (traverse groove) for traversing the spun yarn 120 with respect to the package 130. Thereby, the winder unit 110 can wind the spun yarn 120 around the package 130 while traversing.

The motor control unit 154 is electrically connected to the motor 153. The motor control unit 154 detects a load torque that acts on the motor 153. The motor control unit 154 detects the rotation speed of the output shaft of the motor 153. The motor controller 154 only needs to be able to detect at least one of torque and rotational speed. The motor control unit 154 outputs data related to the torque and / or rotational speed of the motor 154 to the unit controller 160.

The unit controller 160 can detect a periodic abnormality of the winding drum 124. The unit controller (control unit) 160 includes a CPU that performs arithmetic processing, a ROM and a RAM that function as a storage unit, an input signal circuit, an output signal circuit, a power supply circuit, and the like. In the unit controller 160, the motor monitor unit 163 (monitoring unit) and the determination unit 164 are realized by executing the program stored in the storage unit.

The motor monitor unit 163 is electrically connected to the motor control unit 154, and information (monitor value) regarding the torque of the motor 153 output from the motor control unit 154 and / or information (monitor value) regarding the rotation speed of the motor 153. To get. The motor monitor unit 163 functions as a monitoring unit that monitors at least one of the torque and the rotational speed of the motor 153.

The determination unit 164 determines whether or not the winding drum 124 has a periodic abnormality by performing frequency analysis on a value (monitor value) related to at least one of the torque and rotation speed of the motor 153. The determination unit 164 performs, for example, a fast Fourier transform (FFT) operation as the frequency analysis, and converts the time axis into a frequency. The determination unit 164 may determine the periodic abnormality of the winding drum 124 by analyzing the torque and / or the rotational speed using other methods.

The automatic winder includes a display unit 66 (notification unit) that displays a determination result by the determination unit 164. The display unit 66 is electrically connected to the unit controller 160 and can display information regarding the presence or absence of periodic abnormalities according to a signal from the unit controller 160. The operator can easily confirm the presence or absence of periodic abnormality by looking at the display content of the display unit 66. The display unit 66 can display other information in addition to the display content related to the abnormality of the winding drum 124.

According to the automatic winder winding device 117, by monitoring at least one of the torque and the rotational speed of the motor 153, a periodic abnormality of the motor 153 is determined, and a periodic abnormality of the winding drum 124 is detected. can do. Thereby, for example, abnormalities such as eccentricity of the package 130 can be detected at an early stage.

The winding device 117 may include a traverse mechanism that is independent of the winding drum 124, such as the winding device 13 of the spinning machine 1, instead of the winding drum 124 in which the traverse groove 127 is formed. . In this case, the monitoring unit of the winding device monitors at least one of the torque and the rotational speed of the motor that rotationally drives the winding drum in which the traverse groove is not formed.

When the automatic winder includes a winding drum in which no traverse groove is formed, the package 130 may be directly driven to rotate instead of the winding drum. In this case, the monitoring unit monitors at least one of the torque and the rotation speed of the motor that directly rotates the package 130.

In the above embodiment, the application to the spinning machine or the winding device of the present invention has been described. However, the present invention is not limited to this, and other textile machines may be used. In short, in a textile machine equipped with a motor for driving the rotating body, it is possible to determine a periodic abnormality of the rotating body by monitoring at least one of the load torque acting on the motor and the rotational speed of the motor. That's fine.

Such a textile machine includes a rotating body for conveying a fiber bundle, a motor that rotationally drives the rotating body, a monitoring unit that monitors at least one of torque and rotation speed of the motor, and monitoring by the monitoring unit. And a determination unit that determines a periodic abnormality of the rotating body based on the result. The determination unit of the textile machine may determine a periodic abnormality of the rotating body by performing frequency analysis on a value related to at least one of torque and rotation speed, which is a result of monitoring by the monitoring unit. The textile machine may further include a notification unit that notifies information related to a result of monitoring by the monitoring unit. According to such a textile machine, by monitoring at least one of the torque and the rotational speed of the motor, it is determined whether there is a periodic abnormality of the rotating body, and the periodic abnormality of the fiber bundle processed by the rotating body. Can be detected.

