EP1163180A1 - Yarn feeder and yarn brake body - Google Patents

Yarn feeder and yarn brake body

Info

Publication number
EP1163180A1
EP1163180A1 EP00916966A EP00916966A EP1163180A1 EP 1163180 A1 EP1163180 A1 EP 1163180A1 EP 00916966 A EP00916966 A EP 00916966A EP 00916966 A EP00916966 A EP 00916966A EP 1163180 A1 EP1163180 A1 EP 1163180A1
Authority
EP
European Patent Office
Prior art keywords
delivery device
brake band
thread
brake
membrane
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
EP00916966A
Other languages
German (de)
French (fr)
Other versions
EP1163180B1 (en
Inventor
Kurt Arne Gunnar Jacobsson
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.)
Iropa AG
Original Assignee
Iropa AG
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 Iropa AG filed Critical Iropa AG
Publication of EP1163180A1 publication Critical patent/EP1163180A1/en
Application granted granted Critical
Publication of EP1163180B1 publication Critical patent/EP1163180B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/366—Conical

Definitions

  • the invention relates to a thread efergerat of the type specified in the preamble of claim 1 and a thread brake body according to the preamble of claim 17
  • the holding membrane is a rubber or plastic ring membrane with a constant circumferential wall thickness between the holding area of the brake band and the support ring there are several bending zones with an arcuate cross-section.
  • the retaining membrane grips with a circular apron over the back of the brake band, which is glued to the apron Preload force applied
  • the thread must pass through the pull-off edge under the brake band, which defines a braking surface that is continuous in circumferential direction and has a substantially linear contact area with the pull-off edge.
  • the brake band In the passage area of the thread, the brake band is placed under B Formation of a crescent-like space lifted off the trigger edge Since the thread revolves around the trigger edge when the trigger is pulled, the crescent-shaped intermediate space also moves with the thread. In addition, the thread acts on the brake band as a result of the movement of the trigger, which causes the brake band to act locally on the The passage area of the thread is slightly deformed, which can cause waves in the inherently tensile but flexible brake band adjacent to the deformation area.
  • the holding membrane follows the working movements of the brake band, since the holding membrane has to transmit the axial pretensioning force to the brake band and center the brake band on the trigger edge
  • the local deformations of the brake band in each case in the vicinity of the passage area of the thread can result in a varying contact pressure at the pull-off edge of the storage body, which leads to an uneven thread tension course in the pulled thread.
  • the invention is based on the object of improving a thread delivery device of the type mentioned at the beginning and a thread brake body in such a way that a tension profile which is as uniform as possible can be achieved in the drawn thread or to minimize undefined deformation processes in the brake band and in the surrounding local area of the brake band in operation which runs the thread between the brake band and the trigger edge of the storage body
  • the support of the brake band in the holding membrane is improved unexpectedly with the flat areas with reduced wall thickness.
  • the wall thickness of the holding membrane or its degree of hardness can be higher than in the known holding membrane, so that the rigidity of the holder of the brake band is higher, which means the centering of the brake band on the Pull-off edge also benefits
  • a controlled deformation of the holding membrane between the holding area and the support ring is achieved through the flat areas during thread pull-off, in which undefined deformations of the brake band, which could lead to irregularities in the thread tension, are compensated for or swallowed.
  • the brake band behaves desirably because the holding membrane shows a sluggish response due to the flat areas with reduced wall thickness important self-compensation effect is achieved even up to the highest thread take-off speeds and with difficult thread qualities.
  • Another important advantage is that thanks to the reduced wall thickness in the flat areas there are no breakthroughs in which fluff can get stuck or the thread has been caught, especially when threading into the thread brake the manufacture of the holding membrane and the necessary injection molding tool is easier if, for the purpose of predetermined deformation behavior between the holding area and the support ring, the flat areas influencing the deformation behavior are not open, but are designed with a reduced wall thickness
  • the flat areas are expediently regularly distributed in the circumferential direction, so that they define spring spokes between them which carry out the main power transmission from the support ring into the brake band and are expediently formed in the wall thickness of the holding membrane, whereas the wall thickness in the flat areas is considerably less
  • the holding membrane In order to give the holding membrane a soft, relatively damped spring behavior, the holding membrane should have at least one bend between the holding area and the support ring, in which the spring spokes act like spiral springs and transmit the forces to the brake band
  • the flat areas with reduced wall thickness form gaps between the spring spokes, these gaps being filled with membrane layers similar to floating skin, at least adjacent to the holding area.
  • the flat areas can have any shape and, overall, can occupy an optional total proportion of the usable area
  • the circumferential widths of the flat areas are expediently different from the circumferential widths of the spring spokes, preferably smaller. However, it would also be possible to make the flat areas and the spring spokes approximately the same width in the circumferential direction
  • the wall thickness in the flat areas should be in a ratio of approx. 5 1 to the wall thickness in the spring spokes. This ratio can be deviated from
  • Both the flat areas and the spring spokes are expediently oriented approximately radially, so that the thread brake body can be used for any pull-off direction regardless of the thread pull-off direction from the storage body.
  • the brake band is effectively centered on the storage body
  • the flat areas are expediently of approximately oval shape, which is also advantageous in terms of production technology
  • the flat areas and the spring spokes should form an essentially smooth surface.
  • This surface which faces the inlet direction of the thread, ensures that no fluff can get stuck and the thread cannot get stuck, even if it does not Threading touches the surface.
