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US3491526A - Yarn severing arrangement for textile spindles - Google Patents

Yarn severing arrangement for textile spindles Download PDF

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Publication number
US3491526A
US3491526A US780004A US3491526DA US3491526A US 3491526 A US3491526 A US 3491526A US 780004 A US780004 A US 780004A US 3491526D A US3491526D A US 3491526DA US 3491526 A US3491526 A US 3491526A
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US
United States
Prior art keywords
yarn
tube
spindle
holder
flange
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.)
Expired - Lifetime
Application number
US780004A
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English (en)
Inventor
Paul Krauss
Ernst Roethke
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.)
ZINNER TEXTILMASCHINEN GmbH
Original Assignee
ZINNER TEXTILMASCHINEN GmbH
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Filing date
Publication date
Application filed by ZINNER TEXTILMASCHINEN GmbH filed Critical ZINNER TEXTILMASCHINEN GmbH
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Publication of US3491526A publication Critical patent/US3491526A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01H9/16—Yarn-severing arrangements, e.g. for cutting transfer tails; Separating of roving in flyer

Definitions

  • the present invention relates to a textile spindle which is constructed to obtain the severing of a yarn end extending between the underwinding portion of the spindle and a package of the same during the dofiing of the tube carrying the package.
  • tube is used in the present application to cover any kind of carrier or holder for a wound yarn, including tapered conical tubes, spools and the like, which can be attached to rotary textile spindles for winding up yarn until a yarn package is formed.
  • the present invention is particularly concerned with textile machines, such as ring spinning machines and thread twisting machines provided with automatic donning and doffing apparatus by which tubes with complete yarn packages are automatically exchanged for empty tubes on the spindles.
  • yarn is used in the present application to cover yarns and twisted threads, as well as synthetic fibers consisting of one or several endless filaments.
  • the yarn end of a fully wound Yarn package is wound on an underwinding portion of the spindle.
  • the yarn portion between the package and the underwinding portion of the spindle must be torn or severed. If the yarn does not break and is unwound from the package during the doffing of the tube and package, the exchange of tubes may be substantially disturbed. For example, while the full tubes are transported to a storing place, they may be held back and tilted by the yarn end still fixed to the underwinding portion, and damaged by colliding with machine parts.
  • the yarn end breaks only very late, for example when the full tube has been placed on a conveyor by which the full tubes are transported to a storing place, the yarn end is elastically tensioned and recoils when the yarn end breaks so that the yarn portion connected to the unwinding portion of the spindle entangles the spindle so that the following winding operation cannot be properly carried out, and the machine must be stopped for clearing the respective spindle.
  • Another object of the invention is to obtain the severing of the yarn end during the early part of the dofiing of the tube with the yarn package.
  • Another object of the invention is to prevent unwinding of yarn from the package during the dofiing of the tube carrying the package.
  • Another object of the invention is to prevent circumferential movement of the yarn end portion about the spindle so that unwinding of yarn from the yarn package is not possible during the dotting of the tube.
  • the present invention provides a method by which a yarn portion fixed to an underwinding portion of a textile spindle and extending from the same to a yarn package wound on a tube carried by the spindle is severed.
  • the yarn portion is held against circumferential movement about the spindle and the tube, while the tube and package on the same are simultaneously dotted away from the underwinding portion of the spindle so that the yarn is not unwound from the yarn package and the yarn portion is longitudinally stressed and severed. Since the yarn portion cannot be lengthened by additional yarn unwound from the package, it is severed during the first part of the dofling movement of the tube in longitudinal direction of the spindle.
