EP0310820A2 - Yarn storage and delivery device for textile machines, in particular knitting machines - Google Patents

Yarn storage and delivery device for textile machines, in particular knitting machines Download PDF

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Publication number
EP0310820A2
EP0310820A2 EP88114653A EP88114653A EP0310820A2 EP 0310820 A2 EP0310820 A2 EP 0310820A2 EP 88114653 A EP88114653 A EP 88114653A EP 88114653 A EP88114653 A EP 88114653A EP 0310820 A2 EP0310820 A2 EP 0310820A2
Authority
EP
European Patent Office
Prior art keywords
thread
delivery device
adjustable
brake
storage
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
EP88114653A
Other languages
German (de)
French (fr)
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EP0310820B1 (en
EP0310820A3 (en
Inventor
Heinz Brunner
Karl-Jürgen Sauter
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.)
Sipra Patententwicklungs und Beteiligungs GmbH
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Sipra Patententwicklungs und Beteiligungs GmbH
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Publication date
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Publication of EP0310820A2 publication Critical patent/EP0310820A2/en
Publication of EP0310820A3 publication Critical patent/EP0310820A3/en
Application granted granted Critical
Publication of EP0310820B1 publication Critical patent/EP0310820B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/44—Tensioning devices for individual threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/16—Braked elements rotated by material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B65H63/061—Mechanical slub catcher and detector
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a thread storage and delivery device for textile machines, in particular knitting machines, with a housing with a drivable thread storage drum, on which the thread fed and removed thread is placed in several turns, and with a knot guard connected upstream of the thread storage drum and an adjustable thread brake.
  • So-called feeders of the type mentioned above are known in manifold embodiments.
  • the thread is fed to these devices via thread guide eyelets, on which thread deflection already takes place.
  • An adjustable plate brake is predominantly provided as the thread brake arranged on the device housing.
  • a knot guard can be installed upstream, predominantly knot guards with whom the thread is being used running gap is limited at least on one side by a rigid part. All of these parts, depending on the thread material processed, form a more or less large thread abrasion, i.e. they form fiber fluff, which can contaminate the organs mentioned themselves or is undesirably passed on to the thread storage drum, where fiber rings can form from the fluff.
  • the invention has for its object to provide a thread storage and delivery device of the type mentioned in such a way that it has as few organs for thread control and thread guidance on the thread inlet side and is designed so that fluff formation is largely prevented.
  • the thread brake which is arranged on the device housing immediately after a thread guide, is combined with the knot guard and this combination consists of two freely rotatable axially parallel rollers, one of which is adjustable against the other against brake spring force, that the maximum displacement of the adjustable roller is limited by an adjustable stop and that the thread is deflected over the roller mounted on an immovable axis.
  • the thread storage and delivery device designed according to the invention is therefore provided with a combination of a thread brake and a knot monitor, which itself produces practically no thread abrasion and whose rotating rollers prevent the accumulation of fiber fluff.
  • the arrangement of the thread brake rollers immediately behind a thread guide element, which can advantageously be at the end of a thread guide tube, has the advantage that this thread guide element, which is usually designed as a rigid thread guide eyelet, is largely released from its thread guide function, so that hardly any fluff can form on it.
  • the roller of the combined brake and thread monitor device which is mounted on an immovable axis, forms a thread-protecting deflection element which also absorbs the thread tension forces, which may have change peaks, so that changes in thread tension cannot influence the effect of the thread brake.
  • the thread storage and delivery device designed according to the invention also facilitates operation, in particular if the rollers of the combined brake and knot guard device are overhung, so that a thread that is advanced through the thread guide tube to the rollers by means of air is laterally between the two Rolls in.
  • the adjustable roller of the combined brake and knot guard device can be mounted at the free end of a swivel arm arranged in the device housing, on which the spring, which is adjustable in its force effect and can also be arranged in the housing, acts and on which also acts the adjustable stop arranged in the device housing.
  • the braking force and the maximum passage gap between the two rollers can be changed independently.
  • two separate set screws can advantageously be provided in the device housing, the starting point of the brake spring and the stop point expediently having a different distance from the fulcrum the swivel arm can be arranged.
  • the brake spring can be set here at a point that gives a favorable torque on the swivel lever.
  • the thread can be fed radially and tangentially to the thread storage drum from the combined brake and thread monitor device.
  • the thread sensor arrangement usually arranged between the thread brake and the thread storage drum with a feeler lever resting on the running thread is only an insignificant cause of fluff.
  • Fluff fed through the thread guide tube is practically completely lifted off the thread on the rollers of the combined brake and knot monitor device.
  • the thread storage drum is therefore fed predominantly fluff-free thread.
  • the combined brake and knot guard device creates organs that outperform braking devices previously used by suppliers with regard to the uniformity of the braking force and also bring improvements over previously upstream knot guards, which formed an additional fluff formation point.
  • FIG. 1 shows an elongated device housing 10 of the thread storage and delivery device, which is designed as a hollow body in a manner not shown, and which has a recess 11 in the vicinity of its one end, into which a mounting rail 12 of a textile machine engages.
  • the device housing 10 is clamped on the mounting rail 12 by means of a clamping screw 13.
  • a thread storage drum 14 is arranged on the underside of the device housing 10 and is fixedly connected to a shaft, not shown, which is guided vertically through the device housing 10 and is mounted in the device housing.
  • two pulleys 15 and 16 are mounted, which can be coupled in a known manner by means of an axially adjustable coupling disk 17 arranged between the two pulleys 15 and 16, optionally with the shaft and thus with the thread storage drum 14.
  • two thread guide brackets 18 and 19 are arranged one behind the other in the direction of thread passage behind the thread storage drum 14, via which the thread 20 discharged tangentially from the thread storage drum 14 is guided and between which a sensor in the form of a swivel lever mounted in the device housing 10 is guided on the thread 34 rests, which belongs to a known thread monitoring device. If the swivel lever 34 falls out of its position shown in FIG. 1 with the thread 20 missing, a switch of the control part of the device is actuated, via which the textile machine is switched off.
  • a combined thread brake and knot monitor device 21 is arranged in the free end region of the device housing 10, which is explained in more detail below in connection with FIGS. 2 to 4.
  • the device 21 is located on the underside of the device housing 10.
  • the thread is fed through a thread guide eyelet 22 directly in front, which is arranged at the end of a vertical housing passage channel, which is formed at least in sections by a plug-in sleeve (FIG. 2) into which the End of a thread guide tube 24 can be inserted.
  • the combined thread brake and knot monitor device has two interacting, axially parallel cylindrical rollers 25 and 26 or rollers with a smooth surface, each of which is floating and freely rotatable on a journal 27 or 28.
  • the journal 27 for the one roller 25 is attached to the device housing 10.
  • the journal 28 for the other roller 26 is attached to the free end of a cranked lever 29 which is pivotable about an axis 30 in the device housing 10.
  • the roller 26 mounted on the swivel lever 29 is, viewed in the axial direction of the thread guide eye 22 in front, arranged at a greater center distance from the thread guide eye 22 than the rigidly mounted other roller 25, the circumference of the rigidly mounted roller 25 projecting at least approximately to the longitudinal axis of the thread guide eye 22 so that the thread 20 arriving through the thread guide tube 24 runs onto the roller 25 practically without touching the thread guide eyelet 22, which at the same time forms a deflection roller for the thread.
  • two threaded bores are formed side by side, which are each occupied by a set screw 31 or 32. Both threaded holes extend into the area of the horizontally extending section 29.1 in FIG. 2 of the cranked pivot lever 29 accommodated in a slot of the device housing 10.
  • a helical compression spring 33 is arranged, which on the one hand on the section 29.1 of the pivot lever 29 and on the other hand on the Set screw 31 is supported. With its inner end 32.1, the adjusting screw 32 in the other threaded bore forms a stop that limits the pivoting movement of the cranked pivoting lever 29.
  • the tension force of the helical compression spring 33 can be adjusted, which acts on the pivot lever 29 and thereby determines the braking force which is exerted on the thread 20 passing between the two rollers 25 and 26.
  • the other set screw 32 with its stop end 32.1 determines the maximum gap 34 shown in FIG. 3, which is formed between the two rollers 25 and 26 can, if a knot 35 contained in the thread 20 forces the two rollers 25 and 26 apart. If the node 35 is thicker than the width of the set gap 34, it cannot pass the two rollers 25 and 26.
  • the two rollers 25 and 26 form a knot guard here.
  • a thread break monitor is arranged in a known manner, which has a feeler 36 resting on the thread 20 running to the thread storage drum 14.
  • the thread 20 on the feeler lever 36 according to FIG. 1 can undergo a deflection or according to FIGS. 2 and 3 no deflection.
  • the thread 20 passes through a thread guide bracket 37 in front of the thread storage drum 14.

