JP2000034629A - Cotton-gathering controller of centralized cotton- gathering apparatus in spinning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a fleece in a yarn-broken spindle from entangling with a spun yarn or from causing yarn breakage when carrying out the operation of cotton-gathering by a centralized cotton-gathering apparatus. SOLUTION: Fly waste to be accumulated on a spinning machine frame 1 is cleaned by a traveling cleaning device 16 traveling along the spinning machine frame 1. A fleece or the like supplied from a roller part at the time of yarn breakage is sucked by a pneumatic device 3, and temporarily stored in a cottongathering room 7. The fleece or the like stored in each of the cotton- gathering room 7 is gathered in a centralized cotton-gathering apparatus through a main duct 10 when a valve 13 of a branched duct 12 connected to each of the cotton-gathering room 7 is opened in a stopped state of a motor 8 for the pneumatic device 3. When carrying out the gathering operation of the fleece or the like from the cotton-gathering room 7, the operation of the traveling cleaning device 16 is stopped, and the blowout air current of the traveling cleaning device 16 does not act in a reduced state of the negative pressure of the pneumatic device 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centralized cotton gathering control device for a spinning machine such as a ring spinning machine or a ring twisting machine, and more particularly to a moving cleaning device which moves along a spinning machine stand and a roller part when yarn breaks. A pneumatic device for sucking the supplied fleece or the like is provided, and the cotton collecting chamber is connected to a main duct connected to a centralized cotton collecting device common to a plurality of spinning machines via a branch duct provided with opening / closing means. The present invention relates to a cotton collecting control device of a centralized cotton collecting device in a spinning machine connected by means of a spinning machine.

[0002]

2. Description of the Related Art Generally, in the case of a ring spinning machine, when a yarn breakage occurs, the fleece sent out from the drafting device is prevented from winding around a draft roller or adversely affecting a weight other than the yarn breakage weight. A pneumatic device for sucking the fleece supplied from the draft device before the splicing is performed is installed. The pneumatic device includes a suction duct extending along the spinning frame, and a cotton collection box connected to an end of the suction duct. The cotton collection box includes a cotton collection chamber and a blower disposed at a position corresponding to the cotton collection chamber with a filter interposed therebetween.Fleeces and the like sucked by the pneumatic device are collected in the cotton collection chamber for each spinning machine unit. Can be Workers regularly collect the fleece collected in the cotton collection room, and a valve is provided in the cotton collection duct (main duct) of the centralized cotton collection device common to multiple machines. In some cases, the fleece or the like accumulated in the cotton collection chamber is automatically collected by a centralized cotton collection device by connecting the valve via a closed duct and opening the valve periodically. When the fleece or the like stored in the cotton collecting chamber of the pneumatic device is collected by the centralized cotton collecting apparatus, the blower of the cotton collecting chamber is stopped and the valve is opened during operation of the spinning machine stand.

[0003] In general, in spinning machines such as a ring spinning machine and a ring twisting machine, traveling along the spinning machine stand is carried out in order to prevent fly waste generated by the spinning machine from accumulating on the frame and each part of the machine stand. Each machine is equipped with a moving cleaning device that blows out an air flow toward the machine while sucking and removing fly dust and the like that has fallen to the floor. The mobile cleaning device is generally called a traveling cleaner or a blow cleaner. During the operation of the spinning machine, the moving cleaning device repeats a reciprocating movement along the spinning machine stand to automatically perform a cleaning operation.

