EP1518953A2 - Verfahren und Vorrichtung zum Sengen von Garnen - Google Patents

Verfahren und Vorrichtung zum Sengen von Garnen Download PDF

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Publication number
EP1518953A2
EP1518953A2 EP04104617A EP04104617A EP1518953A2 EP 1518953 A2 EP1518953 A2 EP 1518953A2 EP 04104617 A EP04104617 A EP 04104617A EP 04104617 A EP04104617 A EP 04104617A EP 1518953 A2 EP1518953 A2 EP 1518953A2
Authority
EP
European Patent Office
Prior art keywords
thread
air
singeing
order
nozzle
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
EP04104617A
Other languages
English (en)
French (fr)
Other versions
EP1518953A3 (de
EP1518953B1 (de
Inventor
Mario Pizzinato
Raoul Panizzut
Alvaro Cattaruzza
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.)
Ricambi Tessili Rite - SpA
Original Assignee
Ricambi Tessili Rite - SpA
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 Ricambi Tessili Rite - SpA filed Critical Ricambi Tessili Rite - SpA
Publication of EP1518953A2 publication Critical patent/EP1518953A2/de
Publication of EP1518953A3 publication Critical patent/EP1518953A3/de
Application granted granted Critical
Publication of EP1518953B1 publication Critical patent/EP1518953B1/de
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
    • D02J3/00—Modifying the surface
    • D02J3/12—Modifying the surface by removing projecting ends of fibres
    • D02J3/16—Modifying the surface by removing projecting ends of fibres by singeing

