JP2580978B2 - Doffing method of winding device that performs step winding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically doffs a take-up device such as a pan winder in which a large number of spindle shafts for stacking and forming actual bobbins such as pans are stacked in a plurality of stages. On doffing methods for

[0002]

2. Description of the Related Art For example, in a pan winder, a package in which a filament yarn is wound in a cheese shape or the like is wound back into a package in a pan shape and supplied to a double twister for a filament. Then, in the double twister for filament, the yarn unwound from the pan is twisted twice to form a cheese-shaped package again.

[0003] Such a pan winder rewinds a large package having a large winding amount into a small pan having a small winding amount. If a structure is employed in which a single pan is formed by a single spider shaft, only the spindle shaft is formed. It becomes a machine with many imbalances. Therefore, there is a type in which bobbins are stacked in a plurality of stages such as upper and lower stages on a single spindle shaft to form a plurality of pans at once.

However, if it is attempted to automatically doff the upper and lower two-stage pan as an actual bobbin with respect to one spindle shaft, the upper stage pan can be extracted by inserting a scalable chuck into the bobbin. In addition, the lower pan does not only change the height position for doffing, but also cannot insert a scalable chuck because the spindle shaft protrudes from the bobbin. Needs to be changed.

[0005]

As described above, when the upper and lower two stages of the pan are wound around a single spindle shaft, the upper stage of the pan is operated in a doffing operation such as different chuck types and doffing positions. The dangling operation of the pan and the lower pan is different, and a complicated doffing device is required, which hinders the realization of automatic doffing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. It is an object of the present invention to form an actual bobbin such as a multi-stage pan around a single spindle shaft. The present invention provides a method of doffing a plurality of stacked real bobbins that can be easily automated in a simple doffing process.

[0007]

In order to solve the above-mentioned object, a doffing method of a winding device for carrying out step winding according to the present invention is characterized in that a bobbin is stacked on a spindle shaft projecting upward and a package is mounted on each bobbin. A bobbin holding device for holding a bobbin is raised and lowered with respect to a take-up device for forming a winding unit, and a bobbin holding tool for holding the bobbin is raised and lowered. The gist is to lift up to and doff.

[0008]

When the bobbin is provided with a mechanism for lifting the actual bobbins other than the upper stage on the spindle to the upper position, the actual bobbins stacked on the doffing device side at the same height using the same bobbin holder. Doffing operation can be performed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a main part of a winding device to which the doffing method of the present invention is applied, FIG. 2 is a side view of a main part of the winding device to which the doffing method of the present invention is applied, and FIG. FIG. 4 is a sectional view showing a bobbin holding mechanism of a spindle shaft, and FIG. 4 is a structural view of a transport unit.

In FIGS. 1 and 2, reference numeral 11 denotes a spindle portion of a piwan wander, 12 denotes a transport unit, and the illustrated example shows a doffed state from the spindle portion to the transport unit.

The spindle portion 11 is formed by projecting a spindle shaft 14 upwardly at a predetermined pitch P on a horizontal frame 13. The spindle shaft 14 is rotatable by a bearing (not shown), and rotates together with the tangential belt 15. As shown in FIG.
The bobbins 22 are inserted into upper and lower two stages, and the holding mechanisms 18 and 19 are inserted.
Stops the bobbin 22 from sliding in the rotational direction. And
The yarn is wound around each bobbin 22 by the rotation of the spindle shaft 14 to form pans (actual bobbins) 16 and 17 as winding packages. Here, as shown in FIG. 3, the holding mechanisms 18 and 19 include three arc-shaped pieces 20 and
The cam 21 has a triangular conical shape. On the inner periphery of the arcuate piece 20 is a projection 2 which engages with the tip of the cam 21.
0a is provided, and the cam 21 is moved together with the shaft 22 by an arrow a.
When rotated in the direction, the tip of the cam 21 pushes and spreads the protrusion 20a, and the piece 20 moves in the radial direction as shown in FIG. 3B, and holds the bobbin inner diameter (not shown).

