EP2682507B1 - 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
EP2682507B1
EP2682507B1 EP13173524.3A EP13173524A EP2682507B1 EP 2682507 B1 EP2682507 B1 EP 2682507B1 EP 13173524 A EP13173524 A EP 13173524A EP 2682507 B1 EP2682507 B1 EP 2682507B1
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EP
European Patent Office
Prior art keywords
ring
traveler
microcracks
friction reduction
recesses
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
EP13173524.3A
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German (de)
English (en)
Other versions
EP2682507A2 (fr
EP2682507A3 (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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Publication date
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Publication of EP2682507A3 publication Critical patent/EP2682507A3/fr
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Publication of EP2682507B1 publication Critical patent/EP2682507B1/fr
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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/04—Tubes; Rings; Hollow bodies
    • 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 such as a spinning frame and a twisting frame that twists a yarn using a ring and a traveler.
  • the invention also relates to a ring and a traveler.
  • Japanese Laid-Open Patent Publication JP 8-27633 describes a ring-traveler system having a longer durability and higher productivity.
  • the ring that comes into contact with the traveler includes a polycrystalline ceramic surface.
  • the ceramic surface of the ring has a surface structure including spherical grains. Gaps between the spherical grains provide a storage volume for a spontaneously formed fiber lubrication thin film.
  • the traveler is formed from a resilient material such as metal and has a metal and/or ceramic surface.
  • the metal and/or ceramic surface has a hardness that is greater than or equal to the hardness of the ceramic surface of the ring.
  • the ring-traveler system of the publication uses gaps between spherical grains as the storage space for a fiber lubrication thin film.
  • the fiber lubrication thin film has insufficient adhesive force. This may result in separation of the thin film during operation and thereby increase the traveling resistance of the traveler.
  • JP S58 203126 A discloses a sintered ring for a spinning machine.
  • the sintered ring comprises pores in the surface thereof to facilitate entering of oil into the sintered ring.
  • GB 705 579 A discloses traveler rings for textile spinning.
  • the traveler rings comprise a layer of hard chromium.
  • EP 1 719 827 A1 discloses a composite chromium plating film containing hard particles in network-shaped microcracks, the microcracks having a surface-occupying ratio of 10 to 20% by area and a distribution density of 1,200 to 2,500/cm. Hard particles are embedded in the microcracks in an amount of 1 to 15% by mass per the entire plating film, so that closing of microcracks by sliding stress can be prevented, and penetration of a lubricating oil into microcracks is enhanced.
  • a ring shall be provided, and a traveler shall be provided.
  • FIG. 1A to 4B 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 hard chromium plating layer 13 is applied to the flange 11 a as shown in Figs. 1B and 1C .
  • the hard chromium plating layer 13 has a thickness of about 10 to 20 ⁇ m.
  • the plating layer 13 includes a surface portion on which the traveler 12 slides when the traveler 12 travels.
  • the surface portion defines a friction reduction portion 14.
  • the friction reduction portion 14 is formed in the inner circumference surface of the flange 11 a as shown in Fig. 1C .
  • the friction reduction portion 14 includes 400 or more grooves 15 per centimeter.
  • the grooves 15 are also referred to as recesses.
  • the grooves 15 are microcracks formed in a surface of the hard chromium plating layer 13.
  • microcracks are cracks that are formed with a density of 250 or more cracks per centimeter.
  • the microcracks of the present embodiment include not only the microcracks that are originally present when the hard chromium plating layer 13 is formed, but also additional microcracks formed through a surface treatment (electrolytic etching in this embodiment).
  • the microcracks have different lengths and extend in random directions.
  • the number of microcracks is obtained by drawing a straight line on a micrograph of the surface of the hard chromium plating layer 13 and counting the number of cracks intersecting a centimeter-long portion of the straight line.
  • the cracks include cracks that are shaped like dimples and do not elongate like grooves. Since the microcracks vary in length and orientation, the straight line can be drawn at any position in the micrograph.
  • the present embodiment uses electrolytic etching as a surface treatment.
  • a known electrolytic etching process may be performed.
  • the number of microcracks increases in accordance with the electrolytic etching time.
