EP2361867A2 - Machine de renvideur de fil - Google Patents

Machine de renvideur de fil Download PDF

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Publication number
EP2361867A2
EP2361867A2 EP11155209A EP11155209A EP2361867A2 EP 2361867 A2 EP2361867 A2 EP 2361867A2 EP 11155209 A EP11155209 A EP 11155209A EP 11155209 A EP11155209 A EP 11155209A EP 2361867 A2 EP2361867 A2 EP 2361867A2
Authority
EP
European Patent Office
Prior art keywords
yarn
roller
fluid
slack eliminating
accumulating roller
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
Application number
EP11155209A
Other languages
German (de)
English (en)
Other versions
EP2361867B1 (fr
EP2361867A3 (fr
Inventor
Masaki Oka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Murata Machinery Ltd filed Critical Murata Machinery Ltd
Publication of EP2361867A2 publication Critical patent/EP2361867A2/fr
Publication of EP2361867A3 publication Critical patent/EP2361867A3/fr
Application granted granted Critical
Publication of EP2361867B1 publication Critical patent/EP2361867B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • D01H4/48—Piecing arrangements; Control therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
    • B65H54/26—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores having one or more servicing units moving along a plurality of fixed winding units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a yarn winding machine for forming a wound package by winding a traveling yarn.
  • One type of conventionally-known yarn winding machine includes a winding device for forming a package by winding a traveling yarn, and a yarn accumulating device for temporarily accumulating the yarn to be wound by the winding device.
  • a spinning machine described in Patent Document 1 includes a spinning device, a winding device, a yarn clearer, a cutter, a yarn splicing device, and a yarn accumulating device (a yarn slack eliminating device) .
  • the winding device winds the yarn fed out from the spinning device.
  • the yarn clearer detects a yarn defect. When the yarn clearer detects a yarn defect, the cutter cuts the yarn.
  • the yarn splicing device splices an upstream yarn end (a yarn end at a spinning machine side) and a downstream yarn end (a yarn end at a winding device side) together.
  • the yarn accumulating device is arranged between the winding device and the cutter.
  • the yarn accumulating device includes a yarn accumulating roller (a slack eliminating roller), around which a yarn is wound, and a sensor (a wound amount sensor) for detecting an amount of yarn wound around the yarn accumulating roller.
  • a yarn accumulating roller a slack eliminating roller
  • a sensor a wound amount sensor
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2009-242041 ( FIG. 1 , Paragraph [0025])
  • the yarn wound around the yarn accumulating roller at the package side is unwound from the yarn accumulating roller and is usually wound into the package.
  • the yarn defect is present in a yarn portion at the package side. Yarn strength of the yarn portion is partially lowered at such a yarn defect portion. Therefore, the yarn may break at the yarn defect portion when the yarn portion is wound into the package, and a portion of the yarn portion may remain on the yarn accumulating roller.
  • Patent Document 1 The yarn accumulating device described in Patent Document 1 includes a sensor for detecting the amount of yarn wound around the yarn accumulating roller during winding of the package.
  • Patent Document 1 neither discloses nor suggests a problem that a small amount of yarn portion remaining on the yarn accumulating roller may be wound into the package when a yarn defect is detected and the yarn is cut, and a means for solving such a problem.
  • the yarn winding machine includes a winding device, a yarn defect detecting device, a cutting device, a yarn splicing device, a yarn accumulating device, and a control device.
  • the winding device forms a package by winding a traveling yarn.
  • the yarn defect detecting device detects a defect in the yarn to be wound by the winding device.
  • the cutting device cuts the yarn when the yarn defect detecting device detects a yarn defect.
  • the yarn splicing device splices an upstream yarn end and a downstream yarn end together after the yarn cut by the cutting device.
  • the yarn accumulating device is arranged between the winging device and the cutting device and temporarily accumulates the yarn to be wound by the winding device.
  • the control device controls the yarn winding machine.
  • the yarn accumulating device includes a yarn accumulating roller and a yarn detecting sensor.
  • the yarn accumulating roller is provided rotatable and winds the yarn around a surface thereof.
  • the yarn detecting sensor detects the yarn on the surface of the yarn accumulating roller.
  • the control device determines whether or not to control the yarn splicing device to carry out yarn splicing in accordance with a detection result of the yarn detecting sensor.
  • the control device prevents the yarn splicing device from carrying out yarn splicing. Accordingly, when resuming the winding of the package, the remaining yarn portion can be prevented from being wound into the package.
  • the yarn winding machine includes a fluid blowing device which blows fluid to the surface of the yarn accumulating roller after the yarn cut by the cutting device. According to such a configuration, even if a yarn portion is remaining at a position located away from a yarn detecting position of the yarn detecting sensor, the yarn portion can be moved to the yarn detecting position of the yarn detecting sensor by flow of the fluid blown from the fluid blowing device. Alternatively, by blowing the fluid by the fluid blowing device to the surface of the yarn accumulating roller, the yarn portion remaining on the surface of the yarn accumulating roller can be removed.
  • the yarn winding machine includes a yarn splicing cart equipped with the yarn splicing device and the fluid blowing device.
  • the control device controls the yarn splicing cart to travel closer to the yarn accumulating roller and controls the fluid blowing device to blow the fluid to the surface of the yarn accumulating roller.
  • the control device controls the yarn splicing device to carry out yarn splicing.
  • the control device determines that yarn splicing should not be carried out, and prevents the yarn splicing cart from travelling. Only if the yarn is not detected, the control device controls the yarn splicing cart to travel closer to the yarn accumulating roller. However, at the time of the yarn detection made before the travelling of the yarn splicing cart, there may be a case in which the yarn was not detected by the yarn detecting sensor due to the yarn remaining at the position located away from the yarn detecting position of the yarn detecting sensor.
