DE102021006003A1 - Device for producing a mixed thread - Google Patents

Abstract

The invention relates to a device (100) for producing a mixed thread (10) from at least a first partial thread (1) and a second partial thread (2), the device (100) having a displacement unit (4) which is positioned between a first thread feed ( 11) and an inlet godet (30), the displacement unit (4) forming a contact area (5) with the first partial thread (1), within which the first partial thread (1) touches the displacement unit (4), and the displacement unit ( 4) is movable for shifting the first partial thread (1) relative to the second partial thread (2) and relative to the inlet godet (30) such that when the shifting unit (4) moves, an average vertical speed component of the shifting unit (4) perpendicular to a running direction (21) of the first partial thread (1), within the contact area (5) is greater than an average parallel speed component of the displacement unit (4), which is aligned parallel to the running direction (21) of the first partial thread (1). is.

Description

The invention relates to a device for producing a mixed thread from at least a first partial thread and a second partial thread and a method for producing a mixed thread.

It is known to form a mixed thread by merging several partial threads. If a multicolored yarn is to be produced from the mixed thread, for example by means of a texturing of the mixed thread, the individual partial threads have different colors. Depending on how the individual partial threads are arranged in relation to one another in the mixed thread, the multicolored yarn can appear differently.

It is also known to guide the respective partial threads of the partial threads from a respective thread feed to an inlet godet, with the individual partial threads being brought together to form the mixed thread with the aid of the inlet godet. Devices are also known which make it possible to change the arrangement of the individual partial threads relative to one another at a predetermined frequency before they enter the entry godet. As a result, a color change within the multicolored yarn can be controlled. Such a device is for example in EP 0 133 198 B1 described. A grooved roller is described therein, which has a groove with a pitch. Two of the three partial threads are guided in the groove. When the grooved roller rotates, these two partial threads are oscillated relative to a third partial thread of the mixed thread at a frequency that is determined by the rotational speed of the grooved roller. A maximum deflection of the first and second partial threads relative to the third partial thread is specified by a slope of the groove in the grooved roller. The grooved roller is arranged in front of the entry godet, so that the arrangement of the three partial threads relative to one another in the mixed thread can be changed depending on the alternating frequency.

Another device in which individual partial threads can be moved to one another in an alternating arrangement is in EP 0 557 765 B1 described. Here, the individual partial threads are shifted relative to one another via respective cams. In this case, a single partial thread is pulled back by a thread tensile force. The thread tension is dimensioned in such a way that the respective partial threads can always be in contact with the respective cams.

A device for producing a mixed thread from at least a first partial thread and a second partial thread is proposed. The device has a first thread feed for feeding in the first partial thread, a second thread feed for feeding in the second partial thread and an inlet godet for merging the first partial thread with the second partial thread to form the mixed thread. The first partial thread runs from the first thread feed to the inlet godet. The second partial thread runs from the second thread feed to the inlet godet.

Furthermore, the device has a displacement unit, which is arranged between the first thread feed and the inlet godet. The displacement unit forms a contact area with the first partial thread, within which the first partial thread touches the displacement unit. Furthermore, the displacement unit for displacing the first partial thread relative to the second partial thread and relative to the inlet godet is movable in such a way that when the displacement unit is moved, an average vertical speed component of the displacement unit within the contact area is greater than an average parallel speed component of the displacement unit. The mean vertical velocity component of the displacement unit is oriented perpendicular to a running direction of the first partial thread. The mean parallel velocity component of the displacement unit is aligned parallel to the running direction of the first partial thread.

The inlet godet is designed to bring the first and second partial threads together, preferably also a third partial thread, in such a way that the first and second partial threads or the first, second and third partial threads leave the intake godet in a side-by-side manner. Arranged side by side means that the first and the second partial thread or the first, second and third partial thread move at approximately the same speed and in the same direction. In the context of this disclosure, the mixed thread is understood to mean an arrangement of the first and second partial threads or the first, second and third partial threads, in which the first and second partial threads or the first, second and third partial threads are located next to one another. The first and second partial threads or the first, second and third partial threads can touch each other while they move together side by side in the form of the mixed thread. In most cases, the mixed thread is processed further in order to connect the partial threads with one another in a non-positive, positive and/or material connection and to produce the multicolored yarn. For example, the mixed thread can be textured and/or chemically treated.

The godet advantageously has a guide jacket that can be driven in rotation. In particular, the inlet godet is formed at a Rotation of the guide sheath to guide the first and second partial threads or the first, second and third partial threads next to one another. Such guiding of the partial threads with the aid of the inlet godet preferably predetermines the arrangement of the partial threads relative to one another during further processing of the mixed thread. The arrangement of the partial threads in relation to one another in an outlet of the inlet godet is predetermined by the arrangement of the partial threads in relation to one another in a receiving area of the inlet godet. The first and the second part thread or the first, second and third part thread are taken up in the receiving area of the inlet godet with the help of the guide jacket of the inlet godet. It is possible for the guide casing to have a circumferential groove for bringing the partial threads together.

The first and second thread feed can be, for example, an output of a respective spinning device; the respective spinning device is designed, for example, to extrude and combine the first or second partial thread from a multiplicity of filament strands. It is also possible for the first and second thread feeds to be designed in the form of a respective template spool. In this case, the first and second partial threads are each fed to the inlet godet by unrolling the respective feed spool.

The displacement unit is arranged between the first thread feed and the entry godet in such a way that the displacement unit can shift the first partial thread in a direction parallel to an axis of rotation of the entry godet. The second partial thread runs, in particular without contact, past the displacement unit to the inlet godet. When the displacement unit moves, the first partial thread can be displaced in relation to the guide jacket of the inlet godet in such a way that a first pick-up point, at which the guide jacket receives the first partial thread, can be displaced parallel to the axis of rotation of the inlet godet. A second pick-up point, at which the guide casing of the inlet godet picks up the second partial thread, is essentially stationary. In particular, a position of the second receiving point is independent of a position of the displacement unit, in particular a contact surface of the displacement unit. This means that by moving the displacement unit, the first partial thread can be displaced in relation to the second partial thread in such a way that an arrangement of the first partial thread and the second partial thread relative to one another on the guide sheath can be changed.

If you look at the guide sheath, a first arrangement can be given by the fact that the first partial thread runs to the left of the second partial thread on the guide sheath, and a second arrangement can be determined by the first partial thread running to the right of the second partial thread on the guide sheath . A change in the state of the device can be brought about by moving the displacement unit, the device having the first arrangement of the partial threads relative to one another in a first state and the second arrangement of the partial threads relative to one another in a second state. In particular, the device is set up to permanently drive the displacement unit. In a special embodiment, permanent driving of the displacement unit causes the device to change periodically from the first state to the second state and from the second state to the first state. The displacement unit preferably has the contact surface on which the first partial thread touches the displacement unit. As a rule, a movement of the displacement unit causes a movement of the contact surface. In many cases, the contact area moves relative to the contact area. In particular, a movement of the displacement unit causes a movement of the contact surface.

For the sake of simplicity, the first and second partial threads are each assumed to be linear. The contact area can therefore be understood as a line on the contact surface. If a thickness of the first partial thread is also considered, the contact area can be viewed as a thin strip on the contact surface, which has a thickness that corresponds to the thickness of the first partial thread.

The running direction of the first partial thread is essentially predetermined by a first direction, which runs from the first thread feed to the inlet godet. The averaged vertical velocity component of the translation unit is perpendicular to the direction of travel of the first filament, and the averaged parallel velocity component of the translation unit is oriented parallel to the direction of travel of the first filament. The average vertical velocity component of the shuttle is in most cases equal to an average vertical velocity component of the contact surface of the shuttle. Similarly, the averaged parallel velocity component of the displacement unit is preferably equal to an averaged parallel velocity component of the contact surface of the displacement unit.

The mean vertical velocity component of the displacement unit is understood to mean a vertical velocity component of the displacement unit averaged over the contact area. Similarly, under the averaged parallel velocity component of the translation unit, there is one over the contact area understood parallel velocity component of the displacement unit. When the contact portion is formed in a line shape as described above, the average vertical velocity component of the shuttle can be calculated by taking an integral of the vertical velocity component of the shuttle over the contact line.

In an analogous manner, the mean parallel velocity component of the translation unit can be calculated using an integral of the parallel velocity component of the translation unit over the contact line. According to a preferred embodiment, the average vertical velocity component of the displacement unit is equal to a quotient of a first integral of the vertical velocity component of the displacement unit over the contact line and a length of the contact line. Similarly, the average parallel velocity component of the translation unit is equal to a second quotient of a second integral of the parallel velocity component of the translation unit over the line of contact and a length of the line of contact.

Due to the fact that the averaged perpendicular velocity component of the displacement unit is greater than the averaged parallel velocity component of the displacement unit, an influence of the displacement unit on the first partial thread in the running direction of the first partial thread can be reduced. In general, the greater the speed difference between the displacement unit within the contact area and the first partial thread in the direction of travel of the first partial thread, the more the first partial thread is accelerated parallel to the travel direction of the first partial thread. As a rule, however, an acceleration of the first partial thread parallel to the running direction of the first partial thread through the displacement unit is undesirable. This is mainly due to the fact that the second partial thread runs past the displacement unit and is brought together with the first partial thread to form the mixed thread at the inlet godet. It is generally desirable for the first partial thread to have approximately the same speed in the direction of its running direction as the second partial thread in the direction of a running direction of the second partial thread.

