EP3514275A1 - Zusammenführungsstruktur für saugrohre sowie garnwickeleinheit, spinnmaschine und textilmaschine damit - Google Patents

Zusammenführungsstruktur für saugrohre sowie garnwickeleinheit, spinnmaschine und textilmaschine damit Download PDF

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Publication number
EP3514275A1
EP3514275A1 EP19152088.1A EP19152088A EP3514275A1 EP 3514275 A1 EP3514275 A1 EP 3514275A1 EP 19152088 A EP19152088 A EP 19152088A EP 3514275 A1 EP3514275 A1 EP 3514275A1
Authority
EP
European Patent Office
Prior art keywords
suction pipe
suction
yarn
connection part
pipe
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.)
Withdrawn
Application number
EP19152088.1A
Other languages
English (en)
French (fr)
Inventor
Yohei OKAZAKI
Kosuke IJIMA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Machinery Ltd filed Critical Murata Machinery Ltd
Publication of EP3514275A1 publication Critical patent/EP3514275A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • D01H11/005—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/702—Arrangements for confining or removing dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/86—Arrangements for taking-up waste material before or after winding or depositing
    • B65H54/88—Arrangements for taking-up waste material before or after winding or depositing by means of pneumatic arrangements, e.g. suction guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present disclosure relates to a merging structure for suction pipes, and a yarn winding unit, a spinning machine and textile machinery including the same.
  • Textile machinery such as a yarn winding machine
  • a collecting device to collect fiber waste such as waste yarn and fluff produced during operation by sucking the fiber waste.
  • Patent Literature 1 Japanese Unexamined Patent Publication No. 2013-67873 discloses a spinning machine (textile machinery) including a spinning unit (yarn winding unit) capable of removing fiber waste produced in a yarn storing roller by sucking the fiber waste with a suction mechanism.
  • one suction pipe for sucking fiber waste may be merged with another suction pipe to collect fiber waste into a common collecting chamber.
  • a suction flow in one suction pipe may obstruct a suction flow in the other suction pipe.
  • the merging structure for suction pipes is therefore required to have a configuration that can smoothly collect fiber waste .
  • a merging structure for suction pipes sucks fiber waste in textile machinery.
  • the merging structure for suction pipes includes a first suction pipe configured to channel a suction flow for sucking the fiber waste, a second suction pipe configured to communicate with the first suction pipe to channel the suction flow, a third suction pipe configured to communicate with the first suction pipe to channel the suction flow, the third suction pipe being a member separate from the second suction pipe, and a connection part connected with the first suction pipe, the second suction pipe, and the third suction pipe to merge a downstream-side end in a direction in which the suction flow flows in the second suction pipe and a downstream-side end in a direction in which the suction flow flows in the third suction pipe with an upstream-side end in a direction in which the suction flow flows in the first suction pipe.
  • Part of an inner surface forming an interior space of the connection part has a planar part that is a flat surface.
  • the second suction pipe is connected to the planar part
  • a cross-sectional area of the interior space of the connection part can be sufficiently ensured, and the amount of protrusion of the second suction pipe in the interior space of the connection part can be reduced or the protrusion can be eliminated.
  • This configuration can prevent or reduce clogging with fiber waste due to the reduced cross-sectional area.
  • the suction flow coming from the second suction pipe and the suction flow coming from the third suction pipe can merge in the interior space of the connection part without obstructing the suction flow by the protrusion of the second suction pipe, thereby enabling smooth collecting of fiber waste.
  • the first suction pipe, the second suction pipe, and the third suction pipe may be connected to the connection part from directions different from each other.
  • fiber waste can be smoothly collected even in the merging structure in which three suction pipes are connected from directions different from each other.
  • the first suction pipe, the second suction pipe, and the third suction pipe in the connection part may have different pipe characteristics from each other defined by at least one of a hollow cross-sectional area and a hollow cross-sectional shape.
  • fiber waste can be smoothly collected even in the merging structure in which the pipe characteristics of three suction pipes are different from each other.
  • the first suction pipe, the second suction pipe, the third suction pipe, and the connection part may be formed with members different from each other.
  • the merging structure can be readily formed by connecting the members to each other.
  • the merging structure for suction pipes may be disposed in textile machinery including a plurality of yarn winding units each configured to wind yarn to form a package and a suction duct connected to a suction source and extended along an arrangement direction of the yarn winding units.
  • the first suction pipe of each of the yarn winding units may be connected to the suction duct.
  • a cross section of an interior space in the connection part as viewed from a connecting direction of the first suction pipe may be formed in a D shape.
  • a cross-sectional area of the interior space of the connection part orthogonal to the connecting direction of the first suction pipe can be sufficiently ensured, and the amount of protrusion of the second suction pipe in the interior space of the connection part can be reduced.
  • a cross section of an interior space in the connection part as viewed from a connecting direction of the first suction pipe may be formed in a D shape with a linear part and an arc-shaped part.
  • An axial line position of the second suction pipe at a connecting position of the second suction pipe to the connection part and a central position in a longitudinal direction in the linear part may be shifted from each other in the longitudinal direction.
  • the axial line position at the connecting position of the second suction pipe is shifted from the center, causing a suction flow in the form of a large vortex in the interior space of the connection part.
  • the suction flow coming from the second suction pipe and the suction flow coming from the third suction pipe smoothly merge in the interior space of the connection part, thereby enabling smooth collecting of fiber waste.
  • a ratio between a largest cross-sectional area and a smallest cross-sectional area may be 1: 6 or more to 1: 68 or less.