  • the flat areas with the reduced wall thickness in the surface can be under a prestress, that is to say that the thin-walled membrane layer bridging the gaps is then stretched in one or more directions, so to speak
  • the bend is expediently extended inwards by a conical smooth-flat apron which supports the brake band on its rear side and dampens an excessively nervous or lively suspension behavior of the brake band
  • a cantilevered lip can be formed in the holding area, which delimits an open pocket for the brake band with the apron.
  • the brake band could be glued to the apron In most cases, however, it is sufficient to insert the brake band only into the pocket and secure it in place solely by the form fit In any case, operation is due to the system voltage of the brake body and the contact between the brake band and the apron determines the position of the brake band
  • the cantilever length of the lip could amount to about 10 to 25% of the brake band width. This facilitates the assembly or insertion and removal of the brake band and still ensures proper positioning of the brake band, even when the brake body is being transported
  • the flat areas with reduced wall thickness should start a short distance outside the insert pocket in which the brake band is positioned with its outer edge
  • the wall thickness of the aprons can be smaller than the wall thickness of the spring spokes, but larger than the wall thickness in the flat areas with reduced wall thickness
  • the holding diaphragm is expediently a one-piece molded molded part made of a plastic, such as polyurethane, for example.
  • a plastic such as polyurethane
  • the formation of the spring spokes required for the function of the holding diaphragm, which should come into play as a result of the interspaces, can be easily mastered in terms of shape if the interstices between the spring spokes are suitable for swimming pools a thin layer of the holding membrane is bridged. This considerably simplifies the manufacturing process of the holding membrane by injection molding and provides the advantage that, thanks to the floating membranes, the gaps can participate in the energy distribution or energy consumption and support of the brake band An embodiment of the subject matter of the invention is explained with the aid of the drawings
  • FIG. 1 is a schematic side view of a thread delivery device with a thread brake
  • FIG. 2 shows an axial section through a thread brake body, as can be used in the thread brake of FIG. 1,
  • FIG. 3 shows a rear view of the thread brake body of FIG. 2,
  • Fig. 4 is an enlarged section of the section of Fig. 2, and
  • FIG. 5 shows a further enlarged detail from FIG. 2
  • a thread delivery device F in FIG. 1 has the task of withdrawing a thread Y from a thread supply (not shown) (on the left in FIG. 1), temporarily storing it in turns on a stationary storage body 4 and by means of a thread brake B structurally integrated in the thread delivery device F with an approximately constant thread tension curve from a textile machine, for example a weaving machine, in a housing 1, a rotary drive 2 is provided for a winding element 2a, which, for example by means of signals from a sensor device 3, temporarily stores the thread in a sufficient supply size on the storage body 4 supporting arm 8 is provided in a carriage 7 adjustable for adjusting the braking action, a carrier 6 is provided which holds an annular thread brake body A in such a way that it is printed with a truncated cone-shaped brake band S shown in FIG.
  • the thread brake body A shown in FIGS. 2 to 5 with various details has a circular retaining membrane M made of rubber or plastic material, for example polyurethane in a transparent setting.
  • the retaining membrane M is expediently an integral injection molded molding, with a truncated cone-shaped, endless brake band S, preferably made of a metal alloy, is positioned in the inner region of the holding membrane M
  • the holding membrane M could also consist of a composite material, for example using Kevlar.
  • a conical apron 10 Adjacent to a circular holding area 11, a conical apron 10 extends inwards in the holding membrane M, which is on the back of the Brake band S rests and extends approximately to its inner edge area Outside the holding area 11, the holding membrane M is shaped with a generally C-shaped bend L, which has an approximately 90 ° transition into an outer, rigid to the brake band S support ring R ignore t If necessary, the support ring R is an independent component to which the holding membrane M is connected
  • the holding membrane M In the bend L there is an outer ring area 9 of the holding membrane M, which contains flat areas D (FIG. 4) with reduced wall thickness S1 distributed in the circumferential direction. These flat areas D form, for example, oval gaps (FIG. 3) between approximately radiating and into the ring area 9 the retaining membrane M integrated spring spokes E with the wall thickness S2
  • the wall thickness S2 can be in a ratio of approx. 5 1 to the wall thickness S1 in the flat areas D or spaces, so that with a wall thickness S2 of approx. 1.0 mm the wall thickness S1 approx. 0.
  • the flat areas D can be oval and in be oriented approximately radially to the axis of the thread brake body A, as well as the spring spokes G
  • the flat areas D are the same width as the spring spokes E, but the widths of the flat areas D could also be different (eg smaller) from the width of the spring spokes E Chen areas D begin at a distance from the holding area 11 for the brake band S
  • a circumferential lip 13 (FIG. 5) which projects freely inward is formed, which with the apron 10 forms a circumferential pocket T open for the outer edge of the brake band S
  • the cantilevered length of the lip 13 corresponds, for example, to one fifth of the width W of the brake band S.
  • the insertion pocket T lies approximately in the same radial plane as the transition from the ring region 9 into the support ring R.
  • the lip 13 could be omitted and the brake band S attached to the apron 10 by gluing
  • the radial extent of the ring area 9 of the holding membrane M corresponds approximately to the radially viewed extent of the brake band S.
  • the wall thickness of the aprons 10 can be less than the wall thickness S2 of the spring spokes, but larger than the wall thickness S1 of the membrane layers G, which in the flat areas D Bridging gaps between the spring spokes E In the embodiment shown, the flat areas are bridged continuously with the membrane layer G. It would be conceivable to bridge only the inner end areas of the flat areas D with the membrane layers G and to leave open passages open on the outside
  • the geometric shape of the flat areas D with reduced wall thickness S1 can be as desired, as can their distribution and orientation in the ring area 9 of the holding membrane.
  • the spring spokes E and the flat areas D are expediently regularly distributed in the circumferential direction

