EP3137660A2

EP3137660A2 - Circular comb and circular comb units which comprise a circular comb secured to a shaft

Info

Publication number: EP3137660A2
Application number: EP15720083.3A
Authority: EP
Inventors: Friedrich Henninger
Original assignee: Staedtler and Uhl KG
Current assignee: Staedtler and Uhl KG
Priority date: 2014-05-02
Filing date: 2015-04-30
Publication date: 2017-03-08
Anticipated expiration: 2035-04-30
Also published as: EP3680371B1; EP3680371A1; WO2015166085A3; WO2015166085A2; EP3137660B1

Abstract

The invention relates to a circular comb (2) which is intended for use in a combing machine for combing textile fibres, and which is to be secured to a combing machine shaft (5) that can rotate about a rotational axis (4). It comprises a circular comb main part (6) that has an outer circumferential side (7) and an inner circumferential side (8), and a plurality of combing bars (9) which are arranged on said outer circumferential side (7) of the circular comb main part (6) and the totality of which covers a combing circumferential angle segment and defines a combing region on said circular comb (2). On the outer circumferential side (7) of the circular comb main part (6), at least two outer contact strips per combing bar (9) are provided which extend axially in the direction of the rotational axis (4), are tangentially spaced apart from one another relative to said rotational axis (4), and form combing bar contact surfaces on which each of the combing bars (9) lies. On the inner circumferential side (8) of the circular comb main part (6), inner contact strips are provided which extend axially in the direction of the rotational axis (4), protrude radially inwards relative to the rotational axis (4), are tangentially spaced apart from one another relative to said rotational axis (4) and form, at least within the combing region, the individual shaft assembly contact surfaces of said circular comb main part (6) for the purpose of direct or indirect installation on, or connection to, said shaft (5). At least some of the outer contact strips are associated with one of said inner contact strips respectively such that together these form a strip pair, the outer and inner contact strips of each of said strip pairs at least partially overlapping in their tangential extension, and there being at least two strip pairs provided per combing bar (9).

Description

Circular comb and circular comb units with a circular comb attached to a shaft

The present patent application claims the benefit of German Patent Application DE 10 2014 208 300.1, the content of which is incorporated herein by reference.

The invention relates to a circular comb for a combing machine for combing textile fibers and for fastening to a shaft of the combing machine rotatable about a rotational axis. Moreover, the invention relates to circular comb units for a combing machine for combing textile fibers.

Combs for use in combing machines are known, for example, in the form of circular or circular combs through obvious prior use, wherein combing elements are arranged on a circular comb main body, which are in engagement with the tuft of the textile fibers to be combed. A comb provided with combing elements along at least part of its circumference is referred to as a circular comb. The active combing area can be, for example, 78 °, 90 °, 111 ° or 180 ° of the circumference of a generatrix of the circular comb. The combing elements may be, for example, needles, pin strips, sawtooth wire sections, comb teeth or, in particular, sawtooth stampings. Several of these combing elements are usually preassembled to comb bars, which are sometimes referred to as Kämmsegmente or Kämmgarnur. Thus, such a combing bar can for example have a plurality of axially, ie in the direction of the axis of rotation, successively arranged Sägezahnstanzteile sawtooth wire sections or toothed with toothed discs. In DD 283 847 A5, the attachment of a provided with a plurality of combing combs circular base body on there as a circular comb roller rotatable shaft of a combing machine means

Screw connections described. In order also at higher turning or

Kämmgeschwindigkeiten to achieve a good Kämmqualität, is dispensed with the otherwise usual for attaching the screw connections in the circumferential or direction of rotation front mounting bar.

Furthermore, CH 683 190 A5 describes a radially height-adjustable fastening of a circular comb basic body provided with a plurality of combing bars on a roll or holding body of a comber. The Kjeiskamm base body is held in a continuously adjustable radial distance from the roll or holding body. This radial adjustable holder makes it possible to easily set a desired low radial distance of the tooth tips of Kämmnadeln or bars to a tuft to be combated tuft holding. A slight concave bending of the circular comb resulting from the adjustable support is said to be advantageous. An object of the invention is therefore to provide a circular comb of the type described above with respect to the previously known embodiments improved properties.

To solve this problem, a circular comb according to the features of claim 1 is given. The circular comb according to the invention comprises a Kjeiskamm basic body with an outer peripheral side and an inner peripheral side, a plurality of arranged on the outer peripheral side of the Kjeiskamm base body combing bars, which cover in their entirety a Kämm-Umfangsswinkelsegment and a Kämmbereich of the circular comb, wherein on the outer circumferential side of the circular comb main body per combing bar at least two axially extending in the direction of the axis of rotation and tangentially with respect to the axis of rotation spaced outer contact strips are present, the Kämm- bolt contact surfaces, which abuts the respective combing bolt form, on the inner peripheral side of the Kjeiskamm body axially in the direction of the axis of rotation, radially in relation to the axis of rotation inwardly projecting and tangentially with respect to the axis of rotation spaced inner contact strips are present at least within the combing the only shaft mounting contact surfaces form the Kjeiskamm basic body for direct or indirect abutment or connection to the shaft, wherein at least some of the outer contact strips are each assigned to one of the inner contact strips and form each with this a pair of strips, wherein the outer contact strip and the inner contact strip overlap each of the pairs of strips in their tangential extent at least partially, and wherein each combing bar at least two pairs of strips are present.

The Kjeiskamm main body has in particular substantially the basic shape of a circumferential segment of a hollow cylinder, wherein the cylinder axis of the hollow cylinder is a coincident in particular with the axis of rotation center longitudinal axis of the Kjeiskamm base body.

The location or directional data used here relate in particular to the axis of rotation or a cylindrical coordinate system defined by the axis of rotation. Insofar "axial" stands for an orientation in the direction of the axis of rotation, "radial" for an orientation perpendicular to the axis of rotation and "tangential" for an orientation in the circumferential direction about the axis of rotation. It was recognized that the circular comb with particularly exact and within the entire combing substantially uniform radial position of all, if so provided according to the respective circular comb construction so theoretically, tooth tips of the combing teeth of all combing bars or if the tooth tips according to the respective circular comb construction at different Radial positions are to be considered, the considered radially over the furthest away from all combs teeth tips mounted in the comber and in particular on the shaft when on the inner and on the outer circumference side of the Kjeiskamm base body pairs in particular radially opposite contact surfaces, which preferably have at least partially matching tangential positions and / or position ranges, are present. The more accurate, uniform and compared to the underlying circular comb construction position shaker is the location of at least the radially outermost tooth tips, the closer the combing bars can be placed on the combing textile fibers holding forceps unit of the comber and the better the achievable Kämmergebnis ,

On the outer circumferential side of the Kjeiskamm base body, the combing bars are in particular directly adjacent to the contact surfaces formed by the outer contact strips. Therefore, these contact surfaces are also referred to as Kämmriegel contact surfaces.

On the inner circumferential side, the contact surfaces are formed by the inner contact strips that protrude in particular in the direction of the axis of rotation. The inner contact strips thus represent, in particular, inwardly projecting projections. At least within the combing region, these inner surfaces form at least nenkontaktstreifen on the inner circumferential side of the circular comb basic body, the only, and / or in particular exclusive, contact surfaces for mounting the circular comb main body on the shaft. In this case, the Kjeiskamm base body with these wave-mounting contact surfaces either directly abut the shaft or by means of at least one interposed additional mounting component, such as by means of a retaining flange or holder body, only indirectly communicate with the shaft. Apart from the wave-mounting contact surfaces no further contact between the Kjeiskamm base body on the one hand and the shaft or an additional mounting component on the other hand, at least within the Kämmbereichs. The tangential spaces between two adjacent inner contact strips are thus in particular contact-free. The outer contact strip and the inner contact strip of a pair of strips are preferably radially opposite each other. In particular, the outer contact strip has at least one outer contact strip subarea which, in its tangential position and extent, coincides with at least one inner contact strip subarea of the inner contact strip. These mutually tangentially overlapping portions of the outer and inner contact strips of a pair of strips are radially opposite each other.

At least two, in particular two to ten, preferably two to five, of such strip pairs are present per combing bar. Within the Kjeiskamm basic body, there are at least two partial areas per combing bar with a material connection between the inner and the outer peripheral side which is continuous in particular in the radial direction (uninterrupted). These partial areas with in the radial direction in particular continuous material connection open on the inner and the outer circumferential side in the formed by the Außenkontakt- and inner contact strips contact surfaces of the Kjeiskamm base body to the combing bars or in the direction of the shaft. Thus, a radia- 1er connection distance to the shaft at at least two tangentially spaced locations is determined very precisely for each combing bolt. This connection distance is determined in particular by the radial distance between the contact surfaces on the outer and inner contact strips significantly. It can thus be adjusted already during the manufacture of the circular comb main body by the production of the outer and inner contact strips. Even if the Kjeiskamm base body due to one of the manufacturing steps an undesirable mechanical distortion or distortion or its diameter should have a tolerance or inaccuracy of, for example, up to ± 2%, this advantageously has no negative impact on the ultimately in the assembled state of Circular comb for each combing bar resulting radial connection distance to the shaft. Such distortions or strains can be compensated as well as diameter tolerances due to the only area-wise or singular contacting of a mounting surface by means of the inner contact strips. This favorable distortion or stress compensation and / or the compensation of diameter tolerances can be achieved or can be achieved in particular by applying a suitable tensile stress to the Kiei body in its (indirect or direct) attachment to the shaft. Since during the production of the Kjeiskamm basic body, in particular, no special attention must be paid to the avoidance of twisting / stress and / or the high-precision adherence to the diameter specification, the Kjeiskamm basic body of the circular comb according to the invention can be produced simply and inexpensively. By virtue of the fact that the outer and inner contact strips are attached to the same component, namely the Kiei body, the coincidence of the tangential position / extent of the mutually associated outer and inner contact strips of each of the pairs of strips can already be determined during the production of the Kiek embankment. Main body can be ensured. At this stage, this is despite the achievable very high positionality associated with relatively little effort. In contrast, a higher effort is incurred if - which is also possible in principle - the associated outer and the inner contact strips are attached to different components and the coincidence of the tangential position / extent at a later stage, eg only during assembly of the Kjeiskamm- Body on the shaft, is ensured.

The circular comb according to the invention with the circular comb main body projecting on its inner peripheral side can be easily retrofitted to existing combing machines which are suitable for connecting the circular comb to the shaft, e.g. have a uniformly smooth cylinder (segment) shaped mounting surface. Thus, existing combers can benefit from the above-described advantages of the circular comb according to the invention.

In addition, the circular comb according to the invention avoids some of the errors that have hitherto sometimes occurred in the assembly of conventional circular combs. Thus, in conventional circular combs, for example due to a slightly tilted attachment of the Kjeiskamm base body to the mounting surface, undesirable radial gaps are formed between the inner peripheral side of the Kjeiskamm base body and the mounting surface. also shifts the radial position of the tooth tips. The same can happen if the mounting surface is dirty, for example, by combing residues. The only singular contact surfaces formed by the inner contact strips and in particular a corresponding preferably tangentially fastened or strained fastening of the circular comb base body to the mounting surface at least contribute to the circular comb according to the invention in that the consequences resulting so far due to such assembly errors are avoided from the outset or at least significantly reduced.

Furthermore, the depressions, in particular present on the inner circumferential side of the circular comb main body, which are arranged between the inwardly projecting inner contact strips, are accompanied by material savings and thus a reduction in weight of the circular comb main body.

Advantageous embodiments of the circular comb according to the invention will become apparent from the features of the dependent claims of claim 1. Conveniently, an embodiment in which each combing bars respectively exactly two pairs of strips are available. As a result, a mechanically defined bearing and support for the shaft are available for each combing bar.

According to a further advantageous embodiment, two pairs of strips formed as edge pairs are present per combing bar, wherein in each of the pairs of edge strips a tangential distance from a tangential locking edge of the respective combing bar is in particular smaller than a tangential distance between the two edge-strip pairs. This results in a mechanically especially for each combing bar stable storage and support towards the shaft. In addition, the edge strip pairs can in particular also be arranged in each case exactly on the tangential bolt edge, ie directly adjacent to the tangential bolt edge. According to a further advantageous embodiment, the outer contact strips and the inner contact strips are each arranged tangentially at the same position at least in one of the pairs of strips and have the same tangential extension. In such preferred pairs of strips, the mutually associated outer and inner contact strips and also the contact surfaces formed by them on the outer and inner peripheral surface of the circular comb main body are exactly opposite each other radially, resulting in a very efficient storage and support to the shaft for the combing bars out. There are no contact surface portions which lack a counterpart on the opposite peripheral surface.

According to a further advantageous embodiment, there are at least one inner contact strip, which is associated with two outer contact strips and thus also two pairs of strips, wherein the two outer contact strips abut respectively on different Kämmriegeln. There is thus a combined, double-acting inner contact strip. Due to this advantageous double allocation, the total number of existing on the inner peripheral side of the circular comb main body inner contact strip is reduced. The two outer contact strips associated with such a combined, double-acting inner contact strip can be separated from one another in a tangential direction, in particular structurally, for example by an indentation situated therebetween, or in particular also directly merge into one another. According to a further advantageous embodiment, the projections of the inner contact strips have a perpendicular to the axis of rotation measured radial projection height of between 0.25 mm and 5 mm, in particular of between 0.5 mm and 2 mm. On the one hand, this height is high enough that any mechanical twisting or tension or diameter tolerances of the Kjeiskamm basic body can be compensated during assembly, for example by a corresponding tensile load, and on the other hand not so high that mechanical instabilities occur. According to a further advantageous embodiment, the projections of the inner contact strips have a perpendicular to the axis of rotation measured radial projection height of between 0.25 mm and 35 mm, in particular between 0.5 mm and 25 mm. In this embodiment, the circular comb main body is in the mounted state in particular directly on the shaft and then preferably has a relatively large radial extent, in particular to comply with the specifications for the radial distance of the tooth tips of the axis of rotation. In this respect, the projection height can assume larger values of, for example, more than 10 mm and in particular of up to a few 10 mm. According to a further advantageous embodiment, the contact surfaces formed by the inner contact strips have a surface which is designed so that in the mounted state, a radial surface pressure between the inner peripheral side of the Kjeiskamm base body and a mounting surface at most 25 N / mm, and in particular at most

15 N / mm. In each case, this radial surface pressure is in each case at least 5 N / mm.

According to a further advantageous embodiment, the circular comb basic body is provided with fastening means for fastening it to the shaft. allowed and these fasteners are designed and / or contribute in particular to act on the Kjeiskamm base body when mounted on the shaft state with a tangential tensile force. By virtue of such a tangential tensile force, the circular comb basic body is also pressed against a mounting surface so that any mechanical distortions or distortions or diameter tolerances of the Kjeiskamm basic body are compensated.

According to a further advantageous embodiment, the fastening means are at least partially inwardly on the inner peripheral side (in particular radially), ie. formed to the axis of rotation, above and in particular provided with an undercut Zugbefestigungsvorprung, in particular two Zugbefestigungsvorsprünge are present, one of which is preferably arranged at one of the two tangential ends of the Kjeiskamm base body. Such

Zugbefestigungsvorsprünge allow in a simple manner an application of the circular comb main body with a tensile stress. Preferably, the Zugbefestigungsvorprung be equipped with a radial direction oblique contact or contact surface, so that the applied tensile stress has both a tangential and a radially inwardly oriented direction component.

