EP3418231B1 - Yarn winder - Google Patents
Yarn winder Download PDFInfo
- Publication number
- EP3418231B1 EP3418231B1 EP18176945.6A EP18176945A EP3418231B1 EP 3418231 B1 EP3418231 B1 EP 3418231B1 EP 18176945 A EP18176945 A EP 18176945A EP 3418231 B1 EP3418231 B1 EP 3418231B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- longitudinal direction
- frame
- roller
- rigidity improving
- yarn winder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004804 winding Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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
- 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
- B65H54/40—Arrangements for rotating packages
- B65H54/52—Drive contact pressure control, e.g. pressing 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
- B65H54/40—Arrangements for rotating packages
- B65H54/44—Arrangements for rotating packages in which the package, core, or former is engaged with, or secured to, a driven member rotatable about the axis of the package
-
- 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
- B65H54/72—Framework; Casings; Coverings
-
- 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
-
- 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 including a contact roller applying a contact pressure to a package.
- the winder includes a bobbin holder which extends in the front-rear direction and to which bobbins are attached to be lined up, a traverse unit provided above the bobbin holder to traverse yarns, and a contact roller which extends in the axial direction of the bobbin holder and is configured to apply a contact pressure to each of packages formed by winding yarns onto the bobbins.
- the contact roller extends along the front-rear direction and is rotatably supported by a roller supporting member.
- the roller supporting member includes two arm portions (hereinafter, supporting portions) which rotatably support end portions in the front-rear direction of the contact roller and extend radially outward from the radial center of the contact roller.
- the two supporting portions are connected to each other by a plate-shaped portion (hereinafter, plate member) which extends along the front-rear direction.
- plate member When viewed in the front-rear direction, the plate member overlaps the supporting portions and is sandwiched between the bobbin holder and the traverse unit.
- JP 2008 290821 A discloses a yarn winder according to the preamble of claim 1.
- the contact roller and the roller supporting member are also elongated in the front-rear direction accordingly.
- the bending rigidity of the roller supporting member is decreased in the front-rear direction, and this may cause problems such as vibrations generated by the driving of the yarn winder.
- the cross-sectional area of the plate member in the direction orthogonal to the front-rear direction may be increased.
- the plate member is sandwiched between the bobbin holder and the traverse unit. On this account, it is necessary to relocate the bobbin holder and the traverse unit to create a space, when the cross-sectional area of the plate member is increased. This causes increase in the size of the yarn winder.
- An object of the present invention is to improve the rigidity of a roller supporting member while restraining an apparatus from being increased in size.
- a yarn winder includes: a bobbin holder which extends in a predetermined longitudinal direction, bobbins on which yarns are wound, respectively, being attached to the bobbin holder to be lined up in the longitudinal direction; a traverse unit which is configured to traverse the yarns; a contact roller which extends in the longitudinal direction and is configured to apply a contact pressure to packages which are formed by winding, onto the bobbins, the yarns having been traversed by the traverse unit; and a roller supporting member which supports the contact roller to be rotatable, the roller supporting member including: supporting portions which rotatably support at least end portions in the longitudinal direction of the contact roller and extend at least radially outward from a radial central portion of the contact roller; and a rigidity improving member which extends in the longitudinal direction and to which the supporting portions are fixed, the rigidity improving member being provided so as not to overlap the bobbin holder and the traverse unit when viewed in the longitudinal direction, and when viewed in
- the contact roller is configured to apply the contact pressure to the packages formed by winding the traversed yarns onto the bobbins and is provided in the vicinity of the bobbin holder and the traverse unit.
- the supporting portions supporting the end portions in the longitudinal direction of the contact roller are therefore provided in the vicinity of the bobbin holder and the traverse unit, too.
- the supporting portions are fixed, and the rigidity improving member is provided so as not to overlap the bobbin holder and the traverse unit when viewed in the longitudinal direction.
- the rigidity improving member has a part which is longer than the supporting portions in the direction orthogonal to the direction in which the supporting portions extend.
- the bending rigidity of the roller supporting member is improved in the longitudinal direction. It is therefore possible to improve the bending rigidity or the like of the roller supporting member while avoiding interference with the bobbin holder and the traverse unit. In this way, the rigidity of the roller supporting member is improved while restraining increase in size of the apparatus.
- the yarn winder further includes: a frame which extends in the longitudinal direction and supports the roller supporting member, wherein, a cross section of at least a part in the longitudinal direction of the rigidity improving member, which is taken along a direction orthogonal to the longitudinal direction, at least partially surrounds a cross section of the frame taken along the direction orthogonal to the longitudinal direction.
- a cross section in the direction orthogonal to the longitudinal direction of at least a part of the rigidity improving member is shaped to at least partially surround the frame. To put it differently, the rigidity improving member and the frame share a part of the space where the frame is provided. As a result, the cross-sectional area is enlarged while increase in size of the apparatus is restrained.
- the yarn winder of the first aspect is arranged such that, when viewed in the longitudinal direction, at least a part of the rigidity improving member is provided so as not to overlap the supporting portions.
- the overlapped part When viewed in the longitudinal direction, in case where the rigidity improving member is provided to overlap the supporting portions, the overlapped part is located between the contact roller and the traverse unit. It is therefore difficult to increase the cross-sectional area taken along the direction orthogonal to the longitudinal direction. According to the present invention, the cross-sectional area is increased at the part where the rigidity improving member does not overlap the supporting portions when viewed in the longitudinal direction, with the result that the rigidity of the roller supporting member is further improved.
- the yarn winder of the first or second aspect is arranged such that each of the supporting portions is a rod-shaped or plate-shaped and is long in the radial direction.
- a space is formed in the region surrounded by the contact roller, the supporting portions, and the rigidity improving member. Because the rigidity of the roller supporting member is improved by the rigidity improving member even when the supporting portions are rod-shaped or plate-shaped and extend in the radial direction, the other members or the like can be provided in the above-described space while the rigidity of the roller supporting member is improved, with the result that the apparatus is downsized.
- the yarn winder of the invention is arranged such that a cross section of at least a part in the longitudinal direction of the rigidity improving member, which is taken along the direction orthogonal to the longitudinal direction, entirely surrounds the cross section of the frame in the direction orthogonal to the longitudinal direction.
- the rigidity of the rigidity improving member when the cross section of at least a part of the rigidity improving member in the direction orthogonal to the longitudinal direction is shaped to entirely surround the frame, the rigidity of the rigidity improving member is significantly improved.
- the rigidity of the roller supporting member is therefore significantly improved while increase in size of the apparatus is restrained.
- the yarn winder of the fourth aspect is arranged such that the rigidity improving member is cylindrical in shape and extends in the longitudinal direction.
- the rigidity improving member is cylindrical in shape and extends in the longitudinal direction, and the rigidity improving member on the whole entirely surrounds the frame in cross section taken in the direction orthogonal to the longitudinal direction.
- the rigidity of the roller supporting member is therefore further improved.
- the yarn winder of any one of the first to fifth aspects is arranged such that the roller supporting member is supported by the frame to be swingable about a swing shaft extending in the longitudinal direction.
- the roller supporting member is supported to be swingable. This indicates that the entirety of the roller supporting member and the entirety of the contact roller do not move. Because it is unnecessary to provide a space for allowing the roller supporting member, etc. to move and a guide member or the like for guiding the roller supporting member, it is possible to restrain increase in size of the apparatus.
- the yarn winder of the sixth aspect is arranged such that the frame is polygonal in shape when viewed in the longitudinal direction, and the swing shaft is provided at a fixed portion which is fixed to one of outer circumferential surfaces of the frame, the one of the surfaces not being a surface closest to the contact roller when viewed in the longitudinal direction.
- the rigidity improving member and the frame tends to interfere with each other if the swing angle of the roller supporting member is large.
