TW201938867A - Draw texturing machine - Google Patents

Abstract

Rotation of a pin is swiftly stopped at the time of yarn breakage in a draw texturing machine including a pin-type twisting unit. A yarn breakage sensor 26 configured to detect yarn breakage and a control unit 30 configured to control a motor 54 of a pin-type twisting unit 15 are provided. When yarn breakage is detected by the yarn breakage sensor 26, the control unit 30 stops the motor 54.

Description

False twist processing machine

The present invention relates to a false twisting machine equipped with a pin type twisting device.

For example, Patent Document 1 discloses a needle-type twisting device (in Patent Document 1 is a needle twister) that twists a yarn traveling inside a rotating needle (the small rotor in Patent Document 1). Spool type false twisting device). In this needle-type twisting device, rollers are attached to the two rotation shafts, respectively, and the cylindrical needle spindle is held by a magnet in a state of being in contact with the peripheral surface of each roller. When at least one of the rotation shafts is rotationally driven by a motor, the needle spindle in contact with the roller rotates around the shaft, and the yarn traveling inside the needle spindle is twisted.
[Prior technical literature]
[Patent Literature]

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-69763

[Problems to be Solved by the Invention]

In such a needle-type twisting device, even when the yarn breakage occurs and the package cannot be produced, the needle continues to rotate until the operator stops the rotation of the needle. Therefore, there is a problem that the power is consumed in vain, or the components constituting the needle-type twisting device are worn and the life is shortened. In addition, since the needle spindle is held only by the magnet, when the needle spindle continues to rotate in a state where the thread is broken, the needle spindle may fall off for some reason and fall. Due to the drop of the needle, there are also problems such as damage to other devices or loss of the needle.

In view of the above problems, an object of the present invention is to quickly stop the rotation of a needle spindle when a yarn break occurs in a false twist processing machine including the needle spindle type twisting device.

[Means to solve the problem]

The present invention is a false twisting machine including a needle-type twisting device having a cylindrical shape held in contact with the peripheral surfaces of rollers respectively mounted on two rotary shafts. The needle spindle is driven by a motor to rotate at least one of the two rotation shafts, thereby rotating the needle spindle to twist the yarn traveling inside the needle spindle, and the false twist processing machine. It is characterized by comprising: a wire break sensor for detecting a wire break; and a control section for controlling the operation of the motor, and when the wire break sensor detects a wire break, the control section causes the motor to stop.

In the present invention, when a wire break is detected by the wire break sensor, the control section automatically stops the motor of the needle type twisting device. Therefore, without waiting for the operator to stop the motor, it is possible to quickly stop the rotation of the needle bar when a wire break occurs.

The present invention may further include: a tension sensor for detecting the tension of the thread; and a cutter for cutting the thread when the tension of the thread detected by the tension sensor exceeds a predetermined upper limit. When the value is less than a predetermined lower limit value, the control unit causes the cutter to cut the wire and stops the motor.

When the tension of the yarn becomes too large or too small, there is a high possibility that the broken yarn or the quality of the package deteriorates. Therefore, when the tension of the yarn exceeds a predetermined upper limit value or is lower than a lower limit value, the yarn is cut by a cutter to prevent accidental wire breakage and produce a package of low quality. Furthermore, at this time, by stopping the motor of the needle-type twisting device, it is possible to prevent the needle spindle from continuously rotating in a state that the yarn is cut.

In the present invention, when the tension of the yarn detected by the tension sensor exceeds the upper limit value or is lower than the lower limit value, the control unit may send the cutter to the motor after cutting the yarn. Stop instruction.

From the viewpoint of preventing the needle spindle from continuously rotating in vain, it is better to stop the motor as soon as possible. However, if the motor starts to decelerate before the thread is cut by the cutter, the balance between the speed of travel of the thread and the rotation speed of the spindle may collapse, and the needle may fall off due to the unstable behavior of the thread. . Therefore, as described above, the stop command is sent to the motor after the thread is cut by the cutter, so that the motor does not start to decelerate before the thread is cut, and the needle spindle can be suppressed from falling off.