A displacement of partial threads, as in the EP 0 557 765 B1 is described, with the help of cams causes an average speed component of a contact surface of the cam, which is aligned parallel to a direction of travel of the partial threads, is generally significantly greater than an average vertical speed component of the cam, which is perpendicular to the respective direction of travel of the partial threads is aligned. Each time the cam deflects one of the partial threads, the respective partial thread is accelerated by the cam parallel to the running direction of the respective partial thread. Such an effect can be reduced with the device according to the invention.

In a preferred embodiment, the contact area is formed on a first side of the first partial thread. According to this embodiment, a second side of the first partial thread, which is opposite the first side, runs freely along the displacement unit. Accordingly, in this configuration, the displacement unit touches the first partial thread on one side.

Because the second side of the first partial thread runs freely along the displacement unit, friction between the displacement unit, in particular the contact surface, and the first partial thread can be reduced. A reduction in the friction between the displacement unit and the first partial thread reduces in particular the risk of the first partial thread tearing.

According to a particular embodiment, the displacement unit for displacing the first partial thread is mounted such that it can rotate about an axis of rotation of the displacement unit. The displacement unit preferably has the contact surface on which the first partial thread touches the displacement unit, the contact surface being oriented at an angle to the axis of rotation of the displacement unit. As a result, when the displacement unit is rotated about the axis of rotation of the displacement unit, the first partial thread can be displaced in relation to the second partial thread and in relation to the inlet godet in a direction parallel to the axis of rotation of the displacement unit.

Because the contact surface is aligned obliquely to the axis of rotation of the displacement unit, the first partial thread can be displaced parallel to the axis of rotation of the displacement unit when the displacement unit rotates about the axis of rotation of the displacement unit. The displacement of the first partial thread in relation to the inlet godet can be compared to a shift of partial threads using the in the EP 0 557 765 B1 cams described have a softer course over time when the first partial thread is shifted parallel to the axis of rotation of the displacement unit. In particular, this can increase precision in the production of the mixed thread. Compared to a linear movement of the displacement unit for displacing the first partial thread, the displacement of the first partial thread, which can be triggered by the rotation of the displacement unit, has the following additional advantage. Since the displacement unit is preferably constantly rotated in the same direction of rotation, jerking of the device can be significantly compared to of a construction in which the first partial thread can be shifted by moving the shifting unit back and forth. As a result, the service life of the device and the precision in the production of the mixed thread can be increased.

It has turned out to be particularly advantageous if the contact surface is aligned obliquely to the axis of rotation of the displacement unit and if the displacement unit touches the first partial thread on one side. As described above, the latter can be realized in that the contact area, in particular the contact surface, is arranged on the first side of the first partial thread and the second side of the first partial thread runs freely along the displacement unit. Running freely along the second side of the first partial thread means that the second side of the first partial thread does not touch the displacement unit. As a result, a number of contact points between the first partial thread and the displacement unit, in particular compared to that in FIG EP 0 133 198 B1 described comb roll, are reduced. A reduction in the contact points can, on the one hand, reduce the friction between the displacement unit and the first partial thread and, on the other hand, reduce the risk of the first partial thread tearing.

The displacement of the first partial thread in relation to the second partial thread and in relation to the inlet godet in the direction parallel to the axis of rotation of the displacement unit also has the advantage that friction conditions between the displacement unit and the first partial thread are reduced compared to a displacement of the first partial thread with the help of the Cams fluctuate less strongly over a period of time within which the displacement unit moves. For example, a ratio of the averaged perpendicular velocity component of the displacement unit and the averaged parallel velocity component of the displacement unit fluctuates less within the contact area. This is due in particular to the fact that in the case of the cam the first partial thread is displaced in the radial direction in relation to an axis of rotation of the cam, while in the device according to the invention the first partial thread can be displaced parallel to the axis of rotation of the displacement unit.

In principle, the proposed device makes it possible for the ratio between the vertical and the parallel speed component of the displacement unit to be approximately constant during a complete rotation of the displacement unit. As a result, the first partial thread can be fed to the inlet godet at an approximately constant speed, which can increase the precision of the production of the mixed thread.

In a development, the device has a guide element that extends along the axis of rotation of the displacement unit. In this further development, the first partial thread is in contact with a surface of the guide element in order to generate a pretension of the first partial thread and to guide the first partial thread.

The guide element is preferably arranged between the first thread feed and the inlet godet. In particular, a first part of the first partial thread, which extends from the first thread feed to the guide element, forms an obtuse angle with a second part of the first partial thread, which extends from the guide element towards the inlet godet. The guide element preferably guides the first partial thread in such a way that the first partial thread touches the contact surface of the displacement unit. This is achieved in particular in that the guide element extends along the axis of rotation of the displacement unit. Due to the fact that the first partial thread rests against the surface of the guide element, the first partial thread is tensioned, as a result of which the pretension of the first partial thread is produced. The pretensioning of the first partial thread has the effect that a relative movement of the first partial thread in relation to the displacement unit can be reduced. If this relative movement is reduced, a global position of the contact area can be kept approximately constant during the rotation of the displacement unit. As a result, the precision in the production of the mixed thread can be further increased. This can be due in particular to the fact that the ratio between the vertical and the parallel velocity component of the displacement unit changes less within the contact area the less the contact area is displaced. In principle, it would also be possible to generate the pretension by the displacement unit itself. However, this would have the disadvantage that the risk of tearing the first partial thread could be increased. However, a risk of tearing caused in this way can be reduced by tensioning the first partial thread with the aid of the guide element.

Advantageously, the guide element is designed in the form of a cylinder with a lateral surface, with the first partial thread lying against the lateral surface of the cylinder. Furthermore, a curvature of the lateral surface is generally significantly higher than a curvature of the contact surface in an outer region of the contact surface.

In a special embodiment, the displacement unit is designed in the form of a hollow cylinder. The hollow cylinder is delimited by the contact surface on a side of the displacement unit that faces the first partial thread, in particular in the direction of the axis of rotation of the displacement unit and delimited in the radial direction by an inner lateral surface of the hollow cylinder and an outer lateral surface of the hollow cylinder.

Due to the fact that the hollow cylinder is delimited in the radial direction by the inner lateral surface, the contact area is also delimited by the inner lateral surface of the hollow cylinder. The effect of this is that the first partial thread can run freely past the displacement unit in an area that lies between the inner lateral surface of the hollow cylinder. On the one hand, this reduces the friction between the first partial thread and the displacement unit. On the other hand, the ratio between the averaged perpendicular velocity component of the displacement unit and the averaged parallel velocity component of the displacement unit can thereby be increased. An influence of the displacement unit on the running speed of the first partial thread can be reduced as a result. As a result, a smoother yarn path is realized towards the inlet godet, which can further increase the precision of the production of the mixed yarn.

Furthermore, the hollow cylinder has the advantage that the guide element can protrude into an inner area of the displacement element, i.e. in this case the hollow cylinder. This makes it possible to easily rotate the displacement element and the guide element together in a bearing housing.

Furthermore, it has been found to be particularly advantageous if the contact surface is designed in the form of a flat surface, with the contact surface having the same angle to the axis of rotation of the displacement unit at every point on the flat surface. If, in addition, the displacement unit is designed in the form of a hollow cylinder, the contact surface can be described in the form of a circular ring, which is arranged at an angle to the axis of rotation of the displacement unit. The displacement unit can be produced, for example, by milling a hollow shaft. When rotating, the hollow cylinder can also be understood as a kind of swash plate.

According to a particularly advantageous embodiment of the device, a gap is provided between the inner lateral surface of the hollow cylinder and the guide element. This makes it possible to produce the displacement unit and the guide element in the form of a single ceramic component. Accordingly, according to a preferred embodiment, the displacement unit and the guide element are each designed in the form of a single ceramic component. If the displacement unit is designed in the form of a first ceramic component, the contact surface can be provided as a particularly smooth surface to reduce the friction between the first partial thread and the displacement unit. If the guide element, in particular in the form of the cylinder or hollow cylinder, is designed in the form of a second ceramic component, friction between the first partial thread and the guide element can also be reduced. Manufacturing the displacement unit and the guide element in the form of a one-piece ceramic component has proven to be difficult from a manufacturing point of view.

In a preferred embodiment, the second partial thread is movable in at least one direction parallel to the axis of rotation of the inlet godet. For example, the second partial thread can be guided in a displaceable eyelet of the device for this purpose. According to a different embodiment, the second partial thread is preferably guided in such a way that the second partial thread is immovable in at least the direction parallel to the axis of rotation of the inlet godet.

In an advantageous embodiment, the device is set up to produce the mixed thread from the first partial thread, the second partial thread and a third partial thread. In this configuration, the device has a third thread feed for feeding in the third partial thread. The third partial thread runs from the third thread feed towards the inlet godet. The displacement unit is preferably arranged between the third thread feed and the inlet godet, with the third partial thread touching the contact surface of the displacement unit.

