WO2013182690A1

WO2013182690A1 - Thread delivery device

Info

Publication number: WO2013182690A1
Application number: PCT/EP2013/061828
Authority: WO
Inventors: Uwe Martin; Attila HORVARTH; Christopf WOERNER
Original assignee: Memminger-Iro Gmbh
Priority date: 2012-06-08
Filing date: 2013-06-07
Publication date: 2013-12-12
Also published as: DE102012104976A1; EP2859140B1; BR122017012186A2; CN104520482B; BR112014030508A2; TWI588311B; EP3178979B1; IN2014DN10356A; CN104520482A; EP2859140A1; DE102012104976B4; TWI557284B; CN106987997A; CN106987997B; TW201704579A; TW201410931A; EP3178979A1; TR201904060T4

Abstract

The invention relates to a thread delivery device (1, 50, 50', 80), which is provided with a thread delivery wheel (3), a drive shaft (4), on which the thread delivery wheel (3) is arranged, a carrier (5, 51, 83, 100) having at least one bearing retainer (22, 59, 86), and at least one rolling-element bearing (25, 26; 62, 63; 89, 90; 103, 104) for supporting the drive shaft (4). The bearing retainer has at least one undivided bearing seat (23, 24), in which the rolling-element bearing (25, 26) is arranged. The carrier (5, 51, 83, 100) is formed from at least one segment of a continuous profiled element.

Description

Yarn feeder

The invention relates to a yarn feeding device for feeding a yarn to a textile machine, in particular to a circular knitting machine, with a Fadenlieferrad, a drive shaft on which the yarn feed wheel is arranged, and a carrier with at least one bearing holder for supporting the drive shaft.

Such a yarn feeding device is known from EP 1 194 621 B1. The carrier of the yarn feeding device is designed as a two-part plastic housing. In each housing part an undivided bearing seat is arranged with an axially open to one side receiving space for a rolling bearing. In the space between the rolling bearing and the bearing seat, a squeeze element is provided, which is formed of an elastomer.

The two plastic housing parts are expensive to manufacture. For the simultaneous fulfillment of the carrier function partially thick wall areas are necessary. To compensate for manufacturing tolerances of the housing parts produced by injection molding, for example, crimping elements are required.

From WO 2008/043372 a yarn feeding device with an alternative structure is known. This yarn feeding device comprises a carrier with an upper and a lower leg, each with a bearing for a drive shaft. An additional housing is disposed below the lower leg. Here, the carrier and the housing made of different materials, such as metal and plastic, exist. The preparation of such a carrier with aligned bearing seats for the bearings is complicated to manufacture.

The object of the invention is to develop a yarn feeding device which has a carrier to be produced easily.

This object is achieved by the features of claim 1.

An inventive yarn feeding device for feeding a yarn to a textile machine has a Fadenlieferrad, a drive shaft, a carrier and at least one bearing holder with at least one undivided bearing seat and two rolling bearings for supporting the drive shaft. The yarn feed wheel is arranged on the drive shaft.

The yarn feed wheel is designed in particular for feeding a yarn to a knitting machine, preferably to a circular knitting machine. In many cases this is Yarn feeding device can be attached to the circular knitting machine so that the drive shaft, ie its axis of rotation, runs vertically and thus vertically to the axis of rotation of the circular knitting machine.

The carrier is formed from a segment of a strand having a uniform cross-section, namely an extruded profile. An extruded profile is a defined shape, e.g. cast, rolled, drawn or pressed component which has an identical cross-section over its length.

To form a carrier of a yarn feeding device from a segment of a strand profile, allows a favorable production of the carrier in larger quantities.

For the production of extruded profiles, favorable methods are available e.g. Continuous casting or extrusion. Extruded profiles are manufactured in long lengths, from a strand profile, a plurality of segments and thus can be produced by carriers.

A yarn feeding device has in an alternative on a carrier of a segment of an extruded profile. In another alternative, a yarn feeding device on a carrier of two segments of an extruded profile. In one example, the strand profiles are different for the two segments, e.g. U-profiles with different heights. In another example, both segments used for the carrier are segments of an extruded profile, e.g. a U-profile, wherein the two segments are arranged to form the carrier in mirror image.

In one embodiment, the carrier is made of at least one segment of an extruded profile made of a plastic material; formed in an alternative embodiment of a metal. The extruded profile is e.g. made of a steel, especially a stainless steel. As a result, the carrier has a high strength.

In one embodiment, the carrier is formed from at least one segment of an extruded aluminum profile. Making a support of aluminum has the advantage that it has a good stability at a relatively low weight. In addition, a requirements sufficient structure of the carrier is possible because aluminum can be deformed well.

In one embodiment, the carrier is formed from at least one segment of a continuous casting profile, ie, the extruded profile forming the carrier is produced as a continuous casting profile. The production of extruded profiles used for the carrier in the continuous casting process allows a very cost-effective production of the carrier. In one embodiment, the carrier is formed from an at least segment of an extruded profile. That is, the extruded profile forming the carrier is first produced as a semi-finished product, for example as a continuous cast profile, from which an extruded profile is subsequently produced by extrusion. During extrusion, the semifinished product, for example a block, is pressed or pulled through a die which predetermines the cross section and thus the profile.

The extruded profile can be produced by direct or indirect extrusion from a semi-finished product. In direct extrusion, if necessary, heated semi-finished product is pressed through a die with the aid of a punch. In indirect extrusion, a hollow die, at the head of which a die is located, is pressed onto the semi-finished product, possibly heated.

This somewhat more complex production than the continuous casting allows a more complex cross-section of the extruded profile as well as e.g. a curved outer contour of the extruded profile. The construction of a yarn feeding device with a carrier of an extruded profile leads to a better quality of storage of the drive shaft. Also, e.g. realize a pleasing shape of the yarn feeding device by a curved outer contour.

In one embodiment, the carrier is formed of at least one segment of an extruded aluminum profile. An extruded aluminum profile gives, as mentioned, the support ease and stability and allows a complex cross section for a large functionality allows.

In one embodiment, the carrier is formed from a segment of extruded aluminum anodized profile. This allows shiny, formed by the carrier outer surfaces of the yarn feeding device. An anodized layer also has the advantage of a higher degree of hardness of the wearer's surface. For this purpose, the strand of an extruded profile is made anodized as a whole. In an alternative segments of the extruded profile or the machined carrier are made anodized. The layer applied by anodizing on the extruded profile is colorless. In an alternative, the applied layer is colored, e.g. golden.

