US3882578A - Method and apparatus for transferring crimped tow - Google Patents

Method and apparatus for transferring crimped tow Download PDF

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Publication number
US3882578A
US3882578A US394075A US39407573A US3882578A US 3882578 A US3882578 A US 3882578A US 394075 A US394075 A US 394075A US 39407573 A US39407573 A US 39407573A US 3882578 A US3882578 A US 3882578A
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US
United States
Prior art keywords
conveyor
tow
chute
crimped tow
stuffer
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
US394075A
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English (en)
Inventor
Nobuharu Izawa
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.)
Teijin Ltd
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Teijin Ltd
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Filing date
Publication date
Priority claimed from JP8911072A external-priority patent/JPS5611772B2/ja
Priority claimed from JP8303273A external-priority patent/JPS5544181B2/ja
Application filed by Teijin Ltd filed Critical Teijin Ltd
Application granted granted Critical
Publication of US3882578A publication Critical patent/US3882578A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 present invention relates to a method and an apparatus for transferring a stuffer crimped synthetic fiber tow onto a heating conveyor, and more particularly for arranging the tow erect on the heating conveyor from a stuffer crimper.
  • a synthetic fiber tow is fed to a crimper after drawing for crimping, transferred onto a conveyor after the crimping and dried and heat set with a heater where a heat transfer medium circulates.
  • Apparatuses for transferring the crimped tow onto the conveyor are disclosed, for example, in Japanese Pat. Publication No. 3,312/65 and Japanese Pat. Publication No. 22,883/71.
  • a conveyor is arranged below a stuffer crimper and the tow discharged from the crimper is introduced into a J-shaped stationary chute the entry and exit of which are twisted through about 90 degrees and the cross section of which is in order of increasing size from entry to exit.
  • the tow is passed through the chute by gravity and stood erect on the conveyor to the width of the exit of the chute.
  • the crimped tow discharged from the crimper is uniformly stuffed in a stationary chute with a swinging cylinder and stood erect on a conveyor to the width of the exit of the stationary chute.
  • the object of the present invention is to provide an improved method and an efficient apparatus for transferring a synthetic fiber tow from stuffer crimper to heating conveyor.
  • Another object of the present invention is to provide a method and an apparatus for standing a crimped tow discharged from a stuffer crimper erect and pleating it down to the substantially uniform traverse length and density on a running conveyor in order that a heat-set tow having a uniform and favorable crimp may be secured.
  • Still another object of the present invention is to provide a method and an apparatus for standing a crimped tow smoothly and accurately erect on a conveyor.
  • a further object of this invention is to obtain a heatset tow having a highly favorable crimp with a comparatively simple apparatus.
  • a method for transferring a stuffercrimped tow onto a running conveyor in which the tow is stood erect on the surface of the running conveyor and caused to make reciprocating motions substantially horizontally and almost perpendicular to the running direction of the conveyor.
  • an apparatus for transferring a stuffer crimped tow onto a running conveyor characterized by a chute having an entry to receive the crimped tow from a stuffer crimper and an exit to discharge it onto the running conveyor, twisting the crimped tow entering from the entry through about 90 and leading it to the exit and means of traversing at least part of the chute such that the exit makes reciprocating turns within the desired range substantially horizontally and almost perpendicular to the running direction of the conveyor.
  • FIG. 1 is a perspective view of one embodiment of the invention.
  • FIGS. 2 to 4 are simplified side views of modified embodiments of the invention.
  • drawn tow T 100,000 150,000 total denier comprising synthetic filaments such as polyamide, polyolefin, polyester and polyacrylonitrile is fed to stuffer crimper l and crimped into crimped tow CT.
  • the resultant crimped tow CT is transferred onto running conveyor 2 with stainless steel nets or a porous plate.
  • the crimped tow is transferred to a heat setter (not shown) where a heat transfer medium is circulating with the conveyor and undergoes drying, heat setting and the like.
  • Crimped tow CT discharged from stuffer crimper 1 is transferred onto transfer plate 3 without being subjected to any substantial change in the as-discharged shape, introduced in entry 5 of chute 4 and discharged onto conveyor 2 from exit 6 of the chute via a hollow path of the chute.
  • the tow may, however, be directly led from crimper l to the entry of chute 4. In this case, it is advisable to make part of the upper wall of the chute detachable or capable of being opened because the tip of the tow which has not undergone crimping should be removed.
  • Chute 4 has entry 5 and exit 6 and its inner hollow path has a twist of about around the longitudinal axis of the path in order that the crimped tow entering from entry 5 may be twisted through about 90 degrees and led to exit 6.
