EP3137660B1 - Peigne circulaire et ensemble formant peigne circulaire muni d'un peigne circulaire fixé à un arbre - Google Patents

Peigne circulaire et ensemble formant peigne circulaire muni d'un peigne circulaire fixé à un arbre Download PDF

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Publication number
EP3137660B1
EP3137660B1 EP15720083.3A EP15720083A EP3137660B1 EP 3137660 B1 EP3137660 B1 EP 3137660B1 EP 15720083 A EP15720083 A EP 15720083A EP 3137660 B1 EP3137660 B1 EP 3137660B1
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EP
European Patent Office
Prior art keywords
circular comb
combing
contact
fastening
base body
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EP15720083.3A
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German (de)
English (en)
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EP3137660A2 (fr
Inventor
Friedrich Henninger
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Staedtler and Uhl KG
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Staedtler and Uhl KG
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Priority to EP20158496.8A priority Critical patent/EP3680371B1/fr
Publication of EP3137660A2 publication Critical patent/EP3137660A2/fr
Application granted granted Critical
Publication of EP3137660B1 publication Critical patent/EP3137660B1/fr
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/10—Construction, mounting, or operating features of combing elements
    • D01G19/105—Combing cylinders

Definitions

  • the invention relates to a circular comb for a combing machine for combing textile fibers and for attachment to a shaft of the combing machine which can be rotated about an axis of rotation.
  • the invention relates to circular comb units for a comber for combing textile fibers.
  • Combs for use in combing machines are known, for example in the form of circular or circular combs, by prior prior use, comb elements being arranged on a circular comb base body and engaging with the fiber beard of the textile fibers to be combed.
  • a comb which is 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 surface line of the circular comb.
  • the combing elements can be, for example, needles, pin strips, saw tooth wire sections, comb teeth or, in particular, saw tooth punched parts.
  • combing bars which are sometimes also referred to as combing segments or combing sets.
  • Such a combing bar can thus have, for example, several sawtooth punched parts, sawtooth wire sections arranged axially, ie in the direction of the axis of rotation, or toothed disks provided with teeth.
  • DD 283 847 A5 describes the attachment of a circular comb base body provided with a plurality of combing bars to the rotatable shaft of a combing machine, referred to there as a circular comb roller, by means of screw connections.
  • the fastening strip which is otherwise customary in the circumferential direction or direction of rotation, otherwise for attaching the screw connections, is dispensed with.
  • CH 683 190 A5 describes a radially height-adjustable attachment of a circular comb base body provided with a plurality of combing bars to a roller or holding body of a combing machine.
  • the circular comb base body is held at an infinitely adjustable radial distance from the roller or holding body.
  • This radial adjustable holder makes it possible to easily set a desired low radial distance between the tooth tips of the combing needles or locks and a pair of pliers holding the fiber beard to be combed. A slight concave bending of the circular ridge resulting from the adjustable holder is said to be advantageous.
  • EP 2 633 107 A1 describes a comb of a combing machine which has a basic comb body, on the outer circumferential side of which there are external contact strips for contacting the combing bars and on the inner circumferential side of which there are internal contact strips for contacting the shaft of the combing machine.
  • the outer and inner contact strips are assigned to one another and form pairs of strips, of which there are two per combing bar, most of the pairs of strips each being assigned to two adjacent combing bars.
  • the circular comb comprises a circular comb base body with an outer circumferential side and an inner circumferential side, a plurality of comb bars arranged on the outer circumferential side of the circular comb base body, which in their entirety cover a comb circumferential angle segment and a comb region of the circular comb, whereby on the outer circumferential side of the circular comb base body there are at least two external contact strips per combing bar extending axially in the direction of the axis of rotation and tangentially spaced apart with respect to the rotating axis, which form combing bar contact surfaces against which the respective combing bar rests, On the inner circumferential side of the circular comb base body, there are internal contact strips which extend axially in the direction of the axis of rotation, project radially inward with respect to the axis of rotation and are spaced apart tangentially with respect to the axis of rotation and which, at least within the combin
  • the circular comb base body has, in particular, essentially the basic shape of a circumferential segment of a hollow cylinder, the cylinder axis of the hollow cylinder being a central longitudinal axis of the circular comb base body, in particular coinciding with the axis of rotation.
  • the location or direction information used here relates in particular to the axis of rotation or a cylinder coordinate system defined by the axis of rotation.
  • axial stands for an orientation in the direction of the axis of rotation
  • radial for an orientation perpendicular to the axis of rotation
  • tangential for an orientation in the circumferential direction about the axis of rotation.
  • the combing bars are in particular in direct contact with the contact surfaces formed by the external contact strips. For this reason, these contact surfaces are also referred to as combing contact surfaces.
  • the contact surfaces are formed by the inner contact strips projecting in particular in the direction of the axis of rotation.
  • the inner contact strips thus represent in particular protruding projections.
  • These inner contact strips form at least within the combing area on the inner circumferential side of the basic comb body the only and / or in particular exclusive contact surfaces for mounting the basic comb body on the shaft.
  • the circular comb base body with these shaft mounting contact surfaces can either be in direct contact with the shaft or only indirectly connected to the shaft by means of at least one additional mounting component arranged in between, such as for example by means of a holding flange or holding body. Apart from the shaft mounting contact surfaces, at least within the combing area there is no further contact between the circular comb base body on the one hand and the shaft or an additional mounting component on the other hand. The tangential spaces between two adjacent inner contact strips are therefore in particular contact-free.
  • the outer contact strip and the inner contact strip of a pair of strips are preferably located radially opposite one another.
  • the external contact strip has in particular at least one external contact strip sub-area, which corresponds in its tangential position and extent to at least one internal contact strip sub-region of the internal contact strip. These partial areas of the outer and inner contact strips of a pair of strips that overlap each other tangentially lie radially opposite one another.
  • At least two, in particular two to ten, preferably two to five such pairs of strips are present per combing bar.
  • Within the circular comb base body there are at least two partial areas per combing bar with a continuous (uninterrupted) material connection in particular in the radial direction between the inner and the outer peripheral side.
  • These sub-areas in particular in the radial direction continuous material connection open on the inner and outer peripheral side into the contact surfaces of the circular comb base body formed by the outer contact and inner contact strips to the comb bars or in the direction of the shaft.
  • a radial connection distance to the shaft is thus very precisely defined for each comb bar at at least two tangentially spaced locations. This connection distance is particularly determined by the radial distance between the contact surfaces on the outer and inner contact strips.
  • the circular comb base body has an undesirable mechanical twist or tension or its diameter has a tolerance or inaccuracy of, for example, up to ⁇ 2%, this advantageously has no negative influence on the ultimately assembled state of the circular comb for each comb bar resulting radial connection distance to the shaft.
  • Such warping or tensioning as well as diameter tolerances can be compensated for by means of the internal contact strips due to the only area-wise or singular contacting of a mounting surface.
  • This favorable torsion or tension compensation and / or the compensation of diameter tolerances can be achieved, in particular, by applying a suitable tensile stress to the circular comb base body when it is (indirectly or directly) attached to the shaft. Since, during the production of the circular comb base body, in particular no particular attention has to be paid to the avoidance of twists / tensions and / or to the high-precision compliance with the diameter specification, the circular comb base body of the circular comb according to the invention can be produced simply and inexpensively.
  • the outer and inner contact strips are attached to the same component, namely the circular comb base body, the correspondence of the tangential position / extension of the mutually associated outer and inner contact strips of each of the pairs of strips can already be ensured during the production of the circular comb base body become. At this stage, this is associated with comparatively little effort despite the very high positional accuracy that can be achieved. In contrast, there is a higher effort if - which is also possible in principle - the mutually assigned outer and inner contact strips are attached to different components and the correspondence of the tangential position / expansion only at a later stage, e.g. is only ensured during assembly of the circular comb base body on the shaft.
  • the circular comb according to the invention with the circular comb base body projecting on its inner circumferential side can be easily retrofitted to existing combing machines which are used for connecting the circular comb to the shaft e.g. have a uniformly smooth cylinder (segment) shaped mounting surface.
  • existing combing machines can also benefit from the advantages of the circular comb according to the invention described above.
  • the circular comb according to the invention avoids some of the errors which have so far sometimes occurred during the assembly of conventional circular combs.
  • conventional circular combs for example, because of a slightly tilted attachment of the circular comb base body to the mounting surface, undesirable radial gaps between the inner peripheral side of the circular comb base body and the mounting surface are formed, as a result of which the radial position of the tooth tips also shifts. The same can happen if the mounting surface is contaminated, for example, by combing residues.
  • the only singular contact surfaces formed by the internal contact strips and in particular a corresponding preferably tangentially clamped or tensioned fastening of the circular comb base body to the mounting surface in the circular comb according to the invention at least contribute to circumventing or at least considerably reducing the consequences resulting from such mounting errors from the outset become.
  • the depressions which are present in particular on the inner circumferential side of the circular comb base body and are arranged between the inwardly projecting internal contact strips are accompanied by material savings and thus a reduction in weight of the circular comb base body.
  • edge strip pairs designed as edge strip pairs are present for each comb bar, wherein in each of the edge strip pairs a tangential distance from a tangential bolt edge of the respective comb bolt is smaller than a tangential distance between the two edge strip pairs.
  • the edge strip pairs can in particular also be arranged exactly on the tangential bar edge, ie, directly adjoin the tangential bar edge.
  • the outer contact strip and the inner contact strip are each arranged tangentially at the same position and have the same tangential extension.
  • the mutually assigned outer and inner contact strips and also the contact surfaces formed by them on the outer and inner circumferential surface of the circular comb base body lie exactly radially opposite one another, which results in particularly efficient storage and support for the combing bar towards the shaft.
  • the two external contact strips assigned to such a combined, double-acting internal contact strip can be structurally separated from one another in the tangential direction, in particular structurally, for example by an intermediate recess, or in particular also merge directly into one another.