This configuration makes it possible in a simple manner to periodically shift the first partial thread and the third partial thread in relation to the second partial thread by rotating the displacement unit and thus to periodically change the order of all partial threads, i.e. the first, second and third partial threads, in the mixed thread change.

The third partial thread is advantageously in contact with the guide element. In this case, the guide element guides both the first partial thread and the third partial thread in such a way that both touch the contact surface of the displacement unit. The third partial thread is preferably in contact with a side of the guide element which is opposite a further side of the guide element on which the first partial thread is in contact. Accordingly, the guide element can be designed to separate these two partial threads from one another in a region of the displacement unit.

In a preferred development, the device for producing the mixed thread from the first partial thread, the second partial thread and set up a third partial thread. According to this development, the device has a third thread feed for feeding in the third partial thread and a further displacement unit. The further displacement unit is preferably arranged between the third thread feed and the inlet godet. The third partial thread runs from the third thread feed towards the inlet godet. Furthermore, the further displacement unit advantageously forms a further contact area with the third partial thread. The third partial thread touches the further displacement unit within the further contact area. The additional displacement unit for displacing the third partial thread is preferably movable relative to the second partial thread in such a way that when the additional displacement unit moves, an averaged vertical speed component of the additional displacement unit within the additional contact area is greater than an averaged parallel speed component of the additional displacement unit. The average vertical speed component of the further displacement unit is aligned perpendicular to a running direction of the third partial thread. The mean parallel speed component of the further displacement unit is aligned parallel to the direction of travel of the third partial thread.

The further contact area is advantageously formed on a first side of the third partial thread. A second side of the third partial thread, which is opposite the first side of the third partial thread, preferably runs freely along the further displacement unit, so that the further displacement unit touches the third partial thread on one side.

The further shifting unit makes it possible to shift the third partial thread independently of the first partial thread parallel to the direction of rotation of the inlet godet. As a result, an arrangement of the first partial thread relative to the second partial thread can be specified independently of an arrangement of the third partial thread relative to the second partial thread. This makes it possible to use the mixed thread to produce a carpet whose colored arrangement of the individual partial threads in the mixed thread can be freely selected and the color appearance of the carpet can therefore also be freely adjusted.

In practical terms, the device has a control unit for controlling the displacement unit and the further displacement unit. The control unit is preferably set up to control a movement of the displacement unit and a movement of the further displacement unit independently of one another.

In a preferred embodiment it is provided that the device has a linear drive and the displacement unit can be driven with the aid of the linear drive. In this embodiment, the displacement unit is preferably mounted in such a way that a movement of the displacement unit parallel to the running direction of the first partial thread is blocked. Provision is preferably made for the linear drive to be coupled to the displacement unit in such a way that a movement of the linear drive causes a translational movement of the contact surface.

Practically, the linear drive has an electric motor and also has a gear that converts a rotational movement of the electric motor into a translational movement of a control element of the linear drive. The control element is preferably directly or indirectly mechanically coupled to the contact surface. The gear can be designed, for example, in the form of a ball screw gear or a roller screw gear. According to a further embodiment, the linear drive can be designed in the form of a hydraulic cylinder or a pneumatic cylinder. In this embodiment, at least one end of the hydraulic cylinder or the pneumatic cylinder is preferably mechanically coupled to the displacement unit, in particular the contact surface.

According to a further embodiment, the linear drive can be designed in the form of an electromechanical linear drive. In this embodiment, the linear drive can have a linear motor with an electrodynamic principle of action or a linear actuator with a piezoelectric, electrostatic, electromagnetic, magnetostrictive or thermoelectric principle of action. Analogously, this embodiment preferably provides that the displacement unit, in particular the contact surface, is mechanically coupled to the linear motor or linear actuator in order to move the contact surface in a translatory manner with the aid of the linear drive. The displacement unit advantageously touches the first partial thread on one side, as described above, if the displacement unit can be driven with the aid of the linear drive.

In a preferred embodiment, the linear drive has a crank mechanism. A rotary movement of a motor of the device can be converted into a linear movement of the displacement unit with the aid of the crank drive. This configuration represents a particularly cost-effective way of providing the linear drive.

The additional displacement unit described above can preferably be driven with the aid of an additional linear drive. In this case, the device also has the further linear drive. Furthermore, it can be provided that the further displacement unit has a further contact surface has, at which the third partial thread touches the further displacement unit. The further contact surface is oriented obliquely to an axis of rotation of the further displacement unit, in order, when the further displacement unit rotates about the axis of rotation of the further displacement unit, to shift the third partial thread in relation to the second partial thread and in relation to the inlet godet in a direction parallel to the rotational axis of the to effect another displacement unit. In principle, the further displacement unit can be designed according to one or more of the variants of the displacement unit described above.

Independently of the device described so far, a further device for producing a mixed thread from at least a first partial thread and a second partial thread is proposed. The further device has a first thread feed for feeding in the first partial thread, a second thread feed for feeding in the second partial thread and an inlet godet for merging the first partial thread with the second partial thread to form the mixed thread. The first partial thread runs from the first thread feed to the inlet godet. The second partial thread runs from the second thread feed to the inlet godet.

The further device has a displacement unit which is arranged between the first thread feed and the inlet godet of the further device. The displacement unit of the additional device has a contact surface on which the first partial thread touches the displacement unit of the additional device. Furthermore, the shifting unit of the further device for shifting the first partial thread is rotatably mounted about a further axis of rotation. The contact surface of the displacement unit of the further device is preferably aligned obliquely to the further axis of rotation, so that when the displacement unit of the further device rotates about the further axis of rotation, a displacement of the first partial thread in relation to the second partial thread and in relation to the inlet godet in a parallel direction to cause further axis of rotation.

In a further development, the further device has a guide element which extends along the further axis of rotation of the displacement unit of the further device. In this development, the first partial thread rests against a surface of the guide element of the further device for generating a pretension of the first partial thread and for guiding the first partial thread.

In a special embodiment, the displacement unit of the further device is designed in the form of a hollow cylinder. The hollow cylinder is delimited by the contact surface on a side of the displacement unit of the further device facing the first partial thread and delimited in the radial direction by an inner lateral surface of the hollow cylinder and an outer lateral surface of the hollow cylinder.

In an advantageous embodiment, the further device is set up for producing the mixed thread from the first partial thread, the second partial thread and a third partial thread. In this configuration, the further device has a third thread feed for feeding in the third partial thread. The third partial thread runs from the third thread feed towards the inlet godet of the further device. The displacement unit of the additional device is preferably arranged between the third thread feed and the inlet godet of the additional device, with the third partial thread touching the contact surface of the displacement unit of the additional device.

Furthermore, a method for producing a mixed thread from at least a first partial thread and a second partial thread is proposed. The first partial thread is guided from the first thread feed to the inlet godet. The inlet godet brings the first part thread together with the second part thread to form the mixed thread. The second partial thread is guided from the second thread feed to the inlet godet. Furthermore, the first partial thread is guided along the displacement unit. The displacement unit can be designed according to one of the variants described above. The displacement unit is arranged between the first thread feed and the inlet godet, so that the first partial thread touches the contact surface of the displacement unit. In the proposed method, the displacement unit is rotated about an axis of rotation of the displacement unit in order to effect a displacement of the first partial thread in a direction parallel to the axis of rotation.

Furthermore, another method for producing a mixed thread from at least a first partial thread and a second partial thread is proposed. The first partial thread is guided from the first thread feed to the inlet godet. The inlet godet brings the first part thread together with the second part thread to form the mixed thread. The second partial thread is guided from the second thread feed to the inlet godet. Furthermore, the first partial thread is guided along the displacement unit. The displacement unit can be designed according to one of the variants described above. In the further method, the first partial thread is guided along a displacement unit, which is arranged between the first thread feed and the inlet godet, so that the displacement unit forms a contact area with the first partial thread, within which the first partial thread the Ver sliding unit touched. The displacement unit for displacing the first partial thread is preferably moved relative to the second partial thread and relative to the inlet godet in such a way that when the displacement unit is moved, an average vertical speed component of the displacement unit, which is aligned perpendicular to a running direction of the first partial thread, is greater within the contact area as an average parallel speed component of the displacement unit, which is oriented parallel to the running direction of the first partial thread.

