CN110656433A

CN110656433A - Yarn feeding device and method for operating a yarn feeding device

Info

Publication number: CN110656433A
Application number: CN201910574588.4A
Authority: CN
Inventors: S.德尔; R.考夫曼; F.沙尔
Original assignee: Mei Ming Ge Ero Co Ltd
Current assignee: Mei Ming Ge Ero Co Ltd
Priority date: 2018-06-28
Filing date: 2019-06-28
Publication date: 2020-01-07
Anticipated expiration: 2039-06-28
Also published as: DE102018115597A1; CN110656433B; TWI717771B; EP3591106B1; EP3591106A1; TW202005899A

Abstract

A yarn feeding device according to the invention for feeding a yarn to a textile machine is provided with: a housing; a storage device from which the yarn is drawn by the textile machine; a winding element for winding the yarn onto the storage device; a drivable shaft for driving the winding element; a magnet assembly for securing the storage device to the housing; a support mechanism for rotatably supporting the shaft relative to the storage device; and a locking device for locking the support mechanism. A winding element is configured to be rotatable with the shaft and is disposed between a first magnet unit on the housing and a second magnet unit on a storage device of the magnet assembly. For cleaning, a unit is formed on the shaft so as to be movable along a cleaning path, the unit comprising the storage device, the second magnet unit and the bearing mechanism, wherein the unit can be moved by releasing the locking element.

Description

Yarn feeding device and method for operating a yarn feeding device

Technical Field

The invention relates to a yarn feeding device and a method for feeding a yarn to a textile machine.

The yarn feeding device is provided with a housing and a storage device (Speichervorticichtung), wherein the yarn is drawn out of the storage device by the textile machine. Such yarn feeding devices are also called storage type yarn feeding devices.

Background

A storage-type yarn feeding device, referred to AS weft yarn intermediate storage, is described in DE-AS 1535641. The yarn feeding device comprises a storage device, called storage body, on which a storage body is supported in an overhanging manner (flied), a shaft and a winding element, called rotating body with a weft feeding element. The storage body is fixed against rotation. In order to reduce fly-, fluff-or ash-deposits in the region of the storage body, the rotary body is constructed according to the pattern of the fan wheel.

A mechanism for storing thread-like material is known from DE-U7902821, which has a housing, a winding body and a feed eye. The winding body and the feed eyelet rotate relative to each other. The housing has at least one slit extending parallel to the circumference of the housing for discharging air, smoke and dirt.

EP-B1335055 describes a weft thread feed device for a textile machine, which weft thread feed device has a motor housing, a stationary drum, a motor shaft and a pivoting arm which winds a weft thread onto the stationary drum. The drum is coaxially and rotatably supported on a motor shaft of a pivot arm. The device has a first set of magnets on the motor housing and a second set of magnets on the drum. The roller is held in a fixed angular position by the mutual attraction between the first and second sets of magnets.

With such a configuration of the yarn feeding device, the entry of, for example, dust and fluff and corresponding deposits, preferably in the region of the pivot arm, cannot be completely avoided. One possible solution to clean these devices is to disassemble them. This solution and the subsequent assembly are very time consuming.

Disclosure of Invention

The object of the invention is to develop a storage yarn feeding device which can be cleaned more easily.

This task is solved in the following way.

A yarn feeding device according to the invention for feeding a yarn to a textile machine is provided with a housing and a storage device from which the yarn is drawn by the textile machine. The yarn feeding device has a winding element for winding a yarn onto a storage device and a drivable shaft for driving the winding element. The yarn feeding device comprises a magnet assembly for fixing the storage device to the housing, the magnet assembly having a first magnet unit on the housing and a second magnet unit on the storage device. The yarn feeding device has a support mechanism for rotatably supporting the shaft relative to the storage device together with the second magnet unit and a locking device for axially fixing the support mechanism. The winding element is configured to be rotatable with the shaft and is arranged between the two magnet units. The storage device is provided with a storage body and a swinging body. The locking device has a locking element which is arranged on the outer end of the shaft and is connected to the shaft by means of a thread.

For cleaning, the unit consisting of the storage device, the second magnet unit and the support mechanism is configured to be movable along a cleaning path. The formation of the movable unit makes it possible to jointly withdraw the storage device together with the second magnet unit and the support means from the winding element with a defined path, i.e. a cleaning path, as a width. By withdrawing the unit along the cleaning path, a space is left between the unit and the winding element for cleaning, for example for removing deposits.

A locking element is disposed on the unit. The unit is movable along the cleaning path by release of the locking element. The method for releasing the locking element is as follows: the locking element is extracted, i.e. moved, by a threaded connection. When the locking element is released, the unit is pulled out of the winding element and a free space is formed relative to the winding element, as mentioned. The arrangement of the locking element simplifies the extraction of the unit, since it is only necessary to release the locking element.

In one example, a locking element is connected with the unit. In another example, the locking element is in contact with the unit.

