EP2085505B1 - Fixing comb of a comb machine - Google Patents

Fixing comb of a comb machine Download PDF

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Publication number
EP2085505B1
EP2085505B1 EP20080018741 EP08018741A EP2085505B1 EP 2085505 B1 EP2085505 B1 EP 2085505B1 EP 20080018741 EP20080018741 EP 20080018741 EP 08018741 A EP08018741 A EP 08018741A EP 2085505 B1 EP2085505 B1 EP 2085505B1
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EP
European Patent Office
Prior art keywords
top comb
comb
carrier
stiffening element
fixkammträgers
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EP20080018741
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German (de)
French (fr)
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EP2085505A3 (en
EP2085505A2 (en
Inventor
Flavio Cavadini
Ueli Stutz
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
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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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/02—Gill boxes or other drafting machines employing fallers or like pinned bars
    • D01H5/12—Details
    • D01H5/14—Pinned bars

Definitions

  • the invention relates to a fixed comb of a combing machine with a Fixkammarme which has a holding portion which is connected to a support plate on which a pin strip, or a Fixkammgarnitur is attached.
  • the comb of a combing machine is subjected to alternating dynamic loads during the combing process, which in part make themselves noticeable in an elastic deformation of the fixing comb, in particular in its longitudinal direction. This in turn affects the attachment points of the Fixkammes in the combing machine. This means that due to the occurring elastic deflection of the fixed comb, transversely to its longitudinal direction, relative movements occur between the fixedly mounted holding elements (eg holding clips) and the holding section of the fixing comb. As a result, the holding section is subject to wear in this area.
  • the number of combing heads eight fixed combs are used on a combing machine.
  • the distance between the Fixkammgarnitur, or the pin strip is kept as low as possible to the subsequent Abreisswalzen. If, as a result of the dynamic load transversely to the longitudinal direction of the top comb, a deflection occurs, this must be taken into account in the positioning of the top comb during installation. This means that the minimum distance of the fixed comb to the tear-off rollers is to be selected larger by the amount of deflection in order to avoid a collision of the fixed comb during its combing position with the tear-off rollers.
  • the EP 0 580 549 A1 discloses a fixed comb having the features of the preamble of claim 1.
  • the invention has the object to avoid the disadvantages mentioned and to propose a compact design of a fixed comb with increased bending strength, whereby the relative movements between the holding portion of the Fixkammes and its fasteners are minimized. At the same time, care must be taken to ensure that the mass of the top comb is changed only slightly and that the narrow geometrical mounting mass of the top comb between the nipper unit and the puller rollers is taken into account.
  • longitudinal direction refers to the length of the fixed comb, which extends in the installation position in the combing machine transversely to the direction of flow of the fiber material.
  • the mass of the fixed comb is increased slightly.
  • the stiffening element can be mounted in the area in which it is not a hindrance despite the tight installation conditions.
  • the stiffening element is therefore - seen in the installation position of the fixed comb - mounted on the side of the support plate, which faces the subsequent Abreisswalzen. This corresponds - seen in the flow direction of the fiber material - the front side of the support plate.
  • the stiffening element - viewed in the longitudinal direction of the Fixkammippos - extending from the center of the Fixkammmiks in the direction of its two ends and has a distance from the ends of the Fixkammmiks. This makes it possible that in the respective remaining free area between the ends of the stiffening element and the respective end of the Fixkammembls holding elements for fixing the Fixkammes, as previously known, can be used.
  • the stiffening element is connected to the holding section and the carrier plate.
  • the stiffening element is formed together with the holding portion and the support plate as a hollow profile.
  • the stiffening element is formed together with the holding portion and the support plate as a hollow profile.
  • an increase in the bending strength of the Fixkammmiks is achieved transversely to its longitudinal extent, which also has an advantageous effect on the constant maintenance of the position of the tips of the Fixkammgarnitur during the tearing or combing process.
  • the hollow profile-seen in cross-section has a cross-sectional area which decreases in the direction of the tips of the needle strip.
  • the fixed comb carrier formed from the holding section, the carrier plate and the stiffening element is manufactured in one piece.
  • the extruded profile may consist of a non-metallic material for weight reduction, z. B. of an aluminum alloy.
  • Fig. 1 shows a cross section of an inventively designed Fixkammongs 2 a Fixkammes 1 with a combing machine, not shown.
  • the Fixkammong 2 is formed from a holding portion 4, to which a support plate 5 is attached.
  • the holding section 4 has the cross-sectional shape of an open profile with an arcuate outer surface.
  • the holding section 4 and the carrier plate 5 may be made of one piece (eg of plastic or of an extruded aluminum alloy).
  • a stiffening element 11 is attached, which, as from FIG. 2 can be seen almost over the entire length of the Fixkammmiks 2 extends. It would also be conceivable to provide a plurality of mutually spaced stiffening elements, which are mounted over the length of the Fixkammismes 2. However, the greatest effect in terms of increasing the flexural strength is obtained when, as in FIG. 2 shown the stiffening element 11 is formed continuously. How out FIG.
  • the stiffening element 11 is connected to the holding section 2 at one end and to the carrier plate 5 at the other end. Together with the holding portion 4 and the support plate 5, the stiffening element 11 forms a hollow profile with a triangular cross-section.
  • a Fixkammgarnitur 7 is attached via a plurality of screws 14 and a clamping plate 15. According to the number of screws 14 threaded holes 16 are mounted in the support plate 15. About the screws 14 and the clamping plate 15, the clothing 7 is clamped on the support plate 5.
  • the clothing 7 of the fixed comb 1 can be made of strung pinstripes, of juxtaposed stamped or embossed sheets or in any other form. However, this is irrelevant to the presentation of the invention.
  • FIG. 2a schematically shows how the deflection b of the support plate 5 of the Fixkammismes 2 by the resulting force F takes place in the flow direction D.
  • the fiber tuft combed out by means of a circular comb is subsequently pulled in the flow direction D over the tear-off rollers through the clothing 7 of the fixing comb 1 during the tearing process.
  • deflection b of the carrier plate 5 occurs, in particular in the middle region of the fixed comb 2. This is an elastic deflection which oscillates back after the force F has been eliminated. Ie. at a Kammspielteil of z. B. 500 KS / min, this process is 500 times per minute.
  • FIG. 3 View Y
  • the retaining clip 21 is formed at its free end so that it a latching position when reaching over the arcuate outer contour of the holding section 4 occupies.
  • the function of this retaining clip is also from the embodiments of DE-102 52 098 A1 refer to.
  • the dashed line 21 'in FIG. 3 shows the retaining clip 21 in its unlocked position, wherein the Fixkammisme 2 can be taken out of a slot 19 of a vertical receptacle 18 of the Fixkammhalters 17 upwards.
  • two such Fixkammhalter 17 are attached to a nipper unit, not shown.
  • the holding section 4 in the region of its fastenings 21 will be closed by the described relative movements.
  • the deflection b is considerably reduced and thus reduced the risk of wear in the area of stops. By reducing the deflection to a minimum, it is also ensured that the geometrical combing conditions remain substantially constant over the entire length of the fixing comb 1.
  • the stiffening element 12 may be formed from a non-metallic material (eg plastic) so that the mass of the fixed comb to be moved is increased only insignificantly by the attachment of an additional stiffening element.
  • a non-metallic material eg plastic

