EP1857578B1 - Procédé de formation de bobine dans une fileuse - Google Patents

Procédé de formation de bobine dans une fileuse Download PDF

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Publication number
EP1857578B1
EP1857578B1 EP20070107450 EP07107450A EP1857578B1 EP 1857578 B1 EP1857578 B1 EP 1857578B1 EP 20070107450 EP20070107450 EP 20070107450 EP 07107450 A EP07107450 A EP 07107450A EP 1857578 B1 EP1857578 B1 EP 1857578B1
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EP
European Patent Office
Prior art keywords
ring rail
winding
cop
increasing
reversal position
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.)
Active
Application number
EP20070107450
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German (de)
English (en)
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EP1857578A2 (fr
EP1857578A3 (fr
Inventor
Yoshimasa Fujii
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.)
Toyota Industries Corp
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Toyota Industries Corp
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Filing date
Publication date
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP1857578A2 publication Critical patent/EP1857578A2/fr
Publication of EP1857578A3 publication Critical patent/EP1857578A3/fr
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Publication of EP1857578B1 publication Critical patent/EP1857578B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/36—Package-shaping arrangements, e.g. building motions, e.g. control for the traversing stroke of ring rails; Stopping ring rails in a predetermined position

Definitions

  • the present invention relates to a method of forming a cop in a spinning machine such as a ring spinning machine and a ring twisting machine, and more particularly, to a method of forming a cop in increasing winding quantity at the end of winding operation of the spinning machine which performs filling building.
  • winding operation of yarn is performed by means of filling building where the spinning machine gradually lifts a ring rail while repeating the lifting/lowering motion of the ring rail during the operation of the machine; see for example EP 0 953 661 A .
  • the Japanese Patent Application Publication No. 2-277827 proposes a method of increasing winding quantity, wherein winding pitch in increasing winding quantity is unchanged from the winding pitch in performing normal winding operation(where winding quantity is not increased) even if the shape of the cop in increasing winding quantity is the same.
  • the increase in winding quantity is performed in the lower region of the cop or at the beginning of winding operation only.
  • the spinning machine which performs the conventional filling building generally includes a ring-rail lifting/lowering mechanism having a heart cam, it is hard to gradually lower the upper reversal position of the ring rail at the end of winding operation.
  • the present invention is directed to a method of forming a cop in a spinning machine, wherein a winding quantity of cop is increased even if length of a bobbin is not changed and besides winding operation is performed with the same diameter of the cop.
  • a method of forming a cop by upward winding yarn around a bobbin in a spinning machine by means of filling building is characterized by the step of winding the yarn to an upper limit position of a ring rail by normal winding operation where upward displacement of a lower reversal position of the ring rail is constantly the same while a chase length is kept constant, and the step of increasing winding quantity of the yarn by lifting/lowering the ring rail so that the chase length gradually decreases while an upper reversal position of the ring rail is lowered from the upper limit position of the ring rail.
  • a front roller 11 which form a draft part has a rotary shaft 11 a and a gear 12 is fitted on the end of the rotary shaft 11a.
  • the rotary shaft 11 a is rotated through a gear train (not shown) interposed between the gear 12 and a driving shaft 13 driven by a main motor M.
  • a spindle 14 is rotated through a spindle tape (not shown) stretched between the spindle 14 and a tin pulley 15 fixed to the driving shaft 13.
  • the front roller 11 and the spindle 14 are rotated so that delivery quantity (spinning quantity) of fleece from the front roller 11 and yarn winding quantity of the spindle 14 are constantly the same quantity.
  • the ratio of rotational speed of the front roller 11 to the spindle 14 is set so as to correspond to spinning condition (number of twist).
  • a variable speed type motor is used for the main motor M and is driven through an inverter 16.
  • a sensor S1 is disposed near the gear 12 for outputting pulse signal so as to correspond to rotation of the front roller 11.
  • a lifting device is so arranged to lift/lower a ring rail 18 and a lappet angle 19 through a line shaft 17.
  • a snail wire 19a is provided on the lappet angle 19 and yarn Y which is delivered from the front roller 11 is led to a traveler 20 which moves in slide contact with a ring 18a of the ring rail 18 through the snail wire 19a.
  • the line shaft 17 is disposed along the longitudinal direction of the spinning machine and a plurality of screw gears 21 (only one screw gear being shown in FIG. 2 ) are fitted on the line shaft 17 at predetermined intervals so as to be rotatable with the line shaft 17.
  • the ring rail 18 is supported by a plurality of porker pillars 22 (only one porker pillar being shown in FIG. 2 ).
  • Each porker pillar 22 is supported by a frame (not shown) of the machine so as to be vertically movable and the porker pillar 22 has formed in the lower region thereof a screw portion 22a.
  • the screw portion 22a is screwed into a nut member 23 which is rotatably supported at a predetermined position in height of the frame.
  • the nut member 23 has a screw gear (not shown) formed on the outer periphery thereof so as to be engaged with the corresponding screw gear 21.
