EP1809797B1 - Method and device for thread distribution in a warping frame - Google Patents

Abstract

The invention relates to a method for winding a strip ( 17 ) consisting of a plurality of parallel threads ( 18 ) onto a rotating warping drum ( 2 ), wherein the winding position of each individual thread is determined with the aid of a thread guide ( 21 ) which is associated with a thread selection device ( 8 ) and which is allocated to said thread. The thread guides ( 21 ) are displaced in the direction of the axis of rotation ( 6 ) of the warping drum ( 2 ) from a rest position into a working position and the individual threads ( 18 ) are seized successively by an internal thread carrier ( 30 ) associated with the warping drum ( 2 ).

Description

The invention relates to a method and an apparatus for thread pitch on a warper. Warping machines for winding a strip consisting of a plurality of parallel threads onto a winding body rotating about an axis of rotation are used, for example, in textile technology in weaving preparation for warping the warp.

As part of a warping process, it is necessary for the correct presentation of the chain on the weaving tree to introduce sub-elements in the thread assembly. The insertion of sub-elements usually requires a machine standstill in conventional methods. Such a method is for example from the DE 44 43 627 A1 known.

It is therefore an object of the invention to provide a method and an apparatus of the type mentioned, with which a thread pitch on a warping machine is possible without machine downtime. This object is achieved in procedural terms by a method having the features according to claim 1 and in device-related terms by a device having the features in claim 9.

At the beginning and / or at the end of a band winding, a compartment is formed with at least a part of the threads at at least one point in a peripheral region of the wound body when the winding body rotates. In the open compartment, a sub-element is then introduced. Such thread pitch may preferably serve to form a crosshair. Such a reticle later facilitates further processing, for example in the weaving mill. Of course, such a thread pitch also be used for a sizing division. The shedding, especially the crosshairs and the introduction of the sub-element is thus at full speed. On the one hand, the method is suitable for use in conventional warping processes, in which the threads on the warper blade are brought to the correct thread density and width. On the other hand, the method is also suitable for a warping process in which each individual thread is deposited over an individual thread guide. The winding position of each individual thread on the winding body can thus be determined with a thread guide associated with this thread. The thread guides thus replace the sharpening blade, but in contrast to this they can approach arbitrary positions. The thread guides may preferably be adjustable in the direction of the axis of rotation from a rest position into a working position. Thus, the yarn guide can be used alternately and so change the composition of the tape to be wound arbitrarily. This results in a flying takeover of the work threads on the bobbin. In this case, both the specialist training as well as taking over the work threads at full speed.

The compartment can be formed in an advantageous manner with the aid of shedding combs arranged in the peripheral region of the winding body, which rotate together or synchronously with the winding body. For example, for a crosshairs, the corresponding threads can be alternately deposited on the combs and between the combs.

The compartment can be formed in a particularly advantageous manner by depositing threads on shedding combs, which are arranged on a co-rotating synchronously with the winding body and this surrounding ring element. This method is suitable in particular also for conventional winding bodies, for example for warping drums of known cone warping machines. A special embodiment of the warping drum is not essential.

Alternatively, the threads can also be stored directly on the winding body. For this purpose, the compartment can be formed by depositing threads on shed forming combs, which are arranged on the winding body. Since the shedding combs are part of the bobbin, can be dispensed with additional drive and transmission means for producing a synchronous rotation with the winding body. This method arrangement is particularly preferred for a thread pitch at the beginning of a tape roll.

In particular, with regard to handling of the warping machine, it may be advantageous if the shedding at the beginning and at the end of a tape roll by analog means in the process. The aforementioned ring element can be an inner ring for the thread pitch at the beginning of the tape roll and an outer ring for the thread pitch at the end of the tape roll.

A particularly advantageous shedding arises when for striking the crosshairs at least two arranged on the winding body in relation to the circumferential direction shedding combs are moved from an outer circumference about tangential rest position in a shedding position, in which the combs projecting radially from the outer periphery and that in the course of a Winding body rotation, the threads are preferably placed alternately on the combs and between the combs. The shedding combs can be relatively easily moved with a partial rotation in their working position. Of course, this method could also be used for sizing. This is not about a cross formation, but a separation of the threads. For the sizing division, a plurality of shedding combs arranged one behind the other are formed such that a shed is formed in each case only for individual threads. If additionally a sizing division is provided, this is preferably done before the crosshair formation.

An auxiliary section bar can be inserted into the open compartment. Thereafter, forming the subject tray shedding comb can be moved back to the rest position and finally the divided by the auxiliary dividing rod threads can be stripped on a sub-element, preferably on a sub-string or on a sub-band. The sub-string or sub-band is thus not actually fed into the subject, but the threads are handed over to these sub-elements.

On the winding body, a plurality of tape roll with the same or different thread repeat to each other or be wound side by side, the bobbin uninterruptedly rotates. The subband can be moved by a shedding comb by means of a push or pull movement of a tape winding to a next tape reel. For this purpose, for example, during the pivoting movement of the shedding comb in the rest position, the sub-band engage via its radially projecting from the outer circumference end portion in the shedding comb, whereby the sub-band can be pulled along when moving the shedding comb in a simple manner. Alternatively, when moving the shedding comb also a shock movement could take place.

Likewise, at the end of a tape roll with at least a portion of the threads at least one point on a synchronously rotating with the winding body and this surrounding outer ring a crosshairs are beaten for shedding, wherein in the open Tray a sub-element is introduced and wherein the shedding is preferably carried out with analog means, ie with Fachbildekämmen, as at the beginning of the tape reel.

In this way, a plurality of tape reels with the same or different thread repeat can be wound on each other or side by side on the winding body, wherein the winding body rotates continuously.

Particularly advantageously, one of a plurality of threads of preferably different genus existing thread group is introduced to a arranged in the winding region of the bobbin thread selection, wherein individual threads are withdrawn as working threads on the thread guides and form the band, while the remaining threads as stock threads on the thread selection means one clamping point are held clamped. This procedure makes it possible to perform the band change with continuously rotating bobbin, which obviously speeds up the work process considerably.