Abstract

A yarn feeder including a stationary storage body and a yarn brake having a brake element which axially contacts the storage body. The brake element is embodied by a truncated cone-shaped, thin-walled braking band which is held externally in an elastic, circular retaining membrane joined to a carrier ring that is concentric to the brake band. At least outside the retaining area for the brake band, several areas having a reduced wall thickness are provided in the retaining membrane.

Description

Fadenliefergerät und Fadenbremskörper Thread delivery device and thread brake body
Die Erfindung betrifft ein Faden efergerat der im Oberbegriff des Anspruchs 1 angegebenen Art sowie einen Fadenbremskorper gemäß Oberbegriff des Anspruchs 17The invention relates to a thread efergerat of the type specified in the preamble of claim 1 and a thread brake body according to the preamble of claim 17
Bei einem aus EP-A-0 686 128 bekannten Fadenbremskorper einer Fadenbremse eines Fadeπliefergerates, auf dem Markt unter der Bezeichnung "Flexbrake" bekannt, ist die Haltemembrane eine Gummi- oder Kunststoff-Ringmembrane mit in Umfangs- πchtung konstanter Wandstarke Zwischen dem Haltebereich des Bremsbandes und dem Tragring sind mehrere, im Querschnitt bogenförmige Biegezonen vorgesehen Die Haltemembrane greift mit einer kreisπngformigen Schurze über die Ruckseite des Bremsbandes, das an der Schurze festgeklebt ist Im Fadenliefergerat wird der Fadenbremskorper mit dem aus einer Metallegierung bestehenden Bremsband gegen einen gerundeten Abzugsrand des Speicherkorpers mit axialer Vorspannkraft angelegt Der Faden muss beim Abzug über den Abzugsrand unter dem Bremsband durchlaufen, das eine in Umfangsπchtung kontinuierliche Bremsflache definiert, die mit dem Abzugsrand einen im wesentlichen linienformigen Koπtaktbereich hat Im Durchgangsbereich des Fadens wird das Bremsband unter Bildung eines sichelarti- gen Zwischenraums vom Abzugsrand abgehoben Da der Faden beim Abzug um den Abzugsrand umlauft, bewegt sich auch der sichelförmige Zwischenraum mit dem Faden Außerdem beaufschlagt der Faden infolge der Abzugsbewegung das Bremsband mit einer Reibungskraft, die bewirkt, dass sich das Bremsband lokal beim Durchgangsbereich des Fadens etwas verformt, wodurch angrenzend an den Verformungsbereich Wellen im an sich zugfesten, aber biegeelastischen Bremsband entstehen können Die Haltemembrane folgt den Arbeitsbewegungen des Bremsbandes, da die Haltemembrane die axiale Vorspannkraft auf das Bremsband zu übertragen und das Bremsband auf dem Abzugsrand zu zentrieren hat Aus den lokalen Verformungen des Bremsbandes jeweils in der Nachbarschaft des Durchgangsbereiches des Fadens kann ein variierender Anlagedruck am Abzugsrand des Speicherkorpers resultieren, der im abgezogenen Faden zu einem ungleichförmigen Fadenspannungsverlauf fuhrt Dies beeinträchtigt das ansonsten wünschenswerte Selbstkom- pensationsverhalten solcher Fadenbremseπ, was bedeutet, dass das Bremsband bei ohnedies durch eine starke Beschleunigung des Fadens in Abzugsrichtung ansteigender Fadenspannung die Bremswirkung selbsttätig verringert und umgekehrt bei infolge einer starken Verzögerung des Fadens abnehmender Fadenspannung die Bremswirkung erhöht, um insgesamt ein möglichst gleichförmiges Fadenspannungsprofil einzuhaltenIn a thread brake body known from EP-A-0 686 128, a thread brake of a Fadeπ Liefergerats, known on the market under the name "Flexbrake", the holding membrane is a rubber or plastic ring membrane with a constant circumferential wall thickness between the holding area of the brake band and the support ring there are several bending zones with an arcuate cross-section. The retaining membrane grips with a circular apron over the back of the brake band, which is glued to the apron Preload force applied The thread must pass through the pull-off edge under the brake band, which defines a braking surface that is continuous in circumferential direction and has a substantially linear contact area with the pull-off edge. In the passage area of the thread, the brake band is placed under B Formation of a crescent-like space lifted off the trigger edge Since the thread revolves around the trigger edge when the trigger is pulled, the crescent-shaped intermediate space also moves with the thread. In addition, the thread acts on the brake band as a result of the movement of the trigger, which causes the brake band to act locally on the The passage area of the thread is slightly deformed, which can cause waves in the inherently tensile but flexible brake band adjacent to the deformation area.The holding membrane follows the working movements of the brake band, since the holding membrane has to transmit the axial pretensioning force to the brake band and center the brake band on the trigger edge The local deformations of the brake band in each case in the vicinity of the passage area of the thread can result in a varying contact pressure at the pull-off edge of the storage body, which leads to an uneven thread tension course in the pulled thread. This otherwise affects desirable self-compensation behavior of such thread brakes, which means that the brake band at anyway by a strong acceleration of the thread in the pulling direction increasing thread tension automatically reduces the braking effect and conversely increases the braking effect due to a strong deceleration of the thread decreasing the braking effect in order to maintain an overall uniform thread tension profile
Der Erfindung liegt die Aufgabe zugrunde, ein Fadenliefergerat der eingangs genannten Art sowie einen Fadenbremskorper so zu verbessern, dass sich im Betrieb ein möglichst gleichmäßiges Spannungsprofil im abgezogenen Faden erzielen lasst bzw Undefinierte Verformuπgsvorgange im Bremsband und in dem umlaufenden lokalen Bereich des Bremsbandes zu minimieren, in dem der Faden zwischen dem Bremsband und dem Abzugsrand des Speicherkorpers durchlauftThe invention is based on the object of improving a thread delivery device of the type mentioned at the beginning and a thread brake body in such a way that a tension profile which is as uniform as possible can be achieved in the drawn thread or to minimize undefined deformation processes in the brake band and in the surrounding local area of the brake band in operation which runs the thread between the brake band and the trigger edge of the storage body
Die gestellte Aufgabe wird mit den Merkmalen des Anspruchs 1 und des Anspruchs 17 gelostThe problem is solved with the features of claim 1 and claim 17
