EP4215653A1 - Dispositif de condensation de faisceau de fibres pour métier à filer - Google Patents

Dispositif de condensation de faisceau de fibres pour métier à filer Download PDF

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Publication number
EP4215653A1
EP4215653A1 EP22199964.2A EP22199964A EP4215653A1 EP 4215653 A1 EP4215653 A1 EP 4215653A1 EP 22199964 A EP22199964 A EP 22199964A EP 4215653 A1 EP4215653 A1 EP 4215653A1
Authority
EP
European Patent Office
Prior art keywords
fiber bundle
countershafts
drive gear
condensing device
countershaft
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.)
Pending
Application number
EP22199964.2A
Other languages
German (de)
English (en)
Inventor
Hisaaki Hayashi
Motohiro Kawai
Tetsuya Ashizaki
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 EP4215653A1 publication Critical patent/EP4215653A1/fr
Pending 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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • 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
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • D01H1/025—Spinning or twisting machines in which the product is wound-up continuously ring type with a condensing device between drafting system and spinning unit
    • 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
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control

Definitions

  • the present invention relates to a fiber bundle condensing device for a spinning machine.
  • Such fiber bundle condensing devices include a countershaft for rotating a rotary shaft on which a delivery bottom roller delivering fiber bundles is mounted. A rotational force of the countershaft is transmitted to the rotary shaft with a drive gear mounted on the countershaft engaged with a driven gear mounted on the rotary shaft.
  • European Patent Application Publication No. 1473388 discloses a relationship between a rotary shaft on which a delivery bottom roller is mounted and a countershaft transmitting a rotating force to the rotary shaft in a fiber bundle condensing device.
  • a spinning machine In a spinning machine, a plurality of fiber bundle condensing devices are arranged in parallel to each other to form a unit, and a plurality of units of the fiber bundle condensing devices are arranged in parallel to each other.
  • the spinning machine includes a plurality of countershafts each having a drive gear connected in a series so as to correspond to the plurality of the units of fiber bundle condensing devices.
  • the drive gears mounted on the countershafts need to be replaced temporarily or periodically due to damage or wear caused by catching foreign objects, or the like, during operation.
  • the device disclosed in the above-cited Publication lacks consideration for the replacement of the drive gears. Therefore, there is a demand for replacing the drive gears mounted on the countershafts quickly without reducing the productivity of the spinning machine and without using special parts.
  • the present invention is directed to providing a fiber bundle condensing device for a spinning machine in which a drive gear, which is mounted on a countershaft driving to rotate a rotary shaft of a delivery bottom roller that transports fiber bundles, can be replaced quickly without using special parts and without reducing productivity of the spinning machine.
  • a fiber bundle condensing device for a spinning machine including a condensing device configured to condense a fiber bundle which has been drafted, the condensing device including a delivery bottom roller that is mounted on a rotary shaft and transports the fiber bundle, a suction portion that exerts suction acting on the fiber bundle, an air-permeable apron that rotates along the suction portion, and a delivery top roller that is pressed against and in contact with the delivery bottom roller with the air-permeable apron interposed between the delivery top roller and the delivery bottom roller and rotates together with the delivery bottom roller, a countershaft configured to drive the rotary shaft, a driven gear mounted on the rotary shaft and configured to receive a driving force from the countershaft, and a drive gear mounted on the countershaft and configured to be engaged with the driven gear.
  • the fiber bundle condensing device includes a plurality of the countershafts corresponding to a plurality of the condensing devices, the plurality of the countershafts being connected by a coupling.
  • a conditional expression W > d ⁇ (1/4) x W is satisfied, where W represents a width of the drive gear and d represents a distance between ends of the plurality of countershafts connected by the coupling.
  • FIG. 1A illustrates a fiber bundle condensing device 100
  • FIG. 1B illustrates a countershaft 130 of the fiber bundle condensing device 100.
  • the fiber bundle condensing device 100 is disposed downstream of a draft device (not illustrated), and is configured to condense fiber bundles drafted by the draft device for reducing fluff or the like prior to twisting.
  • the draft device is disposed on a rear of the fiber bundle condensing device 100 of the illustration of FIG. 1A .
  • the fiber bundles are processed by the fiber bundle condensing device 100, and delivered to a lower front of the fiber bundle condensing device 100 in the illustration of FIG. 1A .
  • the fiber bundle condensing device 100 includes a plurality of condensing devices 110, a plurality of support plates 120, and the countershaft 130 as main components.
  • the condensing devices 110 cooperate to include a rotary shaft 111, a plurality of delivery bottom rollers 112, a plurality of suction portions 114, a plurality of air-permeable aprons 116, a plurality of delivery top rollers 118, and end plugs 119.
  • the plurality of the delivery bottom rollers 112 and a driven gear 113 are mounted on the rotary shaft 111.
  • a drive gear 132 is mounted on the countershaft 130.
  • the drive gear 132 mounted on the countershaft 130 drive to rotate the driven gear 113 of the rotary shaft 111.
  • the driven gear 113 that is configured to receive a driving force from the countershaft 130 is mounted on the rotary shaft 111.
  • the delivery bottom rollers 112 rotate together with the rotary shaft 111, which rotates the air-permeable aprons 116 and transports fiber bundles F.
  • Each of the suction portion 114 includes a plurality of suction holes.
  • the suction portions 114 exert suction acting on the fiber bundles F transported from the delivery bottom rollers 112 through the air-permeable aprons 116.
  • the air-permeable aprons 116 are made of air-permeable woven cloth having no ends.
  • the air-permeable aprons 116 are wound on their associated delivery bottom rollers 112, the suction portions 114, and guide portions (not illustrated).
  • Each of the delivery top rollers 118 is pressed against and in contact with its associated one of the delivery bottom roller 112 with the air-permeable apron 116 interposed therebetween.
  • the delivery top rollers 118 rotate together with the delivery bottom rollers 112, thereby transporting the fiber bundles F.
  • the condensing devices 110 for eight spindles are arranged between the support plates 120.
  • a group of the condensing devices 100 for the eight spindles i.e., a condensing device group
  • a plurality of the units formed of the condensing device group are disposed along a longitudinal direction of the spinning machine.
  • the rotary shaft 111 has a predetermined length corresponding to the condensing device group for the eight spindles.
  • the end plugs 119 are disposed on opposite ends of the rotary shaft 111. The end plugs 119 allow the rotary shaft 111 to be supported rotatably by the pair of support plates 120.
  • the support plates 120 are fixed to a roller stand (not illustrated).
