CN113911831A

CN113911831A - Yarn winding machine

Info

Publication number: CN113911831A
Application number: CN202111185018.XA
Authority: CN
Inventors: 杉山研志; 桥本欣三
Original assignee: TMT Machinery Inc
Current assignee: TMT Machinery Inc
Priority date: 2017-06-21
Filing date: 2018-06-01
Publication date: 2022-01-11
Anticipated expiration: 2038-06-01
Also published as: CN109095274B; CN109095274A; CN113911831B; EP3418231A1; JP7176052B2; JP6935243B2; JP2019006527A; EP3418231B1; JP2021165205A

Abstract

The invention provides a yarn winding machine, which can improve the rigidity of a roller supporting component while inhibiting the enlargement of the device. The yarn winding machine (4) is provided with a bobbin holder (24), a traverse device (22), a contact roller (25) that applies contact pressure to a plurality of packages (P) formed by winding a plurality of yarns (Y) around a plurality of bobbins (B), respectively, and a roller support member (26) that rotatably supports the contact roller (25). The roller support member (26) has: an arm section (31) which rotatably supports at least both end sections in the front-rear direction of the contact roller (25) and which extends at least radially outward from the radially central section of the contact roller (25); and a rigidity increasing section (32) which fixes the arm sections (31) at both ends and is provided in a region that does not overlap the bobbin holder (24) and the traverse device (22) when viewed from the front-rear direction. The rigidity-increasing section (32) has a portion that is longer than the arm section (31) in the direction perpendicular to the direction in which the arm section (31) extends when viewed from the front-rear direction.

Description

Yarn winding machine

The present application is a divisional application of an application having an application number of 201810557878.3, an application date of 2018, 6/1/h, and an invention name of "yarn winding machine".

Technical Field

The present invention relates to a yarn winding machine including a contact roller that applies contact pressure to a package.

Background

Patent document 1 discloses a yarn winding machine for winding a yarn. Specifically, the yarn winding machine includes: a bobbin holder extending in a front-rear direction and having a plurality of bobbins arranged thereon; a traverse device arranged above the bobbin holder and configured to traverse the plurality of yarns; and a contact roller arranged between the bobbin holder and the traverse device, and configured to apply a contact pressure to a package formed by winding the yarn around the plurality of bobbins. The contact roller extends in the front-rear direction and is rotatably supported by a roller support member. The roller support member includes two arm-shaped portions (hereinafter, referred to as support portions) that rotatably support both end portions of the contact roller in the front-rear direction and extend radially outward from the radially central portion of the contact roller. The two support portions are connected by a plate-shaped portion (hereinafter, referred to as a plate-shaped portion) extending in the front-rear direction. The plate-like portion is disposed so as to overlap the support portion and be sandwiched between the bobbin holder and the traverse device when viewed in the front-rear direction.

[ patent document 1 ] DE102006001041A1

When the bobbin holder is lengthened in the front-rear direction in order to increase the number of bobbins that can be mounted on the bobbin holder, the contact roller and the roller support member are lengthened in the front-rear direction along with this. This causes problems such as a reduction in bending rigidity of the roller support member in the front-rear direction and a tendency to vibrate due to the operation of the yarn winding machine. Therefore, in order to increase the rigidity of the roller support member, it is conceivable to increase the cross-sectional area of the plate-like portion orthogonal to the front-rear direction. However, as described above, the plate-like portion is disposed between the bobbin holder and the traverse device. Therefore, when the area of the cross section of the plate-like portion is to be increased, the bobbin holder and the traverse device must be moved to secure a space, which causes a problem that the yarn winding machine may be increased in size.

Disclosure of Invention

The invention aims to improve the rigidity of a roller supporting member while suppressing the size increase of a device.