Unerwarteterweise wird mit den Flachenbereichen mit verringerter Wandstarke die Abstutzung des Bremsbandes in der Haltemembrane verbessert Die Wandstarke der Haltemembrane bzw ihr Härtegrad können hoher sein als bei der bekannten Haltemembrane, so dass die Steifigkeit der Halterung des Bremsbandes hoher ist, was der Zentrierung des Bremsbandes auf dem Abzugsrand zugute kommt Außerdem wird durch die Flachenbereiche beim Fadenabzug eine kontrollierte Deformation der Haltemembrane zwischen dem Haltebereich und dem Tragring erreicht, bei der Undefinierte Verformungen des Bremsbandes, die zu Unregelmäßigkeiten in der Fadenspannung fuhren konnten, ausgeglichen oder geschluckt werden Dieser Effekt zeigt sich dann, dass beim Umlauf des Fadens entlang der Innenseite des Bremsbandes der in der Haltemembrane jeweils beim Abzugspunkt liegende Flachenbereich mit der verringerten Wandstarke Kräfte aufnimmt und sich verformt (z B mit Beulen oder Eindruckungen) und so dazu beitragt, dass sich das Bremsband nicht Undefiniert verformt Der Spannungsverlauf im abgezogenen Faden wird gleichmäßiger Das Bremsband verhalt sich wünschenswert trage, da die Haltemembrane durch die Flachenbereiche mit verringerter Wandstarke ein träges Aπsprechverhalten zeigt Die wichtige Selbstkompensationswirkung wird selbst bis zu höchsten Fadenabzugsgeschwindigkeiten und bei schwierigen Fadeπqualitaten erbracht Ein weiterer wichtiger Vorteil liegt dann dass dank der verringerten Wandstarke in den Flachenbereichen keine Durchbruche entstehen in denen sich Flusen festsetzen oder der Faden, insbesondere beim Einfädeln in die Fadenbremse, verhangen wurde Schließlich sind die Herstellung der Haltemembrane und des notigen Spritzgusswerkzeuges einfacher wenn zwecks vorbestimmten Verformungsverhaltens zwischen dem Haltebereich und dem Tragring die das Verformungsverhalten beeinflussenden Flachenbereiche nicht offen, sondern mit verringerter Wandstarke ausgebildet werdenThe support of the brake band in the holding membrane is improved unexpectedly with the flat areas with reduced wall thickness. The wall thickness of the holding membrane or its degree of hardness can be higher than in the known holding membrane, so that the rigidity of the holder of the brake band is higher, which means the centering of the brake band on the Pull-off edge also benefits A controlled deformation of the holding membrane between the holding area and the support ring is achieved through the flat areas during thread pull-off, in which undefined deformations of the brake band, which could lead to irregularities in the thread tension, are compensated for or swallowed.This effect then shows that When the thread runs along the inside of the brake band, the flat area in the holding membrane at the point of withdrawal absorbs the reduced wall forces and deforms (e.g. with dents or impressions) and thus contributes to the fact that there s Brake band not deformed indefinitely. The tension curve in the drawn thread becomes more even. The brake band behaves desirably because the holding membrane shows a sluggish response due to the flat areas with reduced wall thickness important self-compensation effect is achieved even up to the highest thread take-off speeds and with difficult thread qualities.Another important advantage is that thanks to the reduced wall thickness in the flat areas there are no breakthroughs in which fluff can get stuck or the thread has been caught, especially when threading into the thread brake the manufacture of the holding membrane and the necessary injection molding tool is easier if, for the purpose of predetermined deformation behavior between the holding area and the support ring, the flat areas influencing the deformation behavior are not open, but are designed with a reduced wall thickness
Zweckmaßigerweise sind die Flachenbereiche in Umfangsπchtung regelmäßig verteilt, so daß sie zwischen sich Federspeichen definieren, die die hauptsächliche Kraftübertragung vom Tragring in das Bremsband ausfuhren und zweckmaßigerweise in der Wandstarke der Haltemembrane ausgebildet sind, dergegenuber die Wandstarke in den Flachenbereichen erheblich geringer istThe flat areas are expediently regularly distributed in the circumferential direction, so that they define spring spokes between them which carry out the main power transmission from the support ring into the brake band and are expediently formed in the wall thickness of the holding membrane, whereas the wall thickness in the flat areas is considerably less
Um der Haltemembrane ein weiches, relativ gedämpftes Federverhalten zu verleihen, sollte die Haltemembrane zwischen dem Haltebereich und dem Tragring wenigstens eine Biegung aufweisen, in der die Federspeichen wie Biegefedern wirken und die Kräfte auf das Bremsbaπd übertragenIn order to give the holding membrane a soft, relatively damped spring behavior, the holding membrane should have at least one bend between the holding area and the support ring, in which the spring spokes act like spiral springs and transmit the forces to the brake band
Die Flachenbereiche mit verringerter Wandstarke bilden Zwischenräume zwischen den Federspeichen, wobei diese Zwischenräume mit schwimmhautahnlichen Membranschichten ausgefüllt sind, zumindest angrenzend an den Haltebereich Die Flachenbereiche können beliebige Form haben und insgesamt einen wahlbaren Gesamtanteil der nutzbaren Flache beanspruchenThe flat areas with reduced wall thickness form gaps between the spring spokes, these gaps being filled with membrane layers similar to floating skin, at least adjacent to the holding area. The flat areas can have any shape and, overall, can occupy an optional total proportion of the usable area
Zweckmaßigerweise sind die Umfangsweiten der Flachenbereiche verschieden von den Umfangsweiten der Federspeichen, vorzugsweise kleiner Es wäre allerdings auch möglich, die Flachenbereiche und die Federspeichen in Umfangsπchtung in etwa gleich weit auszubilden Die Wandstarke in den Flachenbereichen sollte zur Wandstarke in den Federspeichen in einem Verhältnis von ca 5 1 stehen Von diesem Verhältnis kann abgewichen werdenThe circumferential widths of the flat areas are expediently different from the circumferential widths of the spring spokes, preferably smaller. However, it would also be possible to make the flat areas and the spring spokes approximately the same width in the circumferential direction The wall thickness in the flat areas should be in a ratio of approx. 5 1 to the wall thickness in the spring spokes. This ratio can be deviated from
Zweckmaßigerweise sind sowohl die Flachenbereiche als auch die Federspeichen in etwa radial orientiert Damit kann der Fadenbremskorper unabhängig von der Abzugsrichtung des Fadens vom Speicherkorper für jede Abzugsrichtung verwendet werden Außerdem ergibt sich unabhängig von der Fadenabzugsrichtung eine effektive Zentrierung des Bremsbandes auf dem SpeicherkorperBoth the flat areas and the spring spokes are expediently oriented approximately radially, so that the thread brake body can be used for any pull-off direction regardless of the thread pull-off direction from the storage body. In addition, regardless of the thread pull-off direction, the brake band is effectively centered on the storage body
Zweckmäßig sind die Flachenbereiche von annähernd ovaler Form was auch herstellungstechnisch vorteilhaft istThe flat areas are expediently of approximately oval shape, which is also advantageous in terms of production technology
An der konvexen Seite der Biegung sollten die Flachenbereiche und die Federspeichen eine im wesentlichen glatte Oberflache bilden Diese der Zulaufπchtung des Fadens zugewandte Oberflache stellt sicher, dass sich keine Fluseπ festsetzen können und auch der Faden nicht hangen bleiben kann, auch dann nicht, wenn er beim Einfädeln die Oberflache berührt Es können die Flachenbereiche mit der verringerten Wandstarke in der Flache unter einer Vorspannung stehen, d h , dass dann die die Zwischenräume überbrückende dünnwandige Membranschicht sozusagen in einem in einer oder mehreren Richtung gedehnten Zustand istOn the convex side of the bend, the flat areas and the spring spokes should form an essentially smooth surface. This surface, which faces the inlet direction of the thread, ensures that no fluff can get stuck and the thread cannot get stuck, even if it does not Threading touches the surface. The flat areas with the reduced wall thickness in the surface can be under a prestress, that is to say that the thin-walled membrane layer bridging the gaps is then stretched in one or more directions, so to speak