  • the projections of the inner contact strips have a radial projection height, measured perpendicular to the axis of rotation, of between 0.25 mm and 5 mm, in particular between 0.5 mm and 2 mm.
  • this height is high enough that any mechanical twists or tensions or diameter tolerances of the circular comb base body during assembly, e.g. can be compensated by a corresponding tensile load, and on the other hand not so high that mechanical instabilities occur.
  • the projections of the inner contact strips have a radial projection height, measured perpendicular to the axis of rotation, of between 0.25 mm and 35 mm, in particular between 0.5 mm and 25 mm.
  • the circular comb base body in the assembled state is in particular in direct contact with the shaft and then preferably has a relatively large radial extent in order in particular to meet the requirements for the radial distance of the tooth tips from the axis of rotation.
  • the projection height can also have larger values, e.g. assume more than 10 mm and in particular up to a few 10 mm.
  • the contact surfaces formed by the inner contact strips have a surface area which is designed such that, in the assembled state, a radial surface pressure between the inner circumferential side of the circular comb base body and a mounting surface is at most 25 N / mm 2 , and in particular at most 15 N / mm 2 .
  • This radial surface pressure is preferably at least 5 N / mm 2 in each case.
  • the circular comb base body is equipped with fastening means for fastening it on the shaft and are these fastening means designed and / or in particular contribute to applying a tangential tensile force to the circular comb base body when fastened to the shaft.
  • a tangential tensile force also presses the circular comb base body against a mounting surface, so that any mechanical distortions or tension or diameter tolerances of the circular comb base body are compensated for.
  • the fastening means are at least partially inward as at least one on the inner circumferential side (in particular radially), i.e. towards the axis of rotation, protruding and in particular provided with an undercut pull fastening projection, in particular two pull fastening projections are present, one of which is preferably arranged at one of the two tangential ends of the circular comb base body.
  • the tension fastening projection can preferably be equipped with a contact or contact surface which is oblique to the radial direction, so that the tension applied has both a tangential and a radially inward directional component.
  • 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 designed in particular as a conical surface, preferably as an inner circumferential surface of a conical bore, extends both with respect to the radial direction with respect to the axis of rotation and with respect to the axis of rotation tangential direction inclined or tilted.
  • the surface normal closes the mounting contact surface with the radial and tangential directions in each case an angle from the open angle range] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °] a.
  • Such an inclined or tilted fastening contact surface allows a simple application of tensile stress to the circular comb base body.
  • the fastening means can at least partially also be designed as radially extending through bores in the circular comb base body on at least one of its two tangential end regions, at least some of the through bores each having a bore cross-sectional area in the form of a conical seat that receives a tapered screw head of a tension fastening screw in the shape of a conical seat toward the outer circumferential side has, so that in turn advantageously a tangential tensile force results on the circular crest base body when the tension fixing screws are fitted.
  • each through-hole has a through-hole longitudinal axis running essentially in the radial direction.
  • the fastening means are at least partially designed as base body threaded bores for screwing in tension fastening screws, the base body threaded bores starting 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 extend into it.
  • Such basic body tapped holes allow a simple application of tension to the circular comb basic body.
  • Another object of the invention is to provide a circular comb unit of the type mentioned at the outset with properties which are improved over the prior art.
  • a circular comb unit is specified according to the features of claim 6.
  • 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 fastened to the shaft as described above or one of the preferred embodiments of the circular comb according to the invention also described above, the circular comb unit for fastening the circular comb to the shaft at least one smooth cylindrical segment-shaped arranged concentrically to the axis of rotation Includes mounting surface against which the inner contact strips of the circular comb base body.
  • the smooth (or uniformly) cylindrical segment-shaped mounting surface is in particular free of projections or depressions.
  • the mounting surface in the form of a cylindrical segment has a high concentricity and / or rotational symmetry with respect to the axis of rotation.
  • the mounting surface fulfills 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 essentially has the same advantages that have already been described above in connection with the circular comb according to the invention and its preferred embodiments.
  • An embodiment is favorable in which the fastening means of the circular comb base body interact with fastening countermeans of the circular comb unit in such a way that the circular comb base body is subjected to a tangential tensile force.
  • the circular comb base body is pressed closely against the smooth and, in particular, dimensionally stable mounting surface in the form of a cylindrical segment.
  • any mechanical twists or tensions or diameter tolerances of the circular comb base body are compensated for in this pressing process.
  • the fastening countermeans can also be, in particular, part of the shaft or, in particular, part of a fastening mechanism which is at least partially placed between the shaft and the circular comb base body.
  • the circular comb unit has a fastening mechanism which comprises a tie rod which represents a fastening antidote and in particular can be pivoted about a pivot axis and which presses with a particularly adjustable tangential force against the at least one inwardly projecting tensile fastening projection of the circular comb base body.
  • a fastening mechanism which comprises a tie rod which represents a fastening antidote and in particular can be pivoted about a pivot axis and which presses with a particularly adjustable tangential force against the at least one inwardly projecting tensile fastening projection of the circular comb base body.
  • the circular comb unit has a fastening mechanism which comprises a fastening counter-contact surface which represents a fastening counter-means and which (in particular radially) can be changed against the fastening contact surface, and runs a surface normal of the fastening counter-contact surface which is in particular designed as a cone counter surface, preferably as an outer circumferential surface of a conical screw head inclined or tilted both with respect to the radial direction with respect to the axis of rotation and with respect to the direction tangential with respect to the axis of rotation, a tangential tensile force acting on the circular comb base body being adjustable by means of the contact position.
  • a fastening counter-contact surface which represents a fastening counter-means and which (in particular radially) can be changed against the fastening contact surface
  • runs a surface normal of the fastening counter-contact surface which is in particular designed as a cone counter surface, preferably as an outer circumferential surface of a conical screw head inclined or tilt
  • the surface normal of the fastening counter abutment surface with the radial and tangential directions in each case forms an angle from the open angle range] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °] a.
  • the inclined positions of the fastening contact surface and the fastening counter-contact surface are in particular matched to one another. Because of this inclined position, a tangential tensile stress acting on the circular comb base body is also brought about and the advantageous compensation of twists, tension or diameter tolerances is achieved in the circular comb counter body.
  • the circular comb unit can also have a fastening mechanism which comprises at least one holding body forming at least the cylindrical segment-shaped mounting surface, which is provided with at least one holding body threaded bore, the holding body threaded bores together with associated tension fastening screws, which are each provided with a conical screw head, fastening countermeasures represent.
  • the holding body threaded bores preferably extend outside the combing area from the cylindrical 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 apart from one another by a holding body circumferential angular distance.
  • the through bores arranged at the first tangential end region of the circular comb base body and representing countermeasures for fastening are tangentially spaced by a basic body circumferential angular distance from the through bores which are arranged at the other tangential end region of the circular comb base body and also represent countermeans for fastening.
  • one of the tension fastening screws is inserted through one of the through bores of the circular comb base body and screwed into one of the holding body threaded bores, the conical screw head being seated within the conical seat of the through bore.
  • the basic body circumferential angular distance of the through holes of the circular comb basic body in the unassembled state of the circular comb basic body is smaller than the holding body circumferential angular distance of the holding body threaded bore, which, depending on the depth of penetration or screwing in of the tapered screw heads into the conical seat of the associated through bore, results in a tangential tensile stress on the Circular comb base body is exercised and the compensation of twists, tensions or diameter tolerances in the circular comb counter body is effected.
  • the circular comb unit has a fastening mechanism which, outside the combing area, comprises a lag screw anchor block which extends radially outward from the cylindrical segment-shaped mounting surface, the lag screw anchor block having anchor block through-bores for receiving the lag screw.
  • the tension fastening screws are screwed into the associated base body threaded hole of the circular comb base body with a particularly adjustable screwing depth. This, in turn, causes a particularly adjustable tangential tensile stress acting on the circular comb base body and the advantageous compensation of twists, tensions or diameter tolerances in the circular comb counter body.
  • the attachment by means of the lag screw anchoring block is provided only at a tangential end of the circular comb counter-body.
  • the circular comb base body can be attached to the holding body in a conventional manner, e.g. by means of simple fastening screws which are inserted essentially in the radial direction through through holes provided in the circular comb base body and screwed into the holding body, or by means of interlocking fastening projections.
  • Another object of the invention is to provide a further circular comb unit of the type mentioned at the outset with properties which are improved compared to the prior art.
  • a circular comb unit is specified according to the features of claim 8.
  • This circular comb unit according to the invention comprises a shaft rotatable about an axis of rotation, a circular crest fastened to the shaft and at least one mounting surface arranged concentrically to the axis of rotation with an essentially cylindrical segment-shaped basic shape.
  • the circular comb attached to the shaft has a circular comb base body with an outer circumferential side and an inner circumferential side, which is designed as a smooth cylindrical segment-shaped inner circumferential surface arranged concentrically to the axis of rotation, and a plurality of comb bars arranged on the outer circumferential side of the circular comb basic body, which in their entirety form a comb circumferential angle segment cover and define a combing area of the circular comb.
  • On the outer circumferential side of the circular comb base body there are at least two external contact strips per combing bar that extend axially in the direction of the axis of rotation and are tangentially spaced apart with respect to the axis of rotation, which form combing bar contact surfaces against which the respective combing bar rests.
  • the mounting surface has contact projections running axially in the direction of the axis of rotation, projecting radially outwards with respect to the axis of rotation and spaced apart tangentially with respect to the axis of rotation, which at least within the meshing area form the only partial surfaces of the mounting surface with which the mounting surface on the inner peripheral surface of the circular comb base body for direct or indirect connection of the circular comb base body to the shaft.
  • At least some of the external contact strips of the circular comb base body are each assigned either to one of the contact projections of the mounting surface or, if several contact projections of the mounting surface are axially aligned but spaced apart from one another as rows of contact projections, are assigned to one of these contact projection rows of the mounting surface and form the respective external contact strip with the associated one Contact projection or the associated row of contact projections each a pair of strips / projections, the outer contact strip of the circular comb base body and the contact projection of the mounting surface or the contact projection row of the mounting surface of each of the pairs of strips / protrusions overlap at least partially in their tangential extension, and at least two pairs of strips / projections are present per combing bar.
