EP2047016B1 - Needle strip for chain drawing frames - Google Patents

Needle strip for chain drawing frames Download PDF

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Publication number
EP2047016B1
EP2047016B1 EP07764681A EP07764681A EP2047016B1 EP 2047016 B1 EP2047016 B1 EP 2047016B1 EP 07764681 A EP07764681 A EP 07764681A EP 07764681 A EP07764681 A EP 07764681A EP 2047016 B1 EP2047016 B1 EP 2047016B1
Authority
EP
European Patent Office
Prior art keywords
chain
bar
needle
longitudinal axis
casing
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.)
Expired - Fee Related
Application number
EP07764681A
Other languages
German (de)
French (fr)
Other versions
EP2047016A1 (en
Inventor
Till M. Schmauser
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.)
Drei-S-Werk Praezisionswerkzeuge & Co Fertig GmbH
Original Assignee
Drei-S-Werk Prazisionswerkzeuge & Co GmbH
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
Priority claimed from DE200620011676 external-priority patent/DE202006011676U1/en
Priority claimed from US11/494,375 external-priority patent/US20080022493A1/en
Application filed by Drei-S-Werk Prazisionswerkzeuge & Co GmbH filed Critical Drei-S-Werk Prazisionswerkzeuge & Co GmbH
Publication of EP2047016A1 publication Critical patent/EP2047016A1/en
Application granted granted Critical
Publication of EP2047016B1 publication Critical patent/EP2047016B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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 needle bar for a chain line, in particular a textile machine. It further relates to a chain link with a number of such needle bars.
  • a chain line with a large number of such needle bars is used in machines for combing, post-combing and in spin preparation.
  • Such a needle bar which is often referred to as a disposable needle bar, is known, for example, from US Pat US 2005/0278899 A1 known.
  • a series of needles is surrounded by a sheath which holds them and at the same time encloses a support bar with at least partially a wall thickness of only 1 mm.
  • the diameter of the support bar can be between 6 mm and 8 mm. With a carrier rod with a diameter of 8 mm, the resulting needle bar thus achieves a total diameter of at least 10 mm, so that such a needle bar is no longer suitable for use in standardized chains with a chain pitch of 9.525 mm.
  • the invention has for its object to provide a particularly suitable needle bar for a chain link, in particular with a chain pitch of 9.525 mm.
  • a needle bar for this purpose, the needle bar on a support rod with a rod diameter of 5.9 mm to 6.1 mm, while the wall thickness of the jacket in the thinnest wall region is between 1.4 mm and 1.8 mm.
  • the needle bar has a distance between the longitudinal axis of the needles and the longitudinal axis of the carrier rod of more than 2.15 mm, in particular 2.75 mm.
  • a rod diameter of 6.0 mm is particularly preferred.
  • the wall thickness of the casing at least in the thin-walled region preferably 1.6 mm.
  • the chain pitch here is the distance of the central longitudinal axes of adjacent needle bars understood, which are used in a chain of a chain line of a textile machine.
  • a trained in the specified ranges of the rod diameter and the sheath thickness needle bar has a comparatively low total weight and thus is particularly easy.
  • a suitably trained needle bar is so flexible that the forces acting on the needles during normal use are damped. In the area of the greatest deflection, the needle bar can be supported against the needle bar adjacent to the chain track, whereby the forces occurring are gently passed on to the chain and to the advancing drive.
  • Fig. 1 shows a needle bar 1 for a chain line 8 ( Fig. 4 ) in two different views.
  • the needle bar has a support rod 2, which is formed at one end to a crank 2a and at the end facing away from the crank 2a is provided with a bearing bore 2b.
  • the support rod 2 is enclosed by a casing 4, which is formed on one side as a rib 4b.
  • the sheath 4 consists of a plastic material that is applied in the injection process by inserting the needles 3 on the support rod 2.
  • two guide grooves 7 are formed in pairs.
  • Fig. 2 shows the sectional view of a needle bar.
  • the support rod 2 which is characterized by its diameter d.
  • Relative to the Collinsstablijnsachse 6 is opposite the rib 4b designed as the part of the sheath 4 of the thinnest wall portion 4a of the casing 4.
  • This thin-walled portion 4a of the casing 4 extends at least over half the rod circumference of the needle bar 1, ie at least on the below in the illustration the longitudinal axis 6 extending center line M of the support rod 2 lying, semi-circular arc portion of the needle bar first
  • the distance a referred to below as the needle offset between the longitudinal axis of each needle 5 and the Stromstablijnsachse 6 results as a difference of the radius' D / 2 of the needle bar 1 and the half thickness m / 2 of the rib 4b.
  • Fig. 3 shows the arrangement of two needle bars 1 in a chain line 8 with a (not shown) chain.
  • the distance designated as t between the Collinsstablticiansachsen 6 corresponds to the so-called chain pitch of the chain used in the chain line 10.
  • Fig. 4 shows the arrangement of a number of needle bars 1 in a chain line 8 with two chains 9 of a textile machine.
  • A indicates the feed direction of the chain path 8.
  • the needles 3 of the needle bars 1 used in the chain section 8 are up to the outlet v before the take-off roll 10 in engagement with the material to be processed. Due to the enlargement of the needle offset a from 2.15 mm to 2.9 mm, the outlet width v in front of the take-off roll 10 is reduced by 0.75 mm. It is thereby achieved that the needles 3 of the needle bars 1 are temporally and / or spatially comparatively long in engagement with the material to be processed, which in turn leads to an improvement in the quality of the material to be fibrillated.