  • the microcracks are not clearly visible on the surface of the hard chromium plating layer 13 before performing electrolytic etching. After electrolytic etching, many microcracks become visible.
  • 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 normal spinning operation is about 25,000 rpm.
  • the yarn Y applied 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 11 includes the friction reduction portion 14 in the surface portion on which the traveler 12 slides when the traveler 12 travels.
  • the friction reduction portion 14 includes 400 or more grooves 15 per centimeter.
  • the grooves 15 are microcracks formed in the surface of the hard chromium plating layer 13. The abundance of microcracks facilitates the formation of the film, which is formed by cellulose fibers that are separated from the yarn Y and adhere to the grooves 15.
  • the fiber film produces a friction reduction effect without using liquid lubrication.
  • the ring-traveler system improves the friction reduction effect as compared to a conventional system, and the friction reduction effect continues for a long time.
  • a ring 11 was prepared that includes a friction reduction portion 14 having 700 microcracks per centimeter.
  • a ring 11 was prepared that includes a friction reduction portion 14 having 1,000 microcracks per centimeter.
  • a conventional ring was used as a comparative example.
  • a spinning test was conducted to determine the relationship between traveling resistance and traveling distance without performing any preconditioning operation. The spinning was performed at the rotation speed of 20,000 rpm. The traveling resistance was obtained by rotatably supporting the ring and measuring the drag force applied to the ring by the traveler. Fig. 3 shows the test results.
  • the rings 11 having 400 or more microcracks (grooves 15) per centimeter in the friction reduction portions 14 each had a lower traveling resistance than the conventional ring after a traveling distance of 800 km. This verified the effectiveness of the friction reduction portion 14.
  • the ring 11 having 700 microcracks per centimeter and the ring 11 having 1,000 microcracks per centimeter were operated until the traveling distance reached 54,000 km. The test showed that the each ring 11 at a traveling distance of 54,000 had a traveling resistance that was generally the same as that at a traveling distance of 2,000 km.
  • each ring of the present embodiment was confirmed to have a significantly high, continuous friction reduction effect compared to the conventional ring.
  • the traveling resistance of the conventional ring increased at a short traveling distance. This is assumed to be resulted from a cellulose layer that was formed unevenly and increased the resistance.
  • a ring 11 having 400 microcracks per centimeter in the friction reduction portion 14 was tested to determine the relationship between traveling distance and traveling resistance and confirmed to have a lower traveling resistance than the conventional ring.
  • the travelers 12 were checked for abrasion.
  • the traveler 12 used with the conventional 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 friction reduction portion 14 had an abrasion 20' that was smaller than the abrasion 20.
  • the second embodiment is the same as the first embodiment except for the structure of the friction reduction portion 14.
  • 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.
  • the second embodiment includes a friction reduction portion 14 having a periodic structure 16.
  • the periodic structure 16 includes submicron projections and depressions.
  • the grooves 15 of the present embodiment are grooves 15 of the periodic structure 16 having submicron projections and depressions.
  • the grooves 15 serve as recesses that form the friction reduction portion 14.
  • the grooves 15 do not vary in length or orientation.
  • the grooves 15 have a uniform length and extend in parallel to one another.
  • the periodic structure 16 of projections and depressions are formed by emitting an extremely-short pulse laser beam such as a femtosecond pulsed laser beam on a portion where the periodic structure 16 is to be formed. This forms submicron periodic structure relatively easily.
  • Fig. 6 shows the test results.
  • the test was conducted on a ring 11 having the periodic structure 16 in which projections and depressions extend parallel to the circumferential direction of the ring 11.
  • the traveler 12 was separated from the ring 11 when the traveling distance reached 10,400 km.
  • Fig. 6 shows the test results obtained before the traveling distance reached 10,200 km.
  • the graph of the Fig. 6 partially includes the test results of the first embodiment for reference.
  • the traveling resistance of the ring 11 including the periodic structure 16 in the friction reduction portion 14 became lower than the traveling resistance of the conventional ring at a short traveling distance. This verified the effectiveness of the friction reduction portion 14.
