EP3325701A1 - Arrangement for feeding weft yarn - Google Patents
Arrangement for feeding weft yarnInfo
- Publication number
- EP3325701A1 EP3325701A1 EP16794207.7A EP16794207A EP3325701A1 EP 3325701 A1 EP3325701 A1 EP 3325701A1 EP 16794207 A EP16794207 A EP 16794207A EP 3325701 A1 EP3325701 A1 EP 3325701A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- weft
- yam
- jet loom
- unit
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 206010020112 Hirsutism Diseases 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000004329 water eliminated fourier transform Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3026—Air supply systems
- D03D47/3033—Controlling the air supply
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
- D03D47/347—Yarn brakes
Definitions
- the present invention relates to an arrangement for feeding a weft yarn along several yarn paths to a jet loom, according to the preamble of the independent claim.
- Arrangements for feeding weft yarn typically comprise a creel with several cone holders or cone holder pairs for carrying weft yarn cones.
- the weft yarn is unwound from the cone and directed through a yarn brake unit to a weft yarn storage unit, from where it is inserted into a jet loom.
- Yarn sensors for measuring at least one intrinsic yarn parameter are used in looms in order to monitor or measure the weft thread to be inserted. Examples are provided by the following specifications: WO-2012/068697 A2, WO-2012/068698 A2, and
- an "intrinsic" yarn characteristic is understood to be such a yarn characteristic which is given by the build-up or the structure o the yarn itself.
- Examples of intrinsic yarn characteristics are the mass per length unit, diameter, density, surface structure, hairiness, material composition, presence o foreign matter, etc.
- an extrinsic yarn characteristic is understood to be such a yarn characteristic which is given by the build-up or the structure o the yarn itself. Examples of intrinsic yarn characteristics are the mass per length unit, diameter, density, surface structure, hairiness, material composition, presence o foreign matter, etc.
- an extrinsic yarn characteristic is understood to be such a yarn characteristic which is given by the build-up or the structure o the yarn itself. Examples of intrinsic yarn characteristics are the mass per length unit, diameter, density, surface structure, hairiness, material composition, presence o foreign matter, etc.
- an extrinsic yarn characteristic is understood to be such a yarn characteristic which is given by the build-up or the structure o the yarn itself. Examples of intrinsic yarn characteristics are the mass per length
- extrinsic yarn characteristics would be such a yarn characteristic which depends on the external influences or reference systems.
- extrinsic yarn characteristics are a yarn velocity or acceleration relative to a certain reference system, a position of a yarn tip in a certain reference system, or a mechanical yarn tension dependent on an external tensile force.
- JP-2006- 1933 13 A discloses a creel with a thread-break sensor for each cone holder supporting a cone. The sensors are connected to a central processing unit monitoring thread break of the entire creel.
- DE-43 " 12 * 823 Al also discloses a creel with a thread-break sensor.
- EP-1 '245 * 705 A2 discloses a method to optimize the yarn take-off speed from a creel. For this purpose, the creel is equipped with a yarn balloon sensor registering the size of the yam balloons.
- GB-1 '516'356 A discloses a speed sensor arranged between the creel and the loom.
- JP-2004- 156187 A discloses a length-measurement sensor for determining the length of the yam unwound from the creel.
- the yam sensors for measuring intrinsic yam parameters can be used to control a jet loom, in order to optimize the energy and fluid consumption of the jet loom, as disclosed in WO-2012/068698 A2.
- a jet loom contains a plurality of relay nozzles arranged along a fluid feed conduit.
- a weft yam is introduced into the fluid feed conduit.
- the relay nozzles are actuated so as to eject time-staggered fluid pulses which produce a fluid flow in the fluid feed conduit.
- the weft yam is conveyed by the fluid flow through the fluid feed conduit.
- at least two different individual, intrinsic characteristics of a weft-yarn section to be introduced into the fluid feed conduit are determined via the yarn sensors.
- These sensors are arranged on a separate stand between a creel and the weft yam storage unit of a jet loom.
