EP0845196B2 - Galette pour chauffer un fil synthetique continu - Google Patents

Galette pour chauffer un fil synthetique continu Download PDF

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Publication number
EP0845196B2
EP0845196B2 EP97928210A EP97928210A EP0845196B2 EP 0845196 B2 EP0845196 B2 EP 0845196B2 EP 97928210 A EP97928210 A EP 97928210A EP 97928210 A EP97928210 A EP 97928210A EP 0845196 B2 EP0845196 B2 EP 0845196B2
Authority
EP
European Patent Office
Prior art keywords
godet
carrier
coil support
primary windings
galette
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
EP97928210A
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German (de)
English (en)
Other versions
EP0845196A1 (fr
EP0845196B1 (fr
Inventor
Ralf Feldhoff
Stefan Tietmeyer
Rainald Voss
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 Textile GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co KG
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Publication date
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Application filed by Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP0845196A1 publication Critical patent/EP0845196A1/fr
Application granted granted Critical
Publication of EP0845196B1 publication Critical patent/EP0845196B1/fr
Publication of EP0845196B2 publication Critical patent/EP0845196B2/fr
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/14—Tools, e.g. nozzles, rollers, calenders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/14—Tools, e.g. nozzles, rollers, calenders
    • H05B6/145—Heated rollers
    • 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
    • D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll

