EP2862826B1

EP2862826B1 - Yarn winding machine

Info

Publication number: EP2862826B1
Application number: EP14184447.2A
Authority: EP
Inventors: Harutoshi Sawada; Masahiko Shirakawa; Shuji Yamada; Hiroyuki Susami; Yuho Terao
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2013-10-21
Filing date: 2014-09-11
Publication date: 2018-01-31
Anticipated expiration: 2034-09-11
Also published as: IN2014DE02890A; EP2862826A1; JP2015081157A; CN104555574B; CN104555574A

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a yarn winding machine.

2. Description of the Related Art

As a conventional yarn winding machine, for example, there is known a yarn winding machine described in Japanese Patent Application Laid-open No. 2004-1980 . The yarn winding machine described in Japanese Patent Application Laid-open No. 2004-1980 includes a motor adapted to rotationally drive a winding drum, a cradle adapted to support a package that rotates in contact with the winding drum, a lift-up mechanism provided to the cradle, a motor control section adapted to control rotational drive of the motor, a unit control section adapted to control the motor control section and the lift-up mechanism, a power failure detecting section adapted to detect power failure of each control section, and a regenerative power generating section adapted to generate regenerative power based on detection of the power failure by controlling the motor control section to decelerate and stop. In this yarn winding machine, when the power failure occurs, the lift-up mechanism is operated by the regenerative power.
EP 2 641 859 A1 describes a winding device capable of maintaining a state in which the package and the roller are separated without using regenerative electric power. A winding device includes a cradle adapted to rotatably support a package; a roller adapted to rotate while making contact with the package to assist winding of a spun yarn; and a lift mechanism adapted to swing the cradle to a contacting state in which the package is made into contact with the roller or a separated state in which the package is separated from the roller, wherein the lift mechanism has a lock function of maintaining each of the states without supply of electric power.
JP 2011-037608 A describes a textile machinery which prevents tangle of a yarn end with a member near a package in the state of winding up the yarn end into a package. A spinning frame includes a winding drum; a cradle arm; and an air cylinder. The winding drum is rotated in contact with a package, and drives the package to rotate. The cradle arm rotatably supports the package, and can move in an approaching direction as a direction making the package approach the winding drum and a separating direction as a direction making the package separate from the winding drum. The air cylinder can apply the force for turning the cradle arm. The air cylinder includes a contact-pressure port and a back-pressure port. Air pressure is supplied to the contact-pressure port to turn the cradle arm in the approaching direction. Air pressure is supplied to the back-pressure port to turn the cradle arm in the separating direction.
DE 43 38 283 A1 describes a method and an apparatus for operating a textile machine producing cross-wound bobbins. A device for monitoring the mains voltage is provided. When a predetermined threshold value is exceeded, corresponding information is fed to the winding-station computers. The winding-station computers activate the thread-severing devices and ensure the release of passive valves which, for example connected to a pressure reservoir, activate the winding-station lift-off devices and the bobbin-braking devices.
EP 2 570 375 A2 describes a spinning machine including a frame, and a cradle device including a cradle arm adapted to rotatably hold a package around which a spun yarn is wound, an air cylinder adapted to drive the cradle arm, and an electromagnetic valve of a male connector section adapted to control the air cylinder, the cradle device being a module provided detachably to the frame.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a yarn winding machine capable of reliably moving a package holding section away from a winding drum when supply of electricity is stopped.
This object is achieved by a yarn winding machine according to claim 1.
As the above-described conventional yarn winding machine, when power failure occurs and supply of electricity is stopped, the cradle is moved such that the package is moved away from the winding drum. The package that has been moved away from the winding drum loses drive force, and thus rotational speed thereof gradually decreases. Operations of a traverse guide adapted to traverse a yarn with respect to the package also gradually stop. At this time, if the yarn is hooked on the traverse guide, the yarn to be wound around the package may slacken. In this case, the slackened yarn may be wound around the package or a bobbin holder of the cradle. If such a defect occurs, since a tangle or the like of the yarn is required to be manually removed, recovery takes time and thus work efficiency is reduced. Therefore, there have been demands for a yarn winding machine in which when the supply of the electricity is stopped, the cradle is reliably moved to a position where the yarn is removed from the traverse guide.
A yarn winding machine according to the present invention includes a package holding section adapted to rotatably hold a package around which a yarn is wound, a winding drum adapted to rotate while making contact with the package, a moving mechanism adapted to receive supply of fluid and to move the package holding section based on pressure of the fluid in a first direction, which is a direction in which the package holding section approaches the winding drum, and a second direction, which is a direction in which the package holding section moves away from the winding drum, and a control section adapted to control the supply of the fluid to the moving mechanism. The control section is adapted to control the supply of the fluid to the moving mechanism when supply of electricity is stopped, such that pressure of the fluid for moving the package holding section in the second direction becomes higher than pressure of the fluid of when the package holding section is moved in the first direction and the package is making contact with the winding drum.
Accordingly, in the yarn winding machine, when the supply of the electricity is stopped, the package holding section is moved by the moving mechanism in the second direction in which the package holding section is moved away from the winding drum. In the yarn winding machine, therefore, the package holding section can be reliably moved away from the winding drum when the supply of the electricity is stopped.
In one embodiment, the control section may include a condenser or a capacitor adapted to supply power to enable an operation for a prescribed period of time when the supply of the electricity is stopped. Accordingly, in the yarn winding machine, even when the supply of the electricity is stopped, the operation is enabled by the power of the condenser, and thus the moving mechanism can be operated.
