EP0856071B1 - Device for crimping of synthetic bundles or slivers of yarns - Google Patents

Device for crimping of synthetic bundles or slivers of yarns Download PDF

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Publication number
EP0856071B1
EP0856071B1 EP96934674A EP96934674A EP0856071B1 EP 0856071 B1 EP0856071 B1 EP 0856071B1 EP 96934674 A EP96934674 A EP 96934674A EP 96934674 A EP96934674 A EP 96934674A EP 0856071 B1 EP0856071 B1 EP 0856071B1
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EP
European Patent Office
Prior art keywords
roller
pressure
force
pivot arm
press plate
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Expired - Lifetime
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EP96934674A
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German (de)
French (fr)
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EP0856071A1 (en
Inventor
Carsten VOIGTLÄNDER
Joachim Brenk
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NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH
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NEUMAG Neumuenstersche Maschinen und Anlagenbau GmbH
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/125—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes including means for monitoring or controlling yarn processing

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • DE-PS 2 716 024 is a device for measuring the on a rolling bearing acting radial force by means of elastically deformable members and an electrical Signal generator known. These devices are known as “force measuring bearings” available (brochure “Force transducers for FMS web tension measuring and control systems” from FMS Force Measuring Systems AG, Oberglatt / Switzerland). In the patent mentioned also referred to other devices for measuring radial bearing forces.
  • the invention has for its object a device with the features of Preamble of claim 1 to improve, so that a more uniform ripple is reached and an adjustment of the force with which the second roller is acted upon, when changing the pressing force is not necessary.
  • Two rollers 1, 2 which can be driven in the sense indicated by arrows are at the entrance a stuffer box 3 arranged.
  • the axes of the two rollers 1, 2 are mutually parallel.
  • the bearings of the first roller 1 are immovable with a machine frame 4 connected, which is only hinted at in the drawing.
  • the bearings of the second roller 2 sit on a swivel arm 5, the swivel bracket 6 on the machine frame is articulated. By pivoting the swivel arms 5, the width of the between Rolls 1, 2 located gap 7 changeable.
  • the stuffer box 3 has a rectangular cross section. It is made up of four wall panels enclosed, namely a pressure plate 9, a counter plate 10 and two side plates. These are parallel to the plane of the drawing and are not in the drawing shown. Like the counter plate 10, they are fixed to the machine frame connected.
  • the pressure plate 9 is on each side with a rocker 11 to form a rigid unit connected. This is articulated on the swivel arm 5, so that the hinge axis with the Axis of the roller 2 coincides.
  • a longitudinally extending lateral groove 12 of the pressure plate 9 serves as Guide for a sliding block 13.
  • a rod 14 engages on this Press device on, for. B. the piston rod of a not shown, with the Machine frame connected piston-cylinder unit.
  • At the output end of the Pressure plate 9 is laterally attached to an actuator 15 which by a coupling member 16th is connected to the slide block 13.
  • a force sensor 17 is on the joint between the rocker 11 and the Swivel arm 5 arranged so that it acts on a perpendicular to the swivel arm 5 Responsiveness appeals.
  • the sensor 17 is through a measurement signal transmission line 18 connected to the input of a controller 19.
  • the controller 19 To transmit one of those Controller 19 formed control signal, the controller 19 through a line 20 to the Actuator 15 connected.
  • the control signal of the controller 19 causes the control element 15 such a displacement of the sliding block 13 that the reaction force to one predetermined fixed value is adjusted.
  • the sliding block 13 is always in one by the actuator 15 Positioned that there is a balance between that of the enclosed Thread material exerted on the pressure plate 9 back pressure on the one hand and the resulting force from the dead weight of the pressure plate 9 and the Piston rod 8 initiated pressing force on the other hand. In this way the Reactive force kept essentially at zero.
  • the on the incoming bundle of threads normal force or band is therefore - apart from small Control fluctuations - constant, regardless of changes in the operating state.
  • FIGS. 2 to 5 there is one Base plate 21 a machine housing 22, which has approximately the shape of a lying L. On the longer, horizontally lying leg is closely next to the vertically a bearing 23 for the lower roller 24 attached to the upper leg. At the the bearing of a swivel arm 25 sits at the upper end of the vertical leg.
  • This has the shape of a hood with a sloping roof surface 26 and vertical Sidewalls 27. On the two sidewalls 27 are bearings 28 for the upper roller 29 attached. At the front end of the swivel arm 25 are on the two Sidewalls 27 tie rods 30 articulated. They are with piston rods 31 from Cylinder 32 articulated.
  • swivel arm 25 With the swivel arm 25 is a rocker arm 33, which is similar to the swivel arm 25 hood-shaped with a slightly inclined roof 34 and vertical side parts 35 (FIG. 4) is articulated in a manner described in detail below connected.
  • a pressure plate 36 is attached to the underside of the rocker 33. Is located between the pressure plate 36 and an opposing counter plate 37 the compression chamber 38. It is laterally limited by side plates 39.
  • the force measuring bearing 41 consists of an inner ring 43, which is a Rolling bearing 44 for the shaft journal 42 receives, and an outer ring 45, which is fixed is connected to the bearing block 40.
  • a gap 46 extends between the inner Ring 43 and the outer ring 45 over an arc of more than 300 °.
  • To the Both ends of the gap 46 opens into a bore 47, the axis of which is parallel to Axis of the force measuring bearing 41 is aligned.
  • the diameter of the bore 47 is significantly larger than the width of the gap 46.
  • the web 48 is arranged horizontally, that is. he is in the Nine o'clock position. At two points in a vertical plane, i. H. in the Six o'clock position and in the twelve o'clock position, the gap 46 has two opposite semicircular recesses. In it sit with game bolt 49.
  • a pull rod 50 on both sides connected by a hinge 51, consisting of a hinge pin 52 and one the tie rod 50 attached hinge eyelet 53.
  • the two tie rods 50 are in essentially directed vertically and connected to piston rods 54 of cylinders 55, who sit under the base plate 21.
  • the pivot pin 52 is in a horizontal groove in the side parts 35 of the rocker arm 33 guided so that it is displaceable in the horizontal direction. On the pivot pin 52 attacks a piston rod of a double-acting cylinder 56 on the underside the rocker 33 is articulated approximately in the middle.
  • Strain gauges 57 are glued to the two sides of the web 48. This are integrated in an electrical measuring bridge in a known manner. If on the Shaft journal 42 acts a reaction force in the vertical direction, the web 48 on Bending stressed and deformed accordingly. The deformation causes one Strain on the strain gauges 57. This causes a strain on the measuring bridge generated electrical measurement signal, which is a measure of the deformation and thus for the Reaction force is.
  • the measurement signal is fed to the input of a controller.
  • the regulator compares the measurement signal with a specified reference variable and generates it corresponding to the determined difference, control signals for valves that control the pressure medium supply to the double-acting cylinder 56 in the sense of negative feedback influence, so that the determined difference between the measurement signal and the command variable is reduced. This makes the reaction force depending on the choice of the command variable adjusted to zero or to a desired fixed value.
  • the bolts 49 protect the web 48 from permanent deformations by Overload act as stops

