EP4786395A1

EP4786395A1 - Textile machine

Info

Publication number: EP4786395A1
Application number: EP26151795.7A
Authority: EP
Inventors: Akihito Imanaka; Shigeki Kitagawa
Original assignee: TMT Machinery Inc
Current assignee: TMT Machinery Inc
Priority date: 2025-01-31
Filing date: 2026-01-14
Publication date: 2026-08-05
Also published as: CN122484970A

Abstract

To suppress the consumption of compressed air in a textile machine equipped with a yarn waste collection device. The winding device (4) is arranged in a plurality in a predetermined direction. The yarn waste collection device (5) includes a yarn waste transfer pipe (28) provided along the arrangement direction of the winding devices (4), a plurality of suction pipes (30) connected to the yarn waste transfer pipe (28), a compressed air switching valve for suction transfer (31) connected to each suction pipe (30) to switch the supply of compressed air for suction transfer, and an auxiliary compressed air switching valve (41) connected to the yarn waste transfer pipe (28) to switch the supply of auxiliary compressed air. The auxiliary compressed air switching valve (41) is switched to a state of supplying auxiliary compressed air when at least one of the compressed air switching valves for suction transfer (31) is in a state of supplying compressed air for suction transfer, and is switched to a state of stopping the supply of auxiliary compressed air when the plurality of compressed air switching valves for suction transfer (31) are in a predetermined switching state, even when at least one of the compressed air switching valves for suction transfer (31) is in a state of supplying compressed air for suction transfer.

Description

BACKGROUND OF THE INVENTION

FIELD OF THE INVENTION

The present invention relates to a textile machine.

DESCRIPTION OF THE BACKGROUND ART

Textile machines such as false-twist texturing machines or air-jet texturing machines are provided with a winding device that winds a yarn fed continuously onto a bobbin to form a package and a yarn waste collection device that collects yarn waste (including fiber debris) generated by the winding device. A plurality of winding devices are arranged in the textile machine, and are arranged in a predetermined direction. In the textile machine, yarn continues to be supplied to the winding device even during the replacement of a package formed by winding yarn onto a bobbin with an empty bobbin onto which no yarn has been wound yet. Therefore, in the textile machine, the yarn waste generated by the winding device during the replacement of the package and the empty bobbin is collected by the yarn waste collection device.
For example, Patent Document 1 discloses a textile machine comprising a winding device (winding device 107) that winds a yarn fed continuously onto a bobbin to form a package and a yarn waste collection device (fiber debris collection device 1) that collects the yarn waste generated by the winding device. A plurality of winding devices are arranged in a predetermined direction along the horizontal direction. In the textile machine of Patent Document 1, the plurality of winding devices arranged in the predetermined direction are also arranged in the vertical direction. In the textile machine of Patent Document 1, the yarn waste collection device includes a yarn waste transfer pipe (fiber debris transfer pipe 11) provided along the arrangement direction of the plurality of winding devices aligned in the predetermined direction and a yarn waste collection unit (fiber debris collection unit 13) connected to one end side of the yarn waste transfer pipe.
In the yarn waste collection device, the yarn waste transfer pipe has a plurality of suction pipes (suction pipes 16) connected at positions corresponding to the plurality of winding devices for sucking yarn waste. Each of the plurality of suction pipes is connected to a compressed air switching valve for suction transfer (solenoid valve 24) that switches between a state of supplying compressed air for suction transfer to the suction pipe to suck the yarn waste generated by the corresponding winding device and transfer the yarn waste to the yarn waste collection unit at one end side of the yarn waste transfer pipe and a state of stopping the supply. On the other end side of the yarn waste transfer pipe, an auxiliary compressed air switching valve (open/close control valve 27) is connected, which switches between a state of supplying auxiliary compressed air to the yarn waste transfer pipe to assist in transferring the yarn waste toward the yarn waste collection unit and a state of stopping the supply.

(Priority Art Documents)

(Patent Documents)

Patent Document 1: Japanese Patent Application Publication No. 2024-41054

(Problems to be Solved)

In the textile machine disclosed in Patent Document 1, the yarn waste generated by the winding device is transferred to the yarn waste collection unit through the yarn waste transfer pipe by the compressed air switching valve for suction transfer of the suction pipe connected to the yarn waste transfer pipe at a position corresponding to the winding device being switched to supply compressed air for suction transfer to the suction pipe. Furthermore, the yarn waste generated by the winding device is transferred to the yarn waste collection unit through the yarn waste transfer pipe by the auxiliary compressed air switching valve provided in the yarn waste transfer pipe being switched to supply auxiliary compressed air as well. That is, in the textile machine disclosed in Patent Document 1, both compressed air for suction transfer and auxiliary compressed air are invariably supplied together to the yarn waste transfer pipe, and the yarn waste generated by the winding device is transferred to the yarn waste collection unit by both the compressed air for suction transfer and the auxiliary compressed air.
However, in the yarn waste transfer pipe extending along the arrangement direction of the plurality of winding devices, a plurality of suction pipes are connected at positions corresponding to each winding device, and compressed air for suction transfer is supplied by switching the compressed air switching valves for suction transfer provided in each of the plurality of suction pipes. Therefore, depending on the state in which at least one of the plurality of compressed air switching valves for suction transfer is switched to supply compressed air for suction transfer to the yarn waste transfer pipe, there may be cases where sufficient compressed air necessary for transferring yarn waste to the yarn waste collection unit through the yarn waste transfer pipe is supplied. In such cases, if auxiliary compressed air is also supplied to the yarn waste transfer pipe for transferring yarn waste, compressed air is supplied excessively beyond what is necessary, leading to an increase in compressed air consumption.

SUMMARY OF THE INVENTION

The present invention has been made in view of the above problems and aims to suppress the consumption of compressed air in the textile machine described in the background art. That is, the present invention aims to suppress the consumption of compressed air in a textile machine equipped with a yarn waste collection device configured to supply compressed air for suction transfer to suction pipes provided at positions corresponding to winding devices to suck yarn waste and to supply auxiliary compressed air to a yarn waste transfer pipe connected to a plurality of suction pipes.

(Means for Solving Problems)

A first aspect of the present invention is a textile machine including:

a winding device that winds a yarn fed continuously onto a bobbin to form a package; and
a yarn waste collection device that collects the yarn waste generated by the winding device, wherein
a plurality of the winding devices are arranged in a predetermined direction,
the yarn waste collection device includes a yarn waste transfer pipe provided along an arrangement direction of the plurality of winding devices, and a yarn waste collection unit connected to one end side of the yarn waste transfer pipe,
the yarn waste transfer pipe at positions corresponding to the plurality of winding devices is connected to a plurality of suction pipes for sucking the yarn waste,
each of the plurality of suction pipes is connected to a compressed air switching valve for suction transfer that switches between a state of supplying compressed air for suction transfer to the suction pipe to suck the yarn waste generated by the corresponding winding device and transfer the yarn waste to the yarn waste collection unit on one end side of the yarn waste transfer pipe and a state of stopping the supply,
the other end side of the yarn waste transfer pipe is connected to an auxiliary compressed air switching valve that switches between a state of supplying auxiliary compressed air to the yarn waste transfer pipe to assist in transferring the yarn waste toward the yarn waste collection unit and a state of stopping the supply,
the auxiliary compressed air switching valve of the yarn waste transfer pipe is switched to a state of supplying the auxiliary compressed air when at least one of the plurality of compressed air switching valves for suction transfer is switched to a state of supplying the compressed air for suction transfer, and
even when at least one of the plurality of compressed air switching valves for suction transfer is switched to a state of supplying the compressed air for suction transfer, the auxiliary compressed air switching valve of the yarn waste transfer pipe is switched to a state of stopping the supply of the auxiliary compressed air when the plurality of compressed air switching valves for suction transfer are in a predetermined switching state.

In the above-described first aspect of the textile machine, the yarn waste transfer pipe extending along the arrangement direction of the plurality of winding devices has a plurality of suction pipes connected at positions corresponding to each winding device, and compressed air for suction transfer is supplied by switching the compressed air switching valves for suction transfer connected to each of the plurality of suction pipes. Therefore, depending on the state in which at least one of the plurality of compressed air switching valves for suction transfer is switched to supply compressed air for suction transfer to the yarn waste transfer pipe, there may be cases where sufficient compressed air necessary for transferring yarn waste to the yarn waste collection unit through the yarn waste transfer pipe is supplied. In such cases, if auxiliary compressed air is also supplied to the yarn waste transfer pipe for transferring yarn waste, compressed air is supplied excessively beyond what is necessary, leading to an increase in compressed air consumption. However, according to the above-described first aspect of the textile machine, even when at least one of the plurality of compressed air switching valves for suction transfer is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve is switched to a state of stopping the supply of the auxiliary compressed air when the plurality of compressed air switching valves for suction transfer are in a predetermined switching state. Therefore, when the plurality of compressed air switching valves for suction transfer are in the predetermined switching state and sufficient compressed air necessary for transferring yarn waste to the yarn waste collection unit through the yarn waste transfer pipe is supplied by the compressed air for suction transfer alone, the supply of auxiliary compressed air can be stopped. As a result, it is possible to suppress the unnecessarily excessive supply of compressed air, thereby suppressing the consumption of compressed air.
As described above, according to the above-described first aspect of the textile machine, in a textile machine equipped with a yarn waste collection device configured to supply compressed air for suction transfer to suction pipes provided at positions corresponding to winding devices to suck yarn waste and to supply auxiliary compressed air to a yarn waste transfer pipe connected to a plurality of suction pipes, the consumption of compressed air can be suppressed.
A second aspect of the present invention is the textile machine in the above-described first aspect, wherein
it is preferable that a case where the plurality of compressed air switching valves for suction transfer are in the predetermined switching state is when a predetermined number or more of the plurality of compressed air switching valves for suction transfer are simultaneously switched to a state of supplying the compressed air for suction transfer, and in this case, the auxiliary compressed air switching valve is switched to a state of stopping the supply of the auxiliary compressed air.
According to the above-described second aspect of the textile machine, when a predetermined number or more of the plurality of compressed air switching valves for suction transfer are simultaneously switched to a state of supplying compressed air for suction transfer, the supply of auxiliary compressed air can be stopped. Therefore, when a predetermined number or more of the plurality of compressed air switching valves for suction transfer simultaneously supply compressed air for suction transfer, thereby sufficiently supplying the compressed air necessary for transferring yarn waste, the supply of auxiliary compressed air to the yarn waste transfer pipe can be stopped, and the excessive supply of compressed air for transferring yarn waste can be suppressed, thereby suppressing the consumption of compressed air.
A third aspect of the present invention is the textile machine in the above-described first aspect, wherein
it is preferable that a case where the plurality of compressed air switching valves for suction transfer are in the predetermined switching state is when the compressed air switching valve for suction transfer connected to the suction pipe within a predetermined distance range from the yarn waste collection unit among the plurality of compressed air switching valves for suction transfer is switched to a state of supplying the compressed air for suction transfer, and in this case, the auxiliary compressed air switching valve is switched to a state of stopping the supply of the auxiliary compressed air.
According to the above-described third aspect of the textile machine, when, among the plurality of compressed air switching valves for suction transfer, the compressed air switching valve for suction transfer connected to the suction pipe within a predetermined distance range from the yarn waste collection unit is switched to a state of supplying compressed air for suction transfer, the supply of auxiliary compressed air can be stopped. Therefore, when compressed air for suction transfer is supplied from the compressed air switching valve for suction transfer connected to the suction pipe provided at a position close to the yarn waste collection unit within a predetermined distance range from the yarn waste collection unit, and the compressed air for suction transfer alone can sufficiently transfer yarn waste to the yarn waste collection unit, the supply of auxiliary compressed air to the yarn waste transfer pipe can be stopped, and the excessive supply of compressed air for transferring yarn waste can be suppressed, thereby suppressing the consumption of compressed air.
A fourth aspect of the present invention is the textile machine in the above-described first aspect, wherein
it is preferable that a case where the plurality of compressed air switching valves for suction transfer are in the predetermined switching state is when a predetermined number or more of the plurality of compressed air switching valves for suction transfer are simultaneously switched to a state of supplying the compressed air for suction transfer, or when the compressed air switching valve for suction transfer connected to the suction pipe within a predetermined distance range from the yarn waste collection unit among the plurality of compressed air switching valves for suction transfer is switched to a state of supplying the compressed air for suction transfer, and in either or both of these cases, the auxiliary compressed air switching valve is switched to a state of stopping the supply of the auxiliary compressed air.
According to the above-described fourth aspect of the textile machine, when a predetermined number or more of the plurality of compressed air switching valves for suction transfer simultaneously supply compressed air for suction transfer and the compressed air necessary for transferring yarn waste is sufficiently supplied, the supply of auxiliary compressed air to the yarn waste transfer pipe can be stopped, and the excessive supply of compressed air for transferring yarn waste can be suppressed, thereby suppressing the consumption of compressed air. Furthermore, according to the above-described fourth aspect of the textile machine, when compressed air for suction transfer is supplied from the compressed air switching valve for suction transfer connected to the suction pipe provided at a position close to the yarn waste collection unit within a predetermined distance range and yarn waste can be sufficiently transferred to the yarn waste collection unit by only the compressed air for suction transfer, the supply of auxiliary compressed air to the yarn waste transfer pipe can be stopped, and the excessive supply of compressed air for transferring yarn waste can be suppressed, thereby suppressing the consumption of compressed air.
A fifth aspect of the present invention is the textile machine in the above-described second aspect, wherein
it is preferable that the auxiliary compressed air switching valve is configured to be capable of adjusting the supply amount of the auxiliary compressed air, and adjusts the supply amount of the auxiliary compressed air based on the number of the compressed air switching valves for suction transfer simultaneously switched to a state of supplying the compressed air for suction transfer.
According to the above-described fifth aspect of the textile machine, the auxiliary compressed air switching valve is configured to be capable of adjusting the supply amount of auxiliary compressed air, and when a plurality of compressed air switching valves for suction transfer are simultaneously switched to a state of supplying compressed air for suction transfer, can perform adjustment of the supply amount of auxiliary compressed air according to the number of compressed air switching valves for suction transfer that are simultaneously switched to a state of supplying compressed air for suction transfer. Therefore, it is possible to adjust the supply amount of auxiliary compressed air to the yarn waste transfer pipe in accordance with the supply amount of compressed air for suction transfer to the yarn waste transfer pipe, which varies depending on the number of compressed air switching valves for suction transfer switched to a state of supplying compressed air for suction transfer, and to suppress the excessive supply of compressed air for transferring yarn waste, thereby suppressing the consumption of compressed air.
A sixth aspect of the present invention is the textile machine in the above-described third aspect, wherein
it is preferable that the auxiliary compressed air switching valve is configured to be capable of adjusting the supply amount of the auxiliary compressed air, and adjusts the supply amount of the auxiliary compressed air based on the distance from the yarn waste collection unit of the suction pipe connected to the compressed air switching valve for suction transfer switched to a state of supplying the compressed air for suction transfer.
According to the above-described sixth aspect of the textile machine, the auxiliary compressed air switching valve is configured to be capable of adjusting the supply amount of the auxiliary compressed air, and the supply amount of the auxiliary compressed air can be adjusted based on the distance from the yarn waste collection unit of the suction pipe connected to the compressed air switching valve for suction transfer switched to a state of supplying the compressed air for suction transfer. Therefore, it is possible to adjust the supply amount of auxiliary compressed air to the yarn waste transfer pipe, in accordance with the transfer capability of yarn waste to the yarn waste collection unit by the compressed air for suction transfer, which varies depending on the distance from the yarn waste collection unit of the suction pipe connected to the compressed air switching valve for suction transfer switched to a state of supplying compressed air for suction transfer, and to suppress the excessive supply of compressed air for transferring yarn waste, thereby suppressing the consumption of compressed air.
A seventh aspect of the present invention is the textile machine in the above-described fourth aspect, wherein
it is preferable that the auxiliary compressed air switching valve is configured to be capable of adjusting the supply amount of the auxiliary compressed air, and adjusts the supply amount of the auxiliary compressed air based on the number of the compressed air switching valves for suction transfer simultaneously switched to a state of supplying the compressed air for suction transfer, and the distance from the yarn waste collection unit of the suction pipe connected to the compressed air switching valve for suction transfer switched to a state of supplying the compressed air for suction transfer.
According to the above-described seventh aspect of the textile machine, the supply amount of auxiliary compressed air to the yarn waste transfer pipe can be adjusted corresponding to the supply amount of compressed air for suction transfer to the yarn waste transfer pipe that varies according to the number of compressed air switching valves for suction transfer switched to a state of supplying compressed air for suction transfer, and that the excessive supply of compressed air for transferring yarn waste can be suppressed, and the consumption of compressed air can be suppressed. Furthermore, according to the above-described seventh aspect of the textile machine, the supply amount of auxiliary compressed air to the yarn waste transfer pipe can be adjusted corresponding to the transfer capability of yarn waste to the yarn waste collection unit by compressed air for suction transfer that varies according to the distance from the yarn waste collection unit of the suction pipe connected to the compressed air switching valve for suction transfer switched to a state of supplying compressed air for suction transfer, and that the excessive supply of compressed air for transferring yarn waste can be suppressed, and the consumption of compressed air can be suppressed.
The textile machine according to the present invention may be configured solely with the above-described first aspect, or may be configured by arbitrarily combining the above-described first aspect with any of the above-described second to seventh aspects. When combining the above-described first aspect with any of the above-described second to seventh aspects, it is also possible to combine the above-described first aspect with all or part of the above-described second to seventh aspects within a range where consistency can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a textile machine configured as a false-twist texturing machine.
FIG. 2 is a schematic diagram illustrating the textile machine arranged along the path of a yarn.
FIG. 3 is a diagram schematically showing a plurality of winding devices and a yarn waste collection device in the textile machine.
FIG. 4 is a diagram schematically showing a plurality of winding devices and a yarn waste collection device in the textile machine.
FIG. 5 is a diagram showing a suction pipe connected to a yarn waste transfer pipe of the yarn waste collection device and a compressed air switching valve for suction transfer connected to the suction pipe.
FIG. 6 is a diagram showing the state of the suction pipe when the compressed air switching valve for suction transfer is switched to a state of stopping the supply of compressed air.
FIG. 7 is a diagram used to explain the switching modes of the compressed air switching valve for suction transfer and the auxiliary compressed air switching valve of the yarn waste collection device during the doffing operation of the winding device.
FIG. 8 is a diagram used to explain the switching modes of the compressed air switching valve for suction transfer and the auxiliary compressed air switching valve of the yarn waste collection device during the doffing operation of the winding device.
FIG. 9 is a diagram used to explain the switching modes of the compressed air switching valve for suction transfer and the auxiliary compressed air switching valve of the yarn waste collection device during the doffing operation of the winding device.
FIG. 10 is a diagram used to explain the switching modes of the compressed air switching valve for suction transfer and the auxiliary compressed air switching valve of the yarn waste collection device during the doffing operation of the winding device.
FIG. 11 is a diagram used to explain the switching modes of the compressed air switching valve for suction transfer and the auxiliary compressed air switching valve of the yarn waste collection device during the doffing operation of the winding device.
FIG. 12 is a diagram used to explain the switching modes of the compressed air switching valve for suction transfer and the auxiliary compressed air switching valve of the yarn waste collection device during the doffing operation of the winding device.

