EP3953506A1 - Carding bar for a carding machine - Google Patents

Carding bar for a carding machine

Info

Publication number
EP3953506A1
EP3953506A1 EP20704497.5A EP20704497A EP3953506A1 EP 3953506 A1 EP3953506 A1 EP 3953506A1 EP 20704497 A EP20704497 A EP 20704497A EP 3953506 A1 EP3953506 A1 EP 3953506A1
Authority
EP
European Patent Office
Prior art keywords
region
flat
angle
back part
vertical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20704497.5A
Other languages
German (de)
French (fr)
Other versions
EP3953506B1 (en
Inventor
Christoph Leinders
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Truetzschler Group SE
Original Assignee
Truetzschler GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Truetzschler GmbH and Co KG filed Critical Truetzschler GmbH and Co KG
Publication of EP3953506A1 publication Critical patent/EP3953506A1/en
Application granted granted Critical
Publication of EP3953506B1 publication Critical patent/EP3953506B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
    • D01G15/24—Flats or like members

Definitions

  • the invention relates to a flat rod with a support body, to the foot region of which a set can be fastened, a head region being arranged at a distance from the foot region by at least one back part, according to the preamble of claim 1.
  • the object of the invention is to develop a flat rod for a card which, with a drum width of more than 1,000 mm, has a sufficient moment of resistance, which dissipates the heat generated in the carding process and is as light as possible. This object is achieved with the features of claim 1.
  • the flat rod according to the invention can be used on a card or card, which preferably extends over the entire working width.
  • the flat rod comprises at least one functional side or functional surface that can come into direct or indirect contact with fiber material.
  • the flat rod has a support body, to the foot region of which a set can be fastened, a head region being arranged at a distance from the foot region by two back parts which together form a flea space.
  • each back part comprises at least one lower back part, a thickening and an upper back part, the lower back parts being arranged in the area of a flint cut on the support body and widening outward in the direction of the head area.
  • the thickening results in an accumulation of material which is further spaced apart from the center axis of the flat rod and which increases the moment of resistance in the tangential direction to the drum surface.
  • the shape of the back part which has a narrow waist at the base of the support body and then widens outwards, also results in a higher section modulus with good heat dissipation.
  • the corresponding cavity of the flat rod advantageously widens in the area of the lower back parts by the angle (a) to the vertical in the direction of the head area.
  • the widening of the cavity up to the thickening and the subsequent tapering of the back part towards the head area enables a high section modulus.
  • the cavity narrows in the area of the upper back parts by the angle (ß) to the vertical.
  • the result is an upper inclined contour of the back parts in the head area, as a result of which the flat bars can be guided around the pulleys on their flat travel without colliding with one another.
  • the thickening is arranged at most in the region of half the height of the back part.
  • the angle ( ⁇ ) is preferably smaller than the angle ( ⁇ ), so that the thickening in the cross section of the profile is arranged closer to the support body, which is more advantageous for the loading of the flat rod.
  • the inner walls of the cavity are preferably arranged parallel to one another in the area of the thickening. This means that a greater accumulation of material can be achieved without excessively enlarging the outer contour.
  • the angle (a) of the lower back part is preferably in the range from 20 ° to 45 ° to the vertical, particularly preferably in the range from 20 ° to 30 ° to the vertical.
  • the angle ( ⁇ ) of the upper back part is preferably in the range from 5 ° to 30 ° to the vertical, preferably in the range from 10 ° to 20 ° to the vertical.
  • the arrangement of the angles of the lower and upper back parts is a criterion for increasing the section modulus of the Flat rod in tangential direction to the drum circumference.
  • the position of the center of gravity of the flat bar is also determined by the size of the angle.
  • the cavity takes on the shape of two trapezoids, the bases of which are on top of each other.
  • the inner walls of the cavity preferably run parallel to the outer walls in the area of the lower and upper back parts.
  • a constant wall thickness can thus be produced which is at least 3 mm, preferably from 3.5 mm to 4.5 mm.
  • the increase in wall thickness also causes the flat rod to stiffen, which, in addition to the new shape, leads to an increase in the section modulus.
  • the outer dimension of the thickening corresponds at most to the width of the support body. This ensures that the flat bars do not block each other during the flat travel on the revolving flat.
  • Fig. 2 a cross section through a flat rod after
  • Fig. 3 a cross section through an inventive
  • FIG. 1 shows a card according to the prior art, in which fiber flocks are passed through a shaft to a feed roller 1, a feed table 2, over several lickerins 3a, 3b, 3c, to the drum 4 or the tambour.
  • the fibers of the fiber flocks are parallelized and cleaned by means of stationary rotating carding elements 20 arranged on a revolving cover 17.