Definitions

  • the present invention concerns a method and a device for singeing yarns.
  • the invention concerns a method and a device wherein the yarn emerging from the singeing burner is subjected to a treatment with air in order to eliminate, or at least reduce the quantity of, the residual ash, down and dirt which remain on the yarn after singeing.
  • the yarn Before being wound into reels and sent to the dyeing processes, or other desired finishing treatment, it is known to subject the yarn to at least one pass through a singeing machine, by means of which a certain percentage of the hairs and lumps are burnt and then removed from the body of the yarn.
  • this treatment is performed in order to obtain quality yarns, characterized by a high effect of shininess and compact feel.
  • the singeing treatment is usually quantified by a so-called singeing index, which is calculated as the ratio between the weight of the yarn at inlet to the singeing machine and its weight at outlet therefrom.
  • This index is usually set at the start of the treatment, normally at a value that is variable between 5 and 10%, and the operating parameters of the machine are adjusted accordingly, which are, mainly, quantity of gas and/or air fed, and speed of transit of the yarn. Obviously, the greater the speed of transit of the yarn through the machine, the smaller the quantity of hairs and lumps removed will be, and hence the smaller the singeing index; vice versa, if the speed of transit is lower, the singeing index rises in a correlated manner.
  • the quantity of gas and/or air fed to the burner of the singeing machine also directly influences the singeing index as defined above.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain other advantages.
  • a singeing device comprises at least a blower device arranged downstream of the singeing burner and able to deliver a jet of forced air substantially in the direction of the yarn passing through, in order to remove from the body of the yarn the residual ash and other dirt before the yarn is wound onto the reel.
  • the blower device is associated with suction and discharge means able to collect the ash and dirt removed from the body of the yarn and to convey them to suitable collection means.
  • the blower device comprises a substantially closed chamber through which the yarn passes, associated with means to introduce pressurized air.
  • Said introduction means are able to generate a turbulent flow of air, advantageously with a cyclonic development, which at least partly hits the yarn passing through and causes the ash and other dirt to be removed from the body of the yarn.
  • This flow of air with its cyclonic development also has the function of generating an effect of combing and compacting the residual hairs, for example the shorter ones, remaining attached to the body of the yarn after the singeing pass, so that at outlet from the air treatment said residual hairs adhere closely to the body of the yarn and oriented according to the orientation of the flow of cyclonic air.
  • a further effect generated by the flow of air delivered at outlet from the burner is to increase the head in the stack of the burner itself. Thanks to this, the flame of the burner is more oxygenated and this causes an improved efficiency of the singeing process and hence, in general, an improved overall efficiency of the machine. In fact, Applicant has found an increase in the singeing index with the same operating conditions of the machine, that is, speed of passage and feed of fuel and comburent air to the burner.
  • the means to generate the flow of air comprise means to feed the air and nozzles communicating with the transit chamber of the yarn, and oriented in a left-hand or right-hand direction, according to the orientation to be assumed by the cyclonic flow.
  • the means to generate the flow of air comprise nozzles oriented both in a right-hand direction and also in a left-hand direction, and able to be selectively activated so as to induce the desired direction of orientation of the cyclonic flow.
  • a singeing device according to the invention is denoted generally by the reference number 10 and is installed on a spooler machine of a known type and only shown partly.
  • a thread 11 is fed from one or more suitable supports, not shown, and made to pass through a burner 12 equipped with a stack 13, inside which, in known manner, a flame is generated which burns the hairs present on the body of the yarn, particularly the longer ones.
  • the thread 11 emerging from the stack 13 passes through the blower device 14 according to the invention, which will be described in detail hereafter, slides around a thread-guiding wheel 15, and is wound on a reel 16 by means of a guide pulley 17.
  • suction assembly 18 In a position of cooperation with the blower device 14 there is a suction assembly 18 including suction apertures 19.
  • the blower device 14 consists of a metal block 20 including a longitudinal hole 21 defining a substantially closed chamber through which the thread 11 passes after it emerges from the stack 13. Said longitudinal hole 21 advantageously communicates with the outside through a slit 22 of extremely small size in order to facilitate the initial operations to thread the thread. Communicating with the longitudinal hole 21 there is at least a nozzle 23 to introduce air from the rear, connected to means to feed pressurized air, of a known type and not shown here.
  • the means to feed the air can be connected to the relative nozzle 23 by means of a metal connector 24 attached to the block 20 by means of screws 25. Between the connector 24 and the block 20 there is at least a rubber washer 26 with a sealing and stabilizing function. There are also pneumatic sealing means of the O-ring type 27 on the connector 24.
  • the nozzle 23 is oriented in a direction substantially tangential to the development of the longitudinal hole 21 through which the thread passes, so that the air introduced through it creates a turbulence with a cyclonic development, indicated by the arrows in fig. 2a, with a right-hand or left-hand orientation according to the direction in which the blower device 14 is mounted.
  • the turbulent flow with cyclonic development inside the longitudinal hole 21 through which the thread passes causes the removal of the ash 29, dust and other dirt still anchored to the body of the yarn after the singeing pass, and the discharge thereof through the suction aperture 19.
  • this turbulent flow causes an action of combing and compacting of the shorter hairs 30, not burnt and still anchored to the body of the yarn after the singeing pass, so that the thread 11 emerging from the blower device 14 is smooth, shiny, compact and without surface down.
  • This turbulent and cyclonic flow also causes an increase in the head in the stack 13, which leads to an increase in the oxygenation of the flame in the burner 12 and hence a greater efficiency of combustion in the burner 12.
  • the improved efficiency of combustion causes considerable improvements in terms of productivity of the machine and/or operating costs in terms of feed of fuel or comburent air with the same index of singeing to be obtained.
  • nozzles there are two nozzles, respectively 123a and 123b, oriented so as to create respectively a cyclonic flow with a right-hand and left-hand development.
  • the two nozzles 123a and 123b are associated with respective means to feed the air which can be driven selectively, in alternating or simultaneous manner, according to the desired effect of orientation and/or compacting that is to be obtained on the residual hairs anchored to the body of the thread 11.
  • the simultaneous action of the two nozzles 123a and 123b can also amplify the effect of removing the ash, down and other dirt from the body of the thread 11.
  • a nozzle 223 has a direction located on a plane inclined with respect to the plane on which the hole 22 lies, in order to be oriented tangentially both in a horizontal and also in a vertical direction with respect to the hole 22.
  • This configuration allows both to further amplify the effect of removing the ash and dirt, and also to give the residual hairs a still more compacted orientation against the body of the thread 11.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Cleaning In General (AREA)
EP20040104617 2003-09-26 2004-09-23 Verfahren und Vorrichtung zum Sengen von Garnen Expired - Lifetime EP1518953B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITUD20030193 ITUD20030193A1 (it) 2003-09-26 2003-09-26 Procedimento e dispositivo per la gasatura di filati.
ITUD20030193 2003-09-26
ITUS20030193 2003-09-26