Zweckmaßigerweise wird die Biegung durch eine kegelige glattflachige Schurze nach innen verlängert, die das Bremsband an seiner Ruckseite abstutzt und ein zu nervöses oder lebendiges Federungsverhalten des Bremsbandes dampftThe bend is expediently extended inwards by a conical smooth-flat apron which supports the brake band on its rear side and dampens an excessively nervous or lively suspension behavior of the brake band
Im Haltebereich kann eine auskragende Lippe angeformt sein, die mit der Schurze eine offene Einstecktasche für das Bremsband begrenzt Das Bremsband konnte an der Schurze festgeklebt werden In den meisten Fallen reicht es jedoch aus, das Bremsband nur in die Einstecktasche einzusetzen und allein durch den Formschluss lagezusichern Im Betrieb ist ohnedies durch die Anlagespannung des Bremskorpers und dem Kontakt zwischen dem Bremsband und der Schurze die Position des Bremsbandes festgelegtA cantilevered lip can be formed in the holding area, which delimits an open pocket for the brake band with the apron.The brake band could be glued to the apron In most cases, however, it is sufficient to insert the brake band only into the pocket and secure it in place solely by the form fit In any case, operation is due to the system voltage of the brake body and the contact between the brake band and the apron determines the position of the brake band
Dabei konnte die Auskraglange der Lippe ca 10 bis 25 % der Bremsbandweite betragen Dies erleichtert die Montage bzw das Einsetzen und Herausnehmen des Bremsbandes und sichert trotzdem eine ordnungsgemäße Positionierung des Bremsbandes, auch beim Transport des BremskorpersThe cantilever length of the lip could amount to about 10 to 25% of the brake band width. This facilitates the assembly or insertion and removal of the brake band and still ensures proper positioning of the brake band, even when the brake body is being transported
Gunstige kinematische Verhaltnisse ergeben sich, wenn die Einstecktasche und ein Übergang der Haltemembrane in den Tragring in etwa in derselben Radialebene des Fadenbremskorpers liegenFavorable kinematic conditions result when the insert pocket and a transition of the holding membrane into the support ring lie approximately in the same radial plane of the thread brake body
Die Flachenbereiche mit verringerter Wandstarke sollten in einem kurzen Abstand außerhalb der Einstecktasche beginnen, in der das Bremsband mit seinem Außenrand positioniert istThe flat areas with reduced wall thickness should start a short distance outside the insert pocket in which the brake band is positioned with its outer edge
Die Wandstarke der Schurze kann kleiner sein als die Wandstarke der Federspeichen, jedoch großer als die Wandstarke in den Flachenbereichen mit verringerter WandstarkeThe wall thickness of the aprons can be smaller than the wall thickness of the spring spokes, but larger than the wall thickness in the flat areas with reduced wall thickness
Zweckmaßigerweise ist die Haltemembrane ein einstuckiger Spntzgussformteil aus einem zahelastischen Kunststoff wie beispielsweise Polyurethan Die Formung der für die Funktion der Haltemembrane erforderlichen Federspeichen, die durch Zwischenräume voneinander vereinzelt zur Wirkung kommen sollten, ist formentechnisch einfach beherrschbar, wenn die Zwischenräume zwischen den Federspeichen schwimm- hautahnlich durch eine dünne Schicht der Haltemembrane überbrückt sind Dies vereinfacht den Herstellungsprozess der Haltemembrane durch Spritzgießen erheblich und liefert den Vorteil, dass die Zwischenräume dank der Schwimmhaute an der E- nergieverteilung oder Energieaufzehrung und Abstutzung des Bremsbaπdes teilzunehmen vermögen Anhand der Zeichnungen wird eine Ausfuhrungsform des Erfindungsgegenstandes erläutert Es zeigenThe holding diaphragm is expediently a one-piece molded molded part made of a plastic, such as polyurethane, for example. The formation of the spring spokes required for the function of the holding diaphragm, which should come into play as a result of the interspaces, can be easily mastered in terms of shape if the interstices between the spring spokes are suitable for swimming pools a thin layer of the holding membrane is bridged. This considerably simplifies the manufacturing process of the holding membrane by injection molding and provides the advantage that, thanks to the floating membranes, the gaps can participate in the energy distribution or energy consumption and support of the brake band An embodiment of the subject matter of the invention is explained with the aid of the drawings
Fig 1 eine schematische Seitenansicht eines Fadenliefergerats mit einer Fadenbremse,1 is a schematic side view of a thread delivery device with a thread brake,
Fig 2 einen Achsschnitt durch einen Fadenbremskorper, wie er in der Fadenbremse von Fig 1 verwendet werden kann,2 shows an axial section through a thread brake body, as can be used in the thread brake of FIG. 1,
Fig 3 eine Ruckansicht des Fadenbremskorpers von Fig 2,3 shows a rear view of the thread brake body of FIG. 2,
Fig 4 einen vergrößerten Ausschnitt des Schnitts von Fig 2, undFig. 4 is an enlarged section of the section of Fig. 2, and
Fig 5 einen weiteren vergrößerten Ausschnitt aus Fig 25 shows a further enlarged detail from FIG. 2
Ein Fadenliefergerat F in Fig 1 hat die Aufgabe, einen Faden Y von einem nicht- gezeigten Fadenvorrat (in Fig 1 links) abzuziehen, in Windungen auf einem stationären Speicherkorper 4 zwischenzuspeichern und durch eine in das Fadenliefergerat F baulich integrierte Fadenbremse B mit annähernd gleichbleibendem Fadenspannungsverlauf von einer Textilmaschine, beispielsweise einer Webmaschine, abziehen zu lassen In einem Gehäuse 1 ist ein Drehantrieb 2 für ein Aufwickelelement 2a vorgesehen, der, beispielsweise mittels Signalen einer Sensorvorrichtung 3, den Faden in stets ausreichender Vorratsgroße auf dem Speicherkorper 4 zwischenspeichert An einem eine Abzugsose 5 tragenden Gehauseausleger 8 ist in einem zur Einstellung der Bremswirkung verstellbaren Schlitten 7 ein Trager 6 vorgesehen, der einen ringförmigen Fadenbremskorper A derart haltert, dass dieser mit einem in Fig 2 gezeigten, kegelstumpfformigen Bremsband S an einen gerundeten Abzugsrand des Speicherkorpers 4 angedruckt wird Der Faden Y wird beim Abzug zwischen dem Abzugsrand und der Innenflache des Bremsbandes durchgezogen, wobei sein Fadeπab- zugspunkt umlauft Der in den Fig 2 bis 5 mit verschiedenen Details gezeigte Fadenbremskorper A weist eine kreisπngformige Haltemembrane M aus Gummi- oder Kunststoffmaterial auf, z B Polyurethan in transparenter Einstellung Die Haltemembrane M ist zweckmaßigerweise ein emstuckiges Spπtzgussformteil, wobei ein kegelstumpfformiges, endloses Bremsband S, vorzugsweise aus einer Metallegierung, im Innenbereich der Haltemembrane M positioniert ist Die Haltemembraπe M konnte auch aus einem Verbundmaterial bestehen, z B unter Verwendung von Kevlar Angrenzend an einen kreisförmigen Haltebereich 11 erstreckt sich in der Haltemembrane M eine kegelige Schurze 10 nach innen, die an der Ruckseite des Bremsbandes S anliegt und annähernd bis zu dessen Innenrandbereich verlauft Außerhalb des Haltebereiches 11 ist die Haltemembrane M mit einer im allgemeinen C-formigen Biegung L geformt, die u- ber einen annähernd 90°-Ubergaπg in einen äußeren, zum Bremsband S konzentrischen und formsteifen Tragring R übergeht Gegebenenfalls ist