  • the smooth cylindrical segment-shaped inner peripheral surface of the circular comb base body has in particular no projections or depressions. In this respect, it is in particular a uniform cylindrical segment-shaped surface without interruption or disturbance of the pure cylindrical segment shape.
  • the mounting surface provided for mounting or fastening the circular comb base body on the shaft can in particular be part of the shaft or in particular part of a fastening mechanism which is at least partially placed between the shaft and the circular comb base body.
  • the mounting surface can be made in several parts and e.g. Assemble from several axially spaced apart areas.
  • 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 circumferential side of the circular comb basic body is designed as a projection and recess-free smooth cylindrical segment-shaped surface and for that on the contact on the inner circumferential side of the circular comb base body certain mounting surface, a structure with projections and recesses is provided.
  • This structure of the mounting surface essentially corresponds to the inner contact strips arranged on the inner circumferential side of the circular comb base body in the above-described circular comb and the above-described first circular comb unit.
  • the advantages and modes of operation explained for the circular comb according to the invention described above and for the first circular comb unit according to the invention described above apply accordingly to the further circular comb unit according to the invention.
  • the circular comb has a particularly precise and essentially uniform radial position within the entire combing area of all, if this is theoretically provided according to the relevant circular comb construction, tooth tips of the comb teeth of all comb bars or, if the tooth tips according to The relevant circular comb construction should be located at different radial positions, which, viewed across all comb bars, allows the tooth tips of the comb teeth, which are the furthest away from the axis of rotation, to mount all comb bars in the combing machine and in particular on the shaft, if on the outer circumferential side of the basic comb body and on the mounting surface , on which the circular comb base body rests, pairs with contact surfaces, in particular radially opposite one another, which preferably at least partially match tangential positions and / or position areas I have existed.
  • the combing bars are located on the outer circumferential side of the circular comb base body on the contact surfaces formed by the external contact strips again in particular immediately. For this reason, these contact surfaces are also referred to as combing bar contact surfaces.
  • the contact surfaces are formed by the contact projections projecting outwards, in particular away from the axis of rotation. 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 circular comb base body rests on the shaft on the inner circumferential side of the circular comb base body.
  • the connection of the circular comb base body to the shaft, which takes place by means of these partial surfaces, can be designed directly or indirectly.
  • the mounting surface is in particular a direct component of the shaft.
  • the mounting surface is in particular a component of at least one additional mounting component arranged between the circular comb base body and the shaft, e.g.
  • a holding flange or holding body Apart from the partial surfaces of the mounting surface formed by the contact projections, at least within the combing area there is no further contact between the circular comb base 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.
  • the contact surfaces in particular meet 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 circular comb base body and the contact protrusion of the mounting surface or the row of contact protrusions of the mounting surface of a pair of strips / protrusions preferably lie radially opposite one another.
  • the external contact strip has, in particular, at least one external contact strip section, which corresponds in its tangential position and extent to at least one contact projection section of the contact projection or the row of contact projections.
  • At least two, in particular two to ten, preferably two to five such pairs of strips / projections are present per combing bar.
  • Within the circular comb base body there are at least two partial areas per combing bar with a continuous (uninterrupted) material connection in particular in the radial direction between the inner and the outer peripheral side.
  • These partial areas, with a continuous material connection in particular in the radial direction open out on the inner and outer circumferential sides in contact surfaces of the circular comb base body with the comb bars (formed by the external contact strips) and the mounting surface.
  • a radial connection distance to the shaft is thus very precisely defined for each comb bar at at least two tangentially spaced locations.
  • connection distance is determined in the assembled state in particular by the radial distance between the contact surfaces on the external contact strips of the circular comb base body and the contact projections of the mounting surface. Even if, due to one of the production steps, the circular comb base body has an undesired mechanical twist or tension or its diameter a tolerance or inaccuracy of should have up to ⁇ 2%, for example, this advantageously has no negative influence on the radial connection distance to the shaft that ultimately results in the assembled state of the circular comb for each comb bolt. Such warping or tensioning as well as diameter tolerances can be compensated for by the contact jumps on the mounting surface due to the only area-wise or singular contacting.
  • This favorable torsion or tension compensation and / or the compensation of diameter tolerances can be achieved, in particular, by applying a suitable tensile stress to the circular comb base body when it is (indirectly or directly) attached to the shaft. Since during the production of the circular comb base body no particular attention has to be paid to the avoidance of twists / tensions and / or to the high-precision adherence to the diameter specification, the circular comb base body of the further circular comb unit according to the invention can also be produced simply and inexpensively.
  • the further circular comb unit according to the invention avoids some of the errors which have so far sometimes occurred during the assembly of conventional circular combs.
  • conventional circular combs for example, due to a slightly tilted attachment of the circular comb base body to the mounting surface, undesired radial gaps between the inner circumferential side of the circular comb base body and the mounting surface are formed, which also shifts the radial position of the tooth tips. The same can happen if the mounting surface is contaminated, for example, by combing residues.
  • the recesses in particular on the mounting surface which are arranged between the outwardly projecting contact projections, are accompanied by material savings and thus a weight reduction in the overall arrangement.
  • a configuration is favorable in which there are exactly two pairs of strips / projections per combing bar. This means that each combing bar has a mechanically defined bearing and support towards the shaft.
  • two pairs of strips / projections designed as edge pairs are present for each comb bar, wherein for each of the edge pairs a tangential distance from a tangential bar edge of the respective comb bar is in particular smaller than a tangential distance between the two edge pairs.
  • the edge pairs can in particular also be arranged exactly on the tangential ledge edge, that is to say directly adjoin the tangential ledge edge.
  • the external contact strips of the circular comb base 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 and have the same tangential extension.
  • the mutually assigned external contact strips and contact projections or rows of contact projections and the contact surfaces formed by them on the outer circumferential surface of the circular comb base body or on the mounting surface lie exactly radially opposite one another, as a result of which particularly efficient storage and support for the comb bars Result in a wave.
  • there is at least one contact projection or at least one row of contact projections on the mounting surface which is assigned to the two external contact strips of the basic comb body and thus also two pairs of strips / projections, the two external contact strips of the basic comb body each being indicated different combs.
  • the two external 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 intermediate recess, or can also merge directly into one another.
  • the contact projections have a radial projection height, measured perpendicular to the axis of rotation, of between 0.25 mm and 5 mm, in particular between 0.5 mm and 2 mm.
  • this height is high enough that any mechanical twists or tensions or diameter tolerances of the circular comb base body during assembly, e.g. can be compensated by a corresponding tensile load, and on the other hand not so high that mechanical instabilities occur.
  • the contact surfaces formed by the contact jumps have a surface area and a surface distribution that are designed such that a radial surface pressure between the inner peripheral surface of the circular comb base body and the contact jumps of the mounting surface is at most 25 N / mm 2 , and in particular at most 15 N / mm 2 .
  • This radial surface pressure is preferably at least 5 N / mm 2 in each case.
  • the circular comb base body is equipped with fastening means for fastening it to the shaft and these fastening means are designed and / or in particular contribute to the fact that the circular comb base body is fastened tangentially tensioned on the shaft.
  • Such a tangential tensile force also presses the circular comb base body against a mounting surface, so that any mechanical distortions or tension or diameter tolerances of the circular comb base body are compensated for.
  • the fastening means of the circular comb base body also interact with fastening countermeans of the circular comb unit in such a way that the circular comb base body is subjected to a tangential tensile force. As a result, the circular comb base body is pressed tightly against the mounting surface. On the other hand, any mechanical twists or tensions or diameter tolerances of the circular comb base body are compensated for in this pressing process.
  • the fastening countermeans can also be, in particular, part of the shaft or, in particular, part of a fastening mechanism which is at least partially placed between the shaft and the circular comb base body.
  • the fastening means are at least partially inward as at least one on the inner circumferential side (in particular radially), i.e. towards the axis of rotation, protruding and in particular provided with an undercut pull fastening projection, in particular two pull fastening projections are present, one of which is preferably arranged at one of the two tangential ends of the circular comb base body.
  • the tension fastening projection can preferably be equipped with a contact or contact surface which is oblique to the radial direction, so that the tension applied has both a tangential and a radially inward directional component.
  • the circular comb unit has a fastening mechanism which represents a tie rod which represents a fastening antidote and in particular can be pivoted about a pivot axis comprises, which presses with a particularly adjustable tangential force against the at least one inwardly projecting tension fastening projection of the circular comb base body. This causes a tangential tensile stress acting on the circular comb base body and the advantageous compensation of twists, tension or diameter tolerances in the circular comb counter body is accomplished in a simple manner.
  • 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 designed in particular as a conical surface, preferably as an inner circumferential surface of a conical bore, extends both with respect to the radial direction with respect to the axis of rotation and with respect to the axis of rotation tangential direction inclined or tilted.
  • the surface normal of the fastening contact surface with the radial and the tangential direction in each case closes an angle from the open angle range] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °] a.
  • Such an inclined or tilted fastening contact surface allows a simple application of tensile stress to the circular comb base body.
  • the fastening means can at least partially also be designed as radially extending through bores in the circular comb base body on at least one of its two tangential end regions, with at least some of the through bores each having a bore cross-sectional area that widens conically towards the outer circumferential side in the form of a conical seat for receiving a taper screw head of a tension fastening screw has, so that with mounted train fastening screws again advantageously a tangential tensile force results on the circular comb base.
  • each through-hole has a through-hole longitudinal axis running essentially in the radial direction.
