EP0109923A2 - Appareil pour friser des matières fibreuses textiles - Google Patents

Appareil pour friser des matières fibreuses textiles Download PDF

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Publication number
EP0109923A2
EP0109923A2 EP83730116A EP83730116A EP0109923A2 EP 0109923 A2 EP0109923 A2 EP 0109923A2 EP 83730116 A EP83730116 A EP 83730116A EP 83730116 A EP83730116 A EP 83730116A EP 0109923 A2 EP0109923 A2 EP 0109923A2
Authority
EP
European Patent Office
Prior art keywords
plug
clearance
recess
doctor blade
pressurized fluid
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Withdrawn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
EP83730116A
Other languages
German (de)
English (en)
Other versions
EP0109923A3 (fr
Inventor
Okada Tokio
Kojima Shigezo
Tani Haruhisa
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 EP0109923A2 publication Critical patent/EP0109923A2/fr
Publication of EP0109923A3 publication Critical patent/EP0109923A3/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Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to an apparatus for crimping textile fibrous materials such as filaments, yarns, tows for staple fibers and the like.
  • the stuffing box is liable to be deformed by heat or pressure, and the gasket may cause contamination of the rolls.
  • the present invention seeks to provide an apparatus for crimping a textile fibrous material, which comprises a mechanism for preventing intrusion of the textile fibrous material by exterting a pressurized fluid thereon without any contamination of nip rolls or any deformation of a stuffing box that may otherwise be induced by heat or pressure.
  • an apparatus for crimping a textile fibrous material comprising: a pair of nip rolls cooperating in exerting pressure on the textile fibrous material passing therebetween along a longitudinal path; a stuffing box disposed adjacent to and downstream of said nip rolls and having a pair of spaced doctor blades and a pair of side plates defining jointly with said doctor blades a stuffing chamber for the passage therethrough of the textile fibrous material, each of said doctor blades having'an end surface confronting with the peripheral surface of a corresponding one of said nip rolls with a clearance therebetween, said clearance having an inner end opening to said stuffing chamber and an outer end opening to the outside air, characterized by means defining a channel extending in each said doctor blade for the passage therethrough of a pressurized fluid, said channel defining means including an outlet opening to said end surface and communicating with said clearance near said inner end thereof; and means for substantially preventing leakage of the pressurized fluid from said stuffing chamber through said clearance to the outside air
  • an apparatus 20 comprises a pair of upper and lower nip rolls 21, 22 cooperating in exerting pressure on a textile fibrous material 23 passing therebetween along a longitudinal path, and a stuffing box 24 disposed downstream of and adjacent to the nip rolls 21, 22 for crimping the textile fibrous material 23 supplied therein by the nip rolls 21, 22.
  • the textile fibrous material 23 to be crimped includes filaments, yarns, tows for staple fibers and the like.
  • the lower nip roll 22 is fixedly supported on a shaft 25 adapted to be driven by a suitable drive means (not shown) to rotate the roll 22 in the crockwise direction ( Figure 1) at a predetermined peripheral speed.
  • the upper nip roll 21 is fixedly supported on a shaft 26 which is movably-supported for vertical movement toward and away from the shaft 25 to adjust a nipping force at the nipping point between the nip rolls 21, 22.
  • the nip roll 21 is driven by a suitable drive means (not shown) in the counter-crockwise direction (Figure 1) at the same peripheral speed as the nip roll 22.
  • the stuffing box 24 is in the form of substantially hollow rectangular box with opposite ends open for the passage therethrough of the fibrous textile material 23.
  • the box 24 is composed of pair of spaced upper and lower doctor blades 27, 28 and a pair of side plates 29, 30 disposed one on each side of the superposed doctor blades 27, 28 to define jointly therewith a stuffing chamber 31.
  • Each of the doctor blades 27, 28 has, at one end adjacent to a corresponding one of the nip rolls 21, 22, an arcuate end surface 32 complementary in contour with the peripheral surface of the corresponding nip roll 21, 22 and facing to the same with an arcuate clearance 33 therebetween.
  • each doctor blade 27, 28 jointly define a knife-edge 35 which serves to scrape the textile fibrous material 23 off the peripheral surface of the respective nip roll 21, 22 while the latter is rotated.
  • the lower doctor blade 28 is fixed in position, while the upper doctor blade 27 is movable in both horizontal and vertical directions so as to keep the arcuate clearance 33 constant even when the upper nip roll 21 is vertically displaced with respect to the lower nip roll 22.
  • the side plates 29, 30 are secured to opposite side surfaces of the stationary lower doctor blade 28 with clearance 36, 36 therebetween.
  • Each side plate 29, 30 has a tapered extension 37 projecting beyond the end surface 32 of the doctor blade 27, 28 and having an inner surface 38 extending parallel to one of opposite end surfaces 39 of the respective rolls 21, 22 with a clearance 40 therebetween.
  • the extension 37 of one side plate 30 includes a presser plate 41 movably supported on a base 42 and movable toward the end surfaces 39 of the respective nip rolls 21, 22.