  • the yarn splicing device is controlled to carry out yarn splicing.
  • the fluid blowing device blows the fluid to the yarn accumulating roller such that the fluid flows from a position, which is located away from the yarn detecting position of the yarn detecting sensor on the surface of the yarn accumulating roller, towards the yarn detecting position. Accordingly, even if a yarn portion is remaining at the position located away from the yarn detecting position of the yarn detecting sensor on the surface of the yarn accumulating roller, the fluid blown from the fluid blowing device moves the yarn portion to the yarn detecting position of the yarn detecting sensor. Consequently, the yarn portion remaining on the surface of the yarn accumulating roller can be reliably detected by the yarn detecting sensor.
  • the fluid blowing device includes a first nozzle and a second nozzle.
  • the first nozzle blows the fluid to a first end portion of the yarn accumulating roller in a rotational axis direction thereof.
  • the second nozzle blows the fluid to a second end portion of the yarn accumulating roller in the rotational axis direction thereof.
  • a position of a fluid injecting section of the first nozzle is displaced from a position of a fluid injecting section of the second nozzle.
  • the position of the fluid injecting section of the first nozzle is displaced from the position of the fluid injecting section of the second nozzle in the peripheral direction of the yarn accumulating roller, which allows the yarn remaining on the surface of the yarn accumulating roller to move to the yarn detecting position of the yarn detecting sensor.
  • the control device controls the yarn accumulating roller to rotate.
  • a position where the fluid collides with the yarn portion remaining on the yarn accumulating roller i.e., a position where the fluid acts
  • the yarn portion vibrates in the rotational axis direction of the yarn accumulating roller, and the yarn portion is easily detected by the yarn detecting sensor.
  • the yarn detecting sensor is a reflective photo sensor including a light emitting element and a light receiving element.
  • the light emitting element is arranged to irradiate light to a prescribed position on the yarn accumulating roller that is located in a middle portion of the yarn accumulating roller in its rotational axis direction.
  • the yarn detecting sensor can detect whether or not the yarn is wound to the prescribed position on the yarn accumulating roller during winding of the package by the winding device.
  • the photo sensor for detecting whether or not the yarn is wound to the prescribed position on the yarn accumulating roller (i.e., whether or not at least a prescribed amount of yarn is wound) during winding of the package by the winding device is also used as the yarn detecting sensor for detecting the yarn remaining on the yarn accumulating roller after yarn cut by the cutting device. Accordingly, without increasing the number of sensors, the yarn portion remaining on the yarn accumulating roller can be detected at the time of yarn cut.
  • FIG. 1 is a front view of a spinning machine according to an embodiment.
  • a spinning machine 1 (a yarn winding machine) includes a plurality of spinning units 2 which are arranged next to one another, a yarn splicing cart 3, a blower box 4, and a motor box 5.
  • the yarn splicing cart 3 is arranged capable of travelling along a direction in which the spinning units 2 are arranged next to one another.
  • each spinning unit 2 includes a draft device 6, a spinning device 7, a cutter 10 (a cutting device) , a yarn clearer 11 (a yarn defect detecting device) , a slack eliminating device 8 (a yarn accumulating device) , a winding device 12, and the like.
  • upstream and downstream refer to an upstream side and a downstream side in a travelling direction of a yarn at the time of spinning, respectively.
  • the draft device 6 is arranged close to an upper end portion of a casing 13 of a main body of the spinning machine 1.
  • a sliver 14 fed to the draft device 6 is drafted into a fiber bundle 15 by the draft device 6.
  • the fiber bundle 15 is spun by the spinning device 7, thereby producing a spun yarn 16.
  • the spun yarn 16 is wound by the winding device 12 at a downstream side, thereby forming a package 17.
  • the draft device 6 includes four rollers i.e. a back roller 22, a third roller 23, a middle roller 25 provided with an apron belt 24, and a front roller 26, which are arranged in this order along a travelling direction of the sliver 14 (the fiber bundle 15).
  • the apron belt 24 is wound around the middle roller 25 and a tensor bar 27.
  • the tensor bar 27 is urged in a direction departing away from the middle roller 25, thereby applying a prescribed tension to the apron belt 24.
  • a detailed configuration of the spinning device 7 will not be illustrated in the drawings; however, the present embodiment adopts a pneumatic type spinning device that use whirling airflow to apply twists to the fiber bundle 15 in order to produce the spun yarn 16.
  • the cutter 10 and the yarn clearer 11 are arranged downstream of the spinning device 7.
  • the yarn clearer 11 is configured so as to monitor thickness of the travelling spun yarn 16 and detect a thin yarn portion or a thick yarn portion of the spun yarn 16 (i.e., a yarn defect in the spun yarn 16). If the yarn clearer 11 detects a yarn defect, the yarn clearer 11 transmits a yarn defect detection signal to a unit controller 21 (refer to FIG. 6 ). When the unit controller 21 receives the yarn defect detection signal, the unit controller 21 immediately activates the cutter 10, and controls the cutter 10 to cut the spun yarn 16.
  • the slack eliminating device 8 is arranged between the cutter 10 and the winding device 12.
  • the slack eliminating device 8 includes a slack eliminating roller 30 (a yarn accumulating roller). By winding a prescribed amount of spun yarn 16 produced by the spinning device 7 around the slack eliminating roller 30, the slack eliminating device 8 temporarily accumulates the spun yarn 16 and adjusts yarn tension. Further, the slack eliminating device 8 also has a function to pull out the spun yarn 16 to a downstream side from the spinning device 7 by actively driving and rotating the slack eliminating roller 30 around which the spun yarn 16 is wound. A detailed description on the slack eliminating device 8 will be made later.