  • the countershaft 130 has a predetermined length corresponding to the condensing device group for the eight spindles.
  • the countershafts 130 is supported by the roller stand (not illustrated) via a bearing 140.
  • the drive gear 132 to be engaged with the driven gear 113 of the rotary shaft 111 is mounted on the countershaft 130.
  • the countershafts 130 drives the rotary shaft 111 through the drive gear 132 and the driven gear 113.
  • a plurality of the countershafts 130 corresponding to the units of the condensing device group are connected to each other by couplings 150 in the longitudinal direction of the spinning machine.
  • the fiber bundles F are transported while being held between the delivery bottom rollers 112 and the delivery top rollers 118, which rotate with rotation of the rotary shaft 111 driven by the associated countershaft 130, and being drawn by suction of the suction portions 114 through the air-permeable aprons 116.
  • FIG. 2A illustrates a state where three countershafts 130a, 130b, 130c are connected by couplings 150a, 150b.
  • a drive gear 132a is mounted on the countershaft 130a.
  • FIG. 2B illustrates a state where the three countershafts 130a , 130b, 130c are disconnected by unfastening the couplings 150a, 150b.
  • Broken lines in FIG. 2B indicate a state where the couplings 150a, 50b are removed from the three countershafts 130a, 130b, 130c.
  • the countershaft 130b is disconnected by unfastening the two couplings 150a and 150b.
  • the position of the disconnected countershaft 130b is moved in an axial direction of the countershaft 130b toward a side opposite to the drive gear 132a to be replaced.
  • the position of the countershaft 130b is moved in the axial direction so as to decrease the distance d in an area where the coupling 150b has been positioned.
  • conditional expression W > d ⁇ (1/2) x W may be resolved into W > d and W ⁇ 2d.
  • a dimension of the width W of the drive gear 132a is greater than a dimension of the distance d between the ends of the countershafts 130a and 130b connected to each other by the coupling 150a. Therefore, the drive gear 132a cannot pass a gap formed of the distance d when only the coupling 150a is removed, so that the drive gear 132a cannot be removed.
  • the width W is equal to or greater than the distance 2d (W ⁇ 2d).
  • the drive gear 132a having the width W can pass the gap formed of the distance 2d between the countershafts 130a and 130b, which has been extended.
  • the width W is 20 mm and the distance d is 17 mm, for example.
  • the drive gear 132a having the width of 20 mm can pass the gap formed of the distance 2d of 34 mm, which is doubled.
  • the drive gear may be replaced quickly by removing only the drive gear 132a without using special parts, such as a dividable drive gear, without pulling out all the connected plurality of the countershafts 130 from the spinning machine, and without reducing the productivity of the spinning machine.
  • conditional expression W > d ⁇ (1/2) x W in which the number of couplings to be removed is the minimum of 2 has been described.
  • the number of couplings to be removed may be 3 with the conditional expression W > d ⁇ (1/3) x W, or the number of the couplings to be removed may be 4 with the conditional expression W > d ⁇ (1/4) x W.
  • the width W is equal to or greater than the distance 3d (W ⁇ 3d).
  • the drive gear 132a having the width W can pass the gap of the distance 3d between the countershafts 130a and 130b.
  • the width W is 20 mm and the distance d is 8 mm, for example.
  • the drive gear 132 having the width of 20 mm cannot pass the originally provided gap of 8 mm, but can pass the gap of the distance 3d of 24 mm, which is tripled.
  • the drive gear 132 can be easily replaced similarly.
  • the width W is 20 mm and the distance d is 6 mm, for example. Therefore, it is effective for a configuration in which a difference in dimension between the width W and the distance d is great, a configuration in which the dimension of the distance d is small, or the like.
  • the drive gear 132 having the width of 20 mm cannot pass the originally provided gap of 6 mm, but can pass the gap of the distance 4d of 24 mm, which is quadrupled.
  • the drive gear 132 can be replaced quickly, without using special parts and without reducing the productivity, in the fiber bundle condensing device 100 having the countershafts 130 driving the rotary shaft 111 rotatably on which the delivery bottom rollers 112 transporting the fiber bundles F are mounted.
  • the drive gear 132 may be replaced only by removing two to four couplings 150 and moving one to three countershafts 130, which hardly affects areas other than the area where these parts are positioned.
  • the drive gears 132 may be replaced only by removing four couplings 150 at most and moving positions of the countershafts 130 in the axial direction, which significantly improves workability, as compared to a case where a series of the countershafts 130 for a plurality of the units of the condensing device group is pulled out from the spinning machine.
  • the coupling 150 may have unbalanced rotation characteristics due to its structural features. Such unbalanced rotation characteristics of the coupling 150 may cause unbalanced rotation of the countershafts 130. Therefore, it is desirable to dispose the coupling 150 near the bearing 140 that supports the countershafts 130.
  • a yarn path corresponding to a passage of the fiber bundle F is positioned about ⁇ 30 mm from the roller stand to which the bearings 140 are fixed due to the restriction on the layout of the spinning machine.
  • the coupling 150 need be arranged at a position avoiding the position of the yarn path.
  • the coupling 150 may be positioned between the first spindle and the second spindle when the unbalance rotating force of the couplings 150 is greater than the reaction force of the drive gear 132.
  • the drive gear 132 to be engaged with the driven gear 113 is mounted on the countershaft 130.
  • the countershafts 130 are connected to each other by the couplings 150.
  • the plurality of countershafts 130 correspond to the plurality of the condensing devices 110.
  • the fiber bundle condensing device 100 is configured to satisfy the conditional expression W > d ⁇ (1/4) x W, where W represents the width of the drive gear 132 and d represents the distance between the ends of the countershafts 130 adjacent to each other connected via the coupling 150.
  • the drive gear may be replaced quickly by removing only the drive gear 132a without using special parts and without reducing the productivity. Since the drive gears 132 may be replaced only by removing four couplings 150 at most and moving positions of the countershafts 130 in the axial direction, which significantly improves workability, as compared to a case where a series of the countershafts 130 for a plurality of units of the condensing device group is pulled out from the spinning machine.
  • the fiber bundle condensing device 100 of the spinning machine is configured to satisfy the conditional expression W > d ⁇ (1/2) x W, where W represents the width of the drive gear 132 and d represents the distance between the ends of the countershafts 130 adjacent to each other connected by the coupling 150.
  • W represents the width of the drive gear 132
  • d represents the distance between the ends of the countershafts 130 adjacent to each other connected by the coupling 150.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Basic Packing Technique (AREA)
EP22199964.2A 2022-01-25 2022-10-06 Dispositif de condensation de faisceau de fibres pour métier à filer Pending EP4215653A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2022009028A JP2023108077A (ja) 2022-01-25 2022-01-25 紡機の繊維束集束装置

