EP2921577B1 - Dispositif d'étirage et métier à filer - Google Patents

Dispositif d'étirage et métier à filer Download PDF

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Publication number
EP2921577B1
EP2921577B1 EP15159590.7A EP15159590A EP2921577B1 EP 2921577 B1 EP2921577 B1 EP 2921577B1 EP 15159590 A EP15159590 A EP 15159590A EP 2921577 B1 EP2921577 B1 EP 2921577B1
Authority
EP
European Patent Office
Prior art keywords
draft
fiber bundle
control member
fiber
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.)
Active
Application number
EP15159590.7A
Other languages
German (de)
English (en)
Other versions
EP2921577A2 (fr
EP2921577A3 (fr
Inventor
Akihiro Morita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
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Filing date
Publication date
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Publication of EP2921577A2 publication Critical patent/EP2921577A2/fr
Publication of EP2921577A3 publication Critical patent/EP2921577A3/fr
Application granted granted Critical
Publication of EP2921577B1 publication Critical patent/EP2921577B1/fr
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Classifications

    • 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
    • D01H5/20—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by contact with stationary or reciprocating surfaces
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • 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

Definitions

  • the present invention mainly relates to a fiber control member provided to a draft device and adapted to curve a fiber bundle to be drafted by pairs of draft rollers.
  • a fiber control member adapted to curve a transportation path of a sliver may be arranged between pairs of draft rollers arranged next to each other.
  • a draft ratio (a ratio at which the fiber is stretched) can be set to be large by arranging the fiber control member, drafting can be performed using a thick sliver. In a case of using a thick sliver, procurement of materials is facilitated and production efficiency can be improved.
  • Patent Document 1 discloses a draft device provided with this type of fiber control member.
  • Patent Document 1 discloses an art in which the fiber control member (a fiber travelling control member) is provided between a pair of back rollers and a pair of third rollers, or between the pair of back rollers and a pair of second rollers.
  • Patent Document 1 also describes a configuration in which the fiber control member is formed into a shape of a rod-like cylinder and is attached to a main body frame.
  • Patent Document 1 merely discloses a function and a position of the fiber control member and does not describe how to remove the accumulated fly wastes.
  • a fiber control member comprises a first end portion, a fiber bundle curving section adapted to curve a transportation path of a fiber bundle to be drafted by a draft device, the fiber bundle curving section being formed at the first end portion, a second end portion located opposite to the fiber bundle curving section, and a cutout formed at the second end portion, the cutout being cut out towards the first end portion.
  • fly wastes generated at the time of drafting fall from the cutout the fly wastes can be prevented from accumulating around the fiber control member and the draft rollers.
  • a width of the cutout preferably becomes smaller in a direction towards the first end portion.
  • the fly wastes are unlikely to hook onto the cutout, the fly wastes can be more reliably prevented from accumulating.
  • positions of the first end portions at end portions in a longitudinal direction are preferably closer to the second end portion than a position of the first end portion at the fiber bundle curving section.
  • both end portions of the fiber control member are located on a side far from the fiber bundle, the fly wastes can be prevented from accumulating in proximity to end portions of each of the fiber control member and the draft roller in the longitudinal direction.
  • the fiber control member is formed of a plate-like member having preferably a thickness of at least 1.6 mm and at most 2.0 mm.
  • a gap between the fiber control member and the draft roller can be large.
  • the fly wastes can be made to fall from the gap, the fly wastes can be prevented from accumulating.
  • a draft device includes the above-described fiber control member, a draft roller adapted to draft the fiber bundle, and attachment grooves adapted to receive the fiber control member for holding the fiber control member.
  • the fiber control member since the fiber control member is held by merely inserting the fiber control member into the attachment grooves, the fiber control member can be easily attached/removed. Thus, even if the fly wastes have accumulated, the fly wastes can be promptly removed.
  • the draft device preferably includes a draft roller supporting section adapted to support the draft roller.
  • the attachment grooves are formed in the draft roller supporting section.
  • the draft roller supporting section has a function to support the draft roller and a function to hold the fiber control member, the number of components can be reduced.
