JP2023169860A - Fiber bundle-gathering device of spinning machine - Google Patents

Abstract

To provide a fiber bundle-gathering device of a spinning machine, capable of positioning a coupling to a position where a bolt can be easily operated when stopping the fiber bundle-gathering device.SOLUTION: A fiber bundle-gathering device 10 is assembled with: a rotation position detection part 30 for output of a rotation positional information of a counter shaft 20 by detection of a detection face 60c; a control device 40 which receives the rotation positional information output from the rotation position detection part 30 and controls rotation of the counter shaft 20; and an operation part 41 which outputs a stop command to stop rotation of the counter shaft 20 to the control device 40. The control device 40 controls drive of the counter shaft 20 in a manner that when rotation of the counter shaft 20 is stopped, the coupling 70 is positioned in an operation range when a stop command is input from the operation part 41 based on the rotation positional information input from the rotation position detection part 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fiber bundle converging device for a spinning machine.

A fiber bundle converging device of a spinning machine preliminarily converges the fiber bundle drafted by a draft device before twisting. This convergence improves yarn quality such as reduction of fuzz and yarn strength. The fiber bundle convergence device is provided on the frame of the spinning machine. Such a fiber bundle focusing device, for example, as disclosed in Patent Document 1, includes a rotating shaft including a delivery bottom roller that delivers the fiber bundle, and a counter shaft for rotating the rotating shaft. . A driving gear is provided on the countershaft, and a passive gear is provided on the rotating shaft. The driving gear meshes with the passive gear. This meshing transmits rotational force from the countershaft to the rotating shaft.

Generally, the frame of a spinning machine is long, so it is difficult to drive a fiber bundle converging device with a single countershaft. For this reason, the fiber bundle concentrator is equipped with a plurality of countershafts. The plurality of countershafts are arranged in the axial direction of the countershaft, and axially adjacent countershafts are connected by a coupling. In this case, the coupling connects the countershafts by being bolted together.

European Patent Application No. 1473388

For maintenance of the fiber bundle concentrator, etc., it may be necessary to release the connection between the countershafts by the coupling. In this case, it is necessary to stop the driving of the fiber bundle converging device and stop the rotation of the countershaft, and then release the tightening by the bolts. Moreover, after maintenance etc. are completed, it is necessary to tighten the bolts again. However, depending on the rotational position of the coupling when the drive of the fiber bundle converging device is stopped and the rotation of the countershaft is stopped, it is very difficult to operate the bolt.

A fiber bundle convergence device for a spinning machine to solve the above problems is provided on a rotating shaft, includes a delivery bottom roller that conveys the fiber bundle, a suction section that exerts a suction effect on the fiber bundle, and a suction section that rotates along the suction section. and a delivery top roller that rotates together with the delivery bottom roller that contacts through the ventilation apron, a condensation unit that collects the drafted fiber bundle, and a counter that rotates the rotation shaft. A shaft that connects a plurality of countershafts lined up in the axial direction of the countershafts, a countershaft drive motor that drives the countershafts, and the countershafts that are adjacent to each other in the axial direction, and the countershafts and a coupling that rotates integrally with the countershaft, and the coupling connects the countershafts by tightening a coupling body that extends between the ends of the adjacent countershafts with a bolt. a detected part provided on the shaft or the coupling to detect the rotational position of the countershaft; a rotational position detection part that outputs rotational position information of the countershaft by detecting the detected part; a control device that receives the rotational position information output from the rotational position detection section and controls the countershaft drive motor; and an operation section that outputs a stop command to the control device to stop driving the countershaft drive motor. , the operating range of the coupling is a rotational position of the coupling in which the bolt can be operated on the coupling body from the front, and the control device is configured to control the rotational position of the coupling from the operating section to the stopper. When a command is input, based on the rotational position information input from the rotational position detection section, the counter is set so that the coupling is located within the operation range when the rotation of the countershaft is stopped. The gist is to control the drive of a shaft drive motor.

According to this, when the stop command is output from the operation section and the rotation of the countershaft drive motor is stopped and the rotation of the countershaft is stopped, the coupling is located in the operation range. Therefore, when the fiber bundle concentrator is stopped, the coupling can be positioned at a position where the bolt can be easily operated. As a result, after stopping the drive of the fiber bundle convergence device, the bolt can be easily operated on the coupling body.

Regarding the fiber bundle focusing device of a spinning machine, the fiber bundle focusing device may include a plurality of the couplings, and the rotational positions of all the plurality of couplings may be aligned.
According to this, when the stop command is output from the operation section, the drive of the countershaft drive motor is stopped, and the rotation of the countershaft is stopped, all the couplings are located within the operation range. Therefore, the bolt can be operated with respect to the coupling body of any coupling.

Regarding the fiber bundle focusing device of a spinning machine, a detection shaft is connected to the countershaft located at one end of the plurality of countershafts lined up in a row, and the detection shaft rotates as a countershaft and also rotates as a countershaft. The axial length may be shorter than the axial length of the counter shaft, and the detected portion may be provided on the detection shaft.

According to this, the fiber bundle focusing device can be made more compact than, for example, when a countershaft at one end in the axial direction is connected to another countershaft having a detected portion.
Regarding the fiber bundle focusing device of a spinning machine, the spinning machine includes a spindle drive motor that drives a spindle to wind up the fiber bundle focused by the fiber bundle focusing device, and the control device includes the countershaft drive motor and a synchronization control unit that drives the spindle drive motor in synchronization with each other; and a rotation speed of each of the countershaft drive motor and the spindle drive motor, and is set to each of the countershaft drive motor and the spindle drive motor. a detected speed setting unit that sets a detected speed that is a rotational speed that is a rotational speed that is lower than the rotational speed at the time when the stop command is input from the operation unit; a mode setting section configured to enable execution of a first maintenance mode in which the coupling is positioned within the operating range when rotation of the countershaft stops; is set to be executable, and when the stop command is input from the operation unit during operation of the spinning machine, the synchronization control unit controls each of the countershaft drive motor and the spindle drive motor to: The rotating position detecting section detects the detected portion by driving the countershaft drive motor and the spindle drive motor in synchronization with each other at the detected speed. At this point, each of the countershaft drive motor and the spindle drive motor may be stopped.

According to this, when the first maintenance mode is set to be executable by the mode setting section, when a detection signal is output from the rotational position detection section during driving at the detection speed, the synchronization control section Stop the drive motor and spindle drive motor in synchronization. Then, the countershaft stops and the spindle stops so that the coupling is located within the operating range. That is, based on the rotational position of the countershaft, it is possible to stop the countershaft and position the coupling within the operation range, while also stopping the spindle by following the countershaft. Since each of the countershaft drive motor and the spindle drive motor stops after being decelerated to the detected speed, rotation due to inertia after stopping can be reduced. As a result, even if the countershaft is stopped at a desired position, the difference in rotational speed relative to the spindle can be reduced, so that breakage of the fiber bundle can be suppressed.

Regarding the fiber bundle focusing device of a spinning machine, the spinning machine includes a spindle drive motor that drives a spindle to wind up the fiber bundle focused by the fiber bundle focusing device, and the control device includes the countershaft drive motor and a synchronization control unit that drives the spindle drive motor in synchronization with each other; and a rotation speed of each of the countershaft drive motor and the spindle drive motor, and is set to each of the countershaft drive motor and the spindle drive motor. a detected speed setting unit that sets a detected speed that is a rotational speed that is lower than the rotational speed at the time when the stop command is input from the operation unit; and a detected speed setting unit that starts the stopped spinning machine. a mode setting unit configured to enable execution of a second maintenance mode in which the coupling is positioned within the operating range when the spinning machine is stopped and rotation of the counter shaft is stopped after the rotation of the countershaft is stopped; When the execution command for the second maintenance mode is input to the stopped spinning machine in the case where the second maintenance mode is set to be executable by the synchronous control unit, the synchronization control unit operates the counter at the detected speed. The shaft drive motor and the spindle drive motor may be driven in synchronization, and each of the countershaft drive motor and the spindle drive motor may be stopped when the rotational position detection section detects the detected portion. good.

According to this, when the second maintenance mode is set to be executable by the mode setting section, when a detection signal is output from the rotational position detection section while the spinning machine is being driven at the detection speed after starting the spinning machine, the synchronous control The countershaft drive motor and spindle drive motor are synchronized and stopped. Then, the countershaft stops and the spindle stops so that the coupling is located within the operating range. That is, based on the rotational position of the countershaft, it is possible to stop the countershaft and position the coupling within the operation range, while also stopping the spindle by following the countershaft. Since each of the countershaft drive motor and the spindle drive motor stops while rotating at the detected speed, rotation due to inertia after stopping can be reduced. As a result, even if the countershaft is stopped at a desired position, the difference in rotational speed relative to the spindle can be reduced, so that breakage of the fiber bundle can be suppressed. Even if it is desired to perform maintenance on the fiber bundle converging device when the spinning machine is stopped, by executing the second maintenance mode, the countershaft can be positioned at a position where maintenance can be easily performed.