  • the resulting fiber web is then conveyed via a doffer 5, a doffing roller 6 and several nip rollers 7, 8 to a nonwoven guiding element 9, which transforms the fibrous web with a funnel 10 into a sliver, which is sent to a subsequent processing machine or a Can 15 passes.
  • FIG. 2 shows a cross section through a flat rod 20 or carding element, in which, for the sake of simplicity, the clothing arranged on the foot region 23 of the flat rod 20 is not shown.
  • the flat rod 20 which can be extruded from aluminum, for example, consists of a head region 25 and a support body 22, both of which are separated by two Back parts 21, 21 a are connected to one another and thus form a flea space 24 which extends at least partially along the longitudinal axis of the flat rod 20.
  • a foot region 23 to which a clothing (not shown) for carding the fibers can be attached.
  • two openings 22a are arranged on both sides, in which pins, not shown, can be fastened directly or indirectly, with which the flat bar 20 is guided along a slide strip.
  • a further opening 22b is arranged in the center of the support body 22, into which a tension rod or a fastening element for the pins can engage, for example.
  • the openings 22a, 22b extend along the entire flat rod 20.
  • the support body 22 has an undercut 22c on both sides, into which fastening clips for fastening the clothing can engage.
  • the back parts 21 are inclined slightly trapezoidally to one another and narrow the cavity 24 towards the head region 25 first continuously, then in the area of the upper back parts 21 a with an increased inclination to one another.
  • the inclination or the angle of the upper back parts 21 a corresponds to the deflection radius of the revolving flat 17 at the deflection points when the flat rod 20 is guided away from the drum 4 of the card on its flat travel and is guided with its head region 25 around the pulleys.
  • the flat bar 20 according to the prior art shown here has a continuous wall thickness of 2 mm on the back part 21, which increases to 2.5 mm in the upper back part 21 a.
  • FIG. 3 shows a flat rod 20 according to the invention, in which, for reasons of simplification, the set arranged on the foot region 23 of the flat rod 20 is also not shown.
  • This flat rod 20 can also be extruded from aluminum, for example, and consists of a head region 25 and a support body 22, both of which are connected to one another by two back parts 21, 21 a, 21 b, 21 c and thus form a cavity 24 which extends at least partially along the longitudinal axis of the flat rod 20.
  • a foot region 23 to which a clothing (not shown) for carding the fibers can be attached.
  • two openings 22a are arranged on both sides, in which pins, not shown, can be fastened directly or indirectly, with which the flat rod 20 is guided along a slide strip.
  • a further opening 22b is arranged in the center of the support body 22, into which a tension rod or a fastening element for the pins can engage, for example.
  • the openings 22a, 22b extend along the entire flat rod 20.
  • the support body 22 has an undercut 22c on both sides, into which fastening clips for fastening the clothing can engage.
  • the flat rod 20 according to the invention with the foot region 23 and the support body 22 is identical to the prior art, as is shown, for example, in FIG.
  • the back parts 21 have, starting from the support body 22 to the head region 25, a lower back part 21 b, a thickening 21 c and an upper back part 21 a and form with the support region 22 and the head region 25 a closed cavity 24 which extends at least partially along the longitudinal axis of the flat rod 20 extends.
  • the lower back part 21 b runs obliquely outwards and widens the cavity 24.
  • the lower back part 21b has a tapering in the area of the undercut 22c, which widens towards the head area 25 at an angle a to the vertical.
  • the lower back part 21 b opens into a thickening 21 c, from which the upper back part 21 a narrows again by the angle ⁇ .
  • the inner walls of the cavity 24 can be arranged parallel to one another, while in the region of the upper and lower back parts 21 a, 21 b they run parallel to the outer walls.
  • the angle a is in the range from 20 ° to 45 ° to the vertical, preferably in the range from 20 ° to 30 ° to the vertical.
  • the angle ⁇ is in the range from 5 ° to 30 ° to the vertical, preferably in the range from 10 ° to 20 ° to the vertical.
  • the outer dimensions of the thickening 21 c to one another have a width that corresponds at most to the width of the flat rod 20 on the support body 22.
  • the flat rod of the invention creates a build-up of material that tends to vibrate less than 40 inches in length for a flat rod.
  • a length of the flat rod of, for example, 51 inches
  • the section modulus is reduced in the tangential direction to the drum surface.
  • the accumulation of material is achieved on the one hand by the thicker wall thickness s, on the other hand by the thickening 21 c, which is arranged between the lower and upper back part 21 b, 21 a.
  • the different angles, where the angle ⁇ > ⁇ also bring about a reduction in vibrations, since this causes the thickening 21c to be displaced in the direction of the support body 22, which means that is closer to the point of suspension of the flat bar 20 on the pins which are arranged in the openings 22a.
  • the result is a flat bar 20 with a high natural frequency which is more than 30% above the natural frequency of a flat bar 20 according to the prior art and thus has a lower tendency to oscillate when the length is increased from 40 to 51 inches.