According to a further advantageous embodiment, the fastening means are formed at least partially as at least one attachment contact surface, and a surface normal of the particular designed as a conical surface, preferably as an inner peripheral surface of a conical bore fastening attachment surface extends both relative to the axis of rotation radial direction as well as relative to the axis of rotation tangential direction obliquely or tilted. In particular, the surface finish normal of the mounting surface with the radial and the tangential direction in each case an angle from the open angle range

] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °]. Such an oblique or tilted extending mounting surface allows in a simple manner an admission of the Kjeiskamm body with a tensile stress.

In particular, the fastening means may be at least partially formed as radially extending through holes in Kjeiskamm base body at least one of its two tangential end portions, wherein at least a portion of the through holes each have a widening to the outer peripheral side bore cross-sectional area in the form of a conical seat for receiving a conical screw head of a Zugbefestigungsschraube In turn, advantageously, a tangential tensile force on the Kjeiskamm basic body also results when the tension fastening screws are mounted. In particular, each through-bore has a respective through-bore longitudinal axis running essentially in the radial direction. According to a further advantageous embodiment, the fastening means are at least partially formed as Grundkö er threaded holes for screwing Zugbefestigungsschrauben, said the base threaded holes starting from a radial boundary surface on at least one of the two tangential ends of the circular comb main body in particular as blind holes in the Kjeiskamm- Extend body into it. Such basic threaded holes allow in a simple manner an application of the circular comb main body with a tensile stress. Another object of the invention is to provide a circular comb unit of the type described above with improved properties compared to the prior art. To solve this problem, a circular comb unit according to the features of claim 11 is given. This circular comb unit according to the invention comprises a shaft rotatable about an axis of rotation and a circular comb according to the invention described above or one of the above-described preferred embodiments of the circular comb according to the invention, wherein the circular comb unit for fixing the circular comb to the shaft at least one concentric with the axis of rotation arranged smooth cylindrical segment-shaped mounting surface comprises, against which the inner contact strip of the circular comb main body. The smooth (or uniform) cylindrical segment-shaped mounting surface is in particular free of protrusions or depressions. It can either be part of the shaft in particular or part of an at least partially placed between the shaft and the circular comb base body attachment mechanism. Moreover, it is favorable if the cylinder-segment-shaped mounting surface has a high concentricity and / or rotational symmetry with respect to the axis of rotation. In particular, the mounting surface complies with the basic tolerance level IT7 according to the standard DIN ISO 286-1: 1990-11 or according to the successor version EN ISO 286-1: 2010-11. Otherwise, this circular comb unit according to the invention has substantially the same advantages that have already been described above in connection with the circular comb according to the invention and its preferred embodiments. Further advantages and favorable embodiments of this circular comb unit according to the invention emerge from the features of the claims dependent on claim 11. A configuration is advantageous in which the fastening means of the circular comb main body cooperate with fastening counterparts of the circular comb unit such that the Kieiskamm main body is subjected to a tangential tensile force. As a result, the Kjeiskamm base body is pressed tightly against the smooth, and in particular very dimensionally stable, cylinder-segment-shaped mounting surface. On the other hand, any mechanical distortions or stresses or diameter tolerances of the Kjeiskamm base body are compensated for in this pressing process. The attachment countermeasures can also be part of the shaft or, in particular, part of an attachment mechanism placed at least partially between the shaft and the Kjeiskamm base body.

According to a further advantageous embodiment, the circular comb unit has a fastening mechanism which comprises a fastening counterpart means and in particular pivotable about a pivotal tie rod which presses with a particular adjustable tangential force against the at least one inwardly projecting Zugbefesti- supply projection of the Kjeiskamm basic body. As a result, a tangential tensile stress acting on the Kjeiskamm basic body is effected and the advantageous compensation of twisting, tension or diameter tolerances in the circular comb counterbody is accomplished in a simple manner. According to a further advantageous embodiment, the circular comb unit has a fastening mechanism, which comprises an attachment counterpart means and with (in particular radially) changeable contact position on the attachment contact surface fitting counter-contact surface, and extends a surface normal of the particular as a conical mating surface, preferably as an outer peripheral surface of a conical screw head, formed fastening counter-contact surface both with respect to the rotational axis radial direction and with respect to the rotational axis tangential direction obliquely or tilted, wherein acting on the Kjeiskamm base body tangential tensile force is adjustable by means of the abutment position. In particular, the surface normal of the attachment mating abutment surface with the radial and tangential directions respectively includes an angle from the open angular range] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °]. The inclinations of the attachment contact surface and the attachment counter contact surface are in particular adapted to each other. Because of this inclination, a tangential tensile stress acting on the circular comb main body is effected in a simple manner and the advantageous compensation of twisting, tension or diameter tolerances is achieved in the Kjeiskamm counterbody.

In particular, the circular comb unit may also have a fastening mechanism comprising at least one cylinder-segment-shaped mounting surface at least with forming holding body, which is provided with at least one Haltekö er threaded hole, the Haltekörper- threaded holes together with associated Zugbefestigungsschrauben, each provided with a conical screw head, Represent attachment countermeasure. In particular, the holding body threaded bores preferably extend outside the combing area from the cylinder-segment-shaped mounting surface as blind holes in the holding body inside. A first part of the holding body threaded bores and a second part of the holding body threaded bores are tangentially spaced from each other by a holding body circumferential distance. The arranged at the first tangential end portion of the Kjeiskamm base body and fastening counter-representing through holes are tangentially spaced by a Grundkö er-circumferential angle distance from the arranged at the other tangential end of the Kjeiskamm base body and also fastening counter means representing through holes. In each case, one of the Zugbefestigungsschrauben is inserted through one of the through holes of the Kjeiskamm base body and screwed into one of the Haltekö er threaded holes, wherein the conical screw head sits within the conical seat of the through hole. The Grundkö er-circumferential angle distance of the through holes of Kreiskamm Grundköφers is smaller than the Haltekö ^ er circumferential angle distance of Halteköφer threaded hole, which depending on Eindring- or Einschraubtiefe the tapered screw heads in the conical seat of the associated through hole a tangential in the unassembled state of Kreiskamm Grundköφers Tensile stress is exerted on the circular comb base body and the compensation of twisting, tension or diameter tolerances in the circular comb counter body is effected. In an alternative embodiment, another fastening of the circular comb is made on one of the two tangential end regions of the circular comb base body instead of the screw fastening with the cone screw heads engaging in the conical seats.

Οηπ ϋωφεΓβ provided on Haltekö ^ er, such as a simple fixed bearing. According to a further advantageous embodiment, the circular comb unit has a fastening mechanism, which outside the combing area comprises a Zugschraubenverankerungsblock extending radially outwardly away from the cylinder mounting surface, the Zugschraubenverankerungsblock having anchoring block through holes for receiving the Zugbefestigungsschrauben. The tensioning screws are screwed with particular adjustable screw deep into each associated base threaded hole of the circular comb base body. As a result, in turn, in particular, a tangential tensile stress acting on the Kjeiskamm basic body is produced in a simple manner, and the advantageous compensation of twisting, tension or diameter tolerances is achieved in the circular comb counter-body. In particular, the attachment is provided by means of the Zugschraubenverankerungsblocks only at a tangential end of the circular comb-counter body. At the other tangential end, the attachment of the Kreiskamm-Grundköpers on the holding body can in particular be conventional, ie, for example by means of simple fastening screws which are inserted through substantially provided in the circular comb main body through holes and screwed into the holding body in the radial direction, or by means of interlocking B. Efestigungs Vorspränge.

Another object of the invention is to provide a further circular comb unit of the type described above with improved properties compared to the prior art.

To solve this problem, a circular comb unit according to the features of claim 16 is given. This circular comb unit according to the invention comprises a shaft rotatable about an axis of rotation, one Circular comb fixed to the shaft and at least one mounting surface arranged concentric with the axis of rotation and having a substantially cylindrical segment-shaped basic shape. The circular comb fixed to the shaft has a Kjeiskamm base body with an outer peripheral side and an inner peripheral side, which is designed as a concentric to the rotation axis arranged smooth cylindrical segment-shaped inner peripheral surface, and a plurality of arranged on the outer peripheral side of the Kjeiskamm body comb, which in its entirety a Kämm-Umfangsswin - Cover kelsegment and define a combing of the circular comb. At least two axially extending in the direction of the axis of rotation and tangentially with respect to the axis of rotation spaced outer contact strip on the outer peripheral side of the circular comb main body are present per combing bar, the Kämmriegel contact surfaces on which the respective combing rests form. The mounting surface has axially in the direction of the axis of rotation, radially with respect to the axis of rotation outwardly projecting and tangentially with respect to the axis of rotation spaced contact projections, at least within the combing area form the only partial surfaces of the mounting surface, with which the mounting surface on the inner peripheral surface of the circular comb main body for direct or indirect connection of the circular comb main body with the shaft is applied. In this case, at least some of the outer contact strips of the Kjeiskamm basic body are each assigned to one of the contact projections of the mounting surface or, if a plurality of contact projections of the mounting surface axially aligned, but spaced from each other as Kontaktvorspmngreihen rows one of these Kontaktvorspmngreihen the mounting surface and form the respective outer contact strip with the associated Kontaktvorsprung or the associated Kontaktvorspmngreihe each a strip / Vorspmngpaar, wherein the outer contact strip of the Kreiskamm- Main body and the contact projection of the mounting surface or the contact projection row of the mounting surface of each of the strip / projection pairs overlap in their tangential extent at least partially, and wherein each combing bar at least two strip / projection pairs are present.

The smooth cylinder-segment-shaped inner peripheral surface of the circular comb main body has in particular no projections or recesses. It is so far in particular a uniform cylinder-segment-shaped surface without interruption or disturbance of the pure cylinder segment shape. The mounting surface provided for mounting or fastening the circular comb main body on the shaft can in particular be part of the shaft or, in particular, part of an attachment mechanism placed at least partially between the shaft and the circular comb main body. In addition, the mounting surface can be made in several parts and, e.g. composed of several axially spaced apart individual surfaces.

The further circular comb unit according to the invention differs from the circular comb according to the invention described above and the first circular comb unit according to the invention also described above essentially in that the inner peripheral side of the Kjeiskamm main body is designed as a projection-and recess-free smooth cylinder-segment-shaped surface and for the abutment against the inner peripheral side of the Kjeiskamm basic body certain mounting surface a structure with projections and recesses is provided. In this case, this structure of the mounting surface essentially corresponds to the circular comb according to the invention described above and, in the case of the above-described first annular comb unit according to the invention, arranged on the inner peripheral side of the Kiei body nenkontaktstreifen. In this respect, the advantages and modes of action described above for the inventive circular comb described above and for the above-described first circular comb unit according to the invention apply correspondingly to the further circular comb unit according to the invention.

In the case of the further circular comb unit according to the invention, too, the circular comb with particularly exact radial position, which is theoretically so provided according to the circular comb construction in question, forms tooth tips of the combing teeth of all combing bars or, if the tooth tips according to FIG Circular comb construction in question should lie at different radial positions, which, viewed across all combing bars, can be mounted on the outer circumference of the Kjeiskamm base body and on the outer circumference of the combing teeth of all combing bars in the comber and, in particular, on the shaft the mounting surface on which rests the Kjeiskamm base body pairs with, in particular, radially opposite contact surfaces, preferably at least partially matching tangential positions and / or Positionsbe - have rich, are present. The more accurate, uniform and compared to the underlying circular comb construction position shaker is the location of at least the radially outermost tooth tips, the closer the combing bars can be placed on the combing textile fibers holding forceps unit of the comber and the better the achievable Kämmergebnis ,

On the outer peripheral side of the Kjeiskamm base body are on the contact surfaces formed by the outer contact strips, the combing bars again, in particular, directly. Therefore, these contact surfaces are also referred to as Kämmriegel contact surfaces.

On the mounting surface, the contact surfaces are formed by the outwardly, ie in particular away from the axis of rotation, projecting contact projections. At least within the combing area, these contact projections form the only, and / or, in particular, exclusive, partial surfaces with which the mounting surface for mounting the Kjeiskamm main body abuts the shaft on the inner peripheral side of the Kieiskamm main body. In this case, the connection of the Kjeiskamm basic body to the shaft taking place by means of these partial surfaces can be configured directly or indirectly. In the direct connection, the mounting surface is in particular a direct component of the shaft. On the other hand, in the case of the indirect connection, the mounting surface is in particular a component of at least one additional mounting component arranged between the Kjeiskamm base body and the shaft, such as e.g. a retaining flange or retaining body. Apart from the partial surfaces of the mounting surface formed by the contact projections, no further contacting takes place at least within the combing region between the Kiei core body on the one hand and the shaft or an additional mounting component on the other hand. The tangential spaces between two adjacent contact projections are therefore in particular contact-free.

Also in the case of the further circular comb unit according to the invention, the contact surfaces in particular satisfy the basic tolerance level IT7 according to the standard DIN ISO 286-1: 1990-11 or according to the successor version EN ISO 286-1: 2010-11. The outer contact strip of the Kreiskamm Grundköφers and the contact projection of the mounting surface or the contact projection row of the mounting surface of a strip / V orsprungpaares are preferably radially opposite each other. In particular, the outer contact strip has at least one outer contact strip portion which, in its tangential position and extent, coincides with at least one contact projection portion of the contact projection or contact projection row. These tangentially overlapping partial regions of the outer contact strip and the contact projection or the contact projection row of a strip / v orsprungpaares are radially opposite each other.

There are at least two, in particular two to ten, preferably two to five such strip / projection pairs per combing bar. Within the Kjeiskamm basic body, there are at least two partial areas per combing bar with a continuous material connection in the radial direction, in particular between the inner and the outer peripheral side. These subregions with in particular a continuous material connection in the radial direction open on the inner and outer peripheral sides in contact surfaces of the circular comb base body to the combing bars (formed by the outer contact strips) and to the mounting surface. Thus, a radial connection distance to the shaft is defined very precisely for each combing bolt at at least two tangentially spaced locations. This connection distance is decisively determined in the assembled state, in particular by the radial distance between the contact surfaces on the outer contact strip of the circular comb base body and the contact projections of the mounting surface. Even if the Kjeiskamm main body due to one of the manufacturing steps an undesirable mechanical distortion or distortion or its diameter tolerance or inaccuracy of For example, should have by up to ± 2%, this advantageously has no negative impact on the resulting in the assembled state of the circular comb for each combing bar radial connection distance to the shaft. Such distortions or strains can be compensated as well as diameter tolerances due to the only areawise or singular Kontaktiemng by means of the contact jumps of the mounting surface. This favorable distortion or stress compensation and / or the compensation of diameter tolerances can be achieved or can be achieved, in particular, by applying a suitable tensile stress to the Kiei body in its (indirect or direct) attachment to the shaft. Since during the production of the Kjeiskamm basic body, in particular, no special attention must be paid to the avoidance of twisting / stress and / or the high-precision adherence to the diameter specification, the Kjeiskamm basic body can also be produced easily and inexpensively by the further circular comb unit according to the invention.

In addition, the further circular comb unit according to the invention avoids some of the errors that have hitherto sometimes occurred in the assembly of conventional circular combs. Thus, in conventional circular combs, for example due to a slightly tilted attachment of the circular comb main body to the mounting surface unwanted radial gaps between the inner peripheral side of the Kjeiskamm base body and the mounting surface, which also shifts the radial position of the tooth tips. The same can happen if the mounting surface is dirty, for example, by combing residues. The only singular contact surfaces formed by the contact jumps of the mounting surface and, in particular, a corresponding, preferably tangentially fastened or strained attachment of the Kjeiskamm main body to the mounting surface, contribute to the invention of the invention. According to the invention further circle comb unit at least with the fact that the consequences resulting from such assembly errors so far circumvented from the outset or at least significantly reduced. Furthermore, the recesses, in particular existing on the mounting surface, which are arranged between the outwardly projecting contact projections, are associated with material savings and thus with a weight reduction of the overall arrangement. Further advantages and favorable embodiments of this further circular comb unit according to the invention emerge from the features of the claims dependent on claim 16.

