Title of Invention

A REVOLVING TYPE YARN WINDING MACHINE

Abstract A multi-end revolving type automatic winding machine exhibiting high operationality, threading operability and space efficiency, and arranged such that two turret tables (3, 3') are disposed on the opposite sides of a yarn passage, rotational directions of a press roller (9) provided for one turret table (3) and a press roller (9') provided for the other turret table (3') are reversed, rotational directions of one turret table (3) and the other turret table (3') are reversed, and the center of each press roller (9, 9') touching a bobbin holder or a yarn being wound during winding of yarn is located between an imaginary line c connecting the centers of two bobbin holders (4,5) projecting from one turret table (3') and an imaginary line c' connecting the centers of two bobbin holders (4',5') projecting from the other turret table (3').
Full Text TECHNICAL FIELD
The present invention relates to a revolving type automatic yarn winding
machine. More specifically, the present invention relates to a revolving type
automatic yarn winding machine which comprises a turret table rotatably
mounted on a unit case, the turret table having a plurality of bobbin holders, for
inserting yarn winding bobbins thereon, rotatably mounted thereon, and
wherein yarn winding operation is switched to a bobbin installed on the other
bobbin holder when the yarn wound on one bobbin holder reaches a
predetermined amount.
BACKGROUND ART
When a yarn spun from spinnerets of a spinning machine is continuously
wound on a bobbin, a revolving type winding machine is generally used, which
machine comprises a turret table rotatably mounted on a unit case, two bobbin
holders rotatably mounted on the turret table for inserting yarn winding bobbins
thereonto, a movable frame movable in a vertical direction, a press roller
rotatably mounted on the movable frame, and a traverse device disposed
upstream the press roller seen along a yarn passage.
For example, in such a conventional yarn winding machine, two winding
machines are adjacently disposed, and yarns separated from the upstream feed
rollers are fed to the two winding machines.
As another prior art, Japanese published Patent Application No. 1-267270
discloses a winding machine wherein a plurality of turret tables are vertically
arranged on one machine frame.
Further, as another prior art, Japanese Published Patent
Application No. 2002-515388 discloses a winding machine
wherein two turret tables are vertically arranged on one machine frame, and thus
constructed unites are symmetrically arrange in a horizontal direction.
In yarn winding machines, in recent years, there is a tendency to apply
multi-ends, i.e. insertion of a plurality of bobbins onto one spindle, in order to
increase production and application of multi-ends has been done by combining
winding machines. In this case, it is required to increase the space efficiency per
production, to reduce the equipment cost, to increase threading operability, and
to enhance the prettiness of the shape of wound packages.
In order to meet with the requirements, in the conventional machine, since
two winding machines are disposed in parallel, the distance between yarns
entering into the two winding machines becomes large, and accordingly, the
angle a formed between two yarns leaving the feed rollers, increases. As a
result, there are problems that the contacting angle between a yarn and a yarn
guide G becomes large, that the frictional resistance increases, and that fluffs
occur in the yarn.
If the contacting angle between a yarn and a yearn guide G is made small
as a countermeasure for such problems, the positions of the feed rollers are lifted,
and there occurs a problem that operationality is degraded.
In a winding machine disclosed in Japanese Published Patent Application
No. 1-267270, the turret tables are vertically arranged, and therefore, the height
of the machine becomes high and the operationality is remarkably degraded.
Further, in a conventional winding machine disclosed in Japanese
Published Patent Application No. 2002-515388, upon first threading operation,
a plurality of yarns which are being sucked into a suction device are
threaded through fulcrum guide of traverse motion onto bobbins
inserted onto bobbin holders which
are in contact with press rollers disposed downstream the
traverse devices and are rotated, and accordingly, there is the
following problem.
The winding machines are arranged vertically and
symmetrically in a horizontal direction. Accordingly, upon
threading operation, in order to avoid interference between yarns
and the winding machines, it is necessary to perform threading
operation onto every winding machines from one located at the
upper stage or lower stage one by one while a plurality of yarns
are being sucked. As a result, time needed for threading
operation becomes long, the amount of waste yarn increases, and