The transport unit 12 is configured by projecting downwardly a chuck 26 as a bobbin holder at a predetermined pitch P on an elongated traveling plate 25. The chuck 26 has an expansion / contraction section 26a inserted into the bobbin 22 and a base 26b for operating the expansion / contraction section 26a. When the shaft tip of the base 26b or the expansion / contraction part 26a is pushed by the end of the bobbin 22, etc.
The enlargement / reduction unit 26b is of a type that alternately switches from reduction to enlargement or from enlargement to reduction.
6a is inserted into the bobbin 22, and the base 26a is
, The enlargement / reduction portion 26a is switched to the enlarged state, and the bobbin 22 can be lifted.

As shown in FIG. 4, the traveling plate 25 is provided with, for example, eight chucks 26, and by connecting a large number of traveling plates 25 with a connecting plate 27, a large number of pans 16, 17 can be transported. Rollers 28, 28 are provided on both sides of the traveling plate 25 so as to be freely rotatable.
8, 28 run on rails 29. In addition, the traveling plate 25
The driving rubber rollers 30, 30 are provided on the rail 29 at a constant interval on the side surface of the driving roller 25, and the traveling plate 25 runs between the driving rubber rollers 30, 30. And this rail 2
When the whole 9 is raised and lowered in the direction of arrow b, the chuck 26 can be inserted into the pans 16 and 17.

In FIG. 1, for convenience, the spindle shaft of the position A indicates the doffing state of the upper pan 17, and the spindle shaft of the position B indicates the doffing state of the lower pan 18. In order to doff the upper pans 17 at the A position at the same time, the transport unit 12 is lowered from the state shown in the figure, and the expansion / contraction section 26a is inserted into the bobbin 22. And
The base 26a is pressed against the upper end of the bobbin 22 to
When “a” is enlarged and the transport unit 12 is raised, the upper pan 17 is doffed all at once. At this time, spindle shaft 1
The upper end of 4 is only in the middle of bobbin 22 and chuck 2
No interference with 6. However, the remaining lower pan 18 remains with the spindle shaft 14 protruding from the bobbin 22, and the chuck 26 cannot be inserted.

For this purpose, the lower pan 16 is lifted to a position where the upper pan 17 is located, as in the B position, by the doffing assisting device (bobbin elevating means) 10 described in detail below. Then, the transport unit 12 can doff in exactly the same process as the upper pan 17 of the A position.

The doffing assisting device 10 will be described with reference to FIGS. The doffing assisting device 10 includes a bobbin 2
A U-shaped notch 31, which is provided at the end of the second and is equally spaced at 180 ° and is open at the lower end, an openable / closable claw member 32 that engages with the notch 31, and a plurality of spindles mounted with the claw 32 member Lift table 3 provided along axis 14
3 and a link mechanism 34 as elevating means for elevating and lowering the lift table 33.

The lift table 33 includes a side frame 35.
It is laid horizontally on a slide body 37 running along a slide bar 36 attached inside, and can slide up and down while maintaining a parallel posture. The link mechanism 34 includes a push-pull bar 38 provided between the side frames 35.
A bracket 39 is attached to the fulcrum shaft 4 of the lift table 33.
A first link 42 is provided between the fulcrum shaft 41 and the fulcrum shaft 41 of the metal fitting 39, and a second link 46 is provided between the fulcrum shaft 43 in the middle of the first link 41 and the fulcrum shaft 45 of the extension 44 of the fixed horizontal frame 13. Is provided. When the bar 38 is pushed to the solid line position by the pushing device 46, the lift table 33 is at the lower limit position of the solid line. When the pushing device 47 is released and the bar 38 is pulled in by the spring 47, the first link 4
The second link 46 and the second link 46 are in a standing state, and the lift table 33 is at the upper limit position indicated by the two-dot chain line.

The claw member 32 attached to the lift table 33 has a pair of right and left symmetrical claws 51, 51 on a shaft 52.
The pin 54 of the distal end is biased in the closing direction via a helical spring 53 so as to be pivotally supported. The downward bent portions of the claws 51, 51 jointly form a U-shaped projection 55. The fixed horizontal frame 13 has two rollers 56 between which the U-shaped protrusion 55 is sandwiched.
Is fixedly provided. When the protrusion 55 is sandwiched between the rollers 56, 56, the claws 51, 51
Is open. The lift table 33 is raised, and the protrusion 55
Is separated from the rollers 56, 56, the claws 51, 51 are about to be closed by the urging force of the helical spring 53, and the pin 54 at the tip end is fitted into the notch 31 to be engaged. If the spindle 54 is slowly rotated in the reverse direction so that the pin 54 engages the notch 31, the holding mechanism in FIG. 3 is loosened, and when the pin 54 is fitted in the notch 31, the spindle shaft 14 is Spin idle. Then, as the lift table 33 rises, the lower pan 16 is lifted, and stops at the height where the upper pan 17 was located.