Regarding the fiber bundle focusing device of a spinning machine, the mode setting unit is configured to enable execution of a normal stop mode in which the spindle drive motor follows the countershaft drive motor to stop the spindle drive motor and the countershaft drive motor. You can.

According to this, the method of stopping the spinning machine can be selected, so that the needs of the operator can be met.

According to the present invention, when the fiber bundle convergence device is stopped, the coupling can be positioned at a position where the bolt can be easily operated.

FIG. 1 is a front view schematically showing a spinning machine and a fiber bundle focusing device according to a first embodiment. It is a sectional view showing a condensation unit. It is a perspective view showing a coupling. FIG. 3 is a cross-sectional view showing the coupling of the operating range. FIG. 3 is a cross-sectional view showing the coupling of the operating range. It is a perspective view showing a mounting jig. FIG. 3 is a front view showing a state in which the jig main body is attached to the counter shaft. FIG. 3 is a side view showing a state in which the jig main body is attached to the counter shaft. It is a side view showing a mounting jig. FIG. 3 is a partial perspective view showing the detected surface of the detection shaft. FIG. 2 is a configuration diagram schematically showing a spinning machine according to a second embodiment. FIG. 3 is a diagram schematically showing an input section. It is a figure explaining normal stop mode. It is a figure explaining the 1st maintenance mode. It is a figure explaining the 2nd maintenance mode. FIG. 3 is a partial perspective view showing the detected surface of the coupling.

(First embodiment)
A first embodiment of a fiber bundle convergence device for a spinning machine will be described below with reference to FIGS. 1 to 10.

<Overall fiber bundle convergence device for spinning machine>
The fiber bundle converging device of the spinning machine is provided downstream of the draft device. In the following description, the "fiber bundle convergence device of a spinning machine" will simply be referred to as "fiber bundle convergence device." The fiber bundle converging device is used to condense the drafted fiber bundle in advance before twisting. Further, the fiber bundle convergence device performs processing such as reducing fluff in the converged fiber bundle.

<Spinning machine>
As shown in FIG. 1, the spinning machine 100 includes a fiber bundle focusing device 10, an out-end head 101, a gear end head 102, and a plurality of support plates 50. The out-end head 101 and the gear end head 102 are provided on a machine base (not shown). A countershaft drive motor 103 is built into the gear end head 102 . A countershaft drive motor 103 drives the fiber bundle focusing device 10 . Note that the draft device is provided further back than the fiber bundle converging device 10 in the direction perpendicular to the plane of FIG. 1 . After being processed by the fiber bundle convergence device 10, the fiber bundle F is conveyed toward the front side and downward in the direction perpendicular to the plane of FIG. Note that the front side in the direction perpendicular to the plane of the paper in FIG. 1 is the front side of the fiber bundle converging device 10. Therefore, the fiber bundle F processed by the fiber bundle convergence device 10 is conveyed toward the front of the fiber bundle convergence device 10. A view of the fiber bundle focusing device 10 from the front is referred to as a front view. Further, the direction in which the out-end head 101 and the gear end head 102 face each other is defined as the longitudinal direction X of the spinning machine 100.

<Support plate>
The support plate 50 is fixed to a roller stand (not shown). A plurality of support plates 50 are arranged between the out-end head 101 and the gear end head 102.

FIG. 8 schematically shows the support plate 50. As shown in FIG. 8, a shaft groove 53 is formed in the support plate 50. In a side view of the support plate 50 in the longitudinal direction X of the spinning machine 100, the shaft groove 53 has an arc shape and opens forward and diagonally upward.

<Fiber bundle convergence device>
As shown in FIG. 1, the fiber bundle focusing device 10 is arranged between an out-end head 101 and a gear end head 102. The fiber bundle focusing device 10 includes a plurality of condensing units 11, a plurality of countershafts 20, and a coupling 70 that connects adjacent countershafts 20. The fiber bundle focusing device 10 also includes a rotational position detection section 30, a control device 40, an operation section 41, and a detected surface 60c as a detected section.

<Condensing unit>
The condensing unit 11 condenses the drafted fiber bundle F.
As shown in FIGS. 1 and 2, the condensing unit 11 includes a rotating shaft 12, a delivery bottom roller 13, a suction section 14, a ventilation apron 15, and a delivery top roller 16. The delivery bottom roller 13 is provided on the rotating shaft 12 and rotates integrally with the rotating shaft 12. A passive gear 18 is provided on the rotating shaft 12.

The suction section 14 includes a plurality of suction holes (not shown). The suction unit 14 exerts a suction action on the transported fiber bundle F via the ventilation apron 15. The ventilation apron 15 is formed of an endless woven fabric that can ensure ventilation. The ventilation apron 15 is wrapped around the delivery bottom roller 13, the suction section 14, and the guide section 19. The ventilation apron 15 is rotated along the suction section 14. The delivery top roller 16 is in contact with the delivery bottom roller 13 via the ventilation apron 15 and rotates together with the delivery bottom roller 13.

As shown in FIG. 1, the fiber bundle converging device 10 has a condensing unit 11 for eight spindles as one unit. The fiber bundle concentrator 10 includes a plurality of condensing units 11 between an out-end head 101 and a gear end head 102. One condensing unit 11 is arranged between the support plates 50. Two support plates 50 are arranged between adjacent condensation units 11 in the longitudinal direction X. A rotary shaft bearing 51 and a shaft bearing 52 are arranged between one unit of support plates 50 . The rotating shaft 12 is rotatably supported by a support plate 50 via a rotating shaft bearing 51.

<Counter shaft>
The countershaft 20 rotates the rotating shaft 12. The plurality of countershafts 20 are lined up in the axial direction of the countershaft 20. The countershaft 20 is rotatably supported by a support plate 50 via a shaft bearing 52. A plurality of countershafts 20 are arranged side by side in the longitudinal direction X of the spinning machine 100. The counter shaft 20 includes a shaft main body 20a, a first connecting end 20b, and a second connecting end 20c. The first connecting end 20b is provided at the first end of the shaft body 20a in the axial direction. The second connecting end 20c is provided at the second axial end of the shaft body 20a. The axial length of the first connecting end 20b is shorter than the axial length of the second connecting end 20c. The first connecting end 20b and the second connecting end 20c have a smaller diameter than the shaft main body 20a.

As shown in FIG. 3, the first connecting end 20b faces the second connecting end 20c of the adjacent countershaft 20. As shown in FIG. The second connecting end 20c is inserted between one unit of support plates 50, and is rotatably supported by the support plates 50 via a shaft bearing 52.

As shown in FIG. 1, the countershaft 20 includes a drive gear 21. The drive gear 21 is disposed closer to the first connecting end 20b in the axial position of the countershaft 20. Note that the passive gear 18 and the driving gear 21 may be arranged closer to the second connecting end 20c of the axial position of the countershaft 20, or may be arranged at the center in the axial direction. . The drive gear 21 meshes with the passive gear 18 of the rotating shaft 12. When the drive gear 21 rotates together with the countershaft 20, the passive gear 18 of the rotating shaft 12 is rotated. As the passive gear 18 rotates, the delivery bottom roller 13 rotates together with the rotating shaft 12. As the delivery bottom roller 13 rotates, the ventilation apron 15 rotates and the fiber bundle F is conveyed. Therefore, the delivery bottom roller 13 conveys the fiber bundle F.

The fiber bundle F is sandwiched between a delivery bottom roller 13 and a delivery top roller 16 that rotate according to the rotation of a rotating shaft 12 driven by a counter shaft 20, and is sucked into a suction section 14 via a ventilation apron 15. while being transported.

<Detection shaft>
The detection shaft 60, which is also a countershaft, is connected to a countershaft 20 located at one end of the plurality of countershafts 20 lined up. Specifically, the detection shaft 60 is connected to the countershaft 20 closest to the out-end head 101. This detection shaft 60 rotates as a countershaft. The axial length of the detection shaft 60 is shorter than the axial length of the counter shaft 20.

