US3822832A - Process and apparatus for compensating the yarn tension difference between two yarns on a spindle drive type winding machine - Google Patents

Process and apparatus for compensating the yarn tension difference between two yarns on a spindle drive type winding machine Download PDF

Info

Publication number
US3822832A
US3822832A US00279454A US27945472A US3822832A US 3822832 A US3822832 A US 3822832A US 00279454 A US00279454 A US 00279454A US 27945472 A US27945472 A US 27945472A US 3822832 A US3822832 A US 3822832A
Authority
US
United States
Prior art keywords
dancer
tension
arm
strands
arms
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
US00279454A
Other languages
English (en)
Inventor
S Torii
H Yamamoto
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3822832A publication Critical patent/US3822832A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
    • 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
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • 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 present invention relates to a spindle-drive type winding machine. More particularly it relates to a winding machine for taking-up two yarns onto two packages arranged on a common spindle at a constant linear speed. And more particularly it relates to a tension compensating process and apparatus applicable in the event a tension difference between the two yarns being wound-up is observed.
  • a spindle-drive type yarn winding machine can take up at a constant linear speed yarn, which is delivered from a spinneret or a lid or an extruder, to make a cross-wind type package.
  • a tension difference between two yarns can be observed. This tension difference is due to various variations in the conditions of the yarns which result from the preparing process previously applied to each yarn.
  • faulty wound packages result. These faults include such defects as formation of nonuniform cross windings, formation of a cob-webbing from the end surface of a package, and poor packages of different hardness.
  • winding apparatuses have been invented with the intention of removing such defects.
  • One type of such winding apparatus for example, has two separate tension controlling units, each consisting of a dancerroll and a tension spring. Because such tension controlling is a mechanical process, it is inherently incapable of non-defective tension controlling. Such defects will result from the many un-equal operating conditions which can be observed between the two controlling apparatuses. That is, the two control apparatuses are operating with no relation to the operation of the spindle or the traverse motion apparatus directly driven by a single electrical torque motor. Consequently unbalanced controlling conditions exist between the two controlling units.
  • Another type of conventional winding apparatus has one tension control unit provided with an electrical speed control apparatus, but the other unit is provided with a mechanical control apparatus similar to the above mentioned type. Perfect tension control cannot be expected in this case either. This is due to the fact that for the yarn associated with the electrical speed control apparatus, the whole range of yarn tension control is available because of the apparatus ability to control the rpm of the torque motor according to the variation of the yarn tension; while for the yarn associated with the mechanical speed control apparatus no such tension controlling range can be expected. This latter is true because the control range of a mechanical tension control apparatus is limited by the controlling of the yarn tension via the spring mechanism for a dancer roll, without relation to the rpm of the torque motor.
  • the principle object of the present invention is to provide a new process and apparatus for a tension con trol system for a spindle-drive type winding machine for winding continuously advancing strands of yarn, wherein the peripheral speed of the winding package is maintained substantially constant in response to the growth of the winding package, and said speed further is matched to the speed of the yarn being wound in response to the tension therein.
  • Another object of the present invention is to provide a winding machine for winding continuously advancing strands of yarn, wherein said yarns are maintained under a constant predetermined tension, and with equivalent tension between two yarns at all times during the period of winding.
  • Another object of the present invention is to provide a winding machine for winding continuously advancing strands of yarn, wherein the tension for each yarn is resumed substantially equivalent and equal to a constant predetermined tension as early as possible in the event a tension difference between two yarns should be observed, by means of a compensating apparatus providing a common single spring and a tensioning member for two separate dancer rolls.
  • step one the dancer rolls are commonly affected by a single tension spring via a single common pressing member for both dancing arms.
  • the dancer arms of said dancer roll are pivoted onto a common supporting axis which is arranged in parallel to the winding unit.
  • a lever for a electrical speed control system provided just under the dancer arm, is operated by said dancer arm.
  • the present invention accordingly comprises an apparatus applicable for any type of winding machine on which two winding packages are turned by a common spindle.
  • This spindle is driven by three phase induction torque motor (hereinafter referred to as an electric torque motor) in variable speed corresponding to the extent of the yarn tension sensed by the related yarn tension sensing apparatus.
  • an electric torque motor three phase induction torque motor
  • a yarn continually advancing at a substantially constant speed, first runsover a guide roller, then passes under a dancer roller and then is directed upwardly. After running over a second guideroller supported on a fixed axis, said yarn can be guided by the action of the sliding rail of the traversing unit.