In one embodiment, the cleaning path is 3mm to 10mm, wherein the unit is configured to be movable along the cleaning path. This cleaning path enables a corresponding spacing between the second magnet unit and the winding element which is sufficient for removing dirt such as fluff and dust.

In one embodiment, the magnet arrangement is designed as a magnet coupling device, wherein in the operating state the second magnet unit is coupled to the first magnet unit for fastening the storage device to the housing. The magnet units comprise, for example, permanent magnets, wherein the permanent magnets of the first magnet unit and of the second magnet unit are arranged in operation such that an attractive force is present.

In one embodiment, the shaft is designed as a hollow shaft in the drive section, through which the yarn is guided. A winding element is arranged on the shaft, wherein during operation the thread is guided from the hollow shaft through the winding element to the thread guiding element.

In one embodiment, the support means and the winding element are designed as an axially tensionable structure, wherein the axial tensioning can be generated by actuating the locking device. By releasing the locking element, the axial tensioning can be released and the unit can be withdrawn along the cleaning path for cleaning.

The provision of the axial tensioning of the support means and the winding element enables the following results to be achieved: when the tensioning is released, the unit and, if appropriate, the winding element are designed to be axially displaceable without adversely affecting the function of the yarn feed during operation. Due to the axial tensioning, axial displacement of the individual components of the bearing mechanism relative to one another or relative to the winding element is avoided during operation.

For cleaning, the axial tensioning of the support means and the winding element is first released by releasing the locking element, and the unit is then moved from the winding element on the shaft along a cleaning path in order to create the free space in this way.

In one embodiment, for cleaning, the winding element is designed to be movable on the shaft along a cleaning path, while the axial tension is released. For cleaning, the unit is first withdrawn along a cleaning path by releasing the locking element and a first gap between the second magnet unit of the unit and the winding element is cleaned. Subsequently, the winding element is withdrawn with the cleaning path as far as the second magnet unit. The second magnet unit serves here as a stop. The second gap between the winding element and the first magnet unit is likewise cleaned.

In one embodiment, the winding element is configured to be axially movable and radially guided. Thereby, the radial position of the winding element with respect to the shaft is obtained when moving the winding element for cleaning. This ensures that the yarn guiding takes place towards the winding element by means of a shaft, which is designed, for example, as a hollow shaft. After the displacement, the radial position of the winding element, which is necessary for the thread guiding, does not have to be adjusted. No additional adjustment measures are required.

In one embodiment, the locking element is arranged in front of the storage body in the direction of the outer end of the shaft. The locking element is placed on the storage body, for example, wherein the storage body can be extracted by releasing the locking element and the unit can be extracted therewith. When the locking element is released, the storage body is withdrawn from the shaft together with the locking element.

In one embodiment, the storage body has a disc-shaped bottom or top part which extends all the way under the locking element, so that the locking element rests on the bottom or top part.

In one embodiment, the locking element column extends cylindrically perpendicular to the shaft so far that it rests on an annular bottom or top part of the storage body.

In one embodiment, the support mechanism has a first support unit and a second support unit, wherein the shaft is supported in a rotatable manner relative to the storage body together with the second magnet unit by the first support unit, and wherein the shaft is supported in a rotatable manner relative to the oscillating body by the second support unit.

In one embodiment, the shaft extends through the storage device. The bearing of the first bearing unit is arranged on the locking element in the region of the lower end of the storage body. The bearing of the first support unit is arranged on a locking element connected with the shaft by a thread, which enables the unit to be extracted through said bearing. The arrangement enables the unit to be withdrawn by the locking element and helps to overcome the attractive force of the magnet coupling means and overcome the friction force when moving the unit.

In one embodiment, the second bearing unit for the pendulum body is arranged in an axially displaceable manner on the shaft and is guided radially.

The radial position of the unit, in particular of the oscillating body, with respect to the shaft is maintained by radial guidance of the second supporting unit when moving the unit. By means of the winding element, a loop of yarn is applied to the storage body, said loop of yarn being moved along the storage body by means of the oscillating body. Maintaining the radial position of the oscillating body aligned with the radial position of the winding element by maintaining the radial position of the oscillating body with respect to the shaft. Without additional measures, an undisturbed operation of the yarn feeding device and more precisely a process of transporting the yarn loops on the storage body by swinging the body is ensured after the cleaning process.

In one embodiment, the second bearing unit for the oscillating body comprises a bearing bush which is arranged in an axially displaceable manner on the shaft and is guided in the radial direction.

In one embodiment, the support bushing comprises at least one oscillation section called tilting hub. The tilting hub has a cylindrical outer circumferential surface, the axis of which is tilted, i.e. arranged at an angle, with respect to the axis of the shaft. At least one bearing for a second bearing unit of the pendulum body is arranged on the outer circumferential surface of the tilting hub, which is also referred to as tilting cylinder. When the shaft is rotated, a swinging motion of the swinging body is generated by the outer peripheral surface.