DESCRIPTIONS OF EMBODIMENTS OF THE INVENTION

Hereinafter, modes for carrying out the present invention will be described with reference to the drawings. The present invention can be widely adopted to various uses as a textile machine, such as a false-twist texturing machine, equipped with a winding device that winds a yarn fed continuously onto a bobbin to form a package and a yarn waste collection device that collects the yarn waste generated by the winding device.

[Overall Configuration of Textile Machine]

FIG. 1 is a schematic diagram of a textile machine 1 configured as a false-twist texturing machine. FIG. 2 is a schematic diagram illustrating the textile machine 1 arranged along the path of the yarn Y. FIG. 3 and FIG. 4 are diagrams schematically showing a plurality of winding devices 4 and a yarn waste collection device 5 in the textile machine 1. In FIG. 3, a part of the plurality of winding devices 4 arranged in a predetermined direction and a part of the yarn waste collection device 5 are omitted, while in FIG. 4, the entirety of the plurality of winding devices 4 arranged in the predetermined direction and the entirety of the yarn waste collection device 5 are shown. In the present embodiment, the textile machine 1 configured as a false-twist texturing machine will be described as an example. Referring to FIGS. 1 to 4, the textile machine 1 is configured to be capable of false-twist texturing yarn Y made of synthetic fibers such as polyester or nylon (polyamide fibers). The yarn Y is, for example, a multifilament yarn composed of a plurality of filaments.
Referring to FIGS. 1 to 4, the textile machine 1 includes a yarn supply unit 2 for supplying a plurality of yarns Y, a false-twist texturing unit 3 for false-twist texturing the plurality of yarns Y supplied from the yarn supply unit 2, a winding unit composed of a plurality of winding devices 4 that wind the plurality of yarns Y, which are processed by the false-twist texturing unit 3 and fed continuously, onto bobbins Bw to form packages Pw, a yarn waste collection device 5 (see FIG. 3 and FIG. 4) that collects the yarn waste generated by the winding unit, a machine management device 6, and a yarn waste collection control device 7. The textile machine 1 operates based on commands from the machine management device 6, false-twist textures the yarn Y supplied from the yarn supply unit 2 using the false-twist texturing unit 3, and winds the yarn Y onto a bobbin Bw mounted on the winding device 4 to form a package Pw. The machine management device 6 is a device that issues commands for the operation of the yarn supply unit 2, the false-twist texturing unit 3, and each winding device 4, and is provided, for example, as a computer equipped with a CPU, memory, or the like. In the textile machine 1, the yarn waste collection device 5 operates based on control commands from the yarn waste collection control device 7 to collect the yarn waste generated by the winding device 4. The yarn waste collection control device 7 is configured to detect the winding device 4 for which yarn waste collection should be performed based on signals received from the machine management device 6 and to control the operation of the yarn waste collection device 5. The yarn waste collection control device 7 is provided, for example, as a computer equipped with a CPU, memory, or the like.
The textile machine 1 includes a main frame 8 and a winding frame 9 arranged with a spacing in the horizontal direction. The main frame 8 and the winding frame 9 are equipped with devices arranged to simultaneously perform false-twist texturing on a plurality of yarns Y traveling in parallel. A group of components through which a single yarn Y passes from the yarn supply unit 2 to the winding device 4 is referred to as a "spindle." In other words, the textile machine 1 has the same number of spindles 10 (see FIG. 2) as the number of winding devices 4. The plurality of spindles 10 are arranged in parallel, and FIG. 2 shows one spindle 10 as an example.

[Yarn Supply Unit]

Referring to FIG. 1 and FIG. 2, the yarn supply unit 2 includes a creel stand 11 that holds a plurality of yarn supply packages Ps and is configured to be capable of simultaneously supplying a plurality of yarns Y to the false-twist texturing unit 3. The creel stand 11 has a plurality of yarn supply package holding units 12 provided corresponding to each of the plurality of spindles 10. In the creel stand 11, the yarn supply package holding units 12 are arranged in parallel across the vertical and horizontal directions. Each yarn supply package holding unit 12 is configured such that two yarn supply packages Ps can be attached and detached, and includes two package mounting portions 13.
Each of the two package mounting portions 13 in each yarn supply package holding unit 12 has a yarn supply package Ps mounted thereon. The yarn Y is unwound from the yarn supply package Ps mounted on one of the two package mounting portions 13 and sent to the false-twist texturing unit 3. The trailing end of the yarn Y in the yarn supply package Ps mounted on one of the two package mounting portions 13 and the leading end of the yarn Y in the yarn supply package Ps mounted on the other of the two package mounting portions 13 are knotted (connected). Therefore, after the yarn supply package Ps mounted on one of the two package mounting portions 13 becomes empty, the yarn Y from the yarn supply package Ps mounted on the other of the two package mounting portions 13 is sent to the false-twist texturing unit 3 without interruption.

[False-Twist Texturing unit]

Referring to FIG. 1 and FIG. 2, the false-twist texturing unit 3 is configured to unwind and process the yarn Y from the yarn supply package Ps of the yarn supply unit 2. The false-twist texturing unit 3 is configured to be arranged with, in order from the upstream side in the yarn traveling direction, a first feed roller 14, a twist-stop guide 15, a first heating device 16, a cooling device 17, a false-twist device 18, a second feed roller 19, a second heating device 20, and a third feed roller 21. These components of the false-twist texturing unit 3 are provided, for example, for each of the plurality of spindles 10.
The first feed roller 14 is configured to unwind the yarn Y from the yarn supply package Ps mounted on the yarn supply unit 2 and send it to the first heating device 16. The transport speed of the yarn Y by the first feed roller 14 is set to be substantially equal to the unwinding speed of the yarn Y from the yarn supply package Ps. The set value of the transport speed of the yarn Y by the first feed roller 14 is pre-stored in the machine management device 6. The twist-stop guide 15 is configured so that the twist imparted to the yarn Y by the false-twist device 18 does not propagate to the upstream side of the twist-stop guide 15 in the yarn traveling direction.
The first heating device 16 is configured to heat the yarn Y sent from the first feed roller 14. The cooling device 17 is configured to cool the yarn Y heated by the first heating device 16. The false-twist device 18 is configured to impart twist to the yarn Y. The false-twist device 18 is configured, for example, as a disc friction-type false-twist device. The second feed roller 19 is configured to send the yarn Y processed by the false-twist device 18 to the second heating device 20. The transport speed of the yarn Y by the second feed roller 19 is set to be faster than the transport speed of the yarn Y by the first feed roller 14. As a result, the yarn Y is drawn between the first feed roller 14 and the second feed roller 19. The set value of the transport speed of the yarn Y by the second feed roller 19 is pre-stored in the machine management device 6.
The second heating device 20 is configured to heat the yarn Y sent from the second feed roller 19. The second heating device 20 extends along the vertical direction. The third feed roller 21 is configured to send the yarn Y heated by the second heating device 20 to the winding device 4. The transport speed of the yarn Y by the third feed roller 21 is set to be slower than the transport speed of the yarn Y by the second feed roller 19. The yarn Y is relaxed between the second feed roller 19 and the third feed roller 21. The set value of the transport speed of the yarn Y by the third feed roller 21 is pre-stored in the machine management device 6.
In the false-twist texturing unit 3 configured as described above, the yarn Y drawn between the first feed roller 14 and the second feed roller 19 is twisted by the false-twist device 18. The twist formed by the false-twist device 18 propagates up to the twist-stop guide 15 but does not propagate to the upstream side of the twist-stop guide 15 in the yarn traveling direction. The yarn Y, which is drawn and twisted, is heated and heat-set by the first heating device 16 and then cooled by the cooling device 17. Downstream of the false-twist device 18, the yarn Y is untwisted, but the wavy false-twisted state of each filament is maintained by the above heat-setting. Furthermore, the yarn Y false-twisted by the false-twist device 18 is heat-set by the second heating device 20 while being relaxed between the second feed roller 19 and the third feed roller 21, and then guided to the downstream side in the yarn traveling direction. Finally, the yarn Y sent from the third feed roller 21 is wound onto a bobbin Bw by the winding device 4. In this way, a package Pw is formed.

[Winding Unit]

