EP2682508A2 - Système de curseur de machine à filer à anneaux - Google Patents

Système de curseur de machine à filer à anneaux Download PDF

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Publication number
EP2682508A2
EP2682508A2 EP20130173525 EP13173525A EP2682508A2 EP 2682508 A2 EP2682508 A2 EP 2682508A2 EP 20130173525 EP20130173525 EP 20130173525 EP 13173525 A EP13173525 A EP 13173525A EP 2682508 A2 EP2682508 A2 EP 2682508A2
Authority
EP
European Patent Office
Prior art keywords
ring
traveler
recesses
grooves
width
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.)
Granted
Application number
EP20130173525
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German (de)
English (en)
Other versions
EP2682508A3 (fr
EP2682508B1 (fr
Inventor
Tsutomu Nakano
Naoki Maruyama
Naomichi Tominaga
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 EP2682508A2 publication Critical patent/EP2682508A2/fr
Publication of EP2682508A3 publication Critical patent/EP2682508A3/fr
Application granted granted Critical
Publication of EP2682508B1 publication Critical patent/EP2682508B1/fr
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Anticipated expiration legal-status Critical

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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
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/52—Ring-and-traveller arrangements
    • D01H7/60—Rings or travellers; Manufacture thereof not otherwise provided for ; Cleaning means for rings
    • D01H7/602—Rings
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/52—Ring-and-traveller arrangements
    • D01H7/60—Rings or travellers; Manufacture thereof not otherwise provided for ; Cleaning means for rings
    • D01H7/604—Travellers

