EP2905248B1 - Dispositif d'épissage de fil et machine d'enroulement de fils - Google Patents

Dispositif d'épissage de fil et machine d'enroulement de fils Download PDF

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Publication number
EP2905248B1
EP2905248B1 EP15153037.5A EP15153037A EP2905248B1 EP 2905248 B1 EP2905248 B1 EP 2905248B1 EP 15153037 A EP15153037 A EP 15153037A EP 2905248 B1 EP2905248 B1 EP 2905248B1
Authority
EP
European Patent Office
Prior art keywords
yarn
reflective sensor
reflecting section
suction pipe
catching device
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.)
Not-in-force
Application number
EP15153037.5A
Other languages
German (de)
English (en)
Other versions
EP2905248A1 (fr
Inventor
Tsutomu Mekata
Takahiro Toyoda
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 EP2905248A1 publication Critical patent/EP2905248A1/fr
Application granted granted Critical
Publication of EP2905248B1 publication Critical patent/EP2905248B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B65H67/085—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement end-finding at the take-up package, e.g. by suction and reverse package rotation
    • 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
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0321—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators
    • B65H63/0324—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators using photo-electric sensing means, i.e. the defect signal is a variation of light energy
    • 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 catching device and a yarn winding machine.
  • a device adapted to carry out yarn processing such as producing a spun yarn is known.
  • an operation of joining a disconnected yarn is carried out when yarn breakage occurs.
  • a yarn catching device adapted to catch the disconnected yarn by a suction force is arranged in the device adapted to carry out the yarn processing.
  • Such a yarn catching device is described in, for example, Japanese Unexamined Patent Publication No. 09-31769 .
  • a light projecting section and a light receiving section are arranged on a path, through which the yarn passes when caught by the suction force, to detect whether or not the yarn is caught.
  • JP H05 246626 A describes a yarn catching device as defined in the preamble of the independent claim.
  • a yarn catching device includes a suction pipe adapted to suck a yarn; and a reflective sensor adapted to detect the yarn passing through the suction pipe, wherein a reflecting section adapted to reflect light emitted from the reflective sensor in a direction different from the reflective sensor is arranged at a portion facing the reflective sensor with a path of the yarn in the suction pipe therebetween.
  • the reflecting section reflects the light emitted from the reflective sensor in the direction different from the reflective sensor.
  • the light reflected at a portion facing the reflective sensor with the path of the yarn in the suction pipe therebetween can be suppressed from being detected by the reflective sensor. Therefore, the reflective sensor can suitably detect the light reflected by the yarn, and can reliably detect the presence or absence of the yarn sucked by the suction pipe.
  • the reflecting section may be arranged at a position projecting out toward an outer side of the suction pipe from the suction pipe.
  • the distance between the reflective sensor and the reflecting section becomes long, whereby the light reflected by the reflecting section can be weakened. Therefore, the light is weak even when the light reflected by the reflecting section enters the reflective sensor after being reflected over a plurality of times, and hence the light reflected by the yarn can be suitably detected by the reflective sensor.
  • the reflecting section may be arranged on the outer side of the suction pipe, and a hole may be formed in a wall of the suction pipe between the reflecting section and the reflective sensor.
  • the degree of freedom in the position of installing the reflecting section can be increased without being subjected to the restriction of the thickness of the suction pipe.
  • the light reflected by the reflecting section is less likely to enter the reflective sensor again through the hole at the wall of the suction pipe, and hence the reflective sensor can suitably detect the light reflected by the yarn.
  • the yarn catching device may further include a connection pipe adapted to connect the reflecting section and an outer peripheral surface of the suction pipe. In this case, the air does not enter the suction pipe from the hole formed at the wall of the suction pipe, and the suction force at the time of sucking the yarn is not reduced.
  • the reflecting section may have an inclined surface inclined with respect to an axis of the light emitted from the reflective sensor. In this case, the light emitted from the reflective sensor can be easily reflected in the direction different from the reflective sensor by the inclined surface.
  • the reflecting section may have an inclined surface having a convex form projecting out toward the reflective sensor.
  • the light that entered the reflecting section is diffused radially by being reflected by the convex inclined surface.
  • the reflecting section can easily reflect the light emitted from the reflective sensor in the direction different from the reflective sensor by diffusing the light by the convex inclined surface.
  • the reflecting section may be removably attached with respect to the suction pipe.
  • the maintenance and the like of the surface of the reflective sensor in the suction pipe can be easily carried out by detaching the reflecting section.
  • a yarn winding machine includes the yarn catching device described above; and a yarn winding unit including a draft device adapted to draft a fiber bundle, a spinning device adapted to apply twists to the fiber bundle drafted by the draft device to produce a spun yarn, and a winding device adapted to wind the spun yarn produced by the spinning device into a package, wherein the yarn catching device catches the spun yarn produced by the spinning device.