The first end 60a of the detection shaft 60 is connected to the second connection end 20c of the countershaft 20 by a coupling 70. The second end 60b of the detection shaft 60 projects outside the out-end head 101 and is rotatably supported by a bearing 105. The second end portion 60b of the detection shaft 60 is provided with a detected surface 60c as a detected portion. Therefore, the counter shaft 20 includes a detected surface 60c as a detected portion. This detected surface 60c is provided to detect the rotational position of the countershaft 20. As shown in FIG. 10, the detected surface 60c is a plane extending in the axial direction and radial direction of the detection shaft 60.

<Coupling>
As shown in FIGS. 3, 4, and 5, the coupling 70 includes a coupling body 73 and a plurality of bolts 80. The coupling body 73 includes a first connecting member 71 and a second connecting member 72. The axial direction of the coupling 70 is the axial direction of the first connecting member 71 and the second connecting member 72, and the radial direction of the coupling 70 is the radial direction of the first connecting member 71 and the second connecting member 72. The first connecting member 71 and the second connecting member 72 have a semi-cylindrical shape. A housing recess 79 is provided in each of the first connecting member 71 and the second connecting member 72. The accommodation recess 79 is a recess for accommodating the first connection end 20b and the second connection end 20c. Each of the first connecting member 71 and the second connecting member 72 includes mating surfaces 74 that sandwich the accommodation recess 79 in the radial direction.

A bolt head accommodating portion 75 is formed in the first connecting member 71, and an insertion hole 76 communicating with the bolt head accommodating portion 75 is formed. The bolt head accommodating portion 75 opens on an arcuate surface of the outer surface of the first connecting member 71 . The insertion hole 76 opens in the mating surface 74 of the first connecting member 71 . The bolt head accommodating portion 75 and the insertion hole 76 are aligned in the axial direction of the first connecting member 71 along the accommodating recess 79 . The bolt head accommodating portion 75 and the insertion hole 76 are arranged on both sides of the accommodating recess 79 so as to sandwich the accommodating recess 79 in the radial direction.

The second connecting member 72 has a female thread 77 formed therein. The female thread 77 communicates the arcuate surface of the outer surface of the first connecting member 71 with the mating surface 74 . The female threads 77 are aligned in the axial direction of the second connecting member 72 along the accommodation recess 79 . The female threads 77 are arranged on both sides of the accommodation recess 79 so as to sandwich the accommodation recess 79 in the radial direction.

The bolt 80 includes a bolt head 80a and a bolt shaft portion 80b. An operation hole 80c is formed in the bolt head 80a. The operation hole 80c is a hexagonal hole. The bolt 80 is operated by inserting the operating tool 90 into the operating hole 80c. The operating tool 90 is a long hexagonal rod.

The coupling 70 connects the countershafts 20 adjacent to each other in the axial direction of the countershafts 20, and rotates together with the countershafts 20. The bolt shaft portion 80b is inserted into the insertion hole 76 through the bolt head accommodating portion 75 of the first connecting member 71, and is screwed into the female thread 77 of the second connecting member 72. By screwing the bolt shaft portion 80b into the female thread 77, the first connecting member 71 and the second connecting member 72 are brought close to each other, and the coupling body 73 is tightened. The coupling 70 is formed by tightening the coupling body 73 with the bolt 80.

The coupling body 73 is spanned between the first connecting end 20b and the second connecting end 20c that are adjacent to each other in the longitudinal direction X. A portion of the bolt head 80a is accommodated in the bolt head accommodating portion 75. The first connecting end 20b and the second connecting end 20c are sandwiched between the housing recess 79 of the first connecting member 71 and the housing recess 79 of the second connecting member 72. Thereby, the countershafts 20 are connected to each other. Therefore, the coupling 70 connects the adjacent countershafts 20 by tightening the coupling body 73, which spans the ends of the adjacent countershafts 20, with the bolt 80. All the counter shafts 20 and detection shafts 60 included in the fiber bundle focusing device 10 are connected by a coupling 70. Therefore, all the countershafts 20 and the detection shafts 60 rotate together.

Regarding the countershaft 20, the position of one point in the circumferential direction of the countershaft 20, that is, the rotational position changes in the rotational direction as the countershaft 20 rotates. The position of one point in the circumferential direction of the coupling 70, that is, the rotational position, changes in the rotational direction as the countershaft 20 rotates. All the couplings 70 connect the countershafts 20 with the bolt head accommodating portions 75 aligned in the rotational direction of the countershafts 20. In other words, the rotational positions of all of the plurality of couplings 70 are aligned.

As shown in FIG. 1, all the couplings 70 are arranged such that the positions of the bolt head accommodating parts 75 in the rotational direction of the countershaft 20, that is, the rotational positions, are aligned with respect to the detected surface 60c of the detection shaft 60. There is. Specifically, the direction in which the detected surface 60c faces and the direction in which the bolt head accommodating portion 75 faces are the same. Therefore, when the detection shaft 60 is in the rotational position and the detected surface 60c faces forward, the bolt head accommodating portion 75 of each coupling 70 faces forward.

Therefore, when the operator can visually recognize the bolt head accommodating portion 75 of one coupling 70 when viewed from the front of the fiber bundle focusing device 10, the bolt head accommodating portion 75 of all the remaining couplings 70 can also be checked. It is visible to workers.

To connect the countershafts 20 to each other using the coupling 70, the bolt shaft portion 80b is inserted into the insertion hole 76 through the bolt head accommodating portion 75, and then the operating tool 90 is inserted into the operating hole 80c of the bolt head 80a. Furthermore, it is necessary to operate the operating tool 90 to screw the bolt shaft portion 80b into the female thread 77. To release the connection between the countershafts 20 by the coupling 70, insert the operating tool 90 into the operating hole 80c of the bolt head 80a, operate the operating tool 90, and pull out the bolt shaft 80b from the female thread 77. There is a need.

If the bolt head accommodating portion 75 is not arranged within a predetermined operating range, the operator will be unable to operate the bolt 80 using the operating tool 90 from the front side of the fiber bundle convergence device 10. For example, there is a case where the bolt head accommodating portion 75 is hidden behind the rotating shaft 12. Therefore, one end of the operating range is a position below the rotating shaft 12 where the bolt head accommodating portion 75 opens forward so that it is not hidden by the rotating shaft 12, as shown in FIG. Here, "toward the front" is not limited to the horizontal direction, and includes a case where the operating tool 90 is slightly upward from the horizontal direction as long as it does not interfere with the rotating shaft 12. As shown in FIG. 5, the other end of the operating range is set at a position where the bolt head accommodating portion 75 opens forward and diagonally downward. Note that the position shown in FIG. 4 and the position shown in FIG. 5 are shifted by 90 degrees. The other end of the operating range may be appropriately set within a range where the operating tool 90 does not interfere with a structure located below the operating tool 90, such as a suction cleaning device. The operation range is a range in which the bolt 80 can be operated on the coupling body 73 from the front of the fiber bundle focusing device 10.

<Mounting jig>
As shown in FIG. 7, a mounting jig 83 is used when connecting the countershafts 20 using the coupling 70. The attachment jig 83 is used when attaching the coupling 70 to the countershaft 20 while aligning its position in the circumferential direction. The mounting jig 83 is used by being attached to the countershaft 20. The mounting jig 83 includes a jig main body 84, a first protrusion 85, and a second protrusion 86. The jig main body 84 includes a first end surface 84a and a second end surface 84b. The first end surface 84a and the second end surface 84b are end surfaces of the jig main body 84 in the axial direction.

As shown in FIG. 6, the jig main body 84 includes a mounting recess 84c extending in the axial direction of the jig main body 84. As shown in FIG. The mounting recess 84c is a recess extending in the axial direction of the jig main body 84. The mounting recess 84c is open at both ends of the jig main body 84 in the axial direction. When looking at the jig main body 84 in the axial direction, each of the first end surface 84a and the second end surface 84b is approximately C-shaped. The jig main body 84 includes an opening edge 84d extending in the axial direction so as to sandwich the mounting recess 84c. The pair of opening edges 84d are parallel. The direction in which the pair of opening edges 84d face each other with the mounting recess 84c in between is defined as the width direction of the jig main body 84. Further, in the jig main body 84, the direction from one of the pair of opening edges 84d toward the other along the first end surface 84a and the second end surface 84b is defined as the circumferential direction. A position moved from the pair of opening edges 84d by an equal distance in the circumferential direction is defined as an intermediate position P.

The first protrusion 85 is provided on the first end surface 84a of the jig main body 84. The first protrusion 85 is arranged closer to one opening edge 84d than the intermediate position P on the first end surface 84a. The first protrusion 85 has a cylindrical shape that protrudes in the axial direction from the first end surface 84a. The mounting recess 84c is mounted from above the shaft body 20a, and the first protrusion 85 is brought into contact with the shaft groove 53. Then, the mounting jig 83 can be positioned so that the mounting recess 84c opens downward, and the relative rotation of the mounting jig 83 with respect to the countershaft 20 is restricted.

