EP3269851A1 - Métier a filer - Google Patents
Métier a filer Download PDFInfo
- Publication number
- EP3269851A1 EP3269851A1 EP17184907.8A EP17184907A EP3269851A1 EP 3269851 A1 EP3269851 A1 EP 3269851A1 EP 17184907 A EP17184907 A EP 17184907A EP 3269851 A1 EP3269851 A1 EP 3269851A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- tension
- unit
- predetermined range
- spinning machine
- 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
- 238000009987 spinning Methods 0.000 title claims abstract description 189
- 238000004804 winding Methods 0.000 claims abstract description 64
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims description 91
- 239000000463 material Substances 0.000 claims description 23
- 230000007423 decrease Effects 0.000 claims description 22
- 230000003247 decreasing effect Effects 0.000 claims description 14
- 238000004018 waxing Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 37
- 230000008859 change Effects 0.000 description 17
- 238000012806 monitoring device Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 9
- 239000013256 coordination polymer Substances 0.000 description 8
- 238000007378 ring spinning Methods 0.000 description 6
- 230000005856 abnormality Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000007480 spreading Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000007383 open-end spinning Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
- D02G3/367—Cored or coated yarns or threads using a drawing frame
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/10—Tension devices
- D01H13/108—Regulating tension by regulating speed of driving mechanisms of unwinding, paying-out, forwarding, winding or depositing devices, e.g. automatically in response to variations in tension
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/10—Tension devices
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
- D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
- D01H13/20—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to excessive tension or irregular operation of apparatus
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/11—Spinning by false-twisting
- D01H1/115—Spinning by false-twisting using pneumatic means
Definitions
- the present disclosure relates to a spinning machine.
- the spinning machine described in Japanese Unexamined Patent Publication No. 2013-049932 is known as a conventional spinning machine.
- the spinning machine described in Japanese Unexamined Patent Publication No. 2013-049932 includes a spinning device generating yarn, a winding device winding yarn generated by the spinning device into a package, and a detecting unit detecting the tension of traveling yarn between the spinning device and the winding device.
- Tension of traveling yarn is one of factors affecting the quality of yarn, and appropriate control on the tension of yarn wound into a package by the winding device can thus improve the quality of the yarn.
- An embodiment of the present disclosure aims to provide a spinning machine enabling improvement of the quality of yarn.
- a spinning machine includes a yarn forming unit configured to form yarn from a spun material, a winding device configured to wind yarn formed by the yarn forming unit, a tension detecting unit configured to detect the tension of yarn in an upstream side from the winding device in a direction in which the yarn travels, and a control unit configured to control the yarn forming unit based on a result of detection by the tension detecting unit such that the yarn is wound onto the winding device with adjustment of the tension added to the spun material in the yarn forming unit.
- the control unit adjusts the tension by controlling a device of the yarn forming unit disposed at least in an upstream side or in a downstream side from a position at which the spun material is twisted in the direction in which the yarn travel.
- a spinning machine can maintain the tension of yarn within a predetermined range by providing feedback control to devices based on the tension of yarn detected by the tension detecting unit. With this configuration, the spinning machine can improve the quality of yarn.
- the yarn forming unit may include a drafting device configured to draft a fiber bundle used as a spun material.
- the drafting device may include a plurality of pairs of rollers including a pair of front rollers disposed in a most downstream position in a direction in which the fiber bundle is drafted.
- the control unit may control the circumferential speed of the pair of front rollers based on the result of detection by the tension detecting unit.
- the feed ratio of the fiber bundle changes with a change in the circumferential speed of the pair of front rollers of the drafting device.
- the change in the feed ratio can change the tension of the fiber bundle (the yarn) in the downstream side from the pair of front rollers. Consequently, in the spinning machine, effective control on the tension of yarn can be achieved by controlling the circumferential speed of the pair of front rollers based on a result of detection by the tension detecting unit.
- the control unit may provide control of decreasing the current circumferential speed of the pair of front rollers until the tension of the yarn increases to the predetermined range.
- the control unit may provide control of increasing the current circumferential speed of the pair of front rollers until the tension of the yarn decreases to the predetermined range.
- An increase in the circumferential speed can decrease the tension of yarn, whereas a decrease in the circumferential speed of the pair of front rollers can increase the tension of yarn.
- the control unit controls the circumferential speed of the pair of front rollers based on a result of detection so as to maintain the tension of the yarn within a predetermined range.
- the yarn forming unit includes a yarn storage roller disposed upstream of the winding device in a direction in which the yarn travels and configured to store the yarn.
- the control unit may control the number of rotations per unit time of the yarn storage roller based on a result of detection by the tension detecting unit such that the tension of the yarn detected by the tension detecting unit falls within a predetermined range.
- a change in the number of rotations per unit time of the yarn storage roller changes the feed ratio of the yarn.
- the change in the feed ratio can change the tension of the yarn stored in the yarn storage roller.
- the tension of yarn is effectively controlled by controlling the number of rotations of the yarn storage roller based on a result of detection by the tension detecting unit.
- the control unit may provide control of increasing the current number of rotations of the yarn storage roller until the tension of the yarn increases to the predetermined range.
- the control unit may provide control of decreasing the current number of rotations of the yarn storage roller until the tension of the yarn decreases to the predetermined range.
- the spinning machine may include an air spinning device configured to generate the yarn by applying swirling airflow to a fiber bundle, and the yarn storage roller may store the yarn while drawing the yarn generated by the air spinning device.
- the yarn storage roller can control the tension of yarn generated by the air spinning device, and consequently, yarn is generated in the air spinning device at optimum tension, which can improve the quality of the yarn.