It is advantageous if, after at least one first winding sequence, the working threads of the wound strip are separated and held clamped on the thread selection device, and if in at least one second winding sequence the working threads of the strip have a different composition than during the first winding sequence. The composition of the band can also be the same at several adjacent coils. Finally, it would also be conceivable that the threads of a tape are not separated after each winding sequence, but that the tape is guided at the end of a roll directly to the beginning of an adjacent roll.

A taking place at full bobbin rotation yarn transfer can be achieved particularly advantageous if the selected work threads are first stretched by the thread guide in a driving position on the winding body in which they are stretched between the yarn guides and one nip approximately parallel to the axis of rotation and that in Course of a bobbin rotation all working threads in the driving position of one of the winding body associated inner Fadenmitnehmer sequentially detected and then separated from the nip. After disconnecting from the clamping points, the thread guides can be driven with their work threads in the tape winding position on bandwidth. This flying transfer of the clamped stock threads as work threads on the bobbin can be done at high speeds and within a single bobbin rotation.

After the construction of a tape reel turn all working threads can be sequentially detected by a co-rotating synchronously with the winding body outer Fadenmitnehmern and then clamped by the clamping point and at the same time separated from the thread guide. This is practically a flying return of the work threads in the waiting position at the terminal points.

It is obviously necessary on a cone warping machine that the thread selection device for the conical winding of the strip is displaced on a shear table in the direction of the axis of rotation or at right angles thereto. The warping drum forms the bobbin.

In terms of the device, it is expedient if the thread pitch on a warping machine, in particular for implementation of the method described above, at least one point on the peripheral region of the winding body means for hitting a crosshair and for introducing a partial element are arranged in an open by the crosshair with rotating bobbin.

The means for hitting the crosshair may comprise at least two shed combs arranged one behind the other and approximately parallel to one another, which can be moved from a rest position approximately tangential to the outer circumference, in particular by means of a pivoting movement, into a shedding position in which the combs project radially from the outer circumference by means of the thread guide the threads are alternately on the combs and between the combs can be stored. The shedding combs can either be part of the wound body or be detached from the winding body.

At least the Fachbildekamm forming the relevant compartment may be associated with a sub-auxiliary rod, which is insertable for introducing the sub-element parallel to the shedding comb in the open compartment. It may be advantageous if each Fachbildekamm an auxiliary sub-staff is assigned.

In one embodiment, the partial element can be a partial cord which can be pulled off from a preferably cylindrical partial cord storage which is held on the movement axis of the auxiliary partial rod next to the shedding comb. In addition to the auxiliary part rod, a thread scraper can be arranged, with which the tensioned threads, on the end face of the Teilschnurspeicher battered auxiliary sub-rod and the sub-string memory on the sub-string are pushed.

In an alternative embodiment, a partial band which is displaceable parallel to the winding body shell and has an end portion projecting radially from the outer circumference can run on the winding body. In addition to the auxiliary part rod, a thread scraper can be arranged, with which the clamped separate threads are pushed from the auxiliary part of the sub-strip, with the aid of the end portion, the thread pitch is maintained. Such a sub-band can for example consist of an elongated thin metal strip or strip of plastic with a thickness between 0.1 and 1 mm. The end portion should preferably be formed inflexible or relatively rigid, whereby its radially projecting from the outer circumference position can be maintained even under mechanical action. A sub-band can be replaced after completion of the warping process by drawing a sub-string.

The sub-band may be a flexible sub-band, which is mounted inside the drum, deflected over the end of the drum and parallel to the winding body shell is displaceable.

The device may comprise at least one synchronously rotatable with the winding body and this surrounding ring element on which at least one point on the peripheral region, the means for hitting a crosshairs are arranged with rotating bobbin, wherein the ring element is an inner ring for the thread pitch at the beginning of a tape roll and / or an outer ring for the thread pitch at the end of a tape roll is. Such an arrangement detached from the winding body has various advantages. Thus relatively simple existing warping machines can be retrofitted. The device is further characterized by the fact that it can be easily maintained.

However, the means for hitting a crosshair at the beginning of a tape roll may also be associated with the winding body, wherein these are arranged on a displaceable on the winding body surface inner ring. This inner ring would thus be part of the bobbin. It can be displaceable synchronously or asynchronously with a wound with the winding body and surrounding this outer ring for the thread pitch at the end of a tape roll.

The ring element may be provided in the region of its outer shell with a toothed ring, which is rotatably driven via a drive shaft synchronously with the winding body. In this way, the rotational movement for the ring element can be accomplished particularly easily.

Means for displacing the auxiliary part bar into an open compartment and / or from an open compartment may be provided, which are in operative connection with an auxiliary sub-bar linkage surrounding the winding body, which may preferably be controllable by switches. Additionally or possibly also alternatively, means for displacing the thread scraper can be provided which are in operative connection with a thread scraper link arrangement surrounding the winding body, which can preferably be controlled by switches. Two switches can be provided for the two directions of movement. Of course, other control means are conceivable instead of the switches.

Furthermore, means for swiveling the shedding combs from the rest position to the shedding position and in the opposite direction can be provided, which can be controlled mechanically by an electrically actuated cam control. In this way can be relatively easily acted from the outside on the rotating shedding comb.

The thread-splitting device can be combined with a device for winding a strip consisting of a plurality of parallel threads onto a winding body which can be driven in rotation about an axis of rotation. In this device, a yarn guide can be arranged in the peripheral region of the winding body for each individual thread, over which the thread in question can be wound up and with which the winding position can be fixed on the winding body.

The yarn guides may be part of a yarn selection device, which may each have a nip and a thread guide for a plurality of threads, wherein a portion of these threads are deducted as the working threads forming the tape on the thread guide, while the remaining threads as stock threads at the nips can be fixed in the waiting position.

Depending on a thread guide and a nip can be assigned to a thread guide module having a gear for adjusting the thread guide and a movable clamping-cutting unit with a nip for clamping the thread and a cutting device for separating the thread. The cutting and clamping of the threads takes place in this way virtually the same location, whereby the flying thread change is made possible with rotating winding body.

The gear of the yarn guide module is preferably a traction mechanism with a traction means, in particular with a toothed belt on which the yarn guide is arranged such that it is movable on a yarn guide path approximately parallel to the axis of rotation of the winding body. The traction mechanism can, for example be moved very quickly and precisely with a stepper motor. Conceivable, however, would be other types of transmission, such as a push rod, at the end of the yarn guide is arranged.

