JP2020117825A - Spinning method, spinning machine, and spinning program - Google Patents

Abstract

To further improve yarn quality.SOLUTION: A spinning method is practiced by a spinning machine 1 where a fiber bundle S is drafted in a draft device 6, and the drafted fiber bundle S is spun by an air spinning device 7 to generate a yarn Y. The spinning method includes: a first acquisition step of acquiring fiber bundle information showing the fiber bundle S before the draft; a second acquisition step of acquiring yarn information showing the state of the generated yarn Y; and a change step of changing the total draft ratio of the draft performed by the draft device 6 based on the fiber bundle information acquired by the first acquisition step and the yarn information acquired by the second acquisition step.SELECTED DRAWING: Figure 3

Description

The present invention relates to a spinning method, a spinning machine, and a spinning program.

There is a spinning machine that drafts a fiber bundle by a drafting device and spins the drafted fiber bundle by a spinning device to generate a yarn. A spinning machine equipped with such a draft device is described in Patent Document 1, for example.

JP, 2014-9422, A

In the spinning machine as described above, the yarn quality can be further improved by setting the total draft ratio of the draft device more appropriately.

Therefore, an object of the present invention is to provide a spinning method, a spinning machine, and a spinning program that can further improve the yarn quality.

The spinning method according to the present invention is a spinning method that is executed by a spinning machine that drafts a fiber bundle in a drafting device and spins the drafted fiber bundle by a spinning device to generate a yarn. The first acquisition step of acquiring the fiber bundle information indicating the state, the second acquisition step of acquiring the yarn information indicating the status of the generated yarn, the fiber bundle information acquired in the first acquisition step, and the second acquisition The changing step of changing the total draft ratio of the draft performed by the draft device based on the yarn information acquired in the step.

In this spinning method, the total draft ratio can be changed using two pieces of information, that is, fiber bundle information and yarn information, and the total draft ratio can be set more appropriately. Therefore, according to this spinning method, the yarn quality can be further improved.

In the spinning method, in the changing step, when the fiber bundle information indicates that the mass of the fiber bundle has increased, and the thread information indicates that the thickness of the thread has increased or the mass of the thread has increased, the total draft If the ratio is increased and the fiber bundle information indicates that the mass of the fiber bundle has decreased, and the thread information indicates that the thickness of the thread has decreased or the mass of the thread has decreased, decrease the total draft ratio. Good. According to this spinning method, it is possible to appropriately determine how to change the total draft ratio.

The spinning method further includes an operation control step of controlling a draft operation in the draft device and a spinning operation in the spinning device. In the operation control step, the total draft ratio is changed in the changing step before the total draft ratio is changed in the changing step. The drafting operation in the drafting device and the spinning operation in the spinning device may be continued after the completion of the operation. According to this spinning method, even if the total draft ratio is changed, the yarn can be continuously generated in the spinning machine, and the productivity of the spinning machine can be maintained.

In the spinning method, in the changing step, when the variation amount of the fiber bundle information is equal to or more than the fiber bundle lower limit variation amount and less than or equal to the first fiber bundle variation amount continues for the first fiber bundle length or more, and the yarn information variation amount. The total draft ratio may be changed in at least one of the case where the condition where the value is equal to or more than the yarn lower limit variation amount and equal to or less than the first yarn variation amount continues for the first yarn length or more. According to this spinning method, based on the fluctuation amount of the fiber bundle information and the fluctuation amount of the yarn information, when the fluctuation amount continues to be the first fiber bundle fluctuation amount or less or the first yarn fluctuation amount or less, The total draft ratio can be changed. As a result, by performing the drafting operation with the changed total draft ratio, the difference in the quality of the yarn generated before and after the change can be kept within a certain range.

In the spinning method, in the operation control step, the state in which the variation amount of the fiber bundle information obtained in the first obtaining step exceeds the first fiber bundle variation amount continues for the first fiber bundle length or more, and the second acquisition In at least one of the case where the fluctuation amount of the yarn information acquired in the step exceeds the first yarn fluctuation amount and continues for the first yarn length or more, the draft operation in the draft device and the spinning operation in the spinning device are stopped. May be. According to this spinning method, the draft operation and the spinning operation are stopped when the state in which the fluctuation amount is large continues, so that it is possible to stop the continuous production of the yarn of low quality.

In the spinning method, the spinning machine further includes a yarn information detection device that detects yarn information, and the yarn information detection device determines that the variation amount of the yarn information is the second yarn variation amount based on the detected yarn information. When it is determined that the exceeding condition continues for the second yarn length or more, it is determined that the yarn has a yarn defect, the second yarn variation amount is larger than the first yarn variation amount, and the second yarn variation amount is larger than the second yarn length. May be shorter than the first yarn length, and in the operation control step, when the yarn information detecting device determines that there is a yarn defect, the drafting action in the drafting device and the spinning action in the spinning device may be stopped. According to this spinning method, for example, when a yarn defect having a large fluctuation amount and a short length is detected, the drafting operation and the spinning operation can be stopped. As a result, such short yarn defects can be removed while the drafting operation and the spinning operation are stopped.

In the spinning method, the spinning machine further includes a tension notifying device that notifies the fluctuation of the tension of the generated yarn, and confirms that the fiber bundle information acquired in the first acquisition step does not change the mass of the fiber bundle. And the thread information acquired in the second acquisition step indicates that the tension of the thread has increased, or the fiber bundle information acquired in the first acquisition step indicates that the mass of the fiber bundle has decreased, and When the thread information acquired in the second acquisition step indicates that the tension of the thread has increased, a tension notification control step of notifying by a tension notification device may be further included. According to this spinning method, the operator can be notified that the tension of the generated yarn is abnormal.

The spinning method may further include a first determination step of determining necessity of notification based on the fiber bundle information acquired in the first acquisition step and the yarn information acquired in the second acquisition step. According to this spinning method, it is possible to appropriately determine the necessity of notification.

The spinning method further includes a first count predicting step of predicting a predicted count that is the count of the yarn generated by the spinning device based on the fiber bundle information acquired in the first acquisition step, and in the first determination step, Based on the predicted count predicted in the first count prediction step and the acquired count that is the yarn count indicated by the yarn information acquired in the second acquisition step, it is determined whether or not to notify the occurrence of fiber loss. Good. Further, in the spinning method, in the first determining step, when the predicted count and the acquired count do not match, it may be determined that the notification of the occurrence of the fiber loss is necessary. According to this spinning method, when the fiber loss occurs, it can be notified that the fiber loss occurs.

The spinning method may further include a second determination step of determining necessity of notification based on the fiber bundle information acquired in the first acquisition step and the setting information of the yarn to be generated set in the spinning machine. Good. According to this spinning method, the necessity of notification can be determined based on the fiber bundle information and the setting information.

The spinning method further includes a second count predicting step of predicting a predicted count that is the count of the yarn generated by the spinning machine based on the fiber bundle information acquired in the first acquiring step, and in the second determining step, Based on the predicted count predicted in the second count prediction step and the set count which is the yarn count set in the spinning machine as the yarn setting information, the notification of the occurrence of the supply error of the fiber bundle to the spinning machine is given. It may be determined whether or not it is necessary, or whether or not it is necessary to notify the occurrence of the falling of the fiber bundle in the drawing machine that generates the fiber bundle. According to this spinning method, it is possible to appropriately determine whether or not it is necessary to notify the occurrence of a fiber bundle supply error, or whether or not to notify of the occurrence of the fiber bundle dropout in the kneading machine.

In the spinning method, in the second determination step, when it is determined that the notification of the occurrence of the fiber bundle dropout is necessary, the kneading step is performed a plurality of times using the kneading machine based on the reduction rate of the predicted number with respect to the set number. It may be further determined in which of the above-mentioned drawing steps the fiber bundle has fallen out. The state (mass) of the generated fiber bundle differs depending on in which drawing process the fiber bundle has fallen off. Therefore, according to this spinning method, it is possible to determine in which drawing process the slipping of the fiber bundle has occurred, by using the reduction ratio of the predicted count with respect to the set count.

In the spinning method, in the second determination step, when the predicted count is larger than the set count, it is determined that it is necessary to notify the occurrence of the fiber bundle dropout, and when the predicted count is smaller than the set count, the fiber bundle spinning machine is operated. It may be determined that the notification of the occurrence of the supply error is necessary. According to this spinning method, it is possible to appropriately determine whether the fiber bundle has fallen out and the fiber bundle supply error has occurred.

The spinning machine further includes an informing device for informing, and the spinning method may further include an informing control step of informing by the informing device when it is determined that the informing is necessary by the determination of necessity of the informing. Good. According to this spinning method, it is possible to notify the operator that a situation requiring notification has occurred.

The spinning method further includes an operation control step of controlling a draft operation in the draft device and a spinning operation in the spinning device, and in the operation control step, when the notification is determined to be necessary by the determination of necessity of the notification, the draft in the draft device is performed. The operation and the spinning operation in the spinning device may be stopped. According to this spinning method, it is possible to prevent the yarn from being continuously generated when it is determined that the notification is necessary.

The spinning machine according to the present invention includes a draft device that drafts a fiber bundle, a fiber bundle information detection device that detects fiber bundle information indicating a state of the fiber bundle before drafting, and/or a fiber bundle information reception that receives the fiber bundle information. Device, a spinning device that spuns a fiber bundle drafted by the drafting device to generate a yarn, a yarn information detection device that detects yarn information indicating the state of the yarn generated by the spinning device, and a spinning device that generates the yarn information. And a control unit that executes any one of the above spinning methods, the control unit detecting the fiber bundle information detection device in the first acquisition step and/or the fiber bundle. The fiber bundle information received by the information receiving device is acquired, and the yarn information detected by the yarn information detecting device in the second acquisition step is acquired.