efficiency is reduced.
When yarns are threaded onto the horizontally disposed
winding machines, since the press rollers and the bobbin holders
are in contact while they are arranged horizontally, it is
necessary for the yarns to be widely deflected upon threading
operation, and success ratio for threading is reduced.
Further, since the press rollers are horizontally
retracted as the amount of wound yarn increase, the width of a
winding machine becomes large, and space efficiency is remarkably
reduced.
Taking the drawbacks inherent to the prior art into
consideration, it is an object of the present invention to
provide a multi-end revolving type automatic yarn winding machine
which exhibits high operationality, high threading operability
and good space efficiency.
DISCLOSURE OF THE INVENTION
According to the present invention, the above-described
object is achieved by a revolving type winding machine comprising
two turret tables having at least two bobbin holders rotatably
mounted thereon, respectively, a press roller and a traverse
device are arranged corresponding to the bobbin holders upstream
the respective turret table, whereby a bobbin installed on one
bobbin holder is switched to a bobbin installed on the other
bobbin holder when the yarn wound on the bobbin reaches a
predetermined amount characterized in that the two turret tables
are disposed on the opposite sides of a yarn passage, rotational
directions of a press roller provided for one turret table and a
press roller provided for the other turret table are reversed,
rotational directions of the one turret table and the other
turret table are reversed, and the center of each press roller
touching a bobbin holder or a yarn being wound during winding of
yarn is located between an imaginary line c connecting the
centers of two bobbin holders projecting from the one turret
table and an imaginary liner, c'~\ connecting the centers of two
bobbin holders projecting from the other turret table.
In this case, it is preferred that an imaginary line
connecting the center of the press roller and the rotating center
of the bobbin holder forms an angle yS which is not larger than
45° relative to a vertical line.
Further, it is preferred that the imaginary lines c and
c' connecting the centers of the respective two bobbin holders
form "^ " shape at least upon start of yarn winding.
Furthermore, it is preferred that a threading device is
disposed correspondingly to each bobbin holder located at winding
position, the threading device is provided with a threading
guide, and during storage, the threading guide is located at a
storing position which is sandwiched by loci a and a' drawn by
outer surfaces of bobbins inserted onto the bobbin holders
projecting from the turret tables upon rotation of the turret
tables, while upon threading, a plurality of threading guides are
movable in such directions that they move away from each other
from the storing position to threading position which exceeds
contacting lines b and b' between the press rollers and outer
surfaces of rotating bobbins which are contacting with the press
rollers.
The press rollers may be movable so that distance between
the centers of the press rollers and the bobbin holders are expanded as the
amount of yarn wound on bobbins inserted onto the bobbin holders increase.
The turret tables having the bobbin holders projecting therefrom may be
movable so that distance between the centers of the bobbin holders and the press
rollers are expanded as the amount of yarn wound on bobbins inserted onto the
bobbin holders increase.
The press rollers may be linearly movable, it may be rotatably supported
at an end of an arm 31 or 31' may be pivoted.
Further, when symmetric winding machines 1 and 1' are disposed, and
threading and switching signals are simultaneously sent and the present
invention is applied, the object and unexpected advantages of the present
invention can be obtained.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The present invention will now be explained with reference to the
attached drawing wherein embodiments of the present invention are illustrated,
wherein:
Fig. 1 is an elevation of an embodiment of a revolving type automatic yarn
winding machine according to the present invention;
Fig. 2 is a side view of the embodiment upon initial threading operation;
Fig. 3 is a side view of the embodiment showing operation at the initial
threading operation subsequent to the condition illustrated in Fig. 2;
Fig. 4 is an elevation of the embodiment upon initial threading operation;
Fig. 5 is a view showing the condition wherein yearns are being wound
onto bobbins inserted onto bobbin holders in the embodiment;
Fig. 6 is an elevation showing the yarn switching condition;
Fig. 7 is a side view seen in a direction perpendicular
to bobbin holder upon switching;
Fig. 8 is a graph showing the positional relationship
