CN106494943B

CN106494943B - Yarn winding machine

Info

Publication number: CN106494943B
Application number: CN201610756008.XA
Authority: CN
Inventors: 平尾修; 竹内秀年
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2015-09-08
Filing date: 2016-08-29
Publication date: 2020-03-06
Anticipated expiration: 2036-08-29
Also published as: CN106494943A; EP3141507B1; JP2017053051A; EP3141507A1

Abstract

The present invention relates to a yarn winding machine. The spinning machine is provided with: the spinning unit, a partition duct (31), a partition blower (32), a filter member (33), a main duct (37), a main blower, and a partition blower control section (39). A partition blower control unit (39) performs deceleration control for temporarily reducing the rotational speed of the blades (32a) and continuously rotating the blades (32a) while maintaining the state in which the blades (32a) of the partition blower (32) are continuously rotating.

Description

Yarn winding machine

Technical Field

The present invention relates generally to a yarn winding machine having a structure for removing fly waste, yarn waste, and the like.

Background

Since the yarn winding machine handles the fiber bundle and/or the yarn, unnecessary fly and yarn waste (removal material) are generated during operation. If the removal material is left alone, the removal material adheres to the package or the like, and the quality of the package is degraded or the yarn winding machine itself is broken down. Therefore, conventionally, a yarn winding machine is known which can suck and remove a substance by applying a suction flow to an appropriate position. Such yarn winding machines are disclosed in japanese patent laid-open nos. s 63-50537 and 2012-132112.

Jp 63-50537 a discloses a yarn winding machine configured such that an air inlet of a blower for sucking and removing fly is disposed downward. A filter is attached to the air inlet, and flying waste and the like can be accumulated on the filter by operating the blower. In this state, the suction force is lost by stopping the operation of the blower, and the fly or the like can be dropped downward.

Jp 2012-132112 a discloses a yarn winding machine including: the main duct and the main blower collectively convey flying waste and the like collected by the partition duct. Jp 2012-132112 a describes that the rotational speeds of the blades of the respective partition blowers are different so that the force of the suction flow of the main blower does not differ depending on the distance from the main blower. Specifically, the rotation speed of the blades of the zone blower is controlled to be slower as the main blower is closer.

However, Japanese patent application laid-open No. 63-50537 does not describe a structure for collecting fly waste and the like falling downward. Jp 2012-132112 a describes that the rotational speed of the blades of each partition blower is different, but does not describe that the rotational speed of the blades of each partition blower is changed with time.

Further, japanese patent application laid-open No. 5-29699 discloses that, in a state where a shared main blower is operated, the partition blowers are sequentially stopped one by one to discharge collected fly waste to the main duct. However, Japanese patent publication No. 5-29699 does not describe that the rotational speed of the blades of the zone fan is changed with time.

Disclosure of Invention

The main object of the present invention is to provide a yarn winding machine including a partition duct, a partition blower, a main duct, and a main blower, in which a removal substance accumulated in a filter member can be easily removed by using suction flow generated by the main blower, and a load of the main blower can be reduced.

The yarn winding machine of the present invention includes a plurality of winding units, a divisional conduit, a divisional suction device, a filter member, a main conduit, a main suction device, and a control unit. The partition pipe is used for flowing the removal substance generated by at least one of the plurality of winding units. The partition suction device includes a rotating blade, and generates a suction flow for sucking the removed material from the winding unit in the partition duct. The filter member is disposed between the partitioned duct and the partitioned suction device. The main pipe is connected to a plurality of the divisional pipes and supplies the flow of the removal material from the divisional pipes. The main suction device generates a suction flow for moving the removed material from the partition line in the main line. The control unit performs deceleration control for temporarily decreasing the rotation speed of the blade while maintaining a state in which the blade is continuously rotated, when the suction flow is generated by the main suction device.

Thus, the suction force in the partition duct can be reduced by performing the deceleration control for slowing down the rotation speed of the blade of the partition suction device. During the deceleration control, the removal substance accumulated in the filter member can be easily removed by using the suction flow generated by the main suction device. In addition, since the rotation of the vane of the zone dividing suction device is not completely stopped, the load of the main suction device can be suppressed.

In the yarn winding machine, it is preferable that the yarn winding machine further includes a storage chamber that is connected to an end portion of the main pipe and stores the removal material flowing from the inside of the main pipe.

This makes it possible to perform the recovery operation of the removed material collectively at one position of the storage chamber located at the end of the machine base, for example. That is, the recovery operation does not need to be performed for each partition.

Preferably, the control unit causes the blade of the main suction device to rotate all the time during winding.

This makes it possible to reduce the size of the zone suction device.

Preferably, the main pipe and the partition pipe are connected to each other at a joint portion thereof with an opening through which the removal material can pass.

Thus, the removed material in the partitioned duct can be moved into the main duct through the opening by the suction flow in the main duct.

Preferably, the opening is provided at a downstream end of the partition duct.

