DE102008015908A1 - Method for winding thread from cylindrical bobbin tube to cross-wound bobbin in textile machine, involves adjusting additional conicity at bobbin frame with asymmetric thread order by changing conicity factor - Google Patents

Abstract

The method involves utilizing a conicity factor for controlling a single-motor drive (14) of a crosswinding device (10), where the conicity factor reproduces a rate of thread running speed at a front side of a cross-wound bobbin (5). The conicity factor is increased or decreased at a cylindrical bobbin tube depending on thread twist direction with respect to a value 1 during bobbin travel of the cross-wound bobbin. An additional conicity at a bobbin frame (8) is adjusted with an asymmetric thread order by changing the conicity factor. An independent claim is also included for a bobbin device for implementing a method for winding a thread from a cylindrical bobbin tube to a cross-wound bobbin.

Description

The The present invention relates to a method for winding a Thread on a bobbin tube to a cheese, wherein the cheese mounted in a creel by a single motor driven device is driven and the thread on the cheese to the coil structure by means of a single motor driven drifting device is relocated.

From the publication DE 35 33 112 A1 It is known that when transporting finished, cylindrical cheeses on a double-sided, cross-wound textile machine, it is complex to consider the divergent winding directions of the cheeses produced on different machine sides in order to avoid difficulties in pulling the thread over the head of the cheeses. The cylindrical cheeses can not be considered purely externally the winding direction. Thus, in ignorance of the winding direction, a cross-wound can be deducted at the foot side during further processing instead of overhead. By the opposite deduction direction of the thread rotates in different directions, namely clockwise, so the so-called P-direction respectively P-turn or counterclockwise, the so-called Q-direction or Q-turn.

The Threads themselves have a twisting direction, which they at Spinning was imprinted, namely Z-wire or S wire. When unwinding, it turned out that Z-turned Yarns run better when they drain in the P-turn during downwinding while S-twisted yarns run better when winding in Q-turn expire. Turn in the opposite direction the threads continue, causing protruding fibers of the adjacent or underlying thread layers are screwed in and create a kind of burdock effect. That is why it is with cylindrical coils important to distinguish the head side from the foot side, so not by peeling over the foot of the Yarn breakage number is raised. That's why you have to go downhill from S-twisted yarns the production speed is reduced to To reduce this caused thread breaks. Now it would be it also possible, although not from the state of the art known, cylindrical cheeses, which are gesppult with a yarn, which has S-wire, aware of the foot side reeling off. But that would require confusion to rule out what happens with cylindrical coils their symmetrical structure is likely to be difficult. A wrong Abspulrichtung would be at the due to the assumed proper Abspulrichtung high Abspulgeschwindigkeiten too frequent Thread breaks lead.

in principle is the run-off behavior of conical cheeses especially for high take-off speeds suitable, the thread after the End with the smaller diameter must be deducted, if possible avoid touching the coil edge. As in the state the technique the taper can be produced only in one direction The optimum for Z-twisted yarns is with S-twisted yarns always a reduction of the take-off speed necessary.

From the generic publication EP 1 702 876 A1 a method is known in which for winding a yarn to a cross-wound bobbin on a bobbin, a held in a creel bobbin by a single motor driven roller is frictionally driven, while the thread is moved to the coil assembly on the bobbin by means of a single motor driven traversing device. The creel is movably mounted about a pivot axis, so that the creel frame can change its position with increasing diameter of a cylindrical cheese in the vertical direction. In addition, for producing conical cheeses, the coil frame has another pivot axis arranged orthogonally to the pivot axis in order to adapt the position of the frame to the conical shape of the cross-wound bobbin with the increasing diameter of the conical cross-wound bobbin.

task The present invention is a method for winding a To provide thread to a cross-wound bobbin on a bobbin, through in a simple way the optimal for unwinding removal direction depending on the Garndrehungsrichtung allows and one suitable for carrying out the method To propose winding device.