- the swing shaft is provided in the fixed portions which are fixed to a surface which is not the surface closest to the contact roller among the surfaces of the frame. Because the swing shaft is positioned so that the distance between the swing shaft and the rotation shaft of the contact roller is long, the swing range of the contact roller is arranged to be wide even though the swing angle of the roller supporting member is small. Furthermore, because the swing angle of the roller supporting member when the contact roller swings is small, interference between the rigidity improving member and the frame is avoidable.
- the yarn winder of the sixth aspect is arranged such that the frame has a top surface, and the swing shaft is provided at the fixed portion fixed to the top surface.
- the swing shaft is provided at the fixed portions fixed to the top surface of the frame. Because the downward force acting on the frame due to the weight of the roller supporting member is stably received by the top surface, a stable structure is realized.
- the yarn winder of any one of the sixth to eighth aspects is arranged such that the frame is rectangular in shape when viewed in the longitudinal direction.
- the frame is a quadrangular prism in shape, processing is easily done in the manufacture.
- FIG. 1 is a profile of a take-up apparatus 1 including a yarn winder 4 (detailed later) of the present embodiment.
- the left-right direction in the sheet of FIG. 1 will be referred to as a front-rear direction (longitudinal direction in the present invention).
- the direction in which gravity acts will be referred to as an up-down direction
- a direction orthogonal to the front-rear direction and the up-down direction i.e., a direction perpendicular to the sheet of the figure
- the take-up apparatus 1 includes a first godet roller 11, a second godet roller 12, and a yarn regulating guide 16 for taking up yarns Y spun out from a spinning apparatus 3, and a yarn winder 4 configured to form packages P by winding the taken-up yarns Y onto bobbins B.
- the first godet roller 11 is a roller having an axis substantially in parallel to the left-right direction and is provided above a front end portion of the yarn winder 4.
- the first godet roller 11 is rotationally driven by a motor which is not illustrated.
- the second godet roller 12 is a roller having an axis substantially in parallel to the left-right direction and is provided above and rearward of the first godet roller 11.
- the second godet roller 12 is rotationally driven by a motor which is not illustrated.
- the second godet roller 12 is movably supported by a guide rail 14.
- the guide rail 14 extends obliquely upward and rearward.
- the second godet roller 12 is arranged to be movable along the guide rail 14 by members such as a pulley pair, a belt, and a drive motor which are not illustrated. With this, the second godet roller 12 is movable between a position where winding of the yarns Y is performed and a position which is close to the first godet roller 11 and where yarn threading is performed.
- the position of the second godet roller 12 when the yarns Y are wound is indicated by full lines
- the position of the second godet roller 12 when the yarn threading operation is performed is indicated by one-dot chain lines.
- the yarn regulating guide 16 is provided above the first godet roller 11.
- the yarn regulating guide 16 is, for example, a known yarn guide with a comb teeth shape.
- the yarn regulating guide 16 regulates the interval between neighboring yarns Y to a predetermined value.
- FIG. 2 is a front elevation of the yarn winder 4.
- the yarn winder 4 includes members such as: a base 20; fulcrum guides 21; a traverse unit 22; a turret 23; two bobbin holders 24; a contact roller 25; a roller supporting member 26; and a frame 27.
- the base 20 is provided to vertically extend at a rear portion of the yarn winder 4.
- the base 20 supports members such as the turret 23 and the frame 27.
- the fulcrum guides 21 are provided for the yarns Y, respectively, and are lined up in the front-rear direction. As the yarns Y are threaded onto the respective fulcrum guides 21, the fulcrum guides 21 function as fulcrums of the traversal of the respective yarns Y.
- the traverse unit 22 is provided to traverse the yarns Y.
- the traverse unit 22 is attached to a later-described rib 41, and is provided above the contact roller 25.
- the traverse unit 22 includes traverse guides 28.
- the traverse guides 28 are respectively provided for the yarns Y, and are lined up in the front-rear direction.
- Each traverse guide 28 is driven by a traverse motor (not illustrated) and reciprocates in the front-rear direction.
- the yarns Y are traversed by the respective traverse guides 28 about the respective fulcrum guides 21.
- the turret 23 is a disc-shaped member having an axis substantially in parallel to the front-rear direction, and is rotatably supported by the base 20.
- the turret 23 is rotationally driven by a turret motor which is not illustrated.
- the turret 23 cantilevers two bobbin holders 24, and moves the two bobbin holders 24 by rotating about a rotation axis substantially in parallel to the front-rear direction.
- bobbins B are attached to each of the two bobbin holders 24, bobbins B are attached.
- the two bobbin holders 24 are rotatably supported at an upper end portion and a lower end portion of the turret 23 supported by the base 20, respectively, and protrude forward from the turret 23.
- the two bobbin holders 24 are cantilevered by the base 20 which is provided on the rear side.
- the axes of the two bobbin holders 24 are substantially in parallel to the front-rear direction.
- Bobbins B are attached to each bobbin holder 24.
- the bobbins B are respectively provided for the yarns Y and lined up in the front-rear direction.
- the number of the bobbins B attached to one bobbin holder 24 is, for example, 16.
- the two bobbin holders 24 are rotationally driven by their respective winding motors (not illustrated).
- the contact roller 25 is a roller having an axis substantially in parallel to the front-rear direction and is provided at a position which is above the upper bobbin holder 24 and below the traverse unit 22.
- the contact roller 25 is configured to make contact with the surfaces of the packages P supported by the upper bobbin holder 24. With this, the contact roller 25 applies a contact pressure to the surfaces of the unfinished packages P, to adjust the shape of each package P.
- the contact roller 25 is a so-called swing arm contact roller which is swingably supported by the frame 27 via the roller supporting member 26.
- the roller supporting member 26 is a member for rotatably supporting the contact roller 25.
- the roller supporting member 26 extends in the front-rear direction. The details of the roller supporting member 26 will be given later.
- the frame 27 is a column-shaped member extending in the front-rear direction, and is fixed to an upper part of the base 20.
- the frame 27 supports the roller supporting member 26 to be swingable. The details of the frame 27 will be given later.
- the yarn winder 4 structured as described above, when the upper bobbin holder 24 is rotationally driven, the yarns Y traversed by the traverse guides 28 are wound onto the bobbins B, with the result that the packages P are formed.
- the shape of each package P is adjusted in such a way that the contact roller 25 makes contact with the surface of the package P and applies a contact pressure while the package P is being formed.
- the turret 23 rotates in the direction indicated by the solid arrow in FIG. 2 as the diameter of the package P increases (i.e., the package P grows fat) due to the winding of the yarn Y onto the bobbin B.
- the distance between the bobbin holder 24 to which the bobbins B onto which the yarns Y are wound and the contact roller 25 is increased. Because the contact roller 25 is swingably supported by the frame 27, the contact roller 25 swings in accordance with the movement of the bobbin holder 24 and the packages P (see the dotted arrow in FIG. 2 ). With this, the contact between the contact roller 25 and the packages P is maintained.
- the bobbin holder 24 has recently been further elongated in the front-rear direction to increase the number of bobbins B attachable to the bobbin holder 24 at once.
- the contact roller 25 and the roller supporting member 26 are also elongated in the front-rear direction.
- the bending rigidity of the roller supporting member 26 is decreased, and this may cause problems such as vibrations of the roller supporting member 26 generated by the driving of the yarn winder 4.
- the cross-sectional area of the roller supporting member 26 in the direction orthogonal to the front-rear direction may be increased.
- the roller supporting member 26 and the frame 27 are arranged as described below.
- FIG. 3 is a perspective view of a front portion of the roller supporting member 26 and its surroundings.
- FIG. 4 is a plan view of the roller supporting member 26 and its surroundings.
- FIG. 5(a) is a cross section taken along a line V(a)-V(a) in FIG. 4 .
- FIG. 5(b) is a cross section taken along a line V(b)-V(b) in FIG. 4 .
- FIGs. 6(a) and 6(b) show the swing of the contact roller 25.
- the frame 27 will be described first.