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

Description

Die Erfindung bezieht sich auf einen Fixkamm einer Kämmmaschine mit einem Fixkammträger, welcher einen Halteabschnitt aufweist, der mit einer Trägerplatte verbunden ist, an welcher ein Nadelstreifen, bzw. eine Fixkammgarnitur befestigt ist.The invention relates to a fixed comb of a combing machine with a Fixkammträger which has a holding portion which is connected to a support plate on which a pin strip, or a Fixkammgarnitur is attached.

Der Fixkamm einer Kämmmaschine ist während dem Kämmprozess wechselnden dynamischen Belastungen ausgesetzt, welche sich zum Teil in einer elastischen Verformung des Fixkammes insbesondere in seiner Längsrichtung bemerkbar machen. Dies wiederum wirkt sich auf die Befestigungsstellen des Fixkammes in der Kämmmaschine aus. Das heisst, durch die auftretende elastische Durchbiegung des Fixkammes, quer zu seiner Längsrichtung, entstehen Relativbewegungen zwischen den fix gelagerten Halteelementen (z. B. Halteklammern) und dem Halteabschnitt-des Fixkammes. Dadurch ist der Halteabschnitt in diesem Bereich einem Verschleiss unterworfen. Üblicherweise sind entsprechend der Anzahl der Kämmköpfe acht Fixkämme auf einer Kämmmaschine eingesetzt.The comb of a combing machine is subjected to alternating dynamic loads during the combing process, which in part make themselves noticeable in an elastic deformation of the fixing comb, in particular in its longitudinal direction. This in turn affects the attachment points of the Fixkammes in the combing machine. This means that due to the occurring elastic deflection of the fixed comb, transversely to its longitudinal direction, relative movements occur between the fixedly mounted holding elements (eg holding clips) and the holding section of the fixing comb. As a result, the holding section is subject to wear in this area. Usually, according to the number of combing heads eight fixed combs are used on a combing machine.