In one embodiment, the carrier forms at least one outer wall of a housing of the yarn feeding device. A carrier, which is formed from a segment of a strand profile, forms a maximum of four out of six outer walls of, for example, a square housing of the yarn feeding device. When used, for example, a U-shaped extruded profile of the carrier forms three outer walls. In one embodiment, one or more outer walls of the wearer are covered.

In one embodiment, the yarn feeding device has at least one housing element. The housing element is attached to the carrier and forms an outer wall of the housing of the yarn feeding device.

The housing of the yarn feeding device is formed by the outer walls formed by the carrier and / or the housing elements. In the housing components of the yarn feeding device are arranged.

In one embodiment, the yarn feeding device has additional elements which are arranged on the carrier or on a housing element or on a storage holder. Additional elements are formed, for example, as an intermediate wall in the housing or as a wheel cover for the yarn feed wheel.

In one embodiment, a housing element is formed with at least one further housing element and / or with at least one additional element as a part. This allows a single injection-molded part, for example made of plastic for one or more housing elements, if necessary, and to use one or more additional elements.

In one embodiment, a housing element and a separate additional element attached to the housing element form an interior space. In a separate interior space within the housing, which can be produced by fastening an additional element to a housing element, sensitive electronics can be arranged. Such an assembly of housing element with electronics and attached additional element can be prefabricated and e.g. be sent as a unit safely.

In one embodiment, a housing element and at least one separate additional element fastened to the housing element form an assembly. The assembly is attached to the carrier. In particular, the assembly is fastened to the carrier with screws or via a clamping connection. An assembly may be prefabricated and e.g. be sent as a unit.

In one embodiment of an assembly, the assembly additionally comprises at least one yarn feeler, e.g. a Einlauffadenfühler and / or a Auslauffadenfühler.

In one embodiment of an assembly, a housing element is a bottom or bottom part, and an additional element is designed as a cover element. Possibly. Another additional element is designed as a partition. In an alternative, the assembly forms an interior. In an alternative of an assembly in which a housing element and at least one attached to the housing element additional element form an interior, are arranged in the interior suspensions for yarn feeler. In a further alternative, electronics are arranged in the interior, for example an electronic assembly at least with line elements and / or switching elements.

In one embodiment of the invention, the carrier is designed as at least one bearing holder with at least one bearing seat. That the carrier is formed to form the bearing holder as at least one bearing seat. In a further embodiment, the carrier is designed as two bearing holders each having a bearing seat. For this purpose, for example, two opposite walls of the carrier are each formed as a bearing holder, each with a bearing seat.

In an alternative embodiment, at least one storage holder is formed as a separate storage holder attached to the carrier.

In one embodiment, the yarn feeding device is provided with a compensating element. A compensating element is formed, for example, as a Halterquetschelement and disposed between the carrier and the bearing holder.

In one embodiment, the bearing holder is made of plastic.

In one embodiment, the bearing holder has at least one bearing crimping element which is arranged between a bearing seat of the bearing holder and the corresponding roller bearing.

In one embodiment, the bearing holder, at least in the region of at least one bearing seat parallel to the drive shaft extending recesses. The recesses allow a press fit of the corresponding rolling bearing in the bearing seat, wherein the Lagerquetschelement is pressed into the recesses.

The recesses are formed for example by a polygonal inner contour of the bearing seat. In an alternative, the recesses are formed by gaps between webs or ribs on the inner diameter of the bearing seat.

In one embodiment, the bearing holder has at least one bearing seat made by pouring a rolling bearing.

In an alternative of a bearing holder made of plastic portions of the bearing holder made of plastics of different elasticity are produced. In one embodiment, the bearing holder is provided with two bearing seats, wherein the bearing holder has two sections, in each of which one of the bearing seats is arranged.

The bearing holder is locked in an example in a central region in which the two sections meet, on the carrier.

In an alternative, the bearing holder is locked in each of the two sections on the carrier. In an alternative, the bearing holder is fastened in one section to the carrier and is locked in the other section by at least one clamping connection on the carrier.

In one embodiment, the yarn feeding device has an elongated housing whose outer walls are formed by outer walls of the carrier and / or housing elements. The elongated housing is arranged horizontally, for example, with its longitudinal axis. On one side of the housing, the drive shaft extends through the housing. Above the housing, a drive device is arranged on the drive shaft, which comprises, for example, at least one pulley. The bearing holder (s) for supporting the drive shaft are located in the housing. Below the housing at the lower end of the drive shaft, the yarn feed wheel is arranged. In a yarn feeding device with a belt drive two rolling bearings are provided for supporting the drive shaft. In an alternative, the drive means comprises a drive motor, wherein the yarn feeding device to the drive motor arranged on the carrier one or more bearings, e.g. Rolling bearing having.

The longitudinal direction of the extruded profile is perpendicular or parallel to the drive shaft, i. parallel to its axis of rotation, arranged.

In one embodiment, the longitudinal direction of the extruded profile or the extrusion direction of the extruded profile extends parallel to the longitudinal direction of the housing, and thus to the longitudinal direction of the yarn feeding device. That the carrier is formed as a segment of an extruded profile whose cross-sectional planes extend parallel to the drive shaft and perpendicular to the longitudinal direction of the housing of the yarn feeding device. In this case, the carrier forms a lateral surface or a ceiling and / or a bottom and two longitudinal side walls of the housing of the yarn feeding device.

In one example, for example, a round cross-section of the extruded profile, forms a jacket-shaped Au ßenwand the carrier together with two housing elements at the cut surfaces of the carrier forming segment, the housing of the yarn feeding device. In another example, the extruded profile forming the carrier has a U-shaped cross-section. In this case, the carrier is formed so that the bottom of the U form a ceiling of the housing and the legs of the U's two longitudinal side walls of the housing.

In this example, a lower housing member is provided, which forms the bottom and two housing elements are provided, which form the shorter side walls, also called transverse side walls of the housing. In a variant of this example, two abutting housing elements, e.g. a transverse side wall and a bottom, formed as a part.

In an alternative, the carrier forms a ceiling, below the ceiling an intermediate ceiling and two longitudinal side walls.

In one example, where the bearing holder has two sections each with a bearing seat, the bearing holder is secured in one section to the false ceiling and locked in the other section on the longitudinal side walls by clamp connections.

