JPH08127923A - Method for starting winding work of spinning machine after doffed - Google Patents

Abstract

PURPOSE: To provide a method for starting the winding work of the spinning machine after a doffing work, unnecessitating the change of seed yarn, even when the kind of the spun yarn is changed, because the seed yarn is not specified, and not causing problems such as the winding of defective yarn and the hooking of yarn on a part, etc., constituting the spinning machine. CONSTITUTION: In a spinning machine requiring seed yarn on the start of a spinning work, a full bobbin is doffed, and the spinning work is subsequently started with preliminarily prepared seed yarn c2. The newly spun yarn is wound up on a newly mounted empty bobbin 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for starting winding after spinning a doffing machine for restarting spinning after discharging a package which has been filled up.

[0002]

2. Description of the Related Art Conventionally, in a spinning machine which requires a seed yarn at the start of spinning, when a new empty bobbin is mounted after a full discharge, a so-called starter winder winds the seed yarn around the empty bobbin in advance. I had to wear a bobbin with this seed thread. At the start of spinning, the seed yarn wound on the bobbin is pulled out, spinning is started using this seed yarn, and the spun yarn connected to the seed yarn and spun continuously is wound with the seed yarn. There is known a method of starting winding after doffing of a spinning machine that is wound into a reel.

[0003]

In the method of starting winding after doffing of the conventional spinning machine described above, since the seed yarn is wound around the bobbin, it is necessary to select the seed yarn. There was a problem that the seed yarn had to be changed every time the type of yarn changed. Further, in the case of automatically transporting the bobbin from the starter winder to the spinning machine, there is a problem that the seed yarn is damaged during the transport, or the seed yarn hangs and is caught by a component forming the transport path.

The object of the present invention is to solve the problems of the above-described conventional method for starting winding after doffing of a spinning machine, and to enable reliable doffing work after doffing of a spinning machine. To provide a method for starting winding.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is a spinning machine that requires seed yarns at the start of spinning. After that, the newly spun yarn is attached to the newly installed empty bobbin to start winding, and the work carriage for doffing has the seed yarn. The work carriage guides the seed yarn to the spinning unit, and then, after the spinning is started, the newly spun yarn is attached to the newly mounted empty bobbin. The seed yarn used for starting spinning is removed by suction.

[0006]

EXAMPLES A method for starting winding of a spinning machine according to the present invention after doffing will be described below with reference to FIGS. 1 to 8. However, the present invention is not limited to this example as long as the gist of the present invention is not exceeded. It is not something that will be done.

1 to 4 which are side views of a doffing device to which the method for starting winding after doffing of a spinning machine according to the present invention is applied, and a schematic perspective view of a yarn scooping lever, a seed yarn gripping lever and the like. The operation sequence of the method of the present invention will be described with reference to FIG. 7. Before that, the doffing carriage, various members, and the like will be described with reference to FIG. 1, which shows a state immediately before the doffing operation. .

In FIG. 1, Ad sandwiches a wheel a1 mounted on a rail r1 provided on the bottom member of the machine stand F and a rail r2 provided on the machine stand F of the spinning machine. Is a doffing trolley having wheels a2 and a2 'arranged in the same direction, and when a package full signal of the package P of a predetermined spinning unit of the spinning machine is received, the package moves along the spinning machine and the package P is full. It is configured to stop at a doffing position of a predetermined spinning unit that is a tube.

A plurality of spinning units U are arranged in the spinning machine in the longitudinal direction. The spinning unit U has a spindle member u1 having a hollow spindle which can be separated and joined to each other, and a nozzle for generating a swirling air flow. A spinning nozzle composed of the member u2 is provided, and the top front roller u of the draft device is provided upstream of the nozzle member u2.
3 and a bottom side front roller u3 ′ are arranged. u4 is a delivery roller arranged downstream of the spindle member u1, and u5 is a delivery roller u.
It is a nip roller that can be moved toward and away from 4, and normally
The yarn y is formed by the delivery roller u4 and the nip roller u5.
And the yarn y is positively fed in the direction of the package P. At the time of doffing, the nip roller u5 is separated from the delivery roller u4 and the seed yarn is guided from the package to the pull-out spindle member u1 as described later. Is passed between the nip roller u5 and the delivery roller u4, and the passed thread is not fed out for a predetermined period. u6 is a driving roller that contacts the package P and drives the package P to rotate. Note that u7 is a slab catcher arranged in the spinning unit U.