Abstract

The yarn storage and delivery device has, on the yarn entry side, a combined yarn-braking and knot-monitoring device (21) consisting of two rollers (25, 26) which interact with one another and of which one (25), via which the yarn (20) is deflected, is mounted freely on an immovable axle, whilst the other roller (26) is mounted on a pivoting arm (29), on which acts a spring (33) determining the braking force and adjustable via a set screw (31) and the pivoting range of which is determined by an adjustable stop (32.1) which determines the size of the knot-monitoring gap (34) between the two rollers (25, 26). The device (21) is arranged directly behind a yarn guide member (22), to which the yarn (20) is fed by a yarn guide tube (24). …<IMAGE>…

Description

Die Erfindung betrifft eine Fadenspeicher- und -liefervor­richtung für Textilmaschinen, insbesondere Strickmaschi­nen, mit einem Gehäuse mit einer antreibbaren Fadenspei­chertrommel, auf welche der über Fadenleitorgane zuge­führte und abgeführte Faden in mehrere Windungen gelegt ist, und mit einem der Fadenspeichertrommel vorgeschalte­ten Knotenwächter und einer einstellbaren Fadenbremse.The invention relates to a thread storage and delivery device for textile machines, in particular knitting machines, with a housing with a drivable thread storage drum, on which the thread fed and removed thread is placed in several turns, and with a knot guard connected upstream of the thread storage drum and an adjustable thread brake.