- the frame 27 is substantially rectangular in shape when viewed in the front-rear direction, and is a hollow quadrangular prism extending in the front-rear direction. When viewed in the front-rear direction, each side of the frame 27 is, for example, about 150mm long.
- the frame 27 has a top surface 43 (see FIG. 5 ), and fixed portions 44 where a later-described swing shaft 45 is provided are fixed in the vicinity of the end portions in the front-rear direction of the top surface 43.
- the roller supporting member 26 rotatably supports the contact roller 25.
- the roller supporting member 26 includes arm members 31 (supporting members of the present invention) and a rigidity improving member 32.
- the arm members 31 support the respective end portions in the front-rear direction of the contact roller 25.
- Each of the arm members 31F and 31R is a plate member which extends leftward and upward (i.e., radially outward) from a radial central portion of the contact roller 25.
- the arm member 31F rotatably supports the front end portion of the contact roller 25 whereas the arm member 31R rotatably supports the rear end portion of the contact roller 25.
- the contact roller 25 is rotatable about a rotation shaft 46 (see FIG. 5 ).
- the width of each of the arm members 31F and 31R increases radially outward from the radial central portion of the contact roller 25 (see FIG. 5 ).
- the arm members 31F and 31R are fixed to the rigidity improving member 32.
- the rigidity improving member 32 is provided to improve the bending rigidity of the roller supporting member 26.
- the rigidity improving member 32 is substantially cylindrical in shape and extends in the front-rear direction (see FIG. 3 ).
- the rigidity improving member 32 is formed of a member which is different from the two arm members 31.
- the rigidity improving member 32 when viewed in the front-rear direction, is hollow and substantially rectangular in shape, and each side of the rigidity improving member 32 is, for example, about 230mm long.
- the circumferential part of the rigidity improving member 32 is, for example, about 20mm in thickness.
- each side of the hollow area of the rigidity improving member 32 is about 190mm long, and is longer than the side of the frame 27 (about 150mm long) described above.
- the rigidity improving member 32 on the whole is shaped in such a way that the cross section of the rigidity improving member 32 taken in the direction orthogonal to the front-rear direction entirely surrounds the cross section of the frame 27 taken in the direction orthogonal to the front-rear direction.
- the rib 41 is formed across the entire length in the front-rear direction of the rigidity improving member 32 so as to protrude rightward and downward.
- the rib 41 is provided to allow the traverse unit 22 to be placed thereon.
- a radially outer part of the arm member 31F is fixed by fixing tools 42 (see FIG. 3 and FIG. 5(a) ).
- a radially outer part of the arm member 31R is fixed. In this way, the two arm members 31F and 31R are fixed to the respective end portions in the front-rear direction of the rigidity improving member 32.
- the rigidity improving member 32 When viewed in the front-rear direction, the rigidity improving member 32 is provided to surround the frame 27. To put it differently, the frame 27 is provided inside the rigidity improving member 32 when viewed in the front-rear direction. The gap between the rigidity improving member 32 and the frame 27 is about 20mm long. The rigidity improving member 32 is provided at a position which is leftward and above the bobbin holder 24 and to the left of the traverse unit 22 (see FIG. 5(a) ). In this way, the rigidity improving member 32 is provided so as not to overlap the bobbin holder 24 and the traverse unit 22 when viewed in the front-rear direction.
- the rigidity improving member 32 is provided outside a region sandwiched between the bobbin holder 24 and the traverse unit 22.
- the rigidity improving member 32 is longer than the arm member 31 in a direction (orthogonal direction in FIG. 5(b) ) orthogonal to the direction (extending direction in FIG. 5(b) ) in which the arm member 31 extends.
- the rigidity improving member 32, the arm member 31F, and the arm member 31R do not overlap one another except at parts where they are fixed to one another.
- at least a part of the rigidity improving member 32 do not overlap the arm members 31F and 31R.
- the rigidity improving member 32 is supported by the frame 27 to be swingable.
- the fixed portions 44 of the frame 27 are provided with the swing shaft 45 which extends along the front-rear direction.
- the rigidity improving member 32 i.e., the entire roller supporting member 26
- the contact roller 25 is swingably supported via the roller supporting member 26.
- the swing shaft 45 may be arranged such that two shafts support the front end portion and the rear end portion of the rigidity improving member 32, respectively, or such that a single shaft extends across the entire length in the front-rear direction of the rigidity improving member 32.
- the rigidity improving member 32 is provided so as not to overlap the bobbin holder 24 and the traverse unit 22 when viewed in the front-rear direction. On this account, the bending rigidity or the like of the roller supporting member 26 is improved by the rigidity improving member 32 while avoiding interference with the bobbin holder 24 and the traverse unit 22. Furthermore, because the rigidity improving member 32 is shaped to entirely surround the frame 27 in cross section as described above, the rigidity improving member 32 and the frame 27 share a part of the space where the frame 27 is provided, and the rigidity improving member 32 has high rigidity.
- the fixed portions 44 in which the swing shaft 45 is provided are fixed to the top surface 43. With this arrangement, the downward force acting on the frame 27 due to the weight of the roller supporting member 26 is stably received by the top surface 43. Furthermore, the swing range of the contact roller 25 is widened and interference between the roller supporting member 26 and the frame 27 is suppressed, as described below. If, as shown in FIG. 6(a) , the fixed portions 44 are fixed to a right side surface of the frame 27 which is the closest to the contact roller 25 among the outer circumferential surfaces of the frame 27, the distance between the swing shaft 45 and the rotational shaft 46 of the contact roller 25 is short when viewed in the front-rear direction.
- the swing angle of the roller supporting member 26 when the contact roller 25 swings is large, with the result that the frame 27 and the rigidity improving member 32 surrounding the frame 27 tend to interfere with each other (see two-dot chain lines in FIG. 6(a) ).
- the fixed portions 44 are fixed to a surface other than the right side surface, i.e., fixed to the top surface 43 as shown in FIG. 6(b) , the above-described distance is relatively long.
- the swing range of the contact roller 25 relative to the swing angle of the roller supporting member 26 is therefore wide (see two-dot chain lines in FIG. 6(b) ).
- the swing angle of the roller supporting member 26 when the contact roller 25 swings is small, interference between the rigidity improving member 32 and the frame 27 is less likely to occur.
- the rigidity improving member 32 is fixed to the radially outer parts of the arm members 31 and is provided so as not to overlap the bobbin holder 24 and the traverse unit 22 when viewed in the front-rear direction. Furthermore, when viewed in the front-rear direction, the rigidity improving member 32 has a part which is longer than the arm member 31 in the direction orthogonal to the direction in which the arm member 31 extends. With this rigidity improving member 32, the bending rigidity of the roller supporting member 26 is improved in the front-rear direction. It is therefore possible to improve the bending rigidity or the like of the roller supporting member 26 while avoiding interference with the bobbin holder 24 and the traverse unit 22. In this way, the rigidity of the roller supporting member 26 is improved while restraining increase in size of the yarn winder 4.
- the rigidity improving member 32 When viewed in the front-rear direction, at least a part of the rigidity improving member 32 is provided so as not to overlap the arm members 31F and 31R.
- the cross-sectional area of the rigidity improving member 32 in the direction orthogonal to the front-rear direction is increase at this part, and hence the rigidity of the roller supporting member 26 is further improved.
- a space is formed in the region surrounded by the contact roller 25, the arm members 31F and 31R, and the rigidity improving member 32. Because the rigidity of the roller supporting member 26 is improved by the rigidity improving member 32 even when the arm members 31F and 31R are plate-shaped and extend in the radial direction as described above, members such as the traverse unit 22 can be provided in the above-described space while the rigidity of the roller supporting member 26 is improved, with the result that the yarn winder 4 is downsized.
- the rigidity improving member 32 is cylindrical in shape and extends in the front-rear direction, and the rigidity improving member 32 on the whole entirely surrounds the frame in cross section taken in the direction orthogonal to the front-rear direction. In this way, the rigidity improving member 32 and the frame 27 share a part of the space where the frame 27 is provided, and rigidity improving member 32 has high rigidity. The rigidity of the roller supporting member 26 is therefore significantly improved while increase in size of the apparatus is restrained.
