EP0571323A1 - Dispositif pour le frisage continu des fils thermoplastiques - Google Patents

Dispositif pour le frisage continu des fils thermoplastiques Download PDF

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Publication number
EP0571323A1
EP0571323A1 EP93810311A EP93810311A EP0571323A1 EP 0571323 A1 EP0571323 A1 EP 0571323A1 EP 93810311 A EP93810311 A EP 93810311A EP 93810311 A EP93810311 A EP 93810311A EP 0571323 A1 EP0571323 A1 EP 0571323A1
Authority
EP
European Patent Office
Prior art keywords
guide means
plug
crimping
pairs
roller
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Withdrawn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
EP93810311A
Other languages
German (de)
English (en)
Inventor
Werner Nabulon
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0571323A1 publication Critical patent/EP0571323A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet
    • 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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes

Definitions

  • the invention is in the field of textile technology and relates to a device according to the preamble of the independent claim, which is used for the continuous crimping of threads made of a thermoplastic material.
  • Devices for the continuous crimping of threads made of a thermoplastic material are described, for example, in European Patent Publication No. 310890 by the same applicant.
  • the devices described have a stationary crimping nozzle with a delivery channel and a nozzle outlet opening and a rotating plug delivery roller.
  • the ruffling nozzle is arranged essentially tangentially to the plug conveyor roller in such a way that the nozzle outlet opening and a guide fork arranged in the region of this opening protrude between two perforated lateral guide means running parallel to one another around the circumference of the plug conveyor roller.
  • the stuffer box is limited on the one hand by the stationary parts of the guide fork, and on the other hand by the lateral guide means rotating with the plug conveyor roller.
  • the thread is conveyed by means of a heated conveying medium under pressure through the conveying channel against the nozzle outlet opening and is simultaneously heated.
  • the conveyed medium relaxes and the thread builds up in the stuffer box to form a plug which is guided away on the plug conveyor roller by the lateral guide means.
  • the speed of the thread in the feed channel is greater than the peripheral speed of the plug conveyor roller (plug speed).
  • the side guide means are perforated so that the medium can relax in the area of the nozzle outlet opening.
  • rows of radially arranged needles have proven to be advantageous as lateral guide means.
  • the plug conveyor roller In most applications, a plurality of threads running in parallel are processed, the plug conveyor roller then having a plurality of pairs of lateral guide means for each plug, which are parallel to one another and spaced apart.
  • cross-flows arise in operation, in particular for rolls with several pairs of needles, which can have a disruptive effect on plug formation. It also shows that such plug conveyor rollers, especially those with rows of needles (needle rollers), are difficult to handle and are easily damaged when replaced, especially when hot.
  • thermoplastic threads for which the first-mentioned disadvantage is eliminated. Furthermore, it is the object of the invention to also remedy the second-mentioned disadvantage with only small modifications, that is to say to provide a device for continuous crimping for which the replacement and handling of the plug conveyor roller, in particular in the form of a needle roller, is simplified and more straightforward compared to such devices according to the prior art.
  • Figure 1 schematically shows a device for the continuous crimping of thermoplastic threads. It has a crimping nozzle 1 with a delivery channel 11 and a nozzle outlet opening 12, a needle roller 2 with at least one pair of needle rows 21 and a cooling roller 3.
  • the ruffling nozzle 1 is arranged such that the delivery channel 11 with the nozzle outlet opening 12 opens tangentially to the needle roller 2 and between the rows of needles 21.
  • a guide fork 13 is, for example, molded onto the crimping nozzle.
  • An upper and a lower guide part of the guide fork together with the rows of needles form a stuffer box 4.
  • FIG. 2 shows in detail and parallel to the axis of the needle roller, the area of the stuffer box 4. From this, the arrangement of the guide fork and its upper part 41 facing away from the needle roller 2 and its lower part 42 facing the needle roller 2 is between the two rows of needles 21 'and 21 "can be seen.
  • the device according to the invention is now designed in such a way that the ruffling nozzle and the needle roller can be moved apart such that the needle roller can be easily removed in the axial direction.
  • the needle roller is designed in such a way that it can easily be deposited on almost any support surface, which greatly simplifies its handling, especially when it is hot.
  • the crimping nozzle is moved out of the area of the needle rows, the needle roller is dismantled, deposited and an exchange roller is installed.
  • the roll change can be carried out in a minimum of time.
  • the simple depositability of the roller is important because it has an increased temperature during operation and must be dismantled and deposited in this state.
  • the needle roller carries on its circumference the rows of needles, or other perforated lateral guide elements for guiding the plug. These are very sensitive, which means that the roller cannot be supported on the needles without damage. For this reason, the needle roller according to the invention carries a protective ring on both sides outside the pair of needle rows, which is arranged parallel to the needle rows and spaced from them. In contrast to the rows of needles, the protective rings are not broken, which means more stable.
  • They are arranged at a distance from the rows of needles in such a way that they do not influence the expansion of the medium in the area of the stuffer box, and have an at least equal or larger outer radius than the rows of needles in such a way that the needle roller, when deposited with an axis of rotation parallel to a support surface , not on the rows of needles, but on the protective rings.
  • each pair of needle rows is advantageously separated from the adjacent pairs of needle rows by a protective ring.
  • a protective ring is also provided on the outermost pairs of needles. In this way, each pair of needle rows runs separately between two protective rings.
  • FIG. 3 now shows an exemplary embodiment of a needle roller for a crimping device according to the invention.
  • the needle roller 2 is fastened, for example, with an easily accessible screw 22 to a shaft 23 driving it.
  • the needle roller 2 carries, for example, two pairs of rows of needles 21.1 and 21.2.
  • Protected rings 27.1, 27.2 and 27.3 are provided on both sides of a pair of needles, the outer diameter of which is larger than the outer diameter of the pairs of needles 21.1 and 21.2, that is to say they protrude by about one millimeter, for example.
  • the stuffer boxes are better aerodynamically separated from one another and the rows of needles are protected from lateral access during operation, and the needle roller can be easily manipulated when disassembled.
  • the pairs of needles are advantageously each mounted on a support ring (28.1, 28.2), the support ring having an axial extent that is greater than the axial extent of the pair of needle rows.
  • support rings can be arranged in different numbers side by side.
  • the supporting rings can be provided on their outer edges with corner grooves 29, in which the protective rings are mounted, or the protective rings can simply be provided and mounted as intermediate rings between supporting rings without corner grooves.
  • protective rings of double thickness or two protective rings must be used between two such rings (27.2), while protective rings of single thickness or only one protective ring (27.1 and 27.3) must be used on the outside.
  • Figures 4 and 5 show in detail a support ring 28 with a pair of rows of needles 21 and corner grooves 29. Dash-dotted lines are also indicated by protective rings 27.1 and 27.2, wherein the protective ring 27.1 (single thickness) closes the needle roller axially, the protective ring 27.2 (double thickness) represents the limitation of the axial area of a pair of needles to the area of another pair of needles.
  • protective rings is not limited to plug conveyor rollers (needle rollers) equipped with pairs of rows of needles, but can also be used to protect any other type of perforated lateral guide means on a plug conveyor roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP93810311A 1992-05-20 1993-04-28 Dispositif pour le frisage continu des fils thermoplastiques Withdrawn EP0571323A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH161492 1992-05-20
CH1614/92 1992-05-20