  • a travelling yarn detecting sensor 28 for detecting the spun yarn 16 travelling towards the winding device 12 is arranged downstream of the slack eliminating device 8.
  • the winding device 12 includes a winding drum 18 and a cradle 19 for rotatably supporting a bobbin.
  • the winding drum 18 rotates while making contact with a surface of the bobbin (or a surface of a yarn layer wound around the bobbin) to thereby rotate the bobbin such that the traveling spun yarn 16 is wound around the bobbin to form the package 17.
  • the yarn splicing cart 3 is equipped with a yarn splicing device 92, a suction pipe 93, and a suction mouth 94. As illustrated in FIG. 1 , the yarn splicing cart 3 is arranged so as to travel on a rail 91 arranged on the casing 13 of the main body of the spinning machine 1. When yarn breakage or yarn cut occurs in a certain spinning unit 2, the yarn splicing cart 3 travels to such spinning unit 2 and then stops.
  • the suction pipe 93 While swinging around a shaft in a vertical direction, the suction pipe 93 sucks and catches a yarn end of the spun yarn 16 discharged from the spinning device 7 (a yarn end on an upstream side), and guides the yarn end to the yarn splicing device 92. While swinging around a shaft in a vertical direction, the suction mouth 94 sucks and catches a yarn end of the spun yarn 16 from the package 17 supported rotatable by the winding device 12 (a yarn end on a downstream side) , and guides the yarn end to the yarn splicing device 92. The yarn splicing device 92 splices the guided yarn ends together. Further, the suction pipe 93 and suction mouth 94 are connected to a negative-pressure source accommodated in the blower box 4 and obtain suction force to suck a yarn end from the negative-pressure source.
  • the blower box 4 is arranged in one end of the arrangement of the plurality of spinning units 2.
  • the negative-pressure source including a blower, a filter, and the like is accommodated in the blower box 4.
  • the negative-pressure source is connected to a cleaning suction pipe (not illustrated in the drawings) for sucking and removing yarn waste and fiber waste generated by the draft device 6 or the slack eliminating device 8.
  • the negative-pressure source is also connected to the suction pipe 93 and the suction mouth 94 of the yarn splicing cart 3, and the like.
  • the motor box 5 is arranged in the other end of the arrangement of the plurality of spinning units 2 that is opposite from the side where the blower box 4 is arranged.
  • a motor for respectively driving the front roller 26 and the middle roller 25 of the draft device 6 of each of the plurality of spinning unit 2 is accommodated in the motor box 5.
  • the motor box 5 has a main control section 96 provided with a control panel 151.
  • the main control section 96 transmits and receives signals with the unit controller 21 of each spinning unit 2 and the yarn splicing cart 3, and performs operation control and state monitoring of the each spinning unit 2 and the yarn splicing cart 3.
  • the slack eliminating device 8 includes the slack eliminating roller 30 (the yarn accumulating roller), a yarn hooking member 31, an upstream guide 32, a downstream guide 33, and a yarn detecting sensor 34.
  • the slack eliminating roller 30 is a metallic cylindrical roller.
  • the yarn hooking member 31 has a tip end formed capable of being engaged with the spun yarn 16 (i.e., a tip end formed capable of hooking the spun yarn 16).
  • the yarn hooking member 31 is mounted on a downstream end portion of the slack eliminating roller 30.
  • the yarn hooking member 31 rotates integrally with the slack eliminating roller 30, which makes it possible to wind the spun yarn 16 around an outer peripheral surface of the slack eliminating roller 30.
  • both end portions of the slack eliminating roller 30 in an axial direction thereof are formed in a tapered shape in which the diameter continuously increases from a center side of the slack eliminating roller 30 towards an end side thereof. If the spun yarn 16 is wound from an upstream end portion of the slack eliminating roller 30 with a larger diameter, the wound spun yarn 16 is fed to the downstream end portion of the slack eliminating roller 30 by the taper-shaped upstream end portion. Accordingly, a prescribed amount of spun yarn 16 is temporarily accumulated on the slack eliminating roller 30. As described above, the spun yarn 16 is wound around the slack eliminating roller 30, thereby restricting fluctuation of yarn tension at upstream of the slack eliminating roller 30.
  • the slack eliminating roller 30 is driven and actively rotated by the motor 36, whereby the wound spun yarn 16 is unwound from the downstream end portion of the slack eliminating roller 30, and fed to the winding device 12. That is, the slack eliminating roller 30 also functions as a feed roller for feeding the spun yarn 16 fed from the spinning device 7 to the winding device 12.
  • the upstream guide 32 is arranged on the bracket 35, which supports the slack eliminating roller 30, and arranged slightly upstream of the slack eliminating roller 30.
  • the upstream guide 32 appropriately guides the spun yarn 16 to the outer peripheral surface of the slack eliminating roller 30. Further, the upstream guide 32 also functions as twist prevention for preventing twists of the spun yarn 16 transmitted from the spinning device 7 from propagating to a downstream side of the upstream guide 32.
  • the downstream guide 33 is also arranged on the bracket 35.
  • the downstream guide 33 is arranged downstream of the slack eliminating roller 30.
  • the downstream guide 33 guides the spun yarn 16 unwound from the slack eliminating roller 30 to the winding device 12.
  • the yarn detecting sensor 34 is a reflective photo sensor (a photo interrupter) including a light emitting element 41 and a light receiving element 42 which are accommodated in a case 44a and a case 44b, respectively.