Definitions

  • the invention relates to a godet for heating a running synthetic thread according to the preamble of claim 1.
  • Such godets are known.
  • a godet for heating a running yarn which has more than two axially successively arranged stationary primary windings and a magnetically conductive godet, which is rotatably mounted concentrically to the primary windings and which is inductively connected to the primary windings via a narrow radial gap for generating secondary currents is.
  • the carrier of the primary windings is composed of a plurality of layered transformer plates, which are mounted perpendicular to the axis of the bobbin.
  • the primary windings are operated with an AC of adjustable frequency, the primary windings are included in a resonant circuit, which is tuned to the set frequency.
  • the resonant circuit is switched on or off depending on the measured temperature on the godet casing.
  • a similar galette is in the GB 989,349 described in which a primary winding is mounted on a concentrically arranged in a hollow cylindrical godet casing round carrier.
  • a primary winding is mounted on a concentrically arranged in a hollow cylindrical godet casing round carrier.
  • Like in the US 3,508,024 are all flat transformer sheets of the carrier of the primary winding in the axial direction on the bobbin layered.
  • the laminated iron sheets are arranged to form annular concentric air gaps radial to the godet rotation axis.
  • the magnetic flux in particular to the coil carrier, is shielded, it is prevented that a stray field can escape to the outside.
  • an optimal magnetic flux is also possible, which does not have to overcome boundary layers and effectively shields not heated sections.
  • the special design and arrangement of the transformer sheets ensure better heating of the godet jacket, because the stray field within the godet is significantly reduced.
  • Another advantage is that commercial cut cores can be used to accommodate the windings. This simplifies the manufacturing process and reduces costs.
  • the gap formed between adjacent cut cores only leads to a very small stray field, which has no influence on the generated current and thus the temperature in the godet casing.
  • thin transformer sheets can be used up to a thickness of 0.01 mm. Since the penetration depth of the magnetic flux decreases with increasing frequency and the conduction of the magnetic flux, however, takes place exclusively on the surface, such thin sheets are useful in order to minimize the power loss.
  • a godet casing 2 is clamped by means of a cone arrangement 7 on a spindle 9 mounted in two bearings 8.
  • the bearings 8 are supported on a fixed receiving body 11.
  • the godet casing 2 is formed in cross-section substantially U-shaped and has on its end wall 2a a central opening which is bounded by a substantially cylindrical inwardly directed projection 13 which has an inner cone 7 which fits to a cone of the spindle 9.
  • a bobbin 5 From the receiving body 11 extends in the form of a hollow cylinder, a bobbin 5 through the spindle 9 almost to the end wall 2a of the godet shell 2.
  • the carriers 3 each have a groove base 3a and spaced apart legs 3b, so that a U-shaped annular space is formed, which serves to receive the primary winding 1. Die U-förmige Ring Structure 3a ist in Fig. 1 classroom.
  • the legs 3b extend to just before the inner surface of the godet casing 2. Two adjacent legs 3b form with this inner lateral surface in each case a defined radial gap 4 of the leg width corresponding dimension.
  • a corresponding control device (not shown) arranged in the carriers 3 primary windings 1 are separately controllable, so that a substantially constant temperature along the outer surface of the godet casing 2 can be achieved.
  • the rotating godet casing 2 is magnetically coupled, so that a voltage is induced in the godet casing, which has a current flow result.
  • the current flow in the godet casing along the circumference has, due to the electrical resistance of the godet material, a heating result.
  • the transformer plates are arranged in the groove base so that they lie radially one above the other.
  • Fig. 2 is a locally enlarged sectional view of the groove bottom 3a shown, in which the transformer sheets are stacked radially in the region of the groove bottom.
  • a preferred embodiment is shown, according to which the carriers 3 are formed so that the layered transformer sheets are stacked U-shaped into each other to so-called Thomasbandkernen, ie, the transformer sheets are in the radial direction and not - as is well known - layered in the axial direction.
  • the carriers 3 are formed so that the layered transformer sheets are stacked U-shaped into each other to so-called Thomasbandkernen, ie, the transformer sheets are in the radial direction and not - as is well known - layered in the axial direction.
  • the bobbin 5 On the circumference of the bobbin 5 several U-shaped Schittbandkerne 3 are arranged segmentally to several.
  • the segment-shaped cut cores 3 arranged on the circumference of the coil carrier in the circumferential direction without spacing thus form a winding carrier for a primary winding.
  • the advantage of using cutting cores 3 is that the magnetic flux towards the outside, in particular also to the coil support 5, is shielded, so that no stray field can escape to the outside.
  • the layered transformer sheets are stacked in a U-shape. This also allows an optimal magnetic flux that does not have to overcome any boundary layers. Trafo sheets, which are arranged one after the other in the axial direction, are caused by high-frequency use with, for example, 2 kHz thicker boundary layers, which lead to a significant increase in resistance.
  • the surface of the groove base 3a, on which the chess band core 3 is arranged on the carrier 5, is either substantially planar or adapted to the surface of the carrier 5 and contacts the surface of the carrier 5. The winding takes place in the circumferential direction.
  • the free ends of the legs 3b of the cut cores are rounded so that a substantially constant radial gap 4 is formed between the godet casing 2 and the free end of the legs 3b.
  • the gap 14 formed between adjacent cut-strip cores 3 leads only to a very small stray field which has no influence on the generated current and thus the temperature in the godet casing 2.
  • the kerf cores of the adjacent primary windings can be arranged offset from one another in such a way that axially defined gaps 14 are formed around the width of the legs 3b.
  • the carrier 3 consists of separate legs 3b and a separate groove base 3a.
  • the groove base 3a of the carrier 3 is a hollow cylinder of a plurality of stacked in the radial direction transformer plates.
  • the legs 3b of the carrier 3 have a plurality of axially stacked annular transformer sheets. The guided between the groove base 3a and the legs 3b radial stray field is very low, which is why no influence on the generated current and thus the temperature in the godet casing 2 is present.
  • Fig. 4B shows another example in which the carrier 3 consists of separate legs 3b and a separate groove bottom 3a.
  • the groove base 3a of the carrier 3 is a hollow cylinder of a plurality of stacked in the radial direction transformer plates.
  • the legs 3b of the cutting belt core 3 have a plurality of stacked annular transformer sheets.
  • the axial stray field guided between the groove bottom 3a and the legs 3b is very small, which has no influence on the generated current and thus on the temperature in the godet casing 2.
  • Fig. 4C shows another example in which the carrier 3 consists of separate legs 3b and a separate groove bottom 3a.
  • the groove bottom 3a of the cut strip core 3 is a hollow cylinder of a plurality of stacked in the radial direction transformer plates.
  • the legs 3b of the carrier 3 have a plurality of stacked annular transformer sheets. The oblique stray field guided between the groove bottom 3a and the legs 3b is very small, which is why there is no influence on the generated current and thus on the temperature in the godet casing 2.
  • Fig. 6 a shape of the leg 3b, both with the arrangement in Fig. 4A as well as with the arrangement in Fig. 4B can be combined.
  • the leg 3b is stacked from a plurality of annular transformer plates. This arrangement is particularly low loss, since the radial gap 4 between the legs 3b and the godet casing 2 without interruptions circumferentially performed substantially constant. The magnetic leakage flux is very low.
  • each annular transformer plate has a star-shaped outer edge.
  • the transformer sheets are stacked axially so that the sternfömigen outer edges are aligned axially one after the other.
  • Fig. 8 a possible attachment of the carrier 3 is shown on the bobbin 5, in which, for example, the carrier 3 formed as cut cores are each secured with at least one screw 6 on the bobbin 5 of the godet 2.
  • U-shaped layered Trafo sheets in particular the cut cores also have the advantage that the required for high-frequency application thin sheets can be used up to 0.01 mm. Since the penetration depth of the magnetic flux decreases with increasing frequency and the power of the magnetic flux, however, takes place exclusively at the surface. Such thin sheets are required to reduce power losses.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Induction Heating (AREA)
  • Resistance Heating (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

