EP3325701B1 - Arrangement for feeding weft yarn - Google Patents
Arrangement for feeding weft yarn Download PDFInfo
- Publication number
- EP3325701B1 EP3325701B1 EP16794207.7A EP16794207A EP3325701B1 EP 3325701 B1 EP3325701 B1 EP 3325701B1 EP 16794207 A EP16794207 A EP 16794207A EP 3325701 B1 EP3325701 B1 EP 3325701B1
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- EP
- European Patent Office
- Prior art keywords
- yarn
- weft
- jet loom
- unit
- arrangement according
- Prior art date
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- 239000012530 fluid Substances 0.000 claims description 34
- 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
- 238000004804 winding Methods 0.000 description 1
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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 WO-2013/010278 A1 .
- an "intrinsic" yarn characteristic is understood to be such a yarn characteristic which is given by the build-up or the structure of the yarn itself.
- Examples of intrinsic yarn characteristics are the mass per length unit, diameter, density, surface structure, hairiness, material composition, presence of foreign matter, etc.
- an extrinsic characteristic would be such a yarn characteristic which depends on the external influences or reference systems.
- Examples of 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.
- Creels with sensors for extrinsic yarn characteristics are known from the prior art.
- JP-2006-193313 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 A1 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 yarn 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 yarn unwound from the creel.
- the yarn sensors for measuring intrinsic yarn 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 yarn 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 yarn 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 yarn 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-yarn section.
- An arrangement for feeding weft yarn along several yarn paths to a jet loom comprises a weft creel having several cone holders and several yarn 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 of 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 insertable 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. Also, 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 of the several weft yarn paths is provided with at least one yarn sensor unit stationarily mounted on the creel.
- the sensor With the fixed position of the yarn sensor unit with regard to the cone and the subsequent yarn brake unit each individual yarn path through the sensor is defined more precisely.
- the sensor may be placed more closely to the yarn brake unit. Oscillations of the weft yarn from the ideal yarn path are reduced and the flow of the yarn through the sensor unit gets smoother, which increases the measurement precision of the sensor unit.
- Figure 1 schematically shows an arrangement for feeding weft yarn 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', 21" can hold a cone 20 of weft yarn 10.
- the weft yarn 10 from each cone 20 follows an individual yarn 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 yarn path is further provided with one yarn 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 31 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.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Description
- 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 , andWO-2013/010278 A1 . - An "intrinsic" yarn characteristic is understood to be such a yarn characteristic which is given by the build-up or the structure of the yarn itself. Examples of intrinsic yarn characteristics are the mass per length unit, diameter, density, surface structure, hairiness, material composition, presence of foreign matter, etc. In contrast, an extrinsic characteristic would be such a yarn characteristic which depends on the external influences or reference systems. Examples of 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.
- Creels with sensors for extrinsic yarn characteristics are known from the prior art.
JP-2006-193313 A DE-43'12'823 A1 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 yarn balloons.GB-1'516'356 A JP-2004-156187 A - The yarn sensors for measuring intrinsic yarn 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 yarn 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 yarn is conveyed by the fluid flow through the fluid feed conduit. As proposed inWO-2012/068698 A2 , 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 yarn 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-yarn section. - It is an object of the present invention to provide an arrangement for feeding a weft yarn along several yarn paths to a jet loom, with which the energy and fluid consumption of the jet loom is reduced and the productivity of the jet loom is increased.
- These and other objects are achieved by the arrangement in accordance with the invention, as defined in the independent claim. Advantageous embodiments are disclosed in the dependent claims.
- An arrangement for feeding weft yarn along several yarn paths to a jet loom, according to the invention, comprises a weft creel having several cone holders and several yarn 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.
- In some embodiments, 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 of 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.
- In some embodiments, 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.
- In some embodiments, 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.
- In some embodiments, the fluid feed control unit of the jet loom is arranged on the creel and is connected to the plurality of yarn sensor units.
- In some embodiments, the arrangement further comprises at least one weft yarn storage unit, from which the weft yarn is insertable 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. Also, 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.