This allows the removed material to smoothly move into the main pipe through the opening.

In the above-described yarn winding machine, it is preferable that the control section performs normal control for rotating the blade of the partitioning suction device in a predetermined speed range, and the deceleration control is started after the normal control.

Thus, the control unit can perform deceleration control to convey the removed material accumulated by performing normal control to the main pipe.

In the above-described yarn winding machine, it is preferable that the control unit increases the rotational speed of the blade of the zone separation suction device to the predetermined speed range in the normal control after the deceleration control.

Thus, the control unit can return the rotational speed of the blade decelerated by the deceleration control to the predetermined speed range of the normal control.

In the above-described yarn winding machine, the following configuration is preferable. That is, the zone suction device includes a zone driving unit that generates power for rotating the vane. The control unit performs the deceleration control by cutting off the power supply to the divisional driving unit.

This makes it possible to easily perform deceleration control with respect to the rotational speed of the blade of the zone vacuum apparatus.

In the above-described yarn winding machine, it is preferable that the control unit turns on the power supply of the divisional driving unit before the rotation of the blade of the divisional suction device is stopped.

This can prevent the vane of the zone vacuum apparatus from completely stopping by simple control.

In the above-described yarn winding machine, the following configuration is preferable. That is, the yarn winding machine includes a pressure detection unit that detects at least a pressure in a region on which the suction stream generated by the divisional suction device acts. The control unit starts the deceleration control when the pressure detected by the pressure detection unit deviates from a predetermined range.

Accordingly, since the amount of deposition of the removed material on the filter member has a correlation with the strength of the suction flow generated by the zone-dividing suction device, the deceleration control can be started at an appropriate timing.

In the yarn winding machine, it is preferable that the pressure detection unit is disposed between the filter member and the partition suction device.

If the removed substance is excessively accumulated in the filter member, the suction flow of the partition suction device is less likely to act. Therefore, the pressure between the filter member and the partitioned suction device rises. Therefore, by detecting the pressure in this region, the deceleration control can be started in accordance with the deposition amount of the removed substance on the filter member.

In the yarn winding machine, it is preferable that the pressure detection unit is disposed at least at any one of the winding unit, the partition duct, and a space between the winding unit and the partition duct.

If the removed substance is excessively accumulated in the filter member, the suction flow of the partition suction device is less likely to act. Therefore, by detecting the pressure in at least one of the regions, the deceleration control can be started in accordance with the deposition amount of the removal material on the filter member.

In the yarn winding machine, it is preferable that the control unit starts the deceleration control at a predetermined timing.

This enables the deceleration control to be started by simple control.

In the above-described yarn winding machine, it is preferable that the control unit starts the deceleration control at one of the plurality of the divisional suction devices when all of the plurality of the divisional suction devices do not perform the deceleration control.

Thus, since the load of the main suction device is increased by performing the deceleration control for one of the zone suction devices, the load of the main suction device can be reduced by shifting the start timing of the deceleration control for each of the zone suction devices.

In the above-described yarn winding machine, it is preferable that the winding unit wind the yarn at least while the deceleration control is performed on the divisional suction devices provided for the winding unit.

Accordingly, the yarn can be wound even while the deceleration control is performed, and therefore the yarn winding machine can be efficiently operated.

The yarn winding machine further includes a discharge duct provided for each of the plurality of partition ducts, and having a discharge port through which the suction flow having passed through the filter member is discharged to the outside. The filter member is provided at a connection portion between the partition duct and the discharge duct. The partition suction device is provided between the filter member and the discharge port in the discharge duct.

This enables the suction flow generated by the partition suction device to act more efficiently on the partition duct.

Drawings

Fig. 1 is a front view of a spinning machine according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of the spinning frame.

Fig. 3 is a front sectional view showing the structure of the fly ash removing section.

Fig. 4 is a graph showing a process of controlling the rotational speed of the blades of the zone division blower according to the pressure.

Fig. 5 is an enlarged cross-sectional view showing a state where the fly ash is accumulated in the filter member.

Fig. 6 is an enlarged cross-sectional view showing a state where the fly ash accumulated in the filter member is removed.

Fig. 7 is a flowchart for explaining the process of deceleration control.

Fig. 8 is an enlarged cross-sectional view showing the position of the pressure detection sensor of the fly waste removal portion according to the first modification.

Fig. 9 is a table showing a schedule for determining the start time of deceleration control in the second modification.

Detailed Description

Next, a spinning machine (yarn winding machine) according to an embodiment of the present invention will be described with reference to the drawings. A spinning machine 1 as a yarn winding machine shown in fig. 1 includes: a plurality of spinning units (winding units) 2 arranged in parallel, a yarn joining carriage 3, a blower case 4, and a prime mover case 5.