In one example, clamping connections of the bearing holder on the longitudinal side walls of the carrier are formed by projections of the bearing holder tapering towards the ceiling in corresponding recesses of the longitudinal side walls. In one embodiment, the extensions of the bearing holder are trapezoidal.

In one example, clamping connections of the bearing holder on the longitudinal side walls of the carrier are additionally or alternatively formed by the outer contour of the bearing holder on the inner sides of the longitudinal side walls.

In one embodiment, the longitudinal direction of the extruded profile or the extrusion direction of the extruded profile runs perpendicular to the longitudinal direction of the housing and perpendicular to the drive shaft. The carrier is formed from an extruded profile whose cross-sectional planes are parallel to the drive shaft and parallel to the longitudinal direction of the housing. The carrier forms a blanket, a bottom and two transverse sides of a housing of the yarn feeding device. At least the longitudinal side walls of the housing are formed by housing elements which cover the cut surfaces of the carrier forming the segment. In a variant of this example, housing elements also cover outer walls of the carrier.

In a further embodiment, the longitudinal direction of the extruded profile or the extrusion direction of the extruded profile runs perpendicular to the longitudinal direction of the housing and parallel to the drive shaft. The carrier is formed from a segment of a strand profile, whose cross-sectional planes are perpendicular to the drive shaft. The carrier forms both longitudinal side walls and both transverse side walls of a housing of the yarn feeding device. At least the top and the bottom of the housing are formed by housing elements covering the cut surfaces of the segment forming the carrier.

In one embodiment, the yarn feeding device on an inlet sensor and an outlet sensor, each having at least one about a perpendicular to the drive shaft arranged pivot axis rotatable lever arm, wherein, in the direction of the yarn path, the pivot axis of the inlet sensor is disposed behind the pivot axis of the outlet sensor.

In one embodiment, the carrier has a fastening portion, on which the yarn feeding device can be fastened to a machine part of the textile machine. The attachment portion is disposed on the drive shaft opposite side of the housing. The support made of an extruded profile readily allows the formation of a mounting portion without reinforcements or additional measures are necessary. This is especially true when the extruded profile forming the carrier is made of a metal.

The invention will be further explained with reference to embodiments shown schematically in the drawing. Show it:

Figure 1 is a side view of a first example of a yarn feeding device according to the invention;

Figure 2 is the side view of Figure 1, wherein a partial section through a vertical section through the drive shaft and the housing is shown in the longitudinal direction;

Figure 3 is a transverse view of the first example, with a fragmentary vertical section A-A, indicated in Figure 2, being shown by the drive shaft in the transverse direction;

Figure 4 is a side view of a second example of a yarn feeding device according to the invention;

FIG. 5 shows the side view of FIG. 4, with a partial section showing a vertical section in the region of a lock of a bearing holder;

Figure 6 is the side view of Figure 4, wherein a partial section through a vertical section through the drive shaft and the housing is shown in the longitudinal direction; Figure 7 is a transverse view of the second example, with a partial vertical section AA, which is shown in Figure 5, is shown by the drive shaft in the transverse direction;

Figure 8 is a transverse view of the second example, with a partial vertical section B-B, which is indicated in Figure 6, is represented by the locking of the bearing holder in the transverse direction;

Figure 9 is a perspective view of a carrier of the second example;

Figure 10 is a perspective view of a bearing holder of the second example;

Figure 1 1 is an exploded view of an alternative of the second example, in which the inlet side of the yarn feeding device is shown on the left side;

Figure 12 is a side view of a third example of a yarn feeding device according to the invention;

Figure 13 is the side view of Figure 12, wherein a partial sectional view of a vertical section through the drive shaft is shown in the longitudinal direction;

Figure 14 is a view of the third example from the inlet side, wherein a partial section through a vertical section through the drive shaft in the transverse direction is shown;

Figure 15 is a perspective view of a carrier of a fourth example; and

Figure 16 is a transverse view of the fourth example, wherein a partial sectional view of a vertical section through the drive shaft in the transverse direction is shown.

First example

Figures 1 to 3 show an inventive yarn feeding device 1 of a first example, which is used for feeding a yarn 2 to a textile machine, in particular a circular knitting machine. The yarn feeding device 1 has a yarn feed wheel 3 and a drive shaft 4. The yarn feed wheel 3 is attached to the textile machine such that the drive shaft 4, i. its axis of rotation, runs vertically. The yarn feed wheel 3 is arranged on the drive shaft 4.

The yarn feeding device 1 comprises a carrier 5 for supporting the drive shaft 4 and for fastening the yarn feeding device 1 to the textile machine. The yarn feed wheel 3 is attached to the lower end of the drive shaft 4 with a screw S.

At the upper end of the drive shaft 4 at least one, preferably a plurality of pulleys 6, 7 are provided. Between the pulleys 6, 7 there is at least one clutch disc 8 or other coupling means. The pulleys 6, 7 are rotatably mounted on the drive shaft 4 and rotatably coupled via the clutch disc 8 or the other coupling means, if necessary, with the drive shaft 4.

The yarn feeding device 1 has on one side and in the inlet region of the thread 2, in FIGS. 1 and 2 on the right side, thread guiding elements namely an inlet eye 9, a thread brake 10, a knot catcher 11, an inlet sensor 12 and a further thread eye 13 , the thread 2, as shown in Figure 1, in this order before the yarn feed wheel 3 passes. In the outlet area, the yarn feeding device 1 in the yarn path after the yarn feed wheel 3 more yarn guide elements, namely successively a first outlet eye 14, a second outlet eye 15 and a discharge sensor 16. The yarn feeding device 1 is provided with a signaling device 17 and with a fastening device 18, to which the yarn feeding device 1 on a machine part of the knitting machine, in particular on a machine ring 19 a circular knitting machine, can be fastened.

The carrier 5 of the yarn feeding device 1 is formed from a segment of an extruded profile.

The carrier 5 forms at least one outer wall of the housing of the yarn feeding device. 1 The yarn feeding device 1 has housing elements 20, 21, which are fastened to the carrier 5 and form outer walls of the housing.

In this example, the carrier 5 is formed as a segment of an extruded profile whose cross-sectional planes extend parallel to the drive shaft 4 and perpendicular to the longitudinal direction of an elongated housing of the yarn feeding device 1. The carrier 5 forms a ceiling and two longitudinal side walls. In Figures 1 and 2, the extrusion direction of the extruded profile extends in the horizontal direction, wherein the carrier 5 formed from a segment of the extruded profile with the housing elements 20, 21 forms an elongated, cuboid housing of the yarn feeding device 1.