Reference numeral B denotes an empty bobbin supplying device arranged on the doffing trolley Ad, and an empty bobbin which is placed and conveyed on an empty bobbin conveying conveyor u8 arranged at the rear part of the machine stand of the spinning machine. An empty bobbin supply arm b having a gutter-shaped gripping member b3 ′ for receiving the empty bobbin b1 from a box-shaped empty bobbin storage member b2 that accommodates a predetermined number of bobbins b1
3, the empty bobbin b1 is supplied to the bobbin holding device D from which the full package P has been removed. The empty bobbin supply arm b3 is configured to be rotatable about the pivot point b3 ″ from the empty bobbin holding position shown in FIG. 1 to the bobbin holding device D. The empty bobbin storage member b described above.
An end portion of the empty bobbin transporting conveyor u8 side is pivotally attached to a shaft a3 arranged on an appropriate frame of the doffing trolley Ad, and a lower end of the empty bobbin storage member b2 is a cam b4. An upper end of a rod b5 which is connected to the above and is vertically movable by rotation of a cam b4 is pivotally attached. Therefore, the empty bobbin storage member b2 moves the shaft a3 by the vertical movement of the rod b5.
It is configured so that it can be rotated about. Of course, the vertical movement of the empty bobbin storage member b2 is not limited to the above-mentioned means by the cam b4, the rod b5, etc., and the empty bobbin storage member b is attached to the shaft a3.
It can be performed by fixing one end of 2 and rotating the shaft a3 by a motor or the like, or by vertically moving the rod b5 by a cylinder or the like, and various means can be adopted.

From the state shown in FIG. 1, the rod b5
Is moved upward by the rotation of the cam b4 and the empty bobbin storage member b2 is rotated clockwise about the axis a3 to move the empty bobbin b1 housed in the empty bobbin storage member b2 upward. The empty bobbin b1 is clamped by the holding member b3 ′ of the empty bobbin supply arm b3. Then rod b
5 to move the empty bobbin storage member b2 to the position shown in FIG.
Return to the standby position shown in. By disposing an appropriate pushing member (not shown) on the doffing cart Ad, the empty bobbin b1 placed on the empty bobbin transporting conveyor u8 can be placed on the empty bobbin storage member b2. It is configured to be able to.

H is a seed yarn gripping lever arranged on the doffing trolley Ad, and an appropriate yarn from the seed yarn package C arranged on the doffing trolley Ad is provided at the tip of the seed yarn gripping lever H. A cutter h1 with a clamper for gripping the seed yarn c2 pulled out through the guide c1 is provided, and the seed yarn gripping lever H is configured to be horizontally rotatable about a vertical axis h2 as described later. Has been done.

S is a hollow yarn scooping lever disposed above a seed yarn gripping lever H rotatable about a horizontal axis s1 disposed on a doffing trolley Ad. At the tip of the scooping lever S, as shown in FIG.
The yarn guide plates s2 and s3, which have substantially V-shaped yarn guide recesses s2 'and s3' and are arranged in parallel at a predetermined interval, are attached, and as will be described later, the yarn guide plates are attached. s2, s
The seed yarn c2 can be scooped from below by 3 and the hollow yarn scooping lever S can be set at an appropriate time.
By connecting to a vacuum source (not shown), the seed yarn c2 or the spun yarn y can be sucked.

G is a parallel link g which is rotated by an appropriate drive source suspended on an appropriate frame of a doffing trolley Ad.
1 and g2 are yarn guide members attached to the lower ends of the yarn guide members G. The yarn guide member G has a yarn guide recess at the tip end thereof. Is provided, and the yarn guide plate g is guided by the yarn guide recess.
Cutter g5 that cuts the seed thread c2 inserted in g3
Is provided. The yarn guide member G is engaged with the yarn y that is gripped by the delivery roller u4 and the nip roller u5 and is fed in the package P direction, as shown in FIG. 1, except during the doffing operation. It is in a standby position where it does not fit, and a parallel link g
1, g2 is rotated clockwise in FIG. 1 by an appropriate drive source to move the yarn guide member G to the left, and the yarn guide provided at the tip of the yarn guide member G is guided. Board g
3, g4 are configured to be able to advance to the yarn traveling route.

