EP2573226B1 - Draft device and spinning machine - Google Patents
Draft device and spinning machine Download PDFInfo
- Publication number
- EP2573226B1 EP2573226B1 EP12174569.9A EP12174569A EP2573226B1 EP 2573226 B1 EP2573226 B1 EP 2573226B1 EP 12174569 A EP12174569 A EP 12174569A EP 2573226 B1 EP2573226 B1 EP 2573226B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- draft
- cleaning
- draft device
- bottom 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.)
- Not-in-force
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
- D01H5/64—Rollers or aprons with cleaning surfaces
Definitions
- the present invention relates to a configuration for cleaning a draft roller used in a draft device.
- a spinning machine includes a draft device adapted to draft a fiber bundle.
- the draft device includes a plurality of draft roller pairs, each of which includes a top roller and a bottom roller.
- the draft device is adapted to draft the fiber bundle by rotating the draft roller pairs at different speeds.
- the cleaning device of the draft roller disclosed in Japanese Unexamined Patent Publication No. 2009-13550 includes a cleaning belt having a cleaning surface that makes contact with the peripheral surface of the draft roller to clean the surface.
- gear teeth of a gear member provided on a roller adapted to support the cleaning belt is fed by one tooth every time a rotation protrusion provided on a middle roller, which is one of the draft rollers, is rotated once.
- the cleaning belt is thereby intermittently fed.
- a scraper member is provided in a cleaning device of a draft roller disclosed in Japanese Unexamined Patent Publication No. 2006-22443 .
- the scraper member has an acute edge. The acute edge is made to contact with an outer peripheral surface of the draft roller to scrape and clean cotton honeydew, oil solution, and the like attached to the outer peripheral surface of the roller.
- a suction member is provided below the scraper member. Scraped fly waste and the like are removed by a sucking operation of the suction member.
- a cleaning belt is arranged below a third bottom roller, which is one of the draft rollers.
- the cleaning belt rotates by a frictional force between the cleaning belt and the third bottom roller.
- the fly waste attached to a surface of the third bottom roller is thereby removed by the cleaning belt.
- Japanese Unexamined Patent Publication No. 2009-13550 since the draft roller is cleaned with the intermittently fed cleaning belt, an effect of removing the fibers may be considered to be high.
- Japanese Unexamined Patent Publication No. 2009-13550 does not disclose how the middle roller adapted to intermittently feed the cleaning belt is rotated. If the middle roller adapted to the drive the cleaning belt is rotated accompanying a rotation of a counterpart roller, slipping of the rollers may be induced from a driving load of the cleaning belt, which may influence the rotation of the middle roller and lower quality of the drafting.
- the fibers attached to the outer peripheral surface of the roller can be effectively scraped by the stationary scraper member.
- the foreign matters may accumulate on the scraper member and may not be sufficiently removed even by the suction member. As a result, a cleaning effect may not be stably obtained.
- An object of the present invention is to provide a draft device capable of effectively cleaning fibers attached to a peripheral surface of a draft roller without influencing drafting of the fiber bundle.
- a draft device includes a plurality of draft roller pairs, each of the draft roller pairs including a top roller and a bottom roller arranged to face the top roller, the draft device being adapted to draft a fiber bundle by the draft roller pairs by driving the bottom rollers.
- the draft device includes a cleaning member and an intermittent feeding section.
- the cleaning member has a cleaning surface adapted to make contact with the bottom roller to clean such bottom roller.
- the intermittent feeding section is adapted to intermittently feed the cleaning member by receiving power from a driving source adapted to drive at least one of the bottom rollers.
- the cleaning member adapted to clean the bottom roller can be intermittently fed by reliably receiving the power of the driving source adapted to drive the bottom roller.
- the fibers attached to the bottom roller can be effectively cleaned without influencing the drafting of the fiber bundle. Since a special driving source for intermittent feeding is not required to be provided, a cost of the entire draft device can be suppressed.
- the cleaning member is preferably a flexible endless belt. Accordingly, the cleaning effect can be improved by continuously cleaning the bottom roller. Since a wide cleaning surface can be ensured, the cleaning effect is less likely to be lowered even if the fibers accumulate on the cleaning member.
- the above draft device preferably includes an urging member adapted to urge the endless belt against the bottom roller. Accordingly, since the cleaning surface of the cleaning member can be stably pressed against the peripheral surface of the bottom roller, the cleaning can be satisfactorily carried out.
- the cleaning member can also easily respond to changes in a position of the bottom roller.
- the above draft device further includes an intermittent driving roller.
- the endless belt is wound around the intermittent driving roller.
- the intermittent driving roller is adapted to intermittently feed the endless belt by rotating intermittently.
- a plurality of recesses are formed on a peripheral surface of the intermittent driving roller.
- the endless belt can satisfactorily follow the intermittent driving roller that repeatedly stops and rotates.
- the endless belt thus can be reliably fed intermittently.
- the above draft device includes two belt-supporting rollers arranged at an interval.
- the endless belt is wound around the two belt-supporting rollers such that the endless belt is arranged to be elliptical.
- the cleaning member can be made small. Therefore, the cleaning member can be easily arranged also in a narrow space at a periphery of the bottom rollers. Two or more bottom rollers can be easily cleaned with one endless belt.
- the draft device includes at least three draft roller pairs arranged in a travelling direction of the fiber bundle.
- the at least three draft roller pairs are a front roller pair, a middle roller pair, and a third roller pair arranged in this order from downstream in the travelling direction of the fiber bundle.
- An apron belt is respectively provided for the top roller and the bottom roller of the middle roller pair.
- the cleaning surface of the endless belt as the cleaning member is provided to make contact with the bottom roller of the third roller pair.
- a distance between the draft rollers arranged upstream in the travelling direction of the fiber bundle is generally longer than the distance between the downstream draft rollers. Therefore, the fibers particularly easily wind around the third roller, which is the draft roller located immediately upstream of the draft roller pair provided with the apron belt. In the above configuration, since the cleaning member cleans the bottom roller of the third roller pair, the fibers can be effectively prevented from winding around the bottom roller.
- the draft roller pairs are arranged in a direction substantially parallel to the travelling direction of the fiber bundle.
- the driving section is a motor adapted to drive the bottom roller located most upstream in the travelling direction of the fiber bundle.
- the intermittent feeding section is adapted to intermittently feed the cleaning member by receiving power from the motor. Accordingly, since the power for intermittently feeding the cleaning member can be received at a close position, a drive transmission path can be simplified.
- the intermittent feeding section includes an input rotating body, an output rotating body, a reciprocating arm, an eccentric portion, a coupling member, and a one-way clutch.
- the input rotating body is adapted to receive transmission of power from the driving source.
- the output rotating body is adapted to drive the cleaning member.
- the reciprocating arm is swingably supported.
- the eccentric portion is adapted to integrally rotate with the input rotating body.
- the coupling member is adapted to couple the eccentric portion and the reciprocating arm.
- the one-way clutch is provided between the reciprocating arm and the output rotating body. Accordingly, since the endless belt can be intermittently fed in one direction, the fibers attached to the bottom roller can be reliably cleaned.
- the above draft device further includes a draft device main body and a cleaning unit.
- the draft device main body is adapted to support the draft roller pairs.
- the cleaning unit is adapted to support the cleaning member.
- the cleaning unit is provided detachably with respect to the draft device main body. Accordingly, a maintenance operation such as changing the cleaning member can be easily performed.
- the intermittent feeding section includes an input rotating body, an output rotating body, a reciprocating arm, an eccentric portion, a coupling member, and a one-way clutch.
- the input rotating body is adapted to receive transmission of power from the driving source.
- the output rotating body is adapted to drive the cleaning member.
- the reciprocating arm is swingably supported.
- the eccentric portion is adapted to integrally rotate with the input rotating body.
- the coupling member is adapted to couple the eccentric portion and the reciprocating arm.
- the one-way clutch is provided between the reciprocating arm and the output rotating body.
- the cleaning unit includes at least the output rotating body, the reciprocating arm, and the one-way clutch.
- the cleaning member and a component group associated with the cleaning member can be collectively handled integrally as a cleaning unit.
- the maintenance operation can be efficiently performed.
- a spinning machine includes a draft device, a spinning device, and a winding device.
- the spinning device is adapted to produce a spun yarn by spinning the fiber bundle drafted by the draft device using airflow.
- the winding device is adapted to wind the spun yarn produced by the spinning device into a package.
- the fiber bundle is drafted with the cleaned bottom roller, and the spun yarn produced from the fiber bundle is wound into the package, a high quality package can be obtained. Since accumulation of the fibers in the draft device can be suppressed, an operation of the spinning machine is not stopped due to excessive accumulation of the fibers in the draft device, or the like. Therefore, operation efficiency of the spinning machine can be improved.
- a fine spinning machine (spinning machine) according to one embodiment of the present invention will be described with reference to the drawings.
- a fine spinning machine 1 as the spinning machine illustrated in FIG. 1 includes a plurality of spinning units 2 arranged in line.
- the fine spinning machine 1 includes a yarn joining cart 3, a blower box 80, and a motor box 5.
- Each spinning unit 2 includes a draft device 7, a spinning device 9, a yarn slack eliminating device (yarn accumulating device) 12, and a winding device 13, arranged in this order from upstream to downstream.
- "Upstream” and “downstream” respectively refer to upstream and downstream in a travelling direction of a fiber bundle and a spun yarn at the time of spinning.
- Each spinning unit 2 is adapted to spin a fiber bundle 8 fed from the draft device 7 by the spinning device 9 to produce a spun yarn 10, and the spun yarn 10 is wound into a package 45 by the winding device 13.
- the draft device 7 is arranged in proximity to an upper end of a frame 6 of the fine spinning machine 1.
- the draft device 7 drafts (stretches) the fiber bundle (a sliver) 8 supplied from a sliver case (not illustrated) through a sliver guide (not illustrated) to a predetermined width.
- the fiber bundle 8 drafted by the draft device 7 is supplied to the spinning device 9.
- the spinning device 9 twists the fiber bundle 8 supplied from the draft device 7 to produce the spun yarn 10.
- an air-jet spinning device which uses whirling airflow to twist the fiber bundle 8 is adopted as the spinning device 9.
- the spinning device 9 includes a nozzle holder 63, a hollow guide shaft body 23, and a fiber guide (fiber guiding section) 22.
- a spinning chamber 26 is formed between the nozzle holder 63 and the hollow guide shaft body 23.
- the nozzle holder 63 is provided with an air ejecting nozzle 27 for ejecting air into the spinning chamber 26.
- the fiber guide 22 is provided with an introducing port 21 for introducing the fiber bundle 8 into the spinning chamber 26.
- the air ejecting nozzle 27 is configured to eject the air into the spinning chamber 26 to generate whirling airflow.
- the fiber bundle 8 supplied from the draft device 7 is guided into the spinning chamber 26 by the fiber guide 22 having the introducing port 21.