der Tragring R ein eigenständiger Bauteil, mit dem die Haltemembrane M verbunden istA thread delivery device F in FIG. 1 has the task of withdrawing a thread Y from a thread supply (not shown) (on the left in FIG. 1), temporarily storing it in turns on a stationary storage body 4 and by means of a thread brake B structurally integrated in the thread delivery device F with an approximately constant thread tension curve from a textile machine, for example a weaving machine, in a housing 1, a rotary drive 2 is provided for a winding element 2a, which, for example by means of signals from a sensor device 3, temporarily stores the thread in a sufficient supply size on the storage body 4 supporting arm 8 is provided in a carriage 7 adjustable for adjusting the braking action, a carrier 6 is provided which holds an annular thread brake body A in such a way that it is printed with a truncated cone-shaped brake band S shown in FIG. 2 on a rounded trigger edge of the storage body 4 d The thread Y is pulled through between the pull-off edge and the inner surface of the brake band, with its thread-pulling point revolving The thread brake body A shown in FIGS. 2 to 5 with various details has a circular retaining membrane M made of rubber or plastic material, for example polyurethane in a transparent setting. The retaining membrane M is expediently an integral injection molded molding, with a truncated cone-shaped, endless brake band S, preferably made of a metal alloy, is positioned in the inner region of the holding membrane M The holding membrane M could also consist of a composite material, for example using Kevlar. Adjacent to a circular holding area 11, a conical apron 10 extends inwards in the holding membrane M, which is on the back of the Brake band S rests and extends approximately to its inner edge area Outside the holding area 11, the holding membrane M is shaped with a generally C-shaped bend L, which has an approximately 90 ° transition into an outer, rigid to the brake band S support ring R ignore t If necessary, the support ring R is an independent component to which the holding membrane M is connected
In der Biegung L liegt ein äußerer Ringbereich 9 der Haltemembrane M vor, der in Umfangsπchtung verteilte Flachenbereiche D (Fig 4) mit verringerter Wandstarke S1 enthalt Diese Flachenbereiche D bilden beispielsweise ovale Zwischenräume (Fig 3) zwischen in etwa strahlenförmig angeordneten und in den Ringbereich 9 der Haltemembrane M integrierte Federspeichen E mit der Wandstarke S2 Die Wandstarke S2 kann zur Wandstarke S1 in den Flachenbereichen D bzw Zwischenräumen in einem Verhältnis von ca 5 1 stehen, so dass bei einer Wandstarke S2 von ca 1 ,0 mm die Wandstarke S1 ca 0,2 mm sein kann An der Einlaufseite des Fadens Y unter das Bremsband S liegt im Ringbereich 9 eine im wesentlichen glatte Oberflache 12 vor, wahrend an der Ruckseite im Ringbereich 9 durch die verringerte Wandstarke S1 nutartige Vertiefungen vorhanden sind Die Flachenbereiche D können oval sein und in etwa radial zur Achse des Fadenbremskorpers A orientiert sein, wie auch die Federspeichen GIn the bend L there is an outer ring area 9 of the holding membrane M, which contains flat areas D (FIG. 4) with reduced wall thickness S1 distributed in the circumferential direction. These flat areas D form, for example, oval gaps (FIG. 3) between approximately radiating and into the ring area 9 the retaining membrane M integrated spring spokes E with the wall thickness S2 The wall thickness S2 can be in a ratio of approx. 5 1 to the wall thickness S1 in the flat areas D or spaces, so that with a wall thickness S2 of approx. 1.0 mm the wall thickness S1 approx. 0. At the inlet side of the thread Y under the brake band S there is an essentially smooth surface 12 in the ring area 9, while on the back in the ring area 9 there are groove-like depressions due to the reduced wall thickness S1. The flat areas D can be oval and in be oriented approximately radially to the axis of the thread brake body A, as well as the spring spokes G
Bei der gezeigten Ausfuhrungsform sind in Umfangsπchtung die Flachenbereiche D gleich weit wie die Federspeichen E Die Weiten der Flachenbereiche D konnten aber auch verschieden (z B kleiner) sein von den Weiten der Federspeichen E Die Fla- chenbereiche D beginnen in einem Abstand vom Haltebereich 11 für das Bremsband S Im Haltebereich 11 ist eine umlaufende, nach innen frei auskragende Lippe 13 (Fig 5) angeformt, die mit der Schurze 10 eine nach innen offene, umlaufende Emsteckta- sche T für den Außenrand des Bremsbandes S bildet Die Auskraglange der Lippe 13 entspricht beispielsweise einem Fünftel der Breite W des Bremsbandes S Die Ein- stecktasche T liegt in etwa in derselben Radialebene wie der Übergang vom Ringbereich 9 in den Tragring RIn the embodiment shown, the flat areas D are the same width as the spring spokes E, but the widths of the flat areas D could also be different (eg smaller) from the width of the spring spokes E Chen areas D begin at a distance from the holding area 11 for the brake band S In the holding area 11, a circumferential lip 13 (FIG. 5) which projects freely inward is formed, which with the apron 10 forms a circumferential pocket T open for the outer edge of the brake band S The cantilevered length of the lip 13 corresponds, for example, to one fifth of the width W of the brake band S. The insertion pocket T lies approximately in the same radial plane as the transition from the ring region 9 into the support ring R.
Alternativ konnte die Lippe 13 weggelassen und das Bremsband S an der Schurze 10 durch Kleben befestigt seinAlternatively, the lip 13 could be omitted and the brake band S attached to the apron 10 by gluing
Die radiale Erstreckung des Ringbereichs 9 der Haltemembrane M entspricht annähernd der radial gesehenen Erstreckung des Bremsbandes S Die Wandstarke der Schurze 10 kann geringer sein als die Wandstarke S2 der Federspeichen ist, jedoch großer als die Wandstarke S1 der Membranschichten G, die in den Flachenbereichen D die Zwischenräume zwischen den Federspeichen E überbrücken Bei der dargestellten Ausfuhrungsform sind die Flachenbereiche durchgehend mit der Membranschicht G überbrückt Es wäre denkbar, nur die inneren Endbereiche der Flachenbereiche D mit den Membranschichten G zu überbrücken und außen offene Durchgange freizulassenThe radial extent of the ring area 9 of the holding membrane M corresponds approximately to the radially viewed extent of the brake band S. The wall thickness of the aprons 10 can be less than the wall thickness S2 of the spring spokes, but larger than the wall thickness S1 of the membrane layers G, which in the flat areas D Bridging gaps between the spring spokes E In the embodiment shown, the flat areas are bridged continuously with the membrane layer G. It would be conceivable to bridge only the inner end areas of the flat areas D with the membrane layers G and to leave open passages open on the outside
Die geometrische Form der Flachenbereiche D mit verringerter Wandstarke S1 kann beliebig sein, wie auch ihre Verteilung und Orientierung im Ringbereich 9 der Haltemembrane Zweckmaßigerweise sind die Federspeichen E und die Flachenbereiche D in Umfangsrichtung regelmäßig verteilt The geometric shape of the flat areas D with reduced wall thickness S1 can be as desired, as can their distribution and orientation in the ring area 9 of the holding membrane. The spring spokes E and the flat areas D are expediently regularly distributed in the circumferential direction

