JPH0781845A - Doffing method of take-up motion making stepped winding - Google Patents

Abstract

PURPOSE:To provide a method of doffing bobbins stacked in a plurality of steps, which allows easy automation through a simple doffing process even if the plural steps of actual bobbins like pirns are wound on one spindle. CONSTITUTION:In a method of doffing in which a conveyor unit 12 from which a bobbin holder 26 for holding bobbins 22 is projected downwards is moved up and down with respect to a take-up motion which stacks the bobbins 22 on an upwardly projected spindle 14 and winds packages 16, 17 around each bobbin 22, the actual bobbins on the spindle shaft 14, other than those on the upper stages, are raised to an upper-stage position for doffing, and doffing is performed by the same action of the conveyor unit 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically performs doffing for a winding device such as a pan winder in which a large number of spindle shafts for stacking and forming a plurality of real bobbins such as pans are formed to project upward. For doffing method for.

[0002]

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

Such a pan winder is for rewinding a large package with a large winding amount into a small pan with a small winding amount. It becomes a machine with a lot of imbalances. Therefore, there is a method in which a plurality of bobbins are stacked on one spindle shaft in a two-stage structure to form a plurality of buns at one time.

However, if the upper and lower tiers of the upper and lower tiers as the actual bobbin for one spindle shaft are to be automatically doffed, the upper tier can be pulled out by inserting an expandable / contractible chuck into the bobbin. , The lower part of the pan does not only change the height position for doffing, but also the spindle shaft protrudes from the bobbin, so a expandable and contractible chuck cannot be inserted. It is necessary to change the form of.

[0005]

As described above, when the upper and lower tiers of the pan are wound around the one spindle shaft, the doffing operation of the upper tier is different due to different chuck types and doffing positions. There was a problem that the doffing operation of the lower pan was different and a complicated doffing device was required, which hindered the realization of automatic doffing.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to form an actual bobbin such as a plurality of stages of a bobbin around one spindle shaft. Even in the case of doing so, it is possible to provide a doffing method for a plurality of stacked real bobbins which is easy to automate with a simple doffing process.

[0007]

In order to solve the above-mentioned problems, a doffing method of a winding device for carrying out step winding of the present invention is a bobbin stacked on a spindle shaft projecting upward and packaged on each bobbin. A bobbin holding tool for holding the bobbin, the doffing method is performed by moving up and down a conveying unit provided downwardly projecting, and an actual bobbin other than the upper stage on the spindle shaft is located at the upper stage position. The main idea is to lift up to and do the doffing.

[0008]

When a mechanism for lifting the actual bobbin other than the upper stage on the spindle shaft to the upper stage position is provided on the winding device side, the doffing device side stacks the actual bobbin using the same bobbin holder at the same height position. You will be able to do the doffing operation.

[0009]

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

In FIG. 1 and FIG. 2, 11 is a spindle part of the wandering tool, 12 is a carrying unit, and the illustrated example shows a doffing state from the spindle part to the carrying unit.

The spindle portion 11 comprises a horizontal frame 13 and a spindle shaft 14 projecting upward at a predetermined pitch P. The spindle shaft 14 is rotatable by a bearing (not shown), and is in contact with the tangential belt 15 to rotate all at once. On the spindle shaft 14, as shown in the figure,
The bobbins 22 are inserted in the upper and lower two stages, and the holding mechanisms 18, 19
Prevents the bobbin 22 from slipping in the rotation direction. And
The yarn is wound on each bobbin 22 by the rotation of the spindle shaft 14, and the buns (actual bobbins) 16 and 17 as a winding package are formed. Here, as shown in FIG. 3, the holding mechanisms 18 and 19 include three arc-shaped pieces 20,
The cam 21 has a triangular rice ball shape. A protrusion 2 that engages with the tip of the cam 21 is provided on the inner circumference of the arc-shaped piece 20.
0a is provided, and the cam 21 and the shaft 22 together with the arrow a
When rotated in the direction, the tip of the cam 21 spreads the protrusion 20a, and the piece 20 moves in the radial direction as shown in FIG. 3B to hold the bobbin inner diameter not shown.

The transport unit 12 comprises a slender traveling plate 25 having chucks 26 as bobbin holders which project downward at predetermined pitches P. The chuck 26 has an expansion / contraction part 26a inserted into the bobbin 22 and a base part 26b for operating the expansion / contraction part 26a. When the shaft tip of the base portion 26b or the expansion / contraction portion 26a is pushed by the end of the bobbin 22 or the like,
The enlargement / reduction unit 26b is of a type that alternately switches from reduction to enlargement or enlargement to reduction, and the enlargement / reduction unit 2 in the reduced state.
6a is inserted into the bobbin 22 and the base portion 26a is
When pushed at the end of, the expansion / contraction part 26a switches to the expanded state, and the bobbin 22 can be lifted.

