US3670484A - Mechanism for withdrawing and winding yarn in spinning units - Google Patents

Mechanism for withdrawing and winding yarn in spinning units Download PDF

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Publication number
US3670484A
US3670484A US14531A US3670484DA US3670484A US 3670484 A US3670484 A US 3670484A US 14531 A US14531 A US 14531A US 3670484D A US3670484D A US 3670484DA US 3670484 A US3670484 A US 3670484A
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US
United States
Prior art keywords
yarn
guide
self
threading
withdrawing
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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
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US14531A
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English (en)
Inventor
Ladislav Brazda
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.)
Elitex Zavody Textilniho
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Individual
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Publication date
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Publication of US3670484A publication Critical patent/US3670484A/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/003—Arrangements for threading or unthreading the guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/005—Means compensating the yarn tension in relation with its moving due to traversing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the mechanism includes in that order a pair of rollers for withdrawing yarn from the outlet of the spinning unit, a self-threading guide, a tension compensator, and a means for winding a bobbin including a yarn traverse and laying mechanism.
  • the configuration and placement of the self-threading guide are such that after breakage or depletion of the yarn, yarn delivery may be resumed with yarn traveling from the outlet of the spinning unit past the self-threading guide to the yarn traverse, without passing between the yarn withdrawing rollers. Continued yarn traverse and take-up by the bobbin automatically threads the yarn through the self-threading guide and introduces it between the yarn withdrawing rollers.
  • IIVVEIVTORS Ladislav BRA ZDA Nilosfm PROC/MZKA ATTORNEY MECHANISM FOR WITI-IDRAWING AND WINDING YARN IN SPINNING UNITS
  • the present invention relates to a mechanism for withdrawing and winding yarn in spinning units of machines for producing yarn, and more particularily relates to a combination of a spinning unit with a self-threading guide for the yarn winding mechanism.
  • bobbins with cross yarn windings are preferred.
  • a further yam guide in the form of a tension compensator, is disposed in advance of the yarn traverse, there being a further guide disposed on the exit side of the yarn withdrawing rolls.
  • the mechanism according to the present invention has among its objects the removal or substantial removal of the above described disadvantages of hereto known devices.
  • Such mechanism simplifies and speeds up the maintenance of the spinning unit, simultaneously eliminating the necessity for manually guiding the yarn between the withdrawing rollers after removing a yam breakage, and of guiding the yarn into the yarn guide disposed immediately on the exit side of the withdrawing rollers.
  • the mechanism in accordance with the present invention makes the guide which is disposed between the withdrawing rollers and the tension compensator self-threading, such guide being so disposed that at the same time as it threads itself it inserts the yarn between the two withdrawing rollers.
  • FIG. 1 is a view in prospective of the illustrative mechanism in accordance with the present invention
  • FIG. 2 is a fragmentary view in end elevation of the mechanism shown in FIGJ, the view being taken from the line 22 of FIG. 1;
  • FIG. 3 is a schematic view in front elevation of the mechanism shown in FIGS.1 and 2.
  • the mechanism of the present invention is illustrated herein in connection with a spinning unit of the pneumo-mechanical type, wherein the spinning of the yarn is carried out under pressure in a spinning chamber. It will be understood, however, that in its broadest aspects the invention is not limited to use with spinning units of such type. Since such pressure spinning chambers are old, only the yarn delivery tube 2 thereof is shown. Yam 1 issuing from tube 2 normally passes in a path N (FIGJ) between a first elongated driven withdrawing roller 3 and a shorter cooperating roller 4 forming a nip therewith.
  • N first elongated driven withdrawing roller 3 and a shorter cooperating roller 4 forming a nip therewith.
  • a self-threading yarn guide 5, to be described in detail hereinafter, is disposed at the exit side of the yarn withdrawing rollers 3, 4; guide 5 has an opening 14 therethrough through which the yarn I passes upwardly to engage a tension compensator 6 which is affixed to an apron l8 (FIGJ) of the machine.
  • the tension compensator 6 is in the form of a shallow, smoothly bent outwardly convex rod which is symmetrical in opposite directions from its center C.
  • the compensator has an effective length extending from the end 6a of the curved part thereof at one end to the similar end 6a at the other end.
