EP3587643A1 - Thread delivery device and system with such a device - Google Patents

Abstract

A thread delivery device (1) according to the invention for supplying a thread (40) to a textile machine is provided with a housing (2), with a storage device, from which the thread (40) is pulled through the textile machine, with a winding element (8) for winding the Thread (40) on the storage device, with a drivable shaft (5) for driving the winding element (8), with a magnet arrangement for fixing the storage device to the housing (2), with a bearing device for rotatably supporting the shaft (5) relative to the storage device , The storage device has a storage body (3) and a wobble body (9). A wobble unit is designed to convey yarn turns (W) wound on the storage body (3) in a separation section (S1), the conveying elements (9b, 9g, 9z) can be moved through the openings (3b) beyond an envelope surface of the storage body (3). The wobble unit is designed for this purpose, in a collecting section (S2) which adjoins the separation section (S1) and above a trigger height of the storage body (3) is arranged to push the yarn turns (W) wound on the storage body (3) without any distance from one another in the direction of the lower edge of the storage body (3).

Description

The invention relates to a thread delivery device and a system with a thread delivery device for delivering a thread to a textile machine.

The thread delivery device is provided with a housing and with a storage device, the thread being drawn off from the storage device by the textile machine. Such a yarn delivery device is also called a storage yarn delivery device.

The EP 0 829 442 B1 describes a weft feeder having a solid base and drum. A hollow windmill arm, which is driven by a hollow drive shaft, winds a large number of thread turns on the drum. A movement system is assigned to the drum, which is suitable for displacing the wound turns from the base towards the free end of the drum. The turns are kept spaced a pitch apart.

The movement system is formed by a set of movement bars. The moving bars partially and cyclically protrude from corresponding slots in the cylindrical surface of the drum. The movement bars are connected to a central hub via respective spokes to essentially form a drum-like structure. The hub is coupled to a bushing with the interposition of a roller bearing. The bushing is fitted on an eccentric section on the drive shaft. The axis of the bushing forms a constant angle of inclination with respect to the eccentric axis.

The axis of the bushing intersects the axis of the drive shaft at a point adjacent to the free end of the drum. The pitch is identical for both directions of rotation or differs by a very small amount.

In the EP 0 968 949 B1 describes a weft feed device which has an oblique bush with a first and a second bush body. The first, semi-cylindrical sleeve body is connected to the drive shaft to limit the eccentric portion of the shaft. The second hollow socket body is arranged on this eccentric section and has an outer surface inclined to the axis of the shaft.

A weft store, in which a rotating reel winds a supply of thread turns on a stationary drum, is from the EP 0 164 033 B1 known. Means for moving the coils comprise a set of bars which are prevented from rotating with respect to the drum but which partially and variably protrude beyond the periphery of the drum. The funds are moved by the motor shaft, on which they are moved by means of a Inclined bush and a rotary bearing are arranged. The inclined bushing is formed by two hollow bodies, one of which can be moved into a position rotated by 180 ° with respect to the other for the second direction of rotation.

Subject of EP 0 244 511 B1 is a storage device for weft feeders with a drum, on the outer surface of which windings of the weft are positioned by means of an arrangement actuated by the motor shaft. The drum is provided with a series of elongated openings in which rods are arranged. The rods are attached to a bracket that is mounted on an eccentric sleeve via a bearing. The sleeve is mounted on a floating joint on the motor shaft. The inclination of the sleeve to the axis of the motor shaft can be fixed.

A joint arrangement in which the bearing of the cylinder surface of such a sleeve can be adjusted on both sides from a position neutral to the drive shaft axis is shown in FIG EP 0 424 424 B1 described.

In the EP 0 643 004 B1 describes a bushing that can be rotated and angled with respect to a drive shaft.

From the EP 1 796 994 B1 a yarn delivery device with a housing for knitting machines is known. The housing rotatably supports a drive shaft and carries a stationary storage body. The storage body has a support rod cage and a separation rod cage in its interior. The separation rod cage has an axis that is inclined relative to the axis of the drive shaft and is eccentric. It is rotatably supported on a bearing structure that includes a cylinder surface that is integrally formed at a free end of the drive shaft. The arrangement described enables narrow storage bodies which can be used, for example, in large numbers on a circular knitting machine.

A narrow storage body on which the thread turns are arranged separately can only take up a limited length of yarn. The amount of yarn required can vary greatly depending on the product that is manufactured on a knitting machine.

The object of the invention is to develop a yarn delivery device that can accommodate a larger amount of yarn in a narrow storage body. It is also the task to develop a system with a thread delivery device in which the thread delivery device can be converted by simple measures.

The object is achieved by the features of a thread delivery device and a system with the thread delivery device described below.

A thread delivery device according to the invention for supplying a thread to a textile machine is provided with a housing and with a storage device from which the thread is drawn off by the textile machine. The thread delivery device has a winding element for winding the thread onto the storage device and a drivable shaft with an axis for driving the winding element. The thread delivery device comprises a magnet arrangement for fixing the storage device to the housing. The storage device has a storage body and a wobble body.

