US3612170A - Thermal treatment roll - Google Patents

Thermal treatment roll Download PDF

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Publication number
US3612170A
US3612170A US813127A US3612170DA US3612170A US 3612170 A US3612170 A US 3612170A US 813127 A US813127 A US 813127A US 3612170D A US3612170D A US 3612170DA US 3612170 A US3612170 A US 3612170A
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US
United States
Prior art keywords
rotor
stator
roll
connecting element
periphery
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
US813127A
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English (en)
Inventor
Paul Juppet
Robert Konopatsky
Jean Ruetsch
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.)
Rhodiaceta SA
Original Assignee
Rhodiaceta SA
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 Rhodiaceta SA filed Critical Rhodiaceta SA
Application granted granted Critical
Publication of US3612170A publication Critical patent/US3612170A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0095—Heating devices in the form of rollers
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/135—Movable heat exchanger
    • Y10S165/139—Fully rotatable

Definitions

  • ODea Assistant ExaminerP. D. Ferguson Attorney-Cushman, Darby & Cushman ABSTRACT The specification describes a thermal treatment roll, e.g. for heating or cooling a textile yarns etc., wherein a rotor is mounted on a stator which is provided with a heating or cooling means. Between the stator and rotor is a connecting element of a solid, heat-conducting lubricating material, e.g. a ring or rings of sintered metal impregnated with a lubricating oil.
  • the present invention concerns a thermal treatment roll for treating a material running thereon, such as continuous filaments, yarns formed of fibers, ropes, tows, strips of continuous material or sheets formed of discontinuous elements.
  • a thermal treatment roll such roll comprising a hollow rotor, a stator disposed inside'said rotor, heating or cooling means in said stator and a connecting element, composed at least partly of a solid, heat-conducting, lubricating material, in contact with at least part of the outer periphery of the stator and with at least part of the inner periphery of the rotor.
  • the material is heated or cooled in contact with the external periphery of the rotor, the latter being brought to the appropriate temperature mainly by conduction of the heat produced by the stator through the connecting element.
  • the element is therefore advantageously so shaped and disposed as to be in contact with the greater part of the internal periphery of the rotor and the external periphery of the stator, or at least of their useful part, i.e. of that part of the rotor which is in contact with the material to be treated and of that part of the stator which produces the heat.
  • the connecting element may serve as a means for centering the rotor, which avoids the use of any ball bearing or like centering device and considerably simplifies the design of the roll.
  • the connecting element when the connecting element is in contact with the greater part of the internal periphery of the rotor, the latter is also advantageously of small thickness, whereby the inertia of the rotating part of the roll is reduced and the heat transmission to the material to be treated is further improved.
  • the connecting element may be secured to the rotor or with the stator or independent of both of them. It may be composed of a number of independent parts of the stator and of the rotor or of parts of which at least one is fixed to the rotor or with the stator. As required, the connecting element may be formed entirely of a solid heat-conducting lubricant or it may comprise one or more heat-conducting supports, of which the surfaces in contact with the rotor, with the stator and with one another, respectively, are formed of a solid-heat-conducting lubricant.
  • solid lubricant is meant a solid material having a low coefficient of friction which is comparable to that of a liquid employed for lubrication.
  • Such a solid lubricant may consist of a homogeneous solid material, for example graphite or suitable heavy metal salt, such as MoS,, WS,, NbSe 'or TaSe,. It may also consist of a heterogeneous solid material comprising either exclusively appropriate solid materials ('antifriction alloy on sintered mass based upon metal powder and ethylene polytetrafluoride, for example) or at least one liquid combined with at least one appropriate solid, the combination being such that the material obtained has the characteristics of a solid. This is the case, for example, with a sintered metal or alloy impregnated with a liquid lubricant retained by capillarity in contact with the sintered mass, and hence incapable of separating from it under the normal conditions of use.
