Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H57/00—Guides for filamentary materials; Supports therefor
  • B65H57/003—Arrangements for threading or unthreading the guide
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
  • B65H67/08—Automatic end-finding and material-interconnecting arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H54/00—Winding, coiling, or depositing filamentary material
  • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
  • B65H54/10—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers
  • B65H54/20—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers forming multiple packages
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H54/00—Winding, coiling, or depositing filamentary material
  • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
  • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H57/00—Guides for filamentary materials; Supports therefor
  • B65H57/16—Guides for filamentary materials; Supports therefor formed to maintain a plurality of filaments in spaced relation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H65/00—Securing material to cores or formers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
  • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
  • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
  • B65H67/044—Continuous winding apparatus for winding on two or more winding heads in succession
  • B65H67/048—Continuous winding apparatus for winding on two or more winding heads in succession having winding heads arranged on rotary capstan head
• • 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
  • B65H2701/313—Synthetic polymer threads
  • B65H2701/3132—Synthetic polymer threads extruded from spinnerets

Definitions

• the present invention relates to a yarn winder configured to wind yarns.
• Patent Literature 1 Japanese Laid-Open Patent Publication No. 2021-143435 discloses a yarn winder (take-up unit of Patent Literature 1) which is configured to form packages by winding yarns spun out from a spinning apparatus onto bobbins while traversing the yarns.
• the yarn winder includes a bobbin holder to which bobbins are attached to be aligned along a predetermined arrangement direction and distribution guides (fulcrum guides of Patent Literature 1) which are provided to correspond to the respective bobbins and function as fulcrums of traversal of yarns.
• the yarn winder of Patent Literature 1 is provided with a first separator and second separator as members for threading yarns to the bobbins.
• the yarns having been threaded to the distribution guides are temporarily caught by the first separator, and the yarns are then handed over from the first separator to the second separator. Thereafter, as the second separator moves to the vicinity of the bobbins, yarn threading to the bobbins is performed.
• the first separator When the first separator catches the yarns, a state in which an operator sucks and holds the yarns by a suction gun is typically maintained.
• the first separator has plural holding units aligned in the arrangement direction, and the holding units catch the yarns that are being sucked and retained by the suction gun.
• the yarns having been threaded to the respective distribution guides are converged toward the suction gun, and the pitch of the yarns narrows toward the suction gun (see FIG. 10(b) of Patent Literature 1). Because the first separator catches the yarns sucked and held by the suction gun at a location remote from the distribution guides, the pitch of the yarns is narrow when the yarns are caught. On this account, when the holding units of the first separator try to catch the yarns, the holding units may not be able to successfully catch the yarns or one holding unit may erroneously catch plural yarns. It is therefore impossible to smoothly hand the yarns over from the first separator to the second separator. As a result, the efficiency of the yarn threading to the bobbins is deteriorated.
• An object of the present invention is to accurately and easily thread yarns having been threaded to distribution guides to bobbins.
• a yarn winder of the present invention includes: a bobbin holder to which bobbins are attached to be aligned along a predetermined arrangement direction; distribution guides which are provided above the bobbin holder to be aligned in the arrangement direction and to correspond to the respective bobbins; a contact roller which is provided above the bobbin holder and below the distribution guides in a vertical direction to make contact with and apply a contact pressure to the outer circumferential surface of each of packages formed by winding the yarns onto the bobbins; a yarn catching unit which has yarn catching portions aligned in the arrangement direction and is configured to catch the yarns threaded to the distribution guides, by using the yarn catching portions; and a yarn threading unit which has yarn holding portions aligned in the arrangement direction and is configured to receive, by the yarn holding portions, the yarns caught by the yarn catching unit and to thread the received yarns to the respective bobbins, the yarn catching portions being arranged: to catch the yarns at positions which are between the distribution guides and the contact roller
• the yarn catching portions are close to the distribution guides in the vertical direction, and are able to catch the yarns whose pitch in the arrangement direction is long. It is therefore possible to cause the yarn catching unit to accurately and easily catch the yarns. Furthermore, according to the present invention, as the yarn catching portions are moved to the handover positions, the yarns are smoothly handed over to the yarn holding portions. It is therefore possible to accurately and easily thread the yarns having been threaded to the distribution guides to the bobbins.
• the yarn winder of the present invention is preferably arranged such that the interval in the arrangement direction between the yarn catching portions is identical with the interval in the arrangement direction between the yarn holding portions, and the yarn catching unit hands the yarns over to the yarn holding portions while keeping the interval in the arrangement direction of the yarn catching portions having caught the yarns to be constant. It is noted that, when the interval in the arrangement direction between the yarn catching portions is identical with the interval in the arrangement direction between the yarn holding portions, the intervals may be completely identical or substantially identical.
• the yarn winder of the present invention is preferably arranged such that the yarn catching portions are arranged to be movable to retracted positions where the yarn catching portions do not make contact with the yarns that are threaded to the distribution guides and wound onto the bobbins.
• the present invention makes it possible to prevent the yarns from making contact with the yarn catching portions by moving the yarn catching portions to the retracted positions, when the yarns are wound onto the bobbins by the yarn winder.
• the yarn winder of the present invention is preferably arranged so that the yarn catching portions are arranged to catch the yarns threaded to the respective distribution guides, while moving from the retracted positions to the handover positions.