The wobble body, together with a wobble bearing unit, forms a wobble unit of the thread delivery device. The wobble body has a bushing and conveying elements connected to the bushing. The wobble bearing unit comprises a bearing bush arranged on the shaft with a wobble section with an obliquely cylindrical lateral surface, the axis of which extends obliquely to the axis of the shaft, and at least one bearing arranged on the bearing bush for bearing the bush.

The wobble unit is designed to convey yarn turns wound on the storage body at a distance in a separation section. The conveyor elements can be moved cyclically through the wobble bearing unit through elongated openings of the storage body beyond an envelope surface of the storage body. The winding elements convey the yarn turns at a distance from one another in the direction of a withdrawal end of the storage body.

The envelope surface of the storage body has a polygonal circumference through the openings.

The withdrawal end of the storage body is the outer edge of the storage body via which the thread is drawn off towards the textile machine.

The wobble body mounted on the wobble bearing unit executes a wobble movement when the shaft rotates, during which the conveying elements in the separation section are cyclically moved beyond the envelope surface of the storage body and back. The yarn turns wound on the storage body of the storage device are lifted off and placed at a certain distance from one another. This wobbling movement of the wobble body leads to a separation of the yarn turns.

The wobble unit is designed for this purpose, in a collecting section which adjoins the separation section and above a trigger height of the storage body is arranged to push the yarn turns wound on the storage body without any distance from one another in the direction of the withdrawal end of the storage body. The draw-off height is the height in the course of the storage body from which the thread is drawn off the storage body. The trigger height is arranged above the trigger end of the storage body. You can, e.g. B. vary depending on the quality of the thread.

There is essentially no separation in the area of the collecting section. Instead, the yarn turns wound on the storage body and coming from the separation section are brought together, i. H. pushed side by side with touch. The thread turns are pushed further by previous thread turns.

In one embodiment, in which the thread delivery device has a fill level sensor, the draw-off height, which delimits the collecting section at the draw-off end of the storage body, is at the level of a measuring plane of the fill level sensor.

In one example, a fill level sensor is designed as a resilient element which is arranged on the storage body in the lower region of the storage body. It is triggered when a certain amount of thread is arranged on the level sensor. For example, the plane perpendicular to the axis of the shaft at the level of the last thread turn is defined as the measuring plane before the level sensor triggers.

In another example, the level sensor is designed as an optical sensor. For example, the plane perpendicular to the axis of the shaft that the optical sensor detects is defined as the measuring plane.

In one embodiment, the collecting section extends over a height of the storage body of 2 mm to 10 mm. In one embodiment, the collecting section extends over a height of the storage body of 3 mm to 7 mm.

The length of the collecting section is selected so that 10 to 50 yarn turns are adjacent to one another in the collecting section. I.e. the length of the collecting section S2 corresponds to a distance of 10 to 50 yarn turns lying next to each other. In particular, the length of the collecting section corresponds to 15 to 40 yarn turns lying against one another.

In one embodiment, the wobble unit has a bearing bush, an axis of the oblique-cylindrical outer surface of the wobble section of the bearing bush intersecting the axis of the shaft at a point which is in the region of the trigger end, ie at or below the trigger height, of the storage body.

In an alternative, the conveying elements are arranged along the collecting section essentially within the envelope surface of the storage body. In one embodiment, in which the conveying elements extend along the collecting section, the conveying elements are chamfered inwards along the collecting section. In one embodiment, in which the conveying elements extend along the collecting section, the conveying elements are arranged to be movable up to the envelope surface of the storage body. I.e. the conveying elements briefly touch the thread turns in the area of the collecting section during the wobbling movement. The thread turns are slightly raised. This ensures that the yarn turns lying next to each other are shifted without overlaps in the collecting section.

In a further alternative, the conveying elements extend essentially along the separation section.

In one embodiment, the wobble unit has a bearing bush, the axis of the cylindrical outer surface of the wobble section of the bearing bush intersecting the axis of the shaft at a point which is in the region of a transition between the separation section and the collecting section.

A system has a thread delivery device and an exchange unit.

The wobble unit or elements of the wobble unit of the exchange unit are designed for a separation area which extends up to the trigger height. The separation area of the exchange unit extends over the separation section and the collection section of the thread delivery device. A collecting section is not provided when using this exchange unit.

In one embodiment, in which the thread delivery device has conveyor elements which are arranged along the collecting section essentially within the envelope surface of the storage body or only extend along the separation section, the exchange unit has conveyor elements. The conveyor elements of the exchange unit extend along the separation area. They can be moved beyond the envelope surface of the storage body through the openings in the separation area. In one embodiment, the exchange unit comprises the conveyor elements. In one embodiment, the exchange unit comprises a wobble body with the conveying elements.

In one embodiment, in which the thread delivery device has a bearing bush, the axis of the oblique-cylindrical outer surface of the wobble section intersecting with the axis of the shaft at a point which intersects at a transition between the Separation section and the collecting section, the exchange unit comprises another bearing bush.

In an alternative, the exchange unit has a bearing bush, the oblique-cylindrical outer surface of the wobble section intersecting the axis at a point which is above the trigger height. Here is z. B. the inclination, d. H. the angle between the axis of the oblique-cylindrical outer surface and the axis of the shaft, different from the corresponding one of the thread delivery device.