The swing body is disposed inside the storage body. The oscillating body comprises a conveying element which, during the oscillating movement of the oscillating body, at least partially protrudes through the opening of the storage body over the outer circumference of the storage body and is pulled back. The loops of yarn on the storage body are moved in the axial direction by the transport element. In one embodiment, the bearing bush is configured as a guide bush.

In one embodiment, the shaft has an inclined section with an outer circumferential surface in the shape of an inclined cylinder, the axis of which is inclined with respect to the axis of the shaft, i.e. arranged at an angle. In operation, the second bearing unit is arranged on the pivoting section. The second bearing unit for the oscillating body is thereby arranged in an axially displaceable manner on the shaft and is guided in the radial direction.

In one embodiment, the second bearing unit is movable in an inclined section of the shaft at least by the amplitude of the cleaning path.

In one embodiment, a separate mating element (Passelement) is arranged on the shaft and on the above-mentioned bearing bush of the second bearing unit, wherein the bearing bush is axially displaceable and is guided at least in the radial direction along the cleaning path. The counter element is configured, for example, as an elongated, substantially parallelepiped-shaped component.

In one embodiment, the counter element is arranged in a guide opening of the bearing bush and in a guide groove of the shaft. When withdrawn for cleaning, the support sleeve moves along the cleaning path with the guide opening over the mating element.

In an alternative embodiment, the counter element is arranged in a guide opening of the shaft and in a guide groove of the bearing bush.

In one embodiment, the length of the guide opening in the shaft is longer than the length of the mating element by the length of the cleaning path. The width of the guide opening in the shaft is slightly wider than the width of the guide groove in the guide bushing, wherein the mating element is located in the guide groove, i.e. arranged, for example, by form-locking. For cleaning, the guide bush together with the mating element is withdrawn along the cleaning path by releasing the locking device.

For the disassembly, the guide groove in the bearing bush, after overcoming the optionally low clamping force of the form-fit connection, enables the bearing bush to be moved, upon further withdrawal, onto a counter-element which rests against the end in the guide opening.

In one embodiment, the yarn feeding device has at least one connecting element, by means of which the second magnet unit and the storage body are configured to be connectable to each other in order to form the unit.

In one embodiment, the one or more connecting elements are each arranged on one of the two components, namely on the second magnet unit or on the storage body. In the connected state, the connecting element or the connecting elements are each guided in the other part in the radial direction and have a gap in the axial direction. The gap in the axial direction between the second magnet unit and the storage device ensures an axial tensioning of the support means and of the winding element. An axial tension is not established between the second magnet unit and the storage body by the one or more connecting elements.

The features and advantages of the method claims correspond to those of the device claims.

In a method for operating a yarn feeding device having a housing, a yarn is fed to a textile machine, wherein the yarn is drawn off from a storage device of the yarn feeding device by the textile machine. The yarn is wound onto the storage device by the winding element. The winding element is driven by a drivable shaft. The storage device is secured to the housing by a magnet assembly having a first magnet unit on the housing and a second magnet unit on the storage device. By means of the support mechanism, the shaft is supported in a manner that it can rotate relative to the storage device together with the second magnet unit. The support mechanism is locked by a locking device. A winding element arranged between the two magnet units rotates with the shaft. The storage device is provided with a storage body and a swinging body. The locking device has a locking element which is arranged on the outer end of the shaft and is connected to the shaft by means of a thread.

The unit consisting of the storage device, the second magnet unit and the bearing mechanism is moved along a cleaning path, wherein the unit is moved, i.e. withdrawn, by releasing the locking element.

In one embodiment, the axial tensioning of the support means and of the winding element is produced by actuating the locking element. The axial tensioning is released for cleaning by releasing the locking element.

In one embodiment, for cleaning, the winding element is moved on the shaft in the axial direction by the extent of the cleaning path L and is guided radially.

In one embodiment, the locking device is released by fixing a locking element of the locking device, which is arranged on the outer end of the shaft and is connected to the shaft by means of a thread, and rotating the shaft.

This method has the advantage that it can be handled automatically. The locking element can be fixed, for example, by means of a tool. The drive of the shaft can then be automatically controlled. That is to say, the torque and the number of revolutions can be predefined, for example, by actuating a drive motor, which forms the drive, for the shaft.

The yarn feeding device according to the invention is designed for feeding yarn to a knitting machine. The knitting machine is a circular knitting machine or a flat knitting machine or a knitting machine or the like. As an alternative, the yarn feeding device according to the invention is designed for feeding a weft yarn to a weaving machine.

Drawings

The invention will now be further explained by means of examples which are schematically shown in the drawings. In which is shown:

fig. 1 shows a schematic view of a yarn feeding wheel by means of a first exemplary side view of a yarn feeding device according to the invention;

fig. 2 shows a partial section of the yarn feeding device of fig. 1 parallel to the axis of the shaft in an operating state;

fig. 3 shows a partial section of the yarn feeding device of fig. 1 parallel to the axis of the shaft in the cleaning state; and is

Fig. 4a shows a cross section of the second magnet unit, the storage body and the oscillating body;

FIG. 4b shows an enlarged detail of FIG. 4 a;

FIG. 4c shows another enlarged detail of FIG. 4 a;

fig. 5 shows a section of a yarn feeding device of a second example parallel to the axis of the shaft in the operating state, wherein the support means is tensioned in the axial direction.