The invention is explained in more detail below using some exemplary embodiments of the device according to the invention with reference to the accompanying drawings. It show schematic

• 1 eine Seitenansicht einer erfindungsgemäßen Vorrichtung mit einer ersten Fadenzufuhr, einer zweiten Fadenzufuhr, einer Verschiebeeinheit und einer Einlaufgalette;
• 2 eine Draufsicht der in 1 gezeigten Einlaufgalette bei einem ersten Zustand der Vorrichtung 100;
• 3 eine Draufsicht der in 1 gezeigten Einlaufgalette bei einem zweiten Zustand der in 1 gezeigten Vorrichtung;
• 4 eine weitere Seitenansicht der in 1 gezeigten Vorrichtung in dem ersten Zustand der Vorrichtung;
• 5 die in 4 gezeigte weitere Seitenansicht der in 1 Vorrichtung in dem zweiten Zustand der Vorrichtung;
• 6 eine Seitenansicht eines Ausführungsbeispiels der in 1 gezeigten Verschiebeeinheit in dem ersten Zustand der in 1 gezeigten Vorrichtung;
• 6a eine weitere Seitenansicht der in 6 gezeigten Ausführungsform der Verschiebeeinheit;
• 7 die in 6 gezeigte Ausführungsform der Verschiebeeinheit in einem zweiten Zustand der in 1 gezeigten Vorrichtung in einer Seitenansicht;
• 7a die in 7 gezeigte Ausführungsform der Verschiebeeinheit in dem zweiten Zustand der in 1 gezeigten Vorrichtung in einer weiteren Seitenansicht;
• 8 eine weitere Ausgestaltung der in 1 gezeigten Verschiebeeinheit in einer Seitenansicht in dem ersten Zustand der in 1 gezeigten Vorrichtung;
• 9 die in 8 gezeigte weitere Ausführungsform der in 1 gezeigten Verschiebeeinheit in dem zweiten Zustand der in 1 gezeigten Vorrichtung;
• 10 eine perspektivische Ansicht der in 8 gezeigten weiteren Ausgestaltung der in 1 gezeigten Verschiebeeinheit in dem ersten Zustand der in 1 gezeigten Vorrichtung;
• 11 eine weitere Ausgestaltung der in 10 gezeigten Ausführungsform der in 1 gezeigten Vorrichtung mit einem Führungszylinder zur Erzeugung einer Vorspannung eines in 1 gezeigten ersten Teilfadens;
• 12 die in 1 gezeigte Vorrichtung mit einer zusätzlichen dritten Fadenzufuhr;
• 13 einen ersten Zustand der in 12 gezeigten Variante der in 1 gezeigten Vorrichtung;
• 14 einen zweiten Zustand der in 12 gezeigten Variante der in 1 gezeigten Vorrichtung;
• 15 eine perspektivische Ansicht einer Variante der in 12 gezeigten Vorrichtung mit einem Hohlzylinder als Verschiebeeinheit zum Verschieben von zwei Teilfäden der in 12 gezeigten Vorrichtung;
• 16 eine perspektivische Ansicht einer weiteren Ausgestaltung der in 1 gezeigten Vorrichtung mit einem Linearantrieb zum Verschieben eines ersten Teilfadens;
• 17 ein Getriebe des in 16 gezeigten Linearantriebes;
• 18 eine weitere Variante der in 12 gezeigten Vorrichtung mit einer weiteren Verschiebeeinheit zum Verschieben eines in 12 gezeigten dritten Teilfadens unabhängig von einem in 12 gezeigten ersten Teilfaden in Bezug zu einer in 12 gezeigten Einlaufgalette.

They represent:

• 1 a side view of a device according to the invention with a first thread feed, a second thread feed, a displacement unit and an inlet godet;
• 2 a top view of the in 1 inlet godet shown in a first state of the device 100;
• 3 a top view of the in 1 shown inlet godet in a second state of the in 1 device shown;
• 4 another side view of the in 1 device shown in the first state of the device;
• 5 in the 4 further side view shown in 1 device in the second state of the device;
• 6 a side view of an embodiment of FIG 1 shown displacement unit in the first state of FIG 1 device shown;
• 6a another side view of the in 6 shown embodiment of the displacement unit;
• 7 in the 6 shown embodiment of the displacement unit in a second state of FIG 1 device shown in a side view;
• 7a in the 7 shown embodiment of the displacement unit in the second state of FIG 1 device shown in a further side view;
• 8th another embodiment of the in 1 shown shifting unit in a side view in the first state of FIG 1 device shown;
• 9 in the 8th further embodiment shown in FIG 1 shown displacement unit in the second state of FIG 1 device shown;
• 10 a perspective view of in 8th further embodiment shown in 1 shown displacement unit in the first state of FIG 1 device shown;
• 11 another embodiment of the in 10 embodiment shown in FIG 1 shown device with a guide cylinder for generating a bias of an in 1 shown first partial thread;
• 12 in the 1 device shown with an additional third thread feed;
• 13 a first state of in 12 variant shown in 1 device shown;
• 14 a second state of in 12 variant shown in 1 device shown;
• 15 a perspective view of a variant of in 12 The device shown with a hollow cylinder as a displacement unit for displacing two partial threads in 12 device shown;
• 16 a perspective view of a further embodiment of in 1 shown device with a linear drive for moving a first partial thread;
• 17 a transmission of the in 16 shown linear drive;
• 18 another variant of the in 12 shown device with a further displacement unit for displacing an in 12 shown third partial thread independently of an in 12 shown first sub-thread in relation to an in 12 shown enema godet.

1 shows a device 100 for producing a mixed thread 10 from at least a first partial thread 1 and a second partial thread 2. The device 100 has a first thread feed 11 for feeding in a first partial thread 1 and a second thread feed 12 for feeding in the second partial thread 2. The first partial thread 1 is introduced with the aid of the thread feed 11 into a work area of the device 100 between the first thread feed 11 and an inlet godet 30 of the device 100 or is fed with the aid of the first thread feed 11 to this work area. Analogously, the second partial thread 2 is inserted into the work area with the aid of the second thread feeder 12 brought or fed into this work area.

The inlet godet 30 is set up to bring the first partial thread 1 and the second partial thread 2 together in such a way that the first partial thread 1 and the second partial thread 2 leave the incoming godet 30 guided next to one another in the form of a mixed thread 10 . The mixed yarn can, for example, be taken up by a pre-stretching roll (not shown). Before the first partial thread 1 enters, the first partial thread 1 has a first thread running direction 21 . Analogously, before the second partial thread 2 enters the intake godet 30 , the second partial thread 2 has a second thread running direction 22 .

As in 1 shown, the first thread running direction 21 differs from the second thread running direction 22 in at least one direction in space. The first partial thread 1 and the second partial thread 2 leave the inlet godet 30 with a common thread running direction 23 next to each other in the form of the mixed thread 10. The first thread running direction 21 and the second thread running direction 22 are in 1 shown in the xy plane. The first thread running direction 21 runs essentially parallel to a connecting line between the first thread feed 11 and a first pick-up point 31 on a guide jacket 7 of the inlet godet 30. The guide jacket 7 rotates at an angular speed 24 about an axis of rotation 6 of the inlet godet 30 and is using a Drive not shown in the figures can be driven. The second thread running direction 22 runs essentially parallel to a connecting line between the second thread feed 12 and a second pick-up point 32 on the guide jacket 7. The first pick-up point 31 designates a first point on the guide jacket 7 below, at which the first partial thread 1 on the guide jacket 7 hits. Analogously, the second pick-up point 32 designates a second point on the guide jacket 7 at which the second partial thread 2 meets the guide jacket 7 .

As in 1 shown, the first partial thread runs from the first thread feed 11 to the inlet godet 30 and the second partial thread 2 from the second thread feed 12 to the inlet godet 30 . The displacement unit 4 is arranged between the first thread feed 11 and the inlet godet 30 . The displacement unit 4 preferably has a contact surface 8 which, in the z-direction of the 1 shown right-hand coordinate system 20 is movable. The displacement unit 4 is preferably set up in such a way that a movement of the contact surface 8 in the positive z-direction causes a displacement of the first partial thread 1 in the positive z-direction. In the exemplary embodiments shown in the figures, the second partial thread 2 does not change its position in the z-direction. In particular, the position of the second partial thread 2 in the z-direction at the second receiving point 32 is independent of a position of the first partial thread 1 at the first receiving point 31 in the z-direction. Accordingly, the device 100 is set up to displace the first partial thread 1 independently of the second partial thread 2 with the aid of the displacement unit 4 in the z-direction. The first partial thread 1 forms a contact area 5 with the displacement unit 4 , in particular with the contact surface 8 , within which the first partial thread 1 touches the displacement unit 4 . The contact area 5 is in 1 shown wider than the partial thread 1 for better illustration. In principle, however, the contact area 5 has the same width as the partial thread 1 since the contact area 5 is formed by the first partial thread 1 lying against the contact surface 8 . By shifting the first partial thread 1 with the aid of the shifting unit 4 , the first partial thread 1 can be moved in relation to the second partial thread 2 parallel to the axis of rotation 6 of the inlet godet 30 . Accordingly, a movement of the contact surface 8 preferably causes a relative movement of the partial thread 1 in relation to the second partial thread 2.

2 shows a first state of the device 100 in which a z-coordinate of the second recording point 32 is greater than a z-coordinate of the first recording point 31. In 2 the first partial thread 1 is accordingly arranged in the xz plane above the second partial thread 2, which describes a first arrangement of the two partial threads 1 and 2.