  • the draft device is preferably configured as follows.
  • the draft roller includes a draft portion at a central portion in an axial direction, the axial direction being substantially perpendicular to a travelling direction of the fiber bundle, and small-diameter portions located at both sides to the draft portion in the axial direction.
  • a width of the fiber bundle curving section is substantially same as a width of the draft portion of the draft roller.
  • the end portions of the fiber control member in the longitudinal direction are arranged to be opposed to the small-diameter portions and are closer to the second end portion than the fiber bundle curving section.
  • the draft roller drafts the fiber bundle by merely the draft portion at the central portion, positions, which are opposed to the small-diameter portions, of the fiber control member can be located away from the fiber bundle, and the fly wastes can be prevented from accumulating in proximity to the end portions of the draft roller in the longitudinal direction.
  • the draft device is configured as follows.
  • the draft device includes a plurality of pairs of the draft rollers arranged in a travelling direction of the fiber bundle between an upstream end and a downstream end of the draft device.
  • Each of the plurality of pairs of the draft rollers includes a top roller and a bottom roller.
  • the fiber control member is arranged between a first bottom roller arranged first from the upstream end of the draft device and a second bottom roller arranged second from the upstream end of the draft device.
  • a spinning machine includes the above-described draft device, a pneumatic spinning device, and a winding device.
  • the pneumatic spinning device is adapted to twist the fiber bundle drafted by the draft device by airflow to produce a spun yarn.
  • the winding device is adapted to wind the spun yarn fed from the pneumatic spinning device around a package.
  • the spinning machine in which the fly wastes are unlikely to accumulate and a yarn breakage is unlikely to occur can be realized.
  • an angle formed by an installation surface and a fiber bundle transporting direction of the draft device is preferably at least 45 degrees and at most 90 degrees.
  • a fine spinning machine 1 illustrated in FIG. 1 includes a large number of spinning units 2 arranged side by side, a yarn joining vehicle 3, a motor box 4, a blower box 95, and a machine control device 90.
  • the machine control device 90 is adapted to intensively control each component provided to the fine spinning machine 1.
  • the machine control device 90 includes a monitor 91 and an input key 92. By an operator performing an appropriate operation with the input key 92, for example, a setting and/or a state of a specific spinning unit 2 or all of the spinning units 2 can be displayed on the monitor 91.
  • each of the spinning units 2 includes a draft device 7, a pneumatic spinning device 9, a yarn accumulating device 14, and a winding device 70 arranged in this order from upstream towards downstream.
  • "Upstream” and “downstream” in the present specification indicate upstream and downstream in a travelling (transporting) direction of a sliver 6 at the time of spinning, a fiber bundle 8, and a spun yarn 10.
  • Each spinning unit 2 is adapted to spin the fiber bundle 8, which is fed from the draft device 7, by the pneumatic spinning device 9 to produce the spun yarn 10, and to wind the spun yarn 10 by the winding device 70 to form a package 45.
  • the draft device 7 is arranged in proximity to an upper end of a housing 5 of the fine spinning machine 1.
  • the draft device 7 is adapted to draft (stretch) the sliver (a fiber bundle) 6 fed from a sliver case (not illustrated) via a sliver guide 20 until a thickness of the sliver 6 becomes a predetermined thickness.
  • the fiber bundle 8 drafted by the draft device 7 is fed to the pneumatic spinning device 9.
  • the draft device 7 will be described later in detail.
  • the pneumatic spinning device 9 is adapted to apply twists to the fiber bundle 8 fed from the draft device 7 to produce the spun yarn 10.
  • a pneumatic spinning device adapted to apply twists to the fiber bundle 8 by use of whirling airflow is employed.
  • the pneumatic spinning device 9 specifically includes a fiber guiding section, a whirling airflow generating nozzle, and a hollow guide shaft body.
  • the fiber guiding section is adapted to guide the fiber bundle 8 fed from the draft device 7 to a spinning chamber formed inside the pneumatic spinning device 9.
  • the whirling airflow generating nozzle is arranged around a path of the fiber bundle 8 and is adapted to generate the whiling airflow in the spinning chamber. With the whirling airflow, a fiber end of the fiber bundle 8 inside the spinning chamber is inverted and whirled.