- the roller supporting member 26 is supported to be swingable. This indicates that the entirety of the roller supporting member 26 and the entirety of the contact roller 25 do not move. Because it is unnecessary to provide a space for allowing the roller supporting member 26, etc. to move and a guide member or the like for guiding the roller supporting member 26, it is possible to restrain increase in size of the apparatus.
- the swing shaft 45 is provided in the fixed portions 44 which are fixed to a surface (the top surface 43 in the present embodiment) which is not the surface closest to the contact roller 25 among the surfaces of the frame 27. Because the swing shaft 45 is positioned so that the distance between the swing shaft 45 and the rotation shaft 46 of the contact roller 25 is long, the swing range of the contact roller 25 is arranged to be wide even though the swing angle of the roller supporting member 26 is small. Furthermore, because the swing angle of the roller supporting member 26 when the contact roller 25 swings is small, interference between the rigidity improving member 32 and the frame 27 is avoidable.
- the swing shaft 45 is provided at the fixed portions 44 fixed to the top surface 43 of the frame 27. Because the downward force acting on the frame 27 due to the weight of the roller supporting member 26 is stably received by the top surface 43, a stable structure is realized.
- the frame 27 is a quadrangular prism in shape, processing is easily done in the manufacture.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Winding Filamentary Materials (AREA)
Description
- The present invention relates to a yarn winder including a contact roller applying a contact pressure to a package.
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DE 10 2006 001 041 A1 recites a yarn winder which is configured to wind yarns. To be more specific, the winder includes a bobbin holder which extends in the front-rear direction and to which bobbins are attached to be lined up, a traverse unit provided above the bobbin holder to traverse yarns, and a contact roller which extends in the axial direction of the bobbin holder and is configured to apply a contact pressure to each of packages formed by winding yarns onto the bobbins. The contact roller extends along the front-rear direction and is rotatably supported by a roller supporting member. The roller supporting member includes two arm portions (hereinafter, supporting portions) which rotatably support end portions in the front-rear direction of the contact roller and extend radially outward from the radial center of the contact roller. The two supporting portions are connected to each other by a plate-shaped portion (hereinafter, plate member) which extends along the front-rear direction. When viewed in the front-rear direction, the plate member overlaps the supporting portions and is sandwiched between the bobbin holder and the traverse unit. -
JP 2008 290821 A claim 1. - When the bobbin holder is elongated in the front-rear direction to increase the number of bobbins attachable to the bobbin holder, the contact roller and the roller supporting member are also elongated in the front-rear direction accordingly. As a result of this, the bending rigidity of the roller supporting member is decreased in the front-rear direction, and this may cause problems such as vibrations generated by the driving of the yarn winder. To increase the rigidity of the roller supporting member, the cross-sectional area of the plate member in the direction orthogonal to the front-rear direction may be increased. However, as described above, the plate member is sandwiched between the bobbin holder and the traverse unit. On this account, it is necessary to relocate the bobbin holder and the traverse unit to create a space, when the cross-sectional area of the plate member is increased. This causes increase in the size of the yarn winder.
- An object of the present invention is to improve the rigidity of a roller supporting member while restraining an apparatus from being increased in size.
- According to the first aspect of the invention, a yarn winder includes: a bobbin holder which extends in a predetermined longitudinal direction, bobbins on which yarns are wound, respectively, being attached to the bobbin holder to be lined up in the longitudinal direction; a traverse unit which is configured to traverse the yarns; a contact roller which extends in the longitudinal direction and is configured to apply a contact pressure to packages which are formed by winding, onto the bobbins, the yarns having been traversed by the traverse unit; and a roller supporting member which supports the contact roller to be rotatable, the roller supporting member including: supporting portions which rotatably support at least end portions in the longitudinal direction of the contact roller and extend at least radially outward from a radial central portion of the contact roller; and a rigidity improving member which extends in the longitudinal direction and to which the supporting portions are fixed, the rigidity improving member being provided so as not to overlap the bobbin holder and the traverse unit when viewed in the longitudinal direction, and when viewed in the longitudinal direction, the rigidity improving member having a part which is longer than each of the supporting portions in a direction orthogonal to the direction in which the supporting portions extend.
- The contact roller is configured to apply the contact pressure to the packages formed by winding the traversed yarns onto the bobbins and is provided in the vicinity of the bobbin holder and the traverse unit. The supporting portions supporting the end portions in the longitudinal direction of the contact roller are therefore provided in the vicinity of the bobbin holder and the traverse unit, too. According to the present invention, the supporting portions are fixed, and the rigidity improving member is provided so as not to overlap the bobbin holder and the traverse unit when viewed in the longitudinal direction. Furthermore, when viewed in the longitudinal direction, the rigidity improving member has a part which is longer than the supporting portions in the direction orthogonal to the direction in which the supporting portions extend. With this rigidity improving member, the bending rigidity of the roller supporting member is improved in the longitudinal direction. It is therefore possible to improve the bending rigidity or the like of the roller supporting member while avoiding interference with the bobbin holder and the traverse unit. In this way, the rigidity of the roller supporting member is improved while restraining increase in size of the apparatus.
- According to the invention, the yarn winder further includes: a frame which extends in the longitudinal direction and supports the roller supporting member, wherein, a cross section of at least a part in the longitudinal direction of the rigidity improving member, which is taken along a direction orthogonal to the longitudinal direction, at least partially surrounds a cross section of the frame taken along the direction orthogonal to the longitudinal direction.
- The longer the cross-sectional area of the rigidity improving member in the direction orthogonal to the longitudinal direction is, the more the rigidity of the roller supporting member is improved. However, when the cross-sectional area is simply enlarged, the rigidity improving member may interfere with another member or the like, and upsizing of the apparatus may be unavoidable. According to the present invention, a cross section in the direction orthogonal to the longitudinal direction of at least a part of the rigidity improving member is shaped to at least partially surround the frame. To put it differently, the rigidity improving member and the frame share a part of the space where the frame is provided. As a result, the cross-sectional area is enlarged while increase in size of the apparatus is restrained.
- According to the second aspect of the invention, the yarn winder of the first aspect is arranged such that, when viewed in the longitudinal direction, at least a part of the rigidity improving member is provided so as not to overlap the supporting portions.
- When viewed in the longitudinal direction, in case where the rigidity improving member is provided to overlap the supporting portions, the overlapped part is located between the contact roller and the traverse unit. It is therefore difficult to increase the cross-sectional area taken along the direction orthogonal to the longitudinal direction. According to the present invention, the cross-sectional area is increased at the part where the rigidity improving member does not overlap the supporting portions when viewed in the longitudinal direction, with the result that the rigidity of the roller supporting member is further improved.
- According to the third aspect of the invention, the yarn winder of the first or second aspect is arranged such that each of the supporting portions is a rod-shaped or plate-shaped and is long in the radial direction.
- According to the present invention, a space is formed in the region surrounded by the contact roller, the supporting portions, and the rigidity improving member. Because the rigidity of the roller supporting member is improved by the rigidity improving member even when the supporting portions are rod-shaped or plate-shaped and extend in the radial direction, the other members or the like can be provided in the above-described space while the rigidity of the roller supporting member is improved, with the result that the apparatus is downsized.
- According to the fourth aspect of the invention, the yarn winder of the invention is arranged such that a cross section of at least a part in the longitudinal direction of the rigidity improving member, which is taken along the direction orthogonal to the longitudinal direction, entirely surrounds the cross section of the frame in the direction orthogonal to the longitudinal direction.
- According to the present invention, when the cross section of at least a part of the rigidity improving member in the direction orthogonal to the longitudinal direction is shaped to entirely surround the frame, the rigidity of the rigidity improving member is significantly improved. The rigidity of the roller supporting member is therefore significantly improved while increase in size of the apparatus is restrained.