L'invention concerne une galette pour chauffer un fil synthétique continu, qui comprend une pluralité d'enroulements primaires fixes et une enveloppe extérieure de galette magnétoconductrice, montée de manière à tourner par rapport auxdits enroulements primaires. L'enveloppe extérieure de la galette est couplée aux enroulements primaires par l'intermédiaire de branches du support de l'enroulement primaire, situées entre eux, sur une fente radiale définie pour produire des courants induits. Les supports se présentent de manière que leurs tôles de transformateur se superposent dans le sens radial au niveau de la base de la rainure, le flux magnétique étant blindé vers l'extérieur, notamment vis-à-vis du support de bobine.

Claims (8)

  1. Galet pour chauffer un fil synthétique en mouvement qui présente une pluralité d'enroulements primaires stationnaires (1) et une enveloppe de galet (2) à conduction magnétique étant montée avec possibilité de rotation par rapport à ceux-ci, lesquels enroulements primaires (1) étant respectivement enroulés sur au moins un support en forme de U (3) qui est constitué de plusieurs tôles de transformateur, les supports en forme de U étant agencés par rapport à l'enveloppe de galet (2) sur un support de bobine (5) concentriquement l'un derrière l'autre et l'enveloppe de galet (2) étant couplée à l'intermédiaire des branches (3b) du support (3) aux enroulements primaires (1) respectivement par une fente radiale définie (4) afin de générer des courants induits, dans quel cas le support (3) est réalisé de telle manière que dans la zone de fond de rainure (3a) ses tôles de transformateur sont radialement superposées et sont agencées de telle manière qu'elles sont orientées en direction axiale du support de bobine (5) et que dans la zone des branches (3b) ses tôles de transformateur sont disposées de manière axiale l'une derrière l'autre et sont agencées de telle manière qu'elles sont orientées en direction radiale du support de bobine (5), caractérisé en ce que le support (3) présente plusieurs tôles de transformateur empilées en forme de U l'une dans l'autre en tant que tore enroulé fendu.
  2. Galet selon la revendication 1, caractérisé en ce qu'une pluralité des supports (3) est agencée en forme de segments sur la périphérie du support de bobine (5) pour recevoir un des enroulements primaires (1).
  3. Galet selon la revendication 2, caractérisé en ce que le fond de rainure (3a) des supports (3) en forme de segments est sensiblement plane et touche la surface du support de bobine (5).
  4. Galet selon la revendication 2 ou 3, caractérisé en ce que sur leurs extrémités libres les branches (3b) des supports en forme de segments (3) sont réalisés de telle manière en forme d'arc qu'une fente radiale (4) s'ajuste entre le support (3) et l'enveloppe de galette (2) qui est sensiblement constante.
  5. Galet selon la revendication 2, caractérisé en ce que la surface extérieure du fond de rainure (3a) au-dessus de laquelle le support est agencé sur le support de bobine (5) est adaptée à la surface du support de bobine (5).
  6. Galet selon l'une des revendications 2 à 5, caractérisé en ce que les supports en forme de segments (3) d'enroulements primaires (1) adjacents sont agencés de manière décalée l'un à l'autre sur la périphérie du support de bobine (5) en direction axiale du support de bobine (5).
  7. Galet selon l'une des revendications 1 à 6, caractérisé en ce que les supports (3) sont respectivement fixés au moyen d'au moins une vis (6) sur le support de bobine (5) du galet.
  8. Galet selon l'une des revendications 1 à 7, caractérisé en ce que les tôles de transformateur ont une épaisseur jusqu'à 0,01 mm.
EP97928210A 1996-06-18 1997-06-16 Galette pour chauffer un fil synthetique continu Expired - Lifetime EP0845196B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624266 1996-06-18
DE19624266 1996-06-18
PCT/EP1997/003121 WO1997049265A1 (fr) 1996-06-18 1997-06-16 Galette pour chauffer un fil synthetique continu

Publications (3)