In the present invention, the absolute value of the deceleration of the needle when the needle is stopped may be larger than the absolute value of the acceleration of the needle when the needle is accelerated.

In this way, by making the deceleration of the needle relatively large, the rotation of the needle can be stopped quickly, and the time during which the needle continuously rotates in a broken state in a broken state can be shortened.

The present invention may further include a notification unit capable of switching to a notification state in which predetermined information is notified to an operator, and the control unit may switch the notification unit to the notification state when the motor is stopped.

In this way, the operator can easily recognize that a wire break has occurred and the wire has been cut, and can quickly start work to restart the winding of the wire.

In the present invention, a plurality of processing units may be arranged in a row, and the processing units are provided with a thread passage so as to pass the needle-type twisting device and the wire break sensor. The sensor detects that the motor of the needle-type twisting device of the processing unit in which the yarn is broken is stopped.

In a false twisting machine in which a plurality of processing units (referred to as spindles) are arranged in a row, a conventional configuration is such that a common tangential ingot belt is wound around a drive shaft of a needle-type twisting device of each processing unit ( tangential belt), and each needle spindle type twisting device is driven together. Therefore, the tangential spindle belt does not stop due to a wire break in a processing unit, and an operator needs to rush to the processing unit to manually separate the drive shaft of the needle-type twisting device from the tangential spindle belt. operating. In this regard, according to the present invention, when a wire break occurs, the control unit automatically stops the motor of the needle type twisting device of the processing unit, so that the burden on the operator can be reduced, and the needle The rotation stops reliably and quickly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Overall structure of false twist processing machine)
FIG. 1 is a schematic diagram showing the configuration of a false twist processing machine 1 according to this embodiment. As shown in FIG. 1, the false twist processing machine 1 is configured to include: a yarn supplying unit 2 that supplies a plurality of yarns Y; a processing unit 3 that performs false twist processing on the plurality of yarns Y supplied from the yarn supplying unit 2; The section 4 winds up the plurality of yarns Y subjected to the false twist processing by the processing section 3 to form a plurality of packages P.

The yarn supplying section 2 includes a bobbin holder 10 holding a plurality of yarn supplying packages Q, and supplies a plurality of yarns Y to the processing section 3. The processing section 3 is configured such that, from the upstream side in the direction of travel of the yarn, along the yarn passage, the first feeding roller 11, the anti-twist guide 12, the first heating device 13, the cooling device 14, and the spindle A pin type twisting device 15, a second wire feeding roller 16, a winding device 17, a third wire feeding roller 18, a second heating device 19, and a fourth wire feeding roller 20. The winding unit 4 winds a plurality of yarns Y subjected to false twist processing by the processing unit 3 by a plurality of winding devices 21 to form a plurality of packages P.

The false twist processing machine 1 includes a main table 5 and a winding body 6 which are arranged to face each other at intervals in the left-right direction (hereinafter, referred to as a table width direction) in FIG. 1. The main table 5 and the take-up body 6 are extended in a direction (hereinafter, referred to as a table length direction) perpendicular to the paper surface in FIG. 1. The upper portion of the main table 5 and the upper portion of the take-up body 6 are connected by a support frame 7. Each device constituting the processing section 3 is mainly mounted on the main table 5 and the support frame 7. The working space 8 is formed by the main table 5, the winding body 6, and the support frame 7. In other words, the main frame 5, the take-up body 6, and the support frame 7 are arranged so as to surround the work space 8, and the yarn Y mainly travels around the work space 8. The operator performs various tasks such as wire hanging (guide wire) in the work space 8.

The false twist processing machine 1 is a unit unit called a span including a set of a main table 5 and a winding body 6 which are arranged to face each other. In one span, a plurality of processing units (also referred to as spindles) are arranged in a line in the lengthwise direction of the machine, and the processing units are provided with a wire channel so as to pass through each device constituting the processing unit 3. Accordingly, it is possible to simultaneously perform false twist processing on a plurality of yarns Y running in a state of being aligned in the machine length direction in one span. The false twist processing machine 1 is structured so that the span is symmetrically arranged in the width direction of the machine centering on the main machine table 5 (the main machine table 5 is common in the left and right spans), and more Spans. In FIG. 1, illustration of the left span is omitted.

