EP0705925A2 - Dispositif de chauffage à guides-fil interchangeables - Google Patents

Dispositif de chauffage à guides-fil interchangeables Download PDF

Info

Publication number
EP0705925A2
EP0705925A2 EP95114959A EP95114959A EP0705925A2 EP 0705925 A2 EP0705925 A2 EP 0705925A2 EP 95114959 A EP95114959 A EP 95114959A EP 95114959 A EP95114959 A EP 95114959A EP 0705925 A2 EP0705925 A2 EP 0705925A2
Authority
EP
European Patent Office
Prior art keywords
carrier
groove
thread
heating device
thread guides
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.)
Granted
Application number
EP95114959A
Other languages
German (de)
English (en)
Other versions
EP0705925A3 (fr
EP0705925B1 (fr
Inventor
Johannes F. Dr. Bruske
Siegfried Morhenne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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 Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0705925A2 publication Critical patent/EP0705925A2/fr
Publication of EP0705925A3 publication Critical patent/EP0705925A3/fr
Application granted granted Critical
Publication of EP0705925B1 publication Critical patent/EP0705925B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines

Definitions

  • the invention relates to a heating device for heating a thread with the features of the preamble of claim 1.
  • heating devices are provided through which a thread is passed.
  • the thread is guided in a heated groove.
  • a heating device can have several grooves, in each of which a thread is guided.
  • a heating device is known from EP 0 412 429 B1, which has a heated groove in which the thread is guided along a zigzag-shaped line.
  • the zigzag-shaped line is spanned by several thread guides, a thread guide being arranged at each turning point of the line.
  • the known heating devices are operated at a temperature which is significantly above 300 ° C. At these temperatures, some organic compounds evaporate. In contrast, inorganic compounds are deposited on the thread guides. The deposit occurs because of the thread comes into contact with the surface of each thread guide. These deposits increase over time. An increase in the deposits means that the thread no longer necessarily follows a predetermined thread guide. However, the thread guide in the heating device has an influence on the quality of the thread. As a result, the quality of the thread can be influenced by the deposits.
  • the present invention has for its object to develop the known heating device so that cleaning the thread guide is simplified. Another object of the invention is to reduce the manufacturing outlay and thus also the manufacturing costs of a heating device.
  • the heating device according to the invention is characterized in that the thread guides are designed as pins and are fastened to a solid, good heat-conducting support. Due to the good thermal conductivity, there is no insulating effect when the groove is heated.
  • the massive design of the carrier gives the structural unit a dimensional stability, which is particularly advantageous when it is replaced and the subsequent cleaning process.
  • the assembly can be easily removed from the groove of the heating device. After removing the carrier with the thread guides, they can be cleaned without any problems, since the thread guides are easily accessible from all sides. In addition to the easier cleaning of the thread guides, no complex measures are required to arrange the thread guides in the channel.
  • the thread guides are gem. of the embodiments according to claim 2 arranged on the carrier so that the thread is guided in a zigzag shape.
  • the distances between the thread guides are preferably made the same.
  • the clamping force between the unit and the groove walls is absorbed by the thread guides. This significantly reduces the contact area between the structural unit and the side walls of the groove.
  • the arrangement with two thread guides lying one behind the other on one side has the advantage that the wrap angle per thread guide is reduced by 50%.
  • the design of the heating device according to claim 3 is characterized in that the thread guides are attached to the carrier so that they are supported indirectly on the opposite side wall of the groove. For this purpose, a correspondingly curved section can follow the thread guide, the z. B. L-, U- or T-shaped can be bent.
  • the thread guides are arranged on at least one carrier which is deformed in a zigzag shape and is supported on the opposite side wall. With this design, each thread guide is pressed against the side wall of the groove by the carrier, as a result of which the thread guide assumes a stable position.
  • the force that the wearer exerts on the thread guides can be adjusted or elastic properties of the carrier can be set.
