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.
SUMMARY OF THE INVENTION
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.
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.
A yarn winding machine comprises 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 a supply of fluid and to move the package holding
section 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 approaches
the winding drum, and the second direction being 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, wherein, when
a supply of electricity stops, the control section is
adapted to control the supply of the fluid to the moving
mechanism 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.
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
5 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
10 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
15 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
20 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
25 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
30 spinning device 9. After a spun yarn 10 fed from the
pneumatic spinning device 9 has passed a yarn clearer 52,
5
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.
5 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
10 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
15 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
20 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
25 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
30 in the spinning chamber . With the whirling airflow, a fiber
end of the fiber bundle 8 inside the spinning chamber is
6
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
5 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
10 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
15 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.
20 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.
25 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
30 around the outer peripheral surface of the yarn
accumulating roller 21 is tightly wound around the yarn
7
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
5 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
10 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
15 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
20 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.
25 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
30 clearer 52 before being wound by the yarn accumulating
device 12. The yarn clearer 52 is adapted to monitor a
8
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 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.
10 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
15 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
20 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.
25 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
30 yarn 10. By driving the winding drum 72 with an electric
motor (a driving section), which is not illustrated, while
9
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
5 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.
10 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
15 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.
20 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
25 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
30 61, when there is a difference (pressure difference)
between pressure of air supplied to the contact-pressure
10
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
5 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)
10 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
15 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
20 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
25 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
30 63. When the piston rod 62 is moved in the lower direction,
the swinging portion 71b is pulled in the lower direction
n
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
5 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
10 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
15 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
20 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
25 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
30 rod 62 is moved in the upper direction in conjunction with
the movement of the piston 63. When the piston rod 62 is
12
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
5 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
10 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
15 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,
torgue applied to the swinging portion 71b in the first
20 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
25 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
30 is provided in each of the motor box 5 and the blower box
80 respectively arranged at the both ends of the spinning
13
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
5 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
10 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
15 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
20 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
25 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
30 compressed air source 69 is supplied to the
reverse-pressure port 65.
14
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
5 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
10 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
15 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
20 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
25 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,
30 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
15
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
5 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
10 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
15 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
20 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
25 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
30 released and thus the piston rod 62 can be moved in the upper
direction. In this manner, by supplying air to the lifter
16
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.
5 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
10 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
15 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
20 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
25 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
30 the spun yarn 10 wound around the yarn accumulating roller
21 is the minimal accumulation amount or less, the
17
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.
5 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
10 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
15 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
20 (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
25 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
30 of time. A capacity of the condenser 37 is appropriately
set according to design.
18
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
5 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
10 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
15 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
20 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
25 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
30 determining that the accumulation amount is the minimal
accumulation amount or less, the controller 5 opens the
19
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,
5 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
10 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.
15 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
20 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
25 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
30 22 is integrally rotated with the yarn accumulating roller
21, and the spun yarn 10 is not unwound 'to downstream of
20
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
5 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
10 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
15 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
20 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
25 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.
30 After the disconnection of the spun yarn 10, the
controller 5 closes the solenoid valve 31 to stop the supply
21
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
5 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
10 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
15 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
20 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
25 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
30 swinging portion 71b is swung in the first direction by the
movement of the piston rod 62, the package 45 makes contact
22
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,
5 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
10 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
15 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
20 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
25 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
30 strokes of the piston rod 63 and the lifter piston 85. As
a result, as illustrated in FIG. 7, the swinging portion
23
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
5 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
10 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
15 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
20 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
25 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
30 rotation of the package 45 in contact with the winding drum
72, the winding operation of the spun yarn 10 is resumed.
24
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
5 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
10 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
15 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
20 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
25 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
30 a-position where the swinging portion 71b is located away
from the winding drum 72, and the second position, which
25
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
5 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
10 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
15 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
7 6 . The spun yarn 10 thus can be prevented from being hooked
on the traverse guide 76 and being disconnected.
20 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
25 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
30 receiving section 36 that receives the stop signal, stop
of the supply of the electricity can be reliably recognized.
26
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
5 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
10 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,
15 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
20 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
25 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
30 second position.