(Processing Department)
The first wire feed roller 11 is a roller that feeds the yarn Y supplied from the wire supply unit 2 toward the first heating device 13. The first wire feed roller 11 is disposed on the upper portion of the take-up body 6. The first feeding roller 11 includes a driving roller and a driven roller, and drives the driving roller to rotate the driving roller in a state where the yarn Y is held between the driving roller and the driven roller, thereby conveying the yarn Y toward the downstream side of the yarn traveling direction. In one span, each driving roller is connected to a common driving shaft. Each driven roller is, for example, a lever operation performed by an operator, and can be in a state in contact with a corresponding driving roller (a state in which the yarn Y is held while the yarn Y is conveyed) and a state in which it is separated from the corresponding driving roller (can be suspended Wire status). The second wire feeding roller 16, the third wire feeding roller 18, and the fourth wire feeding roller 20 have the same configuration.

The twist stop yarn guide 12 prevents the twist imparted to the yarn Y by the needle-type twisting device 15 from being propagated to the upstream side of the yarn direction than the twist lock yarn guide 12. The twist preventing yarn guide 12 is arranged between the first yarn supplying roller 11 and the first heating device 13 in the yarn traveling direction. The twist-stop yarn guide 12 is configured to be able to hang the wire along the guide rail 22 extending in the up-down direction at the lower end portion of the guide rail 22 (dashed line in FIG. 1) and the upper end portion of the guide rail 22 (the actual position in FIG. 1 Line). Specifically, the twist stop yarn guide 12 is attached to a component called a shifter (not shown), and is configured to move the shifter along the guide rail 22 by a cylinder (not shown), thereby stopping the twister. The twist guide 12 is movable. For details, refer to, for example, Japanese Patent Application Laid-Open No. 2016-27218.

The first heating device 13 is a device for heating the yarn Y after being twisted by the pin type twisting device 15. The first heating device 13 is attached to an upper end portion of the support frame 7.

The cooling device 14 is a device for cooling the yarn Y heated by the first heating device 13. The cooling device 14 is arranged between the first heating device 13 and the needle-type twisting device 15 in the direction of travel of the yarn.

The needle-pin twisting device 15 is a device for twisting the yarn Y. The needle-type twisting device 15 is arranged on the upper part of the main frame 5. The details of the pin type twisting device 15 will be described later.

The second wire feeding roller 16 is a roller that transports the yarn Y twisted by the pin type twisting device 15 toward the winding device 17. The second wire feeding roller 16 is arranged below the needle-type twisting device 15 in the main table 5. The feeding speed of the yarn Y by the second feeding roller 16 is faster than the feeding speed of the yarn Y by the first feeding roller 11. Therefore, the yarn Y is stretched between the first and second feeding rollers 11 and 16.

The entanglement device 17 is a device that imparts entanglement by spraying air on the yarn Y. The winding device 17 is disposed below the second wire feeding roller 16 in the main frame 5.

The third wire feeding roller 18 is a roller that transports the yarn Y that has been intertwined by the interlacing device 17 toward the second heating device 19. The third wire feeding roller 18 is arranged below the winding device 17 in the main table 5. The feeding speed of the third yarn feeding roller 18 to the yarn Y is slower than the feeding speed of the second yarn feeding roller 16 to the yarn Y. Therefore, the yarn Y is loosened between the second yarn feeding roller 16 and the third yarn feeding roller 18.

The second heating device 19 is a device for heating the yarn Y conveyed from the third feeding roller 18. The second heating device 19 is disposed below the third wire feeding roller 18 in the main table 5.