- a spinning machine includes a yarn forming unit including a core yarn supply device that includes a supporting unit configured to support a core yarn package with core yarn wound thereon and a tension adding unit configured to add tension to the core yarn unwound from the core yarn package, the yarn forming unit being configured to form yarn from a spun material including the core yarn, a winding device configured to wind the yarn formed by the yarn forming unit, a tension detecting unit configured to detect tension of the yarn in the upstream side from the winding device in a direction in which the yarn travels, and a control unit configured to control the tension adding unit based on a result of detection by the tension detecting unit such that the yarn is wound onto the winding device with adjustment of tension added to the spun material in the yarn forming unit.
- the spinning machine can maintain the tension of yarn within a predetermined range by providing feedback control to devices based on the tension of yarn detected by the tension detecting unit.
- the spinning machine in this configuration can improve the quality of yarn including core yarn.
- control unit may control the tension adding unit based on a result of detection by the tension detecting unit such that the tension of the yarn detected by the tension detecting unit falls within a predetermined range. This process can improve the quality of yarn wound by the winding device.
- the quality of yarn can be improved.
- a spinning machine 1 includes a plurality of spinning units 2, a splicing carrier 3, a doffing carrier (not illustrated), a first end frame 4, and a second end frame 5.
- the spinning units 2 are aligned in a row.
- Each spinning unit 2 generates yarn Y and winds the yarn into a package P.
- the splicing carrier 3 splices the yarn Y in the spinning unit 2.
- the doffing carrier doffs the package P and supplies a new bobbin B to the spinning unit 2.
- the first end frame 4 accommodates therein a collection device and the like for collecting fiber waste, yarn waste, and others generated in the spinning unit 2.
- the second end frame 5 accommodates therein an air supply unit adjusting air pressure of compressed air (air) supplied to the spinning machine 1 and supplying air to the units in the spinning machine 1, a driving motor for supplying power to the units in the spinning unit 2, and others.
- the second end frame 5 includes a machine control device 100, a display screen 102, and an input key 104.
- the machine control device 100 intensively manages and controls the units of the spinning machine 1.
- the display screen 102 can display, for example, information on the settings and/or the status of the spinning unit 2. An operator performs necessary operations through the input key 104, thereby setting the spinning unit 2.
- each spinning unit 2 includes, in the order from the upstream side in the direction in which the yarn Y travels, a drafting device 6, a core yarn supply device 7, an air spinning device 8, a yarn monitoring device 9, a tension sensor (a tension detecting unit) 10, a yarn storage device 11, a waxing device 12, and a winding device 13.
- the drafting device 6, the core yarn supply device 7, and a yarn storage roller 11a (described later) of the yarn storage device 11 constitute a yarn forming unit forming the yarn Y from a spun material while adjusting the tension of the spun material.
- the drafting device 6, the core yarn supply device 7, and the yarn storage roller 11a of the yarn storage device 11 are disposed in at least one of the upstream side and the downstream side from a position (the air spinning device 8) at which the spun yarn is twisted.
- a unit controller (the control unit) 15 is provided in every certain number of spinning units 2 and controls operations of the spinning units 2.
- the drafting device 6, the core yarn supply device 7, and the yarn storage device 11 in the spinning unit 2 are devices affecting the tension of the yarn Y.
- the drafting device 6 drafts a sliver (a fiber bundle, a spun material) S.
- the drafting device 6 includes, in the order from the upstream side in the direction in which the sliver S travels, a pair of back rollers 16, a pair of third rollers 17, a pair of middle rollers 18, and a pair of front rollers 19.
- the pair of front rollers 19 are disposed in the most downstream position in a direction of drafting.
- Each pair of rollers 16, 17, 18, and 19 includes a bottom roller and a top roller.
- the bottom roller is driven and rotated by a driving motor installed in the second end frame 5.
- the top roller of the pair of middle rollers 18 includes an apron belt 18a.
- the bottom roller of the pair of middle rollers 18 includes an apron belt 18b.
- the core yarn supply device 7 unwinds core yarn (a spun material) C from a core yarn package CP and supplies the core yarn C to the drafting device 6. Specifically, the core yarn supply device 7 supplies the core yarn C onto the traveling path of the fiber bundle F from between the pair of middle rollers 18 and the pair of front rollers 19, whereby the core yarn C is supplied to the air spinning device 8 together with the fiber bundle F.
- the air spinning device 8 generates the yarn Y by twisting the fiber bundle F drafted by the drafting device 6 using swirling airflow. More specifically (although not illustrated in the drawings), the air spinning device 8 includes a spinning room, a fiber guiding unit, a swirling airflow generating nozzle, and a hollow guide shaft.
- the fiber guiding unit guides the fiber bundle F supplied from the drafting device 6 disposed in the upstream side to the spinning room.
- the swirling airflow generating nozzle is disposed around a path on which the fiber bundle F travels. Swirling airflow is generated in the spinning room with the swirling airflow generating nozzle spraying air.
- the swirling airflow reverses and swirls the fiber tips of a plurality of fibers included in the fiber bundle F.
- the hollow guide shaft guides the yarn Y from the spinning room to the outside of the air spinning device 8.
- the yarn monitoring device 9 is disposed between the air spinning device 8 and the yarn storage device 11 and monitors information on traveling yarn Y. Specifically, the yarn monitoring device 9 detects whether the yarn Y has any defects based on the monitored information. Upon detection of a defect on the yarn, the yarn monitoring device 9 transmits a yarn defect detection signal to the unit controller 15. The yarn monitoring device 9 detects abnormality in the diameter of the yarn Y, a foreign matter contained in the yarn Y, and/or the like as a defect of the yarn Y. The yarn monitoring device 9 further detects yarn breakage and others.
- the tension sensor 10 disposed between the air spinning device 8 and the yarn storage device 11 measures the tension of traveling yarn Y and transmits a tension measuring signal (a result of detection) to the unit controller 15.
- the unit controller 15 determines that abnormality has occurred based on at least one of a result of detection by the yarn monitoring device 9 and a result of detection by the tension sensor 10, the yarn Y is cut in the spinning unit 2. Specifically, air supply to the air spinning device 8 stops, generation of the yarn Y is terminated, and the yarn Y is accordingly cut. In another way, the yarn Y may be cut with a cutter separately provided.