  • the traveling distance is relatively short, the ring 11 including the periodic structure 16 in the friction reduction portion 14 had a lower friction resistance than the rings 11 including microcracks in the friction reduction portion 14.
  • the second embodiment has the following advantage in addition to advantage (1) of the first embodiment.
  • the third embodiment is the same as the first embodiment except for the structure of the friction reduction portion 14. 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.
  • a solid lubrication coating layer 18 is applied to the friction reduction portion 14 of the hard chromium plating layer 13.
  • the friction reduction portion 14 includes a flat portion 19, and the solid lubrication coating layer 18 is required to be applied at least to the flat portion 19.
  • the solid lubrication coating layer 18 is applied to the surface of each groove 15 of the friction reduction portion 14 in addition to the flat portion 19.
  • the grooves 15 are microcracks.
  • the groove 15 is schematically illustrated to have a V-shaped cross-section.
  • the flat portion 19 is a non-crack portion that is free from microcracks.
  • the solid lubrication coating layer 18 is formed by immersing at least the friction reduction portion 14 of the ring 11 in a solution of solid lubrication (polytetrafluoroethylene) and then drying the ring 11.
  • the friction reduction portion 14 produces a friction reduction effect without using liquid lubrication.
  • the friction reduction effect is achieved by lubrication of the fiber film.
  • the fiber film is formed by cellulose fibers that are separated from the yarn Y during spinning and adhere to the grooves 15.
  • the friction reduction effect is low until the fiber film is stably formed after the ring-traveler system begins to operate.
  • the friction reduction portion 14 of the hard chromium plating layer 13 includes the solid lubrication coating layer 18 on the surface.
  • the solid lubrication coating layer 18 reduces the friction between sliding surfaces of the ring-traveler system before the fiber film is stably formed and serves as lubrication.
  • a ring 11 having microcracks as the friction reduction portion 14 and a ring 11 having the solid lubrication coating layer 18 on the hard chromium plating layer 13 including microcracks were prepared.
  • a conventional ring was used as a comparative example.
  • the relationship between traveling distance and traveling resistance was evaluated in a similar manner as the first embodiment.
  • Fig. 8 shows the test results.
  • the ring 11 with microcracks had a similar traveling resistance as the conventional ring when the traveling distance was about 300 km.
  • the ring 11 with microcracks and the solid lubrication coating layer 18, which is also referred to as the ring 11 with microcracks and lubrication had about half the traveling resistance of the conventional ring and the ring with microcracks from the early stage. This verified the friction reduction effect of the solid lubrication coating layer 18.
  • the traveling resistance of the ring 11 with microcracks and lubrication increased with the traveling distance. After a traveling distance of 1,500 km, the traveling resistance of the ring 11 with microcracks and lubrication remained at the same level as the ring 11 with microcracks. After 1,500 km, the ring 11 with microcracks and the ring 11 with microcracks and lubrication had traveling resistances that were about 4 to 5 gf (gram-force) lower than the traveling resistance of the conventional ring.
  • the test results showed that the solid lubrication coating layer 18 reduced the friction of sliding surfaces of the ring-traveler system until the fiber film was stably formed and served as lubrication. After the fiber film was stably formed, the fiber film served as lubrication that reduced the friction of sliding surfaces of the ring-traveler system.
  • Fig. 9A shows an abrasion of the traveler 12 that was used with the ring 11 having the friction reduction portion 14 with microcracks and lubrication.
  • Fig. 9B shows an abrasion of the traveler 12 that was used with the ring 11 having the friction reduction portion 14 with microcracks.
  • Fig. 9C shows an abrasion of the traveler 12 that was used with the conventional ring.
  • each traveler 12 that was used with the rings 11 having the friction reduction portion 14 had an abrasion 20' that was smaller than the abrasion 20.
  • the third embodiment has the following advantages in addition to advantages (1) to (3) of the first embodiment.
  • the friction reduction portion 14 may include as recesses both of the grooves 15 that are microcracks in the surface of the hard chromium plating layer 13 and the grooves 15 forming the periodic structure 16 of projections and depressions. This structure has both of the benefits of microcracks and the benefits of grooves 15 forming the periodic structure 16 of projections and depressions.