  • the solid lubricant When the solid lubricant is in the form of a thin layer distributed over a part of the surface of the connecting element or elements, it may consist, for example, of a heavy metal salt of the type mentioned above, distributed in the form of fine colloidal particles which spontaneously adhere to such surface or are attached thereto by means of an appropriate resin.
  • the lubricant and the mode of attachment must obviously be chosen with due regard, more particularly, to the stability of the connecting element at the service temperature of the roll and of its thermal conductivity in the temperature range reached by the roll.
  • the connecting element or elements and the rotor are advantageously mounted on the stator by simple fittings.
  • the clearance which must be provided between the elements depends mainly upon the expansion coefficients of the materials of which these elements are made. It is advantageously a few hundredths of a millimeter at the service temperature chosen for the roll.
  • Rotation of the rotor may be effected by a shaft mounted along the axis of the roll, by driving. it by means of a pinion on its periphery or by any other appropriate means.
  • the speed at which the rotor may be driven may vary within wide limits, and it is generally higher in proportion as the load applied to the intermediate element is-lower.
  • it is possible to carry out readily a continuous treatment of chemical filaments travelling at the highest speeds at present known.
  • the service temperature of the roll may be measured, if necessary, by any known means.
  • a temperature measuring probe is fixed in relation to the stator, advantageously in the connecting element or in that fixed part of the connecting element which .is closest to the rotor, at a very short distance from the latter, whereby it is possible to detect very precisely the temperature of the internal periphery of the rotor.
  • the temperature probe is therefore disposed at a short distance from the material to be treated. Since the space corresponding to this short distance is occupied by materials of good thermal conductivity, the probe is therefore subject to excellent conditions for an accurate detection of the temperature of the material and for a rapid detection of the temperature variations thereof.
  • the probe is capable of reacting very rapidly to any modification in the adjustment of the heating element or to any thermal disturbance emanating from the outside.
  • a roll according to the invention thus has remarkable temperature stability, so that it is possible to obtain an excellent regularity in the thermal treatment of the material and consequently an excellent constancy of the characteristics of the latter.
  • the treatment is applied to continuous thermoplastic filaments, for which the constancy of the characteristics which may be influenced by thermal treatment, namely dynamometric characteristics, dyeing affinity and contraction, is essential.
  • FIG. 1 is a longitudinal section through one form of roll according to the invention
  • FIG. 2 illustrates the roll of FIG. I mounted for testing purposes
  • FIG. 3 is a view similar to FIG. 1 of a second embodiment of roll according to the present invention.
  • FIG. 4 is a fragmentary view of a portion of a third embodiment and
  • FIG. 5 shows a suitable control arrangement
  • a frame 1 supports the stator, the external periphery of which is formed of a ring 2 consisting of a self-lubricating and sintered bronze containing 25 percent of tin.
  • the ring is impregnated in known manner with a mineral oil having good stability at a temperature of 130 C.
  • a heating member formed of an electrical resistor 3 capable of developing a power of 600 watts at an alternating voltage of 220 volts.
  • the resistor 3 is wound upon an insulating support 4 with a turns density which varies along a generatrix of the support, so as to obtain in operation a constant temperature equal to 100 C. along the whole length of any generatrix of the external periphery of the rotor.