- the waxing device 12 disposed between the yarn storage device 11 and the winding device 13 applies wax to the yarn Y.
- the yarn storage device 11 disposed between the air spinning device 8 and the winding device 13 eliminates slack from the yarn Y.
- the yarn storage device 11 has functions of stably drawing the yarn Y from the air spinning device 8, preventing the yarn Y from slacking by retaining the yarn Y delivered from the air spinning device 8, for example, in the yarn splicing operation of the splicing carrier 3, and preventing fluctuations in the tension of the yarn Y situated downstream of the yarn storage device 11 from spreading to the air spinning device 8.
- the yarn storage device 11 includes the yarn storage roller 11a, a yarn threading member 11b, and a motor 11c.
- the yarn storage roller 11a stores the yarn Y with the yarn Y wound onto the outer peripheral surface of the yarn storage roller 11a.
- the yarn threading member 11b is disposed at the downstream end of the yarn storage roller 11a.
- the yarn threading member 11b hooks the yarn Y and winds the yarn onto the yarn storage roller 11a.
- the yarn threading member 11b adds tension to the yarn Y unwound from the yarn storage roller 11a.
- the motor 11c rotates the yarn storage roller 11a.
- a motor driver 11d controls driving of the motor 11c. Specifically, the motor driver 11d controls driving of the motor 11c based on a signal output from the unit controller 15.
- the winding device 13 winds the yarn Y onto the bobbin B and forms the package P.
- the winding device 13 includes a cradle arm 21, a winding drum 22, and a traverse guide 23.
- the cradle arm 21 rotatably supports the bobbin B.
- the cradle arm 21 is swingably supported by a supporting shaft 24 and has the surface of the bobbin B or the surface of the package P contact with the surface of the winding drum 22 at appropriate pressure.
- the driving motor (not illustrated) installed in the second end frame 5 simultaneously drives the winding drums 22 of a plurality of spinning units 2. With this drive, the bobbin B or the package P of each spinning unit 2 is rotated in a direction of winding.
- the traverse guide 23 of each spinning unit 2 is mounted on a shaft 25 shared by a plurality of spinning units 2. With the driving motor in the second end frame 5 driving the shaft 25 in a direction of the rotational axis of the winding drum 22 in a reciprocating manner, the traverse guide 23 has the yarn Y traverse a rotating bobbin B or package P at a certain width.
- the splicing carrier 3 When the yarn Y is cut or breaks in a spinning unit 2 for any reason, the splicing carrier 3 runs to the spinning unit 2 and performs a splicing operation.
- the splicing carrier 3 includes a splicing device 26, a suction pipe 27, and a suction mouth 28.
- the suction pipe 27 is rotatably supported by a support shaft 31.
- the suction pipe 27 catches the yarn Y sent from the air spinning device 8 and guides the yarn Y to the splicing device 26.
- the suction mouth 28 is rotatably supported by a support shaft 32.
- the suction mouth 28 catches the yarn Y sent from the winding device 13 and guides the yarn Y to the splicing device 26.
- the splicing device 26 splices the guided pieces of the yarn Y with each other. Examples of the splicing device 26 include a splicer using compressed air and a knotter mechanically splicing the yarn Y.
- the splicing carrier 3 rotates (reversely rotates) the package P in a reverse direction of winding. Specifically, the cradle arm 21 is moved by an air cylinder (not illustrated) so that the package P is separated from the winding drum 22, and a reverse rotating roller (not illustrated) installed to the splicing carrier 3 reversely rotates the package P.
- the core yarn supply device 7 includes a package supporting unit (a supporting unit) 50, a core yarn supply unit 51, and a core yarn guiding unit 52.
- the package supporting unit 50 supports the core yarn package CP with the center line of the core yarn package CP horizontally extending in the front-to-back direction.
- the core yarn package CP is formed with the core yarn C wound onto a core yarn bobbin CB.
- the core yarn C in this embodiment is, for example, multifilament yarn.
- the multifilament yarn is yarn formed by bundling a plurality of pieces of filament single yarn.
- the core yarn C is unwound from the core yarn package CP and is supplied to the core yarn supply unit 51 via a guide roller 53 guiding the core yarn C.
- the core yarn C may be another kind of yarn such as monofilament yarn and spun yarn.
- the core yarn supply unit 51 has functions of adding tension to supplied core yarn C, adding slack to the core yarn C, and delivering the core yarn C (an end of the core yarn C).
- the core yarn guiding unit 52 is a cylindrical member guiding the core yarn C to the drafting device 6.
- the core yarn supply unit 51 includes a unit base 60, a tension adding mechanism 70, a slack adding mechanism 80, a core yarn monitoring device 82, and a core yarn delivery mechanism 84.
- the core yarn package CP side is referred to as an upstream side
- the core yarn guiding unit 52 side is referred to as a downstream side.
- the unit base 60 supports, in the order from the upstream side in a direction in which the core yarn C is supplied, the tension adding mechanism 70, the slack adding mechanism 80, the core yarn monitoring device 82, and the core yarn delivery mechanism 84.
- a core yarn guide 61 guiding the core yarn C is disposed in the most upstream position on the unit base 60.
- the tension adding mechanism 70 adds tension to the core yarn C in the downstream side from the core yarn guide 61. As illustrated in FIGs. 5A and 5B , the tension adding mechanism 70 includes a tension adding unit 71 and a retaining unit 72.
- the tension adding unit 71 includes a fixed piece 73 and a movable piece 74. With the core yarn C alternately hooked to the fixed piece 73 and the movable piece 74, the core yarn C is bent a plurality of times in the tension adding unit 71.
- the number of bends of the core yarn C is, for example, 20 times or less (preferably, between twice and ten times, inclusively).
