EP0751245B1 - Heating apparatus for heating a moving yarn - Google Patents

Heating apparatus for heating a moving yarn Download PDF

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Publication number
EP0751245B1
EP0751245B1 EP96109591A EP96109591A EP0751245B1 EP 0751245 B1 EP0751245 B1 EP 0751245B1 EP 96109591 A EP96109591 A EP 96109591A EP 96109591 A EP96109591 A EP 96109591A EP 0751245 B1 EP0751245 B1 EP 0751245B1
Authority
EP
European Patent Office
Prior art keywords
thread
heating
yarn
heating apparatus
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96109591A
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German (de)
French (fr)
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EP0751245A3 (en
EP0751245A2 (en
Inventor
Uwe Baader
Johannes Bruske
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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Publication date
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Publication of EP0751245A2 publication Critical patent/EP0751245A2/en
Publication of EP0751245A3 publication Critical patent/EP0751245A3/en
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Publication of EP0751245B1 publication Critical patent/EP0751245B1/en
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Classifications

    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02JFINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass

Definitions

  • the invention relates to a heating device for heating a running one Fadens, according to the preamble of claim 1.
  • Such heating devices are known.
  • EP 0 412 429 B1 there is one such a heating device described, in which the thread by means of several Thread guide is guided along a radiator, in the general thread direction of thread, the thread guide in a groove a radiator are arranged so that the heating surfaces facing the groove of the heater and heating the thread.
  • the thread guide the known heating device lie on a curved line, which is at a distance from the heating surfaces.
  • This curved line is called executed a zigzag line, which is spanned in a surface that a distance to the heating surfaces over the entire length of the heating device having.
  • the zigzag line does the length of the Heating device related thread length, which in the heating device one Exposure to heating increases, but increases at the same time Friction of the thread on the thread guides. An increase in friction the thread guides adversely affect the thread tension. On the one hand the thread should be as long and effective as possible for effective heating nevertheless remain guided in the heating device with low friction, on the other hand, this requirement is increased yarn speeds opposite.
  • the heating device for heating the running thread is as Elongated radiator, which heating surfaces in the form of a Has groove in which several thread guides in the thread running direction one behind the other are attached.
  • the thread guides lie on a line with zigzag-shaped Changes in direction that are spanned in a surface that over the the entire length of the heating device is at a distance from the heating surfaces.
  • On the thread guides each experience a deflection, so that the Thread run corresponds to the line.
  • the number of changes in direction the line and thus also the thread are smaller than that Number of thread guides.
  • the zigzag lines, on which the thread guides are arranged are by at least one straight section interrupted. This results in a lower thread wrap on the thread guide and thus reduced friction.
  • the thread guides are arranged so that the line before or after at least two immediately one after the other arranged thread guides undergoes a change in direction.
  • each in the thread running direction thread guides lying side by side on a straight line essentially parallel to the heating surfaces and arranged so that the thread one the distance to the groove varies alternately in pairs when sweeping the thread guide has.
  • the one through the two side by side Thread guide formed section of the thread line is in each case, based on the center of the groove of the heating device, facing a heating surface off-center, so that the thread alternately on the two side by side Thread guides facing the heating surface of the groove after leaving this section into an also essentially parallel to the heating surface of the groove of the heating device opposite this heating surface passing section of the thread line.
  • the thread guides are slide-in plates or discs formed, which are in the groove of the heating device have extending thread guide slots, which are also extend parallel to the heating surfaces.
  • the thread guides are as rod-like elements formed, which are arranged on the heating surfaces and around which the thread runs.
  • the rod-like elements are now arranged that the thread always on the side facing away from the heating surfaces Thread guide passes, but the thread run with the side by side Thread guides is also off-center.
  • the rod-like Elements have a circular cross-section, with others rounded Cross sections such as oval cross-sections, slightly flattened cross-sections u. are possible.
  • the thread guides are as bead-like attached to the heating surfaces of the heater Elements trained.
  • the bead-like elements preferably have one essentially semi-cylindrical cross-section.
  • the bead-like elements in their cross section also the shape of a sine wave exhibit.
  • the thread guides are preferably at an equal distance from one another arranged so that the two adjacent to each other Thread guides formed, arranged substantially parallel to the heating surfaces Thread path sections each have the same length, in order to heat the thread as evenly as possible during the passage to ensure by the heater.
  • the thread running curve preferably essentially has a sinusoidal shape.
  • Fig. 1 shows a cross section through a radiator in principle Arrangement.
  • the heater 1, which has a U-shaped groove 6, is constructed so that arranged in the U-shaped block Heating elements their heating energy via the groove base 15 and the heating surfaces Submit 5.
  • Thread guide 2 arranged in the groove 10 are provided on disc-shaped carriers Thread guide 2 arranged. These thread guides 2 are as thread guide slots incorporated into the carrier 10, the slots being essentially parallel to the heating surfaces 5 and in the direction of the groove base 15 extend. Depending on the thread speed and the available heating energy as well as thread material, the thread guide slots can be closer to the heating surfaces or be located further away from the heating surfaces. According to the invention however, these thread guide slots are always in the area between Center line of the groove 6 and heating surfaces 5 are arranged.
