TW202237920A - False twisting machine - Google Patents

Abstract

The present invention provides a false twisting machine including a pin-type twisting device, wherein the detachment of a pin when a yarn is cut during false twisting is prevented. Provided is a false twisting machine 1 including a pin-type twisting device 15 that twists a yarn Y which is travelling inside a rotating pin 41, said false twisting machine 1 comprising: an operation unit 25 that is capable of carrying out an deceleration operation for decreasing the rotation speed of the pin 41 from a production rotation speed during yarn production; and a cutter 23 that cuts the yarn Y. After the deceleration operation is carried out, when the rotation speed of the pin 41 reaches a prescribed cutting rotation speed which is lower than the production rotation speed, the cutter 23 cuts the yarn Y.

Description

False twist processing machine

The present invention relates to a false twist processing machine having a needle-type twisting device for twisting a thread traveling inside a rotating needle-type spindle.

For example, Patent Documents 1 and 2 disclose a false twisting machine including a needle-type twisting device that twists a yarn traveling inside a rotating needle spindle. In such a false twist processing machine, when the production of the yarn ends or when the yarn travels abnormally, the operator may intentionally cut the yarn. In general, a false twisting machine is provided with a yarn detection device called a feeler, and it is configured such that if the yarn detection device detects that the yarn disappears, the cutting device arranged on the yarn passage The device operates automatically. That is, as long as the operator unloads the thread from the thread detection device, the cutter can be activated to cut the thread. [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2019-157313 [Patent Document 2] Japanese Patent Laid-Open No. 2019-157314

[Problem to be solved by the invention]

However, if the yarn is cut during yarn production (false twist processing) by a false twist processing machine, the following problems arise. Because the needle spindle in the false twisting process rotates at a high speed, the number of twists increases, or a strong twist is imparted to the yarn. Therefore, if the thread is cut during the production of the thread, a block of thread tends to appear at the end of the thread. Moreover, the silk block becomes a resistance when passing through the needle ingot, so that a large force acts on the needle ingot, which may cause the needle ingot to fall off and be lost. Because the needle ingot is expensive, it should be avoided as much as possible to lose it.

In view of the above problems, an object of the present invention is to suppress drop-off of the needle spindles when the yarn is cut during the false twisting process in a false twisting machine having a needle type twisting device. [Technical means to solve the problem]

The false twist processing machine of the present invention has a needle-type twisting device for twisting the thread traveling inside the rotating needle spindle. The operating part for decelerating the production speed during silk thread production, and the cutter for cutting the aforementioned silk thread; The predetermined cutting speed at a low speed cuts off the aforementioned silk thread.

According to the present invention, if the operator performs a deceleration operation on the operation part, after the needle ingot decelerates to the cutting speed, the thread is cut by the cutter. Therefore, the number of twists of the yarn at the time of cutting is reduced, and the occurrence of lumps at the end of the cut yarn can be suppressed. Therefore, the ends of the yarn can smoothly pass through the needles, and when the yarn is cut during the false twisting process, the needles can be prevented from falling off.

In the present invention, the rotation speed of the needle spindle can be kept constant at the cutoff rotation speed.

By keeping the rotational speed of the needle spindle constant at the cutting rotational speed, the thread can be cut at the target rotational speed, and the falling of the needle spindle can be more reliably suppressed.

In the present invention, a wire detection device for detecting the presence of the wire may be provided on the downstream side of the cutter in the direction of travel of the wire. After the wire is cut by the cutter, if the wire When the detection device detects that the aforementioned thread disappears, the aforementioned needle ingot recovers and decelerates from the aforementioned cutting speed.

According to such a configuration, even if the rotation speed of the needle spindle is kept constant at the cut-off rotation speed, the deceleration of the needle spindle can be automatically restored and the rotation of the needle spindle can be stopped.

In the present invention, as the rotation speed of the needle spindle, it is possible to set a rotation speed suitable for threading the needle type twisting device, and the cutting rotation speed is the same as the rotation speed of the yarn insertion.

If the rotational speed of the needle spindle becomes too low, the number of twists of the yarn decreases and the tension increases, which may cause the yarn to break unexpectedly. Therefore, by setting the cutting rotation speed to be the same as the yarn hanging rotation speed at which the occurrence of yarn breakage can be suppressed, the occurrence of yarn breakage can be avoided until the cutting rotation speed is reached.