  • the circular comb unit has a fastening mechanism which comprises a fastening counter-contact surface which represents a fastening counter-means and which (in particular radially) can be changed against the fastening contact surface, and runs a surface normal of the fastening counter-contact surface which is in particular designed as a cone counter surface, preferably as an outer circumferential surface of a conical screw head inclined or tilted both with respect to the radial direction with respect to the axis of rotation and with respect to the direction tangential with respect to the axis of rotation, a tangential tensile force acting on the circular comb base body being adjustable by means of the contact position.
  • a fastening counter-contact surface which represents a fastening counter-means and which (in particular radially) can be changed against the fastening contact surface
  • runs a surface normal of the fastening counter-contact surface which is in particular designed as a cone counter surface, preferably as an outer circumferential surface of a conical screw head inclined or tilt
  • the surface normal of the fastening counter abutment surface with the radial and tangential directions in each case forms an angle from the open angle range] 0 °; 90 ° [and preferably from the angular range [15 °; 75 °] a.
  • the inclined positions of the fastening contact surface and the fastening counter-contact surface are in particular matched to one another. Because of this inclined position, a tangential tensile stress acting on the circular comb base body is also brought about and the advantageous compensation of twists, tension or diameter tolerances is achieved in the circular comb counter body.
  • this further circular comb unit can also have a fastening mechanism which comprises at least one holding body which forms the cylindrical segment-shaped mounting surface, which is provided with at least one holding body threaded bore, the holding body threaded bores together with associated tension fastening screws, which are each provided with a tapered screw head, representing fastening countermeasures.
  • the holding body threaded bores preferably extend outside the combing area from the cylindrical 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 apart from one another by a holding body circumferential angular distance.
  • the through bores arranged at the first tangential end region of the circular comb base body and representing countermeasures for fastening are tangentially spaced by a basic body circumferential angular distance from the through bores which are arranged at the other tangential end region of the circular comb base body and also represent countermeans for fastening.
  • one of the tension fastening screws is inserted through one of the through bores of the circular comb base body and screwed into one of the holding body threaded bores, the conical screw head being seated within the conical seat of the through bore.
  • the basic body circumferential angular distance of the through holes of the circular comb basic body in the unassembled state of the circular comb basic body is smaller than the holding body circumferential angular distance of the holding body threaded bore, which, depending on the depth of penetration or screwing in of the tapered screw heads into the conical seat of the associated through bore, results in a tangential tensile stress on the Circular comb base body is exercised and the compensation of twists, tensions or diameter tolerances in the circular comb counter body is effected.
  • one of the two tangential end regions of the circular comb base body engages with the conical seats
  • Tapered screw heads another attachment of the circular comb base body is provided on the holding body, such as a simple fixed bearing.
  • the fastening means are at least partially designed as base body threaded bores for screwing in tension fastening screws, the base body threaded bores starting 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 extend into it.
  • Such basic body tapped holes allow a simple application of tension to the circular comb basic body.
  • the circular comb unit has a fastening mechanism which, outside of the combing area, comprises a lag screw anchor block which extends radially outward from the mounting surface, the lag screw anchor block having anchor block through-bores for receiving the lag fastening screws.
  • the tension fastening screws are screwed into the associated base body threaded hole of the circular comb base body with a particularly adjustable screwing depth. This, in turn, causes a particularly adjustable tangential tensile stress acting on the circular comb base body and the advantageous compensation of twists, tensions or diameter tolerances in the circular comb counter body.
  • the attachment by means of the lag screw anchoring block is provided only at a tangential end of the circular comb counter-body.
  • the circular comb base body can be attached to the holding body in a conventional manner, for example by means of simple fastening screws which are inserted essentially in the radial direction through through holes provided in the circular comb base body and screwed into the holding body, or by means of interlocking fastening projections.
  • a first exemplary 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 in particular also be understood as the central longitudinal axis of the circular comb unit 1.
  • a cylinder 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 the distance from the axis of rotation 4 and with a tangential direction ⁇ pointing in the circumferential direction about the axis of rotation 4.
  • the circular comb 2 is fastened on the rotatable shaft 5 by means of the fastening mechanism 3.
  • the circular crest 2 comprises a circular comb base body 6 with an outer circumferential side 7 and an inner circumferential side 8, as well as several comb bars 9 with comb teeth 10 arranged on the outer circumferential side 7 in the exemplary embodiment shown, which are intended for meshing engagement in the fiber beard of the textile fibers.
  • the combing bars 9 can be constructed differently.
  • the comb teeth 10 of the combing bar 9 can have different shapes and spacings and can be present in different numbers.
  • the tooth tips 11 of the comb teeth 10 are at a distance from the axis of rotation 4, referred to as the combing radius KR.
  • the tooth tips 11 are spaced a tip distance D from a lower edge of a pair of upper pliers 12.
  • the upper pliers 12 together with a lower pliers 13 form a pliers unit 14 of the comber.
  • the fiber beard (not shown) of the textile fibers to be combed is held.
  • the more precise and uniform the tip spacing 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 top pliers 12 and the better and more constant the combing result that 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 region and which, for example, has 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 is in particular in the range between 0.15 mm and 0.9 mm.
  • the circular comb unit 1 shown and the associated circular comb 2 are distinguished by a particularly exact, uniform and positionally accurate combing radius KR, at least the radially farthest from the axis of rotation 4 Tooth tips 11 of all comb bars 9, so that these tooth tips 11 in the circular comb unit 1 and in the further circular comb units described below can advantageously be placed closer to the pliers unit 14 in particular by up to 0.2 mm compared to conventional circular comb units.
  • the circular comb 2 and in particular its circular comb base body 6 are designed in a special way.
  • the circular comb base body 6 has defined and in particular singular contact surfaces both to the combing bars 9 and to a (here multi-part) mounting surface 15 of the fastening mechanism 3.
  • the circular comb base 6 has on its outer circumferential side 7 per comb 9 among others.
  • two external contact strips 16 and 17, which extend in the axial direction z and are spaced apart from one another in the tangential direction ⁇ . Between the two external contact strips 16 and 17 there is a recess 18 with a radially projecting fastening lug 19.
  • the external contact strips 16 and 17 form combing bar contact surfaces against which the relevant combing bar 9 bears.
  • These inner contact strips 20-22 also extend axially in the direction of the axis of rotation 4, jump radially inwards, ie in particular in the direction of the axis of rotation 4, and are spaced apart tangentially by depressions 23.
  • the inner contact strips 20-22 are formed by projections on the inner circumferential side 8. They provide the only contact surfaces within the combing area defined by all of the combing bars 9 of the circular comb base body 6 to the mounting surface 15 of the fastening mechanism 3 provided for fastening to the shaft 5. In this respect, these inner contact strips 20-22 form shaft mounting contact surfaces.
  • the inner contact strips 20-22 serve an indirect connection to the shaft 5.
  • the inner contact strips 20-22 can also be directly on the shaft 5 and thus form a direct connection with the same.
  • the circumferential surface of the shaft 5 then forms the mounting surface on which the circular comb base body bears with its inner circumferential side 8.
  • cavities or gaps are formed in the assembled state between the inner contact strips 20-22 due to the depressions 23, which separate the inner contact strips 20-22 from one another. These spaces are non-contact. In the area of these gaps there is no contact between the circular comb base 6 and the opposite mounting surface 15.
  • Per combing bar 9 are in the embodiment according to 1 to 3 the two external contact strips 16, 17 are assigned to two of the internal contact strips 20-22, namely the internal contact strips 20, 21.
  • the external contact strip 16 and the associated internal contact strip 20 as well as the external contact strip 17 and the assigned internal contact strip 21 each form a pair of strips 24 and 25, respectively.
  • the external contact strip 16 and the internal contact strip 20 of the pair of strips 24 assigned to it lie opposite one another. They overlap in their respective tangential Expansion at least in part. The same applies to the outer contact strip 17 and the inner contact strip 21 of the second pair of strips 25.
  • the circular comb base body 6 in the region of the pairs of strips 24, 25 each has a material connection or bridge in the radial direction r between those on the outer circumferential side 7 and on the inner circumferential side 8 provided contact surfaces to the combing bars 9 or to the mounting surface 15.
  • the radial distances d 1 and d 2 between these outside and inside contact surfaces of the circular comb base body 6 can be set and manufactured very precisely. This also applies if the circular comb base body 6, as in the exemplary embodiment shown, is designed as an extruded aluminum profile, which is anodized, among other things, for hardening purposes.
  • the circular comb base body 6 shown is an inexpensive component that, however, also has highly accurate radial spacing dimensions d 1 , d 2 with the opposing external contact strips 16, 17 and internal contact strips 20, 21 of the pairs of strips 24, 25.
  • the spacing dimensions d 1 , 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 pairs of strips 24, 25 are optional. They provide an additional support function.
  • the two pairs of strips 24, 25 are each a pair of edge strips, which are each arranged close to a tangential bar edge 26 or 27.
  • the tangential distance ⁇ 1 of the pair of strips 24 from the bar edge 26 and the tangential distance ⁇ 2 from the bar edge 27 are in each case smaller than a tangential distance ⁇ 3 between the two pairs of strips 24, 25.
  • FIG. 4 Another embodiment of a circular comb unit 28 with a circular comb 29 is shown.
  • the circular comb 29 comprises a circular comb base body 30 which is slightly modified compared to the circular comb base body 6 of the circular comb unit 1.
  • Surface areas 31 are provided on the outer circumferential side 7, on which comb bars arranged tangentially one behind the other rest. These uniform surface areas 31 then represent two external contact strips 32, 33, although there is no structural delimitation within the relevant surface area 31 at the border between the adjacent comb bars 9 between the external contact strips 32, 33. In principle, however, such a structural delimitation between the external contact strips 32 and 33 could be provided in another embodiment not shown here.
  • each inner contact strip 34 is involved in two pairs of strips 35, 36.
  • pairs of strips 35, 36 are again very precise radial distance dimensions d 3 and d 4 for the distances formed between the existing on the outer circumferential side 7 and the inner circumferential side 8 of the circular comb base body 30 contact surfaces to the comb bars 9 and to the mounting surface 15.