• the yarn catching portions are moved from the retracted positions to the handover positions, the yarns having been threaded to the distribution guides are smoothly caught.
• the yarn winder of the present invention is preferably arranged so that the yarn catching unit includes at least one first swing member which supports the yarn catching portions and is swingable about an axis extending along the arrangement direction, and the yarn catching portions move between the retracted positions and the handover positions as the at least one first swing member is swung.
• the present invention makes it possible to move the yarn catching portions with a relatively simple structure.
• the yarn winder of the present invention further includes a first movement drive unit which is configured to move the yarn catching portions between the retracted positions and the handover positions.
• the present invention allows the first movement drive unit to move the yarn catching portions and allows the yarn catching portions to catch the yarns without needing the intervention of the operator. This makes it possible to further easily perform the yarn threading.
• the yarn winder of the present invention is preferably arranged so that the yarn threading unit has a yarn threading member in which the yarn holding portions are formed, and as the yarn threading member is driven, the yarn holding portions having received the yarns from the yarn catching portions are moved to yarn threading positions where the yarns are threaded to the bobbins.
• the yarns having been threaded to the distribution guides can be threaded to the bobbins by two members, i.e., the yarn catching unit and the yarn threading member. In this way, it is possible to suppress the number of components from increasing.
• the yarn winder of the present invention is preferably arranged so that the first swing member is arranged to be swingable without making contact with the yarn catching unit and the contact roller.
• the present invention it is unnecessary to provide an arrangement for retracting the contact roller to avoid the contact between the yarn catching unit member and the contact roller when the yarn catching portions are moved. On this account, with the relatively simple arrangement, it is possible to prevent the components from being damaged due to the contact between the yarn catching unit and the contact roller.
• the yarn winder of the present invention is preferably arranged so that a slit is formed in each of the yarn holding portions to be open on one side in the arrangement direction, the yarn catching unit is arranged to be movable in the arrangement direction, and when the yarn catching portions are at the handover positions, the yarn catching unit moves from the one side to the other side in the arrangement direction so that the yarns caught by the yarn catching portions are inserted into the slits formed in the respective yarn holding portions, and as the yarn catching portions move from the handover positions to the retracted positions while the yarns are inserted into the respective slits, the yarns are detached from the yarn catching portions.
• the operation control can be easily done.
• the yarn winder of the present invention is preferably arranged so that the yarn threading member includes at least one second swing member which supports the yarn holding portions and is swingable about an axis extending along the arrangement direction, and the yarn holding portions move between the receiving positions and the yarn threading positions as the at least one second swing member is swung.
• the present invention makes it possible to move the yarn holding portions with a relatively simple structure.
• the yarn winder of the present invention is preferably arranged so that the yarn threading unit has a second movement drive unit which is configured to move the yarn holding portions between the receiving positions and the yarn threading positions.
• each yarn holding portion can be moved by the second movement drive unit, and the yarns received by the yarn holding portions can be threaded to the bobbins without needing the intervention by the operator. This makes it possible to further easily perform the yarn threading.
• the up-down direction is a vertical direction in which the gravity acts.
• the left-right direction is a direction orthogonal to the up-down direction.
• the front-rear direction (arrangement direction of the present invention) is a direction which is orthogonal to both the up-down direction and the left-right direction, and is a direction in which bobbins B (described later) are aligned.
• a direction in which each yarn Y (described later) runs will be referred to as a yarn running direction.
• FIG. 1 is a side view of the spun yarn take-up machine 1.
• the side close to the viewer of the figure is the right side.
• the spun yarn take-up machine 1 is configured to simultaneously form packages P by taking up plural (e.g., 16 in the present embodiment) yarns Y spun out from a spinning apparatus 2 and winding the yarns Y onto bobbins B.
• the spinning apparatus 2 is, for example, configured to discharge molten polymer which is a material of the yarns Y, for example. While the material of the yarns Y is, for example, a polyester-based material such as PET, the disclosure is not limited to this arrangement. While the yarn Y is, for example, a monofilament yarn made of a single filament, the disclosure is not limited to this arrangement.
• the spun yarn take-up machine 1 includes a first godet roller 3, a second godet roller 4, and a yarn winder 5.
• the first godet roller 3 is a roller by which yarns Y spun out from a spinning apparatus 2 are sent to the downstream side in a yarn running direction.
• the second godet roller 4 is a roller by which the yarns Y having been sent to the downstream side in the yarn running direction by the first godet roller 3 are sent to the yarn winder 5.
• the yarn winder 5 is a device configured to form packages P by winding the yarns Y sent by the second godet roller 4 onto bobbins B.
• the first godet roller 3 is a roller having an axis substantially in parallel to the left-right direction.
• the first godet roller 3 is positioned below the spinning apparatus 2, for example.
• yarns Y are wound while being aligned in the left-right direction.
• the first godet roller 3 is rotationally driven by an unillustrated motor. As a result, the first godet roller 3 feeds the yarns Y to the downstream side in a yarn running direction.
• the second godet roller 4 is a roller having an axis substantially in parallel to the left-right direction.
• the second godet roller 4 is provided downstream of the first godet roller 3 in the yarn running direction.
• the second godet roller 4 is provided above and rearward of the first godet roller 3.
• the second godet roller 4 is rotationally driven by an unillustrated motor. As a result, the second godet roller 4 feeds the yarns Y to the downstream side in the yarn running direction.
