EP0258879A2 - Warping device and disc brake for threads - Google Patents

Warping device and disc brake for threads Download PDF

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Publication number
EP0258879A2
EP0258879A2 EP87112780A EP87112780A EP0258879A2 EP 0258879 A2 EP0258879 A2 EP 0258879A2 EP 87112780 A EP87112780 A EP 87112780A EP 87112780 A EP87112780 A EP 87112780A EP 0258879 A2 EP0258879 A2 EP 0258879A2
Authority
EP
European Patent Office
Prior art keywords
yarn
disc
warping
brake
thread
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.)
Withdrawn
Application number
EP87112780A
Other languages
German (de)
French (fr)
Other versions
EP0258879A3 (en
Inventor
Jürgen Beitz
Karl-Heinz Erren
Günter Möbius
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.)
Norddeutsche Faserwerke GmbH
Original Assignee
Norddeutsche Faserwerke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norddeutsche Faserwerke GmbH filed Critical Norddeutsche Faserwerke GmbH
Publication of EP0258879A2 publication Critical patent/EP0258879A2/en
Publication of EP0258879A3 publication Critical patent/EP0258879A3/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • D02H13/22—Tensioning devices
    • D02H13/24—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
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/225—Tension discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/11—Actuating means linear pneumatic, e.g. inflatable elements
    • 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

  • each thread is held by means of a brake as it exits the warping gate in order to apply it to the warping beam with a uniform pull.
  • Braking of this type is undesirable in fast-running warping systems, since the resistors on the guides of the thread to the warping beam already give the thread sufficient tension.
  • a brake would also cause the threads to become too tight in these fast-running warping systems.
  • it is necessary to brake the fast-running thread to avoid re-shooting the threads when the warping machine z. B. must suddenly be stopped or braked because of a yarn error.
  • clamping brakes for each thread have therefore been provided, which are actuated mechanically, ie switched on when the warping arm rotation is switched off, brought into the braking position, and released again when or after starting the warping tree.
  • the operating mechanism is very slow and difficult to use due to the large number of thread brakes on the warping system.
  • a plate thread brake which can be switched on or off by means of compressed gas, usually compressed air against gravity or spring force, is used as the clamping brake for each thread of a warping system.
  • compressed gas usually compressed air against gravity or spring force
  • a plate thread brake which particularly meets the requirements outlined above, consists of a housing that supports the saucer and contains the gas supply to a system that can be expanded by gas pressure, and a body that is axially movable in the housing and that is non-positively connected to the system that can be expanded by gas pressure, and has a mandrel supporting the top plate. If the gas pressure inside the expandable system is increased, the mandrel carrying the upper plate moves upwards against the force of gravity due to the expansion of the expandable system, thereby lifting the upper plate from the lower plate and thus releasing the clamping brake.
  • the strength of the braking effect is determined by the surface condition of the upper and lower plates, but especially by the pressure of the upper plate on the saucer. This pressure can e.g. B. generated by springs.
  • the pressure can be varied in an easily reproducible manner by means of top plates of different weights or by additional weights.
  • the times for the plate thread brake to respond can be reduced by springs which counteract the expansion of the system. Springs also enable a different switching of the plate brake, in which the top plate is lifted off the bottom plate without compressed gas and the pressure of the gas lowers the top plate onto the bottom plate. As a result, a particularly rapid application of the braking effect is achieved when the skiving tree rotation is turned off.
  • a metal can with an elastic lid - similar to the cans used in aneroid barometers, but without an internal compression spring - and with compressed air connection or two plastic foils glued together at the edges with a compressed gas supply between the two foils.
  • a system consisting of cylinder and piston is preferred, wherein the compressed gas can be routed both through the piston and directly into the cylinder.
  • the piston is firmly connected to the housing while the cylinder is on or in the movable body.
  • the thread should not be decelerated by the brake when it is open.
  • Figure 1 shows the plate thread brake according to the invention in plan view with the top plate removed.
  • the saucer 11 is held by the outer ring 2 on the housing 1.
  • the thread 3 runs through the slot of the mandrel 4.
  • Figure 2 shows a vertical section through the thread brake.
  • the piston 7 with mandrel 4 is located in the housing 1 with gas supply 5 and cylinder 6. If compressed gas is fed into cylinder 6 via the compressed gas connection 5, the piston 7 with mandrel 4 moves upwards; the upper plate 12 sits on the shoulder of the mandrel and is lifted off the lower plate 11.
  • Springs, e.g. B. compression springs between the housing 1 and piston 7 can be provided to accelerate the lowering of the mandrel 4 with the upper plate 12 after switching off the compressed gas supply and opening an outflow valve.
  • FIGS. 3 and 4 show a plate thread brake which, as shown in FIG. 4, is opened without compressed gas and closes by gas pressure (see FIG. 3).
  • the cylinder 6 with compressed gas supply 5 is fixed to the housing 1, the piston 7 via the lower centering plate 8 ⁇ , the connector 9 and the upper centering plate 8 with the Mandrel 4 connected, which carries the upper plate 12 on his shoulder.
  • the opening of the brake is effected by the springs 10 between the housing 1 and the upper centering plate 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Warping, Beaming, Or Leasing (AREA)
  • Braking Arrangements (AREA)