Sogenannte Fournisseure der vorstehend genannten Art sind in mannigfacher Ausführungsform bekannt. Diesen Vorrich­tungen wird der Faden über Fadenleitösen zugeleitet, an denen bereits eine Fadenumlenkung erfolgt. Als am Vorrich­tungsgehäuse angeordnete Fadenbremse ist überwiegend eine einstellbare Tellerbremse vorgesehen. Zusätzlich kann ein Knotenwächter vorgeschaltet sein, wobei überwiegend Kno­tenwächter Verwendung finden, bei welchen der Fadendurch­ laufspalt mindestens einseitig durch ein starres Teil begrenzt ist. Alle diese erwähnten Teile bilden je nach verarbeitetem Fadenmaterial einen mehr oder weniger großen Fadenabrieb, bilden also Faserflaum, der die erwähnten Organe selbst verunreinigen kann oder mit dem Garn in unerwünschter Weise zur Fadenspeichertrommel weitergelei­tet wird, wo sich aus dem Flaum Faserringe ausbilden kön­nen.So-called feeders of the type mentioned above are known in manifold embodiments. The thread is fed to these devices via thread guide eyelets, on which thread deflection already takes place. An adjustable plate brake is predominantly provided as the thread brake arranged on the device housing. In addition, a knot guard can be installed upstream, predominantly knot guards with whom the thread is being used running gap is limited at least on one side by a rigid part. All of these parts, depending on the thread material processed, form a more or less large thread abrasion, i.e. they form fiber fluff, which can contaminate the organs mentioned themselves or is undesirably passed on to the thread storage drum, where fiber rings can form from the fluff.

Der Erfindung liegt die Aufgabe zugrunde, eine Fadenspei­cher- und -liefervorrichtung der eingangs genannten Art so auszubilden, daß sie fadeneinlaufseitig möglichst wenig Organe zur Fadenkontrolle und Fadenführung aufweist und dabei so gestaltet ist, daß eine Flaumbildung weitgehend unterbunden bleibt.The invention has for its object to provide a thread storage and delivery device of the type mentioned in such a way that it has as few organs for thread control and thread guidance on the thread inlet side and is designed so that fluff formation is largely prevented.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Fadenbremse, die am Vorrichtungsgehäuse unmittel­bar nach einem Fadenleitorgan angeordnet ist, mit dem Kno­tenwächter kombiniert ist und diese Kombination aus zwei frei drehbar gelagerten achsparallelen Rollen besteht, von denen eine gegenüber der anderen gegen Bremsfederkraft verstellbar ist, daß der maximale Verstellweg der ver­stellbaren Rolle durch einen einstellbaren Anschlag be­grenzt ist und daß der Faden über die auf einer unbeweg­lichen Achse gelagerte Rolle umgelenkt ist.The object is achieved in that the thread brake, which is arranged on the device housing immediately after a thread guide, is combined with the knot guard and this combination consists of two freely rotatable axially parallel rollers, one of which is adjustable against the other against brake spring force, that the maximum displacement of the adjustable roller is limited by an adjustable stop and that the thread is deflected over the roller mounted on an immovable axis.

Die erfindungsgemäß ausgebildete Fadenspeicher- und -lie­fervorrichtung ist also mit einer Kombination aus einer Fadenbremse und einem Knotenwächter versehen, die durch ihren Aufbau selbst praktisch keinen Fadenabrieb erbringt und deren drehende Rollen die Anlagerung von Faserflaum verhindern. Die Anordnung der Fadenbremsrollen unmittelbar hinter einem Fadenleitorgan, das vorteilhafterweise am Ende eines Fadenführungsrohres sein kann, ergibt den Vor­teil, daß dieses üblicherweise als starre Fadenleitöse ausgebildete Fadenleitorgan von seiner Fadenleitfunktion weitgehend entbunden ist, wodurch an ihm sich ebenfalls kaum Flaum bilden kann. Die auf einer unbeweglichen Achse gelagerte Rolle der kombinierten Brems- und Fadenwächter­einrichtung bildet ein fadenschonendes Umlenkorgan, das auch die Fadenspannungskräfte, die Änderungsspitzen auf­weisen können, aufnimmt, so daß Fadenspannungsänderungen die Wirkung der Fadenbremse nicht beeinflussen können.The thread storage and delivery device designed according to the invention is therefore provided with a combination of a thread brake and a knot monitor, which itself produces practically no thread abrasion and whose rotating rollers prevent the accumulation of fiber fluff. The arrangement of the thread brake rollers immediately behind a thread guide element, which can advantageously be at the end of a thread guide tube, has the advantage that this thread guide element, which is usually designed as a rigid thread guide eyelet, is largely released from its thread guide function, so that hardly any fluff can form on it. The roller of the combined brake and thread monitor device, which is mounted on an immovable axis, forms a thread-protecting deflection element which also absorbs the thread tension forces, which may have change peaks, so that changes in thread tension cannot influence the effect of the thread brake.