  • each of the doctor blades 27, 28 has a transversely extending through-hole 43 adjacent to the arcuate end surface 32, a supply hole 44 communicating at one end with the through-hole 43 and having the opposite end adapted to be connected to a source (not shown) for supplying a pressurized fluid such as compressed air or pressurized steam, and a transversely extending slot 45 opening at one side to the arcuate end surface 32 along the length thereof and at the other side to the through-hole 43.
  • each doctor blade 27, 28 may have a series of orifices (not shown) instead of the slot 45, each orifice opening at one end to the arcuate end surface 32 and at the opposite end to the through-hole 43.
  • a stream of pressurized fluid is supplied by the source through the holes 43, 44 and the slot 45 or the orifices into the arcuate clearance 33.
  • the slot 45 or the orifices are disposed near the knife-edge 35 as at A so that the stream of pressurized fluid can flow mostly into the stuffing chamber 31, effectively preventing intrusion of the textile fibrous material into the arcuate clearance 33.
  • the arcuate clerarance 33 is open at its inner end B to the stuffing chamber 31 while being open at its outer end C to the outside air.
  • Each doctor blade 27, 28 has a transversely extending recess 46 disposed in the arcuate end surface 32 between the outer end C of the arcuate clearance 33 and the slot 45 or the orifices.
  • a sealing block or a plug 47 is loosely received in the recess 46 with a pressure chamber 48 defined therebetween, and partly projects from the arcuate end surface 32 into the clearance 33.
  • the plug 47 is normally held in light contact or nearly out of contact with the peripheral surface of the nip roll 21.
  • the recess 46 has a transverse axis X - X' extending across the axis of the roll 21, and the plug 47 has an arcuate outer side surface 49 complementary in contour with the peripheral surface of the roll 21.
  • Such higher pressure is applied from the pressure chamber 48 to a rear or inner side surface of the plug 47 via a narrow gap existing between a lower surface of the plug 47 and a lower wall of the recess 46, thereby automatically pressing the plug 47 lightly against the peripheral surface of the nip roll 21 to substantially close a gap therebetween or to maintain the gap at a further reduced spacing.
  • the width or thickness of the plug 47 is so selected as to obtain such a minute gap spacing, and the recess 46 is so formed as to have a proper width in accordance therewith.
  • Figures 5 and 7 show a modification according to the invention, wherein a pair of coiled compression springs 53, 53 is received in the recess 46 behind the plug 47 and acts between the doctor blade 27 and the plug 47 to urge the latter against the peripheral surface of the nip roll 21.
  • a pair of coiled compression springs 53, 53 is received in the recess 46 behind the plug 47 and acts between the doctor blade 27 and the plug 47 to urge the latter against the peripheral surface of the nip roll 21.
  • Figures 6 and 8 show another modification in which the doctor blade 27 includes a supply passage 54 communicating at one end with the recess 46 and having the opposite end adapted to be connected to a source (not shown) for supplying a pressurized fluid through the passage 54 into the pressure chamber 48.
  • the plug 47 thus can be pressed by the fluid against the peripheral surface of the nip roll 21.
  • the supply passage 54 may be modified as the one shown in Figure 9 at 55.
  • the supply passage 55 communicates at one end with the pressure chamber 48 and at the opposite end with the supply hole 44 through which the pressurized fluid is supplied to the slot 45 or the orifices and then to the arcuate clearance 33.
  • a groove 56, 57 extends in one of confronting surfaces of each doctor blade 27, 28 and each side plate 29, 30, and a plug 58, 59 is loosely received in the groove 56, 57 and urged against the opposite surface of the side plate 29 or the doctor blade 28.
  • the groove 56, 57 is disposed at a position closer to the outside than the transverse through-hole 43 ( Figure 4) through which the pressurized fluid is sent into the clearance 36. With this arrangement, a required amount of the pressurized fluid is effectively reduced.
  • a substantially U-shaped groove 60 is formed in an inner surface of a side plate 30' in the vicinity of the nipping point between the rolls 21, 22.
  • a complementary plug 61 is loosely received in the groove 60 and urged against the end surfaces 39 of the rolls 21, 22 across the clearance 40.
  • a pair of supply holes 62, 62 is formed in the side'plate 30' one on each side of the nipping point and is surrounded by the U-shaped plug 61.
  • the sealing block or plug 47, 58, 59, 61 preferably is made of a proper material not impairing or contaminating the nip rolls 21, 22, such as plastics containing or not containing a lublicating filler or anti-friction agent, an antifriction alloy or the like.
  • leakage of the presurized fluid from any of the clearances 33, 36, 40 toward the outer end of the stuffing box 24 is minimized or substantially prevented by loosely holding the plug 47, 58, 59, 61 in the recess 46 or groove 56, 57, 60 such that the plug 47, 58, 59, 61 is urged against the confronting surface of the opposed member 21, 22, 27, 28, 29, 30 by means of a mechanical or fluidic force applied to the plug behind the same.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Sealing Devices (AREA)
EP83730116A 1982-11-19 1983-11-17 Appareil pour friser des matières fibreuses textiles Withdrawn EP0109923A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP204007/82 1982-11-19
JP20400782A JPS6012458B2 (ja) 1982-11-19 1982-11-19 圧充凾式捲縮付与機