  • An opening 40a through which light of the light emitting element 41 passes is formed on a surface (a light emitting surface) of the case 44a at a slack eliminating roller 30 side.
  • An opening 40b through which incoming light reflected from the slack eliminating roller 30 passes to the light receiving element 42 is formed on a surface (a light receiving surface) of the case 44b at the slack eliminating roller 30 side. Accordingly, light emitted to the outside from the light emitting element 41 through the opening 40a is reflected from the surface of the slack eliminating roller 30, and then the reflected light is received by the light receiving element 42 through the opening 40b.
  • the light emitting element 41 is arranged to irradiate light to a prescribed position on the yarn accumulating roller 30 that is located in a middle portion of the yarn accumulating roller 30 in its rotational axis direction. If the spun yarn 16 is present at the prescribed position, the irradiated light from the light emitting element 41 hits the spun yarn 16, and is reflected from the spun yarn 16. A reflection rate in such a case is lower than a reflection rate in a case in which the spun yarn 16 is not present and light is directly reflected from the surface of the metallic slack eliminating roller 30. Therefore, an amount of light received by the light receiving element 42 decreases.
  • the yarn detecting sensor 34 can detect from changes in the amount of light received by the receiving element 42, whether or not the spun yarn 16 is wound to the prescribed position (a yarn detecting position) on the outer peripheral surface of the slack eliminating roller 30 that is located in a middle portion of the yarn accumulating roller 30 and whether or not at least a prescribed amount of spun yarn 16 is accumulated.
  • the yarn clearer 11 detects a yarn defect in the spun yarn 16 and the spun yarn 16 is cut by the cutter 10, a very small amount of yarn portion may remain on the slack eliminating roller 30 as will be described below.
  • the spun yarn 16 at the package 17 side is normally unwound from the slack eliminating roller 30 and wound into the package 17.
  • the strength of the spun yarn 16 is partially lowered at such a yarn defect portion.
  • the spun yarn 16 may break at the yarn defect portion, and one yarn portion that is not wound into the package 17 may remain on the slack eliminating roller 30.
  • the yarn portion remaining on the slack eliminating roller 30 moves towards the package 17 along with the spun yarn 16 fed after the resumption of the winding.
  • the yarn portion thus may be mixed in the package 17, thereby lowering the quality of the package 17.
  • the yarn detecting sensor 34 detects whether or not a small amount of yarn portion 16a is remaining on the surface of the slack eliminating roller 30.
  • a determination as to whether or not to carry out yarn splicing by the yarn splicing device 92 is carried out according to a detection result of the yarn detecting sensor 34. A detailed description will be made later on such a determination on whether or not to carry out yarn splicing.
  • the yarn portion 16a that is present on the surface of the slack eliminating roller 30 is a small amount of spun yarn 16 wound on the slack eliminating roller 30 by about one to two times. It is preferable that the size of the opening 40a of the light emitting element 41 is determined such that the yarn portion 16a can be detected.
  • an irradiated range A on the slack eliminating roller 30 is defined by the opening 40a.
  • the opening 40a is formed in a slit shape that is long in one direction.
  • a width W1 in the shorter direction of the slit-shaped opening 40a is set such that a width W2 of the irradiated range A is substantially equal to a thickness D of the spun yarn 16.
  • the yarn detecting sensor 34 can reliably detect a very small amount of yarn portion 16a.
  • a longitudinal direction of the slit-shaped opening 40a and the yarn portion 16a of the spun yarn 16 to be detected are substantially parallel, an amount of yarn that falls within the irradiated range A increases and the detection accuracy of the yarn detecting sensor 34 is improved.
  • the spun yarn 16 is wound around the slack eliminating roller 30 during winding of the package 17 by the winding device 12, the spun yarn 16 is substantially parallel to a peripheral direction of the slack eliminating roller 30.
  • the longitudinal direction of the slit-shaped opening 40a is preferably parallel to the peripheral direction of the slack eliminating roller 30.
  • the yarn detecting sensor 34 for detecting whether or not at least a prescribed amount of spun yarn 16 is wound around the slack eliminating roller 30 during winding of the package 17 is also used as a sensor for detecting the spun yarn 16 remaining on the surface of the slack eliminating roller 30 at the time of yarn cut. Accordingly, without increasing the number of sensors, the yarn portion 16a remaining on the slack eliminating roller 30 can be detected at the time of yarn cut.
  • the yarn splicing cart 3 equipped with the yarn splicing device 92 travels to a position in a lower side of the slack eliminating roller 30 of the spinning unit 2. Further, the drafting of the sliver 14 (the production of fiber bundle 15) by the draft device 6 and the spinning by the spinning device 7 are resumed. The yarn end at the package 17 side and the yarn end of the spun yarn 16 newly fed from the spinning device 7 are spliced together by the yarn splicing device 92, and then the winding by the winding device 12 is resumed.
  • the yarn splicing cart 3 is provided with a first nozzle 45 and a second nozzle 46 (i.e., a fluid blowing device) for blowing air towards the slack eliminating roller 30.
  • the first nozzle 45 and the second nozzle 46 are respectively connected to an air supply source (not illustrated in the drawings) via a supply valve 47 (refer to FIG. 7 ) arranged on the yarn splicing cart 3.
  • Both the first nozzle 45 and the second nozzle 46 blow air towards the outer peripheral surface of the slack eliminating roller 30.
  • the first nozzle 45 blows air towards the tapered upstream end portion of the slack eliminating roller 30.
  • Such a blowing direction of the first nozzle 45 is a radial direction of the slack eliminating roller 30.