Favorable is an embodiment in which each combing bars respectively exactly two strip / V orsprungpaare are available. This is for everyone

Kämmriegel a mechanically defined storage and support to the shaft before.

According to a further advantageous embodiment, two pairs of strips / projections are provided per combing bolt, wherein in each of the pairs of edges a tangential distance from a tangential locking edge of the respective combing rod is in particular smaller than a tangential distance between the two edge pairs. This results in a mechanically particularly stable storage and support to the shaft for each combing bar. In addition, the edge pairs can in particular also be arranged in each case exactly on the tangential bolt edge, ie directly adjacent to the tangential bolt edge. According to a further advantageous embodiment, the outer contact strips of the circular comb main body and the contact projection of the mounting surface or the contact projection row of the mounting surface are each arranged tangentially at the same position at least in one of the strip / V orsprungpaare pairs and have an equal tangential extent. In such preferred strip / V orsprungpaaren the mutually associated outer contact strips and contact projections or contact projection rows and formed by them on the outer peripheral surface of the circular comb main body or on the mounting surface Kontaktflä- chen each other exactly radially opposite, whereby for the combing bars a particularly efficient storage and support to the shaft. There are no contact surface portions which lack a pendant on the opposite contact surface. According to a further advantageous embodiment, there are at least one contact projection or at least one contact projection row associated with the two outer contact strips of Kreiskamm- base body and thus two Streifen- / V orsprungpaaren, wherein the two outer contact strips of the circular comb base body respectively abut different combing bars. There is thus a combined, double-acting contact projection or a combined, double-acting contact projection row. Due to this advantageous double allocation reduces the total number of existing on the mounting surface contact protrusions. The two outer contact strips assigned to such a combined, double-acting contact projection or to such a combined, double-acting contact projection row can be structurally separated from one another in the tangential direction, for example by an indentation situated therebetween, or can also merge directly into one another. According to a further advantageous embodiment, the contact projections have a perpendicular to the axis of rotation measured radial projection height of between 0.25 mm and 5 mm, in particular of between 0.5 mm and 2 mm. On the one hand, this height is high enough that any mechanical distortions or distortions or diameter tolerances of the Kjeiskamm basic body can be compensated during assembly, for example by a corresponding tensile load, and on the other hand not so high that mechanical instabilities occur.

According to a further advantageous embodiment, the contact surfaces formed by the contact jumps have a surface area and a surface distribution which are designed such that a radial surface pressure between the inner circumferential surface of the Kiei base body and the contact jumps of the mounting surface is at most 25 N / mm, and in particular at most 15 N / mm. In each case, this radial surface pressure is in each case at least 5 N / mm.

According to a further advantageous embodiment of the circular comb basic body is equipped with fastening means for its attachment to the shaft and these fasteners are designed and / or contribute in particular to the fact that the Kjeiskamm base body is mounted tangentially clamped on the shaft. As a result of such a tangential tensile force, the Kjeiskamm basic body is also pressed against a mounting surface, so that any mechanical distortions or tensions or diameter tolerances of the Kjeiskamm basic body are compensated. According to a further advantageous embodiment, the fastening means of the circular comb main body also cooperate with fastening counterparts of the circular comb unit so that the circular comb main body is subjected to a tangential tensile force. As a result, the Kjeiskamm base body is pressed tightly against the mounting surface. On the other hand, any mechanical distortions or stresses or diameter tolerances of the Kjeiskamm base body are compensated for in this pressing process. The attachment countermeasures can also be part of the shaft or, in particular, part of an attachment mechanism placed at least partially between the shaft and the Kjeiskamm base body.

According to a further advantageous embodiment, the fastening means are at least partially inwardly on the inner peripheral side (in particular radially), ie. to the axis of rotation, protruding and in particular provided with a Hinters chneidung trained Zugbefestigungsvor- jump, in particular two Zugbefestigungsvorsprünge are present, one of which is preferably located at one of the two tangential ends of the Kjeiskamm basic body. Such Zugbefestigungsvorsprünge allow in a simple manner an application of the circular comb main body with a tensile stress. Preferably, the Zugbefestigungsvorsprung can be equipped with an oblique to the radial direction contact or contact surface, so that the applied tensile stress has both a tangential and a radially inwardly oriented directional component.

According to a further advantageous embodiment, the circular comb unit has a fastening mechanism, which has a pulling counterpart representing a means of rotation and in particular pivotable about a pivot axis. Anchor which presses with a particular adjustable tangential force against the at least one inwardly projecting Zugbefestigungsvor- jump of the Kjeiskamm basic body. As a result, acting on the Kjeiskamm basic body tangential tension is effected and the advantageous compensation of twisting, tension or

Diameter tolerances in the circular comb-counter body accomplished in a simple manner.

According to a further advantageous embodiment, the fastening means are at least partially formed as at least one fastening contact surface, and extends a surface normal of the particular as a conical surface, preferably as an inner peripheral surface of a conical bore, formed Befestigungsanlagefläche both relative to the axis of rotation radial direction and relative to the axis of rotation tangential direction oblique or tilted. In particular, the surface normal of the fastening contact surface with the radial and the tangential direction in each case encloses an angle from the open angle range

In particular, the fastening means may be at least partially formed as a radially extending through holes in the Kjeiskamm base body at least one of its two tangential end portions, wherein at least a portion of the through holes each have a widening to the outer peripheral side bore cross-sectional area in the form of a conical seat for receiving a conical screw head of a Zugbefestigungsschraube has, so that when mounted Zugbefes- Tigungsschrauben turn advantageously also a tangential tensile force on the Kjeiskamm basic body results. In particular, each through-bore has a respective through-bore longitudinal axis running essentially in the radial direction.

According to a further advantageous embodiment, the circular comb unit has a fastening mechanism, which comprises an attachment counterpart means and with (in particular radially) changeable contact position on the attachment contact surface fitting counter-contact surface, and extends a surface normal of the particular as a conical mating surface, preferably as an outer peripheral surface of a conical screw head, formed fastening counter-contact surface both with respect to the rotational axis radial direction and with respect to the rotational axis tangential direction obliquely or tilted, wherein acting on the Kjeiskamm base body tangential tensile force is adjustable by means of the abutment position. In particular, the surface normal of the attachment mating abutment surface with the radial and tangential directions respectively includes an angle from the open angular range] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °]. The inclinations of the attachment contact surface and the attachment counter contact surface are in particular adapted to each other. Because of this inclination, a tangential tensile stress acting on the circular comb main body is effected in a simple manner and the advantageous compensation of twisting, tension or diameter tolerances is achieved in the Kjeiskamm counterbody.

In particular, this further circular comb unit may likewise have a fastening mechanism which comprises at least one mounting element which forms the cylindrical segment-shaped mounting surface, at least with a forming holding body. which is provided with at least one holding body threaded hole, wherein the holding body threaded holes together with associated Zugbefestigungsschrauben, each of which is provided with a conical screw head, mounting anti-freeze. In particular, the holding body threaded bores preferably extend out of the combing area from the cylinder-segment-shaped mounting surface as blind holes into the holding body. A first part of the holding body threaded bores and a second part of the holding body threaded bores are tangentially spaced from each other by a holding body circumferential distance. The arranged at the first tangential end portion of the circular comb main body and fixing counter-representing through holes are tangentially spaced by a Grundkö er-circumferential angle distance from the arranged at the other tangential end portion of the circular comb base body and also fixing counter means representing through holes. In each case, one of the Zugbefestigungsschrauben is inserted through one of the through holes of the circular comb main body and screwed into one of the holding body threaded holes, wherein the conical screw head is seated within the conical seat of the through hole. The basic body circumferential angle distance of the through holes of the Kjeiskamm base body is smaller than the holding body circumferential angle distance of the Haltekö er threaded hole in the uninstalled state of the Kjeiskamm body, which depending on penetration or screw deep the tapered screw heads in the conical seat a tangential tensile stress on the circular comb main body is exerted on the associated through bore and the compensation of twisting, tension or diameter tolerances in the circular comb counter body is effected. In an alternative embodiment, one of the two tangential end regions of the circular comb main body instead of the screw fastening with the in conical seats a different attachment of the circular comb base body provided on the holding body, such as a simple fixed bearing cross-conical screw heads. According to a further advantageous embodiment, the fastening means are at least partially formed as Grundkö er threaded holes for screwing Zugbefestigungsschrauben, said the base threaded holes starting from a radial boundary surface on at least one of the two tangential ends of the circular comb main body in particular as blind holes in the Kjeiskamm- Extend body into it. Such basic threaded holes allow in a simple manner an application of the circular comb main body with a tensile stress. According to a further advantageous embodiment, the circular comb unit has a fastening mechanism which, outside the combing area, comprises a tension bolt anchoring block extending radially outwardly away from the mounting surface, wherein the tension bolt anchoring block has anchoring block through holes for receiving the tension fastening screws. The Zugbefestigungsschrauben are screwed in particular adjustable screwing depth in the respective associated base threaded hole of the circular comb main body. This in turn causes in a simple manner acting on the circular comb main body particularly adjustable tangential tension tension and the advantageous compensation of torsions, distortions or diameter tolerances in Kreiskamm- counter body accomplished. In particular, the attachment is provided by means of the Zugschraubenverankerungsblocks only at a tangential end of the Kjeiskamm-counter body. At the other tangential end the attachment of the Kreiskamm-Grundköpers on the holding body in particular conventionally done, so for example by means of simple fastening screws, which are inserted through substantially provided in the circular comb main body through holes and screwed into the holding body, or by means of interlocking B efestigungs projections.

Another object of the invention is to provide a further circular comb of the type described above with respect to the previously known embodiments improved properties.

To solve this problem, a circular comb according to the features of claim 30 is given. This further circular comb according to the invention comprises a Kjeiskamm base body with an outer circumferential side and an inner peripheral side, wherein the circular comb basic body is equipped with fastening means for its attachment to the shaft, and arranged on the outer peripheral side of the Kjeiskamm basic body particularly directly adjacent Kämmelemente which in their entirety cover a combing circumferential angle segment and define a combing area of the circular comb. The fastening means of the Kjeiskamm base body are designed to act on the circular comb main body in the mounted state on the shaft with a tangential tensile force. The definitions given above in connection with the first circular comb according to the invention apply equally to this further circular comb according to the invention. This applies in particular to the basic form of the circular comb basic body as well as to the location or direction information used. It was recognized that the circular comb with particularly exact and within the entire combing substantially uniform radial position of all, if so provided according to the respective circular comb construction so theoretically, tooth tips of the combing teeth of all combing elements or if the tooth tips according to the respective circular comb construction at different Radial positions are to be considered, the radial furthest away from the axis of rotation removed tooth tips in the combing machine and in particular on the shaft over all combing bars seen when the Kjeiskamm basic body in its (direct or indirect) attachment to the shaft with a tensile force or Tensile stress is applied. A tangential tensile force contributes significantly to the fact that the Kjeiskamm base body is pressed against a mounting surface.

Under combing elements are understood in particular needles, pin strips, sawtooth wire sections, comb teeth or Sägezahns dance parts. Several such combing elements can be combined to comb bars, Kämmsegmenten or Kämmgarnitur.

The more accurate, uniform and compared to the underlying circular comb construction position shaker is the location of at least the radially outermost tooth tips, the closer the combing elements can be placed on a combing textile fibers holding forceps unit of the comber and the better the achievable Kämmergebnis ,

Even if the Kjeiskamm base body due to one of the manufacturing steps an undesirable mechanical distortion or distortion or its diameter should have a tolerance or inaccuracy of, for example, up to ± 2%, this advantageously has no negative influence on the position of the tooth tips of the combing elements which ultimately results in the assembled state of the circular comb. Such distortions or tensions can be compensated as well as diameter tolerances due to the Zugkraftbeaufschlagung the Kjeiskamm body.

Since, during the production of the circular comb main body, in particular no special attention must be paid to the avoidance of distortions / tensions and / or to the highly precise observance of the diameter specification, the circular comb main body can also be used for the further circular comb according to the invention easy and inexpensive to produce.

Advantageous embodiments of the further circular comb according to the invention emerge from the features of the claims dependent on claim 30. A refinement is expedient in which the fastening means are at least partially provided as at least one on the inner circumferential side (in particular radially) inwards, ie to the axis of rotation, above and in particular provided with an undercut Zugbefestigungsvorsprung or at least one on the outer peripheral side (in particular radially) to au - ßen above and in particular with an undercut Zugbefestigungsvorprung are formed, in particular two Zugbefestigungsvorsprünge are present, one of which is preferably arranged at one of the two tangential ends of the Kjeiskamm basic body. Such Zugbefestigungsvorsprünge allow in a simple manner an application of the circular comb basic body with a tensile stress. Preferably, the Zugbefestigungsvorprung be equipped with a radial direction oblique contact or contact surface, so that the applied tensile stress has both a tangential and a radially inwardly oriented direction component.

According to a further advantageous embodiment, the fastening means are at least partially formed as at least one fastening contact surface, and extends a surface normal of particular as a Ke gelgelgelfläche, preferably as an inner peripheral surface of a tapered bore, formed Befestigungsanlagefläche both with respect to the axis of rotation radial direction as well as related to the axis of rotation tangential direction obliquely or tilted. In particular, the surface normal of the fastening contact surface with the radial and the tangential direction in each case encloses an angle from the open angle range

In particular, the fastening means may be at least partially formed as a radially extending through holes in the Kjeiskamm base body at least one of its two tangential end portions, wherein at least a portion of the through holes each have a widening to the outer peripheral side bore cross-sectional area in the form of a conical seat for receiving a conical screw head of a Zugbefestigungsschraube has, so that in turn mounted train fastening screws advantageously also a tangential tensile force on the Kjeiskamm base body results. Every through hole In particular, each has a substantially through-hole longitudinal axis extending in the radial direction.

According to a further advantageous embodiment, the fastening means are at least partially designed as base threaded holes for screwing Zugbefestigungsschrauben, wherein the base threaded holes starting from a radial boundary surface on at least one of the two tangential ends of the circular comb main body in particular as blind holes in the Kjeiskamm basic body extend into it. Such Grundkö he threaded holes allow in a simple manner an application of the circular comb main body with a tensile stress.

According to a further advantageous embodiment, the fastening means are at least partially formed as at least one integrally formed on one of the two tangential ends of the Kjeiskamm base body receiving lug with a extending in the direction of the rotation axis Ösen passage opening for releasably passing a rotatable eccentric tension rod. Such a receiving eye can be attached to the circular comb main body without great effort. As part of an eccentric mechanism, it also allows in a simple way the Zugkraftbeaufschlagung the circular comb main body.

According to a further advantageous embodiment of the circular comb main body is designed to deform under the provided for its attachment to the shaft loading with the tangential tensile e-lastisch. Due to the elastic deformation of the Kjeiskamm base body fits very closely and well to a mounting surface, so that production-related geometry tolerances, ie deviations from the actually desired exact geometry shape, and also production-related stresses within the Kjeiskamm basic body are largely compensated or evened out. Thus, the circular comb main body in its assembled state has practically the theoretically desired shape and dimension according to the design documents. The described manufacturing tolerances of the circular comb basic body are then virtually completely eliminated.

