EP2083102A2 - Dispositif et processus pour le dégarnissage des bobines des métiers à filer à anneaux - Google Patents

Dispositif et processus pour le dégarnissage des bobines des métiers à filer à anneaux Download PDF

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Publication number
EP2083102A2
EP2083102A2 EP20080171085 EP08171085A EP2083102A2 EP 2083102 A2 EP2083102 A2 EP 2083102A2 EP 20080171085 EP20080171085 EP 20080171085 EP 08171085 A EP08171085 A EP 08171085A EP 2083102 A2 EP2083102 A2 EP 2083102A2
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EP
European Patent Office
Prior art keywords
bobbins
doffing
spinning
arms
bobbin
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.)
Withdrawn
Application number
EP20080171085
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German (de)
English (en)
Inventor
Roberto Badiali
Danny Lant
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio Macchine Tessili SpA
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 Savio Macchine Tessili SpA filed Critical Savio Macchine Tessili SpA
Publication of EP2083102A2 publication Critical patent/EP2083102A2/fr
Withdrawn legal-status Critical Current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
    • D01H9/04—Doffing arrangements integral with spinning or twisting machines

Definitions

  • the present invention refers to a device and process for doffing in the ring spinning frames.
  • the yarn production technique is widely prevalent that includes a first stage of ring spinning which produces bobbin yarn, followed by a second winding stage in which the yarn is unwound from its bobbin, cleaned of its defects and rewound in a package, which contains a much greater yarn quantity and which corresponds to a considerable number of processed bobbins.
  • the winding processing is much faster than the spinning, and thus a small quantity of winding stations or units, on the order of several dozen, is capable of completing the production of a great number of ring spinning units, on the order of several thousand.
  • the ring spinning frame is composed of hundreds of spinning units, arranged on each of the two machine faces, with a driving, governing and control unit of the machine placed at one of its ends and with a transport system which serves the two faces of the machine.
  • the trend towards machines with increasing productivity involves the increase of the number of units and increasingly longer machines.
  • the transfer of the bobbins replete with yarn to be sent to the winder, and the transfer of the empty tubes (on which new bobbins are wound) to the spinning units generally occurs by individually moving bobbins and tubes in erect position, for example on pins inserted on longitudinal metal strips which slide on the faces of the spinning frame or on peg support pins borne by conveyor belts or strips.
  • a spinning frame is coupled to a winder having hourly winding capacity that considerably exceeds the spinning capacity of the spinning frame, so to complete, with a certain margin, the entire spinning production.
  • the spinning process on the ring spinning frame is governed by a governing and control unit which detects the achievement of the produced meters of yarn in bobbins on every unit of the spinning frame, stops the spinning according to a procedure which leaves the yarns in predetermined position and proceeds with the doffing.
  • the doffing consists of drawing the finished bobbins from the respective spinning units and unloading them on the transport system of the spinning frame, and of the subsequent drawing of the empty tubes from the transport system and positioning them on the ring spinning units, operating in parallel over all the spinning units which compose the ring spinning frame.
  • the ring spinning frame is provided with a doffing device which is capable of lifting itself and simultaneously grasping all the completed bobbins over all the spinning units which compose the spinning frame, with a series of individual clamps which are brought to take the bobbins, to lift themselves, taking the bobbins from the bobbin carrier spindles on which the bobbins are fit, and then lowering themselves in order to deposit the bobbins on the individual supports which form the transport system.
  • the same device then provides for taking the empty tubes and fitting them on the bobbin carrier spindles freed of the bobbins in the previous operation.
  • the doffing device uses a clamp carrier bar borne by an extendible pantograph, capable of positioning, taking and lifting bobbins and tubes from the bobbin carrier spindles, from the parking stations and from the pins of the underlying transport system.
  • pantograph is made height-extendible between the two above-mentioned levels, and is also rotatable 15-25° in accordance with an axis parallel to the face of the machine, in order to avoid the bulk of the spindle carrier rail and the other members of the spinning units arranged along the face.