• the yarn winder 5 is arranged to be able to perform a winding operation of forming packages P by winding yarns Y onto respective bobbins B.
• the yarn winder 5 is provided downstream of the second godet roller 4 in the yarn running direction.
• the yarn winder 5 is provided below the second godet roller 4.
• FIG. 2 is a front view of the yarn winder 5.
• FIG. 3 is a block diagram of an electric configuration of the yarn winder 5.
• FIG. 4(a) is a perspective view of a yarn catching unit 40 (described later).
• FIG. 4(b) is a side view of a yarn threading member 50 (described later).
• the yarn winder 5 includes a supporting frame 11, a turret 12, two bobbin holders 13, a base 14, fulcrum guides 15 (distribution guides of the present invention), traverse guides 16, a contact roller 17, a guide supporter 18, and a controller 26 (see FIG. 3 ).
• the supporting frame 11 is a member extending in the front-rear direction.
• the supporting frame 11 is cantilevered by the base 14 that stands vertically, so as to protrude forward (see FIG. 1 ).
• the base 14 is a member either to which constituent features of the yarn winder 5 are attached or in which constituent features of the yarn winder 5 are accommodated.
• the base 14 is provided at, for example, a rear end portion of the yarn winder 5.
• the turret 12 is a disc-shaped member having a rotational axis substantially in parallel to the front-rear direction.
• the turret 12 is rotatably supported by the base 14.
• the turret 12 is rotationally driven by a turret motor 91 (see FIG. 3 ).
• Each of the two bobbin holders 13 is rotatably supported by the turret 12 and protrudes forward from the front surface of the turret 12.
• the rotational axes of the two bobbin holders 13 are substantially in parallel to the front-rear direction.
• two bobbin holders 13 are provided to be point symmetric about the center of the turret 12 (see FIG. 2 ).
• the bobbins B provided for the respective yarns Y are attached to be lined up in the front-rear direction.
• each bobbin holder 13 supports, for example, 16 bobbins B.
• the number of bobbins B that the bobbin holder 13 can support is not limited to this number.
• the bobbins B are rotatably supported by each of the two bobbin holder 13.
• Each of the two bobbin holders 13 is rotationally driven by an individual winding motor 92 (see FIG. 3 ).
• Each bobbin holder 13 is rotationally driven counterclockwise when viewed from the front, for example (see a full-line arrow in FIG. 2 ).
• Each of the two bobbin holders 13 is movable between an upper position (position of the upper bobbin holder 13 shown in FIG. 1 and FIG. 2 ) where a yarn is wound onto each bobbin B and a lower position (position of the lower bobbin holder 13 shown in FIG. 1 and FIG. 2 ) which is below the upper position.
• the two bobbin holders 13 are moved between the upper and lower positions.
• the yarns Y are simultaneously wound onto the bobbins B attached to the bobbin holder 13 at the upper position.
• Each fulcrum guide 15 functions as a fulcrum when a yarn Y is traversed by each traverse guide 16.
• Each fulcrum guide 15 is arranged to guide a yarn Y to the downstream side in the yarn running direction.
• the fulcrum guides 15 are provided for the respective yarns Y.
• the fulcrum guides 15 are aligned in the front-rear direction at a position above the bobbin holder 13 at the upper position.
• the interval in the front-rear direction between the fulcrum guides 15 is substantially identical with the interval in the front-rear direction between the bobbins B attached to the bobbin holder 13.
• the interval in the front-rear direction between the fulcrum guides 15 indicates the interval between the centers of the respective fulcrum guides 15 in the front-rear direction.
• the interval in the front-rear direction between the bobbins B indicates the interval between the centers of the respective bobbins B in the front-rear direction.
• the traverse guides 16 are provided for the respective yarns Y.
• the traverse guides 16 are aligned in the front-rear direction.
• Each traverse guide 16 is driven by, for example, a traverse motor 93 (see FIG. 3 ), and is configured to reciprocally move at least in the front-rear direction. With this arrangement, the yarns Y threaded to the traverse guides 16 are traversed about the fulcrum guides 15.
• the contact roller 17 is provided immediately above the bobbin holder 13 at the upper position. Furthermore, as shown in FIG. 1 and FIG. 2 , the contact roller 17 is provided below the fulcrum guides 15. The axis of the contact roller 17 is substantially in parallel to the front-rear direction. The contact roller 17 is configured to make contact with the surfaces (outer circumferential surfaces) of the packages P supported by the bobbin holder 13 at the upper position. With this, the contact roller 17 applies a contact pressure to the surface of each package P to adjust the shape of each package P.
• the contact roller 17 is configured to be movable between a contact position where the contact roller 17 is able to make contact with the bobbins B attached to the bobbin holder 13 at the upper position and a non-contact position which is above the contact position and where the contact roller 17 does not make contact with the bobbins B attached to the bobbin holder 13 at the upper position.
• a contact position where the contact roller 17 is able to make contact with the bobbins B attached to the bobbin holder 13 at the upper position
• a non-contact position which is above the contact position and where the contact roller 17 does not make contact with the bobbins B attached to the bobbin holder 13 at the upper position.
• the guide supporter 18 is a member which supports the fulcrum guides 15. As shown in FIG. 2 , the guide supporter 18 is attached to the supporting frame 11 through an interposed member 19.