  • the yarn is wound onto a package in cross-wind guided by the traverse yam guide which oscillates to and fro within said traversing unit.
  • the dancer arm with the said dancer roller on its end can be swung downwardly by the force of a spring via a common lever.
  • This lever is arranged on the upper side of two dancer arms, and acts on said arms to push them downward.
  • Such downward swinging movement of said arms can also take place by the force of gravity on the total weight of a dancer unit comprising a dancer roller and an arm assembly.
  • an operation arm which is always urged upwardly by means of a torsion spring, continuously slightly touches or pushes the dancer arms. If the dancer arms move downward from the normal position, the angular displacement of said operation arm causes the torque motor to increase its running speed via a differential transformer which increases the voltage for any one phase of the torque motor, thus increasing the torque applied to the spindle.
  • Increased yarn tension acts also upon the surface of the package on which the yarn is wound. That is, the rpm of the spindle directly driven by the torque motor is reduced from normal because said tension acts as a braking action onthe spindle. Thus, the winding speed of the yarn onto said package will be substantially reduced. This means that, the magnitude of the yarn tension will be gradually lowered, and the dancer roller moved downward. This continues untilan equilibrium relation of the yarn tension against the spring force plus the self weight of the roller unit can be maintained.
  • the speed reduction of the spindle also effects the winding speed of another yarn of normal tension, in that both dancer arms are displaced downward by an equal angular displacement.
  • This lowering movement of the dancer arm associated with the yarn of normal tension results in the operation arm being swung angularly downward.
  • This movement speeds-up the torque motor, and the winding speed is increased until the package resumes its given normal speed.
  • the arrangement of the dancer arms, common lever and operation arm is also normal. That is, the upper surfaces of the dancer arms touch against the underside of the common lever, and the under surfaces of the dancer arms touch the upper surface of the operation arm. This means that the tensions of both yarns are now almost equivalent, and winding with normal tension can continue.
  • FIG. 1 is a perspective view of the apparatus of the present invention
  • FIG. 2 is the partly sectional plan view of the apparatus of FIG. 1;
  • FIG. 3 is a partly sectional side view of the apparatus of FIG. 1 showing a view with the yarn tension normal;
  • FIG. 4 is the same view as that of FIG. 3, but one yarn tension is increased and the other remains normal;
  • FIG. 5 is the same view as that of FIG. 3, but the spindle speed is reduced due to the brake action of the package induced by the increased yarn tension;
  • FIGS. 6a, 6b and 60 show the diagrammatic equilibrium relation of three forces which correspond to the states of FIGS. 3, 4 and 5 respectively.
  • FIGS. 1 to 5 a basic embodiment of the compensating apparatus for yarn tension difference of the present invention is shown.
  • a torsion spring 9 is mounted on one end of the common axis 1.
  • One leg of said spring is secured to the collar 10, fixedly mounted on said axis 1, by inserting said end of the spring into the hole provided on said collar 10.
  • the other leg of said spring is fixed to the bracket 17 in the same manner.
  • the spring force induced from the deflection of the torsion spring 9 can act upon the dancer arm 8 via an operation arm 7 so as to turn said arm 7 upwardly (i.e., turn it counter-clockwise when seen from the open side of the spindle).
  • the bottom surface of the dancer arm 2a and 2b is in contact with the upper surface of the operation arm 7 by a slight force from the torsion spring 9.
  • the height of the operation arm 7 is substantially the uppermost height which the arm 7 may be swung by said torsion spring 9 against the self-weight of the operation arm assembly.
  • a differential transformer 16 is provied on the end of the axis 1 .
  • the rpm of the electric torque motor 19 can be controlled, and increased or decreased according to the angular displacement of the operation arm 7.
  • a dancer roller unit is pivotally mounted on said common axis 1. It consist of a pair of dancer arms 2a and 2b, a dancer roll 3a or 3b mounted on the top end of each dancer arm, and a mounting element for each arm 2a or 2b respectively. Between said two mounting elements, a lever arm 5 with a lever 4 is pivotally mounted on said common axis 1. The length of said lever 4 extends over both dancer arms 2a and 2b.
  • a tension spring 6 is arranged between a hole provided on the center of said lever 4 and a fixing member on the wall of the bracket 17. The length of the tension spring 6 can be adjusted by means of the adjusting screw 20 and the adjusting nut 21. Thus the required tension force of said spring can be controlled.
  • both yarns A and B have a given normal and substantially equal tension.
  • a pair of dancer arms 2a and 2b are always maintained in their normal or equilibrium position, i.e., almost the horizontal position as shown in FIG. 3.
  • an operation arm 7 is maintained in slight touch-with both dancer arms 2a and 2b.
  • spring forced lever 4 is forced down on said dancer arms 2a and 2b.
  • the yarn tension of the yarns A and B at their normal condition are designated as T and T respectively, and the torque by said tension T and T as T and T respectively.
  • the force acting upon the lever 4 by means of the spring 6 is designated as P and the torque by said spring force as T,
  • the vertical forces induced by the weight of each dancer roll unit or the self weight of each dancing roll unit are designated as W and W respectively, and the torque by said self weight W and W are designated as T and T respectively. Practically, the weight of W is equal to that of W so the relation of T T can be seen.
  • the slow down of the rpm of the spindle 18 reduces the winding speed of the yarn.