  • the tension compensator which is conventional, compensates for the different lengths of yarn required as the yarn is laid upon a bobbin 9 by a yarn laying traverse mechanism.
  • the bobbin is rim driven and supported upon a driven shaft 10, the traverse mechanism having a reciprocable slide 8, driven by conventional mechanism (not shown), slide 8 having a yarn receiving slot 7 therein.
  • the selfthreading yarn guide 5 is in the form of a plate which is fixedly mounted relative to the rollers 3, 4 and the tension compensator 6, the plate being inclined as shown in FIGS. 1 and 2 in an upward direction from the front or forward surface 12 thereof to the rear surface 13.
  • the body plate of the guide 5 is substantially symmetrical about a central axis parallel to the axis of the roll 3.
  • the forward and rear edge surfaces 12 and 13 of the guide 5 are of substantially the same configuration, the two such surfaces forming a composite guide surface which is convex in the direction from right to left in FIG.1, the two surfaces 12 and 13 meeting in an apex 11 which is disposed axially outwardly beyond the left hand end of roll 4 FIGS. 1 and 3).
  • the yarn traverse 8 reciprocates between limits, at the left hand limit the yarn guiding slot lying in the position 7 as shown in FIG. 3, and at the right hand terminus of the reciprocation such slot lying in the position 7'.
  • the yarn 1 does not pass between the rollers 3, 4, and the yarn traversing slot lies in its right hand terminal position 7 the yarn passes along the path 0 above plate 5 (FIG. 3), being prevented from escape from the right hand end of the surface 12 of guide plate 5 by a forwardly projecting short finger 17.
  • the yarn 1 is at the effective right hand end 6a of the tension compensator 6.
  • a line a connecting the outlet tube 2 and the left hand terminal position 7 of the yarn traverse slot is shown in FIGS.
  • Line a is substantially tangential to the left hand effective end 6a of the tension compensator 6.
  • the yarn goes into the traversing slot 7 and is wound in cross wound fashion upon the bobbin 9 which is driven by the bobbin supporting roll 10.
  • the operations conducted upon a breakage in the yarn are substantially the same as those which occur when one bobbin 9 has been filled and is replaced by an empty bobbin, so far as the path of yarn is concerned.
  • the yarn now free of engagement between the rollers 3, 4, is dropped into a path from the tube 2 to the yarn receiving guide slot 7.
  • One such path is indicated at b in FIG.3.
  • the yarn traverse 8 is then going to the right, such member completes its travel in that direction so that the yarn momentarily passes along the path a and above guide plate 5.
  • the yarn Upon the reverse travel of the traverse 8 the yarn progressively travels to the left along the forward guide surface 12 of the guide until the slot 7 of the traverse mechanism reaches its left hand terminal position'The yarn 1 then extends from the tube 2 into engagement with the edge surface 12 of the guide 5 thence into engagement with the low point 6a at the left of the tension compensator 6, and finally to the guide slot 7 of the yarn traverse mechanism.
  • the tension of the yarn pulls it momentarily into a path P in which it engages the apex point 11 of the guide 5; immediately thereafter the tension in the yarn causes it to slip past the apex point 11 to assume a path shown by line a under the guide plate 5 and down the rear guide surface 13 and into contact with the overhang or shoulder 16 on the rear surface of the guide.
  • the yarn is placed in alignment with and to the left of the nip between the rollers 3, 4; consequently, upon the tightening of the yarn as it rides up over the higher central portion of the tension compensator 6 the yarn is not only pulled axially inwardly between the rollers 3, 4 but it is caused to enter the inclined slot 15 in the guide 5 and thus to be stabily positioned within the yarn receiving passage 14 in the guide.
  • a spinning unit for the manufacture of yarn said unit having a yarn outlet, mechanism for withdrawing and winding yarn issuing from said outlet, said mechanism comprising in that order a pair or rollers for withdrawing yarn from said outlet, a self-threading stationary yarn guide having a yarn guiding opening therethrough, a yarn tension compensator, and means for winding a bobbin including a yarn traverse having a reciprocable yarn guide and a yarn laying mechanism, the yarn tension compensator being of shallow convex bow shape extending in a direction parallel to the path of reciprocation of the reciprocable yarn guide, the reciprocable yarn guide, the yarn tension compensator, and the stafiffy yarn guide cooperating automatically to thread a yarn initially passing from the yarn outlet to the reciprocable yarn guide into the self-threading stationary yarn guide, the self-threading stationary yarn guide having a body extending generally in the direction of reciprocation of the reciprocable yarn guide, the body having a convex configuration with an apex at one end thereof, the body having a rear yarn guiding surface