The second protrusion 86 is provided at an intermediate position P of the second end surface 84b of the jig main body 84. The second protrusion 86 is plate-shaped. The thickness direction of the second protrusion 86 is the same as the width direction of the jig main body 84.

<How to use the mounting jig>
As shown in FIGS. 7 and 8, the mounting recess 84c is mounted from above the second connecting end 20c of one of the adjacent countershafts 20. At this time, the first connecting end 20b of another countershaft 20 faces the second connecting end 20c. Then, a mounting jig 83 is attached to the second connecting end 20c, and the first protrusion 85 is brought into contact with the surface where the shaft groove 53 is formed. Then, the mounting jig 83 is positioned so that the mounting recess 84c opens downward. At the same time, relative rotation of the mounting jig 83 with respect to the countershaft 20 is restricted. At this time, the second protrusion 86 is located at the top of the second end surface 84b, and the thickness direction of the second protrusion 86 corresponds to the longitudinal direction of the spinning machine 100.

Next, as shown in FIG. 9, the first connecting member 71 is placed in front of the second protrusion 86, and the second connecting member 72 is placed behind the second protrusion 86, so that the first connecting member 71 and The second protrusion 86 is sandwiched between the second connecting member 72 . At this time, the second connecting end 20c and the first connecting end 20b are sandwiched between the first connecting member 71 and the second connecting member 72. When the mating surface 74 of the first connecting member 71 is brought into contact with the front surface of the second protrusion 86, the first connecting member 71 can be positioned so that the bolt head accommodating portion 75 of the first connecting member 71 faces forward. Further, when the mating surface 74 of the second connecting member 72 is brought into contact with the rear surface of the second protrusion 86, the second connecting member 72 can be positioned so that the female thread 77 of the second connecting member 72 faces rearward.

Further, one end surface in the axial direction of the first connecting member 71 and the second connecting member 72 is brought into contact with the second end surface 84b. Then, the accommodating recess 79 of the first connecting member 71 and the accommodating recess 79 of the second connecting member 72 face each other, and the mating surfaces 74 of the first connecting member 71 and the mating surfaces 74 of the second connecting member 72 face each other. Therefore, the insertion hole 76 of the first connecting member 71 and the female thread 77 of the second connecting member 72 also face each other.

Then, when the bolt shaft portion 80b inserted into the insertion hole 76 through the bolt head accommodating portion 75 is screwed into the female thread 77, the first connecting member 71 and the second connecting member 72 can be connected by the bolt 80. As a result, the first connecting end 20b and the second connecting end 20c accommodated in the accommodation recess 79 can be sandwiched between the coupling body 73, and the countershafts 20 can be connected to each other by the coupling 70. By repeating this operation, the countershafts 20 can be connected to each other while aligning the rotational positions of all the couplings 70.

<Rotation position detection section>
As shown in FIG. 1, the rotational position detection section 30 is arranged close to the out-end head 101. The rotational position detection section 30 faces the second end 60b of the detection shaft 60. The rotational position detection unit 30 is, for example, a proximity sensor. The rotational position detection unit 30 detects the approach of the detected surface 60c of the detection shaft 60 in a non-contact manner. The rotational position detection unit 30 outputs a detection signal every time it detects the detected surface 60c. The rotational position detection section 30 outputs a detection signal at an interval of one pulse per one rotation of the detection shaft 60. As the rotational speed of the countershaft 20, that is, the rotational speed of the countershaft drive motor 103 increases, the output interval of the detection signal by the rotational position detection section 30 becomes shorter. As the rotational speed of the rotational position sensor 30 decreases, the output interval of detection signals by the rotational position detection section 30 becomes longer. Therefore, the detection signal output by the rotational position detection section 30 is rotational position information of the countershaft 20. Therefore, the rotational position detection section 30 outputs rotational position information of the countershaft 20 by detecting the detected surface 60c.

As described above, in the rotational position of the detection shaft 60, when the detected surface 60c faces forward, the bolt head accommodating portion 75 of each coupling 70 faces forward. Therefore, at the time when the rotational position detection section 30 outputs the detection signal, the bolt head accommodating section 75 of each coupling 70 is in a position facing forward. In other words, the rotational position of each coupling 70 is such that the bolt head accommodating portion 75 faces forward and is located within the operating range.

<Control device>
The control device 40 includes a processor (not shown) and a storage unit. Examples of the processor include a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), and a DSP (Digital Signal Processor). The storage unit includes RAM (Random Access Memory) and ROM (Read Only Memory). The storage unit stores program codes or instructions configured to cause the processor to perform processing. Storage or computer-readable media includes any available media that can be accessed by a general purpose or special purpose computer. The control device 40 may be configured by a hardware circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The control device 40, which is a processing circuit, may include one or more processors that operate according to a computer program, one or more hardware circuits such as ASIC or FPGA, or a combination thereof.

The control device 40 receives the detection signal output from the rotational position detection section 30 and controls the drive of the countershaft drive motor 103 . The control device 40 outputs a drive signal to the countershaft drive motor 103 to drive the countershaft drive motor 103. By driving the countershaft drive motor 103, the countershaft 20 rotates and the fiber bundle focusing device 10 is driven.

An operating section 41 is connected to the control device 40 . Examples of the operation unit 41 include a dial, physical buttons, and a touch panel. In this embodiment, the operation unit 41 is a physical button. The operating section 41 is operated to temporarily or completely stop the driving of the fiber bundle focusing device 10 and to stop the driving of the countershaft 20. The operation unit 41 outputs a stop command to the control device 40 to stop driving the countershaft 20. The operating unit 41 may be installed in the gear end head 102 or the out-end head 101, or may be installed in the upper control device of the spinning machine 100, as long as it can perform an operation to stop driving the countershaft 20. You can.

When the fiber bundle focusing device 10 is being driven, a detection signal from the rotational position detection section 30 is periodically input to the control device 40 . The control device 40 controls the rotation speed of the countershaft drive motor 103 based on the detection signal.

When a stop command is output from the operation unit 41 and also input to the control device 40, the control device 40 switches control of the countershaft drive motor 103 from rotation speed control to position control. Specifically, when a stop command is input from the operation unit 41, the control device 40 determines that when the rotation of the counter shaft 20 is stopped based on the detection signal input from the rotation position detection unit 30, the control device 40 is configured to The driving of the countershaft 20 is controlled so that the coupling 70 is positioned. Specifically, when the stop command is input, the control device 40 detects the rotational position of the countershaft 20 based on the detection signal from the rotational position detection section 30, and detects the rotational position of the countershaft 20 when the countershaft 20 is at a predetermined rotational position. Control the position so that it stops at . More specifically, the control device 40 controls the drive of the countershaft drive motor 103 so that the coupling 70 stops within the operating range.

In the present embodiment, as shown in FIGS. 4 and 5, below the rotating shaft 12, the bolt head accommodating portion 75 extends from the position where it opens toward the front to the position where it opens diagonally downward. In other words, the control device 40 controls the drive of the countershaft drive motor 103 so that the bolt head accommodating portion 75 is located between one end of the operating range and the other end.

[Operation of the first embodiment]
For example, for maintenance of the fiber bundle focusing device 10, the driving gear 21, the shaft bearing 52, the countershaft 20, etc. may be replaced after the fiber bundle focusing device 10 is temporarily stopped.

The worker operates the operation unit 41. When the control device 40 receives a stop command from the operation unit 41, the control device 40 switches the control of the countershaft drive motor 103 from rotation speed control to position control. The control device 40 performs position control to stop the countershaft 20 at a predetermined rotational position based on the detection signal from the rotational position detection section 30. When the countershaft 20 stops rotating, the bolt head accommodating portions 75 of all the couplings 70 are located within the operating range. Therefore, the operator can operate the bolt head 80a accommodated in the bolt head accommodating portion 75 from the front of the fiber bundle convergence device 10 using the operating tool 90. Then, the bolt 80 is operated by the operating tool 90 to remove the bolt 80 from the female thread 77, and the bolt 80 is removed from the coupling body 73 through the insertion hole 76 and the bolt head accommodating portion 75. As a result, since the coupling body 73 can be disassembled into the first connecting member 71 and the second connecting member 72, the connection between the countershafts 20 by the coupling 70 can be released. Similar processing is performed for the other couplings 70 as well. Then, the countershaft 20 can be moved in the longitudinal direction X, and the drive gear 21, shaft bearing 52, countershaft 20, etc. can be replaced.