  • the similar lifting/lowering mechanism is arranged for the lappet angle 19, so that the lappet angle 19 is lifted/lowered in synchronization with the ring rail 18.
  • the line shaft 17 is connected to a drive shaft of a servomotor 24 serving as a motor through a gear train (not shown). Driving the servomotor 24 is controlled by a controller 25 serving as control means through a servo driver 26.
  • the servomotor 24 is provided with a rotary encoder 27.
  • the line shaft 17 is driven by the servomotor 24 so that its rotational speed and rotational direction are freely variable.
  • the line shaft 17, the porker pillars 22, the nut members 23, the servomotor 24 and the gear trains form the lifting device.
  • the above structure of the lifting device is basically the same as that of the device disclosed by the Japanese Patent Application Publication No. 7-300728 .
  • the controller 25 includes a central processing unit (CPU) 29, a program memory (ROM) 30, a working memory (RAM) 31, an input device 32, an input interface 33, an output interface 34, a main motor drive circuit 35 and a servomotor drive circuit 36.
  • the CPU 29 is connected to the inverter 16 through the output interface 34 and the main motor drive circuit 35.
  • the CPU 29 is connected to the servomotor 24 through the output interface 34, the servomotor drive circuit 36 and the servo driver 26.
  • the controller 25 is provided with a counter 37.
  • the counter 37 is electrically connected to the rotary encoder 27 and the CPU 29.
  • An up/down counter is used for the counter 37, wherein count value increases when an output pulse from the rotary encoder 27 is input at the time of normal rotation of the servomotor 24 and the count value decreases when the output pulse from the rotary encoder 27 is input at the time of reverse rotation of the servomotor 24.
  • the CPU 29 operates based on a predetermined program data stored in the program memory 30.
  • the program memory 30 is formed by a read-only memory (ROM) which stores the above program data and various types of data necessary to the execution of the program data.
  • the program data is stored for increasing winding quantity at the beginning and the end of the winding operation.
  • the various types of data include counts of spun yarn, spinning conditions, such as rotational speed of the spindle in spinning operation and the like, and correspondence data, such as number of times of chase of the ring rail 18 for full bobbin.
  • the program memory 30 stores reference pattern of speed change of the main motor M formed from starting of the machine to stop for doffing, and map or relational expression such as reversal position of the ring rail 18 formed from starting of the machine to stop for doffing.
  • the program memory 30 stores relational expression or map for calculating a chase length Lc in increasing winding quantity from a reference chase length in performing normal winding operation(where winding quantity is not increased).
  • the term "chase length" is intended to mean a single lifting/lowering stroke of a ring rail of the present invention.
  • the working memory 31 is formed by a random access memory (RAM) which temporarily stores data input through the input device 32, the result of arithmetic operation executed in the CPU 29 and the like.
  • the input device 32 is used for inputting spinning condition data such as counts of spun yarn, rotational speed of the spindle, a spinning length, a lift length and a reference chase length in spinning operation and the like.
  • the CPU 29 is connected to the sensor S1 and the rotary encoder 27 through the input interface 33.
  • the CPU 29 calculates spinning quantity in accordance with output signal from the sensor S1.
  • the CPU 29 recognizes direction of movement of the ring rail 18, namely, upward or downward movement of the ring rail 18 in accordance with output signal from the rotary encoder 27.
  • the CPU 29 calculates the position of the ring rail 18 in accordance with the count value of the counter 37.
  • counts of spun yarn and spinning condition data such as rotational speed of the spindle, the spinning length, the lift length, the reference chase length and the like in spinning operation are input through the input device 32.
  • the lifting device, the draft part and the spindle drive system are driven in separates states and in synchronous states.
  • the CPU 29 controls the driving of the servomotor 24 in synchronization with the main motor M in accordance with the spinning conditions which are input through the input device 32 and are stored in the working memory 31.
  • the line shaft 17 is rotated through the gear train thereby to rotate the nut member 23 through the screw gear 21.
  • the porker pillar 22 screwed into the nut member 23 is moved upward or downward with the ring rail 18.
  • the ring rail 18 is moved upward at the time of normal rotation of the servomotor 24 and is moved downward at the time of reverse rotation thereof.
  • the yarn Y delivered from the front roller 11 is wound around the bobbin B through the snail wire 19a and the traveler 20 to form a cop 40.
  • the CPU 29 lifts/lowers the ring rail 18 so that upward displacement Dd of an upper reversal position PU transferred from lifting process to lowering process of the ring rail 18 is kept constant as shown in FIG. 1 until the ring rail 18 reaches an upper limit position UL from the beginning of the winding operation.
  • the upper limit position UL of the ring rail 18 is determined by width in holding the bobbin B by a gripper (bobbin holder) of a doffing device (not shown) in a doffing operation.