Abstract

1. Warp system and yarn disc brake. 2.1 Conventionally, during warping, each yarn is held by means of a brake in the run-off from the creel, in order to attach it to the beam with uniform tension. On high-speed warping systems, such braking is undesirable, since the resistances on the yarn guides to the beam already give the yarn sufficient tension. 2.2 It is proposed to provide as clamping brakes for each yarn of a warping system a yarn disc brake which can be cut in or cut out counter to gravity or spring force by means of compressed gas. By the opening of a valve, all the yarn disc brakes can be opened or closed simultaneously during the start or termination of the beam rotation. 2.3 A corresponding yarn disc brake consists of a housing carrying the lower disc and containing the gas supply to a system expandable by gas pressure, and of a body which is axially moveable in the housing and is connected non-positively to the system expandable by gas pressure and which has a spindle carrying the upper disc. The intensity of the braking action on the yarn running between the upper disc and lower disc is determined, for example, by the pressure of the upper disc on the lower disc. …<IMAGE>…

Description

Üblicherweise wird während des Schärens jeder Faden beim Ablauf aus dem Schärgatter mittels einer Bremse gehalten, um ihn mit gleichförmigem Zug auf den Schärbaum aufzubringen. Bei schnell laufenden Schäranlagen ist eine derartige Bremsung unerwünscht, da die Widerstände an den Führungen des Fadens zum Schärbaum dem Faden bereits ausreichende Spannung erteilen. Eine Bremse würde darüber hinaus bei diesen schnell laufenden Schäranlagen zu einer zu großen Spannung der Fäden führen. Andererseits ist es aber notwendig, den schnell laufenden Faden zu bremsen, um ein Nachschießen der Fäden zu vermeiden, wenn die Schärmaschine z. B. wegen eines Garnfehlers schlagartig abgestellt bzw. abgebremst werden muß. Man hat daher bei derartigen schnell laufenden Schäranlagen Klemmbremsen für jeden Faden vorgesehen, die mechanisch betätigt, d. h. bei Abstellen der Schärbaumdrehung eingeschaltet, in Bremsstellung gebracht, und beim bzw. nach dem Anfahren des Schärbaumes wieder gelöst werden. Die Bedienungsmechanik ist aber sehr träge und wegen der großen Zahl von Fadenbremsen an der Schäranlage nur schwer zu handhaben. Insbesondere gelingt es bei Schäranlagen mit einer großen Zahl von Fäden nicht, sämtliche Fadenbremsen des Gatters beim Abstellen der Schärbaumdrehung so schnell einzuschalten, daß Fadennachläufe mit Sicherheit vermieden werden, und alle Bremsen beim Anfahren der Schärmaschine vor Erreichen der hohen Geschwindigkeiten zu lösen, um einen zu starken Zug auf die Fäden zu vermeiden.Usually, during the warping, each thread is held by means of a brake as it exits the warping gate in order to apply it to the warping beam with a uniform pull. Braking of this type is undesirable in fast-running warping systems, since the resistors on the guides of the thread to the warping beam already give the thread sufficient tension. A brake would also cause the threads to become too tight in these fast-running warping systems. On the other hand, it is necessary to brake the fast-running thread to avoid re-shooting the threads when the warping machine z. B. must suddenly be stopped or braked because of a yarn error. In such fast-running warping systems, clamping brakes for each thread have therefore been provided, which are actuated mechanically, ie switched on when the warping arm rotation is switched off, brought into the braking position, and released again when or after starting the warping tree. The operating mechanism is very slow and difficult to use due to the large number of thread brakes on the warping system. In particular, in warping systems with a large number of threads, it is not possible to switch on all the thread brakes of the gate when the warping twist is turned off so quickly that thread follow-up is avoided with certainty, and to release all brakes when the warping machine starts up before the high speeds are reached in order to get one to avoid strong tension on the threads.

