EP0731197B1 - Heater for heating moving yarns - Google Patents

Heater for heating moving yarns Download PDF

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Publication number
EP0731197B1
EP0731197B1 EP96102829A EP96102829A EP0731197B1 EP 0731197 B1 EP0731197 B1 EP 0731197B1 EP 96102829 A EP96102829 A EP 96102829A EP 96102829 A EP96102829 A EP 96102829A EP 0731197 B1 EP0731197 B1 EP 0731197B1
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EP
European Patent Office
Prior art keywords
heating apparatus
yarn
metal strips
thread
yarn guides
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Expired - Lifetime
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EP96102829A
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German (de)
French (fr)
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EP0731197A1 (en
Inventor
Siegfried Morhenne
Peter Berger
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Oerlikon Barmag AG
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Barmag AG
Barmag Barmer Maschinenfabrik AG
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating 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 thread with the features of the preamble of claim 1.
  • a Thread is guided.
  • the thread is guided in a heatable longitudinal groove, the thread target temperature in the range between 150 ° C and 230 ° C.
  • the heater is operated at a temperature which is significantly above 300 ° C.
  • One heater can have several Have grooves, in each of which a thread is guided.
  • a heating device is known from EP 0 412 429 B1 heated longitudinal groove in which the thread along a zigzag Line is guided.
  • the zigzag line is through several thread guides stretched, at each turning point of the line a thread guide is arranged.
  • the thread guides are individual Crosspieces that are parallel to each other at the same distance in the longitudinal groove are used.
  • thread guides become dirty after some time due to inorganic deposits.
  • the thread guides must be dismantled and cleaned so that the deviation of the thread guide from the nominal value does not become excessive.
  • each thread guide must be replaced individually, which is time-consuming.
  • the present invention is based on the object, the known Heating device so that the number of thread guide components minimized and the handling for changing the thread guide is simplified.
  • This task is accomplished by a heater with the characteristics of the Claim 1 solved.
  • the heating device according to the invention is characterized in that the thread guides as elevations on two opposing metal strips are molded. Since the surveys take turns on one and attached to the other metal band and the bumps Protruding beyond the center plane of the groove, the thread is zigzag-shaped Lines run.
  • the metal strips can be made by hot or cold forming be so that the position and dimensions of the surveys of a Shape or tool are dependent and very high among themselves Show accuracy. So that the wrap angles and the Friction at each point of deflection of the thread is the same thing the smooth running of the thread favors.
  • the metal bands are supported the opposite side walls of the longitudinal groove and are positioned to each other so that the opposite thread guides stand offset from each other.
  • both metal strips can easily be pulled out of the longitudinal groove and then pushed in again. So that the thread assumes an evenly smooth running during the entire heating section, the thread guides are to be arranged according to claim 2.
  • the design of the heating device according to claim 3 is special advantageous if the thread is to be heated up very quickly.
  • the arrangement of the elevations on the metal strips can also be done in this way take place that alternately two successive surveys are formed on one and the other metal band.
  • the wrap angle per thread guide is advantageous reduced by 50%.
  • the embodiment according to claim 5 is due to the low manufacturing costs the sheet metal strip is an advantage. To make the beads simple bending or stamping tools can be used.
  • the metal strips are used to position the opposite thread guides connected to each other by means of several webs.
  • the webs are advantageously arranged near the bottom of the groove, so that prevents is that the thread in contact with the heating surface of the groove base occurs.
  • the opposite thread guides are formed on a profiled sheet and the position of the thread guides relative to one another is determined exclusively by the bending or embossing tool.
  • the embodiment according to claim 8 shows an inexpensive alternative to obtain a shaped profile from a flat sheet metal strip. The incisions parallel to the fold line allow the formation of the beads up to the groove base in the folded state. It also prevents the bead from running into the fold line, which would greatly hinder the subsequent deformation.
  • the ends of the thread guides will be on the side of the thread insert according to claim 9 preferably carried out so that they to the groove center plane are flattened out. This results in a V-shape in the longitudinal direction or circular infeed, which makes inserting the thread easy Way. If the thread guide is in the form of a bead, so is the bead starting from the top of the longitudinal groove with a introduced increasing depth. There is a profile in the longitudinal groove V-shaped opening towards the insertion side.
  • the embodiments according to claims 10 and 11 show an advantageous embodiment of the thread guide in the side walls, so that a favorable wrap angle and a small friction surface are established.
  • the shape of the thread guide must be precisely defined beforehand, since it significantly influences the running properties of the thread.
  • threads made of certain types of polymer such as. B. Poyamid
  • This treatment can advantageously be carried out with a heating device according to claims 12 and 13.
  • the embodiment according to claims 14 and 15 prevents the thread from touching the bottom of the groove and thus not being damaged due to excessive heat load.
  • the limitation of the base bead by incisions parallel to the fold line is advantageous.
  • the metal band on the inside at least in the Have a hard material coating in the area of the thread guides.
  • the metal band or the profile with the molded thread guides be nitrided or borated.
  • the layer thickness is 10 to 30 ⁇ m. It surface hardness of 1,000 HV to 2,000 HV can be achieved.
  • These relatively thin layers of 6 to 9 ⁇ m are applied by the PVD or CVD process.
  • the surface hardness is in the range> 3,500 HV. It is at this point expressly said that the heating device according to the invention is not only limited to the types of coating mentioned, but also all usual types of coating could be considered.
  • the design of the heating device according to claim 19 and 20 offers the advantage that several heating zones are formed with different thread guides. This enables additional temperature and thread quality optimizations. According to claim 21, the heating zones of the heating device can be flexibly combined.
  • a plurality of thread guides are formed as elevation 6.1 on a metal strip 3 in the longitudinal direction on one side of the metal strip 3.
  • the elevations 6.1 preferably have a part-circular or part-elliptical cross-section and, as can be seen in FIG. 1, are of the same size.
  • the elevations 6.1 are cylindrical, so that a curved thread guide surface 20 is formed.
  • a bevel 10 is formed on one end of the thread guide or elevations 6.1. The bevel 10 is inclined so that it forms an acute angle with the metal band. The bevel is on the side from which the thread is inserted.
  • the shaping of the metal strips 3 can be produced from solid material by means of cold or hot forming or by means of machining.
  • the width of the metal strip 3, which results from the depth of the elevation 6.1 and the sheet thickness, must be somewhat larger than half the width of the longitudinal groove 2, which is formed in a heating device 1.
  • a heating device 1 which has a longitudinal groove 2 arranged.
  • Two metal strips 3.1 and 3.2 are inserted into the longitudinal groove 2.
  • the metal strips 3.1 and 3.2 are supported on the opposite side walls 4 and 5 of the longitudinal groove 2.
  • the elevations 6.1 of the metal strip 3.1 and the elevations 6.2 of the metal strip 3.2 - here designed as beads 21 - are arranged opposite one another, the depth of the elevations 6.1 and the depth of the elevation 6.2 reaching beyond the central plane of the groove.
  • the surfaces of the elevations form the thread guide surfaces 20.
  • the inserted thread 7 is deflected to the thread guide 6 in such a way that a zigzag-shaped line is established.
  • the metal strips 3.1 and 3.2 according to Fig. 2.1 and 2.2 are as sheet metal strips executed. Beads 21 are stamped into the sheet metal strip.
  • the two Metal strips 3.1 and 3.2 are interconnected via the webs 8 in the groove base 9 connected so that the position of the metal strips 3.1 and 3.2 is fixed to each other.
  • the webs 8 are preferably at a distance to the groove base 9 between the two metal strips 3.1 and 3.2 attached so that the thread 7 not with the groove bottom 9 of the heater 1 comes into contact.
  • Fig. 2.2 it is shown that the metal strips 3.1 and 3.2 end with a raised portion 6.1 and 6.2 on the insertion side in a bevel 10.
  • the bevel 10 is inclined towards the center of the groove, so that a V-shaped or circular inlet 11 is obtained, which facilitates the insertion of the thread 7.
  • the embodiment according to Fig. 3.1 and 3.2 consists of a profile 14 or a deformed sheet metal strip, the thread guide 6 as beads 21 alternately on both sides of the longitudinal center on the side flanks 14.1 and 14.2 are embossed on one and the other side and the Guide the thread in a zigzag shape along the longitudinal groove 2.
  • the profile 14 has a cross section that corresponds to the cross section of the Longitudinal groove 2 corresponds.
  • the beads 21 are designed so that the depth the bead 21 starting from the top of the longitudinal groove 2 to her the maximum depth required for thread guidance increases.
  • Out Fig.3.2 can be seen that this creates a bevel 10 and thus a V-shaped inlet 11 is formed, which is also the insertion of the thread relieved.
  • the surrounds 12 have a part-circular or part-elliptical cross section. There are but other cross-sections are also possible.
  • Fig. 4.1 a profile with the side walls 14.1 and 14.2 is shown at which alternately two consecutive beads 21 in the Sidewalls are embossed.
  • This arrangement of the thread guides is achieved that the loop of the thread with the same number of Thread guides compared to the heating device according to Fig. 3.1 by 50% can be reduced.
  • this heater is after Fig. 4.1 the distance between opposite thread guides 6 executed smaller at the beginning of the heating section than in the wider Course of the heating section. This creates an irregular zigzag Thread course. Especially in the beginning the short leads Zigzag for rapid heating of the thread because of the thread air jacket carried is stripped several times in quick succession and in addition, the thread is quickly calmed in its course.
  • the thread guide arrangement has at the beginning a low thread wrap per Thread guide allows to then in a regular zigzag course alternating with a thread guide.
  • the Thread guide embossed again as beads 21.
  • the profile 14 is preferably made from a flat sheet metal strip 15.
  • the sheet metal strip 15, as shown in Fig. 5.1 is folded along two fold lines 18 to a desired profile.
  • the beads 21 and the bottom beads 12 are previously introduced into the sheet metal strip 15 by means of a bending punch. To limit the beads 21 and the bottom beads 12 towards the fold line 18, the incisions 16 and 17 are produced before the deformation.
  • FIG. 6 shows a heating device with profiles 14 and 19 lying one behind the other in the longitudinal direction of the longitudinal groove 2.
  • the metal strips are formed by the side flanks 14.1, 14.2 and 19.1, 19.2 of the profiles 14 and 19.
  • the beads 21.1 are embossed in the side flanks 14.1 and 14.2 and the beads 21.2 in the side flanks 19.1 and 19.2.
  • the beads 21.1 and 21.2 all have the same depths. The distances between the beads 21.1 on the side flanks 14.1 and 14.2 and the distances between the beads 21.2 on the side flanks 19.1 and 19.2 are not the same, so that the thread is guided differently in the heating zones of the profiles 14 and 19.
  • the 7 again shows a profile inserted into the longitudinal groove 2 with the side flanks 14.1 and 14.2, which are supported on the side walls 4 and 5.
  • the beads 22 are formed in the side flanks 14.1 and 14.2.
  • the beads 22 have a rectangular cross section, which have the guide surface 23 formed on their long side.
  • the beads 22 penetrate the central plane of the longitudinal groove 2, so that the thread 7 is guided in a zigzag shape along the longitudinal groove 2.
  • the thread 7 rests on the guide surface 23, so that a very there is a large contact area. With this heating device, it is possible to heat the thread by contact.
  • the heating devices 1 shown in Fig. 2.1 to 6 are elongated Rails shown.
  • the longitudinal groove 2 is heated by a resistance heater 13.
  • the resistance heater 13 is trained as a rod. This rod is embedded in a hole, which is introduced into the base plate of the heating device in the longitudinal direction. To avoid heat loss, the longitudinal groove 2 is in operation, after the thread has been inserted, closed with a lid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • General Induction Heating (AREA)