Definitions

  • the present invention relates to a ring-traveler system of a ring spinning machine, and more particularly, to a ring-traveler system of a ring spinning machine that is free from liquid lubrication.
  • Japanese National Phase Laid-Open Patent Publication No. 2002-510755 proposes the application of a surface treatment to the rings of a ring spinning frame or a ring twisting frame.
  • the surface treatment reduces friction and is performed by plating hard chromium.
  • the publication describes that the hard chromium plating preferably has a thickness of 1 to 60 ⁇ m and a maximum roughness Ra of 0.3 ⁇ m.
  • WO2004/035255 describes a method for forming a microscopic periodic structure that reduces the friction resistance of a material surface. Specifically, a femtosecond pulsed laser beam is emitted to and scanned over the material surface so as to overlap irradiated portions. The interference between incident light and scattering light extending along the material surface causes ablation that forms a periodic structure.
  • the periodic structure has submicron intervals and groove depths.
  • one aspect of the present invention is a ring-traveler system of a ring spinning machine.
  • the ring-traveler system is of a non-liquid lubrication type.
  • the ring-traveler system includes a ring and a traveler that travels along the ring.
  • a plurality of recesses and a plurality of flat ridges are arranged alternately on a surface portion of one of the ring and the traveler. The other one of the ring and the traveler slides on the surface portion when the traveler travels.
  • Each of the recesses has a depth of 0.1 to 20 ⁇ m.
  • Each of the flat ridges has a width of 1 to 250 ⁇ m.
  • the ring spinning machine includes a ring spinning frame and a ring twisting frame that wind a yarn through a traveler that slides along a ring, which is supported by a ring rail and lifted and lowered.
  • the recess includes a groove and a dimple surround by a flat surface.
  • FIG. 1A to 6B a first embodiment of a ring-traveler system of a ring spinning frame will now be described.
  • a ring-traveler system includes a ring 11 and a traveler 12.
  • the ring 11 includes a flange 11a having a T-shaped cross-section.
  • the traveler 12 has a C-shaped cross-section.
  • the ring 11 is made of a bearing steel.
  • a plating layer 13 is applied to the flange 11a as shown in Figs. 1B and 1C .
  • the plating layer 13 is chromium plating having a thickness of about 10 to 20 ⁇ m.
  • the plating layer 13 includes a periodic structure 14 (texture) in the surface portion on which the traveler 12 slides when the traveler 12 travels.
  • the periodic structure 14 is formed on the inner circumference surface of the flange 11 a as shown in Fig. 1C .
  • the periodic structure 14 includes grooves 15 and flat ridges 16 that are alternately arranged.
  • the grooves 15 are also referred to as recesses.
  • Each groove 15 has a depth of 0.1 to 20 ⁇ m.
  • each groove 15 has a depth of 5 ⁇ m or less.
  • Each flat ridge 16 has a width of 1 to 250 ⁇ m.
  • each flat ridge 16 has a width of 10 to 50 ⁇ m.
  • each groove 15 may have a groove width W1 that is the same as a ridge width W2, which is the width of the flat ridge 16. Further, the groove width W1 may be wider as shown in Fig. 2B or narrower as shown in Fig. 2C than the ridge width W2. In addition, the grooves 15 may extend perpendicular to the circumferential direction of the ring 11 as shown in Fig. 3A , parallel to the circumferential direction of the ring 11 as shown in Fig. 3B , or diagonally to the circumferential direction of the ring 11 as shown in Fig. 3C . In Figs. 3A to 3C , the circumferential direction extends in the sideward direction.
  • the periodic structure 14 is formed, for example, by emitting a femtosecond pulsed laser to the portion of the ring 11 where the periodic structure 14 is to be formed.
  • a yarn Y which is fed from a draft part (not shown), passes through the traveler 12 as shown in Fig. 1C and is wound around a bobbin (not shown) that rotates at a high speed.
  • the maximum rotation speed of the ring spinning frame during a normal spinning operation is about 25,000 rpm.
  • the yarn Y applies tension, when being wound, to the traveler 12 so that the traveler 12 travels along the flange 11a.
  • the orientation of the running traveler 12 slightly varies depending on the rotation speed, the traveler 12 travels in contact with the inner lower portion of the flange 11 a.
  • the ring-traveler system of the present embodiment includes the ring 11 with a surface portion provided with the periodic structure 14 on which the traveler 12 slides when the traveler 12 travels.
  • the periodic structure 14 includes the grooves 15 and the flat ridges 16 that are alternately arranged.
  • the grooves 15 produce a wedge effect with the surrounding air and discharges foreign substances such as abrasion particles from the contact interface of the traveler 12 and the ring 11.
  • a friction reduction effect is achieved without using liquid lubrication.
  • the grooves 15 do not wear since the traveler 12 slides along the flat ridges 16.
  • the present embodiment improves the friction reduction effect as compared to a conventional system, and the friction reduction effect continues for a long time.
  • a conventional ring that has been used for a long time may be recycled by forming the periodic structure 14.
  • rings 11 having periodic structures that do not include flat ridges were prepared to evaluate the effectiveness of the periodic structure 14.
  • the periodic structures were formed by emitting a femtosecond pulsed laser to the designated portions of the rings 11.
  • a ring-traveler system was prepared that included three different types of rings 11.
  • the first ring 11 included periodic ridges and grooves arranged perpendicular to the circumferential direction of the ring 11.
  • the second ring 11 included periodic ridges and grooves arranged parallel to the circumferential direction.
  • the third ring 11 included periodic ridges and grooves arranged diagonally to the circumferential direction.
  • a ring-traveler system was prepared that included a commercial ring without a periodic structure.
  • a spinning test was conducted without performing any preconditioning operations.
  • the systems were tested until the traveling distance of each traveler 12 reached 6,600 km (33 doffing operations x 200 km of traveling distance of traveler 12 until doffing operations) to evaluate the relationship between the traveling resistance and the traveling distance.
  • the traveling resistance was obtained by rotatably supporting the ring and measuring the drag force applied to the ring by the traveler.
  • the ring-traveler systems including the periodic structures 14 all had lower traveling resistances than the system including the commercial ring until the traveling distance reached 2,200 km. Then, between 2,600 and 4,200 km, the systems having the parallel and oblique periodic structures 14 had traveling resistances that were 30% lower than that of the system with commercial ring. However, the system with the perpendicular periodic structure 14 lost its superiority over the system with the commercial ring when reaching 13 doffing operations.
  • the rings 11 each have the periodic structures 14 formed by periodic ridges and grooves arranged diagonally to the circumferential direction of the rings 11 (sideward direction as viewed in Fig. 4 ). As shown in Figs. 4A to 4C , the rings 11 vary in groove width W1 and ridge width W2 of the flat ridges 16. In Figs. 4A to 4C , the shaded portions are grooves 15, and the non-shaded portions are flat ridges 16.
  • Fig. 5 shows the test results. As shown in Fig. 5 , in the high-speed spinning after the preconditioning operation, all the rings 11 including the periodic structures 14 had lower traveling resistances than the commercial ring. The test verified the effectiveness of the periodic structure 14.