M is a suction pipe lever disposed on the doffing trolley Ad, which is rotatable about the horizontal axis m1 from the vicinity of the driving roller u6 to a substantially vertical position shown in FIG. A flat suction mouth m2 having a horizontal slit having a length substantially equal to the length of the package P is attached to the tip of the suction tube lever M.

T is a transfer arm member which is rotatable about a horizontal axis t1 arranged on a doffing trolley Ad and has a clamper (not shown) for gripping a yarn arranged at its tip. As will be described later, the transfer arm member T grips the seed yarn c2 guided by the yarn guide member G and is gripped by the clamper by rotating clockwise about the horizontal axis t1. The leading end of the seed yarn c2 is conveyed near the exit of the yarn y of the spindle member u1.

N is an air sucker member provided with a cylinder n3 having a piston rod n2 to which an air sucker n1 is attached at the tip thereof. The air sucker member N is attached to an appropriate frame of a doffing trolley Ad. The parallel links n4 and n5 are attached to the lower ends of the parallel links n4 and n5 which are rotated by a suitable hanging drive source, and the parallel links n4 and n5 are rotated counterclockwise from the standby position shown in FIG. In addition, by operating the cylinder n3, the piston rod n2 to which the air sucker n1 is attached can be advanced or retracted.

Next, the operation sequence of the winding start method after the doffing of the spinning machine will be described with reference to FIGS.

As described above, in FIG. 1, the package P held by the cradle arm of the bobbin holding device D to be described later and in contact with the driving roller u6 becomes full, and the doffing trolley Ad performs the doffing operation. The state just before the start is shown. In this state, the seed thread gripping lever H, the thread scooping lever S, the thread guiding member G, the suction tube lever M, the transfer arm member T, and the air sucker member N arranged on the above-mentioned doffing trolley Ad are Each is in a standby position as shown in FIG.

When it is detected that the package P is full by a fixed length detecting member (not shown) or an inclined position of the cradle arm of the bobbin holding device D, the yarn y is cut at an appropriate position. At the same time, the supply of the sliver to the draft device is stopped, and the spun yarn y that is continuously spun is sucked and removed by an appropriate suction duct (not shown).

As shown in FIGS. 1 and 7, the seed yarn c2 wound around the seed yarn package C placed on the doffing trolley Ad is along the axis of the seed yarn package C. It is pulled out via a thread guide c1 arranged in front of the seed thread package C, and then guided in a substantially right angle direction by a thread guide c3 arranged on the side of the seed thread gripping lever H, in a substantially horizontal state. It is held by the cutter h1 with the clamper of the seed thread holding lever H. Then, as shown in FIG. 7A, at the standby position, the seed thread gripping lever H
Is located closer to the yarn guide c3 than the rotation loci of the yarn guide plates s2 and s3 of the yarn scooping lever S.

From the standby position of the seed thread gripping lever H shown in FIG. 7 (a), the seed thread gripping lever H is gripped by the cutter h1 with a clamper as shown in FIG. 7 (b). The vertical axis h is set so that the seed yarn c2 that is being crossed traverses the rotation trajectory of the yarn guide plates s2 and s3 of the yarn scooping lever S.
Rotate horizontally around 2. Then the horizontal axis s1
The yarn scooping lever S is rotated upwards about the center of the yarn, and is stretched in a substantially horizontal state between the cutter h1 with a clamper and the yarn guide c3 of the seed yarn gripping lever H which is horizontally rotated. The seed thread c2 is threaded into the thread guide recesses s2 ', s3'.
Engaging with the yarn guide plates s2, s3, and scooping by rotating the yarn scooping lever S, further pulling out from the seed yarn package C, and then moving the yarn scooping lever S upward. When the rotation is completed, the grasping of the seed yarn c2 by the cutter h1 with the clamper of the seed yarn grasping lever H is released. During the operation of the yarn scooping lever S up to this point, the yarn scooping lever S has no suction action.

Then, as shown in FIG. 2, the driving roller u is driven by a bobbin gripping device D described later.
6, the yarn scooping lever S is arranged so that the yarn guide plates s2, s3 engaging and gripping the seed yarn c2 are located between the package P and the driving roller u6 which are retracted by a predetermined distance from 6. Rotate.