Referring to FIGS. 1 to 4, the winding unit has a plurality of winding devices 4, and each winding device 4 is configured to wind the yarn Y fed continuously from the false-twist texturing unit 3 onto a bobbin Bw to form a package Pw. The winding devices 4 are arranged aligned along a predetermined direction, and in the present embodiment, they are arranged along the predetermined direction, which is the column direction along the horizontal direction. Additionally, the winding devices 4 are arranged in a plurality along the predetermined direction (column direction), and the plurality of winding devices 4 arranged in the predetermined direction are arranged over the stage direction along the vertical direction. In the textile machine 1 of the present embodiment, the winding devices 4 are arranged in a configuration of a plurality of columns and a plurality of stages. In FIG. 1, FIG. 3, and FIG. 4, the column direction (predetermined direction) and the stage direction are indicated by double-headed arrows and a circle with a central dot. In the present embodiment, a configuration is illustrated in which the twelve winding devices 4 (12 columns) are arranged in the column direction (predetermined direction) and the five winding devices 4 (5 stages) are arranged in the stage direction. The numbers of columns and stages of the winding devices 4 are not limited to the above example and may be set to various numbers. That is, a configuration may be implemented in which the winding devices 4 are arranged in 2 to 11 columns or 13 or more columns and in 2 to 4 stages or 6 or more stages.
Each of the plurality of winding devices 4 includes a fulcrum guide 22, a traverse device 23, a cradle 24, and a winding roller 25. The fulcrum guide 22 serves as a guide that acts as a fulcrum when the yarn Y is traversed. The traverse device 23 is configured to traverse the yarn Y, for example, by a traverse guide 26 attached to an endless belt reciprocated by a motor. The cradle 24 is configured to rotatably support the bobbin Bw (i.e., rotatably support the package Pw). The winding roller 25 is configured to rotate the package Pw and apply contact pressure to the surface of the package Pw. The winding roller 25 is rotationally driven by a motor (not shown) while in contact with the surface of the package Pw. As a result, the package Pw is driven to rotate by frictional force, and contact pressure is applied to the surface of the package Pw to shape the package Pw. Alternatively, instead of the winding roller 25 being rotationally driven, the package Pw may be directly rotationally driven by a motor.
Each of the plurality of winding devices 4 is provided with an auto-doffer 27 as a configuration for performing a doffing operation to switch from a state of forming a package Pw to a state of winding the yarn Y onto a new bobbin Bw. In each of the plurality of winding devices 4, the doffing operation is performed by the auto-doffer 27, whereby the package Pw formed by winding the yarn Y onto the bobbin Bw is replaced with a new empty bobbin Bw onto which no yarn Y has been wound. In each of the plurality of winding devices 4, the doffing operation is performed each time a predetermined time has elapsed since the yarn Y was wound onto the bobbin Bw and a package Pw having a predetermined length of yarn Y (referred to as a fully-wound package) is formed. The timing at which the doffing operation is performed in the winding device 4 is managed by time (timer) and is controlled by the machine management device 6. A doffing operation start command is sent from the machine management device 6 to the auto-doffer 27 of the winding device 4, and the doffing operation is performed in that winding device 4, starting the winding of the yarn Y. When a further predetermined time elapses from the above command, a doffing operation start command is sent again from the machine management device 6 to the auto-doffer 27 of that winding device 4, and the doffing operation is performed. At the initial timing when the textile machine 1 starts operating, the doffing operation is performed by an operator operating a switch to command the start of the doffing operation for each winding device 4 while the fed yarn Y is being sucked into a suction pipe 30 of the yarn waste collection device 5 described later.
The auto-doffer 27, which performs the doffing operation, is configured to remove the package Pw from the winding device 4 and mount an empty bobbin Bw onto the winding device 4. That is, the auto-doffer 27 is configured to replace the completed package Pw with an empty bobbin Bw in the winding device 4. Additionally, the auto-doffer 27 also includes a cutter (not shown) capable of cutting the yarn Y just before being wound onto the package Pw in the vicinity of the package Pw. When the traveling yarn Y is cut by the cutter, the package Pw that has completed formation is replaced with a new empty bobbin Bw in the winding device 4. In the textile machine 1, even during the doffing operation after the yarn is cut by the cutter, the yarn Y continues to be unwound from the yarn supply package Ps at a speed substantially equal to that during winding onto the bobbin Bw and is supplied to the winding device 4. In the textile machine 1, the yarn Y that is not wound onto the winding device 4 during the doffing operation performed by the auto-doffer 27 is collected as yarn waste by the yarn waste collection device 5, described later.
The auto-doffer 27 includes a stocker 27a. The stocker 27a is configured to temporarily store the package Pw that has been completed and removed from the winding device 4. The package Pw stored in the stocker 27a is collected by an operator. Additionally, a yarn threading device (not shown) is provided, for example, in the vicinity of the winding device 4. The yarn threading device is configured to thread the yarn Y onto an empty bobbin Bw mounted on the winding device 4.
As described above, in each of the plurality of winding devices 4, the doffing operation is performed each time a predetermined time has elapsed since the yarn Y was wound onto the bobbin Bw and a package Pw having a predetermined length of yarn Y is formed. The doffing operation performed in each winding device 4 is time-managed by the machine management device 6. When a predetermined time has elapsed since the yarn Y was wound onto the bobbin Bw in any of the plurality of winding devices 4 and the formation of a package Pw having a predetermined length of yarn Y is completed, the machine management device 6 commands the auto-doffer 27 of that winding device 4 to start the doffing operation. The auto-doffer 27 of the winding device 4 that receives the doffing operation start command starts the doffing operation. Thus, in the textile machine 1, a doffing operation is performed in a winding device 4 among the plurality of winding devices 4, where yarn Y has been wound onto a bobbin Bw and a predetermined time has elapsed to form a package Pw. Therefore, in the textile machine 1, the doffing operation is carried out using a random doffing method, wherein the doffing operation is performed for each winding device 4 whenever the formation of a package Pw is completed in any one of the plurality of winding devices 4.
In the winding device 4 configured as described above, the yarn Y sent from the third feed roller 21 is wound onto the bobbin Bw to form a package Pw. When a predetermined time has elapsed since the yarn Y was wound onto the bobbin Bw and the formation of a package Pw having a predetermined length of yarn Y is completed, the machine management device 6 commands the auto-doffer 27 of the winding device 4 in which the formation of the package Pw is completed to start the doffing operation. The auto-doffer 27 operates based on a command from the machine management device 6, and the doffing operation is performed by the auto-doffer 27 to switch from a state of forming the package Pw to a state of winding the yarn Y onto a new bobbin Bw. During the doffing operation, the yarn Y is cut by the cutter just before being wound onto the package Pw, and the yarn Y sent from the third feed roller 21 is sucked into a suction pipe 30 of the yarn waste collection device 5, described later. The package Pw is then removed from the cradle 24 by the auto-doffer 27, and subsequently, a new empty bobbin Bw is mounted onto the cradle 24 by the auto-doffer 27. Furthermore, the yarn Y sent from the third feed roller 21 and sucked into the suction pipe 30 is threaded onto the new bobbin Bw by the yarn threading device. When the yarn Y is threaded onto the bobbin Bw, the yarn Y is separated between the bobbin Bw and the suction pipe 30. Thus, it becomes possible to start winding the yarn Y onto the new bobbin Bw.

[Yarn Waste Collection Device]

Referring to FIG. 1, FIG. 3, and FIG. 4, the yarn waste collection device 5 is provided as a device for collecting yarn waste (including fiber debris) generated by the winding device 4. As described above, the yarn waste collection device 5 is configured to collect the yarn waste generated as the yarn Y fed continuously to the winding device 4 during the doffing operation. The doffing operation of the winding device 4 is performed each time the formation of a package Pw is completed in the winding device 4. When a predetermined time has elapsed since the yarn Y was wound onto the bobbin Bw in any of the plurality of winding devices 4 and the formation of a package Pw having a predetermined length of yarn Y is completed, the machine management device 6 commands the auto-doffer 27 of the corresponding winding device 4 to start the doffing operation and sends a doffing operation start signal to the yarn waste collection control device 7. When the yarn waste collection control device 7 receives the doffing operation start signal from the machine management device 6, the yarn waste collection control device 7 detects the winding device 4 targeted for yarn waste collection where the doffing operation is started. When the yarn waste collection control device 7 detects the winding device 4 targeted for yarn waste collection, it operates the yarn waste collection device 5 to collect the yarn waste generated by that winding device 4. By operating the yarn waste collection device 5 based on the control of the yarn waste collection control device 7, the yarn waste generated as the yarn Y continuously supplied to the winding device 4 during the doffing operation is collected by the yarn waste collection device 5. When the doffing operation is completed and the winding of the yarn Y onto a new bobbin Bw is resumed, the collection of yarn waste by the yarn waste collection device 5 is stopped. The yarn waste collection device 5 will be described in detail below.
Referring to FIG. 1, FIG. 3, and FIG. 4, the yarn waste collection device 5 includes a plurality of yarn waste transfer pipes 28 and a yarn waste collection unit 29.
Each of the plurality of yarn waste transfer pipes 28 is provided along the arrangement direction of the plurality of winding devices 4 in each stage. That is, the plurality of yarn waste transfer pipes 28 are provided corresponding to each stage of the winding devices 4, which are arranged in a plurality of stages in the vertical direction, being the stage direction, and each yarn waste transfer pipe 28 corresponding to each stage of the winding devices 4 is arranged to extend along the column direction (predetermined direction), which is the direction in which the winding devices 4 are aligned in each stage. In the present embodiment, the winding devices 4 are arranged in five stages, and the yarn waste transfer pipes 28 are provided corresponding to each stage, with five yarn waste transfer pipes 28 extending along the column direction. Each yarn waste transfer pipe 28 corresponding to each stage of the winding devices 4 sucks and transfers yarn waste from the vicinity of each winding device 4 aligned in the column direction in the stage. Each of the plurality of yarn waste transfer pipes 28 is connected to the yarn waste collection unit 29. As described later, the yarn waste transfer pipe 28 is configured as a pipe through which compressed air flows to transfer yarn waste toward one end side connected to the yarn waste collection unit 29. The yarn waste transferred through each yarn waste transfer pipe 28 is sent to the yarn waste collection unit 29 and collected by the yarn waste collection unit 29.
The yarn waste collection unit 29 is connected to one end side of each of the plurality of yarn waste transfer pipes 28, and one or a plurality of yarn waste collection units 29 are provided. In this embodiment, an example is illustrated in which one end side of each of the plurality of yarn waste transfer pipes 28 is connected to a single yarn waste collection unit 29. The yarn waste collection unit 29 is configured as a yarn waste collection container into which compressed air transferring the yarn waste flows from the yarn waste transfer pipe 28. The yarn waste collection unit 29 is provided with an opening (not shown) that opens to the outside, and the opening is provided with a mesh (not shown) that allows the passage of compressed air while restricting the passage of yarn waste. When compressed air transferring the yarn waste flows from the yarn waste transfer pipe 28 into the yarn waste collection unit 29, the compressed air is discharged to the outside through the opening of the yarn waste collection unit 29. On the other hand, the yarn waste that flows into the yarn waste collection unit 29 from the yarn waste transfer pipe 28 along with the compressed air is restricted from flowing out of the yarn waste collection unit 29 by the mesh. Therefore, only the compressed air flowing into the yarn waste collection unit 29 from the yarn waste transfer pipe 28 flows out to the outside, and the yarn waste flowing in with the compressed air is collected in the yarn waste collection unit 29. In this embodiment, an example is illustrated in which the plurality of yarn waste transfer pipes 28 are connected to a single yarn waste collection unit 29, but this is not limiting. A configuration may be implemented in which one end side of each of the plurality of yarn waste transfer pipes 28 is connected to a respective one of a plurality of yarn waste collection units 29. That is, a configuration may be implemented in which a plurality of yarn waste collection units 29 are provided, and each of the plurality of yarn waste collection units 29 is connected to a respective one of the plurality of yarn waste transfer pipes 28.
The configuration related to the yarn waste transfer pipe 28 will be described in further detail. Referring to FIG. 1, FIG. 3, and FIG. 4, the yarn waste transfer pipe 28 is configured as a pipe for sucking the yarn waste generated by the winding device 4 and transferring it to the yarn waste collection unit 29. Each of the plurality of yarn waste transfer pipes 28 is connected to a plurality of suction pipes 30 for sucking yarn waste (the yarn Y fed continuously from the false-twist texturing unit 3 during the doffing operation) at positions corresponding to the plurality of winding devices 4 in each stage. The plurality of suction pipes 30 connected to each yarn waste transfer pipe 28 are provided in alignment along the longitudinal direction of the yarn waste transfer pipe 28. The plurality of suction pipes 30 provided in alignment in each yarn waste transfer pipe 28 are provided at positions corresponding to the plurality of winding devices 4 aligned in the column direction in each stage to which each yarn waste transfer pipe 28 corresponds. Each of the plurality of suction pipes 30 is connected to a compressed air switching valve for suction transfer 31 that switches between a state of supplying compressed air for suction transfer to the suction pipe 30 to suck the yarn waste generated by the corresponding winding device 4 and transfer the yarn waste to the yarn waste collection unit 29 at one end side of the yarn waste transfer pipe 28 and a state of stopping the supply.
The configuration of the plurality of suction pipes 30 connected to each yarn waste transfer pipe 28 will be described in further detail. FIG. 5 and FIG. 6 are diagrams showing the suction pipe 30 connected to the yarn waste transfer pipe 28 and the compressed air switching valve for suction transfer 31 connected to the suction pipe 30. FIG. 5 is a diagram showing the state of the suction pipe 30 when the compressed air switching valve for suction transfer 31 is switched to a state of supplying compressed air for suction transfer. FIG. 6 is a diagram showing the state of the suction pipe 30 when the compressed air switching valve for suction transfer 31 is switched to a state of stopping the supply of compressed air for suction transfer. In FIG. 5 and FIG. 6, the yarn waste transfer pipe 28 and the suction pipe 30 are shown in cross-sectional views. Referring to FIG. 5 and FIG. 6, the suction pipe 30 is provided as a tubular member for sucking yarn waste, has a pipe diameter smaller than that of the yarn waste transfer pipe 28, and is provided to extend with a bend midway. The suction pipe 30 has one end side communicating with the yarn waste transfer pipe 28 and the other end side provided with a suction inlet 30a for sucking yarn waste. The suction inlet 30a of the suction pipe 30 opens toward the outside. The suction inlet 30a of the suction pipe 30 is disposed in a region near the winding device 4. More specifically, the suction inlet 30a is provided to face the region of the yarn Y traversed by the traverse guide 26 of the traverse device 23 with the fulcrum guide 22 as a fulcrum. The end portion on one end side of the suction pipe 30 is connected to the yarn waste transfer pipe 28, and an outlet opening 30b opens at the end portion on one end side of the suction pipe 30. The suction pipe 30 communicates with the interior of the yarn waste transfer pipe 28 at the outlet opening 30b. Inside the suction pipe 30, a suction flow path 30c is formed extending from the suction inlet 30a to the outlet opening 30b. As described later, when compressed air for suction transfer is supplied to the suction pipe 30, yarn waste is sucked from the suction inlet 30a, and the sucked yarn waste moves through the suction flow path 30c and flows into the yarn waste transfer pipe 28 from the outlet opening 30b.
The suction pipe 30 is connected to the yarn waste transfer pipe 28 in a state of being inclined obliquely. The suction pipe 30 is connected to the yarn waste transfer pipe 28 at an angle such that it is obliquely connected to the yarn waste transfer pipe 28 along the direction toward one end side connected to the yarn waste collection unit 29 in the yarn waste transfer pipe 28. Therefore, when compressed air for suction transfer is supplied to the suction pipe 30, the yarn waste sucked from the suction inlet 30a and moved through the suction flow path 30c flows into the yarn waste transfer pipe 28 from the outlet opening 30b in a manner following the flow of compressed air for suction transfer that flows into the yarn waste transfer pipe 28 and flows toward the yarn waste collection unit 29 in the yarn waste transfer pipe 28. The yarn waste that has flowed into the yarn waste transfer pipe 28 is transferred to the yarn waste collection unit 29 by the flow of compressed air flowing in the yarn waste transfer pipe 28.
The suction pipe 30 is also provided with injection nozzle holes 30d and a guide path 30e. The injection nozzle holes 30d are provided as nozzle holes for injecting compressed air for suction transfer into the suction pipe 30 between one end side where the outlet opening 30b is provided and the other end side where the suction inlet 30a is provided. The injection nozzle holes 30d are configured to inject compressed air for suction transfer toward one end side, which is the outlet opening 30b side, in the suction pipe 30. In this embodiment, two injection nozzle holes 30d are provided. Both of the two injection nozzle holes 30d extend from the suction inlet 30a side toward the outlet opening 30b side and from the outer peripheral side toward the inner peripheral side of the suction pipe 30, thereby communicating with the suction flow path 30c. With this configuration, both of the two injection nozzle holes 30d are configured to inject compressed air for suction transfer toward the outlet opening 30b side in the suction pipe 30.
The guide path 30e of the suction pipe 30 is provided as a compressed air flow path extending annularly along the circumferential direction of the suction pipe 30 in the suction pipe 30. The guide path 30e communicates with the injection nozzle holes 30d and also communicates with a cylinder chamber 35 of an opening/closing mechanism 32 described later. Compressed air for suction transfer supplied to the cylinder chamber 35 described later flows into the guide path 30e and further flows into the injection nozzle holes 30d to be injected into the suction flow path 30c.
Referring to FIG. 5 and FIG. 6, the suction pipe 30 is provided with an opening/closing mechanism 32 for opening and closing the suction inlet 30a. The opening/closing mechanism 32 includes a main body portion 33, an opening/closing member 34, a cylinder chamber 35, a piston 36, a spring member 37, and the like. The main body portion 33 is provided as a block-shaped member and is integrally fixed to the suction pipe 30. The main body portion 33 is provided with the cylinder chamber 35, and further, the main body portion 33 swingably supports the opening/closing member 34 and also supports the piston 36 and the spring member 37.
The opening/closing member 34 is provided as a member for opening and closing the suction inlet 30a of the suction pipe 30 and is swingably attached to the main body portion 33. The opening/closing member 34 is provided with a flat lid portion 38a and supported portions 38b extending on both sides of the lid portion 38a while bending relative to the lid portion 38a. As shown in FIG. 5, the lid portion 38a opens the suction inlet 30a by being positioned at a position separated from the suction inlet 30a of the suction pipe 30. As shown in FIG. 6, the lid portion 38a closes the suction inlet 30a by being positioned at a position abutting and blocking the suction inlet 30a. The supported portions 38b are provided integrally with the lid portion 38a and are swingably supported relative to the main body portion 33 via a support shaft 38c. As the supported portions 38b swing around the support shaft 38c relative to the main body portion 33, the lid portion 38a displaces between a position opening the suction inlet 30a and a position closing it.
The cylinder chamber 35 is formed as a cylindrical space inside the main body portion 33 and is configured to be supplied with compressed air. The cylinder chamber 35 communicates with the guide path 30e of the suction pipe 30 via a communication path 35a provided inside the main body portion 33. Therefore, compressed air for suction transfer supplied to the cylinder chamber 35 flows into the guide path 30e and further into the injection nozzle holes 30d. The cylinder chamber 35 is connected, via a compressed air supply pipe 39, to the compressed air switching valve for suction transfer 31 that switches between a state of supplying compressed air for suction transfer to the suction pipe 30 and a state of stopping the supply. The compressed air supply pipe 39 is connected to a compressed air supply source 100 (see FIG. 3) that supplies compressed air. When the compressed air switching valve for suction transfer 31 is switched to a state of supplying compressed air for suction transfer to the suction pipe 30, compressed air for suction transfer is supplied to the cylinder chamber 35. When the compressed air switching valve for suction transfer 31 is switched to a state of stopping the supply of compressed air for suction transfer to the suction pipe 30, the supply of compressed air for suction transfer to the cylinder chamber 35 is stopped.