3 shows a second state of the device 100 in which the z-coordinate of the first recording point 31 is greater than the z-coordinate of the second recording point 32. Accordingly, in the in 3 shown state of the device 100, the first partial thread 1 is arranged below the second partial thread 2 in the xz plane. A second arrangement of the two partial threads 1 and 2 can therefore be described in that the second partial thread 2 is arranged above the first partial thread 1 in the xz plane. 2 and 3 show the two partial threads 1 and 2 at a distance from one another in the z-direction. However, this does not necessarily have to be the case with every embodiment. The two partial threads 1 and 2 can just as easily touch when entering the entry godet 30 or after entry. The first partial thread 1 and the second partial thread 2 can touch when exiting the inlet godet 30 or be at a distance from one another.

4 shows the device 100 in the first state in a side view. The displacement unit 4 is as in 1 schematic with the contact area 8 shown. Starting from the in 4 shown first state of the device 100, the device 100 in the 5 shown second state are offset, in which the second arrangement of the two partial threads 1 and 2 to each other is present. For this purpose, the contact area 5 is shifted in the positive z-direction. A displacement of the contact area 5 in the positive z-direction causes the first partial thread 1 to be displaced in the positive z-direction in the second state of the device 100 . As a result, the first partial thread 1 can be pushed past the second partial thread. This causes a change from the first arrangement of the two partial threads 1 and 2 to the second arrangement of the two partial threads 1 and 2 . A change from the second arrangement to the first arrangement can be achieved by moving the contact area 5 back in the direction of the 4 shown position can be achieved.

In 1 until 5 an embodiment of the device 100 is shown in which the contact area 5 is located on a first side 41 of the first partial thread and a second side 42 of the first partial thread 1, which is opposite the first side 41, runs freely along the displacement unit 4. The 1 until 5 accordingly show a variant of the device 100 in which the displacement unit 4 touches the first partial thread 1 on one side, namely on the first side 41 of the first partial thread 1. In 4 and 5 the first side 41 is located to the right of a center of the first partial thread 1 and the second side 42 to the left of a center of the first partial thread 1. For the following considerations, a deflection of the first partial thread 1 in the positive z-direction, as shown in 5 is shown, is considered to be comparatively small, so that the first thread running direction 21 does not change substantially as a result of the deflection. For this reason, the first yarn direction is 21 in 5 drawn parallel to the y-axis.

The proposed device 100 is set up in such a way that the displacement unit 4 for displacing the first partial thread 1 relative to the second partial thread 2 is movable in such a way that within the contact area 5 an averaged vertical speed component of the shifting unit 4 is greater than an averaged parallel speed component of the shifting unit 4 . The averaged vertical speed component of the displacement unit 4 is aligned perpendicular to the first thread running direction 21 . The averaged parallel speed component of the displacement unit 4 is aligned parallel to the first thread running direction 21 .

The averaged vertical velocity component of the displacement unit 4, referred to below as the averaged vertical velocity component, can be 1 until 5 shown embodiment of the device 100 parallel to the z-axis or parallel to the x-axis of the right-handed coordinate system 20 aligned. The averaged parallel speed component of the displacement unit 4, referred to below as the averaged parallel speed component, is aligned parallel to the y-axis of the coordinate system 20.

Various variants of the displacement unit 4 are described below.

6 shows a first variant of the displacement unit 4, in which the displacement unit 4 has a cylinder 60 with an end face 68 aligned obliquely to an axis of rotation 61 of the cylinder 60. In this first variant of the displacement unit 4, the end face 68 forms the 1 shown contact surface 8. A contact area 65, within which the first partial thread 1 comes into contact with the end face 68, is in 6 shown in the form of a strip with dashed lines for better illustration. In fact, however, a width of the contact area 65 corresponds to a width of the partial thread 1.

The cylinder 60 is movably mounted about the axis of rotation 61 . The cylinder 60 is preferably mechanically coupled to a motor, not shown in the figures, with the motor being able to drive the cylinder 60 so that it rotates about the axis of rotation 61 . 6 shows a first state of the cylinder 60, in which the first arrangement between the two partial threads 1 and 2, shown in 2 is shown, is present. 7 shows a second state of the cylinder 60, in which the cylinder 60 is rotated through 90 degrees about the axis of rotation 61. In the second state of the cylinder 60, the second arrangement lies between the two partial threads 1 and 2, as shown in FIG 3 is drawn, before. When the cylinder 60 is adjusted from the first state to the second state of the cylinder 60, the contact area 65 migrates from a central area of the contact surface 68 to an edge area of the contact surface 68, as shown in FIG 7 is shown. 7 FIG. 12 further shows that the contact surface 68 has an angle 62 to the axis of rotation 61 of the cylinder 60. FIG. Angle 62 preferably ranges from about 60 to 80 degrees.

the inside 1 The contact area 5 shown is at the in 6 shown first variant in the form of the contact area 65 on the end face 68 is formed. When changing from the first arrangement of the two partial threads 1 and 2 to the second arrangement of the two partial threads 1 and 2, the contact area 65 on the end face 68 is reduced, as is shown in FIGS 6 and 7 is shown.

How out 6 and 7 can be seen, a rotation of the displacement unit 4 in the form of the cylinder 60 about the axis of rotation 61 causes a displacement of the first partial thread 1 in relation to the second partial thread 2 and in relation to the inlet godet 30 in a direction parallel to the axis of rotation 61.

The average vertical velocity component of the displacement unit 4 and the average parallel velocity component of the displacement unit 4 within the contact area 65 are to be described below. 6a shows a side view of the device 100 according to the first variant, the viewing direction running parallel to the z-direction. It is assumed below that the cylinder 60 rotates at an angular velocity 64, also referred to below as ω. The angular velocity 64 is drawn in as an example in the direction of the mathematically positive direction of rotation in the right-hand coordinate system 20 . The cylinder 60 can also turn in the opposite direction to the mathematically positive direction of rotation just as well.

der Verschiebeeinheit 4, insbesondere des Zylinders 60, innerhalb des Kontaktbereiches 65 berechnet werden. Hierzu kann bevorzugt ein relatives Koordinatensystem 120 verwendet werden. Das relative Koordinatensystem 120 weist eine x-Achse x', eine y-Achse y' und eine z-Achse z' auf. Die y-Achse y' des relativen Koordinatensystems 120 verläuft parallel zur ersten Fadenlaufrichtung 21 und die z-Achse z' des relativen Koordinatensystems 120 parallel zur Drehachse 61. Die gemittelte Geschwindigkeit ${\overrightarrow{v}}_m$

kann als Durchschnittsgeschwindigkeit von mehreren Punkten der Verschiebeeinheit 4 innerhalb des Kontaktbereiches 65 berechnet werden. Eine lokale Geschwindigkeit ${\overrightarrow{v}}_{local}$

von einem jeweiligen Punkt der mehreren Punkte der Kontaktfläche 68 innerhalb des Kontaktbereiches 65 kann mit Hilfe der Winkelgeschwindigkeit 64 und einer Position des jeweiligen Punktes in Bezug zu dem Ursprung des relativen Koordinatensystems 120 wie folgt bestimmt werden: $${\overrightarrow{v}}_{local}=\overrightarrow{\omega }\times \left(\begin{array}{c}{x}_{local}^{\text{'}}\\ y_{local}^{\text{'}}\\ z_{local}^{\text{'}}\end{array}\right),$$

wobei die Position des jeweiligen Punktes der Kontaktfläche 68 in dem relativen Koordinatensystem durch die Werte $x_{local}^{\text{'}},y_{local}^{\text{'}}\text{ und }{z}_{local}^{\text{'}}$

angegeben ist und $\overrightarrow{\omega }$

die Winkelgeschwindigkeit 64 bezeichnet. Bei der ersten Variante der Vorrichtung 100, wie sie in 6 und 7 gezeigt ist, sind die Werte $x_{local}^{\text{'}}\text{ und }{z}_{local}^{\text{'}}$

meistens etwa gleich 0. Die gemittelte Geschwindigkeit ${\overrightarrow{v}}_m$

der Verschiebeeinheit 4, insbesondere des Zylinders 60, kann mittels Integralrechnung wie folgt bestimmt werden: $${\overrightarrow{v}}_m=\left(\begin{array}{c}{v}_{x,m}\\ v_{y,m}\\ v_{z,m}\end{array}\right)=\frac{1}{d}\cdot {\displaystyle \underset{-\frac{1}{2}d}{\overset{+\frac{1}{2}d}{\int }}\overrightarrow{\omega }}\times \overrightarrow{r}\cdot dr,\text{mit }\overrightarrow{r}=\left(\begin{array}{c}{x}_{local}^{\text{'}}\\ y_{local}^{\text{'}}\\ z_{local}^{\text{'}}\end{array}\right),$$

