EP1416772A1 - Rouleau chauffé par induction - Google Patents

Rouleau chauffé par induction Download PDF

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Publication number
EP1416772A1
EP1416772A1 EP02024619A EP02024619A EP1416772A1 EP 1416772 A1 EP1416772 A1 EP 1416772A1 EP 02024619 A EP02024619 A EP 02024619A EP 02024619 A EP02024619 A EP 02024619A EP 1416772 A1 EP1416772 A1 EP 1416772A1
Authority
EP
European Patent Office
Prior art keywords
coil
driven shaft
frequency
godet
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02024619A
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German (de)
English (en)
Inventor
Urs Eggenberger
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.)
SSM Schaerer Schweiter Mettler AG
Original Assignee
SSM Schaerer Schweiter Mettler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SSM Schaerer Schweiter Mettler AG filed Critical SSM Schaerer Schweiter Mettler AG
Priority to EP02024619A priority Critical patent/EP1416772A1/fr
Publication of EP1416772A1 publication Critical patent/EP1416772A1/fr
Withdrawn legal-status Critical Current

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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
    • H05B6/145—Heated rollers

Definitions

  • the present invention relates to an inductively heated godet, with one of a fixed Bobbin-borne coil, with a driven shaft that runs the bobbin penetrates concentrically, and with a ferromagnetic godet jacket on the shaft is rotatably attached and concentrically surrounds the coil.
  • Galettes are rollers or rollers which rotate and rotate about their axis of rotation, for example in stretching and texturing devices the threads, tapes wrapped around them and promote the like.
  • Heated godets which serve to overflow the thread heating up a certain temperature are used especially in air-blasting texturing, this is a process in the manufacture of synthetic fibers, in which in a smooth continuous yarn (Multifilament yarn) a crimp is created, which is caused by blowing the yarn in one Air blowing nozzle (texturing nozzle) to loops, loops, arches and the like takes place.
  • Air blowing nozzle texturing nozzle
  • the synthetic fiber must optimally design crimp before the actual texturing process be heated and stretched.
  • There are other uses for heated godets for example when stretching or "stretch fixing".
  • heating godets which stretch the yarn at the same time and heat. This type of heating combines the advantages of gentle heat transfer, a space-saving design of the machine and its flexible usability.
  • heating godets are for example in WO-A-02/12603, EP-A-0 443 390 and EP-A-0 622 972 described.
  • heating godets there is a hollow cylindrical one in the area within the godet jacket Radiator placed over the drive shaft and with an end face on one Carrier fixed.
  • On the circumference of the heating element is a substantially the length of the Godet jacket extending heating means arranged, which is preferably by electrical Coils is formed, which allow heating of the godet jacket by means of induction.
  • the invention is now to introduce a new concept of a heating godet, which is characterized by low costs, high efficiency and high accuracy.
  • the coil has a winding made of high-frequency strands which has an alternating magnetic field with a high frequency generated, and that means for shielding the driven shaft from that by the Magnetic field generated winding are provided.
  • the high-frequency induction heating has the advantage that the motor is supported driven shaft is not heated as much as with a conventional induction heater 50 Hz mains frequency. At 50 Hz are also caused by magnetic forces of the magnetic field generated impacts transferred to the storage at high frequency due to the inertia of the Mechanics cannot take effect. For this reason, the high frequency induction heater more gentle for storage. Means for shielding the driven shaft have the consequence that as little energy of the magnetic field as possible goes into this wave, which heats up much less than the godet jacket.
  • the temperature of the godet jacket is very accurate adjustable, and the simple structure of the heating godet according to the invention has a favorable effect their costs.
  • a first preferred embodiment of the godet according to the invention is characterized in that that the means for shielding the driven shaft by arranged within the winding ferrite rods are formed.
  • a second preferred embodiment of the godet according to the invention is thereby characterized in that the ferrite rods are ring-shaped and parallel to the driven shaft the bobbin are arranged.
  • a third preferred embodiment is characterized in that the frequency of the magnetic alternating field between 10 kHz and 100 kHz. It is preferably between 20 and 35 kHz.
  • the winding consists of a high-frequency copper strand.
  • the coil body is preferably made of plastic or aluminum.