Then, the parallel links g1 and g2 are rotated clockwise in FIG.
As shown in FIG. 5, the yarn guide member G is moved so that the yarn guide plates g3 and g4 arranged at the tip of the yarn guide member G advance into the yarn traveling path.

Next, as also shown in FIG. 3, the suction tube lever M having the suction mouth m2 attached to its tip is moved from the substantially vertical position shown by the chain double-dashed line in FIG. It is rotated counterclockwise about the horizontal axis m1 to approach the yarn guide plates s2, s3 of the seed yarn gripping lever H that engages and grips the seed yarn c2, and by the suction mouth m2 in the suction state. , The seed yarn c2 engaged and gripped by the yarn guide plates s2, s3 of the seed yarn gripping lever H is sucked.
After that, the suction tube lever M is rotated to a standby position in a substantially vertical position, as shown by the chain double-dashed line in FIG. By such rotation of the suction tube lever M to the standby position of the substantially vertical position, the seed thread c2 sucked and held by the suction mouth m2 of the suction tube lever M is the thread guide plate g3 of the thread guide member G. , G4.

Then, as shown in FIG. 4, the transfer arm member T is rotated clockwise about the horizontal axis t1 so that it is first guided by the yarn guide member G. The seed yarn c2 is gripped by a clamper (not shown) arranged at the tip of the transfer arm member T, and the yarn guide member G is used.
The seed yarn c2 is cut by the cutter g5 with a clamper, and the yarn on the suction mouth m2 side is removed by suction. After that, the transfer arm member T holding the seed yarn c2 by the clamper and the clamper holding the seed yarn c2 arranged at the tip of the transfer arm member T are separated from the nozzle member u2 by the spindle member u1. y
Rotate so that it is located near the exit of.

The yarn guide plate g3 of the yarn guide member G,
A specific structure of the transfer arm member T in which the clamper of the transfer arm member T is inserted between the g4 and the seed yarn c2 is gripped by the clamper is disclosed in Japanese Patent Application Laid-Open No. 6-173129 (Patent application No. 4-
The structure of the transfer arm member described in No. 325021) can be adopted. Further, the transfer arm member T having the cutter with the clamper arranged at the tip thereof is simply used without adopting the transfer arm member having the yarn finger capable of swinging disclosed in the above-mentioned publication. Then, the cutter with the clamper of the transfer arm member T is brought close to the lower end portion of the yarn guide plate g4 located below the yarn guide member G, and the yarn guide member G is guided by the cutter with the clamper of the transfer arm member T. It is also possible to cut and hold the seed yarn c2 that has been formed. If the seed yarn c2 held by the clamper of the transfer arm member T hangs down from the clamper for a long time, the seed yarn c2 will not be accurately inserted into the spindle member u1. It is preferable to shorten the yarn end of the extending seed yarn c2.

The clamper holding the seed yarn c2 arranged at the tip of the transfer arm member T as described above is separated from the nozzle member u2 by the spindle member u1.
After rotating the transfer arm member T so that it is located near the exit of the yarn y, or prior to such a rotating operation of the transfer arm member T, as shown in FIG. The air sucker n1 of the air sucker member N is arranged between the nozzle member u2 and the spindle member u1. This is because the air sucker member N is rotated from the substantially vertical state shown in FIG. 1 by a suitable drive source to the parallel links n4 and n5 counterclockwise, and the cylinder n3 is operated to operate the piston rod. n2
Of the air sucker n1 attached to the tip of the piston rod n2 by advancing the nozzle of the nozzle member u.
2 and the spindle member u1.

The nozzle member u2 and the spindle member u
The seed yarn c2 conveyed by the transfer arm member T is provided between the nozzle member u2 and the spindle member u1 near the outlet of the yarn y of the spindle member u1 separated from the separating / joining means of No. 1 and the nozzle member u2. The air sucker n1 of the arranged transfer arm member T is passed through the spindle member u1, and then the air sucker n1 of the transfer arm member T is retracted from between the nozzle member u2 and the spindle member u1, and the nozzle member u2 and the spindle member Regarding the operation of joining u1 and further supplying the sliver to the draft device to restart the spinning of the spinning unit U, the above-mentioned Japanese Patent Laid-Open No. 6-17
Since the operation is the same as that disclosed in the piecing device of the spinning machine of Japanese Patent No. 3129 (Japanese Patent Application No. 4-325021), detailed description will be omitted.