In the present invention, a plurality of processing units including the needle-type twisting device may be arranged together, and the operation unit is individually provided for the plurality of processing units.

According to such a structure, an operator must move to the processing unit which wants to cut a thread, and must operate the operation part of this processing unit. Therefore, it is possible to prevent the wires of other processing units from being accidentally cut.

In the present invention, a plurality of processing units including the aforementioned needle-type twisting device can be arranged together, and the aforementioned operation unit is commonly provided for the plurality of aforementioned processing units.

According to such a structure, the wire of any processing unit can be cut|disconnected from one operation part. Therefore, it is possible to save the labor of the operator to move to the processing unit where the thread is to be cut.

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. The false twist processing machine 1 is composed of a plurality of processing units 10 (also referred to as spindles) that perform false twist processing on the yarn Y and are arranged along the direction perpendicular to the paper in Figure 1 (hereinafter referred to as the machine length direction). . Each processing unit 10 is configured to include: a yarn supply section 2 for supplying the yarn Y, a processing section 3 for performing false twist processing on the yarn Y supplied from the yarn supply section 2, and a processing section 3 that performs false twist processing. The yarn Y is wound to form the winding portion 4 of the package P.

The yarn supply unit 2 supplies the yarn Y from the yarn supply package Q to the processing unit 3 . The processing section 3 performs false twist processing on the yarn Y traveling along the yarn passage. In the processing section 3, the first wire feeding roller 11, the anti-twist guide 12, the first heating device 13, the cooling device 14, and the needle type twisting device 15 are sequentially arranged along the yarn path from the upstream side of the yarn traveling direction. , The 2nd silk feeding roller 16, intertwining device 17, the 3rd silk feeding roller 18, the 2nd heating device 19, the 4th silk feeding roller 20. The winding unit 4 forms a package P by winding the yarn Y subjected to false twist processing in the processing unit 3 by the winding device 21 .

The false twist processing machine 1 has a main table 5 and a winding table 6 arranged to face each other at intervals in the left-right direction of FIG. 1 . The main machine table 5 and the winding table 6 are arranged extending toward the length direction of the machine table. The upper part of the main frame 5 and the upper part of the winding table 6 are connected by the supporting frame 7 . Devices constituting the processing section 3 of each processing unit 10 are mainly attached to the main machine table 5 and the support frame 7 . The space surrounded by the main table 5 , the winding table 6 and the support frame 7 is a working space 8 . The thread Y runs mainly around the working space 8 . An operator performs various operations such as thread hanging work in the work space 8 .

(Processing Department) The first yarn feeding roller 11 is a roller that feeds the yarn Y supplied from the yarn supply unit 2 toward the first heating device 13 . The first wire feed roll 11 is disposed on the upper portion of the winding table 6 . The first yarn feed roller 11 has a driving roller and a driven roller, and feeds the yarn Y toward the downstream side in the yarn traveling direction while the yarn Y is sandwiched between the driving roller and the driven roller. The drive rollers of the processing units 10 are connected to a common drive shaft and driven synchronously. The second wire feed roll 16, the third wire feed roll 18, and the fourth wire feed roll 20 also have the same configuration.

The anti-twist guide 12 prevents the twist imparted to the yarn Y by the needle twisting device 15 from propagating upstream in the direction in which the yarn travels relative to the anti-twist guide 12 . The anti-twist guide 12 is disposed between the first wire feeding roller 11 and the first heating device 13 in the yarn traveling direction.

The first heating device 13 is a device for heating the yarn Y twisted by the needle twisting device 15 . The first heating device 13 is attached to the 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 disposed between the first heating device 13 and the needle twisting device 15 in the yarn traveling direction.

The needle 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 needle type twisting device 15 of each processing unit 10 is configured to be individually driven by a motor 54 (see FIGS. 2 and 4 ) which will be described later.

The second feed roller 16 is a roller for feeding the yarn Y twisted by the needle twisting device 15 toward the interlacing device 17 . The second feed roller 16 is disposed below the needle twisting device 15 in the main frame 5 . The feed speed of the yarn Y by the second feed roller 16 is faster than the feed speed of the yarn Y by the first feed roller 11 . Therefore, the yarn Y is stretched between the first wire feed roller 11 and the second wire feed roller 16 .

The entanglement device 17 is a device for imparting entanglement by injecting air to the yarn Y. The interlacing device 17 is arranged below the second wire feeding roller 16 in the main frame 5 .