The clamping-cutting unit can be mounted so movable about at right angles to the yarn guide distance, that the nip is displaceable relative to the winding body circumference between a radially outer rest position and a radially inner yarn transfer position. This lifting movement can be made for example via a pneumatic pressure cylinder.

The winding body may be a warping drum of a cone warping machine. The yarn selection device can be mounted on a shear table such that it is displaceable both in parallel and at right angles to the axis of rotation of the drum

The inner and the outer Fadenmitnehmer can be displaceable parallel to the axis of rotation of the winding body, wherein the inner Fadenmitnehmer is arranged on a linear guide in the winding body surface and the outer Fadenmitnehmer on a rotatably driven, the winding body surrounding outer ring which is mounted in an outer ring bearing.

The apparatus may comprise an inner thread driver arranged on the winding body for detecting and taking along all the threads of the tape to be wound at the beginning of the winding, as well as an outer thread follower co-rotating synchronously with the winding body on an outer orbit for temporarily detecting all the threads of a wound tape.

Figur 1

Eine perspektivische Gesamtdarstellung einer Schärmaschine,

Figur 2

Eine perspektivische Teildarstellung der Schär- maschine gemäss Figur 1 aus einem anderen Blickwinkel,

Figur 3

Eine Teilansicht einer perspektivischen Dar- stellung einer Fadenwähleinrichtung mit Faden- führermodulen einer Schärmaschine,

Figur 4

Eine perspektivische Darstellung eines einzel- nen Fadenführermoduls,

Figur 5

Eine Ansicht des Fadenführermoduls gemäss Figur 4 aus Pfeilrichtung (a),

Figur 6

Eine Ansicht des Fadenführermoduls gemäss Figur 4 aus Pfeilrichtung (b),

Figuren 7a/7b

Das Fadenführermodul in der Fadenübergabestel- lung,

Figuren 8a/8b

Das Fadenführermodul unmittelbar nach dem Tren- nen des Fadens von der Klemmstelle,

Figur 9a/9b

Das Fadenführermodul beim Ablegen des Fadens auf einen Fachbildekamm,

Figur 10a/10b

Das Fadenführermodul am Wickelende bei der Übernahme des Fadens durch den äusseren Faden- mitnehmer,

Figuren 11a/11b

Das Fadenführermodul beim Abtrennen des Ar- beitsfadens am Wickelende,

Figur 12

Eine stark schematisierte Seitenansicht auf ein Fadenkreuz,

Figur 13

Eine perspektivische Darstellung auf das Ende eines Fachbildekamms auf dem Wickelkörper mit eingeführtem Hilfsteilstab,

Figur 14

Eine im Schnitt und perspektivisch dargestellte Teilschnurhülse,

Figuren 15a/15b

Ein unterer Fachbildekamm zur Fadenkreuzbildung in Betriebsstellung vor dem Einlesen der Fäden,

Figuren 16

Der Fachbildekamm mit eingelegten Fäden,

Figuren 17

Der Fachbildekamm mit ausgefahrenem Hilfsteil- stab,

Figuren 18

Der Fachbildekamm in der Ruhelage mit am Hilfsteilstabende angekoppelter Teilschnurhül- se,

Figuren 19

Der Fachbildekamm mit vorgeschobenem Fadenab- streifer,

Figuren 20

Der Fachbildekamm mit zurückgezogenem Fadenab- streifer,

Figuren 21a/21b

Ein oberer Fachbildekamm mit eingelesenen Fä- den,

Figuren 22

Der Fachbildekamm nach dem Einführen eines Hilfsteilstabes,

Figuren 23

Der zurückgeschwenkte Fachbildekamm mit auf den Hilfsteilstab abgelegten oberen Fäden,

Figuren 24

Der Fachbildekamm nach dem Abstreifen der unte- ren Fäden auf ein Teilband,

Figuren 25

Der Fachbildekamm nach dem Abstreifen der obe- ren Fäden auf den Wickel,

Figuren 26

Der Fachbildekamm in neutraler Ausgangslage zur Aufnahme eines neuen Bandes,

Figur 27

Die schematische Darstellung der Wicklung und Fadenkreuzbildung an einem Bandwickel,

Figuren 28a

Ein erster Fachbildekamm zur Schlichteteilung,

Figuren 28b

Ein zweiter Fachbildekamm zur Schlichteteilung.

Figuren 29a/29b

Eine perspektivische Gesamtdarstellung einer weiteren Schärmaschine,

Figur 30

Ein Draufsicht auf eine schematisierte Schärma- schine mit der Darstellung der einzelnen Ma- schinenkomponenten,

Figur 31

Eine weitere schematisierte Darstellung einer Schärmaschine,

Figur 32

Einen Ausschnitt auf eine perspektivische Dar- stellung der Schärmaschine gemäss Figur 29a/29b mit einer Fadenwähleinrichtung und einer Vor- richtung zur Fadenteilung,

Figur 33

Eine Vorderansicht auf den Ausschnitt gemäss Figur 32 bei einem Schärvorgang,

Figur 34

Eine Vorderansicht auf eine Fadenteilungsein- heit der Schärmaschine gemäss Figur 29a/29b,

Figur 35

Die Fadenteilungseinheit gemäss Figur 35 in ei- ner Seitenansicht,

Figur 36

Die Fadenteilungseinheit gemäss Figur 34 in ei- ner perspektivischen Darstellung,

Figur 37

Einen Ausschnitt auf die Fadenteilungseinheit gemäss Figur 36 (Ausschnitt A),

Figur 38

Eine Seitenansicht einer Fadenteilungseinheit,

Figur 39a - 39c

Ein Fachbildekamm in Fachbildestellung und ein Teilband,

Figur 40a - 40c

Der Fachbildekamm gemäss Figur 39a/39b/39c in einer Ruhestellung und das Teilband

Figur 41a/41b

Ein unterer bzw. innerer Fachbildekamm mit ein- gelesenen Fäden,Figur 42a/42b Der Fachbilde- kamm nach dem Einführen eines Hilfsteilstabes,

Figur 43a/43b

Der zurückgeschwenkte Fachbildekamm mit auf den Hilfsteilstab abgelegten oberen Fäden, und

Figur 44a/44b

Der Fachbildekamm nach dem Abstreifen der obe- ren und unteren Fäden auf den Wickel.