This spinning machine can more appropriately set the total draft ratio by changing the total draft ratio using two pieces of information, that is, fiber bundle information and yarn information. Therefore, according to this spinning machine, the yarn quality can be further improved.

The spinning program according to the present invention, in a spinning machine that drafts a fiber bundle in a drafting device, and spins the drafted fiber bundle in a spinning device to generate a yarn, the fiber bundle information indicating the state of the fiber bundle before drafting A process of acquiring, a process of acquiring the yarn information indicating the state of the generated yarn, a process of changing the total draft ratio of the draft performed by the draft device, based on the obtained fiber bundle information and the yarn information, Causes the computer to execute.

According to this spinning program, the total draft ratio can be set more appropriately by changing the total draft ratio using two pieces of information, that is, fiber bundle information and yarn information. Therefore, according to this spinning program, the yarn quality can be further improved.

According to the present invention, the yarn quality can be further improved.

It is a front view showing the spinning machine concerning an embodiment. It is a side view which shows the spinning unit of FIG. It is a block diagram which shows the function structure of a unit controller. 9 is a list showing each pattern example when the draft ratio changing unit controls the total draft ratio based on the yarn thickness acquired by the second acquiring unit. It is a list showing each pattern example when a draft ratio change part controls a total draft ratio based on the mass of the thread acquired by the 2nd acquisition part. It is a list showing each pattern example in the case where the draft ratio changing unit controls the total draft ratio based on the yarn tension acquired by the second acquisition unit. It is a flow chart which shows a flow of processing of information control about a fiber bundle performed with a unit controller. It is a figure which shows the spinning program which concerns on embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description.

As shown in FIG. 1, the spinning machine 1 according to the present embodiment carries out a spinning method of drafting a fiber bundle S and spinning the drafted fiber bundle S to produce a yarn Y. The spinning machine 1 includes a plurality of spinning units 2, a yarn splicing cart 3, a doffing cart (not shown), a first end frame 4, and a second end frame 5. The plurality of spinning units 2 are arranged side by side in a row. Each spinning unit 2 generates a yarn Y and winds it on a package P. The yarn splicing cart 3 performs the yarn splicing operation in the spinning unit 2 when the yarn Y is cut in a certain spinning unit 2 or the yarn Y is cut for some reason. The doffing cart doffs the package P and supplies a new bobbin B to the spinning unit 2 when the package P is fully wound in a certain spinning unit 2.

The first end frame 4 accommodates a collecting device or the like that collects cotton wool (fiber waste, yarn waste, etc.) generated in the spinning unit 2. The second end frame 5 adjusts the air pressure of compressed air (air) supplied to the spinning machine 1 to supply air to each part of the spinning machine 1, and supplies power to each part of the spinning unit 2. A drive motor and the like for driving are accommodated. The second end frame 5 is provided with a machine control device 100, a display screen (tension notification device, notification device) 102, and an input key 104. The machine stand control device 100 centrally manages and controls each unit of the spinning machine 1. The display screen 102 can display information regarding at least one of the setting content and the state of the spinning unit 2. The operator can perform a setting operation of the spinning unit 2 by performing an appropriate operation using the input key 104. The display screen 102 may be a touch panel display, and the touch panel display may be operated instead of the input key 104.

The machine control device 100 is an electronic control unit (computer) that performs various kinds of arithmetic processing and control processing of each unit. The machine control device 100 includes, for example, a processor (for example, a CPU [Central Processing Unit]) that executes various programs, a storage unit including a ROM [Read Only Memory], a RAM [Random Access Memory], a hard disk, and the like. And a communication unit or the like for controlling communication with each unit.

As shown in FIGS. 1 and 2, each spinning unit 2 includes a draft device 6, an air spinning device (spinning device) 7, a yarn monitoring device (yarn information detection) in order from the upstream side in the traveling direction of the yarn Y. Device 8), a tension sensor 9, a yarn accumulating device 11, a waxing device 12, and a winding device 13. The unit controller (control unit) 10 is provided for each of the predetermined number of spinning units 2. The unit controller 10 is, for example, similar to the machine control device 100, a processor that executes various programs, a storage unit 58 (see FIG. 8) including a ROM, a RAM, a hard disk, and the like, and communication with each unit. An electronic control unit (computer) having a communication unit for controlling the.

The fiber bundle S drawn from the can K is supplied to the draft device 6 via the creel device 40. Further, the creel device 40 is provided with a fiber bundle sensor (fiber bundle information detecting device) 20. The fiber bundle sensor 20 acquires fiber bundle information indicating the state of the fiber bundle S drafted by the draft device 6. In the present embodiment, as the fiber bundle sensor 20, an electrostatic capacitance type sensor that detects the temporal change of the mass of the fiber bundle S (hereinafter referred to as “fiber bundle mass”) by passing the fiber bundle S in an electric field is used. To be The fiber bundle sensor 20 transmits the temporal change in the detected fiber bundle mass to the unit controller 10 as fiber bundle information.

The fiber bundle mass may be determined, for example, when the maintenance of the kneading machine that has generated the fiber bundle S is inadequate, when the can K storing the fiber bundle S has been informed for a long time, or when the raw material of the fiber bundle S is used. It may change when there is a change in itself or when the storage environment (temperature and humidity) of the can K has changed.

The draft device 6 drafts (stretches) the fiber bundle (sliver) S supplied to the pneumatic spinning device 7. The draft devices 6 are arranged in a line in line with the spinning units 2 arranged in parallel. The draft device 6 has a back roller pair 14, a third roller pair 15, a middle roller pair 16, and a front roller pair 17 in order from the upstream side in the traveling direction of the fiber bundle S.

The back roller pair 14 includes a back bottom roller 14a and a back top roller 14b. The back bottom roller 14a and the back top roller 14b are rollers that draft the fiber bundle S, and face each other with a travel route (hereinafter, simply referred to as "travel route") along which the fiber bundle S travels. The third roller pair 15 includes a third bottom roller 15a and a third top roller 15b. The third bottom roller 15a and the third top roller 15b are rollers that draft the fiber bundle S, and are opposed to each other across the traveling path. The middle roller pair 16 includes a middle bottom roller 16a and a middle top roller 16b. The middle bottom roller 16a and the middle top roller 16b are rollers that draft the fiber bundle S, and are opposed to each other across the traveling path. The front roller pair 17 includes a front bottom roller 17a and a front top roller 17b. The front bottom roller 17a and the front top roller 17b are rollers that draft the fiber bundle S, and face each other across the traveling path.

The back bottom roller 14a is rotated by a drive motor (hereinafter referred to as "back bottom roller drive motor") provided for each spinning unit 2. The third bottom roller 15a is also rotated by another drive motor provided for each spinning unit 2. The middle bottom roller 16a and the front bottom roller 17a are each rotated by a drive motor in the second end frame 5. In the second end frame 5, a drive motor that drives the middle bottom rollers 16a of the plurality of spinning units 2 at the same time, and a drive motor that drives the front bottom rollers 17a of the plurality of spinning units 2 at the same time are provided. .. The back bottom roller 14a, the third bottom roller 15a, the middle bottom roller 16a, and the front bottom roller 17a are rotated at different rotational speeds so that the rollers on the downstream side are faster. An apron belt 18a is provided for the middle bottom roller 16a. An apron belt 18b is provided for the middle top roller 16b.

The draft device 6 can change the total draft ratio when the draft device 6 drafts the fiber bundle S by changing the rotation speed of the back bottom roller drive motor. The draft device 6 changes the total draft ratio by changing the rotation speed of the back bottom roller drive motor based on an instruction from the unit controller 10.

As shown in FIGS. 1 and 2, the pneumatic spinning device 7 produces a yarn Y by twisting the fiber bundle F drafted by the drafting device 6 with a swirling airflow. The pneumatic spinning device 7 is arranged downstream of the draft device 6 in the traveling direction of the fiber bundle F and the yarn Y during spinning.

The yarn monitoring device 8 monitors the traveling yarn Y between the pneumatic spinning device 7 and the yarn storage device 11 and detects yarn information indicating the state of the generated yarn Y. The yarn monitoring device 8 transmits the detected yarn information to the unit controller 10. The yarn monitoring device 8 also detects the presence or absence of a yarn defect based on the yarn information. When the yarn monitoring device 8 detects a yarn defect, it sends a yarn defect detection signal to the unit controller 10. The yarn monitoring device 8 detects, for example, a yarn breakage of the yarn Y, an abnormality in the thickness of the yarn Y (hereinafter, referred to as “thread thickness”), or a foreign substance contained in the yarn Y as the yarn defect. In the present embodiment, the yarn monitoring device 8 detects the yarn thickness (apparent thickness) as the yarn information. As such a yarn monitoring device 8, an optical sensor that irradiates the yarn Y with light and detects a temporal change in the yarn thickness by a change in the amount of received light can be used. That is, in the present embodiment, the yarn monitoring device 8 detects a temporal change in the yarn thickness as the yarn information.

The tension sensor 9 measures the tension of the traveling yarn Y between the pneumatic spinning device 7 and the yarn accumulating device 11, and sends a tension measurement signal to the unit controller 10. When the unit controller 10 determines that there is an abnormality based on the detection result of at least one of the yarn monitoring device 8 and the tension sensor 9, the yarn Y is cut in the spinning unit 2.

The yarn storage device 11 stores the yarn Y between the pneumatic spinning device 7 and the winding device 13. The yarn accumulating device 11 has a function of stably pulling out the yarn Y from the pneumatic spinning device 7. The yarn accumulating device 11 has a function of retaining the yarn Y sent from the air spinning device 7 to prevent the yarn Y from loosening during a yarn splicing operation of the yarn splicing carriage 3, and a downstream side of the yarn accumulating device 11. It has a function of preventing fluctuations in the tension of the yarn Y from being transmitted to the pneumatic spinning device 7. The waxing device 12 applies wax to the yarn Y between the yarn accumulating device 11 and the winding device 13.