The shape of the cross-section of the extruded profile corresponds approximately to a rotated by 180 ° U, the bottom of the U's a ceiling and the two legs of the U's two Form longitudinal side walls of the housing. The carrier 5 thus forms the outer walls of the housing designed as a cover and as longitudinal side walls of the housing.

The first housing element 20 forms a bottom and a front transverse side wall on the inlet side of the yarn feeding device 1, and the second housing element 21 forms a rear transverse side wall of the housing of the yarn feeding device 1 opposite the front transverse side wall. That the housing of the yarn feeding device 1 is formed from the outer walls of the carrier 5 and the housing elements 20, 21. The segment of the extruded profile and thus the carrier 5 can also be referred to as a chassis of the yarn feeding device 1.

In this example, the longitudinal side walls of the carrier 5 in the lower region are slightly curved inwards, so that the cross section of the housing in approximately the shape of a large omega "Ω" (Figure 3).

The extruded profile is made of aluminum. At least the outer surfaces of the extruded profile forming the cover and the longitudinal side walls of the housing are made of anodized aluminum. For this purpose, the strand of an extruded profile is made anodized as a whole. The cut surfaces of the segment 5 forming the carrier are covered by the housing elements 20, 21.

The yarn feed wheel 3 is disposed below the housing, below the first housing element 20.

The yarn feeding device 1 is provided with additional elements. At the bottom forming portion of the first housing member 20, a first additional element is arranged, which is designed as a thread supply wheel 3 covering, bell-shaped wheel cover R. The first additional element is molded to the first housing member 20, i. the first additional element and the first housing element 20 are formed as one part.

In the housing formed by the carrier 5 and the housing elements 20, 21, the drive shaft 4 is mounted. In this case, the drive shaft 4 extends in the half of the inlet side vertically through the housing. The fastening device 18 and the signaling device 17 are located on the opposite side of the drive shaft 4 outlet side, in Figures 1 and 2 on the left side. In this case, the signaling device 17 is arranged between the yarn feed wheel 3 and the fastening device 18.

For storage of the drive shaft 4, a separate bearing holder 22 is attached to the carrier 5. The bearing holder 22 has two undivided bearing seats 23, 24, namely a lower one Bearing seat 23 in a lower portion of the bearing holder 22 and an upper bearing seat 24 in an upper portion. In the lower bearing seat 23, a lower roller bearing 25 and in the upper bearing seat 24, an upper roller bearing 26 is arranged.

On the drive shaft 4, three hollow cylinders H1, H2, H3 are arranged, wherein the first hollow cylinder H1 between a not shown bearing seat of the lower pulley 7 and the upper bearing seat 24, the second hollow cylinder H2 between the two bearing seats 23 and 24 and the third hollow cylinder H3 between the lower bearing seat 23 and the yarn feed wheel 3 extend.

The yarn feeding device 1 has at least one elastic compensating element, which is designed as a holder crimping element 27 and is arranged between the bearing holder 22 and the carrier 5.

Between the upper roller bearing 26 and the upper bearing seat 24 of the bearing holder 22, a bearing crimping element 28 is additionally arranged.

The bearing holder 22 is formed of plastic. The lower bearing seat 23 of the bearing holder 22 is formed by pouring the lower rolling bearing 25.

The bearing holder 22 is locked at two locations, in its upper portion with the upper bearing seat 24 and in its lower portion with the lower bearing seat 23 on the carrier 5. In particular, the bearing holder 22 is fixed in its upper portion to the carrier 5, for example by screws and locked in its lower portion by clamping connections to the carrier 5.

The bearing holder 22 has a cylindrical body in which the two bearing seats 23, 24 are formed and whose, in the figures 2 and 3 upwardly facing, end face is flat. The Halterquetschelement 27 is also formed, at least partially, as a cylindrical body which, if necessary, with tension, on the cylinder body of the bearing holder 22 can be placed. An upper end face of the Halterquetschelementes 27 is aligned in the assembled state with the bearing holder 22. In the ceiling of the housing forming Au ßenwand of the carrier 5 is inside a circular recess 29 is provided, in which the Halterquetschelementes 27 and the bearing holder 22 protrude with their faces and on the inner surface they rest.

The bearing holder 22 and the Halterquetschelement 27 are individually or jointly, for example by screws, attached to the ceiling or to the false ceiling of the carrier 5. The bearing holder 22 is provided in its lower portion in the figures with two oppositely arranged tabs 30 having an eg semicircular cross-section. The Halterquetschelement 27 has the tabs 30 corresponding to the tabs 30 at least partially enclosing extensions 31. The tabs 30 and the enveloping extensions 31 protrude into corresponding side recesses 32 in the legs of the carrier 5, which form the longitudinal side walls of the housing. The tabs 30 and the enveloping extensions 31 form with the side recesses clamping connections, by which the bearing holder 22 is locked in its lower portion on the carrier 5.

The arrangement of the end faces of the bearing holder 22 and the Halterquetschelements 27 in the upper circular recess 29 allows an upper locking and an upper adjustment of the bearing holder 22 with respect to the carrier 5. The arrangement of the tabs 30 and extensions 31 in the lower side recesses 32 allow one of the lower Locking and a lower adjustment. The holder crimping element 27 bridges possibly occurring production tolerances between the continuous casting profile of the carrier 5 and the bearing holder 22 made of plastic, in particular as an injection molded part.

The bearing holder 22 is formed in this example as a part, as a one-piece injection molded part, together with a second additional element. This second additional element is designed as a cover 33. It forms, together with the first housing element 20, an interior space for accommodating an electronic assembly 34 as well as switching elements 35 and suspensions 36 for the inlet sensor 12 and the outlet sensor 14. The cover element 33 has the shape of a bottomless cuboid, the bottom passing through the first housing element 20 is formed. In a not shown on the machine ring 19 guided cable open two connected to the electrical assembly 34 pins 37th

The fastening device 18 is formed by in the outlet region of the yarn feeding device 1, aligned openings 38 in the legs of the carrier 5. It has a threaded plate 39 extending between the legs and a screw 40.

The extruded profile of the carrier 5 has an intermediate ceiling 41, which extends below the outer wall forming the ceiling of the housing. This false ceiling 41 gives the yarn feeding device 1 a higher stability.