Further advantages and embodiments of the invention will become apparent from the following description of an embodiment and from the drawings. Show it:

FIG. 1

An overall perspective view of a warping machine,

FIG. 2

A partial perspective view of the sharpening machine according to FIG. 1 from a different angle,

FIG. 3

A partial view of a perspective view of a thread selection device with thread guide modules of a warping machine,

FIG. 4

A perspective view of a single yarn guide module,

FIG. 5

A view of the yarn guide module according to FIG. 4 from the direction of the arrow (a),

FIG. 6

A view of the yarn guide module according to FIG. 4 from the direction of the arrow (b),

Figures 7a / 7b

The yarn guide module in the yarn transfer position,

Figures 8a / 8b

The thread guide module immediately after separation of the thread from the nip,

Figure 9a / 9b

The thread guide module when placing the thread on a shedding comb,

Figure 10a / 10b

The thread guide module at the end of the take-up of the thread by the outer thread taker,

Figures 11a / 11b

The thread guide module when separating the working thread at the end of the winding,

FIG. 12

A highly schematic side view of a crosshair,

FIG. 13

A perspective view of the end of a Fachbildekamms on the bobbin with inserted auxiliary part bar,

FIG. 14

A sectional and perspective shown Teilschnurhülse,

FIGS. 15a / 15b

A lower shedding comb for crosshairs in operating position before the threads are read in,

Figures 16

The technical image comb with inserted threads,

Figures 17

The shedding comb with extended auxiliary rod,

Figures 18

The shedding comb in the rest position with sub-string sheath attached to the auxiliary shank end,

Figures 19

The shedding comb with advanced thread scraper,

Figures 20

The shedding comb with retracted thread scraper,

Figures 21a / 21b

An upper shedding comb with inserted threads,

Figures 22

The shedding comb after the insertion of an auxiliary partial rod,

Figures 23

The zurückgeschwenkte shedding comb with deposited on the auxiliary bar upper threads,

Figures 24

The shedding comb after stripping the lower threads onto a sub-band,

Figures 25

The shedding comb after stripping the upper threads on the winding,

Figures 26

The Fachbildekamm in neutral starting position for the admission of a new volume,

FIG. 27

The schematic representation of the winding and crosshairs on a tape roll,

Figures 28a

A first shedding comb for sizing

Figures 28b

A second shedding comb for sizing.

Figures 29a / 29b

An overall perspective view of another warping machine,

FIG. 30

A top view of a schematic warping machine with the representation of the individual machine components,

FIG. 31

Another schematic representation of a warping machine,

FIG. 32

A section on a perspective view of the warper according to Figure 29a / 29b with a thread selection device and a device for thread pitch,

FIG. 33

A front view of the neckline according to FIG. 32 during a warping process,

FIG. 34

A front view of a thread pitch unit of the warper according to Figure 29a / 29b .

FIG. 35

The thread pitch unit according to FIG. 35 in a side view,

FIG. 36

The thread pitch unit according to FIG. 34 in a perspective view,

FIG. 37

A section on the thread-splitting unit according to FIG. 36 (Detail A),

Figure 38

A side view of a thread-splitting unit,

FIGS. 39a-39c

A Fachbildekamm in Fachbildestellung and a sub-band,

FIGS. 40a-40c

The shedding comb according to Figure 39a / 39b / 39c in a rest position and the subband

Figure 41a / 41b

A lower or inner shedding comb with inserted threads, Figure 42a / 42b The shedding comb after inserting an auxiliary sub-stick,

Figure 43a / 43b

The swung back Fachbildekamm with deposited on the auxiliary sub-staff upper threads, and

Figure 44a / 44b

The shedding comb after stripping the upper and lower threads on the reel.

Like from the Figures 1 and 2 It can be seen, there is a generally designated 1 warping machine essentially from a warping drum 2 as a bobbin with a cylindrical portion 3 and a conical section 4. The warping drum is mounted about a winding body or drum axis 6 rotatably in a frame 5. A Schärtisch 7 rests on a Schärtischführung 11 and is displaceable on this parallel to the axis of rotation 6 in the direction of arrow c. Arranged on the tendering table 7 is a thread selection device 8, which is also displaceable in the direction of arrow d relative to the warping drum and at right angles to its axis of rotation.

The yarn selection device curves over a segment of, for example, 90 ° around the surface of the warping drum 2. A plurality of yarn guide modules 20, shown only schematically here, are arranged on the yarn selection device in the circumferential direction. From a creel, not shown here, or from another thread dispenser device a yarn sheet 9 is withdrawn, with each individual thread to a the thread guide modules 20 is guided. Suitable facilities, such as thread brakes ensure that the threads always stay tense.

For the shedding for the preparation of crosshairs or for the sizing division at the beginning of a coil, an inner ring 12 is arranged on the cylindrical portion 3 of the warping drum 2, which carries the means for crosshairs or sizing and which rotates together with the drum. The inner ring 12 is guided in drum longitudinal grooves 13 and can be moved along the same as the shear table 7 in the direction of arrow c.

For shedding, especially for crosshairs at the end of a coil, an outer ring 14 is provided which surrounds the drum shell concentric and which is drivable in synchronism with the drum. The outer ring is mounted in an outer ring bearing 15, which in turn is supported on an outer ring slide 16 and linearly displaceable in this direction in the arrow direction c. The outer ring 14 carries the funds required for crosshairs.

In a control cabinet 10, the components are housed to control the warping machine.

FIG. 3 shows a perspective partial view yarn selection with yarn guide modules of a warping machine. The thread selection device 8 has a plurality of thread guide modules, wherein the modules 20 ', 20 ", 20"' and 20 ' ^v are arranged successively in the circumferential direction. In FIG. 3 Furthermore, an inner ring associated Fachbildekamm 40 recognizable, the configuration and operation described in detail later becomes. A yarn guide 21 can be moved or positioned along the drum axis in the direction of arrow e. The movement of the thread guide 21 can take place with a traction mechanism 33. Of course, other means for moving the yarn guide 21 are conceivable, such as pneumatic or hydraulic systems.