  • the second nozzle 46 blows air towards the tapered downstream end portion of the slack eliminating roller 30.
  • a tip end portion (an air injecting section) of the second nozzle 46 is arranged to face to a middle portion of the slack eliminating roller 30 in the rotational axis direction thereof and arranged to be inclined with respect to the radial direction of the slack eliminating roller 30.
  • the first nozzle 45 and the second nozzle 46 blow air towards the outer peripheral surface of the slack eliminating roller 30 from both end portions of the slack eliminating roller 30 in the axial direction thereof, thereby removing the yarn portion 16a of the spun yarn 16 remaining on the outer peripheral surface of the slack eliminating roller 30. Further, the yarn portion 16a removed from the slack eliminating roller 30 by the air blown from the first nozzle 45 and the second nozzle 46 is sucked and discharged by a cleaning suction pipe (not illustrated in the drawings) arranged in the vicinity of the slack eliminating roller 30.
  • the first nozzle 45 and the second nozzle 46 are arranged to sandwich the yarn detecting sensor 34 with respect to the rotational axis direction of the slack eliminating roller 30.
  • the air blown from the first nozzle 45 and the second nozzle 46 to both end portions of the slack eliminating roller 30 flows over the outer peripheral surface of the slack eliminating roller 30 in the rotational axis direction thereof, and reaches a middle portion of the slack eliminating roller 30, which is an irradiating position of the light emitting element 41 of the yarn detecting sensor 34.
  • the yarn portion 16a is transferred to the yarn detecting position of the yarn detecting sensor 34 by the air blown from the first nozzle 45 and the second nozzle 46. Consequently, the yarn portion 16a remaining on the surface of the slack eliminating roller 30 is reliably detected by the yarn detecting sensor 34.
  • a position of a tip end portion (an air injecting section) of the first nozzle 45 and a position of the tip end portion (the air injecting section) of the second nozzle 46 are the same with respect to the peripheral direction of the slack eliminating roller 30, air which is blown from the first nozzle 45 and the second nozzle 46 to the slack eliminating roller 30 and flows in the axial direction of the slack eliminating roller 30 collides with each other on the surface of the slack eliminating roller 30. Accordingly, there are cases where the yarn portion 16a remaining on the surface of the slack eliminating roller 30 cannot move in the axial direction of the slack eliminating roller 30.
  • the spun yarn 16 may be stopped at the position located away from the yarn detecting position of the yarn detecting sensor 34.
  • the position of the tip end portion of the first nozzle 45 is thus arranged to be displaced from the position of the tip end portion of the second nozzle 46 in the peripheral direction of the slack eliminating roller 30.
  • the yarn portion 16a is pressed at two portions thereof by force of the air injected from the first nozzle 45 and the second nozzle 46. Accordingly, the yarn portion 16a can move in the rotational axis direction of the slack eliminating roller 30.
  • first nozzle 45 and the second nozzle 46 blow air in the spinning machine 1 according to the present embodiment.
  • a feed roller for feeding the spun yarn 16 to the winding device 12 is not provided at the downstream of the spinning device 7 in the spinning machine 1 according to the present embodiment.
  • the actively-rotating slack eliminating roller 30 functions to pull out the spun yarn 16 from the spinning device 7 to a downstream side.
  • the yarn detecting sensor 34 detects whether or not the spun yarn 16 is wound to a middle portion of the slack eliminating roller 30.
  • the yarn detecting sensor 34 is not configured capable of monitoring the excessive winding of the spun yarn 16 on the slack eliminating roller 30. Accordingly, in order to increase an acceptable amount of spun yarn 16 to be wound around the slack eliminating roller 30, the diameter of the slack eliminating roller 30 is set to be larger than the diameter of a conventional slack eliminating roller.
  • the diameter of the slack eliminating roller 30 is set to be large, the area of the outer peripheral surface of the slack eliminating roller 30 also becomes large.
  • the first nozzle 45 and the second nozzle 46 blow air to the surface of the slack eliminating roller 30. Accordingly, the yarn portion 16a is moved on the surface of the slack eliminating roller 30 so as to fall within the yarn detecting position of the yarn detecting sensor 34.
  • the main control section 96 (a control device) controls the entire spinning machine 1.
  • the main control section 96 is connected to unit controllers 21 of the plurality of spinning units 2 and a controller 50 of the yarn splicing cart 3.
  • the main control section 96 performs control and state monitoring of the plurality of spinning units 2 and the yarn splicing cart 3.
  • the unit controller 21 of the spinning unit 2 includes a Central Processing Unit (CPU) that is an arithmetic processing unit, a Read-Only Memory (ROM), a Random Access Memory (RAM), an input/output interface, and the like.
  • the ROM stores programs to be executed by the CPU, and data used for the programs.
  • the RAM temporarily stores data at the time of program execution.
  • the input/output interface carries out input and output of data with the outside.
  • the main control section 96, the unit controllers 21 of the plurality of spinning units 2, and the controller 50 of the yarn splicing cart 3 perform the following processes in addition to the package winding process realized by the control of the spinning device 7 and the winding device 12.
  • the yarn detecting sensor 34 detects whether or not the spun yarn 16 is present at the prescribed yarn detecting position on the outer peripheral surface of the slack eliminating roller 30 that is located in the middle portion of the slack eliminating roller 30 (i.e., whether or not the prescribed amount of spun yarn 16 is wound from the upstream end portion to the middle portion of the slack eliminating roller 30). If a determination is made that an amount of the spun yarn 16 wound around the slack eliminating roller 30 has become small, the unit controller 21 controls winding speed of the winding device 12 to be reduced, for example, in order to maintain a state in which at least a prescribed amount of the spun yarn 16 is always wound around the slack eliminating roller 30.