The arranged in the inlet region Fadenleitelemente 9, 10, 1 1, 12, 13 are arranged on a holder 42 which is secured by screws 43 on the housing of the yarn feeding device (Figure 1). In an alternative, the extruded profile of the carrier 5 is formed without this false ceiling.

In an alternative, the bearing holder has at least two regions made of plastics of different elasticity. For example, the alternative bearing holder is formed as a part that includes the functions of the bearing holder 22, the holder crimping member 27, and the bearing crimping member 28. In this case, a cylindrical inner first region made of a hard plastic, which has the shape of the bearing holder 22, an externa ßerer, second region of a softer plastic greater elasticity in the form of Halterquetschelementes 27 is formed. In the region corresponding to the upper bearing seat 24 of the bearing holder 22, an inner, third region made of a plastic of an elasticity between that of the first and the second region, possibly in the form of Lagerquetschelements 28 is optionally formed. The area corresponding to the lower bearing seat 23 is optionally formed as in Example 1 by pouring the lower roller bearing 25. The plastic of the third region may also be that of the first region.

The thread path of the yarn feeding device 1, which is attached to the machine ring 19 of a circular knitting machine, extends from the outside Shen from the coils inwardly to the fabric; in the side views from right to left.

Second example

An inventive yarn feeding device 50 of a second example is shown in Figures 4 to 10. The yarn feeding apparatus 50 of the second example is the same as that of the first example except for the differences explained in the following description. Corresponding elements are provided with the same reference numerals.

The carrier 51 of the yarn feeding device 50 of the second example is also i. as the carrier 5 of the first example as a segment of a strand profile, namely an extruded aluminum. Likewise, the cross-sectional planes of the segment of the extruded profile run parallel to the drive shaft 4 and the longitudinal direction of the extruded profile extends in the direction of the thread pattern of the yarn feeding device 50.

The carrier 51 forms outer walls, also a ceiling D and two longitudinal side walls L1 and L2, a housing of the yarn feeding device 50 (Figure 9). In a Alternatively, the Au ßenflächen the carrier 51 are provided with an applied by anodization layer.

The shape of the cross section of the extruded profile and thus of the carrier 51 corresponds to that of the carrier 5 of the first example. The extruded profile of the carrier 51 also has an intermediate ceiling 52.

In contrast to that of the first example, the yarn feeding device 50 has three housing elements 53, 54, 55, wherein the first housing element 53 forms a front transverse side wall, the second housing element 54 forms a bottom and the third housing element 55 forms a rear transverse side wall opposite the front transverse side wall. That the housing of the yarn feeding device 50 is formed from the outer walls of the carrier 51 and the housing elements 53, 54, 55. The housing elements 53, 54, 55 are made of plastic.

The yarn feeding device 50 is provided with additional elements (Figure 6).

A first additional element is, similar to the first example, formed as a wheel cover R, which covers the yarn feed wheel 3 from above bell-shaped. The wheel cover R and the second housing member 54 are formed as a part, wherein the wheel cover R is integrally formed on the underside of the housing member 54.

A second additional element is formed as an intermediate wall Z, which closes the interior of the housing to the region of the fastening device 18 with the openings 38. The intermediate wall Z and the second housing element 54 are formed as one part, wherein the intermediate wall Z is integrally formed on the upper side of the housing element 54.

The housing member 54, the wheel cover R and the intermediate wall Z are made in one example as an injection molded part made of plastic.

A third auxiliary element is formed as a separate cover element 56, which is fastened to the second housing element 53. For fastening, for example, screws, which are not visible in the drawing, are provided. The cover 56 forms a seated on the housing member 53 and subsequent to the intermediate wall Z hood, between the housing member 53 and cover 56, an interior is formed. In this interior, for example, an electronic assembly 34 and switching elements 35 and suspensions 36 for an inlet sensor 57 and an outlet sensor 58 are arranged. The yarn course of the yarn feeding device 50 shown in Figure 2 corresponds to that of the second example except for the arrangement of the suspensions 36 for the inlet sensor 57 and the outlet sensor 58. The inlet sensor 57 and the outlet sensor 58, as those of the first example, mounted in the suspensions 36 Lever arms which are each rotatable about a pivot axis arranged perpendicular to the axis of rotation. In contrast to the first example, the suspension 35, and thus the pivot axis, of the inlet sensor 57 in the thread running direction behind the outlet sensor 58 is arranged. By this arrangement, the remaining space in the housing next to the bearing holder 59 can be optimally used and provided sufficiently long lever arms for the sensor.

For storage of the drive shaft 4, a separate bearing holder 59 made of plastic is attached to the carrier 51. The bearing holder 59 has two sections, each with an undivided bearing seat 60, 61. In each bearing seat 60, 61, a rolling bearing 62, 63 and between the bearing seat and the rolling bearing 62, 63, a bearing crimping element 64, 65 are arranged. As shown in Fig. 10, the bearing holder 59 has a cylindrical body in which the bearing seats 60, 61 are formed. The bearing holder 59 is provided with a cylindrical opening, wherein the bearing seats 60, 61 are each formed by a stepped constriction of the opening. The bearing holder 59 thereby has in its central region a smaller inner diameter than in the two externa ßeren areas, namely the lower in the figures with the lower bearing seat 60, the Lagerquetschelement 64 and the roller bearing 62 and the upper portion with the upper Bearing seat 61, the Lagerquetschelement 65 and the rolling bearing 63 (Figure 6).

In the area of the bearing seats, the bearing holder is provided with webs N which run parallel to the drive shaft 4 (FIG. 10).

The bearing holder 59 is locked in its upper portion and in its lower portion on the carrier 51.

For upper locking, the bearing holder 59 in the upper portion of two molded sleeve holder with two screw sleeves 66, the end surfaces 67 lie in a plane which is disposed below the end face of the cylindrical body of the bearing holder 59. One of the sleeve holders is arranged in the front region of the bearing holder 59 and the other in the rear region.

The carrier 51 is provided in the region of the bearing holder 59 with an opening 68 through which the cylindrical body of the bearing holder 59 projects. The false ceiling 52 of the carrier 51 is provided with recesses, which lie in a plane bearing surfaces 69 for the Form end surfaces 67 of the screw sleeves 66. In the center of each of the bearing surfaces 69, a threaded hole 70 begins in the false ceiling 52. The bearing holder 59 is fixed to the carrier 51 by screws 71, which project through the screw sleeves 66 of the bearing holder 59 in the threaded holes 70 of the false ceiling 52 of the carrier 51. The position of the bearing holder 59 is adjusted by the end faces 67 and the bearing surfaces 69.