  • the tooth tips 11 can be very uniform, i.e. with essentially the same comb radius KR, and position very precisely.
  • FIG. 5 corresponds to an enlarged section of the illustration of the circular comb unit 1 according to Fig. 1 , with the components hidden behind a holding body 37 also being shown in dashed lines.
  • These hidden components like the holding body 37 and the mounting surface 15 partially formed by the holding body 37, are components of the fastening mechanism 3.
  • the circular comb base body 6 comprises for its fastening on the shaft 5 or for connection to the shaft 5 fastening means, which in the Fig. 5 Embodiment shown as integrally formed on the inner circumferential side 8 on the two tangential base body edges 38 and 39 and protruding inward protruding fastening projections 40 and 41 are formed.
  • the pull fastening projections 40, 41 are undercut and have engagement surfaces 42, 43 tapering obliquely to the position of the deepest undercut.
  • the fastening mechanism 3 has fastening means which cooperate with the pull fastening projections 40, 41 of the circular comb base body 6 in the assembled state, so that the circular comb base body 6 is subjected to a tangential tensile force.
  • the exemplary embodiment shown includes these fastening countermeasures on the one hand fixed bearing 44 and on the other pivot bearing 45 Fig. 2 Longitudinal view shown shown, the fastening mechanism 3 in the embodiment shown comprises a total of three identically constructed sub-units 46, 47 and 48, each containing a fixed bearing 44 and a pivot bearing 45.
  • Each of these sub-units 46, 47, 48 has two upper holding bodies 37, which together form the multi-part mounting surface 15, on which the circular comb base body 6 rests with its internal contact strips 20-22 in the manner described above.
  • the holding bodies 37 are designed as holding plates, the narrow side of which forms the mounting surface 15 and has the shape of a cylinder segment.
  • the plate-shaped holding bodies 37 are designed as aluminum injection-molded or aluminum die-cast components, which results in a low weight.
  • the narrow, cylindrical segment-shaped sides of the holding bodies 37 which form the mounting surface 15 are manufactured precisely and true to size.
  • plate-shaped lower holding bodies 49 are in turn also provided, which are screwed within the respective subunits 46, 47, 48 to the respectively associated upper holding bodies 37.
  • the holding bodies 37 and 49 each have an approximately semicircular cutout which is intended for receiving the shaft 5.
  • a counterweight 50 is arranged on the undersides of the lower holding bodies 49 opposite the holding bodies 37 for mass compensation.
  • FIG. 2 shows a partially assembled state of the circular comb unit 1.
  • the three sub-units 46-48 of the fastening mechanism 3 shown in the lower part of the figure are covered when completely assembled. This cover is in Fig. 2 omitted in order to better recognize the details of the fastening mechanism 3.
  • the two upper and lower holding bodies 37 and 49 belonging to one of the sub-units 46-48 are axially spaced from one another, but in particular are each connected to one another. Preferably this connection is in one piece, e.g. by means of a narrow connecting web.
  • the mechanism for connecting the upper and lower holding bodies 37, 49, as well as the components or mechanisms of the fixed bearing 44 and the pivot bearing 45 are accommodated in the intermediate space formed thereby.
  • the fixed bearing 44 comprises a fastening rod 51, which runs axially between the two upper holding bodies 37 of the relevant sub-units 46-48 and is carried by these two upper holding bodies 37, with a fastening lug 52 which projects laterally on an upper edge and which extends to the oblique engagement surface 42 of the fastening projection 40 has corresponding oblique engagement counter surface 53.
  • the fastening lug 52 engages in the undercut of the pull fastening projection 40, the engagement surface 42 and the engagement counter surface 53 abutting one another.
  • the oblique course of these two surfaces 42, 53 leads to the fact that the circular comb base body 6 is also pressed more strongly against the mounting surface 15 in the radial direction r as the tangential tensile stress acting on it increases.
  • the same engagement mechanism is present in the swivel bearing 45 on the other tension fastening projection 41 of the circular comb base body 6.
  • the pivot bearing 45 comprises a tie rod 55 which is pivotably mounted about a pivot axis 54 and which has a tie rod nose 56 at its front end with an obliquely engaging mating surface 57. In the assembled state, the mating engagement surface 57 lies against the engagement surface 43 of the pull fastening projection 41.
  • the set screw 58 is mounted in a through hole of a rotatably mounted holding shaft 59.
  • the force by means of which the tie rod 55 presses against the fastening projection 41 of the circular comb base body 6 can be changed continuously and adjusted according to the desired specifications.
  • the circular comb base body 6 is subjected to an adjustable tangential tensile stress.
  • One acting on the circular comb base 6 in the exemplary embodiment according to FIG Fig. 1 . 2 and 5 the tangential tensile force F 1 caused by the tie rod 55 is opposed by an oppositely oriented counterforce F 2 of equal magnitude and applied by the bearings 44, 45.
  • the tensile force F 1 acting equally on the circular comb base body 6 at each circumferential position leads to a (slight) expansion of the circular comb base body 6 in the tangential direction ⁇ and to a close fitting of the circular comb base body 6 to the mounting surface 15, so that any im
  • unintentional tensions or twists or diameter tolerances of the circular comb base body 6 are compensated for.
  • This compensation is also possible in particular because the circular comb base body 6 does not cover the entire surface, but only singularly by means of that on its inner circumferential side 8 arranged inner contact strips 20-22 abuts the mounting surface 15.
  • At least the two internal contact strips 20, 21 belonging to the pairs of strips 24, 25 are provided as contact surfaces for each comb bar 9, so that the (radial) position of each comb bar 9 and thus all tooth tips 11 is also precisely defined, particularly in the case of a large tensile stress ,
  • the tooth tips 11 have a very high positional accuracy compared to the theoretical specifications of the construction documents after the practical implementation, that is to say after assembly on the shaft 5.
  • the tangential tensile stress or tensile force F 1 in connection with the close fitting of the circular comb base body 6 to the mounting surface 15 advantageously also leads to a radially inward pressing force acting on the circular comb base body 6, so that in particular also the fastening lug 19 inwards pulled and pressed against a corresponding retaining projection 19a of the comb 9 in question.
  • This force exerted by the fastening lug 19 on the holding projection 19a can preferably be so great that separate other fastening means, such as fastening strips and / or screws, for fastening the combing bars 9 on the circular comb base body 6 can be omitted. This results in assembly and cost advantages.
  • This aspect in itself also represents a separate invention.
  • FIG. 6 and 7 other exemplary embodiments are shown for loading a circular comb base body with a corresponding tangential tensile stress.
  • a circular comb base body 61 is shown with differently designed fastening means.
  • the circular comb base body 61 is also provided with the tension fastening projection 40 which projects inwards on the inner circumferential side 8 and which is part of a fixed bearing 62.
  • the corresponding fastening counter means belonging to this fixed bearing 62 of a fastening mechanism 63 provided for attachment to the shaft 5 comprise a holding block 64 which engages in the undercut of the fastening projection 40 and at least one holding screw 65, by means of which the circular comb base body 61 and the holding block 64 are screwed to one another and to a holding body 66 of the fastening mechanism 63.
  • the holding body 66 can in turn be designed as a relatively narrow component, a sufficient thickness being provided for receiving a threaded bore.
  • 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.
  • a tension bearing 67 is placed on the other tangential base body edge 39 of the circular comb base body 61.
  • At least one base body threaded bore 68 is provided on the tangential base body edge 39 and extends from the radial boundary surface on this tangential base body edge 39 as a blind hole in the material of the circular comb base body 61.
  • This at least one base body threaded hole 68 thus represents a fastening means of the circular comb base body 61.
  • the fastening mechanism 63 comprises a lag screw anchor block 69 and at least one provided in the lag screw anchor block 69 Through-hole 70 inserted through fastening screw 71.
  • the tension screw anchoring block 69 extends radially outward from the mounting surface 15 of the holding body 66 outside the combing area. It is attached to the holding body 66 in a suitable manner.
  • the circular comb base body 61 can be subjected to the desired tangential tensile stress or tensile force F 1 by screwing the fastening screw 71 more or less far into the base body threaded bore 68.
  • FIG. 7 A further exemplary embodiment of a circular comb unit 72 with a circular comb base body 73 and a fastening mechanism 74 provided for fastening on the shaft 5 is shown.
  • the fastening mechanism 74 comprises a holding body 75 which is configured similarly to the holding body 66 according to the circular comb unit 60 Fig. 6 , In particular, this holding body 75 has a sufficient axial thickness to accommodate threaded bores 76, 77 for screwing in tension fastening screws 78 and 79, respectively.
  • the threaded bores 76 in the holding body 75 are spaced apart from the threaded bores 77 by a holding body circumferential angular distance which, at least in the unassembled state, is greater than a basic body circumferential angular distance by which the basic body in the circular comb 73 existing through bores 80 on the one hand and 81 on the other are spaced apart.
  • the through bores 80 on the one hand and 81 on the two tangential edge regions of the circular comb base body 73 are tangentially closer to one another in the unmounted state than the corresponding threaded bores 76 in the holding body 75 on the one hand and 77 on the other hand.
  • the circular comb base body 73 is fastened to the mounting surface 15 of the holding body 75 by means of the tension fastening screws 78, 79 which are inserted through the through bores 80, 81 and screwed into the threaded bores 76, 77.
  • the tension fastening screws 78, 79 each have a conical head 78a, 79a, which in the assembled state is placed in the conical part of the through bores 80, 81.
  • the inner circumferential surface of the conical region of the through bores 80, 81 thus form fastening contact surfaces which run obliquely with respect to the radial direction r and also with respect to the tangential direction ⁇ .
  • the outer circumferential surfaces of the conical heads 78a, 79a of the tension fastening screws 78, 79 are fastening counter abutment surfaces with an oblique course with respect to the radial direction r and the tangential direction ⁇ .
  • These areas thus represent fastening means and fastening countermeasures for applying the tangential tensile force F 1 to the circular comb base body 73.
