EP2463416A2 - Dispositif d'ébauche pour procédé de préfilage - Google Patents

Dispositif d'ébauche pour procédé de préfilage Download PDF

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Publication number
EP2463416A2
EP2463416A2 EP20110192924 EP11192924A EP2463416A2 EP 2463416 A2 EP2463416 A2 EP 2463416A2 EP 20110192924 EP20110192924 EP 20110192924 EP 11192924 A EP11192924 A EP 11192924A EP 2463416 A2 EP2463416 A2 EP 2463416A2
Authority
EP
European Patent Office
Prior art keywords
suction
support
top roller
drafting device
suction duct
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Withdrawn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
EP20110192924
Other languages
German (de)
English (en)
Inventor
Makoto Yakushi
Masami Shinbara
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
Original Assignee
Toyota Industries Corp
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 Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP2463416A2 publication Critical patent/EP2463416A2/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Withdrawn legal-status Critical Current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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/46—Loading arrangements
    • D01H5/52—Loading arrangements using fluid pressure
    • D01H5/525—Loading arrangements using fluid pressure for top roller arms

Definitions

  • the present invention relates to a drafting device in a fore-spinning process and, more particularly, to a drafting device in a fore-spinning process having a drafting part clearer for the top rollers of the drafting device.
  • a sheet-metal frame construction is used as support arm for supporting four top rollers, namely turning roller, front roller, middle roller and back roller.
  • Floating fiber or cotton dust which is not held between paired draft rollers of the drafting device is likely to be attached to and entangled around the draft rollers of the drafting device. Consequently, drafted sliver may vary in weight or sliver may not be drafted.
  • Fig. 8 shows a clearer for clearing the top rollers of a 5-over-4 roller drafting device used in a drawing frame (see Japanese Utility Model Application Publication No. 7-33981 ).
  • each of the portal pressing arms 80 includes pneumatic cylinders 81A, 81B, a common support element 82, and cover elements 83A, 83B.
  • the pressing arms 80 are pivotable around a pivot bearing 85 with the top rollers 84 upward, as shown in Fig. 9 .
  • Bearings 86A, 86B receive the top roller 84 and are pressed by rams (piston rods) 87A, 87B of the pneumatic cylinders 81A, 81 B, respectively.
  • the present invention which has been made in view of the above problems is directed to a drafting device in a fore-spinning process having a drafting part clearer, wherein a pair of pressure devices that are operable to press a top roller against its corresponding bottom roller is supported by a common support arm and clearing of the top roller is accomplished by a simple suction structure.
  • the drafting device in a fore-spinning process having a drafting part clearer is characterized in that the drafting device includes a plurality of top rollers each having a top roller body and the drafting part clearer includes a plurality of support arms, a plurality of pairs of pressure devices and a suction duct.
  • the support arms support the respective top rollers.
  • Each support arm has an arm body through which a suction hole extends vertically at a position corresponding to the top roller body with the support arms set in operative position.
  • Each pair of pressure devices is mounted to the corresponding support arm on opposite sides of the support hole of the support arm.
  • the suction duct has a plurality of suction ports.
  • operative position of the support arm means the position of the support arm in which the top roller and its associated bottom roller cooperative to press therebetween a sliver or a fiber bundle.
  • the drafting device that is designated by reference numeral 11 includes a front bottom roller 12, a middle bottom roller 13 and a back bottom roller 14 for drafting a plurality of slivers S supplied from a plurality of combing heads of a comber (not shown).
  • Each of the bottom rollers 12, 13 and 14 is supported by a roller stand (not shown).
  • a front top roller 15, a middle top roller 16 and a back top roller 17 are located above the front bottom roller 12, the middle bottom roller 13 and the back bottom roller 14, respectively.
  • a turning top roller 18 is located adjacent to the front bottom roller 12 for changing the direction of movement of the fleece F delivered from the front bottom roller 12 and the front top roller 15 downward. That is, the drafting device 11 is of a 4-over-3 roller type.
  • a gatherer 19 is located adjacent to the front bottom roller 12 and the turning top roller 18.
  • a coiler mechanism has a coiler trumpet 20 disposed below the gatherer 19 and a pair of coiler calender rollers 21 disposed below the coiler trumpet 20.
  • the coiler mechanism has a tube wheel (not shown) used to store in a sliver can the slivers S that are moved from the gatherer 19 downward and recompressed by the coiler calender roller 21.
  • a drafting part clearer 22 is located above the drafting device 11 for clearing the top rollers 15-18.
  • the drafting part clearer 22 has support arms 23, 24, 25, 26 which support the top rollers 15-18 and has axially therethrough suction holes 23A, 24A, 25A, 26A, respectively, and a suction duct 27 having suction ports 27A, 27B, 27C, 27D via which suction is created in the suction holes 23A, 24A, 25A, 26A from above, respectively, as will be understood from later description.
  • the suction duct 27 has gum-magnet cover members 30 that are magnetically attached to the lower surface of the suction duct 27 at the positions corresponding to the suction ports 27B, 27C so as to cover the suction ports 27B, 27C, respectively, as shown in Fig. 1 .