- the fixed piece 73 is fixed to the unit base 60.
- the movable piece 74 is supported by a support shaft (not illustrated) provided to the fixed piece 73 and openable and closable (rotatable) with respect to the fixed piece 73.
- the movable piece 74 is pressed toward a direction opening with respect to the fixed piece 73 by a spring (not illustrated) provided to the fixed piece 73.
- a plurality of shafts 73a are provided to the fixed piece 73 at certain intervals in a direction in which the core yarn C is supplied.
- a plurality of projections 74a projecting toward the fixed piece 73 are provided to the movable piece 74.
- the projections 74a are alternately positioned between the shafts 73a in the direction in which the core yarn C is supplied.
- Each projection 74a has a hole 74b through which the core yarn C passes at its leading end. The core yarn C is alternately hooked to the shafts 73a and the holes 74b.
- the core yarn C is bent a plurality of times when the movable piece 74 opens with respect to the fixed piece 73.
- tension is added to the core yarn C.
- higher tension is added to the core yarn C with the movable piece 74 opening with respect to the fixed piece 73 at a larger angle, and the state of the tension adding unit 71 under this condition is referred to as a tension added state.
- the core yarn C is substantially linear when the movable piece 74 closes with respect to the fixed piece 73.
- no tension is added to the core yarn C (or lower tension than the tension in the tension added state is added to the core yarn C).
- the state of the tension adding unit 71 under this condition is referred to as a no-tension added state.
- the retaining unit 72 opens and closes the movable piece 74 with respect to the fixed piece 73.
- the retaining unit 72 includes a retaining member 75 and an actuator 76.
- the unit controller 15 controls driving of the actuator 76.
- the actuator 76 has the retaining member 75 abut with or separated from the movable piece 74. More specifically, the retaining member 75 has a front end 75a abutting with the movable piece 74 from the opposite side of the fixed piece 73, and the position of the front end 75a is moved by the actuator 76.
- the slack adding mechanism 80 adds slack to the core yarn C in the downstream side from the tension adding mechanism 70. More specifically, the position of a front-end guiding unit of the slack adding mechanism 80 moves from a position including the traveling path (the continuous line in FIG. 4 ) of the core yarn C to another position (the position indicated by the double chain line in FIG. 4 ) away from the traveling path of the core yarn C before the core yarn delivery mechanism 84 starts delivering the core yarn C. This process adds slack to the core yarn C.
- the core yarn monitoring device 82 detects the presence of the core yarn C between the core yarn guide 61 and the core yarn delivery mechanism 84. In FIG.
- the core yarn monitoring device 82 is disposed downstream of the slack adding mechanism 80 in the direction in which the core yarn C is supplied.
- the core yarn monitoring device 82 may be disposed upstream of the tension adding mechanism 70.
- the core yarn delivery mechanism 84 is disposed downstream of the core yarn monitoring device 82 and delivers the core yarn C (an end of the core yarn C) to the drafting device 6 when the spinning operation starts.
- the tension sensor 10 measures the tension of traveling yarn Y and transmits a tension measuring signal to the unit controller 15.
- the unit controller 15 rotates the yarn storage roller 11a at the number of initial rotations set for each lot.
- the number of initial rotations is preset such that the tension of the yarn Y detected by the tension sensor 10 falls within a predetermined range.
- the "predetermined range” may be a range having a certain width or may be a value without a range.
- the unit controller 15 receives the tension measuring signal and determines whether the tension of the yarn Y indicated by the tension measuring signal falls within a predetermined range.
- the range for the tension of the yarn Y is input, for example, through the input key 104 of the machine control device 100 and set.
- the range for the tension of the yarn Y may be automatically set based on a set lot.
- the unit controller 15 determines that the tension of the yarn Y is out of the predetermined range, the unit controller 15 controls the number of rotations per unit time (hereinafter simply referred to as "the number of rotations") of the yarn storage roller 11a.
- the unit controller 15 controls the tension of the yarn Y by changing the number of rotations of the yarn storage roller 11a without changing the drafting speed (for example, the circumferential speed of the pair of front rollers 19) of the drafting device 6.
- the drafting operation by the drafting device 6, the spinning operation by the air spinning device 8, and the winding operation by the winding device 13 are continuing in parallel with the control.
- the unit controller 15 increases the number of rotations (rpm) of the yarn storage roller 11a from the number of initial rotations. More specifically, the unit controller 15 outputs a signal to the motor driver 11d and increases the number of rotations of the motor 11c. This process changes the feed ratio (the difference in the delivery speed of the yarn Y between the yarn storage roller 11a and the pair of front rollers 19) of the yarn Y determined based on the number of rotations of the yarn storage roller 11a and the circumferential speed of the pair of front rollers 19.
- the delivery speed of the yarn Y drawn from the air spinning device 8 by the yarn storage roller 11a becomes higher than the delivery speed of the yarn Y delivered from the pair of front rollers 19 to the air spinning device 8.
- the tension of the yarn Y increases with the change in the feed ratio.
- the unit controller 15 determines that the tension of the yarn Y has increased to the predetermined range based on the tension measuring signal, the unit controller 15 completes the control of increasing the number of rotations of the yarn storage roller 11a and controls the number of rotations of the yarn storage roller 11a so that the tension of the yarn Y is maintained within the predetermined range.
- the unit controller 15 decreases the number of rotations of the yarn storage roller 11a from the number of initial rotations. With this operation, the delivery speed of the yarn Y drawn from the air spinning device 8 by the yarn storage roller 11a becomes lower than the delivery speed of the yarn Y delivered from the pair of front rollers 19 to the air spinning device 8, which accordingly changes the feed ratio of the yarn Y. The tension of the yarn Y decreases with the change in the feed ratio.
- the unit controller 15 determines that the tension of the yarn Y has decreased to the predetermined range based on the tension measuring signal, the unit controller 15 completes the control of decreasing the number of rotations of the yarn storage roller 11a and controls the number of rotations of the yarn storage roller 11a so that the tension of the yarn Y is maintained within the predetermined range.