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

Abstract

The invention relates to a needle strip (1) with a support rod (2) and a sheath (4) surrounding the support rod containing a number of aligned needles (3), with the support rod (2) having a diameter (d) of 5.9 mm to 6.1 mm, and the sheath (4) having a thin walled area (4a) with a wall thickness (b) of 1.4 mm to 1.8 mm.

Description

Die Erfindung betrifft einen Nadelstab für eine Kettenstrecke, insbesondere einer Textilmaschine. Sie betrifft weiter eine Kettenstrecke mit einer Anzahl solcher Nadelstäbe. Eine Kettenstrecke mit einer Vielzahl solcher Nadelstäbe ist in Maschinen für die Kämmerei, Nachkämmerei und in der Spinnvorbereitung im Einsatz.The invention relates to a needle bar for a chain line, in particular a textile machine. It further relates to a chain link with a number of such needle bars. A chain line with a large number of such needle bars is used in machines for combing, post-combing and in spin preparation.

Ein derartiger, häufig auch als Einwegnadelstab bezeichneter Nadelstab ist beispielsweise aus der US 2005/0278899 A1 bekannt. Bei dem bekannten Nadelstab ist eine Reihe von Nadeln von einer diese haltenden Ummantelung umgeben, die gleichzeitig einen Trägerstab mit zumindest teilweise einer Wandstärke von lediglich 1 mm umschließt. Der Durchmesser des Trägerstabes kann zwischen 6 mm und 8 mm betragen. Bei einem Trägerstab mit einem Durchmesser von 8 mm erreicht der resultierende Nadelstab somit einen Gesamtdurchmesser von mindestens 10 mm, so dass ein solcher Nadelstab nicht mehr für den Einsatz in genormten Ketten mit einer Kettenteilung 9,525 mm geeignet ist.Such a needle bar, which is often referred to as a disposable needle bar, is known, for example, from US Pat US 2005/0278899 A1 known. In the known needle bar, a series of needles is surrounded by a sheath which holds them and at the same time encloses a support bar with at least partially a wall thickness of only 1 mm. The diameter of the support bar can be between 6 mm and 8 mm. With a carrier rod with a diameter of 8 mm, the resulting needle bar thus achieves a total diameter of at least 10 mm, so that such a needle bar is no longer suitable for use in standardized chains with a chain pitch of 9.525 mm.