The same advantages result in a further advantageous embodiment in which the Kjeiskamm base body consists of a base material with a yield strength or a yield strength and is designed to accommodate its attachment to the shaft a permanent caused by the fastening force stress ranging between 40% and 80%, in particular between 45% and 70%, and preferably between 47% and 53% of the yield strength or yield strength. During operation, the stress caused by the combing comes with an additional stress to the load caused by the fastening force. The circular comb main body is preferably designed to withstand both voltage loads without damage. Whether the yield strength or the yield strength is decisive depends on the choice of material for the circular comb main body.

According to a further advantageous embodiment of the circular comb main body has on its inner peripheral side a cylindrical segment-shaped inner peripheral surface with an inner radius Ri ((p, z), wherein the value of the inner radius Ri ((p, z) in the unmounted state of the circular comb main body depending on a tangential and axial position local radius and these local radius variations are in the range between ± 0.2% and ± 2%, more preferably between ± 0.3% and ± 1.2%, and preferably between ± 0.35% and ± 0.55% of an inner radius - setpoint R _is moving. The Kjeiskamm basic body has production tolerances, which can be manifested in particular in the form of deviations in the predetermined contour and / or in the form of deviations from the straightness and / or in the form of mechanical torsions and / or distortions. These manufacturing inaccuracies arise, in particular, when the circular comb main body is designed as a comparatively inexpensive extruded profile preferably made of aluminum or an aluminum-containing material. Such production-related deviations can advantageously be compensated by the zugkraftbeaufschlagte attachment of the Kjeiskamm body easily.

Another object of the invention is to provide a further circular comb unit of the type described above with improved properties compared to the prior art. To solve this problem, a circular comb unit according to the features of claim 38 is given. This further circular comb unit according to the invention comprises a shaft rotatable about a rotation axis and a further circular comb according to the invention described above or one of the above-described preferred embodiments of the further circular comb according to the invention, the circular comb unit for fixing the circular comb to the shaft being at least concentric to the axis of rotation arranged mounting surface on which the Kjeiskamm basic body with its ner inner circumferential side rests, the Kreiskamm Grundkö he is attached under application of a tangential tensile force on the shaft.

In particular, the mounting surface can be a smooth (that is, not provided with a surface structuring) cylinder-segment-shaped surface, which is in particular free of projections or depressions. It may either be part of the shaft in particular or part of an at least partially placed between the shaft and the circular comb main body attachment mechanism. In this respect, the attachment of the Kjeiskamm basic body to the shaft can thus be configured, in particular, indirectly or directly. Moreover, it is favorable if the cylinder-segment-shaped mounting surface has a high concentricity and / or rotational symmetry with respect to the axis of rotation. In particular, the mounting surface complies with the basic tolerance grade IT7 according to the standard DIN ISO 286-1: 1990-11 or according to the successor version EN ISO 286-1: 2010-11.

Otherwise, this further circular comb unit according to the invention has substantially the same advantages which have already been described above in connection with the further circular comb according to the invention and its preferred embodiments.

Further advantages and favorable embodiments of this circular comb unit according to the invention emerge from the features of the claims dependent on claim 38.

An embodiment is expedient in which the circular comb unit comprises attachment countermeans which, for fastening the circular comb basic body to the shaft, are connected to the fastening means of the circular comb base. interact body so that the Kjeiskamm body is subjected to the tangential tensile force. As a result, the circular comb main body is pressed tightly against the smooth and in particular very dimensionally stable cylinder segment-shaped mounting surface. On the other hand, any mechanical distortions or stresses or diameter tolerances of the Kjeiskamm base body are compensated for in this pressing process. The attachment countermeasures can also be part of the shaft or, in particular, part of an attachment mechanism placed at least partially between the shaft and the Kjeiskamm base body.

According to a further advantageous embodiment, the circular comb unit has a fastening mechanism for fastening the circular comb basic body to the shaft, the fastening mechanism comprising a tie rod which represents a fastening counteracting means and is pivotable in particular about a pivot axis, which at the at least one projecting inwards or outwards Zugbefestigungsvorsprung the circular comb basic body under the action of the Kjeiskamm basic body with the particular adjustable tangential tensile force acts. As a result, acting on the Kjeiskamm basic body tangential tension is effected and accomplished the advantageous compensation of twisting, tension or diameter tolerances in the circular comb-counter body in a simple manner. According to a further advantageous embodiment, the circular comb unit has a fastening mechanism for fastening the circular comb main body to the shaft, wherein the fastening mechanism comprises a fastening counterpart means representing an attachment position and with (in particular radially) changeable contact position on the fastening contact surface. and a surface normal of the particular designed as a conical surface, preferably as an outer peripheral surface of a conical screw head attachment Gegenanla- surface both to the radial axis relative to the axis of rotation and with respect to the axis of rotation tangential direction is inclined or tilted, wherein the acting on the circular comb basic body tangential tensile force is adjustable by means of the contact position. In particular, the surface normal of the attachment mating abutment surface with the radial and tangential directions respectively includes an angle from the open angular range] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °]. The inclinations of the attachment contact surface and the attachment counter contact surface are in particular adapted to each other. Due to this inclination, a tangential tensile stress acting on the Kjeiskamm base body is effected in a simple manner and the advantageous compensation of twisting, tension or diameter tolerances is achieved in the circular comb counterbody.

In particular, the circular comb unit can also have a fastening mechanism that comprises at least one mounting surface, in particular a cylinder segment, with at least one retaining body provided with at least one retaining body threaded bore, the retaining body threaded bores together with associated tightening bolts each providing a conical screw head are, represent attachment countermeasures. In particular, the holding body threaded bores preferably extend out of the combing area from the cylinder-segment-shaped mounting surface as blind holes into the holding body. A first part of the holding body threaded bores and a second part of the holding body threaded bores are tangent to one another about a holding body height circumferential distance spaced. The Durchgangsbohmngen arranged at the first tangential end portion of the circular comb main body and representing Gegengegenbohmngen are tangentially spaced by a Gmndkörper circumferential angle distance from the pers on the other tangential end of the Kreiskamm Gmndkör- arranged and also Befestigungsgegenmittel representing Durchgangsbohmngen. In each case one of the tension fastening screws is inserted through one of the through-holes of the circular comb main body and screwed into one of the retaining body threaded bores, wherein the conical screw head is seated within the conical seat of the through-bore. The Gmndkörper circumferential angle distance of Durchgangsbohmngen the Kjeiskamm basic body is smaller in the uninstalled state of the Kjeiskamm basic body than the holding body circumferential angle distance of the holding body threaded hole, which depending on penetration or screw deep of the tapered screw heads in the conical seat associated Durchgangsbohmng a tangential tensile stress on the Kreiskamm Gmndkörper exerted and the compensation of twisting, tension or diameter tolerances in Kreiskamm counter-body is effected. In an alternative embodiment, instead of the screw fastening with the conical screw heads engaging in the conical seats, another fastening of the circular comb body to the holding body is provided on one of the two tangential end regions of the circular comb body, such as a simple fixed bearing.

According to a further advantageous embodiment, the circular comb unit has a fastening mechanism for fastening the circular comb main body to the shaft, wherein the fastening mechanism comprises a Zugschraubenverankemngsblock outside the Kämmbereichs, and the Zugschraubenverankemngsblock Durchgangsbohmngen for receiving the Zugbefestigungsschrauben. In particular, the train bolt anchoring block radially outward away. The tensioning screws are screwed with particular adjustable screwing depth in the respective base body threaded bore of the circular comb basic body. As a result, in turn, in particular, a tangential tensile stress acting on the Kjeiskamm basic body is produced in a simple manner, and the advantageous compensation of twisting, tension or diameter tolerances is achieved in the circular comb counter-body. In particular, the attachment by means of the Zugschraubenverankerungsblocks only at a tangential end of the circular comb-counter body is present. At the other tangential end, the attachment of the Kreiskamm-Grundköpers on the holding body can in particular be conventional, ie, for example by means of simple fastening screws which are inserted through substantially provided in the circular comb main body through holes and screwed into the holding body in the radial direction, or by means of interlocking B. Efestigungs Vorspränge.

According to a further advantageous embodiment, the circular comb unit has a fastening mechanism for fastening the circular comb basic body to the shaft, which comprises at least one receiving counter-eyelet, which receiving counter-eyelet likewise has a counter-eyelet passage opening extending in the direction of the rotation axis for releasably passing through the rotatable eccentric tension rod In which an overlapping degree of the eyelet passage opening of the circular comb main body and the counter-senor passage opening of the fastening mechanism by means of a rotary movement of the inserted eccentric tension rod can be increased, whereby at the same time a loading of the Kjeiskamm basic body takes place with the tangential tensile force. By turning the eccentric tension rod in its exciting final assembly position, the receiving lug and forced the receiving counter, to move toward each other, which also increases the overlap of the eyelet-through opening and the counter-eyelet-through opening and advantageously also the Zugkraftbeaufschlagung the Kjeiskamm body is carried out. This eccentric mechanism thus allows the introduction of a high tensile force or tension in the circular comb basic body in a simple manner, so that the desired compensation of manufacturing tolerances or inaccuracies takes place. According to a further advantageous embodiment, the circular comb unit has a fastening mechanism which is designed to apply the tangential traction force to the circular comb main body for its attachment to the shaft in such a way that the circular comb main body elastically deforms. Due to the elastic deformation of the Kjeiskamm body nestles very closely and well on the mounting surface, so that production-related geometry tolerances, ie deviations from the actually desired exact geometry shape, and also production-related stresses within the Kjeiskamm basic body are largely compensated or evened out. Thus, the circular comb basic body in its mounted state has practically exactly the theoretically desired shape and dimension according to the design documents. The described manufacturing tolerances of the circular comb basic body are then virtually completely eliminated. The same advantages arise in a further advantageous embodiment in which the Kjeiskamm base body consists of a base material with a yield strength or a yield strength, and the Kreiskammeinheit has a fastening mechanism which is adapted to the Kjeiskamm base body for its attachment so with the wave to impose on the tangential tensile force that the stress load of the circular comb main body caused by the fastening force lies in the range between 40% and 80%, in particular between 45% and 70%, and preferably between 47% and 53% of the yield strength or the yield strength ,

According to a further advantageous embodiment, the circular comb unit has a fastening mechanism for fastening the circular comb basic body to the shaft, wherein the fastening mechanism comprises a counterweight to the circular comb. The counterweight is in particular an integrally molded integral part of another component fastening mechanism. Alternatively, it is also possible that the counterweight stands as a separate component in mechanical connection and / or interaction with other components of the fastening mechanism. The inclusion of the counterweight in the attachment mechanism results in a design with an overall reduced number of individual components.

According to a further advantageous embodiment, the circular comb unit has a tearing segment which is intended for tearing off a combed fiber tuft in the combing area, with the tear segment being fastened to the shaft in particular approximately opposite the combing area of the circular comb under the action of a tangential tensile force. The attachment of the Abreißsegments on the shaft is in particular directly or indirectly, z. B. on holding body, designed. Due to the zugkraftbeaufschlagten attachment arise for the Abreißsegment substantially the same advantages as for the Kjeiskamm basic body. Thus, even when Abreißsegmeent production-related geometry inaccuracies or fluctuations compensated. The result is a very accurate and positionally stable positioning of Abreißmantelfläche.

According to a further advantageous embodiment, a first fastening mechanism is provided for fastening the circular comb to the shaft, and a second fastening mechanism for fastening the tear-off segment to the shaft, wherein the first fastening mechanism and the second fastening mechanism are designed essentially identical. This simplifies the overall structure and reduces the production costs. Since fewer individual components are needed, u. a. the logistics effort during production.

There are further favorable embodiments of the further circular comb according to the invention and the further circular comb unit according to the invention realized therewith. Thus, embodiments with the strip-shaped contact zones according to the first circular comb according to the invention and the two corresponding first two circular comb units are also possible in particular. Further features, advantages and details of the invention will become apparent from the following description of exemplary embodiments with reference to the drawing. It shows:

1 shows an embodiment of a circular comb unit of a combing machine with a contact strip attached to a shaft

Circular comb in a plan view of an axial end face,

1 in a partially assembled state in a side view parallel to the axis of rotation of the shaft, 4 shows a further embodiment of a circular comb unit of a combing machine with a circular comb secured to a shaft by means of a differently configured contact strip in a sectional view of a plan view of an axial end face, FIG first embodiment of a in the circular comb units of FIG. 1 to 3 and FIG. 4 for tangentially tensioned attachment of the circular comb on the shaft provided fastening mechanism with a pivot armature in a sectional view of a plan view of an axial end face,

6 shows a second exemplary embodiment of a fastening mechanism provided on the shaft for the tangentially tensioned fastening of the circular comb on the shaft in the circular comb units according to FIGS. 1 to 3, with a Zugschraubenverankerungs- block in a sectional view of a plan view of an axial end face,

7 shows a third exemplary embodiment of a fastening mechanism provided on the shaft for the tangentially tensioned fastening of the circular comb on the shaft in the case of the circular comb units according to FIGS. 1 to 4, with a conical head screw mounting in a sectional representation of a plan view of an axial end face; 8 shows a further exemplary embodiment of a circular comb unit of a combing machine with a circular comb fastened to a shaft by means of contact projections in a plan view of an axial end face,

9 is an enlarged detail of the top view of the circular comb unit of FIG. 8,

10 shows a further exemplary embodiment of a circular comb unit of a combing machine with a circular comb fastened to a shaft by means of differently configured contact projections, in a sectional representation of a plan view of an axial end side,

11 shows a further exemplary embodiment of a circular comb unit of a combing machine with a circular comb and a tangentially tensioned fastening of the circular comb on a (not shown) shaft and a counterweight comprising fastening mechanism in a plan view of an axial end face,

12 shows a further embodiment of a circular comb unit of a combing machine with a circular comb and a tangentially tensioned fastening of the circular comb on a (not shown) shaft provided and an integrated counterweight comprising fastening mechanism in a plan view of an axial end face,

Fig. 13 is a tolerance-prone contour of the Kjeiskamm body of the circular comb of the circular comb unit of FIG. 12 in not yet finally assembled state in an enlarged detail,

14 shows an eccentric partial mechanism of the fastening mechanism of the circular comb unit according to FIG. 12 in an enlarged detail, and FIG

15 shows a further embodiment of a circular comb unit of a

Combing machine with a circular comb, a tear-off segment and a tangentially tensioned attachment of the circular comb and the tear-off segment on a shaft provided fastening mechanism in a plan view of an axial end face.

Corresponding parts are provided in FIGS. 1 to 15 with the same reference numerals. Also details of the embodiments explained in more detail below may constitute an invention in itself or be part of an inventive subject matter.