The winding device 13 winds the yarn Y around the bobbin B to form the package P. The winding device 13 includes a cradle arm 21, a winding drum 22, and a traverse guide 23. The cradle arm 21 rotatably supports the bobbin B. A drive motor (not shown) provided on the second end frame 5 simultaneously drives the winding drums 22 of the plurality of spinning units 2. The traverse guide 23 is provided on a shaft 25 shared by the plurality of spinning units 2. The traverse guide 23 traverses the yarn Y in a predetermined width by the drive motor of the second end frame 5 reciprocally driving the shaft 25 in the rotation axis direction of the winding drum 22.

When the yarn Y is cut in a certain spinning unit 2 or the yarn Y is cut for some reason, the yarn joining carriage 3 travels to the spinning unit 2 and performs the yarn joining operation. The yarn splicing cart 3 includes a yarn splicing device 26, a suction pipe 27, and a suction mouth 28. The suction pipe 27 is rotatably supported by the support shaft 31, and catches the yarn Y from the pneumatic spinning device 7 and guides it to the yarn joining device 26. The suction mouth 28 is rotatably supported by a support shaft 32, and catches the yarn Y from the winding device 13 and guides it to the yarn joining device 26. The yarn joining device 26 joins the guided yarns Y together. The yarn joining device 26 is a splicer using compressed air, a knotter that mechanically joins the yarn Y, or the like. The yarn joining device 26 is configured to perform yarn joining by sending the yarn Y from the package P back to the pneumatic spinning device 7 and restarting the drafting operation of the drafting device 6 and the spinning operation of the pneumatic spinning device 7. It may have been done.

Next, details of various controls performed by the unit controller 10 will be described. The unit controller 10 controls the operation of each part of the spinning unit 2. Below, among various controls performed by the unit controller 10, change control of the total draft ratio and notification control regarding the fiber bundle S or the yarn Y will be described.

As shown in FIG. 3, the unit controller 10 is functionally the first acquisition unit 51, the second acquisition unit 52, the draft ratio change unit 53, the count prediction unit 54, the notification determination unit 55, and the notification control unit 56. , An operation control unit 57, and a storage unit 58 (see FIG. 8).

The first acquisition unit 51 acquires fiber bundle information (fiber bundle mass) indicating the state of the fiber bundle S before being drafted by the draft device 6 from the fiber bundle sensor 20. In this way, the first acquisition unit 51 executes the first acquisition step of acquiring the fiber bundle information indicating the state of the fiber bundle S before drafting.

The second acquisition unit 52 acquires, from the yarn monitoring device 8, yarn information (yarn thickness) indicating the state of the yarn Y generated by the pneumatic spinning device 7. In this way, the second acquisition unit 52 executes the second acquisition step of acquiring the thread information indicating the state of the generated thread Y.

The draft ratio changing unit 53 changes the total draft ratio of the draft performed by the draft device 6. The draft ratio changing unit 53 outputs a control signal to the draft device 6 to control the rotation speed of the back bottom roller drive motor, thereby changing the total draft ratio. Details of the change control of the total draft ratio will be described later.

The count predicting unit 54 predicts the predicted count, which is the count of the yarn Y generated by the air spinning device 7, based on the fiber bundle mass acquired by the first acquiring unit 51. For example, the count predicting unit 54 predicts by a known method based on the fiber bundle mass acquired by the first acquiring unit 51, the total draft ratio set in the draft device 6, the spinning conditions in the air spinning device 7, and the like. You can predict the count. As described above, the count predicting unit 54 predicts the predictive count of the yarn Y generated by the pneumatic spinning device 7 based on the fiber bundle mass (fiber bundle information) acquired by the first acquiring unit 51. (1st number prediction step, 2nd number prediction step) is executed.

The notification determination unit 55 determines whether or not the notification regarding the fiber bundle S or the yarn Y is necessary. Details of the process performed by the notification determination unit 55 will be described later.

The notification control unit 56 displays various information on the display screen 102 to give various notifications to the worker. The notification control unit 56 makes a notification when it is determined that the notification to the worker is necessary. In this way, the notification control unit 56 executes the notification control step of making a notification on the display screen 102.

The operation control unit 57 executes an operation control step of controlling the drafting operation of the drafting device 6 and the spinning operation of the pneumatic spinning device 7.

(Change control of total draft ratio)
First, the change control of the total draft ratio performed by the unit controller 10 will be described. The draft ratio changing unit 53, based on the change in the fiber bundle mass (fiber bundle information) acquired by the fiber bundle sensor 20 and the change in the yarn thickness (thread information) detected by the yarn monitoring device 8, Change the total draft ratio for drafts made in.

Specifically, the draft ratio changing unit 53 transmits a control signal to the draft device 6 so as to change the total draft ratio. The draft device 6 changes the rotation speed of the back bottom roller drive motor based on the control signal, thereby changing the total draft ratio. In this way, the draft ratio changing unit 53 executes the changing step of changing the total draft ratio of the draft performed by the draft device 6.

When the draft ratio changing unit 53 indicates that the fiber bundle mass (fiber bundle information) has increased and the yarn thickness (thread information) has increased, the draft ratio changing unit 53 increases the total draft ratio. As a result, the draft length (extended length) of the fiber bundle S by the draft device 6 becomes long, and the mass per unit length of the yarn Y generated by the pneumatic spinning device 7 becomes small (count of yarn Y). Will grow).

The draft ratio changing unit 53 lowers the total draft ratio when it indicates that the fiber bundle mass (fiber bundle information) has decreased and the yarn thickness (thread information) has decreased. As a result, the draft length of the fiber bundle S by the draft device 6 becomes shorter, and the mass per unit length of the yarn Y generated by the pneumatic spinning device 7 becomes larger (the yarn Y count becomes smaller).

The fiber bundle mass and the yarn thickness are constantly detected by the fiber bundle sensor 20 and the yarn monitoring device 8, respectively. Therefore, the first acquisition unit 51 can always acquire the fiber bundle mass detected by the fiber bundle sensor 20, and the second acquisition unit 52 can always acquire the yarn thickness detected by the yarn monitoring device 8. Then, the draft ratio changing unit 53 can always execute the change control of the total draft ratio based on the acquired change in the mass of the fiber bundle and the change in the yarn thickness.

The draft device 6 may change the total draft ratio during the draft of the fiber bundle S without interrupting the draft operation. Therefore, even if the draft ratio changing unit 53 changes the total draft ratio, the operation control unit 57 performs the draft operation and the air spinning in the draft device 6 from before the total draft ratio is changed to after the total draft ratio is changed. The spinning operation in the device 7 is not interrupted. That is, the operation control unit 57 continues the drafting operation in the draft device 6 and the spinning operation in the pneumatic spinning device 7 before the total draft ratio is changed and after the total draft ratio is changed by the draft ratio changing unit 53. be able to. In this way, the draft ratio changing unit 53 can constantly adjust the yarn count of the yarn Y generated by the spinning unit 2 by changing the total draft ratio.

However, the change control of the total draft ratio is not limited to being constantly executed. For example, the draft ratio changing unit 53 may execute change control of the total draft ratio at a predetermined timing such as when yarn breakage and/or yarn breakage occurs. Further, the operation control unit 57 may suspend the drafting operation in the drafting device 6 and the spinning operation in the pneumatic spinning device 7 when the drafting ratio changing unit 53 changes the total drafting ratio.

The draft ratio changing unit 53 executes the change control of the total draft ratio when at least one of the fiber bundle mass and the yarn thickness changes over a long period of time (when it deviates from a desired value). In addition, the draft ratio changing unit 53 does not execute the change control of the total draft ratio even if at least one of the mass of the fiber bundle and the yarn thickness fluctuates over a long period of time when the fluctuation amount is large. In this case, the operation control unit 57 stops the drafting operation of the drafting device 6 and the spinning operation of the pneumatic spinning device 7. The case where the fiber bundle mass fluctuates over a long period of time is, for example, a case where the fiber bundle mass fluctuates over the length of the fiber bundle S of about 1 m to 2 m. Further, the case where the yarn thickness fluctuates over a long period is a case where the total draft ratio is 200 times, for example, the yarn thickness fluctuates over about 200 m to 400 m in the length of the yarn Y.

Specifically, the draft ratio changing unit 53 determines that the state in which the variation amount (deviation amount) of the fiber bundle mass is not less than the fiber bundle lower limit variation amount and not more than the first fiber bundle variation amount continues for the first fiber bundle length or more. And and/or at least one of the cases where the fluctuation amount (deviation amount) of the yarn thickness is equal to or more than the yarn lower limit variation amount and equal to or less than the first yarn variation amount continues for the first yarn length or more, the total draft ratio described above. Change control is executed. In this case, the draft device 6 drafts the fiber bundle S at the changed total draft ratio, and the air spinning device 7 spins the drafted fiber bundle F to generate the yarn Y. The fiber bundle mass and the yarn thickness that are the references for obtaining the variation amount (deviation amount) of the fiber bundle mass and the yarn thickness are the fibers when the yarn Y having the desired count is obtained when the yarn Y is generated. The bundle mass and the thread thickness may be used, or may be preset values.

The fiber bundle lower limit variation amount and the yarn lower limit variation amount are set in order to prevent the total draft ratio from being changed by a minute variation such as noise. Further, the fiber bundle lower limit variation amount and the yarn lower limit variation amount may be set in order to prevent the total draft ratio from being changed by such a minute change that it is not necessary to change the total draft ratio.