Claims

Patentansprüche claims
1 Fadenliefergerat (F) mit stationärem Speicherkorper (4) und einer Fadenbremse (B) mit einem axial gegen den Speicherkorper (4) angelegten, ringförmigen Bremskorper (A), bestehend aus einem kegelstumpfformigen dünnwandigen Bremsband (S), das zumindest mit seinem Außenrandbereich in einer elastischen, kreisπngformigen Haltemembrane (M) aus Kunststoff-, Gummi- oder Verbundmateπal gehaltert ist, die außerhalb des Haltebereichs (11) des Bremsbandes mit einem zum Bremsband (S) konzentrischen, außenliegenden Tragring (R) verbunden ist, dadurch gekennzeichnet, dass in der Haltemembrane (M) zumindest zwischen dem Tragring (R) und dem Haltebereich (11) für das Bremsband (9) in Umfangsπchtung verteilt mehrere Flachenbereiche (D) mit verringerter Wandstarke (S1) vorgesehen sind1 thread delivery device (F) with stationary storage body (4) and a thread brake (B) with an axially against the storage body (4), ring-shaped brake body (A), consisting of a truncated cone-shaped thin-walled brake band (S), which at least with its outer edge area in an elastic, circular-shaped holding membrane (M) made of plastic, rubber or composite material is held, which is connected outside the holding area (11) of the brake band with an outer support ring (R) concentric with the brake band (S), characterized in that in the holding membrane (M) at least between the support ring (R) and the holding area (11) for the brake band (9) distributed in circumferential direction, several flat areas (D) with reduced wall thickness (S1) are provided
2 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Flachenbereiche (D) in Umfangsπchtung regelmäßig verteilt sind und zwischen sich in die Haltemembrane (M) integrierte Federspeichen (E) definieren2 yarn delivery device according to claim 1, characterized in that the flat areas (D) are regularly distributed in circumferential direction and define spring spokes (E) integrated between them in the holding membrane (M)
3 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Halte- membraπe (M) im Querschnitt und zwischen dem Haltebereich (11) und dem Tragring (R) wenigstens eine annähernd C-formige Biegung (L) aufweist3 yarn delivery device according to claim 1, characterized in that the holding membrane (M) in cross-section and between the holding area (11) and the support ring (R) has at least an approximately C-shaped bend (L)
4 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Flachenbereiche (D) zumindest nahe dem Haltebereich (11 ) mit jeweils einer schwimmhautahπ- lichen Membranschicht (G) überbrückte Zwischenräume zwischen Federspeichen (E) sind4 yarn delivery device according to claim 1, characterized in that the flat areas (D) at least near the holding area (11) with a membrane layer (G) close to the floating skin are gaps between spring spokes (E)
5 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass - in Umfangs- πchtung - die Weiten der Flachenbereiche (D) verschieden sind von den Weiten der Federspeichen (E), vorzugsweise kleiner als diese, oder in etwa gleich sind 6 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Wandstarke (S2) der Federspeichen (E) zu der Wandstarke (S1) in den Membranschichten (G) im Verhältnis von ca 5 1 steht, z B 1 ,0 mm zu 0,2 mm5 yarn delivery device according to claim 1, characterized in that - in circumference πchtung - the widths of the flat areas (D) are different from the widths of the spring spokes (E), preferably smaller than this, or are approximately the same 6 yarn delivery device according to claim 1, characterized in that the wall thickness (S2) of the spring spokes (E) to the wall thickness (S1) in the membrane layers (G) is in a ratio of about 5 1, for example 1.0 mm to 0.2 mm
7 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Federspeichen (E) und die Flachenbereiche (D) - in Ansichtsrichtung entlang der Kegelstumpfachse des Bremsbandes (S) - in etwa radial orientiert sind7 yarn delivery device according to claim 1, characterized in that the spring spokes (E) and the flat areas (D) - in the viewing direction along the truncated cone axis of the brake band (S) - are oriented approximately radially
8 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Flachenbereiche (D) angenähert ovale Form haben8 yarn delivery device according to claim 1, characterized in that the flat areas (D) have approximately oval shape
9 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Federspeichen (E) und die Flachenbereiche (D) an der konvexen Seite der Biegung (L) eine im wesentlichen glatte Oberflache (12) bilden9 yarn delivery device according to claim 1, characterized in that the spring spokes (E) and the flat areas (D) on the convex side of the bend (L) form a substantially smooth surface (12)
10 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass die Biegung (L) durch eine kegelige glattflachige Schurze (10) nach innen verlängert ist, die beim Innenrandbereich des Bremsbaπdes (S) endet10 yarn delivery device according to claim 1, characterized in that the bend (L) is extended inwards by a conical smooth-flat apron (10) which ends at the inner edge region of the brake band (S)
11 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass im Haltebereich (11 ) eine umlaufende, nach innen frei auskragende Lippe (13) angeformt ist, die mit der Schurze (10) eine kreisförmige, nach innen offene Einstecktasche (T) für das Bremsband (S) begrenzt11 thread delivery device according to claim 1, characterized in that in the holding area (11) a circumferential, inwardly projecting lip (13) is formed, with the apron (10) a circular, inwardly open pocket (T) for the brake band ( S) limited
12 Fadenliefergerat nach Anspruch 11 , dadurch gekennzeichnet, dass die Auskraglange der Lippe ca 10 bis 25 % der Bremsbandbreite (W) betragt12 yarn delivery device according to claim 11, characterized in that the cantilever length of the lip is about 10 to 25% of the brake bandwidth (W)
13 Fadenliefergerat nach Anspruch 11 , dadurch gekennzeichnet, dass die Em- stecktasche (T) und ein Übergang der Haltemembrane (M) in den Tragring (R) in etwa in derselben Radialebene des Fadenbremskorpers (A) liegen 14 Fadenliefergerat nach Anspruch 1 , dadurch gekennzeichnet, dass jeder Fla- chenbereich mit einem Abstand von der Einstecktasche (T) beginnt, der etwa der freien Auskraglange der Lippe (13) entspricht13 yarn delivery device according to claim 11, characterized in that the Em pocket (T) and a transition of the holding membrane (M) in the support ring (R) are approximately in the same radial plane of the thread brake body (A) 14 thread delivery device according to claim 1, characterized in that each area begins with a distance from the insertion pocket (T) which corresponds approximately to the free projection length of the lip (13)
15 Fadenliefergerat nach Anspruch 10, dadurch gekennzeichnet, dass die Wandstarke der Schurze (10) kleiner als die Wandstarke (S2) der Federspeichen (E) und großer als die der Membranschichten (G) ist15 yarn delivery device according to claim 10, characterized in that the wall thickness of the apron (10) is smaller than the wall thickness (S2) of the spring spokes (E) and larger than that of the membrane layers (G)
16 Fadenbremskorper nach wenigstens einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass die Haltemembrane (M) ein einstuckiger Spritzgussformteil aus einem Kunststoff-, Gummi- oder Verbundmaterial ist, vorzugsweise aus Polyurethan- Kunststoff, vorzugsweise in semitransparenter Einstellung.16 thread brake body according to at least one of claims 1 to 15, characterized in that the holding membrane (M) is a one-piece injection molded part made of a plastic, rubber or composite material, preferably made of polyurethane plastic, preferably in a semi-transparent setting.
17 Fadenbremskorper für ein Fadenliefergerat mit stationärem Speicherkorper, bestehend aus einem kegelstumpfformigen dünnwandigen Bremsband (S), das zumindest mit seinem Außenrandbereich in einer elastischen, kreisπngformigen Haltemembrane (M) aus Kunststoff-, Gummi- oder Verbundmateπal gehaltert ist, die außerhalb des Haltebereichs (11) des Bremsbandes mit einem zum Bremsbaπd (S) konzentrischen, außenliegenden Tragring (R) verbunden ist, dadurch gekennzeichnet, dass in der Haltemembrane (M) zumindest zwischen dem Tragring (R) und dem Haltebereich (11) für das Bremsband (9) mehrere Flachenbereiche (D) mit verringerter Wandstarke (S1) vorgesehen sind 17 thread brake body for a thread delivery device with a stationary storage body, consisting of a truncated cone-shaped thin-walled brake band (S) which is held at least with its outer edge area in an elastic, circular-shaped holding membrane (M) made of plastic, rubber or composite material, which is outside the holding area (11 ) of the brake band is connected to an outer support ring (R) which is concentric with the brake band (S), characterized in that in the holding membrane (M) at least between the support ring (R) and the holding area (11) for the brake band (9) Flat areas (D) with reduced wall thickness (S1) are provided
EP00916966A 1999-03-17 2000-03-16 Yarn feeder and yarn brake body Expired - Lifetime EP1163180B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19911943 1999-03-17
DE19911943A DE19911943A1 (en) 1999-03-17 1999-03-17 Thread delivery device and thread brake body
PCT/EP2000/002362 WO2000055081A1 (en) 1999-03-17 2000-03-16 Yarn feeder and yarn brake body