In one embodiment, the yarn winding machine may include a traverse guide adapted to traverse the yarn to be wound around the package. The moving mechanism may move the package holding section to a first position, which is a position where the package holding section is located away from the winding drum, and a second position, which is a position where the package holding section has been moved farther away from the first position in the second direction and a position where the yarn is removed from the traverse guide. The control section may control the supply of the fluid to the moving mechanism when the supply of the electricity is stopped, such that the package holding section moves to the second position. Accordingly, since the yarn is removed from the traverse guide by moving the package holding section to the second position, the yarn is wound around the package without being traversed. Therefore, for example, a slackened yarn can be prevented from being wound around the package holding section.
In one embodiment, the yarn winding machine may include a traverse device having the traverse guide and a driving section adapted to drive the traverse guide. The control section may stop the traverse device after the package holding section has moved to the second position. Accordingly, the yarn can be prevented from being hooked on the traverse guide. Therefore, the yarn can be prevented from being hooked on the traverse guide and being disconnected.
In one embodiment, the control section may include a receiving section adapted to receive a stop signal indicating stop of the supply of the electricity. The control section may control the supply of the fluid to the moving mechanism when the receiving section receives the stop signal, such that the pressure of the fluid for moving the package holding section in the second direction becomes higher than the pressure of the fluid of when the package holding section is moved in the first direction and the package is making contact with the winding drum. Accordingly, since the control section includes the receiving section adapted to receive the stop signal, stop of the supply of the electricity can be reliably recognized.
The yarn winding machine includes a supplying section adapted to supply the fluid to the moving mechanism. The control section is adapted to control the supply of the fluid from the supplying section to the moving mechanism. Accordingly, by controlling the supply of the fluid (for example, pressure amount of the fluid to be supplied) from the supplying section, the moving mechanism can be favorably controlled.
The moving mechanism includes a first moving section adapted to move the package holding section to the first position, and a second moving section provided integrally with the first moving section and adapted to move the package holding section to the second position together with the first moving section. The supplying section includes a first supplying section adapted to supply the fluid to the first moving section, and a second supplying section adapted to supply the fluid to the second moving section. The control section is adapted to control the supply of the fluid from the first supplying section to the first moving section and the supply of the fluid from the second supplying section to the second moving section. With such a configuration, the package holding section can be moved to the first position and the second position.
The first moving section and the second supplying section are connected via a solenoid valve. Pressure of the fluid supplied from the second supplying section may be set higher than pressure of the fluid supplied from the first supplying section. The control section is adapted to control the solenoid valve when the supply of the electricity is stopped, such that the fluid is supplied from the second supplying section to the first moving section. Accordingly, since fluid having high pressure is supplied to the first moving section and the second moving section when the supply of the electricity is stopped, the package holding section can be swiftly moved to the second position.
In one embodiment, the yarn winding machine may include a plurality of yarn winding units each provided with the package holding section, the winding drum, and the moving mechanism. The control section may control the supply of the fluid from the supplying section to the moving mechanism for each of the yarn winding units. Accordingly, control can be performed based on a state of each yarn winding unit.
In one embodiment, the control section may refrain from performing control to supply the fluid to the moving mechanism of the yarn winding unit when disconnection of the yarn is detected in the yarn winding unit at stop of the supply of the electricity. When the yarn is disconnected at the stop of the supply of the fluid, since the yarn is not hooked on the traverse guide, the moving mechanism is not required to move the package holding section. Therefore, by refraining from performing the control of the yarn winding unit in which the disconnection of the yarn is detected at the stop of the supply of the electricity, energy can be efficiently used.
In one embodiment, the yarn winding machine may include a fluid tube extending along an arrangement direction in which the yarn winding units are arranged and to which the moving mechanism of each of the yarn winding units is connected. The supplying section may be provided in a plurality and be connected to each end of the fluid tube in the arrangement direction. Accordingly, since the fluid is evenly and sufficiently supplied to the moving mechanism of each of the yarn winding units by supplying the fluid from both sides of the fluid tube, swift operations of the moving mechanism can be realized.
In one embodiment, the yarn winding machine may include an operating section adapted to instruct the control section to control the package holding sections of the plurality of the yarn winding units to move to the first position when the supply of the electricity starts. Accordingly, the package holding sections of the plurality of the yarn winding units can be positioned at the first position by one-time operation of the operating section.
In one embodiment, the yarn winding machine may include a yarn joining vehicle adapted to perform a yarn joining operation to join disconnected yarns upon disconnection of the yarn. The control section may control the yarn joining vehicle to start the yarn joining operation after the operating section has been operated and the package holding section has moved to the first position. When the package holding section (the package) is located at the second position, since the package is located away also from the yarn joining vehicle, the yarn joining vehicle is not likely to catch a yarn end from the package. Therefore, by performing the yarn joining operation after the package holding section has been moved to the first position, the yarn joining vehicle is likely to catch the yarn end from the package, and thus the yarn joining operation can be favorably performed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view illustrating a spinning machine according to one embodiment;
FIG. 2 is a view illustrating a cross-sectional structure of the spinning machine of FIG. 1;
FIG. 3 is a view illustrating a cross-sectional structure of an air cylinder;
FIG. 4 is a diagram illustrating a connection configuration between a contact-pressure compressed air source, a lifter compressed air source and an air cylinder, and a configuration of a controller;
FIG. 5 is a view illustrating the connection configuration between the contact-pressure compressed air source, the lifter compressed air and the air cylinder;
FIG. 6 is a cross-sectional structural view of the spinning machine illustrating a state in which a package is located away from a winding drum; and
FIG. 7 is a cross-sectional structural view of the spinning machine illustrating a state in which the package is located away from the winding drum and a yarn is removed from a traverse guide.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