  • the hollow guide shaft body is adapted to guide the spun yarn 10 that has been produced from the spinning chamber to outside the pneumatic spinning device 9.
  • a yarn quality measuring instrument 12 and a spinning sensor 13 are provided downstream of the pneumatic spinning device 9.
  • the spun yarn 10 spun by the pneumatic spinning device 9 passes the yarn quality measuring instrument 12 and the spinning sensor 13.
  • the yarn quality measuring instrument 12 is adapted to monitor a thickness of the travelling spun yarn 10 with an optical sensor, which is not illustrated. When detecting a yarn defect (a portion of the spun yarn 10 having abnormality in thickness or the like) in the spun yarn 10, the yarn quality measuring instrument 12 transmits a yarn defect detection signal to a unit controller (not illustrated) .
  • the yarn quality measuring instrument 12 is not limited to the optical sensor and may be a configuration in which the thickness of the spun yarn 10 is monitored by a capacitance sensor, for example.
  • the yarn quality measuring instrument 12 may detect a foreign substance in the spun yarn 10 as a yarn defect.
  • the spinning sensor 13 is arranged immediately downstream of the yarn quality measuring instrument 12.
  • the spinning sensor 13 is capable of detecting a tension of the spun yarn 10 between the pneumatic spinning device 9 and the yarn accumulating device 14.
  • the spinning sensor 13 transmits the detected tension to the unit controller.
  • the unit controller detects an abnormal portion such as a weak yarn by monitoring the tension detected by the spinning sensor 13.
  • the yarn accumulating device 14 is arranged downstream of the yarn quality measuring instrument 12 and the spinning sensor 13. As illustrated in FIG. 2 , the yarn accumulating device 14 includes a yarn accumulating roller 15 and a motor 16 adapted to rotationally drive the yarn accumulating roller 15.
  • the yarn accumulating roller 15 is capable of temporarily accumulating the spun yarn 10 by winding a predetermined amount of the spun yarn 10 around an outer peripheral surface thereof.
  • the spun yarn 10 can be drawn from the pneumatic spinning device 9 at a predetermined speed and be transported to downstream.
  • the yarn accumulating device 14 can function as a kind of buffer.
  • a defect (a slackening of the spun yarn 10, for example) in which a spinning speed in the pneumatic spinning device 9 and a winding speed (a speed of the spun yarn 10 wound around the package 45) are not correspond to each other for some reason can be resolved.
  • the winding device 70 includes a cradle arm 71 supported in a swingable manner about a support shaft 73.
  • the cradle arm 71 is capable of supporting a bobbin 48 in a rotatable manner, around which the spun yarn 10 is to be wound.
  • the winding device 70 includes a winding drum (a contact roller) 72 and a traverse device 75. Furthermore, the winding device 70 includes a winding drum driving motor, which is not illustrated. When a driving force of the winding drum driving motor is transmitted, the winding drum 72 is rotated while being in 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 engaging with the spun yarn 10.
  • the winding device 70 drives the winding drum 72 by the winding drum driving motor while reciprocating the traverse guide 76 by a drive means, which is not illustrated. Accordingly, the winding device 70 rotates the package 45 being in contact with the winding drum 72 and winds the spun yarn 10 around the package 45 while traversing the spun yarn 10.
  • the yarn joining vehicle 3 includes a yarn joining device 43, a suction pipe 44, and a suction mouth 46. After a yarn breakage or a yarn cut has occurred in a certain spinning unit 2, the yarn joining vehicle 3 travels to such a spinning unit 2 on a rail 41 and stops.
  • the suction pipe 44 sucks and catches the spun yarn 10 fed from the pneumatic spinning device 9 and guides the caught spun yarn 10 to the yarn joining device 43 while vertically swinging with an axis as a center.
  • the yarn joining device 43 joins the guided spun yarns 10 together.
  • the draft device 7 includes the tubular sliver guide 20 into which the fiber bundle 6 is introduced, and a plurality of pairs of draft rollers include bottom rollers and top rollers that are respectively facing each other.
