[Technical Field]
[0001]
The present invention relates to a yarn winding machine.
[Background]
[0002]
Patent Literature 1 discloses a winding unit (yarn winding
machine) configured to form a package by winding a running
yarn pulled out from a yarn supplying bobbin (yarn supplying
part) onto a winding bobbin which is being rotated. The yarn
winding machine includes: a winding part configured to wind
the yarn pulled out from the yarn supplying part onto the
winding bobbin; a yarn processing execution part (yarn
joining section) configured to join yarns together when the
yarn is divided into the yarns between the yarn supplying
part and the winding part in a yarn running direction; and
a yarn clearer configured to detect a yarn defect and to cut
the yarn. The winding part includes: a cradle which supports
a bobbin to be rotatable; a traversing drum (contact drum)
configured to rotate a package upon making contact with the
package and to traverse the yarn; and a drum driving part
configured to rotate the contact drum. The yarn joining
section includes: a splicer (yarn joining device) configured
to join two yarns together; and a suction mouth (capturing
3
part) configured to suck and retain one of the yarns which
is provided on the winding part side in the yarn running
direction and to guide the one of the yarns to the yarn
joining device. The yarn joining section is configured to
guide also the other of the yarns which is provided on the
yarn supplying part side to the yarn joining device.
[0003]
In the yarn winding machine, when the yarn is disconnected
between the yarn supplying part and the package for some
reason during a winding operation of the yarn (e.g., when
the yarn clearer detects a yarn defect and the yarn is cut),
the yarn joining section performs a yarn joining operation.
To be more specific, as the drum driving part rotates the
contact drum in a direction opposite to a direction of
rotation of the contact drum at a time of the winding
operation, one of the yarns which is provided on the winding
part side is pulled out, sucked and retained by the capturing
part, and guided to the yarn joining device. In this regard,
the yarn joining section guides also the other of the yarns
which is on the yarn supplying part side to the yarn joining
device. After that, the yarn joining device joins the two
yarns together to form a joint.
[0004]
The yarn winding machine includes an operation switch
(operating part), and is able to switch the state of the
4
yarn winding machine between an operating state and a
stopped state as an operator operates the operating part.
With this arrangement, the operation of the yarn winding
machine can be stopped after completion of the yarn joining
operation in such a way that, e.g., an operator operates the
operating part during the yarn joining operation. For
example, when the operation of the yarn winding machine is
stopped, it is possible to check the strength of the joint
by intentionally pulling and breaking the joint with use of
a tension testing machine and measuring applied pressure at
a time of yarn breakage.
[Citation List]
[Patent Literatures]
[0005]
[PLT 1] Japanese Laid-Open Patent Publication No. 2011-16631
[Summary of the Invention]
[Technical Problem]
[0006]
A predetermined number of joints may be intentionally formed
in a package for a strength test of the joints included in
the package formed (made) at a yarn winding machine. For
example, each time a predetermined time elapses during a
winding operation, an operator cuts a running yarn by using
a cutter, etc. and the running yarn is disconnected. After
that, a yarn joining section performs a yarn joining
5
operation so as to form a joint. A required number of joints
are formed by repeating these serial steps. However, when a
large number of packages are required, it takes much labor
for the operator to manually perform an operation for
cutting each yarn.
[0007]
Furthermore, when a joint of the yarn is broken for the
strength test after completion of the yarn joining operation,
execution of the yarn joining operation is required again.
In this case, the broken yarn hangs down from the package.
Therefore, when the direction in which the package is
rotated is simply reversed at a time of executing the yarn
joining operation again, the hanging yarn may be
disadvantageously wound onto the contact drum which is
reversely rotated. As a result, the yarn may not be properly
captured by the capturing part.
[0008]
The first object of the present invention is to reduce labor
required for intentionally forming a joint of a yarn. The
second object of the present invention is to prevent a yarn
from being disadvantageously wound onto a contact drum when
(i) the operation of a winding part is stopped while a yarn
joining operation is completed and then (ii) the yarn
joining operation is performed again.