Um den Verschleiss herabzusetzen, wurde in der DE-102 52 098 A1 vorgeschlagen, zwischen dem Fixkamm und dem Fixkammhalter einen Verschleissschutz anzubringen. Dadurch konnte zwar der Verschleiss in diesem Bereich vermindert werden, die dynamischen Belastungen, bzw. die Durchbiegung sind jedoch gleich geblieben. Das heisst, die Ursache des Verschleisses wurde hiermit nicht beseitigt.In order to reduce the wear, was in the DE-102 52 098 A1 proposed to install a wear protection between the Fixkamm and the fixed comb holder. Although it was possible to reduce the wear in this area, the dynamic loads or the deflection have remained the same. This means that the cause of the wear has not been removed.

Um ein optimales Kämmergebnis durch den Fixkamm zu erzielen, ist es notwendig, dass der Abstand zwischen der Fixkammgarnitur, bzw. dem Nadelstreifen zu den nachfolgenden Abreisswalzen möglichst gering gehalten wird. Sofern durch die dynamische Belastung quer zur Längsrichtung des Fixkammes eine Durchbiegung entsteht, ist diese in der Positionierung des Fixkammes beim Einbau mit zu berücksichtigen. Das heisst, der Mindestabstand des Fixkammes zu den Abreisswalzen ist um das Mass der Durchbiegung grösser zu wählen, um eine Kollision des Fixkammes während seiner Kämmstellung mit den Abreisswalzen zu vermeiden. Infolge der beschriebenen Durchbiegung des Fixkammes erhält man auch, über die Breite des abzuziehenden Faservlieses gesehen, unterschiedliche Kämmbedingungen, da die Durchbiegung in Richtung der äusseren Enden des Fixkammes abnimmt. Daraus resultiert, dass infolge der Durchbiegung der Abstand des Fixkammes zu den Abreisswalzen im Mittenbereich am geringsten ist, während er in Richtung der äusseren Enden zunimmt. Das kann zu unterschiedlichen Kämmergebnissen über die Länge des Fixkammes führen.In order to achieve an optimum combing result through the fixed comb, it is necessary that the distance between the Fixkammgarnitur, or the pin strip is kept as low as possible to the subsequent Abreisswalzen. If, as a result of the dynamic load transversely to the longitudinal direction of the top comb, a deflection occurs, this must be taken into account in the positioning of the top comb during installation. This means that the minimum distance of the fixed comb to the tear-off rollers is to be selected larger by the amount of deflection in order to avoid a collision of the fixed comb during its combing position with the tear-off rollers. As a result of the described deflection of the fixed comb, different combing conditions are obtained over the width of the nonwoven fabric to be stripped, since the deflection decreases in the direction of the outer ends of the fixed comb. from that results in that due to the deflection of the distance of the top comb to the tear-off rollers in the middle region is the lowest, while it increases in the direction of the outer ends. This can lead to different combing results over the length of the Fixkammes.

Es wäre nun denkbar, zur Reduzierung der Durchbiegung des Fixkammes seine äusseren Dimensionen zu vergrössern. Dies würde jedoch den Nachteil mit sich ziehen, dass das Gewicht des Fixkammes unter Umständen erheblich erhöht wird. Dies wiederum würde im Hinblick auf immer höhere Kammspielzahlen (KS/min) einen erhöhten Leistungsaufwand mit sich ziehen und auch die Lagerstellen des Zangenaggregates zusätzlich belasten.It would now be conceivable to increase its outer dimensions to reduce the deflection of the fixed comb. However, this would entail the disadvantage that the weight of the top comb may be considerably increased under certain circumstances. This, in turn, would entail an increased effort in terms of ever increasing numbers of combs (KS / min) and would additionally burden the bearing points of the nipper unit.

Die EP 0 580 549 A1 offenbart einen Fixkamm mit den Merkmalen des Oberbegriffs des Anspruchs 1.The EP 0 580 549 A1 discloses a fixed comb having the features of the preamble of claim 1.

Die Erfindung stellt sich die Aufgabe die genannten Nachteile zu vermeiden und eine kompakte Ausführung eines Fixkammes mit erhöhter Biegefestigkeit vorzuschlagen, wodurch auch die Relativbewegungen zwischen dem Halteabschnitt des Fixkammes und seinen Befestigungselementen minimiert werden. Gleichzeitig ist darauf zu achten, dass die Masse des Fixkammes nur geringfügig geändert wird und die engen geometrischen Einbaumasse des Fixkammes zwischen dem Zangenaggregat und den Abreisswalzen berücksichtigt werden.The invention has the object to avoid the disadvantages mentioned and to propose a compact design of a fixed comb with increased bending strength, whereby the relative movements between the holding portion of the Fixkammes and its fasteners are minimized. At the same time, care must be taken to ensure that the mass of the top comb is changed only slightly and that the narrow geometrical mounting mass of the top comb between the nipper unit and the puller rollers is taken into account.

