EP0159285A2 - Vorrichtung zum Kräuseln von Filamentkabeln mit hoher Geschwindigkeit - Google Patents

Vorrichtung zum Kräuseln von Filamentkabeln mit hoher Geschwindigkeit Download PDF

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Publication number
EP0159285A2
EP0159285A2 EP85730047A EP85730047A EP0159285A2 EP 0159285 A2 EP0159285 A2 EP 0159285A2 EP 85730047 A EP85730047 A EP 85730047A EP 85730047 A EP85730047 A EP 85730047A EP 0159285 A2 EP0159285 A2 EP 0159285A2
Authority
EP
European Patent Office
Prior art keywords
filaments
nip
feed rolls
wall portion
tow
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Withdrawn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
EP85730047A
Other languages
English (en)
French (fr)
Other versions
EP0159285A3 (de
Inventor
Tokio Okada
Shigezo Kojima
Haruhisa Tani
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.)
Polymer Processing Research Institute Ltd
Bouligny Co
Original Assignee
Polymer Processing Research Institute Ltd
Bouligny Co
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 Polymer Processing Research Institute Ltd, Bouligny Co filed Critical Polymer Processing Research Institute Ltd
Publication of EP0159285A2 publication Critical patent/EP0159285A2/de
Publication of EP0159285A3 publication Critical patent/EP0159285A3/de
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to an apparatus for crimping a tow of filaments at a high speed to produce filaments, yarns, staple fibers or the like of various lengths.
  • the fiber crimper comprising a pair of feed rolls and a stuffer box disposed adjacent thereto has been widely used to crimp a tow of filaments of at least several thousands total deniers.
  • the tow has been fed by and between the rolls into the stuffer box at about 100 m per minute.
  • the recent requirement tends toward a high-speed in the crimping operation.
  • the present invention seeks to provide an apparatus for crimping a tow of filaments at a high-speed without causing any hard lump-or fusion in the tow as the latter is crimped.
  • the present invention further seeks to provide a high-speed tow crimper having durable inner wall portions which are subjected to frictional engagement with a tow of filaments.
  • an apparatus for crimping a tow of filaments comprising a pair of cylindrical feed rolls disposed to form a nip therebetween and having a pair of coplanar end surfaces on each side thereof and a stuffer box disposed adjacent to said nip and having a stuffing chamber for the passage of the tow of filaments and communicating at one end with said nip, said stuffer box including an inner wall portion for frictional engagement with the filaments as the latter is moved in a region located immediately downstream of said nip and defined jointly by said inner wall portion and respective peripheral surfaces of said feed rolls characterized in that said inner wall portion confronts to said pair of coplanar end surfaces across said nip with a slight clearance therebetween and is movable in a direction substantially the same as the direction of advance of the filaments in said region while renewing with respect to the frictional engagement with the filaments.
  • a tow crimper includes a pair of cylindrical feed rolls 10, 10 mounted in superposed relation to form a nip A therebetween, and a stuffer box 12 disposed adjacent to the nip A holding a slight clearance to the peripheral and end surfaces of the rolls 10, 10.
  • the stuffer box 12 includes a pair of parallel spaced upper and lower plates 13, 13 and a pair of parallel spaced side plates 14, 14 disposed on opposite sides of the upper and lower plates to define therebetween an elongate crimping chamber 15 for the passage of the filaments 16 and communicating at one end with the nip A.
  • each of the side plates 14, 14 comprises a metallic endless belt trained around a pair of vertical guide rollers 17 to travel along the crimping chamber 15.
  • the side plate or belt 14 has a flat portion confronting to a pair of coplanar end surfaces 18, 18 of the feed rolls 10, 10 in the vicinity of the nip A with a slight clearance between such flat portion and the end surfaces 18, 18.
  • a tow of filaments 16 is fed by and between the feed rolls 10, 10 into the crimping chamber 15 and is discharged from the stuffer box 12 in the shape of a cake.
  • the metallic endless belts 14, 14 are driven, by friction with the filaments 16, to move in the direction of the arrow a ( Figures 1 and 3).
  • a separate driving means 11 ( Figure 3) may be provided for positively circulating the endless belts 14.
  • the circulation velocity of the belts 14 may be lower than one-fifth of the peripheral speed of the feed rolls 10.
  • the metallic endless belts 14 are cooled naturally during circulating movement thereof, enhanced effect is achievable by the use of an independent cooling means disposed adjacent to the guide rollers 17, 17 or by introducing a coolant, such as water or oil, to the surfaces of the belts 14 for cooling them as well as lowering the friction between the belts 14 and the filaments 16.
  • a coolant such as water or oil
  • the present inventors have conducted some experiments of replacing and renewing merely the portion of the structural members which are subjected to the greatest friction with the filaments.
  • the tow of filaments having passed through the nip A is pressed strongly during its advance against the inner walls of the stuffer box that are opposed to the end surfaces 18, 18 of the rolls 10, 10.
  • the velocity of the tow of filaments is reduced in accordance with further advance so that the area of contact between the filaments and the inner walls comes to increase.