  • the clamping of the thread guides should be so large that a displacement of the thread guides from their predetermined position does not occur due to the thread running along the thread guides.
  • the same thread guides are preferably arranged on both sides of the carrier.
  • the width of the carrier and the width of a thread guide correspond approximately to the width of the groove. It is z. B. possible to attach each thread guide to a carrier assigned only to it. Carriers with thread guide are then fitted into the groove. This means that the relative position of the thread guides to each other in the longitudinal direction has to be readjusted each time. This effort is avoided in the embodiments according to claims 7 or 8.
  • a structural unit is first produced, which consists of a longitudinal band and the thread guides attached to it.
  • the tape preferably has plane-parallel side surfaces to which the thread guides are attached, e.g. B. can be welded.
  • the thread guides are offset on both sides of the tape un in the longitudinal direction.
  • the resilient band When inserting the tape with the thread guides into the groove, the resilient band is tensioned zigzag-shaped in one embodiment, since the total width of two thread guides lying next to one another and the band is in any case wider than the groove, at least by the width of the band wider.
  • the band is deflected in a zigzag-shaped line and, due to its elasticity, presses the thread guides on one and the other side against the associated groove walls.
  • the carrier with the thread guides arranged in the groove the carrier is forced into a zigzag line.
  • the thread guides are pressed with one of their sides against a side wall of the groove.
  • the zigzag-shaped thread run is now determined by the tolerances of the groove, the thread guide and the carrier. Due to the arrangement of the thread guide, the thread is also securely supported with respect to the groove base without the thread being able to be clamped at the connection points between each thread guide and the carrier.
  • a non-resilient band is used or the resilience has no effect.
  • This version is particularly advantageous if a loss of spring action is to be expected due to the high temperatures.
  • One thread guide and the width of the band fill the entire width of the groove.
  • the two versions described above have the advantage that the units consisting of tape and thread guides can be pulled out of the groove either from the top of the groove or in the longitudinal direction. It is not necessary to readjust the carrier and thread guide again after cleaning. When pulling out in the longitudinal direction, the groove is also cleaned, so that an exchange / assembly unit can be inserted again immediately.
  • the carriers are arranged one above the other in the groove. Only thread guides are arranged on each carrier, which are supported against the same side wall of the groove.
  • the individual carriers can be releasably connected to one another to form a structural unit.
  • This proposal with regard to the formation of the arrangement of the carrier and the thread guide has the advantage that individual carriers can be exchanged with the thread guides if these z. B. are worn out.
  • the flexible carrier preferably has a zigzag-shaped design. This design has the advantage that the carrier is supported at several points on the side wall of the groove.
  • the embodiment according to claim 9 has the advantage that the clamping force is absorbed only by the carrier or adjusted by the choice of fit between the carrier and the groove. In addition, with this arrangement, the contact between the thread guides and the side wall can be avoided, which results in an advantageous low surface temperature of the thread guides.
  • the carrier is held both positively and positively in the base of the groove.
  • the carrier expediently has a square cross section.
  • This design of the carrier has the advantage that the connection of the carrier to the individual thread guides is simplified. Furthermore, the carrier is supported on the side wall along a line.
  • the carrier which is quadrangular in cross section, can be a sheet metal strip which has resilient properties.
  • the elastic properties of the carrier are independent of the cross section and the shape of the carrier.
  • the carrier and the thread guides preferably consist of a metallic material. This has the advantage that the thread guide with the carrier material, for. B. can be connected by welding or soldering. In the case of carriers with great dimensional stability, thread guides made of non-metallic material can also be connected to the carrier in a simple manner by means of non-positive or positive connections.