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Tyre Moulding (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

PCT No. PCT/EP96/04461 Sec. 371 Date Mar. 5, 1998 Sec. 102(e) Date Mar. 5, 1998 PCT Filed Oct. 14, 1996 PCT Pub. No. WO97/14831 PCT Pub. Date Apr. 24, 1997A device for crimping synthetic bundles or slivers of yarns, the device has a stuffing box provided with an inlet for a yarn bundle or sliver and including a movable press plate and a stationary counter plate opposite to the press plate, two axially parallel rollers disposed at the inlet for the yarn bundle or sliver and forming a gap through which the yarn bundle or sliver enters the stuffing box, a pivot arm pivotally mounted on a stationary pivot bearing, one of the two axially parallel rollers being rotatably mounted at a fixed position in a machine frame, another of the two axially parallel rollers being seated on the pivot arm so as to be rotatable about a rotation axis thereof and the press plate being pivotally connected to the pivot arm by means of a rocker so as to be pivotable about the rotation axis of the roller seated on the pivot arm or another rotation axis parallel with the rotation axis of the roller seated on the pivot arm, whereby the gap between the rollers is varied, a contact pressure device for applying a contact-pressure force directed toward the counter plate to the press plate at an engagement point movable in a longitudinal direction of the stuffing box, an adjusting device for moving the engagement point of the contact-pressure forced on the press plate along the press plate, and a closed-loop control circuit unit for adjusting a reaction force acting between the rocker and the pivot arm to a predetermined fixed value by actuating the adjusting device.

Description

Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device according to the preamble of patent claim 1.

Sie geht von Vorrichtungen aus, die durch DE 18 77 098 U, US 2 862 279 A oder EP 0 268 031 B1 bekannnt geworden sind.It is based on devices described by DE 18 77 098 U, US 2 862 279 A or EP 0 268 031 B1 have become known.