As shown in fig. 1 and 2, each spinning unit 2 includes a draft device 7, a spinning device 9, a fly removal unit 30, a yarn accumulating device 12, and a winding device 13, which are arranged in this order from upstream to downstream. In the description of fig. 1 and 2, "upstream" and "downstream" refer to upstream and downstream in the moving (conveying) direction of the sliver 15, the fiber bundle 8, and the spun yarn 10 during spinning.

The draft device 7 is provided near the upper end of the frame 6 provided in the spinning machine 1. The draft device 7 includes four roller pairs, i.e., a rear roller pair 16, a third roller pair 17, a middle roller pair 19, and a front roller pair 20, in this order from the upstream side. In the intermediate roller pair 19, a tangential belt 18 is provided for each roller. The draft device 7 drafts the sliver 15 supplied from the sliver box, not shown, to a predetermined thickness. The fiber bundle 8 drafted by the draft device 7 is supplied to the spinning device 9.

The spinning device 9 includes a swirling flow generating chamber (not shown) through which the fiber bundle 8 can be inserted. The spinning device 9 generates a whirling airflow in the whirling flow generation chamber by ejecting compressed air from nozzles not shown into the whirling flow generation chamber. The spinning device 9 applies a twist to the fiber bundle 8 by means of a rotating air flow to produce a spun yarn 10.

In the spinning device 9, fibers (fly) that are not twisted into the spun yarn 10 are generated during spinning. The fly waste is sent to a storage chamber (dust collection box) not shown via the suction pipe 91, the partition pipe 31, and the main pipe 37 provided in the fly waste removing unit 30. The accumulation chamber is connected to an end of the main pipe 37. The flying flowers flowing into the main pipe 37 are accumulated in the accumulation chamber. Therefore, the fly ash does not stay in the swirling flow generating chamber, and therefore the generation of the swirling flow is not hindered. The detailed structure of the fly waste removing unit 30 will be described later.

Downstream of the spinning device 9, a yarn accumulating device 12 is provided. As shown in fig. 2, the yarn accumulating device 12 includes a yarn accumulating roller 21 and a motor 25 for rotationally driving the yarn accumulating roller 21.

The yarn accumulating roller 21 temporarily accumulates the spun yarn 10 wound around its outer peripheral surface by a predetermined amount. The yarn accumulating roller 21 is rotated at a predetermined rotational speed in a state where the spun yarn 10 is wound around the outer peripheral surface, and thereby the spun yarn 10 is pulled out from the spinning device 9 at a predetermined speed and is conveyed to the downstream side. The yarn accumulating device 12 can temporarily accumulate the spun yarn 10 on the outer peripheral surface of the yarn accumulating roller 21, and thus functions as a buffer. This makes it possible to eliminate a defect (for example, loosening of the spun yarn 10) in which the spinning speed and the winding speed of the spinning device 9 (the speed of the spun yarn 10 wound into the package 45) are not uniform for any reason.

The upstream guide 23 is disposed slightly upstream of the yarn accumulating roller 21. The upstream guide 23 guides the spun yarn 10 to the outer peripheral surface of the yarn accumulating roller 21.

A clearer 52 is provided between the spinning device 9 and the yarn accumulating device 12. The spun yarn 10 produced by the spinning device 9 passes through the clearer 52 before being wound around the yarn accumulating device 12. The clearer 52 monitors the thickness of the moving textile yarn 10. When detecting a yarn defect in the spun yarn 10, the clearer 52 transmits a yarn defect detection signal to a unit controller, not shown.

Upon receiving the yarn defect detection signal from the clearer 52, the unit controller stops the driving of the spinning device 9 to cut the spun yarn 10, and stops the winding or the like by the winding device 13. The unit controller sends a control signal to the yarn joining carriage 3 to move the yarn joining carriage 3 to the spinning unit 2. After that, the unit controller drives the textile device 9 again after the end of the yarn joining by the yarn joining carriage 3, and starts the winding by the winding device 13 again.

As shown in fig. 1 and 2, the yarn joining cart 3 includes a yarn joining device 43, a suction pipe 44, and a suction nozzle 46. When the yarn breakage or yarn cutting occurs in the weaving unit 2, the yarn joining cart 3 moves on the guide rail 41 and stops at the working position with respect to the weaving unit 2. The suction pipe 44 rotates upward about the axis, catches the spun yarn 10 fed from the spinning device 9, and rotates downward about the axis to guide the spun yarn 10 to the yarn joining device 43. The suction nozzle 46 rotates downward about the axis to catch the spun yarn 10 from the package 45, and rotates upward about the axis to guide the spun yarn 10 to the yarn joining device 43. The yarn joining device 43 joins the guided textile yarns 10 to each other.

The winding device 13 includes a cradle arm 71, a winding drum 72, and a traverse device 75. The swing arm 71 is supported swingably about the support shaft 70, and rotatably supports the spool 48 for winding the spun yarn 10. The winding drum 72 rotates while being in contact with the outer peripheral surface of the spool 48 or the package 45. The traverse device 75 includes a traverse guide 76 capable of guiding the spun yarn 10. The winding device 13 reciprocates the traverse guide 76 by an unillustrated driving mechanism and drives the winding drum 72 by an unillustrated electric motor. Thereby, the spun yarn 10 is wound into the package 45 while the spun yarn 10 is traversed.