  • FIG. 8 and 9 is an embodiment of a further circular comb unit 82 with a circular comb 83 and the already based on the Fig. 1 . 2 and 5 explained fastening mechanism 3 shown.
  • the circular comb 83 has a circular comb base 84.
  • the circular comb base body 84 has no projections on its inner circumferential side 8. Rather, the inner circumferential side 8 is designed as a smooth cylindrical segment-shaped inner circumferential surface 85 concentric with the axis of rotation 4.
  • the mounting surface 86 intended to bear against this cylindrical segment-shaped circumferential surface 85 of the circular comb base 84 has radially outwardly projecting and tangentially spaced contact projections 87, 88, 89. Between each tangentially adjacent one of the contact projections 87-89 there is a recess 89a which also structurally separates the respective tangentially adjacent ones of the contact projections 87-89.
  • the mounting surface 86 is in turn made of several parts and is formed by the plate-shaped holding body 37.
  • visible contact tabs 87-89 there are axially spaced at the same tangential positions further corresponding contact projections 87-89 of the other axially spaced and from the illustration according to Fig. 2 visible holding body 37. All axially aligned, spaced-apart contact projections 87 or 88 or 89 thus form rows of contact projections 90 or 91 or 92.
  • the contact projections 87-89 of all holding bodies 37 form the only contact surfaces to the inner peripheral surface 85 of the circular comb base body 84.
  • the external contact strips 16, 17 also provided in the circular comb base body 84 for the engagement of the combing bars 9 are assigned to the row of contact projections 90 and 91, respectively.
  • the external contact strip 16 and the row of contact projections 90 are in turn in the same or at least an overlapping tangential position, as are the external contact strips 17 and the row of contact projections 91. Therefore, essentially the same advantages result with regard to the exact positioning of the tooth tips 11 as above described in the embodiment of the circular comb unit 1.
  • the external contact strips 16 are each assigned to one of the rows of contact projections 90, whereby a pair of strips / projections 93 is formed in each case.
  • the external contact strips 17 are each assigned to one of the contact projection rows 91, whereby a pair of strips / projections 94 is formed in each case.
  • FIG. 10 The exemplary embodiment shown of such an alternative circular comb unit 95 with a circular comb base body 96 are similar to the circular comb unit 28 combined or double-acting contact projections 97 and combined or double-acting contact projection rows 98 formed therefrom are provided on the mounting surface 86.
  • the rows of contact projections 98 each form a pair of strips / projections 99 with one of the outer contact strips 33 of the basic comb body 96 and each pair of strips / projections 100 with one of the outer contact strips 33.
  • the mode of operation and the advantages are referred to in the explanations the circular comb unit 28, which is constructed similarly in this respect.
  • FIG. 11 Another exemplary embodiment of a circular comb unit 101 of a combing machine for combing textile fibers is shown.
  • the circular comb unit 101 also comprises a circular comb 102 and a fastening mechanism 103, by means of which the circular comb 102 on the in Fig. 11 is not attached to the illustrated shaft 5 under the action of a tangential tensile stress or tensile force F 1 .
  • the circular comb 102 is constructed similarly to that of the circular comb unit 60 according to FIG Fig.
  • the circular comb base body 104 has an integrally formed and attached to it on its first tangential base body edge 38 the outer circumferential side 7 outwardly projecting tensile fastening projection 105.
  • the tensile fastening projections 40, 41 each project inwards on the inner circumferential side 8.
  • the circular comb base body 104 On its second tangential base body edge 39, the circular comb base body 104 is provided with a thread extension 106, which is also formed in one piece and is equipped with the at least one base body threaded bore 68, which, starting from the radial boundary surface, acts as a blind hole in the material of the circular comb base body 104 extends.
  • This at least one base body threaded bore 68 like the outwardly protruding tension fastening projection 105, each represents a fastening means of the Circular comb base body 104, which are designed to apply a tangential tensile force F 1 to the circular comb base body 104 in the state mounted on the shaft 5.
  • the thread extension 106 of the circular comb base body 104 containing the base body threaded bore 68 is also such a fastening means.
  • a counterweight 107 is included in the fastening mechanism 103.
  • This counterweight 107 which is designed as a separate component, is in particular a block of material which extends continuously in the axial direction.
  • the counterweight 107 is arranged essentially on the side of the shaft 5 opposite the combing area.
  • FIG. 1 Further components of the fastening mechanism 103 are the (upper) holding bodies 109 which form the mounting surface 15, which essentially correspond to the holding bodies 37, 66 and 75 described above, and two holding clips 110 and 111 designed as hollow profiles.
  • the holding clips 110, 111 are by means of two holding pins 112 pivotally mounted on the counterweight 107, in particular in each case there is only limited pivotability.
  • the retaining clip 110 runs out in a hook shape at the upper end facing away from the attachment point on the counterweight 107, as a result of which a clip nose 113 is formed, which engages in an undercut of the tension fastening projection 105.
  • the second retaining clip 111 is designed differently from the first retaining clip 110, in particular at its upper end facing away from the fastening point on the counterweight 107. At this upper end it comprises a cross strut 114 which is provided with through bores 115. Through these through holes 115 are similar to that in FIG Fig. 6 Embodiment of the circular comb unit 60 described inserted through the fastening screws 71 in order to screw them into the base body threaded bore 68 in the threaded extension 106 of the base comb 104. In this respect, the cross strut 114 of the holding clip 111 corresponds to the lag screw anchoring block 69 of the circular comb unit 60 Fig.
  • the cross strut 114 can also be understood as such a tension screw anchoring block.
  • the circular comb 102 and in particular the circular comb base 104 thereof are subjected to the desired tangential tensile force F 1 .
  • this connection of the counterweight 107 to the circular comb 102 which is provided via the two holding clamps 110 and 111, results in the counterweight 107 being clamped on the shaft 5.
  • This clamping represents a second partial fastening of the counterweight 107 on the shaft 5.
  • the embodiment is dispensed with the screw connections. There is then in particular only the clamp connection.
  • the circular comb unit 101 or its fastening mechanism 103 comprises fastening countermeans which cooperate with the fastening means mentioned above in such a way that the desired tensile force is applied to the circular comb base body 104.
  • the fastening countermeans are, in particular, the holding clamp 110 with the clamping lug 113, the holding clamp 111 with the cross strut 114 and the through bores 115 contained therein, and also the tension fastening screws 71.
  • FIG. 12 Another embodiment of a circular comb unit 116 of a combing machine for combing textile fibers is shown.
  • the circular comb unit 116 comprises a circular comb 117 and a fastening mechanism 118 for attaching the circular comb 117 to the surface in FIG Fig. 12 likewise not shown with shaft 5.
  • the circular comb 117 contains a circular comb base body 119, on the outer circumferential side 7 of which several (in the exemplary embodiment shown six) comb bars 120 are glued. In this respect, the attachment of the combing bars 120 to the circular comb base body 119 differs from the previously described exemplary embodiments.
  • Another slide-in is that there is no structured surface contour either on the inner circumferential side 8 of the circular comb base body 119 or on the mounting surface 15 of the fastening mechanism 118. There is therefore a lack of contact strips or contact projections. Instead, the inner circumferential side 8 of the circular comb base body 119 is designed as a purely cylindrical segment-shaped surface. The same applies to the (again multi-part and arranged concentrically to the axis of rotation 4) mounting surface 15.
  • the circular comb base body 119 has the usual manufacturing tolerances in the unassembled state.
  • the circular comb base body 119 is subjected to a particularly high tangential tensile force F 3 in the assembled state.
  • This tensile force is so high that the circular comb base 119 deforms elastically.
  • the stress loading caused by this tangential tensile force F 3 of the circular comb base body 119 is in particular about 50% of the yield strength of the aluminum material used.
  • FIG. 13 An enlarged section of the circular comb unit 116 is shown in the not yet fully assembled state, in particular when the circular comb base body 119 has not yet been subjected to tensile force.
  • the circular comb base body 119 on its inner circumferential side 8 has a cylindrical circumferential inner circumferential surface with an inner radius R i . Based on an ideal production, this inner radius would be exactly the same everywhere and would assume the inner radius setpoint R iS everywhere. In practice, however, there are no such ideal conditions.
  • the inner radius R i is subject to production-related local fluctuations.
  • the actual value of the inner radius R depends on the tangential and axial Location coordinates ⁇ or z. This location dependency can be described by the function expression R i ( ⁇ , z). In Fig.
  • These local inner inner radii R i ( ⁇ 1 , z 0 ), R i ( ⁇ 2 , z 0 ), R i ( ⁇ 3 , z 0 ) and R i ( ⁇ 4 , z 0 ) clearly differ from one another. The reason for this are the manufacturing tolerances mentioned.
  • the local radius fluctuations lie within ⁇ 0.5% of the internal radius setpoint R iS .
  • the local inner radius R i ( ⁇ 1 , z 0 ) is exactly the same as the inner radius setpoint R iS .
  • the circular comb base body 119 does not initially rest against the mounting surface 15 of the fastening mechanism 118 as desired. Due to the application of the high tangential tensile force F 3 , the circular comb base body 119 is elastically deformed to such an extent that the areas of the inner circumferential surface of the circular comb base body 119 that deviate from the exact cylindrical segment-shaped geometry are pressed against the mounting surface 15 and then there in the final assembly condition. According to the in Fig. 13 with the enlarged triangle of forces entered, the high tangential tensile force F 3 is divided into a radial force component F res_r and a tangential force component F res_ ⁇ . The radial force component F res_r causes the (elastic) contact pressure also on the defective areas of the inner circumferential surface of the circular comb base body 119 on the mounting surface 15.
  • this inner peripheral surface of the associated circular comb base body has a structured surface contour and is equipped, for example, with contact strips. This structuring then ensures, in particular, that the elastic deformation of the relevant circular comb base body takes place at least for the most part at locations which are predetermined and thus defined due to the construction. This enables the material load to be standardized.