between a bobbin holder and a press roller;
Figs. 9, 10 and 11 are elevations showing other
embodiments of the present invention; and
Fig. 12 is an elevation of a certain conventional device.
BEST MODE FOR CARRYING OUT THE INVENTION
In Figs. 1 and 2, a plurality of (eight in the present
embodiment) yarns Y continuously fed from spinnerets (not shown)
of a spinning machine are wrapped around feed rollers Rl and R2.
A yarn guide G for separating a plurality of yarns Y at a
predetermined distance is disposed at the exit of the feed roller
R2.
Fulcrum guides 12 and 12' of traverse motion are disposed
downstream the feed roller R2, so that passages of a plurality of
yarns Y are regulated by means of the fulcrum guides 12 and 12'
of traverse motion at a distance between the wound packages. The
fulcrum guides 12 and 12' of traverse motion are movable in an
axial direction along a device 11 for moving the fulcrum guides
12 and 12' of traverse motion, which device is horizontally
disposed downstream the feed roller R2.
The body of a unit case 1 of a winding machine W is of a
rectangular parallelpiped and has a base 2 extending to the
operational space near the front end, i.e., the left side in Fig.
2, disposed at the bottom thereof. The unit case 1 has circular
disc shaped turret tables 3 and 3' disposed at the front thereof
and mounted rotatable about central axes extending into a
horizontal direction, and they are rotated in opposite
directions, i.e., turret table 3 is rotated clockwise and the
turret tables 3' is rotated counter-clockwise, by means of
driving means such as motors (not shown).
The turret tables 3 and 3' have two bobbin holders 4, 5
and 4' , 5' , respectively, rotatably mounted thereon in a
direction perpendicular to the sheet on which Fig. 1 is drawn,
i.e., in the sheet direction of Fig. 2. The bobbin holders 4, 5
and 4' ,5' are connected to driving means (not shown),
respectively, and two bobbin holders 4 and 5 are rotated
clockwise and the other two bobbin holders 4' and 5' are rotated
counter-clockwise at a predetermined speed. Eight bobbins 6 may
be inserted onto the bobbin holders 4, 5 and 4' , 5' ,
respectively, of this embodiment.
Although in the present embodiment, spindle drive type
winding machine wherein bobbin holders are directly driven is
explained, the present invention may be carried out in a friction
drive type winding machine wherein a press roller is driven by
means of an electric motor and the press roller is brought into
contact with a bobbin holder so as to drive.
The unit case 1 has two slide rails (not shown)
vertically disposed inside thereof, a vertically movable frame 8
is moved in a vertical direction along the slide rails by means
of a fluid pressure cylinder (not shown).
The vertically movable frame 8 has press rollers 9 and 9' ,
which contact with the bobbins 6 inserted onto the bobbin holders
4, 5, 4' and 5' or yarn layers formed on the bobbins 6, and a
traverse device 10 mounted thereon, which device traverses the
yarns Y in axial direction of the bobbin 6. The press rollers 9
and 9' are supported on the vertically movable frame 8 in such a
manner that at least one is swingable independently relative to
the vertically movable frame 8.
The press rollers 9 and 9' are in contact with the
surfaces of the packages intending that the press roller 9 and 9'
feed yarns Y to the bobbins 6 and press the yarns so that the
prettiness of the shape of the wound packages is enhanced and
that the hardness of the wound packages is increased when the
yarns Y are wound onto the bobbins 6 inserted onto the bobbin
holders 4, 5, 4' and 5' .
In this embodiment, one traverse device 10 is disposed
between the two press roller 9 and 9' . The traverse device 10 is
provided with a cylindrical cam (not shown) which is driven by a
drive means (not shown), and traverse guides engaging with the
groove of the cam traverse the yarns Y to and fro in a direction
of axis of the bobbins 6 within the traverse range.
Though the traverse device 10 of a traverse cam type is
used in the embodiment, a traverse device, such as a traverse
device of a rotary blade type, may be used.
According to the present invention, the center of the
press rollers 9 and 9' touching bobbin holders 4, 5, 4' , and 5'
are so constructed that they are located between an imaginary
line c connecting the centers of two bobbin holders 4 and 5
projecting from one turret table 3 and an imaginary line c'
connecting the centers of two bobbin holders 4' and 5' projecting
from the other turret table 3' .
According to the present invention, the two turret tables
are disposed on the opposite sides of a yarn passage, rotational
directions of a press roller provided for one turret table and a
press roller provided for the other turret table are reversed,
and rotational directions of one turret table and the other
turret table are reversed. Accordingly, the width of a winding