  • the reflective sensor can suitably detect the light reflected by the spun yarn, and can reliably detect the presence or absence of the spun yarn sucked by the suction pipe.
  • the yarn winding device further includes an operation cart on which the yarn catching device is arranged, wherein a plurality of the yarn winding units are arranged; and the operation cart travels with respect to the plurality of yarn winding units and catches the spun yarn at each of the yarn winding units.
  • the spun yarn spun at each of the yarn winding units can be caught by the yarn catching device by travelling the operation cart.
  • the presence or absence of the sucked yarn can be reliably detected even when the reflective sensor is used.
  • Upstream and downstream in the present specification respectively refer to upstream and downstream in a traveling direction of a yarn during spinning.
  • a spinning machine (yarn winding machine) 1 illustrated in FIG. 1 includes a plurality of spinning units (yarn winding units) 2 arranged in line, a yarn joining cart (operation cart) 3, a doffing cart (operation cart) 4, a motor box 5, and a blower box 80.
  • the blower box 80 accommodates an air suction source for generating a suction flow and/or an air supply source for generating a whirling airflow, or the like at each section of the spinning unit 2.
  • the motor box 5 accommodates a motor and the like for supplying power to each section of the spinning unit 2.
  • an operator passage extending in a direction in which the spinning units 2 are arranged is provided at a yarn path side of a spun yarn 10 with respect to the spinning unit 2.
  • the operator can perform operation, monitoring, and the like of each spinning unit 2 from the operator passage.
  • each spinning unit 2 includes a draft device 7, a pneumatic spinning device (spinning device) 9, a yarn accumulating device 12, a waxing device 14, and a winding device 13 arranged in this order from upstream to downstream.
  • the draft device 7 is arranged in proximity to an upper end of a housing 6 of the spinning machine 1 in a machine height direction of the spinning machine 1.
  • a fiber bundle 8 (see FIG. 2 ) fed from the draft device 7 is spun by the pneumatic spinning device 9.
  • the spun yarn 10 fed from the pneumatic spinning device 9 is passed through a yarn monitoring device 52, and thereafter, fed further downstream by the yarn accumulating device 12, and applied with wax in the waxing device 14. Thereafter, the spun yarn 10 is wound by the winding device 13, and a package 45 is formed.
  • the draft device 7 drafts a sliver 15 to obtain the fiber bundle 8.
  • the draft device 7 includes four roller pairs, i.e., a back roller pair 16, a third roller pair 17, a middle roller pair 19 provided with an apron belt 18, and a front roller pair 20.
  • a bottom roller of each of the roller pairs 16, 17, 19, and 20 is driven by power from the motor box 5, or by power of drive sources (not illustrated) arranged individually.
  • Each of the roller pairs 16, 17, 19, and 20 is driven with a different rotation speed.
  • the draft device 7 drafts the sliver 15 supplied from the upstream into the fiber bundle 8, and feeds the fiber bundle 8 to the pneumatic spinning device 9.
  • the pneumatic spinning device 9 applies twists to the fiber bundle 8 using the whirling airflow to produce the spun yarn 10.
  • the pneumatic spinning device 9 includes a fiber guiding section, a whirling airflow generating nozzle, and a hollow guide shaft body.
  • the fiber guiding section guides the fiber bundle 8 fed from the draft device 7 to a spinning chamber formed inside the pneumatic spinning device 9.
  • the whirling airflow generating nozzle is arranged at a periphery of a path of the fiber bundle 8 to generate the whirling airflow in the spinning chamber. This whirling airflow causes a fiber end of the fiber bundle 8 in the spinning chamber to be reversed and to whirl.
  • the hollow guide shaft body guides the spun yarn 10 from the spinning chamber to an outside of the pneumatic spinning device 9.
  • the yarn accumulating device 12 is arranged downstream of the pneumatic spinning device 9.
  • the yarn accumulating device 12 has a function of applying a predetermined tension on the spun yarn 10 to pull out the spun yarn 10 from the pneumatic spinning device 9, a function of accumulating the spun yarn 10 fed from the pneumatic spinning device 9 during a yarn joining operation by the yarn joining cart 3 to prevent slackening of the spun yarn 10, and a function of adjusting the tension of the spun yarn 10 such that a fluctuation of the tension at the winding device 13 is not transmitted to the pneumatic spinning device 9.
  • the yarn accumulating device 12 includes a yarn accumulating roller 21, a yarn hooking member 22, an upstream guide 23, an electric motor 25, a downstream guide 26, and an accumulated amount detecting sensor 27.