  • the disc-shaped carrier 10 which essentially have the same distance from each other in the running direction of the thread, have a funnel-shaped on their side facing away from the heating device 1 Inlet to facilitate the insertion of the thread into the thread guide slot.
  • FIG. 2 is a plan view of the groove cross section of the heating device shown. For reasons of clarity, the heating devices are final Covers not shown.
  • the essentially even arranged thread guide 2 are with the respective thread guide slots shown through which the thread 7 runs.
  • the left in Fig. 2 The first two thread guides shown have thread guide slots which have an equal distance from the heating surface 5, so that between these two thread guides have a substantially parallel thread path, i.e. parallel to the heating surface 5. According to the deflection of the thread when entering the first thread guide and when leaving the second Thread guides, the thread guide slots are rounded.
  • the thread runs through the slots of the next two thread guides, their thread guide slots are arranged so that the heating surface 5 parallel course of the thread 7 is arranged closer to the heating surface 5, which of the heating surface facing the thread 7 between the first and the second thread guide is opposite.
  • the thread running curve has this thread guide according to the invention the advantage that a lower thread wrap on the thread guide and so that there is reduced friction. This will benefit achieves that the thread e.g. on every second or third thread guide the amount of coverage of the thread guides with respect to the median plane of the groove is redirected.
  • Thread guide lying on a straight line parallel to the groove, it will stand the zigzag-shaped thread course known in the art, in each case by straight Parts interrupted.
  • the wrap angle on the thread guide is in Comparison to the wrap angle when executing the state of the Technology only half the size (with triple arrangement corresponding to 1/3 etc.).
  • the overlap of the thread guides over the median plane of the groove is directed according to the process parameters or thread materials or the installed Heating capacity.
  • the Length of the heater i.e. the length of the thread, which of the heater is set for the purpose of heating, according to the Process parameters, especially determined according to the type of thread. Thread thickness, Thread speed, temperature of the radiator, dimensioning the heater etc. are relevant parameters for this. Take e.g. assuming that the total length should be 1 meter, results for each individual Radiators, several of which are in a row in the overall system can be arranged, a length of 500 mm.
  • Fig. 3 shows a heater in front view in the form of a vertical Section.
  • the heating device 1 designed as a U-shaped rail delimits a groove inside with the heating surfaces 5 and the groove bottom 15.
  • a resistance heater 14 arranged, via which the energy supply into the interior of the groove is realized becomes.
  • a structural unit is provided, which is preferably is attached by brackets.
  • This unit consists of one band-shaped carrier 10 and laterally attached thread guides 3. Die Thread guides are staggered on both sides, in pairs arranged at equal intervals.
  • the carrier 10 is by clamping the Unit deformed so that it has two opposite each successive pairs of thread guides is in contact, so that the unit fits under the elastic clamping forces in the groove.
  • the thread guides 3 are held in the groove 6 by caps 17.
  • This Caps 17 are C-shaped and grip the upper longitudinal edge one flank of the groove 6 each and engage even in small longitudinal grooves a, which is on both sides of the upper longitudinal edges in the side walls of the Groove, i.e. the heating surfaces 5 are introduced.
  • Fig. 4 shows a heating device with carriers and thread guides in plan view on the groove 6 of the heating device 1.
  • the carrier 10 with the thread guides 9 is inserted in the groove.
  • the carrier 10 is in a Forced lines that correspond to that shown in Fig. 4. that is, the carrier touches two adjacent thread guides, which are in the thread running direction one after the other alternately in pairs on opposite Sides of the heating surfaces 5 of the groove 6 are arranged.
  • the individual thread guides 9 are supported on the side walls, i.e. the heating surfaces of the Groove, off.
  • it is important that the tape, which forms the carrier 10, is elastic, and also in the intended Heating to more than 400 ° C remains elastic.
  • FIG. 5 shows a further exemplary embodiment of a heating device according to FIG the invention shown as a cross section through the heating device.
  • the Heating device 1 is in turn an elongated, U-shaped body formed, which has in its interior resistance heater 14, which are introduced into corresponding bores of the heating device 1 and which is the heating of the formed in the U-shaped radiator Serve groove 6.
  • Two metal strips 13 are inserted into the groove 6.
  • the metal strips 13 are supported on the opposite side walls, i.e. Heating surfaces 5, the longitudinal groove.
  • the trained as beads Elevations serve as thread guides and are in turn opposite one another Side walls facing.
  • the two metal strips 13 are Connected to one another via webs 8 in the region of the groove base 15, so that on the one hand the position of the metal strips 13 is fixed to each other and on the other others is prevented from threading the wall of the groove 6, i.e. the Nutground 15 touched.
  • the webs 8 are therefore preferably with a Distance to the groove base 15 is arranged.
  • the beads are designed so that on the open side of the U-shaped groove 6 through a V-shaped incision the bevel 18 is created, which also the insertion of the thread facilitated.
  • Fig. 6 shows another embodiment according to the invention in the form a top view of the groove cross section.
  • Bead-shaped serve as thread guide 11 Elevations, each in pairs in the direction of the thread one behind the other are arranged on opposite sides of the groove 6 so that essentially between the two bead-shaped elevations of the thread extends parallel to the heating surfaces 5, the height of the beads so is formed that they extend over the central plane of the groove 6.
  • In the area of the groove base 15 are webs 12 for holding the thread guide 11 on the respective heating surfaces 5 provided.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