Der Erfindung liegt die Aufgabe zugrunde, einen besonders geeigneten Nadelstab für eine Kettenstrecke, insbesondere mit einer Kettenteilung von 9,525 mm, anzugeben.The invention has for its object to provide a particularly suitable needle bar for a chain link, in particular with a chain pitch of 9.525 mm.

Diese Aufgabe wird erfindungsgemäß durch einen Nadelstab gemäß dem Anspruch 1 gelöst. Dazu weist der Nadelstab einen Trägerstab mit einem Stabdurchmesser von 5,9 mm bis 6,1 mm auf, während die Wanddicke der Ummantelung im dünnwandigsten Bereich zwischen 1,4 mm und 1,8 mm beträgt. Der Nadelstab weist einen Abstand zwischen der Längsachse der Nadeln und der Längsachse des Trägerstabes von mehr als 2,15 mm, insbesondere 2,75 mm, auf. Der dadurch vergrößerte Nadelversatz, d. h. die Annäherung der Längsachse der Nadeln des Nadelstabes an eine Abzugswalze der Kettenstrecke im Bereich des Austritts des zu bearbeitenden Fasermaterials, bewirkt eine Qualitätsverbesserung des Faserbandes.This object is achieved by a needle bar according to claim 1. For this purpose, the needle bar on a support rod with a rod diameter of 5.9 mm to 6.1 mm, while the wall thickness of the jacket in the thinnest wall region is between 1.4 mm and 1.8 mm. The needle bar has a distance between the longitudinal axis of the needles and the longitudinal axis of the carrier rod of more than 2.15 mm, in particular 2.75 mm. The thus increased needle offset, ie the approach of the longitudinal axis of the needles of the needle bar to a take-off roll of the chain line in the region of the exit of the fiber material to be processed, causes a quality improvement of the sliver.

Besonders bevorzugt ist ein Stabdurchmesser von 6,0 mm. Zur zumindest geringfügigen Unterschreitung der Kettenteilung einer eine Anzahl derartiger Nadelstäbe aufnehmenden Kettenstrecke beträgt bei diesem bevorzugten Stabdurchmesser die Wanddicke der Ummantelung zumindest im dünnwandigen Bereich vorzugsweise 1,6 mm. Unter der Kettenteilung wird hierbei der Abstand der Mittellängsachsen von zueinander benachbarten Nadelstäben verstanden, die in eine Kette einer Kettenstrecke einer Textilmaschine eingesetzt sind.Particularly preferred is a rod diameter of 6.0 mm. For at least slightly below the chain pitch of a number of such needle bars receiving chain line is in this preferred bar diameter, the wall thickness of the casing at least in the thin-walled region preferably 1.6 mm. Under the chain pitch here is the distance of the central longitudinal axes of adjacent needle bars understood, which are used in a chain of a chain line of a textile machine.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass ein in den angegebenen Bereichen des Stabdurchmessers und der Ummantelungsdicke ausgebildeter Nadelstab ein vergleichsweise geringes Gesamtgewicht aufweist und somit besonders leicht ist. Zudem ist ein entsprechend ausgebildeter Nadelstab derart flexibel, dass die bei dem bestimmungsgemäßen Gebrauch auf die Nadeln wirkenden Kräfte gedämpft werden. Im Bereich der größten Durchbiegung kann sich der Nadelstab gegen den in der Kettenstrecke benachbarten Nadelstab abstützen, wodurch die auftretenden Kräfte schonend an die Kette und an den diese vorschiebenden Antrieb weitergeleitet werden.The advantages achieved by the invention are, in particular, that a trained in the specified ranges of the rod diameter and the sheath thickness needle bar has a comparatively low total weight and thus is particularly easy. In addition, a suitably trained needle bar is so flexible that the forces acting on the needles during normal use are damped. In the area of the greatest deflection, the needle bar can be supported against the needle bar adjacent to the chain track, whereby the forces occurring are gently passed on to the chain and to the advancing drive.