For the lower locking of the bearing holder 59 has two molded, protruding from the bearing holder clamping elements 72 which are arranged on opposite sides in the region of the longitudinal side walls of the carrier 51.

The clamping members 72 of the one, lower portion taper towards the other, upper portion of the bearing holder 59, i. the clamping elements taper upwards. They are designed as projecting trapezoids whose shorter parallel sides are arranged at the top.

The longitudinal side walls of the carrier 51 have the clamping elements 72 corresponding recesses 73. The recesses 73 taper upwards. They are trapezoidal.

The clamp connection is automatically generated when mounting the bearing holder 59 on the false ceiling 52. She adjusts the storekeeper in the lower section. The clamping connection prevents twisting or tilting of the bearing holder, in particular in the longitudinal direction of the yarn feeding device 50.

The bearing holder 59 is locked by a further clamping connection to the carrier 51. The clamping connection is formed by in the region of the longitudinal side walls of the carrier 51 projecting wall portions 74 of its cylindrical body, which rest under tension on the inner sides of the longitudinal side walls of the carrier 51. In an alternative embodiment, the bearing holder 59 is formed without projecting wall portions 74.

Two further smaller additional elements are designed as cover parts 75 for the clamping element 72 and molded on the second housing element 54. The cover members 75 extend tab-like over the clamping elements 72. They each have in their upper part a step 76, which forms a stop for a bracket of the inlet sensor 57 respectively.

These additional elements are also formed on the housing element 20 of the first example and form a stop for the inlet sensor 12 (Figure 1). The second housing member 54 is fixed thereto by front and rear screws 77 which project into threaded holes 77a of the bearing holder 59 and fixed to the bracket 51 by a screw 78 in the intermediate wall Z projecting into a threaded hole 79 of the bracket 51.

A yarn feeding device 50 'of an alternative of the second example is shown in the exploded view of Figure 1 1. The inlet side of the yarn feeding device 50 'is shown on the left side of Figure 11. The yarn feeding device 50 'corresponds to the yarn feeding device 50 except for differences explained in the following description. Corresponding elements are provided with the same reference numerals.

The exploded view shows the drive shaft 4 of the yarn feeding device 50 ', at the upper end of two pulleys 6, 7 are provided. Between the pulleys 6, 7 is a clutch disc 9. Compared to the yarn feeding device 50, the yarn feeding device 50 'in addition to a cover A above the upper clutch disc 6.

The drive shaft 4 extends vertically through the carrier 51. At the lower end of the drive shaft 4, a yarn feed wheel 3 'with a screw S and a disc S is attached. The yarn feed wheel 3 'has, in contrast to the yarn feed wheel 3 of the yarn feeding device 50 on a rod cage.

Figure 1 1 shows the hollow cylinder H1, the bearing holder 59 and the hollow cylinder H3, which are arranged on the drive shaft 4.

In the inlet region, the inlet eye 9, the knot catcher 1 1, the yarn brake 10 and the thread eye 13 are arranged on the holder 42. In contrast to the yarn feeding device 50, the knot catcher 1 1 is arranged in the yarn path in front of the yarn brake 10. He is attached by an additional screw 1 1 'on the holder 42.

The holder 42 is fastened by two screws 43 on the housing of the yarn feeding device 50 '. A screw 43 simultaneously fastens the thread brake 10 on the holder 42nd

The bearing holder 59 is fixed to the bracket 51 by four screws 71.

In particular, the holder 42 is attached to the bearing holder 59 and with this on the carrier 51. The upper screw 43 is connected to an element St, a nut, and the lower screw to the bearing holder 59 itself.

The yarn feeding device 50 ', like the yarn feeding device 50, has three housing elements 53', 54 ', and 55'. The first housing element 53 'forms a front transverse side wall and a subsequent bottom part of the housing of the yarn feeding device 50'. The second housing element 54 'forms a further, larger bottom part of the housing. The third housing element 55 'forms a rear, the front transverse side wall opposite transverse side wall. The third housing element 55 'is located in the region of the fastening device 18. A U-shaped threaded plate 39' is set in the opening 38 against the housing element 55 'and connected by a clamping connection with the housing element 55'.

The housing element 54 'is made with the two additional elements wheel cover R and partition Z' as a part, namely as an injection molded part made of plastic.

The third additional element, namely the separate cover element 56 ', is fastened to the housing element 54'. In this alternative, the cover 56 'is connected to the housing member 54' by clamping connections.

The housing element 54 'with the intermediate wall Z' forms an interior together with the cover element 56 '.

In addition, the housing element 54 'with the two additional elements and the cover 56' form an assembly.

The assembly also includes the inlet sensor 57 and the outlet sensor 58.

In the interior of the assembly are e.g. the electronics assembly 34 e.g. arranged with line elements and switching elements 35 and the suspensions for the inlet sensor 57 and the outlet sensor 58.

The assembly is attached to the carrier 51.

In this example, the assembly is secured together with the signaling device 17 via the screw 78 on the carrier 51. The assembly is also secured to the bearing support 59 with screws 77 and secured to the support 51 via the bearing support 57.

Assemblies can be prefabricated at various locations and delivered to final assembly to a different location. In particular, sensitive components can be prefabricated in assemblies with an interior and sent securely. The prefabricated assembly can be shipped for final assembly. Third example

An inventive yarn feeding device 80 of a third example is shown in Figures 12 to 14. The yarn feeding apparatus 80 of the third example is the same as that of the first example except for the following differences. Corresponding elements are identified by the same reference numerals.

In FIGS. 12 to 14, the yarn feeding device 80 is shown without a thread, with the inlet sensor 81 and the outlet sensor 82 being in rest positions. The knot catcher 1 1 is arranged in the thread path in front of the brake 10. The outlet sensor 82 is arranged in the thread path between the first outlet eye 14 and the second outlet eye 15.

The carrier 83 is formed as a segment of an extruded aluminum profile.

In the third example, the extrusion direction of the extruded profile extends in the horizontal direction perpendicular to the drive shaft 4 and, unlike the first example, perpendicular to the planes in which the thread is guided in the inlet region and in the outlet region by the thread guide elements, i. perpendicular to the thread path to the textile machine. The extrusion direction of the extruded profile of the carrier 83 extends perpendicular to that of the first and second examples.