  • the unit controller 21 controls the cutter 10 to cut the spun yarn 16.
  • the yarn portion 16a is detected by the yarn detecting sensor 34.
  • a detection result of the yarn detecting sensor 34 is transmitted from the unit controller 21 to the main control section 96.
  • the main control section 96 determines whether or not to control the yarn splicing device 92 to carry out yarn splicing in accordance with the detection result of the yarn detecting sensor 34 (in accordance with the presence or absence of the yarn portion 16a).
  • step S10 If a yarn defect is detected in the spun yarn 16 by the yarn clearer 11 (step S10: Yes), the unit controller 21 controls the cutter 10 to cut the spun yarn 16 (step S11) .
  • the main control section 96 stops feeding and drafting of the sliver 14 by the draft device 6 (i.e., driving of the front roller 26 and the middle roller 25). Then, the main control section 96 stops the spinning by the spinning device 7 (i.e., supplying of air to the pneumatic spinning device 7) (step S12) .
  • the main control section 96 determines that the detected yarn defect is not a temporarily-occurring defect, but a major defect (e.g., a very long-lasting yarn defect) caused by a trouble occurring in the spinning unit 2 (step S13: Yes).
  • the main control section 96 controls the unit controller 21 to light an abnormal display lamp and the like in order to notify an operator of such an abnormal state, and urges the operator to check and/or replace components such as various rollers (operator call: step S14) . Then, if the abnormal state is solved by the operator, the main control section 96 determines that yarn splicing can be carried out.
  • the main control section 96 transmits a signal to the controller 50 of the yarn splicing cart 3, and controls the yarn splicing cart 3 to travel to a position located close to the slack eliminating roller 30 (a position at a lower side of the slack eliminating roller 30) of the spinning unit 2 in which the yarn defect was detected and the yarn cut was carried out (yarn splicing cart call: step S17).
  • step S13 determines that the detected yarn detect is a minor temporarily-occurring defect
  • step S15 the yarn detecting sensor 34 detects whether or not a small amount of the spun yarn 16 is remaining on the slack eliminating roller 30 due to the spun yarn 16 at the package 17 side being cut at the yarn defect portion at the time of yarn cut. If the yarn portion 16a is detected by the yarn detecting sensor 34 (step S15: Yes), the main control section 96 notifies the operator of such an abnormal state by lighting the abnormal display lamp, and the like, and urges the operator to remove the remaining yarn portion 16a (operator call: step S16).
  • step S15 a determination is made again as to whether or not the yarn portion 16a is surely removed in step S15. If the yarn portion 16a is not detected by the yarn detecting sensor 34 (step S15: No), the main control section 96 transmits a signal to the controller 50 of the yarn splicing cart 3, controls the yarn splicing cart 3 to travel to the position located close to the slack eliminating roller 30 (the position in the lower side of the slack eliminating roller 30) of the spinning unit 2 in which the yarn defect was detected and the yarn cut was carried out (yarn splicing cart call: step S17), and then controls a yarn splicing process described below to be performed (step S20).
  • the main control section 96 determines whether or not to control the yarn splicing cart 3 to travel in accordance with a detection result of the yarn detecting sensor 34, thereby minimizing unnecessary travelling of the yarn splicing cart 3 under a state in which yarn splicing is prohibited.
  • the controller 50 of the yarn splicing cart 3 controls the supply valve 47 to blow air from the first nozzle 45 and the second nozzle 46 towards the slack eliminating roller 30 (step S21) .
  • the air blown from the first nozzle 45 and the second nozzle 46 to the both end portions of the slack eliminating roller 30 flows along the outer peripheral surface of the slack eliminating roller 30 and reaches the middle portion of the slack eliminating roller 30 that is the yarn detecting position of the yarn detecting sensor 34. Therefore, even if the yarn portion 16a is remaining at the position located away from the yarn detecting position of the slack eliminating roller 30, the yarn portion 16a is transferred to the yarn detecting position.
  • the position of the tip end portion of the first nozzle 45 is displaced from the position of the tip end portion of the second nozzle 46. It is preferable that the slack eliminating roller 30 is rotated under such a state in which air is blown from the first nozzle 45 and the second nozzle 46.
  • a position in which the air collides with the yarn portion 16a remaining on the surface of the slack eliminating roller 30 is continuously changed by the above-described rotation of the slack eliminating roller 30, thereby greatly vibrating the yarn portion 16a in the rotational axis direction of the slack eliminating roller 30 (i.e., a horizontal direction in FIG. 6 ) . Consequently, even if an initial position of the yarn portion 16a is located away from the yarn detecting position of the yarn detecting sensor 34 in the rotational axis direction of the slack eliminating roller 30, the yarn portion 16a can be easily detected by the yarn detecting sensor 34.
  • step S22 After the air is blown from the first nozzle 45 and the second nozzle 46, if the yarn portion 16a is detected by the yarn detecting sensor 34 (step S22: Yes), the main control section 96 notifies the operator of such a state and urges the operator to remove the remaining yarn portion 16a from the slack eliminating roller 30 (operator call: step S23) . Then, when the operator removes the yarn portion 16a from the slack eliminating roller 30 and the abnormal state is solved, air is blown again from the first nozzle 45 and the second nozzle 46 (step S21) . Furthermore, in step S22, a determination is carried out as to whether or not the yarn portion 16a is surely removed from the slack eliminating roller 30.