• the controller 26 includes, e.g., a CPU, a ROM, and a RAM which are not illustrated. As shown in FIG. 3 , the controller 26 is electrically connected to each component of the yarn winder 5 (see, e.g., the turret motor 91, the winding motor 92, and the traverse motor 93 described above). The controller 26 is configured to be able to control the operation of each component of the yarn winder 5.
• the yarn winder 5 further includes a yarn catching unit 40 and a yarn threading unit 45 as members for threading yarns to the bobbins B (see FIG. 2 ).
• the yarn catching unit 40 is a member configured to catch the yarns Y having been threaded to the respective fulcrum guides 15.
• the yarn threading unit 45 is configured to receive the yarns Y caught by the yarn catching unit 40 and to thread the yarns Y to the respective bobbins B.
• the yarn catching unit 40 includes yarn catching portions 41, first swing members 42, and a first swing shaft 43.
• the yarn catching portions 41 are aligned in the front-rear direction.
• the interval in the front-rear direction between the yarn catching portions 41 is substantially identical with the interval in the front-rear direction between the bobbins B.
• the interval in the front-rear direction between the yarn catching portions 41 indicates the interval between the centers of the respective yarn catching portions 41 in the front-rear direction.
• Each yarn catching portion 41 is, for example, a cylindrical member.
• the yarn Y is caught in such a way that the yarn Y is placed onto the circumferential surface of the cylinder.
• the yarn catching portion 41 may not be shaped in this way.
• Each of the first swing members 42 is arranged to support the corresponding yarn catching portion 41.
• the yarn catching portion 41 is connected to a leading end portion of the first swing member 42.
• the first swing member 42 is, for example, a rod-shaped member extending in a direction substantially orthogonal to the front-rear direction (see FIG. 4(a) ).
• the first swing member 42 is bended when, for example, viewed in the front-rear direction (see FIG. 2 ).
• the first swing member 42 may not be shaped in this way.
• the first swing shaft 43 extends in the front-rear direction.
• the first swing shaft 43 swingably supports plural first swing members 42.
• the first swing shaft 43 is connected to a base end portion of each of the first swing members 42.
• the first swing members 42 are swingable together about the first swing shaft 43 by a first movement drive unit 94 (see FIG. 3 ). As the first swing members 42 are swung together, the yarn catching portions 41 are movable between retracted positions (shown in FIG. 2 , FIG. 5 , FIG. 9 , and FIG. 10 ), catching positions (shown in FIG. 6 ), and handover positions (shown in FIG. 7 and FIG. 8 ).
• the retracted positions are positions where the yarn catching portions 41 are not in contact with the yarns Y that are threaded to the respective fulcrum guides 15 and wound onto the bobbins B.
• the catching positions are provided between the retracting positions and the handover positions.
• the catching positions are provided between the fulcrum guides 15 and the contact roller 17 in the up-down direction and are closer to the fulcrum guides 15 than the contact roller 17.
• the handover position are positions where the yarn catching portions 41 hand the yarns Y over to yarn holding portions 51 (described later) of a yarn threading member 50.
• the yarn catching portions 41 at the retracting positions overlap one another when viewed in the front-rear direction.
• the yarn catching portions 41 at the catching positions overlap one another when viewed in the front-rear direction
• the yarn catching portions 41 at the handover positions overlap one another when viewed in the front-rear direction.
• the first movement drive unit 94 may include, for example, an unillustrated motor as a driving source.
• the first movement drive unit 94 may include, for example, an unillustrated air cylinder as a driving source.
• the first movement drive unit 94 is electrically connected to the controller 26 (see FIG. 3 ).
• the yarn catching portions 41 are arranged to catch the yarns Y having been threaded to the respective fulcrum guides 15, while moving from the retracted positions to the handover positions (see FIG. 6 ). To put it differently, the yarn catching portions 41 are arranged to catch the yarns Y having been threaded to the respective fulcrum guides 15, at the catching positions between the retracted positions and the handover positions. In other words, the yarn catching portions 41 are arranged to catch the yarns Y at positions that are between the fulcrum guides 15 and the contact roller 17 in the up-down direction and are closer to the fulcrum guides 15 than the contact roller 17.
• the yarn catching unit 40 having caught the yarns Y hands the yarns Y over to the yarn holding portions 51 of the yarn threading member 50 while keeping the intervals in the front-rear direction of the yarn catching portions 41 to be constant.
• the first swing members 42 are swingable without making contact with the yarn catching unit 40 and the contact roller 17. To put it differently, when the yarn catching unit 40 is swung between the retracted position and the handover position, the yarn catching portions 41, the first swing members 42, and the contact roller 17 do not make contact with each other.
• the yarn catching unit 40 is arranged to be movable in the front-rear direction by a slide drive unit 95 (see FIG. 3 ).
• the yarn catching unit 40 may be, for example, arranged to be movable in the front-rear direction when positioned at the handover position, and may be restricted from moving in the front-rear direction when positioned at a position different from the handover position.
• the slide drive unit 95 is, for example, arranged to be movable in the front-rear direction by utilizing an unillustrated linear actuator as a driving source.
• the slide drive unit 95 is electrically connected to the controller 26 (see FIG. 3 ).
• the yarn threading unit 45 is configured to receive the yarns Y caught by the yarn catching unit 40 and to guide the yarns Y to positions where they are threaded to the bobbins B.