wobei der Betrag des Vektors 101 gleich x_m ist und der Betrag des Vektors 102 gleich y_m ist und d einen Durchmesser des Zylinders 60 angibt. 7a zeigt die erste Variante der Vorrichtung 100 in derselben Ansicht wie in 6a, wobei der Zylinder 60 den zweiten Zustand einnimmt und die zweite Anordnung zwischen den Teilfäden 1 und 2 vorliegt. Der Kontaktbereich 65 ist in dem zweiten Zustand des Zylinders 60 annähernd punktförmig ausgebildet. Demnach entsprechen die gemittelte parallele und senkrechte Geschwindigkeitskomponente der jeweiligen lokalen parallelen beziehungsweise senkrechten Geschwindigkeit der Kontaktfläche 68 innerhalb des Kontaktbereiches 65. Aus den 6a und 7a geht hervor, dass die gemittelte parallele Geschwindigkeitskomponente der Verschiebeeinheit 4 bei der ersten Variante der Vorrichtung 100 sowohl im ersten Zustand als auch im zweiten Zustand der Vorrichtung 100 gleich 0 ist. Die gemittelte senkrechte Geschwindigkeitskomponente der Verschiebeeinheit 4 ist im ersten und im zweiten Zustand der Vorrichtung 100 größer 0.The average vertical velocity component of the displacement unit 4 is represented below by a first vector 101 for the description of the first variant of the device 100 . As in 6a As can be seen, the first vector 101 is oriented perpendicular to the first thread running direction 21 . The mean parallel speed component of the displacement unit 4 is represented by a second vector 102 for the description of the first variant of the device 100 . The second vector 102 runs parallel to the first thread running direction 21. A respective absolute value of the vectors 101 and 102 can each be in the form of a respective component of an average speed ${\overrightarrow{v}}_m$

of the displacement unit 4, in particular of the cylinder 60, within the contact area 65 can be calculated. A relative coordinate system 120 can preferably be used for this purpose. The relative coordinate system 120 has an x-axis x', a y-axis y' and a z-axis z'. The y-axis y′ of the relative coordinate system 120 runs parallel to the first thread running direction 21 and the z-axis z′ of the relative coordinate system 120 runs parallel to the axis of rotation 61. The average speed ${\overrightarrow{v}}_m$

can be calculated as an average speed of several points of the displacement unit 4 within the contact area 65. A local speed ${\overrightarrow{v}}_{lOcal}$

of a respective point of the multiple points of the contact surface 68 within the contact area 65 can be determined using the angular velocity 64 and a position of the respective point in relation to the origin of the relative coordinate system 120 as follows: $${\overrightarrow{v}}_{lOcal}=\overrightarrow{\omega }\times \left(\begin{array}{c}{x}_{lOcal}^{\text{'}}\\ y_{lOcal}^{\text{'}}\\ {\mathrm{e.g}}_{lOcal}^{\text{'}}\end{array}\right),$$

where the position of the respective point of the contact surface 68 in the relative coordinate system is given by the values $x_{lOcal}^{\text{'}},y_{lOcal}^{\text{'}}\text{and}{\mathrm{e.g}}_{lOcal}^{\text{'}}$

is specified and $\overrightarrow{\omega }$

denotes the angular velocity 64 . In the first variant of the device 100, as shown in 6 and 7 shown are the values $x_{lOcal}^{\text{'}}\text{and}{\mathrm{e.g}}_{lOcal}^{\text{'}}$

mostly about 0. The average speed ${\overrightarrow{v}}_m$

of the displacement unit 4, in particular of the cylinder 60, can be determined by means of an integral calculus as follows: $${\overrightarrow{v}}_m=\left(\begin{array}{c}{v}_{x,m}\\ v_{y,m}\\ v_{\mathrm{e.g},m}\end{array}\right)=\frac{1}{\mathrm{i.e}}\cdot {\displaystyle \underset{-\frac{1}{2}\mathrm{i.e}}{\overset{+\frac{1}{2}\mathrm{i.e}}{\int }}\overrightarrow{\omega }}\times \overrightarrow{\mathrm{right}}\cdot \mathrm{i.e}\mathrm{right},\text{with}\overrightarrow{\mathrm{right}}=\left(\begin{array}{c}{x}_{lOcal}^{\text{'}}\\ y_{lOcal}^{\text{'}}\\ {\mathrm{e.g}}_{lOcal}^{\text{'}}\end{array}\right),$$

where the magnitude of the vector 101 is equal to x _m and the magnitude of the vector 102 is equal to y _m and d indicates a diameter of the cylinder 60. 7a shows the first variant of the device 100 in the same view as in FIG 6a , wherein the cylinder 60 assumes the second state and the second arrangement between the partial threads 1 and 2 is present. In the second state of the cylinder 60, the contact area 65 is formed approximately in the form of a point. Accordingly, the mean parallel and perpendicular velocity components correspond to the respective local parallel or perpendicular velocity of the contact surface 68 within the contact area 65. From the 6a and 7a shows that the mean parallel velocity component of the displacement unit 4 in the first variant of the device 100 is equal to 0 both in the first state and in the second state of the device 100 . The mean vertical velocity component of the displacement unit 4 is greater than 0 in the first and in the second state of the device 100.

8th shows a second variant of the displacement unit 4, in which the displacement unit 4 is designed in the form of a hollow cylinder 80. The hollow cylinder 80 is rotatably mounted about an axis of rotation 81 . Furthermore, the hollow cylinder 80 is delimited by a contact surface 88 on a side of the displacement unit 4 facing the first partial thread 1 . Furthermore, the hollow cylinder 80 is delimited in the radial direction by an inner lateral surface 83 of the hollow cylinder 80 and an outer lateral surface 84 of the hollow cylinder 80 . Analogous to 6 shows 8th a first state of the hollow cylinder 80, in which the device 100 assumes the first state, ie the first configuration between the two partial threads 1 and 2 is present. 9 shows a second state of the hollow cylinder 80, in which the device 100 assumes the second state and the second arrangement between the partial threads 1 and 2 is present.

In the 8th and 9 reference symbols used, which are also used in 6 and 7 are used correspond to the same components that are used in the in 6 and 7 shown first variant of the displacement unit 4 also have the same functions as in the 8th and 9 shown second variant of the displacement unit 4. Generally describe the same reference numerals in the 1 until 18 , which are used for the description of the different embodiments of the invention, the same components, which also have the same functions in the different embodiments.

in the in 8th In the first state of the hollow cylinder 80 shown, a contact area 85, within which the first partial thread 1 touches the displacement unit 4, is formed in two parts. However, by comparing it with the in 6 shown first variant of the displacement unit 4 can be determined that the contact area 85 is smaller than the contact area 65. As a result, friction between the first partial thread 1 and the displacement unit 4 can be reduced. At the in 9 In the second state of the hollow cylinder 80 shown, the contact area 85 is similar to the contact area 65 in FIG 7 shown first variant of the displacement unit 4 in the form of a single contact area. Accordingly, friction between the first partial thread 1 and the displacement unit 4 in the second variant in the second state of the device 100 is approximately the same as in the first variant of the displacement unit 4 in the second state of the device 100.

10 shows the hollow cylinder 80 in a perspective view, the hollow cylinder 80 being in the first state. The hollow cylinder 80 is rotatably mounted in a bearing housing 86 of the device 100 . An electric motor 87 is mechanically connected to the hollow cylinder 80 for driving the hollow cylinder 80 .

The device 100 advantageously has a securing element 89 for securing the second partial thread 2 against slipping of the second partial thread 2 parallel to the z-direction. The securing element 89 is preferably attached to the bearing housing 86 . The securing element 89 is advantageously designed in the form of a cable holder. This has the advantage that the partial thread 2 can easily be introduced into the securing element 89 . In general, a fuse element, such as the fuse element 89, at all in the 1 until 18 shown variants of the invention for securing the second partial thread 2 against slipping of the second partial thread 2 parallel to the axis of rotation 6 of the inlet godet 30 may be provided. Deviating from this, it is also possible that the second partial thread 2 in all of the 1 until 18 shown variants of the invention is displaceable to the axis of rotation 6 of the inlet godet 30. Accordingly, those in the 10 , 11 , 15 and 16 shown embodiments can also be formed without the securing element 89.

For the sake of simplicity, a respective transition area between the end face 68 of the cylinder 60 and its lateral surface and between the contact surface 88 of the hollow cylinder 80 and the outer lateral surface 84 is shown in the form of an edge. Conveniently, the two transition areas are rounded. 11 12 shows a third variant of the device 100. According to the third variant of the device 100, the displacement unit 4 is designed in the form of a hollow cylinder 80, as in the second variant. In addition, the device 100 has a guide cylinder 90 which extends along the axis of rotation 81 of the hollow cylinder 80 . In the third variant of the device 100, the first partial thread 1 rests against a lateral surface 91 of the guide cylinder 90 in order to generate a pretensioning of the first partial thread 1. Out of 11 It can be seen that the guide cylinder 90 protrudes at least partially into an inner region of the hollow cylinder 80 which is formed by the inner lateral surface 83 of the hollow cylinder 80. The guide cylinder 90 is preferably firmly connected to the hollow cylinder 80 . This makes it possible to mount the guide cylinder 90 together with the hollow cylinder 80 in the bearing housing 86 in a rotating manner. The guide cylinder 90 and the hollow cylinder 80 are preferably each formed in the form of a single ceramic component.