  • Parking stations are provided of the waiting empty tubes; such station can be brought to an intermediate level and aligned with the spinning spindle or up to the level of the moving belts, though offset by a half pitch with respect to the spinning spindle of the unloaded bobbin: in both cases, the movement is complicated by the precision needs of the relative position of the clamps with respect to the bobbins and the tubes to be moved.
  • the present invention is aimed for the doffing of the finished bobbin and its substitution with an empty tube which simplifies such yarn processing step and makes it more efficient.
  • the invention is described here with reference to a typical embodiment thereof in a ring spinning station.
  • the present invention in its most general meaning as device for bobbin doffing and substitution, is defined in the first claim. Its variants or preferred embodiments are defined in the dependent claims 2 - 8.
  • the present invention in its meaning as a process for bobbin doffing and substitution, is defined in claim 9. Its preferred variants or embodiments are defined in the dependent claims 10 - 12.
  • Figure 1 schematically shows, in section, a ring spinning group of conventional type
  • figure 2 schematically shows, in section, two spinning units on the two faces of the spinning frame with their members involved in the doffing operation
  • Figures 3A and 3B show the doffing device in front view, respectively in its maximum and minimum elevation positions
  • figure 4 shows, in front view, the positions between which the bobbins and tubes are moved
  • figure 5 shows the detail of the extension driving of the clamps engaging bobbins and tubes.
  • every spinning frame is composed of a plurality of spinning stations aligned along its two faces. Every spinning frame face is composed of hundreds of such stations, which commonly derive their driving from motors which actuate longitudinal axes, and their functions from dispenser units which distribute them along the machine.
  • the spinning frame is generally structured with a sequence of modules of transportable size, composed of a plurality of spinning stations; such modules are then brought to and assembled on site, so to offer the complete spinning frame.
  • the modules shown in the figures are typically formed of twenty-four spinning units for each face.
  • the sliver 1 fed to the spinning units comes from a series of packages 2 hung above the spinning units, and is brought forward to the drafting unit 3.
  • the drafting group is depicted in figures 1 and 2 , for example, with three pairs of drafting rollers or cylinders, of which the lower cylinder is made with a grooved segment of a longitudinal bar, shared with the adjacent spinning stations and rotating in accordance with the arrow a).
  • the upper cylinder is idle, made with elastomeric material and is driven into movement in accordance with the arrow b) by the lower cylinder, on which it is pressed by a support.
  • the final pair of drafting rollers imparts the final drafting on the sliver, such rollers being driven at a greater linear speed than that of the preceding roller pairs.
  • the sliver has already assumed the size of the yarn 10 and already receives the twisting from the underlying ring spinning unit.
  • the yarn 10 first passes into the thread guides 11, typically of pig's tail form, and from here to a rotating slider which rotates on a fixed ring 12, with diameter slightly greater than the bobbin to be produced and borne by a ring-rail 14 shared with the adjacent spinning units.
  • the ring-rail 14 is continuously moved in accordance with the arrow c) in two directions, to continuously lift and lower all the fixed rings 12 of the single spinning units around their bobbins being formed and to distribute the yarn 10 on the tube 16 of every bobbin 15 being wound.
  • the tube 16 is fit on the underlying rotating spindle 20 driven into rotation at high speeds, which currently are in the range of 10,000-20,000 rpm. In general, such driving is carried out with drive belts 22, which slidingly engage the lower part 21 of the bobbin carrier spindle 20.
  • the yarn 10 rotates in a whirling manner around the bobbin, forming the so-called “balloon” due to the centrifugal force.
  • the balloon is due to significant stress on the yarn 10 and can be limited with a containment ring 18, in general of slightly greater diameter than the transverse size of the bobbin 15.
  • the thread guide 11 is also mounted on a movable platform or rail 13, like the balloon containment ring 18 which is firmly mounted on a platform or rail 19 thereof, capable of vertical travel movements which keep them spaced from each other and in any case above the level of the ring-rail 14.
  • the three rails 14, 13 and 19 are guided with vertical guides 25 on the two faces of the spinning frame and lifted and lowered with a belt and pulley system 26 which periodically raises and lowers the three rails, in accordance with predetermined rates.
  • the yarn twisting is caused by the rotation of the bobbin 15 and extends, together with the relative stresses, up to the point at which the sliver of the yarn 10 is released by the final cylinders of the draft group 3.