The piston 36 is provided as a member for swinging the opening/closing member 34 such that the opening/closing member 34 displaces from a position closing the suction inlet 30a to a position opening it. The piston 36 is slidably inserted and disposed in the cylinder chamber 35. The cylinder chamber 35 opens upward, and the piston 36 is inserted into the cylinder chamber 35 from above. The piston 36 is disposed with its upper end portion protruding from the cylinder chamber 35, and the upper end portion of the piston 36 protruding from the cylinder chamber 35 is provided to be capable of abutting the lid portion 38a of the opening/closing member 34. When the compressed air switching valve for suction transfer 31 is switched to a state of stopping the supply of compressed air for suction transfer, as shown in FIG. 6, the piston 36 moves downward in the cylinder chamber 35, and the opening/closing member 34 closes the suction inlet 30a. In this state, when the compressed air switching valve for suction transfer 31 is switched to a state of supplying compressed air for suction transfer and compressed air for suction transfer is supplied to the cylinder chamber 35, the pressure in the cylinder chamber 35 rises, and the piston 36 displaces so as to be pushed upward. When the piston 36 displaces upward, as shown in FIG. 5, the upper end portion of the piston 36 abuts the lid portion 38a of the opening/closing member 34 and pushes up the lid portion 38a, so as to swing the opening/closing member 34 so as to rotate around the support shaft 38c. As a result, the opening/closing member 34 displaces from a position closing the suction inlet 30a to a position opening it.

The spring member 37 is provided as a spring member for swinging the opening/closing member 34 such that the opening/closing member 34 displaces from a position opening the suction inlet 30a to a position closing it. The spring member 37 is disposed in a spring chamber 40 formed in the main body portion 33. The spring chamber 40 opens upward, and the spring member 37 is disposed in the spring chamber 40 with its upper end portion protruding outside from the spring chamber 40 and extending upward. Furthermore, the upper end portion of the spring member 37 is connected to the lid portion 38a of the opening/closing member 34, and the spring member 37 is configured to bias the lid portion 38a upward. The spring chamber 40 and the cylinder chamber 35 are disposed on opposite sides with the support shaft 38c of the opening/closing member 34 interposed therebetween. Therefore, the spring member 37 and the piston 36 are disposed on opposite sides with the support shaft 38c of the opening/closing member 34 interposed therebetween. As a result, the spring member 37 biases the opening/closing member 34 to swing in a direction opposite to the direction in which the piston 36 swings the opening/closing member 34. When the compressed air switching valve for suction transfer 31 is switched to a state of supplying compressed air for suction transfer, as shown in FIG. 5, the piston 36 displaces upward in the cylinder chamber 35 and pushes up the lid portion 38a, and the opening/closing member 34 opens the suction inlet 30a. In this state, when the compressed air switching valve for suction transfer 31 is switched to a state of stopping the supply of compressed air for suction transfer and the supply of compressed air for suction transfer to the cylinder chamber 35 is cut off, the pressure in the cylinder chamber 35 decreases, and the piston 36 displaces downward. When the piston 36 displaces downward, as shown in FIG. 6, the opening/closing member 34 swings due to the biasing force of the spring member 37, and the opening/closing member 34 displaces from a position opening the suction inlet 30a to a position closing it. In the state of FIG. 6, the yarn Y sent to the winding device 4 and traversed by the traverse guide 26 exists directly above the opening/closing member 34. When the opening/closing member 34 is in the state of FIG. 5, the yarn Y is guided between the suction inlet 30a and the opening/closing member 34. The aforementioned cutter is provided to cut the yarn Y between the suction inlet 30a and the traverse guide 26. The cutter is connected to the opening/closing member 34 and configured to operate in conjunction with the opening/closing member 34. The cutter does not contact the yarn Y traversed by the traverse guide 26 when the opening/closing member 34 is in the state of FIG. 6, but contacts the yarn Y and cuts the yarn Y when the opening/closing member 34 is in the state of FIG. 5. In the state of FIG. 5, the yarn Y sent to the winding device 4 and traversed by the traverse guide 26 is positioned between the suction inlet 30a and the opening/closing member 34. Therefore, when cut by the cutter, the yarn Y on the false-twist texturing unit 3 side is sucked into the suction inlet 30a, and the yarn Y on the winding device 4 side is wound onto the package Pw. For details, refer to Japanese Patent Application Publication No. 2000-211815 .
In the suction pipe 30, when the compressed air switching valve for suction transfer 31 is switched to a state of stopping the supply of compressed air for suction transfer, compressed air for suction transfer is not supplied to the cylinder chamber 35, and as shown in FIG. 6, the opening/closing member 34 closes the suction inlet 30a due to the biasing force of the spring member 37. In this state, the suction pipe 30 does not perform the suction operation for yarn waste. On the other hand, when the compressed air switching valve for suction transfer 31 is switched to a state of supplying compressed air for suction transfer, compressed air for suction transfer is supplied to the cylinder chamber 35, and as shown in FIG. 5, the piston 36 displaces upward and pushes up the opening/closing member 34, and the opening/closing member 34 opens the suction inlet 30a. Furthermore, in the state where compressed air for suction transfer is supplied to the cylinder chamber 35, the compressed air for suction transfer flows into the injection nozzle holes 30d and is injected from the injection nozzle holes 30d into the suction flow path 30c of the suction pipe 30. The compressed air for suction transfer injected into the suction flow path 30c is injected toward the outlet opening 30b side. As a result, by the compressed air for suction transfer injected into the suction pipe 30 from the injection nozzle holes 30d, an airflow that sends yarn waste toward the yarn waste transfer pipe 28 side is generated in the suction pipe 30, and yarn waste is sucked from the suction inlet 30a.
Each of the compressed air switching valves for suction transfer 31 connected to the plurality of suction pipes 30 is provided, for example, as a solenoid valve and is connected to the suction pipe 30 via a compressed air supply pipe 39. As described above, the compressed air switching valve for suction transfer 31 is provided as a switching valve that switches between a state of supplying compressed air for suction transfer to the suction pipe 30 to suck the yarn waste generated by the corresponding winding device 4 and transfer the yarn waste to the yarn waste collection unit 29 at one end side of the yarn waste transfer pipe 28 and a state of stopping the supply. The compressed air switching valve for suction transfer 31 is electrically connected to the yarn waste collection control device 7 and operates under the control of the yarn waste collection control device 7. That is, the compressed air switching valve for suction transfer 31 is switched between a state of supplying compressed air for suction transfer to the suction pipe 30 and a state of stopping the supply based on control commands from the yarn waste collection control device 7. Each of the plurality of compressed air switching valves for suction transfer 31 is switched to a state of supplying compressed air for suction transfer based on control commands from the yarn waste collection control device 7 when the corresponding winding device 4 is performing a doffing operation.
When a predetermined time has elapsed since the yarn Y was wound onto the bobbin Bw in any of the plurality of winding devices 4 and the formation of a package Pw having a predetermined length of yarn Y is completed, the machine management device 6 commands the auto-doffer 27 of the corresponding winding device 4 to start the doffing operation and sends a doffing operation start signal to the yarn waste collection control device 7. When the yarn waste collection control device 7 receives the doffing operation start signal from the machine management device 6, it detects the winding device 4 targeted for yarn waste collection where the doffing operation is started. Upon detecting the winding device 4 targeted for yarn waste collection, the yarn waste collection control device 7 sends a control command to the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 corresponding to that winding device 4, controlling the compressed air switching valve for suction transfer 31 to switch to a state of supplying compressed air for suction transfer to the suction pipe 30. By switching the compressed air switching valve for suction transfer 31 under the control of the yarn waste collection control device 7, compressed air for suction transfer is supplied to the suction pipe 30 corresponding to the winding device 4 performing the doffing operation, and the yarn waste generated by the winding device 4 performing the doffing operation is sucked from the suction pipe 30 corresponding to that winding device 4. At this step, the yarn Y fed continuously from the false-twist texturing unit 3 is sucked by the suction pipe 30. Subsequently, when the yarn Y fed continuously from the false-twist texturing unit 3 and sucked by the suction pipe 30 is threaded onto a new bobbin Bw by the yarn threading device, the yarn Y is separated between the bobbin Bw and the suction pipe 30. As a result, the yarn Y fed continuously from the false-twist texturing unit 3 and sucked by the suction pipe 30 becomes yarn waste, is transferred from the suction pipe 30 through the yarn waste transfer pipe 28, and is collected by the yarn waste collection unit 29.
When the doffing operation in the winding device 4 performing the doffing operation is completed, the yarn waste collection control device 7 receives a doffing operation end signal from the machine management device 6. Upon receiving the doffing operation end signal, the yarn waste collection control device 7 sends a control command to the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 corresponding to that winding device 4, controlling the compressed air switching valve for suction transfer 31 to switch to a state of stopping the supply of compressed air for suction transfer to the suction pipe 30. By switching the compressed air switching valve for suction transfer 31 under the control of the yarn waste collection control device 7, the supply of compressed air for suction transfer to the suction pipe 30 corresponding to the winding device 4 that has completed the doffing operation is stopped. In the winding device 4 that has completed the doffing operation, the winding of the yarn Y onto a new bobbin Bw is resumed, and by stopping the supply of compressed air for suction transfer to the corresponding suction pipe 30, the collection of yarn waste is also stopped.
As described above, one end side of each of the plurality of yarn waste transfer pipes 28 is connected to the yarn waste collection unit 29. On the other end side of each of the plurality of yarn waste transfer pipes 28, an auxiliary compressed air switching valve 41 is connected, which switches between a state of supplying auxiliary compressed air to the yarn waste transfer pipe 28 to assist in transferring yarn waste toward the yarn waste collection unit 29 and a state of stopping the supply. The auxiliary compressed air switching valve 41 is connected to the other end side of each yarn waste transfer pipe 28 and is also connected to a compressed air supply source 100 that supplies compressed air via a compressed air supply system 100a. Therefore, the auxiliary compressed air switching valve 41 is configured to be capable of supplying compressed air supplied from the compressed air supply source 100 as auxiliary compressed air to the yarn waste transfer pipe 28 from the other end side of the yarn waste transfer pipe 28 by being switched to a state of supplying auxiliary compressed air. The compressed air supply source 100 is configured as a supply source for supplying compressed air consumed by various devices, including the textile machine 1, installed in the factory where the textile machine 1 is located. The compressed air supply source 100 includes, for example, a compressor and a compressed air storage tank, and generates and delivers compressed air. The compressed air generated by the compressed air supply source 100 is supplied to the auxiliary compressed air switching valve 41 via the compressed air supply system 100a, and when the auxiliary compressed air switching valve 41 is switched to a state of supplying auxiliary compressed air, it is supplied to the yarn waste transfer pipe 28 as auxiliary compressed air.
Each auxiliary compressed air switching valve 41 provided for each of the plurality of yarn waste transfer pipes 28 is provided, for example, as a solenoid valve and is connected to each yarn waste transfer pipe 28 at the other end side opposite to one end side connected to the yarn waste collection unit 29. As described above, the auxiliary compressed air switching valve 41 is provided as a switching valve that switches between a state of supplying auxiliary compressed air to the yarn waste transfer pipe 28 to assist in transferring yarn waste toward the yarn waste collection unit 29 and a state of stopping the supply. The auxiliary compressed air switching valve 41 is electrically connected to the yarn waste collection control device 7 and operates under the control of the yarn waste collection control device 7. That is, the auxiliary compressed air switching valve 41 is switched between a state of supplying auxiliary compressed air to the yarn waste transfer pipe 28 and a state of stopping the supply based on control commands from the yarn waste collection control device 7. The auxiliary compressed air switching valve 41 for the yarn waste transfer pipe 28 in each stage is switched to a state of supplying auxiliary compressed air based on control commands from the yarn waste collection control device 7 when at least one of the plurality of compressed air switching valves for suction transfer 31 connected to the yarn waste transfer pipe 28 in the stage is switched to a state of supplying compressed air for suction transfer. Additionally, the auxiliary compressed air switching valve 41 is configured to be capable of adjusting the supply amount of auxiliary compressed air. That is, the auxiliary compressed air switching valve 41 is also configured as an auxiliary compressed air supply amount switching valve capable of adjusting the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28. When the supply amount of auxiliary compressed air is adjusted, the auxiliary compressed air switching valve 41 is switched to a state of supplying auxiliary compressed air to the yarn waste transfer pipe 28 based on control commands from the yarn waste collection control device 7, and further, the valve opening is switched to change the supply amount of auxiliary compressed air. The auxiliary compressed air switching valve 41 configured as an auxiliary compressed air supply amount switching valve may be configured, for example, to adjust the supply amount of auxiliary compressed air in two or more steps. Alternatively, the auxiliary compressed air switching valve 41 may be configured to adjust the supply amount of auxiliary compressed air continuously rather than stepwise.
When a doffing operation is performed in a winding device 4 arranged in a certain stage and a certain column, under the control of the yarn waste collection control device 7, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 corresponding to that winding device 4 is switched to a state of supplying compressed air for suction transfer to the suction pipe 30. When the yarn waste collection control device 7 controls the compressed air switching valve for suction transfer 31 to switch to a state of supplying compressed air for suction transfer, it sends a control command to the auxiliary compressed air switching valve 41 connected to the yarn waste transfer pipe 28 in the stage corresponding to that compressed air switching valve for suction transfer 31, controlling the auxiliary compressed air switching valve 41 to switch to a state of supplying auxiliary compressed air to the yarn waste transfer pipe 28. By switching the auxiliary compressed air switching valve 41 under the control of the yarn waste collection control device 7, auxiliary compressed air is further supplied through the auxiliary compressed air switching valve 41 to the yarn waste transfer pipe 28 to which compressed air for suction transfer is supplied from the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 performing the doffing operation via the suction pipe 30.
When the doffing operation in the winding device 4 performing the doffing operation is completed, under the control of the yarn waste collection control device 7, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 corresponding to that winding device 4 is switched to a state of stopping the supply of compressed air for suction transfer. When the yarn waste collection control device 7 controls the compressed air switching valve for suction transfer 31 to switch to a state of stopping the supply of compressed air for suction transfer, if all of the compressed air switching valves for suction transfer 31 corresponding to the yarn waste transfer pipe 28 in the stage corresponding to that compressed air switching valve for suction transfer 31 are in a state of stopping the supply of compressed air for suction transfer, the yarn waste collection control device 7 sends a control command to the auxiliary compressed air switching valve 41 connected to the yarn waste transfer pipe 28 in the stage, controlling the auxiliary compressed air switching valve 41 to switch to a state of stopping the supply of auxiliary compressed air to the yarn waste transfer pipe 28. By switching the auxiliary compressed air switching valve 41 under the control of the yarn waste collection control device 7, the supply of auxiliary compressed air to the yarn waste transfer pipe 28 in the stage where all of the plurality of compressed air switching valves for suction transfer 31 corresponding to the plurality of suction pipes 30 connected to that yarn waste transfer pipe 28 have stopped the supply of compressed air for suction transfer is also stopped.