Diese Aufgabe wird dadurch gelöst, dass das zusätzliche Versteifungselement mit dem Halteabschnitt und der Trägerplatte verbunden und mit diesen einstückig ausgebildet ist.This object is achieved in that the additional stiffening element is connected to the holding portion and the support plate and formed integrally therewith.

Der Begriff "Längsrichtung" bezieht sich auf die Länge des Fixkammes, welche sich in Einbaulage in der Kämmmaschine quer zur Durchflussrichtung des Fasermaterials erstreckt.The term "longitudinal direction" refers to the length of the fixed comb, which extends in the installation position in the combing machine transversely to the direction of flow of the fiber material.

Durch die vorgeschlagene Ausführung wird die Masse des Fixkammes unwesentlich erhöht. Das Versteifungselement kann in dem Bereich angebracht werden, in welchem es trotz den engen Einbauverhältnissen keine Behinderung darstellt. Vorzugsweise wird das Versteifungselement daher - in Einbaulage des Fixkammes gesehen - auf der Seite der Trägerplatte angebracht, welche den nachfolgenden Abreisswalzen gegenübersteht. Das entspricht - in Durchflussrichtung des Fasermaterials gesehen - der vorderen Seite der Trägerplatte.The proposed embodiment, the mass of the fixed comb is increased slightly. The stiffening element can be mounted in the area in which it is not a hindrance despite the tight installation conditions. Preferably, the stiffening element is therefore - seen in the installation position of the fixed comb - mounted on the side of the support plate, which faces the subsequent Abreisswalzen. This corresponds - seen in the flow direction of the fiber material - the front side of the support plate.

Vorzugsweise wird weiter vorgeschlagen, dass das Versteifungselement - in Längsrichtung des Fixkammträgers gesehen - sich von der Mitte des Fixkammträgers in Richtung seiner beiden Enden erstreckt und einen Abstand zu den Enden des Fixkammträgers aufweist. Dadurch ist es möglich, dass in dem jeweiligen freibleibenden Bereich zwischen den Enden des Versteifungselementes und dem jeweiligen Ende des Fixkammträgers Halteelemente für die Fixierung des Fixkammes, wie bisher bekannt, verwendet werden können.Preferably, it is further proposed that the stiffening element - viewed in the longitudinal direction of the Fixkammträgers - extending from the center of the Fixkammträgers in the direction of its two ends and has a distance from the ends of the Fixkammträgers. This makes it possible that in the respective remaining free area between the ends of the stiffening element and the respective end of the Fixkammträgers holding elements for fixing the Fixkammes, as previously known, can be used.

Erfindungsgemäß wird vorgeschagen, dass das Versteifungselement mit dem Halteabschnitt und der Trägerplatte verbunden ist. Das ergibt eine besonders stabile und kompakte Ausführung, wodurch auch zusätzlich eine deutliche Erhöhung der Biegesteifigkeit, quer zur Längsrichtung des Fixkammträgers erzielt wird. Vorzugsweise ist das Versteifungselement mit dem Halteabschnitt und der Trägerplatte zusammen als ein Hohlprofil auszubildet. Damit erhält man eine Ausführung des Fixkammträgers in Leichtbauweise bei gleichzeitiger Erhöhung der Biegefestigkeit. Wie bereits beschrieben, wird auch eine Erhöhung der Biegefestigkeit des Fixkammträgers quer zu seiner Längserstreckung erzielt, was sich ebenfalls vorteilhaft auf die Konstanthaltung der Position der Spitzen der Fixkammgarnitur während dem Abreiss- bzw. Kämmvorgang auswirkt. Zur Anpassung an die geometrischen Verhältnisse im Bereich der Abreisswalzen, wird vorgeschlagen, dass das Hohlprofil - im Querschnitt gesehen - eine in Richtung der Spitzen des Nadelstreifens abnehmenden Querschnittsfläche aufweist.According to the invention, it is proposed that the stiffening element is connected to the holding section and the carrier plate. This results in a particularly stable and compact design, which also in addition a significant increase in the bending stiffness, is achieved transversely to the longitudinal direction of the Fixkammträgers. Preferably, the stiffening element is formed together with the holding portion and the support plate as a hollow profile. This results in an execution of the Fixkammträgers in lightweight construction while increasing the flexural strength. As already described, an increase in the bending strength of the Fixkammträgers is achieved transversely to its longitudinal extent, which also has an advantageous effect on the constant maintenance of the position of the tips of the Fixkammgarnitur during the tearing or combing process. In order to adapt to the geometrical conditions in the area of the tear-off rollers, it is proposed that the hollow profile-seen in cross-section-has a cross-sectional area which decreases in the direction of the tips of the needle strip.

