US3813870A - Method for automatically doffing cops in a ring spinner - Google Patents

Method for automatically doffing cops in a ring spinner Download PDF

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Publication number
US3813870A
US3813870A US00345833A US34583373A US3813870A US 3813870 A US3813870 A US 3813870A US 00345833 A US00345833 A US 00345833A US 34583373 A US34583373 A US 34583373A US 3813870 A US3813870 A US 3813870A
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United States
Prior art keywords
pliers
cops
cop
spools
spinner
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Expired - Lifetime
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US00345833A
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English (en)
Inventor
G Viglione
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Selex Elsag Datamat SpA
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Nuova San Giorgio SpA
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
    • D01H9/04—Doffing arrangements integral with spinning or twisting machines

Definitions

  • an automatic spinner is known as provided with a device for automatically doffing cops, the device substantially comprising a movable plierscarrying bar located on one side of the spinner at the spindle-carrying frame, which pliers-carrying bar is provided with a plurality of pliers suitable to grip the cops and spools.
  • Said pliers-carrying bar is movable vertically and horizontally supported between a lower position thereof underlying the spindle-carrying frame and an 'upper position thereof overlying said frame through an articulated framework carried by structure horizontally slidable along suitable guide means, said framework and supporting structure being driven to provide for lifting and lowering the pliers-carrying bar and transversing thereof, as above stated.
  • each of the pliers would clamp the corresponding cop at atop position such that the last yarn coils wound on the cop periphery between the pliers and the supply formed at a suitable location on the spindle have an undue extension and such that at doffing, where the yarn should be highly resistant and have a high stretch, said coils can wind up, stretch and finally break, leavinga yarn tail of such a length to interfer at the next spinning resumption step with the thread length supplied by the spinner to be wound up on the new spool.
  • the method for automatically doffing the cops in such a spinner having a plurality of pliers for gripping the cops and yarn winding spools, said pliers being mounted to a pliers-carrying rod or bar laterally of the spinner and movably vertically and horizontally supported between a bottom position thereof at a conveyor belt for feeding the spools and unloading.
  • spinners having up to 2 Q9 spindles and more are available so that a loss of time would result for the need of employing special operator teams for joining the broken threads together, which loss of time can often become unacceptable for a regular economical operation of the spinner.
  • .cops and at least one position at the top of the spindlecarrying frame for said yarn comprise the steps of moving the pliers in said pliers-carrying bar to a top position thereof; to grip the cops at a location corresponding to or adjacent the lower end of the associated spool;
  • the pliers are of a pneumatic character and carried by pairs to separately grip one cop and one spool, respectively, it should be understood that such pneumatic pliers could be as well replaced with pliers of any other type, such-as mechanical pliers, without any change to the novel principle of the present method that canby anyhow practiced. Additionally, in some presently used spinners over the frame the available room is insufficient fordoffing a cop,'gripping it by the pliers at its bottom end. Therefore, an intermediate step is provided where the cop, following the yarn break, is placed again on the spindle, the pliers are carry out the method according to the invention;
  • FIG. 2 is a schematic fragmentary side view of the spinner shown in FIG. 1;
  • FIGS. 3 and 4 are enlarged views showing two subsequent steps in doffing a cop as provided by the method according to the invention.
  • FIGS. land 2 a short description will now begiven of the construction of the doffing device suitable to carry out the method according to the invention, as said device is not an essential part of the invention, but replaceable by any other type of devices.
  • spinner 10 has been diagrammatically shown omitting to show those parts of the spinner not essential for fully understanding the invention
  • said spinner 3 has on two opposing sides spindle-carrying frames 11 cantilever projecting and supporting a plurality of spindles l2 suitably rotatably driven through the belts in a per se well known manner.
  • a device for cop doffmg which, as shown, is subsequently formed of an articulated framework comprising a horizontal bar 13 supporting a plurality of pairs of pliers l4, l5 inwardly facing, of which the external pliers 15 are for gripping the yarn cops 16 on the spinner spindles l2, and the internal pliers 14 are for gripping the spools 17 carried by corresponding pins 18 of a continuous conveyor 19 at a bottom position underlying said frame 11.
  • said continuous conveyor is controlled to carry the individual' spools 17 to a position in alignment with the gripping pliers.