  • the ring 2 is in contact at its external periphery with the internal periphery of the rotor 5, which is in the form of a stainless steel tube of a length of 120 mm., of a thickness of 1.5 mm. and of an external diameter of 51 mm.
  • the clearance between the ring and the rotor is 0.06 mm. in the cold and 0.03 mm. at 100 C., taking into account the thermal expansion difference between these two elements.
  • a pinion 6 Secured to the rotor 5 is a pinion 6, which can drive the rotor at a speed of 4,000 r.p.m., i.e. at a peripheral speed of about 600 meters per minute.
  • the rotor 5 is maintained in position along the axis of the roll by a shoulder 7 at the driving end and at the other end by an end plate 8 fixed to the ring 2. In operation, no trace of oil appears in the gap between the rotor 5 and the plate 8.
  • a heat-resistant platinum probe 9 is disposed in a cylindrical bore in the connecting element and includes two thermocouples (FIG. 5) which are connected to a temperature recording device 24 and to an amplifier and control device 25 for adjusting the current across the resistor 3, the amplitude and control device including a regulator for this purpose.
  • thermocouples FIG. 5
  • the temperature indicated by the probe is constant to within less than 0. 1 C.
  • the stator of the roll of FIG. 1 is mounted on precision ball bearings and the torque necessary for preventing the stator from turning when the rotor is driven by the pinion 6 is measured. It is found that this torque decreases when the driving speed of the rotor increases and that, at 4,000 r.p.m., this torque is distinctly lower than that necessary to rotate the stator mounted on precision ball bearings.
  • FIG. 3 there is illustrated a heating roll having a diameter of 100 mm. and a length of 140 mm. and including a rotor 10 of a thickness of 2.5 mm. in contact over its entire internal periphery II with a ring 12 of oil-impregnated sintered bronze, of the same type as that described with reference to FIG. I, mounted on a tubular support 13 bolted to a frame 14.
  • the internal periphery of the ring 12 is in contact with a cylindrical heating element 15 comprising a coiled resistor (not shown) which developes a power of 1,000 W at a voltage of 220 volts.
  • the rotor' 10 is driven, from the pinion 16, through the shaft 17 and the disc 18, by means of a screw 19 threaded to the disc, of which the shoulder 20 is adapted to slide in the elongate aperture 21 radially cut in the rotor.
  • the rotor can turn freely about the axis of the periphery of the ring 12, which axis is not necessarily identical with that of the shaft 17.
  • the device for holding the shaft in position along its axis which is of a known type and is not shown, axially maintains the rotor.
  • thermocouple 22 substantially midway along the length of the roll.
  • the said thermocouple is connected to a regulator of a type known per se (not shown), the proportional band of which is 1 C.
  • This roll was experimentally operated at a peripheral velocity of 3,000 meters/min. and at a temperature of C.
  • the combination of the above-described regulation with this type of roll makes it possible to limit the temperature variations indicated by the probe to an amplitude of 01C.
  • the connecting element includes an outer ring 2A, a central ring 28 and an inner ring 2C, the rings being coaxial and each formed of an oil impregnated sintered material.
  • the ring 2A is secured to the rotor 5 and the ring 2C is secured to the stator mounting member 30.
  • a thermal treatment roll comprising, in combination:
  • a hollow rotor having an inner and an outer periphery
  • a stator disposed inside said rotor and having an outer p p y;
  • a connecting element composed at least partly of a solid heat conducting, lubricating material in direct contact with the greater part of the outer periphery of the stator and in direct contact with the greater part of the inner periphery of the rotor, effective to provide a conductive heat path between said stator and rotor.
  • said connecting element comprises an inner, an outer and central coaxial sintered metal rings, impregnated with a lubricating oil, said inner ring contacting said outer periphery of said stator and said outer ring contacting the inner periphery of said rotor.
  • a thermal treatment roll comprising, in combination:
  • a hollow rotor having an inner and outer periphery
  • stator disposed inside said rotor and having an outer periphery
  • a connecting element composed at least partly of solid heat conducting lubricating material in direct contact