Nachfolgend werden Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Darin zeigen:

Fig. 1
in einer Seitenansicht und in einer Draufsicht einen Nadelstab für eine Kettenstrecke,
Fig. 2
den Nadelstab in einem Querschnitt entlang der Linie II - II in Fig. 1,
Fig. 3
zwei Nadelstäbe in einer Darstellung gemäß Fig. 2 in deren Anordnung in einer Kette, und
Fig. 4
in einer Schnittdarstellung das Ende einer Kettenstrecke mit einer Anzahl der in Ketten angeordneten Nadelstäbe sowie eine Walzenanordnung für den Transport eines Faserbandes.
Embodiments of the invention will be explained in more detail with reference to a drawing. Show:
Fig. 1
in a side view and in a plan view, a needle bar for a chain line,
Fig. 2
the needle bar in a cross section along the line II - II in Fig. 1 .
Fig. 3
two needle bars in a representation according to Fig. 2 in their arrangement in a chain, and
Fig. 4
in a sectional view of the end of a chain line with a number of arranged in chains needle bars and a roller assembly for the transport of a sliver.

Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.

Fig. 1 zeigt einen Nadelstab 1 für eine Kettenstrecke 8 (Fig. 4) in zwei verschiedenen Ansichten. Der Nadelstab weist einen Trägerstab 2 auf, der an einem Ende zu einer Kurbel 2a ausgebildet und an dem der Kurbel 2a abgewandten Ende mit einer Lagerbohrung 2b versehen ist. Der Trägerstab 2 ist von einer Ummantelung 4 umschlossen, die auf einer Seite als Rippe 4b ausgebildet ist. In dieser sind eine Vielzahl von Nadeln 3 in einer Reihe entlang der Trägerstablängsachse 6 gehalten. Die Ummantelung 4 besteht aus einem Kunststoffmaterial, dass im Spritzverfahren unter Einlegen der Nadeln 3 auf den Trägerstab 2 aufgebracht wird. Auf dem zwischen der Kurbel 2a und der Rippe 4b gelegenen Abschnitt des Trägerstabes 2 sind jeweils paarweise zwei Führungsnuten 7 ausgebildet. Fig. 1 shows a needle bar 1 for a chain line 8 ( Fig. 4 ) in two different views. The needle bar has a support rod 2, which is formed at one end to a crank 2a and at the end facing away from the crank 2a is provided with a bearing bore 2b. The support rod 2 is enclosed by a casing 4, which is formed on one side as a rib 4b. In this a plurality of needles 3 are held in a row along the Trägerstablängsachse 6. The sheath 4 consists of a plastic material that is applied in the injection process by inserting the needles 3 on the support rod 2. On the section of the support bar 2 located between the crank 2a and the rib 4b, two guide grooves 7 are formed in pairs.

Fig. 2 zeigt die geschnittene Ansicht eines Nadelstabes. Im Inneren des Schnittes liegt der Trägerstab 2, der durch seinen Durchmesser d gekennzeichnet ist. Bezogen auf die Trägerstablängsachse 6 liegt gegenüber des als Rippe 4b ausgebildeten Teils der Ummantelung 4 der dünnwandigste Bereich 4a der Ummantelung 4. Dieser dünnwandige Bereich 4a der Ummantelung 4 erstreckt sich zumindest über den halben Stabumfang des Nadelstabes 1, d. h. zumindest über den in der Darstellung unterhalb der durch die Längsachse 6 verlaufenden Mittellinie M des Trägerstabs 2 liegenden, halbkreisförmigen Bogenbereich des Nadelstabes 1. Fig. 2 shows the sectional view of a needle bar. Inside the cut is the support rod 2, which is characterized by its diameter d. Relative to the Trägerstablängsachse 6 is opposite the rib 4b designed as the part of the sheath 4 of the thinnest wall portion 4a of the casing 4. This thin-walled portion 4a of the casing 4 extends at least over half the rod circumference of the needle bar 1, ie at least on the below in the illustration the longitudinal axis 6 extending center line M of the support rod 2 lying, semi-circular arc portion of the needle bar first