Die erfindungsgemäß ausgebildete Fadenspeicher- und -lie­fervorrichtung erleichtert auch die Bedienung, insbeson­dere wenn die Rollen der kombinierten Brems- und Knoten­wächtereinrichtung fliegend gelagert sind, so daß ein Faden, der durch das Fadenleitrohr bis zu den Rollen mit­tels Luft vorgeschossen wird, sich seitlich zwischen die beiden Rollen einschieben läßt.The thread storage and delivery device designed according to the invention also facilitates operation, in particular if the rollers of the combined brake and knot guard device are overhung, so that a thread that is advanced through the thread guide tube to the rollers by means of air is laterally between the two Rolls in.

Vorteilhafterweise kann die verstellbare Rolle der kom­binierten Brems- und Knotenwächtereinrichtung am freien Ende eines im Vorrichtungsgehäuse angeordneten Schwenk­armes gelagert sein, an welchem die in ihrer Kraftwirkung einstellbare und ebenfalls im Gehäuse anordenbare Feder angreift und auf welchen auch der ebenfalls im Vorrich­tungsgehäuse angeordnete verstellbare Anschlag einwirkt. Die Bremskraft und der maximale Durchlaßspalt zwischen den beiden Walzen können unabhängig voneinander verändert wer­den. Hierzu können vorteilhafterweise im Vorrichtungs­gehäuse zwei gesonderte Stellschrauben vorgesehen sein, wobei zweckmäßig der Ansatzpunkt der Bremsfeder und die Anschlagstelle mit unterschiedlichem Abstand vom Drehpunkt des Schwenkarmes angeordnet werden. Die Bremsfeder läßt sich hier an einer Stelle ansetzen, die ein günstiges Drehmoment am Schwenkhebel ergibt.Advantageously, the adjustable roller of the combined brake and knot guard device can be mounted at the free end of a swivel arm arranged in the device housing, on which the spring, which is adjustable in its force effect and can also be arranged in the housing, acts and on which also acts the adjustable stop arranged in the device housing. The braking force and the maximum passage gap between the two rollers can be changed independently. For this purpose, two separate set screws can advantageously be provided in the device housing, the starting point of the brake spring and the stop point expediently having a different distance from the fulcrum the swivel arm can be arranged. The brake spring can be set here at a point that gives a favorable torque on the swivel lever.

Von der kombinierten Brems- und Fadenwächtereinrichtung kann der Faden radial und tangential der Fadenspeicher­trommel zugeführt werden. Die zwischen der Fadenbremse und der Fadenspeichertrommel üblicherweise angeordnete Faden­fühleranordnung mit einem auf dem laufenden Faden auflie­genden Tasthebel ist nur ein unwesentlicher Flaumverur­sacher. Durch das Fadenleitrohr zugeführter Flaum wird an den Rollen der kombinierten Brems- und Knotenwächterein­richtung praktisch vollständig vom Faden abgehoben. Der Fadenspeichertrommel wird daher überwiegend flaumfreier Faden zugeleitet. Neben der Lösung der gestellten Aufgabe werden durch die kombinierte Brems- und Knotenwächterein­richtung Organe geschaffen, die bisher an Fournisseuren verwendete Bremsvorrichtungen bezüglich der Gleichmäßig­keit der Bremskraft überbieten und auch gegenüber bisher vorgeschalteten Knotenwächtern, die eine zusätzliche Flaumbildungsstelle bildeten, Verbesserungen erbringen.The thread can be fed radially and tangentially to the thread storage drum from the combined brake and thread monitor device. The thread sensor arrangement usually arranged between the thread brake and the thread storage drum with a feeler lever resting on the running thread is only an insignificant cause of fluff. Fluff fed through the thread guide tube is practically completely lifted off the thread on the rollers of the combined brake and knot monitor device. The thread storage drum is therefore fed predominantly fluff-free thread. In addition to solving the problem, the combined brake and knot guard device creates organs that outperform braking devices previously used by suppliers with regard to the uniformity of the braking force and also bring improvements over previously upstream knot guards, which formed an additional fluff formation point.

Nachfolgend wird ein Ausführungsbeispiel einer erfindungs­gemäß ausgebildeten Fadenspeicher- und -liefervorrichtung anhand der beiliegenden Zeichnung näher erläutert.An exemplary embodiment of a thread storage and delivery device designed according to the invention is explained in more detail below with reference to the accompanying drawing.

Im einzelnen zeigen:

  • Fig. 1 eine Gesamtseitenansicht der Fadenspeicher- und -liefervorrichtung, am vorderen Ende teilweise im Schnitt;
  • Fig. 2 das vordere Ende der Vorrichtung in gegen­über Fig. 1 vergrößertem Maßstab und in einer normalen Betriebsstellung;
  • Fig. 3 eine der Fig. 2 entsprechende Darstellung beim Einlaufen eines Fadenknotens in die kombinierte Brems- und Knotenwächter­einrichtung;
  • Fig. 4 eine Draufsicht auf den aus Fig. 2 und 3 ersichtlichen vorderen Endbereich der Faden­speicher- und -liefervorrichtung.
In detail show:
  • Figure 1 is an overall side view of the thread storage and delivery device, partially in section at the front end.
  • FIG. 2 shows the front end of the device on an enlarged scale compared to FIG. 1 and in a normal operating position;
  • 3 shows a representation corresponding to FIG. 2 when a thread knot enters the combined brake and knot monitor device;
  • Fig. 4 is a plan view of the front end portion of the thread storage and delivery device shown in Figs. 2 and 3.