Publication Number Publication Date
EP0845196A1 EP0845196A1 (fr) 1998-06-03
EP0845196B1 EP0845196B1 (fr) 2002-11-27
EP0845196B2 true EP0845196B2 (fr) 2011-07-06

Family

ID=7797255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97928210A Expired - Lifetime EP0845196B2 (fr) 1996-06-18 1997-06-16 Galette pour chauffer un fil synthetique continu

Country Status (7)

Country Link
US (1) US5970592A (fr)
EP (1) EP0845196B2 (fr)
KR (1) KR100446346B1 (fr)
CN (1) CN1135908C (fr)
DE (1) DE59708815D1 (fr)
TW (1) TW354339B (fr)
WO (1) WO1997049265A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7105784B2 (en) * 2003-03-24 2006-09-12 Kabushiki Kaisha Toshiba Fixing device
US6861627B2 (en) * 2003-03-26 2005-03-01 Kabushiki Kaisha Toshiba Induction heat fixing device
EP1614783B1 (fr) * 2004-07-06 2007-10-10 SSM Schärer Schweiter Mettler AG noyau d'inductance pour une galette à chauffer
DE502005011168D1 (de) * 2004-10-14 2011-05-05 Oerlikon Textile Gmbh & Co Kg Galette zum führen, erwärmen und fördern eines fadens
BRPI0710693B1 (pt) * 2006-04-24 2018-07-24 Inductoheat, Inc. Método de tratamento térmico por indução elétrica
CN101431884B (zh) * 2008-12-11 2013-03-20 马嘉惠 一种与射频聚焦加热装置配套的电磁屏蔽装置
CN115198419B (zh) * 2022-08-12 2023-09-26 昆山联滔电子有限公司 一种编织线热压机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2037817C3 (de) † 1969-08-20 1973-10-04 General Electric Co., Schenectady, N.Y. (V.St.A.) Elektrische Induktions-Heizvorrichtung

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GB858855A (en) * 1956-05-15 1961-01-18 Wild Barfield Electr Furnaces Induction heated rotary rollers
NL283604A (fr) * 1961-09-26 1900-01-01
GB1121860A (en) * 1964-11-21 1968-07-31 Tokushu Denki Kabushiki Kaisha A heating rotary drum apparatus
BE716725A (fr) * 1965-12-03 1968-12-02
US3412229A (en) * 1966-10-20 1968-11-19 Cameron Brown Capital Corp Electric heating means
RO55797A (fr) * 1967-08-16 1974-01-03
DE1660235C3 (de) * 1967-08-16 1980-06-26 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Induktiv beheizbare Galette
US3448233A (en) * 1967-09-26 1969-06-03 Pillar Corp Induction heating assembly
US3508024A (en) * 1968-06-17 1970-04-21 Gen Electric Dual inductance induction heater
BE736709A (fr) * 1968-10-24 1969-12-31
GB1319318A (en) * 1970-07-01 1973-06-06 Platt International Ltd Inductively heatable roller having a temperature sensor
JPS6139394A (ja) * 1984-07-30 1986-02-25 トクデン株式会社 ３相環状成層鉄心脚型回転ロ−ラ
US5159166A (en) * 1988-06-30 1992-10-27 Rieter Machine Works, Ltd. Drawroll unit
EP0349829B1 (fr) * 1988-06-30 1996-04-17 Maschinenfabrik Rieter Ag Galette à large champ de vitesse de rotation
EP0511549B1 (fr) * 1991-04-27 1995-07-05 Barmag Ag Rouleau pour chauffer un fil en mouvement
DE4339903A1 (de) * 1992-12-03 1994-06-09 Barmag Barmer Maschf Galette zur Führung und Förderung eines Fadens
CH690599A5 (de) * 1994-11-10 2000-10-31 Barmag Barmer Maschf Galetteneinheit zum Heizen und Fördern von Fäden.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2037817C3 (de) † 1969-08-20 1973-10-04 General Electric Co., Schenectady, N.Y. (V.St.A.) Elektrische Induktions-Heizvorrichtung

Also Published As

Publication number Publication date
KR100446346B1 (ko) 2004-10-14
US5970592A (en) 1999-10-26
WO1997049265A1 (fr) 1997-12-24
EP0845196A1 (fr) 1998-06-03
CN1196864A (zh) 1998-10-21
KR19990036291A (ko) 1999-05-25
EP0845196B1 (fr) 2002-11-27
CN1135908C (zh) 2004-01-21
TW354339B (en) 1999-03-11
DE59708815D1 (de) 2003-01-09

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