- According to the fifth aspect of the invention, the yarn winder of the fourth aspect is arranged such that the rigidity improving member is cylindrical in shape and extends in the longitudinal direction.
- According to the present invention, the rigidity improving member is cylindrical in shape and extends in the longitudinal direction, and the rigidity improving member on the whole entirely surrounds the frame in cross section taken in the direction orthogonal to the longitudinal direction. The rigidity of the roller supporting member is therefore further improved.
- According to the sixth aspect of the invention, the yarn winder of any one of the first to fifth aspects is arranged such that the roller supporting member is supported by the frame to be swingable about a swing shaft extending in the longitudinal direction.
- According to the present invention, the roller supporting member is supported to be swingable. This indicates that the entirety of the roller supporting member and the entirety of the contact roller do not move. Because it is unnecessary to provide a space for allowing the roller supporting member, etc. to move and a guide member or the like for guiding the roller supporting member, it is possible to restrain increase in size of the apparatus.
- According to the seventh aspect of the invention, the yarn winder of the sixth aspect is arranged such that the frame is polygonal in shape when viewed in the longitudinal direction, and the swing shaft is provided at a fixed portion which is fixed to one of outer circumferential surfaces of the frame, the one of the surfaces not being a surface closest to the contact roller when viewed in the longitudinal direction.
- When at least a part of the rigidity improving member at least partially surrounds the frame and the roller supporting member is swingably supported by the frame, the rigidity improving member and the frame tends to interfere with each other if the swing angle of the roller supporting member is large. In the present invention, the swing shaft is provided in the fixed portions which are fixed to a surface which is not the surface closest to the contact roller among the surfaces of the frame. Because the swing shaft is positioned so that the distance between the swing shaft and the rotation shaft of the contact roller is long, the swing range of the contact roller is arranged to be wide even though the swing angle of the roller supporting member is small. Furthermore, because the swing angle of the roller supporting member when the contact roller swings is small, interference between the rigidity improving member and the frame is avoidable.
- According to the eighth aspect of the invention, the yarn winder of the sixth aspect is arranged such that the frame has a top surface, and the swing shaft is provided at the fixed portion fixed to the top surface.
- In the present invention, the swing shaft is provided at the fixed portions fixed to the top surface of the frame. Because the downward force acting on the frame due to the weight of the roller supporting member is stably received by the top surface, a stable structure is realized.
- According to the ninth aspect of the invention, the yarn winder of any one of the sixth to eighth aspects is arranged such that the frame is rectangular in shape when viewed in the longitudinal direction.
- In the present invention, because the frame is a quadrangular prism in shape, processing is easily done in the manufacture.
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FIG. 1 is a profile of a take-up apparatus including a yarn winder of an embodiment. -
FIG. 2 is a front elevation of the yarn winder. -
FIG. 3 is a perspective view of a front portion of a roller supporting member and its surroundings. -
FIG. 4 is a plan view of the roller supporting member and its surroundings. -
FIG. 5(a) is a cross section taken along a line V(a)-V(a) inFIG. 4 , whereasFIG. 5(b) is a cross section taken along a line V(b)-V(b) inFIG. 4 . -
FIGs. 6(a) and 6(b) show the swing of a contact roller. -
FIG. 7 is a perspective view of a front portion of a roller supporting member and its surroundings according to a modification. -
FIG. 8 is a perspective view of a front portion of a roller supporting member and its surroundings according to another modification. -
FIG. 9 is a cross section of a roller supporting member and its surroundings according to a further modification. - The following will describe an embodiment of the present invention with reference to
FIG. 1 to FIG. 6 . -
FIG. 1 is a profile of a take-upapparatus 1 including a yarn winder 4 (detailed later) of the present embodiment. Hereinafter, the left-right direction in the sheet ofFIG. 1 will be referred to as a front-rear direction (longitudinal direction in the present invention). Furthermore, the direction in which gravity acts will be referred to as an up-down direction, whereas a direction orthogonal to the front-rear direction and the up-down direction (i.e., a direction perpendicular to the sheet of the figure) will be referred to as a left-right direction. - The take-up
apparatus 1 includes afirst godet roller 11, asecond godet roller 12, and ayarn regulating guide 16 for taking up yarns Y spun out from aspinning apparatus 3, and ayarn winder 4 configured to form packages P by winding the taken-up yarns Y onto bobbins B. - The
first godet roller 11 is a roller having an axis substantially in parallel to the left-right direction and is provided above a front end portion of theyarn winder 4. Thefirst godet roller 11 is rotationally driven by a motor which is not illustrated. Thesecond godet roller 12 is a roller having an axis substantially in parallel to the left-right direction and is provided above and rearward of thefirst godet roller 11. Thesecond godet roller 12 is rotationally driven by a motor which is not illustrated. - The
second godet roller 12 is movably supported by aguide rail 14. Theguide rail 14 extends obliquely upward and rearward. Thesecond godet roller 12 is arranged to be movable along theguide rail 14 by members such as a pulley pair, a belt, and a drive motor which are not illustrated. With this, thesecond godet roller 12 is movable between a position where winding of the yarns Y is performed and a position which is close to thefirst godet roller 11 and where yarn threading is performed. InFIG. 1 , the position of thesecond godet roller 12 when the yarns Y are wound is indicated by full lines, whereas the position of thesecond godet roller 12 when the yarn threading operation is performed is indicated by one-dot chain lines. - The
yarn regulating guide 16 is provided above thefirst godet roller 11. Theyarn regulating guide 16 is, for example, a known yarn guide with a comb teeth shape. When the yarns Y are threaded thereon, theyarn regulating guide 16 regulates the interval between neighboring yarns Y to a predetermined value. - The following will describe the
yarn winder 4 with reference toFIG. 1 andFIG. 2. FIG. 2 is a front elevation of theyarn winder 4. Theyarn winder 4 includes members such as: a base 20; fulcrum guides 21; atraverse unit 22; aturret 23; twobobbin holders 24; acontact roller 25; aroller supporting member 26; and aframe 27. - The
base 20 is provided to vertically extend at a rear portion of theyarn winder 4. Thebase 20 supports members such as theturret 23 and theframe 27. - The fulcrum guides 21 are provided for the yarns Y, respectively, and are lined up in the front-rear direction. As the yarns Y are threaded onto the respective fulcrum guides 21, the fulcrum guides 21 function as fulcrums of the traversal of the respective yarns Y.