machine can be small, and space efficiency increases.
Further, upon start of yarn switching operation, in other
words, upon start of rotation of the turret table, since the
turret table is accelerated, there is a tendency that the bobbin
holder is lifted by the acceleration. In order to overcome this
tendency, in the present invention, the press roller 9 and 9' are
located in a specific geometrical relationship with the turret
tables 3 and 3' , more specifically, the centers of the press
rollers 9 and 9' touching bobbin holders 4, 5, 4' , and 5' are so
constructed that they are located between an imaginary line c
connecting the centers of two bobbin holders 4 and 5 projecting
from one turret table 3 and an imaginary line c connecting the
centers of two bobbin holders 4' and 5' projecting from the Other
turret table 3' . According to this geometrical construction, the
bobbin holder is prevented from lifting the press roller due to
the acceleration at the start of rotation of the turret tables 3
and 3' , and the bobbin holders can rotate smoothly, and the
inward movement of the outer yarn layer of package upon start of
rotation of the turret tables and yarn package damage due to
excessive contacting pressure can be prevented from occurring,
and there is an unexpected advantage that the quality of yarn can
be enhanced.
Further, in addition to the above-described geometrical
construction, when an imaginary line connecting the rotating
center of the press roller 9 or 9' and the rotating center of the
bobbin holders 4 or 5 forms an angle & which is not larger than
45° relative to a vertical line d, the moving direction of the
press roller 9 or 9' can be almost vertical. Accordingly, the
width of a winding machine can be small, and space efficiency
increases. (See Fig. 8.)
Furthermore, it is so constructed that the imaginary
lines c and c' connecting the centers of the respective two
bobbin holders 4, 5 and 4' , 5' form "^ " shape at least upon
start of yarn winding. More specifically, the distance between
the bobbin holders 4 and 4' with empty bobbins is set smaller
than the distance L wherein they have fully wound packages
thereon, and at the same time, it is set larger than the distance
wherein the full packages just after switching operation do not
interfere with each other, and thus, the width of the winding
machine can be small.
In addition, as described above, the device 11 for moving
the fulcrum guides is disposed almost horizontally and in
parallel with the bobbin holders at a position above the traverse
device, and device 11 for moving the fulcrum guides is provided
with a plurality of fulcrum guides 12 and 12' corresponding to
the bobbins 6 and 6' inserted onto the bobbin holders 4, 5, 4'
and 5' .
The fulcrum guides 12 and 12' are so constructed that
they are movable in an axial direction along the bobbin holders
4, 5, 4' and 5' . Thus, the fulcrum guides 12 and 12' are fixed
at positions corresponding to the longitudinal centers of the
packages wound onto bobbins 6 inserted onto the bobbin holders 4,
5, 4' and 5' , during winding operation, while they are moved to
the front side of the bobbin holders, i.e., near the operating
space, when the yarns are threaded onto the bobbins.
Further, the unit case 1 has the lower ends 14a and 14' a
of the threading devices 14 and 14' pivoted at the lower central
portion thereof, and the threading devices 14 and 14' are pivotal
about the lower ends 14a and 14' a and are moved between the
returning position (Fig. 1) located below the central portion of
the unit case 1 and the operating position upon initial threading
(Fig. 4) by means of a cylinder (not shown).
More specifically, the threading device 14 or 14' is so
disposed that it corresponds to the respective bobbin holder 4 or
5 located at the winding position, and the threading device 14 or
14' is provided with an initial threading guides 15 or 15' at an
end opposite to the lower end. During storage, the threading
devices 14 and 14' are stored at the storing position (Fig. 1),
and during threading operation, they are movable from the storing
position to the threading position (Fig. 4). The storing
position is located at a position sandwiched by loci a and a'
drawn by outer surfaces of bobbins inserted onto the bobbin
holders projecting from the turret tables upon rotation of the
turret tables 3 and 3' . Contrary to this, the threading position
is located at a position which exceeds contacting lines b and b'
between the press rollers 9 and 9' and outer surfaces of rotating
bobbins 6 which are contacting with the press rollers 9 and 9' ,
and at the threading position, a plurality of threading guides 15
and 15' are movable in such directions that they move away from
each other.
The threading device 14 and 14' extend in a direction in
parallel with the sheet on which Fig. 2 is drawn and in parallel
with the bobbin holders 4, 5, 4' and 5' from the front surface of