In another alternative, the position of the intersection is changed.

In one example, the bearing bush of the exchange unit has an axis of the oblique-cylindrical outer surface of the wobble section that intersects the axis of the shaft at a point that is at or below the trigger height of the storage body.

In one embodiment, the exchange unit only comprises the bearing bush.

In one embodiment, the exchange unit comprises a wobble bearing unit with the bearing bush.

A thread delivery device according to the invention is designed to deliver a thread to a knitting machine. The knitting machine is a circular knitting machine or a flat knitting machine or a knitting machine or a similar machine. A thread delivery device according to the invention is alternatively designed to deliver a weft thread to a weaving machine.

• Fig. 1 eine schematische Darstellung eines erfindungsgemäßen Fadenliefergerätes eines ersten Beispiels anhand einer Seitenansicht;
• Fig. 2 einen Schnitt im Wesentlichen durch das Aufwickelelement und die Speichervorrichtung des Fadenliefergerätes der Figur 1 parallel zur Achse der Welle;
• Fig. 3 eine schematische Darstellung einer Speichervorrichtung des Fadenliefergerätes mit Garnwindungen, eine schematische Darstellung eines Ausschnittes eines Schnittes durch das die Speichervorrichtung senkrecht zur Achse der Welle, wobei der Ausschnitt ein in einer Öffnung eines Speicherkörpers angeordnetes Förderelement zeigt und schematische Darstellungen der Bewegung des Förderelementes an zwei verschiedenen Positionen im Bereich eines Separationsabschnittes;
• Fig. 4 eine schematische Darstellung eines Schnittes durch das Förderelement parallel zur Achse der Welle und eine schematische Darstellungen der Bewegung des Förderelementes im Bereich eines Sammelabschnittes, und zwar eine auf die Ebene projizierte Bewegung des Kontaktpunktes zwischen Förderelement und Faden;
• Fig. 5 eine schematische Darstellung eines Schnittes durch ein Förderelement eines Fadenliefergerätes einer Alternative des ersten Beispiels, wobei der Schnitt parallel zur Achse der Welle verläuft;
• Fig. 6 eine schematische Darstellung der Speichervorrichtung mit Garnwindungen des Fadenliefergerätes eines Systems mit dem Fadenliefergerät des ersten Beispiels und mit einer Austauscheinheit, wobei bei der dargestellten Speichervorrichtung die Förderelemente durch Förderelemente der Austauscheinheit ausgetauscht sind, und schematische Darstellungen der Bewegung eines Förderelementes an drei Positionen im Bereich eines Separationsbereiches;
• Fig. 7 eine schematische Darstellung eines Schnittes durch das Förderelement der Austauscheinheit des Systems mit dem Fadenliefergerät des ersten Beispiels, wobei der Schnitt parallel zur Achse der Welle verläuft;
• Fig. 8 eine schematische Darstellung einer Speichervorrichtung eines Fadenliefergerätes eines zweiten Beispiels mit Garnwindungen und schematische Darstellungen der Bewegung eines Förderelementes an einer Position im Bereich eines Separationsabschnittes und an einer Position am Übergang vom Separationsabschnitt zum Sammelabschnitt;
• Fig. 9 eine schematische Darstellung eines Schnittes durch eine Taumeleinheit mit einer Lagerbuchse des Fadenliefergerätes des zweiten Beispiels, wobei der Schnitt parallel zur Achse der Welle verläuft;
• Fig. 10 eine schematische Darstellung eines Schnittes durch ein Förderelement des Fadenliefergerätes des zweiten Beispiels, wobei der Schnitt parallel zur Achse der Welle verläuft;
• Fig. 11 eine schematische Darstellung eines Schnittes durch eine Taumeleinheit mit einer Lagerbuchse einer Austauscheinheit eines Systems mit dem Fadenliefergerät des zweiten Beispiels, wobei der Schnitt parallel zur Achse der Welle verläuft; und
• Fig. 12 eine schematische Darstellung eines Schnittes durch eine Taumeleinheit mit einer Lagerbuchse einer weiteren Austauscheinheit eines Systems mit dem Fadenliefergerät des zweiten Beispiels, wobei der Schnitt parallel zur Achse der Welle verläuft.

The invention is further explained with the aid of examples shown schematically in the drawings. Show it:

• Fig. 1 is a schematic representation of a yarn delivery device according to the invention of a first example based on a side view;
• Fig. 2 a section essentially through the winding element and the storage device of the thread delivery device Figure 1 parallel to the axis of the shaft;
• Fig. 3 a schematic representation of a storage device of the thread delivery device with yarn turns, a schematic representation of a section of a section through which the storage device is perpendicular to the axis of the shaft, the section showing a conveying element arranged in an opening of a storage body and schematic representations of the movement of the conveying element at two different positions in the area of a separation section;
• Fig. 4 a schematic representation of a section through the conveying element parallel to the axis of the shaft and a schematic representation of the movement of the conveying element in the region of a collecting section, specifically a movement of the contact point between the conveying element and the thread projected onto the plane;
• Fig. 5 a schematic representation of a section through a conveying element of a yarn delivery device of an alternative of the first example, the section running parallel to the axis of the shaft;
• Fig. 6 is a schematic representation of the storage device with yarn turns of the yarn delivery device of a system with the yarn delivery device of the first example and with an exchange unit, the conveying elements being replaced by conveying elements of the exchange unit in the illustrated storage device, and schematic representations of the movement of a conveying element at three positions in the area of a separation area ;
• Fig. 7 a schematic representation of a section through the conveying element of the exchange unit of the system with the yarn delivery device of the first example, the section running parallel to the axis of the shaft;
• Fig. 8 a schematic representation of a storage device of a yarn delivery device of a second example with yarn turns and schematic representations of the movement of a conveying element at a position in the region of a separation section and at a position at the transition from the separation section to the collecting section;
• Fig. 9 is a schematic representation of a section through a wobble unit with a bearing bush of the yarn feeder of the second example, the section running parallel to the axis of the shaft;
• Fig. 10 is a schematic representation of a section through a conveyor element of the yarn delivery device of the second example, the section running parallel to the axis of the shaft;
• Fig. 11 a schematic representation of a section through a wobble unit with a bearing bush of an exchange unit of a system with the thread delivery device of the second example, the section running parallel to the axis of the shaft; and
• Fig. 12 a schematic representation of a section through a wobble unit with a bearing bush of a further exchange unit of a system with the thread delivery device of the second example, the section running parallel to the axis of the shaft.

First example: Thread delivery device and system with the thread delivery device.

An in Figure 1 Thread delivery device 1 shown for delivering a thread 40 to a textile machine is designed as a storage thread delivery device. The thread delivery device 1 has a housing 2 and a storage device with a storage body 3, from which a thread 40 is drawn off by the textile machine. The textile machine is, for example, a circular knitting machine.

The housing 2 comprises a holder 2a and a drive housing 2b. The holder 2a is provided with a fastening device for fastening the thread delivery device 1 to the textile machine, for example to a machine ring of the circular knitting machine. In one embodiment, the fastening device is attached on the side opposite the holder 2a. This is indicated by an arrow 4a. In this embodiment, the housing comprises a contact plate 2c.

In a further embodiment, the fastening device is attached to the side of the holder 2a instead of the contact plate 2c. This is indicated by an arrow 4b.

The thread delivery device 1 has a drivable shaft 5 on which the storage body 3 is arranged, the shaft 5 being rotatably mounted relative to the storage body 3. I.e. the storage body 3 can be fixed while the shaft 5 is rotating. An axis A of the shaft 5 is in the Figures 1 to 3 indicated by a dashed line. A drive of the shaft 5, which is not visible in the figures, is arranged in the drive housing 2b. The holder 2a extends parallel to the shaft 5 along the storage body 3.

The Figure 2 shows a section of a section through the thread delivery device 1 of the Figure 1 parallel to the axis A of the shaft 5, which essentially comprises the winding element and the storage device.

The thread delivery device 1 has a magnet arrangement by means of which the storage device with the storage body 3 can be fixed to the housing 2. The magnet arrangement comprises a first magnet unit 6, which is arranged on the housing 2, and a second magnet unit 7, which is arranged on the storage body 3 of the storage device. The first magnet unit 6 has a first ring or cage 6a, which is formed at the lower end of the drive housing 2b in the drawing and concentric to the shaft 5, and first permanent magnets 6b arranged on the ring 6a. The second magnet unit 7 has a second ring or cage 7a formed concentrically to the shaft 5 and second permanent magnets 7b arranged on the ring 7a.

In operation, the permanent magnets 6b of the first ring 6a and the permanent magnets 7b of the second ring 7a are arranged such that there is an attractive force between the two rings 6a and 7a.

In this example, the second magnet unit 7 is designed as a separate element which is rotatably arranged on the shaft 5. The second magnet unit 7 is designed to be connectable to the storage body 3 of the storage device.

The storage device with the storage body 3 is fixed in operation by the magnet arrangement with the two magnet units 6, 7 on the housing 2, specifically on the drive housing 2b.

The storage body 3 is designed as a storage drum with a body axis that runs parallel to the axis A of the shaft 5 and essentially corresponds to this.

The storage body 3 is at its withdrawal end, ie in Figure 1 and 2 rounded lower end to form a clamping surface 3a. It has axially extending openings 3b on its outer circumference. I.e. the openings 3b extend in an envelope surface of the storage body 3 parallel to the axis A of the shaft 5.

The storage body 3 is provided with a fill level sensor FS, which is arranged in the lower region of the storage body 3.

The level sensor FS comprises a resilient element and a switching element. The level sensor FS is actuated when the resilient element is pressed in the direction of axis A by wound yarn windings W and the switching element is triggered. In one example, the fill level sensor FS comprises a Hall sensor which is arranged in the housing arm 2b and is not shown in the drawing.

The plane in which the outermost yarn turns are arranged when the level sensor FS is actuated by the yarn turns W is referred to below as the measurement plane ME of the level sensor FS.

At the winding end of the storage body 3, in the Figures 1 to 3 Above, a winding element 8 is arranged for winding the thread 40 onto the storage body 3 of the storage device. The thread 40 is wound onto the storage body 3 in turns, which are referred to as thread or yarn turns.