Um die Herstellkosten zu minimieren und die Krafteinleitung zu optimieren, wird erfindungsgemäß vorgeschlagen, dass der Fixkammträger, gebildet aus dem Halteabschnitt, der Trägerplatte und dem Versteifungselement aus einem Stück gefertigt ist.In order to minimize the production costs and to optimize the introduction of force, it is proposed according to the invention that the fixed comb carrier, formed from the holding section, the carrier plate and the stiffening element is manufactured in one piece.

Der Vorschlag den Fixkammträger aus Kunststoff herzustellen ergibt eine Gewichtsreduktion und ermöglicht die Erhöhung der Kammspielzahlen bei erhöhter Biegefestigkeit.The proposal to produce the Fixkammträger made of plastic results in a weight reduction and allows the increase in Kammspielzahlen with increased flexural strength.

Durch die entsprechende Ausbildung des Versteifungselementes als Hohlprofil bietet sich auch die Herstellung des Fixkammträgers aus einem Strangpressprofil an.Due to the corresponding design of the stiffening element as a hollow profile, the production of the Fixkammträgers from an extruded profile also offers.

Dabei kann das Strangpressprofil zur Gewichtsreduzierung aus einem nichtmetallischen Werkstoff bestehen, z. B. aus einer Aluminium-Legierung.The extruded profile may consist of a non-metallic material for weight reduction, z. B. of an aluminum alloy.

Weitere Vorteile der Erfindung werden in nachfolgenden Ausführungsbeispielen näher beschrieben und aufgezeigt.Further advantages of the invention are described in more detail in subsequent embodiments and shown.

Es zeigen:

Fig. 1
eine schematische Seitenansicht eines erfindungsgemäss ausgebildeten Fixkammträgers.
Fig. 2
eine schematische Vorderansicht X des Fixkammträgers nach Fig.1 in verkleinertem Massstab.
Fig.2a
eine Schnittdarstellung A-A nach Fig. 2
Fig. 3
eine schematische Darstellung einer Befestigungsstelle des Fixkammträgers in Seitenansicht Y nach Fig. 2
Show it:
Fig. 1
a schematic side view of an inventively designed Fixkammträgers.
Fig. 2
a schematic front view X of the Fixkammträgers after Fig.1 on a smaller scale.
2a
a sectional view AA after Fig. 2
Fig. 3
a schematic representation of an attachment point of the Fixkammträgers in side view Y after Fig. 2

Fig. 1 zeigt einen Querschnitt eines erfindungsgemäss ausgebildeten Fixkammträgers 2 eines Fixkammes 1 mit einer nicht dargestellten Kämmmaschine. Der Fixkammträger 2 wird gebildet aus einem Halteabschnitt 4, an welchem eine Trägerplatte 5 befestigt ist. Der Halteabschnitt 4 weißt die Querschnittsform eines offenen Profils mit einer bogenförmigen Aussenfläche auf. Fig. 1 shows a cross section of an inventively designed Fixkammträgers 2 a Fixkammes 1 with a combing machine, not shown. The Fixkammträger 2 is formed from a holding portion 4, to which a support plate 5 is attached. The holding section 4 has the cross-sectional shape of an open profile with an arcuate outer surface.

Dabei können der Halteabschnitt 4 und die Trägerplatte 5 aus einem Stück (z. B. aus Kunststoff oder einer stranggepressten Aluminium-Legierung) hergestellt sein. Um die Biegesteifigkeit des Fixkammträgers 2, insbesondere in seiner Längsrichtung L zu erhöhen, wird erfindungsgemäss im Verbindungsbereich 9 des Halteabschnittes 2 und der Trägerplatte 5 ein Versteifungselement 11 befestigt, das sich, wie aus Figur 2 zu entnehmen, fast über die gesamte Länge des Fixkammträgers 2 erstreckt. Es wäre auch denkbar mehrere im Abstand zueinander angeordnete Versteifungselemente anzubringen, die über die Länge des Fixkammträgers 2 angebracht sind. Den grössten Effekt in Bezug auf eine Erhöhung der Biegefestigkeit erhält man jedoch dann, wenn wie in Figur 2 gezeigt das Versteifungselement 11 durchgängig ausgebildet ist. Wie aus Figur 2 zu entnehmen, endet das Versteifungselement 11 jeweils in einem Abstand a zu den äusseren Rändern R1, R2 des Fixkammträgers 2. Dieser freie Raum im Bereich des Abstandes a wird für die Montage und Befestigung des Fixkammträgers 2 in Fixkammhaltern 17 benötigt, wie schematisch in Figur 3 dargestellt ist.In this case, the holding section 4 and the carrier plate 5 may be made of one piece (eg of plastic or of an extruded aluminum alloy). In order to increase the bending stiffness of the Fixkammträgers 2, in particular in its longitudinal direction L, according to the invention in the connecting region 9 of the holding portion 2 and the support plate 5, a stiffening element 11 is attached, which, as from FIG. 2 can be seen almost over the entire length of the Fixkammträgers 2 extends. It would also be conceivable to provide a plurality of mutually spaced stiffening elements, which are mounted over the length of the Fixkammträgers 2. However, the greatest effect in terms of increasing the flexural strength is obtained when, as in FIG. 2 shown the stiffening element 11 is formed continuously. How out FIG. 2 The free space in the region of the distance a is required for the assembly and attachment of the Fixkammträgers 2 in Fixkammhaltern 17, as shown schematically in Fig. 2, the stiffening element 11 terminates at a distance a to the outer edges R1, R2 of the Fixkammträgers FIG. 3 is shown.