[Compressed Air Supply mode in Yarn Waste Collection Device]

Next, the compressed air supply mode in the yarn waste collection device 5 of the textile machine 1 will be further described. As already described in detail, the yarn waste collection device 5 includes a yarn waste transfer pipe 28 provided along the arrangement direction of the plurality of winding devices 4 in each stage, and the yarn waste transfer pipe 28 is connected to a plurality of suction pipes 30 that suck yarn waste at positions corresponding to the plurality of winding devices 4 in each stage. Furthermore, each of the plurality of suction pipes 30 is connected to a compressed air switching valve for suction transfer 31 that switches between a state of supplying compressed air for suction transfer to the suction pipe 30 to suck the yarn waste generated by the corresponding winding device 4 and transfer it within the yarn waste transfer pipe 28 and a state of stopping the supply. Each of the plurality of compressed air switching valves for suction transfer 31 is switched to a state of supplying compressed air for suction transfer under the control of the yarn waste collection control device 7 when the corresponding winding device 4 is performing a doffing operation. Therefore, when a doffing operation is performed in a certain winding device 4, the compressed air switching valve for suction transfer 31 corresponding to that winding device 4 is switched to a state of supplying compressed air for suction transfer, whereby the yarn waste generated by the winding device 4 performing the doffing operation is sucked from the suction pipe 30 corresponding to that winding device 4, transferred through the yarn waste transfer pipe 28, and collected by the yarn waste collection unit 29.
As already described in detail, in the yarn waste collection device 5, the yarn waste transfer pipe 28 in each stage is connected to an auxiliary compressed air switching valve 41 that switches between a state of supplying auxiliary compressed air to the yarn waste transfer pipe 28 to assist in transferring yarn waste to the yarn waste collection unit 29 and a state of stopping the supply. The auxiliary compressed air switching valve 41 for the yarn waste transfer pipe 28 in each stage is switched to a state of supplying auxiliary compressed air under the control of the yarn waste collection control device 7 when at least one of the plurality of compressed air switching valves for suction transfer 31 in the stage is switched to a state of supplying compressed air for suction transfer. Therefore, when a doffing operation is performed in a certain winding device 4, the compressed air switching valve for suction transfer 31 corresponding to that winding device 4 is switched to a state of supplying compressed air for suction transfer to supply compressed air for suction transfer to the suction pipe 30, and simultaneously, the auxiliary compressed air switching valve 41 for the yarn waste transfer pipe 28 in the stage corresponding to that winding device 4 is switched to a state of supplying auxiliary compressed air to supply auxiliary compressed air to the yarn waste transfer pipe 28, whereby the yarn waste generated by the winding device 4 performing the doffing operation is transferred through the yarn waste transfer pipe 28 and collected by the yarn waste collection unit 29.
As described above, in the yarn waste collection device 5 of the textile machine 1, under the control of the yarn waste collection control device 7, in principle, when at least one of the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in that stage is switched to supply auxiliary compressed air to the yarn waste transfer pipe 28. However, in the textile machine 1 of the present embodiment, to suppress the excessive supply of auxiliary compressed air, the yarn waste collection device 5 is configured to operate, based on the control of the yarn waste collection control device 7, to switch the auxiliary compressed air switching valve 41 in that stage to a state of stopping the supply of auxiliary compressed air in accordance with the switching state of the plurality of compressed air switching valves for suction transfer 31 in that stage, even when at least one of the plurality of compressed air switching valves for suction transfer 31 in that stage is switched to a state of supplying compressed air for suction transfer. That is, in the textile machine 1, the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in each stage is configured to be switched to a state of stopping the supply of auxiliary compressed air when the plurality of compressed air switching valves for suction transfer 31 in that stage are in a predetermined switching state, even when at least one of the plurality of winding devices 4 in that stage is switched to a state of supplying compressed air for suction transfer. Additionally, in the textile machine 1, the auxiliary compressed air switching valve 41 for the yarn waste transfer pipe 28 in each stage is configured to be capable of adjusting the supply amount of auxiliary compressed air, and it is also configured to adjust the supply amount of auxiliary compressed air based on the status of the compressed air switching valve for suction transfer 31 that is switched to a state of supplying compressed air for suction transfer in the stage.
In the textile machine 1 of the present embodiment, under the control of the yarn waste collection control device 7, even when at least one of the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, when the plurality of compressed air switching valves for suction transfer 31 in that stage are in a predetermined switching state, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air. Furthermore, in the textile machine 1 of the present embodiment, based on the control of the yarn waste collection control device 7, when a compressed air switching valve for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the supply amount of auxiliary compressed air may be adjusted based on the status of the compressed air switching valve for suction transfer 31 that is switched to a state of supplying compressed air for suction transfer in the stage. The textile machine 1 of the present embodiment is configured to execute any of the following first to sixth modes as the compressed air supply mode.

(First Mode)

First, the first mode will be described. In the textile machine 1 of the first mode, as described above, under the control of the yarn waste collection control device 7, even when at least one of the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, when the plurality of compressed air switching valves for suction transfer 31 in that stage are in a predetermined switching state, the auxiliary compressed air switching valve 41 is switched to a state of stopping the supply of auxiliary compressed air. In the textile machine 1 of the first mode, the yarn waste collection control device 7 sets a condition where the plurality of compressed air switching valves for suction transfer 31 in a certain stage are in a predetermined switching state as being when a predetermined number or more of the compressed air switching valves for suction transfer 31 in the stage are simultaneously switched to a state of supplying compressed air for suction transfer. In the textile machine 1 of the first mode, under the control of the yarn waste collection control device 7, when a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the stage is switched to a state of stopping the supply of auxiliary compressed air.
In the textile machine 1, the doffing operation is performed for each winding device 4 each time the formation of a package Pw is completed in any of the plurality of winding devices 4. Therefore, there may be cases where the doffing operation is performed simultaneously in a predetermined number or more of the winding devices 4 among the plurality of winding devices 4 arranged in a predetermined direction in a certain stage. Since the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 performing the doffing operation is switched to a state of supplying compressed air for suction transfer, when the doffing operation is performed simultaneously in a predetermined number or more of the winding devices 4 in a certain stage, a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in that stage are simultaneously switched to a state of supplying compressed air for suction transfer. In this case, since a predetermined number or more of the compressed air switching valves for suction transfer 31 simultaneously supply compressed air for suction transfer, compressed air for suction transfer is simultaneously supplied from a predetermined number or more of the suction pipes 30 to the yarn waste transfer pipe 28, and a sufficient amount of compressed air for transferring yarn waste within the yarn waste transfer pipe 28 is supplied to the yarn waste transfer pipe 28 without supplying auxiliary compressed air to the yarn waste transfer pipe 28. Therefore, when a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the stage is switched to a state of stopping the supply of auxiliary compressed air. The condition of the "predetermined number" used to determine when a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer is appropriately set based on conditions such as the pipe diameter or length of the yarn waste transfer pipe 28, or the flow rate or pressure of the supplied compressed air for suction transfer.
Here, an example of the textile machine 1 of the first mode, where the auxiliary compressed air switching valve 41 in a certain stage is switched to a state of stopping the supply of auxiliary compressed air when a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in the stage are simultaneously switched to a state of supplying compressed air for suction transfer, will be further described. FIG. 7 is a diagram used to explain the switching modes of the compressed air switching valves for suction transfer 31 and the auxiliary compressed air switching valve 41 during the doffing operation of a winding device 4. This example illustrates a mode where the auxiliary compressed air switching valve 41 in a certain stage is switched to a state of stopping the supply of auxiliary compressed air when three or more of the plurality of compressed air switching valves for suction transfer 31 in the stage are simultaneously switched to a state of supplying compressed air for suction transfer.
As illustrated in FIG. 7, in the textile machine 1, the winding devices 4 are arranged in 12 columns in the column direction (predetermined direction) and 5 stages in the stage direction. For convenience of explanation, in the textile machine 1, the stage numbers are referred to in ascending order from the bottom upward as the first stage, second stage, third stage, fourth stage, and fifth stage, and the column numbers are referred to in ascending order from one end side of the yarn waste transfer pipe 28 connected to the yarn waste collection unit 29 toward the other end side as the first column, second column, third column, ..., eleventh column, and twelfth column. In FIG. 7, among the plurality of winding devices 4 arranged in 12 columns and 5 stages, the winding devices 4 during the doffing operation are schematically shown surrounded by a dashed frame together with the suction pipe 30 and compressed air switching valve for suction transfer 31 corresponding to the winding device 4.
In the case shown in FIG. 7, first, in the first stage, none of the winding devices 4 arranged in 12 columns are performing the doffing operation. Therefore, all of the plurality of (12) compressed air switching valves for suction transfer 31 in the first stage are switched to a state of stopping the supply of compressed air for suction transfer, and the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in the first stage is switched to a state of stopping the supply of auxiliary compressed air. In the case shown in FIG. 7, in the second stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the ninth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the second stage, only the compressed air switching valve for suction transfer 31 in the ninth column is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the second stage is switched to a state of supplying auxiliary compressed air. In this second stage, the yarn waste generated by the winding device 4 in the ninth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the ninth column and the auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 7, in the third stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in three winding devices 4: the winding device 4 in the sixth column, the winding device 4 in the tenth column, and the winding device 4 in the eleventh column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the third stage, three compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column are switched to a state of supplying compressed air for suction transfer. In this case, since this is a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the third stage is switched to a state of stopping the supply of auxiliary compressed air. In this third stage, the yarn waste generated by the winding devices 4 in the sixth column, the tenth column, and the eleventh column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column, respectively.
In the case shown in FIG. 7, in the fourth stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the fourth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fourth stage, only the compressed air switching valve for suction transfer 31 in the fourth column is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fourth stage is switched to a state of supplying auxiliary compressed air. In this fourth stage, the yarn waste generated by the winding device 4 in the fourth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the fourth column and the auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 7, in the fifth stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in two winding devices 4: the winding device 4 in the third column and the winding device 4 in the eighth column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fifth stage, two compressed air switching valves for suction transfer 31 in the third column and the eighth column are switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fifth stage is switched to a state of supplying auxiliary compressed air. In this fifth stage, the yarn waste generated by the winding devices 4 in the third column and the eighth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the third column and the eighth column, respectively, and the auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.

(Second Mode)

Next, the second mode will be described. In the textile machine 1 of the second mode, as described above, under the control of the yarn waste collection control device 7, even when at least one of the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, when the plurality of compressed air switching valves for suction transfer 31 in that stage are in a predetermined switching state, the auxiliary compressed air switching valve 41 is switched to a state of stopping the supply of auxiliary compressed air. In the textile machine 1 of the second mode, the yarn waste collection control device 7 sets a condition where the plurality of compressed air switching valves for suction transfer 31 in a certain stage are in a predetermined switching state as being when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in the stage is switched to a state of supplying compressed air for suction transfer. Therefore, in the textile machine 1 of the second mode, under the control of the yarn waste collection control device 7, when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the stage is switched to a state of stopping the supply of auxiliary compressed air.
When the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 in a certain stage is switched to a state of supplying compressed air for suction transfer, compressed air for suction transfer is supplied to the suction pipe 30 located close to the yarn waste collection unit 29 within the predetermined distance range, and yarn waste can be sufficiently transferred to the yarn waste collection unit 29 using only the compressed air for suction transfer without supplying auxiliary compressed air to the yarn waste transfer pipe 28. Therefore, when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the stage is switched to a state of stopping the supply of auxiliary compressed air. The condition of the "predetermined distance range" used to determine when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer is appropriately set based on conditions such as the pipe diameter of the yarn waste transfer pipe 28, or the flow rate or pressure of the supplied compressed air for suction transfer.
Here, an example of the textile machine 1 of the second mode is further described, in which, in the case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air. FIG. 8 is a diagram used to explain the switching mode of the compressed air switching valve for suction transfer 31 and the auxiliary compressed air switching valve 41 when the doffing operation of the winding device 4 is performed. In this example, a configuration is illustrated in which, in the case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air. In the example shown in FIG. 8, among the plurality of suction pipes 30 in each stage, the suction pipes 30 corresponding to the winding devices 4 from the first column to the fourth column are arranged within the predetermined distance D range from the yarn waste collection unit 29. Among the plurality of suction pipes 30 in each stage, the suction pipes 30 corresponding to the winding devices 4 from the fifth column to the twelfth column are arranged at positions exceeding the predetermined distance D range from the yarn waste collection unit 29. In FIG. 8, among the plurality of winding devices 4 arranged in 12 columns and 5 stages, the winding devices 4 during the doffing operation are schematically shown surrounded by a dashed frame together with the suction pipe 30 and compressed air switching valve for suction transfer 31 corresponding to the winding device 4.
In the case shown in FIG. 8, first, in the first stage, none of the winding devices 4 arranged in 12 columns are performing the doffing operation, and all of the plurality of (12) compressed air switching valves for suction transfer 31 in the first stage are switched to a state of stopping the supply of compressed air for suction transfer. Therefore, the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in the first stage is switched to a state of stopping the supply of auxiliary compressed air. In the case shown in FIG. 8, in the second stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the ninth column is performing the doffing operation, and among the plurality of compressed air switching valves for suction transfer 31 in the second stage, only the compressed air switching valve for suction transfer 31 in the ninth column is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the ninth column is arranged at a position exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the second stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 at a position exceeding the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the second stage is switched to a state of supplying auxiliary compressed air. In this second stage, the yarn waste generated by the winding device 4 in the ninth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the ninth column and the auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 8, in the third stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in three winding devices 4: the sixth column, the tenth column, and the eleventh column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the third stage, three compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column are switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the sixth column, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the tenth column, and the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the eleventh column are all arranged at positions exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the third stage, the compressed air switching valves for suction transfer 31 connected to the suction pipes 30 at positions exceeding the predetermined distance D range from the yarn waste collection unit 29 are switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the third stage is switched to a state of supplying auxiliary compressed air. In this third stage, the yarn waste generated by the winding devices 4 in the sixth column, the tenth column, and the eleventh column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column, respectively, and the auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 8, in the fourth stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the fourth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fourth stage, only the compressed air switching valve for suction transfer 31 in the fourth column is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the fourth column is arranged within a predetermined distance D range from the yarn waste collection unit 29. That is, in the fourth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fourth stage is switched to a state of stopping the supply of auxiliary compressed air. In this fourth stage, the yarn waste generated by the winding device 4 in the fourth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the fourth column.
In the case shown in FIG. 8, in the fifth stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in the winding device 4 in the third column and the winding device 4 in the eighth column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fifth stage, two compressed air switching valves for suction transfer 31, in the third column and the eighth column, are switched to a state of supplying compressed air for suction transfer. Among the two compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the third column is arranged within the predetermined distance D range from the yarn waste collection unit 29. That is, in the fifth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 in the third column within the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fifth stage is switched to a state of stopping the supply of auxiliary compressed air. In this fifth stage, the yarn waste generated by the winding devices 4 in the third column and the eighth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the third column and the eighth column, respectively.