• the yarn threading unit 45 includes a yarn threading member 50 and a second movement drive unit 96 (see FIG. 3 ).
• the yarn threading member 50 includes yarn holding portions 51 (see also FIG. 4(b) ), a second swing member 52, and a second swing shaft 53. As shown in FIG. 4(b) , the yarn holding portions 51 are aligned in the front-rear direction.
• the interval in the front-rear direction between the yarn holding portions 51 is substantially identical with the interval in the front-rear direction between the bobbins B.
• the interval in the front-rear direction between the yarn holding portions 51 indicates the interval between the centers of the respective yarn holding portions 51 in the front-rear direction.
• the interval in the front-rear direction between the yarn holding portions 51 is substantially identical with the interval in the front-rear direction between the yarn catching portions 41.
• the yarn holding portion 51 is a substantially plate-shaped member.
• a slit 54 is formed to be open on the rear side in the front-rear direction (one side in the arrangement direction) .
• Each yarn holding portion 51 is arranged to be able to catch the yarn Y in such a way that the yarn Y is inserted into the slit 54.
• the yarn holding portion 51 may not be arranged in this way.
• the second swing member 52 is arranged to support the yarn holding portions 51 together. Each yarn holding portion 51 is connected to a leading end portion of the second swing member 52.
• the second swing member 52 is, for example, a substantially plate-shaped member extending in the front-rear direction.
• the second swing member 52 is more or less L-shaped when, for example, viewed in the front-rear direction (see FIG. 2 ).
• the second swing member 52 may not be shaped in this way.
• the second swing shaft 53 extends in the front-rear direction.
• the second swing shaft 53 swingably supports the second swing member 52.
• the second swing shaft 53 is connected to a base end portion of the second swing member 52.
• the second swing member 52 is swingable about the second swing shaft 53 by the second movement drive unit 96 (see FIG. 3 ). As the second swing member 52 is swung, the yarn holding portions 51 are movable between standby positions (shown in FIG. 2 and FIG. 9 ), receiving positions (shown in FIG. 6 and FIG. 7 ), and yarn threading positions (shown in FIG. 10 ).
• the standby positions are where the yarn holding portions 51 do not overlap the turret 12 when viewed in the front-rear direction, and are to the left of the turret 12 when, for example, viewed in the front-rear direction (see FIG. 2 ).
• the yarns Y are wound onto the bobbins B when the yarn holding portions 51 are at the standby positions.
• the receiving positions are positions of the yarn holding portions 51 when receiving the yarns Y from the yarn catching portions 41 of the yarn catching unit 40.
• the yarn threading positions are where the yarns Y received from the yarn catching portions 41 are threaded to the respective bobbins B.
• the yarn holding portions 51 at the receiving positions overlap one another when viewed in the front-rear direction.
• the yarn holding portions 51 at the yarn threading positions overlap one another when viewed in the front-rear direction.
• the second movement drive unit 96 may include, for example, an unillustrated motor as a driving source.
• the second movement drive unit 96 may include, for example, an unillustrated air cylinder as a driving source.
• the second movement drive unit 96 is electrically connected to the controller 26 (see FIG. 3 ).
• the yarns Y held by the yarn threading member 50 are threaded to the respective bobbins B attached to the bobbin holder 13 at the upper position, from the left side of the bobbins B (see FIG. 10 ).
• each bobbin holder 13 is rotationally driven counterclockwise when viewed from the above (see full-line arrows in FIG. 2 and FIG. 10 ).
• the yarns Y to be threaded to the respective bobbins B from the yarn threading member 50 are pulled by the bobbins B (see FIG. 10 ).
• the yarn threading to the bobbins B is performed in such a way that the operator operates the suction gun 80 (see, e.g. , FIG. 5 ).
• the suction gun 80 is a member configured to suck and hold the yarns Y together.
• the yarn threading to the bobbins B is performed from a space in front of the yarn winder 5 (see FIG. 5 ).
• the yarns Y having been threaded to the fulcrum guides 15 are converged toward the suction gun 80.
• the pitch in the front-rear direction of the yarns Y narrows toward the suction gun 80.
• the bobbin holder 13B In an initial state, no yarns Y are wound on the bobbins B attached to the bobbin holder 13A and the bobbins B attached to the other bobbin holder 13 (hereinafter, the bobbin holder 13B).
• the yarn catching portions 41 are at the retracted positions (see FIG. 2 and FIG. 5 ) and the yarn holding portions 51 are at the standby positions (see FIG. 2 ).
• the bobbin holder 13A is at the lower position whereas the bobbin holder 13B is at the upper position (not illustrated).
• the controller 26 swings the first swing members 42 together by controlling the first movement drive unit 94, so as to move the yarn catching portions 41 from the retracted positions to the catching positions (see full-line arrows in FIG. 6 ).
• the yarn catching portions 41 are arranged to catch the yarns Y having been threaded to the respective fulcrum guides 15, at the catching positions between the retracted positions and the handover positions (see FIG. 6 ).
• the yarn catching portions 41 are arranged to catch the yarns Y at the catching positions (shown in FIG. 6 ) that are between the fulcrum guides 15 and the contact roller 17 in the up-down direction and are closer to the fulcrum guides 15 than the contact roller 17.