  • Crimped tow CT which has entered chute 4 from entry 5 in the parallel state with respect to the surface of conveyor 2 is twisted through about 90 while passing through the hollow path of chute 4 and discharged from exit 6 almost perpendicular (that is, erect) to the surface of conveyor 2. It is desirable that the cross sectional shape of the hollow path of chute 4 corresponds to that of the crimped tow, for instance a rectangle and the cross sectional area is slightly greater than that of the crimped tow.
  • the hollow path is preferably of a rectangle, which .has a width of (1 1+ 5) l (l 30) mm and a height of (h 5) h mm (h 30) mm.
  • the cross sectional area of entry 5 is slightly greater than that of other portions of the chute and takes a funnel shape such that crimped tow CT easily enters the chute from transfer plate 3.
  • Chute 4 and transfer plate 3 are preferably of stainless steel in view of its anti-rust and sliding properties.
  • Chute 4 is pivotally mounted on support shaft 7 and makes reciprocating turns around support shaft 7 by a suitable means designated by 8. Therefore, exit 6 is traversed almost perpendicular to the running direction of conveyor 2 to the desired traverse length.
  • a suitable means designated by 8. As the means 8 of traversing chute 4, various well-known types besides the illustrated type may be in use. In the embodiment, the whole chute 4 is traversed, but the chute may be longitudinally divided to give reciprocating turns only to that portion which is on the side of exit 6, and traverse the exit 6 also.
  • exit 6 makes reciprocating motions substantially horizontally and almostperpendicular to the running direction of conveyor 2 to the desired traverse length and the crimped tow is folded on the conveyor 2 in the erect state and in the traverse length.
  • the arranged state, density and the like depend upon the reciprocating speed of exit 6 and the running speed of conveyor 2, which are to be optionally selected by the feed speed of crimped tow CT to be supplied to the entry of chute 4.
  • the filling density of the crimped tow on the conveyor is rendered great and disappearance of crimp is prevented by lowering fairly the running speed of conveyor 2.
  • the traversing speed of exit6 is substantially the same as the feed speed of crimped tow CT (discharge speed of tow from exit 6) and consequently the tow is transferred onto the conveyor from the crimper in theas-discharged state.
  • the crimped tow discharged from exit 6 is traversed on the conveyor perpendicular to the surface of the conveyor and it is advisable to traverse the tow with a slight forward tilting with respect to the surface of conveyor 2 (tilting slightly toward the running direction of the conveyor) such that the crimped tow immediately after its movementonto the conveyor does not fall down.
  • tow-filling portion 9 of the conveyor is slightly tapered with angle a and crimped tow CT discharged from exit 6 and traversed on conveyor 2 is arranged on the conveyor such that the plane of the tow (wall surface of erect, band-like tow) is tilted with respect to the perpendicular direction toward the running direction of conveyor 2 through angle 6.
  • the tilt is modified to be almost perpendicular where conveyor 2 starts to be horizontal.
  • crimped tow CT discharged from chute 4 is led onto the conveyor while it is slightly tilted, the crimped tow will not fall toward the chute and the subsequent tow will be filled continuously and stably.
  • Angle of inclination 6 is to 45, preferably to 30. It is found by experiments that with the angle less from the perpendicular direction through 5 to than 5, the tow tends to fall and with the angleabove i 45 it. cannot smoothly restore the tilting when it reaches the horizontal portion of conveyor 2, resulting in the poor circulation of hotair, etc. at the timeof the subsequent drying and heat treatment. With the angle of inclination at 10 to 30 theresults are best.
  • stuffer crimper l and conveyor 2 are substantially on a level with each other.
  • crimped tow discharged from crimper 1 may bele'd" I onto conveyor 2 with the use of a curved chute, for in stance, a Jshaped chute.
  • crimper I and conveyor 2 are .prefera I bly located ona level with each other.
  • a method of transferring a stuffer crimped tow onto a running conveyor characterized by standingthe stuffer crimped tow erect with respect to the surface of the running conveyor and traversing :the tow substantially horizontally and almost perpendicular to therunning direction of the conveyorand thereby arranging the tow on the conveyor in a pleated-erect pattern comprising:
  • the apparatus for transf erring a stuffer crimped tow as set forth in claim 3 further comprising means of i tilting the erect, crimped tow from the perpendicular direction tothe running direction of the conveyor through 5 to 45 to thereby prevent the crimped tow to be arranged on the conveyorfrom .falling down.
  • the apparatus for transferring a stuffer crimped tow as set forth in claim 3 further comprising a transfer plate between the stuffer crimper and the entry of the chute.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US394075A 1972-09-07 1973-09-04 Method and apparatus for transferring crimped tow Expired - Lifetime US3882578A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8911072A JPS5611772B2 (it) 1972-09-07 1972-09-07
JP8303273A JPS5544181B2 (it) 1973-07-25 1973-07-25