Die Erfindung betrifft eine Heizeinrichtung zum Erwärmen eines laufenden Fadens, gemäß Oberbegriff von Anspruch 1.The invention relates to a heating device for heating a running one Fadens, according to the preamble of claim 1.

Derartige Heizeinrichtungen sind bekannt. In der EP 0 412 429 B1 ist eine derartige Heizeinrichtung beschrieben, bei welcher der Faden mittels mehrerer Fadenführer längs eines Heizkörpers geführt wird, und zwar in der allgemeinen Faden Fadenlaufrichtung, wobei die Fadenführer in einer Nut eines Heizkörpers angeordnet sind, so daß die der Nut zugewandten Heizflächen des Heizers und Erwärmung des Fadens beitragen. Die Fadenführer der bekannten Heizeinrichtung liegen auf einer gekrümmten Linie, welche einen Abstand zu den Heizflächen aufweist. Diese gekrümmte Linie ist als eine Zickzack-Linie ausgeführt, welche in einer Fläche aufgespannt ist, die über die gesamte Länge der Heizeinrichtung einen Abstand zu den Heizflächen aufweist. Durch die Zickzack-Linie wird zwar die auf die Länge der Heizeinrichtung bezogene Fadenlänge, welche in der Heizeinrichtung einer Aufheizung ausgesetzt ist, vergrößert, es erhöht sich jedoch gleichzeitig die Reibung des Fadens an den Fadenführern. Eine Erhöhung der Reibung an den Fadenführern wirkt sich nachteilig auf die Fadenspannung aus. Einerseits soll der Faden im Sinne einer effektiven Aufheizung möglichst lang und dennoch reibungsarm geführt in der Heizeinrichtung geführt verbleiben, andererseits steht diese Forderung erhöhten Fadenlaufgeschwindigkeiten entgegen. Such heating devices are known. In EP 0 412 429 B1 there is one such a heating device described, in which the thread by means of several Thread guide is guided along a radiator, in the general thread direction of thread, the thread guide in a groove a radiator are arranged so that the heating surfaces facing the groove of the heater and heating the thread. The thread guide the known heating device lie on a curved line, which is at a distance from the heating surfaces. This curved line is called executed a zigzag line, which is spanned in a surface that a distance to the heating surfaces over the entire length of the heating device having. The zigzag line does the length of the Heating device related thread length, which in the heating device one Exposure to heating increases, but increases at the same time Friction of the thread on the thread guides. An increase in friction the thread guides adversely affect the thread tension. On the one hand the thread should be as long and effective as possible for effective heating nevertheless remain guided in the heating device with low friction, on the other hand, this requirement is increased yarn speeds opposite.

Es ist deshalb die Aufgabe der vorliegenden Erfindung, eine Heizeinrichtung zum Erwärmen eines laufenden Fadens zu schaffen, bei welcher die Reibung des Fadens an den Fadenführern bei gleichbleibend hoher Fadenlaufgeschwindigkeit und im wesentlichen unverändertem Wärmeübergang reduziert wird.It is therefore an object of the present invention to provide a heater to heat a running thread in which the friction of the thread on the thread guides at a consistently high thread speed and substantially unchanged heat transfer is reduced.

Diese Aufgabe wird mit einer Heizeinrichtung mit den Merkmalen gemäß Anspruch 1 gelöst.This task is done with a heater with the features according to Claim 1 solved.

Danach ist die Heizeinrichtung zum Erwärmen des laufenden Fadens als langgestreckter Heizkörper ausgebildet, welcher Heizflächen in Form einer Nut aufweist, in der mehrere Fadenführer in Fadenlaufrichtung hintereinander angebracht sind. Die Fadenführer liegen auf einer Linie mit zickzack-förmigen Richtungsänderungen, die in einer Fläche aufgespannt ist, die über die ganze Länge der Heizeinrichtung einen Abstand zu den Heizflächen hat. An den Fadenführern erfährt ein Faden jeweils eine Ablenkung, so daß der Fadenlauf der Linie entspricht. Erfindungsgemäß ist die Anzahl der Richtungsänderungen der Linie und somit auch des Fadenlaufs kleiner als die Anzahl der Fadenführer. Mit anderen Worten, die zickzack-förmigen Linien, auf der die Fadenführer angeordnet sind, sind durch wenigstens einen geraden Abschnitt unterbrochen. Hierdurch wird eine geringere Fadenumschlingung am Fadenführer und damit eine reduzierte Reibung erzielt.After that, the heating device for heating the running thread is as Elongated radiator, which heating surfaces in the form of a Has groove in which several thread guides in the thread running direction one behind the other are attached. The thread guides lie on a line with zigzag-shaped Changes in direction that are spanned in a surface that over the the entire length of the heating device is at a distance from the heating surfaces. On the thread guides each experience a deflection, so that the Thread run corresponds to the line. According to the invention, the number of changes in direction the line and thus also the thread run smaller than that Number of thread guides. In other words, the zigzag lines, on which the thread guides are arranged are by at least one straight section interrupted. This results in a lower thread wrap on the thread guide and thus reduced friction.

Nach einer bevorzugten Ausbildung sind die Fadenführer so angeordnet, daß die Linie jeweils vor oder nach mindestens zwei unmittelbar hintereinander angeordneten Fadenführern eine Richtungsänderung erfährt.According to a preferred embodiment, the thread guides are arranged so that the line before or after at least two immediately one after the other arranged thread guides undergoes a change in direction.

Bei einem bevorzugten Ausführungsbeispiel sind jeweils zwei in Fadenlaufrichtung nebeneinanderliegende Fadenführer auf einer Geraden im wesentlichen parallel zu den Heizflächen und so angeordnet, daß der Faden einen paarweise alternierend variierenden Abstand zu der Nut beim Überstreichen der Fadenführer aufweist. Der durch die beiden nebeneinanderliegenden Fadenführer gebildete Abschnitt der Fadenlauflinie ist jeweils, bezogen auf die Mitte der Nut der Heizeinrichtung, außermittig einer Heizfläche zugewandt, so daß abwechselnd der Faden alternierend an den beiden nebeneinanderliegenden Fadenführern der einen Heizfläche der Nut zugewandt ist, um nach Verlassen dieses Abschnittes in einen ebenfalls wesentlichen parallel zu der dieser Heizfläche gegenüberliegenden Heizfläche der Nut der Heizeinrichtung verlaufenden Abschnitt der Fadenlauflinie überzugehen. In der Nut der Heizeinrichtung sind nun mehrere dieser Fadenführerpaare angeordnet. Eine solche Doppelanordnung von jeweils zwei Fadenführern alternierend jeweils an einer der Heizflächen bedeutet, daß der Richtungsgradient nach jedem zweiten Fadenführer sein Vorzeichen wechselt.In a preferred embodiment, there are two each in the thread running direction thread guides lying side by side on a straight line essentially parallel to the heating surfaces and arranged so that the thread one the distance to the groove varies alternately in pairs when sweeping the thread guide has. The one through the two side by side Thread guide formed section of the thread line is in each case, based on the center of the groove of the heating device, facing a heating surface off-center, so that the thread alternately on the two side by side Thread guides facing the heating surface of the groove after leaving this section into an also essentially parallel to the heating surface of the groove of the heating device opposite this heating surface passing section of the thread line. In the Several of these thread guide pairs are now arranged along the heating device. Such a double arrangement of two thread guides alternately in each case on one of the heating surfaces means that the directional gradient after every second thread guide, its sign changes.