The draft ratio changing unit 53 determines that the fluctuation amount of the fiber bundle mass exceeds the first fiber bundle fluctuation amount for the first fiber bundle length or more, and the fluctuation amount of the yarn thickness changes the first yarn fluctuation amount. In at least one of the cases where the exceeding state continues for the first yarn length or more, the change control of the total draft ratio described above is not executed. In this case, the operation control unit 57 stops the drafting operation of the drafting device 6 and the spinning operation of the pneumatic spinning device 7. That is, the operation control unit 57 determines that the variation amount of the fiber bundle mass exceeds the variation amount of the first fiber bundle for the first fiber bundle length or more and the variation amount of the yarn thickness is the first variation amount of the yarn. In at least one of the cases where the state of exceeding the first yarn length continues for the first yarn length or more, the drafting operation of the drafting device 6 and the spinning operation of the pneumatic spinning device 7 are stopped.

The operation control unit 57 stops the drafting operation of the drafting device 6 and the spinning operation of the pneumatic spinning device 7 when the yarn monitoring device 8 determines that there is a yarn defect (slab, long (long defect), etc.). Then, the spinning unit 2 cuts the yarn Y. After that, the yarn splicing carriage 3 performs the yarn defect removal and the yarn splicing, and the generation of the yarn Y is restarted. Depending on the configuration of the spinning unit 2, the spinning unit 2 may also remove the yarn defect.

The difference between the yarn Y whose count is adjusted by changing the total draft ratio and the yarn Y detected by the yarn monitoring device 8 as a yarn defect (a yarn defect with an abnormal thickness such as slab or long) will be described. To do. The yarn defect detected by the yarn monitoring device 8 here is different from the state of the yarn Y which is dealt with by changing the total draft ratio when the fluctuation occurs over a long period of time, and the yarn thickness is short-term. It is the part that fluctuated.

Specifically, the yarn monitoring device 8 determines that there is a yarn defect when the state in which the variation amount (deviation amount) of the obtained yarn thickness exceeds the second yarn variation amount continues for the second yarn length or more. .. The second yarn variation amount of the yarn thickness and the second yarn length of the length of the yarn Y are determined for each type of yarn defect such as slab and long. The yarn monitoring device 8 detects the yarn defect by comparing the second yarn variation amount and the second yarn length determined for each type of yarn defect with the obtained variation amount of the yarn thickness.

The relationship between the first yarn variation amount and the first yarn length used for the determination of the change of the total draft ratio and the second yarn variation amount and the second yarn length used for the determination of the yarn defect will be described. The second yarn variation amount is larger than the first yarn variation amount. That is, the variation amount of the yarn thickness detected as the yarn defect is larger than the variation amount of the yarn thickness which is the target of the change of the total draft ratio. The second yarn length is shorter than the first yarn length. That is, the length of the varying portion of the yarn thickness detected as a yarn defect is shorter than the length of the varying portion of the yarn thickness which is the target of the change of the total draft ratio.

In this way, a yarn defect in which the variation amount of the yarn thickness is large and the length of the variation portion is short is cut and removed. That is, when such a yarn defect is detected, the draft ratio changing unit 53 does not change the total draft ratio. In addition, the total draft ratio is changed when a small change occurs in the fiber bundle mass or the yarn thickness over a long period of time. Accordingly, the spinning unit 2 can further improve the quality of the yarn Y wound around the package P.

The draft ratio changing unit 53 may use a moving average of the fiber bundle mass acquired by the first acquisition unit 51 for a predetermined time as the fiber bundle mass used for the change control of the total draft ratio. As a result, the draft ratio changing unit 53 can reduce the influence of noise when, for example, the fiber bundle S contains a sudden defect. Further, the draft ratio changing unit 53 uses the average value of the fiber bundle mass of the fiber bundle S supplied to the plurality of spinning units 2 installed in the spinning machine 1 as the fiber bundle mass used for the change control of the total draft ratio. May be used.

Next, using the table of FIG. 4, the draft ratio changing unit 53 controls the total draft ratio based on the fiber bundle mass obtained by the first obtaining unit 51 and the yarn thickness obtained by the second obtaining unit 52. Each pattern example in the case of doing will be described.

As shown in FIG. 4, for example, when the fiber bundle mass increases and the yarn thickness increases like the pattern A1, the draft ratio changing unit 53 increases the total draft ratio. For example, when the fiber bundle mass does not change and the yarn thickness increases as in the pattern A2, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, it can be assumed that the twist of the produced yarn Y is not sufficient. Therefore, the notification control unit 56 may notify the display screen 102 that the twist is not sufficient.

For example, when the fiber bundle mass does not change and the thread thickness does not change as in the pattern A3, the draft ratio changing unit 53 does not change the total draft ratio (maintain the current state). When the fiber bundle mass does not change and the yarn thickness decreases as in the pattern A4, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, it can be assumed that fiber loss has occurred. The fiber loss is the fiber amount of the fiber bundle S supplied to the draft device 6 (the fiber amount upstream of the draft device 6) and the fiber amount of the yarn Y output from the air spinning device 7 (downstream of the air spinning device 7). It is represented by the difference when compared with (fiber amount). For example, the fiber loss may occur due to the fibers falling off without being spun in the pneumatic spinning device 7. As another example, the fiber loss may be caused by the fibers falling off in the draft device 6 (for example, the fibers scattering in the front roller pair 17). As yet another example, fiber loss can occur due to fibers falling out in the combined area of the drafting device 6 and the pneumatic spinning device 7. When the yarn Y is generated by the air spinning device 7, even in a normal state, not all the fibers of the fiber bundle S become the yarn Y, but a certain amount of fibers are dropped without being spun. Dropping of fibers within such an allowable range does not correspond to fiber loss in the present application. For example, when the fiber bundle mass decreases and the yarn thickness decreases as in the pattern A5, the draft ratio changing unit 53 decreases the total draft ratio.

(Modification 1: the yarn monitoring device detects the mass of the yarn.)
In the above, the yarn monitoring device 8 detects the yarn thickness as the yarn information. Instead of this, the yarn monitoring device 8 may detect the mass of the yarn Y (hereinafter referred to as “thread mass”) as the yarn information. As such a yarn monitoring device 8, a capacitance type sensor may be used which allows the yarn Y to pass through in an electric field and detects a temporal change in yarn thickness due to a change in capacitance. In this case, the second acquisition unit 52 acquires the yarn mass from the yarn monitoring device 8 as the yarn information. Further, when the thread monitoring device 8 detects the thread mass, the above-mentioned “thread thickness increases” is defined as “thread mass increases”, and the “thread thickness decreases” as “thread mass decreases”. The draft ratio changing unit 53 can execute change control of the total draft ratio.

Next, using the table of FIG. 5, the draft ratio changing unit 53 controls the total draft ratio based on the fiber bundle mass acquired by the first acquisition unit 51 and the yarn mass acquired by the second acquisition unit 52. Each pattern example in the case will be described.

As shown in FIG. 5, for example, when the fiber bundle mass increases and the yarn mass increases like the pattern B1, the draft ratio changing unit 53 raises the total draft ratio. For example, when the fiber bundle mass does not change and the yarn mass does not change as in the pattern B2, the draft ratio changing unit 53 does not change the total draft ratio (maintain the current state). For example, when the fiber bundle mass does not change and the yarn mass decreases as in the pattern B3, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, it can be assumed that fiber loss occurs in the pneumatic spinning device 7 or the like. For example, when the fiber bundle mass decreases and the yarn mass decreases as in the pattern B4, the draft ratio changing unit 53 decreases the total draft ratio.

In this way, the draft ratio changing unit 53 can appropriately set the total draft ratio even when the yarn mass is used, and can further improve the yarn quality.

(Modification 2: The total draft ratio is changed by using the thread tension.)
As described above, the tension sensor (thread information detection device) 9 measures the tension of the thread Y (hereinafter referred to as “thread tension”) as thread information. The draft ratio changing unit 53 can perform the change control of the total draft ratio using the thread tension (thread information) measured by the tension sensor 9 instead of the thread information detected by the thread monitoring device 8. In this case, the second acquisition unit 52 acquires the thread tension from the tension sensor 9 as the thread information. When the thread tension is used as thread information, the above "thread thickness increases" is read as "thread tension increases" and "thread thickness decreases" is read as "thread tension decreases". As a result, the draft ratio changing unit 53 can execute change control of the total draft ratio.

Next, using the table of FIG. 6, the draft ratio changing unit 53 controls the total draft ratio based on the fiber bundle mass obtained by the first obtaining unit 51 and the yarn tension obtained by the second obtaining unit 52. Each pattern example in the case will be described.

As shown in FIG. 6, for example, when the fiber bundle mass increases and the yarn tension increases as in the pattern C1, the draft ratio changing unit 53 increases the total draft ratio. In this case, for example, it can be assumed that the yarn Y becomes thicker and the yarn tension increases due to the increase in the fiber amount of the fiber bundle S. For example, when the fiber bundle mass increases and the yarn tension does not change as in the pattern C2, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, it can be assumed that the twist of the produced yarn Y is not sufficient. Therefore, the notification control unit 56 may notify the display screen 102 that the twist is not sufficient. For example, when the fiber bundle mass increases and the yarn tension decreases as in the pattern C3, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, it can be assumed that the twist of the produced yarn Y is not sufficient. Therefore, the notification control unit 56 may notify the display screen 102 that the twist is not sufficient.

For example, when the fiber bundle mass does not change and the yarn tension increases as in the pattern C4, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, the notification control unit 56 may notify the increase in the thread tension on the display screen 102. That is, the notification control unit 56 indicates that the fiber bundle information acquired by the first acquisition unit 51 has no change in the fiber bundle mass, and the yarn information acquired by the second acquisition unit 52 indicates that the yarn tension has increased. In the case shown, a tension notification control step of performing notification by the display screen (tension notification device) 102 is executed.

For example, when the fiber bundle mass does not change and the yarn tension does not change as in the pattern C5, the draft ratio changing unit 53 does not change the total draft ratio (maintain the current state). For example, when the fiber bundle mass does not change and the yarn tension decreases as in the pattern C6, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, it can be assumed that the twist of the produced yarn Y is not sufficient. Therefore, the notification control unit 56 may notify the display screen 102 that the twist is not sufficient.