Description

Die Erfindung bezieht sich auf eine Heizeinrichtung zum Erhitzen eines laufenden Fadens mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a heating device for heating a running thread with the features of the preamble of claim 1.

Insbesondere zum Kräuseln synthetischer Fäden in einer Falschzwirn-Kräuselmaschine werden Heizeinrichtungen vorgesehen, durch die ein Faden geführt wird. Der Faden wird in einer beheizbaren Längsnut geführt, wobei die Fadenzieltemperatur im Bereich zwischen 150°C und 230°C liegt. Die Heizeinrichtung wird mit einer Temperatur betrieben, die wesentlich über 300°C liegt. Eine Heizeinrichtung kann mehrere Nuten aufweisen, in denen jeweils ein Faden geführt wird.Especially for crimping synthetic threads in a false twist crimping machine heaters are provided through which a Thread is guided. The thread is guided in a heatable longitudinal groove, the thread target temperature in the range between 150 ° C and 230 ° C. The heater is operated at a temperature which is significantly above 300 ° C. One heater can have several Have grooves, in each of which a thread is guided.

Durch die EP 0 412 429 B1 ist eine Heizeinrichtung bekannt, die einen beheizbaren Längsnut aufweist, in dem der Faden entlang einer zickzackförmigen Linie geführt wird. Die zickzackförmige Linie wird durch mehrere Fadenführer aufgespannt, wobei an jedem Wendepunkt der Linie ein Fadenführer angeordnet ist. Die Fadenführer sind hierbei einzelne Stege, die parallel zueinander im gleichen Abstand in der Längsnut eingesetzt sind.A heating device is known from EP 0 412 429 B1 heated longitudinal groove in which the thread along a zigzag Line is guided. The zigzag line is through several thread guides stretched, at each turning point of the line a thread guide is arranged. The thread guides are individual Crosspieces that are parallel to each other at the same distance in the longitudinal groove are used.

