EP2933362B1 - Ring-läufer-system für eine ringspinnmaschine - Google Patents

Ring-läufer-system für eine ringspinnmaschine Download PDF

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Publication number
EP2933362B1
EP2933362B1 EP15161587.9A EP15161587A EP2933362B1 EP 2933362 B1 EP2933362 B1 EP 2933362B1 EP 15161587 A EP15161587 A EP 15161587A EP 2933362 B1 EP2933362 B1 EP 2933362B1
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EP
European Patent Office
Prior art keywords
ring
traveler
recess
deposit
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.)
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Application number
EP15161587.9A
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English (en)
French (fr)
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EP2933362A1 (de
Inventor
Naomichi Tominaga
Tsutomu Nakano
Hiroyuki Mori
Shintaro Igarashi
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 of EP2933362A1 publication Critical patent/EP2933362A1/de
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    • 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

Definitions

  • the present invention relates to a ring-traveler system for a ring spinning machine, and in particular, to a ring-traveler system for a ring spinning machine without liquid lubrication.
  • Japanese Laid-Open Patent Publication JP 2014-29045 A (see family member EP 2 682 508 A2 ) and Japanese Laid-Open Patent Publication JP 2014-29046 A disclose a ring-traveler system of a ring spinning machine, which improves a friction reduction effect and keeps the friction reduction effect longer without using liquid lubrication as compared to conventional articles.
  • a concave portion having a depth of 0.1 to 20 ⁇ m and a planar portion having a width of 1 to 250 ⁇ m are alternately formed on a sliding surface of a ring on which a traveler slides when the traveler travels.
  • the "ring spinning machine” refers to a ring spinning machine, a ring twisting machine, or the like that includes a ring supported by a ring rail to rise and fall and a traveler sliding on the ring, and winds a yarn via the traveler.
  • the "concave portion” includes a groove, and a recess surrounded by a plane. According to this configuration, when the traveler slides, air around the concave portion brings a wedge effect, and a friction reduction effect is obtained. Moreover, since the traveler slides on the planar portion, there is no wear of the concave portion.
  • Japanese Laid-Open Patent Publication JP 2014-29045 A describes that preferably, the concave portion is a circular recess, the diameter of the recess is 5 to 50 ⁇ m, the depth of the recess is 1 to 10 ⁇ m, and the distance between the adjacent recesses is 10 to 100 ⁇ m.
  • the document describes that when the concave portion is the circular recess, and the diameter and the depth of the recess, and the distance between the adjacent recesses fall in the above-mentioned ranges, a good friction reduction effect in addition to the wedge effect is obtained because wear powders and other foreign substances are discharged from the sliding interface between the ring and the traveler.
  • Japanese Laid-Open Patent Publication JP 2014-29046 A 400 or more concave portions per centimeter are formed on a sliding surface of a ring on which a traveler slides when the traveler travels.
  • Japanese Laid-Open Patent Publication JP 2014-29046 A describes that since a fiber film enters the concave portions on the sliding surface of the ring-traveler system to improve the adhesive force of the film and to prevent the fiber film from peeling off, the friction reduction effect caused by lubrication of the fiber film maintains reduced traveling resistance of the traveler.
  • Japanese Laid-Open Patent Publication JP 2014-29045 A discloses the relationship between the traveling distance of the traveler of less than 9000 km and the traveling resistance, and describes that the traveling resistance in the example is smaller than that of the commercial article, and the friction reduction effect is sustained.
  • the traveling resistance increases and replacement of the traveler becomes necessary.
  • Japanese Laid-Open Patent Publication JP 2014-29046 A discloses that micro-cracks formed on a surface of a hard chromium plating layer are used as concave portions.
  • the formation of the micro-cracks brings about the possibility of negatively affecting the durability of the hard chromium plating layer.
  • the document discloses that grooves or recesses processed on the surface of the ring or the traveler are used as concave portions.
  • the area of a planar portion where no groove or recess is formed becomes extremely small.
  • JPH04-135977 discloses a ring-traveler system with liquid lubrication for a ring spinning machine, in which a plurality of circular recesses is formed on a sliding surface of a ring on which a traveler slides when the traveler travels, wherein in the ring-traveler system a depth of the recess is 1 to 3 ⁇ m, a diameter of the recess is 10 to 100 ⁇ m, and an area ratio of the recess is 10 to 35%.
  • the depth of the recess is 0.5 to 8 ⁇ m.
  • the diameter of the recess is 5 to 30 ⁇ m.
  • the area ratio of the recess is 5 to 16%.
  • "Circular” is not limited to a perfect circle, and may be an ellipse having an ellipticity of 0.8 or more.
  • the "area ratio” is a value represented by a percentage of the area of all the recesses in the area of the entire sliding surface of the ring on which the traveler slides.
  • a ring 11 constituting the ring-traveler system includes a flange 11a having a T-shaped cross section, and a traveler 12 is formed having a C-shaped cross section.
  • the ring 11 is formed of a bearing steel.
  • a plating layer 13 is formed on a surface of the flange 11a.
  • the plating layer 13 is formed by being plated with chromium.
  • the plating layer 13 has a thickness of about 10 to 20 ⁇ m.
  • the plating layer 13 is a sliding surface of the ring 11 on which the traveler 12 slides when the traveler 12 travels.
  • a surface texture having a periodic structure 14 is formed on the plating layer 13 on an inner peripheral surface of the flange 11a.