  • the pliers-carrying bar 13 is supported for vertically moving between at least one top position at th'e'spindles 12, as shown on the right-hand side of FIG. 1, and a bottom position underlying the frame 11 at said conveyor, as shown on the left-hand side of FIG. 1, by means of an articulated'framework, in addition to said bar 13 comprising, in the embodiment shown in FIG.
  • This articulated framework supporting structure 24 is driven from horizontal movement on suitable guide means by a rack system 25, diagrammatically shown in PK]. 1, which through a pinion 26 is operated to move by any drive system under the control of a driving shaft for the spinner, or a suitable motor (not shown).
  • the pliers 14 and 15 for gripping the spools l7 and cops 16, respectively are pneumatic pliers comprising inflatable tubular sleeves clamping the spool and cop, respectively, throughout the'dia meter thereof.
  • said pneumatic pliers could be replaced by mechanical pliers or the like, without any change in the principle on which the method according to the present invention is grounded.
  • the spinner 10 is also provided with members for feeding and guiding a yarn 27,-which is to be wound up on the reels 16, such as loops 28 and guide rings 29 that can be overturned in per se known manner.
  • the doffing device supporting the plierscarrying bar 13 is operated and first through an out-' ward horizontal movement then through an upward vertical movement and an inward horizontal movement carries said bar .13 to a top position where said pliers 15 are overlying and aligned with the reels 16. Then, by a subsequent downward vertical movement of said bar 13, the pliers 15 are carried to a position, shown by solid lines on theright-hand side of FIG. 1 and in FIG. 3, where said pliers 15 are at or adjacent the bottom end of the associated reels l6-or spools.
  • the pliers will inflate, where pneumatic pliers are concerned, and generally clamp the reels at said bottom position.
  • the description will proceed for the several doffing steps, reference being had to the pneumatic type of pliers, the operation with pliers of other design being apparent.
  • said articulated framework will cause the pliers-carrying bar 13 to partially lift by a distance sufficient to tearthe thread in the length between the clamping location for the pliers on the reel and said yarn supply 30.- s
  • That the thread tail 31 does not interfer with the yarn 27 upon spinning resumption is also because the ringcarrying carriage will move upwards, prior to winding, by a distance of at least 4-5 cm. from the location where said supply 30 is formed, and this in a well known manner.
  • the upward movement can be continued to completely unthread the reel 16 from the spindle 12, where a suffi-- cient height space is available in the spinner, then laterally moving and subsequently lowering down again to grip the new spools and place the cops 16 on the pins of the conveyor that have been previously cleared. Otherwise, should enough space be not available above the spindles, the pliers-carrying bar 13, carried by said articulated framework, would lower down again to the position shown in FIG.
  • Thepliers l5 inflategripping the spools and the system repeats the opposite movements to bring the spools over the spindles, threading such spools thereon. During these movements, the pliers l5 always hold the associated cops or reels at a gripped condition.
  • the pliers are moved away form the spools and the pliers-carrying bar 13 is again moved back to its bottom position underlying the frame 11 to carry the cops on the conveyor belt 19, which is then operated to feed and unload said cops into a proper container at one end of the spinner.
  • the spinning and winding up operations for the yarn 27 on the spools has already been resumed.
  • a method for automatic cop doffing in a spinner having a plurality of pliers for gripping the reels or cops 6 and the yarn winding up spools, said pliers being carried by a plier-carrying bar, vertically-and horizontally movable supported between one .bottom position thereof adjacent a conveyor belt for feeding the spools and unloading the cops, and at leastone top position relative to thespindle-carrying frame of said spinner,
  • a provision is made for moving said plierscarrying bar to a top position with said pliers arranged at a closest location as possible to thebottom end of said cops; clamping the pliers by gripping the cops at the bottom end thereof firmly pressing the last coils of wound up yarn; lifting the cops by a distance-sufiicient to tear the thread within the length between the gripping location for one pliers on the cop and a thread supply previously wound up on the spindle underlying the spool; and finally doffing the cop from the spindle and replacing it with a spool.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US00345833A 1972-04-19 1973-03-29 Method for automatically doffing cops in a ring spinner Expired - Lifetime US3813870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23372/72A IT959600B (it) 1972-04-19 1972-04-19 Metodo per effettuare la levata automatica delle bobine inun fila toio ad anelli

Publications (1)

Publication Number Publication Date
US3813870A true US3813870A (en) 1974-06-04

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ID=11206500

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Application Number Title Priority Date Filing Date
US00345833A Expired - Lifetime US3813870A (en) 1972-04-19 1973-03-29 Method for automatically doffing cops in a ring spinner