The following is based on the FIGS. 4 to 6 a single yarn guide module 20 described in more detail. The module has a holding plate 32, to which a gear unit 33 and a clamping cutting unit 22 are attached. The gear unit has a traction mechanism with a toothed belt 29. The toothed belt can be driven via a yarn guide drive 34, which is preferably a stepper motor. At one of the two parallel Zahnriementrums a yarn guide 21 is attached, which can travel in the direction of arrow e a thread guide section FS. In the rest position RS, the yarn guide 21 is set back behind the clamping-cutting unit. The clamping cutting unit 22 is arranged on a lifting carriage 26 which is mounted displaceably in a guide 35. The drive means is a pneumatic pressure medium cylinder 28.

The clamping-cutting unit has a Doppelhebearm 25 which is articulated on the lifting carriage 26 and the upper lever arm via a pneumatic pressure medium cylinder 27 can be activated. The actual cutting device 24 is formed on the lower lever arm by a cutting edge. Immediately behind the cutting plane is a nip 23, which is also activated via the Doppelhebearm 25.

The supplied work thread or stock thread 18/19 is introduced via a thread guide tube 36, which on the side of the Doppelhebelarms so over the nip 23 opens, that the thread is on the thread guide section of the thread guide 21. The thread guide has a notch or groove which prevents the thread from sliding away.

For a better understanding of the following functional description of the yarn guide module 20 is in FIG. 4b also still the drum associated inner Fadenmitnehmer 30 shown. This is not shown here by means means able to detect a clamped in the correct position clamping thread and entrain.

As long as a thread in the in FIG. 5 shown starting position is clamped to a yarn guide module, it serves as a stock thread 19, which can be included at any time as a working thread in the warping process to form a band. This is done according to the FIGS. 7a and 7b the yarn guide 21 is activated so that it covers a part of the yarn guide section FS and first occupies a thread take-up position FM. The lifting carriage 26 is already in the in FIG. 5 illustrated lowered position. The required for the achievement of thread take-up position FM thread supply is withdrawn via the yarn guide tube 36. The rotational movement of the drum is tuned to the movement of the yarn guide 21, that immediately after reaching the thread take-up position FM, the lower Fadenmitnehmer 33 entrains this and every other work thread of the current roll.

Immediately after the secure detection of the thread, the nip 23 is released, so that the working thread with the peripheral speed of the inner Fadenmitnehmers 30 is withdrawn. This situation is in the FIGS. 8a and 8b shown. Until then, all active thread guide modules on the thread selection device are working simultaneously.

Following this, according to the FIGS. 9a and 9b the yarn guide 21 on the yarn guide FS a piece further moved to be read for hitting a crosshair in a shedding comb 40. This shedding process will be described in more detail below. The shedding comb for a crosshair has U-shaped forked comb ends 42, in each of which a single working thread can be deposited. Between the individual comb ends 42 threads can also be stored. As in FIG. 9a is shown symbolically, each yarn guide 21a, 21b, 21c, etc. of sequentially following yarn guide modules is then moved so far in turn, that in each case alternately a working thread is placed on a comb end and between a comb end. After hitting the crosshair and after introducing a partial element in the manner described below, all active yarn guides 21, 21a, 21b, 21c, etc. move their respective working threads to the actual winding position of the belt 17, the width of which is evidently considerably smaller, The yarn guides 21 maintain their relative position to each other now until the end of the roll is reached, the entire yarn selection is moved on the sharpening carriage.

Once the end of a tape roll is reached and as soon as there are formed with similar agents crosshairs, again drive all active yarn guide 21 on an outer thread driving position FM, in which all working threads 18 are passed to an outer thread driver 31 and be entrained by this. This outer thread driver is an outer, the drum concentric surrounding and synchronous with the drum associated with rotating outer ring 14, the in Figure 10a / 10b is shown only symbolically. This "gathering" of the threads is done in preparation for the cutting process, which in the Figures 11a / 11b is shown.

The lifting carriage 26 is driven at each yarn guide module 20 in the upper end position, so that the nip 23 can detect the withdrawn thread. Practically at the same time, the cutting device 24 is activated, on the one hand frees the just-worked working thread 18 from the thread guide 21 and at the same time held back as Vorratsfaden 19 at the nip in the ready position.

How out FIG. 12 it can be seen, the means for hitting a crosshair at the beginning of a coil on the inner ring 12 are arranged. In the FIG. 12 The situation shown corresponds approximately to that according to FIG. 9 , wherein adjacent threads are alternately read in successively arranged shedding combs 40a, 40b. With 30 again symbolically the inner Fadenmitnehmer is indicated. As a result of the alternating over-winding of the shedding combs, a crosshair 50 with an opened shed 51, in which a part element can be introduced, is evidently formed. Of course, the hitting of a crosshair would also occur when using synchronously co-rotating the winding body surrounding ring elements (outer ring, inner ring) in principle in approximately the same way. The sizing division can also take place in approximately the same way. In contrast to crosshair formation, a multiplicity of shedding combs arranged one behind the other must be provided for the sizing division. In addition, the shedding combs are designed differently for sizing (see Figures 28a and 28b ). Further details of a Fachbildemittels are from the FIGS. 13 and 14 seen. The curved shedding comb 40, for example made of plastic material, is fastened to a rotatable comb shank 41. Slidable parallel to the comb shaft, an auxiliary part rod 43 is arranged. At the end of the extended comb shaft 41, a pincer-like sleeve holder 45 is provided which clampingly grips a partial cord sleeve 44. The approximately cylindrical partial cord sleeve has a partial cord spindle 46, which is screwed centrally into the partial cord sleeve, so that an open annular gap 55 remains. On the sub-string spindle 46, a suitable sub-string 49 is wound, which can be removed via the annular gap 55. The sub-line sleeve 44 has on the front side of the auxiliary part of the rod 43 facing side via a connecting element 47, to which the auxiliary sub-rod 43 and the sub-string sleeve 44 can be coupled.