(Third Mode)

Next, the third mode will be described. In the textile machine 1 of the third mode, as described above, based on the control of the yarn waste collection control device 7, even when at least one of the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, when the plurality of compressed air switching valves for suction transfer 31 in that stage are in a predetermined switching state, the auxiliary compressed air switching valve 41 is switched to a state of stopping the supply of auxiliary compressed air. In the textile machine 1 of the third mode, in the yarn waste collection control device 7, it is set that the plurality of compressed air switching valves for suction transfer 31 in a certain stage are in a predetermined switching state when they are in the switching state described in the first mode and when they are in the switching state described in the second mode. That is, in the textile machine 1 of the third mode, the predetermined switching state is set as when a predetermined number or more of the compressed air switching valves for suction transfer 31 in the stage are simultaneously switched to a state of supplying compressed air for suction transfer, or when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in the stage is switched to a state of supplying compressed air for suction transfer. In the textile machine 1 of the third mode, under the control of the yarn waste collection control device 7, the auxiliary compressed air switching valve 41 in the stage is switched to a state of stopping the supply of auxiliary compressed air in either case or in both cases: when a predetermined number or more of the compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, or when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 in the stage is switched to a state of supplying compressed air for suction transfer.
When a predetermined number or more of the compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, a sufficient amount of compressed air to transfer yarn waste within the yarn waste transfer pipe 28 is supplied to the yarn waste transfer pipe 28 without supplying auxiliary compressed air. Additionally, when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 in a certain stage is switched to a state of supplying compressed air for suction transfer, compressed air for suction transfer is supplied to the suction pipe 30 located close to the yarn waste collection unit 29 within the predetermined distance range, and yarn waste can be sufficiently transferred to the yarn waste collection unit 29 using only the compressed air for suction transfer without supplying auxiliary compressed air to the yarn waste transfer pipe 28. Therefore, in the case where at least one of the following holds: the case where a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, or the case where, among the plurality of compressed air switching valves for suction transfer 31 in a certain stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air. The condition of the "predetermined number" used to determine when a predetermined number or more of the compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer is appropriately set based on conditions such as the pipe diameter or length of the yarn waste transfer pipe 28, or the flow rate or pressure of the supplied compressed air for suction transfer. In addition, the condition of the "predetermined distance range" used to determine when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer is appropriately set based on conditions such as the pipe diameter of the yarn waste transfer pipe 28, or the flow rate or pressure of the supplied compressed air for suction transfer.
Here, an example of the textile machine 1 of the third mode is further described, in which, in the case where either or both of the following hold: the case where a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, or the case where, among the plurality of compressed air switching valves for suction transfer 31 in a certain stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air. FIG. 9 is a diagram used to explain the switching mode of the compressed air switching valve for suction transfer 31 and the auxiliary compressed air switching valve 41 when the doffing operation of the winding device 4 is performed. In this example, a configuration is illustrated in which, in the case where either or both of the following hold: the case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, or the case where, among the plurality of compressed air switching valves for suction transfer 31 in a certain stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air. In the example shown in FIG. 9, among the plurality of suction pipes 30 in each stage, the suction pipes 30 corresponding to the winding devices 4 from the first column to the fourth column are arranged within the predetermined distance D range from the yarn waste collection unit 29, and the suction pipes 30 corresponding to the winding devices 4 from the fifth column to the twelfth column are arranged at positions exceeding the predetermined distance D range from the yarn waste collection unit 29. In FIG. 9, among the plurality of winding devices 4 arranged in 12 columns and 5 stages, the winding devices 4 during the doffing operation are schematically shown surrounded by a dashed frame together with the suction pipe 30 and compressed air switching valve for suction transfer 31 corresponding to the winding device 4.
In the case shown in FIG. 9, first, in the first stage, none of the winding devices 4 arranged in 12 columns are performing the doffing operation, and all of the plurality of (12) compressed air switching valves for suction transfer 31 in the first stage are switched to a state of stopping the supply of compressed air for suction transfer. Therefore, the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in the first stage is switched to a state of stopping the supply of auxiliary compressed air. In the case shown in FIG. 9, in the second stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the ninth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the second stage, only the compressed air switching valve for suction transfer 31 in the ninth column is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the ninth column is arranged at a position exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the second stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 at a position exceeding the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, and furthermore, this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the second stage is switched to a state of supplying auxiliary compressed air. In this second stage, the yarn waste generated by the winding device 4 in the ninth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the ninth column and the auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 9, in the third stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in three winding devices 4: the sixth column, the tenth column, and the eleventh column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the third stage, three compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column are switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the sixth column, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the tenth column, and the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the eleventh column are all arranged at positions exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the third stage, the compressed air switching valves for suction transfer 31 connected to the suction pipes 30 at positions exceeding the predetermined distance D range from the yarn waste collection unit 29 are switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, but this is a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the third stage is switched to a state of stopping the supply of auxiliary compressed air. In this third stage, the yarn waste generated by the winding devices 4 in the sixth column, the tenth column, and the eleventh column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column, respectively.
In the case shown in FIG. 9, in the fourth stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the fourth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fourth stage, only the compressed air switching valve for suction transfer 31 in the fourth column is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the fourth column is arranged within the predetermined distance D range from the yarn waste collection unit 29. That is, in the fourth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, but this is a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fourth stage is switched to a state of stopping the supply of auxiliary compressed air. In this fourth stage, the yarn waste generated by the winding device 4 in the fourth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the fourth column.
In the case shown in FIG. 9, in the fifth stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in two winding devices 4: the third column and the eighth column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fifth stage, two compressed air switching valves for suction transfer 31, in the third column and the eighth column, are switched to a state of supplying compressed air for suction transfer. Among the two compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the third column is arranged within the predetermined distance D range from the yarn waste collection unit 29. That is, in the fifth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 in the third column within the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, but this is a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fifth stage is switched to a state of stopping the supply of auxiliary compressed air. In this fifth stage, the yarn waste generated by the winding devices 4 in the third column and the eighth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the third column and the eighth column, respectively.

(Fourth Mode)

Next, the fourth mode will be described. The textile machine 1 of the fourth mode is configured similarly to the textile machine 1 of the first mode described above, and additionally, when the compressed air switching valve for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, it is configured to adjust the supply amount of auxiliary compressed air based on the number of compressed air switching valves for suction transfer 31 in the stage that are simultaneously switched to a state of supplying compressed air for suction transfer. Specifically, the textile machine 1 of the fourth mode is configured such that, based on the control of the yarn waste collection control device 7, when a predetermined number or more of the compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the stage is configured to be switched to a state of stopping the supply of auxiliary compressed air, similar to the textile machine 1 of the first mode. Furthermore, the textile machine 1 of the fourth mode is configured such that, under the control of the yarn waste collection control device 7, when the compressed air switching valve for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41, which is configured to be capable of adjusting the supply amount of auxiliary compressed air, is controlled to adjust the supply amount of auxiliary compressed air based on the number of compressed air switching valves for suction transfer 31 in the stage that are simultaneously switched to a state of supplying compressed air for suction transfer.
When the number of compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer in a certain stage changes, the supply amount of compressed air for suction transfer to the yarn waste transfer pipe 28 also changes. That is, when the number of compressed air switching valves for suction transfer 31 switched to supply compressed air for suction transfer is large, the amount of compressed air for suction transfer supplied to the yarn waste transfer pipe 28 increases, and when the number of compressed air switching valves for suction transfer 31 switched to supply compressed air for suction transfer is small, the amount of compressed air for suction transfer supplied to the yarn waste transfer pipe 28 decreases. Therefore, depending on the number of compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer, the supply amount of auxiliary compressed air may be excessive or appropriate. On the other hand, the auxiliary compressed air switching valve 41 is configured to be capable of adjusting the supply amount of auxiliary compressed air. In the textile machine 1 of the fourth mode, the auxiliary compressed air switching valve 41 is controlled to change the supply amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41 based on the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer, thereby adjusting the supply amount of auxiliary compressed air. Therefore, in the textile machine 1 of the fourth mode, it is possible to adjust the supply amount of auxiliary compressed air to the yarn waste transfer pipe 28 in accordance with the supply amount of compressed air for suction transfer to the yarn waste transfer pipe 28, which varies depending on the number of compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer. As a result, it is possible to suppress the excessive supply of compressed air for transferring yarn waste, thereby suppressing the consumption of compressed air.
Here, an example of the textile machine 1 of the fourth mode is described, in which the supply amount of auxiliary compressed air is adjusted based on the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer. FIG. 10 is a diagram used to explain the switching mode of the compressed air switching valve for suction transfer 31 and the auxiliary compressed air switching valve 41 when the doffing operation of the winding device 4 is performed. In this example, a configuration is illustrated in which, in the case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air, and furthermore, based on the number of compressed air switching valves for suction transfer 31 that are simultaneously switched to a state of supplying compressed air for suction transfer being one or two, the supply amount of auxiliary compressed air through the auxiliary compressed air switching valve 41 is switched, thereby adjusting the supply amount of auxiliary compressed air. In FIG. 10, among the plurality of winding devices 4 arranged in 12 columns and 5 stages, the winding devices 4 during the doffing operation are schematically shown surrounded by a dashed frame together with the suction pipe 30 and compressed air switching valve for suction transfer 31 corresponding to the winding device 4.
In the case shown in FIG. 10, first, in the first stage, none of the winding devices 4 arranged in 12 columns are performing the doffing operation. Therefore, all of the plurality of (12) compressed air switching valves for suction transfer 31 in the first stage are switched to a state of stopping the supply of compressed air for suction transfer, and the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in the first stage is switched to a state of stopping the supply of auxiliary compressed air. In the case shown in FIG. 10, in the second stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the ninth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the second stage, only the compressed air switching valve for suction transfer 31 in the ninth column is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the second stage is switched to a state of supplying auxiliary compressed air. Furthermore, in this case, the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is one, and compared to the case where the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is two, a smaller amount of compressed air for suction transfer is supplied to the yarn waste transfer pipe 28, so the auxiliary compressed air switching valve 41 is controlled so that the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28 through the auxiliary compressed air switching valve 41 becomes large, and the supply amount of auxiliary compressed air is adjusted to supply a large amount of auxiliary compressed air. In this second stage, the yarn waste generated by the winding device 4 in the ninth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the ninth column and the large amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 10, in the third stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in three winding devices 4: the sixth column, the tenth column, and the eleventh column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the third stage, three compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column are switched to a state of supplying compressed air for suction transfer. In this case, since three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the third stage is switched to a state of stopping the supply of auxiliary compressed air. In this third stage, the yarn waste generated by the winding devices 4 in the sixth column, the tenth column, and the eleventh column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column, respectively.
In the case shown in FIG. 10, in the fourth stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the fourth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fourth stage, only the compressed air switching valve for suction transfer 31 in the fourth column is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fourth stage is switched to a state of supplying auxiliary compressed air. Furthermore, in this case, the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is one, and compared to the case where the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is two, a smaller amount of compressed air for suction transfer is supplied to the yarn waste transfer pipe 28, so the auxiliary compressed air switching valve 41 is controlled so that the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28 through the auxiliary compressed air switching valve 41 becomes large, and the supply amount of auxiliary compressed air is adjusted to supply a large amount of auxiliary compressed air. In this fourth stage, the yarn waste generated by the winding device 4 in the fourth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the fourth column and the large amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 10, in the fifth stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in two winding devices 4: the third column and the eighth column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fifth stage, two compressed air switching valves for suction transfer 31 in the third column and the eighth column are switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in the fifth stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fifth stage is switched to a state of supplying auxiliary compressed air. Furthermore, in this case, the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is two, and compared to the case where the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is one, a larger amount of compressed air for suction transfer is supplied to the yarn waste transfer pipe 28. Therefore, the auxiliary compressed air switching valve 41 is controlled so that the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28 through the auxiliary compressed air switching valve 41 is small, and the supply amount of auxiliary compressed air is adjusted to supply a small amount of auxiliary compressed air. In this fifth stage, the yarn waste generated by the winding devices 4 in the third column and the eighth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the third column and the eighth column, respectively, and the small amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.