  • the yarn hooking member 22 engages with the spun yarn 10 and integrally rotates with the yarn accumulating roller 21 while being engaged with the spun yarn 10 to wind the spun yarn 10 around an outer peripheral surface of the yarn accumulating roller 21.
  • the yarn accumulating roller 21 has a prescribed amount of the spun yarn 10 wound around the outer peripheral surface thereof to accumulate the spun yarn 10.
  • the yarn accumulating roller 21 is rotatably driven by the electric motor 25. When the yarn accumulating roller 21 is rotated, the spun yarn 10 wound around the outer peripheral surface of the yarn accumulating roller 21 is wound to tighten the yarn accumulating roller 21, and the spun yarn 10 located upstream of the yarn accumulating device 12 is pulled.
  • the yarn accumulating device 12 can apply a predetermined tension on the spun yarn 10 and pull out the spun yarn 10 at a predetermined speed from the pneumatic spinning device 9, and transport the spun yarn 10 towards the downstream at a predetermined speed.
  • the accumulated amount detecting sensor 27 detects, in a non-contacting manner, the accumulated amount of the spun yarn 10 wound around the yarn accumulating roller 21.
  • the accumulated amount detecting sensor 27 outputs an accumulated amount signal indicating the detected accumulated amount of the spun yarn 10 to a unit controller adapted to control the spinning unit 2, and the like.
  • the upstream guide 23 is arranged slightly upstream of the yarn accumulating roller 21.
  • the upstream guide 23 appropriately guides the spun yarn 10 with respect to the outer peripheral surface of the yarn accumulating roller 21.
  • the upstream guide 23 prevents the twists of the spun yarn 10 propagating from the pneumatic spinning device 9 from being transmitted downstream of the upstream guide 23.
  • An air cylinder 24 is attached to the upstream guide 23.
  • the upstream guide 23 can be appropriately moved by the drive of the air cylinder 24.
  • the downstream guide 26 is arranged slightly downstream of the yarn accumulating roller 21.
  • the downstream guide 26 regulates a path of the spun yarn 10 swung around by the rotating yarn hooking member 22.
  • the downstream guide 26 stabilizes the traveling path of the spun yarn 10 located downstream of the yarn accumulating roller 21.
  • the yarn monitoring device 52 is arranged on a front side (operator passage side) of the housing 6 of the spinning machine 1, and at a position between the pneumatic spinning device 9 and the yarn accumulating device 12.
  • the spun yarn 10 spun by the pneumatic spinning device 9 is passed through the yarn monitoring device 52 before being wound by the yarn accumulating device 12.
  • the yarn monitoring device 52 monitors abnormality in the thickness of the spun yarn 10 and/or presence or absence of foreign substances contained in the spun yarn 10. When a yarn defect of the spun yarn 10 is detected, the yarn monitoring device 52 outputs a yarn defect detection signal to the unit controller adapted to control the spinning unit 2, and the like.
  • a cutter 57 adapted to cut the spun yarn 10 when the yarn defect is detected is arranged upstream of the yarn monitoring device 52.
  • the cutter 57 may be omitted, and the spun yarn 10 may be cut by stopping the supply of air to the pneumatic spinning device 9.
  • the waxing device 14 is arranged downstream of the yarn accumulating device 12.
  • the waxing device 14 applies wax to the spun yarn 10 traveling from the yarn accumulating device 12 toward the winding device 13.
  • the winding device 13 includes a cradle arm 71, a winding drum 72, and a traverse device 75.
  • the cradle arm 71 is supported to be swingable about a shaft 70.
  • the cradle arm 71 rotatably holds the package 45.
  • a bobbin holder (not illustrated) adapted to rotatably hold a bobbin 48 for winding the spun yarn 10 is arranged in the cradle arm 71.
  • the winding drum 72 is adapted to rotatably drive the package 45 while making contact with an outer peripheral surface of the bobbin 48 or an outer peripheral surface of the package 45.
  • the traverse device 75 includes a traverse guide 76 that can be engaged with the spun yarn 10.
  • the winding device 13 drives the winding drum 72 with a motor (not illustrated) while reciprocating the traverse guide 76 by driving means (not illustrated).
  • a traverse guide 76 of the traverse device 75 may be commonly driven in each spinning unit 2 by a common shaft for the plurality of the spinning units 2.
  • a rail 41 is provided along the direction in which the spinning units 2 are arranged.
  • the yarn joining cart 3 travels on the rail 41 with wheels 42.
  • the yarn joining cart 3 includes a splicer 43, a suction pipe 44, and a suction mouth 46.
  • the yarn joining cart 3 travels along the rail 41 to the relevant spinning unit 2 and stops.