Next, the structure of the fly ash removal unit 30 will be described with reference to fig. 3. In the description of the flying waste removing unit 30, "upstream" and "downstream" refer to upstream and downstream in the direction of conveyance of the removed material (i.e., the direction in which the suction flow flows).

As shown in fig. 3, the flying waste removing unit 30 includes a partition duct 31, a partition blower (partition suction device) 32, a filter member 33, a pressure detecting unit 35, a main duct 37, and a main blower (main suction device) 38 (fig. 1). The partition blower 32 and the main blower 38 may be suction devices other than blowers.

In the spinning machine 1 of the present embodiment, the suction tube 91 shown in fig. 2 is disposed for each spinning unit 2. The suction pipe 91 is disposed between the spinning unit 2 and the partition duct 31. In the present embodiment, the upstream end of the suction tube 91 is connected to the spinning device 9 formed in the spinning unit 2 (more specifically, an exhaust chamber (not shown) formed on the downstream side of the swirling flow generating chamber). As shown in fig. 3, a suction tube 91 of a predetermined amount (20 tubes in the present embodiment) of the spinning unit 2 is connected to one partition duct 31. In the present embodiment, since one suction tube 91 is disposed in one spinning unit 2, twenty suction tubes 91 are connected to one partition duct 31. The partition duct 31 is provided for every predetermined amount of the weaving units 2 (hereinafter, a set of the predetermined amount of the weaving units 2 is referred to as a partition). The number of the weaving units 2 in each section may be the same or different. Therefore, the number of suction tubes 91 connected to the partition ducts 31 and the number of the textile units 2 may be the same for all the partition ducts 31 or may be different for each partition duct 31. The partition pipe 31 is connected at its downstream side to the main pipe 37 and the discharge pipe 34. Therefore, the suction flow generated by the main blower 38 also acts on the partition duct 31.

The partition blower 32 is disposed inside the discharge duct 34 and in the vicinity of the filter member 33. The partition fan 32 includes a blade 32a that generates suction flow by rotating, and a partition fan driving unit (partition driving unit) 32b that drives the blade 32 a. The partition blower driving unit 32b is an electric motor and is controlled by a partition blower control unit (control unit) 39. The zone blower control unit 39 may be provided in a control device that performs overall control of the spinning machine 1, or may be provided in each zone.

As shown in fig. 3, a filter member 33 is provided at a connection portion of the partition pipe 31 and the discharge pipe 34. The filter member 33 is formed in a mesh shape, and the mesh is configured to prevent the passage of the removal substance 81 and to allow the passage of air (suction flow 82 described later).

The pressure detector 35 is disposed in the discharge duct 34 in a region between the filter member 33 and the partition blower 32. The pressure detecting unit 35 detects the pressure in this area. At least the suction flow 82 generated by the zone separation blower 32 is applied to this region. The pressure detection unit 35 outputs a pressure detection signal to the partition blower control unit 39.

The partition blower 32 sucks the air on the partition duct 31 side through the filter member 33, and can generate the suction flow 82 in the partition duct 31, the suction pipe 91, and the like. The suction flow 82 is mainly used to move the removed matter 81 generated by the spinning device 9 to the vicinity of the downstream end of the partition duct 31 through the suction pipe 91.

The suction flow 82 having passed through the filter member 33 is discharged to the outside through the discharge port 34a of the discharge duct 34. The remaining suction flow 82 passes through the opening 36 formed between the partition pipe 31 and the main pipe 37, and flows together with the removed matter 81 toward the main pipe 37. That is, in a state where the main blower 38 and the partition blower 32 are driven together, a part of the suction flow in the partition duct 31 flows to the partition blower 32, and the remaining part of the suction flow in the partition duct 31 flows to the main duct 37. In the present embodiment, the partition pipe 31 is directly connected to the main pipe 37. The opening 36 is provided at a connection portion between the partition pipe 31 and the main pipe 37. The opening 36 is provided at the downstream end of the partition duct 31. The filter member 33 is also provided at the downstream end of the partition duct 31. In the present embodiment, a member (shutter or the like) for opening and closing the opening 36 is not provided. Therefore, the flying waste can move from the partition duct 31 to the main duct 37 through the opening 36 by the suction flow in the main duct 37.

A main blower 38 (fig. 1) is disposed in the blower case 4 near one end of the main duct 37. The main blower 38 generates a suction flow 83 in the main pipe 37 by making the downstream side of the main pipe 37 negative pressure. The main blower 38 is always running. That is, the blades of the main blower 38 are rotated all the time during winding. The rotation of the main blower 38 is controlled by a partition blower control unit (control unit) 39. As a modification, a main blower control unit may be provided separately and independently from the partition blower control unit 39, and the rotation of the main blower may be controlled by the main blower control unit. The removed matter 81 flows through the suction flow 83 to an unillustrated storage chamber (a header tank) disposed at one end of the main pipe 37.