Housing elements of the yarn feeding device 80 of the third example are formed as a cover 84 and a cover 85. The cross section of the extruded profile, from the segments of which the carrier 83 of the third example is made, has substantially the shape of a "P" rotated by 90 ° in the clockwise direction. That the support shown in Figure 13 has a horizontal beam portion on the right side in Figure 13, a frame portion is formed, which has an approximately square cross-section.

In alternatives, the cross section is rectangular, oval or round.

In an externa ßeren, rear fastening part B of the beam portion, ie in Figures 12 and 13 on the left side, the carrier 83 has a running in the longitudinal direction of the extruded profile recess which forms the opening 38 for the fastening device 18. In the region of the recess, a threaded plate 39 is arranged with the fastening screw 40. The cover element 84 designed as a housing element has a ceiling, two longitudinal side walls and a front transverse side wall. The cover 84 extends in the horizontal direction until the attachment part of the beam portion. The cover 84 covers outer surfaces of the carrier 83, namely up to the attachment part B, an upper side of the beam section with its ceiling, the front transverse side wall with its transverse side wall and the cut surfaces of the carrier 83 on the longitudinal sides with their longitudinal side walls. The fastening part B of the carrier 83 projects out of the cover 84.

A housing of the yarn feeding device 80 is formed by the carrier 83, the Au ßenwände are covered by the cover 84, the cover 84 and the cover plate 85 formed with the intermediate wall Z.

A separate additional element is designed as a wheel cover R for the yarn feed wheel 3 and attached to the carrier 83. The cover bottom 85 with the intermediate wall Z and the cover 84 are each formed as one-piece injection molded plastic parts.

The drive shaft 4 is arranged in the frame portion of the carrier 83, in which it is supported by means of a bearing holder 86.

The separate bearing holder 86 has a lower and an upper portion each with a bearing seat 87, 88, in each of which a roller bearing 89, 90 is arranged. The bearing holder 86 is formed of plastic. The lower bearing seat 87 is formed by pouring the rolling bearing 89. A bearing crimping member 91 is disposed between the upper bearing seat 88 and the upper roller bearing 90.

The bearing holder 86 is locked in the upper portion and in the lower portion of the carrier. For this purpose, the bearing holder 86 in the upper and in the lower portion projections 92 which protrude into corresponding recesses 93 of the frame portion of the carrier 83. The projections 92 and the recesses 93 extend parallel to the longitudinal direction of the extruded profile, so that the bearing holder 83 can be inserted in this direction in the frame of the frame part. In this position, the bearing retainer 86 is provided with upper and lower locking means 94, e.g. Clamping bolts and / or screws in both sections locked to the carrier 83.

FIG. 13 shows, by way of example, screws 95, by which a holder 96 and the covering hood 84 are fastened to the carrier 83 on the front transverse side. On the holder 96, the inlet eye 9 and the thread eye 13 are formed and the knot catcher 1 1 and the thread brake 10 is attached. Fourth example

An inventive yarn feeding device of a fourth example will be explained below with the aid of a representation of its carrier 100, Figure 15, and a vertical section through the drive shaft 4 in the transverse direction, Figure 16. The yarn feeder is the same as in the first example except for the following differences. Corresponding elements are identified by the same reference numerals.

The carrier 100 is also formed as a segment of an extruded aluminum profile. The extrusion direction of the extruded profile runs parallel to the drive shaft 4 and thus perpendicular to the longitudinal direction of the housing of the yarn feeding device, which corresponds to the running direction of the yarn to the textile machine. The cross-section of the extruded profile is in the form of an elongate, internally open oval having at one end an annular surface and at a distance from the annular surface at the other end a filled portion. A segment of the extruded profile, and thus the support 100, is thereby formed in its front portion as a cylinder Y for supporting the drive shaft 4 and in its rear portion of solid material in which the opening 38 is provided for the fastening device 18, e.g. is milled out. In its central portion between the front and rear portions of the carrier 100 defines a housing interior.

In particular, the carrier 100 Au outer walls of the housing of the yarn feeding device, namely the two longitudinal side walls and the front and rear transverse side wall. In the figures 15, 16 housing elements not shown form a cover and a bottom of the housing of the yarn feeding device.

In this example, two storage holders are formed in the carrier 100. That the carrier 100 forms the storekeeper itself.

In the front portion of the carrier 100, a lower bearing seat 101 is formed in a lower portion of the cylinder Y, and an upper bearing seat 102 is formed in an upper portion, respectively, as a stepped extension of the cylinder Y downward and upward. In the bearing seats 101, 102 each have a rolling bearing 103, 104 are arranged. Between the rolling bearings 103, 104 and the respective bearing seats 101, 102 Lagerquetschelemente not shown are provided. reference numeral

1 thread feeding device

2 threads

3 thread feed wheel

4 drive shaft

5 carriers

6 pulley

7 pulley

8 clutch disc

9 inlet eyelet

10 thread brake

1 1 node catcher

12 inlet sensor

13 thread eyelet

14 first outlet eyelet

15 second outlet eyelet

16 outlet sensor

17 signaling device

18 fastening device

19 machine ring

20 first housing element (bottom and front cross member)

21 second housing element (rear cross element)

22 storekeeper

23 Lower bearing seat

24 Upper position

25 Bottom roller bearing

26 Upper roller bearing

27 Halterquetschelement

28 bearing crimping element

29 recess in the carrier

30 tab on the storage holder

31 extension on Halterquetschelement

32 side recess on the carrier

33 cover element (separate additional element) 34 electronic module

35 switching element

36 suspension

37 contact pin

38 opening

39 threaded plate

40 fixing screw

41 false ceiling

42 holders

43 screw

50 yarn feeding device

51 carriers

52 false ceiling

53 first housing element 54 second housing element

55 third housing element

56 cover element

57 inlet sensor

58 outlet sensor

59 storekeeper

60 bearing seat

61 bearing seat

62 rolling bearings

63 rolls

64 bearing crimping element

65 bearing crimping element

66 screw sleeve

67 face

68 opening

69 bearing surface

70 threaded hole

71 screw

72 clamping element

73 recess

74 wall part 75 cover part

76 level

77 screw

77a threaded hole

78 screw

79 tapped hole

3 'thread feed wheel

1 1 'screw

50 'yarn feeder

53 'first housing element (front transverse side wall) 54' second housing element (bottom element) 55 'third housing element (rear transverse side wall) 56' cover element (additional element)