The spinning machine of the present invention can detect a periodic abnormality of the draft roller and can improve detection accuracy. The winding device of the present invention can detect a periodic abnormality of the rotating drum and can improve detection accuracy. The textile machine of the present invention can detect periodic abnormalities of the rotating body and can improve detection accuracy.

DESCRIPTION OF SYMBOLS 1 ... Spinning machine (spinning apparatus, textile machine), 2 ... Spinning unit (spinning machine), 7 ... Draft apparatus, 8 ... Fiber bundle, 9 ... Spinning part, 10 ... Spinning yarn, 16 ... Back roller (draft roller), 17 ... Third roller (draft roller), 18 ... Apron belt, 19 ... Second roller (draft roller), 20 ... Front roller, 30, 154 ... Motor controller, 31-34 ... Motor, 52 ... Yarn clearer, 60, 60B , 160 ... Unit controller, 63, 163 ... Motor monitor part (monitoring part), 64 ... Motor periodic unevenness determination part (determination part), 65 ... Periodic unevenness determination part (determination part), 66 ... Display part (notification part), DESCRIPTION OF SYMBOLS 110 ... Automatic winder (textile machine), 117 ... Winding device of automatic winder, 124 ... Winding drum (rotating drum), 130 ... Package, 164 ... Determination part.

Claims

A draft roller for drafting fiber bundles;
A motor for rotationally driving the draft roller;
A monitoring unit for monitoring at least one of torque and rotational speed of the motor;
A spinning machine comprising: a periodic unevenness determination unit that determines a periodic abnormality of the draft roller that occurs as periodic unevenness in the fiber bundle based on a result of monitoring by the monitoring unit.
The periodic unevenness determination unit determines a periodic abnormality of the draft roller by performing frequency analysis on a value related to at least one of the torque and the rotation speed, which is a result of monitoring by the monitoring unit. The spinning machine according to claim 1.
A plurality of the draft rollers arranged along the conveying direction of the fiber bundle;
A plurality of the motors individually driving the plurality of draft rollers;
The spinning according to claim 1 or 2, wherein the periodic unevenness determination unit determines which of the plurality of motors has a periodic abnormality based on a result of monitoring by the monitoring unit. Machine.
Further comprising a spot detection unit that is arranged on the downstream side of the draft roller and detects spots of the fiber bundle drafted by the draft roller;
The periodic unevenness determination unit determines a periodic abnormality of the draft roller based on the monitoring result by the monitoring unit and the detection result by the unevenness detection unit, and based on the determination result, the fiber The spinning machine according to any one of claims 1 to 3, wherein periodic spots of the bundle are detected.
The spinning machine according to any one of claims 1 to 4, further comprising a notification unit that notifies information related to a result of monitoring by the monitoring unit.
An air spinning device for spinning the fiber bundle drafted by the draft roller by a swirling flow;
A winding device for winding the fiber bundle spun from the pneumatic spinning device into a package,
The spinning machine according to any one of claims 1 to 5, wherein the periodic unevenness determination unit determines a periodic abnormality of the draft roller during winding of the package by the winding device.
A rotating drum for rotating in contact with the winding package and winding the yarn in the winding package;
A motor for rotating the rotating drum;
A monitoring unit for monitoring at least one of torque and rotational speed of the motor;
A winding device comprising: a determination unit that determines a periodic abnormality of the rotating drum based on a result of monitoring by the monitoring unit.
The determination unit is configured to determine a periodic abnormality of the rotating drum by performing frequency analysis on a value related to at least one of the torque and the rotation speed, which is a result of monitoring by the monitoring unit. The winding device according to 7.
The winding device according to claim 7 or 8, further comprising a notification unit that notifies information related to a result of monitoring by the monitoring unit.
A rotating body for conveying the fiber bundle;
A motor that rotationally drives the rotating body;
A monitoring unit for monitoring at least one of torque and rotational speed of the motor;
A textile machine comprising: a determination unit that determines a periodic abnormality of the rotating body based on a result of monitoring by the monitoring unit.
The said determination part determines the periodic abnormality of the said rotary body by frequency-analyzing the value regarding at least one of the said torque and the said rotational speed which are the results of the monitoring by the said monitoring part. 10. The textile machine according to 10.
The textile machine according to claim 10 or 11, further comprising a notifying unit for notifying information on a result of monitoring by the monitoring unit.