In the present embodiment, the spinning machine 1
27
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
5 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
10 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
15 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
20 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
25 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
30 of the manifold 30, swift operations of the air cylinder
60 can be realized.
28
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
5 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
10 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
15 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
20 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
25 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
30 been made with an example in which the traverse guide 76
of the traverse device 75 is commonly driven among the
29
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.
5 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
10 various types of control processing in the winding device
13 may be provided in the winding device 13.
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
15 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
20 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
25 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
30 package is making contact with the winding drum.
Accordingly, in the yarn winding machine, when the
30
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,
5 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
10 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.
15 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
20 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
25 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
30 is wound around the package without being traversed.
Therefore, for example, a slackened yarn can be prevented
31
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
5 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
10 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
15 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
20 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.
In one embodiment, the yarn winding machine may
25 include a supplying section adapted to supply the fluid to
the moving mechanism. The control section may 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
30 supplied) from the supplying section, the moving mechanism
can be favorably controlled.
32
In one embodiment, the moving mechanism may include
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
5 adapted to move the package holding section to the second
position together with the first moving section. The
supplying section may include a first supplying section
adapted to supply the fluid to the first moving section,
and a second supplying section adapted to supply the fluid
10 to the second moving section. The control section may
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
15 section can be moved to the first position and the second
position.
In one embodiment, the first moving section and the
second supplying section may be connected via a solenoid
valve. Pressure of the fluid supplied from the second
20 supplying section may be set higher than pressure of the
fluid supplied from the first supplying section. The
control section may 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
25 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.
30 In one embodiment, the yarn winding machine may
include a plurality of yarn winding units each provided with
33
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.
WE CLAIM:
1. A yarn winding machine comprising:
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 a supply of
fluid and to move the package holding section 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 approaches the winding drum, and
the second direction being 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,
wherein, when a supply of electricity stops, the
control section is adapted to control the supply of the
fluid to the moving mechanism 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.
2. The yarn winding machine according to claim 1,
wherein the control section includes a condenser adapted
to supply power to enable an operation for a prescribed
period of time when the supply of the electricity is
stopped.
3. The yarn winding machine according to claim 1 or
claim 2, further comprising a traverse guide adapted to
traverse the yarn to be wound around the package,
wherein the moving mechanism is adapted to move the
package holding section to a first position and a second
position, the first position being a position where the
package holding section is located away from the winding
drum, and the second position being 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, and
the control section is adapted to 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.
4. The yarn winding machine according.to claim 3,
further comprising a traverse device including the traverse
guide and a driving section adapted to drive the traverse
guide,
wherein the control section is adapted to stop the
traverse device after the package holding section has moved
to the second position.
5. The yarn winding machine according to any one of
claim 1 through claim 4, wherein the control section
includes a receiving section adapted to receive a stop
signal indicating a stop of the supply of the electricity,
and
the control section is adapted to 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.
6. The yarn winding machine according to any one of
claim 1 through claim 5, further comprising a supplying
section adapted to supply the fluid to the moving mechanism,
wherein the control section is adapted to control the
supply of the fluid from the supplying section to the moving
mechanism.
7 . The yarn winding machine according to claim 6,
wherein 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, and
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.
8. The yarn winding machine according to claim 7,
wherein 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 is set higher than pressure of the fluid
supplied from the first supplying section, and
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.
9. The yarn winding machine according to any one of
claim 6 through claim 8, further comprising a plurality of
yarn winding units, each yarn winding unit including the
package holding section, the winding drum, and the moving
mechanism,
wherein the control section is adapted to control the
supply of the fluid from the supplying section to the moving
mechanism for each of the yarn winding units.
10. The yarn winding machine according to claim 9,
wherein the control section is adapted to 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 the stop
of the supply of the electricity.
11. The yarn winding machine according to claim 9 or
claim 10, further comprising 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,
wherein a plurality of supplying sections is provided,
and
wherein a supplying section is connected to each end
of the fluid tube in the arrangement direction.
12. The yarn winding machine according to any one
of claim 9 through claim 11, further comprising 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.
13. The yarn winding machine according to claim 12,
further comprising a yarn joining vehicle adapted to
perform a yarn joining operation to join disconnected yarns
upon disconnection of the yarn,
wherein the control section is adapted to 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.