[0004]

In the conventional apparatus, when the fleece or the like accumulated in the cotton collecting chamber of the pneumatic apparatus provided for each spinning machine stand is suctioned and removed by the centralized cotton collecting apparatus, the concentrated cotton collecting operation is performed. The valve is opened with the blower of the pneumatic device in the receiving cotton collecting room stopped, and the fleece and the like in the cotton collecting room are conveyed to the centralized cotton collecting device via the cotton collecting duct. Therefore, in the state where the centralized cotton collecting operation is being performed, the negative pressure acting on the suction duct of the pneumatic device is due to the negative pressure from the cotton collecting duct of the centralized cotton collecting device, and the negative pressure due to the operation of the blower of the pneumatic device. Weaker than. Even in this state, the fleece supplied from the drafting device can be sucked by the thread breaking weight, but if the blowing airflow of the moving cleaning device is directly blown onto the fleece, the fleece flows sideways to spin the adjacent weight. Entanglement the yarn and induce yarn breakage. Therefore, in the conventional apparatus, thread breakage occurs during the concentrated cotton collecting operation, and when the moving cleaning device passes through a position corresponding to the thread breakage weight, inconveniences such as inducing thread breakage of the adjacent weight occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object the fleece of a thread break weight being entangled with a spun yarn of an adjacent weight during a cotton collecting operation by a centralized cotton collecting apparatus. It is an object of the present invention to provide a cotton collecting control device of a centralized cotton collecting device in a spinning machine, which can prevent the occurrence of wrinkles.

[0006]

According to the first aspect of the present invention, there is provided a moving cleaning device which moves along a spinning machine stand, a fleece supplied from a roller part when a yarn breaks, and the like. And a pneumatic device for sucking air, wherein the cotton collecting chamber of the pneumatic device is connected to a main duct connected to a centralized cotton collecting device common to a plurality of spinning machines via a branch duct having opening / closing means. Control means for stopping the operation of a movable cleaning device for cleaning a spinning machine stand provided with the cotton collection chamber during the cotton collection work in the cotton collection chamber. Provided.

According to a second aspect of the present invention, in the first aspect of the invention, after the control means stops the operation of the moving cleaning device, the control means issues a command to stop the operation of the pneumatic device with a predetermined delay time. Output.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the control means is arranged to close the opening / closing means for terminating the cotton collecting operation in the cotton collecting chamber. The pneumatic device is restarted.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the control means is configured to control the movement of the moving cleaning device upon completion of a cotton collecting operation in the cotton collecting chamber. The pneumatic device is restarted before restarting.

According to a fifth aspect of the present invention, in the invention of any one of the second to fourth aspects, the control means includes one control means for operating the pneumatic device and the movable cleaning device. Perform stop control.

Therefore, according to the first aspect of the present invention, fly waste which is to be deposited on the spinning machine stand is cleaned by the movable cleaning device which moves along the spinning machine stand. Further, fleece or the like supplied from the roller part at the time of yarn breakage is sucked by the pneumatic device and temporarily stored in the cotton collecting chamber. The fleece and the like stored in each cotton collection chamber are collected through the main duct in a state where the opening / closing means of the branch duct to which the cotton collection chamber is connected is opened and the negative pressure of the pneumatic device is reduced. Collected in the device. During the operation of collecting fleece from the cotton collection chamber (cotton collection operation), the operation of the moving cleaning device is stopped, and when the negative pressure of the pneumatic device is reduced, the airflow blown out of the moving cleaning device causes the roller part of the spinning machine stand. Does not act on

According to a second aspect of the present invention, in the first aspect of the invention, during the operation of collecting cotton such as fleece from the cotton collection chamber, the operation of the movable cleaning device is stopped, and after a predetermined time delay. The operation of the pneumatic device is stopped. Accordingly, a situation in which a command to stop the operation of the moving cleaning device and the pneumatic device is issued at the same time and the blowout airflow of the moving cleaning device acts in a state where the negative pressure of the pneumatic device is reduced due to the delay in stopping the operation of the moving cleaning device. You.