Bei einem bevorzugten Ausführungsbeispiel sind die Fadenführer als Einschubplatten bzw. -scheiben ausgebildet, welche sich in die Nut der Heizeinrichtung erstreckende Fadenführungsschlitze aufweisen, die sich ebenfalls parallel zu den Heizflächen erstrecken.In a preferred embodiment, the thread guides are slide-in plates or discs formed, which are in the groove of the heating device have extending thread guide slots, which are also extend parallel to the heating surfaces.

Bei einem weiteren bevorzugten Ausführungsbeispiel sind die Fadenführer als stabartige Elemente ausgebildet, welche an den Heizflächen angeordnet sind und um die der Faden läuft. Die stabartigen Elemente sind nun so angeordnet, daß der Faden stets an der den Heizflächen abgewandten Seite der Fadenführer vorbeiläuft, jedoch der Fadenlauf bei den nebeneinanderliegenden Fadenführern ebenfalls außermittig ist. Vorzugsweise weisen die stabartigen Elemente einen kreisförmigen Querschnitt auf, wobei andere abgerundete Querschnitte wie z.B. ovale Querschnitte, leicht abgeflachte Querschnitte u. ä. möglich sind.In a further preferred embodiment, the thread guides are as rod-like elements formed, which are arranged on the heating surfaces and around which the thread runs. The rod-like elements are now arranged that the thread always on the side facing away from the heating surfaces Thread guide passes, but the thread run with the side by side Thread guides is also off-center. Preferably, the rod-like Elements have a circular cross-section, with others rounded Cross sections such as oval cross-sections, slightly flattened cross-sections u. are possible.

Bei noch einem weiteren bevorzugten Ausführungsbeispiel sind die Fadenführer als an den Heizflächen der Heizeinrichtung befestigte sickenartige Elemente ausgebildet. Vorzugsweise weisen die sickenartigen Elemente einen im wesentlichen halbzylindrischen Querschnitt auf. Vorzugsweise können die sickenartigen Elemente in ihrem Querschnitt auch die Form einer Sinuswelle aufweisen.In yet another preferred embodiment, the thread guides are as bead-like attached to the heating surfaces of the heater Elements trained. The bead-like elements preferably have one essentially semi-cylindrical cross-section. Preferably, the bead-like elements in their cross section also the shape of a sine wave exhibit.

Vorzugsweise sind die Fadenführer in einem gleichen Abstand zueinander angeordnet, so daß die von den jeweils nebeneinanderliegenden beiden Fadenführern gebildeten, im wesentlichen parallel zu den Heizflächen angeordneten Fadenlaufkurvenabschnitte jeweils die gleiche Länge aufweisen, um eine möglichst gleichmäßige Erwärmung des Fadens beim Durchlauf durch die Heizeinrichtung zu gewährleisten.The thread guides are preferably at an equal distance from one another arranged so that the two adjacent to each other Thread guides formed, arranged substantially parallel to the heating surfaces Thread path sections each have the same length, in order to heat the thread as evenly as possible during the passage to ensure by the heater.

Bei noch einem weiteren bevorzugten Ausführungsbeispiel sind jeweils drei Fadenführer außermittig der Nut so angeordnet, daß nur nach jedem dritten der drei Fadenführer eine Vorzeichenänderung des Richtungsgradienten der Fadenlaufkurve auftritt, wobei die Fadenlaufkurve vorzugsweise im wesentlichen einen sinusförmigen Verlauf aufweist.In yet another preferred embodiment, there are three each Thread guide arranged off-center of the groove so that only after every third of the three thread guides a change in the sign of the directional gradient of the Thread running curve occurs, the thread running curve preferably essentially has a sinusoidal shape.

Weitere Vorteile und Anwendungsmöglichkeiten der vorliegenden Erfindung werden nun anhand der beigefügten Zeichnungen nachfolgend detailliert erläutert.Further advantages and possible uses of the present invention are now detailed below with reference to the accompanying drawings explained.

Es zeigen:

Fig. 1
einen Querschnitt durch einen Heizkörper gemäß der Erfindung;
Fig. 2
eine Draufsicht auf den Nutquerschnitt der Heizeinrichtung;
Fig. 3
eine Heizeinrichtung in Vorderansicht;
Fig. 4
eine Heizeinrichtung mit Trägern und Fadenführern in Draufsicht auf die Nut der Heizeinrichtung;
Fig. 5
einen Querschnitt durch eine Heizeinrichtung gemäß einem weiteren Ausführungsbeispiel der Erfindung; und
Fig. 6
eine Draufsicht auf den Nutquerschnitt einer Heizeinrichtung mit sickenförmig angeordneten Fadenführelementen.
Show it:
Fig. 1
a cross section through a radiator according to the invention;
Fig. 2
a plan view of the groove cross section of the heating device;
Fig. 3
a heater in front view;
Fig. 4
a heater with carriers and thread guides in plan view of the groove of the heater;
Fig. 5
a cross section through a heating device according to a further embodiment of the invention; and
Fig. 6
a plan view of the groove cross section of a heating device with bead-arranged thread guide elements.