A preferred embodiment of the present invention will be hereinafter described in detail with reference to the accompanying drawings. The same reference numerals are denoted on the same or corresponding elements throughout the drawings, and redundant description will be omitted. In the present specification, "upstream" and "downstream" respectively indicate upstream and downstream in a travelling direction of a yarn at the time of spinning.
A spinning machine 1 as a yarn winding machine illustrated in FIG. 1 includes a plurality of spinning units (yarn winding units) 2 arranged side by side. The spinning machine 1 includes a yarn joining vehicle 3 and a controller (control section) 5. Operations of the spinning machine 1 are controlled by the controller 5. In a factory where the spinning machine 1 is installed, a worker passage extending along an arrangement direction in which the spinning units 2 are arranged is provided on a side of a yarn path of the spun yarn 10 with respect to the yarn joining vehicle 3. A worker performs an operation, monitoring, or the like of each of the spinning units 2 from the worker passage.
As illustrated in FIG. 1, each spinning unit 2 includes a draft device 7, a pneumatic spinning device 9, a yarn accumulating device 12, a waxing device 14, and a winding device 13 in this order from upstream to downstream.
The draft device 7 is provided in proximity to an upper end of a housing 6 of the spinning machine 1 in a height direction of the spinning machine 1. A fiber bundle 8 (see FIG. 2) fed from the draft device 7 is spun by the pneumatic spinning device 9. After a spun yarn 10 fed from the pneumatic spinning device 9 has passed a yarn clearer 52, the spun yarn 10 is fed further downstream by the yarn accumulating device 12 and wax is applied to the spun yarn 10 by the waxing device 14. Then, the spun yarn 10 is wound by the winding device 13 and thereby a package 45 is formed.
The draft device 7 is adapted to produce the fiber bundle 8 by drafting a sliver 15. As illustrated in FIG. 2, the draft device 7 includes four pairs of rollers, which are a pair of back rollers 16, a pair of third rollers 17, a pair of middle rollers 19, each of which is provided with an apron belt 18, and a pair of front rollers 20. Bottom rollers of each pair of rollers 16, 17, 19, and 20 are driven by power from a motor box 5 or a drive source (not illustrated) provided individually. Each pair of rollers 16, 17, 19, and 20 is respectively driven at speeds that are different from one another. As a result, the sliver 15 supplied from upstream is drafted into the fiber bundle 8 and the fiber bundle 8 is fed to the pneumatic spinning device 9 located downstream.
The pneumatic spinning device 9 is adapted to twist the fiber bundle 8 by use of whirling airflow to produce the spun yarn 10. Although detailed description and drawings are omitted, the pneumatic spinning device 9 includes a fiber guiding section, a whirling airflow generating nozzle, and a hollow guide shaft body. The fiber guiding section is adapted to guide the fiber bundle 8 fed from the draft device 7 to a spinning chamber formed inside the pneumatic spinning device 9. The whirling airflow generating nozzle is arranged around a path of the fiber bundle 8 and is adapted to generate the whirling airflow in the spinning chamber. With the whirling airflow, a fiber end of the fiber bundle 8 inside the spinning chamber is inverted and whirled. The hollow guide shaft body is adapted to guide the spun yarn 10 from the spinning chamber to outside the pneumatic spinning device 9.
The yarn accumulating device 12 is provided downstream of the pneumatic spinning device 9. The yarn accumulating device 12 has a function to apply a prescribed tension to the spun yarn 10 to draw the spun yarn 10 from the pneumatic spinning device 9, and a function to accumulate the spun yarn 10 fed from the pneumatic spinning device 9 to prevent the spun yarn 10 from slackening, for example, at the time of a yarn joining operation by the yarn joining vehicle 3, as well as a function to adjust the tension such that variation in tension of the spun yarn 10 in the winding device 13 does not propagate to the pneumatic spinning device 9. As illustrated in FIG. 2, the yarn accumulating device 12 includes a yarn accumulating roller 21, a yarn hooking member 22, an upstream guide 23, an electric motor 25, a downstream guide 26, and an accumulation amount sensor 27.
The yarn hooking member 22 is adapted to be engaged with the spun yarn 10 and to wind the spun yarn 10 around an outer peripheral surface of the yarn accumulating roller 21 by rotating integrally with the yarn accumulating roller 21 while being engaged with the spun yarn 10.
The yarn accumulating roller 21 is adapted to accumulate the spun yarn 10 by winding a prescribed amount of the spun yarn 10 around the outer peripheral surface thereof. The yarn accumulating roller 21 is rotationally driven by the electric motor 25. The spun yarn 10 wound around the outer peripheral surface of the yarn accumulating roller 21 is tightly wound around the yarn accumulating roller 21 by rotation of the yarn accumulating roller 21, and pulls a spun yarn 10 located upstream of the yarn accumulating device 12. That is, by rotating the yarn accumulating roller 21 with the spun yarn 10 wound around the outer peripheral surface thereof at a prescribed rotational speed, the yarn accumulating device 12 applies a prescribed tension to the spun yarn 10 and draws the spun yarn 10 from the pneumatic spinning device 9 at a prescribed speed to transport the spun yarn 10 to downstream at a prescribed speed.
The accumulation amount sensor 27 is adapted to detect in a non-contacting manner, an accumulation amount of the spun yarn 10 wound around the yarn accumulating roller 21. The accumulation amount sensor 27 outputs an accumulation amount signal indicating a detected accumulation amount of the spun yarn 10 to the controller 5.
The upstream guide 23 is arranged slightly upstream of the yarn accumulating roller 21. The upstream guide 23 is adapted to appropriately guide the spun yarn 10 to the outer peripheral surface of the yarn accumulating roller 21. The upstream guide 23 prevents twists of the spun yarn 10 that propagate from the pneumatic spinning device 9 from propagating to downstream of the upstream guide 23.
The yarn clearer 52 is provided on a front surface side of the housing 6 of the spinning machine 1 (a side of the worker passage), and between the pneumatic spinning device 9 and the yarn accumulating device 12. The spun yarn 10 spun by the pneumatic spinning device 9 passes the yarn clearer 52 before being wound by the yarn accumulating device 12. The yarn clearer 52 is adapted to monitor a thickness of the travelling spun yarn 10 and/or a presence or absence of a foreign substance in the spun yarn 10. When detecting a yarn defect of the spun yarn 10, the yarn clearer 52 outputs a yarn defect detection signal to the controller 5. A cutter 57 adapted to disconnect the spun yarn 10 upon detection of the yarn defect is arranged upstream of the yarn clearer 52. The cutter 57 may be omitted, and the spun yarn 10 may be disconnected by stopping supply of air to the pneumatic spinning device 9.
The waxing device 14 is provided downstream of the yarn accumulating device 12. The waxing device 14 is adapted to apply wax to the spun yarn 10 travelling from the yarn accumulating device 12 to the winding device 13.
The winding device 13 includes a package holding section 71, a winding drum 72, and a traverse device 75. The package holding section 71 is adapted to rotatably hold the package 45. The package holding section 71 includes a fixed portion 71a fixed to the housing 6, and a swinging portion 71b capable of swinging forward and backward with respect to the fixed portion 71a. The swinging portion 71b is supported swingably about a support shaft 70 in the fixed portion 71a. The swinging portion 71b is provided with a bobbin holder (not illustrated) adapted to rotatably hold a bobbin 48 around which the spun yarn 10 is wound.
The winding drum 72 is adapted to make contact with an outer peripheral surface of the bobbin 48 or an outer peripheral surface of the package 45 and to rotationally drive the bobbin 48 or the package 45. The traverse device 75 includes a traverse guide 76 capable of guiding the spun yarn 10. By driving the winding drum 72 with an electric motor (a driving section), which is not illustrated, while reciprocating the traverse guide 76 with a drive means (not illustrated), the winding device 13 rotates the package 45 in contact with the winding drum 72 while traversing the spun yarn 10, and thus winds the spun yarn 10 around the package 45. The traverse guide 76 of the traverse device 75 is commonly driven in each spinning unit 2 by a shaft provided in common to the plurality of spinning units 2.