  • the periodic structure 14 is configured by arranging circular recesses 15 at predetermined intervals.
  • the depth of each recess 15 is 0.5 to 8 ⁇ m, preferably, 1 to 5 ⁇ m, more preferably, 2 to 4 ⁇ m.
  • the diameter of the recess 15 is 5 to 30 ⁇ m, preferably, 8 to 25 ⁇ m, more preferably, 10 to 20 ⁇ m.
  • the area ratio of the recesses 15 is 5 to 16%.
  • the area ratio is a value represented by a percentage of the area of all the recesses 15 in the area of the entire sliding surface of the ring 11 on which the traveler 12 slides.
  • the recesses 15 are formed, for example, by irradiating locations where the recesses 15 of the ring 11 are to be formed with a femtosecond pulsed laser or a high-power nano-pulsed laser.
  • a yarn Y is sent out from a draft part not illustrated, and then is wound around a high-speed rotating bobbin not illustrated through the traveler 12.
  • the maximum rotating speed of a spindle in the normal spinning operation of the ring spinning machine is about 25000 rpm.
  • the traveler 12 travels on the flange 11a by the winding tension of the yarn Y.
  • the traveling posture of the traveler 12 slightly varies depending on the rotating speed.
  • the traveler 12 travels on the ring 11 while abutting on an inner lower portion of the flange 11a.
  • the surface texture having the periodic structure 14 is formed on the sliding surface of the ring 11 on which the traveler 12 slides when the traveler 12 travels.
  • the periodic structure 14 is formed such that the recesses 15 satisfy predetermined conditions. This decreases the traveling resistance of the traveler 12, because a yarn component deposit is formed in the recesses 15 when the traveler 12 slides.
  • the recesses 15 satisfy the requirement that the area ratio is 5 to 16%.
  • the surface texture of the ring 11 causes yarn component-derived carbon to be formed as a thin deposit 16 on the entire sliding surface.
  • the thin deposit 16 is formed on the entire sliding surface and then, acts as a lubricating film. Since this prevents metal-to metal contact between the ring 11 and the traveler 12, wear of the traveler 12 reduces. As a result, since the friction reduction effect is sustained long, the traveler 12 becomes difficult to wear.
  • Fig. 3A and Fig. 3B exaggeratedly illustrate irregularity of the sliding surface of the ring 11 on which the traveler 12 slides.
  • the deposit 16 is formed on only a portion of the sliding surface, and the deposit 16 becomes thick.
  • the metal-to metal contact between the ring 11 and the traveler 12 occurs on a portion where no deposit is formed.
  • the friction increases and the wear of the traveler 12 advances. Therefore, the friction reduction effect is not sustained longer as compared to the case where yarn component-derived carbon is formed as the thin deposit 16 on the entire sliding surface.
  • the bearing steel ring 11 formed by plating the surface of the flange 11a with Cr was used. Moreover, a surface texture having the periodic structure 14 was formed on the sliding surface of the ring 11 on which the traveler 12 slides.
  • the surface texture was formed on the ring 11 by using a high-power nano-pulsed laser (HIPPO 355-5W manufactured by Spectra-Physics KK., with a laser having a wavelength of 335 nm).
  • HIPPO 355-5W manufactured by Spectra-Physics KK.
  • pulse energy was set to 86 uJ
  • pulse time was set to 12 ns.
  • the ring was fixed to a jig in air, the rotating speed was set to 50°/sec, and the ring was rotated 25 times.
  • the diameter and the depth of each hole of the surface texture formed by the laser irradiation were 20 ⁇ m and 2 ⁇ m, respectively.
  • the surface texture was formed at intervals of 70 ⁇ m in the ring circumferential direction and at intervals of 60 ⁇ m in the axial direction.
  • the processing time per ring was about 160 seconds.
  • Various textures were formed by changing other laser irradiation conditions than the above. An example of the conditions is shown in Table 1.
  • the number of the holes per centimeter was 111 to 125. (Table 1) Diameter ( ⁇ m) Area Ratio (%) Depth ( ⁇ m) Sample 1 10 1.6 2 Sample 2 10 8.7 2 Sample 3 20 6.4 4 Sample 4 20 12.6 4
  • Sample 1 is a conventional article disclosed in Japanese Laid-Open Patent Publication No. 2014-29045 .
  • Sample 2 to Sample 4 are articles according to the present invention.
  • a ring-traveler system using the ring 11 having the surface texture formed thereon (hereinafter may also be referred to as a surface textured article) and a ring-traveler system using a commercial ring having no surface texture formed thereon were constituted. Then, a spinning test was performed until the traveling distance reached 25000 km, and the relationship between the traveling resistance and the traveling distance was examined. The spinning test was performed by increasing the rpm in stages from 15000 to 21000 rpm until the traveling distance of the traveler 12 reached 1400 km, and by keeping high-speed rotation of 22000 rpm after the traveling distance reached 1600 km. Concerning the traveling resistance, a co-rotating force applied from the traveler 12 to the ring 11 was measured using a load cell in the state where the ring 11 was rotationally supported.
  • Fig. 4 illustrates the results of the relationship between the traveling resistance and the traveling distance.
  • the traveling resistance of the ring 11 having the surface texture with the periodic structure 14 formed thereon is smaller than the traveling resistance of the commercial ring.
  • the traveling resistance of Sample 1 (conventional article) that is the ring 11 having the surface texture but does not satisfy the configuration requirement that the area ratio is 5 to 16% according to the present invention increased to 18[gf] to 19[gf] when the traveling distance reached 17000 km.