  • the CPU 29 controls the driving of the servomotor 24 so as to change rotational direction of the servomotor 24 when the ring rail 18 travels distance corresponding to lifting stroke or lowering stroke per chase previously input so that upward displacement Du of a lower reversal position PL of the ring rail 18 is constantly the same while a chase length Lc is kept constant. Therefore, in the case of normal winding operation, the ring rail 18 is lifted/lowered so that the upward displacement Du of the lower reversal position PL transferred from the lowering process to the lifting process of the ring rail 18 is also kept constant.
  • the ring rail 18 is lifted/lowered so that lifting stroke and lowering stroke of the ring rail 18 increase one after another from the beginning of the winding operation until a predetermined number of times of chase. Since the upward displacement Dd of the upper reversal position PU is not changed, the ring rail 18 is lifted/lowered so that the upward displacement Du of the lower reversal position PL changes. In the present embodiment, the ring rail 18 is lifted/lowered so that the contour of the lower portion 40a is a curved surface or that the upward displacement Du of the lower reversal position PL gradually increases.
  • the cop 40 is formed so that the upper portion 40b is continuous with a portion of the cop 40 where normal winding operation is performed at the same diameter.
  • angle ⁇ 1 made by a surface of a part of the upper portion 40b formed in continuity with a lower part of the upper portion 40b (the lower part having major diameter of the upper portion 40b) and a plane perpendicular to the axis of the cop 40 is the same as angle ⁇ made by the surface of the upper portion of the cop (indicated by solid line) in the case of normal winding operation and the plane perpendicular to the axis of the cop 40.
  • the ring rail 18 is lifted/lowered so that downward displacement Dd of the upper reversal position PU of the ring rail 18 in forming the upper portion 40b is kept constant.
  • the downward displacement Dd is set as shown in FIG. 3A so that angle ⁇ 2 made by a surface of an upper part of the upper portion 40b and the axis of the cop 40 ranges from 50° to 55°.
  • top winding is performed for winding the yarn Y around the bobbin B at the position higher than the upper limit position UL so that a top portion 41 is formed on the top of the cop 40.
  • the number of turns of the top winding is the same as or less than three times.
  • the upper reversal position PU of the ring 18a is moved so as to be located in a straight line whose slope is positive (upward) from the beginning of the winding operation until the time Te the conventional winding operation ends (full bobbin stop), and then is moved so as to be located in a straight line whose slope is negative (downward).
  • the lower reversal position PL is moved so as to be located in a curve which projects downward in forming the lower portion 40a, in a straight line in forming the middle portion between the portions 40a and 40b (or in performing normal winding operation), and in a production of the above straight line for the middle portion in forming the upper portion 40b.
  • the cop 40 formed by the above cop forming method includes the lower portion 40a located on the lower side of the cop 40 and the upper portion 40b located on the upper side thereof. Therefore, a winding quantity of cop is increased for the upper portion 40b.
  • increasing quantity of a winding quantity of cop depends on bobbin length, diameter of the cop (ring diameter), thickness of spun yarn and the like, it is estimated to be on the order of 5 to 15%.
  • the present invention is not limited to the above embodiment, but may be embodied in the following examples.
  • the upper portion 40b When the upper portion 40b is formed, it is only necessary to lift/lower the ring rail 18 so that the chase length Lc gradually decreases while the upper reversal position PU of the ring rail 18 is lowered from the upper limit position UL. It is allowed to lift/lower the ring rail 18 so that the downward displacement Dd of the upper reversal position PU of the ring rail 18 is not kept constant but continuously increases. In this case, the surface of the upper part of the upper portion 40b is formed in a curved surface which projects radially outward, so that the winding quantity of the upper portion 40b is increased. It is also allowed to lift/lower the ring rail 18 so that the downward displacement Dd of the upper reversal position PU of the ring rail 18 does not continuously increase but stepwise increases.
  • the upward displacement Du is set the same as that in the case of normal winding operation to increase the winding quantity.
  • the top winding need not be performed.
  • the lifting device which lifts/lowers the ring rail 18 may be formed so as to transmit rotation of the front roller 11 to the line shaft 17 through a gear train as that disclosed by the Japanese Patent Application Publication No. 2-277827 , instead of driving the line shaft 17 by the servomotor 24 for the lifting device. In this case, switchover between normal rotation and reverse rotation of the line shaft 17 is performed through an electromagnetic clutch provided in the gear train.
  • the drive system of the spindle 14 is not limited to the belt driving but may be what is called a single spindle driving system where a motor is provided for each spindle.
  • the spindle 14 may be also driven by a tangential belt rather than by a belt using the chin pulley 15.
  • a method of forming a cop by upward winding yarn around a bobbin in a spinning machine by means of filling building is characterized by the step of winding the yarn to an upper limit position of a ring rail by normal winding operation where upward displacement of a lower reversal position of the ring rail is constantly the same while a chase length is kept constant, and the step of increasing winding quantity of the yarn by lifting/lowering the ring rail so that the chase length gradually decreases while an upper reversal position of the ring rail is lowered from the upper limit position of the ring rail.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (8)