  • the bottom rollers are located on a back side (a lower side) of the fine spinning machine 1
  • the top rollers are located on a front side (an upper side) of the fine spinning machine 1.
  • the draft device 7 of the present embodiment is configured as a so-called four-wire draft device provided with a pair of back rollers, a pair of third rollers, a pair of middle rollers, and a pair of front rollers in this order from upstream.
  • an angle formed by an installation surface of the fine spinning machine 1 (a horizontal surface) and a sliver transporting direction (a yarn path) of the draft device 7 is at least 45 degrees and at most 90 degrees.
  • a plurality of the top rollers are a back top-roller 21, a third top-roller 22, a middle top-roller 24 with an apron belt 23 provided, and a front top-roller 25 in this order from upstream.
  • a plurality of the bottom rollers are a back bottom-roller 26, a third bottom-roller 27, a middle bottom-roller 28 with an apron belt 23 provided, and a front bottom-roller 29 in this order from upstream.
  • Each of the top rollers 21, 22, 24, and 25 is a roller of which outer peripheral surface is formed of an elastic member such as rubber or the like. Each of the top rollers 21, 22, 24, and 25 is supported in a rotatable manner with an axial line thereof as a center via bearings (not illustrated) or the like. Each of the bottom rollers 26, 27, 28, and 29 is a metallic roller and is adapted to be rotationally driven with an axial line thereof as a center.
  • the draft device 7 includes an urging means (not illustrated) adapted to urge each of the top rollers 21, 22, 24, and 25 towards the respectively opposing bottom rollers 26, 27, 28, and 29. Accordingly, the outer peripheral surfaces of the top rollers 21, 22, 24, and 25 respectively make contact with outer peripheral surfaces of the bottom rollers 26, 27, 28, and 29 in an elastic manner.
  • the top rollers 21, 22, 24, and 25 that respectively make contact with the bottom rollers 26, 27, 28, and 29 in an opposing manner are rotated accompanying the rotation of the bottom rollers.
  • the draft device 7 transports the fiber bundle 6 towards downstream by nipping (sandwiching) the fiber bundle 6 between the rotating top rollers 21, 22, 24, and 25 and the rotating bottom rollers 26, 27, 28, and 29.
  • a configuration is made such that a pair of the draft rollers located more downstream is rotated faster.
  • the fiber bundle 6 is thus stretched (drafted) while being transported between a pair of the draft rollers and a pair of the draft rollers, and accordingly thickness of the fiber bundle 6 becomes thinner as goes downstream.
  • the fiber bundle 8 drafted to a desired thickness can be fed to the pneumatic spinning device 9. Accordingly, the spun yarn 10 of a desired yarn count (thickness) can be spun in the pneumatic spinning device 9.
  • FIGS. 3 through 5 are each a view illustrating only a portion around the back bottom-roller 26 and the third bottom-roller 27 of the draft roller.
  • the back bottom-roller 26 is formed of a draft portion 26a and small-diameter portions (reduced-diameter portions) 26b.
  • the draft portion 26a is located at a central portion of the back bottom-roller 26 in an axial direction thereof. As a whole, an outer diameter of the draft portion 26a is constant.
  • the sliver 6 is drafted by sandwiching the sliver 6 with the draft portion 26a of the back bottom-roller 26 and a draft portion of the back top-roller 21.
  • the small-diameter portions 26b are portions respectively connected to both ends of the draft portion 26a in the axial direction.
  • the small-diameter portions 26b are portions of which diameters become small and again become large as located away from the draft portion 26a.
  • the third bottom-roller 27 is formed of a draft portion 27a and small-diameter portions 27b.
  • the other bottom rollers 28, 29 are the same.
  • the draft device 7 includes a draft roller supporting section 60.
  • the draft roller supporting section 60 is formed of two wall-like members 60a and 60b arranged in an opposing manner with a predetermined interval therebetween.
  • the wall-like members 60a and 60b are respectively adapted to hold both end portion of the bottom roller (specifically, the small-diameter portions 26b, the small-diameter portions 27b) .