  • the yarn portion is stressed and severed during the first part of the dofiing movement of the tube when the axial displacement of the tube on the spindle is comparatively small. This result can be obtained by preventing circumferential movement of the yarn portion along a short predetermined distance in axial direction of the spindle, which corresponds to the first part of the doffing movement of the tube with the package.
  • One embodiment of an apparatus comprises a textile spindle having an underwinding portion, a carrier portion for supporting a tube with a yam package having a yarn end wound on the underwinding portion, and a guide portion between the carrier portion and the underwinding portion; and a yarn holder mounted on the guide portion of the spindle for movement in axial direction of the s indle between a normal position adjacent the underwinding portion and an operative position adjacent the carrier portion of the spindle.
  • the holder has a coupling portion, preferably a cylindrical bushing. frictionally engaged in the normal position of the holder by the tube, and a holding portion, preferably a flange, formed with circumferentially spaced recesses for receiving a portion of said yarn end between the yarn package and the underwinding portion.
  • the holder During doffing of the tube and package from the carrier portion of the spindle, the holder is moved by the tube to the operative position while holding the yarn end substantially in the same circumferential position until the yarn end breaks. During further movement of the tube in the dofiing direction, the tube releases the coupling portion of the holder so that the same returns to its normal position, preferably by the action of the force of gravity.
  • the coupling portion of the holder is omitted, andithe holding portion is fixedto the lower end ofithe tube carrying the package
  • this construction has the disadvantage that the teeth which form the recesses of the holding portion, may damage the packages on other full tubes transported to a storing place.
  • the holder is connected with the tube while the tube is seated on the carrier portionof the spindle, While during the doffing of the tube, the holder moves in axial direction with the tube until stopped by an abutment on the spindle, whereupon the tube separates from the coupling portion 9f the holder during further dofling movement.
  • the coupling portion of the holder is a bushing mounted on a cylindrical guide portion of the spindle, and fitting into the inner surface of the lower end of the tube.
  • the frictional connection between the tube and the coupling bushing is improved if the bushing is resilient, or is provided with one or;several resilient spring rings which resiliently press against the inner annular surface of the tube end portion.
  • the bushing has a shape matching ,the shape of the inner surface of the tube so that the tube engages the bushing with a tight fit.
  • FIG. 1 is a fragmentary elevation illustrating a textile spindle provided with a yarn holder according to the invention, shown in a normal position;
  • FIG. 2 is a fragmentary elevation illustrating the spindle of FIG. 1 with the holder in a ditferent position
  • FIG. 3 is a fragmentary elevation illustrating the spindle of FIG; 1 with the holder in an end position;
  • FIG. 4 is a fragmentary elevation illustrating a modified embodiment of a holder provided with a resilient coupling portion
  • FIG. 5 is a fragmentary elevation, partially in section, illustrating a modified holder according to the invention
  • FIG. 6 is a cross-sectional view taken on line 66;
  • FIG, 7 is a fragmentary plan view illustrating a first construction of the holding portion of the holder on an enlarged scale
  • FIG. 8 is a plan view illustrating on an enlarged scale the holder used in the embodiment of FIG. 1;
  • FIG. 9 is a fragmentary elevation, partially in section, illustrating a further embodiment of a holder according to the invention.
  • FIG. 10 is a fragmentary plan view illustrating on an enlarged scale, a modified construction of the holding portion of the holder.
  • a rotary textile spindle 3 has a journal portion 4 projecting into a bearing, not shown, a pulley portion 7, a knurled under-winding portion 1, a knurled spindle flange 2, a carrier portion 9, and a cylindrical