In the present embodiment, the fly ash removal unit 30 is configured such that the flow rate of the suction flow 82 discharged through the discharge duct 34 is greater than the flow rate of the suction flow 82 introduced into the main duct 37. This reduces the flow rate of the suction flow 83 sucked by the main blower 38, and reduces the power consumption of the main blower 38. However, the flow rate of the suction flow 82 discharged through the discharge duct 34 may be smaller than the flow rate of the suction flow 82 introduced into the main duct 37.

Hereinafter, a method of removing the removing substance 81 deposited on the filter member 33 will be described with reference to fig. 4 to 7.

The graph shown as "rotation speed" in fig. 4 shows an example of temporal change in the rotation speed of the blades 32a of the zone division blower 32. As shown in fig. 4, the zone blower control section 39 performs normal control and deceleration control.

The normal control is mainly control for rotating the blades 32a at a substantially constant (predetermined speed range) rotation speed. The partition blower control section 39 performs normal control not only during the winding of the spun yarn 10 but also during the interruption of the winding of the spun yarn 10 due to yarn splicing or the like. In the present embodiment, the "predetermined speed range" is a speed range of the rotation speed after the rotation speed is increased from the rotation speed at the end of the deceleration control in the normal control. In the example shown in fig. 4, the "predetermined speed range" is a speed indicated by a horizontal line that is higher than the speed during deceleration control. As shown in fig. 4, the "predetermined speed range" may be constant, or may be increased or decreased within a predetermined range so that the average value becomes the speed as shown in fig. 4.

The deceleration control is control for maintaining the rotation of the blade 32a while temporarily decreasing the rotation speed. The control of completely stopping the vane 32a does not belong to the deceleration control. Further, in order to return to the normal control after the deceleration control, it is necessary to accelerate the blade 32 a. In the present embodiment, the acceleration is performed in the normal control. In the present embodiment, only the regular control and the deceleration control are performed in the winding of the spun yarn 10, and therefore the regular control and the deceleration control are alternately performed (in other words, the deceleration control is performed after the regular control, and the regular control is performed again after the deceleration control). Since the main blower 38 is always operated as described above, the main blower 38 is continuously operated during any one of the deceleration control and the normal control.

The partition blower control unit 39 switches between the normal control and the deceleration control in accordance with the deposition amount of the removal substance 81 on the filter member 33, and removes the deposited removal substance 81. The following description will be specifically made.

As shown in fig. 5, when the removal substance 81 is deposited on the filter member 33, the mesh of the filter member 33 is blocked. Therefore, the suction flow 82 generated by the partition blower 32 hardly acts on the partition duct 31. Instead, the suction flow 82 easily acts inside the discharge duct 34, and thus the pressure inside the discharge duct 34 increases. Therefore, the pressure detected by the pressure detection unit 35 increases as the deposition amount of the removal substance 81 increases. The graph showing "pressure" in fig. 4 shows a case where the pressure detected by the pressure detecting unit 35 increases with the elapse of time.

The partition blower control unit 39 determines the deposition amount of the removal substance 81 on the filter member 33 based on the detection value of the pressure detection unit 35. Specifically, the zone blower control unit 39 determines whether or not the value detected by the pressure detection unit 35 is greater than a predetermined threshold value (S101 in fig. 7).

When the value detected by the pressure detector 35 is greater than the predetermined threshold value, the zone blower controller 39 determines whether or not the other zone blowers 32 are in the deceleration control (S102). When all the other zone blowers do not perform the deceleration control, the zone blower control unit 39 turns off the power supply to the zone blower driving unit 32b (interrupts the power supply to the zone blower driving unit 32 b) (S103, starts the deceleration control).

By turning off the power supply to the partition blower driving part 32b, the rotation speed of the blades 32a is reduced as shown in fig. 4. Therefore, the suction flow 82 of the removal substance 81 acting on the filter member 33 becomes weak. Accordingly, as shown in fig. 5, the removed matter 81 is moved toward the main pipe 37 by the suction flow 83 generated by the main blower 38. By performing the deceleration control in this way, the removal substance 81 deposited on the filter member 33 can be removed.

In the deceleration control of a certain zone blower 32, the load of the main blower 38 becomes large. If the deceleration control is performed simultaneously by the plurality of zone blowers 32, the removal substance 81 may not be removed from the filter member 33. Therefore, when the other zone blowers 32 are in the deceleration control, the zone blower control unit 39 starts the next deceleration control of the zone blowers 32 at the time point when the deceleration control of all of the other zone blowers 32 is finished (in other words, at the time point when all of the plurality of zone blowers 32 are not performing the deceleration control) (the process of S102 described above).