12 shows a fourth variant of the device 100, in which the device 100 for the production of the mixed thread 10 from the first partial thread 1, the second partial thread 2 and a third partial thread 3 is set up. For this purpose, the device 100 has a third thread feed 13 for feeding in the third partial thread 3 . The third partial thread 3 runs from the third thread feed 13 towards the inlet godet 30. A contact point at which the third partial thread 3 touches the inlet godet 30 is in 12 shown in the form of a third pickup point 33 . According to the fourth variant, the device 100 is designed and set up to move both the first partial thread 1 in relation to the second partial thread 2 and the third partial thread 3 in relation to the second partial thread 2 parallel to the axis of rotation 6 of the inlet godet 30 . This can according to a first embodiment of the fourth variant using the displacement unit 4, in particular with Using the contact surface 8 are effected. According to a second embodiment of the fourth variant, the third partial thread 3 is advantageously connected with the aid of an in 18 shown further displacement unit 184 of the device 100 parallel to the axis of rotation 6 of the inlet godet 30 displaceable.

13 shows a first arrangement of the first partial thread 1, the second partial thread 2 and the third partial thread 3 to each other. In the first arrangement of the partial threads 1, 2 and 3, the first partial thread 1 is above the second partial thread 2 and the second partial thread 2 is above the third partial thread 3 in the in 13 shown xz plane arranged.

14 shows a second arrangement of the first partial thread 1, the second partial thread 2 and the third partial thread 3 to each other. In the second arrangement of the partial threads 1, 2 and 3, the first partial thread 1 is below the second partial thread 2 and the second partial thread 2 is below the third partial thread 3 in the in 14 shown xz plane arranged.

15 shows an example of the first embodiment of the fourth variant, in which both the first partial thread 1 and the third partial thread 3 can be displaced parallel to the axis of rotation 6 of the inlet godet 30 with the aid of the displacement unit 4 . The displacement unit 4 is at the in 15 shown embodiment in the form of in 8th , 9 , 10 and 11 shown hollow cylinder 80 is formed. In addition, the device 100 according to in 15 variant shown in 11 shown guide cylinder 90 with its outer surface 91 on. In this embodiment, the guide cylinder 90 has a double function. On the one hand, it can bring about the pretensioning of the first partial thread 1 and also a pretensioning of the third partial thread 3 . On the other hand, the guide cylinder 90 separates the first partial thread 1 from the third partial thread 3 in a region in which the hollow cylinder 80 acts on the first partial thread 1 and the third partial thread 3 . As a result, tangling of the first partial thread 1 and the third partial thread 3 in the area of the displacement unit 4 can be avoided.

How out 15 As can be seen, both the first partial thread 1 and the third partial thread 3 are in contact with the contact surface 88 of the hollow cylinder 80 . When the hollow cylinder 80 rotates, the partial thread 1 and also the partial thread 3 are alternately displaced in the positive z-direction, ie parallel to the axis of rotation 6 , with the aid of the hollow cylinder 80 . 15 shows the device 100 in a first state, in which the first arrangement of the partial threads 1, 2 and 3, as shown in 13 shown is present. Accordingly, a z-coordinate of the third recording point 33 is greater than a z-coordinate of the second recording point 32 and the z-coordinate of the second recording point 32 is greater than a z-coordinate of the first recording point 31. A second state of the device 100 according to 15 , in which the second arrangement of the partial threads 1, 2 and 3, as shown in 14 is shown, the device 100 then assumes when the hollow cylinder 80 is compared to its position according to FIG 15 is rotated 180 degrees about the axis of rotation 81 .

If the hollow cylinder 80 is rotated continuously about its axis of rotation 81, there is a periodic changeover between the first arrangement of the partial threads 1, 2 and 3, as shown in 13 is shown, and the second arrangement of the partial threads 1, 2 and 3, as shown in 14 is shown instead. As a result, a changing color sequence in the mixed thread 10 can be set, in particular controlled, as a function of a rotational speed of the displacement unit 4, in particular of the hollow cylinder 80.

Advantageously, the 15 The variant of the device 100 shown has a first guide rod 71 for guiding the first partial thread 1 towards the guide cylinder 90 . The device 100 also preferably has a second guide rod 72 for guiding the third partial thread 3 to the guide cylinder 90 . The two guide rods 71, 72 can be made of ceramic, for example. For easier application of the first partial thread 1 and the third partial thread 3 to the displacement unit 4, in particular the contact surface 88 of the hollow cylinder 80, one of the two guide rods 71, 72 is longer than the other. At the in 15 shown variant, the first guide rod 71 longer than the second guide rod 72 is formed.

16 shows a further embodiment of in 1 shown device, in which the device 100 has a linear drive 160 and the displacement unit 4 with the aid of the linear drive 160 can be driven. In this configuration, the displacement unit 4 can preferably have a cylinder 161 and a guide rod 162 . The guide rod 162 is preferably firmly connected to the cylinder 161 and preferably extends as shown in FIG 16 shown perpendicular to the axis of rotation 6 of the inlet godet 30 and parallel to the x-axis. The cylinder 161 is preferably slidably mounted in the bearing housing 186 . Furthermore, the displacement unit 4 is mechanically connected to the linear drive 160 via the cylinder 161 .

A mechanical connection between the displacement unit 4 and the linear drive 160 is preferably designed in such a way that the linear drive 160 can displace the displacement unit 4 , in particular the guide rod 162 , parallel to the axis of rotation 6 of the infeed godet 30 . This is the first Thread 1 can be displaced parallel to the axis of rotation 6 by means of the linear drive 160 via the displacement unit 4 . At the in 16 shown embodiment of the device 100 is blocked a movement of the displacement unit 4 parallel to the first direction of yarn travel 21. This can be done, for example, by storing the cylinder 161 in an in 17 slide bearing 173 shown can be realized.

The linear drive 160 preferably has an electric motor and a transmission on the inside, which can convert a rotary movement of the electric motor into a linear movement parallel to the axis of rotation 6 . The gearing can, for example, be in the form of a ball screw gear or a roller screw gear or an in 17 shown crank drive 170 may be formed.

The crank mechanism 170 can be driven with the aid of an electric motor 171 . The crank drive 170 is preferably mechanically coupled to the cylinder 161 of the displacement unit 4 via a joint 172 . The bearing housing 186 preferably has the plain bearing 173 for supporting the cylinder 161 .

The average vertical velocity component of the stylet 162 is used below for the description of the configuration of the device 100 according to FIG 16 represented by another first vector 201. As in 16 As can be seen, the further first vector 101 is aligned perpendicularly with respect to the first thread running direction 21 . The average parallel velocity component of the stylet 162 is used for the description of the configuration of the device 100 according to FIG 16 represented by another second vector 202. The second vector 202 runs parallel to the first thread running direction 21. Because the movement of the displacement unit 4 is blocked parallel to the first thread running direction 21, the magnitude of the second vector 202 is always zero. The design of the device 100 therefore always ensures that when the displacement unit 4 moves, the average vertical speed component of the guide rod 162 is greater than the average parallel speed component of the guide rod 162 . As a result, the guide rod 162 can hardly influence a yarn speed of the first partial yarn 1.

18 shows a further variant of the device 100, which in addition to the 12 The variant shown has the further displacement unit 184 for displacing the third partial thread 3 parallel to the axis of rotation 6 of the inlet godet 30 . As in 18 shown, the further displacement unit 184 is arranged between the third thread feed 13 and the inlet godet 30 . The further displacement unit 184 forms a further contact area 185 with the third partial thread 3 . Within the contact area 185, the third partial thread 3 touches the further displacement unit 184, in particular a contact surface 188 of the displacement unit 184.

Analogously to displacement unit 4, it is advantageously provided in the further displacement unit 184 that, within the further contact area 185, an average vertical speed component of the further displacement unit 184, which is aligned perpendicular to a direction of travel 183 of the third partial thread 3, is greater than an average parallel speed component of the further displacement unit 184 is. The mean parallel speed component of the further displacement unit 184 is aligned parallel to the running direction 183 of the third partial thread 3 . The further contact area 185 is advantageously formed on a first side of the third partial thread 3 . A second side of the third partial thread 3, which is opposite the first side of the third partial thread, advantageously runs freely along the further displacement unit 184. As a result, the further displacement unit 184 touches the third partial thread 3 on one side.

The further shifting unit 184 can, according to one of the 1 until 17 described variants of the displacement unit 4 may be formed. For example, the further displacement unit 184 in the form of the in 6 shown cylinder 60 with the contact surface 68 aligned obliquely to the axis of rotation 61, in the form of the hollow cylinder 80 with its contact surface 88 or in the form of the guide rod 162 attached to the cylinder 160. Depending on how the further displacement unit 184 is designed, the device 100 also has a further motor for driving a further cylinder, which is designed analogously to the cylinder 60, a further hollow cylinder, which is designed analogously to the hollow cylinder 80, or a second one further cylinder, which is designed analogously to the cylinder 160 on. With the aid of the further displacement unit 184 , both the first partial thread 1 and the second partial thread 3 can be shifted independently of one another parallel to the axis of rotation 6 of the inlet godet 30 with the aid of the device 100 .