For example, when the fiber bundle mass decreases and the yarn tension increases as in the pattern C7, the draft ratio changing unit 53 does not change the total draft ratio. In this case, for example, the notification control unit 56 may notify the increase in the thread tension on the display screen 102. That is, the notification control unit 56 indicates that the fiber bundle information acquired by the first acquisition unit 51 indicates that the fiber bundle mass has decreased, and the thread information acquired by the second acquisition unit 52 indicates that the thread tension has increased. In the case of indicating, a tension notification control step of performing notification by the display screen (tension notification device) 102 is executed. For example, when the fiber bundle mass decreases and the yarn tension does not change as in the pattern C8, the draft ratio changing unit 53 does not change the total draft ratio. For example, when the fiber bundle mass decreases and the yarn tension decreases as in the pattern C9, the draft ratio changing unit 53 decreases the total draft ratio. In this case, for example, it can be assumed that the yarn Y is thinned due to the decrease in the fiber amount of the fiber bundle S, and the yarn tension is decreased.

In this way, the draft ratio changing unit 53 can appropriately set the total draft ratio even when the yarn tension is used, and can further improve the yarn quality.

(Modification 3: Fiber bundle information is received from the information tag.)
The first acquisition unit 51 is not limited to acquiring the fiber bundle information (fiber bundle mass) from the fiber bundle sensor 20. For example, as shown in FIG. 2, the spinning unit 2 may be provided with a receiving device (fiber bundle information receiving device) 30 that receives the fiber bundle information from the information tag Ka provided on the can K. The information tag Ka may be embedded in the can K or may be externally attached to the outer surface of the can K or the like. The information tag Ka may be embedded in the bottom of the can K, for example. The receiving device 30 receives the fiber bundle information from the information tag Ka by a contact type or a non-contact type. The first acquisition unit 51 may acquire the fiber bundle information received by the receiving device 30 instead of the fiber bundle sensor 20.

In this case, the draft ratio changing unit 53 can execute the change control of the total draft ratio using the fiber bundle information received by the receiving device 30. When the reception result of the reception device 30 is used, the draft ratio changing unit 53 executes change control of the total draft ratio when the can K is exchanged. The exchange of the can K means, for example, the can K in which the contained fiber bundle S is completely consumed by the spinning unit 2 is replaced with another can K (for example, the can K in a state in which the fiber bundle S is fully accommodated). Is said to be done. The draft ratio changing unit 53 can execute change control of the total draft ratio based on the change in the fiber bundle mass before and after the replacement of the can K. Further, the draft ratio changing unit 53 determines that the replacement of the can K has been performed when the joint of the fiber bundle S or the break of the fiber bundle S is detected by the fiber bundle sensor 20 as the timing of the replacement of the can K. Change control of the total draft ratio may be executed. Alternatively, for example, when the receiving device 30 reads the fiber bundle information from the information tag Ka of the can K, the draft ratio changing unit 53 determines that the can K has been exchanged and changes the total draft ratio. Control may be performed.

The information tag Ka may include information on the raw material (cotton, polyester, etc.) of the fiber bundle S as the fiber bundle information. In this case, the receiving device 30 acquires the information on the raw material of the fiber bundle S from the information tag Ka. Then, in the fiber bundle sensor 20, parameters and the like for detecting the fiber bundle mass may be set (corrected) based on the acquired raw material of the fiber bundle S. Depending on the raw material of the fiber bundle S, for example, the way electricity is passed between the capacitor electrodes of the fiber bundle sensor 20 is different. Therefore, by setting the fiber bundle sensor 20 based on the raw material of the fiber bundle S, the detection accuracy of the fiber bundle mass in the fiber bundle sensor 20 is improved. The draft ratio changing unit 53 may perform change control of the total draft ratio using the detection result (fiber bundle mass) of the fiber bundle sensor 20 set (corrected) in this way. As a result, the draft ratio changing unit 53 can more accurately control the change of the total draft ratio.

In addition to receiving the fiber bundle information from the information tag Ka, the receiving device 30 may receive the fiber bundle information or the like from a controller or the like that controls the drawing machine that generates the fiber bundle S.

(Notification control for fiber bundles or threads)
Next, the notification control regarding the fiber bundle S or the yarn Y performed by the unit controller 10 will be described. First, the notification control regarding the yarn Y will be described. The notification determination unit 55 needs to notify the yarn Y based on the fiber bundle mass (fiber bundle information) acquired by the first acquisition unit 51 and the yarn thickness (thread information) acquired by the second acquisition unit 52. Determine if no. The notification determination unit 55 determines whether or not to notify the occurrence of fiber loss during generation of the yarn Y, as the necessity of notification regarding the yarn Y. In this way, the notification determination unit 55 notifies the notification based on the fiber bundle mass (fiber bundle information) acquired by the first acquisition unit 51 and the thread thickness (thread information) acquired by the second acquisition unit 52. The first determination step of determining necessity is executed.

Specifically, the count predicting unit 54, based on the fiber bundle mass acquired by the first acquiring unit 51, the predicted count of the yarn Y generated when the fiber bundle S is spun by the pneumatic spinning device 7. The first predicting step of predicting is executed.

Next, the notification determination unit 55 is based on the predicted count predicted by the count prediction unit 54 and the acquired count that is the yarn Y count obtained based on the yarn thickness acquired by the second acquisition unit 52. As the first predicting step, it is determined whether or not to notify the occurrence of fiber loss. If the predicted count and the acquired count do not match, the notification determination unit 55 determines that notification of the occurrence of fiber loss is necessary. When the fiber loss occurs, the produced yarn Y becomes thin (mass is small). The notification determination unit 55 can calculate the yarn count (obtained count) of the yarn Y by a known method based on the yarn thickness acquired by the second acquisition unit 52.

When determining whether or not to notify the occurrence of fiber loss, the notification determination unit 55 replaces the predicted count predicted by the count prediction unit 54 with a preset generation for the spinning machine 1 (spinning unit 2). The setting information of the power thread Y (count of the thread Y to be generated) may be used. Even when the set count, which is the count of the yarn Y to be generated set in the spinning machine 1, is used, the notification determination unit 55 can determine whether or not to notify the occurrence of the fiber loss.

When it is determined that the notification of the fiber loss is required, the notification control unit 56 notifies the display screen 102 that the fiber loss has occurred. Thus, when the notification determination unit 55 determines that the notification of the occurrence of the fiber loss is necessary, the notification control unit 56 executes the notification control step of performing the notification on the display screen 102.

When it is determined that the notification of the occurrence of the fiber loss is necessary, the operation control unit 57 stops the draft operation of the draft device 6 and the spinning operation of the pneumatic spinning device 7 as the operation control step. This allows the operator to perform maintenance work on the pneumatic spinning device 7.

Next, the notification control regarding the fiber bundle S will be described. The notification determination unit 55, based on the fiber bundle mass (fiber bundle information) acquired by the first acquisition unit 51 and the setting information of the yarn Y to be generated set in the spinning machine 1 (spinning unit 2), the fiber bundle. The second determination step of determining whether or not the notification regarding S is necessary is executed. The notification determining unit 55 determines whether or not to notify the fiber bundle S of an error in the supply of the fiber bundle S to the spinning machine 1 (spinning unit 2) and whether or not to notify the fiber bundle S. It is determined whether or not it is necessary to notify that the fiber bundle has fallen out of the machine. The supply error is a state in which the can K in which the fiber bundle S generated by the drawing machine is stored is supplied to another spinning machine that is not the assumed spinning machine.

Specifically, the count predicting unit 54, based on the fiber bundle mass acquired by the first acquiring unit 51, the predicted count of the yarn Y generated when the fiber bundle S is spun by the pneumatic spinning device 7. The second predicting step of predicting is executed.

The notification determination unit 55 performs the second determination step based on the predicted count predicted by the count prediction unit 54 and the preset count of the yarn Y to be generated which is preset in the spinning machine 1 as the preset information of the yarn Y. It is determined whether it is necessary to notify the occurrence of a supply error of the fiber bundle S to the spinning machine 1. When the predicted count is thicker than the set count, the notification determination unit 55 determines that it is necessary to notify the occurrence of the supply error of the fiber bundle S (Kens K).

When it is determined that it is necessary to notify the occurrence of the supply error of the fiber bundle S, the notification control unit 56 executes the notification control step of notifying the display screen 102 that the supply error of the fiber bundle S has occurred.

When it is determined that the notification of the occurrence of the supply error of the fiber bundle S is necessary, the operation control unit 57 stops the drafting operation of the drafting device 6 and the spinning operation of the pneumatic spinning device 7. As a result, the worker can perform a confirmation work or the like of the can K supplied to the spinning machine 1 (spinning unit 2). Thus, when it is determined that the notification of the occurrence of the supply error of the fiber bundle S is necessary, the operation control unit 57 stops the draft operation of the draft device 6 and the spinning operation of the pneumatic spinning device 7 as the operation control step. be able to.

When the predicted count is larger than the set count (the yarn Y is thin), the notification determination unit 55 needs to notify that the fiber bundle has slipped off in the kneading machine that generates the fiber bundle S, the second determination step. To judge. In addition, the notification determination unit 55 further determines, before the notification, in which of the drawing steps among the drawing steps that are performed a plurality of times using the drawing machine, the fiber bundles have fallen out. In the present embodiment, as an example, the fiber bundle S generated by repeating the drawing step of bundling eight fiber bundles to generate one fiber bundle three times is supplied to the spinning machine 1. When bundling eight fiber bundles with a kneading machine, the fiber bundles may fall out. The notification determination unit 55 determines such a fiber bundle (fiber bundle to be bundled) falling out. However, the number of fiber bundles bundled in the drawing machine is not limited to eight. Further, the number of times of the drawing process repeated when the fiber bundle S is generated is not limited to three.