The winding element 8 is arranged on the shaft 5. The winding element 8 can be fixed on the shaft 5 and can be driven by the shaft 5. The winding element 8 is arranged between the first magnet unit 6 and the second magnet unit 7.

The winding element 8 is concentric and disc-shaped around the shaft 5. In this example, the winding element 8 is designed as a conical disk. A thread guide element 8a is formed on the outer circumference of the winding element 8.

The winding element 8 is arranged on the shaft 5 so as to be displaceable in the axial direction.

The shaft 5 is formed in its upper section as a hollow shaft with a cylindrical cavity 5a. The cavity 5a ends at a height in the region of the winding element 8. Starting from the cavity 5a, the shaft 5 has an opening 5b. The in Figure 2 Thread 40, not shown, is guided in operation through the cavity 5a and the opening 5b to the winding element 8. The winding element 8 has a guide channel 8b which ends at the thread guide element 8a.

The winding element 8 projects with its guide channel 8b into the opening 5b of the shaft 5. In the region of the opening 5b of the shaft 5, which has a groove running in the axial direction, the winding element 8 is displaceable in the axial direction and at least along a cleaning path L in the radial direction Direction.

The thread delivery device 1 has a bearing device which rotatably supports the shaft 5 with respect to the second magnet unit 7 and the storage device. The bearing device is arranged on the shaft 5 so as to be displaceable in the axial direction.

In addition to the storage body 3, the storage device comprises a wobble body 9 which is arranged in the interior of the storage body 3. The wobble body 9 has a bush 9a, conveying elements 9b connected to the bush 9a and an elastic element 9c. The conveying elements 9b are arranged in the axially extending openings 3b of the storage body 3.

The elastic element 9c is designed as a foam body which extends in a ring around the shaft 5. The elastic element 9c is connected to the storage body 3 via a positive connection, the wobble body 9 being movable to a small extent with respect to the storage body 3 due to the elasticity of the elastic element 9c.

The bearing device comprises a first bearing unit 10 for rotatably mounting the shaft 5 relative to the storage body 3 with the second magnet unit 7 and a second bearing unit, hereinafter referred to as wobble bearing unit 11 for rotatably supporting shaft 5 with respect to wobble body 9.

In this example, the shaft 5 extends through the storage device. The first bearing unit 10 has a first bearing 12 in the form of a ball bearing and a second bearing 13 in the form of a ball bearing. The first bearing 12 is arranged for the rotatable mounting of the shaft 5 with respect to the second magnet unit 7 on the shaft 5 below the winding element 8 and above the storage body 3. The second bearing 13 is for the rotatable mounting of the shaft 5 relative to the storage body 3 at the lower end of the storage body 3 and in the region of the outer, ie. H. arranged lower, end of the shaft 5.

The wobble bearing unit 11 closes in the direction of the outer end of the shaft 5, in Figure 2 below, to the bearing 12 for the second magnet unit 7. It is located between the bearings 12 and 13 of the first bearing unit 10. The wobble bearing unit 11 comprises a bearing bush 14 arranged on the shaft 5 with sections with a lateral surface 14a, 14c cylindrical to the axis A of the shaft 5 and with a middle wobble section with an obliquely cylindrical, ie cylindrical and oblique to the axis A, lateral surface 14b. I.e. in the wobble section, an axis B1 of the lateral surface 14b runs obliquely, and at an acute angle, to the axis A of the shaft 5. The wobble bearing unit 11 also has two bearings 15, 16 which are designed as ball bearings and which are arranged next to one another and which on the wobble section of the bearing bush 14 are arranged.

The bearing bush 14 is formed in several parts in this example. A part of the bearing bush 14 comprises the upper section with the cylindrical lateral surface 14a and the wobble section with the obliquely cylindrical lateral surface 14b. This part with the wobble section, which carries the bearings 15, 16 and causes the wobble movement of the wobble cylinder 9, is also referred to as a helical hub. The other part, also referred to as a clamping bush, comprises the lower section with the cylindrical lateral surface 14c. The helical hub and the clamping bush can be connected to each other by positive locking.

The two bearings 15, 16 are arranged in the wobble section of the bearing bush 14 on the bearing bush 14 and thus on the shaft 5. In one example, the bearings 15, 16 are firmly connected to the wobble body 9. For example, they are injected into the socket 9a. The wobble body 9 can be rotated on the two bearings 15, 16 and is therefore arranged to wobble on the shaft 5.

The wobble bearing unit 11 for the wobble body 9 is arranged axially displaceably on the shaft 5 and guided radially. It comprises a fitting element 17 which is connected to the bearing bush 14 and is arranged on the shaft 5. It is designed as an elongated, cuboid element.

The bearing bush 14 has on its inner diameter a guide groove 14d in which the fitting element 17 is arranged. The fitting element 17 is arranged in the guide groove 14d with a positive fit. The shaft 5 has a corresponding guide opening 5c which extends in the axial direction. The fitting element 17 is guided radially in this guide opening 5c.