  • the grooves 15 do not have to extend in only one direction.
  • a set of grooves may extend in parallel in a first direction
  • another set of grooves may extend in parallel in a second direction.
  • the first direction may be parallel to the circumferential direction of the ring 11, and the second direction may be perpendicular or diagonal to the first direction.
  • the first direction may be diagonal to the circumferential direction of the ring 11, and the second direction may be diagonal to the first direction.
  • the grooves 15 extending diagonally to the circumferential direction of the ring 11 may be arranged at any angle relative to the circumferential direction.
  • the recesses are not limited to grooves 15.
  • the grooves 15 may be dimples 17 surrounded by a flat portion.
  • Dimples 17 are not required to have round openings as shown in Fig. 12A .
  • each dimple 17 may have an oval, elliptical, rectangular, tetragonal, or polygonal opening.
  • the dimples 17 having round openings may be formed by performing bead blasting. Further, the dimples 17 are not required to have a uniform shape or size and may vary in shape and size as shown in Fig. 12B .
  • the periodic structure 16 may be formed on the flange 11a without forming the hard chromium 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.
  • a method for forming the periodic structure 16 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 16.
  • an extremely-short pulse laser such as a femtosecond pulsed laser
  • any chemical or physical process such as micro-etching may be performed.
  • the solid lubrication coating layer 18 of the third embodiment which is applied to the hard chromium plating layer 13 including microcracks, is required to be applied at least to the flat portion 19.
  • the solid lubrication coating layer 18 does not have to be applied to surfaces of the grooves 15.
  • the solid lubrication coating layer 18 does not have to be evenly formed on the flat portion 19.
  • the solid lubrication coating layer 18 may vary in thickness.
  • the grooves 15 may be filled with lubrication. Sliding of the traveler will eventually peel the lubrication at least partially. Thus, even if the grooves 15 are filled with lubrication at an early stage, the grooves 15 later become capable of holding fibers.
  • a method for forming the solid lubrication coating layer 18 is not limited to the method described for the third embodiment. Other chemical or physical process may be performed.
  • 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 11 a as shown in Fig. 11C .
  • This structure requires a traveler 12 having a shape corresponding to the tilted flange 11 a.
  • the friction reduction portion 14 may be formed on the traveler 12 of the ring-traveler system instead of on the ring 11. However, the friction reduction portion 14 is preferably formed on the ring 11 since the friction reduction portion 14 on the traveler 12 has a significantly smaller area than the friction reduction portion 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)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (8)

  1. Système de curseur d'une machine à filer à anneaux, dans lequel le système de curseur est du type à lubrification non liquide, le système de curseur comprenant :
    un anneau (11) ; et
    un curseur (12) qui se déplace le long de l'anneau (11), le système de curseur étant caractérisé en ce que
    l'un parmi l'anneau (11) et le curseur (12) comprend 400 évidements (15) ou plus par centimètre dans une partie de surface sur laquelle l'autre parmi l'anneau (11) et le curseur (12) coulisse lorsque le curseur (12) se déplace, de sorte qu'un film de fibres qui est formé par des fibres séparées d'un fil et saisies entre l'anneau (11) et le curseur (12), entre dans les évidements (15).
  2. Système de curseur selon la revendication 1, dans lequel
    l'un parmi l'anneau (11) et le curseur (12) comprend une couche de chromage dure (13), et
    les évidements (15) sont des microfissures (15) formées dans une surface de la couche de chromage dure (13).
  3. Système de curseur selon la revendication 2, dans lequel
    la couche de chromage dure (13) comprend une partie sans fissures (19) qui est dépourvue de microfissures (15), et
    une couche de revêtement de lubrification solide (18) est formée au moins sur la partie de microfissures (19).
  4. Système de curseur selon la revendication 1, dans lequel
    les évidements (15) sont des rainures (15) formant une structure périodique (16) de saillies et d'enfoncements.
  5. Système de curseur selon la revendication 1, dans lequel
    l'un parmi l'anneau (11) et le curseur (12) comprend une couche de chromage dure (13), et
    les évidements (15) comprennent des microfissures (15) formées dans une surface de la couche de chromage dure (13) et des rainures (15) formant une structure périodique (16) de saillies et d'enfoncements.