  • the wall-like member 60a adapted to hold the back bottom-roller 26 and the wall-like member 60a adapted to hold the third bottom-roller 27 are different.
  • the wall-like member 60b adapted to hold the back bottom-roller 26 and the wall-like member 60b adapted to hold the third bottom-roller 27 are also different.
  • the two wall-like members 60a may be integrated.
  • the two wall-like members 60b may be integrated.
  • An attachment groove 61 is formed in each region in proximity to each portion of the wall-like members 60a and 60b where the back bottom-roller 26 is held.
  • the attachment grooves 61 are formed to vertically cross an arrangement direction of the bottom rollers.
  • the attachment grooves 61 may be formed in a member provided separately from the wall-like members 60a and 60b.
  • the fiber control member 50 is received and held by the attachment grooves 61.
  • the fiber control member 50 is formed of a plate-like member of which thickness is, for example, from 1.6 mm to 2.0 mm.
  • the fiber control member 50 is plated by hard chrome or the like to exert abrasion resistance.
  • the fiber control member 50 has a sliver curving section (a fiber bundle curving section) 51, a cutout 52, and lateral end portions 53 including attachment portions 53a.
  • a side on which the fiber control member 50 makes contact with the sliver 6 (a side in which the sliver curving section 51 is formed) may be referred to as a sliver side, and a side opposite thereto may be referred to an opposite-sliver side.
  • the sliver side may be referred to as the first end portion
  • the opposite-sliver side may be referred to as a second end portion.
  • the sliver curving section 51 is formed on the sliver side (the first end portion) of the fiber control member 50.
  • the sliver curving section 51 is formed at a central portion (a portion between the lateral end portions 53 or where the end portions 53 are not formed) of the fiber control member 50 in a longitudinal direction thereof (an axial direction of the bottom rollers).
  • a length of the sliver curving section 51 in the longitudinal direction thereof is substantially the same as the lengths of the draft portions 26a and 27a.
  • the sliver curving section 51 is a portion formed by folding the plate-like member a plurality of times so as to curve towards the back bottom-roller 26 (upstream in the transporting direction of the sliver 6). Since outer surfaces of the folded portions make contact with the sliver 6, the sliver curving section 51 curves a transportation path of the sliver 6 ( FIG. 5 ). By providing the fiber control member 50, the sliver 6 can be prevented from falling off. Furthermore, even if a draft ratio is set to be large, the sliver 6 can be drafted by the draft device 7.
  • a gap L ( FIG. 5 ) between the sliver curving section 51 and the back bottom-roller 26 is preferably at least 1.2 mm and at most 2.0 mm.
  • the cutout 52 is formed at the second end portion (the opposite-sliver side) by cutting out the plate-like member from the end portion on the opposite-sliver side towards the sliver side (in other words, to be close to the first end portion) .
  • the cutout 52 is formed at the central portion of the fiber control member 50 in the longitudinal direction (the portion between the end portions 53 or where the end portions 53 are not formed) .
  • a size (a width, a length) of the cutout 52 in a longitudinal direction thereof is smaller than a size of the sliver curving section 51 in the longitudinal direction.
  • L1 is greater than L2.
  • the width of the cutout 52 becomes smaller or decreases from the second end portion towards the first end portion (from the opposite-sliver side towards the sliver side) .
  • a change rate of the width of the cutout 52 is substantially constant.
  • fly wastes generated at the time of drafting are unlikely to fall under influence of gravity and are likely to accumulate on the fiber control member 50 (around an inner side of a curved portion of the sliver curving section 51, in particular) . Since the cutout 52 is formed to the fiber control member 50 of the present embodiment, the fly wastes can be made to fall and are unlikely to be accumulated. Thus, while benefiting from an advantage (improvement in a draft speed) brought by increasing the sliver transporting speed, a disadvantage (a tendency of the fly wastes to accumulate) can be resolved.
  • the attachment portions 53a are respectively formed at the both lateral ends of the fiber control member 50 in the longitudinal direction.