  • Another preferred embodiment of the godet according to the invention is characterized by a sensor formed by a platinum element manufactured in thin-film technology for the Temperature of the godet casing, which is used to enlarge its active area Sheet pack is used.
  • Heating godets are used to heat a running synthetic thread, for example one Filament yarn used on an air texturing machine.
  • Such heating godets essentially exist from a stationary coil body with a coil (inductor), one in the direction of rotation drivable bell, which is also referred to as a godet jacket, a temperature sensor and a heating control with which the godet jacket to a predetermined temperature setpoint is regulated.
  • the godet jacket is made of cast iron and can be magnetized.
  • the heating system is an induction heater that is opposite one Resistance heating is characterized by a higher power density. With induction heating an AC voltage is used that is applied to the coil. This creates in Godet jacket an alternating magnetic field, whose eddy current fields the godet jacket Warm up.
  • the godet shown in the drawing contains one on a fixed coil former 1 arranged cylindrical coil 2 with a winding of a high-frequency copper wire, one rotatable godet jacket 3, a temperature sensor 4 and a heating control, not shown.
  • the winding generates an alternating magnetic field with a high frequency of, for example between about 10 and 100 kHz, preferably this frequency is between 20 and 35 kHz.
  • the field lines emerge through one end face of the coil 2 and go into the godet jacket 3 over, penetrate through the other end face into the coil 2 and close yourself in the coil center.
  • the alternating magnetic field in the godet jacket creates eddy currents, which in turn cause losses.
  • the godet jacket 2 is driven Spanned shaft 5, which is rotatably mounted in a fixed receiving body 6 and is connected to a drive (not shown).
  • the driven shaft 5 is made of stainless steel or aluminum and is a hollow shaft executed.
  • the bobbin 1 is made of plastic or aluminum to the magnetic Field lines not to be influenced; it is firmly connected to the receiving body 6.
  • the one for the Coil body 1 selected plastic is a perfluoro copolymer that process thermoplastic, especially injection molding, lets.
  • a spacer 7 made of aluminum is provided, which one forms an axial stop for the positioning of the godet casing 3.
  • the socket 7 can no longer apply if the fastening of the godet casing 3 on the driven shaft 5 there is a cone (see, for example, WO-A-02/12603 or CH-A-607 586).
  • Ferrite rods 8 are arranged in a ring shape and parallel to the driven shaft 5.
  • the magnetic field strength of a coil inside the coil is greatest, what would result in that the magnetic field of the coil 2 in the driven shaft 1 and in the Spacer 7 creates eddy currents and thus these two components would be heated.
  • This Effect is achieved by suitable selection of the shape and material of the driven shaft 5 and the spacer 7 and avoided by the ferrite rods 8 by preventing the Guide field lines through these components.
  • Soft magnetic ferrites have a low magnetic resistance.
  • the ferrite rods 8 inside the winding thus conduct the magnetic flux better than the driven shaft 5 and the spacer 7 and act as a shield of these components against that of the coil 2nd generated magnetic field.
  • the driven shaft 5 made of chrome steel or aluminum and the spacer 7 made of aluminum manufactured. These measures prevent heating due to magnetic losses.
  • the electrical Resistance of the components mentioned can be increased. This is done by reducing the cross section achieved by the driven shaft 5 as a hollow shaft and the spacer 7 as possible is thin-walled.
  • the temperature sensor 4 which must be insensitive to magnetism, is characterized by an in Platinum sensors manufactured using thin-film technology. Because the response time of the temperature sensor 4 is indirectly proportional to its active surface and the platinum sensor is therefore one surface should be as large as possible, the sensor with thermal paste is in a sheet metal package glued in by more than 10 times the surface.
  • the temperature sensor 4 is on the receiving body 6 attached, i.e. fixed, and protrudes into a slot in the rotatable godet casing 3. This arrangement has compared to one rotating with the godet jacket Heat sensor has the advantage that for the electrical connection between the heating control and the temperature sensor 4 no slip rings or any other subject to wear Contact elements are required.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP02024619A 2002-11-04 2002-11-04 Rouleau chauffé par induction Withdrawn EP1416772A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02024619A EP1416772A1 (fr) 2002-11-04 2002-11-04 Rouleau chauffé par induction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02024619A EP1416772A1 (fr) 2002-11-04 2002-11-04 Rouleau chauffé par induction