An air cylinder (a moving mechanism) 60 is coupled to the fixed portion 71a of the package holding section 71. The air cylinder 60 is adapted to swing (move) the swinging portion 71b about the support shaft 70 by moving the fixed portion 71a. The air cylinder 60 is a double-acting air pressure cylinder, and receives supply of air and moves the swinging portion 71b by the air. The air cylinder 60 includes a cylinder portion (a first moving section) 61 and a lifter portion (a second moving section) 90. The cylinder portion 61 includes a piston rod 62, a piston 63 fixed to the piston rod 62, a contact-pressure port 64, and a reverse-pressure port 65.
The contact-pressure port 64 is provided at one end portion of a cylinder case of the cylinder portion 61 in a longitudinal direction (an upper end portion in FIG. 3), and communicates with an interior portion of the cylinder case. The reverse-pressure port 65 is provided at the other end portion of the cylinder case (a lower end portion in FIG. 3), and communicates with an interior portion of the cylinder case. Air is supplied from the contact-pressure port 64 and the reverse-pressure port 65 into the cylinder case of the cylinder portion 61. In the cylinder portion 61, when there is a difference (pressure difference) between pressure of air supplied to the contact-pressure port 64 and pressure of air supplied to the reverse-pressure port 65, air pushes the piston 63 in one direction and thus the piston rod 62 is moved. The swinging portion 71b coupled to the piston rod 62 via the fixed portion 71a is swung in accordance with movement of the piston rod 62.
The contact-pressure port 64 is connected to a contact-pressure compressed air source (a first supplying section) 66. The contact-pressure compressed air source 66 is a supplying section adapted to supply air (fluid) having prescribed pressure, and the pressure of the air is controlled by the controller 5. As illustrated in FIG. 1, the contact-pressure compressed air source 66 is provided in each of the motor box 5 and a blower box 80 that are respectively arranged at both ends of the spinning machine 1 with the plurality of spinning units 2 therebetween. As illustrated in FIG. 5, the contact-pressure compressed air source 66 is connected to each end of a manifold (a fluid tube) 30 extending along the arrangement direction of the spinning units 2. The contact-pressure compressed air source 66 is connected to the contact-pressure port 64 of the air cylinder 60 in each of the spinning units 2 via the manifold 30 and supplies air to the cylinder portion 61.
In the cylinder portion 61, when air having prescribed pressure is supplied from the contact-pressure compressed air source 66 to the contact-pressure port 64, the piston 63 is pushed in a lower direction of FIG. 3 by the air supplied from the contact-pressure port 64 into the cylinder case, and the piston rod 62 is moved in the lower direction in conjunction with the movement of the piston 63. When the piston rod 62 is moved in the lower direction, the swinging portion 71b is pulled in the lower direction in conjunction with the movement of the piston rod 62, and the swinging portion 71b is swung in an approaching direction in which the package 45 is pressed against the winding drum 72 (a first direction in which the swinging portion 71b approaches the winding drum 72).
A solenoid valve 31 is arranged between the contact-pressure port 64 and the contact-pressure compressed air source 66. By the controller 5 controlling opening/closing of the solenoid valve 31, a flow rate of the air supplied to the contact-pressure port 64 is controlled.
The contact-pressure compressed air source 66 is connected to the reverse-pressure port 65. The contact-pressure compressed air source 66 is connected to the reverse-pressure port 65 of the air cylinder 60 in each spinning unit 2 via the manifold 30, and supplies air to the cylinder portion 61. A depressurization valve 67, a shuttle valve 32, and a solenoid valve 33 are arranged between the contact-pressure compressed air source 66 and the reverse-pressure port 65. By the controller 5 controlling opening/closing of the solenoid valve 33, a flow rate of the air supplied to the reverse-pressure port 65 is controlled.
In the cylinder portion 61, when air is supplied from the contact-pressure compressed air source 66 to the reverse-pressure port 65, the piston 63 is pushed by the air in an upper direction (an upper direction of FIG. 3), which is opposite from the direction of when the air is supplied to the contact-pressure port 64, and the piston rod 62 is moved in the upper direction in conjunction with the movement of the piston 63. When the piston rod 62 is pushed upward, the swinging portion 71b is swung in a move-away direction in which the package 45 is moved away from the winding drum 72 (a second direction in which the swinging portion 71b is moved away from the winding drum 72). At this time, the swinging portion 71b is located at a first position (see FIG. 6).
As illustrated in FIG. 4, the depressurization valve 67 is arranged between the contact-pressure compressed air source 66 and the reverse-pressure port 65 and upstream of the reverse-pressure port 65, and is adapted to depressurize the air supplied by the contact-pressure compressed air source 66. By the depressurization valve 67, air having pressure lower than pressure of the air of the contact-pressure port 64 is supplied to the reverse-pressure port 65. When the air is being supplied to the contact-pressure port 64, since the pressure of the air of the reverse-pressure port 65 offsets the pressure of the air of the contact-pressure port 64 to some degree, torque applied to the swinging portion 71b in the first direction can be reduced.
A shuttle valve 32 is arranged downstream of the depressurization valve 67. In addition to the contact-pressure compressed air source 66, a lifter compressed air source (a second supplying section) 69 is further connected to the shuttle valve 32. The lifter compressed air source 69 is a supplying section adapted to supply air (fluid) having prescribed pressure, and the pressure of the air is controlled by the controller 5. As illustrated in FIG. 1, the lifter compressed air source 69 is provided in each of the motor box 5 and the blower box 80 respectively arranged at the both ends of the spinning unit 2 with the plurality of spinning units 2 therebetween. As illustrated in FIG. 5, the lifter compressed air source 69 is connected to each side of the manifold 30. The lifter compressed air source 69 is connected to the reverse-pressure port 65 of the air cylinder 60 in each of the spinning units 2 via the manifold 30, and supplies air to the reverse-pressure port 65. Specifically, the lifter compressed air source 69 is connected to the shuttle valve 32 via a solenoid valve 34 and supplies air to the reverse-pressure port 65 via the shuttle valve 32 and the solenoid valve 34.
The shuttle valve 32 is adapted to compare the pressure of the air supplied from the contact-pressure compressed air source 66 with the pressure of the air supplied from the lifter compressed air source 69, and to cause the compressed air source having higher pressure to communicate with an exit (the reverse-pressure port 65). That is, among the air supplied from the contact-pressure compressed air source 66 and the air supplied from the lifter compressed air source 69, the shuttle valve 32 supplies the air having higher pressure to the reverse-pressure port 65. In the present embodiment, the pressure of the air supplied from the lifter compressed air source 69 is set higher than the pressure of the air supplied from the contact-pressure compressed air source 66 to the shuttle valve 32 via the depressurization valve 67. Therefore, when the air from the lifter compressed air source 69 flows into the shuttle valve 32, the shuttle valve 32 can be switched such that the air supplied from the lifter compressed air source 69 is supplied to the reverse-pressure port 65.