Detailed Description

The yarn feeding device 1 shown in fig. 1 for feeding a yarn 40 to a textile machine is designed as a storage type yarn feeding device. The yarn feeding device 1 has a housing 2 and a storage device with a storage body 3 from which a yarn 40 is drawn by a textile machine. Such as a circular knitting machine.

The housing 2 includes a bracket 2a and a driving housing 2 b. The holder 2a is provided with fixing means for fixing the yarn feeding device 1 on a textile machine, for example on a machine ring of a circular knitting machine. In one embodiment, the fixing means are arranged on the side opposite the holder 2 a. This is indicated by arrow 4 a. In this embodiment, the housing includes a contact plate 2 c.

In another embodiment, instead of the contact plate 2c, a fastening device is arranged on one side of the frame 2 a. This is indicated by arrow 4 b.

The yarn feeding device 1 has a drivable shaft 5 on which the storage body 3 is arranged, wherein the shaft 5 is rotatably supported relative to the storage body 3. That is, the storage body 3 can be fixed while the shaft 5 rotates. The axis a of the shaft 5 is indicated in fig. 1 to 3 with a dashed line. The drive of the shaft 5, which is not visible in the drawing, is arranged in the drive housing 2 b. The support 2a extends along the storage body 3 parallel to the axis 5.

Fig. 2 and 3 show sections of the yarn feeding device 1 of fig. 1 parallel to the axis a of the shaft 5, and more precisely fig. 2 shows a section thereof during operation and fig. 3 shows a section thereof during cleaning.

The yarn feeding device 1 has a magnet assembly by means of which the storage means can be fixed together with the storage body 3 on the housing 2. The magnet assembly comprises a first magnet unit 6 arranged on the housing 2 and a second magnet unit 7 arranged on the storage body 3 of the storage device. The first magnet unit 6 has a first ring 6a, which is formed on the lower end of the drive housing 2b in the drawing and is concentric with the shaft 5, and a first permanent magnet 6b arranged on the ring 6 a. The second magnet unit 7 has a second ring 7a, which is formed concentrically with the shaft 5, and a second permanent magnet 7b, which is arranged on the ring 7 a.

The permanent magnets 6b of the first ring 6a and the permanent magnets 7b of the second ring 7a are arranged in operation such that an attractive force exists between the two

rings

6a and 7 a.

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

The storage device with the storage body 3 is fastened to the housing 2 and more precisely to the drive housing 2b during operation by means of a magnet assembly having two

magnet units

6, 7.

The storage body 3 is configured as a storage drum having a body axis which is parallel to and substantially equivalent to the axis a of the shaft 5.

The storage body 3 is rounded at its withdrawal end, i.e. at the lower end in fig. 1 and 2, in order to form a clamping surface 3 a. The storage body has an axially extending opening 3b on its outer circumference. That is, the opening 3b extends parallel to the axis a of the shaft 5 in the envelope surface of the storage body 3.

The storage body 3 is provided with a fill level sensor FS, which is arranged in an area below the storage body 3.

On the winding end of the storage body 3, in fig. 1 to 3 at the top, a winding element 8 is arranged for winding the yarn 40 onto the storage body 3 of the storage device. The yarn 40 is wound onto the storage body 3 in the form of a coil, called yarn coil or filament coil.

The winding element 8 is arranged on the shaft 5. The winding element 8 is designed in such a way that it 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 of concentric design around the shaft 5 and is of disk-like design. In this example, the winding element 8 is configured as a conical disk. On the outer circumference of the winding element 8, a thread guiding element 8a is formed.

The winding element 8 is arranged on the shaft 5 in a movable manner in the axial direction.

The shaft 5 is designed in its upper section as a hollow shaft with a cylindrical cavity 5 a. The cavity 5a ends at the level in the region of the winding element 8. The shaft 5 has an opening 5b starting from the cavity 5 a. The thread 40, which is not illustrated in fig. 2 and 3, is guided during 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 in a thread guide element 8 a.

In operation, the winding element 8 projects with its guide channel 8b into the opening 5b of the shaft 5. In the region of the shaft 5 with the openings 5b of the recesses, which extend in the axial direction and are not visible in the drawing, the winding element 8 can be moved in the axial direction and guided in the radial direction at least along the cleaning path L.

The yarn feeding device 1 has a support mechanism which is supported rotatably with respect to the second magnet unit 7 and the storage device. The support mechanism is arranged on the shaft 5 in a manner movable in the axial direction.

In addition to the storage body 3, the storage device also comprises a swinging body 9, which is arranged inside the storage body 3. The oscillating body 9 comprises a bush 9a, a conveying element 9b connected to the bush 9a and an elastic element 9 c. The conveying element 9b is arranged in an axially extending opening 3b of the storage body 3.