  • Each gum-magnet cover member 30 serves as the opening adjusting member for adjusting the suction ports 27B, 27C, respectively. Moving the position of each cover member 30, the opening of the suction ports 27B, 27C is continuously adjustable between 0% and 100%.
  • a gum-magnet annular member 31 is magnetically attached to the lower surface of the suction duct 27 at the position corresponding to the suction ports 27A so as to surround the suction port 27A.
  • the gum-magnet annular member 31 has the same thickness as the cover member 30.
  • the suction duct 27 is made at least at the part thereof to which the cover members 30 are attached, of material, such as steel.
  • the support arm 23 for the front top roller 15 will be described on behalf of the support arms 23-26.
  • the suction hole 23A extends vertically through an arm body 33 of the support arm 23 and corresponds at the lower end thereof to a top roller body 32 of the top roller 15.
  • a pair of pressure devices 34 is mounted to the arm body 33 at positions on the opposite sides of the suction hole 23A.
  • the support arm 23 has a pair of support members 35 that support the ends of the rotary shafts 32A each projecting from the top roller body 32.
  • Each rotary shaft 32A is rotatably supported by a bearing 36.
  • the pair of pressure devices 34 includes pneumatic cylinders 37A, 37B each having a piston 38 with a piston rod 38A.
  • the arm body 33 has a pair of holes 39 each having a large-diameter hole and a small-diameter hole slidably receiving therein the piston 38 and the piston rod 38A, respectively.
  • Each piston rod 38A is contactable at the distal end thereof with the bearing 36.
  • a pair of housings 40, 41 is fixed on the arm body 33 so as to cover the large-diameter holes of the holes 39.
  • a duct 42 communicating with compressed air source (not shown) is connected to the housing 40.
  • Two housings 40, 41 are in communication with each other via a duct (part of which is shown in Figs. 3 and 4 ) so that pressurized air supplied from the compressed air source to the pneumatic cylinder 37A is supplied further to the pneumatic cylinder 37B.
  • the support arm 23 is pivotally supported at one end thereof adjacent to the pneumatic cylinder 37A by a support bracket (not shown) via a shaft 43.
  • the support arm 23 has at the other end thereof adjacent to the pneumatic cylinder 37B a pivoted lever 45.
  • the pivoted lever 45 is engaged with a retainer 44 formed on a frame of the comber when the support arm 23 is set in the operative position where the front top roller 15 and the front bottom roller 12 cooperate to hold therebetween a fiber bundle to be drafted.
  • the pivoted lever 45 indicated by the solid line of Fig. 2 may be disengaged from the retainer 44, as indicated by the chain double-dashed line of Fig. 2 , by turning the pivoted lever 45 counterclockwise.
  • the drafting device 11 is operated with the support arms 23-26 set in the operative position and the suction ports 27A-27D of the suction duct 27 set in facing relation to the suction holes 23A-26A of the support arms 23-26, as shown in Fig. 1 .
  • the bottom rollers 12-14 are driven so as to provide the desired draft ratio in accordance with operating condition.
  • a plurality of slivers S is drafted at a predetermined draft ratio into a fleece F which is delivered from the front bottom roller 12 and the front top roller 15.
  • the fleece F is then bundled into a single sliver S via the gatherer 19 and the coiler trumpet 20.
  • the sliver S is stored in the sliver can via the tube wheel.
  • the suction duct 27 While the drafting device 11 is operating, the suction duct 27 is set in the operative position and the suction ports 27A-27D are located in facing relation to the upper ends of the suction holes 23A-26A of the support arms 23-26 so that suction is created in the suction holes 23A-26A, as shown in Figs. 1 and 3 .
  • the suction duct 27 set in the operative position is located above the support arms 23-25 with the annular member 31 and the cover members 30 placed in contact with the upper surfaces of the support arms 23-25, respectively.
  • the top rollers 15-18 are subjected to strong suction force acting through the suction ports 27A-27D and the suction holes 23A-26A, respectively.
  • a plurality of slivers S supplied from a plurality of combing heads is arranged between the bottom rollers 12-14 and the top rollers 15-18 in the preparation for operation of the comber, or when maintenance of the bottom rollers 12-14 is to be performed, the support arms 23-26 need to be set in their retracted position as indicated by the chain double-dashed line of Fig. 5 that causes no interference by the top rollers 15-18.
  • Fig. 5 shows only the support arm 23 for the front top roller 15.
  • the suction duct 27 needs to be placed in the retracted position before the support arms 23-26 are placed in their retracted position.
  • the suction duct 27 is movable between the operative position and the retracted position by swinging around the cylindrical portion 29 extending parallel to the bottom rollers 12-14 of the drafting device 11.
  • the provision of any flat suction tubes for the top rollers 15-18 instead of the suction holes 23A-26A of the support arms 23-26 causes part of the suction tubes to interfere with the support arms 23-26 when the suction duct 27 is pivoted.
  • the suction duct 27 has the suction ports 27A-27D and the flat suction tube 28 at the position that causes no interference to the pivotal movement of the suction duct 27, however, the suction duct 27 is moved between the operative position and the retracted position without any trouble.
  • the opening of the suction ports 27B and 27C is adjustable so that appropriate suction is created in the suction holes 23A-26A through the suction ports 27A-27D. Such adjustment of the opening is performed by changing the position of the cover member 30, as shown in Fig. 6 .