  1. Procédé de formation d'une bobine de filature (40) par un fil d'enroulement ascendant (Y) autour d'un bobinot (B) dans une fileuse au moyen d'une structure de charge, caractérisé par le fait :
    d'enrouler le fil (Y) à une position limite supérieure (UL) d'une plate-bande (18) par une opération d'enroulement normal où d'un déplacement ascendant (Du) d'une position d'inversion inférieure (PL) de la plate-bande (18) est toujours la même alors qu'une longueur de chasse (Lc) reste constante ; et
    d'augmenter la quantité d'enroulement du fil (Y) par élévation/abaissement de la plate-bande (18) de sorte que la longueur de chasse (Lc) diminue progressivement alors qu'une position d'inversion supérieure (PU) de la plate-bande (18) est abaissée de la position limite supérieure (UL) de la plate-bande (18).
  2. Procédé selon la revendication 1, dans lequel le déplacement ascendant (Du) de la position d'inversion inférieure (PL) de la plate-bande (18) lors de l'augmentation de la quantité d'enroulement est réglé pour être égal au déplacement (Du) de la plate-bande (18) dans le cas d'une opération d'enroulement normal.
  3. Procédé selon la revendication 1, dans lequel le déplacement ascendant (Du) de la position d'inversion inférieure (PL) de la plate-bande (18) lors d'une augmentation de la quantité d'enroulement est réglé de sorte à augmenter progressivement.
  4. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel la plate-bande (18) est levée/abaissée de sorte que le déplacement descendant (Dd) de la position d'inversion supérieure (PU) de la plate-bande (18) lors de l'augmentation de la quantité d'enroulement reste constant.
  5. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel la plate-bande (18) est levée/abaissée de sorte que le déplacement descendant (Dd) de la position d'inversion supérieure (PU) de la plate-bande (18) lors de l'augmentation de la quantité d'enroulement augmente continuellement.
  6. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel la plate-bande (18) est levée/abaissée de sorte que le déplacement descendant (Dd) de la position d'inversion supérieure (PU) de la plate-bande (18) lors de l'augmentation de la quantité d'enroulement augmente progressivement.
  7. Procédé selon l'une quelconque des revendications 1 à 6, comprenant en outre le fait :
    d'effectuer un enroulement supérieur pour l'enroulement du fil (Y) autour du bobinot (B) à la position qui est plus élevée que la position limite supérieure (UL) lors de l'opération d'enroulement normal après l'étape d'augmentation de la quantité d'enroulement.
  8. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel la plate-bande (18) est levée/abaissée par un dispositif d'élévation qui comprend un moteur exclusif (24) pour faire tourner un arbre de transmission (17) dans une direction normale ou inversée.
EP20070107450 2006-05-12 2007-05-03 Procédé de formation de bobine dans une fileuse Active EP1857578B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006134271A JP4635958B2 (ja) 2006-05-12 2006-05-12 紡機における管糸形成方法