Fig. 1 zeigt einen Querschnitt durch einen Heizkörper in prinzipieller Anordnung. Die Heizeinrichtung 1, welche eine U-förmig ausgebildete Nut 6 aufweist, ist so aufgebaut, daß in dem U-förmigen Block angeordnete Heizelemente ihre Heizenergie über den Nutgrund 15 sowie die Heizflächen 5 abgeben. In der Nut sind auf scheibenförmigen Trägern 10 vorgesehene Fadenführer 2 angeordnet. Diese Fadenführer 2 sind als Fadenführungsschlitze in die Träger 10 eingearbeitet, wobei sich die Schlitze im wesentlichen parallel zu den Heizflächen 5 und in Richtung auf den Nutgrund 15 erstrecken. Je nach Fadenlaufgeschwindigkeit und vorhandener Heizenergie sowie Fadenmaterial können die Fadenführungsschlitze näher an den Heizflächen oder entfernter von den Heizflächen angeordnet sein. Erfindungsgemäß sind diese Fadenführungsschlitze jedoch stets im Bereich zwischen Mittellinie der Nut 6 und Heizflächen 5 angeordnet. Da ein in den Fadenführungsschlitzen laufender, in Fig. 1 nicht dargestellter Faden an jedem Fadenführer eine Umlenkung erfährt, sind die Umlenkflächen über die Dicke des Trägers 10 abgerundet ausgeführt, um einen möglichst geringen Einfluß auf die Fadenspannung beim Einlaufen des Fadens in den Fadenführungsschlitz auszuüben. Die scheibenförmigen Träger 10, welche im wesentlichen in Laufrichtung des Fadens einen gleichen Abstand zueinander aufweisen, besitzen an ihrer der Heizeinrichtung 1 abgewandten Seite einen trichterförmigen Einlauf zum Erleichtern des Einführens des Fadens in den Fadenführungsschlitz.Fig. 1 shows a cross section through a radiator in principle Arrangement. The heater 1, which has a U-shaped groove 6, is constructed so that arranged in the U-shaped block Heating elements their heating energy via the groove base 15 and the heating surfaces Submit 5. In the groove 10 are provided on disc-shaped carriers Thread guide 2 arranged. These thread guides 2 are as thread guide slots incorporated into the carrier 10, the slots being essentially parallel to the heating surfaces 5 and in the direction of the groove base 15 extend. Depending on the thread speed and the available heating energy as well as thread material, the thread guide slots can be closer to the heating surfaces or be located further away from the heating surfaces. According to the invention however, these thread guide slots are always in the area between Center line of the groove 6 and heating surfaces 5 are arranged. Since one in the thread guide slots running thread, not shown in Fig. 1 on each Thread guides undergo a deflection, the deflection surfaces are over the thickness of the carrier 10 is rounded to minimize the influence on the thread tension when the thread runs into the thread guide slot exercise. The disc-shaped carrier 10, which essentially have the same distance from each other in the running direction of the thread, have a funnel-shaped on their side facing away from the heating device 1 Inlet to facilitate the insertion of the thread into the thread guide slot.

In Fig. 2 ist eine Draufsicht auf den Nutquerschnitt der Heizeinrichtung gezeigt. Aus Gründen der Übersichtlichkeit sind die Heizeinrichtung abschließende Abdeckungen nicht eingezeichnet. Die im wesentlichen gleichmäßig angeordneten Fadenführer 2 sind mit den jeweiligen Fadenführungsschlitzen dargestellt, durch welche der Faden 7 läuft. Die in Fig. 2 links dargestellten ersten beiden Fadenführer weisen Fadenführungsschlitze auf, die einen gleichen Abstand zur Heizfläche 5 aufweisen, so daß sich zwischen diesen beiden Fadenführern ein im wesentlichen paralleler Fadenlauf, d.h. parallel zu der Heizfläche 5, ergibt. Entsprechend der Ablenkung des Fadens beim Einlauf in den ersten Fadenführer und beim Auslauf aus dem zweiten Fadenführer sind die Fadenführungsschlitze abgerundet. Der Faden läuft durch die Schlitze der nächsten beiden Fadenführer, deren Fadenführungsschlitze so angeordnet sind, daß der im wesentlichen zu der Heizfläche 5 parallele Verlauf des Fadens 7 näher an der Heizfläche 5 angeordnet ist, welche der dem Faden 7 zugewandten Heizfläche zwischen dem ersten und dem zweiten Fadenführer entgegengesetzt ist.2 is a plan view of the groove cross section of the heating device shown. For reasons of clarity, the heating devices are final Covers not shown. The essentially even arranged thread guide 2 are with the respective thread guide slots shown through which the thread 7 runs. The left in Fig. 2 The first two thread guides shown have thread guide slots which have an equal distance from the heating surface 5, so that between these two thread guides have a substantially parallel thread path, i.e. parallel to the heating surface 5. According to the deflection of the thread when entering the first thread guide and when leaving the second Thread guides, the thread guide slots are rounded. The thread runs through the slots of the next two thread guides, their thread guide slots are arranged so that the heating surface 5 parallel course of the thread 7 is arranged closer to the heating surface 5, which of the heating surface facing the thread 7 between the first and the second thread guide is opposite.

Gegenüber einer im Stand der Technik bekannten Zickzack-Linie des Fadenlaufs bzw. der Fadenlaufkurve weist diese erfindungsgemäße Fadenführung den Vorteil auf, daß eine geringere Fadenumschlingung am Fadenführer und damit eine reduzierte Reibung vorhanden ist. Dieser Vorteil wird dadurch erreicht, daß der Faden z.B. an jedem zweiten oder dritten Fadenführer um den Betrag der Überdeckung der Fadenführer bzgl. der Mittelebene der Nut umgelenkt wird.Compared to a zigzag line of the thread run known in the prior art or the thread running curve has this thread guide according to the invention the advantage that a lower thread wrap on the thread guide and so that there is reduced friction. This will benefit achieves that the thread e.g. on every second or third thread guide the amount of coverage of the thread guides with respect to the median plane of the groove is redirected.