- fibers of the fiber bundle 8 are swung around the hollow guide shaft body 23 by the whirling airflow, to apply the twists to the fiber bundle 8, and the spun yarn 10 is produced.
- the twisted spun yarn 10 is passed through a yarn passage 29 formed at an axial center of the hollow guide shaft body 23, and fed to an outside of the spinning device 9 from a yarn exit (not illustrated) located downstream of the hollow guide shaft body 23.
- a needle-like guide needle 22a is arranged in the introducing port 21, and a tip of the guide needle 22a is directed towards the spinning chamber 26.
- the fiber bundle 8 introduced from the yarn introducing port 21 is guided into the spinning chamber 26 via the guide needle 22a. Accordingly, a state of the fiber bundle 8 introduced into the spinning chamber 26 can be stabilized. Since the fiber bundle 8 is guided via the guide needle 22a, even if twists are applied to the fibers in the spinning chamber 26, the twists are prevented from being propagated to the upstream of the fiber guide 22. Accordingly, the twists applied by the spinning device 9 are prevented from influencing the draft device 7.
- the yarn accumulating device 12 is arranged downstream of the spinning device 9.
- the yarn accumulating device 12 includes a yarn accumulating roller 14 and an electric motor 25 for rotatably driving the yarn accumulating roller 14.
- the yarn accumulating roller 14 can have a prescribed amount of the spun yarn 10 wound around an outer peripheral surface thereof to temporarily accumulate the spun yarn 10.
- the yarn accumulating roller 14 is rotated at a predetermined rotation speed with the spun yarn 10 wound around the outer peripheral surface of the yarn accumulating roller 14, the yarn accumulating device 12 can pull out the spun yarn 10 from the spinning device 9 at a predetermined speed and transport the spun yarn 10 towards the downstream.
- the winding device 13 includes a cradle arm 71 supported to be swingable about a supporting shaft 73.
- the cradle arm 71 can rotatably support a bobbin 48 for winding the spun yarn 10.
- the winding device 13 includes a winding drum 72 and a traverse device 75.
- the winding drum 72 is adapted to be driven 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 capable of being engaged with the spun yarn 10.
- the winding drum 72 is driven by an electric motor (not illustrated) while reciprocating the traverse guide 76 by a driving unit (not illustrated).
- the winding device 13 rotates the package 45 making contact with the winding drum 72, and the spun yarn 10 is wound into the package 45 while being traversed.
- the yarn joining cart 3 includes a splicer (yarn joining device) 43, a suction pipe 44, and a suction mouth 46.
- a splicer yarn joining device
- the suction pipe 44 sucks and catches a yarn end from the spinning device 9 while being swung vertically with a shaft as the 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 the center, and guides the yarn end to the splicer 43.
- the splicer 43 joins the guided yarn ends.
- a yarn clearer 52 is arranged at a position between the spinning device 9 and the yarn accumulating device 12.
- the spun yarn 10 spun by the spinning device 9 is passed through the yarn clearer 52 before being wound by the yarn accumulating device 12.
- the yarn clearer 52 monitors the travelling spun yarn 10 with a sensor (not illustrated), and when a yarn defect of the spun yarn 10 (a portion in which abnormality is found in thickness or the like of the spun yarn 10, or foreign substances contained the spun yarn 10) is detected, the yarn clearer 52 transmits a yarn defect detection signal to a unit controller (not illustrated).
- the unit controller Upon receiving the yarn defect detection signal, the unit controller immediately cuts the spun yarn 10 with a cutter 57, stops the draft device 7, the spinning device 9, and the like, and also stops the winding in the winding device 13.
- the unit controller transmits a control signal to the yarn joining cart 3, and the yarn joining cart 3 travels to front of the spinning unit 2.
- the yarn joining cart 3 guides the yarn end from the spinning device 9 and the yarn end from the package 45 to the splicer 43 with the suction pipe 44 and the suction mouth 46, respectively, and carries out a yarn joining operation by the splicer 43. According to such a yarn joining operation, the yarn defect is removed, and the winding of the spun yarn 10 into the package 45 can be resumed.
- the cutter 57 may be omitted, and the spun yarn 10 may be cut as if being torn off by stopping the driving of the draft device 7 while continuing the driving of the winding device 13. Supply of air to the spinning device 9 may be stopped and the spun yarn 10 may be cut by interrupting the production of the spun yarn 10.
- the draft device 7 includes a tubular sliver guide 15 adapted to introduce the fiber bundle 8, and a plurality of draft rollers. Two draft rollers as one set form a draft roller pair.
- the draft device 7 of the present embodiment includes four draft roller pairs, i.e., a back roller pair including draft rollers 16 and 66, a third roller pair including draft rollers 17 and 67, a middle roller pair including draft rollers 19 and 69, and a front roller pair including draft rollers 20 and 70, arranged in this order from the upstream.
- a draft roller on a front side of the fine spinning machine 1 is referred to as a top roller
- a draft roller on a rear side of the fine spinning machine 1 is referred to as a bottom roller.
- the top rollers are, in the order from the upstream, a back top roller 16, a third top roller 17, a middle top roller 19 provided with a rubber apron belt 18, and a front top roller 20.
- the bottom rollers are, in the order from the upstream, a back bottom roller 66, a third bottom roller 67, a middle bottom roller 69 provided with an apron belt 68, and a front bottom roller 70.
- each of the top rollers 16, 17, 19, and 20 is made of an elastic member such as rubber.
- Each of the top rollers 16, 17, 19, and 20 is rotatably supported via a bearing (not illustrated) and the like with an axial line thereof as a center.
- Each of the bottom rollers 66, 67, 69, and 70 is a metal roller, and is rotatably driven with an axial line thereof as the center. In each draft roller pair, the top roller and the bottom roller are arranged to face one another.
- the draft device 7 includes an urging means (not illustrated) adapted to urge the top rollers 16, 17, 19, and 20 towards the bottom rollers 66, 67, 69, and 70.
- the outer peripheral surface of the top rollers 16, 17, 19, and 20 thus elastically make contact with the outer peripheral surface of the bottom rollers 66, 67, 69, and 70, respectively.
- the top rollers 16, 17, 19, and 20 also rotate accompanying the rotation of the bottom rollers 66, 67, 69, and 70.
- the draft device 7 nips (sandwiches) the fiber bundle 8 between the rotating top rollers 16, 17, 19, and 20 and the bottom rollers 66, 67, 69, and 70, and transports the fiber bundle 8 towards the downstream.
- the rotation speed of the downstream draft roller pair is faster. Therefore, the fiber bundle 8 is stretched (drafted) while being transported between the draft roller pair and the draft roller pair, and a width of the fiber bundle 8 becomes narrower towards the downstream.
- the fiber bundle 8 drafted to a desired width can be supplied to the spinning device 9. Accordingly, the spun yarn 10 of a desired yarn count (thickness) can be spun by the spinning device 9.
- the draft device 7 includes a first supporting plate 81 adapted to support the back bottom roller 66 and a second supporting plate 82 adapted to support the third bottom roller 67. Although not illustrated in FIG. 4 , the supporting plates 81 and 82 are attached to the frame 6 of the fine spinning machine 1.
- the back bottom roller 66 is rotatably supported by an upper part of the first supporting plate 81.
- a coupling pulley 83 is fixed to a roller shaft of the back bottom roller 66.
- the coupling pulley 83 can integrally rotate with the back bottom roller 66.
- a cleaning input pulley (an input rotating body) 84 is rotatably supported by the first supporting plate 81.
- the cleaning input pulley 84 is arranged at a position farther than the back bottom roller 66 and at a position closer than a back bottom roller driving motor 91, to be described later, when seen from a travelling path of the fiber bundle 8.
- An eccentric pin (an eccentric portion) 85 protrudes from an end surface of a pulley shaft of the cleaning input pulley 84.
- One end of an elongate link member (a coupling member) 86 is rotatably coupled to the eccentric pin 85.
- the back bottom roller driving motor (a driving source) 91 is arranged below the first supporting plate 81 (a side located away from the travelling path of the fiber bundle 8).
- An output pulley 92 is fixed to an output shaft of the back bottom roller driving motor 91.
- the output pulley 92, the coupling pulley 83, and the cleaning input pulley 84 are configured as pulleys with teeth.
- the three pulleys 92, 83, and 84 are coupled to one another by being wound with a driving belt 93, which is an endless belt with teeth.
- the third bottom roller 67 is rotatably supported by an upper part of the second supporting plate 82 (a portion on a side located close to the travelling path of the fiber bundle 8).
- a coupling pulley 87 is fixed to a roller shaft of the third bottom roller 67.
- the coupling pulley 87 can be integrally rotated with the third bottom roller 67.
- a third bottom roller driving motor 94 is arranged below the second supporting plate 82 (a side located away from the travelling path of the fiber bundle 8).
- An output pulley 95 is fixed to an output shaft of the third bottom roller driving motor 94.
- the output pulley 95 and the coupling pulley 87 are configured as pulleys with teeth.
- the two pulleys 95 and 87 are coupled to one another by being wound with a driving belt 96, which is an endless belt with teeth.
- a plate-shaped cleaning supporting frame 88 is fixed to the first supporting plate 81.
- An attachment hole 89 is formed as a through hole in the cleaning supporting frame 88.
- a protrusion 55 of a housing 31 of a cleaning cassette 30, to be described later, can be inserted into the attachment hole 89.
- the cleaning supporting frame 88 also supports the sliver guide 15 adapted to guide the fiber bundle 8 to the draft device 7.
- the cleaning cassette (a cleaning unit) 30 is arranged to be inserted between the back bottom roller 66 and the third bottom roller 67, which are to be cleaned, and the back bottom roller driving motor 91 and the third bottom roller driving motor 94 adapted to drive the draft rollers 66 and 67, respectively.
- the cleaning cassette 30 includes the housing 31, a swing arm (a reciprocating arm) 32, a driving roller (a belt-supporting roller, an intermittent driving roller, or an output rotating body) 33, a one-way clutch 34, a driven roller supporting arm 35, a driven roller (belt-supporting roller) 36, and a cleaning belt (a cleaning member) 37.
- the housing 31 is made from synthetic resin or metal in an elongate shape when seen in an axial line direction of the draft rollers 16 and 17.
- the housing 31 is formed in a box-shape opened at a portion facing the back bottom roller 66 and the third bottom roller 67.
- the protrusion 55 having a shape substantially corresponding to the attachment hole 89 of the cleaning supporting frame 88 is formed at a bottom of the housing 31.
- the housing 31 (the cleaning cassette 30) can be attached to the cleaning supporting frame 88 by inserting the protrusion 55 into the attachment hole 89.
- a hooking member 60 adapted to fix the housing 31 to the cleaning supporting frame 88 is attached to the housing 31.
- the hooking member 60 includes a sandwiching arm 61, and is configured to sandwich the cleaning supporting frame 88 between the sandwiching arm 61 and the housing 31.
- a claw portion 62 capable of being hooked to an edge of the attachment hole 89 is formed at a tip-end of the sandwiching arm 61.