the unit case 1 to a position near the operating space, and the
initial threading guides 15 and 15' are movable along the
threading device 14 and 14' by means of a fluid cylinder (not
shown).
Further, the unit case 1 has ends 18a and 18' a of L-cross
sectioned plates 18 and 18' pivoted at the upper central portion
thereof, and the plates 18 and 18' are pivotal about the ends 18a
and 18' a. The plates 18 and 18' are provided with yarn guides 16
and 16' which guide yarns to yarn catching grooves of the bobbins
6 and yarn passage limiting guides 17 and 17' which limit the
yarn passage so that the yarns Y do not drop from the end
surfaces of the wound packages of a predetermined amount.
The initial threading operation and the switching
operation of the fully wound package in this embodied machine
will now be explained.
Below the spinnerets of the spinning machine, while the
yarn Y are being sucked by a suction device SG, they are threaded
onto the feed rollers Rl and R2 and the yarn guide G.
Then, as illustrated in Fig. 2, the fulcrum guides 12 and
12' of traverse motion equipped with the device 11 for moving the
fulcrum guides are moved to the positions where the yarns are
threaded from positions corresponding to the longitudinally
central portion of the bobbins, and the yarns are threaded into
the fulcrum guides 12 and 12' .
Then, after the bobbins 6 and 6' inserted onto the bobbin
holders 4 and 4' are brought in contact with the press rollers 9
and 9' , the initial threading guides 15 and 15' are moved to the
initial threading positions illustrated in Fig. 2. Then, after
the yarns Y are threaded into the initial threading guides 15 and
15' , the suction device SG is positioned at the lower portion of
the operating space of the winding machine as illustrated in
Figs. 2 to 4.
Fig. 3 shows the condition just before the start of
initial threading operation, wherein the rotations of the bobbin
holders 4 and 4' and the press rollers 9 and 9' have been started
and have reached the predetermined rotating speed. As
illustrated in Fig. 3, the initial threading guides 15 and 15'
are moved to positions corresponding to the yarn catching grooves
formed on the bobbins 6 inserted onto the bobbin holders 4 and 4'
by means of a fluid cylinder (not shown).
Then, the threading devices 14 and 14' are swung by means
of the cylinder (not shown) to the condition illustrated in Fig.
4. More specifically, the threading devices 14 and 14' are swung
by means of the cylinder (not shown) to positions exceeding the
imaginary lines b and b' connecting the outer surfaces of the
press rollers 9 and 9' and the outer surfaces of the bobbins 6
and 6' , and the yarns deflecting at the initial threading guides
15 and 15' are engaged with the yarn catching grooves formed on
the bobbins 6 and 6' , and winding of the yarns onto the bobbins 6
and 6' is started.
Then, the threading devices 14 and 14' are returned to
positions outside the area defined by loci a and a' drawn by the
outer surfaces of bobbins inserted onto the bobbin holders so as
to prevent the outer surfaces of the bobbins inserted onto the
bobbin holders from contacting with the threading device 14 and
14' .
^Winding Operation)
The operation from the start of winding to the completion
of winding in this embodied machine will now be explained.
The bobbin holder 4 is rotated clockwise while the bobbin
holder 4' is rotated counter-clockwise, and the yarns are wound
onto bobbins 6 inserted onto the bobbin holders 4 and 4' .
According to the present invention, the distance L
between the centers of the bobbin holders 4 and 4' at the winding
start position is smaller than the outer diameter of fully wound
package. Accordingly, if the yarns are wound until completion of
winding while the bobbin holders are kept at the winding start
position, the full packages on the bobbin holder 4 and the full
packages on the bobbin holder 4' interfere with each other.
In order to obviate this problem, according to the
present invention, both the winding packages are moved away from
each other as the winding amount increases so that the wound
packages keep a predetermined distance therebetween. More
specifically, at the start of yarn winding, the yarns are wound
onto bobbins inserted onto the bobbin holders 4 and 4' while the
turret tables 3 and 3' are fixed at positions, and the press
rollers 9 and 9' are lifted together with the vertically movable
frame 8.
When the diameter of the wound package reaches a
predetermined amount, the turret tables 3 and 3' are moved in
such direction that the distances between the press rollers 9 and
9' and the bobbin holders 4 and 4' increase. More specifically,
after the vertically movable frame 8 lifts to a predetermined
height, the yarns are wound onto bobbins inserted onto the bobbin
holders 4 and 4' while the turret table 3 is rotating clockwise
at low speed and the turret table 3' is rotating counter-
clockwise at low speed.