  • This condition induces the downward displacement of both dancer rollers 3a and 3b, from said upper most position, passing through their normal horizontal position.
  • the torque values of T and T- are reduced to T and T which are rather smaller than T and T
  • the operation arm 7 will be pushed down by the downward displacement of the dancer arm 2a and 2b against the force of the torsion spring 9.
  • This angular displacement of the operation arm 7 effects the differential transformer 16, via said common axis 1, and the rpm of the electric torque motor 18 will-be increased.
  • This rpm increase is followed by an increasing of the torque value by the increased yarn tension.
  • the rpm and torque values stop increasing.
  • the dancer arms 2a and 2b swing back to their normal horizontal position. and normal winding is resumed.
  • the compensating action of the present invention accomplished by the sequence mentioned above, if at any time the yarn tension becomes too large, the compensation immediately takes place. While because of the provision of the electric troque motor, which directly drives the spindle 18, the equalization of the yarn tension on both yarns is also accomplished within a very short time.
  • the construction of the apparatus of the present invention is very simple and, furthermore, the compensating operation has a large reliability.
  • a process for compensating for differences in tension between two running strands on a spindle drive type strand winding machine wherein the strands are concurrently and at equal speed taken up onto separate packages mounted on a common spindle driven for rotation by an electric torque motor comprising, in a sequenced combination: resiliently amplifying an increase in tension of at least one of the two strands applying the strand tensions increase so amplifled to the corresponding package so that the electric torque motor is braked and the speed of the spindle is lowered; lowering by angularly displacing an operation arm guiding the run of each strand as a result of the spindle rotation deceleration and; acclerating the rotation of said electric torque motor in accordance with the degree of the angular displacement of said operation arm.
  • a spindle-drive type strand winding machine for taking up two yarns at a constant linear speed continuously onto two separate packages on a common driving spindle simultaneously, the compensating apparatus comprising, in combination: a spindle with two packages; an electric torque motor for driving the spindle; two dancer rollers; two dancer arms for supporting the two dancer rollers respectively; a lever arm; a lever mounted on the lever arm and engaging said dancer arms from above; at least one spring urging the lever downward; an operation shaft; an operation arm secured on the operation shaft and engaging said dancer arms from underneath; means for maintaining said operation arm and dancer arms in contact; a differential transformer responsive to the angular displacement of said operation shaft to vary the voltage for the torque motor.
  • a process for compensating for variations in tension, from a given tension for two strands running concurrently and at equal speeds in a spindle drive type winding apparatus wherein the strands are wound into two separate packages rotably mounted on a common spindle comprising the steps of: guiding each of the strands on one of two dancer arms each pivotally mounted independently for angular displacement in one direction in response to an increase in the tension of the associated strand and for angulardisplacement in the other direction in response to a decrease in the tension of the associated strand; biasing both of the dancer arms into an equilibrium position corresponding to said given tension on both strands wherein the biasing force opposes movement of the dancer arms in response to an increase in tension; decreasing the winding speed of both strands in responseto the angular displacement of at least one of said dancer arms in said one direction thereby decreasing the tension in both strands to angularly displace both of said danger arms an equal distance in said other direction until said one dancer arm is substantially in its
  • a device for compensating for variations in the tension of the two strands from a given tension comprising: means for guiding the two strands including two dancer arms; means pivotally mounting each dancer arm independently for angular displacement in one direction in response to an increase in the tension of the associated strand and for angular displacement in the other direction in response to a decrease in the tension of the associated strand; means biasing both of said dancer arms into an equilibrium position corresponding to said given tension on both strands wherein the biasing force opposes movement of the dancer arms in response to an increase in tension; first means responsive to the angular displacement of at least one of said dancer arms in said one dir'ection for decreasing the winding speed of both strands thereby decreasing the tension in both strands to angularly displace both of said dancer arms an equal distance in said other direction until said one
  • first means comprises a first pivotally mounted lever arm and a first member attached to one end thereof and extending over both dancer arms and wherein said means biasing comprises a spring biasing said first member into contact with said dancer arms.
  • said second means comprises a second pivotally mounted lever arm and a second member attached to one end thereof and extending below both dancer arms and means biasing said second member into contact with said dancer arms.
  • both of said first and second means are responsive to the angular displacement of either one and both of said dancer arms.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
US00279454A 1971-11-27 1972-08-10 Process and apparatus for compensating the yarn tension difference between two yarns on a spindle drive type winding machine Expired - Lifetime US3822832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971111580U JPS5136033Y2 (en:Method) 1971-11-27 1971-11-27