A yarn winding machine according to a first aspect of the present invention includes: a bobbin holder extending in a predetermined longitudinal direction and having a plurality of bobbins, around which a plurality of yarns are wound, arranged and mounted in the longitudinal direction; a traverse device for traversing the plurality of yarns; a contact roller that extends in the longitudinal direction and applies contact pressure to a plurality of packages formed by winding the plurality of yarns traversed by the traverse device around the plurality of bobbins, respectively; and a roller support member that rotatably supports the contact roller, the roller support member including: a support portion that rotatably supports at least both end portions of the contact roller in the longitudinal direction and extends from a radial center of the contact roller at least outward in the radial direction; and a rigidity increasing section having a shape extending in the longitudinal direction, fixing the support section, and being provided in a region that does not overlap with the bobbin holder and the traverse device when viewed in the longitudinal direction, wherein the rigidity increasing section has a portion having a larger size than the support section in a direction orthogonal to the direction in which the support section extends when viewed in the longitudinal direction.

The contact roller is arranged in the vicinity of the bobbin holder and the traverse device, and is used to apply a contact pressure to a package formed by winding the traversed yarn around the bobbin. That is, the support portions that support both ends of the contact roller in the longitudinal direction are also disposed in the vicinity of the bobbin holder and the traverse device. In the present invention, the rigidity increasing section is provided with a fixed support section and is not overlapped with the bobbin holder and the traverse device when viewed from the longitudinal direction. The rigidity increasing portion has a portion larger in size than the support portion in a direction orthogonal to a direction in which the support portion extends when viewed from the longitudinal direction. Such a rigidity increasing portion increases the bending rigidity of the roller support member in the longitudinal direction. Therefore, the bending rigidity of the roller support member can be improved while avoiding interference with the bobbin holder and the traverse device. This can improve the rigidity of the roller support member while suppressing an increase in size of the apparatus.

In the yarn winding machine according to the second aspect of the invention, in the first aspect of the invention, the rigidity-improving portion is provided in a region where at least a part of the rigidity-improving portion does not overlap the support portion when viewed from the longitudinal direction.

When the rigidity increasing portion is disposed in a region overlapping the support portion as viewed in the longitudinal direction, the portion is disposed at a position sandwiched between the contact roller and the traverse device, and therefore it is difficult to increase the cross-sectional area orthogonal to the longitudinal direction. In the present invention, the cross-sectional area can be increased at a portion of the rigidity increasing portion that does not overlap with the support portion when viewed in the longitudinal direction, and the rigidity of the roller support member can be further increased.

A third aspect of the invention provides the yarn winding machine according to the first or second aspect of the invention, wherein the support portion has a shape extending in a bar-like or plate-like shape in the radial direction.

In the present invention, a space is formed in a region surrounded by the contact roller, the support portion, and the rigidity increasing portion. Even if the support portion has a shape extending in a bar-like or plate-like shape in the radial direction, the rigidity of the roller support member can be improved by the rigidity-improving portion, and therefore, the rigidity of the roller support member can be improved and other members can be arranged in the space, and the structure of the apparatus can be made compact.

A fourth aspect of the present invention is the yarn winding machine according to any one of the first to third aspects of the present invention, wherein a frame body that extends in the longitudinal direction and supports the roller support member is provided, and a cross section of at least a part of the rigidity increasing portion in the longitudinal direction, the cross section being orthogonal to the longitudinal direction, has a shape that at least partially surrounds the cross section of the frame body that is orthogonal to the longitudinal direction.

The rigidity of the roller support member is improved as the area of the cross section orthogonal to the longitudinal direction of the rigidity-improving section is increased. However, if the area of the cross section is simply increased, the rigidity-improving section may interfere with other members, and the device may have to be increased in size. In the present invention, at least a part of the rigidity increasing portion has a shape in which a cross section orthogonal to the longitudinal direction at least partially surrounds the frame. In other words, the rigidity increasing portion shares a part of the space in which the housing is disposed with the housing. This makes it possible to increase the area of the cross section while suppressing an increase in size of the apparatus.

A fifth invention is the yarn winding machine according to the fourth invention, wherein a cross section orthogonal to the longitudinal direction of at least a part of the rigidity increasing section in the longitudinal direction has a shape completely surrounding a cross section orthogonal to the longitudinal direction of the frame.

In the present invention, at least a part of the rigidity increasing section has a shape that completely surrounds the frame in a cross section orthogonal to the longitudinal direction, and the rigidity of the rigidity increasing section is thereby significantly increased. This can significantly improve the rigidity of the roller support member while suppressing an increase in size of the apparatus.