Landscapes

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

Abstract

The present invention relates to a carding bar (20) having a supporting body (22), to the foot region (23) of which a clothing is fastenable, wherein a head region (25) is arranged in a manner spaced apart from the foot region (23) by at least one back part (21). The invention is characterized in that the back part (21) comprises at least a lower back part (21b), a thickened portion (21c) and an upper back part (21a), wherein the lower back part (21b) has a taper in the region of an undercut (22c), said taper widening in the direction of the head region (25).

Description

Titel: Deckelstab für eine Karde Title: Flat rod for a card
Beschreibung description
Die Erfindung betrifft einen Deckelstab mit einem Tragkörper, an dessen Fußbereich eine Garnitur befestigbar ist, wobei ein Kopfbereich beabstandet durch mindestens ein Rückenteil zum Fußbereich angeordnet ist, nach dem Oberbegriff von Anspruch 1. The invention relates to a flat rod with a support body, to the foot region of which a set can be fastened, a head region being arranged at a distance from the foot region by at least one back part, according to the preamble of claim 1.
An Karden aktueller Bauform werden für den Kardierprozess als Kardierelemente Deckel mit flexiblen Garnituren (Wanderdeckel) und/oder Festkardierelemente mit Ganzstahlgarnituren benutzt. Die eigentlichen Garnituren werden dabei durch hochpräzise Trägerbauteile aufgenommen. Üblicherweise verwendet man heute als Trägerbauteil Aluminiumstrangpressprofile mit mindestens einem Flohlraum. Diese haben bei Karden mit einer Trommelbreite von bis zu 1.000 mm ein ausreichendes Widerstandsmoment in tangentialer Richtung zur Trommel. Wird die Trommelbreite auf beispielsweise über 1.200 mm vergrößert, ist das vorhandene Widerstandsmoment nicht mehr ausreichend und der Deckelstab kann schwingen. Diese Schwingungen eines oder mehrerer Deckelstäbe können den Resonanzbereich des Systems erreichen, so dass einzelne Stäbe mit ihrer Garnitur die Garnitur der Trommel berühren. Infolge kann sich der gesamte Deckelkreislauf rückwärts drehen, was schwere Maschinenschäden zur Folge haben kann. Zusätzlich zum erforderlichen Widerstandsmoment muss der Deckelstab möglichst mit geringer Verformung die Wärme aus dem Kardierprozess abführen und möglichst leicht sein. Aufgabe der Erfindung ist die Weiterbildung eines Deckelstabes für eine Karde, der bei einer Trommelbreite von über 1.000 mm ein ausreichendes Widerstandsmoment aufweist, die im Kardierprozess entstehende Wärme gut abführt und möglichst leicht ist. Diese Aufgabe wird mit den Merkmalen von Anspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben. On cards of current design, covers with flexible card clothing (revolving cover) and / or fixed card elements with all-steel clothing are used as carding elements for the carding process. The actual sets are taken up by high-precision support components. Nowadays, extruded aluminum profiles with at least one flea space are usually used as the carrier component. For cards with a drum width of up to 1,000 mm, these have a sufficient section modulus in the tangential direction to the drum. If the drum width is increased to over 1,200 mm, for example, the existing moment of resistance is no longer sufficient and the flat rod can vibrate. These vibrations of one or more flat bars can reach the resonance range of the system, so that individual bars with their clothing touch the clothing of the drum. As a result, the entire lid circuit can rotate backwards, which can result in serious machine damage. In addition to the required section modulus, the flat rod must dissipate the heat from the carding process with as little deformation as possible and be as light as possible. The object of the invention is to develop a flat rod for a card which, with a drum width of more than 1,000 mm, has a sufficient moment of resistance, which dissipates the heat generated in the carding process and is as light as possible. This object is achieved with the features of claim 1. Advantageous further developments of the invention are given in the dependent claims.
Der erfindungsgemäße Deckelstab kann an einer Karde oder Krempel verwendet werden, der sich vorzugsweise über die gesamte Arbeitsbreite erstreckt. Der Deckelstab umfasst mindestens eine Funktionsseite oder Funktionsfläche, die direkt oder indirekt mit Fasermaterial in Kontakt kommen kann. The flat rod according to the invention can be used on a card or card, which preferably extends over the entire working width. The flat rod comprises at least one functional side or functional surface that can come into direct or indirect contact with fiber material.
Der Deckelstab weist einen Tragkörper auf, an dessen Fußbereich eine Garnitur befestigbar ist, wobei ein Kopfbereich beabstandet durch zwei Rückenteile zum Fußbereich angeordnet ist, die zusammen einen Flohlraum bilden. The flat rod has a support body, to the foot region of which a set can be fastened, a head region being arranged at a distance from the foot region by two back parts which together form a flea space.