  • the amount of protrusion of one pipe into the merging space can be reduced, thereby reducing merging turbulence in the merging space.
  • the first suction pipe, the second suction pipe, and the third suction pipe may be cylindrical pipes.
  • a ratio between a largest inner diameter and a smallest inner diameter may be 1:2 or more to 1:8 or less.
  • the inner diameter is a diameter in the hollow portion of each pipe.
  • the amount of protrusion of one pipe into the merging space can be reduced, thereby reducing merging turbulence in the merging space.
  • an axial line direction of the first suction pipe at a connecting position to the connection part and an axial line direction of the third suction pipe at a connecting position to the connection part may have a component in an identical direction.
  • An axial line direction of the second suction pipe at a connecting position to the connection part may form an angle of 45 degrees or more relative to the component in the identical direction.
  • the merging turbulence can be reduced by applying the suction pipes according to an aspect of the present disclosure.
  • the axial line direction of the second suction pipe at the connecting position to the connection part may be vertical to the component in the identical direction.
  • the merging turbulence can be reduced by applying the suction pipes according to an aspect of the present disclosure.
  • an angle of intersection of an axial line direction of the third suction pipe at a connecting position to the connection part and the axial line direction of the connection part may be 25 degrees or less.
  • the connecting direction of the first suction pipe (the outflow direction of the suction flow to the first suction pipe) and the connecting direction of the third suction pipe (the inflow direction of the suction flow from the third suction pipe) come close to each other to facilitate the flow of fiber waste from the third suction pipe to the first suction pipe.
  • the flow from the third suction pipe easily flows toward the first suction pipe without colliding with the inner peripheral surface of the first suction pipe or the inner surface of the connection part (the flow from the third suction pipe joins the flow to the first suction pipe before colliding with the inner peripheral surface or the inner surface) .
  • the impurity refers to impurity other than fiber waste, such as dust and dirt.
  • the third suction pipe when viewed from a connecting direction of the second suction pipe, the third suction pipe may be disposed on one side in a right-to-left direction of the second suction pipe, and the third suction pipe may be connected to the connection part such that an extended straight line in a connecting direction of the third suction pipe crosses an inner peripheral surface of the first suction pipe or an inner surface of the connection part on the other side in the right-to-left direction.
  • the connecting direction of the first suction pipe and the connecting direction of the third suction pipe come close to each other to facilitate the flow of fiber waste from the third suction pipe to the first suction pipe.
  • the angle difference between the connecting direction of the first suction pipe and the connecting direction of the third suction pipe is small, the flow from the third suction pipe easily flows toward the first suction pipe without colliding with the inner peripheral surface of the first suction pipe or the inner surface of the connection part. As a result, deposition of impurity in the air at a place of collision can be prevented.
  • the angle difference between the connecting direction of the first suction pipe and the connecting direction of the third suction pipe can be reduced even when there are limitations in space or design dimensions.
  • the merging structure for suction pipes may be disposed in a yarn winding unit including a yarn feeding device configured to feed yarn, a winding device configured to wind the yarn fed from the yarn feeding device to form a package, and a yarn storing device configured to store the yarn between the yarn feeding device and the winding device.
  • the second suction pipe may communicate with a first suction inlet configured to suck fiber waste from a portion that stores the yarn in the yarn storing device.
  • the third suction pipe may communicate with a second suction inlet disposed above a guide part for guide the yarn, the second suction inlet disposed between the winding device and the yarn feeding device.
  • the merging structure for suction pipes with this configuration fiber waste can be smoothly collected even when the second suction pipe for sucking fiber waste produced in the yarn storing device and the third suction pipe for sucking fiber waste deposited on the guide part are merged for sucking.
  • a yarn winding unit includes the merging structure for suction pipes described above, a yarn feeding device configured to feed yarn, a winding device configured to wind the yarn fed from the yarn feeding device to form a package, and a yarn storing device configured to store the yarn between the yarn feeding device and the winding device.
  • the second suction pipe communicates with a first suction inlet configured to suck fiber waste from a portion that stores the yarn in the yarn storing device.
  • fiber waste can be smoothly collected even when the second suction pipe for sucking fiber waste produced in the yarn storing device and the third suction pipe are merged for sucking.
  • the third suction pipe may communicate with a second suction inlet disposed above a guide part for guide the yarn, the second suction inlet disposed between the winding device and the yarn feeding device.
  • fiber waste can be smoothly collected even when the second suction pipe for sucking fiber waste produced in the yarn storing device and the third suction pipe for sucking fiber waste deposited on the guide part are merged for sucking.
  • a spinning machine includes the merging structure for suction pipes described above, a drafting device configured to draft a fiber bundle, an air spinning device configured to twist the fiber bundle drafted by the drafting device to form yarn, a winding device configured to wind the yarn formed by the air spinning device to form a package, and a yarn storing device configured to store the yarn between the air spinning device and the winding device.
  • the second suction pipe communicates with a first suction inlet configured to suck fiber waste from a portion that stores the yarn in the yarn storing device. In the spinning machine with this configuration, fiber waste can be smoothly collected even when the second suction pipe for sucking fiber waste produced in the yarn storing device and the third suction pipe are merged for sucking.
  • Textile machinery include the merging structure for suction pipes described above, a plurality of yarn winding units each configured to wind yarn to form a package, and a suction duct connected to a suction source and extended along an arrangement direction of the yarn winding units.
  • the first suction pipe of each of the yarn winding units is connected to the suction duct.
  • fiber waste can be smoothly collected.