  • the yarn twisting is caused by the rotation of the bobbin 15 and extends, together with the relative stresses, up to the point at which the sliver of the yarn 10 is released by the final cylinders of the draft group 3.
  • it is necessary to distribute it on the bobbin at different heights continuously changing the level of the rotating slider borne by the ring-rail 14, continuously moved in accordance with the arrow c) in two directions, and modulating the deposit so as to continuously raise the mid-point of the travel of the arrow c).
  • the deposit of the yarn 10 on the bobbin 15 generally starts in the lower part of the bobbin and rises upward in overlapped layers with conical progression, layers obtained with a series of slow, ascending movements of the ring-rail 14 following by sudden and slightly shorter descending movements.
  • the object of such bobbin winding method is essentially that of giving a tapered shape to the bobbin, so that the bobbin results compact, so that it does not break up during its unwinding, and so that the yarn is unwound, substantially unwinding layer-by-layer from its upper conical part.
  • the doffing device 30 shown in figures 2 and 3 is achieved with the following modes.
  • the device 30 is provided for moving tubes and bobbins between the bobbin carrier spindle 20 of each of the spinning units and a transport device, shown as an example with a service conveyor belt 27 on the two faces of the spinning frame, on which the pegs 28 circulate, composed of a disc base and provided with an upper vertical pin on which the empty tube or the finished bobbin to be transported are fit from time to time, respectively from the winder to the spinning frame or vice versa.
  • the transport device 27 can also be made as a metal strip which bears vertical pins fixed thereon.
  • a parking station is provided composed of a series of vertical pins 29, one for each ring spinning unit, which are integral with the fixed structure of the machine. As said, said positions between which bobbins and tubes are moved are shown in front view in figure 4 .
  • the doffing device 30 constitutes a particular feature of the invention and comprises:
  • the movable support 51 moves closer to or away from the fixed support 50 to which it is bound with the strut 53 and, respectively, it lifts or lowers the lifting arm 56 and with this lifts or lowers vertically the clamp carrier bar 31 to the desired work levels.
  • Salient feature and advantage of such pantograph 49 supporting the clamp carrier bar 31 is that it does not require back and forth rotary movements with respect to the face of the spinning frame for taking and placing the moved bobbins and tubes.
  • the doffing of the bobbins is carried out as follows, as an example.
  • the ring spinning process is governed by a governing and control unit which detects the achievement of the desired yarn quantity in meters, produced in bobbins on every spinning unit, and it commands the start of the doffing process of the completed bobbins 15 and their substitution with new tubes 16, on which new bobbins will have to be wound, operating in parallel over all the spinning units which compose the ring spinning frame.
  • the spinning frame first provides for binding the yarns 10 on the lower ring nuts of the bobbin carrier spindles 20, stopping the rotation of the spindles, lowering the ring-rail 14 and the balloon containment ring 18 in all the spinning units as well as raising the thread guide 11 so as to not interfere with the doffing members.
  • the doffing sequence is exemplifyingly carried out with the following steps:
  • the process according to the invention provides for freeing the spindles 20 of the finished bobbins and to fit the new tubes thereon, before starting the transportation of the bobbins towards the winding.
  • the completed bobbins are positioned on the parking station of the pins 29.
  • the spinning frame can start the so-called “spindleful", i.e. restart the production of new bobbins on the new changed tubes.
  • spindleful i.e. restart the production of new bobbins on the new changed tubes.
  • the space underneath the spindle carrier rail results free and is thus available both for reducing the height of the spinning frame, and for working with tubes of increasing length, or finally for inserting other devices without increasing the height of the spinning frame.
  • the travel path of the conveyor belts for tubes and bobbins is not affected by the bulk of the machine section, and can be placed at the sides of the control heads without modifying their shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Emergency Lowering Means (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
EP20080171085 2007-12-17 2008-12-09 Dispositif et processus pour le dégarnissage des bobines des métiers à filer à anneaux Withdrawn EP2083102A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20072352 ITMI20072352A1 (it) 2007-12-17 2007-12-17 Dispositivo e procedimento per la levata delle spoledai filatoi ad anello