The third feed roller 18 is a roller for feeding the yarn Y entangled by the entanglement device 17 toward the second heating device 19 . The third wire feeding roller 18 is disposed below the interlacing device 17 in the main frame 5 . The feed speed of the yarn Y by the third feed roller 18 is slower than the feed speed of the yarn Y by the second feed roller 16 . Therefore, the yarn Y is loosened between the second wire feed roller 16 and the third wire feed roller 18 .

The second heating device 19 is a device for heating the yarn Y fed from the third yarn feed roller 18 . The second heating device 19 is disposed below the third wire feed roller 18 in the main frame 5 .

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

In the processing section 3 configured in this way, the yarn Y stretched between the first wire feed roll 11 and the second wire feed roll 16 is twisted by the needle type twisting device 15 . The twist formed by the needle-type twisting device 15 propagates to the anti-twist guide 12 , but does not propagate to the upstream side of the anti-twist guide 12 in the yarn traveling direction. The thus stretched and twisted yarn Y is heated by the first heating device 13 and then cooled by the cooling device 14 to be heat-set. The yarn Y passing through the needle twisting device 15 is untwisted before reaching the second feed roller 16 . However, since the twist of the yarn Y is heat-set as described above, each filament maintains a wavy false twist state. After that, the thread Y that is entangled by the entanglement device 17 and heat-set by the second heating device 19 is wound by the winding device 21 .

In the processing unit 10, a cutter 23 and a wire detection device 24 are further arranged on the wire passage. The cutter 23 is arranged on the upstream side of the first yarn feeding roller 11 in the yarn traveling direction, and is used to cut the yarn Y. The yarn detecting device 24 is arranged on the downstream side of the fourth yarn feeding roller 20 in the yarn traveling direction and is used for detecting whether there is a yarn Y. Also, switches 25 (operating units in the present invention) are provided on the main machine table 5 corresponding to the processing units 10 . The switch 25 is used to switch the rotation state of the needle spindle 41 . The switch 25 of this embodiment is comprised with the button. However, the switch 25 can also be made of a lever, a dial or the like.

(needle type twisting device) FIG. 2 is a schematic diagram showing the configuration of the needle twisting device 15 , and FIG. 3 is a view of the needle twisting device 15 viewed from the direction III in FIG. 2 . The needle type twisting device 15 twists the yarn Y traveling inside the needle spindle 41 by rotating the cylindrical needle spindle 41 around its axis. Also in Fig. 2, the thread Y runs from top to bottom. Also in FIG. 3 , the illustration of the guide wire member 52 is omitted.

The pin type twisting device 15 has two rotating shafts 43 and 44 rotatably supported by a support member 42 via bearings not shown. Two rollers 45 and 46 separated in the axial direction are attached to the rotating shaft 43 . Two rollers 47 and 48 separated in the axial direction are attached to the rotating shaft 44 . The roller 45 and the roller 47 are arranged at the same position in the axial direction, and are slightly separated so as not to contact each other as shown in FIG. 3 . Similarly, the roller 46 and the roller 48 are arranged at the same position in the axial direction, and are slightly separated so as not to be in contact with each other. The rotating shaft 43 is driven to rotate around the shaft by the motor 54 .

The needle bar 41 is a cylindrical member extending in the axial direction, and the thread Y runs inside the needle bar 41 . A magnetic portion 41 a facing magnets 49 and 50 described later is formed in an axially intermediate portion of the needle bar 41 . Furthermore, at one end portion in the axial direction of the needle bar 41 (the end portion on the downstream side in the yarn traveling direction), a wrapping portion 41b extending in the radial direction is fixed inside. The thread Y is wound around the winding part 41b once. With this configuration, when the needle spindle 41 rotates around the axis, the yarn Y is twisted.

A magnet 49 is arranged between the roller 45 and the roller 46 in the axial direction. Similarly, a magnet 50 is arranged between the roller 47 and the roller 48 in the axial direction. The magnets 49 and 50 are fixed to the support member 42 through a bracket 51 (see FIG. 3 ). When the needle ingot 41 is inserted between the roller 45 (46) and the roller 47 (48) in such a manner that the magnetic portion 41a of the needle ingot 41 faces the magnets 49, 50, as shown in FIG. Magnet 49,50 keeps. Specifically, the needle ingot 41 is clamped by the roller 45 (46) and the roller 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 to keep. The needle spindle 41 is not mechanically fixed to other members, but is held by the magnetic force by the magnets 49 and 50 and the frictional force with the peripheral surfaces of the rollers 45 to 48 .