- Preferably 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. 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 determined at least one intrinsic characteristic of the respectively conveyed weft yarn section.
- 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. Depending on the number of cone holders or cone holder pairs on a weft creel several weft yarn paths are defined. Each of the several weft yarn paths is provided with at least one yarn sensor unit stationarily mounted on the creel. With the fixed position of the yarn sensor unit with regard to the cone and the subsequent yarn brake unit each individual yarn path through the sensor is defined more precisely. Also, the sensor may be placed more closely to the yarn brake unit. Oscillations of the weft yarn from the ideal yarn path are reduced and the flow of the yarn through the sensor unit gets smoother, which increases the measurement precision of the sensor unit. Experiments have shown that even a small increase of measurement precision results in better controlling of the jet loom, which leads to a considerable decrease of energy and fluid consumption. As the conveyance of the weft yarn by the fluid flow through the fluid feed conduit depends on several intrinsic yarn parameters, more precise measurement of these intrinsic yarn characteristics thus allowed a better adaptation of the jet-loom control to the individual characteristics of the weft-yarn section to be inserted.
- A preferred embodiment of the invention will be explained below with reference to the drawings.
- Figure 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 storage unit; and - Figure 4
- shows a detail view the arrangement of
Figure 2 . -
Figure 1 schematically shows an arrangement for feedingweft yarn 10 along a weft yarn path to a jet loom (not shown). The arrangement mainly comprises acreel 1 havingseveral cone holders cone holder cone 20 ofweft yarn 10. Theweft yarn 10 from eachcone 20 follows an individual yarn path within the arrangement. Thecreel 1 further comprises severalyarn brake units cone holder yarn sensor unit yarn brake unit creel 1. Thecreel 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 ofFigure 1 . Instead of onecone holder 21 for each yarn path the arrangement ofFigure 2 is provided with a cone holder pair 21.1, 21.2 for faster changing of empty cones. Theyarn sensor units yarn brake units yarn sensor units cover 2 of thecreel 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 ofFig. 2 including ayarn storage unit 50, 50' for each yarn path. Theyarn storage units 50, 50' are mounted on a separate yarn storage unit stand 51 placed downstream of thecreel 1 and upstream of the jet loom. From theyarn storage unit 50, 50' the weft yarn is inserted into the jet loom. Ayarn guide 52, 52' is provided to each yarn path via ayarn guide arm 53. Theyarn guide 52, 52' may be placed close to an outlet of theyarn 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 thesensor unit 40, 40'. -
Figure 4 shows a detail view of ayarn brake unit 30 and ayarn sensor unit 40 of the arrangement ofFigure 2 . Theyarn brake unit 30 may be a standard yarn brake with blades having anoutlet orifice 31. Theoutlet 31 of the yarn brake unit and theinlet 41 of theyarn 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 thesensor path 43. In that way, measurement precision is considerably increased. - It is understood that the present invention is not limited to the embodiments as discussed above. The person skilled in the art will be able to derive further variants with knowledge of the invention which also belong to the subject matter of the present invention.
-
- 1
- Weft creel
- 2
- Cover with control units
- 10
- Weft yarn
- 20, 20', ...
- Cone
- 21, 21', ...
- Cone holder
- 21.1, 21.1', ..., 21.2, 21.2', ...
- Cone holder pair
- 30, 30', ...
- Yarn brake unit
- 31
- Outlet of yarn brake unit
- 40, 40', ...
- Yarn sensors unit
- 41
- Inlet of yarn sensor unit
- 42
- Outlet of yarn sensor unit
- 43
- Sensor path
- 50, 50', ...
- Weft yarn storage unit
- 51
- Weft yarn storage unit holder
- 52, 52', ...