  • a yarn package 17 is wound on a tube 6 which i is seated on carrier portion 9 and rotates with thessame so that the yarn is wound up to form a package on tube 6.
  • several loops of the yarn end 19 are Wound on the underwinding portion 1 to anchor the yarn end, and a yarn portion 19 extends between the underwinding portion 1 and yarn package 17.
  • the holding flange .11 of holder 10 is provided with peripheral teeth and recesses 16, as best. seen in FIG. 8.
  • the cylindrical bushing 13 has an outer diameter matching the inner diameter of the lower end portion of tube 6 so that, when tube 6 is donned onto the spindle, the circular inner surface of the lower tube end portion frictionally engages the outer surface of bushing 13 while the lower annular edge of tube 6 abuts an upper annular abutment face of flange 11.
  • the engagement between the lower endportion of tube 6 and the outer surface of bushing 13 is a tight fit so that holder 10 is frictionally coupled with tube 6.
  • the holder shown in FIG. 7 has peripheral teeth 61 and corresponding recesses 60, each of which includes an inner guiding portion for the yarn portion 19, and a slot between the wider outer ends of teeth 61 through which the yarn portion 19 enters the guide parts of recesses 60.
  • the modified holder 25 shown in FIG 4 has a coupling bushing 38 with a toric coupling surface, and is made resilient and elastic by slots forming resilient strips 37.
  • Holding flange 36 may be constructed as shown in FIG. 8.
  • FIGS. 5 and 6 illustrate another embodiment of the invention in which holder 26 is drawn of sheet metal.
  • a cylindrical guide portion 35 of the spindle extends between the annular abutment shoulder of carrier portion 9', and the spindle flange 2' provided adjacent the underwinding portion 1.
  • Holder 26 has a cylindrical coupling bushing portion 33 having an inner flange 32 at the upper end, and an outer flange 27 at its lower end which in the normal position of holder 26 abuts spindle flange 2'.
  • the outer flange 27 has circumferentially spaced small recesses and projections 28 for holding a yarn portion 19 against circumferential movement.
  • FIG. 9 illustrates another embodiment of the invention in which a holder is mounted on a cylindrical guide portion 9" of the spindle, which has a knurled spindle flange 2 and an underwinding portion 1".
  • Holder 10' has an inner coupling bushing portion 40 and an outer holding portion 50 which form a circular slot with coupling bushing 40, and has a flange 55 provided with circumferential recesses and projections, and surrounding a portion of the outer periphery of spindle flange 2".
  • the upper end of coupling bushing 40 tapers so that the tube 41 is guided into the circular slot 51.
  • Coupling bushing 40 has a circumferential groove 53 in which a spring ring 54 is mounted which frictionally and resiliently engages the inner surface of the lower tube end portion 42 so that holder 10' is frictionally coupled with tube 41 and moves with the same during the dofling of tube 41 with the yarn package, while the yarn portion, not shown in FIG. 9, between the package and the underwinding portion 1 is located in one of the peripheral recesses of flange 55 and prevented from circumferential unwinding movement.
  • FIG. 9 has the advantage that there can be no open annular gap between the lower end of the tube and the holding flange, which may occure between the tube end portion 5 and the holding flange 11 in the construction of FIG. 1. Furthermore, in the construction of FIG. 9, any annular gap which may form between spindle portion 2' and holder 10, is covered by a portion of flange 55. It has been found advantageous to provide peripheral recesses and projections only in the lowermost flange 55 of the holding portion 50.
  • the teeth and recesses 16 of flange 11 project only slightly in radial direction beyond the outer diameter of the lower tube end portion 5, which has certain advantages.
  • the spindle flange 2 serves the purpose to prevent unwinding of the yarn loops on underwinding portion 1. If such unwinding is not to be expected, spindle flange 2 may be omitted.
  • the outer diameter of spindle flange 2 is greater than the outer diameter of the underwinding portion 1, but at the same time, the outer diameter of spindle flange Z is smaller than the outer diameter of the holding flange 11.