As shown in FIG. 4, the traveling plate 25 has, for example, eight chucks 26 projecting from it. 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 rotatably provided on both sides of the traveling plate 25.
8 and 28 run in the rail 29. In addition, the traveling plate 25
Driving rubber rollers 30, 30 are provided on the rails 29 at regular intervals on the side surface of the traveling plate 25, and the traveling plate 25 travels while being sandwiched by the driving rubber rollers 30, 30. And this rail 2
When the whole 9 is moved up and down 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 A povition shows the doffing state of the upper pan 17, and the spindle shaft of the B position shows the doffing state of the lower pan 18. In order to doff the upper pans 17 in the A position all at once, the transport unit 12 is lowered from the illustrated state, and the expansion / contraction part 26a is inserted into the bobbin 22. And
The base portion 26a is pressed against the upper end of the bobbin 22, and the expansion / contraction portion 26
When a is enlarged and the transport unit 12 is raised, the upper pans 17 are doffed all at once. At this time, spindle shaft 1
The upper end of 4 is only up to the middle of bobbin 22, and chuck 2
Does not interfere 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.

Therefore, the doffing auxiliary device (bobbin raising / lowering device) 10, which will be described in detail below, lifts the lower pan 16 to the position where the upper pan 17 was, like the B position. Then, the transport unit 12 can doffing 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. 1 and 2. This doffing assisting device 10 is a bobbin 2
A U-shaped notch 31 is provided at the end of 2 and is opened at the lower end in a 180 ° equidistant arrangement, an openable / closable claw member 32 that engages with this notch 31, and this claw 32 member are attached to a large number of spindles. Lift table 3 provided along the shaft 14
3 and a link mechanism 34 as an elevating means for elevating and lowering the lift table 33 are the main parts.

The lift table 33 is a side frame 35.
It is horizontally mounted on a slide body 37 that runs 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.
Attach the metal fitting 39 to the fulcrum shaft 4 of the lift table 33.
0 and the fulcrum shaft 41 of the metal fitting 39, the first link 42 is provided, and the second link 46 is further provided between the fulcrum shaft 43 in the middle of the first link 41 and the fulcrum shaft 45 of the extension portion 44 of the fixed horizontal frame 13. Is provided. When the pushing device 46 pushes the bar 38 to the position indicated by the solid line, the lift table 33 reaches the lower limit position indicated by 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
2 and the second link 46 are in a standing state, and the lift table 33 is at the upper limit position of the chain double-dashed line.

The claw member 32 attached to the lift table 33 has a pair of left and right symmetrically shaped claws 51, 51.
The pin 54 attached to the tip end is axially supported by a spiral spring 53 in a state of being biased in a closing direction. The downwardly bent portions of the claws 51, 51 jointly form a U-shaped projection 55. The fixed horizontal frame 13 has two rollers 56 on which the U-shaped projection 55 is sandwiched.
A guide 57 that pivotally supports is fixedly installed. When the protrusion 55 is sandwiched between the rollers 56, 56, the claws 51, 51
Is open. The lift table 33 rises and the projection 55
When is separated from the rollers 56, 56, the pawls 51, 51 tend to close due to the urging force of the spiral spring 53, and the pin 54 attached to the tip end is fitted into the notch 31 to be in the engaged state. When the spindle 54 is slowly rotated in the reverse direction in order for the pin 54 to engage the notch 31, the holding mechanism of FIG. 3 is loosened, and when the pin 54 fits 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 stopped at the height where the upper pan 17 was located.

Next, a doffing method using the doffing auxiliary device 10 and the transport unit 12 described above will be described with reference to FIG. Normally, the bar 38 of the link mechanism 34 is pushed in by the urging force of the spring 47 with the pushing device 47 in the released state, the lift table 33 is in the solid line position, and the claw member 32 is present.
Is open, and the pan 1 due to the rotation of the spindle shaft 14
There is no hindrance to the winding formation of 6,17. When the pans 16 and 17 are wound and formed, the spindle shaft 14 stops. Then, the transport unit 26 standing by at the position shown in the figure descends and the chuck 26 enters the bobbin 22 of the upper pan 17 in the A position, and the bobbin 2 of the upper pan 17 moves.
Hold 2 from the inside. At this time, if necessary, the spindle shaft 14 is reversely rotated by the reverse traveling of the tangential belt 15 to loosen the holding mechanism 19. Then, the transport unit 26 ascends and lifts the upper pan 17 all at once.

After the transport unit 26 has transported the upper pan 17, the empty transport unit 26 is traveling to the position shown in the figure. By then, the push-pull device 47 retracts 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 rotated in the reverse direction. Eventually, the claw member 5
The U-shaped protrusions 55 of 1, 51 are separated from the rollers 56, 56, the pawl members 51, 51 are closed by the urging force of the spiral spring 53, and the pin 54 at the tip comes into contact with the surface of the bobbin 22. Since the bobbin 22 is rotating together with the spindle shaft 14, the pin 54 fits into the notch 31 and engages with it. Then, as the lift table 33 rises, the lower pan 16 is lifted, and the upper pan 17 as shown in the B position is shown.
The lower pan 16 will be located at the position where there was. Then, the transport unit 12 carries out simultaneous doffing of the lower pan 16 in the same procedure as described above. As described above, when the doffing auxiliary 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 remains the same.