  • a spinning machine 1 includes a plurality of spinning units (yarn winding unit) 2, a yarn joining cart 3, a doffing cart (not illustrated in the figure), a first end frame 4, a suction duct 42, and a second end frame 5.
  • a plurality of spinning units 2 are arranged in a row. Each spinning unit 2 forms yarn Y and winds the yarn into a package P.
  • the yarn joining cart 3 performs a yarn joining operation in the spinning unit 2.
  • the doffing cart doffs the package P and supplies a new bobbin B to the spinning unit 2.
  • the first end frame 4 accommodates, for example, a collecting device to collect fiber waste formed in the spinning unit 2.
  • the suction duct 42 is connected to a suction part 41a serving as a suction source and is extended along the arrangement direction of a plurality of spinning units 2.
  • the suction duct 42 is connected to one end (downstream-side end) 43a of a first suction pipe 43 provided for each of the spinning units 2 described later (see FIG. 6 ).
  • the second end frame 5 accommodates, for example, an air supplypart to regulate the air pressure of compressedair (air) supplied to the spinning machine 1 and supply the air to each part in the spinning machine 1 and a drive motor for supplying motive power to each part in the spinning unit 2.
  • the second end frame 5 includes a machine control device 5a, a display screen 5b, and an input key 5c.
  • the machine control device 5a centrally manages and controls each part in the spinning machine 1.
  • the display screen 5b can display information on the settings and/or the state of the spinning unit 2. An operator can make a setting operation for the spinning unit 2 by performing an appropriate operation using the input key 5c.
  • Each spinning unit 2 includes, in order from the upstream side in the traveling direction of yarn Y, a drafting device 6, an air spinning device 7, a yarn monitoring device 8, a tension sensor 9, a yarn storing device 11, a waxing device 12, and a winding device 13.
  • a unit controller 10 is provided every predetermined number of spinning units 2 to control the operation of the spinning units 2.
  • the drafting device 6 and the air spinning device 7 function as yarn feeding devices for feeding yarn Y.
  • the drafting device 6 drafts sliver (fiber bundle) S.
  • the air spinning device 7 twists the fiber bundle F drafted by the drafting device 6 using a swirl air flow to form yarn Y.
  • the yarn storing device 11 is installed between the air spinning device 7 and the winding device 13.
  • the yarn storing device 11 includes an electric motor 11a, a yarn storing roller 11b, and a hooking member 11c.
  • the yarn storing roller 11b is formed in a cylindrical shape and stores yarn Y wound around the outer peripheral surface thereof.
  • the hooking member 11c is a member for winding the hooked yarn Y around the yarn storing roller 11b and is provided at the front end (downstream-side end) of the yarn storing roller 11b.
  • the yarn storing device 11 has the function of stably drawing yarn Y from the air spinning device 7, the function of preventing slacking of yarn Y by storing yarn Y fed from the air spinning device 7, for example, during a yarn joining operation by the yarn joining cart 3, and the function of preventing variation in tension of yarn Y on the downstream side of the yarn storing device 11 from propagating to the air spinning device 7.
  • the waxing device 12 applies wax to yarn Y between the yarn storing device 11 and the winding device 13.
  • the winding device 13 winds yarn Y supplied from the drafting device 6 and the air spinning device 7 serving as yarn feeding devices around a bobbin B to form a package P.
  • the yarn monitoring device 8 monitors information on traveling yarn Y between the air spinning device 7 and the yarn storing device 11 and detects whether there is a yarn defect based on the monitored information. When detecting a yarn defect, the yarn monitoring device 8 transmits a yarn defect detection signal to the unit controller 10.
  • the tension sensor 9 measures a tension of traveling yarn Y between the air spinning device 7 and the yarn storing device 11 and transmits a tension measurement signal to the unit controller 10. When the unit controller 10 detects that there is a failure based on a detection result of the yarn monitoring device 8 and/or the tension sensor 9, yarn Y is cut in the spinning unit 2.
  • a yarn processing module 20 is a module in which the yarn monitoring device 8, the tension sensor 9, and the yarn storing device 11 described above are integrated.
  • the yarn processing module 20 is removably attached to a support frame 15 illustrated in FIG. 1 .
  • the support frame 15 is part of the frame of the spinning machine 1 and directly or indirectly supports at least one of the drafting device 6, the air spinning device 7, and the winding device 13.
  • the waxing device 12 described above is not illustrated in FIG. 2 and FIG. 3 , the waxing device 12 is also attachable to the yarn processing module 20.
  • the yarn processing module 20 includes a chassis 21, a front panel 22, and a guide member 23.
  • the front panel 22 is attached to the front side of the chassis 21.
  • the guide member 23 has a surface facing upward in the vertical direction and has a contact part (notch) in contact with yarn Y to restrict the travel position of the yarn.
  • the shape of the guide member 23 is not limited thereto.
  • the guide member 23 is attached to an upper end of the front panel 22 and guides yarn Y fed from the air spinning device 7 (see FIG. 1 ) to the yarn monitoring device 8.
  • the chassis 21 has a pair of side frames 21a, a middle frame 21b, a bottom frame 21c, and a front frame 21d.
  • the middle frame 21b bridges between the middle portions of a pair of side frames 21a.
  • the bottom frame 21c bridges between the lower ends of a pair of side frames 21a.
  • the front frame 21d bridges between a pair of side frames 21a on the upper side of the middle frame 21b.
  • the configuration of the chassis 21 is not limited and may be modified in various ways.