- the unit controller 15 determines that the tension of the yarn Y is out of the predetermined range and further determines that the tension of the yarn Y is at a value causing abnormality on the yarn Y (for example, the tension at the value is low enough to form a weak portion on the yarn Y), the unit controller 15 terminates the spinning operation instead of controlling the number of rotations of the yarn storage roller 11a.
- the tension sensor 10 measures the tension of traveling yarn Y and transmits a tension measuring signal to the unit controller 15.
- the unit controller 15 controls the actuator 76 such that the initial tension is added to the core yarn C by the tension adding mechanism 70.
- the initial tension is preset such that the tension of the yarn Y detected by the tension sensor 10 falls within a predetermined range.
- the unit controller 15 controls the actuator 76 so as to have the front end 75a positioned at the initial position. With this process, the initial tension is added to the core yarn C.
- the unit controller 15 receives the tension measuring signal and determines whether the tension of the yarn Y indicated by the tension measuring signal falls within a predetermined range. If the unit controller 15 determines that the tension of the yarn Y is out of the predetermined range, the unit controller 15 controls the tension added to the core yarn C by the tension adding mechanism 70. Specifically, if the tension of the yarn Y is below the predetermined range, the unit controller 15 controls the actuator 76 such that the front end 75a moves above the initial position and that the movable piece 74 opens with respect to the fixed piece 73. The tension added to the core yarn C increases with the move of the front end 75a.
- the unit controller 15 determines that the tension of the yarn Y has increased to the predetermined range based on the tension measuring signal, the unit controller 15 completes the control of increasing the tension added by the tension adding mechanism 70 and controls the tension adding mechanism 70 such that the tension of the yarn Y is maintained within the predetermined range.
- the unit controller 15 controls the actuator 76 such that the front end 75a moves below the initial position and that the movable piece 74 closes with respect to the fixed piece 73.
- the tension added to the core yarn C decreases with the move of the front end 75a.
- the unit controller 15 completes the control of decreasing the tension added by the tension adding mechanism 70 and controls the tension adding mechanism 70 such that the tension of the yarn Y is maintained within the predetermined range.
- the unit controller 15 determines that the tension of the yarn Y is out of the predetermined range and further determines that the tension of the yarn Y is at a value causing abnormality on the yarn Y, the unit controller 15 terminates the spinning operation instead of controlling the tension adding mechanism 70.
- the tension of the yarn Y may be controlled by controlling at least one of the yarn storage device 11 and the core yarn supply device 7.
- the tension of the yarn Y may be controlled by controlling the number of rotations of the yarn storage roller 11a or may be controlled by controlling the tension added to the core yarn C by the tension adding mechanism 70.
- the tension of the yarn Y may be controlled by controlling both the yarn storage roller 11a and the tension adding mechanism 70 of the core yarn supply device 7. In any of these cases, the drafting operation by the drafting device 6, the spinning operation by the air spinning device 8, and the winding operation by the winding device 13 are continuing in parallel with the control.
- the spinning machine 1 As described above, in the spinning machine 1 according to the embodiment, devices affecting the tension of the yarn Y are controlled based on a result of detection by the tension sensor 10 such that the tension of the yarn Y falls within a predetermined range.
- the spinning machine 1 can maintain the tension of the yarn Y within a predetermined range by providing feedback control to the devices based on the tension of the yarn Y detected by the tension sensor 10. The spinning machine 1 in this configuration can thus improve the quality of the yarn Y.
- the unit controller 15 controls the number of rotations of the yarn storage roller 11a based on the tension measuring signal transmitted from the tension sensor 10 such that the tension of the yarn Y detected by the tension sensor 10 falls within a predetermined range.
- a change in the number of rotations per unit time of the yarn storage roller 11a changes the feed ratio.
- the change in the feed ratio accordingly changes the tension of the yarn Y stored in the yarn storage roller 11a. Consequently, in the spinning machine 1, the tension of the yarn Y is effectively controlled by controlling the number of rotations of the yarn storage roller 11a based on the tension measuring signal transmitted from the tension sensor 10.
- the unit controller 15 increases the number of rotations per unit time of the yarn storage roller 11a until the tension of the yarn Y increases to the predetermined range.
- the unit controller 15 decreases the number of rotations per unit time of the yarn storage roller 11a until the tension of the yarn Y decreases to the predetermined range.
- the yarn storage roller 11a stores the yarn Y while drawing the yarn Y generated by the air spinning device 8, which means that no delivery rollers or nip rollers for drawing the yarn Y from the air spinning device 8 are disposed between the air spinning device 8 and the yarn storage roller 11a.
- This configuration enables control of the tension of the yarn Y generated by the air spinning device 8 using the yarn storage roller 11a. Consequently, the yarn Y is generated by the air spinning device 8 at optimum spinning tension, which can improve the quality of the yarn.
- the yarn Y may slip on the delivery roller. Slip of the yarn Y may result in instable control on the tension of the yarn Y.
- the yarn Y is drawn from the air spinning device 8 by the yarn storage roller 11a.
- the yarn storage roller 11a draws the yarn Y from the air spinning device 8 by winding the yarn Y onto the outer peripheral surface of the yarn storage roller 11a.
- the spinning machine 1 includes the core yarn supply device 7 having the package supporting unit 50 supporting the core yarn package CP with the core yarn C wound thereon and the tension adding mechanism 70 adding tension to the core yarn C unwound from the core yarn package CP.
- the unit controller 15 controls the tension sensor 10 based on the tension measuring signal transmitted from the tension sensor 10 such that the tension of the yarn Y detected in the tension adding mechanism 70 falls within a predetermined range. This configuration can improve the quality of the yarn Y wound by the winding device 13.