[Solution to Problem]
6
[0009]
According to a first aspect of the invention, a yarn winding
machine includes: a yarn supplying part capable of supplying
a yarn; at least one winding part configured to perform a
winding operation of forming a package by winding the yarn
onto a bobbin, the yarn being pulled out from the yarn
supplying part; a dividing part capable of causing the
running yarn to be disconnected between the yarn supplying
part and the at least one winding part in a yarn running
direction; a joint formation part which performs, when the
yarn is disconnected between the yarn supplying part and the
at least one winding part in the yarn running direction, a
joint forming operation of forming at least one joint by
joining one yarn end of the yarn to another yarn end of the
yarn or a fiber, the one yarn end being provided on the at
least one winding part side in the yarn running direction,
the another yarn end or the fiber being supplied from the
yarn supplying part; and a controller, and each time the
yarn is wound by the at least one winding part for a
predetermined length, the controller being able to execute,
as a winding mode of winding the yarn, a test package making
mode of controlling the at least one winding part and the
dividing part so that the yarn is disconnected between the
yarn supplying part and the at least one winding part and
causing the joint formation part to perform the joint
7
forming operation.
[0010]
Such a test package making mode is executed so that, each
time the yarn is wound for the predetermined length, the
yarn is not manually cut by an operator but is cut by the
dividing part and each joint is formed by the joint formation
part. As such, the package for a test is automatically made.
It is therefore possible to reduce labor required for
intentionally forming each joint of the yarn.
[0011]
According to a second aspect of the invention, the yarn
winding machine of the first aspect is arranged such that
the controller is configured to count, as the number of
joints, the number of successful executions of the joint
forming operation among the total number of executions of
the joint forming operation executed by the joint formation
part in the test package making mode.
[0012]
According to this aspect of the invention, it is possible
to know the number of the formed joints. It is therefore
possible to control each component of the yarn winding
machine according to need, based on information regarding
the number of the joints.
[0013]
According to a third aspect of the invention, the yarn
8
winding machine of the second aspect is arranged such that
the controller is configured to control the at least one
winding part, the dividing part, and the joint formation
part so as to form a predetermined number or more of joints
in the package in the test package making mode.
[0014]
According to this aspect of the invention, the predetermined
number or more of the joints are formed in the package
without needing human workforce.
[0015]
According to a fourth aspect of the invention, the yarn
winding machine of the third aspect is arranged such that
the controller finishes making of the package when
determining that the predetermined number or more of the
joints are formed in the package in the test package making
mode.
[0016]
The yarn winding machine needs to perform the yarn joining
operation not only when the yarn is cut in order to
intentionally form the joints but also when the yarn is cut
because of a different reason (e.g., when yarn breakage
occurs by chance). Therefore, for example, when (i) an
amount (length of the yarn) of the yarn which should be
wound onto the package is set to be a constant value and
(ii) the number of occurrences of disconnection of the yarn
9
because of a reason different from formation of the joints
is high, a lot of the joints are formed. However, depending
on contents of the test to be executed, even when the total
amount of the yarn which is wound onto the package is
slightly different between plural packages, the number of
the joints is preferentially arranged to be the same between
the plural packages. In this regard, according to this
aspect of the invention, because the making of the package
ends when the number of the joints in the package reaches
the predetermined number, the number of the joints is
identical between the plural packages.
[0017]
According to a fifth aspect of the invention, the yarn
winding machine of any one of the second to fourth aspects
further includes a capturing part which pulls, when the yarn
is disconnected between the yarn supplying part and the at
least one winding part in the yarn running direction, a part
of the yarn which is provided on the at least one winding
part side in the yarn running direction out from the package
and guides the part of the yarn to the joint formation part.
This yarn winding machine is arranged such that the
controller is configured to decrease the counted number of
joints in accordance with information regarding pull-out
length of the yarn which is pulled out from the package by
the capturing part until the joint forming operation is
10
performed by the joint formation part in the test package
making mode.
[0018]
Typically, when pulling out of the yarn by the capturing
part fails, it is required to drive the capturing part again.