• the controller 26 controls the turret motor 91 to rotate the turret 12 counterclockwise. As a result, each bobbin holder 13 is moved to a position where the bobbin holder 13 and the yarn threading member 50 do not interfere with each other even when the yarn threading member 50 swings (see full-line arrows in FIG. 6 ).
• the controller 26 swings the second swing members 52 by controlling the second movement drive unit 96, so as to move the yarn holding portions 51 from the standby positions to the receiving positions (see full-line arrows in FIG. 6 ).
• the controller 26 further swings the first swing members 42 together by controlling the first movement drive unit 94, so as to move the yarn catching portions 41 from the catching positions to the handover positions (see full-line arrows in FIG. 7 ).
• the yarns Y caught by the yarn catching portions 41 make contact with the yarn holding portions 51 of the yarn threading member 50.
• the controller 26 controls the slide drive unit 95 to move the yarn catching unit 40 from the rear side (one side in the arrangement direction) toward the front side (the other side in the arrangement direction) in the front-rear direction (see a full-line arrow in FIG. 8 ).
• the yarns Y caught by the yarn catching portions 41 are inserted into the slits 54 (see FIG. 4(b) ) formed in the yarn holding portions 51.
• the controller 26 controls the first movement drive unit 94 to swing the first swing members 42 together, and moves the yarn catching portions 41 from the handover positions to the retracted positions (see full-line arrows in FIG. 9 ).
• the yarn catching portions 41 move from the handover positions to the retracted positions while the yarns Y are inserted into the respective slits 54, the yarns Y are detached from the yarn catching portions 41. In this way, the handover of the yarns Y from the yarn catching unit 40 to the yarn threading member 50 is completed.
• the controller 26 swings the second swing members 52 by controlling the second movement drive unit 96, so as to temporarily move the yarn holding portions 51 from the receiving positions to the standby positions (see full-line arrows in FIG. 9 ).
• the yarn threading member 50 is moved to a position where the bobbin holder 13 and the yarn threading member 50 do not interfere with each other even when each bobbin holder 13 moves.
• the controller 26 then controls the turret motor 91 to rotate the turret 12 counterclockwise (see full-line arrows in FIG. 10 ). Accordingly, the bobbin holder 13A is moved to the upper position (see full-line arrows in FIG. 10 ) .
• the controller 26 swings the second swing members 52 by controlling the second movement drive unit 96, so as to move the yarn holding portions 51 from the standby positions to the yarn threading positions (see full-line arrows in FIG. 10 ).
• the yarns Y held by the yarn holding portions 51 come close to the bobbins B attached to the bobbin holder 13A at the upper position.
• the yarns Y that are close to the respective bobbins B are then threaded to the slits (not illustrated) formed in the front or rear end portions in the front-rear direction of the bobbins B. In this way, the yarn threading to the bobbins B attached to the bobbin holder 13A is completed.
• the contact roller 17 moves leftward and downward and makes contact with the bobbins B attached to the bobbin holder 13A.
• the yarn winder 5 of the present embodiment includes: the bobbin holder 13 to which the bobbins B are attached to be aligned along the front-rear direction; the fulcrum guides 15 which are provided above the bobbin holder 13 to be aligned in the front-rear direction and to correspond to the respective bobbins B; the contact roller 17 which is provided at a position above the bobbin holder 13 and below the fulcrum guides 15; the yarn catching unit 40; and the yarn threading unit 45.
• the yarn catching unit 40 has the yarn catching portions 41 aligned in the front-rear direction, and is configured to catch the yarns Y having been threaded to the fulcrum guides 15, by using the yarn catching portions 41.
• the yarn threading unit 45 has the yarn holding portions 51 aligned in the front-rear direction, and is configured to receive, by the yarn holding portions 51, the yarns Y caught by the yarn catching unit 40, and to thread the received yarns Y to the respective bobbins B.
• the yarn catching portions 41 are arranged to catch the yarns Y at positions that are between the fulcrum guides 15 and the contact roller 17 in the up-down direction and are closer to the fulcrum guides 15 than the contact roller 17.
• the yarn catching portions 41 are arranged to be movable to the handover positions (see FIG. 7 and FIG. 8 ) where the caught yarns Y are handed over to the yarn holding portions 51.
• the position that is closer to the fulcrum guide 15 than the contact roller 17 in the up-down direction is a position in a region that is on the fulcrum guide 15 side of an intermediate position between the contact roller 17 and the fulcrum guide 15 in the up-down direction.
• the yarn catching portions 41 are close to the fulcrum guides 15 in the up-down direction, and are therefore able to catch the yarns Y whose pitch in the front-rear direction is long. It is therefore possible to cause the yarn catching unit 40 to accurately and easily catch the yarns Y. Furthermore, according to the present embodiment, as the yarn catching portions 41 are moved to the handover positions, the yarns Y are smoothly handed over to the yarn holding portions 51. It is therefore possible to accurately and easily thread the yarns Y having been threaded to the fulcrum guides 15 to the bobbins B.
• the interval in the front-rear direction between the yarn catching portions 41 is identical with the interval in the front-rear direction between the yarn holding portions 51, and the yarn catching unit 40 hands the yarns Y over to the yarn holding portions 51 while keeping the interval in the front-rear direction between the yarn catching portions 41 having caught the yarns Y to be constant.