The fourth wire feeding roller 20 is a roller that transports the yarn Y heat-treated by the second heating device 19 toward the winding device 21. The fourth wire feeding roller 20 is disposed below the winding body 6. The conveying speed of the fourth yarn feeding roller 20 to the yarn Y is slower than the conveying speed of the third yarn feeding roller 18 to the yarn Y. Therefore, the yarn Y is loosened between the third wire feeding roller 18 and the fourth wire feeding roller 20.

In the processing unit 3 configured as described above, the yarn Y stretched between the first and second feeding rollers 11 and 16 is twisted by a needle-type twisting device 15. Although the twist formed by the needle-type twisting device 15 propagates to the twist-stop yarn guide 12, it does not propagate further upstream than the twist-stop yarn guide 12 in the direction of travel of the yarn. The yarn Y thus stretched and imparted with twist is heated by the first heating device 13 and then cooled by the cooling device 14 to be thermally fixed. The yarn Y passing through the needle-pin twisting device 15 is untwisted before reaching the second yarn feeding roller 16. However, since the twist of the yarn Y is heat-fixed as described above, each filament maintains a wave-like false twist state. Thereafter, the yarn Y which has been interlaced by the interlacing device 17 and thermally fixed by the second heating device 19 is taken up by the winding device 21.

In the false twist processing machine 1 of the present embodiment, a cutter 23, a tension sensor 24, a suction pipe introducer 25, and a wire break sensor 26 are further provided on the wire passage. The cutter 23 is disposed on the upstream side in the yarn traveling direction of the first yarn feeding roller 11 and is used to cut the yarn Y. The tension sensor 24 is disposed on the downstream side of the yarn traveling direction of the needle-type twisting device 15 and measures the tension of the yarn Y after being twisted. The suction pipe introducer 25 is disposed at a position lower than the third wire feeding roller 18 of the main table 5 and is used to temporarily attract and hold the yarn Y during the wire hanging operation. The wire break sensor 26 is disposed on the downstream side in the wire traveling direction of the fourth wire feeding roller 20, and detects the wire break by detecting the presence or absence of the wire Y. The arrangement of these devices is not limited to the positions described here.

In addition, a notification unit 27 is provided on the upper portion of the main table 5. The notification unit 27 of the present embodiment is composed of a lamp, and can switch the lamp to a lighted or blinking state (notified state) in a predetermined case, thereby being able to notify the operator of predetermined information. However, the specific configuration of the notification unit 27 is not limited to this, and for example, predetermined information may be notified to the operator through sound information generated by a speaker, text information displayed on a screen, and the like.

(Electrical composition)
FIG. 2 is a block diagram showing the electrical configuration of the false twist processing machine 1. As shown in FIG. 2, the false twist processing machine 1 includes a control unit 30 that controls the operation of each device of a plurality of processing units. In FIG. 2, each device is illustrated only for the processing unit A due to paper surface restrictions, and detailed illustrations are omitted for the processing unit B and subsequent processes.

Output signals from the tension sensor 24 and the wire break sensor 26 are transmitted to the control unit 30. The control unit 30 controls the operations of the cutter 23, the notification unit 27, and the motor 54 of the needle-type twisting device 15 described later based on the output signals from the tension sensor 24 and the wire break sensor 26. The motor 54 is configured not only to control the operation by the control unit 30 but also to switch the operation of the motor 54 by an operator operating the operation unit 32. The control unit 30 is connected to a setting unit 31 for an operator to input various setting values to the control unit 30. The setting unit 31 can be configured by, for example, a touch panel, but other configurations such as a keyboard can also be adopted.

(Needle-type twisting device)
FIG. 3 is a schematic diagram showing the configuration of the needle-type twisting device 15, and FIG. 4 is a view of the needle-type twisting device 15 viewed from the IV direction in FIG. 3. The needle-type twisting device 15 is configured to twist the yarn Y traveling inside the needle 41 by rotating the cylindrical needle 41 around the shaft. In addition, in FIG. 3, the yarn Y goes down from the top. In addition, in FIG. 4, illustration of the guide member 52 is omitted.