- the relay nozzles are actuated based on the previously determined at least two different individual, intrinsic characteristics of the respectively conveyed weft-yam section.
- An arrangement for feeding weft yam along several yam paths to a jet loom comprises a weft creel having several cone holders and several yam brake units, wherein at least one of the several cone holders and at least one of the several yarn brake units are assigned to each yarn path.
- the arrangement further comprises a yarn sensor unit configured for determining at least one intrinsic characteristic of a weft yarn and for being connected to a control unit for controlling a fluid feed of the jet loom.
- a plurality of yarn sensor units is provided. At least one of the plurality of yarn sensor units is assigned to each of the yarn paths, and each of the plurality of yarn sensor units is mounted stationarily on the weft creel.
- each of the plurality of yarn sensor units is configured to measure at least one intrinsic characteristic of the weft yarn chosen from the following group: yarn mass per length unit, yarn diameter, yarn density, yarn-surface structure, yarn hairiness, yarn material.
- Each of the plurality o yarn sensor units may comprise at least one yarn sensor, preferably two yarn sensors, for measuring at least one, preferably two, intrinsic characteristic of the weft yarn.
- the at least one yarn sensor unit is arranged downstream of the at least one yarn brake unit, preferably within 3 to 10 centimeters. With such a close positioning of the two units the amplitude of possible oscillations of the weft yarn can be reduced leading to increased measurement precision.
- a yarn outlet of the yarn brake unit and a yarn inlet of the at least one yarn sensor unit are offset such that the yarn path from the yarn brake unit to the yarn sensor unit is diverted from a straight line and the yarn runs over an edge of the inlet. Oscillations of the weft yarn out of the ideal yarn path through the sensor (sensor path), which originate from unwinding the yarn, may be further reduced, leading to increased measurement precision.
- the fluid feed control unit of the jet loom is arranged on the creel and is connected to the plurality of yarn sensor units.
- the arrangement further comprises at least one weft yarn storage unit, from which the weft yarn is inscrtable into the jet loom, wherein each yarn path is provided with one weft yarn storage unit arranged downstream of the yarn sensor unit.
- a yarn guide may be arranged between the at least one yarn sensor unit and the at least one weft yarn storage unit, in order to more precisely define the yarn path between an outlet of the sensor unit and the waft yarn storage unit.
- the yarn guide may be placed close the outlet of the sensor unit and may be offset to define a diversion of the yarn path from a straight line, leading to a smoother passage of the yarn through the sensor unit.
- the at least one yarn sensor unit can be designed as a yarn- clearer measuring head. Such yarn-clearer measuring heads are well known from the prior art. They are usually mounted on spinning or winding machines for monitoring the yarn quality.
- a pair of cone holders is assigned to each yarn path.
- the invention also relates to an apparatus for controlling a jet loom, which jet loom contains a plurality of relay nozzles arranged along a fluid feed conduit.
- the apparatus comprises a fluid feed control unit for actuating the relay nozzles so as to eject time- staggered fluid pulses which generate a fluid flow in the fluid feed conduit, by means of which a weft yarn is conveyable through the fluid feed conduit.
- a fluid feed control unit for actuating the relay nozzles so as to eject time- staggered fluid pulses which generate a fluid flow in the fluid feed conduit, by means of which a weft yarn is conveyable through the fluid feed conduit.
- Upstream with respect to the fluid feed conduit an arrangement for feeding weft yarn along at least one yarn path to a jet loom as described above is provided.
- the arrangement has a plurality of yarn sensor units for determining at least one intrinsic characteristic of the weft yarn.
- the fluid feed control unit is configured to actuate the relay nozzles based on the previously
- the invention also relates to a jet loom, preferably an air-jet loom or a water-jet loom, with an apparatus for controlling the jet loom as described above.
- the invention thus proposes an arrangement including yarn sensor units measuring at least one intrinsic characteristic of a weft yarn section.
- yarn sensor units measuring at least one intrinsic characteristic of a weft yarn section.
- several weft yarn paths are defined.