The lifting means of the doffing auxiliary device 10 is not limited to the link mechanism, but may be lifted 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 one that interlocks with the lifting and lowering of the lift table 33, and may be opened / closed by a separate miniature cylinder.

Further, the lifting means of the doffing auxiliary device 10 can be used not only for doffing the 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 auxiliary device 10 is in the raised position, and the transport unit 12
When is lowered, the lower end of the empty bobbin hits the claw 51, the chuck 26 is pressed and contracted, and the empty bobbin is released. Then, the doffing auxiliary device 10 descends, and the empty bobbin is set at the lower position of the spindle 14. Next, when the transport unit 12 chucks the next empty bobbin and travels right above the spindle shaft 14 and descends, the upper empty bobbin hits the lower empty bobbin, and the chuck 26 is pressed to reduce the empty bobbin. When is released, the upper position is reached. 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 remains the same.

Further, the entire pan winder to which the doffing method by the above-mentioned doffing device is applied will be described with reference to FIG. The pan winder 1 shown in the figure has weights arranged back to back, and two yarn feeding packages 60, 61 are installed in the back direction of the machine base 62 for each weight. Each yarn unwound from the yarn supplying package 60, 61 is a tenser 63,
Thread guides 66, 67 above and below the traverser 65
After that, it reaches the upper and lower pans 16 and 17. Since the spindle portion 11 described in FIG. 1 rotates at a high speed and the traverser 65 in FIG. 5 reciprocates between the gradually narrowing sections L, the upper and lower pans 16 and 17 shown in the drawing are wound. A slide guide 68 is provided on the side frame 35,
The slide body 6 that moves up and down along the slide guide 68
The rail 29 shown in FIG. Then, in the hoisting device 70 of FIG. 5, the left and right rails 29, 29 are synchronously moved up and down, the chuck 26 can lift the upper pan 17, and the rails 29, 29 are connected to the fixed circulation rail 3. You can switch between heights. The transfer unit 12 (see FIG. 4) after the doffing is transferred along the circulation rail 3.

FIG. 6 is a travel line diagram of the transfer unit using the circulation rail 3 described above. In FIG. 6, 1 is a pan winder, 2 is a double twister, and both are shown in FIG.
These are connected by a circulation rail 3 on which a transport unit such as the above travels. Reference numeral 29 is a rail that can be raised and lowered as shown in FIG.
Is a rail that can be raised and lowered 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 / detaching a tensor attached to 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 transfer unit having a hanger for the package of the double twister 2 is stopped.

When the package wound by the double twister 2 reaches the doffing time, the transport unit of the rail 4 enters the elevating rail 71, holds the spindle tenser, and returns to the original rail 4. 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 exchanged automatically or manually for doffing 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 on the rail 5 enters the lifting rail 71 of the double twister 2 to hold an empty pan (bobbin) and waits at the entrance of the pan winder 1. Further, the rails 29, 29 of the pan winder 1 include a transport unit having an empty chuck, and the upper and lower pans are lifted according to the procedure described in FIG. The transport unit holding the pan enters the elevating rail 71 and transfers the pan to the double twister 2. Then, the rail 29, 29 of the pan winder 1 has a carrying unit for holding an empty pan (bobbin), and the empty pan is inserted into the spindle shaft 14 of FIG. In this way, by connecting the pan winder and the double twister by the rail that the transport unit circulates, the pan winder doffing and
It is possible to automatically supply the pan to the double twister.

The doffing method using the doffing device shown in FIGS. 1 and 2 is not limited to the pan winder, and may be any one as long as it has a winder for winding a plurality of actual bobbins on the spindle shaft in a stacked state. Applicable to spinning machines.

[0028]

The doffing method of the winding device for carrying out the step winding of the present invention is characterized in that the actual bobbins other than the upper step on the spindle shaft are lifted to the upper step position for doffing. Since the machine side was able to do the doffing operation of the actual bobbins stacked using the same bobbin holder at the same height position, the chuck which is the bobbin holder inserted into the bobbin is conveyed downwardly. This has the effect of being able to automatically doff with a simple doffing device that installs the unit so that it can be raised and lowered.

[Brief description of 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 cross-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 a pan winder.

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

[Explanation of symbols]

 1 Pane Winder 10 Doffing Aid 11 Spindle Part 12 Transport Unit 14 Spindle Shaft 16,17 Pane (Actual Bobbin)

Claims (1)

[Claims] 1. A winding device for stacking bobbins on a spindle shaft projecting upward to wind a package around each bobbin, and a bobbin holding tool for holding the bobbin vertically moving a transport unit. A doffing method of a winding device for performing a multi-winding, wherein the doffing method is performed by lifting an actual bobbin other than the upper stage on the spindle shaft to an upper position and performing doffing.