Es hat sich gezeigt, daß die Fadenführer im Betrieb nach geraumer Zeit durch anorganische Ablagerungen verschmutzen. Um die Abweichung der Fadenführung vom Sollwert nicht unzulässig größer werden zu lassen, müssen die Fadenführer demontiert und gereinigt werden.
Bei der bekannten Heizeinrichtung muß jeder Fadenführer einzelnd ausgewechselt werden, was zeitaufwendig ist.It has been shown that the thread guides become dirty after some time due to inorganic deposits. The thread guides must be dismantled and cleaned so that the deviation of the thread guide from the nominal value does not become excessive.
In the known heating device, each thread guide must be replaced individually, which is time-consuming.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, die bekannte Heizeinrichtung so weiterzubilden, daß die Anzahl der Fadenführerbauteile minimiert und die Handhabung zum Wechseln der Fadenführer vereinfacht wird.The present invention is based on the object, the known Heating device so that the number of thread guide components minimized and the handling for changing the thread guide is simplified.

Diese Aufgabe wird durch eine Heizeinrichtung mit den merkmalen des Anspruchs 1 gelöst.This task is accomplished by a heater with the characteristics of the Claim 1 solved.

Die erfindungsgenmäße Heizeinrichtung zeichnet sich dadurch aus, daß die Fadenführer als Erhebungen an zwei sich gegenüberliegende Metallbändern angeformt sind. Da die Erhebungen abwechselnd an dem einen und an dem anderen Metallband angebracht sind und die Erhebungen über die Nutmittelebene ragen, wird der Faden in einem zickzackförmigen Linienverlauf geführt.The heating device according to the invention is characterized in that the thread guides as elevations on two opposing metal strips are molded. Since the surveys take turns on one and attached to the other metal band and the bumps Protruding beyond the center plane of the groove, the thread is zigzag-shaped Lines run.

Die Metallbänder können durch Warm- oder Kaltumformung hergestellt werden, so daß die Position und Abmaße der Erhebungen von einer Form oder Werkzeug abhängig sind und untereinander eine sehr hohe Genauigkeit aufweisen. Damit sind die Umschlingungswinkel und die Reibungsverhältnisse an jedem Umlenkpunkt des Fadens gleich groß, was die Laufruhe des Fadens begünstigt. Die Metallbänder stützen sich an den gegenüberliegenden Seitenwandungen der Längsnut ab und sind zueinander so positioniert, daß die gegenüberliegenden Fadenführer versetzt zueinander stehen. The metal strips can be made by hot or cold forming be so that the position and dimensions of the surveys of a Shape or tool are dependent and very high among themselves Show accuracy. So that the wrap angles and the Friction at each point of deflection of the thread is the same thing the smooth running of the thread favors. The metal bands are supported the opposite side walls of the longitudinal groove and are positioned to each other so that the opposite thread guides stand offset from each other.

Zur Reinigung der Fadenführer können beide Metallbänder auf einfache Weise aus der Längsnut herausgezogen und anschließend wieder eingeschoben werden.
Damit der Faden während der gesamten Heizstrecke einen gleichmäßig ruhigen Lauf annimmt, sind die Fadenführer entsprechend Anspruch 2 anzuordnen.To clean the thread guides, both metal strips can easily be pulled out of the longitudinal groove and then pushed in again.
So that the thread assumes an evenly smooth running during the entire heating section, the thread guides are to be arranged according to claim 2.

Die Ausgestaltung der Heizeinrichtung nach Anspruch 3 ist besonders vorteilhaft, wenn der Faden sehr schnell aufgeheizt werden soll. Hierzu sind im ersten Abschnitt der Heizeinrichtung die Fadenführer mit geringem Abstand zueinander angeordnet, so daß der vom Faden mitgeführte Luftmantel bereits zu Beginn nachhaltig abgestreift werden kann. Im weiteren Verlauf der Heizstrecke weisen die Fadenführer dann einen größeren Abstand zueinander auf.The design of the heating device according to claim 3 is special advantageous if the thread is to be heated up very quickly. For this are the thread guides with little in the first section of the heating device Spaced from each other so that the carried by the thread Air jacket can be stripped off sustainably right from the start. in the the thread guide then have a further course of the heating section larger distance from each other.

Die Anordnung der Erhebungen an den Metallbändern kann auch derart erfolgen, daß abwechselnd jeweils zwei hintereinanderliegende Erhebungen an dem einen und an dem anderen Metallband angeformt sind. Durch diese Maßnahme wird der Umschlingungswinkel pro Fadenführer vorteilhaft um 50% reduziert.The arrangement of the elevations on the metal strips can also be done in this way take place that alternately two successive surveys are formed on one and the other metal band. By this measure, the wrap angle per thread guide is advantageous reduced by 50%.

Die Ausgestaltung nach Anspruch 5 ist aufgrund der niedrigen Herstellkosten der Blechstreifen von Vorteil. Zur Herstellung der Sicken können einfache Biege- oder Prägewerkzeuge verwendet werden.The embodiment according to claim 5 is due to the low manufacturing costs the sheet metal strip is an advantage. To make the beads simple bending or stamping tools can be used.

Zur Positionierung der gegenüberliegenden Fadenführer sind die Metalbänder mittels mehrerer Stege miteinander verbunden. Die Stege sind vorteilhaft in der Nähe vom Nutgrund angeordnet, so daß verhindert wird, daß der Faden mit der Heizoberfläche des Nutgrundes in Kontakt tritt. The metal strips are used to position the opposite thread guides connected to each other by means of several webs. The webs are advantageously arranged near the bottom of the groove, so that prevents is that the thread in contact with the heating surface of the groove base occurs.

Bei der Ausführungsform nach Anspruch 7 ist vorteilhaft, daß die gegenüberliegenden Fadenführer an einem Profilblech ausgebildet sind und dadurch die Lage der Fadenführer zueinander ausschließlich vom Biege- oder Prägewerkzeug bestimmt wird. Außerdem kann das Einbringen von Stegen zwischen den Seitenflanken entfallen.
Die Ausführungsform nach Anspruch 8 zeigt eine kostengünstige Alternative, um aus einem flachen Blechstreifen ein geformtes Profil zu erhalten.
Die Einschnitte parallel zur Faltlinie ermöglichen dabei die Ausbildung der Sicken bis zum Nutgrund im gefalteten Zustand. Außerdem wird dadurch verhindert, daß die Sicke bis in die Faltlinie hineinläuft, was die anschließende Verformung stark behindern würde.In the embodiment according to claim 7, it is advantageous that the opposite thread guides are formed on a profiled sheet and the position of the thread guides relative to one another is determined exclusively by the bending or embossing tool. In addition, there is no need to insert webs between the side flanks.
The embodiment according to claim 8 shows an inexpensive alternative to obtain a shaped profile from a flat sheet metal strip.
The incisions parallel to the fold line allow the formation of the beads up to the groove base in the folded state. It also prevents the bead from running into the fold line, which would greatly hinder the subsequent deformation.