  • the thread guides can have a hard material coating.
  • the zigzag-shaped guidance of the thread can also be achieved in that several carriers with thread guides are arranged indirectly or directly one behind the other. By arranging several longitudinal sections one behind the other, different heating zones can advantageously be formed with different distances between the thread guides.
  • a structural unit which consist of a carrier 1 and the thread guides 2 and 3, are shown in plan view.
  • the thread guides 2 and 3 have a circular cross section.
  • Other cross sections are also possible.
  • cross sections can be selected which face the thread with a running surface with a large radius, as is shown by way of example in FIG. 1.3 and also in FIG. 5.
  • a flat steel or a strip steel - as shown in FIGS. 1.1 and 1.3 - having the width B can be used as the carrier 1.
  • the width B and the width of the groove are approximately the same size or adjusted so that the structural unit is held in the groove with a force fit.
  • the clamping forces are chosen so that the thread guides in their position remain unchanged during operation.
  • the beams are solid, ie they are rod-shaped with a square, rectangular, round, semicircular or polygonal cross section.
  • the thread guides 2 and 3 are attached to the surface of the carrier 1 of the carrier.
  • the attachment can be done as a press connection - as shown in Fig. 2 - or by welding or soldering.
  • the thread guides 2 and 3 are designed as pins which are arranged on the surface of the carrier 1 so that they are alternately or in pairs on one and on the opposite longitudinal side of the carrier 1.
  • the distance between the sides of the thread guides 2 and 3 facing away from each other is thus approximately equal to the width B, so that the thread guides 2 and 3 can be supported in the heating device on the side walls 6 and 7 of the groove 4 (see FIG. 4.1).
  • the thread guides 2 and 3 have a diameter which is greater than half the width B. A zigzag-shaped thread course is thus achieved.
  • a carrier 1 which has the shape of a longitudinal band with two parallel side flanks
  • thread guides 2 and 3 are arranged on both sides, as shown in FIG. 1.2.
  • the carrier 1 can be a round wire or a rectangular band or band with parallel side flanks.
  • the thread guides 2, 3 are fastened equidistantly to one another on the carrier.
  • the thread guides 2, 3 can be connected to the carrier 1 by welding, soldering or the like.
  • the thread guides shown in FIG. 1.2 have the same diameter.
  • the width B which is composed of the diameter of the thread guide 2 or 3 and the width of the carrier 1, is somewhat larger than the width of the channel 4, which is formed in a heating device 5.
  • the thread guide 2 or 3 has a diameter with the size of the width B at the end facing the carrier, as shown in FIG. 2.
  • the thread guide has almost an elliptically shaped cross section with a width that is greater than half the width B.
  • the thread 8 touches the thread guide in a large radius, so that there is a large contact length with a small wrap angle.
  • the L-shape of the thread guide prevents the thread 8 from coming into contact with the carrier 1 and thus preventing overheating.
  • the thread guide 2 or 3 is pressed into the bore 16 of the carrier 1 with a pin 15.
  • the chamfer 14 is attached to the free end of the thread guide 2 or 3.
  • a heating device 5 with an elongated, U-shaped groove can be seen from FIG. 3.1.
  • the carrier 1 with thread guides 2, 3 from FIG. 1.2 is inserted into this groove.
  • the carrier 1 is forced into a zigzag-shaped line.
  • the individual thread guides 2, 3 are supported on a side wall 6 or 7 of the groove 4.
  • the carrier 1 is alternately supported on the side wall 7 or 6. The prerequisite is that the band which forms the backing is elastic and remains elastic even when it is heated to more than 400 ° C.
  • FIG. 3.2 shows a heating device in plan view, in which the running of a thread 8 is also shown.
  • FIG. 3.3 shows a heating device 5 with an elongated U-shaped groove, at the bottom of which a support 1 according to FIG. 1.1 is inserted.
  • the Thread guides 2 and 3 are arranged in pairs alternately on one side and the opposite side of the carrier. With this arrangement, the wrap angle per thread guide is reduced by 50%. This means that the thread receives less friction, which in turn manifests itself in a lower change in thread tension and thus higher thread quality.
  • Fig. 4.1 shows the vertical section through this embodiment.
  • the heating device is also an elongated rail (which is shown in Fig. 3.2 - however shortened).
  • a longitudinal groove with the side walls 6, 7 parallel to one another is made in the rail.