The needle-type twisting device 15 includes two rotation shafts 43 and 44 rotatably supported by a support member 42 via a bearing (not shown). Two rollers 45 and 46 separated in the axial direction are attached to the rotation shaft 43. Two rollers 47 and 48 separated in the axial direction are attached to the rotation shaft 44. The roller 45 and the roller 47 are arranged at the same position in the axial direction, and as shown in FIG. 4, they are slightly separated from each other so as not to contact each other. The positional relationship between the roller 46 and the roller 48 is the same as the positional relationship between the roller 45 and the roller 47. The rotation shaft 43 is rotationally driven around the shaft by the power transmitted from the motor 54.

The needle 41 is a cylindrical member extending in the axial direction, and the yarn Y travels inside the needle 41. A magnetic portion 41 a facing the magnets 49 and 50 described later is formed at an intermediate portion in the axial direction of the needle bar 41. Further, a winding portion 41 b extending in the diameter direction is fixed to one end portion in the axial direction of the needle spindle 41 (the downstream end portion in the thread travelling direction). The yarn Y is wound around the winding portion 41b for one turn, and the needle yarn 41 is rotated around the shaft to twist the yarn Y.

A magnet 49 is disposed between the roller 45 and the roller 46 in the axial direction. Similarly, a magnet 50 is disposed between the roller 47 and the roller 48 in the axial direction. The magnets 49 and 50 are fixed to the support member 42 via a bracket 51 (see FIG. 4). When the magnetic part 41a of the needle 41 and the magnets 49 and 50 insert the needle 41 between the rollers 45 (46) and 47 (48) in a facing manner, as shown in FIG. 50 keep. Specifically, the needle spindle 41 is held by the rollers 45 (46) and 47 (48) and is in contact with the peripheral surface of the roller 45 (46) and the peripheral surface of the roller 47 (48). 50 keep. The needle bar 41 is not mechanically fixed to other components, and is held only by the magnetic force of the magnets 49 and 50 and the frictional force with the peripheral surface of each of the rollers 45 to 48.

A ring-shaped guide member 52 is disposed on the upstream side in the wire advancing direction of the needle bar 41. The guide member 52 is fixed to the support member 42 via a bracket (not shown). In addition, a tubular guide member 53 is disposed on the downstream side in the wire advancing direction of the needle bar 41. The guide member 53 is directly fixed to the support member 42. However, the shapes and fixing methods of the guide members 52 and 53 are not limited to those described here, and can be appropriately changed.

As shown in FIG. 4, when the roller 45 is rotated by rotationally driving the rotation shaft 43, the needle bar 41 in contact with the peripheral surface of the roller 45 is driven to rotate in a direction opposite to the roller 45. Further, the roller 47 that is in contact with the peripheral surface of the needle bar 41 is driven to rotate in the same direction as the roller 45. The needle spindle 41 is rotationally driven around the axis to twist the yarn Y. At this time, as indicated by an arrow in FIG. 4, the rotation direction of the rotation shaft 43 that is rotationally driven by the power transmitted from the motor 54 is implemented so that the needle spindle 41 faces the rollers mounted on the two rotation shafts 43 and 44, respectively. The direction of pressing between 45 (46) and roller 47 (48) is preferred. Accordingly, the needle 41 can be prevented from moving away from the roller 45 (46), and the power of the motor 54 can be reliably transmitted to the needle 41 via the roller 45 (46).

However, in the twist imparted to the yarn Y, there are S twist and Z twist in which twist directions are opposite to each other. When the direction of twisting is switched, the transmission destination of the power of the motor 54 may be switched from the rotation shaft 43 to the rotation shaft 44. For example, when the power from the motor 54 is transmitted through a belt, the belt wound on the rotating shaft 43 may be switched to be wound on the rotating shaft 44. In addition, although the needle spindle 41 may be easily separated from the roller 45 (46), the motor 54 may be a motor that can rotate forward and backward, and the rotation direction of the rotation shafts 43 and 44 may be changed to change The direction of rotation of the needle spindle 41 switches the direction of twisting of the yarn Y.