The extended auxiliary part rod 43 thus detects the fixed in the sleeve holder 45 part cord sleeve 44, which otherwise has approximately the same outer diameter as the auxiliary part rod. Subsequently, the sleeve holder 45 is opened, so that the entire peripheral region of the Teilschnurhülse 44 is exposed. This allows a stripping of the split thread assembly from the auxiliary part rod 43 to the withdrawn part cord 49th

Serves a thread scraper 48, the in FIG. 15a is shown and is displaceable in the direction against the Teilschnurhülse 44. The FIGS. 15a / 15b show a shedding comb 40 in the ready position, that is, with radially outwardly projecting comb 42nd The auxiliary sub-bar 43 is still pulled back, so according to FIG. 16 the Fachbildekamm can be wound. In each case, the upper threads 53 are in the U-shaped comb ends 42 and the lower threads 52 are located between the combs directly on the comb shaft 41. The distance between the lower and the upper threads forms the open compartment 51. Depending on the bandwidth of the later warp strip of the entire shedding comb or only a portion thereof is wrapped.

As soon as all active working threads have been read into the shedding comb, the auxiliary section bar 43 is adjusted according to FIG FIG. 17 extended and then the shedding comb 40 is rotated back into its radially inner rest position.

This situation is in FIG. 18 shown. The upper threads 53 now rest directly on the auxiliary part rod 43 and the lower threads 52 still rest on the comb shaft 41. The auxiliary part rod 43 has detected the Teilschnurhülse 44 end and the latter is freed from the sleeve holder 45. Now according to FIG. 19 the Fadenabstreifer 48 are advanced, which strips the lower and the upper threads 52/53 on the Teilschnurhülse 44 addition to the sub-string 49. Subsequently, the thread wiper 48 moves back again and the shedding comb 40 remains in this waiting position FIG. 20 until he is turned off to a new shed education.

The shedding at the end of a roll is done with similar means as at the beginning of the roll, ie also with shedding combs. As already mentioned in the introduction, these upper or outer shedding combs are assigned to the outer ring 14 whose diameter is dimensioned so that it is larger than the largest possible winding diameter. Unlike the beginning of the winding, however, not a partial cord but a flexible partial ligament is introduced into the open thread compartment as a partial element, wherein the design of the compartmentalised part as well as the method steps are not the same as on the inside. According to Figure 21a / 21b a curved shedding comb 40 with comb ends 42 is also arranged on a comb shank 41. The flexible sub-band 54 with its angled End portion 58 is disposed below the comb shaft 41 and can be advanced from the drum inside. An upper auxiliary section bar 56 can also be extended parallel to the comb shaft 41. In addition, a stripper sleeve 57 is provided, which surrounds the entire auxiliary section rod 56. In the illustrated starting position, in turn, lower threads 52 and upper threads 53 are scanned into the shedding comb 40, ie, the thread guides 21 associated with each thread. FIG. 9a ) ensure that the threads assume the correct overwinding position.

According to FIG. 22 the reading-in process is completed and the sub-auxiliary rod 56 is retracted into the open compartment 51. Subsequently, according to Figure 23a / 23b the comb shaft 41 turned off, so that the upper threads 53 are on the auxiliary part rod 56 and the lower threads 52 on the comb shaft 41.

In a next step according to FIG. 24 the stripper sleeve 57 is extended, wherein the lower threads 52 fall on the sub-band 54. The upper threads 53, however, are initially still on the end of the auxiliary part of the rod 56. The end of the auxiliary part bar is aligned approximately with the angled end of the sub-band 54th

As soon as the stripper sleeve 57 travels the last distance, the upper threads 53 fall onto the finished lap, but outside the subband 54 (FIG. FIG. 25 ). Thus, the sub-element is introduced and can be advanced to form a pitch on the next following winding by a winding width. With the help of the end portion 58 thus the thread pitch is maintained. The shedding comb 40 is in turn rotated into the active position for shedding and the auxiliary shank 56 and the shroud 57 are retracted to the starting position (Figure 26). Of course, that can be determined by the FIGS. 21a / 21b to 26 described method also at the beginning of the winding or on the inner ring be applied. Such a procedure is in the Figures 41a / 41b to 44a / 44b shown.

A complete winding process will be described below with reference to the schematic representation FIG. 27 described. The diagram shows from bottom to top ascending the individual winding sequences with a view at right angles to the drum. In the upper third of the image, the viewing direction is tangential to the warping drum 2 with the cylindrical section 3 and the conical section 4, and with an already completed winding 37. The bottom two-thirds of the representation show a practical development of the drum shell in the various operating sequences, with the right Angular position of the drum is specified.

A winding process begins with the presentation phase 60, in which the yarn selection device 8, as described above, transfers the work threads 18 to the drum with the aid of the active yarn guides 21A and brings them into the correct relative position. The diagram shows a total of 6 active yarn guides 21A. In the case of two passive thread guides 21P, the corresponding thread guide modules remain in their neutral standby position, in which the stock threads 19 rest.

In the lower overwinding phase 61, the working threads 18 are read into the lower shedding combs 40 with the aid of the active thread guides 21A. As described above, the split threads are pushed onto the sub-string and then the active thread guides 21A move the threads together on the one hand Bandwidth B of the warp 17 and on the other hand simultaneously to the left at the foot point 38 of the conical section 4. At the end of this process, the drum has a Rotation of 360 ° covered.

Now follows the actual winding phase 62 to build the roll 37, which depending on the thread quality as many drum revolutions Nx360 ° are required until the desired winding height H is reached.

After the winding 37 is completed, the upper overwinding phase 63 follows for reading in the threads in the upper shedding combs 40 on the outer ring 14. For this purpose, the active yarn guides 21A travel further to the left and at the same time again apart to the scanning width. For the shedding and for advancing the sub-band in the open compartments, the drum again requires a full revolution of 360 °.

Subsequently, the yarn guides 21A ride together in a row to transfer the working threads 18 together to the outer Fadenmitnehmer 31, wherein the yarn guide modules cut the work threads and in turn detect by clamping. This action is shown as upper presentation phase 64.

Without stopping the drum can now be wound in the same manner, the next winding, possibly at the Fadenwähleinrichtung 8 other threads are retrieved. Evidently, the inner ring 12, the outer ring 14 and also the thread selection device 8 move to the right by a bandwidth B.