In Fig. 1 to 3, a first embodiment of a circular comb unit 1 of a combing machine for combing textile fibers is shown. The

Circular comb unit 1 comprises a circular comb 2, a fastening mechanism 3 and a shaft 5 rotatable about an axis of rotation 4. The axis of rotation 4 can also be understood in particular as the central longitudinal axis of the circular comb unit 1. With reference to the axis of rotation 4, a cylindrical coordinate system is defined with an axial direction z oriented along the axis of rotation 4, with a direction r oriented in the direction of distance from the axis of rotation 4, and with a tangential direction φ pointing circumferentially about the axis of rotation 4. The circular comb 2 is fixed on the rotatable shaft 5 by means of the fixing mechanism 3. The circle- The comb 2 comprises a circular comb base body 6 with an outer circumferential side 7 and an inner circumferential side 8 and a plurality of combing bars 9 with comb teeth 10 arranged on the outer circumferential side 7 in the exemplary embodiment shown, which meshes with the tuft of the textile fibers are. The combing bars 9 can be constructed differently. In particular, the comb teeth

10 of combing bars 9 have different shapes and distances and be present in different numbers. The tooth tips 11 of the comb teeth 10 have a rotation axis 4 called a combing radius KR distance. In addition, the tooth tips

11 spaced by a tip distance D from a lower edge of an upper nipper 12. The upper nipper 12 together with a lower nipper 13, a forceps unit 14 of the combing machine. By means of this forceps unit 14 of (not shown) tuft of the textile fibers to be combed is maintained. The more accurate and uniform the tip distance D is within the entire combing area of the circular comb 2, the closer the tooth tips 11 can be moved to the lower edge of the upper pair of pliers 12 and the better and more constant is the combing result which can then be achieved. The combing area of the circular comb 2 is defined by the entirety of the combing bars 9. The entirety of the combing bars 9 cover a combing circumferential angle segment KS which forms the active combing area and has, for example, a value of preferably 78 °, 90 °, 111 °, 137 ° or 180 °, but also other values from the range between 75 ° and 180 ° can accept. The tip distance D moves in particular in the range between 0.15 mm and 0.9 mm. The circular comb unit 1 and the associated circular comb 2 shown in FIGS. 1 to 3 are distinguished by a particularly exact, uniform and position-scattering combing radius KR, at least that of the radially farthest from the axis of rotation 4 Tooth tips 11 all combing bars 9, so that these tooth tips 11 in the circular comb unit 1 and in the below-described further circular comb units compared to conventional circular comb units advantageously by up to 0.2 mm in particular closer to the forceps unit 14 can be placed.

To achieve this, the circular comb 2 and in particular its Kjeiskamm base body 6 are designed in a special way. The circular comb main body 6 has defined both to the combing bars 9 and to a (here multi-part) mounting surface 15 of the mounting mechanism 3 and in particular singular contact surfaces.

The Kjeiskamm base body 6 has on its outer circumferential side 7 per combing bar 9 u.a. two outer contact strips 16 and 17, which extend in the axial direction z and are spaced apart in the tangential direction φ. Between the two outer contact strips 16 and 17 is a recess 18 with a radially projecting mounting lug 19. The outer contact strips 16 and 17 form Kämmriegel contact surfaces on which the combing bar 9 in question rests.

On the opposite inner circumferential side 8 of the circular comb main body 6 is also provided with contact strips, namely per combing bar 9 with the inner contact strips 20, 21 and 22. These inner contact strips 20-22 also extend axially in the direction of the axis of rotation 4, jump radially inward, ie So in particular in the direction of the axis of rotation 4, before and are spaced tangentially by recesses 23 from each other. The inner contact strips 20-22 are formed by projections on the inner peripheral side 8. Within the combing area defined by the totality of all combing bars 9, they constitute the only contact surfaces of the Kjeiskamm Gmndkörpers 6 to the mounting surface 15 of the provided for attachment to the shaft 5 mounting mechanism 3. In this respect, these inner contact strips 20-22 form Wellenmontage contact surfaces. As the attachment mechanism 3 is interposed, the inner contact strips 20-22 serve to indirectly connect to the shaft 5. In other embodiments realized without a fastening mechanism 3 or having another attachment mechanism, the inner contact strips 20-22 may also be directly on the shaft 5 and thus form a direct connection with the same. In these alternative embodiments, the circumferential surface of the shaft 5 then forms the mounting surface on which the circular comb main body rests with its inner peripheral side 8.

As can be seen from the enlarged illustration according to FIG. 3, in the mounted state between the inner contact strips 20-22, due to the depressions 23, hollow or intermediate spaces are formed which separate the inner contact strips 20-22 from one another. These spaces are non-contact. In the area of these interspaces no contact takes place between the Kjeiskamm base body 6 and the opposite mounting surface 15th

Pro Kämmriegel 9 are in the embodiment of FIG. 1 to 3, the two outer contact strips 16, 17 two of the inner contact strips 20-22, namely the inner contact strips 20, 21 assigned. The outer contact strip 16 and the associated inner contact strip 20 and the outer contact strip 17 and the associated inner contact strip 21 each form a pair of strips 24 and 25. The outer contact strip 16 and its associated inner contact strip 20 of the strip pair 24 are opposite each other. They overlap in their respective tangential Expansion at least partially. The same applies to the outer contact strip 17 and the inner contact strip 21 of the second strip pair 25. In particular, the Kjeiskamm base body 6 has in the area of the strip pairs 24, 25 a material connection or bridge extending in the radial direction r between those on the outer peripheral side 7 and on the inner peripheral side 8 provided contact surfaces to the combing bars 9 and the mounting surface 15. The radial distances dj and d ₂ between these outer and inner contact surfaces of the circular comb main body 6 can be set and finished very accurately. This is true even if the Kjeiskamm base body 6 as in the embodiment shown as aluminum extruded profile, which is anodized, inter alia, for curing purposes. Thus, the circular comb main body 6 shown is a cheap to manufacture component, but at the same time with the opposite outer contact strips 16, 17 and inner contact strips 20, 21 of the strip pairs 24, 25 over highly accurate radial distance dimensions dj, d ₂ has. In the embodiment shown, the spacing dimensions d _{1 5} d ₂ each have a value of between 4 mm and 8 mm, in particular between 5 mm and 7 mm, and preferably about 6 mm.

The inner contact strips 22 provided in addition to the inner contact strips 20, 21 of the strip pairs 24, 25 are optional. They cause an additional support function. The two strip pairs 24, 25 are each an edge strip pair, which is arranged in each case close to a tangential latch edge 26 or 27. The tangential distance φι of the strip pair 24 from the bolt edge 26 and the tangential distance φ ₂ from the bolt edge 27 are each Weil smaller than a tangential distance φ ₃ between the two pairs of strips 24, 25th

In the enlarged section of FIG. 4, a further embodiment of a circular comb unit 28 with a circular comb 29 is shown. The circular comb 29 comprises a circular comb basic body 30 which is slightly modified in relation to the Kjeiskamm main body 6 of the circular comb unit 1. Thus, surface areas 31 are provided on the outer circumferential side 7, against which tangentially successively arranged combing bars rest. These unitary surface areas 31 then represent two outer contact strips 32, 33, although at the border between the adjacent Kämmriegeln 9 between the outer contact strips 32, 33 no structural delimitation within the respective surface area 31 is present. In principle, however, such a structural demarcation between the outer contact strips 32 and 33 could be provided in another embodiment not shown here.

On the inner circumferential side 8 of the Kjeiskamm basic body 30, in addition to the inner contact strips 22 already provided at the Kjeiskamm main body 6, double-acting inner contact strips 34, which in turn are designed as projections, are arranged. Between the inner contact strips 22 and the double-acting inner contact strips 34 are the recesses 23, whereby a structural separation is given. The inner contact strip 34 is the outer contact strip 33 of the Kämmrie- gel 9 and at the same time the outer contact strip 32 of the adjacent

Kämmriegels 9 opposite and is these two outer contact strips 32, 33 also assigned. In this respect, each inner contact strip 34 is involved in two pairs of strips 35, 36. In turn, with the pairs of strips 35, 36, in each case, very precise radial distance dimensions d ₃ and d ₄ for the abrading Stands between the on the outer circumferential side 7 and the inner peripheral side 8 of the Kjeiskamm base body 30 existing contact surfaces to the combing bars 9 and the mounting surface 15 is formed. By means of the circular comb units 1 and 28, the tooth tips 11 can be positioned very uniformly, ie with essentially the same combing radius KR, and very precisely.

In the following, different possibilities for the tangentially tensioned fixation of the circular combs 2 and 29 on the shaft 5 are explained with reference to FIGS. 5 to 7 and partly also with reference to FIG.

The illustration of FIG. 5 corresponds to an enlarged section of the image of the circular comb unit 1 according to FIG. 1, wherein additionally the components concealed behind a holding body 37 are also shown in dashed lines. These hidden components are as well as the holding body 37 and the support member 37 partially formed by the mounting surface 15 components of the mounting mechanism 3. The Kjeiskamm base body 6 includes for its attachment to the shaft 5 and for connection to the shaft 5 fasteners that at the embodiment shown in Fig. 5 as integrally formed on the inner peripheral side 8 at the two tangential body margins 38 and 39 and inwardly projecting Zugbefestigungsvorsprünge 40 and 41 are formed. The Zugbefestigungsvorsprünge 40, 41 are undercut and have obliquely to the point of the deepest undercut tapered engagement surfaces 42, 43rd The attachment mechanism 3 has attachment countermeasures which cooperate with the attachment bosses 40, 41 of the main body 6 in the mounted state, so that the circular comb main body 6 is subjected to a tangential tensile force. In the embodiment shown in FIGS. 1, 2 and 5, these attachment counter means comprise a fixed bearing 44 and the other pivot bearing 45. According to the longitudinal side view shown in Fig. 2, the attachment mechanism 3 in the embodiment shown comprises a total of three identically constructed subunits 46, 47 and 48, each containing a fixed bearing 44 and a pivot bearing 45. Each of these subunits 46, 47. 48 has two upper support body 37, which together form the multi-part mounting surface 15, on which the Kreiskamm- Grundkörp 6 he rests in the manner described above with its inner contact strips 20-22. The holding body 37 are designed as holding plates whose mounting surface 15 forming the narrow side has the shape of a cylinder segment. The plate-shaped holding body 37 are executed in the embodiment shown as aluminum injection-molded or aluminum die-cast components, resulting in a low weight results. The mounting surface 15 forming cylinder-segment-shaped narrow sides of the holding body 37 are made precision and dimensionally stable. In addition to the upper holding bodies 37 also turn plate-shaped lower holding body 49 are also provided, which are screwed within the respective sub-units 46, 47, 48 with the respectively associated upper holding bodies 37. The holding bodies 37 and 49 each have an approximately semicircular recess intended to receive the shaft 5. At the holding bodies 37 opposite lower sides of the lower holding body 49, a counterweight 50 is arranged for mass balance. The illustration according to FIG. 2 shows a partially assembled state of the circular comb unit 1. The three partial units 46-48 of the fastening mechanism 3 shown in the lower part of the figure are covered in the case of complete assembly. This cover is omitted in Fig. 2 in order to better recognize the details of the fastening mechanism 3 can.

The two to one of the sub-units 46-48 associated upper and lower holding body 37 and 49 are axially spaced from each other, but in particular in each case connected to each other. Preferably, this compound is in one piece, e.g. by means of a narrow connecting web, formed. In the space formed thereby, the mechanism for connecting the upper and lower holding bodies 37, 49, and the components and mechanisms of the fixed bearing 44 and the pivot bearing 45 are housed.

The fixed bearing 44 comprises a between the two upper support members 37 of the respective of the sub-units 46-48 axially extending and supported by these two upper support body 37 mounting rod 51 having a laterally projecting at an upper edge fastening tab 52, the one to the oblique engagement surface 42 of the mounting projection 40th corresponding oblique engagement mating surface 53 has. In the assembled state, the fastening lug 52 engages in the undercut of the Zugbefestigungsvorsprungs 40, wherein the engagement surface 42 and the engagement counter surface 53 abut each other. The oblique course of these two surfaces 42, 53 causes the circular comb main body 6 is additionally pressed in the radial direction r against the mounting surface 15 with increasing acting on him tangential tension. The same engagement mechanism is present at the pivot bearing 45 at the other Zugbefestigungsvorsprung 41 of the Kjeiskamm base body 6. The pivot bearing 45 comprises a tie rod 55, which is pivotably mounted about a pivot axis 54 and has at its front end a tie rod nose 56 with an in turn oblique engagement counter face 57. The engagement counter surface 57 is in the mounted state on the engagement surface 43 of the Zugbefestigungsvorsprungs 41 at. In addition, an adjusting screw 58 is present, by means of which the pivot position of the tie rod 57 can be adjusted. The set screw 58 is mounted in a passage bore of a rotatably mounted support shaft 59.

By means of the adjusting screw 58, the force by means of which the tie rod 55 presses against the fastening projection 41 of the Kjeiskamm base body 6, continuously changed and adjusted according to the desired specifications. As a result, the Kjeiskamm basic body 6 is subjected to an adjustable tangential tensile stress. An acting on the circular comb main body 6 in the embodiment of FIGS. 1, 2 and 5 caused by the tie rod 55 tangential tensile force Fj is an oppositely oriented magnitude equal and applied by the bearing 44, 45 counter-holding force F ₂ . The tensile force Fi, which acts equally on the Kjeiskamm main body 6 at each circumferential position, leads to a (slight) elongation of the circular comb main body 6 in the tangential direction φ and to a close nestling of the Kjeiskamm main body 6 to the mounting surface 15, so that any in the course of time the manufacturing process unintentionally incurred tensions or twists or diameter tolerances of the Kjeiskamm base body 6 can be compensated. This compensation is particularly possible because the circular comb main body 6 is not completely over the entire surface, but only singularly by means of the at its Innenumfangs- page 8 arranged inner contact strip 20-22 rests against the mounting surface 15. On the other hand, at least the two inner contact strips 20, 21 associated with the strip pairs 24, 25 are provided as contact surfaces per combing bar 9, so that the (radial) position of each combing bar 9 and thus of all tooth tips 11 is also exactly defined, and in particular for a large applied tensile stress , The tooth tips 11 have compared to the theoretical specifications of the design documents after the practical implementation, ie after mounting on the shaft 5, a very high positional fidelity.

The tangential tension or tensile force Fj leads in connection with the close nestling of Kjeiskamm base body 6 to the mounting surface 15 advantageously also acting on the circular comb main body 6 radially inwardly directed contact force, so that in particular the fastening lug 19 pulled inward and is pressed against a corresponding retaining projection 19a of the respective Kämmriegels 9. This force exerted by the fastening lug 19 on the retaining projection 19a can preferably be so great that separate other fastening means, such as e.g. Fixing strips and / or screws, for fastening the combing bolts 9 on the

Kjeiskamm base body 6 can be omitted. This results in assembly and cost advantages. This aspect also represents a separate invention in its own right. FIGS. 6 and 7 show other exemplary embodiments for acting on a Kjeiskamm main body with a corresponding tangential tensile stress. In the exemplary embodiment of a correspondingly modified circular comb unit 60 shown in FIG. 6, a Kieiskamm main body 61 with differently configured attachment means is shown. At the tangential body edge 38, the Kjeiskamm base body 61 is provided with the inner side of the 8 inwardly projecting Zugbefestigungsvor- jump 40, which is part of a fixed bearing 62. The corresponding attachment countermeasures 62, which are likewise associated with this bearing 62, of a fastening mechanism 63 provided for attachment to the shaft 5 in this exemplary embodiment comprise a retaining block 64 engaging in the undercut of the fastening projection 40 and at least one retaining screw 65, by means of which the circular comb main body 61 and the Retaining block 64 are bolted together and to a holding body 66 of the fastening mechanism 63. The holding body 66 may in turn be designed as a relatively narrow component, with a sufficient thickness for receiving a threaded bore is provided. Alternatively, the holding body 66 can also have a greater extent in the axial direction z, in particular over the entire axial length of the circular comb unit 60. At the other tangential basic body edge 39 of the circular comb main body 61, a tension bearing 67 is placed. At least one body-threaded bore 68 is provided on the tangential body edge 39 and extends from the radial boundary surface on this tangential body edge 39 as a blind hole into the material of the circular comb body 61. This at least one base hole tapped hole 68 thus constitutes a fastening means of the Kjei trunk body 61. As a corresponding fastening counterpart means, the fastening mechanism 63 comprises a lag screw anchoring block 69 and at least one projection provided in the lag screw anchoring block 69. The through-bolt anchoring block 69 extends outside the combing area from the mounting surface 15 of the holding body 66 radially outward. It is suitably attached to the holding body 66.