The thread delivery device 1 comprises a locking device for tensioning the bearing device and the winding element 8. The locking device has a locking element 18, which is arranged at the outer, lower end of the shaft 5 in the figures. The locking element 18 is connected to the shaft 5 via a thread. I.e. the locking element 18 is designed to be displaceable on the shaft 5 via the threaded connection.

The second bearing 13 of the first bearing unit 10 is arranged on the locking element 18. The second bearing 13 is designed to be displaceable on the shaft 5 with the locking element 18 via the threaded connection. The storage body 3 is rotatably mounted on the second bearing 13.

By fixing the second magnet unit 7 to the first magnet unit 8, the storage body 3 connected to the second magnet unit 7 is fixed to the housing 2. The rotatable mounting by the first bearing unit 10 enables a fixed storage body 3 with the shaft 5 rotating. The wobble body 9 arranged in the interior of the storage body 3 on the bearing bush 14 executes a wobbling movement due to the rotation of the shaft 5.

The wobble body 9 and the wobble bearing unit 11 form a wobble unit.

The operation of the wobble unit is illustrated by a schematic representation of a storage device of the thread delivery device 1 with thread turns W on the right side of the Figure 3 explained.

The wobble unit is designed to convey yarn windings W wound on the storage body 3 at a distance in an upper separation section S1. For this purpose, the conveying elements 9b can be moved through the openings 3b beyond an enveloping surface of the storage body 3. The wobble unit is additionally designed in a collecting section S2 on the storage body 3 that adjoins the separation section S1 to wind wound yarn turns W without a distance from each other up to a trigger height of the storage body 3. The trigger height is arranged at the level of the measuring level ME of the level sensor FS.

Figure 3 provides on its left side a schematic representation of a section of a section through the thread delivery device 1 of the Figure 1 perpendicular to the axis A of the shaft W, the section showing a conveying element 9b arranged in an opening 3b of the storage body 3. Below are in Figure 3 schematic representations, namely projections, of the movement of the conveying element 9b at two different positions, namely an upper and a lower position, can be seen in the region of the separation section S1. The conveying element 9b executes a projected circular movement in the region of the opening 3b, namely around a circumferential line Um between an opening secate U1 formed by the opening 3b and a circumferential tangent U2 of the circumference of the storage body 3. In this example, the circular movement is greater in the upper position than in the lower position.

The size and the change in the size of the circular movement is determined by the outer surface of the bearing bush 14 in the wobble section. In this example, an axis B1 of the obliquely cylindrical outer surface of the wobble section intersects the axis A of the shaft 5 at a point P1 which is below the trigger height of the storage body 3.

Figure 4 shows on the left side a conveyor element 9b of this example. The conveying element 9b is chamfered inwards in the collecting section S2. In this example, in which the conveying elements 9b extend beyond the separation section S1 along the collecting section S2, they are only moved within the envelope surface of the storage body 3. This is in the schematic representation of the movement of the conveyor element in Figure 4 seen on the right.

In the operation of the thread delivery device 1 with the housing 2, a thread 40 is supplied to a textile machine, the thread 40 being drawn off from the storage device by the textile machine. The thread 40 is wound onto the storage device by the winding element 8. The winding element 8 is driven by the driven shaft 5.

The storage device is fixed by the magnet arrangement with a first magnet unit 6 on the housing 2 and a second magnet unit 7 on the storage device on the housing 2. The storage device has a storage body 3 and a wobble body 9.

Through the wobble unit comprising the wobble body 9 and the wobble bearing unit 11, yarn turns W wound on the storage body 3 are conveyed at a distance from one another in the separation section S1.

The wobble unit also pushes the wound and separated yarn windings W in the collecting section S2, which adjoins the separation section S1, in the direction of the lower edge of the storage body 3.

The beveled conveying elements 3b are only moved along the separation section S1 through the openings 3b of the storage body 3 beyond the envelope surface of the storage body 3. The circumference of the envelope surface, ie an envelope curve, is defined by a polygon made up of sections of the circumferential tangents U2 and the opening seconds U1 (cf. Figure 3 ) educated.

The length of the collecting section S2 is selected such that 10 to 30 yarn turns W lie against one another in the collecting section S2. In this example, about 20 yarn turns W are adjacent to one another in the collecting section S2.

In an alternative, the wobble unit is designed in such a way that the yarn turns are raised at least in a part of the collecting section S2 by alternative conveying elements. The length of the collecting section S2 is selected such that 20 to 35 yarn turns in the collecting section S2 lie against one another.

Figure 5 shows one of the conveyor elements 9g of an alternative of the first example. The conveying element 9b extends along the separation section S1. That is, the conveyor elements 9b only extend from above along the separation section S1. The conveying elements 9b are shorter than the openings 3b, the openings 3b of the storage body 3 being empty in the collecting section S2.

A system with a thread delivery device 1 of the first example comprises an exchange unit. The exchange unit has a wobble unit or elements of the wobble unit for a separation area S10, which extends up to the trigger height of the storage body 3.

The functioning of the wobble unit of the exchange unit is illustrated by a schematic representation of a storage device of the thread delivery device 1 with thread turns W on the right side of the Figure 6 , similar to that of Figure 3 , explained. The wobble unit is designed to convey yarn windings W wound on the storage body 3 in the separation area S10 at a distance during operation.