Seed yarn c2 inserted in the spindle member u1
When the fibers constituting the sliver supplied from the front rollers u3 and u3 'into the nozzle member u2 are wound around the tip of the delivery device by restarting the drafting device and spinning is resumed, substantially simultaneously with the delivery roller u4 and the nip. The seed yarn c2 is gripped by the roller u5 and sent out in the package P direction. At the same time, suction of the yarn scooping lever S is started. Then, the seed yarn c2 thus sent out or the yarn y connected to the seed yarn c2 and sent out subsequently to the seed yarn c2 is, as shown in FIG. The yarn scooping is located between the empty bobbin b1 which is conveyed by the empty bobbin supplying arm b3 of the bobbin supplying device B and is clamped by the cradle arm of the bobbin gripping device D and the driving roller u6, and which is in a suction state after the restart of spinning. The suction lever S is sucking. In this state, the yarn y spun by the spinning unit U and the seed yarn c2 drawn from the seed yarn package C are connected to each other and sucked by the yarn scooping lever S. Further, in this state, the seed yarn c2 side has no feeding action and there is resistance of the yarn guide c3 and the like, so that only the yarn y side which is continuously fed is attracted to the yarn scooping lever S. Become. Then, the seed yarn c2 extending to the spindle member u1 is attracted to the yarn scooping lever S for a short time after the start of spinning.

Then, as shown in FIG. 6, the yarn scooping lever S is rotated counterclockwise and
The bobbin holding device D is rotated in the direction of the rotating driving roller u6, the empty bobbin b1 held by the bobbin holding device D is brought into contact with the driving roller u6, and the empty bobbin b1 is rotationally driven. The yarn y is guided by a not-illustrated yarn pulling member to a notch (a yarn locking portion) provided in a bobbin holding portion which is rotating together with an empty bobbin b, which will be described later, and is engaged therewith to rotate the bobbin holding portion. Is guided to a cutter fixed to the cradle arm d1 and cut by the cutter. By this cutting, the yarn y side engaged with the notch is wound around the empty bobbin b, and the yarn y on the yarn scooping lever S side is wound on the yarn scooping lever S.
Is sucked. The seed thread c2 is still attracted to the thread scooping lever S.

After that, the yarn scooping lever S, which holds the seed yarn c2 by suction, is returned to the standby position as shown in FIG. 1, but the seed yarn gripping lever H has already been moved to the position shown in FIG. ), Since the yarn guide plates s2, s3 of the yarn scooping lever S have returned to the standby position on the side of the yarn guide c3 from the turning locus of the yarn scooping lever S, the yarn scooping lever S moves toward the standby position. The rotation of the seed thread c2 sucked and held by the thread scooping lever S is inserted into the cutter h1 with a clamper opened in the seed thread gripping lever H, and then the cutter h1 with a clamper is operated. , The seed yarn c2 is cut and grasped. On the other hand, the cutting end cut by the cutter with a clamper h1 has a thread scooping lever S
Will be sucked into. Thereafter, the yarn scooping lever S is further rotated counterclockwise to return to the standby position, and the suction operation of the yarn scooping lever S is stopped.

The doffing work is performed by a series of operations such as the seed yarn gripping lever H, the yarn scooping lever S, the yarn guiding member G, the suction tube lever M, the transfer arm member T, and the air sucker member N as described above. Ends, but then
Regarding an example of a bobbin holding device D for mounting an empty bobbin on the cradle arm from which the package P has been removed,
This will be described with reference to FIG. 8, which is a perspective view of the bobbin holding device D and the like.