In the yarn winding machine according to a sixth aspect of the invention, in the fifth aspect of the invention, the rigidity-enhanced portion has a tubular shape extending in the longitudinal direction.

In the present invention, the rigidity increasing section has a cylindrical shape extending in the longitudinal direction, and the frame is completely surrounded by a cross section orthogonal to the longitudinal direction in the entire rigidity increasing section. This can further improve the rigidity of the roller support member.

A seventh aspect of the invention provides the yarn winding machine of any one of the fourth to sixth aspects, wherein the roller support member is supported by the frame so as to be swingable about a swing axis extending along the longitudinal direction.

In the present invention, the roller support member is supported to be swingable. That is, the roller support member and the contact roller do not move as a whole. This eliminates the need to secure a space for moving the roller support member and the like, and to provide a guide member for guiding the roller support member and the like, and thus can suppress an increase in size of the apparatus.

In the yarn winding machine according to the eighth aspect of the invention, in the seventh aspect of the invention, the frame body has a polygonal shape when viewed from the longitudinal direction, the swing shaft is provided at a fixed portion, and the fixed portion is fixed to a surface other than a surface closest to the contact roller among surfaces forming the outer peripheral surface of the frame body when viewed from the longitudinal direction.

In the configuration in which at least a part of the rigidity increasing portion at least partially surrounds the housing and the roller support member is swingably supported by the housing, when the swing angle of the roller support member is large, the rigidity increasing portion and the housing may easily interfere with each other. In the present invention, the swing shaft is provided at a fixing portion fixed to a surface other than a surface closest to the contact roller among surfaces of the housing. Therefore, the distance between the swing shaft and the rotation shaft of the contact roller can be increased by arranging the swing shaft, and therefore, the swing width of the contact roller can be maintained large even if the swing angle of the roller support member is small. Further, since the swing angle of the roller support member when the contact roller swings is reduced, interference between the rigidity increasing portion and the housing can be avoided.

In the yarn winding machine according to a ninth aspect of the present invention, in the seventh aspect of the present invention, the housing has an upper surface, and the swing shaft is provided at a fixing portion fixed to the upper surface.

In the present invention, the swing shaft is provided at a fixing portion fixed to the upper surface of the housing. That is, a downward force acting on the housing due to the weight of the roller support member is received by the upper surface, and therefore, a stable structure can be achieved.

In the yarn winding machine according to the tenth aspect of the invention, in any one of the seventh to ninth aspects of the invention, the frame body has a rectangular shape when viewed from the longitudinal direction.

According to the present invention, since the frame body has a quadrangular prism shape, processing at the time of manufacturing can be easily performed.

Drawings

Fig. 1 is a side view of a draft device including a yarn winding machine according to the present embodiment.

Fig. 2 is a front view of the yarn winding machine.

Fig. 3 is a perspective view of the front side portion of the roller support member and the periphery thereof.

Fig. 4 is a plan view of the roller support member and its periphery.

Fig. 5(a) is a sectional view of v (a) -v (a) of fig. 4, and fig. 5(b) is a sectional view of v (b) -v (b) of fig. 4.

Fig. 6 is an explanatory diagram illustrating the swing of the contact roller.

Fig. 7 is a perspective view of a front portion of a roller support member according to a modification and its periphery.

Fig. 8 is a perspective view of a front portion of a roller support member and its periphery according to another modification.

Fig. 9 is a sectional view of a roller support member and its periphery according to another modification.

Description of the symbols

4 yarn winding machine

20 machine body

22 traversing gear

24 bobbin bracket

25 contact roller

26 roller support member

27 frame body

31 arm part (support)

32 rigidity-improving part

43 upper surface of

44 fixed part

45 oscillating shaft

46 rotating shaft

Bobbin B

P package

Y yarn

Detailed Description

Next, an embodiment of the present invention will be described with reference to fig. 1 to 6.

(schematic configuration of traction device)

Fig. 1 is a side view of a draft device 1 including a yarn winding machine 4 (details will be described later) according to the present embodiment. Hereinafter, the left-right direction of the drawing sheet of fig. 1 is referred to as the front-rear direction (longitudinal direction of the present invention). The direction in which gravity acts is referred to as the vertical direction, and the direction perpendicular to the front-back direction and the vertical direction (the direction perpendicular to the paper surface) is referred to as the horizontal direction.