Bei den bekannten Vorrichtungen wird durch die Walzen eine Normalkraft auf das einlaufende Fadenbündel oder -band ausgeübt. Durch die entsprechende Reibungskarft wird das Bündel oder Band in die Stauchkammer hineingedrückt. Durch Anpressen der Druckplatte an das in der Stauchkammer befindliche Material wird die erforderliche Gegenkraft zu der an den Walzen wirkenden Reibungskraft erzeugt. Außerdem wirkt ein Gegendruck auf die Druckplatte, der durch die Rückstellkraft des komprimierten Materials in der Stauchkammer entsteht. Dieser ist im allgemeinen ungleichförmig über die Länge der Stauchkammer verteilt und nimmt in der Regel in Förderrichtung zu. Wenn der Mittelpunkt der Gegendruckkräfte nicht mit dem Angriffspunkt der Resultierenden aus dem Eigengewicht der Druckplatte und der an der Druckplatte angreifenden Andrückkraft übereinstimmt, stellt sich zwischen der zweiten Walze und der Druckplatte die für die Aufrechterhaltung des Kräftegleichgewichtes der Druckplatte erforderliche Reaktionskraft ein. Diese beeinflußt die von den beiden Walzen auf das einlaufende Fadenbündel oder -band wirkende Normalkraft, indem sie sich der Kraft, mit der die zweite Walze beaufschlagt ist, überlagert.In the known devices, a normal force is exerted on the rollers incoming bundle of threads or ribbon exercised. Through the appropriate friction the bundle or ribbon is pressed into the stuffer box. By pressing the Pressure plate on the material in the stuffer box becomes the required Counterforce to the frictional force acting on the rollers generated. Also acts Back pressure on the pressure plate caused by the restoring force of the compressed Material is created in the stuffer box. This is generally non-uniform the length of the stuffer box is distributed and usually increases in the direction of conveyance. If the center of the counter pressure forces not with the starting point of the resultant from the dead weight of the pressure plate and that acting on the pressure plate Pressing force agrees, arises between the second roller and the pressure plate the necessary for maintaining the balance of forces of the pressure plate Reaction force. This affects that of the two rollers on the incoming Thread bundle or band acting normal force, by the force with which the second roller is applied, superimposed.

Bei den Stauchkammem, die den eingangs angegebenen Druckschriften zu entnehmen sind, ist der Angriffspunkt der Andückkraft fixiert. Gemäß EP 0 268 031 B1 liegt er am Ausgang der Stauchkammer. Der Mittelpunkt der Gegendruckkräfte liegt stets im mittleren Bereich der Stauchkammer. Daher stellt sich bei dieser Vorrichtung stets eine Reaktionskraft zwischen der Druckplatte und der zweiten Walze ein. Bei den Vorrichtungen gemäß den beiden anderen eingangs angegebenen Schriften greift die Andrückkraft im mittleren Bereich der Stauchkammer an der Druckplatte an. Auch hierbei ist eine Reaktionskraft, die auf die zweite Walze wirkt, nicht generell zu vermeiden. Lediglich für eine bestimmte Andrückkraft gewährleistet der ausgeführte Angriffspunkt, daß keine Reaktionskraft auf die zweite Walze wirkt. For the compression chambers, see the documents mentioned at the beginning the point of application of the pressing force is fixed. According to EP 0 268 031 B1, it lies on Exit of the stuffer box. The center of the counter pressure forces is always in middle area of the stuffer box. Therefore, this device always has one Reactive force between the pressure plate and the second roller. Both Devices according to the two other documents specified at the outset engage Pressure in the middle of the stuffer box on the pressure plate. Here too a reaction force that acts on the second roller cannot generally be avoided. Only for a certain pressing force does the executed point of attack guarantee that no reaction force acts on the second roller.

Verfahrensbedingt ist zur Erreichung bestimmter Kräuseleigenschaften oder zur Kräuselung unterschiedlicher Materialien die Andrückkraft auf verschiedene Werte einzustellen. Eine Vorrichtung mit festem Angriffspunkt kann somit lediglich für ein einziges Verfahren so gewählt werden, daß keine Reaktionskraft auf die zweite Walze entsteht. Sobald die Anpresskraft verstellt wird, tritt eine Reaktionskraft auf, die zu einer Veränderung der Normalkarft führt. Zur Erreichung der ursprünglich eingestellten Normalkraft muß die Kraft, mit der die zweite Walze beaufschlagt wird, verändert werden. Diese Veränderung erfolgt üblicherweise durch Probieren und ist damit sehr aufwendig. Die Verteilung des von dem eingeschlossenen Fadenmaterial auf die Druckplatte ausgeübten Gegendruckes hängt vom Betriebszustand ab. Sie kann sich z. B. bei Titerschwankungen ändem. Dabei verlagert sich der Mittelpunkt der Gegendruckkräfte. Infolgedessen ergibt sich eine zeitlich veränderliche Reaktionskraft. Die hierdurch bedingten Schwankungen der auf das durchlaufende Fadenbündel oder - band wirkenden Normalkraft beeinträchtigen die Gleichmäßigkeit der Kräuselung.The process is necessary to achieve certain crimping properties or Crimping different materials the pressing force to different values adjust. A device with a fixed point of attack can therefore only be used for one only method can be chosen so that no reaction force on the second roller arises. As soon as the contact pressure is adjusted, a reaction force occurs that leads to a Changes in normal carotid leads. To achieve the originally set Normal force must change the force that is applied to the second roller become. This change is usually done by trial and is very great complex. The distribution of the included thread material on the Pressure plate applied back pressure depends on the operating condition. You can z. B. change in titre fluctuations. The focus of the Back pressure forces. As a result, the reaction force changes over time. The resulting fluctuations in the thread bundle or - tied normal force affect the uniformity of the crimp.