Furthermore, when the pulling out of the yarn by the
capturing part fails, a part of the pulled-out yarn may be
wasted as an unnecessary yarn. In this case, one joint
included in the yarn which has been already wound onto the
package may be pulled out from the package and wasted. As a
result, a desired number of the joints may not be formed in
the package. According to this aspect of the invention, the
number of the joints is decreased in accordance with the
information regarding the pull-out length. Because of this,
the number of the formed joints is correctly counted. It is
therefore possible to form the desired number of the joints
in the package.
[0019]
According to a sixth aspect of the invention, the yarn
winding machine of any one of the second to fourth aspects
further includes: a joint detection part configured to
detect a joint included in the running yarn; and a capturing
part which pulls, when the yarn is disconnected between the
yarn supplying part and the at least one winding part in the
yarn running direction, a part of the yarn which is provided
11
on the at least one winding part side in the yarn running
direction out from the package and guides the part of the
yarn to the joint formation part. This yarn winding machine
is arranged such that the controller decreases the counted
number of joints when the joint detection part detects a
joint included in the yarn pulled out from the package by
the capturing part in the test package making mode.
[0020]
According to this aspect of the invention, when joints which
are detectable by the joint detection part are formed,
whether the number of formed joints is decreased can be
known based on a detection result of the joint detection
part.
[0021]
According to a seventh aspect of the invention, the yarn
winding machine of any one of the first to sixth aspects
further includes a capturing part which pulls, when the yarn
is disconnected between the yarn supplying part and the at
least one winding part in the yarn running direction, a part
of the yarn which is provided on the at least one winding
part side in the yarn running direction out from the package
and guides the part of the yarn to the joint formation part.
This yarn winding machine is arranged such that the
controller is configured to determine a timing of
disconnecting the running yarn based on information
12
regarding pull-out length of the yarn pulled out from the
package by the capturing part in the test package making
mode.
[0022]
Typically, when the pulling out of the yarn by the capturing
part fails, it is required to drive the capturing part again.
In this case, intervals between the joints may be greatly
dispersed. According to this aspect of the invention, it is
possible to determine the timing of disconnecting the yarn
based on the information regarding the pull-out length.
Because of this, it is possible to suppress the dispersion
of the intervals between the joints.
[0023]
According to an eighth aspect of the invention, the yarn
winding machine of any one of the first to seventh aspects
is arranged such that the controller is able to change the
predetermined length during the making of the package in the
test package making mode.
[0024]
For example, when the frequency of disconnection of the yarn
due to a reason different from the formation of the joints
is high, the number of the joints included in the package
may be too large or the total amount of the yarn which is
wound onto the package may be too small. According to this
aspect of the invention, because the predetermined length
13
can be changed during the making of the package, the
frequency of intentionally forming each joint is also
adjustable. It is therefore possible to adjust the number
of the joints included in the package and the total amount
of the yarn wound on the package, according to need.
[0025]
According to a ninth aspect of the invention, the yarn
winding machine of any one of the first to eighth aspects
further includes an operation part operated by an operator.
This yarn winding machine is arranged such that the
controller restarts the winding operation only when the
operation part is operated after completion of the joint
forming operation in the test package making mode.
[0026]
When the package for the test is formed, it is required to
manually perform marking for the vicinity of each joint in
order to easily check the position of each joint. In this
regard, when (i) settings are performed so that the winding
operation is automatically restarted after the completion
of the joint forming operation and (ii) an unskilled
operator performs an operation, the marking may not be
timely performed. According to this aspect of the invention,
because the winding operation is restarted only when the
operation part is operated, a case where the marking is not
timely performed is reliably avoided.
14
[0027]
According to a tenth aspect of the invention, the yarn
winding machine of any one of the first to ninth aspects is
arranged such that the yarn supplying part is a spinning
part configured to produce a spun yarn as the yarn. This
yarn winding machine further includes: a pulling part
configured to pull the yarn supplied from the yarn supplying
part out toward the downstream side in the yarn running
direction, the yarn supplying part being a spinning part
configured to produce a spun yarn as the yarn; a yarn defect
detection part provided between the spinning part and the
pulling part in the yarn running direction; and a joint
detection part provided between the pulling part and the at
least one winding part in the yarn running direction.