The notification determining unit 55 determines whether the fiber bundle has fallen out in any of the drawing steps of the drawing steps performed a plurality of times using the drawing machine, based on the reduction rate of the predicted number (mass) with respect to the set number (mass). Whether it has occurred is further determined as a second determination step. When the reduction rate of the yarn mass is −1.5%, the notification determination unit 55 determines that the fiber bundle has slipped out in the second drawing step among the three drawing steps repeated. In addition, the notification determining unit 55 determines that the fiber bundle has slipped out in the third drawing step among the drawing steps that are repeated three times when the reduction rate of the yarn mass is -12.5%. To do. The notification determination unit 55 determines that the fiber amount of the fiber bundle S in the creel device 40 has decreased when the reduction rate of the yarn mass exceeds -12.5%. For example, the fiber amount of the fiber bundle S may decrease due to the occurrence of a split in the fiber bundle S in the creel device 40, or the like. The notification determination unit 55 can perform the above determination by adding a predetermined margin to the -1.5% and -12.5% used as the reduction rate. The -1.5% and -12.5% used as reduction ratios are values when the drawing step of bundling eight fiber bundles is repeated three times.

When it is determined that it is necessary to notify the occurrence of the fiber bundle dropout in the kneading machine, the notification control unit 56 notifies the display screen 102 that the fiber bundle dropout has occurred in the kneading machine. In addition, when notifying that the fiber bundle has fallen off in the drawing machine, the notification control unit 56 notifies in which drawing process the fiber bundle has fallen out. When it is determined that the fiber amount of the fiber bundle S is reduced by the creel device 40, the notification control unit 56 displays on the display screen 102 that the fiber amount of the fiber bundle S is reduced by the creel device 40. Notify me. As described above, the notification control unit 56 displays the display screen when the notification determination unit 55 determines that it is necessary to notify the fall of the fiber bundle in the drawing process or the decrease of the fiber amount of the fiber bundle S in the creel device 40. The notification control step of performing notification by 102 is executed.

When it is determined that it is necessary to notify the fall of the fiber bundle in the drawing process or the decrease of the fiber amount of the fiber bundle S in the creel device 40, the operation control unit 57 performs the draft operation of the draft device 6 as the operation control step. Also, the spinning operation of the pneumatic spinning device 7 can be stopped. As a result, the worker can perform the confirmation work or the like of the drawing machine or the creel device 40.

When performing the notification control regarding the fiber bundle S or the yarn Y, the first acquisition unit 51 is not limited to acquiring the fiber bundle mass detected by the fiber bundle sensor 20. The first acquisition unit 51 may acquire the fiber bundle mass received by the receiving device 30 described above.

Next, a flow of processing of notification control regarding the fiber bundle S or the yarn Y performed by the unit controller 10 will be described with reference to the flowchart of FIG. 7. The process shown in FIG. 7 is started at the same time when the yarn Y is generated in the spinning machine 1.

As shown in FIG. 7, the notification determining unit 55 determines whether the predicted number predicted by the number predicting unit 54 and the set number set in the spinning machine 1 match (S101). When the counts match (S101: YES), the notification determination unit 55 determines that the thread thickness (acquisition count) acquired by the second acquisition unit 52 and the predicted count predicted by the count prediction unit 54. It is determined whether they match (S102). If the numbers match (S102: YES), the process returns to S101 again, and the above-described process is repeated. The case where the counts match in the determination of S102 is a case where the yarn Y is appropriately generated.

When the numbers do not match in the determination of S102 (S102: NO), the notification determination unit 55 determines that the notification of the fiber loss occurrence is necessary. Thereby, the notification control unit 56 notifies that the fiber loss has occurred (S103). Then, the operation control unit 57 stops the operations of the draft device 6 and the pneumatic spinning device 7 (S104).

When the numbers do not match in the determination of S101 (S101: NO), the notification determination unit 55 determines whether the predicted number is thicker than the set number (S105). When the predicted count is thick (S105: YES), the notification determination unit 55 determines that the notification of the occurrence of the supply error of the fiber bundle S (Kens K) is necessary. As a result, the notification control unit 56 notifies that a supply error of the fiber bundle S (can K) has occurred (S106).

When the predicted count is thin in the determination of S105 (S105: NO), the notification determination unit 55 calculates the reduction ratio of the predicted count (mass) to the set count (mass) (S107). When the reduction rate is −1.5% (S107: −1.5%), the notification determination unit 55 determines that the fiber bundle has fallen out in the second drawing step. As a result, the notification control unit 56 notifies that the fiber bundle has slipped out in the second drawing step (S108). When the reduction rate is -12.5% (S107: -12.5%), the notification determination unit 55 determines that the fiber bundle has slipped out in the third drawing step. As a result, the notification control unit 56 notifies that the fiber bundle has slipped out in the third drawing step (S109). When the reduction rate exceeds -12.5% (S107: more than -12.5%), the notification determination unit 55 determines that the fiber amount of the fiber bundle S in the creel device 40 has decreased. Thereby, the notification control unit 56 notifies that the fiber amount of the fiber bundle S has decreased in the creel device 40 (S110).

Next, a spinning program D for executing the spinning method performed by the spinning machine 1 will be described. As shown in FIG. 8, the spinning program D is stored in the storage unit 58 of the unit controller 10. The storage unit 58 is a non-transitory computer-readable storage medium that stores the spinning program D. The unit controller 10 realizes the above-described spinning method by loading the spinning program D on the processor and executing it. The spinning program D includes a first acquisition module D1, a second acquisition module D2, a change module D3, a motion control module D4, a tension notification control module D5, a first determination module D6, and a first number prediction module D7. And a second determination module D8, a second number prediction module D9, and a notification control module D10.

The processing realized by executing the first acquisition module D1, the second acquisition module D2, and the change module D3 is the same as the above-described processing of the first acquisition step, the second acquisition step, and the change step, respectively. The processing realized by executing the operation control module D4, the tension notification control module D5, the first determination module D6, and the first number prediction module D7 is the operation control step, the tension notification control step, and the first determination step described above. , And the process of the 1st number prediction step, respectively. The processing realized by executing the second determination module D8, the second number prediction module D9, and the notification control module D10 is the same as the above-described processing of the second determination step, the second number prediction step, and the notification control step, respectively. The same is true.

The spinning program D may be provided after being fixedly recorded in a tangible recording medium such as a CD-ROM, a DVD-ROM, or a semiconductor memory. Alternatively, the spinning program D may be provided as a data signal via a communication network.

As described above, according to the spinning method executed by the spinning machine 1, the first acquisition unit 51 acquires the fiber bundle information in the first acquisition step, and the second acquisition unit 52 performs the yarn in the second acquisition step. Get information. Then, the draft ratio changing unit 53 changes the total draft ratio in the changing step. As a result, in this spinning method, the total draft ratio is changed using two pieces of information, that is, fiber bundle information indicating the state of the fiber bundle S before being drafted and yarn information indicating the state of the generated yarn Y, The total draft ratio can be set more appropriately. Therefore, according to this spinning method, the yarn quality can be further improved.

If the fiber bundle information indicates that the fiber bundle mass has increased, and the thread information indicates that the thread thickness has increased or the thread mass has increased, the draft ratio changing unit 53 determines the total draft. Increase the ratio. In the changing step, the draft ratio changing unit 53 indicates that the fiber bundle information indicates that the fiber bundle mass has decreased, and the thread information indicates that the thread thickness has decreased or the thread mass has decreased. Lower the total draft ratio. Accordingly, the draft ratio changing unit 53 can appropriately determine how to change the total draft ratio in the changing step.

When executing the operation control step, the operation control unit 57 performs the draft operation and the air spinning device in the draft device 6 from before the total draft ratio is changed to after the total draft ratio is changed by the draft ratio changing unit 53. The spinning operation in 7 is continued. According to this spinning method, even if the total draft ratio is changed, the yarn Y in the spinning machine 1 can be continuously generated, and the productivity of the spinning machine 1 can be maintained.

The draft ratio changing unit 53, in the changing step, when the variation amount of the fiber bundle information is equal to or more than the fiber bundle lower limit variation amount and equal to or less than the first fiber bundle variation amount continues for the first fiber bundle length or more, and the yarn information. The total draft ratio is changed in at least one of the case where the variation amount of the yarn is equal to or more than the yarn lower limit variation amount and equal to or less than the first yarn variation amount continues for the first yarn length or more. According to this spinning method, based on the fluctuation amount of the fiber bundle information and the fluctuation amount of the yarn information, when the fluctuation amount continues to be the first fiber bundle fluctuation amount or less or the first yarn fluctuation amount or less, The draft ratio changing unit 53 can change the total draft ratio. As a result, by performing the drafting operation with the changed total draft ratio, it is possible to keep the quality difference of the yarn Y generated before and after the change within a certain range.

The operation control unit 57, in the operation control step, when the state in which the variation amount of the fiber bundle information acquired by the first acquisition unit 51 exceeds the first fiber bundle variation amount continues for the first fiber bundle length or more, and In at least one of the case where the fluctuation amount of the yarn information acquired by the second acquisition unit 52 exceeds the first yarn fluctuation amount for at least one of the first yarn lengths, the draft operation and the air spinning device in the draft device 6 are performed. The spinning operation in 7 is stopped. According to this spinning method, the operation control unit 57 can stop the continuous production of the low-quality yarn Y by stopping the drafting operation and the spinning operation when the large variation continues. ..

The yarn monitoring device 8 determines that there is a yarn defect, based on the detected yarn information, when the state where the variation amount of the yarn information exceeds the second yarn variation amount continues for the second yarn length or more. In the operation control step, the operation control unit 57 stops the drafting operation in the drafting device 6 and the spinning operation in the pneumatic spinning device 7 when the yarn monitoring device 8 determines that there is a yarn defect. In this case, the operation control unit 57 can stop the drafting operation and the spinning operation, for example, when a yarn defect having a large variation amount and a short length is detected. As a result, such short yarn defects can be removed while the drafting operation and the spinning operation are stopped.