  • the front frame 21d and a pair of side frames 21a may be integrally formed (formed by folding a sheet of sheet metal) .
  • the middle frame 21b and the bottom frame 21c may be formed separately from the front frame 21d and a pair of side frames 21a (formed with separate sheet metals).
  • the middle frame 21b may bridge between the middle portions of a pair of side frames 21a
  • the bottom frame 21c may bridge between the lower portions of a pair of side frames 21a.
  • Each of a pair of side frames 21a has a guide groove 21e.
  • Each guide groove 21e is engaged with a pin (not illustrated in the figure) provided on the support frame 15 (see FIG. 1 ) side. With the pin engaged in the guide groove 21e, the bottom frame 21c is fastened to the support frame 15 by screws. That is, the chassis 21 (thus, the yarn processing module 20) is removably attached to the support frame 15.
  • the yarn monitoring device 8 is attached to the front frame 21d.
  • the yarn monitoring device 8 has a slit 85 protruding on the front side of the front panel 22 through an opening 22a provided in the front panel 22.
  • the tension sensor 9 is attached to the middle frame 21b.
  • a slit 9a defining a region through which yarn Y travels protrudes on the front side of the front panel 22 through a notch 22b provided in the front panel 22.
  • the yarn storing device 11 is attached to the middle frame 21b.
  • the electric motor 11a is disposed in an upper space S1 on the rear side of the front panel 22.
  • the upper space S1 is a space above the middle frame 21b in the space between a pair of side frames 21a.
  • the yarn storing roller 11b and the hooking member 11c are disposed in a lower space S2 and exposed on the front side of the front panel 22 through the notch 22b.
  • the lower space S2 is a space below the middle frame 21b in the space between a pair of side frames 21a.
  • the yarn processing module 20 further includes a circuit board 25 and part of a suction mechanism 26.
  • the circuit board 25 is disposed in the upper space S1 and attached to the front frame 21d.
  • the circuit board 25 is electrically connected to the tension sensor 9, the electric motor 11a, and the like.
  • the circuit board 25 has a connector 25a connected to external wiring including a power supply line and a signal line (not illustrated in the figure).
  • the external wiring is electrically connected to the unit controller 10 and is removable from the connector 25a.
  • the front panel 22 is provided with a display unit and an operation unit (not illustrated in the figure) electrically connected to the circuit board 25.
  • the display unit is a display for displaying a variety of information.
  • the operation unit is, for example, an operation button for operators.
  • the suction mechanism 26 includes a suction tube 28, a second suction pipe 29, a connection part 27, a first suction pipe 43 (see FIG. 6 ), a suction part 41a (see FIG. 1 ), a fiber waste collecting part 41b (see FIG. 1 ), and a third suction pipe 51.
  • the yarn processing module 20 includes the suction tube 28, the second suction pipe 29, and the connection part 27 of the suction mechanism 26.
  • the second suction pipe 29 is communicate with the first suction pipe 43 and channels a suction flow that is a flow of air. In other words, the second suction pipe 29 guides or directs the suction flow.
  • the second suction pipe 29 is attached to the side frame 21a with a bracket 21f interposed.
  • the suction tube 28 is attached to one end 29a of the second suction pipe 29.
  • the front end of the suction tube 28 is positioned in the vicinity of the base end portion (upstream-side end) of the yarn storing roller 11b to form a first suction inlet 28a.
  • the first suction inlet 28a is disposed to face the outer peripheral surface of the yarn storing roller 11b which is a part around which yarn Y is wound. That is, the second suction pipe 29 communicates with the first suction inlet 28a that sucks fiber waste from the yarn storing roller 11b.
  • the second suction pipe 29 has one end 29a facing the yarn storing device 11 with the suction tube 28 interposed, the other end (downstream-side end) 29b connected to the suction part 41a (see FIG. 1 ) for producing a suction flow that is a flow of air at one end 29a through the connection part 27 (see FIG. 3 ) and the first suction pipe 43 (see FIG. 3 ), and a body 30 extended from one end 29a to the other end 29b and having three (a plurality of) flection parts 31 and four (a plurality of) linear parts 33 between one end 29a and the other end 29b.
  • linear parts 33, 33 having different axis AL directions are formed.
  • An iron collar may be attached to the other end 29b of the second suction pipe 29. In this case, damage to the other end 29b by yarn Y can be prevented.
  • the inner diameter D of at least the flection part 31 is 8 mm or more.
  • the entire inner diameter D1 of the body 30 including the linear parts 33 may be 8 mm or more.
  • the inner diameter D of at least the flection part 31 may be 12 mm or more.
  • the entire inner diameter D1 of the body 30 including the linear parts 33 may be 12 mm or more.
  • the body 30, that is, the second suction pipe 29 is a molded product formed in a predetermined shape and is formed of, for example, a resin material such as polypropylene (PP).
  • the flexural strength of the second suction pipe 29 is, for example, 420 to 560 (kgf/cm 2 ).
  • the second suction pipe 29 is a molded product basically not flexible although slight deformation under stress is permitted.
  • the second suction pipe 29 in the present embodiment is a molded product having the body 30 approximately extended in a C shape.
  • the first suction pipe 43 is a pipe having a circular hollow cross section and channels a suction flow for sucking fiber waste.
  • the first suction pipe 43 guides or directs the suction flow.
  • One end 43a of the first suction pipe 43 is connected to the suction duct 42 (see FIG. 1 ) extended in the arrangement direction of the spinning units 2.