The spring element 9c is designed as a foam body which extends annularly around the shaft 5. The elastic element 9c is connected with the storage body, wherein the swinging body 9 can be moved in a small scale with respect to the storage body 3 by the elasticity of the elastic element 9 c.

The support mechanism comprises a first support unit 10 for rotatably supporting the shaft 5 relative to the storage body 3 together with the second magnet unit 7 and a second support unit 11 for rotatably supporting the shaft 5 relative to the swinging body 9.

In this example, the shaft 5 extends through the storage device. The first bearing unit 10 has a first bearing 12 configured as a ball bearing and a second bearing 13 configured as a ball bearing. A first bearing 12 is arranged on the shaft 5 below the winding element 8 and above the storage body 3 in order to rotatably support the shaft 5 relative to the second magnet unit 7. The second bearing 13 is arranged for rotatably supporting 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, i.e. lower end of the shaft 5.

The second bearing unit 11 abuts a bearing 12 for the second magnet unit 7 in the direction of the outer end of the shaft, the lower end in the drawing. The second support unit is located between the

bearings

12 and 13 of the first support unit. The second supporting unit comprises a supporting bushing 14 which: has a section having cylindrical outer

peripheral surfaces

14a, 14c with respect to an axis A of the shaft 5; and has an intermediate pivot section with an outer circumferential surface 14b which is inclined cylindrical, i.e. cylindrical, and extends obliquely to the axis a. In the swivel section, the axis of the outer circumferential surface extends obliquely and more precisely at an acute angle to the axis a of the shaft 5 and intersects the axis a of the shaft 5 in the lower region of the storage device in the drawing. In this example, the axis of the outer peripheral surface of the inclined cylindrical shape intersects the axis a of the shaft 5 in the region of the extraction height of the lower face of the storage body 3. The second bearing unit 11 also has two

bearings

15, 16, designed as ball bearings, which are arranged next to one another and are arranged on the pivoting section of the bearing bush 14.

In this example, the support sleeve 14 is constructed as a multi-component structure. A part of the support bush 14 includes an upper section having a cylindrical outer peripheral surface 14a and a swing section having an inclined cylindrical outer peripheral surface 14b of the support bush 14. This part with the oscillating section, which part supports the

bearings

15, 16 and causes an oscillating movement of the oscillating body 9, is also referred to as tilting hub. The other part, also called the clamping bush, comprises a lower section with a cylindrical outer peripheral surface 14 c. The tilting hub and the clamping bushing can be connected to one another by a form-fit.

Two

bearings

15, 16 are arranged on the shaft 5 in the swivel section of the bearing bush 14. In this example, the

bearings

15, 16 are fixedly connected with the oscillating body 9. They are for example injected on the bush 9 a. The oscillating body 9 is rotatable on two

bearings

15, 16 and is thus supported in an oscillating manner on the shaft 5.

A second bearing unit 11 for the oscillating body 9 is arranged on the shaft 5 in an axially movable manner and is guided radially. The second bearing unit comprises a mating element 17, which is arranged on the bearing bush 14 and on the shaft 5. It is constructed as an elongated parallelepiped-shaped element.

The bearing bush 14 has a guide groove 14d on its inner diameter, in which the counter element 17 is arranged. The counter element 17 is arranged in the guide groove 14d in a form-locking manner. The shaft 5 has a corresponding guide opening 5c extending in the axial direction. The length of the guide opening 5c in the axial direction corresponds to the length of the mating member 17 plus the length of the cleaning path L. In this guide opening 5c, the mating element 17 is guided radially along the cleaning path L.

The yarn feeding device 1 comprises a locking device for tensioning the support mechanism and the winding element 8. The locking device has a locking element 18 which is arranged on the outer, lower end of the shaft 5 in the drawing. The locking element 18 is connected to the shaft 5 by means of a thread. That is, the locking member 18 is configured to be movable on the shaft 5 by a screw connection.

The second bearing 13 of the first bearing unit 10 is arranged on the locking element 18. The second bearing 13 is constructed as a structure that can be moved together with the locking element 18 on the shaft 5 by means of a screw connection. The storage body 3 is rotatably supported on a second bearing 13.

In this example, the second magnet unit 7 has a plurality of connecting elements 19, by means of which the second magnet unit 7 is configured to be connectable with the storage body 3 of the storage device. Each connecting element 19 is guided radially by the storage body and has a clearance in the axial direction with respect to the storage body.

Fig. 4a shows a section through the second magnet unit 7 and the storage body 3, which are shown separately for illustrating the connection. Fig. 4b and 4c show enlarged detailed views of the connecting element 19.

The connecting element 19 is configured, for example, as a clip element. A connecting element 19 is formed on the second magnet unit 7. They have the shape of hooks with a first section 19a and a second section 19 b. The connecting elements 19 each project with a second section 19b into the opening 3b of the storage body 3. The second portion 19b is guided in the opening 3b in the radial direction and has a gap in the axial direction.