[0028]
In the yarn winding machine configured to produce the spun
yarn, the execution of the test package making mode makes
it possible to reduce labor to intentionally form the joints
of the yarn.
[0029]
According to an eleventh aspect of the invention, the yarn
winding machine of any one of the first to tenth aspects
further includes: plural winding parts; and driving sources
configured to independently drive the respective winding
parts.
15
[0030]
According to this aspect of the invention, the inertial mass
of each of the driving sources can be reduced as compared
to a case where the winding parts are driven together by a
common driving source. Because of this, the package is
reliably rotatable at a desired circumferential speed.
Especially, when the rotating contact roller is in contact
with the package so that the package is rotated due to
friction force, slipping of the package from the contact
roller is suppressed. It is therefore possible to suppress
the difference between the pitch of the joints and the set
pitch in the test package making mode.
[0031]
According to a twelfth aspect of the invention, the yarn
winding machine of any one of the first to eleventh aspects
further includes an input part in which information
regarding the predetermined length is able to be input.
[0032]
According to this aspect of the invention, the pitch of the
joints is freely settable.
[0033]
According to a thirteenth aspect of the invention, the yarn
winding machine of any one of the first to twelfth aspects
is arranged such that the joint formation part includes: a
splicer configured to twist the another yarn end and the one
16
yarn end together by means of a compressed gas, the another
yarn end being provided on the yarn supplying part side in
the yarn running direction, the one yarn end being provided
on the winding part side in the yarn running direction; a
piecer configured to entangle the fiber supplied from the
yarn supplying part in the one yarn end on the winding part
side, the one yarn end moving downward in the yarn running
direction; or a knotter configured to connect the one yarn
end on the winding part side and the another yarn end on the
yarn supplying part side in the yarn running direction.
[0034]
To be more specific, the test package making mode is
executable also in any structure in which the splicer,
piecer, or knotter is provided as the joint formation part.
[0035]
According to a fourteenth aspect of the invention, the yarn
winding machine of the thirteenth aspect is arranged such
that the controller is able to change joint quality settings
regarding the joint forming operation performed by the joint
formation part during the making of the package in the test
package making mode.
[0036]
In the test package making mode, joints which are formed
under various conditions may be preferably included in one
package. According to this aspect of the invention, because
17
the joint quality settings can be changed, one package can
include joints which are formed under various conditions.
[0037]
According to a fifteenth aspect of the invention, the yarn
winding machine of the fourteenth aspect is arranged such
that the joint formation part includes the splicer, the
splicer includes: a first untwisting part configured to
untwist a first yarn end provided on the yarn supplying part
side in the yarn running direction; a second untwisting part
configured to untwist a second yarn end provided on the
winding part side in the yarn running direction; a twisting
part configured to twist the first yarn end and the second
yarn end together; and a joint length adjustment part
capable of changing length of the joint, and the controller
is able to change, as the joint quality settings, at least
one of: length of time taken by untwisting of the first yarn
end; length of time taken by untwisting of the second yarn
end; length of time taken by entanglement performed by the
twisting part; and length of the joint.
[0038]
Because at least one of the above-described settings is
specifically settable in the splicer, a sample for the test
can be made under various conditions. It is therefore
possible to set a suitable yarn jointing condition based on
a result of the test.
18
[0039]
According to a sixteenth aspect of the invention, the yarn
winding machine of the fifteenth aspect further includes a
pressure adjustment part capable of changing at least one
of pressure of a first compressed gas, pressure of a second
compressed gas, and pressure of a third compressed gas. This
yarn winding machine is arranged such that the first
untwisting part is configured to untwist the first yarn end
by means of the first compressed gas, the second untwisting
part is configured to untwist the second yarn end by means
of the second compressed gas, the twisting part is
configured to twist the first yarn end and the second yarn
end together by means of the third compressed gas, and the
controller is able to change settings of the pressure
adjustment part as the joint quality settings.