- An urging spring (not illustrated) adapted to urge the sandwiching arm 61 and the claw portion 62 in a direction of approaching the housing 31 is attached to the hooking member 60.
- FIG. 4 illustrates a state in which the cleaning cassette 30 is installed in the draft device 7.
- the protrusion 55 of the housing 31 is inserted into the attachment hole 89 of the cleaning supporting frame 88.
- the claw portion 62 on a tip-end side of the sandwiching arm 61 of the hooking member 60 is inserted into the attachment hole 89, and the claw portion 62 hooks the cleaning supporting frame 88 by an urging force of the urging spring.
- the cleaning cassette 30 thus can be fixed so as not to move with respect to the cleaning supporting frame 88.
- FIG. 5 illustrates a cross-sectional view of the detached cleaning cassette 30.
- the swing arm 32 is swingably supported by a side surface of the housing 31 (a side surface located in a direction substantially parallel to the travelling direction of the fiber bundle 8) as illustrated in FIG. 4 .
- a tip-end portion of the swing arm 32 is coupled to the eccentric pin 85 via the link member 86.
- a C-shaped recess 56 in which an upper side is opened, is formed in the link member 86 to be coupled with the swing arm 32.
- a coupling pin 58 is fixed to the tip-end of the swing arm 32.
- the swing arm 32 is made from a material capable of being elastically deformed to a certain degree (synthetic resin in the present embodiment).
- the coupling pin 58 is fitted while deforming the recess 56 to couple the link member 86 and the swing arm 32.
- the link member 86 can be detachably provided with respect to the swing arm 32, the cleaning cassette 30 can be easily attached to and detached from the draft device 7.
- the link member 86 When seen from the eccentric pin 85, the link member 86 includes an extended portion 59 formed to further extend from the recess 56. By applying a force with a finger to push down the extended portion 59, the operator can easily remove the coupling pin 58 from the recess 56 and decouple the link member 86 and the swing arm 32.
- the driving roller 33 is rotatably supported by the housing 31 such that an arm axis of the swing arm 32 and the axial line of the driving roller 33 are matched.
- the driving roller 33 has a slightly wider width (length) extending in the roller axis direction than the back bottom roller 66 and the third bottom roller 67.
- axially elongate grooves (recesses) 33a are formed at an equal interval in a peripheral direction on a peripheral surface of the driving roller 33.
- the one-way clutch 34 is interposed between the swing arm 32 and the driving roller 33.
- the one-way clutch 34 transmits a rotation in one direction of the swing arm 32 (specifically, clockwise in FIG. 4 ) to the driving roller 33, and does not transmit a rotation opposite thereto (counterclockwise in FIG. 4 ) to the driving roller 33.
- the driving roller 33 thus can be intermittently driven.
- a driven roller supporting arm 35 is an arm-shaped member formed in an elongate shape.
- a first tip-end of the driven roller supporting arm 35 is swingably supported by the housing 31.
- a portion of a second tip-end of the driven roller supporting arm 35 is arranged to project out from the housing 31.
- An urging spring 38 is a torsion coil spring attached to the driven roller supporting arm 35. The urging spring 38 urges the second tip-end of the driven roller supporting arm 35 in a direction of approaching (direction of rising) towards the third bottom roller 67 by the spring force thereof.
- a contacting surface 35a is formed at a middle portion in a longitudinal direction of the driven roller supporting arm 35.
- the contacting surface 35a pushes an inner peripheral surface of the cleaning belt 37 upward (outside) accompanying the swing of the driven roller supporting arm 35 by an action of the urging spring 38 to push a cleaning surface of the cleaning belt 37 against the back bottom roller 66 and the third bottom roller 67.
- a position where the contacting surface 35a pushes up the cleaning belt 37 is a position located between the back bottom roller 66 and the third bottom roller 67. Therefore, the cleaning belt 37 can be made to contact with the back bottom roller 66 and the third bottom roller 67 at a wide area while being slightly curved in a zigzag manner. The back bottom roller 66 and the third bottom roller 67 thus can be satisfactorily cleaned with the cleaning belt 37.
- a driven roller 36 is rotatably supported by the second tip-end of the driven roller supporting arm 35.
- a diameter of the driven roller 36 is substantially equal to a diameter of the driving roller 33.
- the driven roller 36 has a slightly wider width (length) extending in the roller axis direction than the back bottom roller 66 and the third bottom roller 67.
- the cleaning belt 37 is an endless member having a slightly wider width (length) extending in a roller axis direction than the back bottom roller 66 and the third bottom roller 67.
- the cleaning belt 37 is wound around the driving roller 33 and the driven roller 36 such that the cleaning belt 37 is substantially elliptical in side view.
- the cleaning belt 37 thus has a flat shape substantially parallel to the travelling path of the fiber bundle 8.
- the cleaning belt 37 is flatly supported by two rollers (the driving roller 33 and the driven roller 36), and the cleaning belt 37 can be pushed against both the back bottom roller 66 and the third bottom roller 67 in a balanced manner with the action of the urging spring 38.
- the position of the bottom rollers 66, 67, 69, and/or 70 is sometimes adjusted. According to the present embodiment, even if the back bottom roller 66 and the third bottom roller 67 are displaced in the travelling direction of the fiber bundle 8, the flat-shaped cleaning belt 37 can be stably made in contact and a satisfactory cleaning effect can be exerted.
- the first supporting plate 81, the second supporting plate 82, the back bottom roller driving motor 91, the third bottom roller driving motor 94, the coupling pulleys 83 and 87, the driving belts 93 and 96, and the like configure a draft device main body 7x for supporting and driving the bottom roller adapted to draft the fiber bundle 8 (the back bottom roller 66 and the third bottom roller 67).
- the cleaning input pulley 84, the link member 86, the swing arm 32, the driving roller 33, the one-way clutch 34, and the like configure an intermittent feeding device (intermittent feeding section) 101 adapted to intermittently feed the cleaning belt 37.
- the cleaning input pulley 84 of the intermittent feeding device 101 is mechanically coupled to an output shaft of the back bottom roller driving motor 91 adapted to drive the back bottom roller 66 by the driving belt 93.
- the intermittent feeding device 101 receives power from the driving source of the back bottom roller 66 located most upstream. Since the intermittent feeding device 101 can receive the power for intermittent feeding from a close position, the drive transmission path can be simplified.
- the fiber bundle 8 can be fed to the downstream draft roller pair while drafting the fiber bundle 8 between the two draft roller pairs.
- the cleaning input pulley 84 coupled to the output pulley 92 via the driving belt 93 is rotated. Therefore, the position of the eccentric pin 85 provided on the pulley shaft of the cleaning input pulley 84 is changed, and hence the swing arm 32 coupled to the eccentric pin 85 via the link member 86 is swung. Specifically, the swing arm 32 makes one reciprocating swing within a predetermined angular range every time the cleaning input pulley 84 makes one rotation.
- the one-way clutch 34 transmits the swing to the driving roller 33.
- the one-way clutch 34 shuts the transmission of the swing.
- the driving roller 33 is thus intermittently rotated clockwise in FIG. 4 , and the cleaning belt 37 can be intermittently fed.
- the cleaning belt 37 is intermittently fed as described above while being pushed against the back bottom roller 66 and the third bottom roller 67 by the urging spring 38.
- the cleaning belt 37 is stopped, the peripheral surface of the back bottom roller 66 and the third bottom roller 67 are rubbed against the surface of the cleaning belt 37.
- the fibers can be stripped from the peripheral surface of the back bottom roller 66 and the third bottom roller 67.
- the cleaning belt 37 is fed, the stripped fibers can be transferred to the cleaning belt 37.
- the stopping and feeding of the cleaning belt 37 are alternately repeated to effectively remove the fibers on the peripheral surface of the back bottom roller 66 and the third bottom roller 67. As a result, the fibers can be prevented from winding around the back bottom roller 66 and the third bottom roller 67.
- the draft device 7 of the present embodiment includes a plurality of (four) draft roller pairs including the top rollers 16, 17, 19, and 20, and the bottom rollers 66, 67, 69, and 70 arranged to respectively face the top rollers 16, 17, 19, and 20.
- the draft device 7 includes the cleaning belt 37 and the intermittent feeding device 101.
- the cleaning belt 37 has the cleaning surface. The cleaning surface makes contact with the back bottom roller 66 and the third bottom roller 67 to clean the back bottom roller 66 and the third bottom roller 67.
- the intermittent feeding device 101 receives power from the back bottom roller driving motor 91 adapted to drive one of the four bottom rollers (the back bottom roller 66) to intermittently feed the cleaning belt 37.
- the cleaning belt 37 adapted to clean the bottom roller corresponding to the driving side of the draft roller pair thus can be intermittently fed by reliably receiving the power of the back bottom roller driving motor 91 adapted to drive the back bottom roller 66.
- the fibers attached to the back bottom roller 66 and the third bottom roller 67 can be effectively cleaned without influencing the drafting of the fiber bundle 8. Since a special driving source for intermittent feeding is not required to be provided, the cost of the entire draft device 7 can be suppressed.
- the cleaning belt 37 is configured as a flexible endless belt. Accordingly, the back bottom roller 66 and the third bottom roller 67 are continuously cleaned, and the cleaning effect can be improved. Furthermore, since a wide (large) cleaning surface can be ensured, the cleaning effect is less likely to be lowered even if the fibers accumulate on the cleaning belt 37.
- the draft device 7 of the present embodiment includes the urging spring 38 adapted to push the cleaning belt 37 against the back bottom roller 66 and the third bottom roller 67. Since the cleaning surface of the cleaning belt 37 can be stably pushed against the peripheral surface of the back bottom roller 66 and the third bottom roller 67, the cleaning can be satisfactorily carried out. Even if the position of the back bottom roller 66 and the third bottom roller 67 are changed for changing the gauge, the cleaning effect is less likely to be lowered.
- the draft device 7 of the present embodiment includes the driving roller 33.
- the cleaning belt 37 is wound around the driving roller 33.
- the cleaning belt 37 is intermittently fed by intermittently rotating the driving roller 33.
- the plurality of grooves 33a are formed on the peripheral surface of the driving roller 33.
- the cleaning belt 37 can satisfactorily follow the driving roller 33, which repeatedly stops and rotates. Thus, the cleaning belt 37 can be reliably fed intermittently.
- the draft device 7 of the present embodiment includes two belt-supporting rollers (the driving roller 33 and the driven roller 36) arranged at an interval.
- the cleaning belt 37 is wound around the driving roller 33 and the driven roller 36 such that the cleaning belt 37 is arranged to be elliptical.
- the cleaning member of the back bottom roller 66 and the third bottom roller 67 can be made small. Therefore, the cleaning belt 37 can be easily arranged also in a narrow space at a periphery of the bottom rollers 66, 67, 69, and 70 (below the back bottom roller 66 and the third bottom roller 67). The two bottom rollers 66 and 67 can be easily cleaned with one cleaning belt 37.