The Kjeiskamm base body 61 can be acted upon by more or less screwing the fastening screw 71 into the main body threaded bore 68 with the desired tangential tensile stress or tensile force Fj.

FIG. 7 shows a further exemplary embodiment of a circular comb unit 72 with a circular comb main body 73 and a fastening mechanism 74 provided for fastening on the shaft 5. The fastening mechanism 74 comprises a holding body 75, which is similarly designed as the holding body 66 of the circular comb unit 60 according to FIG. 6. In particular, this holding body 75 has a sufficient axial thickness to threaded bores 76, 77 for screwing in Zugbefestigungsschrauben 78 and 79th take. In Kjeiskamm basic body 73 are in the area of two tangential

Base body edges 38 and 39 respectively through holes 80 and 81 are present, which widen conically towards the outer peripheral side 7 and at least in this outer region have the shape of a conical seat.

The existing in the holding body 75 threaded bores 76 are spaced by a Haltekö er-circumferential angular distance from the threaded holes 77 which is larger, at least in the unmounted state than a basic body-circumferential angle distance to the in the Kreiskamm- Main body 73 existing through holes 80 on the one hand and 81 on the other hand are spaced apart. The through holes 80 on the one hand and 81 on the tangential edge regions of the circular comb main body 73, on the other hand, are tangentially closer to one another in the unmounted state than the corresponding threaded bores 76 on the one hand and 77 on the other hand.

The Kjeiskamm base body 73 is fastened to the mounting surface 15 of the holding body 75 by means of the tension fastening screws 78, 79 inserted through the through-holes 80, 81 and screwed into the threaded bores 76, 77.

The tension fastening screws 78, 79 each have a conical head 78a, 79a, which is placed in the assembled state in the conical part of the through-holes 80, 81. The further the Zugbefestigungsschrauben 78, 79 are screwed into the threaded holes 76, 77, the deeper are the conical heads 78a, 79a of the Zugbefestigungsschrauben 78, 79 within the conical seats of the through holes 80, 81 and the greater the tangential tension or tensile force Fi thereby exerted on the Kjeiskamm main body 73.

The inner circumferential surface of the conical region of the through-bores 80, 81 thus form in each case obliquely with respect to the radial direction r and also with respect to the tangential direction φ extending fastening contact surfaces. Accordingly, the outer peripheral surfaces of the conical heads 78a, 79a of the tightening screws 78, 79 are anti-mating surfaces also inclined with respect to the radial direction r and to the tangential direction φ. These surfaces In other words, other embodiments for the tangentially tensioned attachment of a circular comb or its circular comb main body to the shaft 5 are also conceivable. In particular, combinations of the above-described fastening variants are possible. FIGS. 8 and 9 show an exemplary embodiment of a further circular comb unit 82 having a circular comb 83 and the fastening mechanism 3 already explained with reference to FIGS. 1, 2 and 5. The circular comb 83 has a circular comb main body 84. In contrast to the previously discussed Kjeiskamm basic bodies 6, 30, 61 and 73 of the Kjeiskamm base body 84 has on its inner peripheral side 8 no projections. On the contrary, the inner circumferential side 8 is designed as a smooth cylindrical-segment-shaped inner circumferential surface 85 which is concentric with the axis of rotation 4. For this purpose, the mounting surface 86 which is intended to bear against this cylinder-segment-shaped circumferential surface 85 of the Kieiskamm main body 84 has radially outwardly projecting and tangentially spaced-apart contact projections 87, 88, 89. Between each of the tangentially adjacent contact protrusions 87-89 there is a recess 89a, which also structurally separates the respective tangentially adjacent contact protrusions 87-89 from one another.

The mounting surface 86 is in turn made of several parts and formed by the plate-shaped holding body 37. In addition to the contact projections apparent from the enlarged detail view according to FIG. gen 87-89 there are axially spaced at the same tangential positions further corresponding contact projections 87-89 of the further axially spaced and apparent from the illustration of FIG. 2 holding body 37. All axially aligned, spaced-contact contact protuberances 87 and 88 bzw. 89 thus form contact projection rows 90, 91 and 92, respectively.

The contact projections 87-89 of all holding bodies 37 in the mounted state form the only contact surfaces to the inner circumferential surface 85 of the Kjeiskamm base body 84th

The outer contact strips 16, 17, which are also provided in the Kjeiskamm base body 84 for fitting the combing bars 9, are assigned to the contact projection rows 90 and 91, respectively. The outer contact strip 16 and the contact projection row 90 are in turn at the same or at least an overlapping tangential position, as well as the outer contact strip 17 and the contact projection row 91. Therefore, there are substantially the same advantages in terms of the exact positioning of the tooth tips 11th as described above in the embodiment of the circular comb unit 1. The outer contact strips 16 are each assigned to one of the contact projection rows 90, whereby in each case a strip / V pair of jumpers 93 is formed. Likewise, the outer contact strips 17 are each assigned to one of the contact projection rows 91, whereby in each case a strip / projection pair 94 is formed.

As with the circular comb unit 1, there are similar alternative embodiments to the circular comb unit 82. According to the embodiment of such an alternative circular comb unit 95 shown in FIG. 10 with a circular comb main body 96 are similar to the circular comb unit 28 combined or double-acting contact projections 97 and formed therefrom combined or double-acting contact projection rows 98 provided on the mounting surface 86. The Kontaktvorsprungreihen 98 form each with one of the outer contact strip 33 of the Kreiskamm- base body 96 each strip / V orsprungpaar 99 and each with one of the outer contact strip 33 each a strip / projection pair 100. The mode of action and in terms of the benefits to the statements referenced to the circular comb unit 28 of similar construction.

The above explained for the circular comb units 1, 28, 60 and 72 mechanisms for tangentially tensioned attachment of the relevant Kjeiskamm base body 6, 30, 61 and 73 on or on the shaft can be used in the same manner in the circular comb units 82 and 95. Their circular comb basic bodies 84 and 96 are also advantageously subjected to a tangential tensile stress in the installed state, thereby compensating any mechanical torsions or distortions or diameter tolerances of the Kiei core bodies 84 and 96 and thus achieving a very precise and positionally correct position at least To ensure radially furthest away from the axis of rotation 4 tooth tips 11 all Kämmriegel 9.

FIG. 11 shows a further exemplary embodiment of a circular comb unit 101 of a combing machine for combing textile fibers. The circular comb unit 101 also comprises a circular comb 102 and a fastening mechanism 103, by means of which the circular comb 102 is fastened on the shaft 5, not shown in FIG. 11, under the action of a tangential tensile stress or tensile force Fj. The circular comb 102 has a similar construction to that of the circular comb unit 60 according to FIG. 6. This applies in particular to the actual combing bars 9, but also to a circular comb basic body 104 on the outer circumferential side 7 of which the combing bars 9 are releasably attached as in the above-described circular comb units 1, 28, 60, 72, 82 and 95. In the embodiment shown in FIG. 11, a total of six combing bars 9 are present. On the inner circumferential side 8 of the circular comb main body 104, the three radially inwardly projecting inner contact strips 20, 21 and 22 are again present per Kämmriegel 9, which within the Kämmbereichs the only contact surfaces of the Kjeiskamm base body 104 to the multi-part and concentric in this embodiment too Rotary axis 4 arranged mounting surface 15 of the attachment mechanism 103 form.

To attach the Kjeiskamm base body 104 and thus also of the circular comb 102 as a whole on the shaft 5 and for loading the Kjeiskamm base body 104 with the desired tangential tensile force Fj Kjeiskamm base body 104 has integrally formed on its first tangential body edge 38 and on the In this case, there is a difference to the Kjeiskamm basic bodies 6 and 84, in which the Zugbefestigungsvorsprünge 40, 41 projecting in each case on the inner circumferential side 8 inwardly. At its second tangential basic body edge 39, the Kieiskamm basic body 104 is provided with a likewise integrally formed threaded extension 106, which is equipped with the at least one main body threaded bore 68 which extends from the radial boundary surface as a blind hole in the material of the Kjeiskamm- Base 104 extends. This at least one base threaded hole 68 as well as the outwardly projecting Zugbefestigungsvorsprung 105 each have a fastening means of 104, which are designed to act on the circular comb main body 104 in the mounted state on the shaft 5 with a tangential tensile force Fi. Also, the main body threaded bore 68-containing threaded extension 106 of the circular comb main body 104 is such a fastener.

In contrast to the attachment mechanisms 3, 63 and 74 described above, a counterweight 107 is included in the attachment mechanism 103. This designed as a separate component counterweight 107 is in particular a block of material which extends continuously in the axial direction. For attachment to the shaft 5 screw by means of several shaft mounting screws 108 are available. These screw connections represent a first partial fastening of the counterweight 107 on the shaft 5. The shaft 5 not shown in FIG. 11 has through-holes through which these shaft fastening screws 108 are inserted. The counterweight 107 is arranged essentially on the side of the shaft 5 opposite the combing area. Further components of the fastening mechanism 103 are the mounting surface 15 forming (upper) holding body 109, which substantially correspond to the holding bodies 37, 66 and 75 described above, and two configured as hollow profiles retaining clips 110 and 111. The retaining clips 110, 111 are by means of two retaining pins 112 pivotally mounted on the counterweight 107, in particular, in each case only a limited pivotability is given. The retaining clip 110 terminates in a hook-shaped manner at the upper end facing away from the fastening point on the counterweight 107, as a result of which a clip nose 13 is formed, which engages in an undercut of the tensile fastening projection 105. As described above with reference to FIG. 5, also in this exemplary embodiment, an oblique engagement surface 42 is present on the tension fastening projection 105 due to the undercut, and a corresponding oblique engagement counter surface 53, which abuts against one another, is present on the clip nose 113.

The second retaining clip 1 11 is designed differently than the first retaining clip 1, in particular at its upper end remote from the fastening point on the counterweight 107. It comprises at this upper end a transverse strut 114, which is provided with through-holes 115. Through these through holes 1 15 are similar to the described in Fig. 6 embodiment of the circular comb unit 60 Zugbefestigungsschrauben 71 inserted through to screw them into the main body threaded bore 68 in the threaded extension 106 of the circular comb main body 104. The transverse strut 114 of the retaining clip 111 corresponds to the Zugschraubenverankerungsblock 69 of the circular comb unit 60 shown in FIG. 6. The cross strut 114 can also be understood as such Zugschraubenverankerungsblock. By correspondingly wide screwing the Zugbefestigungsschrauben 71 into the threaded extension 106 of the circular comb 102 and in particular its circular comb base body 104 is acted upon by the desired tangential tensile force Fj.

At the same time, because of this connection of the counterweight 107 with the circular comb 102 via the two retaining clips 110 and 11, clamping of the counterweight 107 on the shaft 5 results. This clamping constitutes a second partial fastening of the counterweight 107 on the shaft 5. To its attachment to the shaft 5 so in particular for a screw and on the other the illustrated clamp connection are available. In an alternative, not shown, tive embodiment is dispensed with the screw. It is then especially exclusively the clamp connection available.

The circular comb unit 101 or its attachment mechanism 103 comprises attachment countermeasures, which cooperate with the abovementioned attachment means in such a way that the desired application of tensile force to the Kiei body base 104 is established. The attachment countermeasures are, in particular, the retaining clip 110 with the clip nose 113, the retaining clip 11 1 with the transverse strut 114 and the through bores 115 contained therein, as well as the tension fastening screws 71.

FIG. 12 shows a further embodiment of a circular comb unit 116 of a combing machine for combing textile fibers. The circular comb unit 1 16 comprises a circular comb 117 and a fastening mechanism 118 for zugkraftbeaufschlagten attaching the circular comb 117 to the in Fig. 12 also not shown shaft 5. The circular comb 117 includes a Kjeiskamm base 119, on the outer peripheral side 7 more (in the illustrated embodiment Six) combing bars 120 are glued. In this respect, therefore, the attachment of the combing bars 120 to the Kjeiskamm base body 119 differs from the previously described embodiments.

Another sub-push is that neither on the inner peripheral side 8 of the Kjeiskamm base body 119 nor on the mounting surface 15 of the fastening mechanism 118, a textured surface contour is present. So it lacks contact strips or contact projections. Instead, the inner circumferential side 8 of the Kjeiskamm basic body 1 19 is designed as a purely cylindrical segment-shaped surface. The same applies to the (Again multipart and concentric with the axis of rotation 4 arranged) mounting surface 15. The Kjeiskamm base body 1 19 is afflicted in the unmounted state with the usual manufacturing tolerances. In order nevertheless to ensure the desired very accurate and positionally correct positioning of the tooth tips 1 1 of all combing bars 120, the circular comb basic body 1 19 is acted upon in the mounted state with a particularly high tangential tensile force F ₃ . This Zugkraftbeaufschlagung is so high that the Kjeiskamm base body 1 19 elastically deformed. The caused by this tangential tensile force F ₃ stress load of the filament in this embodiment designed as an aluminum extruded extrusion profile circular comb main body 1 19 is in particular about 50% of the yield strength of the aluminum material used.

In Fig. 13 is an enlarged section of the circular comb unit 1 16 in not yet finally mounted state, in particular not yet zugkraftbeaufschlemem circular comb main body 1 19, is shown. On the inner circumferential surface 8 of the Kjeiskamm main body 1 19 there is an inexplicably illustrated manufacturing inaccuracy, which results in a deviation of the inner peripheral surface of the circular comb main body 1 19 from the desired exact cylinder-segment-shaped geometry.