  • the outer diameter of the spindle flange 2 is substantially the same as the outer diameter of the coupling bushing 13, and the inner diameter of the tube end portion 5 which is particularly advantageous for this embodiment.
  • substantially the same relative dimensions are used, while in the embodiment of FIG. 9, the outer diameter of the holding flange 55 is substantially greater than the outer diameter of the tube end portion 42, which is advantageous in the arrangement of FIG. 9.
  • the peripheral teeth of the holding flanges which favors the severing of the yarn.
  • the teeth and recesses may be constructed to obtain reliable clamping of the yarn.
  • the peripheral teeth of the holder have such a shape as to form wedge shaped recesses 64 in which the yarn is clamped.
  • the yarn is guided for longitudinal movement in the wide guide portions of recesses 60.
  • the shape of the recesses and teeth of the holder is selected in accordance with the properties of the yarn which is wound on the respective spindle.
  • Yarn end severing arrangement for textile spindles comprising, in combination, a rotary spindle having an underwinding portion, and a carrier portion for supporting a tube with a yarn package having a yarn end wound on said underwinding portion; and a yarn holder movable in axial direction of said spindle and being non-rotatably connected with said tube for axial movement therewith, said yarn holder having a holding portion formed with circumferentially spaced recesses for receiving a yarn portion of said yarn end between said package and said underwinding portion so that during axial dofling of said tube and package from said carrier portion, said holder is moved by said tube away from said underwinding portion while holding said yarn portion in the same circumferential position until said yarn portion breaks.
  • Yarn end severing arrangement for textile spindles comprising, in combination, a rotary spindle having an underwinding portion, a carrier portion for supporting a tube with a yarn package having a yarn end wound on said underwinding portion, and a guide portion bet-ween said carrier portion and said underwinding portion; and a yarn holder mounted on said guide portion for movement in axial direction of said spindle between a normal position adjacent said underwinding portion and an operative position adjacent said carrier portion, said holder having a coupling portion frictionally engaged in said normal position by said tube, and a holding portion formed with circumferentially spaced recesses for receiving a yarn portion of said yarn end between said package and said underwinding portion so that during dofling of said tube and package from said carrier portion, said holder is moved by said tube to said operative position while holding the yarn portion in the same circumferential position until the yarn end breaks whereupon said tube releases said coupling portion of said holder.
  • said holding portion of said holder is located adjacent said flange portion, said flange portion having a diameter greater than the diameter of said underwinding portion and smaller than the diameter of said holding portion.
  • coupling portion is a cylindrical bushing and said guide portion is cylindrical; wherein said tube has a circular end portion fn'ctionally engaging said bushing; wherein said holding portion is a circular flange projecting from said bushing and having recesses uniformly spaced along the periphery thereof; and wherein said tube has a circular edge abutting said flange in said normal position While said end portion of said tube surrounds and frictionally engages said bushing.
  • each recess include an inner wide yarn guiding recess portion and an outer narrow recess portion for engaging the yarn end and for holding the same in said inner yarn guiding recess portion.
  • said holding portion is a circular flange radially projecting from said coupling portion and having an annular shoulder adjacent the latter forming said abutment; and wherein the outer diameter of said flange is slightly greater than the outer diameter of said end portion of said tube.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
US780004A 1967-12-01 1968-11-29 Yarn severing arrangement for textile spindles Expired - Lifetime US3491526A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1710057 1967-12-01
DE1710057A DE1710057C3 (de) 1967-12-01 1967-12-01 Verfahren und Abreißvorrichtung zum Abreißen von Garnen oder Zwirnen