  • step S22 when the yarn portion 16a is not detected by the yarn detecting sensor 34 even if air is blown from the first nozzle 45 and the second nozzle 46 (step S22: No), a determination is made that no yarn portion 16a is present on the surface of the slack eliminating roller 30. Then, the main control section 96 controls to start feeding and drafting of the sliver 14 by the draft device 6 and spinning by spinning device 7. A yarn end of the spun yarn 16 newly fed from the spinning device 7 and a yarn end at the package 17 side are spliced together by the yarn splicing device 92 (yarn splicing operation: step S24).
  • a determination as to whether or not such a yarn splicing operation has succeeded is carried out in accordance with detection results of the yarn detecting sensor 34 and the travelling yarn detecting sensor 28 (refer to FIG. 2 ) (step S25) . If the spun yarn 16 is detected by both the yarn detecting sensor 34 and the travelling yarn detecting sensor 28, a determination is made that the yarn splicing operation has succeeded. If the spun yarn 16 is not detected by either the yarn detecting sensor 34 or the travelling yarn detecting sensor 28, a determination is made that the yarn splicing operation has failed. If a determination is made that the yarn splicing operation has succeeded (step S25 : Yes), the winding operation of the package 17 by the winding device 12 is resumed.
  • step S25 If a determination is made that the yarn splicing operation has failed (step S25: No) , the abnormal state is notified to the operator, and the operator is urged to check components that are used during the yarn splicing operation by the yarn splicing device 92 and the like (operator call: step S26) . After the check by the operator is completed and the abnormal state is solved, the process proceeds onto step S21. Then, air is blown again from the first nozzle 45 and the second nozzle 46 to the slack eliminating roller 30. At this point of time, a detection is carried out as to whether or not a small amount of yarn portion 16a, which may have been generated due to failure of the yarn splicing operation, is remaining on the surface of the slack eliminating roller 30. If the yarn portion 16a is not remaining on the slack eliminating roller 30, the yarn splicing operation is performed again (step S24).
  • the yarn splicing operation may be performed immediately without blowing air from the first nozzle 45 and the second nozzle 46 (step S21) and detecting the yarn portion 16a by the yarn detecting sensor 34 (step S22) .
  • the yarn splicing operation may be performed immediately without blowing air from the first nozzle 45 and the second nozzle 46 (step S21) and detecting the yarn portion 16a by the yarn detecting sensor 34 (step S22) .
  • the yarn splicing operation may be performed immediately without blowing air from the first nozzle 45 and the second nozzle 46 (step S21) and detecting the yarn portion 16a by the yarn detecting sensor 34 (step S22) .
  • step S22 the detection of the yarn portion 16a is carried out again by the yarn detecting sensor 34 (step S22), and then the yarn splicing operation is carried out(step S24).
  • a determination as to whether or not the main control section 96 controls the yarn splicing device 92 to perform a yarn splicing operation in accordance with a detection result of the yarn detecting sensor 34 may be made such that the yarn splicing operation is prohibited immediately after the yarn detecting sensor 34 detects the yarn portion 16a for even a second.
  • the yarn detecting sensor 34 instantaneously detects the yarn portion 16a
  • a state in which the yarn portion 16a is not detected lasts for a certain period of time
  • a determination may be made that although the yarn portion 16a initially remained on the slack eliminating roller 30, the yarn portion 16a has been removed from the slack eliminating roller 30 by blowing air from the first nozzle 45 and the second nozzle 46, and the yarn splicing operation may be permitted.
  • the first nozzle 45 and the second nozzle 46 for blowing air to the surface of the slack eliminating roller 30 are arranged on the yarn splicing cart 3 equipped with the yarn splicing device 92.
  • the first nozzle 45 and the second nozzle 46 may be arranged separately from the yarn splicing cart 3 (e.g., the first nozzle 45 and the second nozzle 46 may be arranged on the casing 13 of the spinning machine 1). In this case, after the spun yarn 16 is cut by the cutter 10, air is blown from the first nozzle 45 and the second nozzle 46 towards the slack eliminating roller 30.
  • the yarn detecting sensor 34 can reliably detect the yarn portion 16a. Consequently, after the travelling of the yarn splicing cart 3, detection of the yarn portion 16a by the yarn detecting sensor 34 and a determination as to whether or not a yarn splicing operation is performed are not required to be carried out again.
  • Only one nozzle may be provided for blowing air to the surface of the slack eliminating roller 30.
  • the yarn portion 16a remaining on the surface of the slack eliminating roller 30 is moved in one direction by the air blown from the single nozzle and reaches the yarn detecting position of the yarn detecting sensor 34.
  • blowing air from a single nozzle in one direction of the yarn eliminating roller 30 is preferable than blowing air from both the first nozzle 45 and the second nozzle 46 as in the above-described embodiment.
  • three or more nozzles may be provided according to a purpose of blowing air.
  • the yarn detecting sensor 34 may be configured capable of detecting the yarn portion 16a over a wide range of the surface of the slack eliminating roller 30.
  • a plurality of yarn detecting sensors 34 may be arranged in the rotational axis direction of the slack eliminating roller 30.
  • a single yarn detecting sensor may be arranged capable of scanning in the rotational axis direction of the slack eliminating roller 30. In this case, since the yarn portion 16a is not required to be moved on the surface of the slack eliminating roller 30, a nozzle for blowing air may be omitted.
  • a single yarn detecting sensor 34 functions as both the sensor for detecting the spun yarn 16 wound around the slack eliminating roller 30 during winding of a package by the winding device 12 and the sensor for detecting the yarn portion 16a remaining on the slack eliminating roller 30 at the time of yarn cut by the cutter 10.
  • separate sensors may be provided.