Publications (2)

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EP1163180A1 true EP1163180A1 (en) 2001-12-19
EP1163180B1 EP1163180B1 (en) 2003-05-28

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US (1) US6637692B1 (en)
EP (1) EP1163180B1 (en)
KR (1) KR100457304B1 (en)
CN (1) CN1201990C (en)
AT (1) ATE241558T1 (en)
DE (2) DE19911943A1 (en)
WO (1) WO2000055081A1 (en)

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Publication number Priority date Publication date Assignee Title
ITTO20010260A1 (en) * 2001-03-20 2002-09-20 Lgl Electronics Spa SELF-REGULATING BRAKING DEVICE FOR DITRAMA POWER SUPPLIES.

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Publication number Priority date Publication date Assignee Title
IT1133900B (en) * 1980-10-15 1986-07-24 Roy Electrotex Spa MEANS FOR BRAKING THE OUTPUT YARN IN CONSTANT AND ADJUSTABLE TENSION FEED DEVICES, PARTICULARLY FOR TEXTILE MACHINES
DE69132780T2 (en) * 1990-03-12 2002-04-18 Iro Ab yarn feeder
EP0534263B1 (en) * 1991-09-20 1997-12-17 L.G.L. ELECTRONICS S.p.A. Self-adjusting thread braking device for weft feeder units
IT1256329B (en) * 1992-11-23 1995-11-30 WIRE FEEDING DEVICE
IT1263623B (en) * 1993-02-23 1996-08-27 Roj Electrotex Nuova Srl WIRE FEEDER
IT1264844B1 (en) * 1993-06-17 1996-10-17 Roj Electrotex Nuova Srl WIRE FEEDER
SE9303266L (en) * 1993-09-15 1995-03-16 Iro Ab Weaving machine with projectile or gripper device and feeder device for the weft thread
US5546994A (en) * 1994-10-14 1996-08-20 Sobrevin Societe De Brevets Industriels-Etablissement Thread storage drum with frustoconical brake strip
DE19613055A1 (en) * 1996-04-01 1997-10-02 Iro Ab Axial disc brake and thread delivery device with axial disc brake
DE19634972A1 (en) * 1996-08-29 1998-03-05 Iro Ab Device for braking a thread and thread delivery device
SE9700666D0 (en) * 1997-02-24 1997-02-24 Iro Ab Fadenliefer device and fade brake
ITMI981313A1 (en) * 1998-06-10 1999-12-10 Roj Electrotex Nuova Srl BRAKE FOR YARNS ESPECIALLY FOR WEFT FEEDERS

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Title
See references of WO0055081A1 *

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CN1201990C (en) 2005-05-18
DE50002363D1 (en) 2003-07-03
EP1163180B1 (en) 2003-05-28
US6637692B1 (en) 2003-10-28
KR20020002403A (en) 2002-01-09
DE19911943A1 (en) 2000-09-21
KR100457304B1 (en) 2004-11-16
ATE241558T1 (en) 2003-06-15
CN1352617A (en) 2002-06-05
WO2000055081A1 (en) 2000-09-21

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EP0310696A1 (en) Hollow cop and method for its production

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