Die Erfindung ist dadurch gekennzeichnet, dass jedes Rückenteil zumindest ein unteres Rückenteil, eine Verdickung und ein oberes Rückenteil umfasst, wobei die unteren Rückenteile im Bereich eines Flinterschnittes am Tragkörper angeordnet sind und sich in Richtung Kopfbereich nach außen aufweiten. Durch die Verdickung ergibt sich eine zur Mittenachse des Deckelstabes weiter beabstandete Materialanhäufung, die in tangentialer Richtung zur Trommeloberfläche das Widerstandsmoment erhöht. Ebenso ergibt sich durch die Form des Rückenteiles, das am Ansatz des Tragkörpers eine schmale Taille aufweist und sich dann nach außen aufweitet, ein höheres Widerstandsmoment bei guter Wärmeabführung. Der korrespondierende Hohlraum des Deckelstabes weitet sich vorteilhafterweise im Bereich der unteren Rückenteile um den Winkel (a) zur Senkrechten in Richtung Kopfbereich auf. Die Aufweitung des Hohlraumes bis zur Verdickung und die anschließende Verjüngung des Rückenteiles zum Kopfbereich ermöglicht ein hohes Widerstandsmoment. The invention is characterized in that each back part comprises at least one lower back part, a thickening and an upper back part, the lower back parts being arranged in the area of a flint cut on the support body and widening outward in the direction of the head area. The thickening results in an accumulation of material which is further spaced apart from the center axis of the flat rod and which increases the moment of resistance in the tangential direction to the drum surface. The shape of the back part, which has a narrow waist at the base of the support body and then widens outwards, also results in a higher section modulus with good heat dissipation. The corresponding cavity of the flat rod advantageously widens in the area of the lower back parts by the angle (a) to the vertical in the direction of the head area. The widening of the cavity up to the thickening and the subsequent tapering of the back part towards the head area enables a high section modulus.
Dabei verengt sich der Hohlraum im Bereich der oberen Rückenteile um den Winkel (ß) zur Senkrechten. Es ergibt sich eine obere schräge Kontur der Rückenteile im Kopfbereich, wodurch die Deckelstäbe auf ihrer Deckelreise um die Umlenkrollen geführt werden können, ohne miteinander zu kollidieren. The cavity narrows in the area of the upper back parts by the angle (ß) to the vertical. The result is an upper inclined contour of the back parts in the head area, as a result of which the flat bars can be guided around the pulleys on their flat travel without colliding with one another.
Dadurch, dass der Winkel (ß) kleiner/gleich dem Winkel (a) ist, wird die Verdickung maximal im Bereich der halben Höhe des Rückenteiles angeordnet. Vorzugsweise ist der Winkel (ß) kleiner als der Winkel (a), so dass die Verdickung im Querschnitt des Profils näher an dem Tragkörper angeordnet ist, was für die Belastung des Deckelstabes vorteilhafter ist. Because the angle (β) is smaller than / equal to the angle (α), the thickening is arranged at most in the region of half the height of the back part. The angle (β) is preferably smaller than the angle (α), so that the thickening in the cross section of the profile is arranged closer to the support body, which is more advantageous for the loading of the flat rod.
Vorzugsweise sind im Bereich der Verdickung die Innenwände des Hohlraumes parallel zueinander angeordnet. Damit kann eine stärkere Materialanhäufung realisiert werden, ohne die Außenkontur übermäßig zu vergrößern. The inner walls of the cavity are preferably arranged parallel to one another in the area of the thickening. This means that a greater accumulation of material can be achieved without excessively enlarging the outer contour.
Vorzugsweise liegt der Winkel (a) des unteren Rückenteiles im Bereich von 20° bis 45° zur Senkrechten, besonders bevorzugt im Bereich von 20° bis 30° zur Senkrechten. The angle (a) of the lower back part is preferably in the range from 20 ° to 45 ° to the vertical, particularly preferably in the range from 20 ° to 30 ° to the vertical.
Vorzugsweise liegt der Winkel (ß) des oberen Rückenteiles im Bereich von 5° bis 30° zur Senkrechten, vorzugsweise im Bereich von 10° bis 20° zur Senkrechten. Die Anordnung der Winkel der unteren und oberen Rückenteile ist ein Kriterium zur Erhöhung des Widerstandsmomentes des Deckelstabes in tangentialer Richtung zum Trommelumfang. Über die Größe der Winkel wird darüber hinaus auch die Lage des Schwerpunktes des Deckelstabes festgelegt. Mit der Anordnung der Winkel erhält der Hohlraum die Form von zwei Trapezen, deren Grundflächen aufeinander stehen. The angle (β) of the upper back part is preferably in the range from 5 ° to 30 ° to the vertical, preferably in the range from 10 ° to 20 ° to the vertical. The arrangement of the angles of the lower and upper back parts is a criterion for increasing the section modulus of the Flat rod in tangential direction to the drum circumference. The position of the center of gravity of the flat bar is also determined by the size of the angle. With the arrangement of the angles, the cavity takes on the shape of two trapezoids, the bases of which are on top of each other.