  • the suction pipe 44 sucks and catches a yarn end fed from the pneumatic spinning device 9 while being swung vertically with a shaft as a center, and guides the yarn end to the splicer 43.
  • the suction mouth 46 sucks and catches a yarn end from the package 45 supported by the winding device 13 while being swung vertically with a shaft as a center, and guides the yarn end to the splicer 43.
  • the splicer 43 carries out the yarn joining operation of the guided yarn ends.
  • the doffing cart 4 includes a doffing device 61.
  • the doffing device 61 includes a cradle operation arm 90, a suction pipe 88, and a bunch winding arm 91. After the package 45 is fully wound at a spinning unit 2, the doffing cart 4 travels to the relevant spinning unit 2 on a traveling path 86 formed in the housing 6, and stops.
  • the cradle operation arm 90 operates the cradle arm 71 of the winding device 13.
  • the suction pipe 88 can be extended, and the suction pipe 88 sucks and catches the yarn end discharged from the pneumatic spinning device 9 and guides the yarn end to an empty bobbin 48 attached to the winding device 13.
  • the bunch winding arm 91 fixes the spun yarn 10 to the bobbin 48 by straight winding of the spun yarn 10 around the bobbin 48.
  • the suction pipe 44 includes a pipe swinging portion 44a and a pipe fixing portion 44b.
  • the pipe fixing portion 44b is fixed by a supporting portion 47b with respect to a housing 47 of the yarn joining cart 3.
  • the pipe swinging portion 44a is swingably supported by a supporting portion 47a with respect to the housing 47 of the yarn joining cart 3.
  • the pipe swinging portion 44a is driven by a motor 49 to swing with respect to the housing 47.
  • a gear 44g fixed to an outer peripheral surface of the pipe swinging portion 44a and a gear 49g fixed to a drive shaft of the motor 49 are meshed.
  • the pipe swinging portion 44a is swung when the gear 49g of the motor 49 is rotated.
  • the pipe swinging portion 44a swings with an axis line direction of the pipe of the portion supported by the supporting portion 47a as an axis.
  • the pipe swinging portion 44a is swingably connected with respect to the pipe fixing portion 44b.
  • a nozzle 44c that sucks the spun yarn 10 fed from the pneumatic spinning device 9 is arranged at an end on a side opposite to the side connected to the pipe fixing portion 44b in the pipe swinging portion 44a.
  • An end on a side opposite to the side connected to the pipe swinging portion 44a in the pipe fixing portion 44b is connected with an air suction source adapted to generate a suction flow.
  • the reflective sensor 100 is attached to the pipe fixing portion 44b.
  • the reflective sensor 100 detects the spun yarn 10 passing through the suction pipe 44.
  • the pipe fixing portion 44b includes a curved part R.
  • the reflective sensor 100 is attached to a wall in proximity to the curved part R in the pipe fixing portion 44b, the wall being on an inner side of a corner of the curved part R.
  • the reflective sensor 100 is attached to an attachment pipe 110 arranged at an intermediate portion of the pipe fixing portion 44b.
  • An inner diameter of the pipe fixing portion 44b and an inner diameter of the attachment pipe 110 substantially coincide with each other.
  • the reflective sensor 100 is attached to the attachment pipe 110, but the reflective sensor 100 may be directly attached to the pipe fixing portion 44b without arranging the attachment pipe 110.
  • the attachment pipe 110 is formed with a hole 110a.
  • a sensor surface 100a of the reflective sensor 100 faces a space in the attachment pipe 110 through the hole 110a.
  • the sensor surface 100a of the reflective sensor 100 is desirably not projected from an inner peripheral surface of the attachment pipe 110.
  • the reflective sensor 100 emits light from the sensor surface 100a, and detects the light reflected by the spun yarn 10 passing through the pipe fixing portion 44b (through the attachment pipe 110) with the sensor surface 100a. If the pipe fixing portion 44b is curved, the spun yarn 10 passing through the pipe fixing portion 44b moves along the inner peripheral surface on the inner side of the corner of the curved part R. Thus, by arranging the reflective sensor 100 on the inner side of the corner of the curved part R, the distance between the sensor surface 100a of the reflective sensor 100 and the spun yarn 10 passing through the pipe fixing portion 44b can be reduced. The detection accuracy of the spun yarn 10 by the reflective sensor 100 is thereby improved.
  • a hole 110b is formed at a position facing the sensor surface 100a in the attachment pipe 110.
  • the light that is not reflected by the spun yarn 10 of the light emitted from the sensor surface 100a is emitted to the outside of the attachment pipe 110 from the hole 110b.
  • a reflecting section 120 is attached to the outer peripheral surface of the attachment pipe 110 by a fixing section 121.