The traction device 1 includes: a first yarn guide roller 11, a second yarn guide roller 12, a yarn restricting carrier 16 for drafting a yarn Y spun from the spinning device 3; and a yarn winding machine 4 for winding the drafted yarn Y around the bobbins B to form a package P.

The first yarn guide roller 11 is a roller whose axial direction is substantially parallel to the left-right direction, and is disposed above the front end of the yarn winding machine 4. The first yarn guide roller 11 is rotationally driven by a motor not shown. The second yarn guide roller 12 is a roller whose axial direction is substantially parallel to the left-right direction, and is arranged above and behind the first yarn guide roller 11. The second yarn guide roller 12 is rotationally driven by a motor not shown.

The second yarn guide roller 12 is movably supported by a guide rail 14. The guide rail 14 extends obliquely upward and rearward. The second yarn guide roller 12 is configured to be movable along the guide rail 14 by a not-shown pulley pair, belt, drive motor, and the like. Thus, the second yarn guide roller 12 can move between a position at the time of winding the yarn Y and a position at the time of threading operation arranged close to the first yarn guide roller 11. In fig. 1, the position of the second yarn guide roller 12 when winding the yarn Y is indicated by a solid line, and the position of the second yarn guide roller 12 when performing a yarn threading operation is indicated by a one-dot chain line.

The yarn restricting carrier 16 is disposed above the first yarn guide roller 11. The yarn regulating guide 16 is, for example, a known comb-shaped guide for defining a predetermined distance between adjacent yarns Y when a plurality of yarns Y are hung.

(yarn winding machine)

Next, the yarn winding machine 4 will be described with reference to fig. 1 and 2. Fig. 2 is a front view of the yarn winding machine 4. The yarn winding machine 4 includes a machine body 20, a plurality of oscillation fulcrum guides 21, a traverse device 22, a turn table 23, two bobbin holders 24, a contact roller 25, a roller support member 26, a frame 27, and the like.

The body 20 is a member vertically disposed at the rear of the yarn winding machine 4. The body 20 supports a turntable 23, a frame 27, and the like.

The plurality of oscillation fulcrum guides 21 are provided independently of the plurality of yarns Y, and are arranged in the front-rear direction. The plurality of oscillation fulcrum guides 21 are configured to be supported by the plurality of yarns Y, and thereby serve as fulcrums at which the plurality of yarns Y traverse.

The traverse device 22 is used to traverse each of the plurality of yarns Y. The traverse device 22 is attached to a rib 41 described later and is disposed above the contact roller 25. The traverse device 22 has a plurality of traverse guides 28. The plurality of traverse guides 28 are provided independently of the plurality of yarns Y, and are arranged in the front-rear direction. Each traverse guide 28 is driven by a traverse motor (not shown) and reciprocates in the front-rear direction. Each yarn Y is traversed by each traverse guide 28 with each oscillation fulcrum guide 21 as a fulcrum.

The turntable 23 is a disk-shaped member whose axial direction is substantially parallel to the front-rear direction, and is rotatably supported by the body 20. The turntable 23 is rotationally driven by a turntable motor not shown. The turn table 23 cantileverly supports the two bobbin holders 24 and turns around a turning shaft substantially parallel to the front-rear direction, thereby moving the two bobbin holders 24. Thus, in the yarn winding machine 4, the positions of the two bobbin holders 24 can be replaced, and while the bobbin B attached to one bobbin holder 24 is wound with the yarn Y, the bobbin B can be replaced with respect to the other bobbin holder 24. The turn table 23 is configured to be rotatable as the amount of the yarn Y wound increases when the yarn is wound around the bobbin B (see the solid arrow in fig. 2).

The two bobbin holders 24 are used to mount a plurality of bobbins B, respectively. The two bobbin holders 24 are rotatably supported at the upper end portion and the lower end portion of the turn table 23 supported by the machine body 20, respectively, and extend forward from the turn table 23. In other words, the two bobbin holders 24 are cantilevered by the body 20 disposed on the rear side. The axial direction of the two bobbin holders 24 is substantially parallel to the front-rear direction.