  • the circular comb unit 116 also has some further differences in the fastening mechanism 118 compared to the circular comb unit 101.
  • the fastening mechanism 118 also comprises a counterweight, the counterweight in the fastening mechanism 118 being designed as an integral part of a combined clamp-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, namely again preferably by means of screw connections and a clamp connection.
  • the bracket counterweight body 121 is designed as a hollow profile, in particular as an extruded hollow profile, which extends continuously in the axial direction of the circular comb unit 116.
  • the circular comb base body 119 is configured essentially the same as the circular comb base body 104. It has an outwardly projecting tension fastening projection 105.
  • a clip section 122 of the clip counterweight body 121 is equipped on its outer edge with a clip nose 113, which engages in the assembled state on the pull fastening projection 105 of the circular comb base body 119.
  • an eccentric mechanism for fastening the circular comb base body 119 under tension is provided, namely an eccentric mechanism.
  • a plurality of receiving eyelets 123 arranged axially one behind the other are integrally formed on the second tangential base body edge 39 of the circular comb base body 119.
  • an eccentric section 124 of the clamp counterweight body 121 facing this second tangential counter body edge 39 in the assembled state has a plurality of receiving counter eyelets 125 which are also integrally formed on the clamp counterweight body 121 and are molded axially one behind the other.
  • the receiving eyelets 123 and the receiving counter-eyelets 125 are interlocked.
  • one of the receiving eyes 123 of the circular comb base body 119 alternates with one of the receiving counter eyes 125 of the eccentric section 124.
  • the receiving eyelets 123 each have an eyelet through opening 126
  • the receiving counter eyelets 125 each have a counter eyelet through opening 127.
  • the eyelet through openings 126 and the counter eyelet through openings 127 at least partially overlap.
  • an eccentric tensioning rod 128 is inserted through the eyelet through openings 126 and the counter eyelet through openings 127 in its non-tensioning transverse position.
  • the eccentric tensioning rod 128 is brought into its exciting longitudinal position by a corresponding rotary movement about its longitudinal axis, as a result of which the circular comb base body 119 and the bracket counterweight body 121 are moved toward or towards one another, and the degree of overlap of the eyelet through openings 126 and the counter eyelet through openings 127 is enlarged.
  • the circular comb base 119 is subjected to the high tangential tensile force F 3 .
  • the circular comb base body 119 also has fastening means with the outwardly projecting tension fastening projection 105 and the receiving eyes 123, which are designed to apply the high tangential tensile force F 3 to the circular comb base body 119 in the state mounted on the shaft 5.
  • fastening countermeans interacting with these fastening means are provided for the same purpose.
  • the latter is, in particular, the clamp section 122 with the clamp nose 113, the eccentric section 124 with the receiving counter eyelets 125 and the eccentric tensioning rod 128 which can be rotated and releasably inserted about its longitudinal axis.
  • the eccentric tensioning rod 128 is first rotated back into its non-tensioning transverse position, as a result of which the tensile force load in the basic circular comb 119 disappears.
  • the eccentric tie rod 128 can then be easily removed from the eyelet through openings 126 and pull out the counter eyelet through holes 127.
  • the clamp counterweight body 121 and then also the circular comb 117 can be removed.
  • FIG. 15 Another exemplary embodiment of a circular comb unit 129 of a combing machine for combing textile fibers is shown. It comprises the substantially identical circular comb 2 and the likewise essentially identical fastening mechanism 3 of the circular comb unit 1 according to FIG 1 to 5 , On the side of the shaft 5 opposite the combing area, the circular comb unit 129 additionally comprises a tear-off segment 130 with an essentially cylindrical outer tear-off jacket surface 131. The tear-off segment 130 is fastened to the shaft 5 by means of a second fastening mechanism 132.
  • This second fastening mechanism is essentially constructed in the same way as the first fastening mechanism 3 provided for fastening the circular comb 2.
  • the two fastening mechanisms 3 and 132 are screwed to one another in such a way that there is a clamping connection on the shaft 5. If required, an optional additional screw connection to the shaft 5 can be provided.
  • the tear-off segment 130 is also fastened to the shaft 5 when a tangential tensile force F 4 is applied .
  • the tangential tensile force F 4 caused by the tie rod 55 of the fastening mechanism 132 is opposed by an oppositely oriented, counter-force F 5 of equal magnitude and applied by the bearings 44, 45 of the fastening mechanism 132.
  • the tear-off segment 130 serves in cooperation with an in Fig. 15 schematically shown tear-off roller 133 of the comber for tearing off the combed fiber beard. In this way, a second tear-off roller can be saved.
  • a combing machine working according to this principle, the so-called Heilmann principle, is for example in the WO 2010/012112 A1 described. It was recognized that the fastening mechanism 3 initially provided here in connection with the fastening of the circular comb 2 subjected to tensile force can be used essentially in the same manner and with the same advantages with regard to the positioning accuracy also when fastening the tear-off segment 130.
  • a small but not significant difference from the circular comb unit 1 is that 37 through openings 134 are present in the holding bodies.
  • the through openings 134 in the holding bodies 37 of the fastening mechanism 3 of the circular comb 2 remain unequipped, whereas in the through openings 134 the holding body 37 of the fastening mechanism 132 of the tear-off segment 130 can be inserted as required Fig. 15 cannot be used with the counterweight shown.
  • the division of the peripheral area into a zone with a combing function and another zone with a tear-off function can also be carried out differently than with the circular comb unit 129.
  • the circular comb unit 129 with a division of the circumferential area into two has an exemplary embodiment
  • Such an alternative circular comb unit divides the circumferential area into two zones with a combing function and two zones with a tear-off function, the zones alternating functionally when viewed in the circumferential direction. A zone with one function is always followed by a zone with the other function.
  • a zone with a 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 °.
  • a comb is arranged in a zone with a combing function and a tear-off segment is arranged in a zone with a tear-off function. In principle, an even finer division of the circumferential area is also possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (13)

  1. Peigne circulaire destiné à une peigneuse servant au peignage de fibres textiles, et destiné à être fixé à un arbre (5) de la peigneuse pouvant tourner autour d'un axe de rotation (4), comprenant
    a) un corps de base (6 ; 30 ; 61 ; 73) du peigne circulaire présentant un côté périphérique extérieur (7) et un côté périphérique intérieur (8),
    b) plusieurs barres de peigne (9) disposées sur le côté périphérique extérieur (7) du corps de base (6 ; 30 ; 61 ; 73) du peigne circulaire, lesquelles barres de peigne recouvrent, dans leur totalité, un segment angulaire périphérique du peigne et définissent une partie peignage du peigne circulaire (2 ; 29),
    c) au moins deux bandes de contact extérieures (16, 17 ; 32, 33) par barre de peigne (9) orientées axialement dans la direction de l'axe de rotation (4) et espacées les unes des autres tangentiellement par rapport audit axe (4) étant prévues sur le côté périphérique extérieur (7) du corps de base du peigne circulaire (6 ; 30 ; 61 ; 73), lesquelles bandes de contact extérieures forment des surfaces de contact de barres de peigne sur lesquelles repose la barre de peigne (9) concernée,
    d) des bandes de contact intérieures (20, 21, 22 ; 34) orientées axialement dans la direction de l'axe de rotation (4), en saillie radialement vers l'intérieur par rapport audit (4) et espacées les unes des autres tangentiellement par rapport à l'axe de rotation (4) étant prévues sur le côté périphérique intérieur (8) du corps de base du peigne circulaire (6 ; 30 ; 61 ; 73), lesquelles bandes de contact intérieures forment au moins à l'intérieur de la partie peignage les seules surfaces de contact de montage sur l'arbre du corps de base (6 ; 30 ; 61 ; 73) du peigne circulaire pour son appui direct ou indirect sur l'arbre (5) ou pour son raccordement à celui-ci,
    e) au moins certaines des bandes de contact extérieures (16, 17 ; 32, 33) étant associées respectivement à l'une des bandes de contact intérieures (20, 21 ; 34) avec laquelle elle forme respectivement une paire de bandes (24, 25 ; 35, 36), la bande de contact extérieure (16, 17 ; 32, 33) et la bande de contact intérieure (20, 21 ; 34) de chacune des paires de bandes (24, 25 ; 35, 36) se chevauchant au moins en partie dans leur direction tangentielle, caractérisé en ce qu'au moins deux paires de bandes (24, 25 ; 35, 36) sont respectivement prévues par barre de peigne (9), et
    f) deux paires de bandes (24, 25 ; 35, 36) réalisées sous la forme de paires de bandes de bord étant respectivement prévues par barre de peigne (9), une distance tangentielle (ϕ1, ϕ2) d'un bord de barre tangentiel (26, 27) de la barre de peigne (9) concernée étant inférieure à une distance tangentielle (ϕ3) entre les deux paires de bandes de bord pour chacune des paires de bandes de bord.
  2. Peigne circulaire selon la revendication 1, caractérisé en ce que, exactement deux paires de bandes (24, 25 ; 35, 36) sont respectivement prévues par barre de peigne (9).
  3. Peigne circulaire selon l'une des revendications précédentes, caractérisé en ce que, au moins dans l'une des paires de bandes (24), la bande de contact extérieure (16) et la bande de contact intérieure (20) sont respectivement disposées tangentiellement dans la même position et présentent la même dimension tangentielle.
  4. Peigne circulaire selon l'une des revendications précédentes, caractérisé en ce que les saillies des bandes de contact intérieures (20, 21 ; 34) présentent une hauteur de saillie radiale, mesurée perpendiculairement à l'axe de rotation (4), comprise entre 0,25 et 5 mm, en particulier entre 0,5 et 2 mm.