  • a structural unit is clamped into the longitudinal groove, which consists of a band-shaped carrier 1 and thread guides 2 and 3 attached to it laterally.
  • the thread guides are offset from one another on both sides and arranged at equal intervals.
  • the carrier 1 is deformed in a serpentine manner by clamping the assembly, so that the assembly fits into the groove under the elastic clamping forces.
  • the heater is heated by a resistance heater 9.
  • the resistance heater 9 is designed as a rod. This rod is introduced into a bore which is introduced into the base plate of the radiator in the longitudinal direction.
  • caps 10 are C-shaped. They encompass the upper longitudinal edge of one flank of the groove and engage in small longitudinal grooves which are introduced into the side walls 6, 7 of the groove flanks on both sides of the upper longitudinal edges. This description also applies to Figures 1.2 and 3.1.
  • FIG. 4.2 shows a vertical section through a heating device with a plate-shaped carrier 1.
  • the thread guides 2 and 3 are arranged on the carrier 1, as shown in FIG. 1.1, the distance between the sides of the thread guides 2 and 3 facing away from one another being smaller than the width B. There is therefore no contact between the side walls 6 and 7 of the groove 4 and the thread guides 2 and 3.
  • the heating of the thread guides 2 or 3 by heat conduction is no longer possible, so that a lower surface temperature is established on the thread guide 2 or 3.
  • the side walls 6 and 7 of the groove 4 are provided with an undercut 11 and 12, respectively.
  • the carrier 1 engages in this undercut, so that the structural unit is held in the groove 4 in a form-fitting manner.
  • the exemplary embodiment according to FIGS. 5, 6 in turn has the elongated heating element, in which a longitudinal groove with parallel side walls 7, 6 is introduced.
  • a structural unit is inserted into this longitudinal groove.
  • This unit again consists of a longitudinal support 1 with laterally attached thread guides 2, 3.
  • the thread guides 2, 3 are arranged in the longitudinal direction at the same distance, but on both sides of the band-shaped support and offset from one another.
  • the band-shaped carrier is made zigzag.
  • a thread guide is attached in each corner.
  • the diameter of a thread guide and the width of the carrier 1 correspond exactly to the width of the groove.
  • this unit can be fitted into the longitudinal groove without lateral play.
  • the assembly is in turn held by caps 10 in the groove. Reference is made to the description of FIG. 4.1.
  • the carrier has holes at its ends 21 (see FIG. 6).
  • a suitable tool can be inserted into these holes. With the help of this tool it is possible to pull the carrier out of the groove in the longitudinal direction. This also cleans the groove.
  • a new carrier with thread guide pins attached to it is inserted into the groove, so that the operation of the heating device for cleaning is not interrupted by cooling.
  • the carrier with thread guiding devices removed from the heating device can now be cleaned in a cleaning bath.
  • two heaters 9 are arranged in the bottom of the heating rail. This results in a more uniform heating across the width of the radiator.
  • two thread guides 19 and 20 are shown with an - essentially - semicircular cross section. You touch the thread with a large radius, so that there is a large contact length with a small wrap angle. Other cross-sectional shapes, e.g. B. elliptical, are conceivable. Such thread guides replace or alternate with the circular pins.
  • FIG. 7 shows a side view of a structural unit with a solid support and thread guides - as already described in FIG. 1.1 or FIG. 1.3.
  • a floor spacer 13 is located between two adjacent thread guides 2, 3. This prevents the thread from touching the carrier.
  • the high surface temperature of the carrier lying in the groove base could cause the thread to overheat.
  • FIG 8 shows a heating device with an elongated, U-shaped groove, in which one is divided into two longitudinal sections 17 and 18 Carrier is introduced.
  • the thread guides 2 and 3 on the longitudinal sections 17 and 18 have a different length spacing from one another.
  • the heating device thus has two zones, which are advantageously used for temperature and thread quality optimization.
EP95114959A 1994-10-07 1995-09-22 Dispositif de chauffage à guides-fil interchangeables Expired - Lifetime EP0705925B1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE4435961 1994-10-07
DE4435961 1994-10-07
DE19505169 1995-02-16
DE19505169 1995-02-16
DE19507194 1995-03-02
DE19507194 1995-03-02
DE19521650 1995-06-14
DE19521650 1995-06-14
DE19525534 1995-07-13
DE19525534 1995-07-13