According to a third aspect of the present invention, in the first or second aspect of the invention, at the end of the cotton collecting operation of the cotton collecting chamber, the pneumatic device is restarted before the opening / closing means is closed. Is done. Therefore, by closing the opening / closing means in the stopped state of the pneumatic device, it is possible to prevent the negative pressure of the pneumatic device from dropping so as to hinder the suction of the fleece of the thread cutting weight.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the movable cleaning device is restarted upon completion of the cotton collecting operation in the cotton collecting chamber. Before the operation, the pneumatic device is restarted. Therefore, even if the blowing airflow of the moving cleaning device acts on the thread breakage weight, it is possible to prevent the fleece and the like sent from the roller part from adversely affecting the adjacent weight.

According to a fifth aspect of the present invention, in the invention of any one of the second to fourth aspects, the control means for controlling the pneumatic device controls the operation and stop of the movable cleaning device. Done.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention is applied to a centralized cotton collecting device for a ring spinning machine equipped with a moving cleaning device (blow cleaner) which reciprocates along a spinning machine stand and cleans the spinning machine stand by blowing airflow. An embodiment embodied in FIG.
This will be described with reference to FIG.

As shown in FIG. 1, the fleece delivered from the roller part (not shown) of the draft device 2 upon the yarn breakage during operation on the spinning machine stand 1 adversely affects weights other than the yarn breakage weight. In order to prevent this, a pneumatic device 3 for surely sucking the fleece when the yarn breaks is provided. The suction duct 4 constituting the pneumatic device 3 extends along the longitudinal direction of the spinning machine stand 1 and is connected to a cotton collecting box 5 as a negative pressure source disposed on the out-end OE side of the spinning machine stand 1. ing. The cotton collecting box 5 has a cotton collecting chamber 7 partitioned by a filter 6, and a fan 8 a driven by a motor 8 is provided in a chamber facing the cotton collecting chamber 7 with the filter 6 interposed therebetween. When the motor 8 is driven, the cotton collection chamber 7 becomes a negative pressure, and the suction action is exerted on the suction nozzle 9 connected to the suction duct 4. In this embodiment, a single nozzle type having a pipe connected to the suction duct 4 for each weight is used as the suction nozzle 9.

On the ceiling on the side of the spinning machine stand 1 on the out-end OE side, a main duct 10 is disposed so as to extend in a direction orthogonal to the longitudinal direction of the spinning machine stand 1, as shown in FIG. One end of the main duct 10 is connected to a centralized cotton collecting device 11 common to a plurality of spinning machine stands 1. The centralized cotton collecting apparatus 11 includes a cotton collecting chamber partitioned by a filter, and a blower that generates a suction action in the cotton collecting chamber. The cotton collection chamber 7 is connected to the main duct 10 via a branch duct 12, and a valve 13 is provided in the middle of the branch duct 12 as opening / closing means for opening / closing a communication portion to the main duct 10. Each valve 13 is a control device 1 as control means.
4 is electrically connected. The control device 14 controls the centralized cotton collecting device 11 and each valve 13, and controls each valve 13.
Are opened and closed in a fixed cycle so that their operation timings do not overlap.

A traveling rail 15 is provided above the spinning machine stand 1 along its longitudinal direction, and a movable cleaning device 16 is mounted on the traveling rail 15 so as to be able to reciprocate. A blow pipe 17 and a suction pipe 18 are suspended from both left and right sides of the movable cleaning device 16, respectively. The suction pipe 18 has a length whose lower end reaches the vicinity of the floor surface, and a suction port is provided at the lower end. Spinning machine stand 1 in blowing pipe 17
Are provided with a number of nozzles (not shown) for blowing out the airflow toward the nozzle.

The moving cleaning device 16 performs a cleaning operation while reciprocating along the longitudinal direction of the spinning machine table 1 during the operation of the spinning machine table 1, and when a refilling machine (not shown) performs a refilling operation. It is designed to stand by at an evacuation position that does not hinder the operation of the refilling machine. The spinning machine stand 1 is equipped with a control unit 19 as control means for performing operation control of the machine stand, drive control of the moving cleaning device 16, and the like.