A plurality of bobbins B provided independently from the plurality of yarns Y are mounted in a line in the front-rear direction on each bobbin holder 24. The number of bobbins B mounted on one bobbin support 24 is, for example, 16. The two bobbin holders 24 are each rotationally driven by an independent winding motor (not shown).

The contact roller 25 is a roller whose axial direction is substantially parallel to the front-rear direction, and is disposed above the upper bobbin holder 24 and below the traverse device 22. The contact roller 25 is in contact with the surfaces of the plurality of packages P supported by the upper bobbin holder 24, thereby applying a contact pressure to the surfaces of the plurality of packages P being wound, and thus combing the shape of each package P. In the present embodiment, the contact roller 25 is a so-called swing arm type contact roller that is swingably supported by the frame 27 via a roller support member 26 as will be described later.

The roller support member 26 is a member for rotatably supporting the contact roller 25. The roller support member 26 extends in the front-rear direction. Details of the roller support member 26 will be described later.

The frame 27 is a columnar member extending in the front-rear direction and is fixed to the upper portion of the machine body 20. The roller support member 26 is swingably supported by the frame 27. The details of the housing 27 will be described later.

In the yarn winding machine 4 having the above-described configuration, when the upper bobbin holder 24 is rotationally driven, the yarn Y traversed by the traverse guide 28 is wound around the bobbin B to form the package P. While the package P is being formed, the contact roller 25 is in contact with the surface of the package P to apply a contact pressure, whereby the shape of the package P is combed. Further, as the yarn Y is wound around the bobbin B, the diameter of the package P increases (the package P is wound more thickly), and the turn table 23 rotates in the direction of the solid arrow in fig. 2. This increases the distance between the bobbin holder 24 to which the bobbin B around which the yarn Y is wound is attached and the contact roller 25. The contact roller 25 is swingably supported by the frame 27, and therefore swings in accordance with the movement of the bobbin holder 24 and the package P (see the broken-line arrow in fig. 2). Thereby, the contact between the contact roller 25 and the package P is maintained.

Here, in recent years, from the viewpoint of production efficiency, the number of bobbins B to be mounted on the bobbin holder 24 at a time is increased, and thus the bobbin holder 24 tends to be elongated in the front-rear direction. Accordingly, the contact roller 25 and the roller support member 26 are also elongated in the front-rear direction. As a result, the bending rigidity of the roller support member 26 becomes small, and the roller support member 26 is likely to vibrate due to the operation of the yarn winding machine 4. Therefore, in order to increase the bending rigidity and the like of the roller support member 26, it is conceivable to increase the area of the cross section of the roller support member 26 orthogonal to the front-rear direction. However, if the area of the cross section is directly increased, the bobbin holder 24 and the traverse device 22 must be moved to secure a space, and the yarn winding machine 4 is increased in size. Therefore, in the present embodiment, the roller support member 26 and the frame 27 have the following configurations.

(detailed construction of roller support Member and frame)

The detailed structure of the roller support member 26 and the frame 27 will be described with reference to fig. 3 to 6. Fig. 3 is a perspective view of the front side portion of the roller support member 26 and its periphery. Fig. 4 is a plan view of the roller support member 26 and its periphery. FIG. 5(a) is a sectional view of V (a) -V (a) of FIG. 4. FIG. 5(b) is a sectional view of V (b) -V (b) of FIG. 4. Fig. 6 is an explanatory diagram illustrating the swing of the contact roller 25.

First, the frame 27 will be explained. The frame 27 is a hollow quadrangular prism member having a substantially rectangular shape when viewed from the front-rear direction and extending in the front-rear direction. The outer peripheral portion of the frame 27 has a dimension of, for example, about 150mm square when viewed from the front-rear direction. The housing 27 has an upper surface 43 (see fig. 5), and fixing portions 44 for providing a swing shaft 45 described later are fixed to the upper surface 43 in the vicinity of both ends in the front-rear direction.

Next, the roller support member 26 will be explained. As described above, the roller support member 26 is for rotatably supporting the contact roller 25. As shown in fig. 3 to 5, the roller support member 26 includes an arm portion 31 (a support portion of the present invention) and a rigidity increasing portion 32.