Vorzugsweise verlaufen die Innenwände des Hohlraumes im Bereich der unteren und oberen Rückenteile parallel zu den Außenwänden. Fertigungstechnisch lässt sich damit eine konstante Wanddicke hersteilen, die mindestens 3 mm aufweist, vorzugsweise von 3,5 mm bis 4,5 mm betragen kann. Die Erhöhung der Wanddicke bewirkt ebenfalls eine Versteifung des Deckelstabes, was neben der neuen Formgebung zu einer Erhöhung des Widerstandsmomentes führt. In einer vorteilhaften Ausführungsform entspricht die äußere Abmessung der Verdickung maximal der Breite des Tragkörpers. Damit ist sichergestellt, dass die Deckelstäbe sich bei der Deckelreise am Wanderdeckel nicht gegenseitig blockieren. The inner walls of the cavity preferably run parallel to the outer walls in the area of the lower and upper back parts. In terms of manufacturing technology, a constant wall thickness can thus be produced which is at least 3 mm, preferably from 3.5 mm to 4.5 mm. The increase in wall thickness also causes the flat rod to stiffen, which, in addition to the new shape, leads to an increase in the section modulus. In an advantageous embodiment, the outer dimension of the thickening corresponds at most to the width of the support body. This ensures that the flat bars do not block each other during the flat travel on the revolving flat.
Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der Figuren näher dargestellt. Es zeigen: Further measures improving the invention are shown in more detail below together with the description of a preferred exemplary embodiment of the invention with reference to the figures. Show it:
Fig. 1 : eine schematische Seitenansicht einer Karde mit der erfindungsgemäßen Vorrichtung; 1: a schematic side view of a card with the device according to the invention;
Fig. 2: einen Querschnitt durch einen Deckelstab nach dem Fig. 2: a cross section through a flat rod after
Stand der Technik; State of the art;
Fig. 3: einen Querschnitt durch einen erfindungsgemäßen Fig. 3: a cross section through an inventive
Deckelstab. Fig. 1 zeigt eine Karde nach dem Stand der Technik, bei der Faserflocken über einen Schacht zu einer Speisewalze 1 , einem Speisetisch 2, über mehrere Vorreißer 3a, 3b, 3c, zu der Trommel 4 oder dem Tambour geleitet werden. Auf der Trommel 4 werden die Fasern der Faserflocken mittels feststehender und an einem Wanderdeckel 17 angeordneter umlaufender Kardierelemente 20 parallelisiert und gereinigt. Der entstehende Faserflor wird nachfolgend über einen Abnehmer 5, eine Abnehmerwalze 6 und mehreren Quetschwalzen 7, 8, zu einem Vliesleitelement 9 gefördert, der den Faserflor mit einem Trichter 10 zu einem Faserband umformt, das über Abzugswalzen 11 , 12 an eine nachfolgende Verarbeitungsmaschine oder eine Kanne 15 übergibt. Flat rod. Fig. 1 shows a card according to the prior art, in which fiber flocks are passed through a shaft to a feed roller 1, a feed table 2, over several lickerins 3a, 3b, 3c, to the drum 4 or the tambour. On the drum 4, the fibers of the fiber flocks are parallelized and cleaned by means of stationary rotating carding elements 20 arranged on a revolving cover 17. The resulting fiber web is then conveyed via a doffer 5, a doffing roller 6 and several nip rollers 7, 8 to a nonwoven guiding element 9, which transforms the fibrous web with a funnel 10 into a sliver, which is sent to a subsequent processing machine or a Can 15 passes.
Figur 2 zeigt einen Querschnitt durch einen Deckelstab 20 oder Kardierelement, bei dem aus Gründen der Vereinfachung die am Fußbereich 23 des Deckelstabes 20 angeordnete Garnitur nicht dargestellt ist. Nach Figur 2 besteht der Deckelstab 20, der beispielsweise aus Aluminium stranggepresst sein kann, aus einem Kopfbereich 25 und einem Tragkörper 22, die beide durch zwei Rückenteile 21 , 21 a miteinander verbunden sind und damit einen Flohlraum 24 bilden, der sich zumindest teilweise entlang der Längsachse des Deckelstabes 20 erstreckt. Unterhalb des Tragkörpers 22 ist ein Fußbereich 23 angeordnet, an dem eine nicht dargestellte Garnitur zur Kardierung der Fasern befestigbar ist. Im Tragkörper 22 sind beidseitig zwei Öffnungen 22a angeordnet, in denen nicht dargestellte Stifte direkt oder indirekt befestigbar sind, mit denen der Deckelstab 20 auf einer Gleitleiste entlang geführt wird. Mittig im Tragkörper 22 ist eine weitere Öffnung 22b angeordnet, in die beispielsweise eine Spannstange oder ein Befestigungselement für die Stifte eingreifen kann. Die Öffnungen 22a, 22b erstrecken sich entlang des gesamten Deckelstabes 20. Im Übergang zwischen dem Tragkörper 22 und den Rückenteilen 21 weist der Tragkörper 22 beidseitig jeweils einen Hinterschnitt 22c auf, in die Befestigungsclipse zur Befestigung der Garnitur eingreifen können. FIG. 2 shows a cross section through a flat rod 20 or carding element, in which, for the sake of simplicity, the clothing arranged on the foot region 23 of the flat rod 20 is not shown. According to FIG. 2, the flat rod 20, which can be extruded from aluminum, for example, consists of a head region 25 and a support body 22, both of which are separated by two Back parts 21, 21 a are connected to one another and thus form a flea space 24 which extends at least partially along the longitudinal axis of the flat rod 20. Below the support body 22 is a foot region 23, to which a clothing (not shown) for carding the fibers can be attached. In the support body 22, two openings 22a are arranged on both sides, in which pins, not shown, can be fastened directly or indirectly, with which the flat bar 20 is guided along a slide strip. A further opening 22b is arranged in the center of the support body 22, into which a tension rod or a fastening element for the pins can engage, for example. The openings 22a, 22b extend along the entire flat rod 20. In the transition between the support body 22 and the back parts 21, the support body 22 has an undercut 22c on both sides, into which fastening clips for fastening the clothing can engage.