The Kjeiskamm basic body 1 19 on its inner peripheral side 8 a zy- lindersegmentförmige inner peripheral surface with an inner radius R ;. On the basis of an ideal production, this inner radius would be exactly the same everywhere and would assume the internal wheel target value R _is everywhere. In practice, however, there are no such ideal conditions. The inner radius Ri is subject to production-related local fluctuations. The actual value of the inner radius Ri depends on the tangential and axial len location coordinates φ or z. This position dependence can be described by the function _{expression R 1} (p, z) In FIG. 13, for four different tangential positions φ _5, φ ₂ , φ ₃ and φ _{4, the} axial _{radii R z} are the same for each respective axial position z _0. cpi, z ₀ ), Ri (cp ₂ , z ₀ ), Ri (cp ₃ , z ₀ ), and R; ((p ₄ , z ₀ ). These local inner inner radii Ri (cpi, z ₀ ), Ri (cp ₂ , z ₀ ), Ri (cp ₃ , z ₀ ), and R; ((p ₄ , z ₀ ) are clearly different from each other, because of the mentioned manufacturing tolerances In the embodiment shown, the local radius variations are within ± _. φι 0.5% of the inner radius reference value R _is at the tangential position is the local internal radius Ri (cpi, z ₀₎ exactly equal to the inner radius setpoint R; _S φ on the other tangential positions ₂ φ _3, and φ _4, there are, however, production-related deviations of the internal wheel target value R _is. These manufacturing inaccuracies cause the circular comb basic value In any case, body 119 initially does not abut as desired on the mounting surface 15 of the fastening mechanism 118. By applying the high tangential tensile force F ₃ but the Kjeiskamm base body 119 is so far elastically deformed that even the production due to the exact cylinder segment geometry deviating areas of the inner peripheral surface of the Kjeiskamm base body 119 are pressed against the mounting surface 15 and then in final assembly state also present. According to the enlarged triangle of forces shown in FIG. 13, the high tangential tensile force F _{3 is divided} into a radial force component F _{res r} and a tangential force component F _{res φ} . The radial component force F _res _ _r effected while the (elastic) Anpres- solution also the faulty areas of the inner peripheral surface of the circular comb main body 119 to the mounting surface 15 °. In the embodiment of the circular comb unit 116 according to FIGS. 12 and 13, a purely cylindrical-segment-shaped inner peripheral surface is provided on the inner circumferential side 7 of the Kieiskamm main body 119. However, there are also not shown alternative embodiments in which this inner peripheral surface of the associated Kjeiskamm base body has a textured surface contour, and is equipped for example with contact strips. By this structuring, it is then achieved, in particular, that the elastic deformation of the relevant circular comb main body takes place, at least for the most part, on design-dictated and thus defined points. As a result, a standardization of the material load can be achieved. In this respect, it is therefore also possible in particular for a correspondingly high tangential tensile force F _{3 to be} applied to the respective circular comb units 1, 28, 60, 72, 82, 95 and 101 in order to secure the respective Kjei core body 6, 30, 61, 73 , 84, 96 and 104, at least in the final assembled state also elastically deform and thereby achieve the very accurate and positionally true position of the tooth tips. Apart from the high tensile force application, the circular comb unit 116 also has a few further differences in the case of the fastening mechanism 118 compared with the circular comb unit 101. Also, the attachment mechanism 118 includes a counterweight, wherein the counterweight is formed in the attachment mechanism 118 as an integral part of a combined clip counterweight body 121. This clamp counterweight body 121, like the counterweight 107 of the circular comb unit 101, is fastened in particular in two ways to the shaft 5, again preferably by means of screw connections and a clamping connection. The clip counterweight body 121 is as a hollow profile, in particular as a extruded-hollow profile, designed, which extends continuously in the axial direction of the circular comb unit 116.

At the first tangential basic body edge 38, the circular comb basic body 1 19 is designed substantially in the same way as the circular comb basic body 104. It has an outwardly projecting tensile fastening projection 105. Correspondingly, a clip portion 122 of the clip counterweight body 121 is provided at its outer edge with a clip nose 113, which engages in the mounted state on Zugbefesti- gungsvorsprung 105 of the circular comb main body 119.

At the second tangential base edge 39 of the circular comb main body 119, however, another mechanism for Zugkraftbeaufschlagten attachment of the Kjeiskamm-Gnmdkörpers 119 is provided, namely an eccentric mechanism. For this purpose, a plurality of axially arranged one behind the other receiving eyelets 123 are integrally formed on the second tangential body edge 39 of the Kjeiskamm body 119. Correspondingly, an eccentric portion 124 of the clamp counterweight body 121 facing this second tangential counter body edge 39 in the assembled state has a plurality of receiving counterbores 125 also formed integrally on the clamp counterweight body 121 and molded axially one behind the other. In the assembled state, the receiving eyelets 123 and the receiving eyelets 125 are arranged interlocked. In the axial direction, one of the receiving eyelets 123 of the Kjeiskamm-Gnmdkörpers 119 alternates with one of the receiving Gegenösen 125 of the eccentric 124 from each.

The receiving eyelets 123 each have an eyelet passage opening 126, the receiving eyelets 125 each have a counter eyelet passage opening 127. According to the enlarged view of XIV indicated in FIG. 12, as shown in FIG. 14, the eyelet passages 126 and the eyelet passages 127 at least partially overlap in the assembled state. For assembly, an eccentric tension rod 128 is inserted through the eyelet passage openings 126 and the counter-eyelet passage openings 127 in its non-exciting transverse position. By a corresponding rotational movement about its longitudinal axis of the eccentric tension rod 128 is brought into its exciting longitudinal position, whereby the Kjeiskamm base body 1 19 and the staple Gegengewi cht body 121 moved towards each other or are pulled towards each other, and the degree of overlap of the eyelet through holes 126 and the counter-eye passage openings 127 is increased. Here, the Kjeiskamm base body 119 is acted upon by the high tangential tensile force F ₃ . The circular comb basic body 119 thus also has fastening means with the outwardly projecting tensile fastening projection 105 and the receiving eyes 123, which are designed to act on the Kjeiskamm main body 119 in the state mounted on the shaft 5 with the high tangential tensile force F ₃ . For the same purpose, there are corresponding countermeasures for co-operation with these fasteners. The latter are, in particular, the clamp portion 122 with the clamp nose 113, the eccentric portion 124 with the receiving counterbores 125, as well as the eccentric tension rod 128, which is rotatable and releasably inserted about its longitudinal axis.

To disassemble the circular comb 117 of the eccentric tension rod 128 is first rotated back into its non-exciting transverse position, whereby the tensile load in the circular comb main body 119 disappears. The eccentric tension rod 128 can then be easily removed from the eyelet Pull out through holes 126 and the counter-eye through holes 127. After loosening and removing the shaft mounting bolts 108, the clip counterweight body 121 and then also the circular comb 1 17 can be removed.

FIG. 15 shows a further exemplary embodiment of a circular comb unit 129 of a combing machine for combing textile fibers. It comprises the substantially identical circular comb 2 and the likewise essentially identical attachment mechanism 3 of the circular comb unit 1 according to FIGS. 1 to 5. On the side of the shaft 5 opposite the combing region, the circular comb unit 129 additionally comprises a tear-off segment 130 with a substantially cylindrical segmental shape The tear-off segment 130 is fastened to the shaft 5 by means of a second fastening mechanism 132. This second attachment mechanism is essentially the same as the first attachment mechanism 3 provided for fastening the circular comb 2. The two attachment mechanisms 3 and 132 are screwed together so that a clamping connection is made on the shaft 5. If required, an optional additional screw connection with the shaft 5 can be provided.

Due to the identical design of the attachment mechanism 132 and the tear-off segment 130 is attached to the shaft 5 under application of a tangential tensile force F ₄ . As in the case of the circular comb base body 6, the tangential tensile force F ₄ caused by the tie rod 55 of the fastening mechanism 132 also faces an oppositely oriented counter-holding force F _{5 of} equal magnitude and applied by the bearings 44, 45 of the fastening mechanism 132 in the tear-off segment 130. The tear-off segment 130, in cooperation with a tear-off roller 133 of the combing machine shown schematically in FIG. 15, serves for tearing off the combed fiber tuft. In this way, a second Abreißwalze can be saved. A combing machine operating on this principle, the so-called Heilmann principle, is described, for example, in WO 2010/012112 A1. It has been found that the fastening mechanism 3 provided here initially in connection with the traction-mounted attachment of the circular comb 2 can be used in substantially the same way and with the same advantages with respect to the positioning accuracy even when fastening the tear-off segment 130.

A small, but not significant difference to the circular comb unit 1 is that in the holding bodies 37 passage openings 134 are present. The passage openings 134 in the holding bodies 37 of the attachment mechanism 3 of the circular comb 2 remain unpopulated, whereas in the through holes 134 of the holding body 37 of the attachment mechanism 132 of the tear-off segment 130 can be used if necessary in Fig. 15 not shown counterweight.

The division of the circumferential area into a zone with combing function and another zone with a tear-off function can also be undertaken differently than in the case of the circular comb unit 129. Thus, there are alternative figuratively not shown embodiments of circular comb units with other circumferential divisions, which alternative circular comb units are also each intended for use in a functioning according to the Heilmann principle combing machine. In contrast to the circular comb unit 129 with a bipartition of the circumferential region, a In the case of such an alternative circular comb unit, a circumferential division into four zones with a combing function and two zones with a tear-off function is performed, the zones alternately changing in the circumferential direction. A zone with one function is always followed by a zone with the other function. A zone with combing function is followed by a zone with a tear-off function and vice versa. The zones each cover a circumferential angle range of approximately 90 °. In a zone with combing function, a circular comb is arranged in each case and a tear-off segment is arranged in a zone with a tear-off function. In principle, an even finer division of the peripheral area is possible.

Claims

Circular comb for a combing machine for combing textile fibers and for attachment to a shaft (5) of the combing machine which can be rotated about an axis of rotation (4).

a) a Kjeiskamm base body (6; 30; 61; 73) with an outer peripheral side (7) and an inner peripheral side (8),

b) several combing bars (9) arranged on the outer peripheral side (7) of the circular comb base body (6; 30; 61; 73), which in their entirety cover a combing circumferential angle segment and define a combing area of the circular comb (2; 29),

characterized in that

c) on the outer peripheral side

(7) of the Kjeiskamm base body (6;

30; 61; 73) per combing bar (9) there are at least two external contact strips (16, 17; 32, 33) which run axially in the direction of the axis of rotation (4) and are spaced apart tangentially with respect to the axis of rotation (4), the combing bar contact surfaces on which the respective combing bar (9) rests, form,

d) on the inner circumferential side

(8) of the Kjeiskamm base body (6; 30;

61; 73) there are internal contact strips (20, 21, 22; 34) which run axially in the direction of the axis of rotation (4), project radially inwards with respect to the axis of rotation (4) and are spaced apart tangentially with respect to the axis of rotation (4). which, at least within the combing area, form the only shaft mounting contact surfaces of the Kjeiskamm base body (6; 30; 61; 73) for direct or indirect contact with or connection to the shaft (5), whereby

e) at least some of the external contact strips (16, 17; 32, 33) are each assigned to one of the internal contact strips (20, 21; 34). and with this each form a pair of strips (24, 25; 35, 36), the outer contact strip (16, 17; 32, 33) and the inner contact strip (20, 21; 34) of each of the pairs of strips (24, 25; 35, 36) at least partially overlap in their tangential extent, and at least two pairs of strips (24, 25; 35, 36) are present per combing bar (9).

Circular comb according to claim 1, characterized in that per

Combing bars (9) each have exactly two pairs of strips (24, 25; 35 36).

Circular comb according to claim 1 or 2, characterized in that there are two pairs of strips (24, 25; 35, 36) designed as pairs of edge strips per combing bar (9), with each of the pairs of edge strips having a tangential distance (φ _{ΐ 5} φ ₂ ) of a tangential bar edge (26, 27) of the relevant comb bar (9) is in particular smaller than a tangential distance (φ ₃ ) between the two pairs of edge strips.

Circular comb according to one of the preceding claims, characterized in that at least in one of the pairs of strips (24) the outer contact strips (16) and the inner contact strips (20) are each arranged tangentially at the same position and have the same tangential extent.

Circular comb according to one of the preceding claims, characterized in that there is at least one internal contact strip (34) which is assigned to two external contact strips (32, 33) and thus also to two pairs of strips (35, 36), the two external contacts being clock strips (32, 33) each on different combing bars

(9) apply.

Circular comb according to one of the preceding claims, characterized in that the projections of the internal contact strips (20, 21; 34) have a radial projection height of between 0.25 mm and 5 mm, in particular between 0.5 mm and measured perpendicular to the axis of rotation (4). 2 mm, have.

Circular comb according to one of the preceding claims, characterized in that the circular comb base body (6; 61; 73) is equipped with fastening means (40, 41; 68; 80, 81) for fastening it to the shaft (5) and these fastening means ( 40, 41; 68; 80, 81) are designed to apply a tangential tensile force (Fi) to the Kjeiskamm base body (6; 61; 73) when it is attached to the shaft.

Circular comb according to claim 7, characterized in that the fastening means are at least partially designed as at least one tension fastening projection (40, 41) projecting inwards on the inner circumferential side (8), with in particular two tension fastening projections (40, 41) being present, one of which is preferably arranged at one of the two tangential ends (38, 39) of the circular comb base body (6).

Circular comb according to claim 7 or 8, characterized in that the fastening means (80, 81) are at least partially designed as at least one fastening contact surface, and a surface normal of the fastening, which is in particular designed as a conical surface, supply contact surface runs obliquely both to the radial direction relative to the axis of rotation (4) and to the direction tangential to the axis of rotation (4).

10. Circular comb according to one of claims 7 to 9, characterized in that the fastening means are at least partially designed as base body threaded bores (68) for screwing in tension fastening screws (71), the base body threaded bores (68) starting from a radial boundary - surface on at least one of the two tangential ends (39) of the

Kjeiskamm base body (61) extend in particular as blind holes into the Kjeiskamm base body (61).

11. Circular comb unit for a combing machine for combing textile fibers

a) a shaft (5) rotatable about an axis of rotation (4) and

b) a circular comb (2; 29) attached to the shaft (4) according to one of the preceding claims,

where

c) the circular comb unit (1; 28; 60; 72) for fastening the circular comb (2; 29) to the shaft (5) comprises at least one smooth cylindrical segment-shaped mounting surface (15) arranged concentrically to the axis of rotation (4), on which the internal contact strips ( 20, 21, 22; 34) of the Kjeiskamm base body (6; 30; 61; 73).

12. Circular comb unit according to claim 11 with a circular comb according to claim 7, characterized in that the fastening means (40, 41; 68; 80, 81) of the circular comb base body (6; 61; 73) with fastening counter-means (51; 54; 64, 65; 76, 77, 78, 79; 69, 71) the district comb unit (1; 60; 72) interact in such a way that the circular comb base body (6; 61; 73) is subjected to a tangential tensile force (Fj).

13. Circular comb unit according to one of claims 1 1 and 12 with a circular comb according to claim 8, characterized in that the

Circular comb unit (1) comprises a fastening mechanism (3) which comprises a tie rod (55) which represents a fastening counter-means and in particular can be pivoted about a pivot axis (54) and which acts with a tangential force against the at least one inwardly projecting tension fastening projection (41) of the circular comb unit (1). Base body (6) presses.

14. Circular comb unit according to one of claims 1 1 to 13 with a

Circular comb according to claim 9, characterized in that the

Circular comb unit (72) comprises a fastening mechanism (3), which comprises a fastening counter-contact surface which represents a fastening counter-means (78, 79) and rests against the fastening contact surface with a changeable contact position, and a surface normal of the fastening counter-contact surface, which is designed in particular as a conical counter surface, both in relation to the axis of rotation (4 ) radial direction as well as the tangential direction relative to the axis of rotation (4), whereby a tangential tensile force (Fi) acting on the circular comb base body (73) can be adjusted by means of the contact position.

15. Circular comb unit according to one of claims 1 1 to 14 with a

Circular comb according to claim 10, characterized in that the

Circular comb unit (60) comprises a fastening mechanism (3), which, outside the combing area, comprises a tension screw anchoring block (69) which extends radially outwards from the cylinder segment-shaped mounting surface (15), the tension screw anchoring block (69) having anchoring block through-holes (70) for receiving the tension fastening screws (71).