Next, a doffing method using the doffing assisting device 10 and the transport unit 12 will be described with reference to FIG. The bar 38 of the link mechanism 34 is normally pushed by the urging force of the spring 47 when the pushing device 47 is released, the lift table 33 is at the solid line position, and the claw member 32
Is open and the pan 1 due to the rotation of the spindle shaft 14
There is no hindrance in the formation of 6, 17 windings. When the pans 16 and 17 are wound, the spindle shaft 14 stops. Then, the transport unit 26 waiting at the position shown in the figure moves down and the chuck 26 enters the bobbin 22 of the upper pan 17 in the state of the A position, and the bobbin 2 of the upper pan 17
2 is gripped from the inside. At this time, if necessary, the spindle shaft 14 is reversely rotated by the reverse running of the tangential belt 15, and the holding mechanism 19 is loosened. Then, the transport unit 26 rises to doff the upper pan 17 all at once.

After the transport unit 26 transports the upper pan 17, the empty transport unit 26 has traveled to the position shown in the figure. By that time, the push / pull device 47 has retracted the bar 38, and the link mechanism 34 causes the lift table 33 to start rising from the solid line position shown. At the same time, the spindle shaft 14 is slowly reversely rotated. Eventually, the claw member 5
The U-shaped projections 55 are separated from the rollers 56 and 56, the pawl members 51 and 51 are closed by the urging force of the helical spring 53, and the pin 54 at the tip contacts the surface of the bobbin 22. Since the bobbin 22 is rotating together with the spindle shaft 14, the pin 54 is engaged with the notch 31. Then, as the lift table 33 is lifted, the lower pan 16 is lifted, and the upper pan 17 as illustrated in the B position.
The lower pan 16 is located at the position where the position is located. Then, the transport unit 12 performs simultaneous doffing of the lower pan 16 in the same procedure as described above. When the doffing assisting device 10 is provided on the winder side, the upper and lower pans 16 and 17 can be doffed while the operation of the transport unit is exactly the same.

The lifting means of the doffing assisting device 10 described above is not limited to the link mechanism, but may be lifted and lowered by a pneumatic cylinder. Further, the opening / closing mechanism for engaging the claw member with the notch of the bobbin is not limited to the mechanism linked to the lifting and lowering of the lift table 33, but may be a mechanism for opening and closing with a separate miniature cylinder.

Further, the lifting means of the doffing assisting device 10 can be used not only for doffing an actual bobbin but also for mounting an empty bobbin. The transport unit 12 transports the empty bobbin with the chuck 26, and travels right above the spindle shaft 14. At this time, the doffing assisting device 10 is in the raised position,
Is lowered, the lower end of the empty bobbin hits the claw 51, and the chuck 26 is pressed and contracted to release the empty bobbin. Then, the doffing assist device 10 descends, and the empty bobbin is settled at the lower position of the spindle 14. Next, when the transport unit 12 chucks the next empty bobbin and travels just above the spindle shaft 14 and descends, the upper empty bobbin hits the lower empty bobbin, and the chuck 26 is pressed down to reduce the empty bobbin. When it is released, it becomes the upper predetermined position. When mounting the upper and lower bobbins, unlike the actual bobbin, the spindle shaft 14
No rotation is required. In this way, the upper and lower empty bobbins can be mounted while the operation of the transport unit is exactly the same.