Publications (3)

Publication Number Publication Date
EP0705925A2 true EP0705925A2 (fr) 1996-04-10
EP0705925A3 EP0705925A3 (fr) 1998-01-07
EP0705925B1 EP0705925B1 (fr) 2001-06-13

Family

ID=27511773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114959A Expired - Lifetime EP0705925B1 (fr) 1994-10-07 1995-09-22 Dispositif de chauffage à guides-fil interchangeables

Country Status (6)

Country Link
US (1) US5666797A (fr)
EP (1) EP0705925B1 (fr)
KR (1) KR100334846B1 (fr)
CN (1) CN1061389C (fr)
DE (1) DE59509332D1 (fr)
TW (1) TW420156U (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751245A2 (fr) * 1995-06-27 1997-01-02 B a r m a g AG Dispositif de chauffage pour chauffer un fil en mouvement
WO2000073557A2 (fr) * 1999-05-29 2000-12-07 Barmag Ag Dispositif de chauffage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0656963B1 (fr) * 1992-08-25 1999-07-28 B a r m a g AG Dispositif de chauffage reglable d'un fil courant
US5918455A (en) * 1994-11-22 1999-07-06 Icbt Roanne Drawing/false-twist-texturizing process and novel type of oven enabling it to be implemented
DE59702549D1 (de) * 1996-04-03 2000-12-07 Barmag Barmer Maschf Heizeinrichtung mit auswechselbarem Fadenführereinsatz
JP3490844B2 (ja) * 1996-05-30 2004-01-26 東レエンジニアリング株式会社 仮撚機の冷却装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412429B1 (fr) 1989-08-09 1994-11-17 Barmag Ag Dispositif de chauffage

Family Cites Families (9)

* 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
US4567721A (en) * 1983-11-01 1986-02-04 Teijin Limited Method for producing textured yarn
US5138829A (en) * 1990-02-10 1992-08-18 Teijin Seiki Co., Ltd. Apparatus for heat treating a synthetic yarn
GB9023549D0 (en) * 1990-10-27 1990-12-12 Rieter Scragg Ltd Yarn heating arrangement
JP3164180B2 (ja) * 1992-07-24 2001-05-08 帝人製機株式会社 合成繊維糸条の熱処理装置
JPH05125629A (ja) * 1991-10-28 1993-05-21 Murata Mach Ltd 延伸仮撚機のヒータ
DE4318675A1 (de) * 1992-06-06 1993-12-09 Barmag Barmer Maschf Metallische Fadenheizschiene
DE4318674A1 (de) * 1992-06-06 1993-12-09 Barmag Barmer Maschf Vorrichtung zum Erhitzen eines laufenden Fadens
JP2598215B2 (ja) * 1993-03-31 1997-04-09 帝人製機株式会社 仮撚機の冷却装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412429B1 (fr) 1989-08-09 1994-11-17 Barmag Ag Dispositif de chauffage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751245A2 (fr) * 1995-06-27 1997-01-02 B a r m a g AG Dispositif de chauffage pour chauffer un fil en mouvement
EP0751245A3 (fr) * 1995-06-27 1999-07-21 B a r m a g AG Dispositif de chauffage pour chauffer un fil en mouvement
WO2000073557A2 (fr) * 1999-05-29 2000-12-07 Barmag Ag Dispositif de chauffage
WO2000073557A3 (fr) * 1999-05-29 2001-05-31 Barmag Barmer Maschf Dispositif de chauffage
US6479799B2 (en) 1999-05-29 2002-11-12 Barmag Ag Yarn heating device

Also Published As

Publication number Publication date
US5666797A (en) 1997-09-16
KR100334846B1 (ko) 2002-10-31
CN1129265A (zh) 1996-08-21
KR960014441A (ko) 1996-05-22
DE59509332D1 (de) 2001-07-19
CN1061389C (zh) 2001-01-31
EP0705925A3 (fr) 1998-01-07
TW420156U (en) 2001-01-21
EP0705925B1 (fr) 2001-06-13

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