- the draft device 7 of the present embodiment includes four draft roller pairs arranged in a travelling direction of the fiber bundle 8.
- the four draft roller pairs include three draft roller pairs, i. e. , a front roller pair (the draft roller pair including the front top roller 20 and the front bottom roller 70), a middle roller pair (the draft roller pair including the middle top roller 19 and the middle bottom roller 69), and a third roller pair (the draft roller pair including the third top roller 17 and the third bottom roller 67) arranged in this order from the downstream in the travelling direction of the fiber bundle 8.
- the apron belts 18 and 68 are respectively provided for the middle top roller 19 and the middle bottom roller 69 of the middle roller pair.
- the cleaning surface of the cleaning belt 37 makes contact with the third bottom roller 67 of the third roller pair.
- the distance between the draft rollers located upstream in the travelling direction of the fiber bundle 8 is generally longer than the distance between the downstream draft rollers. Therefore, the fibers particularly easily attach on the third roller pair located immediately upstream of the middle roller pair (the third top roller 17 and the third bottom roller 67) provided with the apron belts 18 and 68. Since the cleaning belt 37 cleans the third bottom roller 67, the fibers can be effectively prevented from winding around the bottom roller.
- the intermittent feeding device 101 receives the power from the back bottom roller driving motor 91 adapted to drive the bottom roller of the draft roller pair located most upstream in the travelling direction of the fiber bundle 8 (the draft roller pair including the back top roller 16 and the back bottom roller 66) to intermittently feed the cleaning belt 37. Since the power for intermittently feeding the cleaning belt 37 can be acquired at a close position, the drive transmission path can be simplified.
- the intermittent feeding device 101 includes the cleaning input pulley 84, the driving roller 33, the swing arm 32, the eccentric pin 85, the link member 86, and the one-way clutch 34.
- the driving force of the back bottom roller driving motor 91 is transmitted to the cleaning input pulley 84.
- the driving roller 33 drives the cleaning belt 37.
- the swing arm 32 is swingably supported.
- the eccentric pin 85 is integrally rotated with the cleaning input pulley 84.
- the link member 86 couples the eccentric pin 85 and the swing arm 32.
- the one-way clutch 34 is arranged between the swing arm 32 and the driving roller 33.
- the intermittent feeding in one direction of the cleaning belt 37 can be realized, the fibers attached to the back bottom roller 66 and the third bottom roller 67 can be reliably cleaned.
- the draft device 7 of the present embodiment includes the draft device main body 7x and the cleaning cassette 30.
- the draft device main body 7x supports the draft roller pair.
- the cleaning cassette 30 supports the cleaning belt 37.
- the cleaning cassette 30 is configured to be detachably mounted to the draft device main body 7x. The maintenance operation such as replacement of the cleaning belt 37 thus can be easily performed.
- the driving roller 33, the swing arm 32, and the one-way clutch 34 are arranged in the cleaning cassette 30. Accordingly, the cleaning belt 37 and a component group associated with the cleaning belt 37 can be collectively handled integrally as the cleaning cassette 30. As a result, the maintenance operation can be efficiently performed.
- the fine spinning machine 1 of the present embodiment includes the draft device 7, the spinning device 9, and the winding device 13.
- the spinning device 9 is adapted to spin the fiber bundle 8 drafted by the draft device 7 using airflow to produce the spun yarn 10.
- the winding device 13 winds the spun yarn 10 produced by the spinning device 9 into the package 45.
- the fiber bundle 8 is drafted with the back bottom roller 66 and the third bottom roller 67 which have been cleaned, and the spun yarn 10 produced from the fiber bundle 8 is wound into the package 45, a high quality package 45 can be obtained. Since accumulation of the fibers in the draft device 7 can be suppressed, the operation of the fine spinning machine 1 is not stopped due to an excessive accumulation of the fibers in the draft device 7, or the like. Therefore, operation efficiency of the fine spinning machine 1 can be improved.
- a recessed eccentric recess may be provided at an appropriate position of the cleaning input pulley 84, and a pin attached to one end of the link member 86 may be inserted into the eccentric recess to be coupled.
- a relationship of the recess and the coupling pin may be reversed also in a coupling structure of the link member 86 and the swing arm 32.
- the eccentric pin 85 and the link member 86 may be made detachable.
- the configuration for transmitting an output rotation of the back bottom roller driving motor 91 to the back bottom roller 66 and the intermittent feeding device 101 is not limited to the endless driving belt 93, and may be realized using other drive transmission member (e.g., a gear or the like).
- the power input to the intermittent feeding device 101 may be obtained from the third bottom roller driving motor 94.
- the motor adapted to drive the back bottom roller 66 and the third bottom roller 67 may be shared, and the intermittent feeding device 101 may receive the power from such a motor.
- a plurality of circular recesses may be formed, for example.
- a target of cleaning with the cleaning belt 37 is not limited to both of the back bottom roller 66 and the third bottom roller 67, and may be one of the back bottom roller 66 and the third bottom roller 67.
- the above-described cleaning belt 37 may be used.
- three or more bottom rollers may be cleaned with one cleaning belt 37.
- the spinning device is not limited to the configuration of applying twists with the air ejecting nozzle 27 adapted to generate the whirling airflow in one direction as in the embodiment described above, and various spinning methods may be adopted.
- the spinning device may include a pair of nozzles adapted to generate whirling airflows in opposite directions, such that twists in opposite directions may be simultaneously applied to the fiber bundle.
- the spinning device may be a spinning device of another type.
- a yarn feeding device including a pair of rollers may be arranged at a position between the spinning device 9 and the yarn accumulating device 12 in the yarn travelling direction.
- the spun yarn 10 travels from top to bottom in a machine height direction.
- the spun yarn may travel from the bottom to the top in the machine height direction.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
- The present invention relates to a configuration for cleaning a draft roller used in a draft device.
- Conventionally, a spinning machine includes a draft device adapted to draft a fiber bundle. The draft device includes a plurality of draft roller pairs, each of which includes a top roller and a bottom roller. The draft device is adapted to draft the fiber bundle by rotating the draft roller pairs at different speeds.
- When drafting the fiber bundle with the draft device, fibers of the fiber bundle may attach to a peripheral surface of the draft roller (the top roller or the bottom roller). If a large amount of foreign matters attach to the peripheral surface of the draft roller, quality of a yarn produced in a downstream spinning device may degrade, or yarn breakage or the like may occur. Therefore, to avoid such a problem, a configuration for cleaning the peripheral surface of the draft roller has been conventionally proposed.
- The cleaning device of the draft roller disclosed in Japanese Unexamined Patent Publication No.
2009-13550 - A scraper member is provided in a cleaning device of a draft roller disclosed in Japanese Unexamined Patent Publication No.
2006-22443 - In the draft device disclosed in Japanese Unexamined Patent Publication No.
2011-127238 - In this type of draft device, there is a problem of how to remove the fibers that fell out from the fiber bundle and attached to the peripheral surface of the draft roller during the drafting. If such fibers are attached to the peripheral surface of the draft roller so as to be wound around the peripheral surface, the attached fibers greatly influence the drafting, and the removal of the fibers may become difficult.
- In the configuration described in Japanese Unexamined Patent Publication No.
2009-13550 2009-13550 - In the configuration described in Japanese Unexamined Patent Publication No.
2006-22443 - In the configuration described in Japanese Unexamined Patent Publication No.
2011-127238 -
US 6,082,088 discloses features falling under the preamble ofclaim 1.GB 425 912 - An object of the present invention is to provide a draft device capable of effectively cleaning fibers attached to a peripheral surface of a draft roller without influencing drafting of the fiber bundle.
- According to a first aspect of the present invention, a draft device includes a plurality of draft roller pairs, each of the draft roller pairs including a top roller and a bottom roller arranged to face the top roller, the draft device being adapted to draft a fiber bundle by the draft roller pairs by driving the bottom rollers. The draft device includes a cleaning member and an intermittent feeding section. The cleaning member has a cleaning surface adapted to make contact with the bottom roller to clean such bottom roller. The intermittent feeding section is adapted to intermittently feed the cleaning member by receiving power from a driving source adapted to drive at least one of the bottom rollers.
- Accordingly, the cleaning member adapted to clean the bottom roller can be intermittently fed by reliably receiving the power of the driving source adapted to drive the bottom roller. As a result, the fibers attached to the bottom roller can be effectively cleaned without influencing the drafting of the fiber bundle. Since a special driving source for intermittent feeding is not required to be provided, a cost of the entire draft device can be suppressed.
- In the above draft device, the cleaning member is preferably a flexible endless belt. Accordingly, the cleaning effect can be improved by continuously cleaning the bottom roller. Since a wide cleaning surface can be ensured, the cleaning effect is less likely to be lowered even if the fibers accumulate on the cleaning member.
- The above draft device preferably includes an urging member adapted to urge the endless belt against the bottom roller. Accordingly, since the cleaning surface of the cleaning member can be stably pressed against the peripheral surface of the bottom roller, the cleaning can be satisfactorily carried out. The cleaning member can also easily respond to changes in a position of the bottom roller.
- The above draft device further includes an intermittent driving roller. The endless belt is wound around the intermittent driving roller. The intermittent driving roller is adapted to intermittently feed the endless belt by rotating intermittently. A plurality of recesses are formed on a peripheral surface of the intermittent driving roller.
- Accordingly, slipping is less likely to occur between the intermittent driving roller and the endless belt. The endless belt can satisfactorily follow the intermittent driving roller that repeatedly stops and rotates. The endless belt thus can be reliably fed intermittently.
- The above draft device includes two belt-supporting rollers arranged at an interval. The endless belt is wound around the two belt-supporting rollers such that the endless belt is arranged to be elliptical.
- Accordingly, since the long endless belt can be arranged in a flat shape, the cleaning member can be made small. Therefore, the cleaning member can be easily arranged also in a narrow space at a periphery of the bottom rollers. Two or more bottom rollers can be easily cleaned with one endless belt.
- The draft device includes at least three draft roller pairs arranged in a travelling direction of the fiber bundle. The at least three draft roller pairs are a front roller pair, a middle roller pair, and a third roller pair arranged in this order from downstream in the travelling direction of the fiber bundle. An apron belt is respectively provided for the top roller and the bottom roller of the middle roller pair. The cleaning surface of the endless belt as the cleaning member is provided to make contact with the bottom roller of the third roller pair.
- A distance between the draft rollers arranged upstream in the travelling direction of the fiber bundle is generally longer than the distance between the downstream draft rollers. Therefore, the fibers particularly easily wind around the third roller, which is the draft roller located immediately upstream of the draft roller pair provided with the apron belt. In the above configuration, since the cleaning member cleans the bottom roller of the third roller pair, the fibers can be effectively prevented from winding around the bottom roller.
- In the above draft device, the draft roller pairs are arranged in a direction substantially parallel to the travelling direction of the fiber bundle. The driving section is a motor adapted to drive the bottom roller located most upstream in the travelling direction of the fiber bundle. The intermittent feeding section is adapted to intermittently feed the cleaning member by receiving power from the motor. Accordingly, since the power for intermittently feeding the cleaning member can be received at a close position, a drive transmission path can be simplified.