Publications (1)

Publication Number Publication Date
US3822832A true US3822832A (en) 1974-07-09

Family

ID=14564963

Family Applications (1)

Application Number Title Priority Date Filing Date
US00279454A Expired - Lifetime US3822832A (en) 1971-11-27 1972-08-10 Process and apparatus for compensating the yarn tension difference between two yarns on a spindle drive type winding machine

Country Status (5)

Country Link
US (1) US3822832A (en:Method)
JP (1) JPS5136033Y2 (en:Method)
DE (1) DE2247474C3 (en:Method)
FR (1) FR2152308A5 (en:Method)
GB (1) GB1367223A (en:Method)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897021A (en) * 1974-06-21 1975-07-29 Owens Corning Fiberglass Corp Method of and apparatus for simultaneously packaging glass strands into individual packages
US4364527A (en) * 1981-05-13 1982-12-21 Progressive Machine Company, Inc. Tension take-up and speed control
US4518126A (en) * 1983-07-06 1985-05-21 Leesona Corporation Take-up mechanism
US6471152B1 (en) * 1999-08-12 2002-10-29 Fuji Photo Film Co., Ltd. Dancer roll mechanism and web feeding apparatus incorporating such dancer roll mechanism
WO2016192870A1 (en) * 2015-05-29 2016-12-08 Nv Bekaert Sa Winding of multiple elongated elements
EP3363756A1 (en) * 2017-02-16 2018-08-22 TMT Machinery, Inc. Yarn winder
US12479688B2 (en) * 2021-01-22 2025-11-25 Beihang University Rigid-flexible coupling mechanism with variable rod length for fibre bundle tension control

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2812100C2 (de) * 1978-03-20 1987-04-16 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Verfahren zum Führen eines aus Einzelsträngen zusammengesetzten Gesamtstranges und Herstellen von gefachten Drahtspulen sowie Vorrichtung zum Durchführen des Verfahrens
JP5673125B2 (ja) * 2010-11-22 2015-02-18 株式会社神津製作所 巻糸装置
JP5738612B2 (ja) * 2011-01-31 2015-06-24 株式会社神津製作所 巻糸装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350022A (en) * 1966-01-17 1967-10-31 Leesona Corp Winding machine
US3672589A (en) * 1969-05-21 1972-06-27 Kamitsu Seisakusho Ltd Detection arrangement of winding speed on a take-up winder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE449170C (de) * 1927-09-03 Herminghaus & Co G M B H Doppelseitige Spinnmaschine fuer Kunstseide
US2778578A (en) * 1954-05-04 1957-01-22 Universal Winding Co Winding machine
CH387512A (de) * 1959-11-07 1965-01-31 Mueller Franz Maschf Kompensations-Fadenwächter zur Steuerung und Überwachung der Fäden an wenigstens zwei Fäden verarbeitenden Maschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350022A (en) * 1966-01-17 1967-10-31 Leesona Corp Winding machine
US3672589A (en) * 1969-05-21 1972-06-27 Kamitsu Seisakusho Ltd Detection arrangement of winding speed on a take-up winder