The arm portions 31 (

arm portions

31F and 31R) support both ends of the contact roller 25 in the front-rear direction. The

arm portions

31F and 31R are plate-like members having shapes extending obliquely upward to the left (outward in the radial direction) from the center portion in the radial direction of the contact roller 25. The arm 31F rotatably supports the front end of the contact roller 25, and the arm 31R rotatably supports the rear end of the contact roller 25. Thereby, the contact roller 25 can rotate about the rotation shaft 46 (see fig. 5). The

arm portions

31F and 31R have a width that increases from the center portion in the radial direction of the contact roller 25 toward the radially outer side when viewed from the front-rear direction (see fig. 5). As will be described later, the

arm portions

31F and 31R are fixed to the rigidity increasing portion 32.

The rigidity increasing portion 32 increases the bending rigidity of the roller support member 26. The rigidity increasing portion 32 is a member having a substantially cylindrical shape (see fig. 3) extending in the front-rear direction. In the present embodiment, the rigidity increasing portion 32 is formed of a member different from the two arm portions 31. As shown in fig. 5, the rigidity increasing portion 32 has a hollow substantially rectangular shape when viewed from the front-rear direction, and the size of the outer peripheral portion thereof is, for example, approximately 230mm square. Further, the outer peripheral portion of the rigidity-enhanced portion 32 has a thickness of, for example, about 20 mm. That is, the size of the hollow region of the rigidity increasing portion 32 is about 190mm square and larger than the size of the frame 27 (about 150mm square). In this way, the rigidity increasing portion 32 has a shape in which a cross section orthogonal to the front-rear direction completely surrounds a cross section orthogonal to the front-rear direction of the frame 27 in the entire structure.

A rib 41 projecting obliquely downward to the right is formed on the lower portion of the right side surface portion of the rigidity increasing portion 32 over the entire length of the rigidity increasing portion 32 in the front-rear direction. The rib 41 is used for carrying the traverse device 22.

A radially outer portion of the arm portion 31F is fixed to a distal end portion of the right side surface portion of the rigidity increasing portion 32 by a plurality of fixing tools 42 (see fig. 3 and 5 a). Similarly, a radially outer portion of the arm portion 31R is fixed to a rear end portion of the right side surface portion of the rigidity increasing portion 32. Thus, the two

arm portions

31F and 31R are fixed to the respective front and rear end portions of the rigidity increasing portion 32.

The rigidity increasing portion 32 is disposed at a position surrounding the frame 27 when viewed from the front-rear direction. In other words, the frame 27 is accommodated inside the rigidity increasing portion 32 as viewed from the front-rear direction. The gap between the rigidity increasing portion 32 and the frame 27 is about 20 mm. The rigidity increasing section 32 is disposed diagonally above the bobbin holder 24 and to the left of the traverse device 22 (see fig. 5 a). As described above, the rigidity increasing section 32 is provided in a region not overlapping with the bobbin holder 24 and the traverse device 22 when viewed from the front-rear direction. That is, the rigidity increasing section 32 is disposed outside the region sandwiched between the bobbin holder 24 and the traverse device 22. The rigidity increasing portion 32 has a larger size in a direction (a direction orthogonal to fig. 5 b) orthogonal to a direction in which the arm portion 31 extends (an extending direction of fig. 5 b) than the arm portion 31 when viewed from the front-rear direction. Further, the rigidity increasing portion 32 does not overlap with the arm portion 31F and the arm portion 31R except for the mutually fixed portions when viewed from the front-rear direction. In other words, at least a part of the rigidity increasing portion 32 does not overlap the

arm portions

31F and 31R when viewed from the front-rear direction.

As shown in fig. 3 to 5, the rigidity increasing portion 32 is swingably supported by the frame 27. A swing shaft 45 extending in the front-rear direction is provided at the fixing portion 44 of the frame 27, and the rigidity increasing portion 32 (i.e., the entire roller support member 26) is supported by the frame 27 so as to be able to swing about the swing shaft 45. Thereby, the contact roller 25 is supported swingably via the roller support member 26. The rocking shaft 45 may be 2 shafts supporting both front and rear end portions of the

rigidity increasing portion

32, or 1 shaft extending across the entire length of the rigidity increasing portion 32 in the front-rear direction.