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

As indicated by arrows in FIG. 3 , when the roller 45 is rotated by rotating the rotating shaft 43 , the needle ingot 41 in contact with the peripheral surface of the roller 45 is driven to rotate in the direction opposite to the roller 45 . Furthermore, the roller 47 which contacts the peripheral surface of the needle ingot 41 is driven to rotate in the direction opposite to the needle ingot 41. As shown in FIG. In this way, the yarn Y is twisted by driving the needle spindle 41 to rotate around its axis.

(electrical configuration) FIG. 4 is a block diagram showing the electrical configuration of the false twisting machine 1 . In FIG. 4 , only the details of one processing unit 10 are shown in the figure due to the paper surface, but the other processing units 10 have the same configuration. The false twist processing machine 1 has a control unit 30 that controls the operations of the plurality of processing units 10 . A setting unit 31 for an operator to input control programs and various set values is connected to the control unit 30 . The setting unit 31 may be configured by, for example, a touch panel, or other configurations such as a combination of a keyboard and a monitor may be employed.

The switch 25 provided in each processing unit 10 is electrically connected to the motor 54 of the needle-type twisting device 15 , and is used to switch the rotation state of the needle spindle 41 . If the switch 25 is pressed when the needle spindle 41 is stopped, the needle spindle 41 will accelerate to a predetermined spinning rotation speed, and become a constant rotation speed at the spinning rotation speed. If the switch 25 is pressed when the needle ingot 41 rotates at the spinning speed, the needle ingot 41 will accelerate to the production speed, and become a certain speed at the production speed. When the switch 25 is pressed while the needle spindle 41 is rotating at the production rotation speed, the needle spindle 41 decelerates from the production rotation speed and stops. The yarn-hanging rotation speed refers to the rotation speed of the needle spindle 41 suitable for performing yarn-hanging on the needle-type twisting device 15 so that the occurrence of yarn breakage can be suppressed. The production rotation speed is the rotation speed of the needle spindle 41 during yarn production (during false twist processing). Hanging wire speed is lower than production speed.

In the present embodiment, when the switch 25 is pressed and held while the needle spindle 41 is rotating at the production rotation speed, the needle spindle 41 is decelerated from the production rotation speed, and becomes a constant rotation speed at a predetermined cutting rotation speed. That is, pressing and holding the switch 25 corresponds to the deceleration operation of the present invention. The cutting rotation speed refers to a rotation speed so low that the occurrence of lumps at the end of the yarn Y can be suppressed when the yarn Y is cut by the cutter 23 by reducing the number of twists of the yarn Y. However, if the rotation speed of the needle spindle 41 becomes too low, the number of twists of the yarn Y becomes too small, so that the tension becomes too high, and there is a possibility of unexpected yarn breakage. Therefore, the cutting rotation speed is set to be high enough to suppress occurrence of yarn breakage of the yarn Y from the production rotation speed to the cutting rotation speed. In the present embodiment, the cutting rotation speed is set to the same rotation speed as the threading rotation speed. The production speed and cutting speed (thread speed) of the needle spindle 41 can be set through the setting part 31 .

The control unit 30 is electrically connected to the motor 54 , the switch 25 , the cutter 23 and the wire detection device 24 of each processing unit 10 . The control unit 30 controls the actions of the motor 54 and the cutter 23 according to the rotation speed of the motor 54 (that is, the rotation speed of the needle spindle 41 ) and the detection result of whether there is a wire Y based on the wire detection device 24 . Furthermore, the control unit 30 can recognize the rotation state of the needle spindle 41 of the needle spindle type twisting device 15 by recognizing the state of the switch 25 of each processing unit 10 . The rotation state of the needle spindle 41 can be switched not only by the switch 25 but also by the control unit 30 .

(Operation when the thread is cut) Next, in the false twist processing machine 1 configured as above, a series of procedures in which the operator cuts the yarn Y of the processing unit 10 that is producing the yarn will be described. Fig. 5 is the flow chart when silk thread is cut off. Fig. 6 is a timing diagram when the silk thread is cut.

When cutting the thread Y of a certain processing unit 10 , the operator moves to the processing unit 10 and presses and holds the switch 25 of the processing unit 10 . When the needle spindle 41 of the needle spindle type twisting device 15 rotates at the production speed, the switch 25 is pressed for a long time (yes in step S1, time point T1), and the needle spindle 41 starts to decelerate (step S2).