- a bottom roller of the pair of front rollers 19 (hereinafter may be referred to as a "front bottom roller” ) is driven and rotated by a driving motor 20 installed in each spinning unit 2.
- a motor driver 20a controls driving of the driving motor 20.
- the motor driver 20a controls driving of the driving motor 20 based on a signal output from the unit controller 15.
- the bottom roller of each pair of back rollers 16, third rollers 17, and middle rollers 18 may be driven and rotated by the driving motor installed in each spinning unit 2 or may be driven and rotated by a driving motor installed in the second end frame 5.
- the tension sensor 10 measures the tension of traveling yarn Y and transmits a tension measuring signal to the unit controller 15.
- the unit controller 15 rotates the pair of front rollers 19 of the drafting device 6 at the initial speed set for each lot.
- the initial speed is preset such that the tension of the yarn Y detected by the tension sensor 10 falls within a predetermined range.
- the unit controller 15 receives the tension measuring signal and determines whether the tension of the yarn Y indicated by the tension measuring signal falls within the predetermined range. If the unit controller 15 determines that the tension of the yarn Y is out of the predetermined range, the unit controller 15 controls the circumferential speed of the pair of front rollers 19 (the front bottom roller). In this embodiment, the unit controller 15 controls the tension of the yarn Y by changing the circumferential speed of the front bottom roller without changing the number of rotations of the yarn storage roller 11a.
- the drafting operation by the drafting device 6, the spinning operation by the air spinning device 8, and the winding operation by the winding device 13 are continuing in parallel with the control.
- the unit controller 15 decreases the circumferential speed of the pair of front rollers 19 from the initial speed. More specifically, the unit controller 15 outputs a signal to the motor driver 20a of the driving motor 20 and decreases the number of rotations (rpm) of the driving motor 20.
- This process changes the feed ratio of the yarn Y determined based on the number of rotations of the yarn storage roller 11a and the circumferential speed of the pair of front rollers 19. Specifically, the speed of the yarn Y delivered from the pair of front rollers 19 to the air spinning device 8 becomes lower than the speed of the yarn Y drawn from the air spinning device 8 by the yarn storage roller 11a, which changes the feed ratio of the yarn Y and accordingly increases the tension of the yarn Y.
- the unit controller 15 determines that the tension of the yarn Y has increased to the predetermined range based on the tension measuring signal, the unit controller 15 completes the control of decreasing the circumferential speed of the front bottom roller and controls the circumferential speed of the front bottom roller so that the tension of the yarn Y is maintained within the predetermined range.
- the unit controller 15 increases the circumferential speed of the pair of front rollers 19 from the initial speed. This operation makes the speed of the yarn Y delivered from the pair of front rollers 19 to the air spinning device 8 higher than the speed of the yarn Y drawn from the air spinning device 8 by the yarn storage roller 11a, which changes the feed ratio of the yarn Y. The tension of the yarn Y decreases with the change in the feed ratio.
- the unit controller 15 determines that the tension of the yarn Y has decreased to the predetermined range based on the tension measuring signal, the unit controller 15 completes the control of increasing the circumferential speed of the front bottom roller and controls the circumferential speed of the front bottom roller so that the tension of the yarn Y is maintained within the predetermined range.
- the circumferential speed of at least the pair of back rollers 16, the pair of third rollers 17, or the pair of middle rollers 18 may be controlled in addition to the control of the circumferential speed of the pair of front rollers 19.
- the unit controller 15 controls the circumferential speed of the pair of front rollers 19 based on the tension measuring signal transmitted from the tension sensor 10.
- the feed ratio changes with the change in the circumferential speed of the pair of front rollers 19 of the drafting device 6.
- the change in the feed ratio can change the tension of the fiber bundle F (the yarn Y) in the downstream side from the pair of front rollers 19. Consequently, the spinning machine 1 can effectively control the tension of the yarn Y by controlling the circumferential speed of the pair of front rollers 19 based on the tension measuring signal transmitted from the tension sensor 10.
- the unit controller 15 decreases the circumferential speed of the pair of front rollers 19 from the initial speed until the tension of the yarn Y increases to the predetermined range. If the tension of the yarn Y is detected beyond the predetermined range in the tension measuring signal, the unit controller 15 increases the circumferential speed of the pair of front rollers 19 from the initial speed until the tension of the yarn Y decreases to the predetermined range.
- the tension of the yarn Y can be decreased by increasing the circumferential speed of the pair of front rollers 19, whereas the tension of the yarn Y can be increased by decreasing the circumferential speed of the pair of front rollers 19.
- the unit controller 15 controls the circumferential speed of the pair of front rollers 19 based on the tension measuring signal and maintains the tension of the yarn Y within the predetermined range.
- the tension of the yarn Y may be controlled by controlling at least one of the drafting device 6, the core yarn supply device 7, and the yarn storage device 11. In another way, the tension of the yarn Y may be controlled by controlling both the pair of front rollers 19 of the drafting device 6 and the yarn storage device 11. In still another way, the tension of the yarn Y may be controlled by controlling both the pair of front rollers 19 of the drafting device 6 and the tension adding mechanism 70 of the core yarn supply device 7. Furthermore, the tension of the yarn Y may be controlled by controlling these three devices, which are the pair of front rollers 19 of the drafting device 6, the tension adding mechanism 70 of the core yarn supply device 7, and the yarn storage roller 11a of the yarn storage device 11.
- the feedback control based on a result of detection by the tension sensor 10 is provided in parallel with the winding operation of the package P. If the tension of the yarn Y detected by the tension sensor 10 does not fall within a predetermined range even with the feedback control over a certain period, the spinning operation and the winding operation in the spinning unit 2 may be stopped. In at least one of the drafting device 6, the yarn storage device 11, and the tension adding mechanism 70, a limited range may be set for the amount (such as the number of rotations of the pair of front rollers 19 and/or the yarn storage roller 11a and the amount of tension added by the tension adding mechanism 70) to be controlled in the feedback control.