  • the present inventors have contributed the following method on the grounds that a satisfactory result may be achieved by moving, in the average direciton of movement of the filaments, inner wall portions of the stuffer box 12 that are located immediately behind of the nip A and have a length of 10 mm or so.
  • a modified tow crimper shown in Figures 4 and 5 is similar to the crimper shown in Figures 1 to 3 but differs therefrom in that a pair of rolatable disk-like presser plates 19, 19 is employed for side wall portions of a stuffer box 20.
  • the stuffer box 20 has a conventional structure and no description is necessary.
  • Each of the disk-like presser plates 19, 19 is rotatably disposed on one side of the rolls 10,10 in the vicinity of the nip A and has an inner surface extending parallel to a pair of coplanar end surfaces 18, 18 of the rolls 10, 10 with a slight clearance therebetween as shown in Figure 5.
  • the presser plates 19, 19 have a pair of aligned central axes 21, 21 extending parallel to rotational axes 22, 22 of the respective rolls 10, 10.
  • the central axes 21, 21 are spaced from a vertical plane X - X including the axes 22, 22 toward the filament outgoing side by a distance on the order of 1 to 10 mm as represented by e in Figure 4 and are retained in positions spaced apart by more than 2 mm as represented by b from a horizontal plane passing through the nip A.
  • a tow of filaments 15 having passed through the nip A comes to advance as indicated by the arrow a in Figure 6 while grazing or rubbing against a triangular region ABC of each presser plate 19.
  • a separate driving means 11' ( Figure 4) may be provided for positively rotating the disk 19 in the direction indicated by the arrow d.
  • the axes 21, 21 may be positioned in alignment with the vertical plane X - X. However to space the axes 21, 21 toward the filament approaching side from the vertical plane X - X is not preferable.
  • Each of the presser plates 19, 19, as shown in Figure 7, has a central stepped shaft 23 rotatably mounted in a bearing box 24 via a pair of roller bearings 25, the bearing box 24 including an exterally threaded cylindrical portion secured to a bracket 26 by a pair of nuts 27, 28.
  • the bearing box 24 thus constructed is axially movable while the nuts 27, 28 are loosened, so that the clearance between the end faces 18 of the rolls 10, 10 and the presser plate 19 can be adjusted.
  • a modified bearing unit shown in Figure 8 includes a hollow cylinder 29 fixed to a-support 30- and having a longitudinal bore 31 in which a cylindrical bearing box 32 is slidably fitted.
  • the cylinder 29 has an air supply inlet 33 through which compressed air is supplied into the bore 31 to move the bearing box 32 and hence a presser plate 34 toward end surfaces 18 of rolls 10, 10.
  • the forward movement of the bearing box 32 is prevented by an adjusting nut 35.
  • the presser plate 34 and the bearing box 32 have a pair of aligned axial through-holes 36, 37 communicating with each other.
  • a pressurized fluid is introduced through the holes 37, 36 into the clearance between the presser plate 34 and the end surfaces 18 of the rolls 10, 10 to thereby cool the presser plate 34 as well as to enhance lubricating effect between the filaments and the presser plate 34.
  • an oil cap 38 is disposed above the presser plate 19 for supplying a coolant such as water or finishing oil to the clearance between the end surfaces 18 of the rolls 10 and the presser plate 19 to thereby cool the latter.
  • the coolant also serves as a lubricant between the presser plate 19 and the filaments to diminish the friction therebetween.
  • Supply of water or oil may be executed by any other method on condition that substantially a fixed amount thereof is fed.
  • the disk-like presser plate Since the disk-like presser plate is rotated, the movement of its surface is not exactly coincident with the direction of advance of the filaments. However, in the region where the filaments cause the greatest friction, the plate surface is moved substantially parallel to the filaments while being renewed with respect to the friction. Thus, fusion of the filaments can be prevented to eventually bring about uniform wear of the presser plate with resultant remarkably increased durability.
  • the present invention it becames possible to eliminate occurence of fusion on the lateral portions of the tow of filaments, and any kind of fibers can be crimped adequately by adjusting holding pressure in the stuffer box.
  • mere introduction of a coolant or the like to the wall of the stuffer box is also allowable to attain required cooling effect.
  • the inner wall portion of the stuffer box which confronts the end surfaces of the feed rolls across the nip is self-movable while renewing with respect to the friction engagement with the filaments, so that such inner wall portion is automatically cooled during its movement.
  • the durability of the component elements, such as the endless belts or the disk can be enhanced to consequently realize an improved stuffing box type crimper which is capable of performing a stable operation continuously at a speed of 1000 m or more per minute.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP85730047A 1984-04-03 1985-03-29 Vorrichtung zum Kräuseln von Filamentkabeln mit hoher Geschwindigkeit Withdrawn EP0159285A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP66471/84 1984-04-03
JP6647184A JPS60215827A (ja) 1984-04-03 1984-04-03 高速運転用圧充箱式巻縮付与機