D1 is one cradle arm extending substantially vertically at one end of a cylindrical portion d3 rotatably fitted to the horizontal axis d2, and d4 is at the other end of the cylindrical portion d3. The cradle base has a substantially C-shaped frame member d4 ′ that extends substantially vertically. An expansion cradle arm d5 having a side surface of a substantially V shape is inserted into a frame member d4 'of the cradle base d4, and a substantially vertical portion d5' of the expansion cradle arm d5 has a substantially intermediate portion. A horizontal axis d6 orthogonal to the longitudinal direction of the vertical portion d5 'is attached, and the horizontal axis d6 is attached to a hole formed in the frame member d4' of the cradle base d4 or a frame member d4 'of the cradle base d4. It is pivotally attached to a bearing or the like provided. Further, a spring member 7 such as a compression spring is arranged between the frame member d4 ′ above the horizontal axis d6 and the extended cradle arm d5. Therefore, the extended cradle arm d
The bobbin gripping part d8 arranged at the tip end of 5 is biased to rotate in the direction of the bobbin gripping part d9 rotatably supported by the tip end part of the cradle arm d1 arranged so as to oppose. Has been done. Further, a vertical locking plate d10 having a function to be described later is attached to a vertical side surface of the substantially horizontal portion d5 ″ of the extended cradle arm d5. A thread is attached to the bobbin holding portion d9. A notch d8 'for locking is provided, and a cutter d1' for cutting a yarn is fixed to the cradle arm d1 so as to be located between the cradle arm d1 and the bobbin holding portion d9.

Reference numeral d11 denotes a rotating lever that is rotated from a standby position in a substantially vertical state shown by a chain double-dashed line in FIG. 8 to an operating position in a substantially horizontal state. One end of the rotating lever d11 has: A horizontal shaft d13 supported by a suitable bearing d12 arranged on the doffing cart Ad is attached. The horizontal axis d13 is provided with two flanges d1 at appropriate intervals.
4, d14 'are attached, and the flanges d14, d1
A forked portion d16 ′ of a swing lever d16 that rotates about a horizontal axis d15 is fitted between 4 ′. Further, the end of the swing lever d16 on the opposite side of the forked part d16 ′ has a rod d reciprocally movable by a cylinder (not shown) or the like.
Seventeen are pivotally attached. Therefore, the swing lever d1 that reciprocates the rod d17 to rotate about the horizontal axis d15.
By swinging the bifurcated part d16 'of 6, the bearing d
The horizontal shaft d13 supported by 12 is reciprocated along the axis of the horizontal shaft d13 so that the rotating lever d11 can be reciprocated in the direction of the axis of the horizontal shaft d13.

Reference numeral d18 denotes a cam plate attached to the horizontal shaft d13 and having a protrusion lever d18 'at a predetermined position. The tip end of the protrusion lever d18' is a rod reciprocally movable by a cylinder (not shown) or the like. d19 is pivotally attached. Therefore, by reciprocally moving the rod d19 and rotating the cam plate d18 via the protrusion lever d18 ', the horizontal shaft d13 is rotated, and the rotating lever attached to the tip of the horizontal shaft d13. As described above, the d11 can be rotated between the standby position in the substantially vertical state shown by the chain double-dashed line in FIG. 8 and the operating position in the substantially horizontal state shown by the solid line. It is configured.

D20 is a horizontal roller disposed at the tip of the rotating lever d11. The horizontal roller d20 is
The rotary lever d11 is pivotally attached to a horizontal shaft attached to a vertical side wall d11 ′ on the side of the extended cradle arm d5. Further, d21 is a vertical roller pivotally attached to a vertical shaft attached to a horizontal portion d11 ″ provided on the extension cradle arm d5 side of the rotating lever d11. The horizontal roller d20 is a rotating lever d11. Is rotated from the standby position in the substantially vertical state to the operating position in the substantially horizontal state, the locking plate d10 disposed on the extended cradle arm d5 and the front surface of the locking plate d10 (in FIG. It abuts against the left side surface of the stop plate d10, and is configured to prevent the cradle arm d1 and the expansion cradle arm d5 from rotating counterclockwise in Fig. 8. Thus, the cradle arm d1 and the expansion cradle arm Since the rotation of d5 is blocked, the empty bobbin b1 conveyed by the empty bobbin supplying arm b3 of the empty bobbin supplying device B is moved to the bobbin of the cradle arm d1. Securely between the emission gripper d9 bobbin gripping portion d8 of the extended cradle arm d5, moreover, it can be accurately positioned.