The notification control unit 56 indicates that the fiber bundle information acquired by the first acquisition unit 51 indicates that there is no change in the fiber bundle mass, and the yarn information acquired by the second acquisition unit 52 indicates that the yarn tension has increased. Or if the fiber bundle information acquired by the first acquisition unit 51 indicates that the fiber bundle mass has decreased and the thread information acquired by the second acquisition unit 52 indicates that the thread tension has increased. In the tension notification control step, the display screen 102 notifies. Thereby, the notification control unit 56 can notify the operator that the tension of the generated yarn Y is abnormal.

In the first determination step, the notification determination unit 55 determines whether notification is necessary based on the fiber bundle information acquired by the first acquisition unit 51 and the yarn information acquired by the second acquisition unit 52. Thereby, the notification determination unit 55 can appropriately determine the necessity of notification.

The count predicting unit 54 predicts the predictive count of the yarn Y generated by the spinning machine 1 based on the fiber bundle information acquired by the first acquiring unit 51 in the first count predicting step. In the first determination step, the notification determination unit 55 determines the fiber loss of the fiber loss based on the predicted count predicted by the count prediction unit 54 and the acquisition count of the yarn Y indicated by the yarn information acquired by the second acquisition unit 52. The necessity of notification of occurrence is determined. Further, the notification determination unit 55 determines that the notification of the occurrence of the fiber loss is necessary when the predicted count and the acquired count do not match in the first determination step. Thereby, when a fiber loss occurs, the occurrence of the fiber loss can be notified.

In the second determination step, the notification determination unit 55 determines whether the notification is necessary based on the fiber bundle information acquired by the first acquisition unit 51 and the setting information of the yarn Y to be generated set in the spinning machine 1. To do. Thereby, the notification determination unit 55 can determine the necessity of notification based on the fiber bundle information and the setting information.

In the second count predicting step, the count predicting unit 54 predicts the predictive count of the yarn Y generated by the spinning machine 1 based on the fiber bundle information acquired by the first acquiring unit 51. In addition, the notification determination unit 55, in the second determination step, based on the predicted count predicted by the count prediction unit 54 and the set count of the yarn Y set in the spinning machine 1 as the setting information of the yarn Y, the fiber Whether or not it is necessary to notify the occurrence of a supply error of the bundle S to the spinning machine 1 and whether or not to notify of the occurrence of the falling of the fiber bundle in the kneading machine are determined. Accordingly, the notification determination unit 55 can appropriately determine whether it is necessary to notify the occurrence of the supply error of the fiber bundle S or whether the notification of the occurrence of the fiber bundle dropout in the kneading machine is necessary.

When the notification determination unit 55 determines in the second determination step that it is necessary to notify that the fiber bundle has fallen out, the notification determination unit 55 performs a plurality of times using the kneading machine based on the reduction rate of the predicted number with respect to the set number. It is further determined in which of the drawing steps the fiber bundle has fallen out. The state (mass) of the generated fiber bundle S differs depending on in which drawing process the fiber bundle has fallen off. For this reason, the notification determination unit 55 can determine in which drawing process the falling of the fiber bundle has occurred by using the reduction ratio of the predicted count with respect to the set count.

In the second determination step, the notification determination unit 55 determines that it is necessary to notify the occurrence of the fiber bundle dropout when the predicted count is larger than the set count, and when the predicted count is smaller than the set count, the notification of the fiber bundle S It is determined that it is necessary to notify the occurrence of a supply error to the spinning machine 1. In this case, the notification determination unit 55 can appropriately determine whether the fiber bundle has slipped out and the fiber bundle S has been incorrectly supplied.

When the notification control unit 56 determines that the notification is necessary by determining whether the notification is necessary, the notification control unit 56 notifies the display screen 102 in the notification control step. Accordingly, the notification control unit 56 can notify the operator that a situation requiring notification has occurred.

In the operation control step, the operation control unit 57 stops the drafting operation in the draft device 6 and the spinning operation in the pneumatic spinning device 7 when it is determined that the notification is necessary in the operation control step. In this case, the operation control unit 57 can prevent the yarn Y from being continuously generated when it is determined that the notification is necessary.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, the notification control unit 56 may notify using a notification device other than the display screen 102. For example, the notification control unit 56 may notify using a notification device such as a display screen or a lamp provided in each spinning unit 2.

The draft ratio changing unit 53 is not limited to changing the total draft ratio by controlling the driving of the back bottom roller drive motor. For example, the back bottom roller 14a, the third bottom roller 15a, the middle bottom roller 16a, and the front bottom roller 17a included in the draft device 6 may be driven independently for each spinning unit 2. In this case, the draft ratio changing unit 53 may change the total draft ratio in the draft device 6 by controlling the rotation speed of the front bottom roller 17a. The draft ratio changing unit 53 may change the total draft ratio in the draft device 6 by controlling the rotation speeds of the back bottom roller 14a and the front bottom roller 17a. By changing the total draft ratio in this manner, the spinning machine 1 can optimize the yarn quality. The draft ratio changing unit 53 may change the total draft ratio by controlling the rotation speed of the drawing roller (friction roller (yarn accumulating roller) or delivery roller) that draws the yarn Y out of the draft device 6.

In the case of the draft device 6 having the above-mentioned configuration, even if the rotation speed of the drive motor that drives the third bottom roller 15a and/or the drive motor that drives the middle bottom roller 16a is changed, and a draft ratio other than the total draft ratio is also changed. Good.

In the spinning unit 2, the respective devices are arranged so that the yarn Y supplied on the upper side is wound up on the lower side in the machine height direction. However, in each device, the yarn Y supplied on the lower side is arranged. It may be arranged to be wound up. In FIG. 1, the spinning machine 1 is illustrated as winding a cheese-shaped package P, but it is also possible to wind a cone-shaped package P.

In the spinning unit 2, the yarn storage device 11 has a function of drawing the yarn Y from the air spinning device 7, but the yarn Y may be drawn from the air spinning device 7 by the delivery roller and the nip roller. When the yarn Y is pulled out from the air spinning device 7 by the delivery roller and the nip roller, a slack tube using a suction air flow and/or a mechanical compensator or the like may be provided instead of the yarn storage device 11.

The tension sensor 9 may be arranged upstream of the yarn monitoring device 8 in the traveling direction of the yarn Y. The unit controller 10 may be provided for each spinning unit 2. In the spinning unit 2, the waxing device 12 may be omitted.

Although the spinning machine 1 performs the total draft ratio change control and the notification control regarding the fiber bundle S or the yarn Y in the above-described embodiment, it may perform only the notification control regarding the fiber bundle S or the yarn Y. .. Further, the spinning machine 1 may perform only one of the notification control regarding the fiber bundle S and the notification control regarding the yarn Y. In this case, the notification method for the notification control executed by the spinning machine 1 and the spinning machine 1 can be represented by the following items.
[Item 1]
A notification method performed by a spinning machine, which drafts a fiber bundle in a draft device, and spins the drafted fiber bundle by a spinning device to generate a yarn,
A first acquisition step of acquiring fiber bundle information indicating the state of the fiber bundle before drafting;
A second acquisition step of acquiring thread information indicating the status of the generated thread;
A first determination step of determining necessity of notification based on the fiber bundle information acquired in the first acquisition step and the yarn information acquired in the second acquisition step;
Including a notification method.
[Item 2]
Further comprising a first count predicting step of predicting a predicted count that is the count of the yarn generated by the spinning device, based on the fiber bundle information acquired in the first acquisition step,
In the first determining step, based on the predicted count predicted in the first count predicting step and an acquisition count that is the yarn count of the yarn indicated by the yarn information acquired in the second obtaining step, the fiber The notification method according to item 1 above, which determines whether notification of the occurrence of a loss is necessary.
[Item 3]
3. The notification method according to item 2, wherein in the first determination step, if the predicted count and the acquired count do not match, it is determined that notification of the occurrence of the fiber loss is necessary.
[Item 4]
A notification method performed by a spinning machine, which drafts a fiber bundle in a draft device, and spins the drafted fiber bundle by a spinning device to generate a yarn,
A first acquisition step of acquiring fiber bundle information indicating the state of the fiber bundle before drafting;
A second determination step of determining necessity of notification based on the fiber bundle information acquired in the first acquisition step and setting information of the yarn to be generated set in the spinning machine;
Including a notification method.
[Item 5]
The method further includes a second determination step of determining necessity of notification based on the fiber bundle information acquired in the first acquisition step and the setting information of the yarn to be generated set in the spinning machine. Item 5. The notification method according to any one of Items 1 to 3.
[Item 6]
Further comprising a second count predicting step of predicting a predicted count that is the count of the yarn generated by the spinning device based on the fiber bundle information acquired in the first acquisition step,
In the second determination step, the fiber is based on the predicted count predicted in the second count prediction step and a set count that is the count of the yarn set in the spinning machine as setting information of the yarn. The above item 4 is used to determine whether it is necessary to notify the occurrence of a supply error of the bundle to the spinning machine, or whether it is necessary to notify the occurrence of the falling of the fiber bundle in the drawing machine that generates the fiber bundle. Alternatively, the notification method according to item 5.
[Item 7]
In the second determination step, when it is determined that it is necessary to notify the occurrence of the dropout of the fiber bundle, the kneading is performed a plurality of times using the kneading machine based on the reduction rate of the predicted number with respect to the set number. 7. The notification method according to item 6 above, further determining which one of the drawing steps in which the fiber bundle has fallen out.
[Item 8]
In the second determination step,
If the predicted count is larger than the set count, it is determined that it is necessary to notify the occurrence of the falling of the fiber bundle,
Item 8. The notification method according to Item 6 or 7, wherein when the predicted count is smaller than the set count, it is determined that it is necessary to notify the occurrence of a supply error of the fiber bundle to the spinning machine.
[Item 9]
The spinning machine further includes an informing device for informing,
9. The notification method according to any one of the above items 1 to 8, further comprising a notification control step of performing notification by the notification device when it is determined that notification is necessary by determining whether the notification is necessary.
[Item 10]
Further comprising an operation control step of controlling a drafting operation in the drafting device and a spinning operation in the spinning device,
In the operation control step, when it is determined that the notification is necessary by the determination of the necessity of the notification, the draft operation in the draft device and the spinning operation in the spinning device are stopped, any one of the above items 1 to 9. Notification method described in paragraph.
[Item 11]
A draft device for drafting fiber bundles,
A fiber bundle information detecting device for detecting fiber bundle information indicating the state of the fiber bundle before draft or / and a fiber bundle information receiving device for receiving the fiber bundle information,
A spinning device for spinning the fiber bundle drafted by the drafting device to generate a yarn;
A yarn information detection device that detects yarn information indicating the state of the yarn generated by the spinning device;
A winding device that winds the yarn generated by the spinning device,
A control unit that executes the notification method according to any one of items 1 to 10 above;
Equipped with
The control unit acquires the fiber bundle information detected by the fiber bundle information detection device in the first acquisition step and/or received by the fiber bundle information reception device, and the yarn in the second acquisition step. A spinning machine that acquires the yarn information detected by an information detection device.
[Item 12]
In a spinning machine for drafting a fiber bundle in a drafting device and spinning the drafted fiber bundle by a spinning device to produce a yarn,
A process of acquiring fiber bundle information indicating the state of the fiber bundle before drafting,
A process of acquiring yarn information indicating the state of the generated yarn,
A spinning program that causes a computer to execute processing for determining necessity of notification based on the acquired fiber bundle information and yarn information.
[Item 13]
In a spinning machine for drafting a fiber bundle in a drafting device and spinning the drafted fiber bundle by a spinning device to produce a yarn,
A process of acquiring fiber bundle information indicating the state of the fiber bundle before drafting,
A spinning program that causes a computer to execute a process of determining necessity of notification based on the acquired fiber bundle information and the setting information of the yarn to be generated set in the spinning machine.