Der nachfolgend als Nadelversatz bezeichnet Abstand a zwischen der Längsachse jeder Nadel 5 und der Trägerstablängsachse 6 ergibt sich als Differenz des Radius' D/2 des Nadelstabes 1 und der halben Dicke m/2 der Rippe 4b. Bei einer Rippendicke m = 3,7 mm ergibt sich in der bevorzugten Ausführung mit einem Trägerstabdurchmesser d = 6,0 mm und einer Wanddicke der Ummantelung von 1,6 mm im dünnwandigsten Bereich 4a ein Nadelversatz von a = 2,75 mm.The distance a referred to below as the needle offset between the longitudinal axis of each needle 5 and the Trägerstablängsachse 6 results as a difference of the radius' D / 2 of the needle bar 1 and the half thickness m / 2 of the rib 4b. With a rib thickness m = 3.7 mm results in the preferred embodiment with a support rod diameter d = 6.0 mm and a wall thickness of the jacket of 1.6 mm in the thinnest region 4a, a needle offset of a = 2.75 mm.

Fig. 3 zeigt die Anordnung zweier Nadelstäbe 1 in einer Kettenstrecke 8 mit einer (nicht dargestellten) Kette. Der als t bezeichnete Abstand zwischen den Trägerstablängsachsen 6 entspricht der sogenannten Kettenteilung der in der Kettenstrecke 10 verwendeten Kette. Die Kettenteilung der bevorzugt eingesetzten Kette beträgt t = 9,525 mm. Fig. 3 shows the arrangement of two needle bars 1 in a chain line 8 with a (not shown) chain. The distance designated as t between the Trägerstablängsachsen 6 corresponds to the so-called chain pitch of the chain used in the chain line 10. The chain pitch of the preferred chain is t = 9.525 mm.

Fig. 4 zeigt die Anordnung einer Anzahl von Nadelstäben 1 in einer Kettenstrecke 8 mit zwei Ketten 9 einer Textilmaschine. Dabei gibt A die Vorschubrichtung der Kettenstrecke8 an. Am Ende der Kettenstrecke 8 befinden sich eine Abzugswalze 10 sowie zwei weitere Walzen 11, 12 für den Vorschub des in nicht näher dargestellter Art und Weise in der Textilmaschine bearbeiteten Materials. Fig. 4 shows the arrangement of a number of needle bars 1 in a chain line 8 with two chains 9 of a textile machine. In this case, A indicates the feed direction of the chain path 8. At the end of the chain section 8 there are a take-off roller 10 and two further rollers 11, 12 for the feed of the processed in a manner not shown in the textile machine material.