- the spinning operation and the winding operation of the spinning unit 2 may be stopped.
- the display screen 102 and/or a display unit (not illustrated) installed to each spinning unit 2 may make a display informing that an error has been caused.
- the spinning unit 2 of the spinning machine 1 includes the core yarn supply device 7; however, the core yarn supply device 7 may not be installed to the spinning unit 2.
- the tension adding unit 71 of the tension adding mechanism 70 in the core yarn supply device 7 adds tension to the yarn Y by bending the core yarn C a plurality of times.
- the tension added to the core yarn C by the tension adding unit 71 may be adjusted by controlling the degree at which the movable piece 74 opens with respect to the fixed piece 73 by electrically adjusting the contact angle of a spring (not illustrated).
- the mechanism for adding tension to the core yarn C is not limited thereto.
- a yarn path of the core yarn C may be bent with a disk. Tension may be added to the core yarn C in any position in the upstream side from the core yarn guiding unit 52.
- the tension sensor 10 measures the tension of traveling yarn Y between the air spinning device 8 and the yarn storage device 11; however, the position of the tension sensor 10 is not limited thereto.
- the tension sensor 10 may measure the tension of the yarn Y at any position between the air spinning device 8 and the winding device 13.
- the unit controller 15 serves as a control unit controlling the yarn forming unit and the winding device 13 based on a result of detection by the tension sensor 10 such that the yarn Y is wound with adjustment of the tension added by the yarn forming unit.
- the machine control device 100 may serve as the control unit.
- the air spinning device 8 may further include a needle retained by the fiber guiding unit and projecting into the spinning room so as to prevent twist of the fiber bundle from spreading upstream of the air spinning device.
- the air spinning device may prevent twist of the fiber bundle from spreading upstream of the air spinning device using an end in the downstream side of the fiber guiding unit.
- the air spinning device may include a pair of air jet nozzles for twisting the fiber bundle in respective directions opposite to each other.
- the spinning machine may be an open-end spinning machine.
- the yarn storage device 11 has a function of drawing the yarn Y from the air spinning device 8; however, the yarn Y may be drawn from the air spinning device 8 by a delivery roller and a nip roller. In this case, the yarn storage device 11 can be omitted. Furthermore, a slack tube absorbing slack of the yarn Y with suction airflow, a mechanical compensator, or the like may replace the yarn storage device 11.
- the unit controller 15 controls the circumferential speed of the delivery roller when the unit controller 15 determines that the tension of the yarn Y is out of a predetermined range.
- the change in the circumferential speed of the delivery roller changes the feed ratio of the yarn Y.
- the change in the feed ratio can change the tension of the yarn Y drawn by the delivery roller. Consequently, in the spinning machine, the tension of the yarn Y is controlled by controlling the circumferential speed of the delivery roller based on a result of detection by the tension sensor 10.
- the devices in the spinning machine 1 are disposed in a manner that the yarn Y supplied in the upper side are wound in the lower side in the height direction.
- the devices may be disposed such that the yarn supplied in the lower side is wound in the upper side.
- the traverse guide 23 is driven by power from the second end frame 5 (in other words, driven by power shared by a plurality of spinning units 2).
- the devices such as the air spinning device and the winding device
- each spinning unit 2 may be driven on a per-spinning unit 2 basis.
- the tension sensor 10 may be disposed upstream of the yarn monitoring device 9 in a direction in which the yarn Y travels.
- the unit controller 15 may be provided in each spinning unit 2.
- the yarn monitoring device 9 and the waxing device 12 may be omitted from each spinning unit 2.
- FIG. 1 illustrates the spinning machine 1 winding the yarn into the package P in a cheese-like shape; however, the spinning machine 1 can wind yarn into a package in a corn-like shape.
- the spinning machine 1 including the air spinning device 8
- a ring spinning frame may be usable.
- the ring spinning frame is a spinning machine forming yarn from a fiber bundle (a spun material) and winds the yarn onto a spinning bobbin.
- a yarn forming unit in the ring spinning frame corresponds to the pair of front rollers of the drafting device and/or the tension adding unit of the core yarn supply device. If a ring spinning frame is used as a spinning machine, the ring spinning frame may include a core yarn supply device or may not include the same. If the ring spinning frame includes a core yarn supply device, a fiber bundle and/or core yarn are used as a spun material.
- a spinning machine includes a yarn forming unit forming yarn from a spun material while adjusting the tension of the spun material, a winding device winding the yarn formed by the yarn forming unit, a tension detecting unit detecting the tension of the yarn in the upstream side from the winding device in a direction in which the yarn travels, and a control unit controlling the yarn forming unit and the winding device based on a result of detection by the tension detecting unit such that the yarn is wound with adjustment of the tension added by the yarn forming unit.
- a spinning machine can maintain the tension of yarn within a predetermined range by providing feedback control to devices based on the tension of the yarn detected by a tension detecting unit.
- the spinning machine in this configuration can improve the quality of yarn.
- a spinning machine includes a core yarn supply device having a supporting unit supporting a core yarn package with core yarn wound thereon and a tension adding unit adding tension to the core yarn unwound from the core yarn package.
- a control unit may control the operation of a yarn forming unit based on a result of detection by a tension detecting unit.