[0040]
When the pressure adjustment part is provided, the settings
of the pressure adjustment part can be changed.
[0041]
According to a seventeenth aspect of the invention, the yarn
winding machine of the thirteenth aspect is arranged such
that the yarn supplying part includes a spinning part
configured to produce a spun yarn as the yarn, the joint
formation part includes the piecer, and the piecer includes
the spinning part and is configured to perform the joint
19
forming operation by entangling a fiber supplied by the
spinning part in the one yarn end provided on the winding
part side in the yarn running direction.
[0042]
According to this aspect of the invention, each of the joints
is formed in such a way that the fiber supplied by the
spinning part is entangled in the one yarn end provided on
the winding part side in the yarn running direction. The
test package making mode is executable also in such a
structure.
[0043]
According to an eighteenth aspect of the invention, the yarn
winding machine of the seventeenth aspect is arranged such
that the spinning part is configured to produce the spun
yarn by the compressed gas, and in the test package making
mode, the controller is able to change at least one of:
pressure of the compressed gas; length of each of the joints;
and yarn feeding speed of the yarn during the joint forming
operation, as the joint quality settings regarding the joint
forming operation performed by the joint formation part
during the making of the package.
[0044]
At least one of the above-described settings can be
specifically changed in the piecer.
[0045]
20
According to a nineteenth aspect of the invention, a yarn
winding machine includes: a yarn supplying part capable of
supplying a yarn; a winding part configured to perform a
winding operation of forming a package by winding the yarn
pulled out from the yarn supplying part onto a bobbin; a
yarn joining section configured to perform a yarn joining
operation of joining yarns divided between the yarn
supplying part and the winding part in a yarn running
direction, the winding part including: a cradle which
rotatably supports the package; a contact drum configured
to rotate upon making contact with the package supported by
the cradle; and a driving part capable of rotationally
driving the package or the contact drum in a forward
rotational direction and a reverse rotational direction, the
yarn joining section including: a yarn joining device
configured to join the yarns together; and a capturing part
configured to guide one of the yarns which is provided on
the winding part side in the yarn running direction to the
yarn joining device, the yarn winding machine further
comprising: an operation part operated by an operator; and
a controller, when the yarn joining section is caused to
perform the yarn joining and the winding operation is
stopped until a predetermined condition is satisfied while
the yarn joining operation is completed, the controller (i)
being able to execute yarn rejoining control of causing the
21
yarn joining section to perform the yarn joining operation
again before restart of the winding operation in a case
where the predetermined condition is satisfied and, in the
yarn rejoining control, (ii) causing the driving part to
rotationally drive the package or the contact drum in the
forward rotational direction before causing the capturing
part to capture one of the yarns and at the same time causing
the driving part to rotationally drive the package or the
contact drum in the reverse rotational direction.
[0046]
When the winding operation is stopped after completion of
the yarn joining operation, the operator may intentionally
break a joint in order to, e.g., test the strength of the
joint. When the joint is broken, the yarn joining section
is necessarily caused to perform the yarn joining operation
again (i.e., to perform the yarn rejoining control). In this
regard, because one of the divided yarns which is provided
on the winding part side in a yarn running direction hangs
down from the package, the hanging one of the yarns may be
disadvantageously wound onto the contact drum as the package
is simply rotated in the reverse rotational direction at a
time of the yarn joining operation. According to this aspect
of the invention, as the package or the contact drum is
rotationally driven in the forward rotational direction in
the yarn rejoining control, the one of the yarns which hangs
22
down from the package is temporarily wound onto the package.
It is therefore possible to prevent the yarns from being
disadvantageously wound onto the contact drum when (i) the
operation of the winding part is stopped while the yarn
joining operation is completed and then (ii) the yarn
joining operation is performed again.
[0047]
According to a twentieth aspect of the invention, the yarn
winding machine of the nineteenth aspect further includes a
yarn detection part provided between the yarn supplying part
and the winding part in the yarn running direction. This
yarn winding machine is arranged such that, only when any
of the yarns is not detected by the yarn detection part, the
controller executes the yarn rejoining control before
restarting the winding operation in a case where the
predetermined condition is satisfied.