The partition blower control unit 39 calculates the elapsed time after the start of the deceleration control, and determines whether or not the elapsed time exceeds a predetermined time (S104). When determining that the elapsed time exceeds the predetermined time, the zone blower control unit 39 turns on the power supply of the zone blower driving unit 32b (resumes the supply of electric power to the zone blower driving unit 32 b) (S105, ends the deceleration control). As a result, as shown in fig. 4, the rotation speed of the blades 32a of the partition blower 32 increases and reaches the rotation speed during the normal control.

The predetermined time is set to be shorter than the time until the rotation of the blades 32a of the partition blower 32 is stopped. Therefore, the blade 32a can be prevented from completely stopping. This prevents the suction force of the partition fan 32 from becoming zero, and thus the load on the main fan 38 can be suppressed.

Next, a first modification of the above embodiment will be described with reference to fig. 8. In the first modification, the pressure detection unit 35 is disposed in an area inside the suction tube 91. At least the suction flow 82 of the zone fan 32 is active in this region. When the removed substance 81 is deposited on the filter member 33 as shown in fig. 5, the filter member 33 is clogged with the mesh. Therefore, the suction flow 82 generated by the partition blower 32 hardly acts on the partition duct 31. Therefore, the pressure inside the partition blower 32 and the suction pipe 91 is reduced.

The partition blower control unit 39 of the present modification determines whether or not the pressure detected by the pressure detection unit 35 is less than a predetermined threshold value. The zone blower control unit 39 performs deceleration control when the pressure detected by the pressure detection unit 35 is less than a predetermined threshold value.

In the area closer to the spinning unit 2 than the filter member 33 in the fly removal section 30, the pressure decreases with the accumulation of the removal substance 81. Therefore, the pressure detecting unit 35 may be disposed at a position in the textile unit 2 where the suction and drainage function is exerted. In the present embodiment, the pressure detection unit 35 is disposed in one of the plurality of suction tubes 91, but the pressure detection unit 35 may be disposed in each of the plurality of suction tubes 91.

The pressure detection unit 35 may be disposed between the filter member 33 and the partition blower 32, and the pressure detection unit 35 may be disposed in the partition blower 32, the suction tube 91, or the like. The mounting position and the number of the mount portions may be different for each of the divisional pressure detection sections 35. In this case, there may be a partition where the pressure detection unit 35 is not disposed.

The pressure detecting section 35 may be provided in the spinning unit 2. Specifically, the pressure detecting unit 35 may be provided in the exhaust path provided downstream of the swirling flow generating chamber of the spinning device 9. That is, the pressure detection unit 35 may be provided upstream of the suction tube 91.

Next, a second modification of the above embodiment will be described with reference to fig. 9. In the above-described embodiment and the first modification, the start timing of the deceleration control is determined based on the detection result of the pressure detecting unit 35. In contrast, in the second modification, deceleration control is performed using a predetermined schedule.

Fig. 9 shows an example of this schedule. According to the schedule of fig. 9, ten divisions are provided in the spinning machine 1, and the single deceleration control is performed for 5 seconds in each division at a frequency (pace) of once per hour. The schedule is set so that the time at which the deceleration control is performed differs for each zone. By determining the start timing of the deceleration control by the method of the second modification, the control performed by the partition blower control unit 39 can be simplified.

The schedule of the deceleration control may be set based on an arbitrary value input by the operator from a setting unit or the like not shown in the drawings, or may be set as an initial value of the spinning machine 1. In the schedule of the deceleration control, the number and/or period other than the above-described number and period may be set.

As described above, the spinning machine 1 includes the spinning unit 2, the partition duct 31, the partition blower 32, the filter member 33, the main duct 37, the main blower 38, and the partition blower control unit 39. A plurality of partition ducts 31 are respectively provided at least in each of the weaving units 2, and the removal substance 81 produced by the weaving unit 2 flows in the partition ducts 31. Zoned blower 32 generates suction flow 82 for suctioning and removing substance 81 within zoned pipe 31. The filter member 33 is disposed between the partition duct 31 and the partition blower 32. The main pipe 37 is connected to the plurality of partitioned pipes 31. Removed material 81 from zoned line 31 flows within main line 37. The main blower 38 generates a suction flow 83 for moving the removed matter 81 in the main pipe 37. When the main blower 38 generates the suction flow 83, the zone-dividing blower control unit 39 performs deceleration control for temporarily decreasing the rotation speed of the blade 32a while maintaining the state in which the blade 32a continues to rotate.

Thus, the suction force in the partition duct 31 can be reduced by performing the deceleration control for slowing down the rotation speed of the blades 32a of the partition blower 32. During this deceleration control, the removal substance 81 deposited on the filter member 33 can be easily removed by the suction flow 83 generated by the main blower 38. In addition, since the rotation of the blades 32a of the partition blower 32 is not completely stopped, the load of the main blower 38 can be suppressed.