  • the reflecting section 120 is a bent plate-like member which extends to a position facing the hole 110b of the attachment pipe 110.
  • the reflecting section 120 has an inclined surface 120a at a position facing the hole 110b.
  • the inclined surface 120a is inclined with respect to the axis of light emitted from the sensor surface 100a of the reflective sensor 100.
  • the inclined surface 120a reflects the light emitted from the reflective sensor 100 in a direction different from the sensor surface 100a of the reflective sensor 100.
  • the reflecting section reflects light emitted from the reflective sensor in a direction different from a direction into which the reflective sensor is directed, or the reflecting section reflects light emitted from the reflective sensor substantially away from the reflective sensor.
  • the reflective sensor 100 detects whether or not the yarn end fed from the pneumatic spinning device 9 is sucked by the suction pipe 44. In other words, the reflective sensor 100 detects the presence or absence of the spun yarn 10 in the suction pipe 44.
  • the spun yarn 10 When the spun yarn 10 is being sucked by the suction pipe 44, a part of the light emitted from the sensor surface 100a of the reflective sensor 100 is reflected by the spun yarn 10 and received by the sensor surface 100a.
  • the light not reflected by the spun yarn 10 of the light emitted from the sensor surface 100a of the reflective sensor 100 is emitted to the outside of the attachment pipe 110 through the hole 110b, and enters the inclined surface 120a of the reflecting section 120.
  • the light that entered the reflecting section 120 is reflected in a direction (different direction) different from the sensor surface 100a of the reflective sensor 100.
  • the spun yarn 10 When the spun yarn 10 is not successfully sucked by the suction pipe 44, the spun yarn 10 does not pass through the suction pipe 44. Thus, the light emitted from the sensor surface 100a of the reflective sensor 100 is emitted to the outside of the attachment pipe 110 through the hole 110b, and enters the inclined surface 120a of the reflecting section 120. The light that entered the reflecting section 120 is reflected in the direction different from the sensor surface 100a of the reflective sensor 100. If the spun yarn 10 is not detected by the reflective sensor 100, the yarn joining cart 3 may repeat the sucking operation (catching operation) of the spun yarn 10 by the suction pipe 44 for a predetermined number of times.
  • a yarn catching device of the present embodiment is configured by the suction pipe 44, the reflective sensor 100, and the reflecting section 120, which are described above.
  • FIG. 4 illustrates an example of reflecting the light that entered the inclined surface 120a toward the advancing direction of the spun yarn 10, but the direction of reflecting the light is not limited as long as the light is reflected in the direction different from the reflective sensor 100.
  • the present embodiment is configured as described above, and the light emitted from the sensor surface 100a of the reflective sensor 100 is reflected in the direction different from the reflective sensor 100 by the inclined surface 120a of the reflecting section 120.
  • the reflective sensor 100 can suitably detect the light reflected by the spun yarn 10, and can reliably detect the presence or absence of the spun yarn 10 sucked by the suction pipe 44.
  • the light reflected at a portion other than by the spun yarn 10 is suppressed from being detected by the reflective sensor 100, and only the light reflected by the spun yarn 10 can be detected by the reflective sensor 100.
  • the spun yarn 10 can be suitably detected even if the sensor sensitivity of the reflective sensor 100 is improved by strengthening the emitted light, and the like.
  • the hole 110b is formed at the portion facing the reflective sensor 100 in the attachment pipe 110.
  • the light emitted from the sensor surface 100a of the reflective sensor 100 is emitted to the outside of the attachment pipe 110 through the hole 110b.
  • the degree of freedom in the position of installing the reflecting section 120 can be increased without being restricted by the thickness of the attachment pipe 110.
  • the light reflected by the reflecting section 120 is less likely to enter the sensor surface 100a of the reflective sensor 100 again through the hole 110b of the attachment pipe 110.
  • the reflective sensor 100 can suitably detect the light reflected by the spun yarn 10.
  • the reflecting section 120 has the inclined surface 120a, the light emitted from the sensor surface 100a of the reflective sensor 100 can be easily reflected in the direction different from the reflective sensor 100.
  • other members can be arranged without taking into consideration the reflection of the light emitted from the reflective sensor 100 on the back side of the reflecting section 120 (opposite side with respect to the reflective sensor 100 side in the reflecting section 120).
  • the reflecting section is arranged such that the light reflected by the reflecting section enters the reflective sensor 100, the influence of the reflected light is small if the distance between the reflecting section and the reflective sensor 100 is small.
  • the reflecting section and the reflective sensor 100 need to be arranged spaced apart, and hence the detection mechanism becomes large.