This is inventively achieved in terms of the method in that for controlling the single motor drive of the traversing device, a so-called Konizitätsfaktor is used, which reproduces the ratio of the yarn laying speeds on the end faces of the cheese, wherein on the cylindrical bobbin depending on the Garndrehungsrichtung the Konizitätsfaktor starting is raised or lowered by the value 1 during the spool travel of the cross-wound bobbin, wherein on the creel one with the by asymmetric change of the Konizitätsfaktors yarn order at least in their direction matching Zusatzkonizität is adjusted by which the creel is inclined to the horizontal to the conical structure of the cheese to follow. The inventive method allows the construction of conical cheeses, which according to their Garndrehungsrichtung generally on the side of the smaller cross-coil diameter from be pulled so that both with S-wire and with Z-wire wound packages can be further processed with the highest possible take-off speed. The change of the conicity factor during winding of S-wire to a cheese causes a conical cheese to be formed on the cylindrical bobbin in which the head side is formed as the side with the larger bobbin diameter and the foot side as the side with the smaller bobbin diameter , The cross-wound bobbin wound up in accordance with the invention is inevitably removed from the foot in the subsequent process of further use, since the cross-wound bobbin is plugged onto a gate or the like in accordance with its shape with the head side first. In this way, the unwinding is effected on the foot side, which leads to the avoidance of thread breaks, which, as known from the prior art, would result in ignorance of the winding position of the thread at high take-off speeds. Conversely, the change in the Konizitätsfaktor during winding of Z-wire to a cross-wound bobbin, that the process according to coiled on a cylindrical bobbin cross-wound bobbin is always removed overhead, since this side is the one with the smaller bobbin diameter.

Especially can by the Konizitätsfaktor and Zusatzkonizität the cheese should be formed so that the side with the smaller diameter, above which the cheese is to be unwound, has such a position, that the thread turns when unwinding in the direction of untwisting becomes. The tendency of the withdrawn thread, with a deduction in the Winding direction, in which the thread is further turned off, protruding Pinch fibers of adjacent or underlying thread layers, is reduced.

Preferably may the Konizitätsfaktor from the beginning of the coil travel to be changed. As a result, density differences in the Coil construction avoided, which on punctual changes the bearing pressure at the increase of the diameter during the coil travel are due.

Especially can the Konizitätsfaktor depending on the angular position of the creel are changed. Because the continuous change of the angular position of the creel over the increase of the diameter of the cheese the bobbin construction in terms of influences the density distribution in the cheese, is accordingly the Lowered conicity factor over the coil travel, to achieve a balanced material application on the cheese, the for a uniform coil construction is required.

Preferably may change the conicity factor during the coil travel are carried out continuously, so that causes a sliding decrease in the conicity factor becomes. The calculation of the ideal curve of the change However, the conicity factor is computationally intensive.

alternative For this purpose, the Konizitätsfaktor in discrete steps be changed, reducing the computational effort during the coil travel is reduced.

Especially can change the number and length of an interval between the discrete changes in the conicity factor depending on the desired overall diameter be determined of the cheese to be produced. Because the total diameter of packages to be produced may vary from lot to lot, it makes sense, the respective number of and the length an interval between the discrete changes of the Konizitätsfaktor to the respective desired total diameter to individually adapt the cross-wound bobbin for each cross-wound bobbin to ensure a uniform coil structure.

For this can the Konizitätsfaktor depending on the desired conicity of the cheese to a value be lowered to 0.5. The conicity of the produced Cheese can be given to a central control unit be, depending on the given taper the Konizitätsfaktor starting during the coil travel lower from the initial value of 1. For example, at a preset Conicity of 4 ° 20 the Konizitätsfaktor in the course of the coil travel to a value of about 0.8 to 0.85 lowered. For a cheese with a desired conicity for example, 5 ° 57 becomes the conicity factor lowered to a value of about 0.7 to 0.75.

Preferably At least one curve can show the change in the conicity factor be deposited in a central control unit, which is used to manufacture of cheeses of a certain conicity is retrievable. As a result, a further simplification is achieved by at the central control unit of a variety of selectable Curves of the change in the conicity factor the one selected is the one that matches the parameters and the Shape of the manufactured conical cheese is adapted.