  • the yarn detecting sensor 34 for detecting the spun yarn 16 on the surface of the slack eliminating roller 30 is not limited to the reflective photo sensor described in the above-described embodiment. Sensors with other various detection methods can be adopted as the yarn detecting sensor 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP11155209.7A 2010-02-24 2011-02-21 Machine de renvideur de fil Not-in-force EP2361867B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010038102A JP2011173674A (ja) 2010-02-24 2010-02-24 糸巻取機

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EP2361867A2 true EP2361867A2 (fr) 2011-08-31
EP2361867A3 EP2361867A3 (fr) 2012-05-02
EP2361867B1 EP2361867B1 (fr) 2014-10-29

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CN (1) CN102161451B (fr)

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EP2966023A1 (fr) * 2014-07-10 2016-01-13 Murata Machinery, Ltd. Machine de renvideur de fil et procédé de renvidage de fil
EP2573217A3 (fr) * 2011-09-21 2017-03-01 Murata Machinery, Ltd. Unité de filage, métier à filer et procédé de traitement de fil
CN108190641A (zh) * 2018-01-26 2018-06-22 联亚智能科技（苏州）有限公司 一种橡胶部件自动缠绕机组
US10526731B2 (en) 2014-12-22 2020-01-07 Apple, Inc. Conductive signal paths in woven fabrics
EP3904253A1 (fr) * 2020-04-27 2021-11-03 Saurer Spinning Solutions GmbH & Co. KG Machine textile, ainsi que chariot de service pour machines textiles

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JP2013049932A (ja) * 2011-08-31 2013-03-14 Murata Mach Ltd 紡績機
JP5982941B2 (ja) * 2012-03-28 2016-08-31 村田機械株式会社 糸斑信号検出装置および糸巻取機
JP2014009422A (ja) * 2012-06-29 2014-01-20 Murata Mach Ltd 繊維機械、及び繊維機械の周期斑検出方法
JP2014019541A (ja) * 2012-07-18 2014-02-03 Murata Mach Ltd 糸監視装置及び糸巻取機
JP2015132029A (ja) * 2014-01-15 2015-07-23 村田機械株式会社 糸処理予測装置、糸処理装置、及び、糸処理予測方法
JP2015193451A (ja) * 2014-03-31 2015-11-05 村田機械株式会社 糸貯留ローラ及び糸巻取機
JP2016050054A (ja) * 2014-08-28 2016-04-11 村田機械株式会社 糸巻取装置及び繊維機械
DE102015000570A1 (de) * 2015-01-17 2016-07-21 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zum Bewerten der Spleißverbindungen
JP6828564B2 (ja) * 2017-04-04 2021-02-10 株式会社豊田自動織機 リング精紡機の糸継ぎ作業支援装置
CN109775443B (zh) * 2017-11-10 2022-01-04 苏州凌犀物联网技术有限公司 一种机头初始定位装置和初始定位方法
CH715390A1 (de) * 2018-09-27 2020-03-31 Rieter Ag Maschf Verfahren zum Betreiben einer Ringspinnmaschine.
IT201900001195A1 (it) * 2019-01-28 2020-07-28 Savio Macch Tessili Spa Apparato di filatura, in particolare ad aria, con regolazione in continuo di un sistema di accumulo filo e relativo metodo di regolazione in continuo di un sistema di accumulo filo in un apparato di filatura
CN111691049B (zh) * 2020-04-29 2022-08-12 广东前进牛仔布有限公司 一种纱线处理工艺及其装置

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2573217A3 (fr) * 2011-09-21 2017-03-01 Murata Machinery, Ltd. Unité de filage, métier à filer et procédé de traitement de fil
CN105253710A (zh) * 2014-07-10 2016-01-20 村田机械株式会社 纱线卷绕机及纱线卷绕方法
EP2966023A1 (fr) * 2014-07-10 2016-01-13 Murata Machinery, Ltd. Machine de renvideur de fil et procédé de renvidage de fil
CN110642095A (zh) * 2014-07-10 2020-01-03 村田机械株式会社 纱线卷绕机
CN105253710B (zh) * 2014-07-10 2020-03-20 村田机械株式会社 纱线卷绕机及纱线卷绕方法
US11124904B2 (en) 2014-12-22 2021-09-21 Apple Inc. Conductive signal paths in woven fabrics
US10526731B2 (en) 2014-12-22 2020-01-07 Apple, Inc. Conductive signal paths in woven fabrics
CN108190641A (zh) * 2018-01-26 2018-06-22 联亚智能科技（苏州）有限公司 一种橡胶部件自动缠绕机组
CN108190641B (zh) * 2018-01-26 2024-06-04 联亚智能科技（苏州）有限公司 一种橡胶部件自动缠绕机组
EP3904253A1 (fr) * 2020-04-27 2021-11-03 Saurer Spinning Solutions GmbH & Co. KG Machine textile, ainsi que chariot de service pour machines textiles
US20210348306A1 (en) * 2020-04-27 2021-11-11 Saurer Spinning Solutions Gmbh & Co. Kg Textile machine and service cart for textile machines
CN113636418A (zh) * 2020-04-27 2021-11-12 卓郎纺织解决方案两合股份有限公司 纺织机以及用于纺织机的维护小车
CN113636418B (zh) * 2020-04-27 2023-12-05 卓郎纺织解决方案两合股份有限公司 纺织机以及用于纺织机的维护小车

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EP2361867B1 (fr) 2014-10-29
CN102161451A (zh) 2011-08-24
EP2361867A3 (fr) 2012-05-02
JP2011173674A (ja) 2011-09-08
CN102161451B (zh) 2014-12-10

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