Publications (2)

Publication Number Publication Date
EP0159285A2 true EP0159285A2 (de) 1985-10-23
EP0159285A3 EP0159285A3 (de) 1986-03-05

Family

ID=13316729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85730047A Withdrawn EP0159285A3 (de) 1984-04-03 1985-03-29 Vorrichtung zum Kräuseln von Filamentkabeln mit hoher Geschwindigkeit

Country Status (2)

Country Link
EP (1) EP0159285A3 (de)
JP (1) JPS60215827A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6160173A (en) * 1996-10-09 2000-12-12 Cargill Incorporated Process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof
CN113166981A (zh) * 2018-12-04 2021-07-23 欧瑞康纺织有限及两合公司 用于运行卷曲设备的方法和卷曲设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7713896B2 (ja) * 2022-02-24 2025-07-28 宇部エクシモ株式会社 捲縮装置、捲縮繊維製造装置、捲縮繊維の製造方法、及び一対の側面部材

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808518A (en) * 1955-11-04 1959-02-04 American Cyanamid Co Tow of polyacrylonitrile filamentary material and production thereof
US2862279A (en) * 1956-04-10 1958-12-02 Allied Chem Tow crimping apparatus
BE563224A (de) * 1956-12-24
US3353223A (en) * 1963-08-19 1967-11-21 Eastman Kodak Co Method and apparatus for crimping
GB1571521A (en) * 1976-11-25 1980-07-16 Vepa Ag Apparatus for crimping synthetic yarns and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6160173A (en) * 1996-10-09 2000-12-12 Cargill Incorporated Process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof
CN113166981A (zh) * 2018-12-04 2021-07-23 欧瑞康纺织有限及两合公司 用于运行卷曲设备的方法和卷曲设备

Also Published As

Publication number Publication date
EP0159285A3 (de) 1986-03-05
JPS60215827A (ja) 1985-10-29

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Inventor name: OKADA, TOKIO

Inventor name: KOJIMA, SHIGEZO