  5. Peigne circulaire selon l'une des revendications précédentes, caractérisé en ce que le corps de base (6 ; 61 ; 73) du peigne circulaire est équipé de moyens de fixation (40, 41 ; 68 ; 80, 81) pour sa fixation à l'arbre (5), et en ce que ces moyens de fixation (40, 41 ; 68 ; 80, 81) sont conçus pour soumettre le corps de base (6 ; 61 ; 73) du peigne circulaire à une force de traction tangentielle (F1) lorsqu'il est fixé à l'arbre.
  6. Ensemble formant peigne circulaire destiné à une peigneuse servant au peignage de fibres textiles, comprenant
    a) un arbre (5) pouvant tourner autour d'un axe de rotation (4), et
    b) un peigne circulaire (2 ; 29) fixé à l'arbre (4) conformément à l'une des revendications précédentes,
    c) l'ensemble formant peigne circulaire (1 ; 28 ; 60 ; 72) comprenant, pour la fixation du peigne circulaire (2 ; 29) à l'arbre (5), au moins une surface de montage (15) lisse en forme de segment de cylindre, disposée concentriquement à l'axe de rotation (4), sur laquelle reposent les bandes de contact intérieures (20, 21, 22 ; 34) du corps de base (6 ; 30 ; 61 ; 73) du peigne circulaire.
  7. Ensemble formant peigne circulaire selon la revendication 6, comportant un peigne circulaire selon la revendication 5, caractérisé en ce que les moyens de fixation (40, 41 ; 68 ; 80, 81) du corps de base (6 ; 61 ; 73) du peigne circulaire coopèrent avec les moyens de fixation (51 ; 54 ; 64, 65 ; 76, 77, 78, 79 ; 69, 71) de l'ensemble formant peigne circulaire (1 ; 60 ; 72) de telle manière que le corps de base (6 ; 61 ; 73) du peigne circulaire soit soumis à une force de traction tangentielle (F1).
  8. Ensemble formant peigne circulaire destiné à une peigneuse servant au peignage de fibres textiles, comprenant :
    a) un arbre (5) pouvant tourner autour d'un axe de rotation (4),
    b) un peigne circulaire (83) fixé à l'arbre (5), comprenant :
    b1) un corps de base (84 ; 96) du peigne circulaire présentant un côté périphérique extérieur (7) et un côté périphérique intérieur (8) réalisé sous la forme d'une surface périphérique intérieure (85) lisse en forme de segment de cylindre, disposée concentriquement à l'axe de rotation (4), et
    b2) plusieurs barres de peigne (9) disposées sur le côté périphérique extérieur (7) du corps de base (84 ; 96) du peigne circulaire, lesquelles barres de peigne recouvrent, dans leur totalité, un segment angulaire périphérique du peigne et définissent une partie peignage du peigne circulaire (83),
    c) au moins une surface de montage (86) disposée concentriquement à l'axe de rotation (4) et présentant une forme de base sensiblement en forme de segment de cylindre,
    d) au moins deux bandes de contact extérieures (16, 17 ; 32, 33) par barre de peigne (9) orientées axialement dans la direction de l'axe de rotation (4) et espacées les unes des autres tangentiellement par rapport audit axe (4) étant prévues sur le côté périphérique extérieur (7) du corps de base du peigne circulaire (84 ; 96), lesquelles bandes de contact extérieures forment des surfaces de contact de barres de peigne sur lesquelles repose la barre de peigne (9) concernée,
    e) la surface de montage (86) présentant des saillies de contact (87, 88, 89, 97) orientées axialement dans la direction de l'axe de rotation (4), en saillie radialement vers l'extérieur par rapport audit axe (4) et espacées tangentiellement par rapport à l'axe de rotation (4), lesquelles saillies de contact forment au moins à l'intérieur de la partie peignage les seules surfaces partielles de la surface de montage (86) sur lesquelles la surface de montage (86) repose sur la surface périphérique intérieure (85) du corps de base (84 ; 96) du peigne circulaire pour le raccordement direct ou indirect du corps de base (84 ; 96) à l'arbre (5),
    f) au moins certaines des bandes de contact extérieures (16, 17 ; 32, 33) du corps de base (84 ; 96) du peigne circulaire étant associées respectivement soit à l'une des saillies de contact (87, 88 ; 97) de la surface de montage (86) soit, si plusieurs saillies de contact (87, 88 ; 97) de la surface de montage (86) sont alignées axialement les unes derrière les autres sous la forme de rangées de saillies de contact (90, 91 ; 99, 100), mais espacées les unes des autres, à l'une de ces rangées de saillies de contact (90, 91 ; 98) de la surface de montage (86), et la bande de contact extérieure (16, 17 ; 32, 33) concernée formant respectivement une paire de bandes/saillies (93, 94 ; 99, 100) conjointement avec la saillie de contact (87, 88 ; 97) associée ou la rangée de saillies de contact (90, 91 ; 98) associée, la bande de contact extérieure (16, 17 ; 32, 33) du corps de base (84 ; 96) du peigne circulaire et la saillie de contact (87, 88 ; 97) de la surface de montage (86) ou la rangée de saillies de contact (90, 91, 98) de la surface de montage (86) de chacune des paires de bandes/saillies (93, 94 ; 99, 100) se chevauchant au moins en partie dans leur dimension tangentielle, et au moins deux paires de bandes/saillies (93, 94 ; 99, 100) étant respectivement prévues par barre de peigne (9), et
    g) deux paires de bandes/saillies (93, 94 ; 99, 100) réalisées sous la forme de paires de bords étant respectivement prévues par barre de peigne (9), une distance tangentielle d'un bord de barre tangentielle de la barre de peigne concernée étant inférieure à une distance tangentielle entre les deux paires de bords, dans chacune des paires de bords.
  9. Ensemble formant peigne circulaire selon la revendication 8, caractérisé en ce que exactement deux paires bandes/saillies (93, 94 ; 99, 100) sont respectivement prévues par barre de peigne (9).
  10. Ensemble formant peigne circulaire selon l'une des revendications 8 et 9, caractérisé en ce qu'au moins dans l'une des paires bandes/saillies (93), les bandes de contact extérieures (16) du corps de base du peigne circulaire (84) et de la saillie de contact (87) de la surface de montage (86) ou la rangée de saillies de contact (90) de la surface de montage (86) sont disposées respectivement tangentiellement dans la même position et présentent la même dimension tangentielle.
  11. Ensemble formant peigne circulaire selon l'une des revendications 8 à 10, caractérisé en ce que les saillies de contact (87, 88, 89 ; 97) présentent une hauteur de saillie radiale, mesurée perpendiculairement à l'axe de rotation (4), comprise entre 0,25 et 5 mm, en particulier entre 0,5 et 2 mm.
  12. Ensemble formant peigne circulaire selon l'une des revendications 8 à 11, caractérisé en ce que le corps de base (84) du peigne circulaire est équipé de moyens de fixation (40, 41) destinés à sa fixation à l'arbre (5) et ces moyens de fixation (40, 41) sont conçus de telle manière que le corps de base (84) du peigne circulaire soit solidement fixé tangentiellement à l'arbre (5).
  13. Ensemble formant peigne circulaire selon la revendication 12, caractérisé en ce que les moyens de fixation (40, 41) du corps de base (84) du peigne circulaire coopèrent avec les moyens de fixation (51 ; 54) de l'ensemble formant peigne circulaire (82) de telle manière que le corps de base du peigne circulaire (84) soit soumis à une force de traction tangentielle (F1).
EP15720083.3A 2014-05-02 2015-04-30 Peigne circulaire et ensemble formant peigne circulaire muni d'un peigne circulaire fixé à un arbre Active EP3137660B1 (fr)

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DE102014208300 2014-05-02
PCT/EP2015/059596 WO2015166085A2 (fr) 2014-05-02 2015-04-30 Peigne circulaire et ensemble formant peigne circulaire muni d'un peigne circulaire fixé à un arbre

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Publication number Priority date Publication date Assignee Title
DE102017121605A1 (de) * 2017-09-18 2019-03-21 Trützschler GmbH & Co Kommanditgesellschaft Rundkammwalze für eine Kämmmaschine
CH715429A1 (de) * 2018-10-04 2020-04-15 Graf Cie Ag Rundkammträger für eine Kämmmaschine
DE102022210530A1 (de) * 2022-10-05 2024-04-11 Staedtler + Uhl Kg Rundkamm für eine Kämmmaschine

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BE527113A (fr) * 1954-03-09 1954-03-31
DE282989C (fr) * 1914-01-25 1915-03-27
FR565907A (fr) * 1922-05-11 1924-02-07 John Hetherington & Sons Ltd Perfectionnements aux machines à peigner le coton, la laine et autres textiles
US1892317A (en) * 1929-08-03 1932-12-27 Nasmith John William Combing machine for textile fibers
US2605512A (en) * 1950-12-27 1952-08-05 Terrell Mach Co Comber half-lap
US2977642A (en) * 1958-04-28 1961-04-04 Saco Lowell Shops Textile combing machines
JPH0220217Y2 (fr) * 1987-12-12 1990-06-01
EP0342450B1 (fr) 1988-05-20 1992-01-08 Maschinenfabrik Rieter Ag Segment d'un peigne circulaire à attacher sur le cylindre de peignage d'une peigneuse
CH683190A5 (de) 1991-05-10 1994-01-31 Rieter Ag Maschf Rundkamm für eine Kämmaschine.
DE29720656U1 (de) * 1997-11-21 1998-01-22 Staedtler & Uhl, 91126 Schwabach Distanzelement für einen Kreiskamm einer textilen Kämm-Maschine
CH699285A2 (de) 2008-07-31 2010-02-15 Rieter Ag Maschf Kämmvorrichtung zum Kämmen eines Fasermaterials.
EP2426239B1 (fr) * 2010-09-04 2013-03-06 Maschinenfabrik Rieter AG Peigne rond d'une peigneuse
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WO2015166085A3 (fr) 2015-12-30
WO2015166085A2 (fr) 2015-11-05
EP3680371A1 (fr) 2020-07-15
EP3137660A2 (fr) 2017-03-08
EP3680371B1 (fr) 2023-02-22

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