  • the sliver side portions 53b of the attachment portions 53a are located closer to the opposite-sliver side than the sliver curving section 51. Accordingly, the accumulated fly wastes can be made to fall from portions (recesses between the sliver curving section 51 and the attachment portions 53a, in particular) around the attachment portions 53a.
  • the sliver side portions 53b of the attachment portions 53a are located further on the sliver side than sliver side portions 53c of portions 53d of the end portions 53 between the sliver curving section 51 and the attachment portions 53a.
  • Hemispherical protrusions 53e that slightly protrude in a thickness direction (see the arrow T in Fig. 6B ) are formed on the attachment portions 53a.
  • the fiber control member 50 is attached to the draft device 7.
  • the widths of the attachment grooves 61 are nearly equal to thicknesses of the attachment portions 53a.
  • the attachment portions 53a can be held by the draft roller supporting section 60 by merely being inserted into the attachment grooves 61.
  • the hemispherical protrusions 53e are optional and may be formed so that the thickness of the attachment portions 53a is adjusted to the width of the attachment grooves 61.
  • the hemispherical protrusions 53e may also be formed in a direction opposite to the illustrated direction.
  • the fiber control member 50 For removing the fiber control member 50, an operator is merely required to grip and pull the fiber control member 50 upward, e.g. at the end portions 53. In this manner, by configuring the fiber control member 50 to be removable through a one-touch operation, even if the fly wastes are accumulated on the fiber control member 50, the fly wastes can be easily removed.
  • the above-described shape of the cutout 52 is an example, and may be appropriately modified.
  • the width of the cutout 52 may be constant. In this case, the cutout 52 may be easily formed.
  • a portion of the cutout 52 may be formed in an arc shape. In this case, accumulation of the fly wastes can be more reliably prevented by preventing the fly wastes from hooking onto the cutout 52.
  • the sliver curving section 51 that curves the transportation path of the sliver 6 drafted by the pairs of the draft rollers is formed at the end portion of the fiber control member 50 of the present embodiment.
  • the portion where the sliver curving section 51 is formed (the end portion on the side where the sliver curving section 51 is formed) is referred to as the first end portion, and the portion (the end portion) located opposite to the sliver curving section 51 is referred to as the second end portion.
  • the cutout 52 that has been cut out towards the first end portion is formed at the second end portion of the fiber control member 50.
  • the fly wastes generated at the time of drafting fall from the cutout 52, the fly wastes can be prevented from accumulating around the fiber control member 50 and the draft roller. A yarn breakage that may occur in association with accumulation of the fly wastes thus can be prevented from occurring.
  • the width of the cutout 52 of the fiber control member 50 of the present embodiment becomes smaller or decreases in a direction towards the first end portion.
  • the fly wastes are unlikely to hook onto the cutout 52, the fly wastes can be more reliably prevented from accumulating.
  • the attachment grooves 61 that receive the fiber control member 50 for holding the fiber control member 50 are formed in the draft device 7 of the present embodiment.
  • the fiber control member 50 since the fiber control member 50 is held merely by being inserted into the attachment grooves 61, the fiber control member 50 can be easily attached/removed. Thus, even if the fly wastes accumulates, the fly wastes can be promptly removed.
  • a width of the sliver curving section 51 of the present embodiment is substantially the same as the widths of the draft portions 26a and 27a of the draft roller (specifically, the back bottom-roller 26 and the third bottom-roller 27). Portions, which are respectively opposed to the small-diameter portions 26b and 27b, of the end portions 53 of the fiber control member 50 are formed on a side further away from the sliver 6 than portions respectively opposed to the draft portions 26a and 27a.
  • the draft device 7 drafts the sliver 6 with the draft portions 26a, 27a at the central portion of the bottom rollers 26, 27.
  • the fly wastes can be prevented from accumulating in proximity to end portions of the bottom rollers 26, 27 in a longitudinal direction thereof.
  • the fiber control member 50 is arranged between the back bottom-roller 26 and the third bottom-roller 27.
  • the fiber control member 50 may be arranged between the third bottom-roller 27 and the middle bottom-roller 28.
  • top rollers and the bottom rollers of the draft device 7 is an example.
  • a positional relationship between the top rollers and the bottom rollers, or the number of the pairs of the draft rollers may be appropriately modified.