  • the spinning test was continued until the traveling distance of the traveler 12 reached 25000 km. Then, wear of the traveler 12 was evaluated at a time point when the traveling distance reached 25000 km. Moreover, sliding surfaces of the surface textured article and the commercial ring after spinning and cross sections near the sliding surfaces were observed using a scanning electron microscope (SEM). Moreover, carbon on the sliding surfaces was analyzed using an electron probe microanalyzer (EPMA).
  • SEM scanning electron microscope
  • EPMA electron probe microanalyzer
  • Fig. 5A and Fig. 5B are schematic views illustrating analysis results of the EPMA.
  • Fig. 5A illustrates the analysis results of the sliding surface of the surface textured article according to the present invention
  • Fig. 5B illustrates the analysis results of the sliding surface of the ring having no surface texture formed thereon.
  • portions where dots are present represent locations where the deposit 16 has adhered. As the number of the dots per unit area is larger, the deposit 16 is thicker.
  • the thin carbon deposit 16 present on the entire sliding surface was detected, and the thick and highly-concentrated deposit 16 present on the portions of the recesses 15 was detected.
  • the deposit 16 adhered to only a portion of the sliding surface, and the deposit 16 was thicker in many portions than the deposit 16 in the article according to the present invention.
  • the deposit 16 is considered to have been formed by wear powders of the yarn Y that are generated by sliding of the traveler 12 and the yarn Y and enter the sliding surface of the ring 11 on which the traveler 12 slides.
  • a main component of the yarn is cellulose.
  • an organic component-derived fluorescent component was analyzed using the EPMA.
  • the deposit was analyzed by Raman analysis.
  • an amorphous carbon component-derived spectrum was detected on the sliding surface that is glossier than the recesses 15.
  • the amorphous carbon component-derived component also contributes to the lubricating ability and wear is reduced.
  • Fig. 6A illustrates the deposit 16 formed on the sliding surface of the surface textured article
  • Fig. 6B illustrates the deposit 16 formed on the sliding surface having no surface texture formed thereon.
  • the deposit 16 illustrated in Fig. 6B is thicker than the deposit 16 illustrated in Fig. 6A .
  • the thickness of the deposit 16 formed on the sliding surface of the surface textured article was about submicron, that is, less than 1 ⁇ m.
  • the thickness of the deposit 16 on the sliding surface having no surface texture formed thereon was for example, about 2 ⁇ m.
  • Wear of the traveler 12 having slid on the surface textured article was evaluated.
  • the minimum thickness that remains after the spinning test was used.
  • the initial thickness of the traveler 12 was used as a reference value.
  • a wear level at which the traveler has no wear was defined as wear level 1.
  • a wear level at which the traveler wore to have the thickness half or more of the initial thickness of the traveler 12 was defined as wear level 2.
  • a wear level at which the traveler wore to have the thickness less than a half of the initial thickness of the traveler was defined as wear level 3.
  • wear levels 4 and 5 were defined, respectively. These stages are stages where the spinning performance of the yarn decreases and the replacement of the traveler 12 is necessary.
  • Fig. 7 illustrates the evaluation results.
  • An unprocessed article having no texture formed thereon was used as a comparative article.
  • the wear level in the unprocessed article was about 4.
  • the results of the best wear level of 1.5 to 2 and less wear were obtained.
  • Even in the surface textured article when the area ratio was 2%, that is, the area ratio did not satisfy the requirement of 5 to 16%, the wear level was 3.
  • the wear level was 3 or more. Therefore, it was confirmed that the diameter of the hole is preferably 8 to 30 ⁇ m. It was also confirmed that the area ratio is also important and is preferably 5 to 16%.
  • the present embodiment may be embodied as follows.
  • the recesses 15 of different sizes may be present.
  • the recesses 15 of different depths may be present.
  • the recesses 15 of different sizes and the recesses 15 of different depths may be present.
  • the periodic structure 14 is not limited to the configuration where the recesses 15 are arranged on the entire sliding surface at regular intervals in a staggered or lattice-like manner.
  • the recesses may be arranged in a partially different manner or in a random manner.
  • the periodic structure 14 may be formed on the flange 11a without forming the plating layer 13. However, when the material of the ring 11 is a material currently used in the commercial article, it is preferable to form the plating layer 13.
  • the ring 11 constituting the ring-traveler system is not limited to the configuration of including the flange 11a having a T-shaped cross section, and may include an inclined flange 11a. In this case, a traveler of a shape corresponding to the inclined flange is used as the traveler 12.
  • an extremely-short pulsed laser such as a femtosecond pulsed laser, a high-power picosecond pulsed laser, or a nanosecond pulsed laser
  • other well-known methods may be applied.
  • the periodic structure 14 may be formed on the traveler 12 in place of the ring 11 of the ring-traveler system.
  • the area of the periodic structure 14 becomes much smaller than when the periodic structure is formed on the ring 11. For this reason, it is preferable to form the periodic structure 14 on the traveler 12.
  • the spinning yarn is not limited to cotton, and may be linen, silk, wool, chemical fiber (nitrocellulose, nylon, vinylon). Among them, cotton and linen are preferable in the point that cotton and linen discharge wear powders most and it is easy to form the deposit 16 on the sliding surface of the ring on which the traveler slides.
  • a circular recess is formed on a sliding surface of a ring on which a traveler slides when the traveler travels.
  • the depth of the recess is 0.5 to 8 ⁇ m
  • the diameter of the recess is 5 to 30 ⁇ m
  • the area ratio of the recess is 5 to 16%.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (3)