Durch die Tatsache, daß bei paarweiser Anordnung stets zwei benachbarte Fadenführer auf einer Geraden parallel zur Nut liegen, wird der im Stand der Technik bekannte zickzack-förmige Fadenverlauf jeweils durch gerade Teilstücke unterbrochen. Der Umschlingungswinkel am Fadenführer ist im Vergleich zu dem Umschlingungswinkel bei Ausführung des Standes der Technik nur halb so groß (bei Dreifachanordnung entsprechend 1/3 usw.). Die Überlappung der Fadenführer über die Mittelebene der Nut richtet sich nach den Verfahrensparametern bzw. Fadenmaterialien bzw. der installierten Heizleistung.Due to the fact that, when arranged in pairs, there are always two neighboring ones Thread guide lying on a straight line parallel to the groove, it will stand the zigzag-shaped thread course known in the art, in each case by straight Parts interrupted. The wrap angle on the thread guide is in Comparison to the wrap angle when executing the state of the Technology only half the size (with triple arrangement corresponding to 1/3 etc.). The overlap of the thread guides over the median plane of the groove is directed according to the process parameters or thread materials or the installed Heating capacity.

Durch die um ca. 50 % reduzierte Kontaktzone zwischen Faden und Fadenführer bei Doppelanordnung ergibt sich insbesondere bei kleinen Überlappungen und engen Toleranzen ein positiver Einfluß auf den Fadenlauf. Die Länge der Heizeinrichtung, d.h. die Länge des Fadens, welche der Heizeinrichtung zum Zwecke des Aufheizens gesetzt ist, wird entsprechend den Prozeßparametern, insbesondere entsprechend der Fadenart bestimmt. Fadendicke, Fadengeschwindigkeit, Temperatur des Heizkörpers, Dimensionierung der Heizeinrichtung u.s.w. sind dafür relevante Parameter. Nimmt man z.B. an, daß die Gesamtlänge 1 Meter sein soll, so ergibt sich für jeden einzelnen Heizkörper, von denen mehrere hintereinander in der Gesamtanlage angeordnet sein können, eine Länge von 500 mm.Thanks to the contact zone between thread and thread guide, which is reduced by approx. 50% in the case of a double arrangement, this results in particular with small overlaps and narrow tolerances have a positive influence on the thread run. The Length of the heater, i.e. the length of the thread, which of the heater is set for the purpose of heating, according to the Process parameters, especially determined according to the type of thread. Thread thickness, Thread speed, temperature of the radiator, dimensioning the heater etc. are relevant parameters for this. Take e.g. assuming that the total length should be 1 meter, results for each individual Radiators, several of which are in a row in the overall system can be arranged, a length of 500 mm.

Es hat sich herausgestellt, daß auf dem in Fadenlaufrichtung durch die Anlage ersten Heizkörper bzw. der ersten Heizeinrichtung vier und auf der zweiten Heizeinrichtung fünf Fadenführer zweckmäßig sind. Bei einer derartigen Gestaltung liegt der Abstand der einzelnen Fadenführer im Bereich von ca. 125mm, wobei dieser Wert selbstverständlich prozeß- und materialparameterabhängig ist.It has been found that on the in the direction of the thread through the Plant first radiator or the first heater four and on the second heater five thread guides are appropriate. With such a Design, the distance between the individual thread guides lies in the area of approx. 125mm, whereby this value depends of course on process and material parameters is.

Fig. 3 zeigt eine Heizeinrichtung in Vorderansicht in Form eines senkrechten Schnittes. Die als U-förmige Schiene ausgebildete Heizeinrichtung 1 begrenzt in ihrem Innern eine Nut mit den Heizflächen 5 und dem Nutgrund 15. In der eigentlichen Heizeinrichtung 1 ist ein Widerstandsheizer 14 angeordnet, über welchen die Energiezufuhr in das Innere der Nut realisiert wird. In der Längsnut 6 ist eine Baueinheit vorgesehen, welche vorzugsweise durch Klammern befestigt ist. Diese Baueinheit besteht aus einem bandförmigen Träger 10 und seitlich daran angebrachten Fadenführern 3. Die Fadenführer sind beidseits zueinander versetzt, und zwar paarweise mit gleichen Abständen angeordnet. Der Träger 10 wird durch Einklemmen der Baueinheit so verformt, daß er mit jeweils zwei jeweils gegenüberliegenden aufeinanderfolgenden Paaren von Fadenführern in Berührung steht, so daß sich die Baueinheit unter den elastischen Klemmkräften in der Nut einpaßt. Die Fadenführer 3 werden durch Kappen 17 in der Nut 6 gehalten. Diese Kappen 17 sind C-förmig ausgebildet und ergreifen die obere Längskante jeweils einer Flanke der Nut 6 und greifen dabei selbst in kleine Längsnüten ein, die beidseits der oberen Längskanten in den Seitenwandungen der Nut, d.h. den Heizflächen 5 eingebracht sind.Fig. 3 shows a heater in front view in the form of a vertical Section. The heating device 1 designed as a U-shaped rail delimits a groove inside with the heating surfaces 5 and the groove bottom 15. In the actual heating device 1 is a resistance heater 14 arranged, via which the energy supply into the interior of the groove is realized becomes. In the longitudinal groove 6, a structural unit is provided, which is preferably is attached by brackets. This unit consists of one band-shaped carrier 10 and laterally attached thread guides 3. Die Thread guides are staggered on both sides, in pairs arranged at equal intervals. The carrier 10 is by clamping the Unit deformed so that it has two opposite each successive pairs of thread guides is in contact, so that the unit fits under the elastic clamping forces in the groove. The thread guides 3 are held in the groove 6 by caps 17. This Caps 17 are C-shaped and grip the upper longitudinal edge one flank of the groove 6 each and engage even in small longitudinal grooves a, which is on both sides of the upper longitudinal edges in the side walls of the Groove, i.e. the heating surfaces 5 are introduced.