Publications (1)

Publication Number Publication Date
EP1416772A1 true EP1416772A1 (fr) 2004-05-06

Family

ID=32088013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02024619A Withdrawn EP1416772A1 (fr) 2002-11-04 2002-11-04 Rouleau chauffé par induction

Country Status (1)

Country Link
EP (1) EP1416772A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009062640A1 (fr) * 2007-11-12 2009-05-22 Khs Ag Groupe d'étiquetage à rouleau encolleur chauffé électriquement
CN101478845B (zh) * 2009-02-06 2011-09-07 洛阳轴研科技股份有限公司 导辊推拉式感应加热器用于大型轴承加热的方法
DE102010053011A1 (de) * 2010-12-02 2012-06-06 Sew-Eurodrive Gmbh & Co. Kg Fahrzeug mit Energiespeicher
DE102015108635A1 (de) * 2015-02-19 2016-08-25 Ritter Elektronik Gmbh Galetteneinheit mit einer Induktionsspulenanordnung zum Beheizen ohne Magnetfluss leitende Inneneinbauten
FR3039867A1 (fr) * 2015-08-04 2017-02-10 Skf Ab Boite de palier comprenant un palier et un moyen de chauffage du palier, et bogie comprenant une telle boite
EP2366817B2 (fr) † 2008-11-28 2018-01-10 Murata Machinery, Ltd. Machine de filature

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101086A (en) * 1990-10-25 1992-03-31 Hydro-Quebec Electromagnetic inductor with ferrite core for heating electrically conducting material
DE4313837C1 (de) * 1993-04-29 1994-09-01 Neumag Gmbh Verfahren zum induktiven Beheizen einer Galette und induktiv beheizte Galette
DE19538261A1 (de) * 1995-10-13 1997-04-17 Neumag Gmbh Verfahren zum induktiven Beheizen einer Galette und induktiv beheizte Galette

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101086A (en) * 1990-10-25 1992-03-31 Hydro-Quebec Electromagnetic inductor with ferrite core for heating electrically conducting material
DE4313837C1 (de) * 1993-04-29 1994-09-01 Neumag Gmbh Verfahren zum induktiven Beheizen einer Galette und induktiv beheizte Galette
DE19538261A1 (de) * 1995-10-13 1997-04-17 Neumag Gmbh Verfahren zum induktiven Beheizen einer Galette und induktiv beheizte Galette

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009062640A1 (fr) * 2007-11-12 2009-05-22 Khs Ag Groupe d'étiquetage à rouleau encolleur chauffé électriquement
CN101835690B (zh) * 2007-11-12 2012-02-22 Khs有限责任公司 包括可电加热的涂胶辊的贴标组件
US9725200B2 (en) 2007-11-12 2017-08-08 Khs Gmbh Beverage bottling plant with heated information-adding equipment and information-adding equipment
EP2366817B2 (fr) † 2008-11-28 2018-01-10 Murata Machinery, Ltd. Machine de filature
CN101478845B (zh) * 2009-02-06 2011-09-07 洛阳轴研科技股份有限公司 导辊推拉式感应加热器用于大型轴承加热的方法
DE102010053011A1 (de) * 2010-12-02 2012-06-06 Sew-Eurodrive Gmbh & Co. Kg Fahrzeug mit Energiespeicher
DE102010053011B4 (de) * 2010-12-02 2021-04-29 Sew-Eurodrive Gmbh & Co Kg Fahrzeug mit Energiespeicher
DE102015108635A1 (de) * 2015-02-19 2016-08-25 Ritter Elektronik Gmbh Galetteneinheit mit einer Induktionsspulenanordnung zum Beheizen ohne Magnetfluss leitende Inneneinbauten
CN105908318A (zh) * 2015-02-19 2016-08-31 里特电子有限公司 具有用于加热的感应线圈布置结构的导丝辊单元
FR3039867A1 (fr) * 2015-08-04 2017-02-10 Skf Ab Boite de palier comprenant un palier et un moyen de chauffage du palier, et bogie comprenant une telle boite

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