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US14531A 1969-03-07 1970-02-26 Mechanism for withdrawing and winding yarn in spinning units Expired - Lifetime US3670484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS167669 1969-03-07

Publications (1)

Publication Number Publication Date
US3670484A true US3670484A (en) 1972-06-20

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ID=5351717

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Application Number Title Priority Date Filing Date
US14531A Expired - Lifetime US3670484A (en) 1969-03-07 1970-02-26 Mechanism for withdrawing and winding yarn in spinning units

Country Status (6)

Country Link
US (1) US3670484A (de)
CH (1) CH508746A (de)
DE (1) DE2010314A1 (de)
FR (1) FR2049048B1 (de)
GB (1) GB1294387A (de)
SU (1) SU371724A3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041685A (en) * 1973-11-16 1977-08-16 Zinser Textilmaschinen Gmbh Process and apparatus for reattachment of a thread in an open-end spinning machine
US4100722A (en) * 1977-04-18 1978-07-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method of automatically piecing up a yarn in an open-end spinning machine and an open-end spinning machine for carrying out the same
US4112661A (en) * 1977-04-15 1978-09-12 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Open-end spinning machine and a method of stopping the same
CN106006182A (zh) * 2015-03-31 2016-10-12 津A科技股份有限公司 用于使用辅助导纱器调节纱线卷绕宽度的装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022011A (en) * 1974-02-13 1977-05-10 Hironori Hirai Yarn piecing method for open-end spinning machine
JPS60305B2 (ja) * 1976-02-10 1985-01-07 株式会社豊田自動織機製作所 紡糸ユニツトの糸巻取装置
DE3903970A1 (de) * 1989-02-10 1990-08-16 Akzo Gmbh Verfahren zur herstellung von polyesterglattgarn
DE19546081A1 (de) * 1995-12-11 1997-06-12 Schlafhorst & Co W Spulvorrichtung mit Fadenleitorgan

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354627A (en) * 1964-05-19 1967-11-28 Vyzk Ustav Bavlnarsky Yarn control apparatus
US3354626A (en) * 1966-09-26 1967-11-28 Cizek Leopold Method and apparatus for stopping and starting a spinning machine
US3438187A (en) * 1966-01-03 1969-04-15 Roberto Escursell Prat Method of automatically threading yarn from a bobbin into the ring traveller of a continuous ring spinning machine and the like

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT260075B (de) * 1965-09-06 1968-02-12 Vyzk Ustav Bavlnarsky Vorrichtung zum Abzug des Garnes aus der Spinnvorrichtung einer Spinnanlage
CH512392A (de) * 1967-07-13 1971-09-15 Elitex Zavody Textilniho Fadenführer für eine Aufwickelvorrichtung von Textilmaschinen, insbesondere von Maschinen zum Kräuseln von Textilfäden durch Falschdraht

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354627A (en) * 1964-05-19 1967-11-28 Vyzk Ustav Bavlnarsky Yarn control apparatus
US3438187A (en) * 1966-01-03 1969-04-15 Roberto Escursell Prat Method of automatically threading yarn from a bobbin into the ring traveller of a continuous ring spinning machine and the like
US3354626A (en) * 1966-09-26 1967-11-28 Cizek Leopold Method and apparatus for stopping and starting a spinning machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041685A (en) * 1973-11-16 1977-08-16 Zinser Textilmaschinen Gmbh Process and apparatus for reattachment of a thread in an open-end spinning machine
US4112661A (en) * 1977-04-15 1978-09-12 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Open-end spinning machine and a method of stopping the same
US4100722A (en) * 1977-04-18 1978-07-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method of automatically piecing up a yarn in an open-end spinning machine and an open-end spinning machine for carrying out the same
CN106006182A (zh) * 2015-03-31 2016-10-12 津A科技股份有限公司 用于使用辅助导纱器调节纱线卷绕宽度的装置

Also Published As

Publication number Publication date
GB1294387A (en) 1972-10-25
SU371724A3 (de) 1973-02-22
FR2049048B1 (de) 1973-07-13
DE2010314A1 (de) 1970-09-24
CH508746A (de) 1971-06-15
FR2049048A1 (de) 1971-03-26

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