(Fifth Mode)

Next, the fifth mode will be described. The textile machine 1 of the fifth mode is configured similarly to the textile machine 1 of the second mode described above, and additionally, when the compressed air switching valve for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, it is configured to adjust the supply amount of auxiliary compressed air based on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the stage that is switched to a state of supplying compressed air for suction transfer. Specifically, the textile machine 1 of the fifth mode is configured such that, under the control of the yarn waste collection control device 7, when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the stage is configured to be switched to a state of stopping the supply of auxiliary compressed air, similar to the textile machine 1 of the second mode. Furthermore, the textile machine 1 of the fifth mode is configured such that, under the control of the yarn waste collection control device 7, when the compressed air switching valve for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41, which is configured to be capable of adjusting the supply amount of auxiliary compressed air, is controlled to adjust the supply amount of auxiliary compressed air based on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the stage that is switched to a state of supplying compressed air for suction transfer.
When the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer changes, the ability to transfer yarn waste to the yarn waste collection unit 29 using compressed air for suction transfer varies due to the influence of pressure loss within the yarn waste transfer pipe 28. That is, when the distance between the suction pipe 30 connected to the compressed air switching valve for suction transfer 31, which is switched to a state of supplying compressed air for suction transfer, and the yarn waste collection unit 29 is relatively short, the degree of reduction in the transfer capability of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer is small. Conversely, when the distance between the suction pipe 30 connected to the compressed air switching valve for suction transfer 31, which is switched to a state of supplying compressed air for suction transfer, and the yarn waste collection unit 29 is relatively long, the degree of reduction in the transfer capability of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer is large. Therefore, depending on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer, the supply amount of auxiliary compressed air may be excessive or appropriate. On the other hand, the auxiliary compressed air switching valve 41 is configured to be capable of adjusting the supply amount of auxiliary compressed air. In the textile machine 1 of the fifth mode, the auxiliary compressed air switching valve 41 is controlled to change the supply amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41 based on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in a certain stage that is switched to a state of supplying compressed air for suction transfer, thereby adjusting the supply amount of auxiliary compressed air. Therefore, in the textile machine 1 of the fifth mode, it is possible to adjust the supply amount of auxiliary compressed air to the yarn waste transfer pipe 28 in accordance with the transfer capability of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer, which varies depending on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer. As a result, it is possible to suppress the excessive supply of compressed air for transferring yarn waste, thereby suppressing the consumption of compressed air.
Here, an example of the textile machine 1 of the fifth mode, which adjusts the supply amount of auxiliary compressed air based on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in a certain stage that is switched to a state of supplying compressed air for suction transfer, will be described. FIG. 11 is a diagram used to explain the switching modes of the compressed air switching valves for suction transfer 31 and the auxiliary compressed air switching valve 41 during the doffing operation of a winding device 4. This example illustrates a mode where, when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the stage is switched to a state of stopping the supply of auxiliary compressed air, and further, the supply amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41 is switched to adjust the supply amount of auxiliary compressed air based on whether the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer is greater than the distance D but less than the distance D+D2, or greater than the distance D+D2. In the example shown in FIG. 11, in each stage, the suction pipes 30 corresponding to the winding devices 4 from the first column to the fourth column are arranged within the predetermined distance D range from the yarn waste collection unit 29, the suction pipes 30 corresponding to the winding devices 4 from the fifth column to the eighth column are arranged at a distance greater than distance D and less than distance D+D2 from the yarn waste collection unit 29, and the suction pipes 30 corresponding to the winding devices 4 from the ninth column to the twelfth column are arranged at a distance greater than distance D+D2 from the yarn waste collection unit 29. In FIG. 11, among the plurality of winding devices 4 arranged in 12 columns and 5 stages, the winding devices 4 during the doffing operation are schematically shown surrounded by a dashed frame together with the suction pipe 30 and compressed air switching valve for suction transfer 31 corresponding to the winding device 4.
In the case shown in FIG. 11, first, in the first stage, none of the winding devices 4 arranged in 12 columns are performing the doffing operation, and all of the plurality of (12) compressed air switching valves for suction transfer 31 in the first stage are switched to a state of stopping the supply of compressed air for suction transfer. Therefore, the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in the first stage is switched to a state of stopping the supply of auxiliary compressed air. In the case shown in FIG. 11, in the second stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the ninth column is performing the doffing operation, and among the plurality of compressed air switching valves for suction transfer 31 in the second stage, only the compressed air switching valve for suction transfer 31 in the ninth column is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the ninth column is arranged at a position exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the second stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 at a position exceeding the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the second stage is switched to a state of supplying auxiliary compressed air. Further, in this case, only the winding device 4 in the ninth column is performing the doffing operation, and only the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the ninth column is switched to a state of supplying compressed air for suction transfer. The distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the ninth column is greater than distance D+D2. That is, only the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 arranged at a position where the distance from the yarn waste collection unit 29 is greater than distance D+D2 is switched to a state of supplying compressed air for suction transfer. When the distance from the yarn waste collection unit 29 is greater than distance D+D2, the distance between the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer and the yarn waste collection unit 29 is relatively long, the degree of reduction in the transfer capacity of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer is large, and it becomes difficult to satisfactorily supply compressed air for suction transfer to the yarn waste transfer pipe 28. Therefore, the auxiliary compressed air switching valve 41 is controlled so that the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28 through the auxiliary compressed air switching valve 41 is large, and the supply amount of auxiliary compressed air is adjusted to supply a large amount of auxiliary compressed air. In this second stage, the yarn waste generated by the winding device 4 in the ninth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the ninth column and the large amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 11, in the third stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in three winding devices 4: the sixth column, the tenth column, and the eleventh column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the third stage, three compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column are switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the sixth column, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the tenth column, and the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the eleventh column are all arranged at positions exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the third stage, the compressed air switching valves for suction transfer 31 connected to the suction pipes 30 at positions exceeding the predetermined distance D range from the yarn waste collection unit 29 are switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the third stage is switched to a state of supplying auxiliary compressed air. Further, in this case, the winding device 4 in the sixth column is performing the doffing operation, and the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the sixth column is switched to a state of supplying compressed air for suction transfer. The distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the sixth column is greater than distance D and less than distance D+D2. That is, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 arranged at a position where the distance from the yarn waste collection unit 29 is greater than distance D and less than distance D+D2 is switched to a state of supplying compressed air for suction transfer. When the distance from the yarn waste collection unit 29 is greater than distance D and less than distance D+D2, the distance between the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer and the yarn waste collection unit 29 is relatively short, the degree of reduction in the transfer capacity of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer is small, and compressed air for suction transfer is satisfactorily supplied to the yarn waste transfer pipe 28. Therefore, the auxiliary compressed air switching valve 41 is controlled so that the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28 through the auxiliary compressed air switching valve 41 is small, and the supply amount of auxiliary compressed air is adjusted to supply a small amount of auxiliary compressed air. In this third stage, the yarn waste generated by the winding devices 4 in the sixth column, the tenth column, and the eleventh column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column, respectively, and the small amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 11, in the fourth stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the fourth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fourth stage, only the compressed air switching valve for suction transfer 31 in the fourth column is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the fourth column is arranged within a predetermined distance D range from the yarn waste collection unit 29. That is, in the fourth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fourth stage is switched to a state of stopping the supply of auxiliary compressed air. In this fourth stage, the yarn waste generated by the winding device 4 in the fourth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the fourth column.
In the case shown in FIG. 11, in the fifth stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in the winding device 4 in the third column and the winding device 4 in the eighth column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fifth stage, two compressed air switching valves for suction transfer 31, in the third column and the eighth column, are switched to a state of supplying compressed air for suction transfer. Among the two compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the third column is arranged within the predetermined distance D range from the yarn waste collection unit 29. That is, in the fifth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 in the third column within the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fifth stage is switched to a state of stopping the supply of auxiliary compressed air. In this fifth stage, the yarn waste generated by the winding devices 4 in the third column and the eighth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the third column and the eighth column, respectively.

(Sixth Mode)

Next, the sixth mode will be described. The textile machine 1 of the sixth mode is configured as a textile machine 1 that performs the operations of both the textile machine 1 of the fourth mode and the textile machine 1 of the fifth mode described above. That is, the textile machine 1 of the sixth mode is configured such that, under the control of the yarn waste collection control device 7, when a predetermined number or more of the compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, or when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in the stage is switched to a state of supplying compressed air for suction transfer, in either case or in both cases, the auxiliary compressed air switching valve 41 in the stage is switched to a state of stopping the supply of auxiliary compressed air. The textile machine 1 of the sixth mode is configured such that, under the control of the yarn waste collection control device 7, when the compressed air switching valve for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, it controls the auxiliary compressed air switching valve 41, which is configured to be capable of adjusting the supply amount of auxiliary compressed air, to adjust the supply amount of auxiliary compressed air based on the number of compressed air switching valves for suction transfer 31 in the stage that are simultaneously switched to a state of supplying compressed air for suction transfer and the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the stage that is switched to a state of supplying compressed air for suction transfer.
Here, an example of the textile machine 1 of the sixth mode is described, in which, in the case where either or both of the following hold: the case where a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, or the case where, among the plurality of compressed air switching valves for suction transfer 31 in a certain stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air, and furthermore, the supply amount of auxiliary compressed air is adjusted in accordance with the number of compressed air switching valves for suction transfer 31 in that stage that are simultaneously switched to a state of supplying compressed air for suction transfer and the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer. FIG. 12 is a diagram used to explain the switching mode of the compressed air switching valve for suction transfer 31 and the auxiliary compressed air switching valve 41 when the doffing operation of the winding device 4 is performed. In this example, a configuration is illustrated in which, in the case where either or both of the following hold: the case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, or the case where, among the plurality of compressed air switching valves for suction transfer 31 in a certain stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in that stage is switched to a state of stopping the supply of auxiliary compressed air. Furthermore, in this example, a configuration is illustrated in which the supply amount of auxiliary compressed air through the auxiliary compressed air switching valve 41 is switched, thereby adjusting the supply amount of auxiliary compressed air, based on the number of compressed air switching valves for suction transfer 31 that are simultaneously switched to a state of supplying compressed air for suction transfer being one or two, and the supply amount of auxiliary compressed air through the auxiliary compressed air switching valve 41 is switched, thereby adjusting the supply amount of auxiliary compressed air, based on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer being greater than the distance D and less than the distance D+D2, or being greater than the distance D+D2. In the example shown in FIG. 12, in each stage, the suction pipes 30 corresponding to the winding devices 4 from the first column to the fourth column are arranged within the predetermined distance D range from the yarn waste collection unit 29, the suction pipes 30 corresponding to the winding devices 4 from the fifth column to the eighth column are arranged at a distance greater than distance D and less than distance D+D2 from the yarn waste collection unit 29, and the suction pipes 30 corresponding to the winding devices 4 from the ninth column to the twelfth column are arranged at a distance greater than distance D+D2 from the yarn waste collection unit 29. In FIG. 12, among the plurality of winding devices 4 arranged in 12 columns and 5 stages, the winding devices 4 during the doffing operation are schematically shown surrounded by a dashed frame together with the suction pipe 30 and compressed air switching valve for suction transfer 31 corresponding to the winding device 4.
In the case shown in FIG. 12, first, in the first stage, none of the winding devices 4 arranged in 12 columns are performing the doffing operation, and all of the plurality of (12) compressed air switching valves for suction transfer 31 in the first stage are switched to a state of stopping the supply of compressed air for suction transfer. Therefore, the auxiliary compressed air switching valve 41 of the yarn waste transfer pipe 28 in the first stage is switched to a state of stopping the supply of auxiliary compressed air. In the case shown in FIG. 12, in the second stage, among the winding devices 4 arranged in 12 columns, only one winding device 4 in the ninth column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the second stage, only the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the ninth column performing the doffing operation is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the ninth column is arranged at a position exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the second stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 at a position exceeding the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, and furthermore, this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the second stage is switched to a state of supplying auxiliary compressed air. Furthermore, in this case, the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is one, and compared to the case where the number of compressed air switching valves for suction transfer 31 in a certain stage that are simultaneously switched to a state of supplying compressed air for suction transfer is two, a smaller amount of compressed air for suction transfer is supplied to the yarn waste transfer pipe 28. Furthermore, in this case, the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the ninth column switched to a state of supplying compressed air for suction transfer is greater than distance D+D2, the degree of reduction in the transfer capacity of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer is large, and it becomes difficult to satisfactorily supply compressed air for suction transfer to the yarn waste transfer pipe 28. Therefore, the auxiliary compressed air switching valve 41 is controlled so that the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28 through the auxiliary compressed air switching valve 41 is large, and the supply amount of auxiliary compressed air is adjusted to supply a large amount of auxiliary compressed air. In this second stage, the yarn waste generated by the winding device 4 in the ninth column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the ninth column and the large amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 12, in the third stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in three winding devices 4: the sixth column, the tenth column, and the eleventh column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the third stage, three compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column are switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the sixth column, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the tenth column, and the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the eleventh column are all arranged at positions exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the third stage, the compressed air switching valves for suction transfer 31 connected to the suction pipes 30 at positions exceeding the predetermined distance D range from the yarn waste collection unit 29 are switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, but this is a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the third stage is switched to a state of stopping the supply of auxiliary compressed air. In this third stage, the yarn waste generated by the winding devices 4 in the sixth column, the tenth column, and the eleventh column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the sixth column, the tenth column, and the eleventh column, respectively.
In the case shown in FIG. 12, in the fourth stage, among the winding devices 4 arranged in 12 columns, only the winding device 4 in the seventh column is performing the doffing operation. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fourth stage, only the compressed air switching valve for suction transfer 31 in the seventh column is switched to a state of supplying compressed air for suction transfer. The suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the seventh column is arranged at a position exceeding the predetermined distance D range from the yarn waste collection unit 29. That is, in the fourth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 at a position exceeding the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, and furthermore, this is not a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fourth stage is switched to a state of supplying auxiliary compressed air. Further, in this case, the number of compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer simultaneously in a certain stage is one, but the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 corresponding to the winding device 4 in the seventh column switched to a state of supplying compressed air for suction transfer is greater than distance D and less than distance D+D2. Therefore, the degree of reduction in the transfer capacity of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer is small, and compressed air for suction transfer is satisfactorily supplied to the yarn waste transfer pipe 28. Therefore, the auxiliary compressed air switching valve 41 is controlled so that the supply amount of auxiliary compressed air supplied to the yarn waste transfer pipe 28 through the auxiliary compressed air switching valve 41 is small, and the supply amount of auxiliary compressed air is adjusted to supply a small amount of auxiliary compressed air. In this fourth stage, the yarn waste generated by the winding device 4 in the seventh column during the doffing operation is transferred through the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valve for suction transfer 31 in the seventh column and the small amount of auxiliary compressed air supplied through the auxiliary compressed air switching valve 41.
In the case shown in FIG. 12, in the fifth stage, among the winding devices 4 arranged in 12 columns, the doffing operation is performed in two winding devices 4: the third column and the eighth column. Therefore, among the plurality of compressed air switching valves for suction transfer 31 in the fifth stage, two compressed air switching valves for suction transfer 31 in the third column and the eighth column are switched to a state of supplying compressed air for suction transfer. Among the two compressed air switching valves for suction transfer 31 switched to a state of supplying compressed air for suction transfer, the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 in the third column is arranged within the predetermined distance D range from the yarn waste collection unit 29. That is, in the fifth stage, the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 in the third column within the predetermined distance D range from the yarn waste collection unit 29 is switched to a state of supplying compressed air for suction transfer. In this case, because this is not a case where three or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, but this is a case where the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within the predetermined distance D range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the auxiliary compressed air switching valve 41 in the fifth stage is switched to a state of stopping the supply of auxiliary compressed air. In this fifth stage, the yarn waste generated by the winding devices 4 in the third column and the eighth column during the doffing operation is transferred within the yarn waste transfer pipe 28 by the compressed air for suction transfer supplied through the compressed air switching valves for suction transfer 31 in the third column and the eighth column, respectively.