- The
traverse unit 22 is provided to traverse the yarns Y. Thetraverse unit 22 is attached to a later-describedrib 41, and is provided above thecontact roller 25. Thetraverse unit 22 includes traverse guides 28. The traverse guides 28 are respectively provided for the yarns Y, and are lined up in the front-rear direction. Eachtraverse guide 28 is driven by a traverse motor (not illustrated) and reciprocates in the front-rear direction. The yarns Y are traversed by the respective traverse guides 28 about the respective fulcrum guides 21. - The
turret 23 is a disc-shaped member having an axis substantially in parallel to the front-rear direction, and is rotatably supported by thebase 20. Theturret 23 is rotationally driven by a turret motor which is not illustrated. Theturret 23 cantilevers twobobbin holders 24, and moves the twobobbin holders 24 by rotating about a rotation axis substantially in parallel to the front-rear direction. With this arrangement, it is possible in theyarn winder 4 to swap the positions of the twobobbin holders 24, and hence replacement of the bobbins B is possible at onebobbin holder 24 while yarns Y are wound onto the bobbins B attached to theother bobbin holder 24. Furthermore, theturret 23 is arranged to be rotatable in accordance with an increase in amount of the wound yarn Y when the yarn is wound onto to the bobbin B (see the solid arrow inFIG. 2 ). - To each of the two
bobbin holders 24, bobbins B are attached. The twobobbin holders 24 are rotatably supported at an upper end portion and a lower end portion of theturret 23 supported by thebase 20, respectively, and protrude forward from theturret 23. To put it differently, the twobobbin holders 24 are cantilevered by the base 20 which is provided on the rear side. The axes of the twobobbin holders 24 are substantially in parallel to the front-rear direction. - Bobbins B are attached to each
bobbin holder 24. The bobbins B are respectively provided for the yarns Y and lined up in the front-rear direction. The number of the bobbins B attached to onebobbin holder 24 is, for example, 16. The twobobbin holders 24 are rotationally driven by their respective winding motors (not illustrated). - The
contact roller 25 is a roller having an axis substantially in parallel to the front-rear direction and is provided at a position which is above theupper bobbin holder 24 and below thetraverse unit 22. Thecontact roller 25 is configured to make contact with the surfaces of the packages P supported by theupper bobbin holder 24. With this, thecontact roller 25 applies a contact pressure to the surfaces of the unfinished packages P, to adjust the shape of each package P. In the present embodiment, as described below, thecontact roller 25 is a so-called swing arm contact roller which is swingably supported by theframe 27 via theroller supporting member 26. - The
roller supporting member 26 is a member for rotatably supporting thecontact roller 25. Theroller supporting member 26 extends in the front-rear direction. The details of theroller supporting member 26 will be given later. - The
frame 27 is a column-shaped member extending in the front-rear direction, and is fixed to an upper part of thebase 20. Theframe 27 supports theroller supporting member 26 to be swingable. The details of theframe 27 will be given later. - In the
yarn winder 4 structured as described above, when theupper bobbin holder 24 is rotationally driven, the yarns Y traversed by the traverse guides 28 are wound onto the bobbins B, with the result that the packages P are formed. The shape of each package P is adjusted in such a way that thecontact roller 25 makes contact with the surface of the package P and applies a contact pressure while the package P is being formed. Theturret 23 rotates in the direction indicated by the solid arrow inFIG. 2 as the diameter of the package P increases (i.e., the package P grows fat) due to the winding of the yarn Y onto the bobbin B. As a result, the distance between thebobbin holder 24 to which the bobbins B onto which the yarns Y are wound and thecontact roller 25 is increased. Because thecontact roller 25 is swingably supported by theframe 27, thecontact roller 25 swings in accordance with the movement of thebobbin holder 24 and the packages P (see the dotted arrow inFIG. 2 ). With this, the contact between thecontact roller 25 and the packages P is maintained. - In consideration of the production efficiency, the
bobbin holder 24 has recently been further elongated in the front-rear direction to increase the number of bobbins B attachable to thebobbin holder 24 at once. In accordance with this, thecontact roller 25 and theroller supporting member 26 are also elongated in the front-rear direction. As a result of this, the bending rigidity of theroller supporting member 26 is decreased, and this may cause problems such as vibrations of theroller supporting member 26 generated by the driving of theyarn winder 4. To increase the bending rigidity, etc. of theroller supporting member 26, the cross-sectional area of theroller supporting member 26 in the direction orthogonal to the front-rear direction may be increased. However, when the cross-sectional area is increased, it is necessary to relocate thebobbin holder 24 and thetraverse unit 22 to create a space. This causes increase in the size of theyarn winder 4. In this circumstance, in the present embodiment, theroller supporting member 26 and theframe 27 are arranged as described below. - The
roller supporting member 26 and theframe 27 will be detailed with reference toFIG. 3 to FIG. 6 .FIG. 3 is a perspective view of a front portion of theroller supporting member 26 and its surroundings.FIG. 4 is a plan view of theroller supporting member 26 and its surroundings.FIG. 5(a) is a cross section taken along a line V(a)-V(a) inFIG. 4 .FIG. 5(b) is a cross section taken along a line V(b)-V(b) inFIG. 4 .FIGs. 6(a) and 6(b) show the swing of thecontact roller 25. - The
frame 27 will be described first. Theframe 27 is substantially rectangular in shape when viewed in the front-rear direction, and is a hollow quadrangular prism extending in the front-rear direction. When viewed in the front-rear direction, each side of theframe 27 is, for example, about 150mm long. Theframe 27 has a top surface 43 (seeFIG. 5 ), and fixedportions 44 where a later-describedswing shaft 45 is provided are fixed in the vicinity of the end portions in the front-rear direction of thetop surface 43. - Now, the
roller supporting member 26 will be described. As described above, theroller supporting member 26 rotatably supports thecontact roller 25. As shown inFIG. 3 to FIG. 5 , theroller supporting member 26 includes arm members 31 (supporting members of the present invention) and arigidity improving member 32. - The arm members 31 (
arm members contact roller 25. Each of thearm members contact roller 25. Thearm member 31F rotatably supports the front end portion of thecontact roller 25 whereas thearm member 31R rotatably supports the rear end portion of thecontact roller 25. With this arrangement, thecontact roller 25 is rotatable about a rotation shaft 46 (seeFIG. 5 ). When viewed in the front-rear direction, the width of each of thearm members FIG. 5 ). As described below, thearm members rigidity improving member 32. - The
rigidity improving member 32 is provided to improve the bending rigidity of theroller supporting member 26. Therigidity improving member 32 is substantially cylindrical in shape and extends in the front-rear direction (seeFIG. 3 ). In the present embodiment, therigidity improving member 32 is formed of a member which is different from the twoarm members 31. As shown inFIG. 5 , when viewed in the front-rear direction, therigidity improving member 32 is hollow and substantially rectangular in shape, and each side of therigidity improving member 32 is, for example, about 230mm long. The circumferential part of therigidity improving member 32 is, for example, about 20mm in thickness. In other words, each side of the hollow area of therigidity improving member 32 is about 190mm long, and is longer than the side of the frame 27 (about 150mm long) described above. In this way, therigidity improving member 32 on the whole is shaped in such a way that the cross section of therigidity improving member 32 taken in the direction orthogonal to the front-rear direction entirely surrounds the cross section of theframe 27 taken in the direction orthogonal to the front-rear direction. - At a lower part of a right side wall of the
rigidity improving member 32, therib 41 is formed across the entire length in the front-rear direction of therigidity improving member 32 so as to protrude rightward and downward. Therib 41 is provided to allow thetraverse unit 22 to be placed thereon. - To a front end portion of the right side wall of the
rigidity improving member 32, a radially outer part of thearm member 31F is fixed by fixing tools 42 (seeFIG. 3 andFIG. 5(a) ). Similarly, to a rear end portion of the right side wall of therigidity improving member 32, a radially outer part of thearm member 31R is fixed. In this way, the twoarm members rigidity improving member 32. - When viewed in the front-rear direction, the