Further, by moving the rotating lever d11 in the direction of the expansion cradle arm d5, the substantially horizontal portion d5 "of the expansion cradle arm d5 is moved in the same direction, and the expansion cradle arm d5 is moved about the horizontal axis d6. Then, the bobbin gripping portion d9 of the cradle arm d1 and the bobbin gripping portion d5 of the extended cradle arm d5 are rotated by rotating in the direction away from the cradle arm d1 against the elastic force of the spring member 7.
A space for inserting the empty bobbin b1 is provided between the two. Next, as described above, the empty bobbin b1 conveyed by the empty bobbin supplying arm b3 of the empty bobbin supplying device B is
It is arranged between the bobbin holding part d9 of the cradle arm d1 and the bobbin holding part d8 of the extended cradle arm d5.
Then, the rotation lever d11 is moved to the extension cradle arm d.
5 by moving in the direction opposite to 5, the substantially horizontal portion d5 ″ of the expansion cradle arm d5 is moved in the direction of the turning lever d11 by the elastic force of the spring member 7, and the expansion cradle arm d5 is moved along the horizontal axis d6. The empty bobbin b1 is gripped by the bobbin gripping part d9 of the cradle arm d1 and the bobbin gripping part d8 of the extended cradle arm d5 by moving in the direction of the cradle arm d1.

Various known bobbin gripping devices can be used as the bobbin gripping device provided with the cradle arm having a function of gripping an empty bobbin or removing the package. To remove the cradle arm from the cradle arm, or to rotate the cradle arm in the direction away from the driving roller, or to hold the empty bobbin on the cradle arm, rotate the cradle arm from the package removal position toward the driving roller. For this, various known means can be used.

[0040]

Since the present invention is constructed as described above, the seed yarn is not specified. Therefore, even if the type of yarn to be spun is changed, it is not necessary to change the seed yarn one by one. Moreover, there is no problem such as winding of a defensive yarn, and there is no problem that the yarn is caught on a component or the like constituting the spinning machine.

[Brief description of drawings]

FIG. 1 is a side view of a doffing apparatus to which the method of the present invention is applied, showing the operation sequence of a winding start method after doffing of a spinning machine of the present invention.

FIG. 2 is a side view of the doffing device similar to FIG. 1, showing the operation sequence subsequent to FIG.

FIG. 3 is a side view of the doffing device similar to that of FIG. 1, showing the operation sequence subsequent to that of FIG. 2;

FIG. 4 is a side view of the doffing device similar to FIG. 1, showing the sequence of operations following FIG.

5 is a side view of the doffing device similar to that of FIG. 1, showing the operation sequence subsequent to that of FIG. 4;

FIG. 6 is a side view of the doffing device similar to FIG. 1, showing the operation sequence subsequent to FIG. 5;

FIG. 7 is a schematic perspective view of a yarn scooping lever, a seed yarn gripping lever, and the like.

FIG. 8 is a perspective view of a bobbin holding device and the like.

[Explanation of symbols]

 Ad ・ ・ ・ ・ Drying dolly B ・ ・ ・ ・ ・ ・ Empty bobbin supply device C ・ ・ ・ ・ ・ ・ Seed yarn package D ・ ・ ・ ・ ・ ・ ・ ・ Bobbin gripping device G ・・ ・ ・ ・ ・ ・ ・ Thread guide member H ・ ・ ・ ・ ・ ・ Seed thread gripping lever M ・ ・ ・ ・ ・ ・ Suction tube lever N ・ ・ ・ ・ ・ ・ ・ ・ Air sucker member P ・・ ・ ・ ・ Package S ・ ・ ・ ・ ・ ・ ・ ・ Screw picking lever T ・ ・ ・ ・ ・ ・ Transfer arm member U ・ ・ ・ ・ ・ ・ Spinning unit

Claims (3)

[Claims] 1. A spinning machine that requires seed yarns to start spinning, starts spinning using a seed yarn prepared in advance after doffing, and then newly mounts the newly spun yarn. A method of starting winding after doffing of a spinning machine, characterized in that the winding is started by attaching the wound bobbin to the wound bobbin. 2. A work carriage for doffing has a seed yarn, which guides the seed yarn to a spinning unit, and then
The method for starting winding after doffing of a spinning machine according to claim 1, wherein the newly spun yarn is attached to a newly installed empty bobbin after the start of spinning. 3. The method of starting winding after doffing of a spinning machine according to claim 1 or 2, wherein after the spinning is started, the seed yarn used for starting the spinning is suctioned and removed.