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Fixing For Electrophotography (AREA)
US813127A 1968-04-03 1969-04-03 Thermal treatment roll Expired - Lifetime US3612170A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR146894 1968-04-03

Publications (1)

Publication Number Publication Date
US3612170A true US3612170A (en) 1971-10-12

Family

ID=8648552

Family Applications (1)

Application Number Title Priority Date Filing Date
US813127A Expired - Lifetime US3612170A (en) 1968-04-03 1969-04-03 Thermal treatment roll

Country Status (11)

Country Link
US (1) US3612170A (xx)
JP (1) JPS5511792B1 (xx)
AT (1) AT311536B (xx)
BE (1) BE730950A (xx)
BR (1) BR6907704D0 (xx)
CH (1) CH509453A (xx)
DE (1) DE1917380C3 (xx)
ES (1) ES365619A1 (xx)
FR (1) FR1574025A (xx)
GB (1) GB1188487A (xx)
NL (1) NL145292B (xx)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902845A (en) * 1973-12-26 1975-09-02 Xerox Corp Metal foam under conformable surface replaceable
US4533808A (en) * 1983-12-28 1985-08-06 Phillips Petroleum Company An induction yarn heater device
US4724305A (en) * 1986-03-07 1988-02-09 Hitachi Metals, Ltd. Directly-heating roller for fuse-fixing toner images
US4776070A (en) * 1986-03-12 1988-10-11 Hitachi Metals, Ltd. Directly-heating roller for fixing toner images
EP0687132A3 (en) * 1994-06-09 1996-05-22 Minnesota Mining & Mfg Heating element comprising a layer capable of being electrically heated
US5760375A (en) * 1996-10-08 1998-06-02 Hall; Timothy G. Heated rollers
WO2002055772A1 (de) * 2001-01-13 2002-07-18 Barmag Ag Galette zum führen, erwärmen und fördern eines fadens
US20020119210A1 (en) * 2001-02-07 2002-08-29 Lutz Maas Device for melt spinning and cooling a filament bundle
US6532748B1 (en) * 2000-11-20 2003-03-18 American Superconductor Corporation Cryogenic refrigerator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2262895B1 (xx) * 1974-02-28 1978-06-16 Rhone Poulenc Textile
EP0119953A3 (de) * 1983-01-26 1985-11-21 Retech AG Einrichtung zur Behandlung von länglichen Gebilden
US7261146B2 (en) 2003-01-17 2007-08-28 Illinois Tool Works Inc Conductive heat-equalizing device
GB2437788B (en) * 2006-05-03 2008-03-19 Mark Darren Shaw Heated drive aid friction roller

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747261A (en) * 1952-05-28 1956-05-29 Gen Motors Corp Bearing and method of making same
US3211893A (en) * 1962-02-19 1965-10-12 Ici Ltd Temperature controlled electrically heated roller
US3390673A (en) * 1967-03-28 1968-07-02 Johns Manville Heated sealing tool
US3414711A (en) * 1965-03-22 1968-12-03 Crylor Heating roller assembly
US3420983A (en) * 1966-09-21 1969-01-07 Henry W Mccard Rotating drum heater for synthetic yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747261A (en) * 1952-05-28 1956-05-29 Gen Motors Corp Bearing and method of making same
US3211893A (en) * 1962-02-19 1965-10-12 Ici Ltd Temperature controlled electrically heated roller
US3414711A (en) * 1965-03-22 1968-12-03 Crylor Heating roller assembly
US3420983A (en) * 1966-09-21 1969-01-07 Henry W Mccard Rotating drum heater for synthetic yarn
US3390673A (en) * 1967-03-28 1968-07-02 Johns Manville Heated sealing tool

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902845A (en) * 1973-12-26 1975-09-02 Xerox Corp Metal foam under conformable surface replaceable
US4533808A (en) * 1983-12-28 1985-08-06 Phillips Petroleum Company An induction yarn heater device
US4724305A (en) * 1986-03-07 1988-02-09 Hitachi Metals, Ltd. Directly-heating roller for fuse-fixing toner images
US4776070A (en) * 1986-03-12 1988-10-11 Hitachi Metals, Ltd. Directly-heating roller for fixing toner images
EP0687132A3 (en) * 1994-06-09 1996-05-22 Minnesota Mining & Mfg Heating element comprising a layer capable of being electrically heated
US5726425A (en) * 1994-06-09 1998-03-10 Minnesota Mining And Manufacturing Company Tubular Heating element with elastic electrode
US5760375A (en) * 1996-10-08 1998-06-02 Hall; Timothy G. Heated rollers
US6532748B1 (en) * 2000-11-20 2003-03-18 American Superconductor Corporation Cryogenic refrigerator
WO2002055772A1 (de) * 2001-01-13 2002-07-18 Barmag Ag Galette zum führen, erwärmen und fördern eines fadens
US20020119210A1 (en) * 2001-02-07 2002-08-29 Lutz Maas Device for melt spinning and cooling a filament bundle
US6893243B2 (en) 2001-02-07 2005-05-17 Saurer Gmbh & Co. Kg Device for melt spinning and cooling a filament bundle

Also Published As

Publication number Publication date
FR1574025A (xx) 1969-07-11
DE1917380A1 (de) 1969-10-23
GB1188487A (en) 1970-04-15
BE730950A (xx) 1969-10-02
NL6904666A (xx) 1969-10-07
CH509453A (fr) 1971-06-30
DE1917380B2 (de) 1978-01-26
ES365619A1 (es) 1971-02-16
BR6907704D0 (pt) 1973-01-02
JPS5511792B1 (xx) 1980-03-27
NL145292B (nl) 1975-03-17
DE1917380C3 (de) 1978-10-05
AT311536B (de) 1973-11-26

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