Fig. 1 zeigt ein längliches, in nicht näher dargestellter Weise als Hohlkörper ausgebildetes Vorrichtungsgehäuse 10 der Fadenspeicher- und -liefervorrichtung, das in der Nähe seines einen Endes eine Ausnehmung 11 aufweist, in welche eine Montageschiene 12 einer Textilmaschine eingreift. Das Vorrichtungsgehäuse 10 ist mittels einer Spannschraube 13 auf der Montageschiene 12 festgespannt. Auf der Unterseite des Vorrichtungsgehäuses 10 ist eine Fadenspeichertrommel 14 angeordnet, die fest mit einer nicht dargestellten Welle verbunden ist, die vertikal durch das Vorrichtungs­gehäuse 10 hindurchgeführt und im Vorrichtungsgehäuse ge­lagert ist. Auf dem über die Oberseite des Vorrichtungs­gehäuses 10 überstehenden Wellenteil sind zwei Riemen­scheiben 15 und 16 gelagert, die in bekannter Weise mit­tels einer zwischen den beiden Riemenscheiben 15 und 16 angeordneten axialverstellbaren Kupplungsscheibe 17 wahl­weise mit der Welle und damit mit der Fadenspeichertrommel 14 koppelbar sind.1 shows an elongated device housing 10 of the thread storage and delivery device, which is designed as a hollow body in a manner not shown, and which has a recess 11 in the vicinity of its one end, into which a mounting rail 12 of a textile machine engages. The device housing 10 is clamped on the mounting rail 12 by means of a clamping screw 13. A thread storage drum 14 is arranged on the underside of the device housing 10 and is fixedly connected to a shaft, not shown, which is guided vertically through the device housing 10 and is mounted in the device housing. On the shaft part projecting above the upper side of the device housing 10, two pulleys 15 and 16 are mounted, which can be coupled in a known manner by means of an axially adjustable coupling disk 17 arranged between the two pulleys 15 and 16, optionally with the shaft and thus with the thread storage drum 14.

Auf der Unterseite des Vorrichtungsgehäuses 10 sind in Fadendurchlaufrichtung hinter der Fadenspeichertrommel 14 hintereinander zwei Fadenleitbügel 18 und 19 angeordnet, über welche der tangential von der Fadenspeichertrommel 14 abgeführte Faden 20 geleitet wird und zwischen welchen auf dem Faden ein Fühler in Form eines im Vorrichtungsgehäuse 10 gelagerten Schwenkhebels 34 aufliegt, der zu einer be­kannten Fadenüberwachungseinrichtung gehört. Wenn der Schwenkhebel 34 bei fehlendem Faden 20 aus seiner in Fig. 1 dargestellten Stellung abfällt, wird ein Schalter des Steuerteils der Vorrichtung betätigt, über welchen die Textilmaschine abgeschaltet wird.On the underside of the device housing 10, two thread guide brackets 18 and 19 are arranged one behind the other in the direction of thread passage behind the thread storage drum 14, via which the thread 20 discharged tangentially from the thread storage drum 14 is guided and between which a sensor in the form of a swivel lever mounted in the device housing 10 is guided on the thread 34 rests, which belongs to a known thread monitoring device. If the swivel lever 34 falls out of its position shown in FIG. 1 with the thread 20 missing, a switch of the control part of the device is actuated, via which the textile machine is switched off.

In Fadendurchlaufrichtung vor der Fadenspeichertrommel 14 ist im freien Endbereich des Vorrichtungsgehäuses 10 eine kombinierte Fadenbrems- und Knotenwächtereinrichtung 21 angeordnet, die nachfolgend in Verbindung mit den Fig. 2 bis 4 noch näher erläutert wird. Die Einrichtung 21 befin­det sich auf der Unterseite des Vorrichtungsgehäuses 10. Ihr wird der Faden durch eine unmittelbar vorgesetzte Fadenleitöse 22 zugeleitet, die am Ende eines vertikalen Gehäusedurchlaßkanales angeordnet ist, der mindestens abschnittsweise durch eine Steckhülse (Fig. 2) gebildet wird, in welche das Ende eines Fadenleitrohres 24 ein­steckbar ist.In the direction of thread travel in front of the thread storage drum 14, a combined thread brake and knot monitor device 21 is arranged in the free end region of the device housing 10, which is explained in more detail below in connection with FIGS. 2 to 4. The device 21 is located on the underside of the device housing 10. The thread is fed through a thread guide eyelet 22 directly in front, which is arranged at the end of a vertical housing passage channel, which is formed at least in sections by a plug-in sleeve (FIG. 2) into which the End of a thread guide tube 24 can be inserted.