Country Status (10)

Country Link
US (1) US3813870A (fr)
JP (1) JPS5637336B2 (fr)
CH (1) CH557893A (fr)
DD (1) DD103465A5 (fr)
DE (1) DE2316970A1 (fr)
ES (1) ES414370A1 (fr)
FR (1) FR2180788B1 (fr)
GB (1) GB1429003A (fr)
IT (1) IT959600B (fr)
NL (1) NL136954C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036001A (en) * 1975-03-31 1977-07-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for doffing and donning bobbins in spinning machine
US5095690A (en) * 1989-04-14 1992-03-17 Maschinenfabrik Rieter Ag Method and device for exchange of full thread packages

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS592041U (ja) * 1982-06-25 1984-01-07 ナイルス部品株式会社 レバ−スイツチの切換え機構
DE3330352C3 (de) * 1983-08-23 1997-03-13 Schlafhorst & Co W Ringspinnmaschine
JPH04104035U (ja) * 1991-02-15 1992-09-08 株式会社ユーシン デイマースイツチ
DE102005042613B3 (de) * 2005-09-07 2006-12-28 Saurer Gmbh & Co. Kg Ringspinnmaschine mit einer Spulenwechselvorrichtung
DE102005042592B3 (de) * 2005-09-07 2007-01-18 Saurer Gmbh & Co. Kg Ringspinnmaschine mit einer Spulenwechselvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612744A (en) * 1949-08-09 1952-10-07 Christianson Carl-Otto Device for changing bobbins in spinning machines
US2952113A (en) * 1958-04-14 1960-09-13 Deering Milliken Res Corp Method and apparatus for loosening bobbins from spindles
US3350868A (en) * 1963-02-09 1967-11-07 Mechanische Baumwollspinnerei Automatic doffing apparatus
US3550368A (en) * 1967-08-30 1970-12-29 Nuova San Giorgio Spa Automatic spinning machine having a device for the automatic doffing of the bobbins and replacing of the tubes
US3609952A (en) * 1968-07-08 1971-10-05 Edera Spa Officina Meccanica T Automatic mechanical device for doffing and loading spun yarns in spinning frames,doubling frames and the like

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1217296A (fr) * 1957-12-17 1960-05-03 Deering Milliken Res Corp Appareil et procédé pour la levée et la mise en place des bobines sur une machine textile
ES246832A2 (es) * 1959-01-13 1959-05-16 Aplicaciones Textiles S A UN DISPOSITIVO MECáNICO PARA EL CAMBIO SIMULTáNEO DE HUSADAS EN LAS MáQUINAS CONTINUAS DE HILATURAS Y SIMILARES
JPS4525877Y1 (fr) * 1969-09-29 1970-10-08

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612744A (en) * 1949-08-09 1952-10-07 Christianson Carl-Otto Device for changing bobbins in spinning machines
US2952113A (en) * 1958-04-14 1960-09-13 Deering Milliken Res Corp Method and apparatus for loosening bobbins from spindles
US3350868A (en) * 1963-02-09 1967-11-07 Mechanische Baumwollspinnerei Automatic doffing apparatus
US3550368A (en) * 1967-08-30 1970-12-29 Nuova San Giorgio Spa Automatic spinning machine having a device for the automatic doffing of the bobbins and replacing of the tubes
US3609952A (en) * 1968-07-08 1971-10-05 Edera Spa Officina Meccanica T Automatic mechanical device for doffing and loading spun yarns in spinning frames,doubling frames and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036001A (en) * 1975-03-31 1977-07-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for doffing and donning bobbins in spinning machine
US5095690A (en) * 1989-04-14 1992-03-17 Maschinenfabrik Rieter Ag Method and device for exchange of full thread packages

Also Published As

Publication number Publication date
DD103465A5 (fr) 1974-01-20
JPS4919132A (fr) 1974-02-20
JPS5637336B2 (fr) 1981-08-31
FR2180788B1 (fr) 1976-04-23
IT959600B (it) 1973-11-10
FR2180788A1 (fr) 1973-11-30
NL136954C (fr)
GB1429003A (en) 1976-03-24
DE2316970A1 (de) 1973-10-31
ES414370A1 (es) 1976-06-01
CH557893A (it) 1975-01-15

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