After the maintenance is completed, the moved countershafts 20 are returned to their original positions, and the countershafts 20 are again connected to each other by the coupling 70. Since the countershaft 20 is stopped so that the detected surface 60c faces forward, the bolt head accommodating portions 75 of the couplings 70 other than the removed coupling 70 face forward.

Then, the coupling 70 is attached to the countershaft 20 using the attachment jig 83, and the countershafts 20 are connected to each other. At this time, the operator can operate the operating tool 90 from the front of the fiber bundle focusing device 10. Then, by operating the bolt 80 using the operating tool 90, the bolt shaft portion 80b is inserted into the insertion hole 76 through the bolt head accommodating portion 75, and is screwed into the female thread 77. As a result, the countershafts 20 can be connected to each other by the coupling 70 by screwing the bolt 80 into the coupling body 73.

According to the first embodiment, the following effects can be obtained.
(1-1) When the operation unit 41 is operated and a stop command is input to the control device 40, the control device 40 controls the drive of the countershaft drive motor 103 to drive the fiber bundle focusing device 10. make it stop. Then, when the countershaft 20 stops rotating, the coupling 70 is located within the operating range. Therefore, when the drive of the fiber bundle converging device 10 is stopped, the coupling 70 can be positioned at a position where the bolt 80 can be easily operated. As a result, after stopping the drive of the fiber bundle converging device 10, the bolt 80 can be easily operated with respect to the coupling body 73.

(1-2) The fiber bundle focusing device 10 includes a plurality of couplings 70. The rotational positions of all of the plurality of couplings 70 are aligned. Therefore, when a stop command is output from the operation unit 41 and the countershaft 20 stops rotating, all the couplings 70 are located within the operation range. Therefore, the bolt 80 can be operated with respect to the coupling body 73 regardless of which coupling 70 is used.

(1-3) The detected surface 60c is provided on the detection shaft 60. For example, compared to the case where another countershaft 20 having a detection surface is connected to the countershaft 20 closest to the out-end head 101, the fiber bundle focusing device 10 can be made smaller in the longitudinal direction X.

(1-4) When the fiber bundle focusing device 10 is stopped by the control device 40, the coupling 70 can be positioned within the operation range. Therefore, when the fiber bundle concentrator 10 is stopped, the bolt 80 can be operated with respect to the coupling body 73. Therefore, the bolt 80 can be operated even when the operation of the fiber bundle converging device 10 is stopped, except for maintenance of the fiber bundle converging device 10. Therefore, when it becomes necessary to perform maintenance while the fiber bundle convergence device 10 is out of operation, the maintenance can be performed without rotating the countershaft 20 again.

(1-5) By using the mounting jig 83, it becomes easier to align the rotational positions of the couplings 70.
(Second embodiment)
Next, a second embodiment of a fiber bundle converging device for a spinning machine will be described with reference to FIGS. 11 to 14. Note that, in the second embodiment, detailed explanations of parts similar to those in the first embodiment will be omitted.

As shown in FIG. 11, the spinning machine 100 includes a spindle drive device 111, a lifting unit 120, and a draft device 130.
The spindle drive device 111 drives the spindle 110 in order to wind up the fiber bundle F focused by the fiber bundle focusing device 10. The spindle drive device 111 includes a spindle drive motor 112, a drive pulley 113, a driven pulley 114, and a tangential belt 115 wound around both pulleys 113 and 114. The spindle 110 is driven by a spindle drive motor 112. Spindle drive motor 112 is a variable speed motor driven via inverter 116. Control device 40 controls inverter 116.

The lifting unit 120 raises and lowers the spindle 110. The elevating unit 120 includes a line shaft 121, a ring rail 122, a lappet angle (not shown) equipped with a snell wire 123, a poker pillar 124, a nut body 125, a lifting motor 126, and a driver 127. The line shaft 121 is rotatably arranged along the spindle row. A screw gear 121a is formed on the line shaft 121. Lifting motor 126 is connected to line shaft 121 via a gear mechanism (not shown). The poker pillar 124 supports a ring rail 122 that includes a ring 122a. A screw portion 124a is formed at the bottom of the poker pillar 124. The nut body 125 is screwed onto the screw portion 124a and meshed with the screw gear 121a.

When the lifting motor 126 rotates in both forward and reverse directions and the line shaft 121 rotates, the ring rail 122 is raised and lowered by the screw gear 121a, the nut body 125, and the screw portion 124a. Driver 127 drives lifting motor 126. Control device 40 controls driver 127.

During operation of the spinning machine 100, the control device 40 controls the inverter 116 and the driver 127 to control the driving of the spindle drive motor 112 and the lifting motor 126. The lifting motor 126 drives the lifting unit 120, and the ring rail 122 is raised and lowered repeatedly, and the spindle drive motor 112 drives the spindle drive device 111, causing the spindle 110 to rotate. As a result, the fiber bundle F that has passed through the fiber bundle converging device 10 is wound onto the bobbin B supported by the spindle 110.

The draft device 130 drafts the fiber bundle F. The draft device 130 includes a front roller 131 , a first draft motor 132 , a middle roller 133 , a second draft motor 134 , and a back bottom roller 135 . The back bottom roller 135 is connected to the middle roller 133 via a gear train 136. The middle roller 133 includes an apron 133a. The first driver 132a drives the first draft motor 132. The second driver 134a drives the second draft motor 134. The control device 40 controls the first driver 132a and the second driver 134a. The first draft motor 132 and the second draft motor 134 drive the draft device 130. The draft device 130 is driven by the first draft motor 132 and the second draft motor 134 .

The fiber bundle convergence device 10 is arranged in front of the draft device 130. The fiber bundle converging device 10 converges the fiber bundle F drafted by the draft device 130. A countershaft drive motor 103 drives the fiber bundle focusing device 10 . The countershaft drive motor driver 128 drives the countershaft drive motor 103. The control device 40 controls the countershaft drive motor driver 128.

The spinning machine 100 includes an input section 44.
As shown in FIG. 12, the input unit 44 includes a physical button type operation unit 41 and an activation button 46. The operation unit 41 is operated to temporarily or completely stop the operation of the spinning machine 100. The start button 46 is operated to start the stopped spinning machine 100.

A display section 45 is arranged in the input section 44 . The display unit 45 displays an operation screen IM. The operation screen IM functions as a mode setting section. The operation screen IM is a screen for the operator to perform an operation to select the first maintenance mode M1 and the second maintenance mode M2 as maintenance modes for the spinning machine 100. On the operation screen IM, an ON button B1 for selecting the first maintenance mode M1 and an OFF button B2 for deselecting the first maintenance mode M1 are displayed.

When the ON button B1 is operated and the first maintenance mode M1 is selected, the control device 40 sets the first maintenance mode M1 to be executable. When the OFF button B2 is operated and the first maintenance mode M1 is deselected, the control device 40 sets the normal stop mode M3 to be executable. Therefore, the operation screen IM, which is a mode setting section, selects the first maintenance mode M1 or the normal stop mode M3 and sets it to be executable.

Further, on the operation screen IM, an ON button B3 for selecting the second maintenance mode M2 and an OFF button B4 for deselecting the second maintenance mode M2 are displayed. When the ON button B3 is operated and the second maintenance mode M2 is selected, the control device 40 sets the second maintenance mode M2 to be executable. Therefore, the operation screen IM serving as the mode setting section selects the second maintenance mode M2 and sets it to be executable. When the OFF button B4 is operated, the control device 40 sets the second maintenance mode M2 to OFF. Therefore, the operation screen IM serving as the mode setting section selects the second maintenance mode M2 and sets it to be executable.

The input section 44 is provided with a parameter input section 47 . The parameter input section 47 is a section through which an operator inputs spinning parameters of the spinning machine 100. The parameter input section 47 is of a dial type. Note that the parameter input section 47 may be displayed on the operation screen IM, or may be a physical button other than a dial type.

As shown in FIG. 11, during operation of the spinning machine 100, the control device 40 controls the spindle drive motor 112 via the inverter 116, and controls each driver 127, 128, 132a, 134a to drive each motor 103, 126. , 132, 134. During operation of the spinning machine 100, the control device 40 synchronizes and controls the fiber bundle focusing device 10, the spindle drive device 111, the lifting unit 120, and the drafting device 130 according to the spinning parameters input by the parameter input section 47. do. Specifically, the control device 40 synchronizes and controls the motors 103, 112, 126, 132, and 134 in accordance with the spinning parameters input by the parameter input section 47. Therefore, the spinning machine 100 includes a spindle drive motor 112 that drives a spindle 110 for winding up the fiber bundle F collected by the fiber bundle collection device 10. In this embodiment, the spinning machine 100 includes a first draft motor 132 and a second draft motor 134 that drive a draft device 130 that drafts the fiber bundle F, the spindle drive motor 112, and a lifting unit 120 that lifts and lowers the spindle 110. and a driving lifting motor 126.