At least some of the embodiments and various modifications described above may be arbitrarily combined.

1... Spinning machine, 6... Draft device, 7... Air spinning device (spinning device), 8... Yarn monitoring device (yarn information detecting device), 9... Tension sensor (yarn information detecting device), 10... Unit controller (control section) ), 13... Winding device, 20... Fiber bundle sensor (fiber bundle information detecting device), 30... Receiving device (fiber bundle information receiving device), 102... Display screen (tension informing device, informing device), F, S... Fiber bundle, Y... yarn.

Claims (18)

A spinning method performed by a spinning machine that drafts a fiber bundle in a drafting device, and spins the drafted fiber bundle by a spinning device to produce a yarn,
A first acquisition step of acquiring fiber bundle information indicating the state of the fiber bundle before drafting;
A second acquisition step of acquiring thread information indicating the status of the generated thread;
A changing step of changing the total draft ratio of the draft performed by the drafting device, based on the fiber bundle information obtained in the first obtaining step and the yarn information obtained in the second obtaining step;
Including a spinning method. In the changing step,
When the fiber bundle information indicates that the mass of the fiber bundle has increased, and the thread information indicates that the thickness of the thread has increased or the mass of the thread has increased, the total draft ratio is set to Raise the
When the fiber bundle information indicates that the mass of the fiber bundle has decreased, and the thread information indicates that the thickness of the thread has decreased or the mass of the thread has decreased, the total draft ratio is The spinning method according to claim 1, wherein the spinning is performed. Further comprising an operation control step of controlling a drafting operation in the drafting device and a spinning operation in the spinning device,
In the operation control step, the draft operation in the draft device and the spinning operation in the spinning device are continued from before the total draft ratio is changed in the changing step to after the total draft ratio is changed in the changing step. The spinning method according to claim 1, wherein the spinning method is performed. In the changing step, when the variation amount of the fiber bundle information is equal to or more than the fiber bundle lower limit variation amount and equal to or less than the first fiber bundle variation amount continues for the first fiber bundle length or more, and the variation amount of the yarn information is The spinning method according to claim 3, wherein the total draft ratio is changed in at least one of a case where a state of being equal to or more than the yarn lower limit variation amount and equal to or less than the first yarn variation amount continues for the first yarn length or more. In the operation control step, when the state in which the variation amount of the fiber bundle information acquired in the first acquisition step exceeds the first fiber bundle variation amount continues for the first fiber bundle length or more, and In at least one of the case where the fluctuation amount of the yarn information acquired in the 2 acquisition step exceeds the first yarn fluctuation amount for at least the first yarn length, the drafting operation and the spinning in the draft device are performed. The spinning method according to claim 4, wherein the spinning operation in the apparatus is stopped. The spinning machine further includes a yarn information detection device that detects the yarn information,
When the yarn information detection device determines, based on the detected yarn information, that the variation amount of the yarn information exceeds the second yarn variation amount for at least the second yarn length, Judging that the thread has a thread defect,
The second yarn variation amount is larger than the first yarn variation amount,
The second yarn length is shorter than the first yarn length,
The spinning method according to claim 4 or 5, wherein, in the operation control step, when the yarn information detection device determines that the yarn defect exists, the drafting operation in the drafting device and the spinning operation in the spinning device are stopped. .. The spinning machine further includes a tension notification device that notifies a fluctuation in the tension of the generated yarn,
The fiber bundle information acquired in the first acquisition step indicates that the mass of the fiber bundle has not changed, and the thread information acquired in the second acquisition step indicates that the tension of the thread has increased. Or if the fiber bundle information acquired in the first acquisition step indicates that the mass of the fiber bundle has decreased, and the thread information acquired in the second acquisition step increases the tension of the thread The spinning method according to any one of claims 1 to 6, further comprising a tension notifying control step of notifying by the tension notifying device when it indicates the fact. The method according to claim 1, further comprising a first determination step of determining necessity of notification based on the fiber bundle information acquired in the first acquisition step and the yarn information acquired in the second acquisition step. Spinning method. Further comprising a first count predicting step of predicting a predicted count that is the count of the yarn generated by the spinning device, based on the fiber bundle information acquired in the first acquisition step,
In the first determining step, based on the predicted count predicted in the first count predicting step and an acquisition count that is the yarn count of the yarn indicated by the yarn information acquired in the second obtaining step, the fiber The spinning method according to claim 8, wherein it is determined whether or not to notify the occurrence of loss. The spinning method according to claim 9, wherein in the first determining step, if the predicted count and the acquired count do not match, it is determined that notification of the occurrence of the fiber loss is necessary. The method further comprises a second determination step of determining necessity of notification based on the fiber bundle information acquired in the first acquisition step and the setting information of the yarn to be generated set in the spinning machine. The spinning method according to any one of 1, 8 to 10. Further comprising a second count predicting step of predicting a predicted count that is the count of the yarn generated by the spinning device based on the fiber bundle information acquired in the first acquisition step,
In the second determination step, the fiber is based on the predicted count predicted in the second count prediction step and a set count that is the count of the yarn set in the spinning machine as setting information of the yarn. 12. It is determined whether or not it is necessary to notify the occurrence of a supply error of the bundle to the spinning machine, or whether or not to notify the occurrence of the drop of the fiber bundle in the drawing machine that generates the fiber bundle. The described spinning method. In the second determination step, when it is determined that it is necessary to notify the occurrence of the dropout of the fiber bundle, the kneading is performed a plurality of times using the kneading machine based on the reduction rate of the predicted number with respect to the set number. The spinning method according to claim 12, further comprising determining in which of the drawing steps the slippage of the fiber bundle has occurred. In the second determination step,
If the predicted count is larger than the set count, it is determined that it is necessary to notify the occurrence of the falling of the fiber bundle,
The spinning method according to claim 12 or 13, wherein when the predicted count is smaller than the set count, it is determined that it is necessary to notify the occurrence of a supply error of the fiber bundle to the spinning machine. The spinning machine further includes an informing device for informing,
The spinning method according to any one of claims 8 to 14, further comprising a notification control step of performing notification by the notification device when it is determined by the determination of necessity of the notification that the notification is necessary. Further comprising an operation control step of controlling a drafting operation in the drafting device and a spinning operation in the spinning device,
The operation control step stops the drafting operation in the drafting device and the spinning operation in the spinning device when it is determined that the notification is necessary by the determination of whether or not the notification is necessary. The spinning method described in. A draft device for drafting fiber bundles,
A fiber bundle information detecting device for detecting fiber bundle information indicating the state of the fiber bundle before drafting or/and a fiber bundle information receiving device for receiving the fiber bundle information,
A spinning device for spinning the fiber bundle drafted by the drafting device to generate a yarn;
A yarn information detection device that detects yarn information indicating the state of the yarn generated by the spinning device;
A winding device that winds the yarn generated by the spinning device,
A control unit that executes the spinning method according to claim 1.
Equipped with
The control unit acquires the fiber bundle information detected by the fiber bundle information detection device in the first acquisition step and/or received by the fiber bundle information reception device, and the yarn in the second acquisition step. A spinning machine that acquires the yarn information detected by an information detection device. In a spinning machine for drafting a fiber bundle in a drafting device and spinning the drafted fiber bundle by a spinning device to produce a yarn,
A process of acquiring fiber bundle information indicating the state of the fiber bundle before drafting,
A process of acquiring yarn information indicating the state of the generated yarn,
A spinning program that causes a computer to execute a process of changing a total draft ratio of a draft performed by the draft device based on the obtained fiber bundle information and the yarn information.

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