  • One end 42a of the suction duct 42 is connected to the fiber waste collecting part 41b (see FIG. 1 ) accommodated in the first end frame 4 (see FIG. 1 ).
  • the fiber waste collecting part 41b has the suction part 41a (suction source: see FIG.
  • the first suction pipe 43 is connected to the suction part 41a through the suction duct 42.
  • the third suction pipe 51 communicates with the first suction pipe 43 to channel a suction flow that is a flow of air.
  • the third suction pipe 51 guides or directs the suction flow.
  • the third suction pipe 51 includes one end 51a provided in the vicinity of the guide member 23 on the front surface of the front panel 22, the other end (downstream-side end) 51b connected to the suction part 41a (see FIG. 1 ) for producing a suction flow at one end 51a through the connection part 27 (see FIG. 3 ) and the first suction pipe 43 (see FIG. 3 ), and a communicative part 51c communicatively connected from one end 51a to the other end 51b.
  • One end 51a has a second suction inlet 22c described later.
  • the third suction pipe 51 is formed linearly (with no flection part) from one end 51a to the other end 51b.
  • the length of the third suction pipe 51 is 10 cm or less, shorter than the length of the first suction pipe 43 and the second suction pipe 29.
  • the connection part 27 is connected with the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 to merge the second suction pipe 29 and the third suction pipe 51 with the first suction pipe 43.
  • the first suction pipe 43, the second suction pipe 29, the third suction pipe 51, and the connection part 27 are formed with members different from each other (separate members). That is, the first suction pipe 43, the second suction pipe 29, the third suction pipe 51, and the connection part 27 are separate members from each other.
  • the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 are connected to the connection part 27 from directions different from each other.
  • the first suction pipe 43 and the second suction pipe 29 are removably connected to the connection part 27.
  • connection part 27 is disposed on the upstream side of the first suction pipe 43 and disposed on the downstream side of the second suction pipe 29 and the third suction pipe 51. That is, the connection part 27 merges one end 29a that is the downstream-side end of the second suction pipe 29 and one end 51a that is the downstream-side end of the third suction pipe 51 with the other end 43b that is the upstream-side end of the first suction pipe 43.
  • the "upstream side” and the “downstream side” of the suction pipes refer to the upstream side and the downstream side as viewed in the direction in which fiber waste is sucked.
  • the connection part 27 is disposed in the upper space S1 and attached to the front frame 21d.
  • the second suction pipe 29 is connected to the connection part 27 from the front
  • the third suction pipe 51 is connected to the connection part 27 from the side
  • the first suction pipe 43 is connected to the connection part 27 from the rear.
  • the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 in the connection part 27 have different pipe characteristics from each other defined by at least one of a hollow cross-sectional area and the hollow cross-sectional shape.
  • the hollow cross-sectional shapes of the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 are circular, and the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 have hollow cross-sectional areas different from each other.
  • circular encompasses both oval and circle shapes.
  • the inner diameter (diameter of the hollow part) of the third suction pipe 51 is preferably 4 mm or more to 11 mm or less.
  • the ratio between the largest cross-sectional area and the smallest cross-sectional area is 1:6 or more to 1:68 or less.
  • the ratio between the largest cross-sectional area and the smallest cross-sectional area is 1:30 or more to 1:32 or less.
  • the hollow cross-sectional area of the first suction pipe 43 at the connecting position to the connection part 27 is larger than the hollow cross-sectional area of the second suction pipe 29 at the connecting position to the connection part 27.
  • the hollow cross-sectional area of the second suction pipe 29 at the connecting position to the connection part 27 is larger than the hollow cross-sectional area of the third suction pipe 51 at the connecting position to the connection part 27.
  • the lower limit value of the hollow cross-sectional area of the third suction pipe 51 at the connecting position to the connection part 27 is set to a value that allows fiber waste (yarn waste or fluff) to be sucked.
  • the upper limit value of the hollow cross-sectional area of the third suction pipe 51 at the connecting position to the connection part 27 is set in relation to the connection part 27, preferably 1/2 or less of the hollow cross-sectional area of the connection part 27.
  • connection part 27 (the merging structure for suction pipes) will be described in more detail.
  • part of an inner surface 27b forming an interior space S11 of the connection part 27 has a planar part 27a that is a flat surface.
  • the second suction pipe 29 is connected to the planar part 27a.
  • the region surrounded by the outer shape of the second suction pipe 29 at the connecting position to the connection part 27 is planar. That is, it is indicated that at the connecting position to the connection part 27, a region of the second suction pipe 29 orthogonal to the axial line AL2 is planar.
  • the opening of the second suction pipe 29 removed from the connection part 27 is planar.
  • the cross section of the interior space S11 in the connection part 27 as viewed from the connecting direction of the first suction pipe 43 (as viewed from the direction of axial line AL1 at the connecting position to the connection part 27) is formed in a D shape.
  • the inner surface 27b (the outer shape of the cross section of the interior space S11) in the connection part 27 is formed in a D shape with a linear part 27c that is part of the planar part 27a and a semi-circular part (arc-shaped part) 27d.
  • the D shape includes an approximately D shape.
  • the inner surface 27b in the connection part 27 may be formed with a linear part 27c that is part of the planar part 27a and an arc-shaped part including an arc segment or an arc-shaped part including a plurality of arc segments with different radii.
  • the hollow cross-sectional shape of the first suction pipe 43 is circular.
  • the hollow cross section in the connection part 27 to which the first suction pipe 43 is connected is D-shaped and is not circular.
  • the adapter 44 is provided between the connection part 27 and the first suction pipe 43 for connecting them.