Die Enden der Fadenführer auf der Seite der Fadeneinlegung werden gemäß Anspruch 9 bevorzugt so ausgeführt, daß sie zur Nutmittelebene hin abgeflacht sind. Damit ergibt sich in Längsrichtung ein V-förmiger oder kreisrunder Einlauf, was das Einlegen des Fadens auf einfache Weise ermöglicht. Ist der Fadenführer in Form einer Sicke ausgeführt, so wird die Sicke ausgehend von der Oberseite der Längsnut mit einer zunehmenden Tiefe eingebracht. Im Profil der Längsnut ergibt sich eine V-förmige Öffnung zur Einlegeseite hin.The ends of the thread guides will be on the side of the thread insert according to claim 9 preferably carried out so that they to the groove center plane are flattened out. This results in a V-shape in the longitudinal direction or circular infeed, which makes inserting the thread easy Way. If the thread guide is in the form of a bead, so is the bead starting from the top of the longitudinal groove with a introduced increasing depth. There is a profile in the longitudinal groove V-shaped opening towards the insertion side.

Die Ausführunmgsformen nach Ansprüchen 10 und 11 zeigen eine vorteilhafte Ausgestaltung der Fadenführer in den Seitenwänden, so daß sich ein günstiger Umschlingungswinkel sowie eine kleine Reibfläche einstellt.
Die Ausformung der Fadenführer muß zuvor genau definiert sein, da sie die Laufeigenschaften des Fadens wesentlich beeinflußt.The embodiments according to claims 10 and 11 show an advantageous embodiment of the thread guide in the side walls, so that a favorable wrap angle and a small friction surface are established.
The shape of the thread guide must be precisely defined beforehand, since it significantly influences the running properties of the thread.

Es hat sich herausgestellt, daß Fäden aus bestimmten Polymertypen, wie z. B. Poyamid, zur Wärmebehandlung einen hohen Grad an Kontakt mit den Fadenführern haben müssen. Diese Behandlung läßt sich vorteilhaft mit einer Heizeinrichtung nach den Ansprüchen 12 und 13 durchführen.
Die Ausgestaltung nach den Ansprüchen 14 und 15 verhindert, daß der Faden den Nutgrund berührt und damit keine Schädigung aufgrund zu hoher Wärmebelastung erhält. Auch hierbei ist wiederum bei der Herstellung des Profils aus einem flachen Blechstreifen die Eingrenzung der Bodensicke durch parallele Einschnitte zur Faltlinie von Vorteil.It has been found that threads made of certain types of polymer, such as. B. Poyamid, must have a high degree of contact with the thread guides for heat treatment. This treatment can advantageously be carried out with a heating device according to claims 12 and 13.
The embodiment according to claims 14 and 15 prevents the thread from touching the bottom of the groove and thus not being damaged due to excessive heat load. Here, too, when the profile is produced from a flat sheet metal strip, the limitation of the base bead by incisions parallel to the fold line is advantageous.

Um die Verschleißfestigkeit des Fadenführers ausreichend hoch zu gewährleisten, kann das Metallband auf der Innenseite, zumindest im Bereich der Fadenführer eine Hartstoffbeschichtung aufweisen. Hierzu kann das Metalband bzw. das Profil mit den angeformten Fadenführern nitriert oder boriert werden. Die Schichtdicke liegt bei 10 bis 30 µm. Es werden Oberflächenhärten von 1.000 HV bis 2.000 HV erreicht. In Anwendungsfällen, die einen höheren Verschleißschutz erfordern, ist der Einsatz von Fadenführern mit einer Chrom-Nitrid- oder Titan-Nitrid-Beschichtung vorzuziehen. Diese relativ dünnen Schichten von 6 bis 9 µm werden nach dem PVD- oder CVD-Verfahren aufgebracht. Die Oberflächenhärte liegt im Bereich > 3.500 HV. Es sei an dieser Stelle ausdrücklich gesagt, daß sich die erfindungsgemäße Heizeinrichtung nicht nur auf die genannten Beschichtungsarten beschränkt, sondern auch alle üblichen Beschichtungsarten in Frage kommen könnten.In order to ensure the wear resistance of the thread guide is sufficiently high, can the metal band on the inside, at least in the Have a hard material coating in the area of the thread guides. For this can the metal band or the profile with the molded thread guides be nitrided or borated. The layer thickness is 10 to 30 µm. It surface hardness of 1,000 HV to 2,000 HV can be achieved. In Applications that require higher wear protection is the Use of thread guides with a chrome nitride or titanium nitride coating preferable. These relatively thin layers of 6 to 9 µm are applied by the PVD or CVD process. The surface hardness is in the range> 3,500 HV. It is at this point expressly said that the heating device according to the invention is not only limited to the types of coating mentioned, but also all usual types of coating could be considered.

Die Ausgestaltung der Heizeinrichtung nach Anspruch 19 und 20 bietet den Vorteil, daß mehrere Heizzonen mit unterschiedlicher Fadenführung gebildet werden. Damit sind zusätzliche Temperatur- und Fadenqualitätsoptimierungen möglich.
Gemäß Anspruch 21 lassen sich die Heizzonen der Heizeinrichtung flexibel kombinieren. The design of the heating device according to claim 19 and 20 offers the advantage that several heating zones are formed with different thread guides. This enables additional temperature and thread quality optimizations.
According to claim 21, the heating zones of the heating device can be flexibly combined.

Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen näher erläutert. Es zeigen:

Fig.1
ein Metallband mit angeformten Fadenführern
Fig.2.1
schematisch eine Heizeirichtung mit zwei gesickten Blechstreifen in der Draufsicht
Fig.2.2
Querschnitt I-I zur Figur 2.1
Fig.3.1
schematisch eine Heizeinrichtung mit einem gesickten Profil in der Draufsicht
Fig.3.2
Querschnitt II-II zur Figur 3.1
Fig.3.3
Querschnitt III-III zur Figur 3.1
Fig.4.1 und 4.2
schematisch eine Heizeinrichtung mit einem gesickten Profil in der Draufsicht
Fig.5.1
ein ungefalteter Blechstreifen mit Sicken
Fig.5.2
ein gefalteter Blechstreifen (Profil) mit Sicken
Fig. 6
schematisch eine Heizeinrichtung mit zwei hintereinanderliegenden Profilen in der Draufsicht
Fig. 7
schematisch eine Heizeinrichtung mit einem gesickten Profil in der Draufsicht.
The invention is explained in more detail below on the basis of exemplary embodiments. Show it:
Fig. 1
a metal band with molded thread guides
Fig.2.1
schematically shows a heating device with two corrugated metal strips in plan view
Fig.2.2
Cross section II to figure 2.1
Fig.3.1
schematically a heating device with a corrugated profile in plan view
Fig.3.2
Cross section II-II to figure 3.1
Fig.3.3
Cross section III-III to Figure 3.1
Fig. 4.1 and 4.2
schematically a heating device with a corrugated profile in plan view
Fig. 5.1
an unfolded sheet metal strip with beads
Fig.5.2
a folded sheet metal strip (profile) with beads
Fig. 6
schematically a heating device with two successive profiles in plan view
Fig. 7
schematically a heating device with a corrugated profile in plan view.

An einem Metallband 3 sind in Längsrichtung an einer Seite des Metallbandes 3 eine Vielzahl von Fadenführern als Erhebung 6.1 angeformt.
Die Erhebungen 6.1 weisen vorzugsweise einen teilkreis- oder teilellipsenförmigen Querschnitt auf und sind -wie aus Fig.1 ersichtlich- in ihren Abmaßen gleich groß. Im Bereich der Fadenführung sind die Erhebungen 6.1 zylinderförmig ausgebildet, so daß eine gekrümmte Fadenführungsfläche 20 gebildet wird. An einem Ende der Fadenführer bzw. Erhebungen 6.1 ist eine Anschrägung 10 angeformt. Die Anschrägung 10 ist so geneigt, daß sie mit dem Metallband einen spitzen Winkel einschließt. Die Anschrägung befindet sich auf der Seite, von welcher der Faden eingelegt wird.A plurality of thread guides are formed as elevation 6.1 on a metal strip 3 in the longitudinal direction on one side of the metal strip 3.
The elevations 6.1 preferably have a part-circular or part-elliptical cross-section and, as can be seen in FIG. 1, are of the same size. In the area of the thread guide, the elevations 6.1 are cylindrical, so that a curved thread guide surface 20 is formed. A bevel 10 is formed on one end of the thread guide or elevations 6.1. The bevel 10 is inclined so that it forms an acute angle with the metal band. The bevel is on the side from which the thread is inserted.

Die Ausformung der Metallbänder 3 ist mittels einer Kalt- oder Warmumformung bzw. mittels spanender Bearbeitung aus Vollmaterial herstellbar.
Die Breite des Metallbandes 3, die sich aus der Tiefe der Erhebung 6.1 und der Blechdicke ergibt, muß etwas größer sein als die halbe Breite der Längsnut 2, welche in einer Heizeinrichtung 1 ausgebildet ist.The shaping of the metal strips 3 can be produced from solid material by means of cold or hot forming or by means of machining.
The width of the metal strip 3, which results from the depth of the elevation 6.1 and the sheet thickness, must be somewhat larger than half the width of the longitudinal groove 2, which is formed in a heating device 1.

In Fig.2.1 ist eine Heizeinrichtung 1 gezeigt, die eine Längsnut 2 angeordnet hat. In der Längsnut 2 sind zwei Metallbänder 3.1 und 3.2 eingeschoben. Hierbei stützen sich die Metallbänder 3.1 und 3.2 an den gegenüberliegenden Seitenwandungen 4 und 5 der Längsnut 2 ab. Die Erhebungen 6.1 des Metallbandes 3.1 und die Erhebungen 6.2 des Metallbandes 3.2 - hier als Sicken 21 ausgeführt- sind gegenüberliegend versetzt zueinander angeordnet, wobei die Tiefe der Erhebungen 6.1 und die Tiefe der Errhebung 6.2 bis über die Nutmittelebene reicht. Die Oberflächen der Erhebungen bilden die Fadenführungsflächen 20.
Der eingelegte Faden 7 wird an den Fadenführer 6 so umgelenkt, daß sich ein zickzackförmiger Linienverlauf einstellt. In Fig.2.1 a heating device 1 is shown, which has a longitudinal groove 2 arranged. Two metal strips 3.1 and 3.2 are inserted into the longitudinal groove 2. The metal strips 3.1 and 3.2 are supported on the opposite side walls 4 and 5 of the longitudinal groove 2. The elevations 6.1 of the metal strip 3.1 and the elevations 6.2 of the metal strip 3.2 - here designed as beads 21 - are arranged opposite one another, the depth of the elevations 6.1 and the depth of the elevation 6.2 reaching beyond the central plane of the groove. The surfaces of the elevations form the thread guide surfaces 20.
The inserted thread 7 is deflected to the thread guide 6 in such a way that a zigzag-shaped line is established.

Die Metallbänder 3.1 und 3.2 nach Fig.2.1 und 2.2 sind als Blechstreifen ausgeführt. In den Blechstreifen sind Sicken 21 eingeprägt. Die zwei Metallbänder 3.1 und 3.2 sind über die Stege 8 im Nutgrund 9 miteinander verbunden, so daß die Position der Metallbänder 3.1 und 3.2 zueinander fixiert ist. Die Stege 8 werden vorzugsweise mit einem Abstand zum Nutgrund 9 zwischen den zwei Metallbändern 3.1 und 3.2 angebracht, so daß der Faden 7 nicht mit dem Nutgrund 9 der Heizeinrichtung 1 in Berührung kommt.The metal strips 3.1 and 3.2 according to Fig. 2.1 and 2.2 are as sheet metal strips executed. Beads 21 are stamped into the sheet metal strip. The two Metal strips 3.1 and 3.2 are interconnected via the webs 8 in the groove base 9 connected so that the position of the metal strips 3.1 and 3.2 is fixed to each other. The webs 8 are preferably at a distance to the groove base 9 between the two metal strips 3.1 and 3.2 attached so that the thread 7 not with the groove bottom 9 of the heater 1 comes into contact.

In Fig.2.2 ist gezeigt, daß die Metallbänder 3.1 und 3.2 mit ihren Erhebungen 6.1 und 6.2 auf der Einlegseite in einer Anschrägung 10 enden.
Die Anschrägung 10 ist zur Nutmitte hin geneigt, so daß sich ein V-förmiger oder kreisrunder Einlauf 11 einstellt, der das Einlegen des Fadens 7 erleichtert.In Fig. 2.2 it is shown that the metal strips 3.1 and 3.2 end with a raised portion 6.1 and 6.2 on the insertion side in a bevel 10.
The bevel 10 is inclined towards the center of the groove, so that a V-shaped or circular inlet 11 is obtained, which facilitates the insertion of the thread 7.