  • the reflective sensor 100 and the reflecting section 120 do not need to be arranged spaced apart and the detection mechanism can be miniaturized.
  • a reflecting section 120A is attached to the attachment pipe 110 by a connection pipe 122.
  • One end of the connection pipe 122 is connected to an edge of the hole 110b.
  • the other end of the connection pipe 122 is attached with the reflecting section 120A.
  • the connection pipe 122 extends along an axis line direction of the light emitted from the sensor surface 100a of the reflective sensor 100.
  • the reflecting section 120A and the connection pipe 122 are connected to each other so that air does not leak from the connecting portion.
  • the connection pipe 122 and the attachment pipe 110 are connected to each other so that air does not leak from the connecting portion. Thus, the air does not enter the attachment pipe 110 from the hole 110b formed in the attachment pipe 110.
  • the reflecting section 120A has an inclined surface 120a at a position facing the hole 110b.
  • the inclined surface 120a is inclined with respect to the axis of light emitted from the sensor surface 100a of the reflective sensor 100.
  • the inclined surface 120a reflects the light emitted from the reflective sensor 100 in the direction different from the sensor surface 100a of the reflective sensor 100.
  • the yarn catching device of the present alternative embodiment is configured by the suction pipe 44, the reflective sensor 100, and the reflecting section 120A, which are described above.
  • the light emitted from the sensor surface 100a of the reflective sensor 100 is reflected in the direction different from the reflective sensor 100 by the inclined surface 120a of the reflecting section 120A.
  • the reflective sensor 100 can suitably detect the light reflected by the spun yarn 10, and can reliably detect the presence or absence of the spun yarn 10 sucked by the suction pipe 44.
  • the reflecting section 120A Since the reflecting section 120A is attached to the attachment pipe 110 by way of the connection pipe 122, the reflecting section 120A is arranged at a position projecting out toward the outer side from the attachment pipe 110. Thus, the distance between the sensor surface 100a of the reflective sensor 100 and the inclined surface 120a of the reflecting section 120A is increased, whereby the light reflected by the inclined surface 120a can be weakened. Thus, the light is weak even when the light reflected by the inclined surface 120a enters the sensor surface 100a of the reflective sensor 100 after being reflected over a plurality of times, and hence the light reflected by the spun yarn 10 can be suitably detected by the reflective sensor 100.
  • connection pipe 122 One end of the connection pipe 122 is connected to the edge of the hole 110b of the attachment pipe 110, and the other end of the connection pipe 122 is attached with the reflecting section 120A.
  • the air does not enter the attachment pipe 110 from the hole 110b formed in the attachment pipe 110, and the suction force at the time of sucking the spun yarn 10 is not lowered.
  • a reflecting section 120B is fitted to the hole 110b of the attachment pipe 110.
  • the reflecting section 120B is made of a material having elasticity such as rubber, by way of example.
  • the reflecting section 120B includes a main body portion 120b and an inserting portion 120c.
  • the main body portion 120b is formed in a plate shape, and covers the hole 110b of the attachment pipe 110 from the outer side.
  • the inserting portion 120c is formed to an annular shape, and is projected out toward the reflective sensor 100 from the inner surface of the main body portion 120b (surface facing the reflective sensor 100 of the plurality of surfaces of the main body portion 120b) .
  • a diameter on an outer peripheral side of the inserting portion 120c substantially coincides with a diameter of the hole 110b of the attachment pipe 110.
  • the inserting portion 120c is removably inserted to the hole 110b.
  • the main body portion 120b of the reflecting section 120 has an inclined surface 120d at a position facing the hole 110a of the reflective sensor 100.
  • the inclined surface 120d projects out in a convex form toward the sensor surface 100a of the reflective sensor 100.
  • the inclined surface 120d is inclined with respect to the axis of the light emitted from the sensor surface 100a of the reflective sensor 100.
  • the light that entered the inclined surface 120d is reflected to diffuse radially since the inclined surface 120d is projected out in a convex form.
  • the yarn catching device of the present alternative embodiment is configured by the suction pipe 44, the reflective sensor 100, and the reflecting section 120B, which are described above.
  • the light emitted from the sensor surface 100a of the reflective sensor 100 is reflected to diffuse in the direction different from the reflective sensor 100 by the inclined surface 120d of the reflecting section 120B. Since the inclined surface 120d is projected out in a convex form, the light emitted from the sensor surface 100a of the reflective sensor 100 can be easily reflected in the direction different from the reflective sensor 100. Thus, the reflected light reflected by the inclined surface 120d does not directly enter the sensor surface 100a of the reflective sensor 100. Therefore, the reflective sensor 100 can suitably detect the light reflected by the spun yarn 10, and can reliably detect the presence or absence of the spun yarn 10 sucked by the suction pipe 44.