The control unit 30 is configured to temporarily stop the deceleration of the needle spindle 41 when the rotation speed of the needle spindle 41 decreases to the cut-off rotation speed (YES in step S3, time point T2), and to maintain the rotation speed of the needle spindle 41 constant at the cut-off rotation speed. (step S4). The control unit 30 is configured to operate the cutter 23 to cut the yarn Y while the needle bar 41 is rotating at the cutting rotation speed (step S5, time point T3). In this way, the thread Y is cut after the needle spindle 41 is decelerated to the cutting speed, so that the number of twists of the thread Y at the time of cutting can be reduced. As a result, the occurrence of lumps at the end of the cut thread Y can be suppressed, and the end of the thread Y can easily pass through the needle bar 41 smoothly.

If the end of the cut thread Y passes through the thread detection device 24 completely, the thread detection device 24 will detect that the thread Y disappears. The control unit 30 is configured to restore the deceleration of the needle spindle 41 (step S7) when the thread disappearance is detected by the thread detection device 24 (Yes in step S6, time point T4). And finally, the rotation of the needle spindle 41 is stopped (timing T5).

(Effect) In this embodiment, if the operator uses the switch 25 (operating part) to perform a deceleration operation, the needle spindle 41 will decelerate to the cutting speed, and then the thread Y will be cut by the cutter 23 . Therefore, the number of twists of the yarn Y at the time of cutting is reduced, and the occurrence of lumps at the end of the cut yarn Y can be suppressed. Therefore, the end portion of the yarn Y can smoothly pass through the needle spindle 41, and when the yarn Y is cut during the false twisting process, the drop of the needle spindle 41 can be suppressed.

In the present embodiment, the rotational speed of the needle spindle 41 is kept constant at the cutting rotational speed. By keeping the rotation speed of the needle spindle 41 constant at the cutting rotation speed, the yarn Y can be cut at the target rotation speed, and thus the fall-off of the needle spindle 41 can be more reliably suppressed.

In this embodiment, a wire detection device 24 for detecting whether there is a wire Y is provided on the downstream side of the cutter 23 in the direction in which the wire travels. After the wire Y is cut by the cutter 23, if the wire detection When the detection device 24 detects that the thread Y disappears, the needle spindle 41 will recover from the cutting speed and decelerate. According to such a configuration, even if the rotation speed of the needle spindle 41 becomes constant once at the cut-off rotation speed, the deceleration of the needle spindle 41 is automatically restored, and the rotation of the needle spindle 41 is stopped.

In the present embodiment, as the rotation speed of the needle spindle 41, a yarn rotation speed suitable for the needle type twisting device 15 is set, and the cutting rotation speed is the same as the yarn rotation speed. If the rotation speed of the needle spindle 41 becomes too low, the number of twists of the yarn Y decreases to increase the tension, and the yarn Y may break unexpectedly. Therefore, by setting the cutting rotation speed to be the same as the yarn hanging rotation speed at which the occurrence of yarn breakage can be suppressed, the occurrence of yarn breakage can be avoided until the cutting rotation speed is reached.

In this embodiment, a plurality of processing units 10 including needle twisting devices 15 are arranged together, and switches 25 are individually provided for each of the plurality of processing units 10 . According to such a configuration, the operator must move to the processing unit 10 where the yarn Y is to be cut, and operate the switch 25 of the processing unit 10 . Therefore, it is possible to prevent the wire Y of another processing unit 10 from being accidentally cut.

(Other implementation forms) Next, modified examples in which various changes are added to the above-described embodiment will be described.

In the above-described embodiment, long pressing of the switch 25 corresponds to the deceleration operation of the present invention. However, the specific aspect of the deceleration operation is not limited to this. For example, the deceleration operation may be performed by pressing the switch 25 a predetermined number of times within a predetermined time.

In the above embodiment, when the yarn Y is cut by the cutter 23, the rotation speed of the needle spindle 41 is maintained at the cutting rotation speed. However, when cutting the thread Y, it is not necessary to keep the rotation speed of the needle spindle 41 constant at the cutting rotation speed. The thread Y may be cut during deceleration of the needle spindle 41 .