To carry out the method, a winding device is proposed, which has a traversing device, which is driven by a motor single motor, and a bobbin drive roller for frictionally driving a content Erten in a pivotally mounted creel mounted cheese, wherein for controlling the respective single-motor drive of the working place len a Konizitätsfaktor the Spulstellenrechner is predetermined, and on the creel an adjustment is arranged by the tilting of the creel to the left or right can be specified with its caused by the growth of the cheese pivoting and an inclination angle is adjustable to the creel during Aufspulvorganges inclined to the horizontal. By means of the adjusting device, the required conicity of the finished cross-wound bobbin can be specified for producing conical cheeses, by adjusting the angle corresponding to the desired conicity of the finished cross-wound bobbin on the device, starting from a center position which corresponds to 0 ° and in which cylindrical cross-wound bobbins can be wound , In addition, the adjustment device alternatively allows tilting of the creel to the left or right to wind a left-handed or right-handed thread on cylindrical bobbins to conical cheeses.

The Invention is illustrated below with reference to one in the drawings Embodiment explained in more detail.

It demonstrate:

1 in side view schematically a job of a cheese-producing textile machine;

2 a front perspective view of the winding device according to 1 ;

3 a perspective view of a coil frame with Zusatzkonizität;

4 a diagram with a linear curve of the change in the Konizitätsfaktors on the coil travel;

5 a diagram with a stepped curve of the change in the conicity factor over the coil travel.

In 1 is a side view schematically a job 2 a cheese-producing textile machine, in the embodiment, a so-called cross-winding machine 1 represented. On the jobs 2 Such cheese winder 1 are produced on ring spinning machines, relatively little thread material having spinning cops 3 to large-volume cheeses 5 rewound. The cheeses 5 be after their completion by means of a non-illustrated, automatically operating service unit on a machine-length cross-bobbin transport device 7 passed and transported to a machine end side arranged Spulenverladestation or the like.

Such spoolers 1 As a rule, they also have a logistics device in the form of a cop and tube transport system 6 on. In this cop and sleeve transport system 6 run the spinning cops 3 or empty tubes on transport plates 11 around. From the cop and sleeve transport system 6 are in the 1 only the Kopszuführstrecke 24 , the reversibly drivable storage section 25 , one of the winding units 2 leading transverse transport routes 26 as well as the sleeve return path 27 shown.

Every job 2 of the cheese winder 1 has a control device, a so-called winding station computer 28 on, among other things, a bus connection 29 to a central control unit 30 of the cheese winder 1 as well as via control lines 15 . 35 to the individual drives 14 . 33 a winding device 4 connected.

The winding device 4 has, among other things, a creel 8th who, as in 1 indicated, at least about a pivot axis 12 parallel to the axis of rotation of the cheese 5 runs, is movably mounted. The coil frame 8th can also, which is basically known and therefore not shown for reasons of clarity, to another pivot axis orthogonal to the pivot axis 12 runs, limited rotatably mounted. The coil frame 8th is designed so that either cylindrical or conical cheeses can be wound on it.

As in 1 further indicated, the lies in the coil frame 8th freely rotatable mounted cross-wound bobbin 5 during the winding operation with its surface on a bobbin drive roller 9 on that by an electric motor 33 single motor is applied. The electric motor 33 is via the control line 35 to the workstation computer 28 connected.

Furthermore, to the traversing of a thread 16 during the winding process a traversing device 10 intended. Such, in the 1 only schematically indicated traversing device 10 preferably has a finger thread guide 13 on, by, by a reversible single drive 14 applied to the cheese 5 running thread 16 at high speed between the end faces of the cheese 5 traversed. The thread guide drive 14 stands over the control line 15 also with the workstation computer 28 in connection.

The 2 schematically shows the winding device 4 a job 2 in perspective front view. As indicated, each of these jobs points 2 one with an input device 32 equipped Spulstellengehäuse 31 on, among other things, the winding station calculator 28 receives. At the winding head 31 is also the winding device 4 essentially set from the creel 8th for holding a cylindrical sleeve 18 , the coil drive roller 9 for rotating the sleeve 18 or the cheese forming thereon 5 and the traversing device 10 for traversing the cheese 5 running thread 16 consists.

The traversing device 10 has a finger thread guide 13 on, its single drive 14 over the control line 15 with the winding station computer 28 connected is. The finger thread guide 13 is about the winding station computer 28 defined controllable, so that among other things the thread laying speed is precisely adjustable.