  • a shape of the fiber control member 50 may be any, and may be appropriately modified.
  • the sliver curving section 51 is not limited to a shape formed by curving a plate-like member.
  • the shape of the cutout 52 and a range in which the cutout 52 is formed are arbitrary, and the cutout 52 may be another shape other than the shapes described in the above-described embodiment and the variant embodiment.
  • a method of attaching the fiber control member 50 is not limited to a one-touch method of merely inserting, and may be a configuration to fix by a bolt or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (8)

  1. Dispositif d'étirage (7) comprenant:
    une pluralité de paires de rouleaux d'étirage disposés dans une direction de déplacement d'un faisceau de fibres (6) entre une extrémité amont et une extrémité aval du dispositif d'étirage (7), où chacune des paires de la pluralité de rouleaux d'étirage comporte un rouleau supérieur (21, 22, 24, 25) et un rouleau inférieur (26, 27, 28, 29), et
    un élément de commande de fibre (50), comprenant:
    une première partie d'extrémité;
    un segment de courbure de faisceau de fibres (51) adapté pour courber un trajet de transport du faisceau de fibres (6) à étirer par un dispositif d'étirage (7), le segment de courbure de faisceau de fibres (51) étant formé sur la première partie d'extrémité;
    une deuxième partie d'extrémité située opposée au segment de courbure de faisceau de fibres (51); et
    une découpe (52) formée dans la deuxième partie d'extrémité, la découpe (52) étant découpée en direction de la première partie d'extrémité,
    caractérisé par le fait que
    par la découpe, les déchets volants peuvent être empêchés de s'accumuler autour de l'élément de commande de fibre et des rouleaux d'étirage,
    le dispositif d'étirage comprend par ailleurs des rainures de fixation adaptées pour recevoir l'élément de commande de fibre destinées à maintenir l'élément de commande de fibre, et
    par le fait que l'élément de commande de fibre (50) est formé d'un élément en forme de plaque et est disposé entre un premier rouleau inférieur (26) disposé en premier lieu à partir de l'extrémité amont du dispositif d'étirage et un deuxième rouleau inférieur (27) disposé en deuxième lieu à partir de l'extrémité amont du dispositif d'étirage,
    le segment de courbure de faisceau de fibres (51) est une partie formée en pliant l'élément en forme de plaque, et
    l'élément de commande de fibre (50) est disposé de sorte qu'une surface extérieure de la partie pliée du segment de courbure de faisceau de fibres (51) entre en contact avec le faisceau de fibres (6), le segment de courbure de faisceau de fibres (51) courbant ainsi le trajet de transport du faisceau de fibres (6), et où l'élément de commande de fibres empêche le faisceau de fibres de tomber.
  2. Dispositif d'étirage (7) selon la revendication 1, dans lequel une largeur de la découpe (52) devient plus petite dans une direction vers la première partie d'extrémité.
  3. Dispositif d'étirage (7) selon la revendication 1 ou la revendication 2, dans lequel les extrémités latérales de la première partie d'extrémité dans une direction longitudinale sont plus proches de la deuxième partie d'extrémité que du segment de courbure de faisceau de fibres (51).
  4. Dispositif d'étirage (7) selon l'une quelconque de la revendication 1 à la revendication 3, dans lequel l'élément en forme de plaque présente une épaisseur d'au moins 1,6 mm et de tout au plus 2,0 mm.
  5. Dispositif d'étirage (7) selon l'une quelconque de la revendication 1 à la revendication 4, comprenant un segment de support de rouleau d'étirage (60) adapté pour supporter les rouleaux d'étirage,
    dans lequel les rainures de fixation (61) sont formées dans le segment de support de rouleaux d'étirage (60).