The zone blower control unit 39 of the spinning machine 1 can perform normal control for rotating the blades 32a of the zone blower 32 in a predetermined speed range, and after the normal control, deceleration control is started.

Thus, the partition blower control unit 39 can perform deceleration control to convey the accumulated removal material 81 to the main pipe 37 by performing normal control.

After the deceleration control, the zone-dividing blower control unit 39 of the spinning machine 1 increases the rotation speed of the blades 32a of the zone-dividing blower 32 until the rotation speed reaches a predetermined speed range in the normal control.

Thus, the zone blower control unit 39 can return the rotation speed of the blade 32a decelerated by the deceleration control to a predetermined speed range in the normal control.

The zone blower 32 of the spinning machine 1 includes a zone blower driving unit 32b that generates power for rotating the blades 32 a. The partition blower control unit 39 performs deceleration control by cutting off the power supply to the partition blower driving unit 32 b.

This makes it possible to easily perform the deceleration control of the rotation speed of the blades 32a of the zone division blower 32.

The zone-blower control unit 39 of the spinning machine 1 turns on the power supply of the zone-blower driving unit 32b (restarts the supply of electric power to the zone-blower driving unit 32 b) before the rotation of the blades 32a of the zone blower 32 is stopped.

This can prevent the blades 32a of the partition blower 32 from completely stopping with simple control.

While the zone blower control unit 39 of the spinning machine 1 performs the deceleration control, the operation of the main blower 38 is continued.

Thus, the removal substance 81 deposited on the filter member 33 can be reliably removed by the suction flow 83 of the main blower 38.

The spinning machine 1 includes a pressure detection unit 35 that detects a pressure in a region on which the suction flow 82 generated by the zone-dividing blower 32 acts (specifically, a region between the filter member 33 and the zone-dividing blower 32 in the discharge duct 34). When the pressure detected by the pressure detection unit 35 deviates from the predetermined range (is greater than the predetermined threshold), the zone blower control unit 39 starts the deceleration control.

Accordingly, since the amount of deposition of the removed matter 81 on the filter member 33 has a correlation with the strength of the suction flow 82 generated by the partition blower 32, the deceleration control can be started at an appropriate timing.

The spinning unit 2 of the spinning machine 1 winds the spun yarn 10 at least while the corresponding zone blower 32 performs deceleration control.

Accordingly, the spun yarn 10 can be wound even while the deceleration control is performed, and therefore the spinning machine 1 can be efficiently operated.

The preferred embodiment and the modified examples of the present invention have been described above, but the above-described configuration can be modified as follows, for example.

In the above embodiment, the zone blower control unit 39 controls the power supply of the zone blower driving unit 32b to be turned off for a predetermined time, performs the deceleration control, and then turns the power supply on to return to the normal control. The deceleration control may be performed by reducing the rotation speed of the zone blower driving unit 32b to a set value (target value). In the above embodiment, the rotation speed of the blades 32a of the zone dividing blower 32 is continuously reduced, but the rotation speed may be continuously reduced once and may be substantially constant (slower than the rotation speed in the normal control). The rotation speed of the blades 32a may be decreased in a stepwise or curved manner, instead of being linearly decreased as shown in fig. 4. The rotation speed of the blade 32a during deceleration control may be any speed other than the zero speed, provided that it is lower than the rotation speed during normal control.

In the above embodiment, the deceleration control may not be performed by the plurality of zone blowers 32 at the same time. That is, from the state where the normal control is performed by all the zone blowers 32, the deceleration control of one zone blower 32 is started. However, the deceleration control may be performed simultaneously for a plurality of zone blowers 32, as in the case where it is determined whether or not the deceleration control is started for each zone.

In the above embodiment, the timing of ending the deceleration control (the timing of turning on the power of the zone blower driving unit 32 b) is determined based on the elapsed time. Instead, the timing of ending the deceleration control may be determined based on the pressure detected by the pressure detection unit 35 (that is, based on the amount of deposition of the removal substance 81 on the filter member 33).

Instead of setting the number of the spinning units 2 connected to one partition duct 31 to 20, the number may be 1 to 19 or 21 or more.

The position and angle at which the filter member 33 is disposed are not particularly limited. For example, as disclosed in japanese patent application laid-open No. 2012 and 132112, the filter member 33 may be disposed to be inclined so as to approach the opening 36 toward the downstream.

In addition to the suction pipe 91, a suction pipe that sucks and conveys the fly waste or the like adhering to the draft rollers of the draft device 7 may be connected to the partition duct 31. In the spinning unit 2, a suction port for sucking yarn waste or the like may be provided downstream of the spinning device 9, and a suction tube having the suction port may be connected to the partition duct 31. In a spinning machine including a yarn joining device for each spinning unit 2, a tube for sucking and conveying yarn waste and the like generated during yarn joining may be connected to the partition duct 31.