Die Rückenteile 21 sind leicht trapezförmig zueinander geneigt und verengen zum Kopfbereich 25 den Hohlraum 24 erst kontinuierlich, dann im Bereich der oberen Rückenteile 21 a mit einer verstärkten Neigung zueinander. Die Neigung bzw. der Winkel der oberen Rückenteile 21 a korrespondiert mit dem Umlenkradius des Wanderdeckels 17 an den Umlenkpunkten, wenn der Deckelstab 20 auf seiner Deckelreise von der Trommel 4 der Karde weggeführt wird und mit seinem Kopfbereich 25 um die Umlenkrollen geführt wird. Der hier dargestellte Deckelstab 20 nach dem Stand der Technik weist am Rückenteil 21 eine kontinuierliche Wandstärke von 2 mm auf, die im oberen Rückenteil 21 a auf 2,5 mm zunehmen. The back parts 21 are inclined slightly trapezoidally to one another and narrow the cavity 24 towards the head region 25 first continuously, then in the area of the upper back parts 21 a with an increased inclination to one another. The inclination or the angle of the upper back parts 21 a corresponds to the deflection radius of the revolving flat 17 at the deflection points when the flat rod 20 is guided away from the drum 4 of the card on its flat travel and is guided with its head region 25 around the pulleys. The flat bar 20 according to the prior art shown here has a continuous wall thickness of 2 mm on the back part 21, which increases to 2.5 mm in the upper back part 21 a.
In der Figur 3 ist ein erfindungsgemäßer Deckelstab 20 dargestellt, bei dem aus Gründen der Vereinfachung ebenfalls die am Fußbereich 23 des Deckelstabes 20 angeordnete Garnitur nicht dargestellt ist. Auch dieser Deckelstab 20 kann beispielsweise aus Aluminium stranggepresst sein, und besteht aus einem Kopfbereich 25 und einem Tragkörper 22, die beide durch zwei Rückenteile 21 , 21 a, 21 b, 21 c miteinander verbunden sind und damit einen Hohlraum 24 bilden, der sich zumindest teilweise entlang der Längsachse des Deckelstabes 20 erstreckt. Unterhalb des Tragkörpers 22 ist ein Fußbereich 23 angeordnet, an dem eine nicht dargestellte Garnitur zur Kardierung der Fasern befestigbar ist. Im Tragkörper 22 sind beidseitig zwei Öffnungen 22a angeordnet, in denen nicht dargestellte Stifte direkt oder indirekt befestigbar sind, mit denen der Deckelstab 20 auf einer Gleitleiste entlanggeführt wird. Mittig im Tragkörper 22 ist eine weitere Öffnung 22b angeordnet, in die beispielsweise eine Spannstange oder ein Befestigungselement für die Stifte eingreifen kann. Die Öffnungen 22a, 22b erstrecken sich entlang des gesamten Deckelstabes 20. Im Übergang zwischen dem Tragkörper 22 und den Rückenteilen 21 weist der Tragkörper 22 beidseitig jeweils einen Hinterschnitt 22c auf, in die Befestigungsclipse zur Befestigung der Garnitur eingreifen können. Insofern ist der erfindungsgemäße Deckelstab 20 mit dem Fußbereich 23 und dem Tragkörper 22 identisch zum Stand der Technik, wie er beispielsweise in Figur 2 abgebildet ist. Die Rückenteile 21 weisen ausgehend vom Tragkörper 22 zum Kopfbereich 25 ein unteres Rückenteil 21 b, eine Verdickung 21 c und ein oberes Rückenteil 21 a auf und bilden mit dem Tragbereich 22 und dem Kopfbereich 25 einen geschlossenen Hohlraum 24, der sich zumindest teilweise entlang der Längsachse des Deckelstabes 20 erstreckt. FIG. 3 shows a flat rod 20 according to the invention, in which, for reasons of simplification, the set arranged on the foot region 23 of the flat rod 20 is also not shown. This flat rod 20 can also be extruded from aluminum, for example, and consists of a head region 25 and a support body 22, both of which are connected to one another by two back parts 21, 21 a, 21 b, 21 c and thus form a cavity 24 which extends at least partially along the longitudinal axis of the flat rod 20. Below the support body 22 is a foot region 23, to which a clothing (not shown) for carding the fibers can be attached. In the support body 22, two openings 22a are arranged on both sides, in which pins, not shown, can be fastened directly or indirectly, with which the flat rod 20 is guided along a slide strip. A further opening 22b is arranged in the center of the support body 22, into which a tension rod or a fastening element for the pins can engage, for example. The openings 22a, 22b extend along the entire flat rod 20. In the transition between the support body 22 and the back parts 21, the support body 22 has an undercut 22c on both sides, into which fastening clips for fastening the clothing can engage. In this respect, the flat rod 20 according to the invention with the foot region 23 and the support body 22 is identical to the prior art, as is shown, for example, in FIG. The back parts 21 have, starting from the support body 22 to the head region 25, a lower back part 21 b, a thickening 21 c and an upper back part 21 a and form with the support region 22 and the head region 25 a closed cavity 24 which extends at least partially along the longitudinal axis of the flat rod 20 extends.