  • samples having a smaller groove depth have smaller traveling resistances.
  • samples having a groove width W1 of 20 ⁇ m and a ridge width W2 of 20 ⁇ m samples having a groove width W1 of 40 ⁇ m and a ridge width W2 of 20 ⁇ m (samples 3 and 6)
  • the samples with the lower groove depth (1 ⁇ m) had lower traveling resistances than the samples with the greater depth (5 ⁇ m).
  • a groove depth of 1 ⁇ m is more preferable than a groove depth of 5 ⁇ m.
  • the travelers 12 were checked for abrasion.
  • the traveler 12 used with the commercial ring had an abrasion 20 in the surface portion that was in contact with the ring.
  • the traveler 12 that was used with the ring 11 having the periodic structure 14 had an abrasion 20' that was smaller than the abrasion 20.
  • the second embodiment differs from the first embodiment in that the recesses are formed by dimples 17 instead of grooves 15. Like or same reference numerals are given to those components that are the same as the corresponding components of the first embodiment. Such components will not be described in detail.
  • each dimple 17 has a round opening.
  • Each dimple 17 has a diameter of 5 to 50 ⁇ m and a depth of 1 to 10 ⁇ m. Adjacent dimples 17 are separated from each other by a distance of 10 to 100 ⁇ m.
  • the dimples 17 satisfy the conditions in which the recesses having a depth of 0.1 to 20 ⁇ m and the flat ridges having a width of 1 to 250 ⁇ m are alternately arranged.
  • the dimples 17 are formed by performing bead blasting on the portion of the ring 11 where a periodic structure is to be formed.
  • a ring-traveler system was prepared that includes a ring 11.
  • the portion of the ring 11 that requires a periodic structure included dimples 17 having a diameter of 10 ⁇ m and a depth of 2 ⁇ m. Adjacent dimples 17 were separated by a distance of 70 ⁇ m.
  • a ring-traveler system was prepared that includes a commercial ring that does not have dimples 17.
  • a spinning test was conducted on the two systems. Spinning was performed by increasing the rotation speed in steps from 15,000 to 21,000 rpm in a preconditioning operation performed until the traveling distance reached 1,400 km. From the traveling distance of 1,600 km, spinning was performed at a high rotation speed of 22,000 rpm.
  • Fig. 8 shows the test results. As shown in Fig. 8 , in the high-speed spinning after the preconditioning operation, the ring 11 with the dimples 17 had a lower traveling resistance than the commercial ring. The test verified the effectiveness of the dimples 17.
  • the traveler 12 was checked for abrasion. As shown in Fig. 9B , the traveler 12 used with the commercial ring had an abrasion 20 in the surface portion that was in contact with the ring. However, as shown in Fig. 9A , the traveler 12 used with the ring 11 including the dimples 17 had an abrasion 20' that was smaller than the abrasion 20.
  • the second embodiment has the following advantage in addition to advantage (1) of the first embodiment.
  • a groove 15 or dimple 17, which serves as a recess may have a wall surface to which a solid lubrication coating layer 18 is applied.
  • the solid lubrication coating layer 18 is formed from a fluorine resin, for example.
  • the groove width W1, the groove depth D, the dimple diameter, and dimple depth are preferably set to be several micrometers or greater so that the groove 15 or the dimple 17 are not filled with the solid lubrication coating layer 18.
  • the groove 15 or dimple 17 including the solid lubrication coating layer 18 facilitates the discharge of fibers, abrasion particles, and other foreign matters from the groove 15 or the dimple 17. This avoids a decrease in the wedge effect of the recesses and the capability to discharge abrasion particles and other foreign matter from the contact surfaces of the traveler 12 and the ring 11.
  • the solid lubrication coating layers 18 only need to be formed in at least the recesses. Further, in addition to the wall surfaces of the grooves 15 or dimples 17, the solid lubrication coating layer 18 may be formed on the flat ridges 16. When forming the solid lubrication coating layer 18 on the flat ridge 16, after replacement of the traveler 12, cooperation is improved between the traveler 12 and the ring 11.
  • the groove 15 does not have to be symmetrical relative to a center line in the widthwise direction.
  • the groove 15 may have a deepest portion formed in one side located near a flat ridge 16, an arcuate surface extending from the deepest portion to the flat ridge 16, and an oblique surface extending from the deepest portion to a flat ridge 16 at the other side of the groove 15.
  • the grooves 15 do not have to extend in one direction.
  • the grooves 15 may include the grooves 15 extending parallel to the circumferential direction of the ring 11 and the grooves 15 extending diagonally to the circumferential direction of the ring 11.
  • the grooves 15 may include two types of diagonal grooves 15 that form the same angle with the circumferential direction but extend in the opposite directions.
  • Each groove 15 extending diagonally to the circumferential direction of the ring 11 does not have to be arranged at an angle of 45° relative to the circumferential direction and may be arranged at any angle.
  • the dimple 17 does not have to have a round opening.
  • each dimple 17 may have an oval, elliptical rectangular, tetragonal, or polygonal opening.
  • the dimples 17 having openings that are not round may be formed by emitting an extremely-short pulse laser such as a femtosecond pulsed laser instead of performing bead blasting.
  • the dimples 17 are not required to have a uniform shape or size. As shown in Fig. 12 , the dimples 17 may vary in shape and size. That is, the dimples 17 do not have to form a periodic structure.
  • the periodic structure 14 may be formed on the flange 11a without the plating layer 13. However, when the ring 11 is formed from the material used for present commercially available rings, the formation of plating layer 13 is desirable.
  • the flange 11 a of the ring 11 of the ring-traveler system is not required to have a T-shaped cross section.
  • the ring 11 may include a tilted flange 11a as shown in Fig. 11C .
  • This structure requires a traveler 12 having a shape corresponding to the tilted flange 11a.
  • a method for forming the periodic structure 14 is not limited to the application of an extremely-short pulse laser such as a femtosecond pulsed laser to the portion that requires the periodic structure 14.
  • an extremely-short pulse laser such as a femtosecond pulsed laser
  • any chemical or physical process such as micro-etching may be performed.
  • the present invention is not applicable to a ring-traveler system that uses liquid lubrication since a yarn Y may be smeared with the liquid lubrication.
  • the present invention is applicable to a ring-traveler system that uses solid lubrication such as polytetrafluoroethylene.
  • the periodic structure 14 may be formed on the traveler 12 of the ring-traveler system instead of the ring 11. However, the periodic structure 14 is preferably formed on the ring 11 since the periodic structure 14 on the traveler 12 has a significantly smaller area than the periodic structure 14 on the ring 11.
  • the present invention may be embodied in other spinning machines having rings, such as a ring twisting frame.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Ropes Or Cables (AREA)
EP13173525.0A 2012-07-04 2013-06-25 Système de curseur de machine à filer à anneaux Active EP2682508B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012150492 2012-07-04
JP2013094011A JP5910569B2 (ja) 2012-07-04 2013-04-26 リング式紡機のリング／トラベラ系