In the roller support member 26 having the above configuration, the rigidity increasing section 32 is provided in a region that does not overlap with the bobbin holder 24 and the traverse device 22 when viewed from the front-rear direction. Therefore, the roller support member 26 can avoid interference with the bobbin holder 24 and the traverse device 22, and the rigidity increasing section 32 can increase the bending rigidity and the like. Further, as described above, since rigidity increasing portion 32 has a cross-sectional shape that completely surrounds frame 27, it shares a part of the space in which frame 27 is disposed with frame 27, and has high rigidity.

Further, the

arm portions

31F and 31R are fixed to the front and rear end portions of the rigidity increasing portion 32, respectively, so that a space is formed in a region surrounded by the contact roller 25, the

arm portions

31F and 31R, and the rigidity increasing portion 32. The traverse device 22 is attached to the rib 41 by using a part of the space (see fig. 3 and 5 (a)).

Further, a fixing portion 44 provided with a swing shaft 45 is fixed to the upper surface 43. Therefore, a downward force acting on the frame 27 by the weight of the roller support member 26 is stably received by the upper surface 43. As described below, the contact roller 25 has a large oscillation width, and interference between the roller support member 26 and the frame 27 is less likely to occur. That is, if the fixing portion 44 is fixed to the right side surface closest to the contact roller 25 among the surfaces forming the outer peripheral surface of the housing 27 as shown in fig. 6(a), the distance between the swing shaft 45 and the rotation shaft 46 of the contact roller 25 becomes smaller as viewed from the front-rear direction. Therefore, when the contact roller 25 swings, the swing angle of the roller support member 26 increases, and there is a possibility that the rigidity increasing portion 32 surrounding the frame 27 and the frame 27 easily interfere with each other (see the two-dot chain line in fig. 6 (a)). In this regard, in the present embodiment, as shown in fig. 6(b), the fixing portion 44 is fixed to the upper surface 43, which is a surface other than the right side surface, and therefore the distance is relatively large. Thereby, the swing width of the contact roller 25 with respect to the swing angle of the roller support member 26 is increased (see the two-dot chain line in fig. 6 (b)). Further, since the swing angle of the roller support member 26 when the contact roller 25 swings is small, the rigidity increasing portion 32 and the frame 27 are less likely to interfere with each other.

As described above, the rigidity increasing portion 32 is fixed to the radially outer portion of the arm portion 31 and is provided in a region that does not overlap with the bobbin holder 24 and the traverse device 22 when viewed from the front-rear direction. The rigidity increasing portion 32 has a larger size than the arm portion 31 in a direction perpendicular to the direction in which the arm portion 31 extends when viewed from the front-rear direction. The rigidity increasing portion 32 increases the bending rigidity of the roller support member 26 in the front-rear direction. Therefore, the bending rigidity and the like of the roller support member 26 can be improved while avoiding interference with the bobbin holder 24 and the traverse device 22. This can improve the rigidity of the roller support member 26 while suppressing an increase in size of the yarn winding machine 4.

At least a part of the rigidity increasing portion 32 is provided in a region not overlapping with the

arm portions

31F and 31R when viewed from the front-rear direction. In the portion provided in the above-described region, the cross-sectional area of the rigidity increasing portion 32 perpendicular to the front-rear direction can be increased, and the rigidity of the roller support member 26 can be further increased.

Further, a space is formed in a region surrounded by the contact roller 25, the

arm portions

31F, 31R, and the rigidity increasing portion 32. Even if the

arm portions

31F and 31R have a plate-like shape extending in the radial direction, the rigidity of the roller support member 26 can be increased by the rigidity increasing portion 32, and therefore, the rigidity of the roller support member 26 can be increased, and other members such as the traverse device 22 can be disposed in the space, and the structure of the yarn winding machine 4 can be made compact.

The rigidity increasing portion 32 has a cylindrical shape extending in the front-rear direction, and a cross section orthogonal to the front-rear direction completely surrounds the frame body in the entire rigidity increasing portion 32. In this way, rigidity increasing portion 32 shares a part of the space in which frame 27 is disposed with frame 27, and has high rigidity. This can significantly improve the rigidity of the roller support member 26 while suppressing an increase in size of the apparatus.