  6. Dispositif d'étirage (7) selon l'une quelconque de la revendication 1 à la revendication 5,
    dans lequel le rouleau d'étirage comporte une partie d'étirage (26a, 27a) située dans une partie centrale dans la direction longitudinale, la direction longitudinale étant perpendiculaire à la direction de déplacement du faisceau de fibres (6), et des parties de petit diamètre (26b, 27b) situées aux deux extrémités de la partie d'étirage (26a, 27a),
    une largeur du segment de courbure de faisceau de fibres (51) est identique à une largeur de la partie d'étirage (26a, 27a), et
    les parties d'extrémité (53) de l'élément de commande de fibre (50) dans la direction longitudinale sont disposées de manière à être opposées aux parties de petit diamètre (26b, 27b).
  7. Métier à filer (1) comprenant:
    le dispositif d'étirage (7) selon l'une quelconque de la revendication 1 à la revendication 6;
    un dispositif de filature pneumatique (9) adapté pour tordre le faisceau de fibres (8) étiré par le dispositif d'étirage (7) par un flux d'air pour produire un fil filé (10); et
    un dispositif bobinage (70) adapté pour enrouler le fil filé (10) alimenté depuis le dispositif de filature pneumatique (9) autour d'un paquet (45).
  8. Métier à filer (1) selon la revendication 7, dans lequel
    un angle formé par une surface d'installation du métier à filer (1) et une direction de transport de faisceau de fibres du dispositif d'étirage (7) est d'au moins 45 degrés et de tout au plus 90 degrés.
EP15159590.7A 2014-03-19 2015-03-18 Dispositif d'étirage et métier à filer Active EP2921577B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014056396A JP2015178688A (ja) 2014-03-19 2014-03-19 繊維制御部材、ドラフト装置、及び紡績機

Publications (3)

Publication Number Publication Date
EP2921577A2 EP2921577A2 (fr) 2015-09-23
EP2921577A3 EP2921577A3 (fr) 2016-05-04
EP2921577B1 true EP2921577B1 (fr) 2019-08-28

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JP (1) JP2015178688A (fr)
CN (1) CN104928814B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018204121A (ja) * 2017-05-30 2018-12-27 村田機械株式会社 ローラユニット、ドラフト装置及び紡績機
IT201800010209A1 (it) * 2018-11-09 2020-05-09 Savio Macch Tessili Spa Apparato e metodo di stiro per macchine di filatura ad aria con alimentazioni multiple
DE102019115905A1 (de) * 2019-06-12 2020-12-17 Saurer Intelligent Technology AG Streckwerkeinheit mit einem Belastungsträger sowie Belastungsträger für eine Streckwerkeinheit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450251A (en) * 1945-04-13 1948-09-28 Casablancas High Draft Co Ltd Collector for textile drafting mechanisms

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB182507A (en) * 1921-02-05 1922-07-05 Arthur Cecil Butler Improvements in mechanism for drawing or drafting cotton, cotton waste wool and other fibrous materials
US1990613A (en) * 1934-06-11 1935-02-12 Piron Fernand Spinning machine
JPS4420501Y1 (fr) * 1967-04-12 1969-09-02
JPH1025628A (ja) * 1996-07-09 1998-01-27 Howa Mach Ltd 紡機のプレッシャーバー
EP1526194A3 (fr) * 2003-10-21 2006-06-21 Maschinenfabrik Rieter Ag Métier à filer comprenant un dispositif de condensation
JP2006200069A (ja) 2005-01-20 2006-08-03 Murata Mach Ltd 空気式精紡機におけるドラフト装置
DE102006041770A1 (de) * 2006-09-04 2008-03-06 Maschinenfabrik Rieter Ag Faserverdichtungsvorrichtung in einem Steckwerk einer Spinnmaschine
CN201010722Y (zh) * 2006-12-18 2008-01-23 上海二纺机股份有限公司 环锭细纱机的一种紧密纺纱装置
CN101550620B (zh) * 2009-05-14 2011-03-30 童云章 一种专用于棉赛络纺的集合器组件

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450251A (en) * 1945-04-13 1948-09-28 Casablancas High Draft Co Ltd Collector for textile drafting mechanisms

Also Published As

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CN104928814B (zh) 2019-10-18
JP2015178688A (ja) 2015-10-08
EP2921577A2 (fr) 2015-09-23
EP2921577A3 (fr) 2016-05-04
CN104928814A (zh) 2015-09-23

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