As described above, the storage body 3 can be connected to the second magnet unit 7 via the connecting element 19 and connected in operation. The storage body 3 connected to the second magnet unit 7 is fixed to the housing 2 in such a manner that the second magnet unit 7 is fixed to the first magnet unit 8. The rotatable bearing achieved by the first bearing unit 10 enables a fixed storage body 3 when the shaft 5 rotates. The oscillating body 9, which is arranged on the support bush 14 inside the storage body 3, performs an oscillating movement by rotation of the shaft 5.

The storage device with the storage body 3 and the oscillating body 9, the second magnet unit 7 and the support mechanism form a unit that can be moved along the cleaning path L for cleaning.

A locking element 18 is arranged on the unit, wherein the second bearing 13 of the first bearing unit 10 is formed integrally with the locking element 18. The unit can be moved axially along the cleaning path L by releasing the locking element 18.

The support means and the winding element 8 are configured to be axially tensionable. That is to say, the support means and the winding element 8 can be moved on the shaft 5, wherein a stop, not shown in the figures, is provided on the shaft. When the locking device is actuated, that is to say when the locking element 18 is tensioned, the bearing mechanism is pressed against the winding element 8 and the winding element is pressed against the stop of the shaft 5, and therefore an axial tensioning takes place.

The braking device for adjusting the yarn tension of the yarn 40 has a braking body 20 and an adjusting device for the braking body 20. The braking device is arranged in the yarn run (Fadenlauf) behind the storage body 3, wherein the braking body 20 is arranged on the withdrawal end of the storage body 3.

The brake body 20 is designed as a cone and more precisely as a flexible brake body cone in the form of a regular truncated cone housing. The braking body is made of plastic and/or metal, for example. A corresponding or similar brake body is described, for example, in WO 2006/045410 a 1.

The axis of the braking body 20 substantially coincides with the axis a of the shaft 5, that is to say, for example, apart from lifting phenomena due to the yarn 40 or small deviations occurring when the elastic braking body 8 is deformed. The withdrawal end of the storage body 3 is rounded and forms an annular clamping surface 3a in the region of the rounding. The braking body 20 projects with its larger diameter beyond the clamping surface 3 a. The braking body can be pressed against a clamping surface 3a on the withdrawal end of the storage body 3 by means of an adjusting device.

When the thread 40 is drawn off by the textile machine, the thread 40 runs from the storage body 3 through the gap between the drawing-off end of the storage body 3 and the braking body 8 onto the clamping surface 3 a.

The brake body 20 is provided on its smaller diameter, i.e. on its end pointing away from the storage body 3, with an inner ring 21 and an outer ring 22. The inner ring 21 and the outer ring 22 are connected to each other by a snap-lock connection.

The adjusting device comprises an extraction tube 23 with an extraction eye 24, two

magnet units

25, 26 and an outlet eye 27.

The extraction tube 23 extends parallel to the axis a, possibly apart from installation tolerances. The draw-off tube 23 is that which guides the yarn 40 from its inlet end towards the storage body 3 to its opposite outlet end, that is to say by means of the regulating device.

The extraction pipe 23 is arranged on the bracket 2a of the housing 2. The upper magnet unit 25 includes a ring having permanent magnets 25b, wherein the ring is configured as the outer ring 22 of the brake body 20.

The lower magnet unit 26 includes a ring 26a having permanent magnets 26 b. The

rings

22, 26a are arranged spaced apart from each other on the extraction tube 23.

The permanent magnets 25b of the first ring 22 and the permanent magnets 26b of the second ring 26a are arranged such that there is a repulsive force between the two

rings

22 and 26 a. The spacing between the lower ring 26a and the upper ring 25a can be changed by rotation of the lower ring 26 a. The repulsive force between the

rings

22 and 26a, and thus the braking force acting on the brake body 20, increases when the pitch is reduced, and the repulsive force decreases when the pitch is expanded.

During operation of the yarn feeding device 1 with the housing 2, the yarn 40 is fed to the textile machine, wherein the yarn 40 is drawn out of the storage device by the textile machine. The yarn 40 is wound onto the storage device by the winding element 8. The winding element 8 is driven by a driven shaft 5.

The storage device is secured to the housing 2 by a magnet assembly having a first magnet unit 6 on the housing 2 and a second magnet unit 7 on the storage device. The storage device together with the second magnet unit 7 is supported by a support mechanism. The storage device has a storage body 3 and a swinging body 9. A winding element 8 arranged between the two

magnet units

6, 7 rotates together with the shaft 5. The bearing mechanism is locked by a locking device, wherein the locking device has a locking element 37 which is arranged on the outer end of the shaft 5 and is connected to the shaft 5 by means of a thread.

The unit consisting of the storage device, the second magnet unit 7 and the bearing mechanism is moved along the cleaning path L, wherein the unit is moved by releasing the locking element 37.

By actuating the locking element 37, an axial tensioning of the bearing mechanism and of the winding element 8 takes place. For cleaning, this axial tensioning is released by releasing the locking element and the unit consisting of the storage device, the second magnet unit 7 and the bearing mechanism is withdrawn along the cleaning path L. The guide bush of the bearing mechanism, i.e. the bearing bush 14, is moved axially and guided radially.