- In the above draft device, the intermittent feeding section includes an input rotating body, an output rotating body, a reciprocating arm, an eccentric portion, a coupling member, and a one-way clutch. The input rotating body is adapted to receive transmission of power from the driving source. The output rotating body is adapted to drive the cleaning member. The reciprocating arm is swingably supported. The eccentric portion is adapted to integrally rotate with the input rotating body. The coupling member is adapted to couple the eccentric portion and the reciprocating arm. The one-way clutch is provided between the reciprocating arm and the output rotating body. Accordingly, since the endless belt can be intermittently fed in one direction, the fibers attached to the bottom roller can be reliably cleaned.
- The above draft device further includes a draft device main body and a cleaning unit. The draft device main body is adapted to support the draft roller pairs. The cleaning unit is adapted to support the cleaning member. The cleaning unit is provided detachably with respect to the draft device main body. Accordingly, a maintenance operation such as changing the cleaning member can be easily performed.
- In the above draft device, the intermittent feeding section includes an input rotating body, an output rotating body, a reciprocating arm, an eccentric portion, a coupling member, and a one-way clutch. The input rotating body is adapted to receive transmission of power from the driving source. The output rotating body is adapted to drive the cleaning member. The reciprocating arm is swingably supported. The eccentric portion is adapted to integrally rotate with the input rotating body. The coupling member is adapted to couple the eccentric portion and the reciprocating arm. The one-way clutch is provided between the reciprocating arm and the output rotating body. The cleaning unit includes at least the output rotating body, the reciprocating arm, and the one-way clutch.
- Accordingly, the cleaning member and a component group associated with the cleaning member can be collectively handled integrally as a cleaning unit. As a result, the maintenance operation can be efficiently performed.
- According to a second aspect of the present invention, a spinning machine includes a draft device, a spinning device, and a winding device. The spinning device is adapted to produce a spun yarn by spinning the fiber bundle drafted by the draft device using airflow. The winding device is adapted to wind the spun yarn produced by the spinning device into a package.
- Accordingly, since the fiber bundle is drafted with the cleaned bottom roller, and the spun yarn produced from the fiber bundle is wound into the package, a high quality package can be obtained. Since accumulation of the fibers in the draft device can be suppressed, an operation of the spinning machine is not stopped due to excessive accumulation of the fibers in the draft device, or the like. Therefore, operation efficiency of the spinning machine can be improved.
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FIG. 1 is a front view illustrating an overall configuration of a fine spinning machine according to one embodiment of the present invention; -
FIG. 2 is a side view of a spinning unit; -
FIG. 3 is a cross-sectional view of a spinning device; -
FIG. 4 is a side view illustrating a configuration of a periphery of a back bottom roller and a third bottom roller; and -
FIG. 5 is a cross-sectional side view illustrating a detached cleaning cassette. - A fine spinning machine (spinning machine) according to one embodiment of the present invention will be described with reference to the drawings.
- A
fine spinning machine 1 as the spinning machine illustrated inFIG. 1 includes a plurality of spinningunits 2 arranged in line. Thefine spinning machine 1 includes ayarn joining cart 3, ablower box 80, and amotor box 5. - Each
spinning unit 2 includes adraft device 7, aspinning device 9, a yarn slack eliminating device (yarn accumulating device) 12, and a windingdevice 13, arranged in this order from upstream to downstream. "Upstream" and "downstream" respectively refer to upstream and downstream in a travelling direction of a fiber bundle and a spun yarn at the time of spinning. Eachspinning unit 2 is adapted to spin afiber bundle 8 fed from thedraft device 7 by thespinning device 9 to produce a spunyarn 10, and the spunyarn 10 is wound into apackage 45 by the windingdevice 13. - The
draft device 7 is arranged in proximity to an upper end of aframe 6 of thefine spinning machine 1. Thedraft device 7 drafts (stretches) the fiber bundle (a sliver) 8 supplied from a sliver case (not illustrated) through a sliver guide (not illustrated) to a predetermined width. Thefiber bundle 8 drafted by thedraft device 7 is supplied to thespinning device 9. - The
spinning device 9 twists thefiber bundle 8 supplied from thedraft device 7 to produce the spunyarn 10. In the present embodiment, an air-jet spinning device which uses whirling airflow to twist thefiber bundle 8 is adopted as thespinning device 9. As illustrated inFIG. 3 , thespinning device 9 includes anozzle holder 63, a hollowguide shaft body 23, and a fiber guide (fiber guiding section) 22. - A spinning
chamber 26 is formed between thenozzle holder 63 and the hollowguide shaft body 23. Thenozzle holder 63 is provided with anair ejecting nozzle 27 for ejecting air into the spinningchamber 26. Thefiber guide 22 is provided with an introducingport 21 for introducing thefiber bundle 8 into the spinningchamber 26. Theair ejecting nozzle 27 is configured to eject the air into the spinningchamber 26 to generate whirling airflow. Thefiber bundle 8 supplied from thedraft device 7 is guided into the spinningchamber 26 by thefiber guide 22 having the introducingport 21. In the spinningchamber 26, fibers of thefiber bundle 8 are swung around the hollowguide shaft body 23 by the whirling airflow, to apply the twists to thefiber bundle 8, and the spunyarn 10 is produced. The twisted spunyarn 10 is passed through ayarn passage 29 formed at an axial center of the hollowguide shaft body 23, and fed to an outside of thespinning device 9 from a yarn exit (not illustrated) located downstream of the hollowguide shaft body 23. - A needle-
like guide needle 22a is arranged in the introducingport 21, and a tip of theguide needle 22a is directed towards the spinningchamber 26. Thefiber bundle 8 introduced from theyarn introducing port 21 is guided into the spinningchamber 26 via theguide needle 22a. Accordingly, a state of thefiber bundle 8 introduced into the spinningchamber 26 can be stabilized. Since thefiber bundle 8 is guided via theguide needle 22a, even if twists are applied to the fibers in the spinningchamber 26, the twists are prevented from being propagated to the upstream of thefiber guide 22. Accordingly, the twists applied by thespinning device 9 are prevented from influencing thedraft device 7. - The
yarn accumulating device 12 is arranged downstream of thespinning device 9. Theyarn accumulating device 12 includes ayarn accumulating roller 14 and anelectric motor 25 for rotatably driving theyarn accumulating roller 14. - The
yarn accumulating roller 14 can have a prescribed amount of the spunyarn 10 wound around an outer peripheral surface thereof to temporarily accumulate the spunyarn 10. When theyarn accumulating roller 14 is rotated at a predetermined rotation speed with the spunyarn 10 wound around the outer peripheral surface of theyarn accumulating roller 14, theyarn accumulating device 12 can pull out the spunyarn 10 from thespinning device 9 at a predetermined speed and transport the spunyarn 10 towards the downstream. - The winding
device 13 includes acradle arm 71 supported to be swingable about a supportingshaft 73. Thecradle arm 71 can rotatably support abobbin 48 for winding the spunyarn 10. - The winding
device 13 includes a windingdrum 72 and atraverse device 75. The windingdrum 72 is adapted to be driven while making contact with an outer peripheral surface of thebobbin 48 or an outer peripheral surface of thepackage 45. Thetraverse device 75 includes atraverse guide 76 capable of being engaged with the spunyarn 10. The windingdrum 72 is driven by an electric motor (not illustrated) while reciprocating thetraverse guide 76 by a driving unit (not illustrated). The windingdevice 13 rotates thepackage 45 making contact with the windingdrum 72, and the spunyarn 10 is wound into thepackage 45 while being traversed. - The
yarn joining cart 3 includes a splicer (yarn joining device) 43, asuction pipe 44, and asuction mouth 46. When yarn breakage or yarn cut occurs in aspinning unit 2, theyarn joining cart 3 travels on arail 41 provided at a lower part of theframe 6 to thetarget spinning unit 2 and stops. Thesuction pipe 44 sucks and catches a yarn end from thespinning device 9 while being swung vertically with a shaft as the center and guides the yarn end to thesplicer 43. Thesuction mouth 46 sucks and catches a yarn end from thepackage 45 supported by the windingdevice 13 while being swung vertically with a shaft as the center, and guides the yarn end to thesplicer 43. Thesplicer 43 joins the guided yarn ends. - A
yarn clearer 52 is arranged at a position between the spinningdevice 9 and theyarn accumulating device 12. The spunyarn 10 spun by thespinning device 9 is passed through theyarn clearer 52 before being wound by theyarn accumulating device 12. Theyarn clearer 52 monitors the travelling spunyarn 10 with a sensor (not illustrated), and when a yarn defect of the spun yarn 10 (a portion in which abnormality is found in thickness or the like of the spunyarn 10, or foreign substances contained the spun yarn 10) is detected, theyarn clearer 52 transmits a yarn defect detection signal to a unit controller (not illustrated). - Upon receiving the yarn defect detection signal, the unit controller immediately cuts the spun
yarn 10 with acutter 57, stops thedraft device 7, thespinning device 9, and the like, and also stops the winding in the windingdevice 13. The unit controller transmits a control signal to theyarn joining cart 3, and theyarn joining cart 3 travels to front of thespinning unit 2. Theyarn joining cart 3 guides the yarn end from thespinning device 9 and the yarn end from thepackage 45 to thesplicer 43 with thesuction pipe 44 and thesuction mouth 46, respectively, and carries out a yarn joining operation by thesplicer 43. According to such a yarn joining operation, the yarn defect is removed, and the winding of the spunyarn 10 into thepackage 45 can be resumed. Thecutter 57 may be omitted, and the spunyarn 10 may be cut as if being torn off by stopping the driving of thedraft device 7 while continuing the driving of the windingdevice 13. Supply of air to thespinning device 9 may be stopped and the spunyarn 10 may be cut by interrupting the production of the spunyarn 10. - Next, the
draft device 7 will be described. - The
draft device 7 includes a tubular sliver guide 15 adapted to introduce thefiber bundle 8, and a plurality of draft rollers. Two draft rollers as one set form a draft roller pair. Thedraft device 7 of the present embodiment includes four draft roller pairs, i.e., a back roller pair includingdraft rollers draft rollers draft rollers 19 and 69, and a front roller pair includingdraft rollers - In each draft roller pair, a draft roller on a front side of the
fine spinning machine 1 is referred to as a top roller, and a draft roller on a rear side of thefine spinning machine 1 is referred to as a bottom roller. The top rollers are, in the order from the upstream, a backtop roller 16, a thirdtop roller 17, a middletop roller 19 provided with arubber apron belt 18, and a fronttop roller 20. The bottom rollers are, in the order from the upstream, aback bottom roller 66, a thirdbottom roller 67, a middle bottom roller 69 provided with anapron belt 68, and afront bottom roller 70. - An outer peripheral surface of each of the
top rollers top rollers bottom rollers - The
draft device 7 includes an urging means (not illustrated) adapted to urge thetop rollers bottom rollers top rollers bottom rollers bottom rollers top rollers bottom rollers - The