  6. Système de curseur selon la revendication 5, dans lequel
    la couche de chromage dure (13) comprend une partie sans fissures (19) qui est dépourvue de microfissures (15), et
    une couche de revêtement de lubrification solide (18) est formée au moins sur la partie sans fissures (19).
  7. Anneau (11) d'une machine à filer à anneaux, l'anneau (11) comprenant une partie de surface sur laquelle un curseur (12) coulisse lorsque le curseur (12) se déplace, l'anneau (11) étant caractérisé en ce que
    la partie de surface comprend 400 évidements (15) ou plus par centimètre, de sorte qu'un film de fibres, qui est formé par des fibres séparées d'un fil et saisies entre l'anneau (11) et le curseur (12), entre dans les évidements (15).
  8. Curseur (12) d'une machine à filer à anneaux, le curseur (12) comprenant une partie de surface sur laquelle un anneau (11) coulisse lorsque le curseur (12) se déplace, le curseur (12) étant caractérisé en ce que
    la partie de surface comprend 400 évidements (15) ou plus par centimètre, de sorte qu'un film de fibres, qui est formé par des fibres séparées d'un fil et saisies entre l'anneau (11) et le curseur (12), entre dans les évidements (15).
EP13173524.3A 2012-07-04 2013-06-25 Système de curseur de machine à filer à anneaux Active EP2682507B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012150493 2012-07-04
JP2013094012A JP5994721B2 (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
EP2682507A2 EP2682507A2 (fr) 2014-01-08
EP2682507A3 EP2682507A3 (fr) 2015-05-27
EP2682507B1 true EP2682507B1 (fr) 2016-09-21

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EP13173524.3A Active EP2682507B1 (fr) 2012-07-04 2013-06-25 Système de curseur de machine à filer à anneaux

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EP (1) EP2682507B1 (fr)
JP (1) JP5994721B2 (fr)
CN (1) CN103526358B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6027998B2 (ja) * 2014-04-16 2016-11-16 株式会社豊田自動織機 リング式紡機の液潤滑の無いリング／トラベラ系
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
CN107043972A (zh) * 2017-06-19 2017-08-15 德州富华生态科技有限公司 一种防落纱断头复合平面钢领
JP6814725B2 (ja) * 2017-12-22 2021-01-20 株式会社豊田中央研究所 精紡機用リング
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
JP7162459B2 (ja) * 2018-07-23 2022-10-28 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
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

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Publication number Priority date Publication date Assignee Title
GB705579A (en) * 1949-08-24 1954-03-17 Rieter Joh Jacob & Cie Ag Improvements in or relating to the manufacture of traveller rings for textile spinning and twisting-frames
US3416301A (en) * 1967-01-31 1968-12-17 Maremont Corp Spinning ring with indented surface
JPS5242180Y1 (fr) * 1969-08-18 1977-09-24
JPS5242180A (en) * 1975-09-30 1977-04-01 Yokogawa Hokushin Electric Corp Method and appartus for dividing of liuid sample
JPS6036490B2 (ja) * 1982-05-21 1985-08-21 金井 宏之 紡機用焼結リング及びその製造方法
JPH05125625A (ja) * 1991-10-31 1993-05-21 Kanai Hiroyuki 紡機用リング
DE4342148A1 (de) 1993-12-10 1995-06-14 Cerasiv Gmbh Ring-/Läufersystem für Spinn- und Zwirnmaschinen
JP4059621B2 (ja) * 2000-09-29 2008-03-12 日本ピストンリング株式会社 クロムめっき摺動部材及びその製造方法
US7318963B2 (en) * 2004-01-30 2008-01-15 Kabushiki Kaisha Riken Composite chromium plating film and sliding member having the same and method for manufacture thereof

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Publication number Publication date
JP2014029046A (ja) 2014-02-13
CN103526358A (zh) 2014-01-22
EP2682507A2 (fr) 2014-01-08
EP2682507A3 (fr) 2015-05-27
JP5994721B2 (ja) 2016-09-21
CN103526358B (zh) 2016-08-10

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