In the Figures 28a and 28b Shedding ridges are shown for the sizing division. With the aid of a first shedding comb 40 '( FIG. 28a ), in each case a first thread is deposited in a comb end 42 'arranged at the beginning of the comb. Further comb ends are arranged at predetermined, periodic distances from each other, whereby each individual threads form a compartment. Because of this Tray is a sub-element, such as an auxiliary sub-bar feasible. A next, second shedding comb 40 "following the first shedding comb ( FIG. 28b ) has combed ends 42 "for a second thread or threads, the comb ends of the second shedding comb being offset by one thread point from the first shedding comb, and the next shedding combs are analogously formed, ie at the third shedding comb the respective comb ends would be one further point offset etc. In the example according to FIG. 28a / b would therefore seven shedding combs for the arbitration necessary.

The FIGS. 29a and 29b show a relatively detailed view of a warping machine 1. In contrast to the warper according to Figure 1/2 the inner ring for shedding is designed such that it concentrically surrounds the drum shell and is drivable synchronously with the drum 2 (instead of being arranged directly on the drum). The inner ring is assigned to a yarn dividing unit designated 82 and the outer ring is assigned to a yarn dividing unit designated 81. Between the units 81 and 82, the thread selecting device 8 is arranged, as is apparent.

FIG. 30 schematically shows the totality of the mechanical function groups on the warper with the associated drive motors, namely essentially the warping drum 2, the frame 5, the shear table 7 and the Fadenwähleinrichtung 8. These come the inner thread-splitting unit 82 with the inner ring 12 and the outer thread-splitting unit 81st with the outer ring 14 with the respective actuating means. The inner ring 12 and the outer ring 14 are each Fachbildekämme 40 are attached. Evidently, both inner ring 12 and outer ring 14 of the warping drum 2 detached elements, but are rotatably driven in synchronism with the warping drum 2.

The schematic representation according to FIG. 31 differs from FIG. 30 essentially in that here the inner thread-splitting unit 82 with the inner ring 12 and the outer thread-splitting unit 81 with the outer ring 14 are designed to be movable separately from one another in the direction of the drum rotation axis 6 (the drives provided for this purpose are designated RAA and RAI). Out FIG. 31 is then seen that the ring elements 12 and 14 are provided in the region of their outer shells with a ring gear, which are rotatably driven via a drive shaft 66. Further recognizable are subbands 54 (54- for the thread pitch at the beginning of a band, 54 ^2- at the end of a band) which are mounted inside the drum, deflected over the end of the drum and parallel to the drum shell are displaced. Recognizable are then the corresponding thread wiper 48. With regard to the thread selection device, the warping machine differs according to FIG. 31 from FIG. 30 in that the thread selection device 8 can be driven separately from the sharpening carriage 7 (drive 77).

The FIGS. 32 and 33 show enlarged sections of the warper 1 according to Figure 29a / 29b , For better visibility of the yarn guide modules 21, however, the inner thread pitch unit was moved outside the image section. Out FIG. 33 the work threads 18 are recognizable and indicated by solid lines. These are wound onto the warping drum 2 during a warping operation. The remaining threads (supply threads) of the yarn sheet 9 are indicated by dashed lines.

From the FIGS. 34 to 36 is a unit for thread pitch with the means for hitting a crosshair and for introducing a partial element shown in detail. An outer thread pitch unit would be the same as the inner thread pitch unit 82 shown here. The thread pitch unit has an annular configuration. It contains a housing 68, in which the inner ring 12 (see FIG. 35 ) is mounted by means of rollers 74. Further, on the side of the housing 68 facing the yarn selection device (not shown), there is provided a link device 73 for activating and moving the shedding comb 40 (pivoting movement), the auxiliary part rod and the thread wiper (in each case translatory movement). Details of the gate device are from the following FIG. 37 recognizable.

As FIG. 37 shows, electrically actuated switches are provided for driving the respective gate assemblies. With a switch 71, the thread scraper 48 can be transferred into the slide assembly 70, whereby it by the rotational movement of the winding body in the f direction from a rest position ( Fig. 37 ) can be moved to an extended position. For this purpose, a pin 76 is arranged on the thread scraper 48, which cooperates with the link arrangement 70. The (in Fig. 37 not visible) auxiliary bar can be moved in the same way with a separate slide switch arrangement. For the necessary two directions of movement (forward, backward) two switches are needed. Another switch 75 is used to produce the pivoting movement for the shedding comb 40 from a rest position to a shed position. This pivoting movement can be done by an electrically actuated cam control. Of course, other means could be used to drive and move the shedding comb, the auxiliary bar and / or the Fadenabstreifers, in particular, the means (instead of from outside) could also be arranged directly in or on said elements.

In Figure 38 a thread-splitting unit 82 is shown in a side view. Here, for example, a pin 77 can be seen, with which the pivoting movement of the shedding comb 40 can be performed. The shedding comb 40 shown here is characterized in that it has an auxiliary comb element 65. With this auxiliary comb element, a sub-band can be moved by means of a pulling movement. A corresponding procedure is based on the Figures 39a / 40b (Top view), 39b / 40b (side view) and 39c / 40c (end view). The show Figures 39 the Fachbildekamm 40 in a Fachbildestellung. Now, if the shedding comb 40 is transferred by a pivoting movement in a rest position, the shedding comb comes into engagement with the end portion 58 of the sub-belt 54. This sub-band is preferably introduced at the beginning of a tape roll. If now moves the shedding comb of a tape roll to a next tape roll in the direction of arrow c, the sub-band 54 is automatically pulled along. The auxiliary comb member 65 serves as a stop for the end portion 58. Of course, could be dispensed depending on the configuration of Fachbildekamms on a Hilfskammelement. A subband for the end of a tape reel can be moved in a similar manner. In the case of the outer thread-splitting unit, the displacement of the outer sub-band would advantageously be effected by a shock movement. A hanging like in the Figures 39 and 40 would not be necessary.

As Figure 44a shows, the sub-band 54 could be pulled along with the help of the thread scraper 48 when changing the band.