draft device 7 nips (sandwiches) thefiber bundle 8 between the rotatingtop rollers bottom rollers fiber bundle 8 towards the downstream. In thedraft device 7, the rotation speed of the downstream draft roller pair is faster. Therefore, thefiber bundle 8 is stretched (drafted) while being transported between the draft roller pair and the draft roller pair, and a width of thefiber bundle 8 becomes narrower towards the downstream. - Since a degree to which the
fiber bundle 8 is drafted can be changed by appropriately setting the rotation speed of each of thebottom rollers fiber bundle 8 drafted to a desired width can be supplied to thespinning device 9. Accordingly, the spunyarn 10 of a desired yarn count (thickness) can be spun by thespinning device 9. - Next, a configuration for driving the
back bottom roller 66 and the thirdbottom roller 67, and a configuration for cleaning the peripheral surface of theback bottom roller 66 and the thirdbottom roller 67 will be described with reference toFIG. 4 andFIG. 5 . - The
draft device 7 includes a first supportingplate 81 adapted to support theback bottom roller 66 and a second supportingplate 82 adapted to support the thirdbottom roller 67. Although not illustrated inFIG. 4 , the supportingplates frame 6 of thefine spinning machine 1. - The
back bottom roller 66 is rotatably supported by an upper part of the first supportingplate 81. A couplingpulley 83 is fixed to a roller shaft of theback bottom roller 66. The couplingpulley 83 can integrally rotate with theback bottom roller 66. A cleaning input pulley (an input rotating body) 84 is rotatably supported by the first supportingplate 81. The cleaninginput pulley 84 is arranged at a position farther than theback bottom roller 66 and at a position closer than a back bottomroller driving motor 91, to be described later, when seen from a travelling path of thefiber bundle 8. An eccentric pin (an eccentric portion) 85 protrudes from an end surface of a pulley shaft of the cleaninginput pulley 84. One end of an elongate link member (a coupling member) 86 is rotatably coupled to theeccentric pin 85. - The back bottom roller driving motor (a driving source) 91 is arranged below the first supporting plate 81 (a side located away from the travelling path of the fiber bundle 8). An
output pulley 92 is fixed to an output shaft of the back bottomroller driving motor 91. Theoutput pulley 92, the couplingpulley 83, and the cleaninginput pulley 84 are configured as pulleys with teeth. The threepulleys belt 93, which is an endless belt with teeth. - The third
bottom roller 67 is rotatably supported by an upper part of the second supporting plate 82 (a portion on a side located close to the travelling path of the fiber bundle 8). A couplingpulley 87 is fixed to a roller shaft of the thirdbottom roller 67. The couplingpulley 87 can be integrally rotated with the thirdbottom roller 67. - A third bottom
roller driving motor 94 is arranged below the second supporting plate 82 (a side located away from the travelling path of the fiber bundle 8). Anoutput pulley 95 is fixed to an output shaft of the third bottomroller driving motor 94. Theoutput pulley 95 and thecoupling pulley 87 are configured as pulleys with teeth. The twopulleys belt 96, which is an endless belt with teeth. - A plate-shaped
cleaning supporting frame 88 is fixed to the first supportingplate 81. Anattachment hole 89 is formed as a through hole in thecleaning supporting frame 88. Aprotrusion 55 of ahousing 31 of a cleaningcassette 30, to be described later, can be inserted into theattachment hole 89. Thecleaning supporting frame 88 also supports thesliver guide 15 adapted to guide thefiber bundle 8 to thedraft device 7. - The cleaning cassette (a cleaning unit) 30 is arranged to be inserted between the
back bottom roller 66 and the thirdbottom roller 67, which are to be cleaned, and the back bottomroller driving motor 91 and the third bottomroller driving motor 94 adapted to drive thedraft rollers cassette 30 includes thehousing 31, a swing arm (a reciprocating arm) 32, a driving roller (a belt-supporting roller, an intermittent driving roller, or an output rotating body) 33, a one-way clutch 34, a drivenroller supporting arm 35, a driven roller (belt-supporting roller) 36, and a cleaning belt (a cleaning member) 37. - The
housing 31 is made from synthetic resin or metal in an elongate shape when seen in an axial line direction of thedraft rollers housing 31 is formed in a box-shape opened at a portion facing theback bottom roller 66 and the thirdbottom roller 67. Theprotrusion 55 having a shape substantially corresponding to theattachment hole 89 of thecleaning supporting frame 88 is formed at a bottom of thehousing 31. The housing 31 (the cleaning cassette 30) can be attached to thecleaning supporting frame 88 by inserting theprotrusion 55 into theattachment hole 89. - A hooking
member 60 adapted to fix thehousing 31 to thecleaning supporting frame 88 is attached to thehousing 31. The hookingmember 60 includes asandwiching arm 61, and is configured to sandwich thecleaning supporting frame 88 between the sandwichingarm 61 and thehousing 31. Aclaw portion 62 capable of being hooked to an edge of theattachment hole 89 is formed at a tip-end of thesandwiching arm 61. An urging spring (not illustrated) adapted to urge thesandwiching arm 61 and theclaw portion 62 in a direction of approaching thehousing 31 is attached to the hookingmember 60. -
FIG. 4 illustrates a state in which the cleaningcassette 30 is installed in thedraft device 7. In this state, theprotrusion 55 of thehousing 31 is inserted into theattachment hole 89 of thecleaning supporting frame 88. Furthermore, theclaw portion 62 on a tip-end side of thesandwiching arm 61 of the hookingmember 60 is inserted into theattachment hole 89, and theclaw portion 62 hooks thecleaning supporting frame 88 by an urging force of the urging spring. The cleaningcassette 30 thus can be fixed so as not to move with respect to thecleaning supporting frame 88. - When performing a maintenance operation, an operator hooks a finger on the hooking
member 60 and swings the hookingmember 60 as illustrated with a chain line inFIG. 4 to pull out theclaw portion 62 from theattachment hole 89. Furthermore, the cleaningcassette 30 can be detached from thedraft device 7 by pulling out thehousing 31 towards a side opposite to the travelling direction of the fiber bundle 8 (i.e., a direction of an outlined arrow inFIG. 4 ) while lifting thehousing 31 so as to remove theprotrusion 55 from theattachment hole 89.FIG. 5 illustrates a cross-sectional view of thedetached cleaning cassette 30. - The
swing arm 32 is swingably supported by a side surface of the housing 31 (a side surface located in a direction substantially parallel to the travelling direction of the fiber bundle 8) as illustrated inFIG. 4 . A tip-end portion of theswing arm 32 is coupled to theeccentric pin 85 via thelink member 86. When the cleaninginput pulley 84 is rotated, theswing arm 32 is swung so as to reciprocate at a small stroke accompanying a change in a position of theeccentric pin 85. - A C-shaped
recess 56, in which an upper side is opened, is formed in thelink member 86 to be coupled with theswing arm 32. Acoupling pin 58 is fixed to the tip-end of theswing arm 32. Theswing arm 32 is made from a material capable of being elastically deformed to a certain degree (synthetic resin in the present embodiment). Thecoupling pin 58 is fitted while deforming therecess 56 to couple thelink member 86 and theswing arm 32. As thelink member 86 can be detachably provided with respect to theswing arm 32, the cleaningcassette 30 can be easily attached to and detached from thedraft device 7. - When seen from the
eccentric pin 85, thelink member 86 includes an extendedportion 59 formed to further extend from therecess 56. By applying a force with a finger to push down the extendedportion 59, the operator can easily remove thecoupling pin 58 from therecess 56 and decouple thelink member 86 and theswing arm 32. - The driving
roller 33 is rotatably supported by thehousing 31 such that an arm axis of theswing arm 32 and the axial line of the drivingroller 33 are matched. The drivingroller 33 has a slightly wider width (length) extending in the roller axis direction than theback bottom roller 66 and the thirdbottom roller 67. As illustrated inFIG. 5 , axially elongate grooves (recesses) 33a are formed at an equal interval in a peripheral direction on a peripheral surface of the drivingroller 33. - The one-way clutch 34 is interposed between the
swing arm 32 and the drivingroller 33. The one-way clutch 34 transmits a rotation in one direction of the swing arm 32 (specifically, clockwise inFIG. 4 ) to the drivingroller 33, and does not transmit a rotation opposite thereto (counterclockwise inFIG. 4 ) to the drivingroller 33. The drivingroller 33 thus can be intermittently driven. - A driven
roller supporting arm 35 is an arm-shaped member formed in an elongate shape. A first tip-end of the drivenroller supporting arm 35 is swingably supported by thehousing 31. A portion of a second tip-end of the drivenroller supporting arm 35 is arranged to project out from thehousing 31. An urgingspring 38 is a torsion coil spring attached to the drivenroller supporting arm 35. The urgingspring 38 urges the second tip-end of the drivenroller supporting arm 35 in a direction of approaching (direction of rising) towards the thirdbottom roller 67 by the spring force thereof. - As illustrated in
FIG. 5 , a contactingsurface 35a is formed at a middle portion in a longitudinal direction of the drivenroller supporting arm 35. The contactingsurface 35a pushes an inner peripheral surface of the cleaningbelt 37 upward (outside) accompanying the swing of the drivenroller supporting arm 35 by an action of the urgingspring 38 to push a cleaning surface of the cleaningbelt 37 against theback bottom roller 66 and the thirdbottom roller 67. - As illustrated in
FIG. 4 , a position where the contactingsurface 35a pushes up the cleaningbelt 37 is a position located between theback bottom roller 66 and the thirdbottom roller 67. Therefore, the cleaningbelt 37 can be made to contact with theback bottom roller 66 and the thirdbottom roller 67 at a wide area while being slightly curved in a zigzag manner. Theback bottom roller 66 and the thirdbottom roller 67 thus can be satisfactorily cleaned with the cleaningbelt 37. - A driven
roller 36 is rotatably supported by the second tip-end of the drivenroller supporting arm 35. A diameter of the drivenroller 36 is substantially equal to a diameter of the drivingroller 33. The drivenroller 36 has a slightly wider width (length) extending in the roller axis direction than theback bottom roller 66 and the thirdbottom roller 67. - The cleaning
belt 37 is an endless member having a slightly wider width (length) extending in a roller axis direction than theback bottom roller 66 and the thirdbottom roller 67. The cleaningbelt 37 is wound around the drivingroller 33 and the drivenroller 36 such that the cleaningbelt 37 is substantially elliptical in side view. The cleaningbelt 37 thus has a flat shape substantially parallel to the travelling path of thefiber bundle 8. - Since the spring force of the urging
spring 38 acts on the drivenroller supporting arm 35, the drivenroller 36 is pushed up. As a result, an outer peripheral surface (the cleaning surface) of the cleaningbelt 37 is pushed against the peripheral surface of theback bottom roller 66 and the thirdbottom roller 67 at an appropriate force. - The cleaning
belt 37 is flatly supported by two rollers (the drivingroller 33 and the driven roller 36), and the cleaningbelt 37 can be pushed against both theback bottom roller 66 and the thirdbottom roller 67 in a balanced manner with the action of the urgingspring 38. In thedraft device 7, in order to change the interval (a gauge) between the draft roller pairs according to a type and/or an application of the fibers to be spun, the position of thebottom rollers back bottom roller 66 and the thirdbottom roller 67 are displaced in the travelling direction of thefiber bundle 8, the flat-shapedcleaning belt 37 can be stably made in contact and a satisfactory cleaning effect can be exerted. - In the