rigidity improving member 32 is provided to surround theframe 27. To put it differently, theframe 27 is provided inside therigidity improving member 32 when viewed in the front-rear direction. The gap between therigidity improving member 32 and theframe 27 is about 20mm long. Therigidity improving member 32 is provided at a position which is leftward and above thebobbin holder 24 and to the left of the traverse unit 22 (seeFIG. 5(a) ). In this way, therigidity improving member 32 is provided so as not to overlap thebobbin holder 24 and thetraverse unit 22 when viewed in the front-rear direction. To put it differently, therigidity improving member 32 is provided outside a region sandwiched between thebobbin holder 24 and thetraverse unit 22. When viewed in the front-rear direction, therigidity improving member 32 is longer than thearm member 31 in a direction (orthogonal direction inFIG. 5(b) ) orthogonal to the direction (extending direction inFIG. 5(b) ) in which thearm member 31 extends. When viewed in the front-rear direction, therigidity improving member 32, thearm member 31F, and thearm member 31R do not overlap one another except at parts where they are fixed to one another. To put it differently, when viewed in the front-rear direction, at least a part of therigidity improving member 32 do not overlap thearm members - As shown in
FIG. 3 to FIG. 5 , therigidity improving member 32 is supported by theframe 27 to be swingable. The fixedportions 44 of theframe 27 are provided with theswing shaft 45 which extends along the front-rear direction. About thisswing shaft 45, the rigidity improving member 32 (i.e., the entire roller supporting member 26) is swingably supported by theframe 27. As a result, thecontact roller 25 is swingably supported via theroller supporting member 26. Theswing shaft 45 may be arranged such that two shafts support the front end portion and the rear end portion of therigidity improving member 32, respectively, or such that a single shaft extends across the entire length in the front-rear direction of therigidity improving member 32. - In the
roller supporting member 26 structured as above, therigidity improving member 32 is provided so as not to overlap thebobbin holder 24 and thetraverse unit 22 when viewed in the front-rear direction. On this account, the bending rigidity or the like of theroller supporting member 26 is improved by therigidity improving member 32 while avoiding interference with thebobbin holder 24 and thetraverse unit 22. Furthermore, because therigidity improving member 32 is shaped to entirely surround theframe 27 in cross section as described above, therigidity improving member 32 and theframe 27 share a part of the space where theframe 27 is provided, and therigidity improving member 32 has high rigidity. - In addition to the above, because the
arm members rigidity improving member 32, respectively, a space is formed in the region surrounded by thecontact roller 25, thearm members rigidity improving member 32. By using a part of this space, thetraverse unit 22 is attached to therib 41 from above (seeFIG. 3 andFIG. 5(a) ). - The fixed
portions 44 in which theswing shaft 45 is provided are fixed to thetop surface 43. With this arrangement, the downward force acting on theframe 27 due to the weight of theroller supporting member 26 is stably received by thetop surface 43. Furthermore, the swing range of thecontact roller 25 is widened and interference between theroller supporting member 26 and theframe 27 is suppressed, as described below. If, as shown inFIG. 6(a) , the fixedportions 44 are fixed to a right side surface of theframe 27 which is the closest to thecontact roller 25 among the outer circumferential surfaces of theframe 27, the distance between theswing shaft 45 and therotational shaft 46 of thecontact roller 25 is short when viewed in the front-rear direction. The swing angle of theroller supporting member 26 when thecontact roller 25 swings is large, with the result that theframe 27 and therigidity improving member 32 surrounding theframe 27 tend to interfere with each other (see two-dot chain lines inFIG. 6(a) ). In this regard, in the present embodiment, because the fixedportions 44 are fixed to a surface other than the right side surface, i.e., fixed to thetop surface 43 as shown inFIG. 6(b) , the above-described distance is relatively long. The swing range of thecontact roller 25 relative to the swing angle of theroller supporting member 26 is therefore wide (see two-dot chain lines inFIG. 6(b) ). Furthermore, because the swing angle of theroller supporting member 26 when thecontact roller 25 swings is small, interference between therigidity improving member 32 and theframe 27 is less likely to occur. - As described above, the
rigidity improving member 32 is fixed to the radially outer parts of thearm members 31 and is provided so as not to overlap thebobbin holder 24 and thetraverse unit 22 when viewed in the front-rear direction. Furthermore, when viewed in the front-rear direction, therigidity improving member 32 has a part which is longer than thearm member 31 in the direction orthogonal to the direction in which thearm member 31 extends. With thisrigidity improving member 32, the bending rigidity of theroller supporting member 26 is improved in the front-rear direction. It is therefore possible to improve the bending rigidity or the like of theroller supporting member 26 while avoiding interference with thebobbin holder 24 and thetraverse unit 22. In this way, the rigidity of theroller supporting member 26 is improved while restraining increase in size of theyarn winder 4. - When viewed in the front-rear direction, at least a part of the
rigidity improving member 32 is provided so as not to overlap thearm members rigidity improving member 32 in the direction orthogonal to the front-rear direction is increase at this part, and hence the rigidity of theroller supporting member 26 is further improved. - In addition to the above, a space is formed in the region surrounded by the
contact roller 25, thearm members rigidity improving member 32. Because the rigidity of theroller supporting member 26 is improved by therigidity improving member 32 even when thearm members traverse unit 22 can be provided in the above-described space while the rigidity of theroller supporting member 26 is improved, with the result that theyarn winder 4 is downsized. - In addition to the above, the
rigidity improving member 32 is cylindrical in shape and extends in the front-rear direction, and therigidity improving member 32 on the whole entirely surrounds the frame in cross section taken in the direction orthogonal to the front-rear direction. In this way, therigidity improving member 32 and theframe 27 share a part of the space where theframe 27 is provided, andrigidity improving member 32 has high rigidity. The rigidity of theroller supporting member 26 is therefore significantly improved while increase in size of the apparatus is restrained. - The
roller supporting member 26 is supported to be swingable. This indicates that the entirety of theroller supporting member 26 and the entirety of thecontact roller 25 do not move. Because it is unnecessary to provide a space for allowing theroller supporting member 26, etc. to move and a guide member or the like for guiding theroller supporting member 26, it is possible to restrain increase in size of the apparatus. - In addition to the above, the
swing shaft 45 is provided in the fixedportions 44 which are fixed to a surface (thetop surface 43 in the present embodiment) which is not the surface closest to thecontact roller 25 among the surfaces of theframe 27. Because theswing shaft 45 is positioned so that the distance between theswing shaft 45 and therotation shaft 46 of thecontact roller 25 is long, the swing range of thecontact roller 25 is arranged to be wide even though the swing angle of theroller supporting member 26 is small. Furthermore, because the swing angle of theroller supporting member 26 when thecontact roller 25 swings is small, interference between therigidity improving member 32 and theframe 27 is avoidable. - The
swing shaft 45 is provided at the fixedportions 44 fixed to thetop surface 43 of theframe 27. Because the downward force acting on theframe 27 due to the weight of theroller supporting member 26 is stably received by thetop surface 43, a stable structure is realized. - In addition to the above, because the
frame 27 is a quadrangular prism in shape, processing is easily done in the manufacture. - The following will describe modifications of the above-described embodiment. The members identical with those in the embodiment above will be denoted by the same reference numerals and the explanations thereof are not repeated.
- (1) While in the embodiment above the
rigidity improving member 32 on the whole is arranged so that the cross section thereof taken in the direction orthogonal to the front-rear direction entirely surrounds theframe 27, the disclosure is not limited to this arrangement. For example, because anopening 47 is formed in an upper surface portion of arigidity improving member 32a of aroller supporting member 26a as shown inFIG. 7 , the cross section entirely surrounds theframe 27 only at a part of therigidity improving member 32a. As such, when the cross section of at least a part of therigidity improving member 32a (e.g., the front end portion inFIG. 6 ) is shaped to entirely surround theframe 27, the rigidity of therigidity improving member 32a is significantly improved. The rigidity of theroller supporting member 26a is therefore significantly improved.