The timing of the cotton collecting operation by the centralized cotton collecting device 11 is set by the control device 14, and when the concentrated cotton collecting time comes, the control device 14 outputs a cotton collecting start signal to the control unit 19, and the control unit 19 transmits the collected cotton. Mobile cleaning device 1 based on start signal
6 and the motor 8 of the pneumatic device 3 are controlled in accordance with the cotton collecting operation. The control unit 19 includes a timer 20, measures the time from the reception of the cotton collection start signal by the timer 20, and outputs a start command signal and a stop command signal to the moving cleaning device 16 and the motor 8.

As shown in FIG. 3, the control section 19 outputs a stop command to the moving cleaning device 16 simultaneously with the reception of the cotton collection start signal, and a predetermined time T4 from the reception of the cotton collection start signal (time t0).
A restart command is output later. This predetermined time T4 is set to be the same as the time from the output of the opening command of the valve 13 to the output of the closing command.

After outputting the stop command to the movable cleaning device 16, the control unit 19 outputs a command to stop the operation of the pneumatic device 3, that is, a command to stop the motor 8 at a predetermined delay time T1. The predetermined delay time T1 is about several seconds. The controller 19 outputs a restart command to the motor 8 after a predetermined time T2 from the output of the stop command of the motor 8. The predetermined time T2 is set such that the restart of the motor 8 is a predetermined time T3 before the closing command is output to the valve 13. The predetermined time T3 is almost the same as the time T1. That is, the control unit 19 activates the pneumatic device 3 before restarting the movable cleaning device 16 upon completion of the cotton collection operation in the cotton collection chamber 7.

Next, the operation of the above-configured device will be described. At the same time as the start of the operation of the spinning machine stand 1, the movable cleaning device 16 starts reciprocating along the traveling rail 15 from one end of the spinning machine stand 1 to the other end. The moving cleaning device 16 cleans the machine base by the airflow blown out from the blowing pipe 17, and reciprocates while sucking and removing fly, dust and the like on the floor surface from the suction port provided at the lower end of the suction pipe 18. I do.

The drive of the motor 8 of the pneumatic device 3 is started simultaneously with the start of the operation of the spinning machine stand 1, so that a negative pressure is generated in the cotton collecting box 5 and a suction action is generated in the suction nozzle 9.
As a result, the fleece sent out from the roller part when the yarn breaks is sucked by the suction nozzle 9. Further, the pneumatic device 3 has an action of sucking a part of the fiber which is not twisted into the yarn and the fly wool during normal spinning. The fleece and the like sucked by the suction nozzle 9 are temporarily stored in the cotton collection chamber 7.

In order to collect the fleece and the like temporarily stored in each cotton collection chamber 7 in the centralized cotton collection device 11, the control device 14 collects the collected data in the control unit 19 of each spinning machine 1 at a predetermined cycle. A cotton signal is output, and the opening and closing of the valve 13 is controlled. As shown in FIG. 3, the concentrated cotton collection signal is applied for a predetermined time T.
5, while the centralized cotton collection signal is output, the cotton collection work for the spinning machine stand 1 is performed. At the same time as the output of the concentrated cotton collection signal, an open command is output to the valve 13 and the valve 13 is opened. There is some delay until the valve 13 changes from the fully closed state to the fully opened state.

The control unit 19 outputs an operation stop command to the mobile cleaning device 16 immediately after receiving the centralized cotton collection signal from the control device 14. That is, at the same time that the opening command is output to the valve 13, the operation stop command is output from the control unit 19 to the movable cleaning device 16. At the same time as the operation stop command is output to the mobile cleaning device 16, the measurement of the elapsed time by the timer 20 is started. Then, after a lapse of a predetermined time T1, a stop command is output from the control unit 19 to the motor 8, and the driving of the motor 8 is stopped. When the motor 8 is stopped,
The negative pressure action on the cotton collection chamber 7 by the fan 8a is stopped. The moving cleaning device 16 is stopped with a slight delay (usually 1 to 2 seconds) after the operation stop command is output, and the motor 8 stops after the moving cleaning device 16 is stopped.