Die Ausführungsform nach Fig.3.1 und 3.2 besteht aus einem Profil 14 oder einem verformten Blechstreifen, wobei die Fadenführer 6 als Sicken 21 beidseits der Längsmitte an den Seitenflanken 14.1 und 14.2 abwechselnd auf der einen und der anderen Seite eingeprägt sind und den Faden zickzackfömig entlang der Längsnut 2 führen.The embodiment according to Fig. 3.1 and 3.2 consists of a profile 14 or a deformed sheet metal strip, the thread guide 6 as beads 21 alternately on both sides of the longitudinal center on the side flanks 14.1 and 14.2 are embossed on one and the other side and the Guide the thread in a zigzag shape along the longitudinal groove 2.

Das Profil 14 weist einen Querschnitt auf, der dem Querschnitt der Längsnut 2 entspricht. Die Sicken 21 sind so ausgebildet, daß die Tiefe der Sicke 21 ausgehend von der Oberseite der Längsnut 2 bis zu ihrer für die Fadenführung erforderlichen maximalen Tiefe zunimmt. Aus Fig.3.2 ist ersichtlich, daß dadurch eine Anschrägung 10 entsteht und somit ein V-förmiger Einlauf 11 gebildet wird, der ebenfalls das Einlegen des Fadens erleichtert. The profile 14 has a cross section that corresponds to the cross section of the Longitudinal groove 2 corresponds. The beads 21 are designed so that the depth the bead 21 starting from the top of the longitudinal groove 2 to her the maximum depth required for thread guidance increases. Out Fig.3.2 can be seen that this creates a bevel 10 and thus a V-shaped inlet 11 is formed, which is also the insertion of the thread relieved.

Um den Faden vom Nutgrund fernzuhalten, sind zwischen den Seitenflanken 14.1 und 14.2 des Profils 14 Bodensicken 12 eingestanzt - wie in Fig.3.3 gezeigt - die sich quer zur Längsnut erstrecken. Die Bodensicken 12 haben einen teilkreis- oder teilellipsenförmigen Querschnitt. Es sind aber auch andere Querschnitte ausführbar. Um möglichst geringen Kontakt zum Faden zu halten, ist es vorteilhaft, die Bodensicke zu Beginn und am Ende der Heizstrecke höher auszuformen, so daß die Bodensikken im übrigen Bereich der Heizstrecke kaum kontaktiert werden.To keep the thread away from the bottom of the groove, there are between the side flanks 14.1 and 14.2 of the profile 14 bottom beads 12 punched - as in Fig.3.3 shown - which extend transversely to the longitudinal groove. The surrounds 12 have a part-circular or part-elliptical cross section. There are but other cross-sections are also possible. To minimize contact to hold the thread, it is advantageous to start the bottom bead and form higher at the end of the heating section, so that the floor tiles can hardly be contacted in the rest of the heating section.

In Fig. 4.1 ist ein Profil mit den Seitenwänden 14.1 und 14.2 gezeigt, bei denen abwechselnd jeweils zwei hintereinander liegende Sicken 21 in den Seitenwänden eingeprägt sind. Durch diese Anordnung der Fadenführer wird erreicht, daß die Umschlingung des Fadens bei gleicher Anzahl von Fadenführern gegenüber der Heizeinrichtung nach Fig. 3.1 um 50 % reduziert werden kann. Des weiteren ist bei dieser Heizeinrichtung nach Fig. 4.1 der Abstand zwischen gegenüberliegned benachbarten Fadenführern 6 zu Beginn der Heizstrecke kleiner ausgeführt, als im weitern Verlauf der Heizstrecke. Hierdurch entsteht ein unregelmäßiger zick-zackförmiger Fadenverlauf. Insbesondere im Anfangsbereich führt der kurze Zick-Zack zu einer schnellen Erwärmung des Fadens, da der vom Faden mitgeführte Luftmantel kurz hintereinander mehrmals abgestreift wird und zudem der Faden in seinem Lauf rasch beruhigt wird.In Fig. 4.1 a profile with the side walls 14.1 and 14.2 is shown at which alternately two consecutive beads 21 in the Sidewalls are embossed. This arrangement of the thread guides is achieved that the loop of the thread with the same number of Thread guides compared to the heating device according to Fig. 3.1 by 50% can be reduced. Furthermore, this heater is after Fig. 4.1 the distance between opposite thread guides 6 executed smaller at the beginning of the heating section than in the wider Course of the heating section. This creates an irregular zigzag Thread course. Especially in the beginning the short leads Zigzag for rapid heating of the thread because of the thread air jacket carried is stripped several times in quick succession and in addition, the thread is quickly calmed in its course.

In Fig. 4.2 ist eine Heizeinrichtung dargestellt, die eine Fadenführer-Anordnung besitzt, die am Anfang eine geringe Fadenumschlingung pro Fadenführer ermöglicht, um dann in einem regelmäßigen Zick-Zack-Verlauf mit abwechselnd einen Fadenführer übergeht. Hierbei sind die Fadenführer wiederuum als Sicken 21 eingeprägt. In Fig. 4.2 a heating device is shown, the thread guide arrangement has at the beginning a low thread wrap per Thread guide allows to then in a regular zigzag course alternating with a thread guide. Here are the Thread guide embossed again as beads 21.

Das Profil 14 wird vorzugsweise aus einem flachen Blechstreifen 15 hergestellt. Hierbei wird der Blechstreifen 15, wie in Fig. 5.1 dargestellt ist, entlang zweier Faltlinien 18 zu einem gewünschten Profil gefaltet.
Die Sicken 21 und die Bodensicken 12 werden zuvor in den Blechstreifen 15 mittels eines Biege-Stanzwerkzeuges eingebracht. Zur Begrenzung der Sicken 21 und der Bodensicken 12 zur Faltlinie 18 hin, werden vor der Verformung die Einschnitte 16 und 17 erzeugt.The profile 14 is preferably made from a flat sheet metal strip 15. Here, the sheet metal strip 15, as shown in Fig. 5.1, is folded along two fold lines 18 to a desired profile.
The beads 21 and the bottom beads 12 are previously introduced into the sheet metal strip 15 by means of a bending punch. To limit the beads 21 and the bottom beads 12 towards the fold line 18, the incisions 16 and 17 are produced before the deformation.

In dem Blechstreifen 15 sind gegenüber den Sicken 21 in den jeweils gegenüberliegenden Seitenwänden Sichtfenster 24 eingestanzt. Diese Sichtfenster 24 ermöglichen eine visuelle Beurteilung des Verschmutzungsgrades an den Fadenführern im ausgebauten Zustand. Weiterhin ist zur Aufnahme eines Werkzeuges eine Eingriffsöffnung 25 an einem Ende des Blechstreifens eingestanzt.In the sheet metal strip 15 are opposite the beads 21 in each opposite side walls window 24 punched. This Viewing windows 24 enable a visual assessment of the degree of contamination on the thread guides when removed. Furthermore, the Receiving a tool an engagement opening 25 at one end of the Stamped sheet metal strip.