A lifter portion 90 includes a lifter port 84, a lifter piston 85, a steel ball 86, and a spring 87. As illustrated in FIGS. 2 and 4, the lifter compressed air source 69 is connected to the lifter port 84. The lifter compressed air source 69 is connected to the lifter port 84 of the air cylinder 60 in each of the spinning units 2 via the manifold 30, and supplies air to the lifter portion 90. A solenoid valve 35 is arranged between the lifter compressed air source 69 and the lifter port 84. By the controller 5 controlling opening/closing of the solenoid valve 35, a flow rate of the air supplied to the lifter port 84 is controlled.
As illustrated in FIG. 3, in the lifter portion 90, when air is not supplied to the lifter port 84, the lifter piston 85 is urged in the lower direction of FIG. 3 by the spring 87. In this state, the piston rod 62 can be freely moved in a vertical direction. In the lifter portion 90, when air having prescribed pressure is supplied from the lifter compressed air source 69 to the lifter port 84, the lifter piston 85 is moved in the upper direction of FIG. 3 by action of the pressure of the air.
A through hole that vertically passes through the piston rod 62 is formed in the lifter piston 85. The through hole is tapered in a lower side of FIG. 3, and an inclined surface 85a is formed as an inner peripheral surface. A plurality of the steel balls 86 is arranged between the inclined surface 85a and the piston rod 62.
In the lifter portion 90, when air is supplied from the lifter compressed air source 69 to the lifter port 84, the lifter piston 85 is moved in the upper direction of FIG. 3 by the air, and the steel balls 86 bite into the inclined surface 85a and the piston rod 62. In the lifter portion 90, when the steel balls 86 bite into the inclined surface 85a and the piston rod 62, the piston rod 62 is locked to the lifter piston 85 by wedge action of the inclined surface 85a and the steel balls 86, and the piston rod 62 and the lifter piston 85 are integrally moved in the upper direction of FIG. 3. That is, in the lifter portion 90, by supplying the air to the lifter port 84, the piston rod 62 is moved in the upper direction of FIG. 3 by a stroke of the lifter piston 85. Accordingly, the swinging portion 71b coupled to the piston rod 62 is pushed upward, and the swinging portion 71b is slightly swung in the second direction in which the package 45 is moved away from the winding drum 72. At this time, when air is supplied from the contact-pressure compressed air source 66 to the reverse-pressure port 65, and air is not supplied to the contact-pressure port 64, the swinging portion 71b is positioned at a second position (see FIG. 7) where the swinging portion 71b is located farther away from the winding drum 72 than the first position (see FIG. 6).
When the air is supplied to the lifter port 84, since the piston rod 62 is locked by the wedge action, the piston rod 62 is fixed so as not to move in the lower direction of FIG. 3. On the other hand, even when the air is supplied to the lifter port 84, the piston rod 62 can be moved in the upper direction of FIG. 3. That is, when the piston rod 62 is moved in the upper direction of FIG. 3, since the steel balls 86 biting into the piston rod 62 and the inclined surface 85a are released, the lock by the wedge action is released and thus the piston rod 62 can be moved in the upper direction. In this manner, by supplying air to the lifter port 84, the lifter portion 90 functions to regulate a moving direction of the piston rod 62 to be only one direction.
Next, the yarn joining vehicle 3 will be described. As illustrated in FIGS. 1 and 2, the yarn joining vehicle 3 is adapted to travel by wheels on a rail 41 along the arrangement direction of the spinning units 2 in a lower portion of the housing 6 in which the draft device 7, the pneumatic spinning device 9, and the like are arranged. The yarn joining vehicle 3 includes a splicer 43, a suction pipe 44, and a suction mouth 46.
After a yarn breakage or a yarn cut has occurred in a certain spinning unit 2, the yarn joining vehicle 3 travels to such a spinning unit 2 along the rail 41, and stops. The suction pipe 44 sucks and catches a yarn end fed from the pneumatic spinning device 9 and guides the caught yarn end to the splicer 43 while vertically swinging with an axis as a center. The suction mouth 46 sucks and catches a yarn end from the package 45 supported by the winding device 13 and guides the caught yarn end to the splicer 43 while vertically swinging with an axis as a center. The splicer 43 performs a yarn joining operation to join the guided yarn ends together.
Next, the controller 5 will be described. When receiving the accumulation amount signal output from the accumulation amount sensor 27, the controller 5 determines whether or not an accumulation amount indicated by the accumulation amount signal is a minimal accumulation amount or less. When determining that the accumulation amount of the spun yarn 10 wound around the yarn accumulating roller 21 is the minimal accumulation amount or less, the controller 5 adjusts a winding speed of the spun yarn 10 by the winding device 13 such that the accumulation amount of the spun yarn 10 around the yarn accumulating roller 21 becomes more than the minimal accumulation amount. Specifically, the controller 5 controls supply of air to the air cylinder 60.
When receiving the yarn defect detection signal output from the yarn clearer 52, the controller 5 controls the cutter 57 to cut the spun yarn 10 and controls the supply of the air to the air cylinder 60 such that the package 45 is moved away from the winding drum 72. The controller 5 controls the yarn joining vehicle 3 to perform the yarn joining operation in the relevant spinning unit 2.
The controller 5 includes a signal receiving section 36. The signal receiving section 36 is adapted to receive a stop signal. The stop signal is a signal for indicating that power failure (stop of supply of electricity to the controller 5) including instantaneous interruption has occurred, and is output from a voltage monitoring section (not illustrated). After the signal receiving section 36 has received the stop signal, the controller 5 controls the supply of the air to the air cylinder 60. At the time of the power failure, power to drive the controller 5, the solenoid valves 31, 33, 34, and 35, and each compressed air source 66, 69 is supplied from a condenser 37 implemented in a circuit board that forms the controller 5. Power is stored in the condenser 37. When supply of electricity is stopped, the condenser 37 supplies power that enables operations in the spinning machine 1 for a prescribed period of time. A capacity of the condenser 37 is appropriately set according to design.
After the power failure, when the supply of the electricity is started and an operation button (an operating section) 38 is pressed, the controller 5 controls the supply of the air to the air cylinder 60. The operation button 38 is a button for instructing the controller 5 to perform an operation to move the swinging portions 71b of the winding sections 13 of the plurality of spinning units 2 to the first position, and is displayed, for example, on a display (an operation panel) 39 provided on the motor box 5.
Next, operations of the spinning machine 1 will be described. Firstly, operations of the spinning machine 1 at normal time will be described.
During normal winding of the spun yarn 10 (a state illustrated in FIG. 2), air is not supplied to the reverse-pressure port 65 and the lifter port 84, and air is supplied from the contact-pressure compressed air source 66 to the contact-pressure port 64. Accordingly, the package 45 makes contact with the winding drum 72 at prescribed contact pressure, and the spun yarn 10 is wound around the package 45.
In a state in which the spun yarn 10 is being wound around the package 45, the accumulation amount sensor 27 detects the accumulation amount of the spun yarn 10 accumulated around the yarn accumulating roller 21, and outputs the accumulation amount signal to the controller 5. The controller 5 determines whether or not the accumulation amount indicated by the accumulation amount signal is the minimal accumulation amount or less. When determining that the accumulation amount is the minimal accumulation amount or less, the controller 5 opens the solenoid valve 35 such that air is supplied from the lifter compressed air source 69 to the lifter port 84.