Publications (1)

Publication Number Publication Date
EP0571323A1 true EP0571323A1 (fr) 1993-11-24

Family

ID=4214559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810311A Withdrawn EP0571323A1 (fr) 1992-05-20 1993-04-28 Dispositif pour le frisage continu des fils thermoplastiques

Country Status (3)

Country Link
US (1) US5375311A (fr)
EP (1) EP0571323A1 (fr)
JP (1) JPH0610224A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572515B1 (fr) * 1984-10-25 1993-06-18 Canon Kk Dispositif de detection de position
JPS61160714A (ja) * 1985-01-09 1986-07-21 Canon Inc 焦点距離可変レンズ
JPS61160715A (ja) * 1985-01-09 1986-07-21 Canon Inc 焦点距離可変レンズ
CH689040B5 (de) * 1992-11-19 1999-02-26 Rieter Ag Maschf Verfahren und Vorrichtung zum Texturieren von thermoplastischen Fäden.
US6311375B1 (en) * 2000-07-27 2001-11-06 Gilbert Patrick Method of needle punching yarns
DE10202788A1 (de) * 2002-01-25 2003-07-31 Rieter Ag Maschf Texturieranlage und Texturierdüse hierfür
CN112639579B (zh) 2018-08-31 2023-09-15 奇跃公司 用于增强现实装置的空间分辨的动态调暗

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363041A (en) * 1964-06-09 1968-01-09 Uniroyal Inc Method of jet crimping for texturing thermoplastic yarn
EP0310890A1 (fr) * 1987-10-05 1989-04-12 Maschinenfabrik Rieter Ag Procédé et appareil pour le frisage en continu de fils thermoplastiques

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1198035A (en) * 1967-08-23 1970-07-08 Asahi Chemical Ind Process and Apparatus for Producing Crimped Filaments
JPS4918493A (fr) * 1972-06-09 1974-02-18
US3899811A (en) * 1972-07-22 1975-08-19 Neumuenster Masch App Crimping of synthetic plastic filaments
JPS5534563A (en) * 1978-08-31 1980-03-11 Daiwa Spinning Co Ltd Manufacture of special bulky yarn
US4930198A (en) * 1982-03-12 1990-06-05 Allied-Signal Inc. Apparatus for texturing continuous yarn
US4462143A (en) * 1982-03-12 1984-07-31 Allied Corporation Method for controlling texture level in a moving cavity texturing process
US4519116A (en) * 1983-03-16 1985-05-28 Allied Corporation Yarn texturing by moving cavity jet with fluid removal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363041A (en) * 1964-06-09 1968-01-09 Uniroyal Inc Method of jet crimping for texturing thermoplastic yarn
EP0310890A1 (fr) * 1987-10-05 1989-04-12 Maschinenfabrik Rieter Ag Procédé et appareil pour le frisage en continu de fils thermoplastiques

Also Published As

Publication number Publication date
JPH0610224A (ja) 1994-01-18
US5375311A (en) 1994-12-27

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