Publications (1)

Publication Number Publication Date
EP2083102A2 true EP2083102A2 (fr) 2009-07-29

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EP20080171085 Withdrawn EP2083102A2 (fr) 2007-12-17 2008-12-09 Dispositif et processus pour le dégarnissage des bobines des métiers à filer à anneaux

Country Status (3)

Country Link
EP (1) EP2083102A2 (fr)
CN (1) CN101463513B (fr)
IT (1) ITMI20072352A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926059A (zh) * 2012-11-09 2013-02-13 际华三五零九纺织有限公司 车头轨道为可自由拆装式的自动落纱机
CN109112683A (zh) * 2018-08-10 2019-01-01 东莞仕达通自动化有限公司 一种自动落纱的机械手系统及其工作流程
EP3628760A1 (fr) * 2018-09-25 2020-04-01 Kabushiki Kaisha Toyota Jidoshokki Appareil de remplacement de bobine de métier à filer
CN115992404A (zh) * 2022-12-29 2023-04-21 福建长源纺织有限公司 一种细纱机一体化落纱装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103510208B (zh) * 2012-06-28 2015-09-30 千田机电有限公司 自动落纱机结构
CN103668596B (zh) * 2013-12-16 2017-02-08 铜陵松宝智能装备股份有限公司 用于环锭纺落纱机的落纱工艺
CN112095181B (zh) * 2020-08-27 2021-10-15 泰州万诺纺织科技有限公司 一种粗纱装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3718274B2 (ja) * 1995-01-27 2005-11-24 ザウラー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディトゲゼルシャフト 満粗紡ボビンを空粗紡チューブと自動的に交換するための装置を備えたフライヤ粗紡機
DE19622896C2 (de) * 1996-06-07 1999-11-25 Zinser Textilmaschinen Gmbh Betätigbares Greifelement für Hülsen an selbsttätigen Spulenwechselvorrichtungen von Ringspinnmaschinen
DE19631445A1 (de) * 1996-08-03 1998-02-05 Zinser Textilmaschinen Gmbh Vorspinnmaschine mit Spulenwechselvorrichtung
DE19718156C1 (de) * 1997-04-29 1998-08-06 Zinser Textilmaschinen Gmbh Vorrichtung zum Bestücken von Stifttellern mit leeren Hülsen im Bereich mindestens einer Textilmaschine, insbesondere Ringspinnmaschine
CN200967857Y (zh) * 2006-11-14 2007-10-31 安徽华茂纺织股份有限公司 细纱落纱装置
CN101016665A (zh) * 2007-03-07 2007-08-15 王伟 一种细纱机

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926059A (zh) * 2012-11-09 2013-02-13 际华三五零九纺织有限公司 车头轨道为可自由拆装式的自动落纱机
CN109112683A (zh) * 2018-08-10 2019-01-01 东莞仕达通自动化有限公司 一种自动落纱的机械手系统及其工作流程
EP3628760A1 (fr) * 2018-09-25 2020-04-01 Kabushiki Kaisha Toyota Jidoshokki Appareil de remplacement de bobine de métier à filer
CN115992404A (zh) * 2022-12-29 2023-04-21 福建长源纺织有限公司 一种细纱机一体化落纱装置

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Publication number Publication date
CN101463513A (zh) 2009-06-24
CN101463513B (zh) 2012-01-18
ITMI20072352A1 (it) 2009-06-18

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