Das Versteifungselement 11 ist an einem Ende mit dem Halteabschnitt 2 und am anderen Ende mit der Trägerplatte 5 verbunden. Zusammen mit dem Halteabschnitt 4 und der Trägerplatte 5 bildet das Versteifungselement 11 ein Hohlprofil mit einem dreieckförmigen Querschnitt.The stiffening element 11 is connected to the holding section 2 at one end and to the carrier plate 5 at the other end. Together with the holding portion 4 and the support plate 5, the stiffening element 11 forms a hollow profile with a triangular cross-section.

Durch den vorgeschlagenen nach unten auslaufenden dreieckförmigen Querschnitt wird gewährleistet, dass das Versteifungselement 11 nicht mit dem Druckzylinder eines nachfolgenden Abreisswalzenpaares kollidiert, welches in Einbaulage des Fixkammes 1 sich in unmittelbarer Nachbarschaft befindet. Die geometrische Zuordnung der Abreisswalzen zum Fixkamm ist z. B. aus der vorveröffentlichten EP-354 456 A2 zu entnehmen. In dieser Vorveröffentlichung wird auch schematisch gezeigt, wie die Fixkammhalter 17 auf einem Fixkammbett befestigt sind, welches an einer Unterzange eines Zangenaggregates angebracht ist.By the proposed downwardly expiring triangular cross-section ensures that the stiffening element 11 does not collide with the printing cylinder of a subsequent Abreisswalzenpaares, which is in the installed position of the Fixkammes 1 in the immediate vicinity. The geometric assignment of the Abreisswalzen for Fixkamm is z. B. from the pre-published EP-354 456 A2 refer to. In this Vorveröffentlichung is also shown schematically how the Fixkammhalter 17 are mounted on a fixed comb bed, which is attached to a lower nipper of a nipper unit.

Im unteren Bereich der Trägerplatte 5 ist eine Fixkammgarnitur 7 über eine Mehrzahl von Schrauben 14 und einer Klemmplatte 15 befestigt. Entsprechend der Anzahl der Schrauben 14 sind Gewindebohrungen 16 in der Trägerplatte 15 angebracht. Über die Schrauben 14 und der Klemmplatte 15 wird die Garnitur 7 auf der Trägerplatte 5 festgeklemmt.In the lower region of the support plate 5, a Fixkammgarnitur 7 is attached via a plurality of screws 14 and a clamping plate 15. According to the number of screws 14 threaded holes 16 are mounted in the support plate 15. About the screws 14 and the clamping plate 15, the clothing 7 is clamped on the support plate 5.

Die Garnitur 7 des Fixkammes 1 kann aus aneinander gereihten Nadelstreifen, aus aneinander gereihten gestanzten oder geprägten Blechen oder in anderer Form vorliegen. Dies ist jedoch für die Darstellung der Erfindung unerheblich.The clothing 7 of the fixed comb 1 can be made of strung pinstripes, of juxtaposed stamped or embossed sheets or in any other form. However, this is irrelevant to the presentation of the invention.