The bobbin drive roller 9 also has a single drive 33 , in turn, via the control line 35 with the winding station computer 28 communicates to the single drive 33 to drive defined. The coil frame 8th that is at least one pivot axis 12 has limited rotatably mounted, has two coil frame arms 20 . 21 on, in turn, each equipped with a rotatably mounted sleeve receiving plate.

In 3 is the creel 8th as well as the adjusting device arranged thereon 36 for setting the additional conicity. The additional conicity is set before the start of the coil travel, at the end of the coil travel with the achievement of the nominal diameter of the cheese to be produced 5 to achieve the desired conicity. The at the adjustment 36 set Zusatzkonizität causes a positive guidance of the coil frame 8th , The adjustment device 36 includes a carrier 37 , by means of which the adjusting device 36 at the housing of the workplace 2 is attached. Furthermore, a lever arrangement 40 provided on the coil frame 8th and on the carrier 37 is articulated. An arm of the lever arrangement 40 is in a curved slot 38 slidably disposed while another arm on the creel 8th is articulated. To set the required additional conicity is above the slot 38 a scale 39 on the carrier 37 provided in order to adjust an angle corresponding to the desired conicity of the cheese. The additional conicity is achieved by moving an adjustment aid 41 that with the lever arrangement 40 is connected, along the slot 38 set and fixed. This is the adjustment help 41 before starting the winding, starting from a middle position, which corresponds to an additional conicity of 0 °, in the slot 38 moved to the left or to the right and then fixed in this position.

In the middle position of the adjustment device 36 becomes the creel 8th only parallel to the bobbin drive roller 9 pivoted so that cylindrical cheeses are produced. The setting of additional conicity on the setting device 36 to the left of the center position, as in 3 shown, causes the lever assembly 40 the creel 8th in the course of the coil travel lifts and is tilted to the right, while at a set additional conicity right of the center position of the coil frame 8th through the lever arrangement 40 is tilted to the left. The adjustability of Zusatzkonizität takes place on the adjustment 36 by means of scaling 39 in discrete steps, starting from the center position for the production of cylindrical cheeses, towards an adjustment to the left for the winding of right-handed thread or to the right for the winding of left-handed thread to conical cheeses.

For winding right-twisted thread into a conical cross-wound bobbin 5 on the cylindrical sleeve 18 is from the winding station computer 28 determines a curve of the Konizitätsfaktor K or predetermined by this, which represents the ratio of the yarn laying speeds at the end faces of the cheese. For the construction of the conical cheese 5 on the cylindrical sleeve 18 is given as the initial value a Konizitätsfaktor equal to 1, in which the ratio of the thread laying speed at the end faces is constant, which corresponds to the Konizitätsfaktor for the construction of a cylindrical cross-wound bobbin. According to the invention, however, is continuously lowered from the beginning of the coil travel at the Konizitätsfaktor K until the Konizitätsfaktor K has been lowered to a final value, so that the structure of the cheese 5 at the end of the coil travel corresponds to the desired conicity. The change in the Konizitätsfaktorors K ideally has a linear curve, the diameter increase on the cheese 5 and thus the angular position of the coil frame 8th depends, as in 4 exemplified.

A second curve of the Konizitätsfaktorors K, as shown in 5 illustrated by way of example, is substantially stepped, which is due to the changes in the Konizitätsfaktorors K in discrete steps. The creel 8th must be inclined at an angle to the horizontal in the course of the coil travel to the conical structure of the cheese 5 to be able to follow. The change of the angular position of the coil frame 8th takes place, as already described, sliding positively guided by the on the coil frame 8th arranged adjustment device 36 for generating the additional conicity.