The control device 40 includes an operation screen IM as the mode setting section, and also includes a synchronization control section 401, a detection speed setting section 402, and a display control section 403. The display control unit 403 causes the display unit 45 to display the operation screen IM.

The synchronization control unit 401 synchronizes and controls the countershaft drive motor 103, spindle drive motor 112, lifting motor 126, first draft motor 132, and second draft motor 134. Note that "synchronization" does not mean that the rotational speeds of the motors 103, 112, 126, 132, and 134 are all the same, but that the speed ratio is constant. In other words, "to control synchronously" means that the synchronous control unit 401 controls the countershaft drive motor 103, the spindle drive This is to control each of the motor 112, lifting motor 126, first draft motor 132, and second draft motor 134 to be driven at appropriate rotational speeds.

Furthermore, when executing the first maintenance mode M1, the synchronization control unit 401 adjusts the spindle drive motor 112 to the countershaft drive motor 103 in order to synchronize and drive the fiber bundle focusing device 10 and the spindle drive device 111. Drive synchronously. The synchronization control unit 401 controls the countershaft drive motor driver 128 and the inverter 116 to synchronize the spindle drive motor 112 with the countershaft drive motor 103 .

The detected speed setting section 402 sets the detected speed V2c of the countershaft drive motor 103 and the detected speed V2s of the spindle drive motor 112 in the synchronous control section 401. Each of the detected speeds V2c and V2s is a preset constant rotation speed. The detected speed V2c of the countershaft drive motor 103 is set to a sufficiently small value so that the rotation speed is lower than the rotation speed V1c of the countershaft drive motor 103 at the time when the stop command is input from the operation unit 41. . The detected speed V2s of the spindle drive motor 112 is set to a sufficiently small value so that the rotation speed is lower than the rotation speed V1s of the spindle drive motor 112 at the time when the stop command is input from the operation unit 41. Furthermore, the detected speeds V2c and V2s are low rotational speeds that allow the countershaft drive motor 103 and the spindle drive motor 112 to be stopped quickly. The lower the detected speed V2s of the spindle drive motor 112 is, the more preferable it is. An example of the detected speed V2s of the spindle drive motor 112 is the lowest rotational speed of the spindle drive motor 112 that can be controlled by the inverter 116.

The detected speed V2c of the countershaft drive motor 103 is lower than the detected speed V2s of the spindle drive motor 112. The detected speed V2c of the countershaft drive motor 103 is a rotational speed at which the countershaft 20 can be stopped at a predetermined rotational position with a slight rotation after the rotational position detection section 30 outputs the detection signal. The predetermined rotational position is a position where the coupling 70 stops within the operating range.

For example, when the rotational position detection section 30 detects the leading edge in the rotational direction among both edges of the detected surface 60c in the rotational direction of the countershaft 20, the rotational position detection section 30 outputs a detection signal. When the countershaft 20 is rotating at the detection speed V2c, after the detection signal is output, the countershaft 20 immediately after the trailing edge of the detection surface 60c in the rotational direction passes the rotational position detection section 30. stops.

The detected speed V2c of the countershaft drive motor 103 and the detected speed V2s of the spindle drive motor 112 are stored in the storage section of the control device 40.
<1st maintenance mode>
The first maintenance mode M1 is executed while the spinning machine 100 is in operation. The first maintenance mode M1 is a mode in which the spinning machine 100 in operation is stopped and the coupling 70 is positioned within the operating range when the countershaft 20 stops rotating.

When the ON button B1 for the first maintenance mode M1 is operated on the operation screen IM of the display unit 45, the control device 40 is set to be able to execute the first maintenance mode M1. When the first maintenance mode M1 is set to be executable, the detected speed setting unit 402 acquires the detected speed V2c of the countershaft drive motor 103 and the detected speed V2s of the spindle drive motor 112 from the storage unit, and the synchronous control unit 401 Set to .

In the first maintenance mode M1, the synchronization control unit 401 drives each of the countershaft drive motor 103 and the spindle drive motor 112 to synchronously decelerate from the rotational speed during operation to the detected speeds V2c and V2s, and After deceleration, the countershaft drive motor 103 and spindle drive motor 112 are driven in synchronization at the detected speeds V2c and V2s.

In the first maintenance mode M1, the synchronization control unit 401 stops driving each of the countershaft drive motor 103 and the spindle drive motor 112 at the time when the rotational position detection unit 30 detects the detected surface 60c. In the first maintenance mode M1, when the countershaft drive motor 103 is stopped by the synchronization control unit 401, the fiber bundle focusing device 10 is stopped and the countershaft 20 rotates slightly due to inertia. Then, when the countershaft 20 stops rotating, the coupling 70 is located at a position where the bolt 80 can be easily operated. In other words, the coupling 70 is located within the operating range.

Furthermore, when the synchronization control unit 401 stops driving the spindle drive motor 112, the spindle 110 rotates slightly due to inertia and then stops. Therefore, when the first maintenance mode M1 is executed, the countershaft 20 stops so that the coupling 70 is located within the operating range, and the spindle 110 immediately follows and stops.

<Normal stop mode>
The normal stop mode M3 is executed while the spinning machine 100 is in operation.
In the normal stop mode M3, when a stop command is output from the operation unit 41, the synchronous control unit 401 synchronously decelerates each of the countershaft drive motor 103 and the spindle drive motor 112. The synchronization control unit 401 controls the countershaft drive motor driver 128 and also controls the inverter 116. Then, the synchronization control unit 401 controls the inverter 116 to stop the spindle drive motor 112, and then controls the countershaft drive motor driver 128 to stop the countershaft drive motor 103. That is, in the normal stop mode M3, the control device 40 causes the spindle drive motor 112 to follow the countershaft drive motor 103, and stops the spindle drive motor 112 and the countershaft drive motor 103. When the OFF button B2 of the first maintenance mode M1 is operated on the operation screen IM of the display unit 45, the control device 40 is set to be able to execute the normal stop mode M3.

FIG. 13 is a graph showing the relationship between the rotational speed of the spindle 110 and the countershaft 20 and time in the normal stop mode M3. The vertical axis of the graph shows the rotational speed [rpm] of the spindle 110 and the countershaft 20, and the horizontal axis of the graph shows time t. Further, the solid line graph in FIG. 13 is the spindle 110. The dashed line graph in FIG. 13 is the countershaft 20.

As shown in FIG. 13, in the normal stop mode M3, when the operation unit 41 is operated and a stop command is input at time t1 during operation of the spinning machine 100, the synchronous control unit 401 controls the rotation speed at the time t1. The inverter 116 is controlled to start decelerating the spindle drive motor 112 from V1s. Furthermore, the synchronization control unit 401 controls the countershaft drive motor driver 128 to start decelerating the countershaft drive motor 103 from the rotational speed V1c at the time t1. Then, the rotational speed of the spindle 110 and the rotational speed of the countershaft 20 gradually decrease. Then, the synchronization control unit 401 controls the countershaft drive motor driver 128 and the inverter 116 so that the countershaft drive motor 103 stops at the same time or almost simultaneously when the spindle drive motor 112 stops. Then, the rotation of the countershaft 20 is stopped at the same time or substantially at the same time as the rotation of the spindle 110 is stopped. That is, the rotation of the countershaft 20 is made to follow the rotation of the spindle 110 so that the fiber bundle F is not cut when the rotation of the spindle 110 is stopped.

[Operation of the second embodiment]
FIG. 14 is a graph showing the relationship between the rotational speed of the spindle 110 and the countershaft 20 and time in the first maintenance mode M1. The vertical axis of the graph shows the rotational speed [rpm] of the spindle 110 and the countershaft 20, and the horizontal axis of the graph shows time t. Further, the solid line graph in FIG. 14 is the spindle 110. The dashed line graph in FIG. 14 is the countershaft 20.

Now, as shown in FIG. 14, in the spinning machine 100 set to be able to execute the first maintenance mode M1 on the operation screen IM, when a stop command is output from the operation section 41 at time t1 during operation, the synchronous control section 401 controls the inverter 116 to start decelerating the spindle drive motor 112 from the rotational speed V1s at the time t1. Furthermore, the synchronization control unit 401 controls the countershaft drive motor driver 128 to start decelerating the countershaft drive motor 103 from the rotational speed V1c at the time t1. Then, the rotational speed of the spindle 110 and the rotational speed of the countershaft 20 gradually decrease. At this time, the synchronization control unit 401 may synchronize and decelerate other motors in addition to the countershaft drive motor 103 and the spindle drive motor 112.