Figure 7 shows one of the conveyor elements 9z of the exchange unit. The conveying element 9z extends along the separation area S10.

Figure 6 puts on your left side, much like Figure 3 show schematic representations of the movement of one of the conveying elements 9z at three different positions, namely an upper, a middle and a lower position, in the separation area S10. In this example, the circular movement of the conveying element decreases from top to bottom.

The size and the change in the size of the circular movement is determined by the lateral surface of the (unchanged) bearing bush 14 in the wobble section. As mentioned, the axis B1 of the cylindrical outer surface of the wobble section intersects the axis A of the shaft 5 at the point P1, which is located in the region of the withdrawal end of the storage body 3, in particular at or below the withdrawal height of the storage body 3.

In an alternative, the exchange unit comprises the conveyor elements 9z. For the exchange, the conveying elements 9b are removed from the wobble body 9 and the conveying elements 9z of the exchange unit are attached to the wobble body 9.

In a further alternative, the exchange unit comprises a wobble body 9 with the conveying elements 9z. For exchange, the wobble body 9 is replaced by the alternative wobble body.

In a further alternative, the exchange unit comprises a wobble unit with the wobble body 9 with the conveying elements 9z. For the exchange, the wobble unit of the thread delivery device 1 is replaced by the wobble unit of the exchange unit.

Second example: thread delivery device and system with the thread delivery device.

The second example corresponds to the first example except for the features described below.

Figure 8 shows, similar to that Figures 3 and 6 , the operation of the wobble unit of the second example, Figure 9 a schematic representation of a wobble unit 90 with a bearing bush 140 of the second example and Figure 10 a conveying element 90b of the second example.

In the Figure 8 To see schematic representations of the movement of a conveying element 90b at an upper position in the separation section S1 and at a lower position at the transition from the separation section S1 to the collecting section S2 show that the circular movement of the conveying element 90b in the opening 3b of the storage body 3 likewise from top to bottom lose weight.

The size and the change in the size of the circular movement is determined by the obliquely cylindrical outer surface 140b of the bearing bush 140 in the wobble section. In this example, an axis B2 of the oblique cylindrical outer surface 140b of the wobble section intersects the axis A of the shaft 5 at a point P2 which is located at the transition between the separation section S1 and the collection section S2.

In the Figure 9 The wobble unit shown shows the wobble body 90 with the bush 90a and the conveying elements 90b, the wobble bearing unit 110 with the bearing bush 140 and the bearings 15, 16. The elastic element is not shown.

The axis B2 of the obliquely cylindrical outer surface 140b extends at an angle a of 1 ° to 5 °, to the axis A of the shaft 5. The angle α is preferably 2 ° to 3 °.

The position of the intersection P2 of the axis B2 with the axis A determines the start of the collecting section S2 after the separation section S1. The length of the collecting section S2 is 3 mm to 20 mm with a length of the separation section S1 of 30 mm to 70 mm.

The length of the collecting section S2 is z. B. 3% to 35% of the separation section S1.

In this example, the angle α is approximately 2.3 °, the length of the separation section S1 is approximately 40 mm and the length of the collecting section S2 is approximately 10 mm.

A system with a thread delivery device 1 of the second example comprises an exchange unit. In an alternative, the exchange unit has a wobble unit with a bearing bush 140 ′, which is shown in FIG Figure 11 is shown.

The axis B2 'of the obliquely cylindrical outer surface 140'b extends at a somewhat larger angle α'. This leads to a somewhat stronger separation of the yarn turns.

The length of the collecting section S2 of the exchange unit is e.g. B. slightly less than that of the yarn feeder 1 of the second example, d. H. the collecting section S2 is somewhat shorter.

In this example, the angle α 'is approximately 2.8 °, the length of the separation section S1 is approximately 85 mm and the length of the collecting section S2 is approximately 6 mm.

By using the exchange unit, the separation and the amount of yarn turns on the storage body 3 can be varied.

In an alternative, the exchange unit comprises only the bearing bush 140 'with the obliquely cylindrical outer surface 140'b.

In an alternative, the angle a 'of the exchange unit is smaller than that of the thread delivery device 1. In a further alternative, the length of the collecting section S2 of the exchange unit is greater than that of the thread delivery device 1.

In a further alternative, the exchange unit has a wobble bearing unit with a bearing bush 141, which in Figure 12 is shown.

The bearing bush 141 is designed for a separation area S11, which extends to the trigger height of the storage body 3, i. H. for a separation without a collecting section.

An axis B10 of the oblique cylindrical lateral surface 141b extends at an angle a and intersects the axis A of the shaft 5 at a point P10 at the trigger height; in an alternative below the trigger height.

The angle α and the intersection point P10 corresponds to z. B. that of the first example, first alternative.

By using the exchange unit, the thread delivery device 1 can be converted to a separation along the storage body.

In an alternative, the exchange unit only comprises the bearing bush 141 with the obliquely cylindrical outer surface 141b.