  • the reflecting section 120B is removably attached with respect to the attachment pipe 110.
  • the maintenance of the sensor surface 100a and the like of the reflective sensor 100 in the attachment pipe 110 can be easily carried out by detaching the reflecting section 120B.
  • the inclined surface 120d is formed by one projection, but the inclined surface 120d having a concave-convex form may be formed by a plurality of projections.
  • the present invention is not limited to the above embodiment.
  • the reflective sensor 100 is arranged in proximity to the curved part R of the suction pipe 44, but the position of arranging the reflective sensor 100 is not limited thereto.
  • the reflective sensor 100 is arranged in the suction pipe 44 of the yarn joining cart 3, but the reflective sensor 100 may be arranged in the suction pipe 88 of the doffing cart 4 with the configuration described above.
  • the reflective sensor 100 having the above configuration may be arranged in both the suction pipe 44 of the yarn joining cart 3 and the suction pipe 88 of the doffing cart 4.
  • a mechanism for carrying out the yarn joining operation of the suction pipe 44, the splicer 43, and the like arranged in the yarn joining cart 3 may be arranged in each of the spinning units 2.
  • the inclined surface 120a (see FIG. 4 ) of the reflecting section 120 in the embodiment and the inclined surface 120a (see FIG. 5 ) of the reflecting section 120A in the first alternative embodiment are flat surfaces in FIG. 4 and FIG. 5 , but the inclined surface is not limited to a flat surface.
  • the inclined surface 120a may be curved as long as the light that entered the inclined surface 120a can be reflected in a direction other than the sensor surface 100a of the reflective sensor 100.
  • the reflecting section 120 in the embodiment may be removably attached with respect to the attachment pipe 110.
  • the reflecting section 120A in the first alternative embodiment may be removably attached with respect to the connection pipe 122. In such cases, the maintenance of the sensor surface 100a and the like of the reflective sensor 100 in the attachment pipe 110 can be easily carried out by detaching the reflecting sections 120 and 120A.
  • the reflective sensor 100, and the like are attached to the yarn joining cart 3 arranged in the spinning machine 1 with the configuration described above, but the reflective sensor 100 and the like may be attached to a device other than the spinning machine 1 with the configuration described above.
  • the reflective sensor 100 and the like may be attached to such devices with the configuration described above.

Claims (11)

  1. Dispositif de saisie de fil, comprenant:
    un tuyau d'aspiration (44, 88) adapté pour aspirer un fil; et
    un capteur réfléchissant (100) adapté pour détecter le fil passant par le tuyau d'aspiration (44, 88),
    caractérisé par le fait que
    un segment réfléchissant (120, 120A, 120B) adapté pour réfléchir la lumière émise par le capteur réfléchissant (100) dans une direction différente du capteur réfléchissant (100) est disposé dans une partie tournée vers le capteur réfléchissant (100) avec un trajet du fil dans le tuyau d'aspiration (44, 88) entre eux.
  2. Dispositif de saisie de fil selon la revendication 1, dans lequel le segment réfléchissant (120, 120A, 120B) est disposé en une position faisant saillie vers le côté extérieur du tube d'aspiration (44, 88) depuis le tuyau d'aspiration (44, 88).
  3. Dispositif de saisie de fil selon la revendication 2, dans lequel
    le segment réfléchissant (120, 120A, 120B) est disposé sur le côté extérieur du tuyau d'aspiration (44, 88), et
    un trou (110b) est formé dans une paroi du tuyau d'aspiration (44, 88) entre le segment réfléchissant (120, 120A, 120B) et le capteur réfléchissant (100).
  4. Dispositif de saisie de fil selon la revendication 3, comprenant par ailleurs un tuyau de raccordement (122) adapté pour connecter le segment réfléchissant (120A) et une surface périphérique extérieure du tuyau d'aspiration (44, 88).
  5. Dispositif de saisie de fil selon l'une quelconque des revendications 1 à 4, dans lequel le segment réfléchissant (120, 120A, 120B) présente une surface inclinée (120a, 120d) inclinée par rapport à un axe de la lumière émise par le capteur réfléchissant (100).
  6. Dispositif de saisie de fil selon l'une quelconque des revendications 1. à 5, dans lequel le segment réfléchissant (120B) présente une surface inclinée (120d) présentant une forme convexe faisant saillie vers le capteur réfléchissant (100).
  7. Dispositif de saisie de fil selon l'une quelconque des revendications 1 à 6, dans lequel le segment réfléchissant (120, 120A, 120B) est fixé de manière amovible par rapport au tuyau d'aspiration (44, 88).