[0048]
When (i) the winding operation is to be restarted after the
yarn joining operation and (ii) any of the yarns is not
detected by the yarn detection part, the yarn rejoining
control is required because it is reliably determined that
the yarns are divided. Meanwhile, when the yarn detection
part detects any of the yarns, it is estimated that the
yarns are not divided (i.e., the winding operation may be
restarted without the yarn rejoining control). It is
23
therefore possible to avoid the performance of unnecessary
operations by omitting the yarn rejoining control when the
yarn rejoining control is unnecessary.
[Brief Description of Drawings]
[0049]
[FIG. 1] FIG. 1 is a front elevation of an automatic winder
of a first embodiment.
[FIG. 2] FIG. 2 is a block diagram of an electric
configuration of the automatic winder.
[FIG. 3] FIG. 3 is a front elevation of a winding unit.
[FIG. 4] FIG. 4 shows a yarn joining device and its
surroundings.
[FIGs. 5] Each of FIGs. 5(a) and 5(b) is a profile of the
winding unit.
[FIGs. 6] Each of FIGs. 6(a) and 6(b) shows a screen
displayed on a display.
[FIG. 7] FIG. 7 is a flowchart showing a first control
example from the start of making a package for a test until
the end of the making.
[FIG. 8] FIG. 8 is a flowchart showing a second control
example.
[FIG. 9] FIG. 9 is a flowchart showing a third control
example.
[FIG. 10] FIG. 10 is a flowchart showing a fourth control
example.
24
[FIG. 11] FIG. 11 is a front elevation of an air spinning
machine of a second embodiment.
[FIG. 12] FIG. 12 is a profile of the air spinning machine.
[FIG. 13] FIG. 13 is a profile of an air spinning machine
of a modification of the second embodiment.
[FIG. 14] FIG. 14 shows a screen displayed on a display of
a third embodiment.
[FIGs. 15] Each of FIGs. 15(a) and 15(b) shows how the
winding unit works.
[FIG. 16] FIG. 16 is a flowchart showing control performed
by a unit controller.
[FIGs. 17] Each of FIGs. 17(a) and 17(b) shows how the
winding unit works.
[Preferred Embodiment of Invention]
[0050]

The following will describe a first embodiment of the
present invention. Hereinafter, a left-right direction on
the sheet of FIG. 1 will be referred to as a left-right
direction. Furthermore, an up-down direction on the sheet
of FIG. 1 will be referred to as an up-down direction
(vertical direction) in which the gravity acts. Furthermore,
a direction orthogonal to both the left-right direction and
the up-down direction will be referred to as a front-rear
direction. Furthermore, a direction in which a yarn Y runs
25
will be referred to as a yarn running direction.

We Claim:
[Claim 1]
A yarn winding machine comprising: a yarn supplying part
capable of supplying a yarn;
at least one winding part configured to perform a winding
operation of forming a package by winding the yarn onto a
bobbin, the yarn being pulled out from the yarn supplying
part;
a dividing part capable of causing the running yarn to be
disconnected between the yarn supplying part and the at
least one winding part in a yarn running direction;
a joint formation part which performs, when the yarn is
disconnected between the yarn supplying part and the at
least one winding part in the yarn running direction, a
joint forming operation of forming at least one joint by
joining one yarn end of the yarn to another yarn end of the
yarn or a fiber, the one yarn end being provided on the at
least one winding part side in the yarn running direction,
the another yarn end or the fiber being supplied from the
yarn supplying part; and
a controller, and
each time the yarn is wound by the at least one winding part
for a predetermined length, the controller being able to
execute, as a winding mode of winding the yarn, a test
package making mode of controlling the at least one winding
95
part and the dividing part so that the yarn is disconnected
between the yarn supplying part and the at least one winding
part and causing the joint formation part to perform the
joint forming operation.