In the state where the negative pressure by the fan 8a is acting on the cotton collecting chamber 7, the negative pressure by the fan 8a is strong, and the valve 1
3 is opened and the suction action of the main duct 10 is
Fleece or the like in the cotton collection chamber 7 is hardly conveyed to the main duct 10. When the motor 8 is stopped while the suction action of the main duct 10 is acting on the cotton collection chamber 7, the negative pressure by the fan 8a disappears, and the fleece and the like in the cotton collection chamber 7 are concentrated by the suction action of the main duct 10. It is transported to the device 11.

After the valve 13 is opened, a predetermined time T1
Since the motor 8 is stopped with a delay, the negative pressure P in the cotton collection chamber 7 is
Varies as shown by the solid line in FIG. That is, the negative pressure gradually increases from P0 with the opening of the valve 13 whose opening operation is started at the time t0, reaches a maximum (Pmax) when the valve 13 is fully opened, and the motor 8 stops ( That size is maintained until time t1). Then, the negative pressure gradually decreases as the motor 8 stops.
Therefore, the fleece and the like are more easily conveyed to the main duct 10 than when the motor 8 is stopped at the same time when the valve 13 is opened. Note that a chain line indicates a change in negative pressure when the motor 8 is stopped without opening the valve 13.

When a predetermined time T2 has elapsed since the motor 8 was stopped, a restart command is output from the control unit 19 to the motor 8, and the driving of the motor 8 is restarted.
Then, a state in which the negative pressure due to a acts is obtained. Then, the suction action of the suction nozzle 9 does not hinder the suction of the fleece or the like at the time of thread breakage even if the blowing airflow of the moving cleaning device 16 is present again. After a lapse of a predetermined time T3 from the restart of the motor 8, the valve 13 is closed by a command from the control device 14, and the movable cleaning device 16 is restarted by a command from the control unit 19. Thereafter, the centralized cotton collection signal output from the control device 14 is turned off.

This embodiment has the following effects. (1) The spinning machine stand 1 equipped with the cotton collection chamber 7 during the cotton collection work on the centralized cotton collection device 11 such as the fleece in the cotton collection chamber 7
The operation of the moving cleaning device 16 that cleans is stopped. Therefore, at the time of the cotton collecting operation in which the suction force of the suction nozzle 9 for sucking the fleece of the thread cutting weight or the like is reduced, the fleece of the thread cutting weight is entangled with the spun yarn of the adjacent weight by the action of the blowing airflow of the moving cleaning device 16. It can be prevented that the thread breaks.

(2) During the operation of collecting cotton such as fleece from the cotton collection chamber 7, the operation of the moving and cleaning device 16 is stopped, and then the operation of the pneumatic device 3 (drive of the motor 8) is stopped.
Therefore, in a state where the negative pressure in the suction duct 4 is reduced in a state where the suction nozzle 9 of the pneumatic device 3 does not hinder the suction of the fleece or the like of the thread cutting weight against the blowing airflow of the moving cleaning device 16. Therefore, there is no possibility that the airflow blown out from the moving cleaning device 16 acts.

(3) At the end of the cotton collecting operation in the cotton collecting chamber 7, the motor 8 is restarted before the valve 13 is closed. Therefore, by closing the valve 13 while the pneumatic device 3 is stopped, it is possible to prevent the negative pressure of the suction duct 4 from dropping so as to hinder the suction of the fleece of the thread cutting weight.

(4) The motor 8 is restarted before the movable cleaning device 16 is restarted with the end of the cotton collecting operation in the cotton collecting chamber 7. Therefore, even if the airflow blown out of the movable cleaning device 16 acts on the yarn breakage weight, it is possible to prevent the fleece and the like sent from the roller part from adversely affecting the adjacent weight.