In der Schnittdarstellung A-A der Figur 2a wird schematisch gezeigt, wie die Durchbiegung b der Trägerplatte 5 des Fixkammträgers 2 durch die entstehende Kraft F in Durchflussrichtung D erfolgt. Wie allgemein bekannt, wird der mittels eines Rundkammes ausgekämmte Faserbart im Anschluss während des Abreissvorganges in Durchflussrichtung D über die Abreisswalzen durch die Garnitur 7 des Fixkammes 1 hindurch gezogen. Durch die dabei auftretende Kraft F kommt es insbesondere im Mittenbereich des Fixkammes 2 zu einer Durchbiegung b der Trägerplatte 5. Dabei handelt es sich um eine elastische Durchbiegung, welche nach Wegfall der Kraft F wieder zurück schwingt. D. h. bei einer Kammspielzahl von z. B. 500 KS/min erfolgt dieser Vorgang 500 mal pro Minute. Diese elastische Schwingung überträgt sich in Längsrichtung L des Fixkammträgers 2 bis in den Bereich a der Befestigungen des Fixkammes 1. Dadurch entstehen periodische Relativbewegungen in grosser Zahl zwischen dem Halteabschnitt 4 und dem jeweiligen Befestigungselement, über welches der Fixkamm 1 in der Kämmmaschine in seiner Position gehalten wird. In Figur 3 (Ansicht Y) ist eines der Befestigungselemente in Form einer Halteklammer 21 gezeigt, die um eine Achse 22 an einem Fixkammhalter 17 schwenkbar gelagert ist. Die Halteklammer 21 ist an ihrem freien Ende derart ausgebildet, so dass sie beim Übergreifen der bogenförmigen Aussenkontur des Halteabschnittes 4 eine Raststellung einnimmt. Die Funktion dieser Halteklammer ist ausserdem aus den Ausführungsbeispielen der DE-102 52 098 A1 zu entnehmen.In the sectional view AA of FIG. 2a schematically shows how the deflection b of the support plate 5 of the Fixkammträgers 2 by the resulting force F takes place in the flow direction D. As is generally known, the fiber tuft combed out by means of a circular comb is subsequently pulled in the flow direction D over the tear-off rollers through the clothing 7 of the fixing comb 1 during the tearing process. Due to the force F occurring in this case, deflection b of the carrier plate 5 occurs, in particular in the middle region of the fixed comb 2. This is an elastic deflection which oscillates back after the force F has been eliminated. Ie. at a Kammspielzahl of z. B. 500 KS / min, this process is 500 times per minute. This elastic oscillation is transmitted in the longitudinal direction L of the fixing comb support 2 into the region a of the fastenings of the fixing comb 1. This results in periodic relative movements in large numbers between the holding section 4 and the respective fastening element, via which the fixing comb 1 is held in its position in the combing machine becomes. In FIG. 3 (View Y) is one of the fasteners shown in the form of a retaining clip 21 which is pivotally mounted about an axis 22 to a fixed comb holder 17. The retaining clip 21 is formed at its free end so that it a latching position when reaching over the arcuate outer contour of the holding section 4 occupies. The function of this retaining clip is also from the embodiments of DE-102 52 098 A1 refer to.

Die gestrichelte Darstellung 21' in Figur 3 zeigt die Halteklammer 21 in ihrer entriegelten Stellung, wobei der Fixkammträger 2 nach oben aus einem Schlitz 19 einer vertikalen Aufnahme 18 des Fixkammhalters 17 herausgenommen werden kann. Für jeden Fixkamm sind zwei derartige Fixkammhalter 17 an einem nicht gezeigten Zangenaggregat befestigt. Wie bereits eingangs beschrieben, wird insbesondere der Halteabschnitt 4 im Bereich seiner Befestigungen 21 durch die beschriebenen Relativbewegungen verschliessen. Durch die erfindungsgemäss vorgeschlagene Anbringung eines Versteifungselementes wird die Durchbiegung b erheblich reduziert und somit auch die Gefahr eines Verschleisses im Bereich der Haltestellen herabgesetzt. Durch die Reduzierung der Durchbiegung auf ein Mindestmass wird auch gewährleistet, dass die geometrischen Kämmverhältnisse über die gesamte Länge des Fixkammes 1 im wesentlichen konstant bleiben.The dashed line 21 'in FIG. 3 shows the retaining clip 21 in its unlocked position, wherein the Fixkammträger 2 can be taken out of a slot 19 of a vertical receptacle 18 of the Fixkammhalters 17 upwards. For each ridge comb two such Fixkammhalter 17 are attached to a nipper unit, not shown. As already described above, in particular the holding section 4 in the region of its fastenings 21 will be closed by the described relative movements. By the invention proposed attachment of a stiffening element, the deflection b is considerably reduced and thus reduced the risk of wear in the area of stops. By reducing the deflection to a minimum, it is also ensured that the geometrical combing conditions remain substantially constant over the entire length of the fixing comb 1.

Vorzugsweise kann das Versteifungselement 12 aus einem nicht metallischen Werkstoff (z. B. Kunststoff) ausgebildet sein, damit die zu bewegende Masse des Fixkammes durch das Anbringen eines zusätzlichen Versteifungselementes nur unwesentlich erhöht wird.Preferably, the stiffening element 12 may be formed from a non-metallic material (eg plastic) so that the mass of the fixed comb to be moved is increased only insignificantly by the attachment of an additional stiffening element.