16. Circular comb unit for a combing machine for combing textile fibers comprising:

a) a shaft (5) rotatable about an axis of rotation (4),

b) a circular comb (83) attached to the shaft (5), comprising: bl) a circular comb base body (84; 96) with an outer peripheral side (7) and an inner peripheral side (8), which is concentric to the axis of rotation (4). arranged smooth cylindrical segment-shaped inner peripheral surface (85) is designed, and b2) several combing bars (9) arranged on the outer peripheral side (7) of the circular comb base body (84; 96), which in their entirety cover a combing circumferential angle segment and a combing area of the Determine circular comb (83), c) at least one mounting surface (86) arranged concentrically to the axis of rotation (4) with a substantially cylindrical segment-shaped basic shape,

characterized in that

d) on the outer peripheral side (7) of the circular comb base body (84;

96) per combing bar (9) there are at least two external contact strips (16, 17; 32, 33) which run axially in the direction of the axis of rotation (4) and are spaced apart tangentially with respect to the axis of rotation (4), the combing bar contact surfaces on which the respective combing bar (9) rests, form, e) the mounting surface (86) has contact projections (87, 88, 89; 97) which extend axially in the direction of the axis of rotation (4), project radially outwards with respect to the axis of rotation (4) and are spaced apart tangentially with respect to the axis of rotation (4). ), which form, at least within the combing area, the only partial surfaces of the mounting surface (86) with which the mounting surface (86) on the inner circumferential surface (85) of the circular comb base body (84; 96) for direct or indirect connection of the circular comb base body ( 84; 96) is in contact with the shaft (5), whereby f) at least some of the external contact strips (16, 17; 32, 33) of the Kjeiskamm base body (84; 96) are in each case either one of the contact projections (87, 88; 97) of the Mounting surface (86) or, if several contact projections (87, 88; 97) of the mounting surface (86) are axially aligned but spaced apart from one another as rows of contact projections (90, 91; 99, 100), one of these rows of contact projections (90, 91; 98) are assigned to the mounting surface (86) and the respective external contact strip (16, 17; 32, 33) with the assigned contact projection (87, 88; 97) or the assigned contact projection row (90, 91; 98) each form a strip/projection pair (93, 94; 99, 100), the external contact strip (16, 17; 32, 33) of the circular comb base body (84; 96) and the contact projection (87, 88; 97) of the mounting surface (86) or the contact projection row (90, 91; 98) of the mounting surface (86) of each of the strips - / projection pairs (93, 94; 99, 100) at least partially overlap in their tangential extent, and at least two strip / projection pairs (93, 94; 99, 100) are present per combing bar (9).

17. Circular comb unit according to claim 16, characterized in that exactly two strip/projection pairs (93, 94; 99, 100) are present per combing bar (9).

18. Circular comb unit according to claim 16 or 17, characterized in that there are two pairs of strips / projections (93, 94; 99, 100) designed as edge pairs per combing bar (9), with each of the edge pairs having a tangential distance from a tangential The bar edge of the relevant comb bar is in particular smaller than a tangential distance between the two pairs of edges.

19. Circular comb unit according to one of claims 16 to 18, characterized in that at least in one of the strip / projection pairs (93) the external contact strip (16) of the circular comb base body (84) and the contact projection (87) of the mounting surface (86) or the contact projection row (90) of the mounting surface (86) are each arranged tangentially at the same position and have the same tangential extent.

20. Circular comb unit according to one of claims 16 to 19, characterized in that there is at least one contact projection (97) or at least one row of contact projections (98) on the mounting surface (86), which is or are the two external contact strips (32, 33) of the circular comb -Base body (96) and thus also two strip/projection pairs (99, 100), the two external contact strips (32, 33) of the circular comb base body (96) each resting on different combing bars (9).

21. Circular comb unit according to one of claims 16 to 20, characterized in that the contact projections (87, 88, 89; 97) have a radial projection height of between 0.25 mm and 5 mm, in particular between 0, measured perpendicular to the axis of rotation (4). .5 mm and 2 mm.

22. Circular comb unit according to one of claims 16 to 21, characterized in that the circular comb base body (84) is equipped with fastening means (40, 41) for fastening it to the shaft (5) and these fastening means (40, 41) are designed so that the Kjeiskamm base body (84) is fastened tangentially on the shaft (5).

23. Circular comb unit according to claim 22, characterized in that the fastening means (40, 41) of the circular comb base body (84).

Fastening counter means (51; 54) of the circular comb unit (82) cooperate in such a way that the circular comb base body (84) is subjected to a tangential tensile force (Fi).

24. Circular comb unit according to claim 22 or 23, characterized in that the fastening means are at least partially designed as at least one tension fastening projection (40, 41) projecting inwards on the inner peripheral side (8), in particular two tension fastening projections (40, 41) being present are, one of which is preferably at one of the two tangential ends (38,

39) of the Kjeiskamm base body (84) is arranged.

25. Circular comb unit according to claim 24, characterized in that the circular comb unit (82) surrounds a fastening mechanism (3). which comprises a tie rod (55) which represents a fastening countermeasure and can in particular be pivoted about a pivot axis (54), which presses with a tangential force against the at least one inwardly projecting tension fastening projection (41) of the circular comb base body (84).

26. Circular comb unit according to one of claims 22 to 25, characterized in that the fastening means are at least partially designed as at least one fastening contact surface, and a surface normal of the fastening contact surface, which is in particular designed as a conical surface, both to the radial direction relative to the axis of rotation and to the direction relative to the Axis of rotation tangential direction runs obliquely.

27. Circular comb unit according to claim 26, characterized in that the circular comb unit comprises a fastening mechanism which comprises a fastening counter-contact surface which represents a fastening counter-means and rests against the fastening abutment surface with a changeable contact position, and a surface normal of the fastening counter-contact surface, which is designed in particular as a conical counter surface, also to both runs obliquely relative to the axis of rotation in the radial direction as well as to the direction tangential to the axis of rotation, with a tangential tensile force (Fi) acting on the Kjeiskamm base body being adjustable by means of the contact position.

28. Circular comb unit according to one of claims 22 to 27, characterized in that the fastening means are at least partially designed as base body threaded holes for screwing in tension fasteners. supply screws are formed, the base body threaded holes extending from a radial boundary surface on at least one of the two tangential ends of the circular comb base body, in particular as blind holes in the circular comb base body.

29. Circular comb unit according to claim 28, characterized in that the circular comb unit comprises a fastening mechanism which, outside the combing area, comprises a tension screw anchoring block which extends radially outwards from the mounting surface, the tension screw anchoring block having anchoring block through-holes for receiving the tension fastening screws. 30. Circular comb for a combing machine for combing textile fibers and for attachment to a shaft (5) of the combing machine which can be rotated about an axis of rotation (4).

a) a Kjeiskamm base body (6; 30; 61; 73; 84; 96; 104; 119) with an outer peripheral side (7) and an inner peripheral side (8), the Kjeiskamm base body (6; 30; 61; 73; 84; 96; 104;

119) is equipped with fastening means (40, 41; 68; 80, 81; 105; 106; 123) for attaching it to the shaft (5), and b) on the outer peripheral side (7) of the Kjeiskamm base body (6;

30; 61; 73; 84; 96; 104; 119) arranged combing elements (9; 120), which in their entirety cover a combing circumferential angle segment and define a combing area of the circular comb (2; 29; 83; 102; 117),

characterized in that c) the fastening means (40, 41; 68; 80, 81; 105; 106; 123) of the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) are designed to secure the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) when attached to the shaft with a tangential tensile force (Fi; F ₃ ).

31. Circular comb according to claim 30, characterized in that the

Fastening means are at least partially designed as at least one tension fastening projection (40, 41) projecting inwards on the inner peripheral side (8) or as at least one tension fastening projection (105) projecting outwards on the outer peripheral side (7), in particular two tension fastening projections ( 40, 41) are present, one of which is preferably arranged at one of the two tangential ends (38, 39) of the Kjeiskamm base body (6).

32. Circular comb according to claim 30 or 31, characterized in that the fastening means (80, 81) are at least partially designed as at least one fastening contact surface, and a surface normal of the fastening contact surface, which is in particular designed as a conical surface, both relative to the axis of rotation (4) Radial direction as well as to the direction tangential to the axis of rotation (4) runs obliquely.

33. Circular comb according to one of claims 30 to 32, characterized in that the fastening means are at least partially designed as base body threaded bores (68) for screwing in tension fastening screws (71), the base body threaded bores (68) starting from a radial boundary - surface on at least one of the two tangential ends (39) of the Kjeiskamm base body (61; 104), in particular as blind holes, extend into the Kjeiskamm base body (61; 104).

34. Circular comb according to one of claims 30 to 33, characterized in that the fastening means are at least partially formed as at least one receiving eyelet (123) which is integrally formed on one of the two tangential ends (39) of the circular comb base body (104) and which extends in the direction of the The eyelet through-opening (126) extending through the axis of rotation (4) is designed for the releasable insertion of a rotatable eccentric tension rod (128).

35. Circular comb according to one of claims 30 to 34, characterized in that the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) is designed to be under the for its attachment on the shaft ( 5) intended application of the tangential tensile force (F ₃ ) to deform elastically.

36. Circular comb according to one of claims 30 to 35, characterized in that the circular comb base body (6; 30; 61; 73; 84; 96;

104; 119) consists of a base body material with a yield point or a yield point and is designed to absorb a permanent stress load caused by the fastening force for its fastening on the shaft (5), which is in the range between 40% and 80%, in particular between 45 % and 70%, and preferably between 47% and 53% of the yield strength or the yield strength.

37. Circular comb according to one of claims 30 to 36, characterized in that the circular comb base body (119) on its inner circumference The catch side (8) has a cylindrical segment-shaped inner circumferential surface with an inner radius (Ri((p, z)), the value of the inner radius (Ri(cp, z)) in the unassembled state of the Kjeiskamm base body (119) depending on a tangential and axial Position is subject to local radius fluctuations, and these local radius fluctuations are in the range between ±0.2% and ±2%, in particular between ±0.3% and ±1.2% and preferably between ±0.35% and ±0.55% an inner radius setpoint (Ri _S ).

38. Circular comb unit for a combing machine for combing textile fibers

a) a shaft (5) rotatable about an axis of rotation (4) and

b) a circular comb (2; 29; 83; 102; 117) attached to the shaft (5) according to one of claims 30 to 37,

where

c) the circular comb unit (1; 28; 60; 72; 82; 95; 101; 116; 129) for attaching the circular comb (2; 29; 83; 102; 117) to the shaft (5) at least one concentric to the axis of rotation ( 4) arranged mounting surface (15), on which the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) rests with its inner peripheral side (8), the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) is attached to the shaft (5) under application of a tangential tensile force (Fi; F ₃ ).

39. Circular comb unit according to claim 38, characterized in that the circular comb unit (1; 28; 60; 72; 82; 95; 101; 116; 129) has fastening countermeasures (51; 55; 64, 65; 69, 71; 76, 77, 78, 79; 110, 122, 113, 11 1, 114, 115; 124, 125, 128) which is used to attach the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) on the shaft (5) with the fastening means (40, 41; 68; 80, 81; 105; 106; 123) of the Kjeiskamm base body (6; 30; 61; 73; 84; 96; 104; 119) interact in such a way that the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) interacts with the tangential tensile force (Fi; F ₃ ) is applied.

40. Circular comb unit according to one of claims 38 and 39 with a

Circular comb according to claim 31, characterized in that the

Circular comb unit (1; 82; 129) comprises a fastening mechanism (3) for fastening the circular comb base body (6; 84) to the shaft (5), wherein the fastening mechanism (3) represents a fastening counter-means and in particular about a pivot axis (54) pivotable tie rod (55), which is attached to the at least one inwardly or outwardly projecting tension fastening projection (41) of the Kjeiskamm base body (6; 84) while the Kjeiskamm base body (6; 84) is subjected to the tangential tensile force (Fi; F ₃ ) attacks.

41. Circular comb unit according to one of claims 38 to 40 with a

Circular comb according to claim 32, characterized in that the

Circular comb unit (72) comprises a fastening mechanism (74) for fastening the circular comb base body (73) to the shaft (5), wherein the fastening mechanism (74) represents a fastening counter-means (78, 79) and rests against the fastening contact surface with a changeable contact position - surface, and a surface normal of the fastening counter surface, which is designed in particular as a conical counter surface, runs obliquely both to the radial direction with respect to the axis of rotation (4) and to the direction tangential with respect to the axis of rotation (4), wherein the tangential tensile force (Fj; F ₃ ) acting on the circular comb base body (73) can be adjusted by means of the contact position.

42. Circular comb unit according to one of claims 38 to 41 with a

Circular comb according to claim 33, characterized in that the

Circular comb unit (60; 101) comprises a fastening mechanism (63; 103) for fastening the circular comb base body (61; 104) to the shaft (5), the fastening mechanism (63; 103) having a tension screw anchoring block (69; 114) outside the combing area. comprises, and the tension screw anchoring block (69; 114) has through holes (70) for receiving the tension fastening screws (71).

43. Circular comb unit according to one of claims 38 to 42 with a

Circular comb according to claim 34, characterized in that the

Circular comb unit (116) comprises a fastening mechanism (118) for fastening the circular comb base body (119) to the shaft (5), which comprises at least one receiving counter eyelet (125), which receiving counter eyelet (125) is also in the direction of the axis of rotation ( 4) extending counter eyelet through opening (127) for releasable

Inserting the rotatable eccentric tension rod (128), with a degree of overlap of the eyelet through-opening (126) of the circular comb base body (119) and the counter-eye through-opening (127) of the fastening mechanism (3) by means of a rotary movement of the inserted eccentric tension rod ( 128) can be enlarged, whereby the Kjeiskamm base body (119) is subjected to the tangential tensile force (Fi; F ₃ ).

44. Circular comb unit according to one of claims 38 to 43, characterized in that the circular comb unit (1; 28; 60; 72; 82; 95; 101; 116; 129) has a fastening mechanism (3; 63; 74; 103; 118). - which is designed to apply the tangential tensile force (F ₃ ) to the Kjeiskamm base body (6; 30; 61; 73; 84; 96; 104; 119) for its attachment to the shaft (5), that the circular comb base body (6; 30; 61 ; 73; 84; 96; 104; 119) deforms elastically.

45. Circular comb unit according to one of claims 38 to 44, characterized in that the circular comb base body (6; 30; 61; 73; 84; 96; 104; 119) consists of a base body material with a yield point or a yield point, and the circular comb unit (1; 28; 60; 72; 82; 95; 101; 116; 129) comprises a fastening mechanism (3; 63; 74; 103; 118) which is designed to hold the circular comb

The base body (6; 30; 61; 73; 84; 96; 104; 119) is to be subjected to the tangential tensile force (F ₃ ) for its attachment to the shaft (5) in such a way that the tension load on the circular comb base body caused by the attachment force (6; 30; 61; 73; 84; 96; 104; 119) is in the range between 40% and 80%, in particular between 45% and 70%, and preferably between 47% and 53% of the yield strength or the yield strength.

46. Circular comb unit according to one of claims 38 to 45, characterized in that the circular comb unit (101; 116; 129) has a fastening mechanism (103; 118; 3, 132) for fastening the circular comb base body (104; 119; 6). on the shaft (5), the fastening mechanism (103; 118; 3, 132) comprising a counterweight (107; 121) to the circular comb (102; 117; 2).

47. Circular comb unit according to one of claims 38 to 46, characterized in that the circular comb unit (129) comprises a tear-off segment (130) intended for tearing off a tuft of fibers combed out in the combing area, with a cylindrical segment-shaped tear-off surface (131), the tear-off segment (130) in particular in is attached to the shaft (5) approximately opposite to the combing area of the circular comb under application of a tangential tensile force (F ₄ ).

48. Circular comb unit according to claim 47, characterized in that a first fastening mechanism (3) is present for fastening the circular comb (2) to the shaft (5) and a second fastening mechanism (3) is present for fastening the tear-off segment (130) to the shaft (5). 132) is present, wherein the first fastening mechanism (3) and the second fastening mechanism (132) are designed to be essentially identical.