  • the hollow cross section at the upstream-side end 44a is formed in a D shape
  • the hollow cross section at the downstream-side end 44b is formed in a circular shape.
  • the adapter 44 is a member for gradually transforming the hollow cross-sectional shape.
  • a position P1 on the axial line AL2 of the second suction pipe 29 at the connecting position to the connection part 27 and a central position P2 in the longitudinal direction in the linear part 27c are shifted from each other by a distance G in the longitudinal direction of the linear part 27c.
  • the axial line AL2 of the second suction pipe 29 agrees with the axial line AL at the most downstream end of the second suction pipe 29.
  • the third suction pipe 51 communicates with the second suction inlet 22c provided above (upstream side) the guide member 23 for guiding yarn Y, the second suction inlet 22c provided between the winding device 13 and the yarn feeding device (the drafting device 6 and the air spinning device 7).
  • the direction of the axial line AL1 of the first suction pipe 43 at the connecting position to the connection part 27 and the direction of the axial line AL3 of the third suction pipe 51 at the connecting position to the connection part 27 have a component in the same direction (hereinafter referred to as "first direction") .
  • the connection part 27 has an opening 27f.
  • the angle ⁇ of intersection of the connecting direction of the third suction pipe 51 (the direction of the axial line AL3 at the connecting position to the connection part 27) and the direction of the axial line AL4 of the connection part 27 is 45 degrees or less.
  • the angle ⁇ of intersection of the connecting direction of the third suction pipe 51 and the direction of the axial line AL4 of the connection part 27 may be 25 degrees or less.
  • the direction of the axial line AL1 and the direction of the axial line AL3 have a component in the machine front-rear direction as a component in the first direction.
  • the third suction pipe 51 When viewed from the connecting direction of the second suction pipe 29, the third suction pipe 51 is disposed on one side 29d in the right-to-left direction of the second suction pipe 29, and the third suction pipe 51 is connected such that the extended straight line (the axial line AL3 at the connecting position) in the connecting direction of the third suction pipe 51 crosses an inner peripheral surface 43c of the first suction pipe 43 on the other side 29c in the right-to-left direction.
  • the third suction pipe 51 may be connected such that the extended straight line (axial line AL3) in the connecting direction of the third suction pipe 51 crosses the semi-circular part 27d that is part of the inner surface of the connection part 27 on the other side 29c in the right-to-left direction.
  • the direction of the axial line AL2 of the second suction pipe 29 at the connecting position to the connection part 27 forms an angle of 45 degrees or more relative to the component in the first direction.
  • the direction of the axial line AL2 of the second suction pipe 29 at the connecting position to the connection part 27 may be vertical to the component in the first direction.
  • the area A1 of the opening connected with the first suction pipe 43 (the hollow cross-sectional area of the first suction pipe 43 at the connecting position)
  • the area A2 of the opening connected with the second suction pipe 29 (the hollow cross-sectional area of the second suction pipe 29 at the connecting position)
  • the area A3 of the opening connected with the third suction pipe 51 (the hollow cross-sectional area of the third suction pipe 51 at the connecting position) have the relation: A3 ⁇ A2 ⁇ A1 and A3 + A2 ⁇ A1.
  • the area A1 of the opening connected with the first suction pipe 43, the area A2 of the opening connected with the second suction pipe 29, and the area A3 of the opening connected with the third suction pipe 51 are defined so as to gradually expand toward the downstream side in the direction in which a suction flow flows.
  • connection part 27 to which the second suction pipe 29 is connected has the planar part 27a at part of the inner surface 27b forming the interior space S11, and the second suction pipe 29 is connected to the planar part 27a.
  • a suction flow coming from the second suction pipe 29 and a suction flow coming from the third suction pipe 51 can merge in the interior space S11 of the connection part 27 without obstructing the suction flow by the protrusion of the second suction pipe 29, thereby enabling smooth collecting of fiber waste.
  • the configuration in the foregoing embodiment can prevent or reduce merging turbulence of suction flows from vertical two directions (including approximately vertical two directions).
  • a merging structure for connecting one suction pipe with another suction pipe.
  • the diameter of the other suction pipe has to be significantly reduced compared with one suction pipe, for the sake of space limitations. This is because unless the diameter of the other suction pipe is reduced, an end of the other suction pipe has to be located deeper into one suction pipe and, in this case, the other suction pipe inserted deep reduces the hollow area of one suction pipe. As a result, fiber waste is unable to be smoothly collected.
  • the amount of protrusion L1 of the second suction pipe 29 in the interior space S11 of the connection part 27 can be reduced without significantly reducing the diameter of the second suction pipe 29 corresponding to the other suction pipe mentioned above, compared with the first suction pipe 43 corresponding to one suction pipe mentioned above.
  • the inner surface 27b of the connection part 27 is formed in a D shape with the linear part 27c and the semi-circular part 27d.
  • the amount of protrusion L1 of the second suction pipe 29 (or an iron collar) in the interior space S11 of the connection part 27 can be even smaller than the amount of protrusion L11 of the second suction pipe 129 (or an iron collar) (L1 ⁇ L11), and the area of the interior space S11 of the connection part 27 can be larger than the area of the interior space S12 of the connection part 127, accordingly.
  • the position P1 on the axial line AL2 of the second suction pipe 29 at the connecting position and the central position P2 in the longitudinal direction of the linear part 27c are shifted from each other in the longitudinal direction.