• the yarn catching portions 41 are arranged to be movable to the retracted positions where they do not make contact with the yarns Y that are threaded to the fulcrum guides 15 and wound onto the bobbins B. This makes it possible to prevent the yarns Y from making contact with the respective yarn catching portions 41 by moving the yarn catching portions 41 to the retracted positions, when the yarns Y are wound onto the bobbins B by the yarn winder 5.
• the yarn catching portions 41 are arranged to catch the yarns Y having been threaded to the respective fulcrum guides 15, while moving from the retracted positions to the handover positions. With this arrangement, as the yarn catching portions 41 are moved from the retracted positions to the handover positions, the yarns Y having been threaded to the fulcrum guides 15 are smoothly caught.
• the yarn catching unit 40 includes the first swing members 42 which support the yarn catching portions 41 and are swingable about the shafts (first swing shafts 43) extending along the front-rear direction.
• the yarn catching portions 41 move between the retracted positions and the handover positions as the first swing members 42 are swung. This arrangement makes it possible to move the yarn catching portions 41 with a relatively simple structure.
• the yarn winder 5 of the present embodiment includes the first movement drive unit 94 which is configured to move the yarn catching portions 41 between the retracted positions and the handover positions. This arrangement allows the first movement drive unit 94 to move the yarn catching portions 41 and allows the yarn catching portions 41 to catch the yarns Y without needing the intervention of the operator. This makes it possible to further easily perform the yarn threading.
• the yarn threading unit 45 has the yarn threading member 50 in which the yarn holding portions 51 are formed.
• the yarn holding portions 51 having received the yarns Y from the yarn catching portions 41 are moved to the yarn threading positions where the yarns Y are threaded to the bobbins B.
• the yarns Y having been threaded to the fulcrum guides 15 can be threaded to the bobbins B by two members, i.e., the yarn catching unit 40 and the yarn threading member 50. In this way, it is possible to suppress the number of components from increasing.
• the first swing member 42 is arranged to be swingable without making contact with the yarn catching unit 40 and the contact roller 17. With this arrangement, it is unnecessary to provide an arrangement for retracting the contact roller 17 to avoid the contact between the yarn catching unit member 40 and the contact roller 17 when the yarn catching portions 41 are moved. On this account, with the relatively simple arrangement, it is possible to prevent the components from being damaged due to the contact between the yarn catching unit 40 and the contact roller 17.
• the slit 54 is formed to be open on the rear side in the front-rear direction.
• the yarn catching unit member 40 is arranged to be movable in the front-rear direction.
• the yarn catching unit 40 moves from the rear side toward the front side in the front-rear direction.
• the yarns Y caught by the yarn catching portions 41 are inserted into the slits 54 formed in the respective yarn holding portions 51. While the yarns Y are inserted into the respective slits 54, the yarn catching portions 41 move from the handover positions to the retracted positions.
• the yarn threading member 50 includes the second swing member 52 which supports the yarn holding portions 51 and is swingable about the axis extending in the front-rear direction. As the second swing member 52 swings, the yarn holding portions 51 move between the receiving positions and the yarn threading positions. On this account, it is possible to move the yarn holding portions 51 with the relatively simple arrangement.
• the yarn threading unit 45 has the second movement drive unit 96 which is configured to move the yarn holding portions 51 between the receiving positions and the yarn threading positions.
• each yarn holding portion 51 can be moved by the second movement drive unit 96, and the yarns Y received by the yarn holding portions 51 can be threaded to the bobbins B without needing the intervention by the operator. This makes it possible to further easily perform the yarn threading.
• the yarn winder 5 of the present embodiment includes the two bobbin holders 13 which are in parallel to each other, and the two bobbin holders 13 are movable between the upper position where the yarn Y is wound onto each bobbin B and the lower position that is lower than the upper position.
• the two bobbin holders 13 are arranged to be switchable between the upper position and the lower position, if a member such as a yarn convergence guide is provided as in the known arrangement (e.g., Patent Literature 1), the yarn winder 5 becomes disadvantageously complicated in structure.
• the yarn winder 5 of the present embodiment in which members such as the yarn convergence guide are unnecessary, even though the two bobbin holders 13 are movable between the upper position and the lower position, the device structure is further simplified and the yarn threading can be further easily done.
• the interval in the front-rear direction between the yarn holding portions 51 is substantially identical with the interval in the front-rear direction between the yarn catching portions 41.
• the interval in the front-rear direction between the yarn holding portions 51 may be different from the interval between the yarn catching portions 41 in the front-rear direction.
• the yarn catching unit 40 causes the yarn catching portions 41 to catch the yarns Y and then changes the interval in the front-rear direction between the yarn catching portions 41 to be substantially identical with the interval in the front-rear direction between the yarn holding portions 51. Subsequently, the yarn catching unit 40 hands the yarns Y over from the yarn catching portions 41 to the yarn holding portions 51.
• the interval in the front-rear direction between the yarn holding portions 51 is substantially identical with the interval in the front-rear direction between the bobbins B.
• the interval in the front-rear direction between the yarn holding portions 51 may be different from the interval between the bobbins B in the front-rear direction.
• the interval in the front-rear direction between the yarn holding portions 51 is changeable.
• the yarn catching unit 40 includes the first swing members 42 which support the respective yarn catching portions 41.
• the yarn catching unit 40 may include a single first swing member 42 which supports the yarn catching portions 41 together.