Die kombinierte Fadenbrems- und Knotenwächtereinrichtung weist zwei miteinander zusammenwirkende, achsparallele zylindrische Rollen 25 und 26 oder Walzen mit glatter Oberfläche auf, die jeweils auf einem Achszapfen 27 oder 28 fliegend und frei drehbar gelagert sind. Der Achszapfen 27 für die eine Rolle 25 ist am Vorrichtungsgehäuse 10 befestigt. Der Achszapfen 28 für die andere Rolle 26 ist am freien Ende eines gekröpften Hebels 29 befestigt, der um eine Achse 30 im Vorrichtungsgehäuse 10 verschwenkbar ist. Die am Schwenkhebel 29 gelagerte Rolle 26 ist in der Achsrichtung der vorgesetzten Fadenleitöse 22 gesehen mit einem größeren Achsabstand von der Fadenleitöse 22 als die starr gelagerte andere Rolle 25 angeordnet, wobei der Umfang der starr gelagerten Rolle 25 mindestens annähernd bis zur Längsachse der Fadenleitöse 22 vorsteht, so daß der durch das Fadenleitrohr 24 ankommende Faden 20 prak­tisch ohne Berührung der Fadenleitöse 22 auf die Rolle 25 aufläuft, die gleichzeitig eine Umlenkrolle für den Faden bildet.The combined thread brake and knot monitor device has two interacting, axially parallel cylindrical rollers 25 and 26 or rollers with a smooth surface, each of which is floating and freely rotatable on a journal 27 or 28. The journal 27 for the one roller 25 is attached to the device housing 10. The journal 28 for the other roller 26 is attached to the free end of a cranked lever 29 which is pivotable about an axis 30 in the device housing 10. The roller 26 mounted on the swivel lever 29 is, viewed in the axial direction of the thread guide eye 22 in front, arranged at a greater center distance from the thread guide eye 22 than the rigidly mounted other roller 25, the circumference of the rigidly mounted roller 25 projecting at least approximately to the longitudinal axis of the thread guide eye 22 so that the thread 20 arriving through the thread guide tube 24 runs onto the roller 25 practically without touching the thread guide eyelet 22, which at the same time forms a deflection roller for the thread.

Auf der Unterseite des Vorrichtungsgehäuses 10 sind neben­einander zwei Gewindebohrungen ausgebildet, die mit je einer Stellschraube 31 oder 32 besetzt sind. Beide Gewin­debohrungen reichen bis in den Bereich des in Fig. 2 hori­zontal verlaufenden Abschnittes 29.1 des in einem Schlitz des Vorrichtungsgehäuses 10 untergebrachten gekröpften Schwenkhebels 29. In der einen Bohrung ist eine Schrauben­druckfeder 33 angeordnet, die einerseits am Abschnitt 29.1 des Schwenkhebels 29 und andererseits an der Stellschraube 31 abgestützt ist. Die Stellschraube 32 in der anderen Gewindebohrung bildet mit ihrem inneren Ende 32.1 einen die Schwenkbewegung des gekröpften Schwenkhebels 29 be­grenzenden Anschlag. Mit der Stellschraube 31 kann die Spannkraft der Schraubendruckfeder 33 eingestellt werden, die auf den Schwenkhebel 29 einwirkt und dadurch die Bremskraft bestimmt, die auf den zwischen den beiden Rol­len 25 und 26 hindurchlaufenden Faden 20 ausgeübt wird. Durch die andere Stellschraube 32 mit ihrem Anschlagende 32.1 wird der aus Fig. 3 ersichtliche Maximalspalt 34 be­stimmt, der zwischen den beiden Rollen 25 und 26 entstehen kann, wenn ein im Faden 20 enthaltener Knoten 35 die bei­den Rollen 25 und 26 auseinanderzwingt. Ist der Knoten 35 stärker als die Breite des eingestellten Spaltes 34, kann er die beiden Rollen 25 und 26 nicht passieren. Die beiden Rollen 25 und 26 bilden hier also einen Knotenwächter.On the underside of the device housing 10, two threaded bores are formed side by side, which are each occupied by a set screw 31 or 32. Both threaded holes extend into the area of the horizontally extending section 29.1 in FIG. 2 of the cranked pivot lever 29 accommodated in a slot of the device housing 10. In one bore a helical compression spring 33 is arranged, which on the one hand on the section 29.1 of the pivot lever 29 and on the other hand on the Set screw 31 is supported. With its inner end 32.1, the adjusting screw 32 in the other threaded bore forms a stop that limits the pivoting movement of the cranked pivoting lever 29. With the adjusting screw 31, the tension force of the helical compression spring 33 can be adjusted, which acts on the pivot lever 29 and thereby determines the braking force which is exerted on the thread 20 passing between the two rollers 25 and 26. The other set screw 32 with its stop end 32.1 determines the maximum gap 34 shown in FIG. 3, which is formed between the two rollers 25 and 26 can, if a knot 35 contained in the thread 20 forces the two rollers 25 and 26 apart. If the node 35 is thicker than the width of the set gap 34, it cannot pass the two rollers 25 and 26. The two rollers 25 and 26 form a knot guard here.