Further, the entirety of a pan winder to which the doffing method using the above-described doffing apparatus is applied will be described with reference to FIG. In the illustrated pan winder 1, each weight is disposed back to back, and two yarn supply packages 60, 61 are provided for each weight so as to be shifted in the depth direction of the machine stand 62. The yarns unwound from the yarn supply packages 60 and 61 are tensor 63 and
The upper and lower thread guides 66 and 67 of the traverser 65
Through the upper and lower pans 16 and 17. Since the spindle portion 11 described with reference to FIG. 1 is rotating at a high speed, and the traverser 65 in FIG. 5 is reciprocating between the sections L gradually narrowing, the upper and lower pans 16 and 17 are formed by winding. A slide guide 68 is provided on the side frame 35,
The slide body 6 which moves up and down along the slide guide 68
9 is provided with a rail 29 shown in FIG. Then, the right and left rails 29 and 29 are raised and lowered synchronously by the hoisting device 70 in FIG. 5, and the height at which the chuck 26 can doff the upper pan 17 and the rails 29 and 29 are connected to the fixed circulation rail 3. Switching between heights is possible. After doffing, the transport unit 12 (see FIG. 4) is transported along the circulation rail 3.

FIG. 6 is a traveling line diagram of the transport unit by the circulation rail 3 described above. In FIG. 6, 1 is a pan winder, 2 is a double twister, both of which are shown in FIG.
Are connected by a circulating rail 3 on which a transport unit like this travels. Reference numeral 29 denotes a vertically movable rail shown in FIG.
Is a rail that can move up and down with respect to the double twister 2. The circulation rail 3 has rails 4, 5, and 6 for holding the transport unit. A transport unit for attaching and detaching a tensor mounted on the spindle of the double twister 2 is stopped on the rail 4, and a transport unit having an empty chuck as shown in FIG. 4 is stopped on the rail 5;
On the rail 6, a transport unit having a hanger for the package up the double twister 2 is stopped.

When the package wound up by the double twister 2 reaches the doffing time, the transport unit of the rail 4 enters the elevating rail 71 and returns to the original rail 4 while holding the spindle tensor. Next, the transport unit from the rail 6 holds the paper tube and reaches the elevating rail 71, and the full tube and the paper tube are automatically or manually exchanged for the doffing of the double twister 2. Then, the transport unit holding the tensor of the rail 4 enters the elevating rail 71 and mounts the tensor.

The transport unit having an empty chuck of the rail 5 enters the elevating rail 71 of the double twister 2 to hold an empty pan (bobbin) and waits at the entrance of the pan winder 1. A transport unit having an empty chuck is included in the rails 29, 29 of the pan winder 1, and doffs the upper and lower pans in the procedure described with reference to FIG. The transport unit holding the pan enters the elevating rail 71 and transfers the pan to the double twister 2. Then, a transport unit for holding an empty pan (bobbin) enters the rails 29, 29 of the pan winder 1 and inserts the empty pan into the spindle shaft 14 in FIG. In this way, when the pan winder and the double twister are connected by the rail in which the transport unit circulates, the pan winder is doffed,
The pan feed to the double twister can be performed automatically.

The doffing method using the doffing apparatus shown in FIGS. 1 and 2 is not limited to a pan winder, and various methods can be used as long as it has a winder for winding a plurality of actual bobbins around a spindle shaft in a stacked state. Applicable to spinning machines.

[0028]

The doffing method of the take-up device for stepwise winding according to the present invention is characterized in that doffing is performed by lifting an actual bobbin other than the upper stage on the spindle shaft to an upper position. Since the apparatus side can perform the doffing operation of the stacked real bobbins using the same bobbin holding device at the same height position, the transport in which the chuck, which is the bobbin holding device inserted into the bobbin, is projected downward. There is an effect that automatic doffing can be performed by a simple doffing device in which the unit can be set up and down freely.

[Brief description of the drawings]

FIG. 1 is a front view of an apparatus to which a doffing method of the present invention is applied.

FIG. 2 is a side view of an apparatus to which the doffing method of the present invention is applied.

FIG. 3 is a sectional view of a spindle shaft holding mechanism.

FIG. 4 is a structural diagram of a transport unit.

FIG. 5 is a side view of the pan winder.

FIG. 6 is a traveling line diagram of the transport unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pan winder 10 Doffing assisting device 11 Spindle part 12 Transport unit 14 Spindle shaft 16, 17 Pan (actual bobbin)

Claims (1)

(57) [Claims] 1. A bobbin is stacked on a spindle shaft projecting upward and a package is wound around each bobbin. A transport unit having a bobbin holding tool for holding a bobbin projects upward and downward. A doffing method for a winding device for performing a step winding, wherein doffing is performed by lifting an actual bobbin other than the upper stage on the spindle shaft to an upper position.