- Each f the several weft yarn paths is provided with at least one yarn sensor unit stationarily mounted on the creel.
- each individual yarn path through the sensor is defined more precisely.
- the sensor may be placed more closely to the yarn brake unit.
- FIG. 1 schematically shows an arrangement in accordance with the invention
- Figure 2 shows a perspective view of an arrangement in accordance with the invention
- Figure 3 shows a perspective view of the arrangement of Figure 2 including a yarn
- Figure 4 shows a detail view the arrangement of Figure 2.
- Figure 1 schematically shows an arrangement for feeding weft yam 10 along a weft yarn path to a jet loom (not shown).
- the arrangement mainly comprises a creel 1 having several cone holders 21, 21 ', 21 ".
- Each cone holder 21 , 21 " , 2 ⁇ * can hold a cone 20 of weft yam 10.
- the weft yarn 10 from each cone 20 follows an individual yam path within the arrangement.
- the creel 1 further comprises several yarn brake units 30, 30 ' , 30", wherein one yarn brake unit is provided to each yarn path downstream of the cone holder 21 , 21 ", 21 ".
- Each yam path is further provided with one yam sensor unit 40, 40', 40 " arranged downstream of the yarn brake unit 30, 30', 30" and also stationarily mounted onto the creel 1.
- the creel 1 shown has four of these setups with cone holder, yarn brake unit and yarn sensor unit, wherein each setup defines a yarn path.
- the yarn sensor unit may be a yarn sensor unit with two yarn sensors to measure two different intrinsic characteristics of a weft yarn section, such as yarn mass per length unit, yarn diameter, yarn density, yarn- surface structure, yarn hairiness, yarn material.
- Figure 2 shows a perspective view of an embodiment of the schematic arrangement of Figure 1.
- the arrangement of Figure 2 is provided with a cone holder pair 21.1 , 21.2 for faster changing of empty cones.
- the yarn sensor units 40, 40 " , 40” are mounted directly downstream of and as close as possible to the yarn brake units 30, 30 " , 30 “ “ in order to minimize possible oscillations of the weft yarn out of the ideal yarn path.
- the yarn sensor units 40, 40 “ , 40 “ “” may be mounted on a hollow pole, in which the cables of the sensors may be guided to a cover 2 of the creel 1 accommodating electronics and control units for the sensors. These are further connectable to a fluid feed control unit of the jet loom.
- Figure 3 shows a perspective view of the arrangement of Fig. 2 including a yarn storage unit 50, 50 " for each yarn path.
- the yarn storage units 50, 50' are mounted on a separate yarn storage unit stand 51 placed downstream of the creel 1 and upstream of the jet loom. From the yarn storage unit 50, 50 " the weft yarn is inserted into the jet loom.
- a yarn guide 52, 52 " is provided to each yarn path via a yarn guide arm 53.
- the yarn guide 52, 52 * may be placed close to an outlet of the yarn sensor unit 40, 40 " and may define a diversion of the yarn path from the straight line through the sensor unit, leading to a smoother passage the yarn through the sensor unit 40, 40 ' .
- Figure 4 shows a detail view of a yarn brake unit 30 and a yarn sensor unit 40 of the arrangement of Figure 2.
- the yarn brake unit 30 may be a standard yarn brake with blades having an outlet orifice 31.