  1. Ring-Läufer-System ohne Flüssigkeitsschmierung für eine Ringspinnmaschine, bei dem eine Vielzahl an kreisartigen Vertiefungen (15) an einer Gleitfläche eines Rings (11) ausgebildet ist, an dem ein Läufer (12) gleitet, wenn der Läufer (12) läuft, wobei in dem Ring-Läufer-System
    eine Tiefe der Vertiefung (15) 0,5 bis 8 µm beträgt,
    ein Durchmesser der Vertiefung (15) 5 bis 30 µm beträgt, und
    ein Flächenverhältnis der Vertiefung (15) 5 bis 16 % beträgt, wobei das Flächenverhältnis ein Wert ist, der repräsentiert wird durch einen prozentualen Anteil der Fläche von sämtlichen kreisartigen Vertiefungen (15) in dem Bereich der gesamten Gleitfläche des Rings (11), an dem der Läufer (12) gleitet, und
    eine periodische Struktur (14) aufgebaut ist durch Anordnen der kreisartigen Vertiefungen (15) unter vorbestimmten Intervallen.
  2. Ring-Läufer-System ohne Flüssigkeitsschmierung der Ringspinnmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass der Durchmesser der Vertiefung (15) 8 bis 25 µm beträgt.
  3. Ring-Läufer-System ohne Flüssigkeitsschmierung der Ringspinnmaschine gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Tiefe der Vertiefung (15) 1 bis 5 µm beträgt.
EP15161587.9A 2014-04-16 2015-03-30 Ring-läufer-system für eine ringspinnmaschine Active EP2933362B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014084872A JP6027998B2 (ja) 2014-04-16 2014-04-16 リング式紡機の液潤滑の無いリング／トラベラ系