Aus der DE-PS 2 716 024 ist eine Vorrichtung zum Messen der auf ein Wälzlager einwirkenden Radialkraft mittels elastisch verformbarer Glieder und eines elektrischen Signalgebers bekannt. Diese Vorrichtungen sind unter der Bezeichnung "Kraftmeßlager" erhältlich (Prospekt "Kraftaufnehmer für FMS-Bahnzugmeß- und Regelsysteme" der FMS Force Measuring Systems AG, Oberglatt/Schweiz). In der genannten Patentschrift wird auch auf andere Vorrichtungen zum Messen radialer Lagerkräfte verwiesen.From DE-PS 2 716 024 is a device for measuring the on a rolling bearing acting radial force by means of elastically deformable members and an electrical Signal generator known. These devices are known as "force measuring bearings" available (brochure "Force transducers for FMS web tension measuring and control systems" from FMS Force Measuring Systems AG, Oberglatt / Switzerland). In the patent mentioned also referred to other devices for measuring radial bearing forces.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung mit den Merkmalen des Oberbegriffs des Anspruchs 1 zu verbessem, so daß eine gleichmäßigere Kräuselung erreicht wird und eine Verstellung der Kraft, mit der die zweite Walze beaufschlagt wird, bei einer Veränderung der Andrückkraft nicht notwendig ist.The invention has for its object a device with the features of Preamble of claim 1 to improve, so that a more uniform ripple is reached and an adjustment of the force with which the second roller is acted upon, when changing the pressing force is not necessary.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved by the characterizing features of Claim 1 solved.

Die Ansprüche 2 - 4 betreffen weitere vorteilhafte Merkmale der Erfindung.Claims 2-4 relate to further advantageous features of the invention.

Die Zeichnung dient zur Erläuterung der Erfindung.

Figur 1
veranschaulicht das Prinzip der Erfindung.
The drawing serves to explain the invention.
Figure 1
illustrates the principle of the invention.

Die übrigen Figuren zeigen vereinfacht ein Ausführungsbeispiel, und zwar zeigt

Figur 2
die Vorrichtung von der Seite
Figur 3
die Vorrichtung von vome
Figur 4
eine Einzelheit
Figur 5
eine andere Einzelheit
The remaining figures show an exemplary embodiment in simplified form, namely
Figure 2
the device from the side
Figure 3
the device from vome
Figure 4
a detail
Figure 5
a different detail

Zwei in dem durch Pfeile angedeuteten Sinn antreibbare Walzen 1, 2 sind am Eingang einer Stauchkammer 3 angeordnet. Die Achsen der beiden Walzen 1, 2 sind zueinander parallel. Die Lager der ersten Walze 1 sind unbeweglich mit einem Maschinengestell 4 verbunden, welches in der Zeichnung nur angedeutet ist. Die Lager der zweiten Walze 2 sitzen auf einem Schwenkarm 5, der mit Schwenklagem 6 am Maschinengestell angelenkt ist. Durch Verschwenken der Schwenkarme 5 ist die Breite des zwischen den Walzen 1, 2 befindlichen Spaltes 7 veränderlich. An dem Schwenkarm 5 greifen zwei Kolbenstangen 8 oder dergleichen an. dadurch ist die zweite Walze 2 mit einer Kraft beaufschlagbar, die auf die erste Walze 1 gerichtet ist.Two rollers 1, 2 which can be driven in the sense indicated by arrows are at the entrance a stuffer box 3 arranged. The axes of the two rollers 1, 2 are mutually parallel. The bearings of the first roller 1 are immovable with a machine frame 4 connected, which is only hinted at in the drawing. The bearings of the second roller 2 sit on a swivel arm 5, the swivel bracket 6 on the machine frame is articulated. By pivoting the swivel arms 5, the width of the between Rolls 1, 2 located gap 7 changeable. Two engage on the swivel arm 5 Piston rods 8 or the like. thereby the second roller 2 is with a force actable, which is directed to the first roller 1.

Die Stauchkammer 3 hat einen rechteckigen Querschnitt. Sie ist von vier Wandplatten umschlossen, nämlich einer Druckplatte 9, einer Gegenplatte 10 und zwei Seitenplatten. Diese liegen zur Ebene der Zeichnung parallel und sind in der Zeichnung nicht dargestellt. Sie sind ebenso wie die Gegenplatte 10 fest mit dem Maschinengestell verbunden.The stuffer box 3 has a rectangular cross section. It is made up of four wall panels enclosed, namely a pressure plate 9, a counter plate 10 and two side plates. These are parallel to the plane of the drawing and are not in the drawing shown. Like the counter plate 10, they are fixed to the machine frame connected.