  • the pressure devices 34 are not limited to the pneumatic cylinders 37A, 37B, but may be provided by the devices each having a coil spring 46 urging a piston 38 along a piston rod 38A, as shown in Fig. 7A .
  • the structure for supplying compressed air may be dispensed with, so that the structure of the drafting device 11 having the drafting part clearer 22 may be simplified and the manufacturing cost is reduced, accordingly.
  • Each of the support arms 23-26 may have a fluid passage 47 via which pressurized air supplied to the pneumatic cylinder 37A is also supplied to the pneumatic cylinder 37B.
  • the support arm 23 will be now described on behalf of the support arms 23-26.
  • the support arm 23 has a groove 48 and a pair of holes 49.
  • the groove 48 is formed in the upper part of the arm body 33 extending to the position adjacent to the holes 39 and opened upward without a cover 50 which will be mentioned later.
  • the groove 48 communicates with the paired holes 39 via the paired holes 49, respectively.
  • the cover 50 is provided on the top of the groove 48 so as to seal the groove 48.
  • the pneumatic cylinder 37B it is not necessary for the pneumatic cylinder 37B to have a housing such as 41 shown in Fig. 2 .
  • the structure for supplying pressurized air to the pneumatic cylinders 37A, 37B is simplified as compared to the structure for supplying pressurized air from the compressed air source to the pneumatic cylinders 37A, 37B separately.
  • the suction duct 27 may have the suction ports so that suction is created only in the suction holes 23A, 26A located in facing relation to the front top roller 15 and the turning top roller 18.
  • the front top roller 15 and the turning top roller 18 are susceptible to entanglement of fly or fleece.
  • drafting operation may be accomplished successfully without providing suction force to the middle top roller 16 and the back top roller 17.
  • the suction duct 27 may have the suction ports 27A, 27D only, dispensing with the suction ports 27B, 27C for the suction holes 24A, 25A of the support arms 24, 25.
  • the suction duct 27 having the opening adjusting member may be used with the opening of the suction ports 27B, 27C set at zero so that no suction is created in the suction holes 24A, 25A of the support arms 24, 25.
  • the suction duct 27 can be used advantageously in dealing with such fiber that should be drafted with the middle top roller 16 and the back top roller 17 subjected to suction.
  • the opening adjusting member of the suction duct 27 is not limited to the gum-magnet cover member 30.
  • the suction duct 27 may have any pivotable or slidable shutter. In either case, the opening of the suction duct 27 may be adjusted in a stepless manner.
  • the opening adjusting member of the suction duct 27 is not limited to the structure wherein the opening of the suction duct 27 is adjustable in a stepless manner.
  • the opening adjusting member may be moved to two positions, namely fully-opened position and fully-closed position, or alternatively to three positions, namely fully-opened position, partially-opened position and fully-closed position.
  • the support that pivotally supports the suction duct 27 is not limited to the cylindrical portion 29 that also serves to make communication between the suction duct 27 and the suction source, but the duct support may be provided separately from the part communicating with the suction source.
  • the suction duct 27 may dispense with the suction tube 28.
  • the drafting device 11 is not limited to the 3 roller type, but may be of a 4 roller type or of a 5 roller type. Alternatively, the drafting device 11 may be of a 2 roller type having a front roller and a back roller.
  • the drafting device according to the present invention is applicable not only to the drawing frame and the comber, but also to the spinning machine, such as a sliver lap machine or a ribbon lap machine, having a process in which a plurality of slivers is drafted by the drafting device and combined into a single sliver.
  • the drafting device according to the present invention is applicable not only to the drawing frame, the comber, and the spinning machine, such as a sliver lap machine or a ribbon lap machine, having a process in which a plurality of slivers is drafted by the drafting device and combined into a single sliver, but also to the spinning machine, such as a carding machine, having a process in which a wide fiber bundle (web) drafted by the drafting device is formed into a sliver.
  • the spinning machine such as a sliver lap machine or a ribbon lap machine, having a process in which a plurality of slivers is drafted by the drafting device and combined into a single sliver
  • the spinning machine such as a carding machine, having a process in which a wide fiber bundle (web) drafted by the drafting device is formed into a sliver.
  • a drafting part clearer includes a plurality of support arms, a plurality of pairs of pressure devices and a suction duct.
  • the support arms support a plurality of top rollers, respectively.
  • Each support arm has an arm body through which a suction hole extends vertically at a position corresponding to the top roller.
  • Each pair of pressure devices is mounted to the corresponding support arm on opposite sides of the support hole of the support arm.
  • the suction duct has a plurality of suction ports.
  • the suction duct is movable between operative position in which the suction ports are located in facing relation to the corresponding support holes so that suction is created in the support holes and retracted position in which pivotal movement of the support arm is allowed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20110192924 2010-12-13 2011-12-12 Dispositif d'ébauche pour procédé de préfilage Withdrawn EP2463416A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010276907A JP2012127007A (ja) 2010-12-13 2010-12-13 前紡工程のドラフト装置