(5) The controller 19 for controlling the pneumatic device 3 controls the operation and stop of the movable cleaning device 16. Therefore, the control device 14 of the centralized cotton collecting device 11
As compared with the case where the moving cleaning device 16 is controlled by
The moving cleaning device 16 and the pneumatic device 3 are moved for a predetermined time T1,
Control for stopping and restarting with a delay of T3 is simplified.

(6) After the valve 13 is opened, the motor 8 is stopped with a delay of a predetermined time T1.
The fleece and the like are more easily conveyed to the main duct 10 than when the motor 8 is stopped at the same time when the motor is opened.

(7) Since the opening and closing of the valve 13 and the stop / restart of the movable cleaning device 16 are performed at the same timing, the control is performed in comparison with the case where the operation is controlled with a delay of a predetermined time. It's easy.

(8) When the fleece or the like in the cotton collecting chamber 7 is collected in the centralized cotton collecting device 11, the motor 8 is driven at a low speed to stop the motor 8 and stop the generation of negative pressure by the fan 8a. Control becomes simpler than in the case.

(9) The movable cleaning device 16 is mounted on each spinning machine base 1
Since the movable cleaning device 16 is provided for each spinning machine, the moving cleaning device 16 can efficiently perform the cleaning operation without being affected by the operating conditions of the other spinning machine stands 1.

The embodiment is not limited to the above, but may be modified as follows, for example. In place of the configuration in which the moving cleaning device 16 is provided for each spinning machine stand 1, the moving cleaning device 16 is configured to be shared by a plurality of spinning machine stands 1. For example, as shown in FIG. 5, the moving cleaning device 16 is configured to circulate along a closed rail running rail 21 provided over a plurality of spinning machine stands 1. The moving cleaning device 16 has a blowing pipe 1 on one side opposite to the spinning machine table 1 when moving along the spinning machine table 1.
7 and a suction pipe 18 are provided. A light projector 22 that outputs a stop command to the moving cleaning device 16 is provided at an end of the spinning machine stand 1, and a light receiving device 23 that receives light emitted from the light projector 22 is provided in the moving cleaning device 16. The moving cleaning device 16 is provided with a circuit that stops the operation of the moving cleaning device 16 when the light receiver 23 receives the light emitted from the light projector 22. Further, the spinning machine stand 1 is provided with a detecting means (not shown) for detecting whether or not the moving cleaning device 16 is moving along the spinning machine stand 1.

The control unit 19 determines whether or not the mobile cleaning device 16 is moving along the spinning machine stand 1 based on the detection signal of the detection means when receiving the concentrated cotton collection signal from the control device 14. And If the moving cleaning device 16 is moving along the spinning machine table 1, the control unit 19 controls the moving cleaning device 16 and the motor 8 in the same manner as in the above-described embodiment. When the movable cleaning device 16 is not moving along the spinning machine table 1, the control unit 19 outputs a lighting command to the light projector 22 and outputs a stop command to the motor 8. Then, after the cotton collection operation is completed, that is, after the motor 8 is restarted, a light-off instruction is output to the light projector 22. Therefore, the mobile cleaning device 1
If 6 is moving along the spinning machine stand 1 requiring the cotton collecting operation, the moving and cleaning device 16 is stopped and the cotton collecting operation is performed in the same manner as in the above embodiment. In addition, the mobile cleaning device 16
Is not moving along the spinning machine table 1 requiring the cotton collecting operation, the cotton collecting operation is performed with the operation of the moving and cleaning device 16 continued. Then, when the movable cleaning device 16 reaches the end of the spinning machine stand 1 during the cotton collecting operation, the light receiving device 23
Receives the light emitted from the light emitter 22, the movable cleaning device 16 is stopped, and waits at the position. When the light emitter 22 is turned off after the cotton collecting operation is completed, the light receiver 23 stops receiving the light emitted from the light emitter 22 and the movable cleaning device 16 is restarted.
Therefore, the mobile cleaning device 1 shared by a plurality of spinning machine stands 1
6 is prevented from being stopped needlessly. When the mobile cleaning device 16 is shared by a plurality of spinning machine stands 1, the traveling route may not be a closed loop but may have both ends, and the moving cleaning device 16 may be folded at both ends of the traveling route.