  • This configuration prevents a flow from the second suction pipe 29 from colliding with the semi-circular part 27d at the central point and dividing into two and prevents turbulence of the flow in the interior space S11 of the connection part 27 due to the flow coming from the second suction pipe 29 and dividing into two.
  • the axial line position P1 at the connecting position of the second suction pipe 29 is shifted from the central position P2 and thus from the central point of the semi-circular part 27d, causing a suction flow in the form of a large vortex in the interior space S11 of the connection part 27.
  • the suction flow coming from the second suction pipe 29 and the suction flow coming from the third suction pipe 51 smoothly merge in the interior space S11 of the connection part 27, thereby enabling smooth collecting of fiber waste.
  • the connecting direction of the first suction pipe 43 (the outflow direction of the suction flow to the first suction pipe 43) and the connecting direction of the third suction pipe 51 (the inflow direction of the suction flow from the third suction pipe 51) come closer to each other to facilitate a flow of fiber waste from the third suction pipe 51 to the first suction pipe 43.
  • the flow from the third suction pipe 51 flows toward the first suction pipe 43 without colliding with the inner surface 27b of the connection part 27 (or the inner peripheral surface 43c of the first suction pipe 43) . Even if the flow collides, the angle of collision with the inner surface 27b (inner peripheral surface 43c) is small, and the impurity included in the air is less likely to adhere to the inner surface 27b (inner peripheral surface 43c), compared with when the angle of collision is large (for example, the flow collides at right angle) .
  • the third suction pipe 51 when viewed from the connecting direction of the second suction pipe 29, the third suction pipe 51 is disposed on one side 29d in the right-to-left direction of the second suction pipe 29, and the third suction pipe 51 is connected such that the extended straight line in the connecting direction (axial line AL3) of the third suction pipe 51 crosses the inner surface 27b of the connection part 27 (the inner peripheral surface 43c of the first suction pipe 43) on the other side 29c in the right-to-left direction.
  • the connecting direction of the first suction pipe 43 and the connecting direction of the third suction pipe 51 come closer to each other to facilitate the flow of fiber waste from the third suction pipe 51 to the first suction pipe 43.
  • the angle difference between the connecting direction of the first suction pipe 43 and the connecting direction of the third suction pipe 51 is small, the flow from the third suction pipe 51 flows toward the first suction pipe 43 without colliding with the inner surface 27b of the connection part 27 (the inner peripheral surface 43c of the first suction pipe 43). As a result, deposition of impurity in the air at a place of collision can be prevented or reduced. In this configuration, the angle difference between the connecting direction of the first suction pipe 43 and the connecting direction of the third suction pipe 51 can be reduced even when there are limitations in space or design dimensions.
  • Deposition of impurity in the air at a place of collision can be prevented or reduced even more effectively, as illustrated in FIG. 6 , when the connection position of the third suction pipe 51 is above the connection part 27 (above the central position in the height direction) and the angle difference between the connecting direction of the first suction pipe 43 and the connecting direction of the third suction pipe 51 is reduced (small) .
  • connection angle of the third suction pipe 51 (the inflow angle of the suction flow from the third suction pipe 51) is small relative to the inner surface (in the present embodiment, the bottom wall surface forming the interior space S11) on the other direction (in the present embodiment, below) side of the connection part 27.
  • the pipe diameters of the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 are inevitably small, and the flexibility of manufacturing is reduced. For this manufacturing reason, it is difficult to produce the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 from sheet metal.
  • the hollow cross section is therefore usually designed to be circular because of the limitation in pipe shape. The connection of such suction pipes with a small inner diameter difference between the suction pipes tends to suffer turbulence of the air flow in the merging space.
  • the amount of protrusion into the interior space S11 that is the merging space of the second suction pipes 29 can be reduced, thereby reducing merging turbulence in the interior space S11.
  • the first suction pipe 43 of each of a plurality of spinning units 2 is connected to the suction duct 42.
  • fiber waste can be smoothly collected in the merging structure provided in each spinning unit 2 and disposed on the upstream side of the suction duct 42 in the suction direction.
  • a molded product formed of a resin material is employed as the second suction pipe 29.
  • a tube formed of a flexible soft resin material such as vinyl chloride may be used.
  • a guide member may be additionally used to form the shape as illustrated in FIG. 4 .
  • the first suction pipe 43 and the second suction pipe 29 are connected through the connection part 27 that is a member different from the first suction pipe 43 and the second suction pipe 29.
  • the embodiment is not limited thereto.
  • the first suction pipe 43 and the connection part 27 may be formed integrally.
  • the connecting direction of the first suction pipe 43 to the connection part 27 is the direction of the axial line AL1 of the first suction pipe 43 at the boundary portion between the connection part 27 and the second suction pipe 29.
  • the hollow cross-sectional shape of the connection part 27 is transformed into the hollow cross-sectional shape of the first suction pipe 43 (that is, transformation from a D shape into a circular shape) using the adapter 44.
  • the embodiment is not limited thereto.
  • the first suction pipe 43 having its cross-sectional shape changing from a D shape into a circular shape at some point in the longitudinal direction may be used, rather than using the adapter 44.
  • the hollow cross section of the connecting position is formed in a D shape.
  • the hollow cross section at the connecting position of the first suction pipe 43 in the connection part 27 is formed in a D shape.
  • the hollow cross section at the connecting position may be formed in a circular shape. That is, the second suction pipe 29 having a circular hollow cross section may be connected to the connection part 27 having a circular hollow cross section at the connecting position to the first suction pipe 43. Also in this case, the connected portion to the second suction pipe 29 in the connection part 27 is formed in the planar part.