Die Nadeln 3 der in der Kettenstrecke 8 verwendeten Nadelstäbe 1 befinden sich bis zur Auslaufweite v vor der Abzugswalze 10 im Eingriff in das zu bearbeitende Material. Durch die Vergrößerung des Nadelversatzes a von 2,15 mm auf 2,9 mm verringert sich die Auslaufweite v vor der Abzugswalze 10 um 0,75 mm. Dadurch wird erreicht, dass die Nadeln 3 der Nadelstäbe 1 zeitlich und/oder räumlich vergleichsweise lang mit dem zu bearbeiteten Material im Eingriff sind, was wiederum zu einer Qualitätsverbesserung des zu fasernden Materials führt.The needles 3 of the needle bars 1 used in the chain section 8 are up to the outlet v before the take-off roll 10 in engagement with the material to be processed. Due to the enlargement of the needle offset a from 2.15 mm to 2.9 mm, the outlet width v in front of the take-off roll 10 is reduced by 0.75 mm. It is thereby achieved that the needles 3 of the needle bars 1 are temporally and / or spatially comparatively long in engagement with the material to be processed, which in turn leads to an improvement in the quality of the material to be fibrillated.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Nadelstabfaller
22
Trägerstabsupport bar
2a2a
Kurbelcrank
2b2 B
Lagerbohrungbearing bore
33
Nadelneedle
44
Ummantelungjacket
4a4a
dünnwandigster Bereich der Ummantelungthin walled area of the casing
4b4b
Ripperib
55
Nadellängsachseneedle longitudinal axis
66
TrägerstablängsachseSupport bar longitudinal axis
77
Führungsnutguide
88th
Kettenstreckechain track
99
KetteChain
1010
Abzugswalzeoff roll
1111
weitere Walzeanother roller
1212
weitere Walzeanother roller
AA
Vorschubrichtungfeed direction
DD
GesamtdurchmesserOverall diameter
MM
Mittelliniecenter line
aa
Abstand, NadelversatzDistance, needle offset
dd
TrägerstabdurchmesserCarrier bar diameter
mm
Rippendickerib thickness
tt
Kettenteilungchain pitch
vv
Auslaufweiteoutlet width

Claims (5)

  1. Faller bar (1) having a support bar (2) and a casing (4) surrounding the same and holding a number of pins (3) arranged adjacent to each other,
    - wherein the support bar (2) has a diameter (d) of 5.9 mm to 6.1 mm,
    - wherein the casing (4) has a thin-walled zone (4a) having a wall thickness (b) of 1.4 mm to 1.8 mm, and
    - wherein the distance (a) between the longitudinal axis (5) of every pin (3) in relation to the longitudinal axis (6) of the support bar (2) is larger than 2.15 mm.
  2. Faller bar (1) according to Claim 1, wherein the thin-walled zone (4a) of the casing (4) on the underside (4a) of the support rod (2) opposite to the pins (3) extends at least over half the circumference of the bar.
  3. Faller bar according to Claim 1 or 2, wherein the distance (a) is between 2.6 mm and 2.9 mm, and more particularly 2.75 mm.
  4. Chain drafting system (8) for a textile machine, with at least two transport chains (9), each with a number of faller bars (1) according to one of Claims 1 to 3.
  5. Chain drafting system (8) according to Claim 4, with a chain spacing of t = 9.525 mm and having a reduced delivery width (v) in the direction of a take-off roller (10) by an amount corresponding to the distance (a) between the longitudinal axis (5) of each pin (3) to the longitudinal axis (6) of the support bar (2).
EP07764681A 2006-07-27 2007-06-16 Needle strip for chain drawing frames Expired - Fee Related EP2047016B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200620011676 DE202006011676U1 (en) 2006-07-27 2006-07-27 Needle bar for chain tracks
US11/494,375 US20080022493A1 (en) 2006-07-27 2006-07-27 Needle bar for chain drawing frame
PCT/EP2007/005311 WO2008011937A1 (en) 2006-07-27 2007-06-16 Needle strip for chain drawing frames

Publications (2)

Publication Number Publication Date
EP2047016A1 EP2047016A1 (en) 2009-04-15
EP2047016B1 true EP2047016B1 (en) 2011-09-21

Family

ID=38610571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07764681A Expired - Fee Related EP2047016B1 (en) 2006-07-27 2007-06-16 Needle strip for chain drawing frames

Country Status (2)

Country Link
EP (1) EP2047016B1 (en)
WO (1) WO2008011937A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1176671A (en) * 1966-08-25 1970-01-07 Hanseatische Motoren Ges M B H Improvements in or relating to Gill Boxes for Stretching Fibre Webs.
US7159280B2 (en) * 2003-10-20 2007-01-09 Voshell Sr William E Disposable faller bar with improved core

Also Published As

Publication number Publication date
WO2008011937A1 (en) 2008-01-31
EP2047016A1 (en) 2009-04-15

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