Publications (2)

Publication Number Publication Date
EP0109923A2 true EP0109923A2 (fr) 1984-05-30
EP0109923A3 EP0109923A3 (fr) 1986-03-12

Family

ID=16483220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83730116A Withdrawn EP0109923A3 (fr) 1982-11-19 1983-11-17 Appareil pour friser des matières fibreuses textiles

Country Status (3)

Country Link
EP (1) EP0109923A3 (fr)
JP (1) JPS6012458B2 (fr)
CA (1) CA1243830A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582129A1 (fr) * 1992-07-30 1994-02-09 Hoechst Celanese Corporation Dispositif pour friser un câble textile et application d'apprêt au câble
WO2006007011A2 (fr) 2004-06-25 2006-01-19 Celanese Acetate Llc Etoupe d'acetocellulose et procede de fabrication correspondant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862279A (en) * 1956-04-10 1958-12-02 Allied Chem Tow crimping apparatus
US3545058A (en) * 1967-10-17 1970-12-08 Techniservice Corp Stuffer crimper with cooling fluid wretreatment means
US3999262A (en) * 1974-05-31 1976-12-28 Indian Head Inc. Apparatus for texturing continuous filament yarn
DE2818178A1 (de) * 1978-03-11 1979-11-08 Kleinewefers Gmbh Dichtungseinrichtung an der einlass- oder auslassoeffnung eines unterdruck- oder ueberdruckbehaelters fuer die behandlung textiler warenbahnen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862279A (en) * 1956-04-10 1958-12-02 Allied Chem Tow crimping apparatus
US3545058A (en) * 1967-10-17 1970-12-08 Techniservice Corp Stuffer crimper with cooling fluid wretreatment means
US3999262A (en) * 1974-05-31 1976-12-28 Indian Head Inc. Apparatus for texturing continuous filament yarn
DE2818178A1 (de) * 1978-03-11 1979-11-08 Kleinewefers Gmbh Dichtungseinrichtung an der einlass- oder auslassoeffnung eines unterdruck- oder ueberdruckbehaelters fuer die behandlung textiler warenbahnen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582129A1 (fr) * 1992-07-30 1994-02-09 Hoechst Celanese Corporation Dispositif pour friser un câble textile et application d'apprêt au câble
WO2006007011A2 (fr) 2004-06-25 2006-01-19 Celanese Acetate Llc Etoupe d'acetocellulose et procede de fabrication correspondant
EP1778903A2 (fr) * 2004-06-25 2007-05-02 Celanese Acetate, LLC Etoupe d'acetocellulose et procede de fabrication correspondant
EP1778903A4 (fr) * 2004-06-25 2009-04-22 Celanese Acetate Llc Etoupe d'acetocellulose et procede de fabrication correspondant

Also Published As

Publication number Publication date
EP0109923A3 (fr) 1986-03-12
JPS6012458B2 (ja) 1985-04-01
JPS5994632A (ja) 1984-05-31
CA1243830A (fr) 1988-11-01

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Inventor name: SHIGEZO, KOJIMA

Inventor name: HARUHISA, TANI

Inventor name: TOKIO, OKADA