LIST OF REFERENCE NUMBERS

1

Yarn feeder

2

casing

2a

holder

2 B

drive housing

3

storage body

3a

clamping surface

3b

openings

4

fastening device

5

wave

5a

cavity

5b

opening

5c

guide opening

6

first magnet unit

6a

first ring

6b

first permanent magnets

7

second magnet unit

7a

second ring

7b

second permanent magnets

8th

takeup

8a

Thread guiding element

9

oscillatory body

9a

Rifle

9b

Conveyor element of the first example

9c

elastic element

9g

alternative conveyor element of the first example

9 z

Conveyor element of the exchange unit of the first example

10

first storage unit

11

second storage unit

12

camp

13

camp

14

bearing bush

14a

cylindrical surface

14b

oblique cylindrical surface

14c

cylindrical surface

14d

guide

15

camp

16

camp

17

pass element

18

locking

20

Brakes

40

thread

90

tumbling body

90a

Rifle

90b

conveying elements

140

Bearing bush of the second example

140b

oblique cylindrical surface

140 '

alternative bearing bush of the second example

140'b

oblique cylindrical surface

141

Bearing bush of the exchange unit of the second example

141b

oblique cylindrical surface

A

axis

W

yarn loops

FS

level sensor

S1

separation section

S2

collecting section

S10

separation area

S11

separation area

B1

axis

B10

axis

B2

axis

B2 '

axis

P1

intersection

P2

intersection

P2 '

intersection

P20

intersection

ME

measuring plane

Claims (10)

Thread delivery device (1) for delivering a thread (40) to a textile machine with a housing (2), with a storage device, from which the thread (40) is drawn off by the textile machine, with a winding element (8) for winding the thread (40 ) on the storage device, with a drivable shaft (5) with an axis (A) for driving the winding element (8), with a magnet arrangement for fixing the storage device to the housing (2), the storage device having a storage body (3) and a wobble body (9) has
a wobble unit being formed from the wobble body (9) of the storage device and a wobble bearing unit (11),
wherein the wobble body (9) has a bushing (9a) and conveying elements (9b) connected to the bushing (9a), which are arranged in axially extending openings (3b) of the storage body (3),
wherein the wobble bearing unit (11) has a bearing bush (14, 140, 140 ') arranged on the shaft (5) at least with a wobble section with an obliquely cylindrical outer surface (14b), the axis (B1, B2) of which is oblique to the axis (A) of the shaft (5) extends and comprises at least one bearing (15, 16) arranged on the bearing bush (14, 140, 140 ') for mounting the bush (9a),
the wobble unit being designed to convey yarn windings (W) wound on the storage body (3) at a distance in a separation section (S1), the conveying elements (9b, 9g, 9z) through the openings (3b) over an envelope surface of the storage body (3) are movable,
characterized in that
the wobble unit is designed for this purpose, in a collecting section (S2) which adjoins the separation section (S1) and is arranged above a take-off height of the storage body (3), the yarn turns (W) wound on the storage body (3) without a distance from one another Towards the lower edge of the storage body (3). Thread delivery device (1) according to claim 1, with a fill level sensor (FS), characterized in that the take-off height is arranged at the level of a measuring plane (ME) of the fill level sensor (FS). Thread delivery device (1) according to claim 1 or 2, characterized in that a length of the collecting section (S2) corresponds to a distance of 10 to 50 adjacent yarn turns (W). Thread delivery device (1) according to one of claims 1 to 3, characterized in that the axis (B1) of the obliquely cylindrical outer surface (14b) of the wobble section of the bearing bush (14) the axis (A) of the shaft (5) at a point (P1) cuts, which is at or below the trigger height of the storage body and that the conveying elements (9b) in the collecting section (S2) are chamfered inwards. Thread delivery device (1) according to one of claims 1 to 3, characterized in that the axis (B1) of the cylindrical outer surface (14b) of the wobble section of the bearing bush (14) the axis (A) of the shaft (5) at a point (P1) cuts, which is located in the area below the withdrawal height of the storage body (3) and that the conveying elements (9g) extend essentially along the separation section (S1). Thread delivery device (1) according to one of claims 1 to 3, characterized in that the axis (B2) of the obliquely cylindrical outer surface (14b) of the wobble section of the bearing bush (140) the axis (A) of the shaft (5) at one point (P2) cuts, which is located in an area at a transition between the separation section (S1) and the collection section (S2). System with a thread delivery device (1) according to one of claims 1 to 6, characterized by an exchange unit, wherein a wobble unit or elements of the wobble unit of the exchange unit are designed for a separation area (S10) which extends up to or below the trigger height of the storage body ( 3 ') extends. System according to claim 7 with a thread delivery device (1) according to claim 4 or 5, characterized in that the exchange unit has conveyor elements (9z) which extend along the separation area (S10). System according to claim 7 with a thread delivery device (1) according to claim 6, characterized in that the exchange unit has a bearing bush (141) with an axis (B1) of the obliquely cylindrical outer surface of the wobble section, which axis (A) of the shaft (5) in intersects a point (P1) which is at or below the trigger height of the storage body (3). System with a thread delivery device (1) according to claim 6, characterized in that the exchange unit has a bearing bush (140 ') with an axis (B2') of the obliquely cylindrical outer surface (140 ') of the wobble section which the axis of the shaft (5) in an alternative point (P2 ') which is located in an area at a transition between a separation section (S1) and a collection section (S2).

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