  8. Dispositif de saisie de fil selon l'une quelconque des revendications 1 à 7, dans lequel le segment réfléchissant (120, 120A, 120B) est adapté pour réfléchir la lumière émise par le capteur réfléchissant (100) dans une direction différente d'une direction dans laquelle est orienté le capteur réfléchissant (100).
  9. Dispositif de saisie de fil selon l'une quelconque des revendications 1 à 7, dans lequel le segment réfléchissant (120, 120A, 120B) est adapté pour réfléchir la lumière émise par le capteur réfléchissant (100) en s'éloignant substantiellement du capteur réfléchissant (100).
  10. Machine d'enroulement de fil (1), comprenant:
    le dispositif de saisie de fil selon l'une quelconque des revendications 1 à 9; et
    une unité d'enroulement de fil (2) comportant un dispositif d'étirage (7) adapté pour étirer un faisceau de fibres, un dispositif de filage (9) adapté pour appliquer des torsions au faisceau de fibres étiré par le dispositif d'étirage (7) pour produire un fil filé, un dispositif d'enroulement (13) adapté pour enrouler le fil filé produit par le dispositif de filage (9) pour former un paquet,
    dans laquelle le dispositif de saisie de fil saisit le fil filé produit par le dispositif de filage (9).
  11. Machine d'enroulement de fil (1) selon la revendication 10, comprenant par ailleurs un chariot de fonctionnement (3, 4) sur lequel est disposé le dispositif de saisie de fil,
    dans laquelle est disposée une pluralité d'unités d'enroulement de fil (2), et
    le chariot de fonctionnement (3, 4) se déplace par rapport à la pluralité d'unités d'enroulement de fil (2) et saisit le fil filé à chacune des unités d'enroulement de fil (2).
EP15153037.5A 2014-02-10 2015-01-29 Dispositif d'épissage de fil et machine d'enroulement de fils Not-in-force EP2905248B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014023065A JP2015148035A (ja) 2014-02-10 2014-02-10 糸捕捉装置、及び、糸巻取機

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EP2905248A1 EP2905248A1 (fr) 2015-08-12
EP2905248B1 true EP2905248B1 (fr) 2017-04-19

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EP (1) EP2905248B1 (fr)
JP (1) JP2015148035A (fr)
CN (1) CN104828649B (fr)

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Publication number Priority date Publication date Assignee Title
JP2017088325A (ja) * 2015-11-11 2017-05-25 村田機械株式会社 糸引出装置及び糸巻取装置
ITUA20162101A1 (it) * 2016-03-30 2017-09-30 Savio Macch Tessili Spa Apparecchiatura per catturare il bandolo di una spola
DE102016115731A1 (de) * 2016-08-24 2018-03-01 Saurer Germany Gmbh & Co. Kg Saugvorrichtung zum Einsaugen eines Fadenendes eines auf einer Auflaufspule aufgespulten Fadens und Verfahren zum sensorischen Überwachen eines Saugkanalabschnitts der Saugvorrichtung
JP2018065659A (ja) * 2016-10-19 2018-04-26 村田機械株式会社 糸巻取装置及び糸継方法
DE102018125327A1 (de) * 2018-10-12 2020-04-16 Saurer Spinning Solutions Gmbh & Co. Kg Fadenrohr für eine Auflaufspulen herstellende Textilmaschine

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JPH05246626A (ja) * 1992-03-05 1993-09-24 Murata Mach Ltd 巻取ユニットの糸継制御方法
DE4308058A1 (de) * 1993-03-13 1994-09-15 Schlafhorst & Co W Vorrichtung zum Erkennen eines Fadens in einem luftdurchströmten Kanal
JPH0931769A (ja) * 1995-07-13 1997-02-04 Toyota Autom Loom Works Ltd 糸継ぎ時におけるパッケージからの糸端引出し方法及び装置
DE19622495C2 (de) * 1996-06-05 2003-12-18 Ifm Electronic Gmbh Fadenerkennungsgerät
DE19650933A1 (de) * 1996-12-07 1998-06-10 Schlafhorst & Co W Spulaggregat einer Kreuzspulen herstellenden Textilmaschine
DE102004003174A1 (de) * 2004-01-22 2005-08-11 Saurer Gmbh & Co. Kg Vorrichtung zum Erkennen eines Fadens
DE602007011311D1 (de) * 2006-11-10 2011-01-27 Iro Ab Optoelektrischer garnsensor
CN103572440A (zh) * 2012-07-19 2014-02-12 乌斯特技术股份公司 用于纱线检测的反射式光电结构及方法

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JP2015148035A (ja) 2015-08-20
CN104828649B (zh) 2019-03-08
CN104828649A (zh) 2015-08-12

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