Die Druckplatte 9 ist an jeder Seite mit einer Schwinge 11 zu einer in sich starren Einheit verbunden. Diese ist an dem Schwenkarm 5 angelenkt, so daß die Gelenkachse mit der Achse der Walze 2 übereinstimmt.The pressure plate 9 is on each side with a rocker 11 to form a rigid unit connected. This is articulated on the swivel arm 5, so that the hinge axis with the Axis of the roller 2 coincides.

Eine sich in Längsrichtung erstreckende seitliche Nut 12 der Druckplatte 9 dient als Führung für einen Gleitblock 13. An diesem greift eine Stange 14 einer Andrückvorrichtung an, z. B. die Kolbenstange einer nicht dargestellten, mit dem Maschinengestell verbundenen Kolben-Zylinder-Einheit. Am ausgangsseitigen Ende der Druckplatte 9 ist seitlich ein Stellorgan 15 befestigt, welches durch ein Kopplungsglied 16 mit dem Gleitblock 13 verbunden ist.A longitudinally extending lateral groove 12 of the pressure plate 9 serves as Guide for a sliding block 13. A rod 14 engages on this Press device on, for. B. the piston rod of a not shown, with the Machine frame connected piston-cylinder unit. At the output end of the Pressure plate 9 is laterally attached to an actuator 15 which by a coupling member 16th is connected to the slide block 13.

Ein Kraftmeßfühler 17 ist an dem Gelenk zwischen der Schwinge 11 und dem Schwenkarm 5 so angeordnet, daß er auf eine senkrecht zum Schwenkarm 5 wirkenden Reaktionskraft anspricht. Der Meßfühler 17 ist durch eine Meßsignalübertragungsleitung 18 mit dem Eingang eines Reglers 19 verbunden. Zum Übertragen eines von dem Regler 19 gebildeten Stellsignals ist der Regler 19 durch eine Leitung 20 mit dem Stellorgan 15 verbunden. Das Stellsignal des Reglers 19 veanlasst das Stellorgan 15 zu einer solchen Verschiebung des Gleitblocks 13, daß die Reaktionskraft auf einen vorgegebenen festen Wert eingeregelt wird.A force sensor 17 is on the joint between the rocker 11 and the Swivel arm 5 arranged so that it acts on a perpendicular to the swivel arm 5 Responsiveness appeals. The sensor 17 is through a measurement signal transmission line 18 connected to the input of a controller 19. To transmit one of those Controller 19 formed control signal, the controller 19 through a line 20 to the Actuator 15 connected. The control signal of the controller 19 causes the control element 15 such a displacement of the sliding block 13 that the reaction force to one predetermined fixed value is adjusted.

Vorzugsweise wird der Gleitblock 13 durch das Stellorgan 15 stets in eine solche Stellung gebracht, daß Gleichgewicht besteht zwischen dem von dem eingeschlossenen Fadenmaterial auf die Druckplatte 9 ausgeübten Gegendruck einerseits und der resultierenden Kraft aus dem Eigengewicht der Druckplatte 9 und der über die Kolbenstange 8 eingeleiteten Andrückkraft andererseits. Auf diese Weise wird die Reaktionskraft im wesentlichen auf Null gehalten. Die auf das einlaufende Fadenbündel oder -band wirkende Normalkraft ist daher - abgesehen von geringen Regelschwankungen - konstant, unabhängig von Änderungen des Betriebszustandes.Preferably, the sliding block 13 is always in one by the actuator 15 Positioned that there is a balance between that of the enclosed Thread material exerted on the pressure plate 9 back pressure on the one hand and the resulting force from the dead weight of the pressure plate 9 and the Piston rod 8 initiated pressing force on the other hand. In this way the Reactive force kept essentially at zero. The on the incoming bundle of threads normal force or band is therefore - apart from small Control fluctuations - constant, regardless of changes in the operating state.

Bei dem in den Figuren 2 bis 5 veranschaulichten Ausführungsbeispiel ist auf einer Grundplatte 21 ein Maschinengehäuse 22 , das etwa die Form eines liegenden L hat. Auf dem längeren, waagerecht liegenden Schenkel ist eng neben dem senkrecht nach oben gerichteteten Schenkel ein Lager 23 für die untere Walze 24 angebracht. Am oberen Ende des senkrechten Schenkels sitzt das Lager eines Schwenkarms 25.In the exemplary embodiment illustrated in FIGS. 2 to 5, there is one Base plate 21 a machine housing 22, which has approximately the shape of a lying L. On the longer, horizontally lying leg is closely next to the vertically a bearing 23 for the lower roller 24 attached to the upper leg. At the the bearing of a swivel arm 25 sits at the upper end of the vertical leg.

Dieser hat die Form einer Haube mit schräger Dachfläche 26 und senkrechten Seitenwangen 27. An den beiden Seitenwangen 27 sind Lager 28 für die obere Walze 29 angebracht. Am vorderen Ende des Schwenkarms 25 sind an den beiden Seitenwangen 27 Zuganker 30 gelenkig befestigt. Sie sind mit Kolbenstangen 31 von Zylindem 32 gelenkig verbunden. This has the shape of a hood with a sloping roof surface 26 and vertical Sidewalls 27. On the two sidewalls 27 are bearings 28 for the upper roller 29 attached. At the front end of the swivel arm 25 are on the two Sidewalls 27 tie rods 30 articulated. They are with piston rods 31 from Cylinder 32 articulated.