Fig. 4 stellt eine Heizeinrichtung mit Trägern und Fadenführern in Draufsicht auf die Nut 6 der Heizeinrichtung 1 dar. In der langgestreckten, U-förmigen Nut ist der Träger 10 mit den Fadenführern 9 eingesetzt. Beim Einsetzen des Trägers 10 mit den Fadenführern 9, welche als stabförmige Elemente mit kreisquerschnitt ausgebildet sind, wird der Träger 10 in eine Linienführung gezwungen, die der in Fig. 4 dargestellten entspricht. D.h., der Träger berührt jeweils zwei benachbarte Fadenführer, welche in Fadenlaufrichtung nacheinander abwechselnd paarweise auf gegenüberliegenden Seiten der Heizflächen 5 der Nut 6 angeordnet sind. Die einzelnen Fadenführer 9 stützen sich an den Seitenwandungen, d.h. den Heizflächen der Nut, ab. Bezüglich der Materialauswahl ist es wichtig, daß das Band, welches den Träger 10 bildet, elastisch ist, und auch bei der vorgesehenen Erwärmung auf mehr als 400°C elastisch bleibt. Fig. 4 shows a heating device with carriers and thread guides in plan view on the groove 6 of the heating device 1. In the elongated, U-shaped The carrier 10 with the thread guides 9 is inserted in the groove. At the Inserting the carrier 10 with the thread guides 9, which are rod-shaped Elements are formed with a circular cross section, the carrier 10 is in a Forced lines that correspond to that shown in Fig. 4. that is, the carrier touches two adjacent thread guides, which are in the thread running direction one after the other alternately in pairs on opposite Sides of the heating surfaces 5 of the groove 6 are arranged. The individual thread guides 9 are supported on the side walls, i.e. the heating surfaces of the Groove, off. Regarding the choice of material, it is important that the tape, which forms the carrier 10, is elastic, and also in the intended Heating to more than 400 ° C remains elastic.

In Fig. 5 ist ein weiteres Ausführungsbeispiel einer Heizeinrichtung gemäß der Erfindung als Querschnitt durch die Heizeinrichtung dargestellt. Die Heizeinrichtung 1 ist wiederum als langgestreckter, U-förmiger Körper ausgebildet, welcher in seinem Innern Widerstandsheizer 14 aufweist, welche in entsprechenden Bohrungen der Heizeinrichtung 1 eingebracht sind und welche der Erwärmung des in dem U-förmigen Heizkörpers ausgebildeten Nut 6 dienen. In der Nut 6 sind zwei Metallbänder 13 eingeschoben. Hierbei stützen sich die Metallbänder 13 an den gegenüberliegenden Seitenwandungen, d.h. Heizflächen 5, der Längsnut ab. Die als Sicken ausgebildeten Erhebungen dienen als Fadenführer und sind wiederum paarweise gegenüberliegenden Seitenwandungen zugewandt. Die beiden Metallbänder 13 sind über Stege 8 im Bereich des Nutgrundes 15 miteinander verbunden, so daß zum einen die Position der Metallbänder 13 zueinander fixiert ist und zum anderen verhindert wird, daß der Faden die Wand der Nut 6, d.h. den Nutgrund 15 berührt. Die Stege 8 sind deshalb vorzugsweise mit einem Abstand zum Nutgrund 15 angeordnet. Die Sicken sind so ausgebildet, daß auf der offenen Seite der U-förmigen Nut 6 ein V-förmiger Einschnitt durch die Anschrägung 18 entsteht, welcher ebenfalls das Einlegen des Fadens erleichtert.5 shows a further exemplary embodiment of a heating device according to FIG the invention shown as a cross section through the heating device. The Heating device 1 is in turn an elongated, U-shaped body formed, which has in its interior resistance heater 14, which are introduced into corresponding bores of the heating device 1 and which is the heating of the formed in the U-shaped radiator Serve groove 6. Two metal strips 13 are inserted into the groove 6. Here, the metal strips 13 are supported on the opposite side walls, i.e. Heating surfaces 5, the longitudinal groove. The trained as beads Elevations serve as thread guides and are in turn opposite one another Side walls facing. The two metal strips 13 are Connected to one another via webs 8 in the region of the groove base 15, so that on the one hand the position of the metal strips 13 is fixed to each other and on the other others is prevented from threading the wall of the groove 6, i.e. the Nutgrund 15 touched. The webs 8 are therefore preferably with a Distance to the groove base 15 is arranged. The beads are designed so that on the open side of the U-shaped groove 6 through a V-shaped incision the bevel 18 is created, which also the insertion of the thread facilitated.

Fig. 6 zeigt ein weiteres Ausführungsbeispiel gemäß der Erfindung in Form einer Draufsicht auf den Nutquerschnitt. Als Fadenführer 11 dienen sickenförmige Erhebungen, welche jeweils paarweise in Fadenlaufrichtung hintereinander an gegenüberliegenden Seiten der Nut 6 angeordnet sind, so daß sich zwischen den beiden sickenförmigen Erhebungen der Faden im wesentlichen parallel zu den Heizflächen 5 erstreckt, wobei die Höhe der Sicken so ausgebildet ist, daß sie über die Mittelebene der Nut 6 reichen. Im Bereich des Nutgrundes 15 sind Stege 12 zum Halten der Fadenführer 11 an den jeweiligen Heizflächen 5 vorgesehen. Fig. 6 shows another embodiment according to the invention in the form a top view of the groove cross section. Bead-shaped serve as thread guide 11 Elevations, each in pairs in the direction of the thread one behind the other are arranged on opposite sides of the groove 6 so that essentially between the two bead-shaped elevations of the thread extends parallel to the heating surfaces 5, the height of the beads so is formed that they extend over the central plane of the groove 6. In the area of the groove base 15 are webs 12 for holding the thread guide 11 on the respective heating surfaces 5 provided.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Heizeinrichtungheater
22
Fadenführerthread guides
33
Fadenführerthread guides
44
Fadenführerthread guides
55
Heizflächenheating surfaces
66
Nutgroove
77
Fadenthread
88th
Stegweb
99
Fadenführerthread guides
1010
Trägercarrier
1111
Fadenführerthread guides
1212
Stegweb
1313
Metallbandmetal band
1414
Widerstandsheizerresistance heater
1515
Nutgrundgroove base
1616
Umlenkflächendeflecting
1717
Kappencut
1818
Anschrägungbevel

Claims (11)