Gemäß vorliegender Erfindung werden diese Schwierigkeiten dadurch behoben, daß als Klemmbremse für jeden Faden einer Schäranlage eine mittels Druckgas, meist Druckluft gegen Schwerkraft oder Federkraft ein- oder ausschaltbare Tellerfadenbremse verwendet wird. Durch Öffnen eines Ventils lassen sich in kürzester Zeit alle Tellerfadenbremsen der Schäranlage schließen oder öffnen; die Druckluftzuleitungen sind einfach zu verlegen.According to the present invention, these difficulties are eliminated in that a plate thread brake which can be switched on or off by means of compressed gas, usually compressed air against gravity or spring force, is used as the clamping brake for each thread of a warping system. By opening a valve, all disc thread brakes of the warping system can be closed or opened in the shortest possible time; the compressed air supply lines are easy to lay.

Eine Tellerfadenbremse, die insbesondere den oben geschilderten Anforderungen entspricht, besteht aus einem Gehäuse, das den Unterteller trägt und die Gaszuführung zu einem durch Gasdruck expandierbaren System enthält, sowie einem im Gehäuse axial beweglichen Körper, der mit dem durch Gasdruck expandierbaren System kraftschlüssig verbunden ist und einen den Oberteller tragenden Dorn aufweist. Wird der Gasdruck im Innern des expandierbaren Systems erhöht, bewegt sich der den Oberteller tragende Dorn durch die Ausdehnung des expandierbaren Systems gegen die Schwerkraft aufwärts, hebt hierbei den Oberteller vom Unterteller und löst so die Klemmbremse. Die Stärke der Bremswirkung wird von der Oberflächenbeschaffenheit von Ober- und Unterteller, insbesondere aber durch den Druck des Obertellers auf den Unterteller bestimmt. Dieser Druck kann z. B. durch Federn erzeugt werden. Bei der bevorzugten Aufstellung der Tellerfadenbremse, bei der deren Achse senkrecht steht, kann der Druck in leicht reproduzierbarer Weise durch Oberteller verschiedenen Gewichts oder durch Zusatzgewichte variiert werden.A plate thread brake, which particularly meets the requirements outlined above, consists of a housing that supports the saucer and contains the gas supply to a system that can be expanded by gas pressure, and a body that is axially movable in the housing and that is non-positively connected to the system that can be expanded by gas pressure, and has a mandrel supporting the top plate. If the gas pressure inside the expandable system is increased, the mandrel carrying the upper plate moves upwards against the force of gravity due to the expansion of the expandable system, thereby lifting the upper plate from the lower plate and thus releasing the clamping brake. The strength of the braking effect is determined by the surface condition of the upper and lower plates, but especially by the pressure of the upper plate on the saucer. This pressure can e.g. B. generated by springs. In the preferred arrangement of the plate thread brake, in which the axis is perpendicular, the pressure can be varied in an easily reproducible manner by means of top plates of different weights or by additional weights.

Die Zeiten für das Ansprechen der Tellerfadenbremse können durch Federn verringert werden, die der Expansion des Systems entgegenwirken. Federn ermöglichen auch eine andere Schaltung der Tellerbremse, bei der ohne Druckgas der Oberteller vom Unterteller abgehoben ist und durch den Druck des Gases der Oberteller auf den Unterteller abgesenkt wird. Hierdurch wird ein besonders schnelles Einsetzen der Bremswirkung bei der Abstellung der Schärbaumdrehung erreicht.The times for the plate thread brake to respond can be reduced by springs which counteract the expansion of the system. Springs also enable a different switching of the plate brake, in which the top plate is lifted off the bottom plate without compressed gas and the pressure of the gas lowers the top plate onto the bottom plate. As a result, a particularly rapid application of the braking effect is achieved when the skiving tree rotation is turned off.