Mit dem Schwenkarm 25 ist eine Schwinge 33, die ähnlich wie der Schwenkarm 25 haubenförmig mit leicht geneigtem Dach 34 und senkrechten Seitenteilen 35 (Figur 4) ausgebildet ist, in einer weiter unten ausführlich beschriebenen Weise gelenkig verbunden. An der Unterseite der Schwinge 33 ist eine Druckplatte 36 befestigt. Zwischen der Druckplatte 36 und einer ihr gegenüberliegenden Gegenplatte 37 befindet sich die Stauchkamnmer 38. Sie ist seitlich durch Seitenplatten 39 begrenzt.With the swivel arm 25 is a rocker arm 33, which is similar to the swivel arm 25 hood-shaped with a slightly inclined roof 34 and vertical side parts 35 (FIG. 4) is articulated in a manner described in detail below connected. A pressure plate 36 is attached to the underside of the rocker 33. Is located between the pressure plate 36 and an opposing counter plate 37 the compression chamber 38. It is laterally limited by side plates 39.

An der Unterseite der Seitenteile 35 sind Lagerböcke 40 angebracht, in denen je ein Kraftmeßlager 41 eingebaut ist. Die beiden Kraftmeßlager 41 sitzen auf verlängerten Wellenzapfen 42 der oberen Walze 29.On the underside of the side parts 35 bearing blocks 40 are attached, in each of which one Force measurement bearing 41 is installed. The two force measuring bearings 41 sit on extended Shaft journal 42 of the upper roller 29.

Das Kraftmeßlager 41 besteht gemäß Figur 5 aus einem inneren Ring 43, der ein Wälzlager 44 für den Wellenzapfen 42 aufnimmt, und einem äußeren Ring 45, der fest mit dem Lagerbock 40 verbunden ist. Ein Spalt 46 erstreckt sich zwischen dem inneren Ring 43 und dem äußeren Ring 45 über einen Kreisbogen von mehr als 300°. An den beiden Enden mündet der Spalt 46 in je eine Bohrung 47, deren Achse parallel zur Achse des Kraftmeßlagers 41 ausgerichtet ist. Der Durchmesser der Bohrung 47 ist wesentlich größer als die Weite des Spaltes 46. Zwischen den beiden Bohrungen 47 befndet sich ein kurzer radialer Steg 48, der den inneren Ring 43 mit dem äußeren Ring 45 verbindet. Der Steg 48 ist waagerecht angeordnet, d h. er befindet sich in der Neunuhr-Stellung. An zwei in einer senkrechten Ebene liegenden Stellen, d. h. in der Sechsuhr-Stellung und in der Zwölfuhr-Stellung, hat der Spalt 46 je zwei gegenüberliegende halbrunde Aussparungen. Darin sitzen mit Spiel Bolzen 49.According to FIG. 5, the force measuring bearing 41 consists of an inner ring 43, which is a Rolling bearing 44 for the shaft journal 42 receives, and an outer ring 45, which is fixed is connected to the bearing block 40. A gap 46 extends between the inner Ring 43 and the outer ring 45 over an arc of more than 300 °. To the Both ends of the gap 46 opens into a bore 47, the axis of which is parallel to Axis of the force measuring bearing 41 is aligned. The diameter of the bore 47 is significantly larger than the width of the gap 46. Between the two bores 47 there is a short radial web 48, the inner ring 43 with the outer ring 45 connects. The web 48 is arranged horizontally, that is. he is in the Nine o'clock position. At two points in a vertical plane, i. H. in the Six o'clock position and in the twelve o'clock position, the gap 46 has two opposite semicircular recesses. In it sit with game bolt 49.

Mit dem vorderen Ende der Schwinge 33 ist an beiden Seiten je eine Zugstange 50 durch ein Gelenk 51 verbunden, bestehend aus einem Gelenkzapfen 52 und einer an der Zugstange 50 angebrachten Gelenköse 53. Die beiden Zugstangen 50 sind im wesentlichen senkrecht gerichtet und mit Kolbenstangen 54 von Zylindem 55 verbunden, die unter der Grundplatte 21 sitzen.With the front end of the rocker 33 there is a pull rod 50 on both sides connected by a hinge 51, consisting of a hinge pin 52 and one the tie rod 50 attached hinge eyelet 53. The two tie rods 50 are in essentially directed vertically and connected to piston rods 54 of cylinders 55, who sit under the base plate 21.