(Motor stop control)
In the false twist processing machine 1 configured as described above, in the production of the package P (during the winding of the yarn Y), a broken wire may be generated in a certain processing unit. When the motor 54 (needle 41) of the needle-type twisting device 15 of this processing unit continues to rotate after a wire break occurs, there is a fear that power may be consumed in vain or each of the components of the needle-type twisting device 15 There is a risk that parts will wear out and life will be shortened. The needle 41 is held only by the magnets 49 and 50. Therefore, when the needle 41 continues to rotate in a state where the yarn Y is broken, the needle 41 may fall off and fall for some reason. If the needle 41 is dropped, there is a possibility that the other devices may be damaged or the needle 41 may be lost.

Therefore, in this embodiment, the spindle type twisting device 15 of each processing unit can be independently driven by a motor 54, and the motor of each needle type twisting device 15 can be performed by the control unit 30. 54 Automatic stop control. FIG. 5 is a flowchart showing the motor control of the needle-type twisting device 15 during package production. The control unit 30 performs the control shown in FIG. 5 on the needle-type twisting device 15 of each processing unit.

In the production of the package P, when a wire break occurs in a certain processing unit (YES in step S1), the wire break sensor 26 detects the situation and outputs the wire break sensor 26 to the control unit 30. Broken wire signal. When the control unit 30 receives the wire break signal, it sends a stop command to the motor 54 of the spindle type twisting device 15 of the processing unit to stop the rotation of the motor 54 (the spindle 41) (step S2). The control unit 30 switches the notification unit 27 to the notification state when the motor 54 is stopped. Thereby, the operator can recognize that a wire break has occurred and the rotation of the needle 41 has stopped.

The acceleration and deceleration of the needle bar 41 can be freely set by the operator via the setting unit 31. In this embodiment, the deceleration of the needle 41 when the needle 41 is stopped is set to -80,000 rpm / s, and the acceleration of the needle 41 when the needle 41 is accelerated is set to 14,000 rpm / s. However, the deceleration and acceleration of the needle spindle 41 can be appropriately changed.

However, when the tension of the yarn Y becomes too large or too small, the possibility of a broken wire or deterioration in the quality of the package P becomes high. Therefore, even in the case where a wire break does not occur in a certain processing unit (No in step S1), when the tension detected by the tension sensor 24 exceeds a predetermined upper limit value or is smaller than a lower limit value (in step S3) (Yes)), the control unit 30 operates the cutter 23 of the processing unit to cut the yarn Y (step S4). Thereby, it is possible to prevent accidental wire breakage or to produce a package P of low quality. The above-mentioned upper limit value and lower limit value can be freely set by the operator via the setting unit 31.

When the needle spindle 41 of the needle type twisting device 15 continues to rotate after the yarn Y is cut, as in the case where a yarn break occurs, various problems occur as described above. Therefore, immediately after the cutter 23 cuts the yarn Y, the control unit 30 sends a stop command to the motor 54 to stop the rotation of the motor 54 (needle 41) (step S5). The control unit 30 switches the notification unit 27 to the notification state when the motor 54 is stopped. This allows the operator to recognize that the yarn Y is cut and the rotation of the needle 41 has stopped.

In a certain processing unit, while the yarn breakage did not occur, and the tension of the yarn Y converged within the allowable range between the lower limit value and the upper limit value, the winding section 4 was wound up by the processing section 3. The false twisted yarn Y forms a high-quality package P.

(effect)
In the present embodiment, when a wire break is detected by the wire break sensor 26, the control unit 30 automatically stops the motor 54 of the needle type twisting device 15. Therefore, without waiting for the operator to stop the motor 54, it is possible to quickly stop the rotation of the needle bar 41 when a wire break occurs.

In the present embodiment, when the tension of the yarn Y detected by the tension sensor 24 exceeds a predetermined upper limit value or is smaller than a predetermined lower limit value, the control unit 30 causes the cutter 23 to cut the yarn Y and causes the needle to The motor 54 of the spindle twisting device 15 is stopped. When the tension of the yarn Y becomes too large or too small, the possibility of a broken wire or deterioration of the quality of the package P becomes high. Therefore, when the tension of the yarn Y exceeds a predetermined upper limit value or is lower than the lower limit value, the cutter Y is cut by the cutter 23, thereby suppressing the occurrence of an unexpected wire break and producing a low-quality package P. In addition, at this time, by stopping the motor 54 of the needle-type twisting device 15, it is possible to prevent the needle 41 from continuously rotating in a state where the yarn Y is cut.