Publications (1)

Publication Number Publication Date
EP4215653A1 true EP4215653A1 (fr) 2023-07-26

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ID=83689019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22199964.2A Pending EP4215653A1 (fr) 2022-01-25 2022-10-06 Dispositif de condensation de faisceau de fibres pour métier à filer

Country Status (3)

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EP (1) EP4215653A1 (fr)
JP (1) JP2023108077A (fr)
CN (1) CN116497480A (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300495A1 (fr) * 2001-10-04 2003-04-09 Kabushiki Kaisha Toyota Jidoshokki Dispositif de condensation de fibres pour machine à filer
EP1473388A2 (fr) 2003-04-30 2004-11-03 Pinter, S.A. Dispositif de condensation pour des machines à filer
DE102005010903A1 (de) * 2004-03-11 2005-09-29 Pinter, S.A., Santpedor Betätigungsvorrichtung für Faserverdichtungsmechanismen in Strecksystemen von Spinnmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300495A1 (fr) * 2001-10-04 2003-04-09 Kabushiki Kaisha Toyota Jidoshokki Dispositif de condensation de fibres pour machine à filer
EP1473388A2 (fr) 2003-04-30 2004-11-03 Pinter, S.A. Dispositif de condensation pour des machines à filer
DE102005010903A1 (de) * 2004-03-11 2005-09-29 Pinter, S.A., Santpedor Betätigungsvorrichtung für Faserverdichtungsmechanismen in Strecksystemen von Spinnmaschinen

Also Published As

Publication number Publication date
CN116497480A (zh) 2023-07-28
JP2023108077A (ja) 2023-08-04

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