Publications (3)

Publication Number Publication Date
EP1518953A2 true EP1518953A2 (de) 2005-03-30
EP1518953A3 EP1518953A3 (de) 2005-10-12
EP1518953B1 EP1518953B1 (de) 2010-05-26

Family

ID=34179366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040104617 Expired - Lifetime EP1518953B1 (de) 2003-09-26 2004-09-23 Verfahren und Vorrichtung zum Sengen von Garnen

Country Status (3)

Country Link
EP (1) EP1518953B1 (de)
DE (1) DE602004027331D1 (de)
IT (1) ITUD20030193A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102477705A (zh) * 2010-11-22 2012-05-30 贵州钢绳厂附属企业公司 天然纤维绳芯表面针刺去除方法及装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901285C (de) * 1941-12-05 1954-01-11 Franz Mueller Maschinenfabrik Garn-Gassengmaschine
US3704493A (en) * 1969-03-21 1972-12-05 Ici Ltd Heat treatment of yarns
GB1332276A (en) * 1971-06-12 1973-10-03 Palitex Project Co Gmbh Yarn scraping roller
US3874046A (en) * 1973-04-24 1975-04-01 Mettler Soehne Maschf Device for singeing threads
US4858288A (en) * 1985-04-02 1989-08-22 Burlington Industries, Inc. Method vortex action yarn hairiness reduction
JPH06264323A (ja) * 1993-03-09 1994-09-20 Kanebo Ltd 糸条の毛羽焼き機における炎の保護装置
US5351472A (en) * 1990-01-10 1994-10-04 Murata Kikai Kabushiki Kaisha Fluffing suppressing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901285C (de) * 1941-12-05 1954-01-11 Franz Mueller Maschinenfabrik Garn-Gassengmaschine
US3704493A (en) * 1969-03-21 1972-12-05 Ici Ltd Heat treatment of yarns
GB1332276A (en) * 1971-06-12 1973-10-03 Palitex Project Co Gmbh Yarn scraping roller
US3874046A (en) * 1973-04-24 1975-04-01 Mettler Soehne Maschf Device for singeing threads
US4858288A (en) * 1985-04-02 1989-08-22 Burlington Industries, Inc. Method vortex action yarn hairiness reduction
US5351472A (en) * 1990-01-10 1994-10-04 Murata Kikai Kabushiki Kaisha Fluffing suppressing device
JPH06264323A (ja) * 1993-03-09 1994-09-20 Kanebo Ltd 糸条の毛羽焼き機における炎の保護装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 678 (C-1290), 20 December 1994 (1994-12-20) -& JP 06 264323 A (KANEBO LTD; others: 01), 20 September 1994 (1994-09-20) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102477705A (zh) * 2010-11-22 2012-05-30 贵州钢绳厂附属企业公司 天然纤维绳芯表面针刺去除方法及装置

Also Published As

Publication number Publication date
ITUD20030193A1 (it) 2005-03-27
EP1518953A3 (de) 2005-10-12
EP1518953B1 (de) 2010-05-26
DE602004027331D1 (de) 2010-07-08

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