draft device 7 having the above configuration, the first supportingplate 81, the second supportingplate 82, the back bottomroller driving motor 91, the third bottomroller driving motor 94, the coupling pulleys 83 and 87, the drivingbelts main body 7x for supporting and driving the bottom roller adapted to draft the fiber bundle 8 (theback bottom roller 66 and the third bottom roller 67). The cleaninginput pulley 84, thelink member 86, theswing arm 32, the drivingroller 33, the one-way clutch 34, and the like configure an intermittent feeding device (intermittent feeding section) 101 adapted to intermittently feed the cleaningbelt 37. - The cleaning
input pulley 84 of theintermittent feeding device 101 is mechanically coupled to an output shaft of the back bottomroller driving motor 91 adapted to drive theback bottom roller 66 by the drivingbelt 93. In order to intermittently feed the cleaningbelt 37 for cleaning the twobottom rollers intermittent feeding device 101 receives power from the driving source of theback bottom roller 66 located most upstream. Since theintermittent feeding device 101 can receive the power for intermittent feeding from a close position, the drive transmission path can be simplified. - Next, the driving of the
back bottom roller 66 and the thirdbottom roller 67, and the intermittent feeding of the cleaningbelt 37 accompanying the driving in thedraft device 7 will be described. - When a drive signal is transmitted to the back bottom
roller driving motor 91, and theoutput pulley 92 is driven, the couplingpulley 83 coupled to theoutput pulley 92 via the drivingbelt 93 is rotated, and theback bottom roller 66 is rotatably driven. The backtop roller 16 is rotated accompanying the rotation of theback bottom roller 66. - When a drive signal is transmitted to the third bottom
roller driving motor 94 and theoutput pulley 95 is driven, the couplingpulley 87 coupled to theoutput pulley 95 via the drivingbelt 96 is rotated, and the thirdbottom roller 67 is rotatably driven. The thirdtop roller 17 is rotated accompanying the rotation of the thirdbottom roller 67. - Therefore, the
fiber bundle 8 can be fed to the downstream draft roller pair while drafting thefiber bundle 8 between the two draft roller pairs. - Accompanying the rotation of the
output pulley 92 of the back bottomroller driving motor 91, the cleaninginput pulley 84 coupled to theoutput pulley 92 via the drivingbelt 93 is rotated. Therefore, the position of theeccentric pin 85 provided on the pulley shaft of the cleaninginput pulley 84 is changed, and hence theswing arm 32 coupled to theeccentric pin 85 via thelink member 86 is swung. Specifically, theswing arm 32 makes one reciprocating swing within a predetermined angular range every time the cleaninginput pulley 84 makes one rotation. - When the
swing arm 32 is swung clockwise inFIG. 4 , the one-way clutch 34 transmits the swing to the drivingroller 33. When theswing arm 32 is swung counterclockwise inFIG. 4 , the one-way clutch 34 shuts the transmission of the swing. The drivingroller 33 is thus intermittently rotated clockwise inFIG. 4 , and the cleaningbelt 37 can be intermittently fed. - The cleaning
belt 37 is intermittently fed as described above while being pushed against theback bottom roller 66 and the thirdbottom roller 67 by the urgingspring 38. Thus, when the cleaningbelt 37 is stopped, the peripheral surface of theback bottom roller 66 and the thirdbottom roller 67 are rubbed against the surface of the cleaningbelt 37. As a result, the fibers can be stripped from the peripheral surface of theback bottom roller 66 and the thirdbottom roller 67. When the cleaningbelt 37 is fed, the stripped fibers can be transferred to the cleaningbelt 37. The stopping and feeding of the cleaningbelt 37 are alternately repeated to effectively remove the fibers on the peripheral surface of theback bottom roller 66 and the thirdbottom roller 67. As a result, the fibers can be prevented from winding around theback bottom roller 66 and the thirdbottom roller 67. - As described above, the
draft device 7 of the present embodiment includes a plurality of (four) draft roller pairs including thetop rollers bottom rollers top rollers bottom rollers draft device 7 drafts thefiber bundle 8 by the draft roller pairs. Thedraft device 7 includes the cleaningbelt 37 and theintermittent feeding device 101. The cleaningbelt 37 has the cleaning surface. The cleaning surface makes contact with theback bottom roller 66 and the thirdbottom roller 67 to clean theback bottom roller 66 and the thirdbottom roller 67. Theintermittent feeding device 101 receives power from the back bottomroller driving motor 91 adapted to drive one of the four bottom rollers (the back bottom roller 66) to intermittently feed the cleaningbelt 37. - The cleaning
belt 37 adapted to clean the bottom roller corresponding to the driving side of the draft roller pair (theback bottom roller 66 and the third bottom roller 67) thus can be intermittently fed by reliably receiving the power of the back bottomroller driving motor 91 adapted to drive theback bottom roller 66. As a result, the fibers attached to theback bottom roller 66 and the thirdbottom roller 67 can be effectively cleaned without influencing the drafting of thefiber bundle 8. Since a special driving source for intermittent feeding is not required to be provided, the cost of theentire draft device 7 can be suppressed. - In the
draft device 7 of the present embodiment, the cleaningbelt 37 is configured as a flexible endless belt. Accordingly, theback bottom roller 66 and the thirdbottom roller 67 are continuously cleaned, and the cleaning effect can be improved. Furthermore, since a wide (large) cleaning surface can be ensured, the cleaning effect is less likely to be lowered even if the fibers accumulate on the cleaningbelt 37. - The
draft device 7 of the present embodiment includes the urgingspring 38 adapted to push the cleaningbelt 37 against theback bottom roller 66 and the thirdbottom roller 67. Since the cleaning surface of the cleaningbelt 37 can be stably pushed against the peripheral surface of theback bottom roller 66 and the thirdbottom roller 67, the cleaning can be satisfactorily carried out. Even if the position of theback bottom roller 66 and the thirdbottom roller 67 are changed for changing the gauge, the cleaning effect is less likely to be lowered. - The
draft device 7 of the present embodiment includes the drivingroller 33. The cleaningbelt 37 is wound around the drivingroller 33. The cleaningbelt 37 is intermittently fed by intermittently rotating the drivingroller 33. The plurality ofgrooves 33a are formed on the peripheral surface of the drivingroller 33. - Since slipping is less likely to occur between the driving
roller 33 and the cleaningbelt 37, the cleaningbelt 37 can satisfactorily follow the drivingroller 33, which repeatedly stops and rotates. Thus, the cleaningbelt 37 can be reliably fed intermittently. - The
draft device 7 of the present embodiment includes two belt-supporting rollers (the drivingroller 33 and the driven roller 36) arranged at an interval. The cleaningbelt 37 is wound around the drivingroller 33 and the drivenroller 36 such that the cleaningbelt 37 is arranged to be elliptical. - Since the
long cleaning belt 37 can be arranged in a flat shape, the cleaning member of theback bottom roller 66 and the thirdbottom roller 67 can be made small. Therefore, the cleaningbelt 37 can be easily arranged also in a narrow space at a periphery of thebottom rollers back bottom roller 66 and the third bottom roller 67). The twobottom rollers cleaning belt 37. - The
draft device 7 of the present embodiment includes four draft roller pairs arranged in a travelling direction of thefiber bundle 8. The four draft roller pairs include three draft roller pairs, i. e. , a front roller pair (the draft roller pair including the fronttop roller 20 and the front bottom roller 70), a middle roller pair (the draft roller pair including the middletop roller 19 and the middle bottom roller 69), and a third roller pair (the draft roller pair including the thirdtop roller 17 and the third bottom roller 67) arranged in this order from the downstream in the travelling direction of thefiber bundle 8. Theapron belts top roller 19 and the middle bottom roller 69 of the middle roller pair. The cleaning surface of the cleaningbelt 37 makes contact with the thirdbottom roller 67 of the third roller pair. - The distance between the draft rollers located upstream in the travelling direction of the
fiber bundle 8 is generally longer than the distance between the downstream draft rollers. Therefore, the fibers particularly easily attach on the third roller pair located immediately upstream of the middle roller pair (the thirdtop roller 17 and the third bottom roller 67) provided with theapron belts belt 37 cleans the thirdbottom roller 67, the fibers can be effectively prevented from winding around the bottom roller. - In the
draft device 7 of the present embodiment, four draft roller pairs are lined in the travelling direction of thefiber bundle 8. Theintermittent feeding device 101 receives the power from the back bottomroller driving motor 91 adapted to drive the bottom roller of the draft roller pair located most upstream in the travelling direction of the fiber bundle 8 (the draft roller pair including the backtop roller 16 and the back bottom roller 66) to intermittently feed the cleaningbelt 37. Since the power for intermittently feeding the cleaningbelt 37 can be acquired at a close position, the drive transmission path can be simplified. - In the
draft device 7 of the present embodiment, theintermittent feeding device 101 includes the cleaninginput pulley 84, the drivingroller 33, theswing arm 32, theeccentric pin 85, thelink member 86, and the one-way clutch 34. The driving force of the back bottomroller driving motor 91 is transmitted to the cleaninginput pulley 84. The drivingroller 33 drives the cleaningbelt 37. Theswing arm 32 is swingably supported. Theeccentric pin 85 is integrally rotated with the cleaninginput pulley 84. Thelink member 86 couples theeccentric pin 85 and theswing arm 32. The one-way clutch 34 is arranged between theswing arm 32 and the drivingroller 33. - Accordingly, since the intermittent feeding in one direction of the cleaning
belt 37 can be realized, the fibers attached to theback bottom roller 66 and the thirdbottom roller 67 can be reliably cleaned. - The
draft device 7 of the present embodiment includes the draft devicemain body 7x and the cleaningcassette 30. The draft devicemain body 7x supports the draft roller pair. The cleaningcassette 30 supports the cleaningbelt 37. The cleaningcassette 30 is configured to be detachably mounted to the draft devicemain body 7x. The maintenance operation such as replacement of the cleaningbelt 37 thus can be easily performed. - In the
draft device 7 of the present embodiment, at least the drivingroller 33, theswing arm 32, and the one-way clutch 34 are arranged in the cleaningcassette 30. Accordingly, the cleaningbelt 37 and a component group associated with the cleaningbelt 37 can be collectively handled integrally as the cleaningcassette 30. As a result, the maintenance operation can be efficiently performed. - The
fine spinning machine 1 of the present embodiment includes thedraft device 7, thespinning device 9, and the windingdevice 13. Thespinning device 9 is adapted to spin thefiber bundle 8 drafted by thedraft device 7 using airflow to produce the spunyarn 10. The windingdevice 13 winds the spunyarn 10 produced by thespinning device 9 into thepackage 45. - Accordingly, since the
fiber bundle 8 is drafted with theback bottom roller 66 and the thirdbottom roller 67 which have been cleaned, and the spunyarn 10 produced from thefiber bundle 8 is wound into thepackage 45, ahigh quality package 45 can be obtained. Since accumulation of the fibers in thedraft device 7 can be suppressed, the operation of thefine spinning machine 1 is not stopped due to an excessive accumulation of the fibers in thedraft device 7, or the like. Therefore, operation efficiency of thefine spinning machine 1 can be improved. - The preferred embodiments of the present invention have been described above, but the structures described above may be modified as below.