Publications (2)

Publication Number Publication Date
EP2933362A1 EP2933362A1 (de) 2015-10-21
EP2933362B1 true EP2933362B1 (de) 2018-11-21

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JP (1) JP6027998B2 (de)
CN (1) CN105002611B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN113423882B (zh) * 2018-12-18 2023-03-10 N·帕塔萨拉蒂 钢领纺纱机的钢领钢丝圈系统
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04135977U (ja) * 1991-05-30 1992-12-17 金井 宏之 紡機用給油リング

Family Cites Families (8)

* 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
US5175988A (en) * 1988-06-23 1993-01-05 Kanai Juyo Kogyo Company Ltd. Ring for spinning machinery
DE59200965D1 (de) * 1991-08-13 1995-01-26 Braecker Ag Ringläufer für einen Schrägflanschring.
DE102011053661A1 (de) * 2011-09-16 2013-03-21 Deutsche Institute Für Textil- Und Faserforschung Denkendorf Fadenführungsring für eine Spinnmaschine oder eine Zwirnmaschine
CN102443893A (zh) * 2011-09-22 2012-05-09 吴江秦邦纺织有限公司 一种具有自润性能钢丝圈的制备工艺
JP5910569B2 (ja) * 2012-07-04 2016-04-27 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
JP5994721B2 (ja) 2012-07-04 2016-09-21 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
CN103710799B (zh) * 2012-10-09 2016-06-08 昆山立特纳米电子科技有限公司 自润滑涂层钢领及其制备工艺

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04135977U (ja) * 1991-05-30 1992-12-17 金井 宏之 紡機用給油リング

Also Published As

Publication number Publication date
JP6027998B2 (ja) 2016-11-16
CN105002611B (zh) 2017-06-06
EP2933362A1 (de) 2015-10-21
CN105002611A (zh) 2015-10-28
JP2015203175A (ja) 2015-11-16

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