As the rotational speeds of the countershaft drive motor 103 and the spindle drive motor 112 decrease, the interval between the detection signals output from the rotational position detection section 30 gradually widens. Thereafter, when the rotational speed V1c of the countershaft drive motor 103 and the rotational speed V1s of the spindle drive motor 112 are each reduced to the detected speeds V2c and V2s of the respective motors 103 and 112, the synchronous control unit 401 controls the countershaft drive The motor 103 and the spindle drive motor 112 are driven synchronously at detected speeds V2c and V2s. Then, the countershaft drive motor 103 and the spindle drive motor 112 rotate at a constant rotational speed at the respective detected speeds V2c and V2s.

Then, after the countershaft drive motor 103 starts driving at the detected speed V2c, when a detection signal from the rotational position detection section 30 is input to the control device 40 for the first time at time t2, the synchronization control section 401 controls the countershaft The drive motor 103 and spindle drive motor 112 are synchronized and stopped. Then, the countershaft drive motor 103 and the spindle drive motor 112 rotate slightly due to inertia and then stop. The countershaft 20 and spindle 110 also rotate slightly and then stop. Then, when the countershaft 20 stops rotating and the spindle 110 stops rotating, the coupling 70 stops so as to be located within the operating range.

According to the second embodiment, the following effects can be obtained.
(2-1) When the first maintenance mode M1 is executed, based on the rotational position of the countershaft 20, the countershaft 20 is stopped and the coupling 70 is positioned within the operation range, and the countershaft 20 is followed. The spindle 110 can then be stopped. Since each of the countershaft drive motor 103 and the spindle drive motor 112 stops after being decelerated to the detected speeds V2c and V2s, rotation due to inertia after stopping can be reduced. As a result, even if the countershaft 20 is stopped at a desired position, the difference in rotational speed relative to the spindle 110 can be reduced, so that breakage of the fiber bundle F can be suppressed.

(2-2) The detection speeds V2c and V2s are set to constant speeds. Therefore, during driving at the detection speeds V2c and V2s, the countershaft drive motor 103 and spindle drive motor 112 are rotated at a constant and slight rotation no matter at what timing a detection signal is output from the rotational position detection section 30. It can be stopped. For example, when the detection signal is output while the countershaft drive motor 103 and the spindle drive motor 112 are gradually decelerating, the countershaft 20 and the spindle 112 may be affected depending on the timing at which the detection signal is output. It is possible to eliminate variations in the amount of rotation. As a result, it is possible to suppress the fiber bundle F from breaking when the first maintenance mode M1 is executed.

(2-3) The detected speeds V2c and V2s are rotational speeds at which the countershaft 20 stops with almost no rotation due to inertia after the countershaft drive motor 103 is stopped. Therefore, after the countershaft drive motor 103 is stopped, it is easy to position the coupling 70 within the operating range.

(2-4) The operation screen IM serving as a mode setting section can be set to enable execution of the first maintenance mode M1 or the normal stop mode M3 by operating the operation screen IM. Therefore, for example, when maintenance of the fiber bundle convergence device 10 is not required, the spinning machine 100 is stopped in the normal stop mode M3, and when maintenance of the fiber bundle convergence device 10 is required, the spinning machine 100 is stopped in the first maintenance mode. It can be stopped with M1. Therefore, since the method of stopping the spinning machine 100 can be selected depending on the state of the fiber bundle converging device 10, it is possible to meet the operator's needs regarding the use of the spinning machine 100.

(Third embodiment)
Next, a third embodiment of a fiber bundle converging device for a spinning machine will be described with reference to FIG. 15. Note that, in the third embodiment, detailed explanations of parts similar to those in the first and second embodiments will be omitted.

In the third embodiment, the second maintenance mode M2 will be described.
<Second maintenance mode>
The second maintenance mode M2 is executed while the spinning machine 100 is stopped. That is, the second maintenance mode M2 is executed when it becomes necessary to perform maintenance on the fiber bundle focusing device 10. The second maintenance mode M2 is a mode in which the coupling 70 is positioned within the operating range when the spinning machine 100 is stopped and the rotation of the counter shaft 20 is stopped after the stopped spinning machine 100 is started.

When the ON button B3 for the second maintenance mode M2 is operated on the operation screen IM of the display unit 45, the second maintenance mode M2 is set to be executable in the control device 40. When the second maintenance mode M2 is set to be executable, the detected speed setting unit 402 acquires the detected speeds V2c and V2s of the countershaft drive motor 103 and the spindle drive motor 112 from the storage unit and sets them in the synchronous control unit 401. do.

As shown in FIG. 15, also in the third embodiment, the detected speeds V2c and V2s are the respective rotational speeds of the countershaft drive motor 103 and the spindle drive motor 112, and 112. The detected speeds V2c and V2s are set to values that are sufficiently small so that the rotational speeds V1c and V1s of the spinning machine 100 in operation are lower than the rotational speeds V1c and V1s at the time when the stop command is input from the operation unit 41. Ru.

In the second maintenance mode M2, when the start button 46 is operated at time ts, an execution command for the second maintenance mode M2 is input to the control device 40. Then, the synchronization control unit 401 starts the countershaft drive motor 103 and the spindle drive motor 112 and drives them synchronously. After starting the spinning machine 100, the synchronization control unit 401 synchronizes the countershaft drive motor 103 and the spindle drive motor 112 and drives them at the detected speeds V2c and V2s. In the second maintenance mode M2, the synchronous control unit 401 stops driving each of the countershaft drive motor 103 and the spindle drive motor 112 at time t2 when the rotational position detection unit 30 detects the detected surface 60c. In the second maintenance mode M2, when the countershaft drive motor 103 is stopped by the synchronization control unit 401, the fiber bundle focusing device 10 is stopped and the countershaft 20 rotates slightly due to inertia. Then, when the countershaft 20 stops rotating, the coupling 70 is located at a position where the bolt 80 can be easily operated. In other words, the coupling 70 is located within the operating range.

Furthermore, when the synchronization control unit 401 stops driving the spindle drive motor 112, the spindle 110 rotates slightly due to inertia and then stops. Therefore, when the second maintenance mode M2 is executed, the countershaft 20 stops so that the coupling 70 is located within the operation range, and the spindle 110 immediately follows and stops.

FIG. 15 is a graph showing the relationship between the rotational speed of the spindle 110 and the countershaft 20 and time in the second maintenance mode M2. The vertical axis of the graph shows the rotational speed [rpm] of the spindle 110 and the countershaft 20, and the horizontal axis of the graph shows time t. Further, the solid line graph in FIG. 15 is the spindle 110. The dashed line graph in FIG. 15 is the countershaft 20.

[Operation of the third embodiment]
Now, as shown in FIG. 15, when the second maintenance mode M2 is set to be executable on the operation screen IM in the spinning machine 100 after stopping in the normal stop mode M3, the start button 46 is pressed at time ts. When operated, an execution command for the second maintenance mode M2 is input. Then, the synchronization control unit 401 drives the countershaft drive motor 103 and the spindle drive motor 112 in synchronization, and accelerates them at a constant acceleration to the detected speeds V2c and V2s. Then, when the rotational speeds of the countershaft drive motor 103 and the spindle drive motor 112 reach the detected speeds V2c and V2s, the synchronization control unit 401 synchronizes the countershaft drive motor 103 and the spindle drive motor 112 at the detected speeds V2c and V2s. drive.

After the countershaft drive motor 103 and the spindle drive motor 112 start driving at the detected speeds V2c and V2s, when a detection signal from the rotational position detection unit 30 is input to the control device 40 for the first time at time t2, synchronous control is started. The unit 401 synchronizes the countershaft drive motor 103 and the spindle drive motor 112 and stops driving them. Then, the countershaft drive motor 103 and the spindle drive motor 112 rotate slightly due to inertia and then stop. The countershaft 20 and spindle 110 also rotate slightly and then stop. Then, when the countershaft 20 stops rotating and the spindle 110 stops rotating, the coupling 70 stops so as to be located within the operating range.

According to the third embodiment, the following effects can be obtained.
(3-1) By executing the second maintenance mode M2, the coupling 70 can be positioned within the operating range. Therefore, even if it is desired to perform maintenance on the fiber bundle converging device 10 when the spinning machine 100 is stopped, by executing the second maintenance mode M2, the countershaft 20 can be positioned at a position where maintenance can be easily performed. . Even if the countershaft 20 is stopped at a desired position, the difference in rotation speed relative to the spindle 110 can be reduced, so it is possible to suppress the fiber bundle F from breaking when the second maintenance mode M2 is executed. .