When the air is supplied to the lifter port 84, the piston rod 62 is moved in the upper direction by the air, a moved distance corresponding to the stroke of the lifter piston 85, and as illustrated in FIG. 6, the package 45 is moved away from the winding drum 72. At this time, air is being supplied to the contact-pressure port 64. Accordingly, the piston rod 62 receives force in the lower direction, but since the piston rod 62 is locked by the wedge action of the lifter portion 90, the piston rod 62 does not move. Consequently, while the air is supplied to the lifter portion 90, the package 45 maintains a state of being located away from the winding drum 72.
While the package 45 is located away from the winding drum 72, drive force is lost, and thus the winding speed of the package 45 gradually decreases. In accordance with this decrease in the winding speed, a speed at which the spun yarn 10 is wound around the package 45 decreases. At this time, since the pneumatic spinning machine 9 is producing the spun yarn 10 at a speed equivalent to a speed at normal time, an amount of the spun yarn 10 supplied from upstream of the yarn accumulating roller 21 becomes greater than an amount of the spun yarn 10 unwound to downstream of the yarn accumulating roller 21. Accordingly, the accumulation amount of the yarn accumulating roller 21 increases. Furthermore, since the speed at which the spun yarn 10 is wound decreases, tension on the yarn accumulating roller 21 is reduced. As a result, the yarn hooking member 22 is integrally rotated with the yarn accumulating roller 21, and the spun yarn 10 is not unwound to downstream of the yarn accumulating roller 21. Also by this, the accumulation amount of the yarn accumulating roller 21 increases.
When determining that the accumulation amount of the spun yarn 10 detected by the accumulation amount sensor 27 is a prescribed amount or more, the controller 5 closes the solenoid valve 35 and stops the supply of the air from the lifter compressed air source 69 to the lifter port 84. When the supply of the air to the lifter port 84 is stopped, the lock by the wedge action is released and the piston rod 62 is moved in the lower direction by action of the pressure of the air supplied to the contact-pressure port 64. Since the swinging portion 71b is swung in the first direction by the movement of the piston rod 62, the package 45 makes contact with the winding drum 72. Since the package 45 is rotated in contact with the winding drum 72, winding operation of the spun yarn 10 is resumed at a normal speed.
Next, operations of when a yarn defect of the spun yarn 10 is detected in the spinning machine 1 will be described.
When detecting the yarn defect during the winding of the spun yarn 10, the yarn clearer 52 outputs the yarn defect detection signal to the controller 5. Upon receiving the yarn defect detection signal, the controller 5 immediately controls the cutter 57 to disconnect the spun yarn 10. After the spun yarn 10 has been disconnected by the disconnecting operation with the cutter 57, a downstream yarn end is wound around the package 45 accompanying the rotation of the package 45.
After the disconnection of the spun yarn 10, the controller 5 closes the solenoid valve 31 to stop the supply of the air to the contact-pressure port 64, and simultaneously opens the solenoid valve 33 to supply air to the reverse-pressure port 65. Accordingly, the piston rod 62 is moved in the upper direction, and as illustrated in FIG. 6, the package 45 is moved away from the winding drum 72 and located at the first position. Furthermore, the controller 5 opens the solenoid valve 35 to supply air to the lifter port 84. Accordingly, the piston rod 62 is moved in the upper direction, a moved distance corresponding to the stroke of the lifter piston 85, and as illustrated in FIG. 7, the package 45 is moved farther away from the winding drum 72 and located at the second position.
After the package 45 has been moved to the second position, the controller 5 controls the yarn joining vehicle 3 to perform the yarn joining operation of the spun yarn 10. After the yarn joining operation by the yarn joining vehicle 3 has been completed, the controller 5 closes the solenoid valve 33 and the solenoid valve 35 to stop the supply of the air from the contact-pressure compressed air source 66 to the reverse-pressure port 65 and the supply of the air from the lifter compressed air source 69 to the lifter port 84, and opens the solenoid valve 31 to supply the air from the contact-pressure compressed air source 66 to the contact-pressure port 64. When the supply of the air to the reverse-pressure port 65 and the lifter port 84 is stopped, the piston rod 62 is moved in the lower direction by the action of the pressure of the air supplied to the contact-pressure port 64. Since the swinging portion 71b is swung in the first direction by the movement of the piston rod 62, the package 45 makes contact with the winding drum 72. By rotation of the package 45 in contact with the winding drum 72, the winding operation of the spun yarn 10 is resumed.
Next, operations when power failure, for example, occurs in the spinning machine 1 will be described.
When the power failure occurs, the controller 5 receives the stop signal by the signal receiving section 36. When receiving the stop signal, the controller 5 opens the solenoid valve 33, the solenoid valve 34, and the solenoid valve 35 of the spinning unit 2 in which disconnection of the spun yarn 10 is not detected. When the solenoid valve 34 is opened, air is supplied from the lifter compressed air source 69 to the shuttle valve 32, and the shuttle valve 32 is switched. Accordingly, air is supplied from the lifter compressed air source 69 to the reverse-pressure port 65 and the lifter port 84.
When the air is supplied from the lifter compressed air source 69 to the reverse-pressure port 65 and the lifter port 84, in the cylinder portion 61, pressure of the air of the reverse-pressure port 65 becomes higher than pressure of the air of the contact-pressure port 64, and the piston 63 is moved in the upper direction. That is, the pressure of the air for moving the swinging portion 71b in the second direction becomes higher than the pressure of the air of when the swinging portion 71b is moved and the package 45 makes contact with the winding drum 72. In the lifter portion 90, the lifter piston 85 is moved in the upper direction. Accordingly, the piston rod 62 is moved in the upper direction, a moved distance corresponding to strokes of the piston rod 63 and the lifter piston 85. As a result, as illustrated in FIG. 7, the swinging portion 71b is moved to the second position, and the package 45 is moved away from the winding drum 72. At this time, the spun yarn 10 is removed from the traverse guide 76.
After the power has been recovered and the electricity has been supplied again, when the operation button 38 is pressed, the controller 5 closes the solenoid valves 31, the solenoid valves 34 and the solenoid valves 35 of the plurality of spinning units 2. Accordingly, air is supplied from the contact-pressure compressed air source 66 to the reverse-pressure port 65, and the piston rod 62 is moved in the upper direction, causing the swinging portion 71b to move. As a result, the package 45 is moved to the first position. After the swinging portion 71b has been moved to the first position, the controller 5 controls the yarn joining vehicle 3 to perform the yarn joining operation of the spun yarn 10.
After the yarn joining operation by the yarn joining vehicle 3 has been completed, the controller 5 closes the solenoid valve 33 to stop the supply of the air from the contact-pressure compressed air source 66 to the reverse-pressure port 65, and opens the solenoid valve 31 to supply air from the contact-pressure compressed air source 66 to the contact-pressure port 64. When the supply of the air to the reverse-pressure port 65 is stopped, the piston rod 62 is moved in the lower direction by the action of the pressure of the air supplied to the contact-pressure port 64. Since the swinging portion 71b is swung in the first direction by the movement of the piston rod 62, the package 45 makes contact with the winding drum 72. By the rotation of the package 45 in contact with the winding drum 72, the winding operation of the spun yarn 10 is resumed.