[Effects and Advantages]

In the textile machine 1, the yarn waste transfer pipe 28 extending along the arrangement direction of the plurality of winding devices 4 in each stage has a plurality of suction pipes 30 connected at positions corresponding to the respective winding devices 4, and the compressed air switching valve for suction transfer 31 provided in each of the plurality of suction pipes 30 are switched to supply compressed air for suction transfer. Therefore, depending on the state in which at least one of the plurality of compressed air switching valves for suction transfer 31 is switched to supply compressed air for suction transfer to the yarn waste transfer pipe 28, there may be cases where sufficient compressed air necessary for transferring yarn waste to the yarn waste collection unit 29 through the yarn waste transfer pipe 28 is supplied. In such cases, if auxiliary compressed air is also supplied to the yarn waste transfer pipe 28 to transfer yarn waste, compressed air is supplied excessively beyond what is necessary, leading to an increase in the consumption of compressed air. However, according to the textile machine 1 of the present embodiment, even when at least one of the plurality of compressed air switching valves for suction transfer 31 is switched to a state of supplying compressed air for suction transfer, when the plurality of compressed air switching valves for suction transfer 31 are in a predetermined switching state, the supply of auxiliary compressed air is stopped. Therefore, when the plurality of compressed air switching valves for suction transfer 31 are in a predetermined switching state, and sufficient compressed air necessary for transferring yarn waste to the yarn waste collection unit 29 through the yarn waste transfer pipe 28 is supplied by the compressed air for suction transfer alone, the supply of auxiliary compressed air can be stopped. As a result, it is possible to suppress the unnecessarily excessive supply of compressed air, thereby suppressing the consumption of compressed air.
As described above, according to the present embodiment, in a textile machine 1 equipped with a yarn waste collection device 5 configured to supply compressed air for suction transfer to the suction pipes 30 provided at positions corresponding to the winding devices 4 to suck yarn waste and to supply auxiliary compressed air to the yarn waste transfer pipe 28 connected to the plurality of suction pipes 30, the consumption of compressed air can be suppressed.
Moreover, according to the textile machine 1 of the first mode described above in the present embodiment, when a predetermined number or more of the plurality of compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, the supply of auxiliary compressed air can be stopped. Therefore, when a sufficient amount of compressed air necessary for transferring yarn waste is supplied by a predetermined number or more of the compressed air switching valves for suction transfer 31 in a certain stage simultaneously supplying compressed air for suction transfer, the supply of auxiliary compressed air to the yarn waste transfer pipe 28 can be stopped, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air.
Furthermore, according to the textile machine 1 of the second mode described above in this embodiment, when the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 within a predetermined distance range from the yarn waste collection unit 29 among the plurality of compressed air switching valves for suction transfer 31 in a certain stage is switched to a state of supplying compressed air for suction transfer, the supply of auxiliary compressed air can be stopped. Therefore, when compressed air for suction transfer is supplied from the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 provided at a position close to the yarn waste collection unit 29 within a predetermined distance range, and yarn waste can be sufficiently transferred to the yarn waste collection unit 29 using only the compressed air for suction transfer, the supply of auxiliary compressed air to the yarn waste transfer pipe 28 can be stopped, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air.
Furthermore, according to the textile machine 1 of the third mode described above in this embodiment, when a predetermined number or more of the compressed air switching valves for suction transfer 31 in a certain stage are simultaneously switched to a state of supplying compressed air for suction transfer, thereby supplying a sufficient amount of compressed air necessary for transferring yarn waste, the supply of auxiliary compressed air to the yarn waste transfer pipe 28 can be stopped, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air. Further, according to the textile machine 1 of the third mode, when compressed air for suction transfer is supplied from the compressed air switching valve for suction transfer 31 connected to the suction pipe 30 provided at a position close to the yarn waste collection unit 29 within a predetermined distance range, and yarn waste can be sufficiently transferred to the yarn waste collection unit 29 using only the compressed air for suction transfer, the supply of auxiliary compressed air to the yarn waste transfer pipe 28 can be stopped, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air.
Furthermore, according to the textile machine 1 of the fourth mode described above in this embodiment, the auxiliary compressed air switching valve 41 is configured to enable adjustment of the supply amount of auxiliary compressed air, and when, in a certain stage, a plurality of compressed air switching valves for suction transfer 31 are simultaneously switched to a state of supplying compressed air for suction transfer, the supply amount of auxiliary compressed air can be adjusted based on the number of compressed air switching valves for suction transfer 31 that are simultaneously switched to the state of supplying compressed air for suction transfer. Therefore, the supply amount of auxiliary compressed air to the yarn waste transfer pipe 28 can be adjusted in accordance with the supply amount of compressed air for suction transfer to the yarn waste transfer pipe 28, which varies depending on the number of compressed air switching valves for suction transfer 31 that are switched to the state of supplying compressed air for suction transfer, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air.
Furthermore, according to the textile machine 1 of the fifth mode in this embodiment, the auxiliary compressed air switching valve 41 is configured to enable adjustment of the supply amount of auxiliary compressed air, and when, in a certain stage, a compressed air switching valve for suction transfer 31 is switched to a state of supplying compressed air for suction transfer, the supply amount of auxiliary compressed air can be adjusted based on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 that is switched to the state of supplying compressed air for suction transfer. Therefore, the supply amount of auxiliary compressed air to the yarn waste transfer pipe 28 can be adjusted in accordance with the transfer capability of yarn waste to the yarn waste collection unit 29 by the compressed air for suction transfer, which varies depending on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 that is switched to the state of supplying compressed air for suction transfer, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air.
Furthermore according to the textile machine 1 of the sixth mode in this embodiment, the supply amount of auxiliary compressed air to the yarn waste transfer pipe 28 can be adjusted in correspondence with the supply amount of compressed air for suction transfer to the yarn waste transfer pipe 28, which varies depending on the number of compressed air switching valves for suction transfer 31 switched to the state of supplying compressed air for suction transfer, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air. Further, according to the textile machine 1 of the sixth mode, the supply amount of auxiliary compressed air to the yarn waste transfer pipe 28 can be adjusted in correspondence with the varying ability to transfer yarn waste to the yarn waste collection unit 29 using compressed air for suction transfer based on the distance from the yarn waste collection unit 29 of the suction pipe 30 connected to the compressed air switching valve for suction transfer 31 switched to a state of supplying compressed air for suction transfer, suppressing the excessive supply of compressed air for transferring yarn waste and suppressing the consumption of compressed air.

[Modifications]

As above, the embodiment of the present invention has been described, but the present invention is not limited to the embodiment described above and can be modified in various ways within the scope of the claims. For example, the following modifications may be implemented.
In the embodiment described above, the textile machine 1 was described as being configured as a false-twist texturing machine, but this configuration is not mandatory. The textile machine 1 may be configured as a textile machine other than a false-twist texturing machine.
In the embodiment described above, the winding devices 4 were described as being arranged in 12 columns in the column direction (predetermined direction) and 5 stages in the stage direction, arranged in 12 columns and 5 stages, but this configuration is not mandatory. The numbers of columns and stages of the winding devices 4 are not limited to the example above and may be set to various numbers. Specifically, the winding devices 4 may be implemented in a configuration arranged in 2 to 11 columns or 13 or more columns, and in 2 to 4 stages or 6 or more stages.
In the embodiment described above, in the textile machine 1, the doffing operation is performed by a random doffing method in which the doffing operation is performed for each winding device 4 every time the formation of a package Pw is completed in any of the plurality of winding devices 4, and the yarn waste generated by the winding device 4 performing the doffing operation is collected by the yarn waste collection device 5, but this configuration is not mandatory. In the textile machine 1, the doffing operation of the plurality of winding devices 4 may be performed by a sequence doffing method in which the doffing operations are performed sequentially with a predetermined interval for each winding device 4 and overlap in at least two winding devices 4, and the yarn waste generated by the winding devices 4 performing the doffing operation is collected by the yarn waste collection device 5. When the doffing operations of the plurality of winding devices 4 are performed by the sequence doffing method, the order of the doffing operations of the plurality of winding devices 4 and the timing of performing the doffing operation for each winding device 4 are set in the machine management device 6. The doffing operations of the plurality of winding devices 4 are performed based on instructions from the machine management device 6 in accordance with the order set in the machine management device 6. The machine management device 6 instructs the winding device 4 to start the doffing operation and transmits a doffing operation start signal to the yarn waste collection control device 7. When the yarn waste collection control device 7 receives the doffing operation start signal from the machine management device 6, the yarn waste collection control device 7 detects the winding device 4 that has started the doffing operation and is subject to yarn waste collection. Then, under the control of the yarn waste collection control device 7, the yarn waste collection device 5 operates, and the yarn waste generated by the winding device 4 performing the doffing operation is collected. Thus, even when the doffing operations of the plurality of winding devices 4 in the textile machine 1 are performed by the sequence doffing method, the present invention may be applied.
In the textile machine 1 of the fourth to sixth modes described above, a configuration is exemplified in which the auxiliary compressed air switching valve 41 adjusts the supply amount of auxiliary compressed air by switching between a small amount of supply and a large amount of supply in two levels. However, this configuration is not mandatory, and a configuration may be implemented in which the supply amount of auxiliary compressed air is adjusted by switching among three or more levels. Moreover, the auxiliary compressed air switching valve 41 is not limited to one that adjusts the supply amount of auxiliary compressed air in discrete steps; it may also be configured to adjust the supply amount of auxiliary compressed air continuously in a stepless manner.
In the embodiment described above, a configuration is exemplified in which the auxiliary compressed air switching valve 41 is configured as an auxiliary compressed air switching valve that switches between a state of supplying auxiliary compressed air to the yarn waste transfer pipe 28 and a state of stopping the supply, and is also configured as an auxiliary compressed air switching valve that adjusts the supply amount of auxiliary compressed air. However, this configuration is not mandatory. A configuration may also be implemented in which an auxiliary compressed air switching valve that switches between the state of supplying auxiliary compressed air to the yarn waste transfer pipe 28 and the state of stopping the supply, and an auxiliary compressed air switching valve that adjusts the supply amount of auxiliary compressed air, are provided separately.

(Reference Numerals)

1: Textile machine
4: Winding device
5: Yarn waste collection device
6: Machine management device
7: Yarn waste collection control device
28: Yarn waste transfer pipe
29: Yarn waste collection unit
30: Suction pipe
31: Compressed air switching valve for suction transfer
41: Auxiliary compressed air switching valve
Bw: Bobbin
Pw: Package
Y: Yarn

Claims

A textile machine (1) comprising:
a winding device (4) that winds a yarn (Y) fed continuously onto a bobbin (Bw) to form a package (Pw); and

a yarn waste collection device (5) that collects the yarn waste generated by the winding device (4), wherein

a plurality of the winding devices (4) are arranged in a predetermined direction,

the yarn waste collection device (5) includes a yarn waste transfer pipe (28) provided along an arrangement direction of the plurality of winding devices (4), and a yarn waste collection unit (29) connected to one end side of the yarn waste transfer pipe (28),

the yarn waste transfer pipe (28) at positions corresponding to the plurality of winding devices (4) is connected to a plurality of suction pipes (30) for sucking the yarn waste,

each of the plurality of suction pipes (30) is connected to a compressed air switching valve for suction transfer (31) that switches between a state of supplying compressed air for suction transfer to the suction pipe (30) to suck the yarn waste generated by the corresponding winding device (4) and transfer the yarn waste to the yarn waste collection unit (29) on one end side of the yarn waste transfer pipe (28) and a state of stopping the supply,

the other end side of the yarn waste transfer pipe (28) is connected to an auxiliary compressed air switching valve (41) that switches between a state of supplying auxiliary compressed air to the yarn waste transfer pipe (28) to assist in transferring the yarn waste toward the yarn waste collection unit (29) and a state of stopping the supply,

the auxiliary compressed air switching valve (41) of the yarn waste transfer pipe (28) is switched to a state of supplying the auxiliary compressed air when at least one of the plurality of compressed air switching valves for suction transfer (31) is switched to a state of supplying the compressed air for suction transfer, and

even when at least one of the plurality of compressed air switching valves for suction transfer (31) is switched to a state of supplying the compressed air for suction transfer, the auxiliary compressed air switching valve (41) of the yarn waste transfer pipe (28) is switched to a state of stopping the supply of the auxiliary compressed air when the plurality of compressed air switching valves for suction transfer (31) are in a predetermined switching state.
The textile machine (1) according to claim 1, wherein
a case where the plurality of compressed air switching valves for suction transfer (31) are in the predetermined switching state is when a predetermined number or more of the plurality of compressed air switching valves for suction transfer (31) are simultaneously switched to a state of supplying the compressed air for suction transfer, and in this case, the auxiliary compressed air switching valve (41) is switched to a state of stopping the supply of the auxiliary compressed air.
The textile machine (1) according to claim 1, wherein
a case where the plurality of compressed air switching valves for suction transfer (31) are in the predetermined switching state is when the compressed air switching valve for suction transfer (31) connected to the suction pipe (30) within a predetermined distance range from the yarn waste collection unit (29) among the plurality of compressed air switching valves for suction transfer (31) is switched to a state of supplying the compressed air for suction transfer, and in this case, the auxiliary compressed air switching valve (41) is switched to a state of stopping the supply of the auxiliary compressed air.
The textile machine (1) according to claim 1, wherein
a case where the plurality of compressed air switching valves for suction transfer (31) are in the predetermined switching state is when a predetermined number or more of the plurality of compressed air switching valves for suction transfer (31) are simultaneously switched to a state of supplying the compressed air for suction transfer, or when the compressed air switching valve for suction transfer (31) connected to the suction pipe (30) within a predetermined distance range from the yarn waste collection unit (29) among the plurality of compressed air switching valves for suction transfer (31) is switched to a state of supplying the compressed air for suction transfer, and in either or both of these cases, the auxiliary compressed air switching valve (41) is switched to a state of stopping the supply of the auxiliary compressed air.
The textile machine (1) according to claim 2, wherein
the auxiliary compressed air switching valve (41) is configured to be capable of adjusting the supply amount of the auxiliary compressed air, and adjusts the supply amount of the auxiliary compressed air based on the number of the compressed air switching valves for suction transfer (31) simultaneously switched to a state of supplying the compressed air for suction transfer.
The textile machine (1) according to claim 3, wherein
the auxiliary compressed air switching valve (41) is configured to be capable of adjusting the supply amount of the auxiliary compressed air, and adjusts the supply amount of the auxiliary compressed air based on the distance from the yarn waste collection unit (29) of the suction pipe (30) connected to the compressed air switching valve for suction transfer (31) switched to a state of supplying the compressed air for suction transfer.
The textile machine (1) according to claim 4, wherein
the auxiliary compressed air switching valve (41) is configured to be capable of adjusting the supply amount of the auxiliary compressed air, and adjusts the supply amount of the auxiliary compressed air based on the number of the compressed air switching valves for suction transfer (31) simultaneously switched to a state of supplying the compressed air for suction transfer, and the distance from the yarn waste collection unit (29) of the suction pipe (30) connected to the compressed air switching valve for suction transfer (31) switched to a state of supplying the compressed air for suction transfer.