In order to control the displacement unit 4 , ie in particular to control a movement of the contact surface 8 in relation to the infeed godet 30 , the device 100 advantageously has a first control device 301 . A movement of the contact surface 60 or 88 in relation to the inlet godet 30 can preferably be controlled with the aid of the first control unit 301 . Similarly, the device 100 according to in 18 variant shown has a second control device 302 for controlling the further displacement unit 184 . With the help of the second control unit 302 a movement of the further contact surface 188 in relation to the inlet godet 30 can preferably be controlled. According to a 18 variant shown, the first control unit 301 and the second control unit 302 are controlled using a further control unit 303 . The further control device 303 is preferably set up to send control commands to the first control device 301 and the second control device 302 in order to produce a desired arrangement of the first partial thread 1, the second partial thread 2 and preferably the third partial thread 3 in the mixed thread.

In particular, the additional control unit 303 is preferably set up to set a frequency at which a change is made between the above-mentioned first arrangement of the first partial thread 1 and the second partial thread 2 and the second arrangement of the first partial thread 1 and the second partial thread 2 in the mixed thread 10. The further control unit 303 is preferably set up analogously, with a frequency between the above-mentioned first arrangement of the first partial thread 1, the second partial thread 2 and the third partial thread 3 and the second arrangement of the first partial thread 1, the second partial thread 2 and the third partial thread 3 is changed in the mixed yarn 10 to set. Taken together, the first control unit 301, the second control unit 302 and the further control unit 303 can be regarded as a control unit 304.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 0133198 B1 [0003, 0022]
• EP 0557765 B1 [0004, 0017, 0021]

Claims (16)

Device (100) for producing a mixed thread (10) from at least a first partial thread (1) and a second partial thread (2), the device (100) having a first thread feed (11) for feeding the first partial thread (1), a second Thread feed (12) for feeding in the second partial thread (2) and an inlet godet (30) for merging the first partial thread (1) with the second partial thread (2) to form the mixed thread (10), the first partial thread (1) being guided from the first thread feed (11) runs to the inlet godet (30) and the second partial thread (2) runs from the second thread feed (12) to the inlet godet (30), the device (100) having a displacement unit (4) which is located between the first thread feed (11) and the inlet godet (30), the displacement unit (4) forming a contact area (5) with the first partial thread (1), within which the first partial thread (1) touches the displacement unit (4), and the displacement unit (4) for displacing the first partial thread (1) relative to the second partial thread (2) and relative to the inlet godet (30) is movable in such a way that when the displacement unit (4) moves, an average vertical speed component of the displacement unit (4), which is aligned perpendicularly to a running direction (21) of the first partial thread (1), within the contact area (5) is greater than an average parallel speed component of the displacement unit (4), which is parallel to the running direction (21) of the first Part thread (1) is aligned. Device (100) according to claim 1 , wherein the contact area (5) is formed on a first side (41) of the first partial thread (1) and a second side (42) of the first partial thread (1), which is opposite the first side (41), freely on the displacement unit (4) runs along so that the displacement unit (4) touches the first partial thread (1) on one side. Device (100) according to claim 1 or 2 , wherein the displacement unit (4; 60; 80) for displacing the first partial thread (1) is rotatably mounted about an axis of rotation (61; 81) and has a contact surface (68; 88) on which the first partial thread (1) the displacement unit (44; 60; 80), wherein the contact surface (68; 88) is aligned obliquely to the axis of rotation (61; 81) in order to rotate the displacement unit (44; 60; 80) about the axis of rotation (61; 81) to bring about a displacement of the first partial thread (1) in relation to the second partial thread (2) and in relation to the inlet godet (30) in a direction parallel to the axis of rotation (61; 81). Device (100) according to claim 3 , wherein the device (100) has a guide element (90) which extends along the axis of rotation (81) of the displacement unit (4), and the first partial thread (1) on a surface of the guide element (90) for generating a pretension of the first Partial thread (1) and for guiding the first partial thread (1). Device (100) according to claim 3 or 4 , wherein the displacement unit (4) is designed in the form of a hollow cylinder (80) which is delimited by the contact surface (88) on a side of the displacement unit (4) facing the first partial thread (1) and is delimited in the radial direction by an inner lateral surface ( 83) of the hollow cylinder (80) and an outer lateral surface (84) of the hollow cylinder (80). Device (100) according to claim 4 or 5 , wherein the displacement unit (4) and the guide element (90) are each designed in the form of a single ceramic component. Device (100) according to one of the preceding claims, wherein the second partial thread (2) is movable in at least one direction parallel to an axis of rotation (6) of the inlet godet (30). Device (100) according to one of claims 3 until 7 , wherein the device (100) for producing the mixed thread (10) from the first partial thread (1), the second partial thread (2) and a third partial thread (3) is set up and a third thread feed (13) for feeding the third partial thread ( 3) and the displacement unit (4) is arranged between the third thread feed (13) and the inlet godet (30) and the third partial thread (3) touches the contact surface (5) of the displacement unit (4). Device (100) according to one of the preceding claims, wherein the device (100) is set up for producing the mixed thread (10) from the first partial thread (1), the second partial thread (2) and a third partial thread (3) and a third thread feed (13) for feeding the third partial thread (3) and a further displacement unit (184) and the further displacement unit (184) is arranged between the third thread feed (13) and the inlet godet (30) and the further displacement unit (184) with the third partial thread (3) forms a further contact area (185), within which the third partial thread (3) touches the further displacement unit (184), and the further displacement unit (184) for displacing the third partial thread (3) relative to the second partial thread ( 2) is movable in such a way that when the further displacement unit (184) moves, an average vertical speed component of the further displacement unit (184), which is aligned perpendicular to a direction of travel of the third partial thread (3), within the further contact area Ches (185) is greater than an average parallel speed component of the further displacement unit (184), which is aligned parallel to the running direction of the third partial thread (3). Device (100) according to claim 9 , wherein the device (100) has a control unit for controlling the displacement unit (4) and the further displacement unit (184), and the control unit is set up to cause a movement of the displacement unit (4) and a movement of the further displacement unit (184) independently of one another steer. Device (100) according to one of Claims 1 , 2 , 9 or 10 , wherein the device (100) has a linear drive (160) and the displacement unit (4) can be driven using the linear drive (160). Device (100) according to claim 11 , wherein the device (100) has a further linear drive and the further displacement unit (184) can be driven using the further linear drive. Device (100) according to claim 11 , wherein the linear drive (160) has a crank mechanism (170) and with the aid of the crank mechanism (170) a rotary movement of a motor of the device (100) can be converted into a linear movement of the displacement unit (4). Device (100) for producing a mixed thread (10) from at least a first partial thread (1) and a second partial thread (2), the device (100) having a first thread feed (11) for feeding the first partial thread (1), a second Thread feed (12) for feeding in the second partial thread (2) and an inlet godet (30) for merging the first partial thread (1) with the second partial thread (2) to form the mixed thread (10), the first partial thread (1) being guided from the first thread feed (11) runs to the inlet godet (30) and the second partial thread (2) runs from the second thread feed (12) to the inlet godet (30), the device (100) having a displacement unit (60; 80) which is arranged between the first thread feed (11) and the inlet godet (30), the displacement unit (60; 80) having a contact surface (65, 85) on which the first partial thread (1) touches the displacement unit (60; 80), wherein the displacement unit (60; 80) for displacing the first partial thread (1) can be rotated about an axis of rotation (61; 81) and the contact surface (65, 85) is aligned obliquely to the axis of rotation (61; 81) in order to cause a displacement of the first partial thread (1) in In relation to the second partial thread (2) and in relation to the inlet godet (30) in a direction parallel to the axis of rotation (61; 81). A method for producing a mixed thread (10) from at least a first partial thread (1) and a second partial thread (2), the first partial thread (1) being fed from a first thread feed (11) to an inlet godet (30) for bringing the first partial thread ( 1) is guided with the second partial thread (2) to the mixed thread (10) and the second partial thread (2) is guided from a second thread feed (12) to the inlet godet (30), the first partial thread (1) on a displacement unit (60; 80) is guided along, which is arranged between the first thread feed (11) and the inlet godet (30), so that the first partial thread (1) touches a contact surface (65; 85) of the displacement unit (60; 80), wherein the displacement unit (60; 80) is rotated about an axis of rotation (61; 81) of the displacement unit (60; 80) in order to effect a displacement of the first partial thread (1) in a direction parallel to the axis of rotation (61; 81). A method for producing a mixed thread (10) from at least a first partial thread (1) and a second partial thread (2), the first partial thread (1) being fed from a first thread feed (11) to an inlet godet (30) for bringing the first partial thread ( 1) is guided with the second partial thread (2) to the mixed thread (10) and the second partial thread (2) is guided from a second thread feed (12) to the inlet godet (30), the first partial thread (1) on a displacement unit (4) is guided along, which is arranged between the first thread feed (11) and the inlet godet (30), so that the displacement unit (4) forms a contact area (5) with the first partial thread (1), within which the first partial thread ( 1) touches the displacement unit (4), wherein the displacement unit (4) is moved for displacing the first partial thread (1) relative to the second partial thread (2) and relative to the inlet godet (30) in such a way that when the displacement unit ( 4) an average vertical speed component of the displacement unit (4), which is aligned perpendicular to a running direction (21) of the first partial thread (1), within the contact area (5) is greater than an average parallel speed component of the displacement unit (4), which is parallel is aligned with the running direction (21) of the first partial thread (1).

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