The time during which the valve 13 is opened and the time during which the movable cleaning device 16 is stopped may be the same as the ON time of the centralized cotton collection signal. That is, the predetermined time T4 in the time chart of FIG.
And the predetermined time T5. In this case, the valve 13
The control is performed by closing the valve 13 and restarting the movable cleaning device 16 based on the fall of the concentrated cotton collection signal from ON to OFF without measuring the opening time of the movable cleaning device 16 and the stop time of the movable cleaning device 16. It's easy.

The operation of the pneumatic device 3 may not be stopped during the cotton collecting operation from the cotton collecting chamber 7, and the motor 8 may be rotated at a low speed to reduce the negative pressure by the fan 8a.
For example, a pole number switching motor is used as the motor 8, and the number of revolutions is reduced without stopping the motor 8 during the cotton collecting operation.

The operation stop command to the moving cleaning device 16 and the operation stop command to the pneumatic device 3 may be simultaneously output. In this case, if the operation of the pneumatic device 3 is stopped when the weight at the position facing the outlet of the movable cleaning device 16 is broken, the fleece of the broken weight may adversely affect the adjacent weight. . However, the mobile cleaning device 16
Since the probability of starting the cotton collection work from the cotton collection chamber 7 is small when the weight facing the outlet of
Almost no problem.

The restarting time of the movable cleaning device 16 and the restarting time of the pneumatic device 3 at the end of the cotton collecting operation of the cotton collecting room 7 may be the same. The closing time of the valve 13 for terminating the cotton collecting operation in the cotton collecting chamber 7 may be the same as the restarting time of the pneumatic device 3. In this case, there is no need to measure the predetermined time T2 with the timer 20, and the control is simplified accordingly.

Operation and stop control of the movable cleaning device 16 may be performed by the control device 14. A so-called flute-type suction nozzle having a pipe in which a plurality of suction ports are formed at the same pitch as the weight may be used as the suction nozzle.

The present invention is not limited to the ring spinning machine, but may be applied to a ring twisting machine having a pneumatic device. In the case of the ring twisting machine, a roller part for sending out the yarn is provided instead of the draft device, and the yarn is sucked by the pneumatic device 3 when the yarn breaks.

The technical ideas (inventions) other than those described in the claims, which can be understood from the above embodiments, will be described below together with their effects. (1) In the invention according to any one of claims 1 to 5, the control means stops the pneumatic device with a predetermined time delay after the opening / closing means is opened. in this case,
The fleece and the like are more easily conveyed to the main duct than when the pneumatic device is stopped simultaneously with opening of the opening / closing means.

(2) In the invention according to any one of the first to fifth aspects, the movable cleaning device is provided for each spinning machine stand. In this case, the moving cleaning device can perform the cleaning operation efficiently without being affected by the operation state of the other spinning machine stands.

(3) A moving cleaning device that moves along the spinning machine table and a pneumatic device for sucking fleece and the like supplied from the roller part when the yarn breaks are provided. In a centralized cotton collecting device of a spinning machine connected to a main duct connected to a centralized cotton collecting device common to a plurality of spinning machine stands via a branch duct provided with opening / closing means, the cotton collecting operation of the cotton collecting chamber is performed in a predetermined manner. A method of collecting cotton by a centralized cotton collecting device in a spinning machine that periodically performs the operation in order and stops the operation of a moving and cleaning device of a spinning machine stand provided with the cotton collecting room during the cotton collecting operation. In this case, it is possible to prevent the blowing airflow from the movable cleaning device from adversely affecting the yarn breakage weight during the cotton collecting operation.