Claims (19)

1. Method for dividing yarns on a warping machine (1) comprising a wound package (2) for winding a ribbon lap consisting of a plurality of yarns (18), characterised in that, when the wound package is rotating, a shed for beating a lease or for size division is formed in particular at the start and/or at the end of a ribbon lap comprising at least a portion of the yarns at at least one position in a peripheral region of the wound package (2) and in that a dividing member, in particular a lease cord (49) or an auxiliary lease rod (56, 43) is inserted into the opened shed (51).
2. Method according to claim 1, characterised in that the shed is formed using shedding combs (40, 40a, 40b) arranged in the peripheral region of the wound package (2), which shedding combs rotate together or synchronously with the wound package (2).
3. Method according to claim 1, characterised in that the shed is formed by laying yarns (18) on shedding combs (40, 40a, 40b) which are arranged on a ring member (12, 14) which surrounds and rotates synchronously with the wound package (2).
4. Method according to any one of claims 1 to 3, characterised in that the shed is formed at the start of a ribbon lap by laying yarns (18) on shedding combs (40a, 40b) which are arranged on the wound package (2).
5. Method according to claim 3, characterised in that the shed is formed at the start and at the end of a ribbon lap by analogous means, the ring member being an inner ring (12) for dividing the yarns at the start of the ribbon lap and an outer ring (14) for dividing the yarns at the end of the ribbon lap.
6. Method according to any one of claims 1 to 5, characterised in that for beating the lease (50) at least two shedding combs (40a, 40b) arranged in tandem relative to the peripheral direction are moved from a idle position approximately tangential to the outer periphery into a shedding position, in which the comb ends (42) project outwards from the outer periphery in a radial direction and in that, in the course of a ribbon lap rotation, the yarns (18) are preferably laid alternately on the comb ends (42) and between the comb ends.
7. Method according to claim 6, characterised in that an auxiliary lease rod (43) is guided into the open shed, in that the shedding comb (40a) forming the shed (51) in question is thereafter moved back into the idle position and in that the yarns (52, 53) divided by the auxiliary lease rod are finally stripped off onto a dividing member, preferably onto a lease cord (49) or onto a lease band (54).
8. Method according to claim 7, characterised in that a plurality of ribbon laps with the same yarn repeat or different yarn repeats are wound together or next to one another on the wound package (2), the wound package rotating continuously, and in that the lease band (54) is moved by the shedding comb (40a, 40b) from one ribbon lap to a subsequent ribbon lap by means of a pushing or pulling movement.
9. Device for dividing yarns on a warping machine (1) comprising a wound package (2) for winding a ribbon lap consisting of a plurality of yarns (18), in particular for carrying out the method according to any one of claims 1 to 8, characterised in that means for beating a lease and for inserting a dividing member into a shed opened by the lease when the wound package is rotating are arranged at at least one position on the peripheral region of the wound package (2).
10. Device according to claim 9, characterised in that the means for beating the lease have at least two shedding combs (40a, 40b) arranged in tandem relative to the peripheral direction and approximately parallel to one another, which are movable by means of a rotating movement from an idle position approximately tangential to the outer periphery into a shedding position, in which the comb ends (42) project outwards from the outer periphery in a radial direction, it being possible to lay the yarns alternately on the comb ends and between the comb ends by means of the yarn guide (21).
11. Device according to claim 9 or claim 10, characterised in that an auxiliary lease rod (43) is allocated to at least the shedding comb (40a) which forms the comb (51) in question and, for inserting the dividing member, can be guided into the opened shed (51) in a manner parallel to the shedding comb.
12. Device according to claim 11, characterised in that the dividing member is a lease cord which can be removed from a preferably cylindrical lease cord magazine which is held on the movement axis of the auxiliary lease rod (43) in proximity to the shedding comb (40a) and in that a yarn wiper (48) is arranged in proximity to the auxiliary lease rod, with which yarn wiper the stentered yarns (52, 53) can be displaced over the auxiliary lease rod, which is attached at one end to the lease cord magazine, and over the lease cord magazine onto the lease cord.
13. Device according to claim 11, characterised in that a lease band (54) which can be displaced parallel to the wound package casing runs on the wound package (2) and has an end portion (58) which projects outwards from the outer periphery in a radial direction and in that a yarn wiper (48) is arranged in proximity to the auxiliary lease rod, with which yarn wiper the stentered separated yarns (52, 53) can be displaced from the auxiliary lease rod onto the lease band (54), it being possible to maintain the division of the yarns using the end portion (58).
14. Device according to claim 13, characterised in that the lease band (54) is a flexible lease band (54), which is mounted in the interior of the drum, can be deflected over the end of the drum and can be displaced parallel to the wound package casing.
15. Device according to any one of claims 9 to 14, characterised in that it comprises at least one ring member which surrounds and can be rotatably driven synchronously with the wound package, at at least one position on the peripheral region of which ring member the means for beating a lease when the wound package is rotating are arranged, the ring member being an inner ring (12) for dividing the yarns at the start of a ribbon lap and/or an outer ring (14) for dividing the yarns at the end of a ribbon lap.
16. Device according to any one of claims 9 to 15, characterised in that the means for beating a lease at the start of a ribbon lap are allocated to the wound package, these being arranged on an inner ring (12) which can be displaced on the surface of the wound package and which can be displaced synchronously or asynchronously with an outer ring (14) for dividing the yarns at the end of a ribbon lap, which outer ring surrounds and can be rotatably driven by the wound package.
17. Device according to either claim 15 or claim 16, characterised in that the ring member (12, 14) is provided in the region of its outer casing with a gear ring which can be rotatably driven synchronously with the wound package (2) by a drive shaft (66).
18. Device according to any one of claims 15 to 17, characterised in that means are provided for displacing the auxiliary lease rod (43) into an open shed and/or out of an open shed and are operatively connected to an auxiliary lease rod guide arrangement (70) which surrounds the wound package and can be controlled by switches (71), and/or means are provided for displacing the yarn wiper (48) and are operatively connected to a yarn wiper guide arrangement, which surrounds the wound package and can be controlled by switches.
19. Device according to any one of claims 15 to 18, characterised in that means are provided for rotating the shedding combs (40, 40a, 40b) from the idle position into the shedding position and vice versa and can be mechanically controlled by means of a cam control system which can be operated electrically.

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