Der Gelenkzapfen 52 ist in einer horizontalen Nut der Seitenteile 35 der Schwinge 33 geführt, so daß er in waagerechter Richtung verschieblich ist. An dem Gelenkzapfen 52 greift eine Kolbenstange eines doppelt wirkenden Zylinders 56 an, der an der Unterseite der Schwinge 33 etwa in der Mitte angelenkt ist. The pivot pin 52 is in a horizontal groove in the side parts 35 of the rocker arm 33 guided so that it is displaceable in the horizontal direction. On the pivot pin 52 attacks a piston rod of a double-acting cylinder 56 on the underside the rocker 33 is articulated approximately in the middle.

An den beiden Seiten des Steges 48 sind Dehnungsmeßstreifen 57 angeklebt. Diese sind in bekannter Weise in eine elektrische Meßbrücke integriert. Wenn auf den Wellenzapfen 42 in senkrechter Richtung eine Reaktionskraft wirkt, wird der Steg 48 auf Biegung beansprucht und entsprechend verformt. Die Verformung bewirkt eine Belastung der Dehnungsmeßstreifen 57. Dadurch wird an der Meßbrücke ein elektrisches Meßsignal erzeugt, welches ein Maß für die Verformung und somit für die Reaktionskraft ist. Das Meßsignal wird dem Eingang eines Reglers zugeführt. Der Regler vergleicht das Meßsignal mit einer vorgegebenen Führungsgröße und erzeugt entsprechend der ermittelten Differenz Stellsignale für Ventile, die die Druckmittelzufuhr zu dem doppelt wirkenden Zylinder 56 im Sinne einer negativen Rückkopplung beeinflussen, so daß die ermittelte Differenz zwischen Meßsignal und Führungsgröße verkleinert wird. Dadurch wird die Reaktionskraft je nach der Wahl der Führungsgröße auf Null oder auf einen gewünschten festen Wert eingeregelt.Strain gauges 57 are glued to the two sides of the web 48. This are integrated in an electrical measuring bridge in a known manner. If on the Shaft journal 42 acts a reaction force in the vertical direction, the web 48 on Bending stressed and deformed accordingly. The deformation causes one Strain on the strain gauges 57. This causes a strain on the measuring bridge generated electrical measurement signal, which is a measure of the deformation and thus for the Reaction force is. The measurement signal is fed to the input of a controller. The regulator compares the measurement signal with a specified reference variable and generates it corresponding to the determined difference, control signals for valves that control the pressure medium supply to the double-acting cylinder 56 in the sense of negative feedback influence, so that the determined difference between the measurement signal and the command variable is reduced. This makes the reaction force depending on the choice of the command variable adjusted to zero or to a desired fixed value.

Angenommen, bei einer Führungsgröße, die der Reaktionskraft Null entspricht, übe die Schwinge 33 eine nach oben gerichtete Reaktionskraft auf den Zapfen 42 und somit auch auf den Schwenkarm 25 aus. Das bedeutet, daß die mit den Zugstangen 50 aufgebrachte Andrückkraft in Bezug auf die Schwenkachse der Schwinge 33 einen längeren Hebelarm hat als der Mittelpunkt der Gegendruckkräfte. Dementsprechend beeinflusst der Regler die Druckmittelzufuhr des doppelt wirkenden Zylinders 56 in der Weise, daß der Gelenkzapfen 52 soweit in Richtung auf die Schwenkachse verschoben wird, bis die Reaktionskraft verschwindet.Assume that with a command variable that corresponds to zero reaction force, practice the Swing 33 an upward reaction force on the pin 42 and thus also on the swivel arm 25. This means that the tie rods 50 applied pressing force with respect to the pivot axis of the rocker 33 a has longer lever arm than the center of the counter pressure forces. Accordingly the controller influences the pressure medium supply of the double-acting cylinder 56 in FIG Way that the pivot pin 52 is moved so far in the direction of the pivot axis until the reaction force disappears.

Die Bolzen 49 schützen den Steg 48 vor bleibenden Verformungen, indem sie bei Überlast als Anschläge wirkenThe bolts 49 protect the web 48 from permanent deformations by Overload act as stops

Claims (4)