Publications (3)

Publication Number Publication Date
EP2682508A2 true EP2682508A2 (fr) 2014-01-08
EP2682508A3 EP2682508A3 (fr) 2015-05-27
EP2682508B1 EP2682508B1 (fr) 2016-07-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13173525.0A Active EP2682508B1 (fr) 2012-07-04 2013-06-25 Système de curseur de machine à filer à anneaux

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EP (1) EP2682508B1 (fr)
JP (1) JP5910569B2 (fr)
CN (1) CN103526357B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2933362A1 (fr) * 2014-04-16 2015-10-21 Kabushiki Kaisha Toyota Jidoshokki Système anneau-curseur de machine à filer à anneaux
EP3009542A1 (fr) * 2014-10-15 2016-04-20 Kabushiki Kaisha Toyota Jidoshokki Dispositif à anneau et curseur pour métier à filer à anneau

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6149838B2 (ja) 2014-10-15 2017-06-21 株式会社豊田自動織機 リング式紡機のリング／トラベラ系
JP7163632B2 (ja) * 2018-06-26 2022-11-01 株式会社豊田自動織機 リング式紡機のリング／トラベラ系
CN109234864A (zh) * 2018-10-08 2019-01-18 合肥经新纺织科技有限公司 一种双捻纱同步生产装置和生产方法
JP7390969B2 (ja) * 2020-05-12 2023-12-04 株式会社豊田中央研究所 精紡機用リングおよびその製造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002510755A (ja) 1998-04-02 2002-04-09 ブレッカー アクチェンゲゼルシャフト リング精紡機およびリングねん糸機のためのリング
WO2004035255A1 (fr) 2002-09-27 2004-04-29 Nec Machinery Corporation Procede de formation d'une structure cyclique et procede de traitement de surface

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416301A (en) * 1967-01-31 1968-12-17 Maremont Corp Spinning ring with indented surface
JPS5242180Y1 (fr) * 1969-08-18 1977-09-24
JPS546655B1 (fr) * 1969-09-05 1979-03-30
JPH02182926A (ja) * 1988-12-29 1990-07-17 Kanai Hiroyuki 紡機用リング
JPH04327223A (ja) * 1991-04-26 1992-11-16 Kanai Hiroyuki 紡機用リング
JPH04135976U (ja) * 1991-05-30 1992-12-17 金井 宏之 紡機用給油リング
JPH04135977U (ja) * 1991-05-30 1992-12-17 金井 宏之 紡機用給油リング

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002510755A (ja) 1998-04-02 2002-04-09 ブレッカー アクチェンゲゼルシャフト リング精紡機およびリングねん糸機のためのリング
WO2004035255A1 (fr) 2002-09-27 2004-04-29 Nec Machinery Corporation Procede de formation d'une structure cyclique et procede de traitement de surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2933362A1 (fr) * 2014-04-16 2015-10-21 Kabushiki Kaisha Toyota Jidoshokki Système anneau-curseur de machine à filer à anneaux
EP3009542A1 (fr) * 2014-10-15 2016-04-20 Kabushiki Kaisha Toyota Jidoshokki Dispositif à anneau et curseur pour métier à filer à anneau

Also Published As

Publication number Publication date
CN103526357A (zh) 2014-01-22
JP2014029045A (ja) 2014-02-13
EP2682508A3 (fr) 2015-05-27
JP5910569B2 (ja) 2016-04-27
EP2682508B1 (fr) 2016-07-13
CN103526357B (zh) 2016-08-10

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