Zwischen der kombinierten Fadenbrems- und Knotenwächter­einrichtung 21 und der Fadenspeichertrommel 14 ist in bekannter Weise ein Fadenbruchwächter angeordnet, der einen auf dem zur Fadenspeichertrommel 14 laufenden Faden 20 aufliegenden Tastbügel 36 aufweist. Je nach an der Stellschraube 31 eingestellter Bremskraft kann der Faden 20 am Tasthebel 36 gemäß Fig. 1 eine Umlenkung oder gemäß Fig. 2 und 3 keine Umlenkung erfahren. Der Faden 20 durch­läuft vor der Fadenspeichertrommel 14 noch einen Faden­leitbügel 37.Between the combined thread brake and knot monitor device 21 and the thread storage drum 14, a thread break monitor is arranged in a known manner, which has a feeler 36 resting on the thread 20 running to the thread storage drum 14. Depending on the braking force set on the adjusting screw 31, the thread 20 on the feeler lever 36 according to FIG. 1 can undergo a deflection or according to FIGS. 2 and 3 no deflection. The thread 20 passes through a thread guide bracket 37 in front of the thread storage drum 14.

Claims (7)

1. Fadenspeicher- und -liefervorrichtung für Textilmaschi­nen, insbesondere Strickmaschinen, mit einem Gehäuse mit einer antreibbaren Fadenspeichertrommel, auf welche der über Fadenleitorgane zugeführte und abgeführte Faden in mehrere Windungen gelegt ist, und mit einem der Fadenspeichertrommel vorgeschalteten Knotenwächter und einer einstellbaren Fadenbremse, dadurch gekenn­zeichnet, daß die Fadenbremse, die am Vorrichtungs­gehäuse (10) unmittelbar nach einem Fadenleitorgan (22) angeordnet ist, mit dem Knotenwächter (Einrichtung (21) kombiniert ist und diese Kombination aus zwei frei drehbar gelagerten achsparallelen Rollen (25, 26) be­steht, von denen eine gegenüber der anderen gegen Bremsfederkraft verstellbar ist, daß der maximale Ver­stellweg der verstellbaren Rolle (26) durch einen ein­stellbaren Anschlag (32.1) begrenzt ist und daß der Faden (20) über die auf einer unbeweglichen Achse (27) gelagerte Rolle (25) umgelenkt ist.1. Thread storage and delivery device for textile machines, in particular knitting machines, with a housing with a drivable thread storage drum on which the thread fed and removed thread is laid in several turns, and with a knot guard connected upstream of the thread storage drum and an adjustable thread brake, characterized that the thread brake, which is arranged on the device housing (10) immediately after a thread guide member (22), is combined with the knot monitor (device (21)) and this combination consists of two freely rotatable axially parallel rollers (25, 26), of which one is adjustable relative to the other against brake spring force, that the maximum displacement of the adjustable roller (26) is limited by an adjustable stop (32.1) and that the thread (20) is deflected via the roller (25) mounted on an immovable axis (27) is. 2. Fadenspeicher- und -liefervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die verstellbare Rolle (26) am freien Ende eines im Vorrichtungsgehäuse (10) ange­ordneten Schwenkarmes (29) gelagert ist, an welchem in der einen Schwenkrichtung eine im Vorrichtungsgehäuse (10) angeordnete, in ihrer Kraftwirkung einstellbare Feder (33) angreift und ein Anschlag (32.1) mit ver­änderlichem Abstand von seiner durch die Rollenanlage bestimmten einen Endstellung im Vorrichtungsgehäuse (10) gelagert ist.2. Thread storage and delivery device according to claim 1, characterized in that the adjustable roller (26) is mounted on the free end of a swivel arm (29) arranged in the device housing (10), on which in one swivel direction one in the device housing (10) arranged spring (33) which is adjustable in its force effect and a stop (32.1) with a variable distance from its end position determined by the roller system is mounted in the device housing (10). 3. Fadenspeicher- und -liefervorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Bremsfederkraft (33) und der Abstand des Anschlages (32.1) an zwei im Vorrichtungsgehäuse (10) gelagerten Stellschrauben (31, 32) unabhängig voneinander einstellbar sind.3. thread storage and delivery device according to claim 1 and 2, characterized in that the brake spring force (33) and the distance of the stop (32.1) on two in the device housing (10) mounted adjusting screws (31, 32) are independently adjustable. 4. Fadenspeicher- und -liefervorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Ansatzpunkt der Bremsfeder (33) und die Stelle des Anschlages (32.1) mit unterschiedlichem Abstand vom Drehpunkt (30) des Schwenkarmes (29) angeordnet sind.4. thread storage and delivery device according to claim 2 or 3, characterized in that the starting point of the brake spring (33) and the location of the stop (32.1) are arranged at different distances from the pivot point (30) of the swivel arm (29). 5. Fadenspeicher- und -liefervorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß beide achsparallelen Rollen (25, 26) eine ungestufte zylin­drische Mantelfläche aufweisen und fliegend gelagert sind.5. Thread storage and delivery device according to one of claims 1 to 4, characterized in that both axially parallel rollers (25, 26) have an unstaged cylindrical outer surface and are overhung. 6. Fadenspeicher- und -liefervorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das unmittelbar vor der kombinierten Fadenbrems- und Knotenwächtereinrichtung (21) angeordnete Fadenleit­organ (22) eine am Ende einer zur Aufnahme des Endes eines Fadenleitrohres (24) dienenden Steckhülse (23) angeordnete Fadenleitöse (22) ist.6. Thread storage and delivery device according to one of claims 1 to 5, characterized in that the thread guide element (22) arranged directly in front of the combined thread brake and knot monitor device (21) is used at the end of a for receiving the end of a thread guide tube (24) Insert sleeve (23) arranged thread guide eyelet (22). 7. Fadenspeicher- und -liefervorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß in der Achsrichtung der Fadenleitöse (22) gesehen die beiden Lagerzapfen (27, 28) für die Rollen (25, 26) einen unterschiedlichen Abstand von der Fadenleitöse (22) haben.7. thread storage and delivery device according to claim 6, characterized in that seen in the axial direction of the thread guide eyelet (22), the two bearing pins (27, 28) for the rollers (25, 26) have a different distance from the thread guide eyelet (22) .
EP88114653A 1987-10-07 1988-09-08 Yarn storage and delivery device for textile machines, in particular knitting machines Expired - Lifetime EP0310820B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3733797 1987-10-07
DE3733797A DE3733797C1 (en) 1987-10-07 1987-10-07 Thread storage and delivery device for textile machines, in particular knitting machines