  1. Heating apparatus (1) for heating an advancing yarn (7), the apparatus comprising an elongate heater with heating surfaces (5) in the form of a groove (6), the groove accommodating a plurality of yarn guides (3, 4) which are positioned along a line with zigzag changes in direction, the line extending over a surface, which is spaced apart from the heating surfaces (5) over the entire length of the heating apparatus, characterized in that the number of directions changes of curvature is smaller than the number of yarn guides (3, 4).
  2. Heating apparatus as in claim 1, characterized in that the line undergoes a direction change of curvature respectively before or after at least two yarn guides (3, 4) one following directly the other.
  3. Heating apparatus as in claim 1 or 2, characterized in that two yarn guides (3, 4) each positioned side by side in the direction of the advancing yarn are arranged along a line substantially parallel to the heating surfaces (5) and such that the yarn (7), as it passes over the yarn guides (3, 4) assumes a distance from the groove that alternately varies in pairs.
  4. Heating apparatus as in claim 1, 2, or 3, wherein the yarn guides (3, 4) are mounted in the groove (6) and have yarn insertion slots (2) extending parallel to the heating surfaces (5).
  5. Heating apparatus as in claim 1, 2, or 3, wherein the yarn guides (3, 4) are designed and constructed as rod-shaped elements (9, 10) mounted on the heating surfaces (5).
  6. Heating apparatus as in claim 5, wherein the rod-shaped elements (9, 10) have a circular cross section.
  7. Heating apparatus as in claim 1, 2, or 3, wherein the yarn guides (3, 4) are designed and constructed as corrugated elements (11, 12) mounted on the heating surfaces (5).
  8. Heating apparatus as in claim 7, wherein the corrugated elements (11, 12) have a substantially semicylindrical cross section.
  9. Heating apparatus as in one of claims 1-8, wherein the parallel distance of the yarn (7) being guided by the yarn guides (3, 4) that extend in pairs along a straight-line is always smaller than half the groove width.
  10. Heating apparatus as in claim 1, characterized in that the yarn guides are arranged such that the curve of the advancing yarn is substantially sinusoidal, and that they are further arranged such that the direction gradient of the curve formed by the advancing yarn changes signs each time after a constant number of yarn guides successively arranged in the direction of the advancing yarn.
  11. Heating apparatus as in one of claims 1-10, wherein the yarn guides are arranged equidistantly.
EP96109591A 1995-06-27 1996-06-14 Heating apparatus for heating a moving yarn Expired - Lifetime EP0751245B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19523356 1995-06-27
DE19523356 1995-06-27

Publications (3)

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EP0751245A2 EP0751245A2 (en) 1997-01-02
EP0751245A3 EP0751245A3 (en) 1999-07-21
EP0751245B1 true EP0751245B1 (en) 2002-11-27

Family

ID=7765372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96109591A Expired - Lifetime EP0751245B1 (en) 1995-06-27 1996-06-14 Heating apparatus for heating a moving yarn

Country Status (6)

Country Link
US (1) US5797256A (en)
EP (1) EP0751245B1 (en)
KR (1) KR100396157B1 (en)
CN (1) CN1066219C (en)
DE (1) DE59609899D1 (en)
TW (1) TW381129B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645668A1 (en) * 2004-10-08 2006-04-12 Schärer Schweiter Mettler AG Yarn heater and its use
DE102019003801A1 (en) * 2019-05-28 2020-12-03 Oerlikon Textile Gmbh & Co. Kg Heating device for heating a running thread

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990670A (en) * 1957-03-07 1961-07-04 North American Rayon Corp Yarn crimping and texturing apparatus
GB1275270A (en) * 1968-07-23 1972-05-24 Teijin Ltd Apparatus for heating synthetic filaments
DE2534598A1 (en) * 1975-08-02 1977-02-10 Karl Bous Fixing, stretching, bulking, dyeing, yarns - using the processing medium to lift and ease their passage around guides
FR2451415A1 (en) * 1979-03-15 1980-10-10 Astin France Assist Tech Indle Device for controlled heating of surfaces - of continuously fed paper or cardboard sheet
US4567721A (en) * 1983-11-01 1986-02-04 Teijin Limited Method for producing textured yarn
DE59007713D1 (en) * 1989-08-09 1994-12-22 Barmag Barmer Maschf Heating device.
US5138829A (en) * 1990-02-10 1992-08-18 Teijin Seiki Co., Ltd. Apparatus for heat treating a synthetic yarn
JP3164180B2 (en) * 1992-07-24 2001-05-08 帝人製機株式会社 Heat treatment equipment for synthetic fiber yarn
DE4318675A1 (en) * 1992-06-06 1993-12-09 Barmag Barmer Maschf Metallic heater rail giving uniformly distributed heat - has ceramic inserts with groove for yarn which passes rapidly over electric heater element
JP2598215B2 (en) * 1993-03-31 1997-04-09 帝人製機株式会社 Cooling device for false twisting machine
EP0659221B1 (en) * 1993-06-15 1998-02-04 B a r m a g AG Heating rail
DE4423202C2 (en) * 1993-07-17 1996-05-02 Barmag Barmer Maschf Heating device for heating a running thread
EP0691429B1 (en) * 1994-06-22 1999-08-04 B a r m a g AG Heating rail for a running synthetic yarn
DE59509332D1 (en) * 1994-10-07 2001-07-19 Barmag Barmer Maschf Heating device with exchangeable thread guides
DE59601849D1 (en) * 1995-03-10 1999-06-17 Barmag Barmer Maschf Heating device for heating a running thread

Also Published As

Publication number Publication date
KR970001636A (en) 1997-01-24
CN1066219C (en) 2001-05-23
EP0751245A3 (en) 1999-07-21
KR100396157B1 (en) 2003-11-28
CN1144854A (en) 1997-03-12
DE59609899D1 (en) 2003-01-09
US5797256A (en) 1998-08-25
TW381129B (en) 2000-02-01
EP0751245A2 (en) 1997-01-02

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