Publications (1)

Publication Number Publication Date
EP2463416A2 true EP2463416A2 (fr) 2012-06-13

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ID=45218468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110192924 Withdrawn EP2463416A2 (fr) 2010-12-13 2011-12-12 Dispositif d'ébauche pour procédé de préfilage

Country Status (3)

Country Link
EP (1) EP2463416A2 (fr)
JP (1) JP2012127007A (fr)
CN (1) CN102560760A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3165635B1 (fr) 2015-11-03 2021-06-30 Trützschler GmbH & Co. KG Dispositif d'étirage
EP4253617A1 (fr) * 2022-03-28 2023-10-04 Maschinenfabrik Rieter AG Aspiration d'un emplacement de peignage dans une peigneuse

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015036456A (ja) * 2013-08-12 2015-02-23 株式会社豊田自動織機 前紡機における繊維束送出装置の清掃装置
CN104499127B (zh) * 2014-10-25 2016-07-06 浙江卓怡纺织有限公司 一种导棉牵伸装置
CN105155057B (zh) * 2015-10-26 2017-11-17 丛鑫浩 一种棉纺并条机
KR101748864B1 (ko) 2016-10-19 2017-06-19 주식회사 아즈텍더블유비이 하이브리드 방적기술을 이용한 하이브리드 울 얀의 제조방법
DE102018207163A1 (de) * 2018-05-08 2019-11-14 Dahmen Textilmaschinen Gmbh Spulenreinigungseinheit
DE102019116234A1 (de) * 2019-06-14 2020-12-17 Saurer Intelligent Technology AG Spinnmaschine
CN113388933B (zh) * 2021-06-03 2022-07-01 东台市润生纺机专件有限公司 一种高精度的紧密纺细纱罗拉

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004060141A (ja) 2002-07-29 2004-02-26 Truetzschler Gmbh & Co Kg ドラフト装置のトップローラの加重を行う繊維スライバ用のドローフレームの装置

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DE4037006A1 (de) * 1990-11-21 1992-05-27 Stahlecker Fritz Vorrichtung zum reinigen einer druckwalze eines streckwerkes
JP2001049540A (ja) * 1999-07-29 2001-02-20 Hara Shokki Seisakusho:Kk 紡機のドラフト装置の清掃方法及び紡機のドラフト装置
DE10033188A1 (de) * 2000-07-07 2002-01-17 Stahlecker Fritz Vorrichtung zum Verstrecken und Verdichten eines Faserverbandes
JP4419703B2 (ja) * 2004-06-22 2010-02-24 株式会社豊田自動織機 紡機における繊維束集束装置
CN100545330C (zh) * 2007-12-31 2009-09-30 经纬纺织机械股份有限公司 精梳机吸落棉风道
CN201268745Y (zh) * 2008-09-20 2009-07-08 魏桥纺织股份有限公司 精梳机牵伸部位清洁装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004060141A (ja) 2002-07-29 2004-02-26 Truetzschler Gmbh & Co Kg ドラフト装置のトップローラの加重を行う繊維スライバ用のドローフレームの装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3165635B1 (fr) 2015-11-03 2021-06-30 Trützschler GmbH & Co. KG Dispositif d'étirage
EP4253617A1 (fr) * 2022-03-28 2023-10-04 Maschinenfabrik Rieter AG Aspiration d'un emplacement de peignage dans une peigneuse

Also Published As

Publication number Publication date
CN102560760A (zh) 2012-07-11
JP2012127007A (ja) 2012-07-05

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