Publications (1)

Publication Number Publication Date
US3491526A true US3491526A (en) 1970-01-27

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Application Number Title Priority Date Filing Date
US780004A Expired - Lifetime US3491526A (en) 1967-12-01 1968-11-29 Yarn severing arrangement for textile spindles

Country Status (5)

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US (1) US3491526A (de)
CH (1) CH485044A (de)
DE (1) DE1710057C3 (de)
FR (1) FR1595707A (de)
GB (1) GB1209810A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813864A (en) * 1972-11-29 1974-06-04 Du Pont Method for stringing up a rotating package holder
US3962856A (en) * 1974-10-16 1976-06-15 Maschinenfabrik Heinz Weller Doffing apparatus
US4196575A (en) * 1977-10-04 1980-04-08 Rieter Machine Works, Ltd. Method for transfer of a fiber roving from a completed bobbin package to an empty tube on a spinning preparatory machine
EP0112303A1 (de) * 1982-12-17 1984-06-27 OFFICINE GAUDINO di P. GAUDINO & C. S.a.s. Vorrichtung zur automatischen und gleichzeitigen Abnehmen von vollen Spulen an einer Spinn- oder Zwirnmachine
US4870815A (en) * 1987-04-03 1989-10-03 Cerit Spa Method to wind down a yarn package and device to perform the method
US5339614A (en) * 1991-07-11 1994-08-23 Maschinenfabrik Rieter Ag Rotating disc for separating and processing the end of yarn
US5581989A (en) * 1993-10-29 1996-12-10 Zinser Textilmaschinen Gmbh Spindle for spinning machine with knurled reserve surface
CN100415968C (zh) * 2004-05-27 2008-09-03 株式会社丰田自动织机 用于在纺纱机中去除多余纱线的方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3622561A1 (de) * 1985-07-08 1987-01-15 Toyoda Automatic Loom Works Haltevorrichtung zur leicht loesbaren fixierung eines garnendes an einer spindel
DD244580A1 (de) * 1985-12-20 1987-04-08 Textima Veb K Vorrichtung zum trennen eines fadens fuer eine spindel an spinn- oder zwirnmaschinen
DE4117704C2 (de) * 1991-05-30 1995-05-18 Zinser Textilmaschinen Gmbh Abreißvorrichtung zum Abreißen von Garnen oder Zwirnen an einer Spinn- oder Zwirnmaschine
JP4284863B2 (ja) * 2000-12-07 2009-06-24 株式会社豊田自動織機 紡機における尻糸切断方法及び尻糸切断装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US964084A (en) * 1909-06-07 1910-07-12 John Arnold Combined bobbin-holder and yarn-catcher.
GB723383A (en) * 1951-08-18 1955-02-09 Eaton Mfg Co Improvements in or relating to a magnetic clutch
US3210922A (en) * 1963-02-12 1965-10-12 Mechanische Baumwollspinnerei Thread cutting apparatus for spinning frames or the like
GB1007616A (en) * 1962-10-30 1965-10-13 Eizaburo Negishi Spindle apparatus for unwinding a yarn bunch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US964084A (en) * 1909-06-07 1910-07-12 John Arnold Combined bobbin-holder and yarn-catcher.
GB723383A (en) * 1951-08-18 1955-02-09 Eaton Mfg Co Improvements in or relating to a magnetic clutch
GB1007616A (en) * 1962-10-30 1965-10-13 Eizaburo Negishi Spindle apparatus for unwinding a yarn bunch
US3210922A (en) * 1963-02-12 1965-10-12 Mechanische Baumwollspinnerei Thread cutting apparatus for spinning frames or the like

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813864A (en) * 1972-11-29 1974-06-04 Du Pont Method for stringing up a rotating package holder
US3962856A (en) * 1974-10-16 1976-06-15 Maschinenfabrik Heinz Weller Doffing apparatus
US4196575A (en) * 1977-10-04 1980-04-08 Rieter Machine Works, Ltd. Method for transfer of a fiber roving from a completed bobbin package to an empty tube on a spinning preparatory machine
EP0112303A1 (de) * 1982-12-17 1984-06-27 OFFICINE GAUDINO di P. GAUDINO & C. S.a.s. Vorrichtung zur automatischen und gleichzeitigen Abnehmen von vollen Spulen an einer Spinn- oder Zwirnmachine
US4598540A (en) * 1982-12-17 1986-07-08 Officine Gaudino Di P. Gaudino & C. S. A.S. Ring spinning or twisting machine having a device for the automatic and simultaneous removal of all full cops
US4870815A (en) * 1987-04-03 1989-10-03 Cerit Spa Method to wind down a yarn package and device to perform the method
US5339614A (en) * 1991-07-11 1994-08-23 Maschinenfabrik Rieter Ag Rotating disc for separating and processing the end of yarn
US5581989A (en) * 1993-10-29 1996-12-10 Zinser Textilmaschinen Gmbh Spindle for spinning machine with knurled reserve surface
CN100415968C (zh) * 2004-05-27 2008-09-03 株式会社丰田自动织机 用于在纺纱机中去除多余纱线的方法

Also Published As

Publication number Publication date
CH485044A (de) 1970-01-31
DE1710057C3 (de) 1978-09-21
DE1710057A1 (de) 1971-09-23
GB1209810A (en) 1970-10-21
DE1710057B2 (de) 1978-01-12
FR1595707A (de) 1970-06-15

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