80 yarn feeding device

81 inlet sensor

82 outlet sensor

83 carriers

84 first housing element

85 second housing element

86 storekeeper

87 bearing seat

88 bearing seat

89 rolling bearings

90 rolling bearings

91 bearing crimping element

92 extension

93 recess

94 locking means

95 screw

96 holders

100 carriers, storekeeper

101 bearing seat

102 bearing seat

103 rolling bearings

104 rolling bearings S screw

H1 upper hollow cylinder

H2 medium hollow cylinder

H3 lower hollow cylinder

D blanket

L1 longitudinal side wall

L2 longitudinal side wall

R wheel cover (additional element)

Z intermediate wall (additional element)

N footbridge

A cover

Z 'intermediate wall (additional element)

St element

Y cylinder

Claims

Patent claims

1 . Thread delivery device (1, 50, 50', 80) for feeding a thread to a textile machine with a thread delivery wheel (3),

with a drive shaft (4) on which the thread delivery wheel (3) is arranged, with a carrier (5, 51, 83, 100) with at least one bearing holder (22, 59, 86) with at least one undivided bearing seat (23, 24; 60, 61; 87, 88; 101, 102) each for receiving a rolling bearing (25, 26) and with at least one rolling bearing (25, 26; 62, 63; 89, 90; 103, 104) for supporting the drive shaft (4 ), characterized in that the carrier (5, 51, 83, 100) is designed as at least one segment of an extruded profile.

2. Thread delivery device (1, 50, 50 ', 80) according to claim 1, characterized in that the carrier (5, 51, 83, 100) is designed as at least one segment of an extruded aluminum profile.

3. Thread delivery device (1, 50, 50') according to claim 1 or 2, characterized in that the carrier (5, 51, 100) forms at least one outer wall of a housing of the thread delivery device (1, 50).

4. Thread delivery device (1, 50, 50', 80) according to one of claims 1 to 3, characterized by at least one housing element (20, 21; 53, 54, 55; 53', 54' 55'; 84, 85), which is attached to the carrier (5) and forms an outer wall of the housing of the thread delivery device (1, 50, 80).

5. Thread delivery device (1, 50, 50 ', 80) according to claim 4, characterized by at least one additional element which is arranged on the carrier (5) or on a housing element (20) or on a bearing holder (22).

6. Thread delivery device (1, 50, 50, 80) according to claim 5, characterized in that a housing element (20) and with at least one further housing part and / or with at least one additional element is formed as a part.

7. Thread delivery device (1, 50, 50', 80) according to claim 5, characterized in that a housing element (20, 54, 54', 85) and at least one separate additional element attached to the housing element form an interior.

8. Thread delivery device (1, 50, 50', 80) according to one of claims 5 to 7, characterized in that a housing element (20, 54, 54', 85) and at least one on the housing element (20, 54, 54' 85) attached separate additional element forms an assembly

9. Thread delivery device (1, 50, 50 ', 80) according to one of claims 1 to 8, characterized in that at least one bearing holder is formed in the carrier (100).

10. Thread delivery device (1, 50, 50', 80) according to one of claims 1 to 9, characterized in that at least one bearing holder is designed as a separate bearing holder (22, 59, 86) which is attached to the carrier (5, 51 , 83) is attached.

1 1 . Thread delivery device (1, 50, 50', 80) according to claim 10, characterized by at least one compensating element designed as a holder clamping element (27) which is arranged between the carrier (5) and a bearing holder (22).

12. Thread delivery device (1, 50, 50 ', 80) according to claim 10 or 1 1, characterized in that at least one bearing holder (22, 59, 86) is made of plastic.

13. Thread delivery device (1, 50, 50 ', 80) according to one of claims 10 to 12, characterized in that the bearing holder (22, 59, 86, 100) at least in the area of at least one bearing seat (23, 24; 60, 61 ; 87, 88; 101, 102) has recesses running parallel to the drive shaft (4).

14. Thread delivery device (1, 50, 50 ', 80) according to claim 12, characterized in that the bearing holder (22) has at least one bearing seat (23, 87) which is produced by casting a rolling bearing (25, 89).

15. Thread delivery device (1, 50, 50 ', 80) according to one of claims 10 to 14, characterized in that the bearing holder (22, 59, 86) is made of plastic and has at least two areas made of different plastics

Elasticity is produced.

16. Thread delivery device (1, 50, 50', 80) according to one of claims 10 to 15, characterized in that the bearing holder (22, 59, 86, 100) has two sections, each with a bearing seat (23, 24; 60, 61 ; 87, 88; 101, 102).

17. Thread delivery device (1, 50, 50 ', 80) according to claim 16, characterized in that the bearing holder (22, 59, 86) is locked in each section on the carrier (5).

18. Thread delivery device (1, 50, 50 ', 80) according to claim 17, characterized in that the bearing holder (22, 59) is attached to the carrier (5) in one section and to the carrier in the other section by at least one clamp connection (5, 51) is locked.

19. Thread delivery device (1, 50, 50') according to one of claims 1 to 18, characterized in that the carrier (5, 51) is formed from a segment of an extruded profile, the cross-sectional planes of which are parallel to the drive shaft (4) perpendicular to the longitudinal direction of the Thread delivery device (1, 50), the carrier (5, 51) forming a ceiling and / or a floor and two longitudinal side walls of a housing of the thread delivery device (1, 50).

20. Thread delivery device (1) according to claim 19, characterized in that the carrier (5, 51) forms a ceiling, below the ceiling an intermediate ceiling (42, 52) and two longitudinal side walls of the housing of the thread delivery device (1).

21. Thread delivery device (1) according to claim 20, characterized in that the bearing holder (22, 59) has two sections, each with a bearing seat (23, 24, 60, 61) and is fastened in one section to the false ceiling (41, 52) and in the other section is locked on the long side walls by clamp connections.

22. Thread delivery device (80) according to one of claims 1 to 18, characterized in that the carrier (83) is formed from an extruded profile, the cross-sectional planes of which run parallel to the drive shaft (4) and parallel to the longitudinal direction of the thread delivery device (80), the Carrier (83) forms a ceiling, a floor and two transverse side walls of a housing of the thread delivery device (80).

23. Thread delivery device according to one of claims 1 to 18, characterized in that the carrier (100) is formed from an extruded profile, the cross-sectional planes of which run perpendicular to the drive shaft (4), the carrier (100) having two longitudinal side walls and two transverse side walls of a housing Thread delivery device forms.