[Claim 2]
The yarn winding machine according to claim 1, wherein, the
controller is configured to count, as the number of joints,
the number of successful executions of the joint forming
operation among the total number of executions of the joint
forming operation executed by the joint formation part in
the test package making mode.
[Claim 3]
The yarn winding machine according to claim 2, wherein, the
controller is configured to control the at least one winding
part, the dividing part, and the joint formation part so as
to form a predetermined number or more of joints in the
package in the test package making mode.
[Claim 4]
The yarn winding machine according to claim 3, wherein, the
controller finishes making of the package when determining
that the predetermined number or more of joints are formed
in the package in the test package making mode.
[Claim 5]
The yarn winding machine according to any one of claims 2
to 4, further comprising a capturing part which pulls, when
96
the yarn is disconnected between the yarn supplying part and
the at least one winding part in the yarn running direction,
a part of the yarn which is provided on the at least one
winding part side in the yarn running direction out from the
package and guides the part of the yarn to the joint
formation part, wherein,
the controller is configured to decrease the counted number
of joints in accordance with information regarding pull-out
length of the yarn which is pulled out from the package by
the capturing part until the joint forming operation is
performed by the joint formation part in the test package
making mode.
[Claim 6]
The yarn winding machine according to any one of claims 2
to 4, further comprising a joint detection part configured
to detect a joint included in the running yarn; and
a capturing part which pulls, when the yarn is disconnected
between the yarn supplying part and the at least one winding
part in the yarn running direction, a part of the yarn which
is provided on the at least one winding part side in the
yarn running direction out from the package and guides the
part of the yarn to the joint formation part, wherein,
the controller decreases the counted number of joints when
the joint detection part detects a joint included in the
yarn pulled out from the package by the capturing part in
97
the test package making mode.
[Claim 7]
The yarn winding machine according to any one of claims 1
to 6, further comprising a capturing part which pulls, when
the yarn is disconnected between the yarn supplying part and
the at least one winding part in the yarn running direction,
a part of the yarn which is provided on the at least one
winding part side in the yarn running direction out from the
package and guides the part of the yarn to the joint
formation part, and
the controller is configured to determine a timing of
disconnecting the running yarn based on information
regarding pull-out length of the yarn pulled out from the
package by the capturing part in the test package making
mode.
[Claim 8]
The yarn winding machine according to any one of claims 1
to 7, wherein, the controller is able to change the
predetermined length during the making of the package in the
test package making mode.
[Claim 9]
The yarn winding machine according to any one of claims 1
to 8, further comprising an operation part operated by an
operator, wherein,
the controller restarts the winding operation only when the
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operation part is operated after completion of the joint
forming operation in the test package making mode.
[Claim 10]
The yarn winding machine according to any one of claims 1
to 9, wherein, the yarn supplying part is a spinning part
configured to produce a spun yarn as the yarn, the yarn
winding machine further comprising: a pulling part
configured to pull the yarn supplied from the yarn supplying
part out toward the downstream side in the yarn running
direction;
a yarn defect detection part provided between the spinning
part and the pulling part in the yarn running direction; and
a joint detection part provided between the pulling part and
the at least one winding part in the yarn running direction.
[Claim 11]
The yarn winding machine according to any one of claims 1
to 10, further comprising: plural winding parts; and
driving sources configured to independently drive the
respective winding parts.
[Claim 12]
The yarn winding machine according to any one of claims 1
to 11, further comprising an input part in which information
regarding the predetermined length is able to be input.
[Claim 13]
The yarn winding machine according to any one of claims 1
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to 12, wherein, the joint formation part includes:
a splicer configured to twist the another yarn end and the
one yarn end together by means of a compressed gas, the
another yarn end being provided on the yarn supplying part
side in the yarn running direction, the one yarn end being
provided on the winding part side in the yarn running
direction;
a piecer configured to entangle the fiber supplied from the
yarn supplying part in the one yarn end on the winding part
side, the one yarn end moving downward in the yarn running
direction; or
a knotter configured to connect the one yarn end on the
winding part side and the another yarn end on the yarn
supplying part side in the yarn running direction.