- Instead of providing the protruding
eccentric pin 85 on the pulley shaft of the cleaninginput pulley 84, a recessed eccentric recess may be provided at an appropriate position of the cleaninginput pulley 84, and a pin attached to one end of thelink member 86 may be inserted into the eccentric recess to be coupled. A relationship of the recess and the coupling pin may be reversed also in a coupling structure of thelink member 86 and theswing arm 32. - Instead of or in addition to having the
link member 86 and theswing arm 32 detachable, theeccentric pin 85 and thelink member 86 may be made detachable. - The configuration for transmitting an output rotation of the back bottom
roller driving motor 91 to theback bottom roller 66 and theintermittent feeding device 101 is not limited to theendless driving belt 93, and may be realized using other drive transmission member (e.g., a gear or the like). - Instead of the back bottom
roller driving motor 91, the power input to theintermittent feeding device 101 may be obtained from the third bottomroller driving motor 94. The motor adapted to drive theback bottom roller 66 and the thirdbottom roller 67 may be shared, and theintermittent feeding device 101 may receive the power from such a motor. - Instead of forming the axially
elongate grooves 33a lined in the peripheral direction on the peripheral surface of the drivingroller 33, a plurality of circular recesses may be formed, for example. - A target of cleaning with the cleaning
belt 37 is not limited to both of theback bottom roller 66 and the thirdbottom roller 67, and may be one of theback bottom roller 66 and the thirdbottom roller 67. In order to clean the middle bottom roller 69 (the apron belt) and/or thefront bottom roller 70, the above-describedcleaning belt 37 may be used. Furthermore, three or more bottom rollers may be cleaned with onecleaning belt 37. - The spinning device is not limited to the configuration of applying twists with the
air ejecting nozzle 27 adapted to generate the whirling airflow in one direction as in the embodiment described above, and various spinning methods may be adopted. For example, the spinning device may include a pair of nozzles adapted to generate whirling airflows in opposite directions, such that twists in opposite directions may be simultaneously applied to the fiber bundle. The spinning device may be a spinning device of another type. - A yarn feeding device including a pair of rollers may be arranged at a position between the spinning
device 9 and theyarn accumulating device 12 in the yarn travelling direction. - In the embodiment described above, in the
spinning unit 2, the spunyarn 10 travels from top to bottom in a machine height direction. However, in the spinning unit, the spun yarn may travel from the bottom to the top in the machine height direction.
Claims (11)
- A draft device including a plurality of draft roller pairs, each of the draft roller pairs including a top roller (16, 17, 19, 20) and a bottom roller (66, 67, 69, 70), the draft device being adapted to draft a fiber bundle (8) by the draft roller pairs by driving bottom rollers (66, 67, 69, 70), the draft device comprising:a cleaning member (37) having a cleaning surface adapted to make contact with at least one of the bottom rollers (66, 67, 69, 70) to clean such bottom roller (66, 67, 69, 70), andan intermittent feeding section (101) adapted to intermittently feed the cleaning member (37) characterized in that the intermittent feeding section (101) receives power from a driving source (91) adapted to drive at least one of the bottom rollers (66, 67, 69, 70).
- The draft device according to claim 1, wherein the cleaning member (37) is a flexible endless belt.
- The draft device according to claim 2, further comprising an urging member (38) adapted to urge the endless belt against at least one of the bottom rollers (66, 67, 69, 70).
- The draft device according to claim 2 or claim 3, further comprising an intermittent driving roller (33) around which the endless belt is wound and adapted to intermittently feed the endless belt by rotating intermittently,
wherein a plurality of recesses are formed on a surface of the intermittent driving roller (33). - The draft device according to any one of claim 2 through claim 4, further comprising two belt-supporting rollers (33, 36) arranged at a prescribed interval, wherein the endless belt is wound around the two belt-supporting rollers (33, 36) such that the endless belt is arranged to be elliptical.
- The draft device according to any one of claim 2 through claim 5, further comprising at least three draft roller pairs arranged in a travelling direction of the fiber bundle (8), the three draft roller pairs being a front roller pair (20, 70), a middle roller pair (19, 69), and a third roller pair (17, 67) arranged in this order from downstream in the travelling direction of the fiber bundle (8),
wherein an apron belt (18, 68) is respectively provided for the top roller (19) and the bottom roller (69) of the middle roller pair, and
the cleaning surface of the endless belt as the cleaning member (37) is provided to make contact with the bottom roller (67) of the third roller pair (17, 67). - The draft device according to claim 6, wherein the draft roller pairs are arranged in a direction substantially parallel to the travelling direction of the fiber bundle (8),
the driving source (91) is a motor adapted to drive the bottom roller (66) located most upstream in the travelling direction of the fiber bundle (8), and
the intermittent feeding section (101) is adapted to intermittently feed the cleaning member (37) by receiving power from the motor. - The draft device according to any one of claim 1 through claim 7, further comprising:a draft device main body (7x) adapted to support the draft roller pairs, anda cleaning unit (30) adapted to support the cleaning member (37),wherein the cleaning unit (30) is provided detachably with respect to the draft device main body (7x).
- The draft device according to any one of claim 1 through claim 8, wherein the intermittent feeding section (101) includes:an input rotating body (84) adapted to receive transmission of power from the driving source (91),an output rotating body (33) adapted to drive the cleaning member (37),a swingably-supported reciprocating arm (32),an eccentric portion (85) adapted to integrally rotate with the input rotating body (84),a coupling member (86) adapted to couple the eccentric portion (85) and the reciprocating arm (32), anda one-way clutch (34) provided between the reciprocating arm (32) and the output rotating body (33).
- The draft device according to claim 9, wherein the cleaning unit (30) includes at least the output rotating body (33), the reciprocating arm (32), and the one-way clutch (34).
- A spinning machine comprising:the draft device (7) according to any one of claim 1 through claim 10,a spinning device (9) adapted to produce a spun yarn (10) by spinning the fiber bundle (8) drafted by the draft device (7) using airflow, anda winding device (13) adapted to wind the spun yarn (10) produced by the spinning device (9) into a package (45).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011205278A JP2013067871A (en) | 2011-09-20 | 2011-09-20 | Draft device and spinning machine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2573226A2 EP2573226A2 (en) | 2013-03-27 |
EP2573226A3 EP2573226A3 (en) | 2015-08-05 |
EP2573226B1 true EP2573226B1 (en) | 2017-08-30 |
Family
ID=46397092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12174569.9A Not-in-force EP2573226B1 (en) | 2011-09-20 | 2012-07-02 | Draft device and spinning machine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2573226B1 (en) |
JP (1) | JP2013067871A (en) |
CN (1) | CN103014948B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102618981B (en) * | 2012-02-11 | 2014-07-02 | 东华大学 | Torsion release intermittent yarn feeding device for interrupted composite yarn spinning, method and application |
JP2015101797A (en) * | 2013-11-21 | 2015-06-04 | 村田機械株式会社 | Cleaning device, draft device and spinning unit |
JP2017088326A (en) * | 2015-11-11 | 2017-05-25 | 村田機械株式会社 | Bobbin supply device |
CN105334882B (en) * | 2015-12-03 | 2018-10-02 | 广东溢达纺织有限公司 | Energy-saving travelling wind turbine |
JP2018066084A (en) | 2016-10-19 | 2018-04-26 | 村田機械株式会社 | Spinning machine managing system and managing method |
CN115156114A (en) * | 2022-06-29 | 2022-10-11 | 江苏长江智能制造研究院有限责任公司 | Winding roller hair cleaning equipment and non-woven fabric production system |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB425912A (en) * | 1933-09-23 | 1935-03-25 | English Cotton Sewing Company | Improvements in under clearers for the drawing rollers of machines for the preparation of textile fibres for spinning |
EP0099973B1 (en) * | 1982-07-23 | 1985-09-11 | Maschinenfabrik Rieter Ag | Drawing frame for a spinning machine |
DE3522504A1 (en) * | 1985-06-24 | 1987-01-02 | Kurt Eder | CLEANING DEVICE WITH ROTATING CLEANING CLOTHS FOR STRETCHING TEXTILES IN THE TEXTILE INDUSTRY |
JPH0253920A (en) * | 1988-05-30 | 1990-02-22 | Fuji Deibaisu Kk | Clearer for top roller in spinning machine |
DE3917990A1 (en) * | 1989-06-02 | 1990-12-06 | Fritz Stahlecker | STRETCHER FOR A SPINNING MACHINE |
JP2698968B2 (en) * | 1995-03-30 | 1998-01-19 | 株式会社ムラオ・アンド・カンパニー | Draft roller clearer unit |
TW404992B (en) * | 1997-09-05 | 2000-09-11 | Toyoda Automatic Loom Works | Cleaner for roving apparatus |
CH694591A5 (en) * | 2000-12-20 | 2005-04-15 | Rieter Ag Maschf | A device for cleaning of roll surfaces. |
CN2487749Y (en) * | 2001-08-02 | 2002-04-24 | 东台纺织机械有限责任公司 | Bottom cleaner for roving frame |
DE10249589A1 (en) * | 2002-10-24 | 2004-05-13 | Texparts Gmbh | Drafting system for spinning units |
JP4379599B2 (en) | 2004-07-09 | 2009-12-09 | 村田機械株式会社 | Draft roller cleaning device |
JP2009013550A (en) | 2007-07-09 | 2009-01-22 | Murata Mach Ltd | Cleaner for draft rollers, draft device, and textile machine |
JP2011127238A (en) * | 2009-12-16 | 2011-06-30 | Murata Machinery Ltd | Draft machine and roller unit |
-
2011
- 2011-09-20 JP JP2011205278A patent/JP2013067871A/en not_active Withdrawn
-
2012
- 2012-06-04 CN CN201210181170.5A patent/CN103014948B/en not_active Expired - Fee Related
- 2012-07-02 EP EP12174569.9A patent/EP2573226B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN103014948B (en) | 2016-09-21 |
EP2573226A3 (en) | 2015-08-05 |
JP2013067871A (en) | 2013-04-18 |
CN103014948A (en) | 2013-04-03 |
EP2573226A2 (en) | 2013-03-27 |
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