In Fig. 5.2 ist der zu einem Profil gefaltete Blechstreifen 15 dargestellt.
Dieses Profil mit den Sicken 21 und 12 wird in der gezeigten Form ohne weitere Veränderung in eine Längsnut 2 einer Heizeinrichtung 1 eingeschoben.5.2, the sheet metal strip 15 folded into a profile is shown.
This profile with the beads 21 and 12 is inserted in the shape shown without further change in a longitudinal groove 2 of a heating device 1.

In Fig.6 ist eine Heizeinrichtung mit in Längsrichtung der Längsnut 2 hintereinanderliegenden Profilen 14 und 19 gezeigt. Die Metallbänder werden dabei von den Seitenflanken 14.1, 14.2 und 19.1, 19.2 der Profile 14 und 19 gebildet. In den Seitenflanken 14.1 und 14.2 sind die Sicken 21.1 und in den Seitenflanken 19.1 und 19.2 die Sicken 21.2 eingeprägt.
Die Sicken 21.1 und 21.2 weisen alle die gleichen Tiefen auf. Die Abstände zwischen den Sicken 21.1 an den Seitenflanken 14.1 und 14.2 und die Abstände zwischen den Sicken 21.2 an den Seitenflanken 19.1 und 19.2 sind nicht gleich, so daß der Faden in den Heizzonen der Profile 14 und 19 unterschiedlich geführt wird. 6 shows a heating device with profiles 14 and 19 lying one behind the other in the longitudinal direction of the longitudinal groove 2. The metal strips are formed by the side flanks 14.1, 14.2 and 19.1, 19.2 of the profiles 14 and 19. The beads 21.1 are embossed in the side flanks 14.1 and 14.2 and the beads 21.2 in the side flanks 19.1 and 19.2.
The beads 21.1 and 21.2 all have the same depths. The distances between the beads 21.1 on the side flanks 14.1 and 14.2 and the distances between the beads 21.2 on the side flanks 19.1 and 19.2 are not the same, so that the thread is guided differently in the heating zones of the profiles 14 and 19.

Die Heizeinrichtung nach Fig. 7 zeigt wiederum ein in die Längsnut 2 eingefügtes Profil mit den Seitenflanken 14.1 und 14.2, die sich an den Seitenwänden 4 und 5 abstützen.
In den Seitenflanken 14.1 und 14.2 sind die Sicken 22 eingeformt. Die Sicken 22 weisen einen rechteckigen Querschnitt auf, die an ihrer Längsseite die Führungsfläche 23 ausgebildet haben. Die Sicken 22 durchdringen die Mittelebene der Längsnut 2, so daß der Faden 7 in einem Zick-Zack-förmigen Verlauf entlang der Längsnut 2 geführt wird. Im Bereich der Sicken 22 liegt der Faden 7 an der Führungsfläche 23 an, so daß ein sehr
großer Kontaktbereich besteht. Mit dieser Heizeinrichtung ist es möglich, den Faden durch Kontakt zu erwärmen.7 again shows a profile inserted into the longitudinal groove 2 with the side flanks 14.1 and 14.2, which are supported on the side walls 4 and 5.
The beads 22 are formed in the side flanks 14.1 and 14.2. The beads 22 have a rectangular cross section, which have the guide surface 23 formed on their long side. The beads 22 penetrate the central plane of the longitudinal groove 2, so that the thread 7 is guided in a zigzag shape along the longitudinal groove 2. In the area of the beads 22, the thread 7 rests on the guide surface 23, so that a very
there is a large contact area. With this heating device, it is possible to heat the thread by contact.

Die in Fig.2.1 bis 6 gezeigten Heizeinrichtungen 1 sind als langgestreckte Schienen dargestellt. In die Schiene ist eine Längsnut 2 mit gegenüberliegenden Seitenwandungen 4 und 5 eingebracht. Die Längsnut 2 wird durch einen Widerstandsheizer 13 erhitzt. Der Widerstandsheizer 13 ist als Stab ausgebildet. Dieser Stab ist in eine Bohrung eingelassen, welche in die Grundplatte der Heizeinrichtung in Längsrichtung eingebracht ist. Zur Vermeidung von Wärmeverlusten ist die Längsnut 2 im Betrieb, nachdem der Faden eingelegt wurde, mit einem Deckel verschlossen. The heating devices 1 shown in Fig. 2.1 to 6 are elongated Rails shown. In the rail is a longitudinal groove 2 with opposite Side walls 4 and 5 introduced. The longitudinal groove 2 is heated by a resistance heater 13. The resistance heater 13 is trained as a rod. This rod is embedded in a hole, which is introduced into the base plate of the heating device in the longitudinal direction. To avoid heat loss, the longitudinal groove 2 is in operation, after the thread has been inserted, closed with a lid.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
HeizeinrichtungHeating device
22nd
LängsnutLongitudinal groove
33rd
Trägercarrier
3.13.1
MetallbandMetal strap
3.23.2
MetallbandMetal strap
44th
SeitenwandSide wall
55
SeitenwandSide wall
66
FadenführerThread guide
6.16.1
Erhebung, AnformungCollection, shaping
6.26.2
ErhebungSurvey
77
Fadenthread
88th
StegeWalkways
99
Heizoberfläche/NutgrundHeating surface / groove base
1010th
AnschrägungBevel
1111
Einlaufenema
1212th
BodensickeBottom bead
1313
WiderstandsheizerResistance heater
1414
Profilprofile
14.114.1
SeitenflankenSide flanks
14.214.2
SeitenflankenSide flanks
1515
BlechstreifenMetal strips
1616
Einschnittincision
1717th
Einschnittincision
1818th
FaltlinieFold line
1919th
Profilprofile
19.119.1
SeitenflankeSide flank
19.219.2
Seitenflanke Side flank
2020th
FührungsflächeLeadership area
2121
SickeSurround
2222
SickeSurround
2323
FührungsflächeLeadership area
2424th
SichtfensterViewing window
2525th
EintrittsöffnungEntrance opening

Claims (21)