In the present embodiment, when the tension of the yarn Y detected by the tension sensor 24 exceeds the upper limit value or is lower than the lower limit value, the control unit 30 causes the cutter 23 to cut the yarn Y, and then moves to the needle spindle type. The motor 54 of the twisting device 15 sends a stop command. From the viewpoint of preventing the needle spindle 41 from continuously rotating in vain, it is preferable to stop the motor 54 as soon as possible. However, if the motor 54 starts to decelerate before the yarn Y is cut by the cutter 23, the balance between the traveling speed of the yarn Y and the rotation speed of the needle spindle 41 may collapse, due to the instability of the yarn Y. This action causes the needle bar 41 to fall off. Therefore, as described above, after the wire Y is cut by the cutter 23, a stop command is sent to the motor 54 so that the motor 54 does not start to decelerate before the wire Y is cut, and the needle spindle 41 can be suppressed. Fall off.

In this embodiment, the absolute value of the deceleration of the needle 41 when the needle 41 of the needle type twisting device 15 is stopped is larger than the absolute value of the acceleration of the needle 41 when the needle 41 is accelerated. In this way, by making the deceleration of the needle 41 relatively large, the rotation of the needle 41 can be stopped quickly, and the time during which the needle 41 continues to spin in a broken state can be shortened.

This embodiment further includes a notification unit 27 capable of switching to a notification state of notifying the operator of predetermined information, and the control unit 30 switches the notification unit 27 when the motor 54 of the needle-type twisting device 15 is stopped. The notification state (lighting state or flashing state of the lamp). In this way, the operator can easily recognize that the wire break has occurred and the wire Y has been cut, and can quickly start work for restarting the winding of the wire Y.

In this embodiment, a plurality of processing units are arranged in a row, and the processing unit has a thread passage formed by the needle-type twisting device 15 and the wire break sensor 26. The control unit 30 detects the wire break sensor 26. The motor 54 of the needle type twisting device 15 to the processing unit for the broken wire is stopped. In the false twist processing machine 1 in which a plurality of processing units are arranged in a line, a conventional configuration is such that a common tangential ingot tape is wound around a drive shaft of a needle type twisting device 15 of each processing unit, and each needle type is twisted. The device 15 is driven together. Therefore, the tangential spindle belt does not stop due to a broken wire in a certain processing unit, but an operator needs to rush to the processing unit to manually separate the drive shaft of the needle-type twisting device 15 from the tangential spindle belt Operation. In this regard, according to the present embodiment, when a wire break occurs, the control unit 30 automatically stops the motor 54 of the needle-type twisting device 15 of the processing unit. Therefore, the burden on the operator can be reduced, and The rotation of the needle bar 41 is stopped reliably and quickly.

(Other embodiments)
Modifications in which various changes are made to the above-described embodiment will be described.

(1) In the above-mentioned embodiment, a wire break sensor 26 is provided separately from the tension sensor 24, and a wire break sensor is detected by the wire break sensor 26. However, since the broken wire can also be detected by the tension sensor 24, the broken wire sensor 26 may be omitted and the broken wire may be detected by the tension sensor 24. In this case, the tension sensor 24 can also function as a wire break sensor of the present invention.

(2) In the above embodiment, when the tension detected by the tension sensor 24 exceeds a predetermined upper limit value or lower than the lower limit value, the yarn Y is cut by the cutter 23 and then the needle-type twisting device The motor 54 of 15 sends a stop command. However, the stop command may be sent to the motor 54 at the same time as or immediately before the wire Y is cut by the cutter 23.