[Claim 14]
The yarn winding machine according to claim 13, wherein, the
controller is able to change joint quality settings
regarding the joint forming operation performed by the joint
formation part during the making of the package in the test
package making mode.
[Claim 15]
The yarn winding machine according to claim 14, wherein, the
joint formation part includes the splicer,
the splicer includes:
a first untwisting part configured to untwist a first yarn
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end provided on the yarn supplying part side in the yarn
running direction;
a second untwisting part configured to untwist a second yarn
end provided on the winding part side in the yarn running
direction;
a twisting part configured to twist the first yarn end and
the second yarn end together; and
a joint length adjustment part capable of changing length
of the joint, and
the controller is able to change, as the joint quality
settings, at least one of: length of time taken by untwisting
of the first yarn end; length of time taken by untwisting
of the second yarn end; length of time taken by entanglement
performed by the twisting part; and length of the joint.
[Claim 16]
The yarn winding machine according to claim 15, further
comprising a pressure adjustment part capable of changing
at least one of pressure of a first compressed gas, pressure
of a second compressed gas, and pressure of a third
compressed gas, wherein, the first untwisting part is
configured to untwist the first yarn end by means of the
first compressed gas,
the second untwisting part is configured to untwist the
second yarn end by means of the second compressed gas,
the twisting part is configured to twist the first yarn end
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and the second yarn end together by means of the third
compressed gas, and
the controller is able to change settings of the pressure
adjustment part as the joint quality settings.
[Claim 17]
The yarn winding machine according to claim 13, wherein, the
yarn supplying part includes a spinning part configured to
produce a spun yarn as the yarn,
the joint formation part includes the piecer, and
the piecer includes the spinning part and is configured to
perform the joint forming operation by entangling a fiber
supplied by the spinning part in the one yarn end provided
on the winding part side in the yarn running direction.
[Claim 18]
The yarn winding machine according to claim 17, wherein, the
spinning part is configured to produce the spun yarn by the
compressed gas, and
in the test package making mode, the controller is able to
change at least one of: pressure of the compressed gas;
length of each of the joints; and yarn feeding speed of the
yarn during the joint forming operation, as the joint
quality settings regarding the joint forming operation
performed by the joint formation part during the making of
the package.
[Claim 19]
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A yarn winding machine comprising: a yarn supplying part
capable of supplying a yarn; a winding part configured to
perform a winding operation of forming a package by winding
the yarn pulled out from the yarn supplying part onto a
bobbin; a yarn joining section configured to perform a yarn
joining operation of joining yarns divided between the yarn
supplying part and the winding part in a yarn running
direction,
the winding part including:
a cradle which rotatably supports the package;
a contact drum configured to rotate upon making contact with
the package supported by the cradle; and
a driving part capable of rotationally driving the package
or the contact drum in a forward rotational direction and a
reverse rotational direction,
the yarn joining section including:
a yarn joining device configured to join the yarns together;
and
a capturing part configured to guide one of the yarns which
is provided on the winding part side in the yarn running
direction to the yarn joining device,
the yarn winding machine further comprising: an operation
part operated by an operator; and
a controller,
when the yarn joining section is caused to perform the yarn
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joining and the winding operation is stopped until a
predetermined condition is satisfied while the yarn joining
operation is completed, the controller (i) being able to
execute yarn rejoining control of causing the yarn joining
section to perform the yarn joining operation again before
restart of the winding operation in a case where the
predetermined condition is satisfied and, in the yarn
rejoining control, (ii) causing the driving part to
rotationally drive the package or the contact drum in the
forward rotational direction before causing the capturing
part to capture one of the yarns and at the same time causing
the driving part to rotationally drive the package or the
contact drum in the reverse rotational direction.
[Claim 20]
The yarn winding machine according to claim 19, further
comprising a yarn detection part provided between the yarn
supplying part and the winding part in the yarn running
direction, wherein,
only when any of the yarns is not detected by the yarn
detection part, the controller executes the yarn rejoining
control before restarting the winding operation in a case
where the predetermined condition is satisfied.