- a winding device may wind yarn including core yarn. This configuration enables winding of yarn while forming the yarn including core yarn with higher quality.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Looms (AREA)
- Winding Filamentary Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2015201046A JP2017071882A (ja) | 2015-10-09 | 2015-10-09 | 紡績機 |
EP16191386.8A EP3153614B1 (fr) | 2015-10-09 | 2016-09-29 | Metier a filer |
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Application Number | Title | Priority Date | Filing Date |
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EP16191386.8A Division EP3153614B1 (fr) | 2015-10-09 | 2016-09-29 | Metier a filer |
EP16191386.8A Division-Into EP3153614B1 (fr) | 2015-10-09 | 2016-09-29 | Metier a filer |
Publications (2)
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EP3269851A1 true EP3269851A1 (fr) | 2018-01-17 |
EP3269851B1 EP3269851B1 (fr) | 2019-03-06 |
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EP17184907.8A Active EP3269851B1 (fr) | 2015-10-09 | 2016-09-29 | Métier a filer |
EP16191386.8A Active EP3153614B1 (fr) | 2015-10-09 | 2016-09-29 | Metier a filer |
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EP16191386.8A Active EP3153614B1 (fr) | 2015-10-09 | 2016-09-29 | Metier a filer |
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EP (2) | EP3269851B1 (fr) |
JP (1) | JP2017071882A (fr) |
CN (1) | CN106567170B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108100774B (zh) * | 2017-12-27 | 2020-04-21 | 北京光华纺织集团有限公司 | 一种纺织设备 |
EP3828325A1 (fr) * | 2019-11-29 | 2021-06-02 | Saurer Intelligent Technology AG | Poste de filage et machine à filer à jet d'air comprenant un tel poste de filage et procédé de détermination d'une défaillance de la résistance à la traction d'un fil |
WO2021170243A1 (fr) * | 2020-02-27 | 2021-09-02 | Sanko Tekstil Isletmeleri Sanayi Ve Ticaret Anonim Sirketi | Dispositif tendeur et métier à filer à anneau comprenant un dispositif tendeur |
CN113848706B (zh) * | 2021-09-13 | 2024-01-12 | 无锡宏源机电科技股份有限公司 | 一种丝线张力检测方法、控制方法及控制装置 |
CN113882047B (zh) * | 2021-09-28 | 2023-02-28 | 江苏育众电子科技有限公司 | 一种精准定位型张力探测器 |
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US4020621A (en) * | 1973-07-29 | 1977-05-03 | Hironori Hirai | Method of and apparatus for ending the broken yarn in an open-end spinning system |
US4819421A (en) * | 1987-04-27 | 1989-04-11 | Maschinenfabrik Rieter Ag | Method and apparatus for monitoring a predetermined yarn quality at a textile machine, especially at a friction spinning apparatus |
EP0368608A1 (fr) * | 1988-11-08 | 1990-05-16 | Hiroshi Yamaguchi | Dispositif de filage à panneau équipé d'un moteur d'anneau et méthode pour contrôler l'opération de filage dudit dispositif |
WO2006097008A1 (fr) * | 2005-03-16 | 2006-09-21 | Maschinenfabrik Rieter Ag | Machine a filer a jet d'air avec surveillance du processus de filature par des capteurs |
JP2007254919A (ja) * | 2006-03-23 | 2007-10-04 | Murata Mach Ltd | コアヤーン紡績機における芯糸有無判定装置 |
EP2565307A2 (fr) * | 2011-08-31 | 2013-03-06 | Murata Machinery, Ltd. | Fileuse |
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DE602004001410T2 (de) * | 2003-03-17 | 2007-07-05 | Murata Kikai K.K. | Spulmaschine für Faden |
JP4367647B2 (ja) * | 2005-05-16 | 2009-11-18 | 村田機械株式会社 | コアヤーン紡績における芯糸検出方法及び装置 |
JP2012131591A (ja) * | 2010-12-20 | 2012-07-12 | Murata Machinery Ltd | 芯糸供給装置及び芯糸供給装置を備える紡績機械 |
JP2014009409A (ja) * | 2012-06-28 | 2014-01-20 | Murata Mach Ltd | 糸貯留装置、紡績ユニット、および紡績機 |
JP2015081398A (ja) * | 2013-10-23 | 2015-04-27 | 村田機械株式会社 | ドラフト装置及び紡績機 |
JP2015101805A (ja) * | 2013-11-25 | 2015-06-04 | 村田機械株式会社 | 空気紡績装置及び紡績機 |
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2015
- 2015-10-09 JP JP2015201046A patent/JP2017071882A/ja active Pending
-
2016
- 2016-09-27 CN CN201610857462.4A patent/CN106567170B/zh active Active
- 2016-09-29 EP EP17184907.8A patent/EP3269851B1/fr active Active
- 2016-09-29 EP EP16191386.8A patent/EP3153614B1/fr active Active
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US4020621A (en) * | 1973-07-29 | 1977-05-03 | Hironori Hirai | Method of and apparatus for ending the broken yarn in an open-end spinning system |
US4819421A (en) * | 1987-04-27 | 1989-04-11 | Maschinenfabrik Rieter Ag | Method and apparatus for monitoring a predetermined yarn quality at a textile machine, especially at a friction spinning apparatus |
EP0368608A1 (fr) * | 1988-11-08 | 1990-05-16 | Hiroshi Yamaguchi | Dispositif de filage à panneau équipé d'un moteur d'anneau et méthode pour contrôler l'opération de filage dudit dispositif |
WO2006097008A1 (fr) * | 2005-03-16 | 2006-09-21 | Maschinenfabrik Rieter Ag | Machine a filer a jet d'air avec surveillance du processus de filature par des capteurs |
JP2007254919A (ja) * | 2006-03-23 | 2007-10-04 | Murata Mach Ltd | コアヤーン紡績機における芯糸有無判定装置 |
EP2565307A2 (fr) * | 2011-08-31 | 2013-03-06 | Murata Machinery, Ltd. | Fileuse |
JP2013049932A (ja) | 2011-08-31 | 2013-03-14 | Murata Mach Ltd | 紡績機 |
Also Published As
Publication number | Publication date |
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EP3269851B1 (fr) | 2019-03-06 |
CN106567170A (zh) | 2017-04-19 |
EP3153614A1 (fr) | 2017-04-12 |
JP2017071882A (ja) | 2017-04-13 |
CN106567170B (zh) | 2021-02-23 |
EP3153614B1 (fr) | 2019-02-27 |
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