Das untere Rückenteil 21 b verläuft schräg nach außen und weitet den Hohlraum 24 auf. Dabei weist das untere Rückenteil 21 b im Bereich des Hinterschnittes 22c eine Verjüngung auf, die sich mit dem Winkel a zur Senkrechten in Richtung Kopfbereich 25 aufweitet. Das untere Rückenteil 21 b mündet in eine Verdickung 21 c, von der aus das obere Rückenteil 21 a sich wieder um den Winkel ß verengt. Im Bereich des oberen Rückenteiles 21 a verengt sich auch wieder der Hohlraum 24, bis das obere Rückenteil 21 a in den Kopfbereich 25 übergeht. Im Bereich der Verdickung 21 c können die Innenwände des Hohlraumes 24 parallel zueinander angeordnet sein, während sie im Bereich des oberen und unteren Rückenteils 21 a, 21 b parallel zu den Außenwänden verlaufen. Durch die parallele Anordnung der Innenwände im Bereich der Verdickung 21 c kann eine Materialanhäufung erreicht werden, mit der ebenfalls das Widerstandsmoment des Deckelstabes erhöht wird, ohne die Außenkontur weiter zu vergrößern. Der Winkel a liegt im Bereich von 20° bis 45° zur Senkrechten, vorzugsweise im Bereich von 20° bis 30° zur Senkrechten. The lower back part 21 b runs obliquely outwards and widens the cavity 24. The lower back part 21b has a tapering in the area of the undercut 22c, which widens towards the head area 25 at an angle a to the vertical. The lower back part 21 b opens into a thickening 21 c, from which the upper back part 21 a narrows again by the angle β. In the area of the upper Back part 21 a also narrows again the cavity 24 until the upper back part 21 a merges into the head region 25. In the region of the thickening 21 c, the inner walls of the cavity 24 can be arranged parallel to one another, while in the region of the upper and lower back parts 21 a, 21 b they run parallel to the outer walls. Due to the parallel arrangement of the inner walls in the area of the thickening 21c, an accumulation of material can be achieved with which the section modulus of the flat rod is also increased without further enlarging the outer contour. The angle a is in the range from 20 ° to 45 ° to the vertical, preferably in the range from 20 ° to 30 ° to the vertical.
Der Winkel ß liegt im Bereich von 5° bis 30° zur Senkrechten, vorzugsweise im Bereich von 10° bis 20° zur Senkrechten. Die äußeren Abmessungen der Verdickung 21 c zueinander weisen eine Breite auf, die maximal der Breite des Deckelstabes 20 am Tragkörper 22 entspricht. Die Wandstärke s beträgt zwischen den parallel angeordneten Innen- und Außenwänden des oberen und unteren Rückenteiles 21 a, 21 b mindestens 3 mm, vorzugsweise 3,5 bis 4,5 mm. In diesem Ausführungsbeispiel beträgt die Wandstärke s = 4 mm. The angle β is in the range from 5 ° to 30 ° to the vertical, preferably in the range from 10 ° to 20 ° to the vertical. The outer dimensions of the thickening 21 c to one another have a width that corresponds at most to the width of the flat rod 20 on the support body 22. The wall thickness s between the parallel inner and outer walls of the upper and lower back part 21 a, 21 b is at least 3 mm, preferably 3.5 to 4.5 mm. In this exemplary embodiment, the wall thickness is s = 4 mm.
Der erfindungsgemäße Deckelstab bewirkt eine Materialanhäufung, durch die ein Deckelstab mit einer Länge von über 40 Zoll zu geringeren Schwingungen neigt. Bei einer Länge des Deckelstabes von beispielsweise 51 Zoll reduziert sich das Widerstandsmoment in tangentialer Richtung zur Trommeloberfläche. Die Materialanhäufung wird einerseits durch die dickere Wandstärke s erreicht, andererseits durch die Verdickung 21 c, die zwischen dem unteren und oberen Rückenteil 21 b, 21 a angeordnet ist. Ebenso bewirken die unterschiedlichen Winkel, wobei der Winkel a > ß ist, eine Reduzierung von Schwingungen, da hiermit die Verdickung 21 c in Richtung Tragkörper 22 verschoben wird, was damit näher am Aufhängepunkt des Deckelstabes 20 an den Stiften liegt, die in den Öffnungen 22a angeordnet sind. The flat rod of the invention creates a build-up of material that tends to vibrate less than 40 inches in length for a flat rod. With a length of the flat rod of, for example, 51 inches, the section modulus is reduced in the tangential direction to the drum surface. The accumulation of material is achieved on the one hand by the thicker wall thickness s, on the other hand by the thickening 21 c, which is arranged between the lower and upper back part 21 b, 21 a. The different angles, where the angle α> β, also bring about a reduction in vibrations, since this causes the thickening 21c to be displaced in the direction of the support body 22, which means that is closer to the point of suspension of the flat bar 20 on the pins which are arranged in the openings 22a.
Es ergibt sich ein Deckelstab 20 mit einer hohen Eigenfrequenz, die mehr als 30 % über der Eigenfrequenz eines Deckelstabes 20 nach dem Stand der Technik liegt und damit bei einer vergrößerten Länge von 40 auf 51 Zoll eine geringere Neigung zum Schwingen aufweist. The result is a flat bar 20 with a high natural frequency which is more than 30% above the natural frequency of a flat bar 20 according to the prior art and thus has a lower tendency to oscillate when the length is increased from 40 to 51 inches.
Bezugszeichen Reference number
1 Speisewalze1 feed roller
2 Speisetisch2 dining table
3a, 3b, 3c Vorreißer 3a, 3b, 3c lickerin
4 Trommel 4 drum
5 Abnehmer 5 customers
6 Abnehmerwalze 6 scraper roller
7 Quetschwalze7 squeegee roller
8 Quetschwalze8 squeeze roller
9 Vliesleitelement9 Fleece guide element
10 Trichter 10 funnels
1 1 Abzugswalze 12 Abzugswalze 13 Kardierelement 15 Kanne 1 1 take-off roller 12 take-off roller 13 carding element 15 can
17 Wanderdeckel 17 revolving lid
20 Deckelstab 20 flat rod
21 Rückenteil 21 back section
21 a oberes Rückenteil 21 a upper back part
21 b unteres Rückenteil21 b lower back
21 c Verdickung 21c thickening
22 Tragkörper 22 support body
22a Öffnung 22a opening
22b Öffnung 22b opening
22c Hinterschnitt 22c undercut
23 Fußbereich23 foot area
24 Hohlraum 24 cavity
25 Kopfbereich s Wandstärke a Winkel 25 Head area s wall thickness a angle
ß Winkel ß angle