The spinning unit 2 pulls out the spun yarn 10 from the spinning device 9 through the yarn accumulating device 12, but is not limited to this structure. For example, the spinning unit may be configured to pull out the spun yarn 10 from the spinning device 9 by the feed roller and the nip roller, and thereafter to accumulate the spun yarn 10 by the yarn accumulating device 12 or the loose tube provided on the downstream side. In the case of a configuration in which the spun yarn 10 is drawn out from the spinning device 9 by the feed roller and the nip roller, the yarn accumulating device 12 can be omitted.

The structure of the present invention is not limited to the above-described spinning machine, and can be applied to, for example, a free end spinning machine, an automatic winder, a twister, a doubling machine, and the like. When the structure of the present invention is used in, for example, an automatic winder, the present invention can be applied to removal of yarn waste generated at the time of yarn splicing.

Claims

1. A yarn winding machine is characterized by comprising:

a plurality of winding units;

a zoned conduit for flow of removal material produced by at least one of the plurality of winder units;

a partitioned suction device having a rotating blade and generating a suction flow for sucking the removed material from the winding unit in the partitioned duct;

a filter member disposed between the partitioned duct and the partitioned suction device;

a main conduit connected to a plurality of the zoned conduits and through which the removal material flows from the zoned conduits;

a main suction device that generates a suction flow for moving the removed material from the partition line within the main pipe; and

a control unit that performs deceleration control for temporarily decreasing the rotational speed of the blade while maintaining a state in which the blade is continuously rotated when the suction flow is generated by the main suction device,

the partition suction device is provided with a partition driving part for generating power for rotating the blades,

the control unit performs the deceleration control by cutting off the power supply to the divisional driving unit,

the control unit turns on the power supply of the partition driving unit before the rotation of the blade of the partition suction device is stopped.

2. The yarn winding machine of claim 1,

the apparatus further includes a storage chamber connected to an end of the main pipe and storing the removed material flowing from the main pipe.

3. The yarn winding machine according to claim 1 or 2,

the control unit rotates the blades of the main suction device all the time during the winding process.

4. The yarn winding machine of claim 3,

the main pipe and the partition pipe are connected to each other at a joint portion thereof with an opening through which the removal material can pass.

5. The yarn winding machine of claim 4,

the opening is provided at a downstream end of the partition duct.

6. The yarn winding machine according to claim 1 or 2,

the control unit may perform normal control for rotating the blades of the zone separation suction device in a predetermined speed range, and may start the deceleration control after the normal control.

7. The yarn winding machine of claim 6,

the control unit increases the rotational speed of the blade of the zone separation suction device to the predetermined speed range in the normal control after the deceleration control.

8. The yarn winding machine according to claim 1 or 2,

a pressure detecting unit for detecting at least a pressure in a region on which the suction flow generated by the partitioned suction device acts,

the control unit starts the deceleration control when the pressure detected by the pressure detection unit deviates from a predetermined range.

9. The yarn winding machine of claim 8,

the pressure detecting unit is disposed between the filter member and the partitioned suction device.

10. The yarn winding machine of claim 8,

the pressure detection unit is disposed at least one of the winding unit, the partitioned duct, and a space between the winding unit and the partitioned duct.

11. The yarn winding machine according to claim 1 or 2, wherein the control section starts the deceleration control at a predetermined timing.

12. The yarn winding machine according to claim 1 or 2,

the control unit starts the deceleration control at one of the plurality of the zone suction devices when all of the plurality of the zone suction devices do not perform the deceleration control.

13. The yarn winding machine according to claim 1 or 2,

the winding unit winds the yarn at least while the deceleration control is performed on the divisional suction devices provided to the winding unit.

14. The yarn winding machine according to claim 1 or 2,

a discharge duct provided for each of the plurality of partition ducts and having a discharge port through which the suction flow having passed through the filter member is discharged to the outside,

the filter member is provided at a connection portion of the partition duct and the discharge duct,

the partition suction device is provided between the filter member and the discharge port in the discharge duct.

15. A suction control method in a yarn winding machine, wherein the yarn winding machine includes:

a plurality of winding units;

a partitioned suction device having a rotating blade and generating a suction flow for sucking the removed material from the winding unit in the partitioned duct, the partitioned suction device including a partitioned drive unit that generates power for rotating the blade;

a main conduit connected to a plurality of the zoned conduits and through which the removal material flows from the zoned conduits; and

a main suction device that generates a suction flow for moving the removed material from the partition line within the main pipe,

the attraction control method is characterized in that,

performing deceleration control for temporarily decreasing the rotational speed of the blade while maintaining a state in which the blade is continuously rotated when the suction flow is generated by the main suction device,

16. The attraction control method according to claim 15,

when the main suction device is generating the suction flow, a part of the suction flow in the partition pipe is made to flow toward the partition suction device, and the remaining suction flow in the partition pipe is made to flow toward the main pipe.

17. The attraction control method according to claim 16,

the main suction device generates the suction flow all the time in the winding process.