For cleaning, the winding element 8 is moved axially along the cleaning path L and guided radially.

The locking device is released by fixing the locking element 37 and rotating the shaft 5.

In an alternative, the locking element 18 is turned while the shaft 5 is fixed.

In an alternative, the yarn feeding device has a brake as described, for example, in DE 102016117506B 3.

In an alternative, the yarn feeding device has a brake as described, for example, in DE 102013113122B 4.

Second example

The yarn feeding device 1 of the second example shown in fig. 5 corresponds to the yarn feeding device 1 of the first example except for the features described below.

As in the first example, the storage device, the lower magnet unit 7, and the support mechanism constitute one unit.

The support mechanism includes a first support unit 31 for rotatably supporting the shaft 50 with respect to the storage body 30 together with the second magnet unit 7, and a second support unit 31 for rotatably supporting the shaft 50 with respect to the swinging body 9.

In this example, the drivable shaft 50 for driving the winding element 8 ends in the upper region of the storage device. That is, the shaft 50 extends through the second magnet unit 7 and the upper region of the storage body 30. The shaft also has a cavity 50a and an opening 50 b.

The first bearing unit 31 has a first bearing 33 configured as a ball bearing and a second bearing 34 configured as a ball bearing. Two bearings 33, 34 are arranged next to one another on the shaft 50 below the winding element 8 and above the storage body 3 in order to rotatably support the second magnet unit 7 and the storage body 3.

The second magnet unit 7 is configured to be connectable with the storage body 30. In this example, the second magnet unit is connected with the storage body 30 by screws, not shown.

The second bearing unit 32 has a first bearing 35 configured as a ball bearing and a second bearing 36 configured as a ball bearing. Two bearings 35, 36 are arranged side by side on a lower section of the shaft 50 in order to rotatably support the oscillating body 9. The lower section of the shaft 50 is designed as an inclined section 50d, the axis of its outer circumference extending in the upper region obliquely to the axis a of the shaft 50.

The oscillating body 9 is supported in such a way as to be able to rotate on the two bearings 35, 36 and thus oscillate on the shaft 50.

The locking device has a locking element 37 which is arranged on the outer end of the shaft 50 and is connected to the shaft 50 by means of a thread.

The locking element 37 is designed as a screw by means of which the bearing mechanism and more precisely the second bearing unit 32 can be tensioned and released towards the first bearing unit 31 and can be tensioned and released towards the winding element 8.

The locking element 37 is in contact with the storage body 30. The storage body 30 has a bottom element with an inner cylinder 30 b. The inner cylinder extends all the way to below the top of the locking element 37. This is identified by arrow C.

The inner cylinder 30b, i.e. the storage body 30 and the unit comprising the storage body 30, the second magnet unit 7 and the bearing mechanism together with it, can be moved, i.e. can be withdrawn, by releasing the locking element.

For cleaning, the locking element 37 is released to such an extent that the unit is withdrawn along the cleaning path L.

List of reference numerals

1 yarn feeding device

2 casing

2a support

2b drive housing

2c contact plate

3 storage body

3a clamping surface

3b opening

4 (fixing device)

4a arrow head (fixing device)

4b arrow head (fixing device)

5 shaft

5a cavity

5b opening

5c guide opening

6 first magnet unit

6a first ring

6b first permanent magnet

7 second magnet unit

7a second ring

7b second permanent magnet

8 winding element

8a thread guiding element

9 oscillating body

9a bush

9b conveying element

9c elastic element

10 first support unit

11 second support unit

12 bearing

13 bearing

14 support bush

Outer peripheral surface of 14a cylindrical shape

14b inclined outer peripheral surface

Outer peripheral surface of 14c cylindrical shape

14d guide groove

15 bearing

16 bearing

17 mating element

18 locking element

19 connecting element

20 braking body

21 inner ring

22 outer ring

23 draw-out pipe

24 extraction eyelet

25 magnet unit

25b permanent magnet

26 magnet unit

26a ring

26b permanent magnet

27 outlet aperture

40 yarn

Axis A

Second example

30 storage body

30b bottom

31 first support unit

32 second support unit

33 bearing

34 bearing

35 bearing

36 bearing

37 locking element

50 shaft

51a cavity

50b opening

50c inclined section

40 yarn

Axis A

P1 arrow

P2 arrow

And C arrow.