- the outlet 3 1 of the yarn brake unit and the inlet 41 of the yarn sensor unit 40 are arranged within a few centimeters, preferably 3 to 10 centimeters, and slightly offset such that the weft yarn is diverted from a straight path. Oscillations of the weft yarn originating from unwinding the yarn from the cone, although already reduced by the yarn brake unit, are further reduced such that the weft yarn follows a smooth straight line through the sensor path 43. In that way, measurement precision is considerably increased.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH16292015 | 2015-11-09 | ||
PCT/CH2016/000139 WO2017079851A1 (en) | 2015-11-09 | 2016-10-28 | Arrangement for feeding weft yarn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3325701A1 true EP3325701A1 (en) | 2018-05-30 |
EP3325701B1 EP3325701B1 (en) | 2020-04-15 |
Family
ID=54695416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16794207.7A Active EP3325701B1 (en) | 2015-11-09 | 2016-10-28 | Arrangement for feeding weft yarn |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3325701B1 (en) |
JP (1) | JP6940822B2 (en) |
CN (1) | CN108138396B (en) |
BR (1) | BR112017027772A2 (en) |
WO (1) | WO2017079851A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115161855B (en) * | 2017-08-08 | 2024-07-05 | 范德威尔瑞典公司 | Adjustable yarn brake |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010908A (en) | 1974-07-29 | 1977-03-08 | Owens-Corning Fiberglas Corporation | Method and apparatus for handling linear elements |
JPH0571042A (en) * | 1991-09-03 | 1993-03-23 | Nissan Motor Co Ltd | Yarn feeder for loom |
CH683993A5 (en) | 1992-04-24 | 1994-06-30 | Benninger Ag Maschf | A method and apparatus for cleaning the yarn monitor devices or Fadenbrems- or thread clamping devices on a creel. |
JPH05330742A (en) * | 1992-06-01 | 1993-12-14 | Tsudakoma Corp | Storage method of yarn feeder, textile factory and yarn feeder carrier device |
DE10103892A1 (en) | 2001-01-30 | 2002-08-08 | Sucker Mueller Hacoba Gmbh | To control the yarn take-off speed at a creel, for a warping beam, the dimensions of the yarn balloon at the bobbins are monitored for adjustment by altering the take-off speed to give higher speeds without increased yarn breaks |
JP2004156187A (en) | 2002-11-08 | 2004-06-03 | Murata Mach Ltd | Method for warping warp yarn |
JP2006193313A (en) | 2005-01-17 | 2006-07-27 | Tsudakoma Corp | Method for setting thread break detector in creel device, thread break detection method, and thread break detector in creel device |
BRPI0618400A2 (en) * | 2005-10-11 | 2011-08-30 | Invista Tech Sarl | methods for positioning and loading at least one new spare package in a warp mandrel, equipment for unwinding an elastomeric fiber in a package, and method for controlling elastomeric yarn tension in a yarn |
JP2007113140A (en) * | 2005-10-20 | 2007-05-10 | Nisshin Denim Kk | Rapier loom |
EP2157218A1 (en) * | 2008-08-18 | 2010-02-24 | ITEMA (Switzerland) Ltd. | Method and device for operating a loom |
EP2643509B1 (en) | 2010-11-25 | 2016-05-11 | Uster Technologies AG | A method and apparatus for controlling a jet loom |
JP5901031B2 (en) * | 2010-11-25 | 2016-04-06 | ウステル・テヒノロジーズ・アクチエンゲゼルシヤフト | Method and apparatus for controlling a jet loom |
BR112014000920A2 (en) | 2011-07-15 | 2017-02-14 | Toyota Ind Corp | assigned wire sensor loom and method for operating it |
EP2924156B1 (en) * | 2014-03-28 | 2016-11-23 | L.G.L. Electronics S.p.A. | Yarn-braking device for storage yarn feeders |
-
2016
- 2016-10-28 JP JP2018513376A patent/JP6940822B2/en active Active
- 2016-10-28 EP EP16794207.7A patent/EP3325701B1/en active Active
- 2016-10-28 CN CN201680055908.XA patent/CN108138396B/en active Active
- 2016-10-28 WO PCT/CH2016/000139 patent/WO2017079851A1/en active Application Filing
- 2016-10-28 BR BR112017027772A patent/BR112017027772A2/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CN108138396A (en) | 2018-06-08 |
JP2018536773A (en) | 2018-12-13 |
CN108138396B (en) | 2020-03-20 |
BR112017027772A2 (en) | 2018-09-11 |
JP6940822B2 (en) | 2021-09-29 |
WO2017079851A1 (en) | 2017-05-18 |
EP3325701B1 (en) | 2020-04-15 |
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