As described above, in the spinning machine 1 of the present embodiment, when the supply of the electricity is stopped, the controller 5 controls the supply of the air to the air cylinder 60 such that the pressure of the air for moving the swinging portion 71b in the second direction becomes higher than the pressure of the air of when the swinging portion 71b is moved and the package 45 is making contact with the winding drum 72. Accordingly, in the spinning machine 1, when the supply of the electricity is stopped, the swinging portion 71b is moved by the air cylinder 60 in the second direction in which the swinging portion 71b is moved away from the winding drum 72. Therefore, in the spinning machine 1, the swinging portion 71b that holds the package 45 can be reliably moved away from the winding drum 72 when the supply of the electricity is stopped.
In the present embodiment, the controller 5 includes the condenser 37 adapted to supply the power that enables operations for the prescribed period of time when the supply of the electricity is stopped. Accordingly, in the spinning machine 1, even when the supply of the electricity is stopped, the power of the condenser 37 enables operations, and thus the air cylinder 60 can be operated. Therefore, in the spinning machine 1, even when the supply of the electricity is stopped, the swinging portion 71b that holds the package 45 can be reliably moved away from the winding drum 72.
In the present embodiment, the air cylinder 60 moves the swinging portion 71b to the first position, which is a position where the swinging portion 71b is located away from the winding drum 72, and the second position, which is a position where the swinging portion 71b is moved farther away from the first position in the second direction and a position where the spun yarn 10 is removed from the traverse guide 76. In this configuration, when the supply of the electricity is stopped, the controller 5 controls the supply of the air to the air cylinder 60 such that the swinging portion 71b is moved to the second position. In this manner, since the spun yarn 10 is removed from the traverse guide 76 by moving the swinging portion 71b to the second position, the spun yarn 10 is wound around the package 45 without being traversed (a bunch-winding is formed) . Therefore, for example, a slackened spun yarn 10 can be prevented from being wound around a bobbin holder.
In the present embodiment, after the swinging portion 71b has been moved to the second position, the controller 5 stops the traverse device 75. Accordingly, the spun yarn 10 can be prevented from being hooked on the traverse guide 76. The spun yarn 10 thus can be prevented from being hooked on the traverse guide 76 and being disconnected.
In the present embodiment, the controller 5 includes the signal receiving section 36 adapted to receive the stop signal indicating that the supply of the electricity is stopped. When the receiving section 36 receives the stop signal, the controller 5 controls the supply of the air to the air cylinder 60 such that the pressure of the air for moving the swinging portion 71b in the second direction becomes higher than the pressure of the air of when the package 45 is making contact with the winding drum 72. Accordingly, since the controller 5 includes the signal receiving section 36 that receives the stop signal, stop of the supply of the electricity can be reliably recognized.
In the present embodiment, the spinning machine 1 includes the cylinder portion 61 that moves the swinging portion 71b to the first position, and the lifter portion 90 that is provided integrally with the cylinder portion 61 and moves the swinging portion 71b to the second position together with the cylinder portion 61. Air is supplied from the contact-pressure compressed air source 66 to the cylinder portion 61, and air is supplied from the lifter compressed air source 69 to the lifter portion 90. In such a configuration, the controller 5 controls the supply of the air from the contact-pressure compressed air source 66 to the cylinder portion 61 and the supply of the air from the lifter compressed air source 69 to the lifter portion 90. Since the spinning machine 1 has such a configuration, the swinging portion 71b can be moved to the first position and the second position.
In the present embodiment, the cylinder portion 61 and the lifter compressed air source 69 are connected via the solenoid valve 34. Pressure of the air supplied from the lifter compressed air source 69 is set higher than pressure of the air supplied from the contact-pressure compressed air source 66. When the signal receiving section 36 receives the stop signal, the controller 5 controls the solenoid valve 34 such that the air from the lifter compressed air source 69 is also supplied to the cylinder portion 61. Accordingly, when the supply of the electricity is stopped, since air having high pressure is supplied to the cylinder portion 61 and the lifter portion 90, the swinging portion 71b can be swiftly moved to the second position.
In the present embodiment, the spinning machine 1 includes the plurality of spinning units 2, and the controller 5 controls the supply of the air to the air cylinder 60 of each spinning unit 2. Accordingly, the spinning machine 1 can perform control based on a state of each spinning unit 2.
In the present embodiment, when disconnection of the spun yarn 10 is detected in the spinning unit 2 at stop of the supply of the electricity, the controller 5 refrains from performing control to supply air to the air cylinder 60 of such a spinning unit 2. When the spun yarn 10 is disconnected at the stop of the supply of the electricity, since the spun yarn 10 is not hooked on the traverse guide 76, the swinging portion 71b is not required to be moved by the air cylinder 60. Therefore, by refraining from performing the control of the spinning unit 2 in which the disconnection of the spun yarn 10 is detected at the stop of the supply of the electricity, energy can be efficiently used.
In the present embodiment, each of the contact-pressure compressed air source 66 and the lifter compressed air source 69 are provided in plurality (two each in the present embodiment). One contact-pressure compressed air source 66 and one lifter compressed air source 69 are connected to one end of the manifold 30, and one contact-pressure compressed air source 66 and one lifter compressed air source 69 are connected to the other end of the manifold 30. Accordingly, since the air is evenly and sufficiently supplied to the air cylinder 60 of each spinning unit 2 by supplying the air from both sides of the manifold 30, swift operations of the air cylinder 60 can be realized.
In the present embodiment, after the swinging portion 71b has moved to the first position by the operation of the operation button 38, the controller 5 controls the yarn joining vehicle 3 to start the yarn joining operation. When the swinging portion 71b (the package 45) is located at the second position, since the package 45 is located away also from the yarn joining vehicle 3, the suction mouth 46 of the yarn joining vehicle 3 is not likely to suck (catch) the yarn end from the package 45. Therefore, by performing the yarn joining operation after the swinging portion 71b has been moved to the first position, the suction mouth 46 can easily suck the yarn end from the package 45, and thus the yarn joining operation can be favorably performed.
The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the air cylinder 60 is described as an example of a moving mechanism, but the moving mechanism is not limited to the air cylinder 60. The moving mechanism may be a cylinder adapted to operate by fluid, for example. Furthermore, the moving mechanism is not limited to a cylinder, and may include another mechanism.
In the above-described embodiment, the spun yarn 10 from the pneumatic spinning device 9 is fed by the yarn accumulating roller 21 that accumulates the spun yarn 10 by winding a certain amount of the spun yarn 10 therearound, but a spun yarn from a pneumatic spinning device may be fed by a delivery roller and a nip roller.
In the above-described embodiment, description has been made with an example in which the traverse guide 76 of the traverse device 75 is commonly driven among the plurality of spinning units 2, but each section of a spinning unit (for example, a draft device, a pneumatic spinning device, a winding device, and the like) may be independently driven in each spinning unit 2.
In the above-described embodiment, description has been made with an example in which the controller 5 adapted to perform control of the entire spinning machine 1 performs various types of control processing in the winding device 13. However, for example, a controller dedicated to the various types of control processing in the winding device 13 may be provided in the winding device 13.