- Yarn guide
- 53
- Yarn guide arm
Claims (12)
- An arrangement for feeding weft yarns (10) along several yarn paths to a jet loom, the arrangement comprising
a weft creel (1) having several cone holders (21, 21', ...) and several yarn brake units (30, 30', ...), wherein at least one of the several cone holders (21, 21', ...) and at least one of the several yarn brake units (30, 30', ...) are assigned to each yarn path, and
a yarn sensor unit (40, 40', ...) configured for determining at least one intrinsic characteristic of a weft yarn and being connected to a control unit for controlling a fluid feed of the jet loom,
characterized in that
a plurality of yarn sensor units (40, 40', ...) is provided,
at least one of the plurality of yarn sensor units (40, 40', ...) is assigned to each of the yarn paths, and
each of the plurality of yarn sensor units (40, 40', ...) is mounted stationarily on the weft creel (1). - The arrangement according to claim 1, wherein each of the plurality of yarn sensor units (40, 40', ...) 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.
- The arrangement according to any of the preceding claims, wherein each of the plurality of yarn sensor units (40, 40', ...) comprises at least one yarn sensor, preferably two yarn sensors, for measuring at least one, preferably two, intrinsic characteristics of the weft yarn (10).
- The arrangement according to any of the preceding claims, wherein the at least one yarn sensor unit (40, 40', ...) is arranged downstream of the at least one yarn brake unit (30, 30', ...), preferably within 3 to 10 centimeters.
- The arrangement according to any of the preceding claims, wherein a yarn outlet (31) of the yarn brake unit (30) and a yarn inlet (41) of the at least one yarn sensor unit (40) are offset such that the yarn path from the yarn brake unit (30) to the yarn sensor unit (40) is diverted from a straight line.
- The arrangement according to any of the preceding claims, wherein the fluid feed control unit of the jet loom is arranged on the creel (1) and is connected to the plurality of yarn sensor units (40, 40', ...).
- The arrangement according to any of the preceding claims, further comprising at least one weft yarn storage unit (50, 50', ...), from which the weft yarn (10) is insertable into the jet loom, wherein each yarn path is provided with one weft yarn storage unit (50, 50', ...) arranged downstream of the yarn sensor unit (40, 40', ...).
- The arrangement according to claim 7, wherein a yarn guide (51, 51', ...) is arranged between the at least one yarn sensor unit (40, 40', ...) and the at least one weft yarn storage unit (50, 50', ...).
- The arrangement according to any of the preceding claims, wherein the at least one yarn sensor unit (40, 40', ...) is designed as a measuring head of a yarn clearer.
- The arrangement according to any of the preceding claims, wherein a pair of cone holders (21.1, 21.1', ...; 21.2, 21.2', ...) is assigned to each yarn path.
- An apparatus for controlling a jet loom, which jet loom contains a plurality of relay nozzles arranged along a fluid feed conduit, the apparatus comprising
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,
characterized in that
upstream with respect to the fluid feed conduit an arrangement according to any of the preceding claims is provided with the plurality of yarn sensor units (40, 40', ...) for determining at least one intrinsic characteristic of the weft yarn (10), and
the fluid feed control unit is configured to actuate the relay nozzles based on the previously determined at least one intrinsic characteristic of the respectively conveyed weft yarn section. - A jet loom, preferably an air-jet loom or a water-jet loom, with an apparatus for controlling the jet loom,
characterized in that
the apparatus for controlling the jet loom is an apparatus according to claim 11.
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 EP3325701A1 (en) | 2018-05-30 |
EP3325701B1 true EP3325701B1 (en) | 2020-04-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16794207.7A Active EP3325701B1 (en) | 2015-11-09 | 2016-10-28 | Arrangement for feeding weft yarn |
Country Status (5)
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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 |
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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
Non-Patent Citations (1)
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Also Published As
Publication number | Publication date |
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CN108138396A (en) | 2018-06-08 |
JP2018536773A (en) | 2018-12-13 |
CN108138396B (en) | 2020-03-20 |
BR112017027772A2 (en) | 2018-09-11 |
EP3325701A1 (en) | 2018-05-30 |
JP6940822B2 (en) | 2021-09-29 |
WO2017079851A1 (en) | 2017-05-18 |
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