In the above embodiment, when the rotation speed of the needle spindle 41 is kept constant at the cutting speed, if the thread detection device 24 detects that the thread Y disappears, the deceleration of the needle spindle 41 is resumed. However, the method of recovering the deceleration of the needle spindle 41 is not limited to this. For example, the switch 25 may be operated by an operator to restore the deceleration of the needle spindle 41 . Alternatively, the controller 30 may return the deceleration of the needle spindle 41 after a predetermined time has elapsed since the needle spindle 41 reached the cutting rotation speed, or after a predetermined time has elapsed since the yarn Y was cut. When the wire detection device 24 is not used to judge the deceleration recovery of the needle spindle 41, the wire detection device 24 can be omitted, and the wire detection device 24 can also be retained.

In the above-mentioned embodiment, the cutting rotation speed is set to the same rotation speed as the threading rotation speed. However, the cutting rotation speed may be set differently from the threading rotation speed.

In the above-mentioned embodiment, the switch 25 provided in each processing unit 10 functions as the operation unit of the present invention. However, it is also possible to configure a common operating unit for a plurality of processing units 10 . For example, the setting unit 31 may function as a common operation unit. In this case, what is necessary is just to select the processing unit 10 which cuts the thread Y in the setting part 31, and to start the deceleration of the needle spindle 41 of this processing unit 10. Alternatively, when a plurality of processing units 10 to cut the yarn Y are selected in the setting unit 31, all the needle spindles 41 of the selected plurality of processing units 10 start to decelerate. According to such a configuration, the yarn Y of any machining unit 10 can be cut from one setting unit 31 . Therefore, the labor of moving the operator to the processing unit 10 where the thread Y is to be cut can be omitted. In this case, the operation of selecting the machining unit 10 to cut the yarn Y in the setting unit 31 corresponds to the deceleration operation of the present invention. Also, when the yarn Y is to be cut in a plurality of processing units 10, the timing at which the control unit 30 issues instructions to each needle twisting device 15 may be at the same timing or at different timings.

1: False twist processing machine 10: Processing unit 15:Needle type twisting device 23: Cutter 24: Silk thread detection device 25: switch (operating part) 30: Control Department 31: Setting Department 41: needle ingot 54: motor Y: silk thread

[FIG. 1] is a schematic diagram showing the structure of the false twist processing machine of this embodiment. [Fig. 2] is a schematic diagram showing the configuration of a needle-type twisting device. [FIG. 3] It is a figure which looked at the pin type twisting apparatus from the direction III of FIG. 2. [FIG. [Fig. 4] is a block diagram showing the electrical configuration of the false twisting machine. [Fig. 5] Flowchart of cutting the tie thread. [Fig. 6] Timing chart when the tie thread is cut.

1: False twist processing machine

10: Processing unit

15:Needle type twisting device

23: Cutter

24: Silk thread detection device

25: switch (operating part)

30: Control Department

31: Setting Department

54: motor

Claims (6)

A false twisting processing machine having a needle-type twisting device for twisting a thread traveling inside a rotating needle spindle, characterized in that, The system is equipped with: an operation unit capable of performing a deceleration operation for decelerating the rotation speed of the aforementioned needle ingot from the production rotation speed during yarn production, and a cutter for cutting the aforementioned yarn; The cutter cuts the thread when the rotation speed of the needle spindle reaches a predetermined cutting rotation speed lower than the production rotation speed after performing the deceleration operation. The false twist processing machine as described in Claim 1, wherein, The rotation speed of the aforementioned needle spindle is kept constant at the aforementioned cut-off rotation speed. The false twist processing machine as described in Claim 2, wherein, A wire detection device for detecting the presence of the wire is provided on the downstream side of the cutter in the direction of wire travel, After the aforementioned thread is cut by the aforementioned cutter, if the aforementioned thread detecting device detects that the aforementioned thread disappears, then the aforementioned needle spindle recovers from the aforementioned cutting speed and decelerates. The false twist processing machine according to any one of claims 1 to 3, wherein, As the rotation speed of the aforementioned needle spindle, it is set to be suitable for the spinning rotation speed when the aforementioned needle spindle type twisting device is used to hang the yarn, The above-mentioned cutting speed is the same as the above-mentioned hanging wire speed. The false twist processing machine according to any one of claims 1 to 4, wherein, Arranging a plurality of processing units comprising the aforementioned needle-type twisting device together, The said operation part is provided individually for each of a plurality of said processing units. The false twist processing machine according to any one of claims 1 to 4, wherein, Arranging a plurality of processing units comprising the aforementioned needle-type twisting device together, The operation unit is provided in common for a plurality of the processing units.

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