  1. A device for crimping synthetic bundles or slivers of yarn, having the following features:
    a) at the inlet of a stuffer box are arranged two axially parallel rollers, between which is provided a gap for feeding in a bundle or sliver of yarn;
    b) the bearings of the first roller are immovably connected to a machine frame;
    c) the bearings of the second roller are displaceable in such a manner that the width of the gap is variable;
    d) the second roller can be acted upon by a force exerted on the first roller;
    e) the stuffer box is enclosed by a pressure plate, an immovable counter plate and two side plates;
    f) the pressure plate is pivotable about the axis of the second roller or an axis arranged parallel therewith:
    g) the pressure plate can be acted upon by a pressure force exerted on the counter plate by means of a pressure device;
    characterised by the following further features:
    h) the point of application of the pressure force is displaceable in the longitudinal direction of the stuffer box (3, 32) by means of an adjusting member (15, 56) acting on the pressure device (50 to 55);
    i) the reaction force acting between a rocker (11, 33) and a swivel arm (5, 25) can be set to a predetermined fixed value by actuating the adjusting member (15, 56) by means of a control circuit.
  2. A device according to claim 1, characterised in that the reaction force can be set to zero.
  3. A device according to claim 1 or 2, characterised in that a force sensor (17, 41) is arranged at the joint between the rocker (1 1, 33) and the swivel arm (5, 25) and responds to a reaction force acting perpendicularly to the swivel arm (5, 25).
  4. A device according to any one of claims 1 to 3, characterised by a force-sensing bearing (41) which is connected to the rocker (11, 33) and receives the journal (42) of the second roller (2, 39).
EP96934674A 1995-10-16 1996-10-14 Device for crimping of synthetic bundles or slivers of yarns Expired - Lifetime EP0856071B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19538423A DE19538423C2 (en) 1995-10-16 1995-10-16 Device for crimping synthetic bundles of threads or tapes
DE19538423 1995-10-16
PCT/EP1996/004461 WO1997014831A1 (en) 1995-10-16 1996-10-14 Device for crimping of synthetic bundles or slivers of yarns

Publications (2)

Publication Number Publication Date
EP0856071A1 EP0856071A1 (en) 1998-08-05
EP0856071B1 true EP0856071B1 (en) 1999-07-21

Family

ID=7774942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934674A Expired - Lifetime EP0856071B1 (en) 1995-10-16 1996-10-14 Device for crimping of synthetic bundles or slivers of yarns

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US (1) US6009606A (en)
EP (1) EP0856071B1 (en)
JP (1) JP3059219B2 (en)
AT (1) ATE182375T1 (en)
DE (3) DE19538423C2 (en)
ES (1) ES2136434T3 (en)
WO (1) WO1997014831A1 (en)

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US20090118019A1 (en) * 2002-12-10 2009-05-07 Onlive, Inc. System for streaming databases serving real-time applications used through streaming interactive video
US7524349B2 (en) * 2005-05-03 2009-04-28 Donaldson Company, Inc. Air cleaner; air filter cartridge and method of manufacturing
WO2008124437A2 (en) * 2007-04-03 2008-10-16 Donaldson Company, Inc. Air cleaner; air filter cartridge and method of manufacturing
DE602008005706D1 (en) * 2008-03-03 2011-05-05 M A E S P A Apparatus for crimping synthetic fibers and control methods
US9033750B2 (en) * 2012-08-15 2015-05-19 Tyco Electronics Corporation Electrical contact
US9796492B2 (en) 2015-03-12 2017-10-24 Graco Minnesota Inc. Manual check valve for priming a collapsible fluid liner for a sprayer
WO2020243438A1 (en) 2019-05-31 2020-12-03 Graco Minnesota Inc. Handheld fluid sprayer

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Publication number Priority date Publication date Assignee Title
NL78597C (en) * 1953-05-28
US2856640A (en) * 1954-02-01 1958-10-21 Deering Milliken Res Corp Apparatus for crimping textile strands
US2862279A (en) * 1956-04-10 1958-12-02 Allied Chem Tow crimping apparatus
DE1877098U (en) * 1963-06-08 1963-08-08 Neumuenster Masch App COMPRESSION CURLING DEVICE.
US3353223A (en) * 1963-08-19 1967-11-21 Eastman Kodak Co Method and apparatus for crimping
US3225415A (en) * 1964-08-28 1965-12-28 Du Pont Defect responsive apparatus
CH529856A (en) * 1970-08-10 1972-10-31 Vepa Ag Device for crimping synthetic thread sheets
CH595622A5 (en) * 1976-06-28 1978-02-15 Heinrich Gruenbaum
US4041584A (en) * 1976-09-29 1977-08-16 E. I. Du Pont De Nemours And Company Loading apparatus for crimper rolls
DE2733455C2 (en) * 1977-07-25 1982-12-30 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Stuffer box for texturing chemical fibers
US4547934A (en) * 1984-01-31 1985-10-22 Phillips Petroleum Company Crimped staple fiber
DE3626522A1 (en) * 1986-06-26 1988-02-11 Vepa Ag BUCKET CHAMBER DEVICE FOR CURLING SYNTHETIC THREAD SHARES
DE3631905A1 (en) * 1986-09-19 1988-03-31 Bayer Ag CONTAINER CHAMBER AND METHOD FOR PRODUCING CURLED SYNTHETIC FIBERS

Also Published As

Publication number Publication date
WO1997014831A1 (en) 1997-04-24
EP0856071A1 (en) 1998-08-05
JP3059219B2 (en) 2000-07-04
DE59602497D1 (en) 1999-08-26
DE29617798U1 (en) 1996-12-12
DE19538423A1 (en) 1997-04-17
US6009606A (en) 2000-01-04
ES2136434T3 (en) 1999-11-16
JPH10512338A (en) 1998-11-24
DE19538423C2 (en) 1997-08-21
ATE182375T1 (en) 1999-08-15

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