In addition to the above, when theopening 47 is suitably formed, weight reduction is achieved while the rigidity of theroller supporting member 26a is maintained to be high, with the result that the resonance frequency of theroller supporting member 26a is increased and the vibrations of theroller supporting member 26a are suppressed. - (2) For example, as shown in
FIG. 8 , theframe 27 may be only partially surrounded, as arigidity improving member 32b of aroller supporting member 26b does not have a lower surface portion (i.e., the cross section is reverse U-shaped). In addition to the above, only a part of therigidity improving member 32b in the front-rear direction may be shaped to partially surround theframe 27. To put it differently, the cross section of at least a part of therigidity improving member 32 in the front-rear direction may be shaped to at least partially surround theframe 27. Even in such a case, the cross-sectional area is increased while increase in size of the apparatus is restrained, because therigidity improving member 32b and theframe 27 share a part of the space where theframe 27 is provided. While in this modification therigidity improving member 32b does not have a lower surface portion, the rigidity improving member may not have, for example, a left side wall. - (3) The shape of the rigidity improving member may be different from the above. For example, as shown in
FIG. 9(a) , the cross section of arigidity improving member 32c of aroller supporting member 26c is ring-shaped. Alternatively, for example, as shown inFIG. 9(b) , and not forming part of the claimed invention, cross section of arigidity improving member 32d of aroller supporting member 26d is a solid rectangle and does not surround theframe 27. As such, the rigidity improving member may be variously shaped on condition that the rigidity improving member is provided so as not to overlap thebobbin holder 24 and thetraverse unit 22 when viewed in the front-rear direction. In this case, as shown inFIG. 9(b) , the fixedportions 44 may be fixed to the right side surface of theframe 27, i.e., the surface closest to thecontact roller 25 when viewed in the front-rear direction. Therigidity improving member rib 41. - (4) The position of the fixed
portions 44 is not limited to the above. The fixedportions 44 may be fixed to a bottom surface or a left side surface of theframe 27. - (5) While in the embodiment above the two
arm members 31 which are plate-shaped and extend in the radial direction of thecontact roller 25 are supporting portions supporting thecontact roller 25 to be rotatable, the disclosure is not limited to this arrangement. The two arm members may, for example, be rod-shaped and extend in the radial direction. Alternatively, for example, the twoarm members 31 may be connected to each other by a plate member (not illustrated) which extends along the front-rear direction. In this case, the twoarm members 31 and the plate member constitute the supporting portion of the present invention. In other words, the supporting portion may extend in a direction different from the radial direction of thecontact roller 25. The twoarm members 31 may be independent from the plate member, or these members may be integrally formed.
While in the embodiment above the end portions in the front-rear direction of thecontact roller 25 are rotatably supported by thearm members 31, the disclosure is not limited to this arrangement. An arm member supporting a central portion of the contact roller may be provided in addition to those supporting the end portions. - (6) While in the embodiment above the
rigidity improving member 32 and thearm members 31 are independent members, these members may be integrally formed. - (7) The
frame 27 may not be a substantially hollow rectangular in shape but be a hollow polygonal in shape, when viewed in the front-rear direction. Alternatively, the frame may be a solid circle in shape. In other words, the frame may not have a top surface. - (8) While in the embodiment above the
contact roller 25 is provided above thebobbin holder 24 and below thetraverse unit 22, thecontact roller 25 may be differently positioned. For example, thecontact roller 25 and thebobbin holder 24 may be provided side by side. - (9) While in the embodiment above the
rigidity improving member 32 is provided leftward and above thebobbin holder 24 and to the left of thetraverse unit 22, the disclosure is not limited to this arrangement. For example, the present invention may be employed in a yarn winder which is left-right symmetrical as compared to the above-describedyarn winder 4. Therigidity improving member 32 may be provided rightward of and above thebobbin holder 24 and to the right of thetraverse unit 22. - (10) In relation to the modification (9), the present invention may be employed in two yarn winders which are left-right symmetrical with each other and are provided to be side by side in the left-right direction. Alternatively, for example, the present invention may be employed in an integrated yarn winder including members such as two turrets which are left-right symmetrical with each other, two bobbin holders, and two contact rollers, which is shown in, for example, Japanese Unexamined Patent Publication No.
2003-238031 - (11) While in the embodiment above the
contact roller 25 is swingably supported by theframe 27, the disclosure is not limited to this arrangement. For example, the present invention may be applied to a yarn winder including a so-called linear-motion-type moving mechanism with which a supporting member supporting acontact roller 25 moves up and down while keeping its posture (see e.g., Japanese Unexamined Patent Publication No.2012-158436 roller supporting member 26 may not be supported by theframe 27 but be directly attached to thebase 20.
Claims (9)
- A yarn winder (4) comprising:a bobbin holder (24) which extends in a predetermined longitudinal direction, bobbins (B) on which yarns (Y) are wound, respectively, being attached to the bobbin holder (24) to be lined up in the longitudinal direction;a traverse unit (22) which is configured to traverse the yarns (Y);a contact roller (25) which extends in the longitudinal direction and is configured to apply a contact pressure to packages (P) which are formed by winding, onto the bobbins (B), the yarns (Y) having been traversed by the traverse unit (22); anda roller supporting member (26) which supports the contact roller (25) to be rotatable,the roller supporting member (26) including:supporting portions (31) which rotatably support at least end portions in the longitudinal direction of the contact roller (25) and extend at least radially outward from a radial central portion of the contact roller (25) ; anda rigidity improving member (32) which extends in the longitudinal direction and to which the supporting portions (31) are fixed, the rigidity improving member (32) being provided so as not to overlap the bobbin holder (24) and the traverse unit (22) when viewed in the longitudinal direction, andwhen viewed in the longitudinal direction, the rigidity improving member (32) having a part which is longer than each of the supporting portions (31) in a direction orthogonal to the direction in which the supporting portions (31) extend, wherein the yarn winder (4) further comprisesa frame (27) which extends in the longitudinal direction and supports the roller supporting member (26), characterized in that a cross section of at least a part in the longitudinal direction of the rigidity improving member (32), which is taken along a direction orthogonal to the longitudinal direction, at least partially surrounds a cross section of the frame (27) taken along the direction orthogonal to the longitudinal direction.
- The yarn winder (4) according to claim 1, wherein, when viewed in the longitudinal direction, at least a part of the rigidity improving member (32) is provided so as not to overlap the supporting portions (31).
- The yarn winder (4) according to claim 1 or 2, wherein, each of the supporting portions (31) is a rod-shaped or plate-shaped and is long in the radial direction.
- The yarn winder (4) according to any one of claims 1 to 3, wherein, a cross section of at least a part in the longitudinal direction of the rigidity improving member (32), which is taken along the direction orthogonal to the longitudinal direction, entirely surrounds the cross section of the frame (27) in the direction orthogonal to the longitudinal direction.
- The yarn winder (4) according to claim 4, wherein, the rigidity improving member (32) is cylindrical in shape and extends in the longitudinal direction.
- The yarn winder (4) according to any one of claims 1 to 5, wherein, the roller supporting member (26) is supported by the frame (27) to be swingable about a swing shaft (45) extending in the longitudinal direction.
- The yarn winder (4) according to claim 6, wherein, the frame (27) is polygonal in shape when viewed in the longitudinal direction, and
the swing shaft (45)
is provided at a fixed portion which is fixed to one of outer circumferential surfaces of the frame (27), the one of the surfaces not being a surface closest to the contact roller (25) when viewed in the longitudinal direction. - The yarn winder (4) according to claim 6, wherein,
the frame (27) has a top surface (43), and
the swing shaft (45) is provided at the fixed portion fixed to the top surface (43). - The yarn winder (4) according to any one of claims 6 to 8, wherein, the frame (27) is rectangular in shape when viewed in the longitudinal direction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017121462A JP6935243B2 (en) | 2017-06-21 | 2017-06-21 | Thread winder |
Publications (2)
Publication Number | Publication Date |
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EP3418231A1 EP3418231A1 (en) | 2018-12-26 |
EP3418231B1 true EP3418231B1 (en) | 2020-08-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18176945.6A Active EP3418231B1 (en) | 2017-06-21 | 2018-06-11 | Yarn winder |
Country Status (3)
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EP (1) | EP3418231B1 (en) |
JP (2) | JP6935243B2 (en) |
CN (2) | CN113911831B (en) |
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2017
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2018
- 2018-06-01 CN CN202111185018.XA patent/CN113911831B/en active Active
- 2018-06-01 CN CN201810557878.3A patent/CN109095274B/en active Active
- 2018-06-11 EP EP18176945.6A patent/EP3418231B1/en active Active
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2021
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Also Published As
Publication number | Publication date |
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JP6935243B2 (en) | 2021-09-15 |
JP2019006527A (en) | 2019-01-17 |
CN109095274A (en) | 2018-12-28 |
CN113911831B (en) | 2022-11-04 |
CN113911831A (en) | 2022-01-11 |
JP2021165205A (en) | 2021-10-14 |
EP3418231A1 (en) | 2018-12-26 |
CN109095274B (en) | 2021-11-30 |
JP7176052B2 (en) | 2022-11-21 |
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