Als expandierbares System kann z. B. eine Metalldose mit elastischem Deckel - ähnlich den in Aneroidbarometern verwendeten Dosen, jedoch ohne innere Druckfeder - und mit Druckluftanschluß oder zwei an den Rändern zusammengeklebte Kunststoffolien mit einer Druckgaszuführung zwischen beide Folien verwendet werden. Bevorzugt wird jedoch ein aus Zylinder und Kolben bestehendes System, wobei die Druckgasführung sowohl durch den Kolben, als auch direkt in den Zylinder erfolgen kann. Im ersteren Falle wird der Kolben mit dem Gehäuse fest verbunden, während der Zylinder sich an oder in dem beweglichen Körper befindet. Im zweiten Falle ist es zweckmäßig, den Zylinder mit Gaszuführung als Teil des Gehäuses auszubilden und den Kolben in geeigneter Weise mit dem beweglichen Körper zu verbinden.As an expandable system z. B. a metal can with an elastic lid - similar to the cans used in aneroid barometers, but without an internal compression spring - and with compressed air connection or two plastic foils glued together at the edges with a compressed gas supply between the two foils. However, a system consisting of cylinder and piston is preferred, wherein the compressed gas can be routed both through the piston and directly into the cylinder. In the former case, the piston is firmly connected to the housing while the cylinder is on or in the movable body. In the second case, it is expedient to design the gas-fed cylinder as part of the housing and to connect the piston to the movable body in a suitable manner.

Der Faden soll bei geöffneter Bremse von dieser nicht verzögert werden. Hierfür hat es sich als zweckmäßig erwiesen, den Dorn axial zu schlitzen und durch den Schlitz den Faden geradlinig zwischen Unter- und Oberteller zu führen.The thread should not be decelerated by the brake when it is open. For this purpose, it has proven to be expedient to slit the mandrel axially and through the Slit to guide the thread in a straight line between the lower and upper plate.

In den zugehörigen Zeichnungen ist die erfindungsgemäße Tellerbremse beispielhaft dargestellt. Figur 1 zeigt die erfindungsgemäße Tellerfadenbremse in Draufsicht mit abgenommenem Oberteller. Der Unterteller 11 wird durch den äußeren Ring 2 am Gehäuse 1 gehalten. Der Faden 3 läuft durch den Schlitz des Dornes 4.In the accompanying drawings, the disk brake according to the invention is shown as an example. Figure 1 shows the plate thread brake according to the invention in plan view with the top plate removed. The saucer 11 is held by the outer ring 2 on the housing 1. The thread 3 runs through the slot of the mandrel 4.

Figur 2 zeigt einen senkrechten Schnitt durch die Fadenbremse. Im Gehäuse 1 mit Gaszuführung 5 und Zylinder 6 befindet sich der Kolben 7 mit Dorn 4. Wird über den Druckgasanschluß 5 Druckgas in den Zylinder 6 geführt, bewegt sich der Kolben 7 mit Dorn 4 nach oben; der Oberteller 12 sitzt auf der Schulter des Dornes auf und wird vom Unterteller 11 abgehoben.Figure 2 shows a vertical section through the thread brake. The piston 7 with mandrel 4 is located in the housing 1 with gas supply 5 and cylinder 6. If compressed gas is fed into cylinder 6 via the compressed gas connection 5, the piston 7 with mandrel 4 moves upwards; the upper plate 12 sits on the shoulder of the mandrel and is lifted off the lower plate 11.

Federn, z. B. Druckfedern zwischen Gehäuse 1 und Kolben 7 können vorgesehen werden, um die Absenkung des Dornes 4 mit Oberteller 12 nach Abschalten der Druckgaszufuhr und Öffnen eines Ausströmventils zu beschleunigen.Springs, e.g. B. compression springs between the housing 1 and piston 7 can be provided to accelerate the lowering of the mandrel 4 with the upper plate 12 after switching off the compressed gas supply and opening an outflow valve.

Figur 3 und 4 zeigen eine Tellerfadenbremse, die, wie in Figur 4 dargestellt, ohne Druckgas geöffnet ist und durch Gasdruck schließt (s. Fig. 3). Hier ist der Zylinder 6 mit Druckgaszufuhr 5 fest mit dem Gehäuse 1, der Kolben 7 über die untere Zentrierplatte 8ʹ, die Verbinder 9 und die obere Zentrierplatte 8 mit dem Dorn 4 verbunden, der auf seiner Schulter den Oberteller 12 trägt. Das Öffnen der Bremse wird durch die Federn 10 zwischen Gehäuse 1 und oberer Zentrierplatte 8 bewirkt.FIGS. 3 and 4 show a plate thread brake which, as shown in FIG. 4, is opened without compressed gas and closes by gas pressure (see FIG. 3). Here the cylinder 6 with compressed gas supply 5 is fixed to the housing 1, the piston 7 via the lower centering plate 8ʹ, the connector 9 and the upper centering plate 8 with the Mandrel 4 connected, which carries the upper plate 12 on his shoulder. The opening of the brake is effected by the springs 10 between the housing 1 and the upper centering plate 8.

