US3603068A - Apparatus for false twisting - Google Patents

Apparatus for false twisting Download PDF

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Publication number
US3603068A
US3603068A US810099A US3603068DA US3603068A US 3603068 A US3603068 A US 3603068A US 810099 A US810099 A US 810099A US 3603068D A US3603068D A US 3603068DA US 3603068 A US3603068 A US 3603068A
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United States
Prior art keywords
belt
spinners
face
plenum
spinner
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Expired - Lifetime
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US810099A
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English (en)
Inventor
Hirohiko Iida
Kazuyoshi Kida
Koen Taira
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Teijin Ltd
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Teijin Ltd
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Publication date
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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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles

Definitions

  • the present invention relates to a process and an apparatus for false twisting a number of continuous filament yarns.
  • the gap between filament yarns has been hitherto set to approximately 30 cm. or above. It has been found that it is possible to carry consistent false twisting into efiect for a number of filament yarns with a gap of about 2 cm. or below of one yarn with the other, if compressed air is blown against the front or back of belts in the belt assembly for driving said spinners.
  • the apparatus has been made compact, one unit of heater and cooler is capable of twist-setting, and furthermore the processed product can be wound directly to the beam.
  • the product is capable of being processed before the winding-up to the beam as desired in various ways such as heat-treatment, sizing, lubrication, waxing, etc. in the advantageously collected sheet form.
  • This invention offers a process for false twisting a number of filament yarns by causing each yarn to pass through a spinner while revolving the spinner by means of a belt assembly, characterized by the steps of maintaining a number of filament yarns in the sheet form, of running the yarn through the spinner in the sheet Form, and of belt driving said spinners while blowing compressed air against the back of the running belts.
  • each yarn is advisable and advantageous to cause each yarn to pass through each spinner while maintaining a number of filament yarns in the sheet form and substantially keeping the gap between each yarn and other yarn at about 2 cm. or below.
  • this invention offers the improvement in an apparatus for false twisting filament yarns comprising a number of spinners arranged at a short distance for false twisting said filament yarns and a belt assembly for rotating said spinners.
  • the improvement developed by us comprises and air jet extending to one face of the belt opposite to the other face where the belt makes contact with the spinners, a plenum being provided in the air jet, an air inlet for feeding compressed air to the plenum, and channels connecting the plenum to the face of the air jet, said air jet holding the belt slidably in such a manner that the air fed from the face of the air jet will exert a quasi-static pneumatic pressure on the back of the belt over the belt zone.
  • spinners are rotated preferably with a pair of belts running in the directions opposite to each other and contracting the spinners at the same time.
  • said air jet and air inlet should be disposed per belt.
  • each spinner being held rotatably, all the spinners may be driven with one belt.
  • FIG. 1 is a flowsheet for explaining a curl process to which the present flase twist process is applicable.
  • FIG. 2 to 5 are to explain one embodiment of the present false twisting, FIG. 2 being a front elevation,
  • FIG. 3 a cross-sectional view of FIG. 2 along the line III- III,
  • FIG. 4 a cross sectional view of FIG. 2 along the line IV- IV,
  • FIG. 5 a cross sectional view of FIG. 4 along the line V-V and FIG. 6 which is another embodiment of the present false twist apparatus and is a view of a cross section cut off with a plane perpendicular to the belt running direction.
  • a number of filament yarns 102 are pulled from bobbins 103 on a creel stand 101 with feed roller 105 and led into heater 106, during which time said filament yarns are arranged in the sheet form having a distance of about 2 cm. or below between each yarn and other after they are passed through reed 104.
  • the heated filament yarns are cooled between blower 107 discharging cool air and air inlet 108 and false twisted with false twist device 109. Twist introduced to said filament yarns is set by heating with heater 106 and by cooling with blower 107.
  • Processed filament yarns 112 are wound up on take up beam 114 after passing through deliver rollers 110, reed Ill, and traverse roller 113.
  • FIG. 2 to 5 show one embodiment of the present invention.
  • Spinners 210 are driven with a pair of belts 205 and 206 running opposite to each other. As seen in FIGS. 3 and 4, each spinner 210 is rotatably held with a pair of holding metallic fittings 306 slidably attached to frame 301. It is advisable to have the distance between the two adjoining spinners at 2 cm.
  • the spinners are rotated around their axes, driven by belts 205 and 206 running to the direction shown by an arrow in FIG. 2.
  • Holdings fittings 306 resist the thrust caused by the advance of filament yarns.
  • the holding fittings as seen in FIG. 5, have a pair of arms 307 and 307 extending to a direction making with the belt running direction and the axial direction of the spinner and hold the spinners rotatably between the arms. These arms act as bearings of the spinners for controlling variations in the position of the spinner to the belt running direction.
  • the thrust of the spinners caused by the running of filament yarns can be made resisted with the belt itself by the registration of the belt and the spinner, for instance, as shown in FIG. 6.
  • FIGS. 2 and 3 The air jet blowing compressed air to the back of the belt in the belt zone which makes contact with the spinners is clearly understood in FIGS. 2 and 3 provided that in FIG. 2 one side alone of the air jet and belt along the queue of spinners is shown. Compressed air is introduced from air inlet means 305 into plenum 309 in air jet device 308, which extends to one face of the belt opposite to other face where the belt makes contact with the spinner. Then the air is passed through channels 302 and fed to the face of the air jet device. As seen in FIG. 3, the air jet device has protuberances 303 at both edges of the face, which protuberances secure belts 205, and 206 slidably therein.
  • the distance between the face of the jet device and the back of the belt is preferably from about 0.05 to about 0.5 mm. Between the side of the belt and said protuberances of the air jet device is so-called air cushion formed and at the back of the belt does a quasi-static pneumatic pressure work.
  • the optimum gap of spinners 210 (the distance between one spinner and its adjoining spinner) is approx. 5 to 20 mm. in ordinary circumstances, depending upon the hardness and thickness of a belt to be used and the size ofa spinner to be employed. It is a disadvantageous to have a gap too broad because the desired compactness of an apparatus is lost and air leakage becomes great on account of the belt forming into the shape of an arch The process as shown in FIG.
  • FIG. 6 shows another embodiment of this invention.
  • the jet device, one of the critical features of this invention in FIG. 6 is the same as in FIGS. 2 to 4.
  • Apparatus for false twisting filament yarns comprising a plurality of spinners adapted to receive and false twist the filament yarns;
  • belt drive means including a belt having a first face for rotating said spinners and a second face;
  • pneumatic means for forcing said belt drive means into engagement with said spinners, said pneumatic means including a plenum extending lengthwise along said second face of said belt, an inlet communicating with said plenum for supplying compressed air to said plenum, and a plurality of channels communicating with said plenum and said second face of said belt whereby air pressure is exerted on said second face of said belt to drive said spinners.
  • said belt means includes a second belt disposed on the opposite side of said spinners from said first belt and moving in a direction opposite to the direction of movement of said first belt, said second belt having a first face for rotating said spinners and a second face
  • said pneumatic means includes a second plenum extending lengthwise along said second face of said second belt, a second inlet communicating with said second plenum for supplying compressed air to said second plenum, and a plurality of second channels communicating with said plenum and said second face of said second belt whereby air pressure is exerted on said second face of said second belt to drive said spinners.
  • said support means includes a pair of holding members for each of said spinners, each of said holding members including a pair of arms extending transversely from said belt and from the longitudinal axes of said spinners to provide bearings for said spinners.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US810099A 1968-03-27 1969-03-25 Apparatus for false twisting Expired - Lifetime US3603068A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1991568 1968-03-27
JP3463768 1968-05-22