The switching operation of fully wound packages in this
embodied machine will now be explained.
When the amount of yarn wound as described above reaches
a predetermined amount, while the turret table 3 is rotated
clockwise at high speed and the turret table 3' is rotated
counter-clockwise at high speed, the yarn guides 16 and 16' and
the yarn passage limiting guides 17 and 17' enter between the
bobbin holder 4 and the bobbin holder 5 and between the bobbin
holder 4' and the bobbin holder 5' , respectively, as will be
described later so that the yarns are engaged with the yarn
catching grooves formed on the bobbins 6 inserted onto the bobbin
holders and are cut by means of catching force of the yarn
catching grooves, and then, yarns 6 are wound onto the bobbins 6
inserted onto the bobbin holders 5 and 5' .
The operation, especially those of the yarn guides 16 and
16' and the yarn passage limiting guides 17 and 17' , will now be
explained with reference to Fig. 5. Fig. 5 shows the condition
just before effecting yarn switching after the amounts of yarn
wound onto bobbins 6 inserted onto the bobbin holders 4 and 4'
reach a predetermined amount.
Under this condition, the front ends of the plate 18 and
18' are lifted by means of a fluid cylinder (not shown), and the
yarn guides 16 and 16' and the yarn passage limiting guides 17
and 17' are positioned at the returning positions so that they so
not interfere with yarns.
By means of a drive device (not shown), the turret table
3 is rotated clockwise and the turret table 3' is rotated counter-
clockwise so that they are brought into a condition illustrated
in Fig. 6. In this condition, the front ends of the plate 18 and
18' are lowered (see Fig. 6) by means of a fluid cylinder (not
shown), and the yarn guides 16 and 16' and the yarn passage
limiting guides 17 and 17' begin to move from the returning
positions to the operating position.
Then, as illustrated in Fig. 7, while the yarn wound on
yarn package of a predetermined amount is being prevented from
dropping from wall end of the package by means of the yarn
passage limiting guides 17 or 17' , the yarn guides 16 or 16' are
moved to the left in Fig. 7 so that the yarn is engaged with yarn
catching groove of empty bobbin 6.
The full packages wound on the bobbins 6 inserted onto
the bobbin holders 4 and 4' are exhausted to the outside by means
of a doffing device (not shown) after the rotation of the bobbin
holders 4 and 4' stops.
The plate 18 and 18' , the yarn guides 16 and 16' , and the
yarn passage limiting guides 17 and 17' are returned from their
operating positions to their returning positions after a
predetermined operations, such as the threading onto the empty
bobbins 6 inserted onto the bobbin holders 5 and 5' , the exhaust
of fully wound packages wound onto bobbins 6 inserted onto the
bobbin holders 4 and 4' , and the donning of empty bobbins onto
the bobbin holders 4 and 4' , are completed.
As described above, since the two press rollers 9 and 9'
are supported on one vertically movable frame 8, and since they
are so constructed that at least one of the rollers 9 and 9' is
independently movable relative to the vertically movable frame 8,
the difference in diameters of the packages wound on both the
bobbin holders can be regulated.
Further, the threading device is disposed at the center
of the two turret tables 3 and 3' , and after the yarn wound on
the bobbin holder disposed on one turret table and the yarn wound
on the bobbin holder disposed on the other turret table are
succeedingly guided to the yarn guide, the threading device is
operated so that both the yarns are simultaneously threaded, and
accordingly, threading time can be shortened.
Although in the yarn winding machine shown in the
embodiment, a traverse device is disposed between two press
rollers, as illustrated in Figs. 9 to 11, traverse devices 30 and
30' for traversing yarns may be so disposed upstream the two
press rollers that they correspond to the press rollers,
respectively.
The traverse device may be a so called rotary blade
traverse device, wherein a plurality of rotary blades are rotated
in opposite directions.
The present invention provides a revolving type winding
mV^hine comprising two turret tables having at least two bobbin
holders rotatably mounted thereon, respectively, a press roller
and a traverse device are arranged corresponding to the bobbin
holders upstream the respective turret table, whereby a bobbin
installed on one bobbin holder is switched to a bobbin installed
on the other bobbin holder when the yarn wound on the bobbin
reaches a predetermined amount characterized in that the two
turret tables are disposed on the opposite sides of a yarn
passage, rotational directions of a press roller provided for one
turret table and a press roller provided for the other turret
table are reversed, rotational directions of the one turret table
and the other turret table are reversed, and the center of each
press roller touching a bobbin holder or a yarn being wound
during winding of yarn is located between an imaginary line c
connecting the centers of two bobbin holders projecting from the
one turret table and an imaginary line c' connecting the centers
of two bobbin holders projecting from the other turret table.
Accordingly, the width of a winding machine can be small, and
space efficiency increases.
Further, upon start of yarn switching operation, in other
words, upon start of rotation of the turret table, the bobbin
holder is prevented from lifting the press roller due to the
acceleration at the start of rotation of the turret tables, and
the bobbin holders can rotate smoothly, and the inward movement