Claims

1. Yarn feeding device (1) for feeding a yarn (40) to a textile machine, having: a housing (2); -a storage device from which the yarn (40) is drawn by the textile machine; a winding element (8) for winding the yarn (40) onto the storage device; a drivable shaft (5, 50) for driving the winding element (8); a magnet assembly for fixing the storage device to the housing (2), the magnet assembly having a first magnet unit (6) on the housing (2) and a second magnet unit (7) on the storage device; -a support mechanism for rotatably supporting the shaft (5, 50) in connection with the second magnet unit (7) relative to the storage device; and a locking device for fixing the support mechanism, wherein the winding element (8) is configured to be rotatable together with the shaft (5, 50) and is arranged between the two magnet units (6, 7), wherein the storage device has a storage body (3) and a swinging body (9); and wherein the locking device has a locking element (18, 37) which is arranged on the outer end of the shaft (5, 50) and is connected to the shaft (5, 50) by means of a thread,

it is characterized in that the preparation method is characterized in that,

for cleaning, a unit is configured on the shaft (5, 50) in a manner of being movable along a cleaning path (L), the unit comprises the storage device, the second magnet unit (7) and the supporting mechanism, and

the locking element (18, 37) is arranged on the unit, wherein the unit can be moved by releasing the locking element (18, 37).

2. Yarn feeding device (1) according to claim 1, characterised in that the support mechanism and the winding element (8) are constructed in an axially tensionable configuration, wherein an axial tensioning can be generated by a tensioning of the locking element (18, 37) and can be released for cleaning by a release of the locking element (18, 37).

3. Yarn feeding device (1) as in claim 1 or 2, characterised in that the locking element (37) is arranged in front of the storage body (3) in the direction of the outer end of the shaft (50), wherein the storage body (3) and therewith the unit are movable by releasing the locking element (37).

4. Yarn feeding device (1) according to claim 1 or 2, wherein the support mechanism has a first support unit (10) for rotatably supporting the shaft (5) relative to the storage body (3) and the second magnet unit (7) and a second support unit (11) for rotatably supporting the shaft (5) relative to the swinging body (9), characterised in that the shaft (5) extends through the storage means and that a bearing (13) of the first support unit (10) is arranged on the locking element (18) in the region of the lower end of the storage body (3), wherein the bearing (13) and therewith the unit can be extracted by releasing the locking element (18).

5. Yarn feeding device (1) according to claim 1 or 2, wherein the support mechanism has a first support unit (10) for rotatably supporting the shaft (5, 50) relative to the storage body (3) and the second magnet unit (7) and a second support unit (11) for rotatably supporting the shaft (5, 50) relative to the swinging body (9), characterised in that the second support unit (11) for the swinging body (9) is arranged in an axially movable manner on the shaft (5, 50) and is guided in a radial direction.

6. Yarn feeding device (1) according to claim 5, characterised in that a separate engaging element (17) is arranged on the shaft (5) and on a bearing bush (14) of the second bearing unit (11) and that the bearing bush (14) is guided by the engaging element (17) in radial direction along the cleaning path (L).

7. Yarn feeding device (1) according to claim 1 or 2, characterised in that for forming the unit the second magnet unit (7) and the storage body (3) can be connected to each other by means of at least one connecting element (19).

8. Yarn feeding device (1) as in claim 7, characterised in that one or more connecting elements (19) are arranged on one of the two parts, namely on the second magnet unit (7) or on the storage body (3) and in the connected state are guided in the other part in the radial direction with a gap in the axial direction.

9. Method for operating a yarn feeding device (1) having a housing (2), wherein a yarn (40) is fed to a textile machine, wherein the yarn (40) is drawn by the textile machine from a storage device, wherein the yarn (40) is wound onto the storage device by a winding element (8), wherein the storage device has a storage body (3) and a pendulum body (9), wherein the winding element (8) is driven by a drivable shaft (5, 50), wherein the winding element (8) arranged between the two magnet units (6, 7) is rotated together with the shaft (5, 50), wherein the storage device is fixed on the housing (2) by means of a magnet assembly having a first magnet unit (6) on the housing (2) and a second magnet unit (7) on the storage device, wherein the shaft (5, 50) is supported by a support means in a manner rotatable with respect to the storage device together with the second magnet unit (7), and wherein the support means is locked by a locking device, wherein the storage device has a storage body (3) and a swinging body (9), and wherein the locking device has a locking element (18, 37) which is arranged on an outer end of the shaft (5, 50) and which is connected with the shaft (5, 50) by a thread,

it is characterized in that the preparation method is characterized in that,

for cleaning, the unit comprising the storage device, the second magnet unit (7) and the bearing mechanism is moved on the shaft (5, 50) along a cleaning path (L), wherein the unit is moved by releasing the locking element (18, 37).

10. Method according to claim 9, characterized in that the axial tensioning of the support means and of the winding element (8) is produced by tensioning of the locking element and is released for cleaning by releasing the locking element.

11. Method according to claim 9 or 10, characterized in that for cleaning, the unit is first moved on the shaft (5, 50) along the cleaning path (L), a first interspace between the unit and the winding element (8) is cleaned, and subsequently the winding element (8) is moved on the shaft (5, 50) along the cleaning path (L), wherein the winding element is guided in a radial direction and a second interspace between the winding element (8) and the first magnet unit (6) is cleaned.

12. Method according to claim 9 or 10, characterized in that the locking element (18) is released for cleaning by fixing it and rotating the shaft (5, 50).