The change in the Konizitätsfaktorors K takes place according to the method in dependence on the change in the angular position of the coil frame 8th , For this purpose, a continuous lowering of the conicity factor K can be provided, as by the linear course in 4 indicated. Alternatively, the lowering of the conicity factor K occurs stepwise, as in FIG 5 shown. The gradual reduction can be achieved with less computation than the continuous reduction of the conic factor. K. It is also possible in the central control unit 30 to deposit a plurality of gradients of change in the Konizitätsfaktorors K, which were predetermined for the respective desired taper of a cheese and can be selected by an operator. The shift of the Konizitätsfaktorors K for example, for a cheese with the conicity 4 ° 20, starting from the value 1 to a final value of about 0.8 to 0.85. In the case of a cheese of conicity 5 ° 57, the value is lowered to about 0.7 to 0.75, in which case compared to the cheese with the taper 4 ° 20 by means of the adjustment 36 a larger angle of Zusatzkonizität is preset. The inventive method is in a similar manner for winding of left-handed thread on a cylindrical sleeve 18 to a conical cheese 5 suitable.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• - DE 3533112 A1 [0002]
• EP 1702876 A1 [0005]

Claims (11)

Method for winding a thread ( 16 ) on a bobbin tube ( 18 ) to a cheese ( 5 ), whereas those in a creel ( 8th ) retained bobbin tube ( 18 ) by a single motor driven device ( 9 ) and the thread ( 16 ) on the cheese ( 5 ) to the coil structure by means of a single motor driven drifting device ( 10 ), characterized in that - for driving a single-motor drive ( 14 ) of the traversing device ( 10 ) a so-called Konizitätsfaktor (K) is used, the ratio of the thread laying speeds at the end faces of the cheese ( 5 ), that - on the cylindrical bobbin tube ( 18 ) depending on the yarn twisting direction the Konizitätsfaktor (K) starting from the value 1 during the spool travel of the cheese ( 5 ) is raised or lowered, - that on the creel ( 8th ) is adjusted with the asymmetric by the change in the Konizitätsfaktors yarn order at least in their direction Zusatzkonizität to those of the coil frame ( 8th ) is inclined to the horizontal. A method according to claim 1, characterized in that by the Konizitätsfaktor (K) and the Zusatzkonizität the cheese ( 5 ) is formed so that the side with the smaller diameter over which the cheese ( 5 ) is to be unwound, has such a position that the thread is twisted when unwinding in the direction of turning inside. Method according to claim 1 or 2, characterized that the Konizitätsfaktor (K) from the beginning of the coil travel to be changed. Method according to one of claims 1 or 2, characterized in that the Konizitätsfaktor (K) in dependence on the respective angular position of the coil frame ( 8th ) is changed. Method according to one of claims 1 to 3, characterized in that the change in the Konizitätsfaktor (K) is carried out continuously. Method according to one of claims 1 to 3, characterized in that the Konizitätsfaktor (K) is changed in discrete steps. Method according to Claim 5, characterized in that the number and the length of an interval between the changes in the conicity factor (K) in dependence on the diameter of the cheeseshaping coil currently present during the coil travel ( 5 ). Method according to one of claims 1 to 6, characterized in that the Konizitätsfaktor (K) in dependence on the desired conicity of the cheese ( 5 ) is lowered to a value of up to 0.5. Method according to one of claims 1 to 7, characterized in that one or more curves of the change in the Konizitätsfaktor (K) in a central control unit ( 30 ) which are used for the production of cheeses ( 5 ) of a certain conicity are retrievable. Winding device ( 4 ) for carrying out the method according to one of claims 1 to 9, which comprises a traversing device ( 10 ) driven by a drive ( 14 ) is driven by a single motor, and a bobbin drive roller ( 9 ) for the frictional driving of a pivotally mounted in a coil frame ( 8th ) held cheeses ( 5 ), wherein the traversing device ( 10 ) and the bobbin drive roller ( 9 ) by a winding station computer ( 28 ) are driven, characterized in that for controlling the respective single-motor drive ( 14 ) of the jobs ( 2 ) the Konizitätsfaktor (K) the Spulstellenrechner ( 28 ) and that on the creel ( 8th ) an adjustment device ( 36 ) is arranged, by the pivoting of the coil frame ( 8th ) can be predetermined to the left or right and an angle of inclination is adjustable to that of the coil frame ( 8th ) is tilted during the winding process to the horizontal. Winding device ( 4 ) according to claim 10, characterized in that the adjusting device ( 36 ) has a center position corresponding to an additional conicity of 0 ° to produce cylindrical cheeses.