(3) In the above embodiment, the notification unit 27 is switched to the notification state when the wire is broken or when the wire is cut. However, it is not necessary to switch the notification unit 27 to the notification state when the wire is broken or cut, and the notification unit 27 may be omitted.

(4) In the embodiment described above, the notification unit 27 and the operation unit 32 are separately provided. However, the operation unit 32 may be configured to also function as the notification unit 27. For example, as in the above-described embodiment, when the operation unit 32 is constituted by a button, the button may be configured to be able to light up or blink, thereby causing it to function as a notification unit.

(4) In the needle type twisting device 15 of the above embodiment, only one of the two rotation shafts 43 and 44 is rotationally driven by the motor 54. However, a configuration may be adopted in which both of the two rotation shafts 43 and 44 are rotationally driven. In this case, it is possible to easily switch between the S twist and the Z twist without switching the winding of the belt or the like.

(5) Various changes may be made to each device constituting the false twist processing machine 1 of the above-mentioned embodiment. For example, in the above-mentioned embodiment, the twist-stop yarn guide 12 can be moved by a shifter, but the twist-stop yarn guide 12 can also be fixed (see Japanese Patent Application Laid-Open No. 2011-47074). It is a structure which moves a shifter manually. It is also possible to omit the cooling device 14 and the second heating device 19.

1‧‧‧False twist processing machine

15‧‧‧ Needle spindle twisting device

23‧‧‧Cutter

24‧‧‧ tension sensor

26‧‧‧ Broken wire sensor

27‧‧‧Notification Department

30‧‧‧Control Department

31‧‧‧Setting Department

32‧‧‧Operation Department

41‧‧‧ Needle

43, 44‧‧‧ rotating shaft

45 ~ 48‧‧‧roller

54‧‧‧Motor

A, B, C‧‧‧ processing units

Y‧‧‧silk thread

FIG. 1 is a schematic diagram showing a configuration of a false twist processing machine according to the present embodiment.

FIG. 2 is a block diagram showing an electrical configuration of a false twist processing machine.

FIG. 3 is a schematic diagram showing a configuration of a needle-type twisting device.

Fig. 4 is a view of a needle-type twisting device as viewed from the IV direction in Fig. 3.

Fig. 5 is a flowchart showing motor control of a needle-type twisting device in package production.

Claims (6)

A false twist processing machine includes a needle-type twisting device having a cylindrical needle-type spindle held in contact with the peripheral surfaces of rollers respectively mounted on two rotary shafts. The at least one of the two rotating shafts is rotationally driven by a motor to rotate the needle spindle and twist the yarn traveling inside the needle spindle. The false twist processing machine is characterized in that: ,have: Wire break sensor for detecting wire breaks; and A control unit for controlling the movement of the motor, When a wire break is detected by the wire break sensor, the control unit stops the motor. The false twist processing machine according to item 1 of the patent application scope, further comprising: A tension sensor for detecting the tension of the thread; and A cutter for cutting a silk thread, When the tension of the yarn detected by the tension sensor exceeds a predetermined upper limit value or is smaller than a predetermined lower limit value, the control unit causes the cutter to cut the yarn and stops the motor. The false twist processing machine according to item 2 of the scope of patent application, wherein: When the tension of the yarn detected by the tension sensor exceeds the upper limit value or is smaller than the lower limit value, the control unit sends a stop command to the motor after the cutter cuts the yarn. The false twist processing machine according to any one of claims 1 to 3, wherein: The absolute value of the deceleration of the needle when the needle is stopped is larger than the absolute value of the acceleration of the needle when the needle is accelerated. The false twist processing machine according to any one of claims 1 to 4, wherein: There is also a notification section that can switch to a notification status in which the operator is notified of predetermined information, When the control unit stops the motor, the control unit switches the notification unit to the notification state. The false twist processing machine according to any one of claims 1 to 5, wherein: A plurality of processing units are arranged in a row, and the processing unit has a thread channel formed by the above-mentioned needle-type twisting device and the above-mentioned wire break sensor. The control unit is configured to stop the motor of the needle-type twisting device of the processing unit in which the broken wire is detected by the broken wire sensor.