Publications (1)

Publication Number Publication Date
US3603068A true US3603068A (en) 1971-09-07

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US810099A Expired - Lifetime US3603068A (en) 1968-03-27 1969-03-25 Apparatus for false twisting

Country Status (4)

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US (1) US3603068A (enrdf_load_stackoverflow)
DE (1) DE1915506A1 (enrdf_load_stackoverflow)
FR (1) FR2004857A1 (enrdf_load_stackoverflow)
GB (1) GB1227055A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184315A (en) * 1978-02-16 1980-01-22 Schubert & Salzer Apparatus for supplying compressed air in arresting the rotor of an open end spinning device
US4779408A (en) * 1987-06-04 1988-10-25 E. I. Du Pont De Nemours And Company Low-tension quenching of ply twist/heatset yarn
US4870813A (en) * 1987-06-04 1989-10-03 E. I. Du Pont De Nemours And Company Ply-twist heat set carpet yarns

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045416A (en) * 1958-09-15 1962-07-24 Ubbelohde Leo False twisting device
US3296789A (en) * 1965-04-08 1967-01-10 Scragg & Sons Textile apparatus
US3458985A (en) * 1967-11-09 1969-08-05 Leesona Corp False twist spindle assembly
US3461660A (en) * 1964-12-07 1969-08-19 Palitex Project Co Gmbh Tangential belt drive for spindles on spinning and twisting frames

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045416A (en) * 1958-09-15 1962-07-24 Ubbelohde Leo False twisting device
US3461660A (en) * 1964-12-07 1969-08-19 Palitex Project Co Gmbh Tangential belt drive for spindles on spinning and twisting frames
US3296789A (en) * 1965-04-08 1967-01-10 Scragg & Sons Textile apparatus
US3458985A (en) * 1967-11-09 1969-08-05 Leesona Corp False twist spindle assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184315A (en) * 1978-02-16 1980-01-22 Schubert & Salzer Apparatus for supplying compressed air in arresting the rotor of an open end spinning device
US4779408A (en) * 1987-06-04 1988-10-25 E. I. Du Pont De Nemours And Company Low-tension quenching of ply twist/heatset yarn
US4870813A (en) * 1987-06-04 1989-10-03 E. I. Du Pont De Nemours And Company Ply-twist heat set carpet yarns

Also Published As

Publication number Publication date
DE1915506A1 (de) 1969-11-13
GB1227055A (enrdf_load_stackoverflow) 1971-03-31
FR2004857A1 (enrdf_load_stackoverflow) 1969-12-05

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