• the yarn threading member 50 includes a single second swing member 52 which supports the yarn holding portions 51 together.
• the yarn threading member 50 may include plural second swing members 52 which supports the respective yarn holding portions 51.
• the yarn catching unit 40 is arranged to move between the retracted position and the handover position as the first swing members 42 are swung.
• the arrangement for moving the yarn catching unit 40 is not limited to this arrangement.
• the yarn catching unit 40 may move between the retracted position and the handover position by linearly moving along a rail extending in a predetermined direction.
• the yarn threading member 50 is arranged to move between the standby position, the receiving position, and the yarn threading position as the second swing members 52 are swung.
• the arrangement for moving the yarn threading member 50 is not limited to this arrangement.
• the yarn threading member 50 may move between the standby position, the receiving position, and the yarn threading position by linearly moving along a rail extending in a predetermined direction.
• the first movement drive unit 94 is provided to move the yarn catching unit 40 between the retracted position and the handover position.
• the yarn catching unit 40 may be manually movable between the retracted position and the handover position.
• the second movement drive unit 96 is provided to move the yarn threading member 50 between the receiving position and the yarn threading position.
• the yarn threading member 50 may be manually movable between the receiving position and the yarn threading position.
• the yarn threading member 50 is movable between the standby position, the receiving position, and the yarn threading position. In this regard, the yarn threading member 50 may not be able to take the standby position.
• the yarn threading member 50 may be fixed to the yarn threading position.
• the handover position of the yarn catching unit 40 is a position where the yarns Y can be handed over to the yarn threading member 50 at the yarn threading position.
• the yarn winder 5 of the embodiment above is provided with the two bobbin holders 13.
• the yarn winder 5 may include a single bobbin holder 13.
• each yarn holding portion 51 has the slit 54 that is open on the rear side in the front-rear direction.
• the slit 54 may be open on the front side in the front-rear direction.
• the yarn catching unit 40 at the handover position moves from the front side toward the rear side in the front-rear direction, with the result that the yarns Y caught by the yarn catching portions 41 are inserted into the slits 54 formed in the respective yarn holding portions 51.
• the slit 54 may not be formed in each yarn holding portion 51. In this case, each yarn holding portion 51 has a part where the yarn Y can be held.
• the yarn catching unit 40 having been moved from the retracted position to the catching position in order to catch the yarns Y having been threaded to the fulcrum guides 15 may or may not be stopped at the catching position.
• the controller 26 moves the yarn threading member 50 to the receiving position before the yarn catching unit 40 reaches the handover position.
• the yarn threading member 50 may move to the receiving position before the yarn catching unit 40 starts the movement from the retracted position to the handover position.
• the yarn threading unit 45 includes the yarn threading member 50 which is configured to thread the yarns Y to the respective bobbins B attached to the bobbin holder 13 (bobbin holder 13A) at the upper position, from the left side of the bobbins B (see FIG. 10 ).
• the yarn threading unit is not limited to this arrangement.
• the yarn threading unit 145 includes a yarn threading member 60 which is configured to thread the yarns Y to the respective bobbins B attached to the bobbin holder 13 (bobbin holder 13A) at the upper position, from the right side of the bobbins B.
• the yarn threading member 60 is provided with yarn holding portions (not illustrated) which are aligned in the front-rear direction.
• the yarn threading member 60 is configured to receive, by the yarn holding portions, the yarns Y caught by the yarn catching unit 40.
• the yarn threading member 60 is movable to the yarn threading position where the yarns Y received by the yarn holding portions are threaded to the bobbins B.
• the yarn threading position of the yarn threading member 60 is rightward of and below the bobbins B, for example.
• the yarn threading unit may include a yarn threading member (e.g., the above-described yarn threading member 60; hereinafter, a right yarn threading member) provided to the right of the bobbin holder 13 at the upper position and a yarn threading member (e.g., the yarn threading member 50 of the embodiment above; hereinafter, a left yarn threading member) provided to the left of the bobbin holder 13 at the upper position.
• the right yarn threading member and the left yarn threading member are arranged to be able to hand the yarns Y over form the right yarn threading member to the left yarn threading member.
• the yarns Y caught by the yarn catching unit 40 are handed over to the right yarn threading member.
• the yarns Y having been handed over to the right yarn threading member are further handed over to the left yarn threading member.
• the yarns Y having been handed over to the left yarn threading member are threaded to the respective bobbins B from the left side of the bobbins B.
• the distribution guides of the present invention are not limited to the fulcrum guides 15.
• the distribution guides may be guides provided upstream of the fulcrum guides 15 in the yarn running direction.
• the interval in the front-rear direction between the distribution guides is, for example, substantially identical with the interval in the front-rear direction of the fulcrum guides 15.
• the yarn threading to the bobbins B is performed in such a way that the operator operates the suction gun 80.
• the yarn threading to the bobbins B may be performed in such a way that a robotic arm operates the suction gun 80 attached to the leading end of the arm.
• the present invention can be applied to various yarn winders each of which is configured to wind yarns Y.

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• Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
• Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
• Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

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Citations (3)

• 2024
  • 2024-04-16 JP JP2024066036A patent/JP2025162689A/ja active Pending
• 2025
  • 2025-02-26 CN CN202510216447.0A patent/CN120829088A/zh active Pending
  • 2025-03-13 EP EP25163509.0A patent/EP4635886A1/de active Pending

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