of the outer yarn layer of package upon start of rotation of the
turret tables even at high turret speed and yarn package damage
due to excessive contacting pressure can be prevented from
occurring, and there is an unexpected advantage that the quality
of yarn can be enhanced.
Further, in addition to the above-described geometrical
construction, when an imaginary line connecting the rotating
center of the press roller 9 or 9' and the rotating center of the
bobbin holders 4 or 5 forms an angle & which is not larger than
45° relative to a vertical line d, the moving direction of the
press roller 9 or 9' can be almost vertical. Therefore, the
width of a winding machine can be small, and space efficiency
increases. Accordingly, increase of space efficiency per
production and reduction of equipment cost can be achieved.
Further, it is preferred that the imaginary lines c and c'
connecting the centers of the two bobbin holders 4 and 5, and 4'
and 5' , respectively, form " " shape at least upon start of yarn
winding. More specifically, the distance between the empty
bobbins 4 and 4' inserted onto the bobbin holders 4, 5, 4' and 5'
is set smaller than the distance having fully wound package, and
at the same time, it is set larger than the distance wherein the
fully wound packages just after switching operation do not
interfere with each other, and thus, the width of the winding
machine can be small.
Further, according to the present invention, the angle a
formed between two yarns leaving the feed rollers and entering
the winding machine can be not larger than 20° , and accordingly,
deflection of yarns can be small and the quality of yarns
increases.
WE CLAIM:
1. A revolving type winding machine comprising two turret tables having at least
two bobbin holders rotatably mounted thereon, respectively, a press roller and a
traverse device are arranged corresponding to the bobbin holders upstream the
respective turret table, whereby a bobbin installed on one bobbin holder is
switched to a bobbin installed on the other bobbin holder when the yarn wound on
the bobbin reaches a predetermined amount, characterized in that said two turret
tables (3,3') are disposed on the opposite sides of a yarn passage, rotational
directions of a press roller (9) provided for one turret table (3) and a press roller
(9') provided for the other turret table (3') are reversed, rotational directions of
said one turret table (3) and the other turret table (3') are reversed, and the center
of each press roller (9,9') touching a bobbin holder or a yarn being wound during
winding of yarn is located between an imaginary line (c ) passing through the
centers of the two bobbin holders (4,5) projecting from said one turret table (3) and
an imaginary line (c5) passing through the centers of two bobbin holders (4', 5')
projecting from the other turret table (3').
2. A revolving type winding machine according to claim 1, wherein an imaginary
line passing through the center of said press roller and the rotating center of said
bobbin holder forms an angle P which is not larger than 45° relative to a vertical
line.
3. A revolving type winding machine according to claim 1 or 2, wherein said
imaginary lines c and c' passing through the centers of the respective two bobbin
holders form "^"^ " shape at least upon start of yarn winding.
4. A revolving type winding machine according to any one of claims 1 to 3,
wherein a threading device is disposed correspondingly to each bobbin holder
located at winding position, said threading device is provided with a threading
guide, and during storage, said threading guide is located at a
storing position which is sandwiched by loci a and a' drawn by
outer surfaces of bobbins inserted onto said bobbin holders projecting from said
turret tables upon rotation of the turret tables, while upon threading, a plurality of
threading guides are movable in such directions that they move away from each
other from said storing position to threading position which exceeds contacting
lines b and b' between said press roller and outer surfaces of rotating bobbins
which are contacting with said press rollers.
5. A revolving type winding machine according to any one of claims 1 to 4,
wherein a traverse device for traversing yarns is disposed between said two press
rollers.
6. A revolving type winding machine according to any one of claims 1 to 4,
wherein a traverse device, corresponding to respective press roller, for traversing a
yarn is disposed upstream said two press rollers, wherein said traverse device has a
plurality of rotating blades, rotating in an opposite direction, so as to traverse a
yarn.
7. A revolving type winding machine according to any one of claims 1 to 6,
wherein said press rollers are movable so that distance between the centers of said
press rollers and said bobbin holders are expanded as the amount of yam wound on
bobbins inserted onto said bobbin holders increase.
8. A revolving type winding machine according to any one of claims 1 to 6,
wherein said turret tables having said holders projecting therefrom are movable so
that distance between the centers of said bobbin holders and said press rollers are
expanded as the amount of yarn wound on bobbins inserted onto said bobbin
holders increase.
9. A revolving type winding machine according to claim 7 or 8, wherein said press
rollers are linearly movable.
10. A revolving type winding machine according to claim 7 or 8, wherein said
press roller is rotatably supported at an end of an arm, and the other end of the arm
is pivoted.
11. A revolving type winding machine according to any one of claims 1 to 10,
wherein a feed roller is disposed upstream said winding machine.