Im Rahmen der Erfindung in bezug auf die Anbringung eines zusätzlichen Versteifungselementes sind noch eine Vielzahl von Varianten möglich, welche hier nicht aufgezählt wurden.In the context of the invention with respect to the attachment of an additional stiffening element a variety of variants are still possible, which were not listed here.

Claims (9)

  1. A top comb (1) of a combing machine having a top comb carrier (2) which has a holding section (4) which is connected to a carrier plate (5) to which a needle strip or top comb clothing (7) is top, and at least one additional stiffening element (11, 12), which increases the bending stiffness of the top comb carrier (2) in its longitudinal direction (L), is provided on the carrier plate (5), characterized in that the stiffening element (11, 12) is connected to the holding section (4) and to the carrier plate (5) and is formed in one piece therewith.
  2. The top comb (1) as claimed in claim 1, characterized in that the stiffening element (11, 12) - viewed in the longitudinal direction of the top comb carrier (2) - extends from the middle of the top comb carrier towards its two ends (R1, R2), and is at a distance (a) from the ends of the top comb carrier.
  3. The top comb (1) as claimed in one of claims 1 to 2, characterized in that the stiffening element (11) with the holding section (4) and the carrier plate (5) together form a hollow profile.
  4. The top comb (1) as claimed in claim 3, characterized in that the hollow profile - viewed in cross-section - has a cross-sectional area which reduces in the direction of the points of the needle strip (7).
  5. The top comb (1) as claimed in one of claims 1 to 4, characterized in that the stiffening element (11, 12) is arranged on the front side (S1) of the carrier plate (5) referred to the direction of flow (D) of the fiber material through the top comb fitting (7).
  6. The top comb (1) as claimed in one of claims 1 to 4, characterized in that the top comb carrier (2) is made of plastic.
  7. The top comb (1) as claimed in one of claims 1 to 4, characterized in that the top comb carrier (2) comprises an extruded profile.
  8. The top comb (1) as claimed in claim 7, characterized in that the extruded profile is made of a non-metallic material.
  9. The top comb (1) as claimed in claim 7, characterized in that the extruded profile is made of an aluminum alloy.
EP20080018741 2008-01-29 2008-10-27 Fixing comb of a comb machine Active EP2085505B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1252008 2008-01-29

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EP2085505A3 EP2085505A3 (en) 2011-05-18
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Cited By (3)

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WO2014049411A1 (en) 2012-09-28 2014-04-03 Maschinenfabrik Rieter Ag Top comb attachment
DE102014105182A1 (en) 2014-04-11 2015-10-15 TRüTZSCHLER GMBH & CO. KG Fix comb for a combing machine
DE102014105175A1 (en) 2014-04-11 2015-10-29 TRüTZSCHLER GMBH & CO. KG Fix comb for a combing machine

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CN103436998B (en) * 2013-07-23 2016-05-18 经纬纺织机械股份有限公司 Combing machine top combing spring bearer plate device
JP5999129B2 (en) * 2014-03-24 2016-09-28 株式会社豊田自動織機 Comb top comb equipment
JP5999128B2 (en) 2014-03-24 2016-09-28 株式会社豊田自動織機 Comb top comb equipment
CN105442108B (en) * 2015-12-24 2020-06-02 江苏凯宫机械股份有限公司 Top comb plate for intelligent combing machine
CH718461A1 (en) * 2021-03-19 2022-09-30 Rieter Ag Maschf Holder for a top comb of a combing machine.

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US3651542A (en) * 1970-03-16 1972-03-28 Plastex Ltd Faller bars
EP0354456A3 (en) 1988-08-12 1991-01-09 Maschinenfabrik Rieter Ag Combing machine
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EP0580549B1 (en) * 1992-07-22 1995-08-16 Maschinenfabrik Rieter Ag Top comb unite for a combing machine
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CN2672093Y (en) * 2003-12-17 2005-01-19 南通金轮针布有限公司 Top comb for comber
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Publication number Priority date Publication date Assignee Title
WO2014049411A1 (en) 2012-09-28 2014-04-03 Maschinenfabrik Rieter Ag Top comb attachment
DE102014105182A1 (en) 2014-04-11 2015-10-15 TRüTZSCHLER GMBH & CO. KG Fix comb for a combing machine
DE102014105175A1 (en) 2014-04-11 2015-10-29 TRüTZSCHLER GMBH & CO. KG Fix comb for a combing machine

Also Published As

Publication number Publication date
CN101498066A (en) 2009-08-05
EP2085505A3 (en) 2011-05-18
CN101498066B (en) 2012-07-25
EP2085505A2 (en) 2009-08-05

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