  • the first suction pipe 43 and the third suction pipe 51 also may have a circular hollow cross section.
  • the ratio between the largest cross-sectional area and the smallest cross-sectional area may be 1:6 or more to 1:68 or less (preferably, 1:30 or more to 1:32 or less) .
  • the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 may be cylindrical pipes, and, of the inner diameters of the first suction pipe 43, the second suction pipe 29, and the third suction pipe 51 at the respective connecting positions to the connection part 27, the ratio between the largest inner diameter and the smallest inner diameter may be 1:2 or more to 1:8 or less (preferably, 1:4 or more to 1:6 or less).
  • the embodiment may be applicable to, for example, textile machinery other than a yarn winding machine such as an automatic winder or a spinning machine and a yarn winding unit included in such textile machinery, or textile machinery such as a drawing frame or a roving frame that is processing machinery for fiber bundle prior to yarn and a fiber processing unit included in such textile machinery.
  • textile machinery other than a yarn winding machine such as an automatic winder or a spinning machine and a yarn winding unit included in such textile machinery, or textile machinery such as a drawing frame or a roving frame that is processing machinery for fiber bundle prior to yarn and a fiber processing unit included in such textile machinery.
  • the devices are disposed such that yarn Y fed from the upper side in the machine height direction is wound at the lower side.
  • the devices may be disposed such that yarn Y fed from the lower side is wound at the upper side.
  • FIG. 1 illustrates the spinning machine 1 configured to wind a cheese-shaped package P.
  • a cone-shaped package P also may be wound.
  • the yarn storing device 11 has the function of drawing yarn Y from the air spinning device 7.
  • yarn Y may be drawn from the air spinning device 7 with a delivery roller and a nip roller.
  • a slack tube or a mechanical compensator for removing slack of yarn Y with a suction air flow may be provided instead of the yarn storing device 11.
  • the tension sensor 9 may be disposed on the upstream side of the yarn monitoring device 8 in the traveling direction of yarn Y.
  • the unit controller 10 may be provided for each spinning unit 2. In the spinning unit 2, the waxing device 12, the tension sensor 9, and the yarn monitoring device 8 may be eliminated.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP19152088.1A 2018-01-19 2019-01-16 Zusammenführungsstruktur für saugrohre sowie garnwickeleinheit, spinnmaschine und textilmaschine damit Withdrawn EP3514275A1 (de)

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JP2018007365A JP2019123975A (ja) 2018-01-19 2018-01-19 吸引配管の合流構造、これを備えた糸巻取機及び紡績機

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EP3514275A1 true EP3514275A1 (de) 2019-07-24

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Citations (7)

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EP0546644A1 (de) * 1991-12-13 1993-06-16 SAVIO S.p.A. Absaugvorrichtung für Textilmaschinen, insbesondere für eine Ringspinnmaschine
US5453117A (en) * 1994-03-22 1995-09-26 Luwa Ag Fluid filter and method of separating entrained particulate matter from a moving fluid stream
EP2573018A2 (de) * 2011-09-20 2013-03-27 Murata Machinery, Ltd. Spinneinheit und Spinnmaschine
JP2013067873A (ja) 2011-09-20 2013-04-18 Murata Mach Ltd 紡績ユニット及び紡績機
JP2014009052A (ja) * 2012-06-28 2014-01-20 Murata Mach Ltd 繊維機械
EP2799380A1 (de) * 2013-04-30 2014-11-05 Savio Macchine Tessili S.p.A. Wickler
EP3020854A1 (de) * 2014-11-13 2016-05-18 Murata Machinery, Ltd. Verzugsvorrichtung und spinneinheit

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JP2010070883A (ja) * 2008-09-19 2010-04-02 Murata Machinery Ltd 繊維機械用のダクト及びこれを備えた繊維機械
JP2011038189A (ja) * 2009-08-06 2011-02-24 Murata Machinery Ltd 紡績機及び糸貯留ローラに残留した紡績糸の除去方法
JP5777936B2 (ja) * 2010-07-16 2015-09-09 テルモ株式会社 吸引カテーテル
JP2013079478A (ja) * 2011-09-21 2013-05-02 Murata Mach Ltd ドラフト装置、紡績ユニット及び紡績機
EP2762242B1 (de) * 2013-01-31 2015-03-04 Raccorderie Metalliche S.p.A. Presspassung
CN203671090U (zh) * 2013-12-13 2014-06-25 芜湖佳景科技有限公司 一种汽车转向油管的铰接接头与铰接螺栓的装配结构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546644A1 (de) * 1991-12-13 1993-06-16 SAVIO S.p.A. Absaugvorrichtung für Textilmaschinen, insbesondere für eine Ringspinnmaschine
US5453117A (en) * 1994-03-22 1995-09-26 Luwa Ag Fluid filter and method of separating entrained particulate matter from a moving fluid stream
EP2573018A2 (de) * 2011-09-20 2013-03-27 Murata Machinery, Ltd. Spinneinheit und Spinnmaschine
JP2013067873A (ja) 2011-09-20 2013-04-18 Murata Mach Ltd 紡績ユニット及び紡績機
JP2014009052A (ja) * 2012-06-28 2014-01-20 Murata Mach Ltd 繊維機械
EP2799380A1 (de) * 2013-04-30 2014-11-05 Savio Macchine Tessili S.p.A. Wickler
EP3020854A1 (de) * 2014-11-13 2016-05-18 Murata Machinery, Ltd. Verzugsvorrichtung und spinneinheit

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