Publications (3)

Publication Number Publication Date
EP1857578A2 EP1857578A2 (fr) 2007-11-21
EP1857578A3 EP1857578A3 (fr) 2011-04-27
EP1857578B1 true EP1857578B1 (fr) 2012-03-21

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EP20070107450 Active EP1857578B1 (fr) 2006-05-12 2007-05-03 Procédé de formation de bobine dans une fileuse

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EP (1) EP1857578B1 (fr)
JP (1) JP4635958B2 (fr)
CN (1) CN101070129B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008016930A1 (de) 2007-12-21 2009-06-25 Maschinenfabrik Rieter Ag Verfahren zum Aufbau eines Garnkörpers an einer Spinn- oder Zwirnmaschine
JP2011105460A (ja) * 2009-11-18 2011-06-02 Murata Machinery Ltd 糸巻取機
CN105442110B (zh) * 2014-05-26 2018-01-23 西门子工厂自动化工程有限公司 用于控制纱锭底部成型的方法和系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130930A (en) * 1961-05-29 1964-04-28 Whitin Machine Works Builder apparatus
FR1418286A (fr) * 1964-10-02 1965-11-19 Procédé de formation et mode d'emploi des bobines de fils facilitant leur retordement par moulinage
CH518867A (de) * 1970-10-15 1972-02-15 Le Nii Textilnoi Promy Verfahren zur Formierung von Garn- oder Fadenkopsen
DE2051236A1 (en) * 1970-10-19 1972-04-20 Le Ni Instit Yarn package building mechanism - from sections from top of package downwards
JP2683907B2 (ja) * 1987-09-21 1997-12-03 津田駒工業株式会社 撚糸機用パーンの成形方向
JP2712526B2 (ja) * 1989-04-17 1998-02-16 株式会社豊田自動織機製作所 紡機の管糸形成方法
DE3912618A1 (de) * 1989-04-17 1990-10-25 Zinser Textilmaschinen Gmbh Verfahren zum steuern der bewegung einer ringbank, und spinn- oder zwirnmaschine
JP3097381B2 (ja) * 1993-04-02 2000-10-10 株式会社豊田自動織機製作所 紡機における管糸形成方法及び管糸形成装置
JP4013325B2 (ja) * 1998-04-28 2007-11-28 株式会社豊田自動織機 紡機の管糸成形方法
JP4025460B2 (ja) * 1999-04-16 2007-12-19 東レ株式会社 紡機の巻取り運転制御装置
JP2002266176A (ja) * 2001-03-14 2002-09-18 Toyota Industries Corp 紡機における停止方法及び停止制御装置
DE102008016930A1 (de) * 2007-12-21 2009-06-25 Maschinenfabrik Rieter Ag Verfahren zum Aufbau eines Garnkörpers an einer Spinn- oder Zwirnmaschine

Also Published As

Publication number Publication date
EP1857578A2 (fr) 2007-11-21
JP4635958B2 (ja) 2011-02-23
EP1857578A3 (fr) 2011-04-27
CN101070129A (zh) 2007-11-14
JP2007303038A (ja) 2007-11-22
CN101070129B (zh) 2012-06-20

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