Claims

Patentansprüche Claims
1. Deckelstab (20) mit einem Tragkörper (22), an dessen Fußbereich (23) eine Garnitur befestigbar ist, wobei ein Kopfbereich (25) beabstandet durch zwei Rückenteile (21 ) zum Fußbereich (23) angeordnet ist, die zusammen einen Flohlraum (24) bilden, dadurch gekennzeichnet, dass jedes Rückenteil (21 ) zumindest ein unteres Rückenteil (21 b), eine Verdickung (21 c) und ein oberes Rückenteil (21 a) umfasst, wobei die unteren Rückenteile (21 b) im Bereich eines Flinterschnittes (22c) am Tragkörper (22) angeordnet sind und sich in1. Flat rod (20) with a support body (22), to the foot area (23) of which a set can be fastened, a head area (25) being arranged at a distance from the foot area (23) by two back parts (21), which together form a flea space ( 24), characterized in that each back part (21) comprises at least a lower back part (21 b), a thickening (21 c) and an upper back part (21 a), the lower back parts (21 b) in the area of a flint cut (22c) are arranged on the support body (22) and are in
Richtung Kopfbereich (25) nach außen aufweiten. Widen outwards towards the head area (25).
2. Deckelstab nach Anspruch 1 , dadurch gekennzeichnet, dass sich der Hohlraum (24) im Bereich der unteren Rückenteile (21 b) um den Winkel (a) zur Senkrechten in Richtung Kopfbereich (25) aufweitet. 2. Flat rod according to claim 1, characterized in that the cavity (24) in the region of the lower back parts (21 b) widens by the angle (a) to the vertical in the direction of the head region (25).
3. Deckelstab nach Anspruch 1 , dadurch gekennzeichnet, dass die unteren Rückenteile (21 b) in eine Verdickung (21 c) münden, von der aus sich die oberen Rückenteile (21 a) in Richtung Kopfbereich (25) erstrecken. 3. Flat bar according to claim 1, characterized in that the lower back parts (21 b) open into a thickening (21 c) from which the upper back parts (21 a) extend in the direction of the head region (25).
4. Deckelstab nach Anspruch 1 , dadurch gekennzeichnet, dass sich der Hohlraum (24) im Bereich der oberen Rückenteile (21 a) um den Winkel (ß) zur Senkrechten verengt. 4. Flat bar according to claim 1, characterized in that the cavity (24) narrows in the region of the upper back parts (21 a) by the angle (ß) to the vertical.
5. Deckelstab nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Winkel (ß) kleiner/gleich dem Winkel (a) ist. 5. flat bar according to one of the preceding claims, characterized in that the angle (ß) is smaller than / equal to the angle (a).
6. Deckelstab nach Anspruch 1 , dadurch gekennzeichnet, dass im Bereich der Verdickung die Innenwände des Hohlraumes (24) parallel zueinander angeordnet sind. 6. Flat bar according to claim 1, characterized in that the inner walls of the cavity (24) are arranged parallel to one another in the region of the thickening.
7. Deckelstab nach Anspruch 2, dadurch gekennzeichnet, dass der7. flat bar according to claim 2, characterized in that the
Winkel (a) im Bereich von 20° bis 45° zur Senkrechten liegt, vorzugsweise im Bereich von 20° bis 30° zur Senkrechten. Angle (a) is in the range from 20 ° to 45 ° to the vertical, preferably in the range from 20 ° to 30 ° to the vertical.
8. Deckelstab nach Anspruch 4, dadurch gekennzeichnet, dass der Winkel (ß) im Bereich von 5° bis 30° zur Senkrechten liegt, vorzugsweise im Bereich von 10° bis 20° zur Senkrechten. 8. flat bar according to claim 4, characterized in that the angle (ß) is in the range of 5 ° to 30 ° to the vertical, preferably in the range of 10 ° to 20 ° to the vertical.
9. Deckelstab nach Anspruch 1 , dadurch gekennzeichnet, dass die Innenwände des Hohlraumes (24) im Bereich der unteren und oberen Rückenteile (21 b, 21 a) parallel zu den Außenwänden verlaufen. 9. flat bar according to claim 1, characterized in that the inner walls of the cavity (24) in the region of the lower and upper back parts (21 b, 21 a) run parallel to the outer walls.
10. Deckelstab nach Anspruch 9, dadurch gekennzeichnet, dass die unteren und oberen Rückenteile (21 b, 21 a) eine Wandstärke (s) von mindestens 3 mm aufweisen, vorzugsweise von 3,5 mm bis 4,5 mm. 10. flat bar according to claim 9, characterized in that the lower and upper back parts (21 b, 21 a) have a wall thickness (s) of at least 3 mm, preferably from 3.5 mm to 4.5 mm.
11. Deckelstab nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die äußere Abmessung der Verdickung (21 c) maximal der Breite des Tragkörpers (22) entspricht. 11. Flat rod according to one of the preceding claims, characterized in that the outer dimension of the thickening (21 c) corresponds at most to the width of the support body (22).
EP20704497.5A 2019-04-09 2020-02-06 Carding bar for a carding machine Active EP3953506B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019109233.7A DE102019109233A1 (en) 2019-04-09 2019-04-09 Flat rod for a card
PCT/EP2020/052955 WO2020207637A1 (en) 2019-04-09 2020-02-06 Carding bar for a carding machine

Publications (2)

Publication Number Publication Date
EP3953506A1 true EP3953506A1 (en) 2022-02-16
EP3953506B1 EP3953506B1 (en) 2023-08-23

Family

ID=69528828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20704497.5A Active EP3953506B1 (en) 2019-04-09 2020-02-06 Carding bar for a carding machine

Country Status (4)

Country Link
EP (1) EP3953506B1 (en)
CN (1) CN113454274B (en)
DE (1) DE102019109233A1 (en)
WO (1) WO2020207637A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59405557D1 (en) * 1993-06-03 1998-05-07 Rieter Ag Maschf Card with revolving flats
JPH09316734A (en) * 1996-05-29 1997-12-09 Howa Mach Ltd Flat bar for card
DE59804953D1 (en) * 1997-02-24 2002-09-05 Rieter Ag Maschf high-performance card
CN203834076U (en) * 2011-06-08 2014-09-17 拉卡什米机械厂有限公司 Cover plate end connection piece of spinning and carding machine

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Publication number Publication date
BR112021016204A8 (en) 2022-07-05
CN113454274A (en) 2021-09-28
CN113454274B (en) 2023-08-01
EP3953506B1 (en) 2023-08-23
DE102019109233A1 (en) 2020-10-15
WO2020207637A1 (en) 2020-10-15
BR112021016204A2 (en) 2021-10-26

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