Each embodiment can be modified and implemented as follows. Each embodiment and the following modification examples can be implemented in combination with each other within a technically consistent range.
- As shown in FIG. 16, the detected surface 71c may be provided on the coupling 70. The detected surface 71c may be provided by forming a flat surface on the outer surface of the first connecting member 71, or may be provided by forming a flat surface on the outer surface of the second connecting member 72.

○The detected portion does not have to be a surface such as the detected surface 60c. For example, it may be a groove or a hole provided in the counter shaft 20 or the detection shaft 60. In short, as long as the rotational position detection section 30 can detect the rotational position of the countershaft 20, the type of rotational position detection section 30 and the type of the detected part may be changed.

o If the fiber bundle concentrator 10 includes two countershafts 20, only one coupling 70 may be provided.
The coupling body 73 of the coupling 70 does not need to be divided into the first connecting member 71 and the second connecting member 72. For example, the coupling body 73 may be C-shaped when viewed in the axial direction.

○The detection shaft 60 may be replaced with the counter shaft 20. In this case, a detected portion is provided at the second connecting end 20c of the countershaft 20. The position of the detected part in the longitudinal direction X may be set arbitrarily, such as at the end of the longitudinal direction X, or at the center. In this case, the position of the rotational position detection unit 30 is changed depending on the position of the detected part.

○The operation range may be changed as appropriate. For example, the bolt head accommodating portion 75 may be rotated downward by 45 degrees from the position shown in FIG. 4 . In short, as long as the bolt 80 is at a position where the operator can operate it, the operation range may be changed as appropriate.

○The number of fiber bundle focusing devices 10 and the number of countershafts 20 may be changed as appropriate. In this case, depending on the number of fiber bundle converging devices 10, the spinning machine 100 may include a middle head.

The fiber bundle focusing device 10 may include a plurality of detected parts, and in this case, the rotational position detection part 30 is arranged in accordance with each detected part. For example, the rotational positions of the plurality of couplings 70 are made to be different. A detected portion is provided on each countershaft 20 or coupling 70, and a rotational position detection portion 30 is provided in accordance with each detected portion.

The axial lengths of the first connecting end 20b and the second connecting end 20c of the countershaft 20 may be changed as appropriate.
○If the rotational position detection section 30 can detect the detected surface 60c, the method of supporting the detection shaft 60, the arrangement method of the rotational position detection section 30, the position of the detection surface 60c, and the position of the rotational position detection section 30 are It may be changed as appropriate.

○ In the first maintenance mode M1 and the second maintenance mode M2, while driving at the detection speeds V2c and V2s, the time point at which driving of each of the countershaft drive motor 103 and the spindle drive motor 112 is stopped is determined by the rotational position detection unit 30. It does not have to be the first time the detected surface 60c is detected, and may be changed arbitrarily. For example, it may be the time when the detected surface 60c is detected by the rotational position detection section 30 for the second time.

In the spinning machine 100, the draft device 130 and the lifting unit 120 may be driven by the spindle drive motor 112. In this case, the draft device 130 does not include the first draft motor 132 and the second draft motor 134, and the elevating unit 120 does not include the lifting motor 126.

F... Fiber bundle, 10... Fiber bundle convergence device, 11... Condensation unit, 12... Rotating shaft, 13... Delivery bottom roller, 14... Suction section, 15... Ventilation apron, 16... Delivery top roller, 20... Counter shaft , 20b...first connection end, 20c...second connection end, 30...rotational position detection section, 40...control device, 41...operation section, 60...detection shaft, 60c, 71c...as detected section Detected surface, 70... Coupling, 73... Coupling body, 80... Bolt, 103... Counter shaft drive motor, 110... Spindle, 112... Spindle drive motor, 401... Synchronous control section, 402... Detection speed setting section, IM...Operation screen as a mode setting section.

Claims (6)

A delivery bottom roller that is provided on a rotating shaft and conveys the fiber bundle, a suction section that exerts a suction action on the fiber bundle, a ventilation apron that rotates along the suction section, and the delivery that comes into contact through the ventilation apron. a condensing unit having a delivery top roller that rotates together with a very bottom roller and converging the drafted fiber bundle;
a countershaft for rotating the rotating shaft, a plurality of the countershafts being lined up in the axial direction of the countershaft;
a countershaft drive motor that drives the countershaft;
a coupling that connects the axially adjacent countershafts and rotates integrally with the countershaft,
The coupling connects the countershafts by tightening a coupling body that spans the ends of the adjacent countershafts with a bolt,
a detected part provided on the countershaft or the coupling for detecting the rotational position of the countershaft;
a rotational position detection unit that outputs rotational position information of the countershaft by detecting the detected portion;
a control device that receives the rotational position information output from the rotational position detection section and controls the countershaft drive motor;
an operation unit that outputs a stop command to the control device to stop driving the countershaft drive motor;
The operating range of the coupling is a rotational position of the coupling in which the bolt can be operated with respect to the coupling body from the front,
When the stop command is input from the operation unit, the control device adjusts the operation range when rotation of the counter shaft is stopped based on the rotation position information input from the rotation position detection unit. 1. A fiber bundle converging device for a spinning machine, characterized in that driving of said countershaft drive motor is controlled so that said coupling is positioned at . 2. The fiber bundle converging device for a spinning machine according to claim 1, wherein the fiber bundle converging device includes a plurality of the couplings, and the rotational positions of all the plurality of couplings are aligned. A detection shaft is connected to the countershaft located at one end of the plurality of countershafts lined up, and the detection shaft rotates as a countershaft, and the axial length of the detection shaft is equal to the length of the countershaft. 3. The fiber bundle focusing device for a spinning machine according to claim 1, wherein the detected portion is shorter than an axial length and is provided on the detection shaft. The spinning machine includes a spindle drive motor that drives a spindle to wind up the fiber bundle focused by the fiber bundle focusing device,
The control device includes:
a synchronous control unit that synchronizes and drives the countershaft drive motor and the spindle drive motor;
A rotational speed of each of the countershaft drive motor and the spindle drive motor, and a rotational speed set for each of the countershaft drive motor and the spindle drive motor, and the stop command is input from the operation unit. a detection speed setting unit that sets a detection speed that is a rotation speed lower than the rotation speed at the time when the rotation speed is detected;
a mode setting unit configured to enable execution of a first maintenance mode in which the coupling is positioned in the operation range when the spinning machine in operation is stopped and rotation of the countershaft is stopped;
When the first maintenance mode is set to be executable by the mode setting section, when the stop command is input from the operation section during operation of the spinning machine,
The synchronization control section is configured to drive each of the countershaft drive motor and the spindle drive motor to synchronously decelerate them to the detected speed, and to drive the countershaft drive motor and the spindle drive motor at the detected speed. The spinning machine according to claim 1 or 2, wherein the countershaft drive motor and the spindle drive motor are driven in synchronization, and each of the countershaft drive motor and the spindle drive motor is stopped when the rotational position detection section detects the detected section. Fiber bundle focusing device. The spinning machine includes a spindle drive motor that drives a spindle to wind up the fiber bundle focused by the fiber bundle focusing device,
The control device includes:
a synchronous control unit that synchronizes and drives the countershaft drive motor and the spindle drive motor;
A rotational speed of each of the countershaft drive motor and the spindle drive motor, and a rotational speed set for each of the countershaft drive motor and the spindle drive motor, and the stop command is input from the operation unit. a detection speed setting unit that sets a detection speed that is a rotation speed lower than the rotation speed at the time when the rotation speed is detected;
a mode setting unit configured to enable execution of a second maintenance mode in which the coupling is positioned within the operating range when the spinning machine is stopped and rotation of the counter shaft is stopped after starting the stopped spinning machine; and,
When the second maintenance mode is set to be executable by the mode setting unit, when an instruction to execute the second maintenance mode is input to the stopped spinning machine,
The synchronization control unit synchronizes and drives the countershaft drive motor and the spindle drive motor at the detected speed, and controls the countershaft drive motor and the spindle drive motor at the time when the rotational position detection unit detects the detected portion. The fiber bundle converging device for a spinning machine according to claim 1 or 2, wherein the drive of each of the spindle drive motors is stopped. 5. The spinning machine according to claim 4, wherein the mode setting unit sets a normal stop mode in which the spindle drive motor follows the countershaft drive motor to stop the spindle drive motor and the countershaft drive motor. Fiber bundle focusing device.

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