[0051]

As described in detail above, claims 1 to 5 are provided.
According to the invention described in the above, at the time of cotton collecting work in which the suction force of the suction nozzle for sucking the fleece of the thread breakage weight is reduced, the fleece of the thread breakage weight spins the adjacent weight by the action of the blowing airflow of the moving cleaning device. It is possible to prevent the yarn from getting entangled with the yarn or causing the yarn to break.

According to the second aspect of the present invention, the yarn breakage is performed in a state where the suction action of the pneumatic device hinders suction of the fleece or the like of the thread breakage weight against the blowing airflow of the moving cleaning device. Sometimes, there is no fear that the fleece or the like supplied from the roller part is affected by the blowing airflow of the movable cleaning device.

According to the third aspect of the present invention, during the operation of collecting cotton from the cotton collecting chamber, the negative pressure of the suction duct of the pneumatic device may decrease so as to hinder the suction of the fleece of the thread breakage weight. Be avoided.

According to the fourth aspect of the present invention, when the movable cleaning device is restarted with the completion of the cotton collecting operation in the cotton collecting chamber, the blowing airflow of the movable cleaning device acts on the thread breakage weight. However, it is possible to prevent the fleece and the like sent from the roller part from adversely affecting the adjacent weight.

According to the fifth aspect of the present invention, since the operation and stop control of the moving cleaning device are performed by the control means for controlling the pneumatic device, the moving cleaning device and the pneumatic device are delayed by a predetermined time. Control for stopping and restarting is simplified.

[Brief description of the drawings]

FIG. 1 is a schematic side view of one embodiment.

FIG. 2 is a schematic plan view.

FIG. 3 is a timing chart showing an operation at the time of concentrated cotton collection.

FIG. 4 is a graph showing a change in negative pressure in the cotton collecting chamber.

FIG. 5 is a schematic plan view of another embodiment.

[Explanation of symbols]

1 ... spinning machine stand, 3 ... pneumatic device, 7 ... cotton collecting room, 10 ...
Main duct, 11: Centralized cotton collecting device, 12: Branch duct, 13: Valve as opening / closing means, 16: Moving cleaning device, 19: Control unit as control means.

Claims (5)

[Claims] 1. A moving cleaning device which moves along a spinning machine stand, and a pneumatic device for sucking a fleece or the like supplied from a roller part when a yarn breaks, are provided, and a plurality of cotton collecting chambers of the pneumatic device are provided. A cotton collecting control device of a centralized cotton collecting device in a spinning machine connected via a branch duct having an opening / closing means to a main duct connected to a centralized cotton collecting device common to the spinning machine stand; A cotton collecting control device of a centralized cotton collecting device in a spinning machine provided with control means for stopping the operation of a movable cleaning device for cleaning a spinning machine table provided with the cotton collecting room during a cotton collecting operation. 2. The collection of a centralized cotton collecting apparatus in a spinning machine according to claim 1, wherein said control means outputs an operation stop command of said pneumatic device with a predetermined delay time after stopping the operation of said movable cleaning device. Cotton control device. 3. The concentration in the spinning machine according to claim 1, wherein the control means restarts the pneumatic device before closing the opening / closing means for terminating the cotton collecting operation in the cotton collecting chamber. Cotton collection control device of cotton collection device. 4. The pneumatic device according to claim 1, wherein the control means restarts the pneumatic device before restarting the movable cleaning device upon completion of the cotton collecting operation in the cotton collecting chamber. Item 4. A cotton collecting control device for a centralized cotton collecting device in a spinning machine according to Item 6. 5. The centralized cotton collecting apparatus in a spinning machine according to claim 2, wherein one of the control means controls the operation and stop of the pneumatic device and the movable cleaning device. Cotton control device.