  1. Heating apparatus for heating an advancing yarn (7), the elongate heating element (1) of the apparatus having a longitudinal groove (2), on the opposing side walls (4, 5) of which are mounted several yarn guides (6) for guiding the yarn (7) in a zigzag line lengthwise through the longitudinal groove (2),
    characterized in that
    the yarn guides (6) are formed as elevations (6.1, 6.2) on two metal strips (3.1, 3.2) and the metal strips (3.1, 3.2) are mounted opposite one another on the side walls (4, 5), the opposing elevations (6.1, 6.2) being offset from one another.
  2. Heating apparatus according to Claim 1,
    characterized in that
    the spacings between adjacent yarn guides are equal in the longitudinal direction.
  3. Heating apparatus according to Claim 1,
    characterized in that
    the spacings between adjacent yarn guides are unequal in the longitudinal direction.
  4. Heating apparatus according to any one of Claims 1 to 3,
    characterized in that
    the opposing metal strips (3.1, 3.2) each have one or two yarn guides (6) formed thereon alternately in the longitudinal direction.
  5. Heating apparatus according to any one of the preceding Claims,
    characterized in that
    the metal strip (3) is a sheet metal strip and the yarn guides (6) are formed as corrugations, beadings or impressions (21) of the sheet metal strip.
  6. Heating apparatus according to any one of Claims 1 to 5,
    characterized in that
    the opposing metal strips (3.1, 3.2) are interconnected by webs (8) disposed transversely in relation to the longitudinal groove (2).
  7. Heating apparatus according to any one of Claims 1 to 4,
    characterized in that
    the metal strips (3.1, 3.2) are fashioned as side flanks (14.1, 14.2) of a shaped profile (14), the cross section of which corresponds to the cross section of the longitudinal groove (2).
  8. Heating apparatus according to Claims 5 and 7,
    characterized in that
    the profile (14) is made from a flat metal sheet (15) which is folded in accordance with the cross section of the longitudinal groove (2) and in which each corrugation (21) proceeds from an incision (16) of the metal sheet (15), which extends along, or at a small distance parallel to, the fold line (18).
  9. Heating apparatus according to any one of Claims 1 to 8,
    characterized in that
    the yarn guides (6) terminate on the opposite side of the groove bottom (9), in an oblique bevel (10) which inclines towards the centre plane of the groove.
  10. Heating apparatus according to any one of Claims 1 to 8,
    characterized in that
    in the region of the yarn guidance, the yarn guides (6) have a guide surface (20) that is curved in the plane of advancement of the yarn.
  11. Heating apparatus according to Claim 10,
    characterized in that
    the yarn guides (6) have a cross section in the shape of a divided circle or divided ellipse.
  12. Heating apparatus according to any one of Claims 1 to 8,
    characterized in that
    in the region of the yarn guidance, the yarn guides (6) have a guide surface (22) extending substantially parallel to the side walls (4, 5).
  13. Heating apparatus according to Claim 12,
    characterized in that
    the yarn guides (6) have a rectangular cross section.
  14. Heating apparatus according to Claim 8,
    characterized in that
    the profile is provided in the groove bottom with several successively disposed bottom corrugations (12), each bottom corrugation (12) being bounded by two opposing, parallel incisions (17) in the metal sheet (15), and the incisions (17) extending along or slightly spaced apart from the fold line (18).
  15. Heating apparatus according to Claim 14,
    characterized in that
    the bottom corrugations (12) have a cross section in the shape of a divided circle or divided ellipse and are cylindrical in form in the transverse direction of the longitudinal groove (2).
  16. Heating apparatus according to any one of Claims 1 to 15,
    characterized in that
    the metal strips (3.1, 3.2) have a hard material coating on their inner side, at least in the region of the yarn guidance.
  17. Heating apparatus according to Claim 16,
    characterized in that
    the metal strips (3.1, 3.2) are treated with nitride or boride on their inner side, at least in the region of the yarn guidance.
  18. Heating apparatus according to Claim 16,
    characterized in that
    the metal strips (3.1, 3.2) have a chromium nitride or titanium nitride coating, at least in the region of the yarn guidance.
  19. Heating apparatus according to any one of claims 1 to 18,
    characterized in that
    several metal strips (14.1, 19.1) are disposed in succession in the longitudinal direction of the longitudinal groove (2).
  20. Heating apparatus according to Claim 19,
    characterized in that
    the spacing between the yarn guides (6) on successively disposed metal strips (14.1, 19.1) is unequal in the longitudinal direction.
  21. Heating apparatus according to Claims 19 and 20,
    characterized in that
    the successively disposed metal strips (14.1, 19.1) are of the same length.
EP96102829A 1995-03-10 1996-02-26 Heater for heating moving yarns Expired - Lifetime EP0731197B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19508519 1995-03-10
DE19508519 1995-03-10
DE19530360 1995-08-18
DE19530360 1995-08-18

Publications (2)

Publication Number Publication Date
EP0731197A1 EP0731197A1 (en) 1996-09-11
EP0731197B1 true EP0731197B1 (en) 1999-05-12

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ID=26013219

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Application Number Title Priority Date Filing Date
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Country Status (6)

Country Link
US (1) US5628176A (en)
EP (1) EP0731197B1 (en)
KR (1) KR100382095B1 (en)
CN (1) CN1066218C (en)
DE (1) DE59601849D1 (en)
TW (1) TW422219U (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69510955T2 (en) * 1994-11-22 1999-12-09 Icbt Yarn Roanne METHOD FOR STRETCH TEXTURING BY FALSE THREADS AND OVEN FOR APPLYING THIS METHOD
EP0751245B1 (en) * 1995-06-27 2002-11-27 B a r m a g AG Heating apparatus for heating a moving yarn
TW347419B (en) * 1996-04-03 1998-12-11 Barmag Barmer Maschf Apparatus for heating an advancing yarn
JP3490844B2 (en) * 1996-05-30 2004-01-26 東レエンジニアリング株式会社 Cooling device for false twisting machine
DE50003017D1 (en) 1999-05-29 2003-08-28 Barmag Barmer Maschf HEATING DEVICE
CN103469409A (en) * 2013-09-11 2013-12-25 昆山市巴城镇顺拓工程机械配件厂 Plastic fiber adjusting device
CN110699797B (en) * 2019-09-27 2020-08-04 浙江正堂实业股份有限公司 Elasticizer for processing denim warp threads

Family Cites Families (8)

* 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
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
EP0412429B1 (en) * 1989-08-09 1994-11-17 Barmag Ag Heating device
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
DE59405231D1 (en) * 1993-06-15 1998-03-12 Barmag Barmer Maschf HEATING RAIL
DE4423202C2 (en) * 1993-07-17 1996-05-02 Barmag Barmer Maschf Heating device for heating a running thread

Also Published As

Publication number Publication date
DE59601849D1 (en) 1999-06-17
EP0731197A1 (en) 1996-09-11
KR100382095B1 (en) 2003-07-18
TW422219U (en) 2001-02-11
CN1137581A (en) 1996-12-11
KR960034500A (en) 1996-10-22
US5628176A (en) 1997-05-13
CN1066218C (en) 2001-05-23

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