A multi-end revolving type automatic winding machine exhibiting high
operationality, threading operability and space efficiency, and arranged such that
two turret tables (3, 3') are disposed on the opposite sides of a yarn passage,
rotational directions of a press roller (9) provided for one turret table (3) and a
press roller (9') provided for the other turret table (3') are reversed, rotational
directions of one turret table (3) and the other turret table (3') are reversed, and
the center of each press roller (9, 9') touching a bobbin holder or a yarn being
wound during winding of yarn is located between an imaginary line c connecting
the centers of two bobbin holders (4,5) projecting from one turret table (3') and
an imaginary line c' connecting the centers of two bobbin holders (4',5')
projecting from the other turret table (3').

Documents:

422-kolnp-2005-abstract.pdf

422-KOLNP-2005-ASSIGNMENT.1.3.pdf

422-kolnp-2005-assignment.pdf

422-kolnp-2005-claims.pdf

422-KOLNP-2005-CORRESPONDENCE.1.3.pdf

422-kolnp-2005-correspondence.pdf

422-kolnp-2005-description (complete).pdf

422-kolnp-2005-drawings.pdf

422-KOLNP-2005-EXAMINATION REPORT.1.3.pdf

422-kolnp-2005-examination report.pdf

422-KOLNP-2005-FORM 1.1.3.pdf

422-KOLNP-2005-FORM 18.1.3.pdf

422-KOLNP-2005-FORM 26.1.3.pdf

422-KOLNP-2005-FORM 3.1.3.pdf

422-KOLNP-2005-FORM 5.1.3.pdf

422-KOLNP-2005-FORM 6.1.3.pdf

422-kolnp-2005-form-1.pdf

422-kolnp-2005-form-18.pdf

422-kolnp-2005-form-2.pdf

422-kolnp-2005-form-26.pdf

422-kolnp-2005-form-3.pdf

422-kolnp-2005-form-5.pdf

422-kolnp-2005-form-6.pdf

422-KOLNP-2005-GPA.1.3.pdf

422-KOLNP-2005-GRANTED-ABSTRACT.pdf

422-KOLNP-2005-GRANTED-CLAIMS.pdf

422-KOLNP-2005-GRANTED-DESCRIPTION (COMPLETE).pdf

422-KOLNP-2005-GRANTED-DRAWINGS.pdf

422-kolnp-2005-others.pdf

422-kolnp-2005-reply to examination report.pdf

422-kolnp-2005-specification.pdf

422-kolnp-2005-translated copy of priority document.pdf

443-KOL-2004-GRANTED-CLAIMS.pdf

443-KOL-2004-GRANTED-DESCRIPTION (COMPLETE).pdf

443-KOL-2004-GRANTED-DRAWINGS.pdf

443-KOL-2004-GRANTED-FORM 1.pdf

443-KOL-2004-GRANTED-FORM 2.pdf

443-KOL-2004-GRANTED-LETTER PATENT.pdf

443-KOL-2004-GRANTED-SPECIFICATION.pdf

443-KOL-2004-OTHERS.1.3.pdf

443-KOL-2004-REPLY TO EXAMINATION REPORT.1.3.pdf


Patent Number 247511
Indian Patent Application Number 422/KOLNP/2005
PG Journal Number 16/2011
Publication Date 22-Apr-2011
Grant Date 13-Apr-2011
Date of Filing 15-Mar-2005
Name of Patentee TMT MACHINERY INC.
Applicant Address 6TH FL., OSAKA GREEN BLDG., 2-6-26 KITAHAMA CHUO-KU, OSAKA
Inventors:
# Inventor's Name Inventor's Address
1 SUGIOKA, TAKAMI C/O TSTM CO., LTD. 51, MINAMIYOSHIDA-CHO 2798, MATSUYAMA-SHI, EHIME 791-8042
2 YOSHIOKA, SEIJI C/O TSTM CO., LTD. 51, MINAMIYOSHIDA-CHO 2798, MATSUYAMA-SHI, EHIME 791-8042
3 ISHIMARU, NORIKI C/O TSTM CO., LTD. 51, MINAMIYOSHIDA-CHO 2798, MATSUYAMA-SHI, EHIME 791-8042
4 AKIYAMA, NORIHIDE C/O TSTM CO., LTD. 51, MINAMIYOSHIDA-CHO 2798, MATSUYAMA-SHI, EHIME 791-8042
5 FUKUISHI, MASACHIYO C/O TSTM CO., LTD. 51, MINAMIYOSHIDA-CHO 2798, MATSUYAMA-SHI, EHIME 791-8042
PCT International Classification Number B65H 54/52
PCT International Application Number PCT/JP2003/001180
PCT International Filing date 2003-02-05
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 2002-239860 2002-08-20 Japan