Publications (1)

Publication Number Publication Date
US3882578A true US3882578A (en) 1975-05-13

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Application Number Title Priority Date Filing Date
US394075A Expired - Lifetime US3882578A (en) 1972-09-07 1973-09-04 Method and apparatus for transferring crimped tow

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US (1) US3882578A (it)
CH (2) CH1292073A4 (it)
DE (1) DE2345299B2 (it)
IT (1) IT998562B (it)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324353A (en) * 1980-03-31 1982-04-13 Hoechst Fibers Industries, Div. Of American Hoechst Corp. Apparatus for handling textile filamentary material
US4365395A (en) * 1980-03-28 1982-12-28 Hoechst Fibers Industries, Division Of American Hoechst Corporation Apparatus for handling textile filamentary material
US20060191117A1 (en) * 2003-11-19 2006-08-31 American Linc Corporation System, apparatus, and method of reducing production loss having compressor
US20070084179A1 (en) * 2003-11-19 2007-04-19 Hoover D L System, apparatus, and method of reducing production loss for textured yarn and other related methods
US9670603B2 (en) 2013-12-03 2017-06-06 Saurer Germany Gmbh & Co. Kg Device for shaping a thread-like material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204301A (en) * 1978-04-26 1980-05-27 Greentex Incorporated Strand handling system and method therefor
DE3200271A1 (de) * 1982-01-07 1983-07-21 Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München Verfahren und vorrichtung zum thermischen fixieren von gestreckten, gekraeuselten endlosfaeden aus thermoplastischem kunststoff
DE3415683A1 (de) * 1984-04-27 1985-10-31 Bayer Ag, 5090 Leverkusen Verfahren zum fixieren und kuehlen gekraeuselter faserbaender

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112054A (en) * 1961-02-07 1963-11-26 Fleissner G M B H Fa Apparatus for orienting textile bands
US3302839A (en) * 1965-03-25 1967-02-07 Du Pont Tow-diverting chute for depositing running tow on a conveyor belt
US3466716A (en) * 1967-06-02 1969-09-16 Du Pont Twisted chute for improved tow stacking

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112054A (en) * 1961-02-07 1963-11-26 Fleissner G M B H Fa Apparatus for orienting textile bands
US3302839A (en) * 1965-03-25 1967-02-07 Du Pont Tow-diverting chute for depositing running tow on a conveyor belt
US3466716A (en) * 1967-06-02 1969-09-16 Du Pont Twisted chute for improved tow stacking

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365395A (en) * 1980-03-28 1982-12-28 Hoechst Fibers Industries, Division Of American Hoechst Corporation Apparatus for handling textile filamentary material
US4324353A (en) * 1980-03-31 1982-04-13 Hoechst Fibers Industries, Div. Of American Hoechst Corp. Apparatus for handling textile filamentary material
US20060191117A1 (en) * 2003-11-19 2006-08-31 American Linc Corporation System, apparatus, and method of reducing production loss having compressor
US20070084179A1 (en) * 2003-11-19 2007-04-19 Hoover D L System, apparatus, and method of reducing production loss for textured yarn and other related methods
US7228604B2 (en) * 2003-11-19 2007-06-12 American Linc Corporation System, apparatus, and method of reducing production loss having compressor
US9670603B2 (en) 2013-12-03 2017-06-06 Saurer Germany Gmbh & Co. Kg Device for shaping a thread-like material

Also Published As

Publication number Publication date
IT998562B (it) 1976-02-20
CH570484B5 (it) 1975-12-15
DE2345299B2 (de) 1977-06-08
CH1292073A4 (it) 1975-07-15
DE2345299A1 (de) 1974-03-28

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