Publications (3)

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EP0310820A2 true EP0310820A2 (en) 1989-04-12
EP0310820A3 EP0310820A3 (en) 1989-05-10
EP0310820B1 EP0310820B1 (en) 1991-12-11

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ID=6337741

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EP88114653A Expired - Lifetime EP0310820B1 (en) 1987-10-07 1988-09-08 Yarn storage and delivery device for textile machines, in particular knitting machines

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US (1) US4898337A (en)
EP (1) EP0310820B1 (en)
JP (1) JPH01221553A (en)
DD (1) DD282894A5 (en)
DE (1) DE3733797C1 (en)
ES (1) ES2028966T3 (en)
SU (1) SU1738091A3 (en)
TR (1) TR23510A (en)

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DE3924883A1 (en) * 1989-07-27 1991-01-31 Horst Paepke Yarn clearer for textile machinery - has creel to aid in detection of knots

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Publication number Priority date Publication date Assignee Title
EP0578771B1 (en) * 1991-04-05 1999-12-29 Metcal, Inc. Instrument for cutting, coagulating and ablating tissue
ITBS20020108A1 (en) * 2002-11-25 2004-05-26 Sangiacomo Spa CONTROL SYSTEM OF THE PRESENCE OF THE THREADS SUPPLIED TO THE NEEDLES
CN111379069B (en) * 2020-03-24 2021-06-22 海宁市万路针织有限公司 Yarn guide drum device capable of winding yarn breakage

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GB857424A (en) * 1958-02-08 1960-12-29 Burton Engineering Company Bri Device for detecting and indicating knots in yarns, threads and the like
GB1069166A (en) * 1964-10-21 1967-05-17 Flight Refueling Ltd Improvements in and relating to yarn clearing devices
DE3136644A1 (en) * 1981-09-16 1983-03-31 Memminger Gmbh, 7290 Freudenstadt Adjustable knot catcher for textile machines, especially knitting machines
DE3431410A1 (en) * 1983-09-14 1985-03-28 Maschinenfabrik Benninger AG, Uzwil THREAD BRAKE DEVICE

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US2362920A (en) * 1943-01-08 1944-11-14 Harry W Moore Unreeling device
US3490710A (en) * 1967-07-31 1970-01-20 Fouquet Werk Frauz & Planck Automatic thread delivery device for textile machines
DE3515104C1 (en) * 1985-04-26 1986-10-02 SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH, 7470 Albstadt Device for the compulsory delivery of elastomer threads to textile machines
ES8704217A1 (en) * 1986-06-23 1987-04-01 Jumberca Sa A yarn feed device for textile machines.

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Publication number Priority date Publication date Assignee Title
GB857424A (en) * 1958-02-08 1960-12-29 Burton Engineering Company Bri Device for detecting and indicating knots in yarns, threads and the like
GB1069166A (en) * 1964-10-21 1967-05-17 Flight Refueling Ltd Improvements in and relating to yarn clearing devices
DE3136644A1 (en) * 1981-09-16 1983-03-31 Memminger Gmbh, 7290 Freudenstadt Adjustable knot catcher for textile machines, especially knitting machines
DE3431410A1 (en) * 1983-09-14 1985-03-28 Maschinenfabrik Benninger AG, Uzwil THREAD BRAKE DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924883A1 (en) * 1989-07-27 1991-01-31 Horst Paepke Yarn clearer for textile machinery - has creel to aid in detection of knots

Also Published As

Publication number Publication date
TR23510A (en) 1990-02-14
ES2028966T3 (en) 1992-07-16
DD282894A5 (en) 1990-09-26
EP0310820B1 (en) 1991-12-11
JPH0223620B2 (en) 1990-05-24
DE3733797C1 (en) 1989-04-06
SU1738091A3 (en) 1992-05-30
JPH01221553A (en) 1989-09-05
US4898337A (en) 1990-02-06
EP0310820A3 (en) 1989-05-10

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