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897021A (en) * 1974-06-21 1975-07-29 Owens Corning Fiberglass Corp Method of and apparatus for simultaneously packaging glass strands into individual packages
US4364527A (en) * 1981-05-13 1982-12-21 Progressive Machine Company, Inc. Tension take-up and speed control
US4518126A (en) * 1983-07-06 1985-05-21 Leesona Corporation Take-up mechanism
US6471152B1 (en) * 1999-08-12 2002-10-29 Fuji Photo Film Co., Ltd. Dancer roll mechanism and web feeding apparatus incorporating such dancer roll mechanism
WO2016192870A1 (en) * 2015-05-29 2016-12-08 Nv Bekaert Sa Winding of multiple elongated elements
KR20180013915A (ko) * 2015-05-29 2018-02-07 엔브이 베카에르트 에스에이 다수의 세장형 요소의 권취
EA033711B1 (ru) * 2015-05-29 2019-11-19 Bekaert Sa Nv Намотка множества продолговатых элементов
US10526160B2 (en) 2015-05-29 2020-01-07 Nv Bekaert Sa Winding of multiple elongated elements
EP3363756A1 (en) * 2017-02-16 2018-08-22 TMT Machinery, Inc. Yarn winder
CN108439061A (zh) * 2017-02-16 2018-08-24 日本Tmt机械株式会社 纱线卷取机
US12479688B2 (en) * 2021-01-22 2025-11-25 Beihang University Rigid-flexible coupling mechanism with variable rod length for fibre bundle tension control

Also Published As

Publication number Publication date
JPS4864535U (en:Method) 1973-08-16
DE2247474A1 (de) 1973-06-07
FR2152308A5 (en:Method) 1973-04-20
DE2247474C3 (de) 1981-10-22
JPS5136033Y2 (en:Method) 1976-09-04
GB1367223A (en) 1974-09-18
DE2247474B2 (de) 1977-11-10

Similar Documents

Publication Publication Date Title
US4458467A (en) Pretensioner for stretchable film web with dancer roller compensation
US4525905A (en) Apparatus for beaming elastic threads
US4752044A (en) Yarn supply apparatus with electronic yarn tension control, particularly for knitting machines having rapidly varying yarn supply requirements
US3822832A (en) Process and apparatus for compensating the yarn tension difference between two yarns on a spindle drive type winding machine
US6062507A (en) Vertical winder and method
US5056734A (en) Automatic winder
US2752105A (en) Winding machine
US5924645A (en) Winding control device for a take-up winder
JP2519792Y2 (ja) 自動ワインダの巻取ユニット
US4076184A (en) Apparatus for reeling web- or strand-like material
US3860186A (en) Method and apparatus for winding yarn from open end spinning devices
JPH0234866B2 (en:Method)
CN101544321A (zh) 纱线卷绕机及纱线卷绕方法
US3228617A (en) Yarn winding machine
US3429016A (en) Warp tension control means
US3830440A (en) Winding apparatus
US3672589A (en) Detection arrangement of winding speed on a take-up winder
JPH0578502B2 (en:Method)
JP2936948B2 (ja) 自動ワインダのテンション制御装置
JPH03115066A (ja) 糸条巻取方法
JP3269327B2 (ja) 巻取機
US5170952A (en) Control means for apparatus for cross-winding packages
US3796390A (en) Winding, unwinding and tensioning apparatus
JPS6047184B2 (ja) 線条体のトレ−巻取装置における巻付半径検出装置
JPS6137652A (ja) 巻取張力制御装置