Claims

A yarn winding machine (1) comprising:
a package holding section (71) adapted to rotatably hold a package (45) around which a yarn (10) is wound;

a winding drum (72) adapted to rotate while making contact with the package (45);

a moving mechanism (60) adapted to receive a supply of fluid and to move the package holding section (71) in a first direction and a second direction based on pressure of the fluid, the first direction being a direction in which the package holding section (71) approaches the winding drum (72), and the second direction being a direction in which the package holding section (71) moves away from the winding drum (72); and

a control section (5) adapted to control the supply of the fluid to the moving mechanism (60),
wherein, when a supply of electricity stops, the control section (5) is adapted to control the supply of the fluid to the moving mechanism (60) such that pressure of the fluid for moving the package holding section (71) in the second direction becomes higher than pressure of the fluid of when the package holding section (71) is moved in the first direction and the package (45) is making contact with the winding drum (72),

characterized by

a supplying section (66, 69) adapted to supply the fluid to the moving mechanism (60),

wherein the control section (5) is adapted to control the supply of the fluid from the supplying section (66, 69) to the moving mechanism (60),

wherein the moving mechanism (60) includes a first moving section (61) adapted to move the package holding section (71) to the first position, and a second moving section (90) provided integrally with the first moving section (61) and adapted to move the package holding section (71) to the second position together with the first moving section (61),

wherein the supplying section (66, 69) includes a first supplying section (66) adapted to supply the fluid to the first moving section (61) and a second supplying section (69) adapted to supply the fluid to the second moving section (90), and

wherein the control section (5) is adapted to control the supply of the fluid from the first supplying section (66) to the first moving section (61) and the supply of the fluid from the second supplying section (69) to the second moving section (90),

wherein the first moving section (61) and the second supplying section (69) are connected via a solenoid valve (34),

wherein pressure of the fluid supplied from the second supplying section (69) is set higher than pressure of the fluid supplied from the first supplying section (66), and

wherein the control section (5) is adapted to control the solenoid valve (34), when the supply of the electricity is stopped, such that the fluid is supplied from the second supplying section (69) to the first moving section (61).
The yarn winding machine (1) according to claim 1, wherein
the control section (5) includes a condenser (37) adapted to supply power to enable an operation for a prescribed period of time when the supply of the electricity is stopped.
The yarn winding machine (1) according to claim 1 or claim 2, further comprising a traverse guide (76) adapted to traverse the yarn (10) to be wound around the package (45),
wherein the moving mechanism (60) is adapted to move the package holding section (71) to a first position and a second position, the first position being a position where the package holding section (71) is located away from the winding drum (72), and the second position being a position where the package holding section (71) has been moved farther away from the first position in the second direction and a position where the yarn (10) is removed from the traverse guide (76), and
the control section (5) is adapted to control the supply of the fluid to the moving mechanism (60), when the supply of the electricity is stopped, such that the package holding section (71) moves to the second position.
The yarn winding machine (1) according to claim 3, further comprising a traverse device (75) including the traverse guide (76) and a driving section adapted to drive the traverse guide (76),
wherein the control section (5) is adapted to stop the traverse device (75) after the package holding section (71) has moved to the second position.
The yarn winding machine (1) according to any one of claim 1 through claim 4, wherein the control section (5) includes a receiving section (36) adapted to receive a stop signal indicating a stop of the supply of the electricity, and
the control section (5) is adapted to control the supply of the fluid to the moving mechanism (60), when the receiving section (36) receives the stop signal, such that the pressure of the fluid for moving the package holding section (71) in the second direction becomes higher than the pressure of the fluid of when the package holding section (71) is moved in the first direction and the package (45) is making contact with the winding drum (72).
The yarn winding machine (1) according to claim 1, further comprising a plurality of yarn winding units (2), each yarn winding unit (2) including the package holding section (71), the winding drum (72), and the moving mechanism (60),
wherein the control section (5) is adapted to control the supply of the fluid from the supplying section (66, 69) to the moving mechanism (60) for each of the yarn winding units (2).
The yarn winding machine (1) according to claim 6, wherein
the control section (5) is adapted to refrain from performing control to supply the fluid to the moving mechanism (60) of the yarn winding unit (2) when disconnection of the yarn (10) is detected in the yarn winding unit (2) at the stop of the supply of the electricity.
The yarn winding machine (1) according to claim 6 or claim 7, further comprising a fluid tube (30) extending along an arrangement direction in which the yarn winding units (2) are arranged and to which the moving mechanism (60) of each of the yarn winding units (2) is connected,
wherein a plurality of supplying sections (66, 69) is provided, and
wherein a supplying section (66, 69) is connected to each end of the fluid tube (30) in the arrangement direction.
The yarn winding machine (1) according to any one of claim 6 through claim 8, further comprising an operating section (38) adapted to instruct the control section (5) to control the package holding sections (71a) of the plurality of the yarn winding units (2) to move to the first position when the supply of the electricity starts.
The yarn winding machine (1) according to claim 9, further comprising a yarn joining vehicle (3) adapted to perform a yarn joining operation to join disconnected yarns (10) upon disconnection of the yarn (10),
wherein the control section (5) is adapted to control the yarn joining vehicle (3) to start the yarn joining operation after the operating section (38) has been operated and the package holding section (71) has moved to the first position.