Claims (5)

1. Schäranlage mit gemeinsam ein- und ausschaltbaren Klemmbremsen für jeden Faden, gekennzeichnet durch mittels Druckgas gegen Schwer- oder Federkraft ein- oder ausschaltbare Tellerfadenbremsen.1. warping system with clamping brakes that can be switched on and off for each thread, characterized by plate thread brakes that can be switched on or off by means of compressed gas against gravity or spring force. 2. Tellerfadenbremse, insbesondere für Schäranlagen nach Anspruch 1, gekennzeichnet durch ein mittels Gasdruck expandierbares System (6, 7), dessen Gaszuführung (5) in dem den Unterteller (11) tragenden Gehäuse (1) liegt und das mit einem, einen Oberteller (12) tragenden Dorn (4) aufweisenden, im Gehäuse (1) axial beweglichen Körper (8, 8ʹ, 9) kraftschlüssig verbunden ist.2. Disc thread brake, in particular for warping systems according to claim 1, characterized by a system (6, 7) expandable by means of gas pressure, the gas supply (5) of which is located in the housing (1) carrying the saucer (11) and which has an upper plate ( 12) bearing mandrel (4), in the housing (1) axially movable body (8, 8ʹ, 9) is non-positively connected. 3. Tellerfadenbremse nach Anspruch 2, gekennzeichnet durch der Expansion des Systems (6, 7) entgegenwirkende Federn (10).3. Disc thread brake according to claim 2, characterized by the expansion of the system (6, 7) counteracting springs (10). 4. Tellerfadenbremse nach Anspruch 2 oder 3, gekennzeichnet durch Zylinder (6) und Kolben (7) als durch Gasdruck expandierbares System.4. Disc thread brake according to claim 2 or 3, characterized by cylinder (6) and piston (7) as an expandable system by gas pressure. 5. Tellerfadenbremse nach einem der Ansprüche 2 bis 4, gekennzeichnet durch einen axialen Schlitz in dem den Oberteller (12) tragenden Dorn (4).5. plate thread brake according to one of claims 2 to 4, characterized by an axial slot in the upper plate (12) carrying mandrel (4).
EP87112780A 1986-09-03 1987-09-02 Warping device and disc brake for threads Withdrawn EP0258879A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3629928 1986-09-03
DE19863629928 DE3629928A1 (en) 1986-09-03 1986-09-03 SHARPENING SYSTEM AND DISC THREAD BRAKE

Publications (2)

Publication Number Publication Date
EP0258879A2 true EP0258879A2 (en) 1988-03-09
EP0258879A3 EP0258879A3 (en) 1990-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87112780A Withdrawn EP0258879A3 (en) 1986-09-03 1987-09-02 Warping device and disc brake for threads

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US (1) US4901942A (en)
EP (1) EP0258879A3 (en)
DE (1) DE3629928A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO1999061691A1 (en) * 1998-05-27 1999-12-02 Sucker-Müller-Hacoba Gmbh & Co. Yarn tension device
CN112538689A (en) * 2020-11-30 2021-03-23 常州市宏发纵横新材料科技股份有限公司 Pay-off tightening device for high-performance fiber braiding machine

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DE3734518A1 (en) * 1987-10-13 1989-04-27 Hacoba Textilmaschinen DEVICE FOR START-UP CONTROL OF COILS
DE10345369A1 (en) 2003-09-26 2005-05-12 Sipra Patent Beteiligung Yarn brake and textile machine and yarn feeding device equipped therewith

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999061691A1 (en) * 1998-05-27 1999-12-02 Sucker-Müller-Hacoba Gmbh & Co. Yarn tension device
CN112538689A (en) * 2020-11-30 2021-03-23 常州市宏发纵横新材料科技股份有限公司 Pay-off tightening device for high-performance fiber braiding machine

Also Published As

Publication number Publication date
US4901942A (en) 1990-02-20
DE3629928C2 (en) 1990-02-22
EP0258879A3 (en) 1990-08-29
DE3629928A1 (en) 1988-03-10

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