Further, the roller support member 26 is supported to be swingable. That is, the roller support member 26 and the contact roller 25 do not move as a whole. This eliminates the need to secure a space for moving the roller support member 26 and the like, and the need to provide a guide member for guiding the roller support member 26 and the like, and thus can suppress an increase in size of the apparatus.

The swing shaft 45 is provided to the fixing portion 44, and the fixing portion 44 is fixed to a surface (the upper surface 43 in the present embodiment) other than the surface closest to the contact roller 25 among the surfaces of the housing 27. Therefore, the swing shaft 45 can be disposed so that the distance between the swing shaft 45 and the rotation shaft 46 of the contact roller 25 is increased, and therefore, the swing width of the contact roller 25 can be maintained large even if the swing angle of the roller support member 26 is small. Further, since the swing angle of the roller support member 26 when the contact roller 25 swings is reduced, interference between the rigidity increasing portion 32 and the frame 27 can be avoided.

The swing shaft 45 is provided to a fixing portion 44 fixed to the upper surface 43 of the housing 27. That is, a downward force acting on the frame 27 due to the weight of the roller support member 26 is received by the upper surface 43, and therefore, a stable structure can be achieved.

Further, since the frame 27 has a quadrangular prism shape, it is easy to process it at the time of manufacturing.

Next, a modification of the above embodiment will be described. Note that the same reference numerals are given to members having the same configurations as those of the above-described embodiments, and the description thereof will be appropriately omitted.

(1) In the above embodiment, the frame 27 is completely surrounded by the cross section orthogonal to the front-rear direction in the entire rigidity increasing portion 32, but the present invention is not limited thereto. For example, as shown in fig. 7, the frame 27 may be completely surrounded by the cross section of the rigidity increasing portion 32a only in a part thereof by forming an opening 47 in the upper surface portion of the rigidity increasing portion 32a of the roller support member 26 a. In this way, the rigidity of the rigidity increasing portion 32a is greatly increased by the shape in which the cross section having at least a part of the rigidity increasing portion 32a (e.g., the distal end portion in fig. 6) completely surrounds the frame 27. This can significantly improve the rigidity of the roller support member 26 a.

Further, by forming the opening 47 appropriately, it is possible to reduce the weight while keeping the rigidity of the roller support member 26a high, and it is possible to increase the resonance frequency of the roller support member 26a, thereby making the roller support member 26a less likely to vibrate.

(2) For example, as shown in fig. 8, the rigidity increasing portion 32b of the roller support member 26b may be configured to partially surround only the frame 27 without having a lower surface portion (i.e., the above-described inverted U-shaped cross section) or the like. Further, the rigidity increasing portion 32b may have a shape partially surrounding the frame 27 only in a part in the front-rear direction. In other words, the cross section of at least a part of the rigidity increasing portion 32 in the front-rear direction may have a shape at least partially surrounding the frame 27. In this case, the rigidity increasing portion 32b shares a part of the space in which the housing 27 is disposed with the housing 27, and the area of the cross section can be increased while suppressing an increase in size of the apparatus. In this modification, the rigidity increasing portion 32b does not have a lower surface portion, but may have a configuration without a left surface portion, for example.

(3) The shape of the rigidity increasing portion is not limited to the above. For example, as shown in fig. 9(a), the rigidity increasing portion 32c of the roller support member 26c may have an annular cross section. Alternatively, for example, as shown in fig. 9(b), the rigidity increasing portion 32d of the roller support member 26d may have a solid rectangular cross section without surrounding the frame 27. That is, the rigidity increasing section may be disposed at a position not overlapping the traverse device 22 and the bobbin holder 24 when viewed from the front-rear direction. In this case, as shown in fig. 9(b), the fixing portion 44 may be fixed to the right side surface of the frame 27, that is, the surface closest to the contact roller 25 when viewed from the front-rear direction. The

rigidity increasing portions

32c and 32d may not have the rib 41.

(4) The position of the fixing portion 44 is not limited to the above. That is, the fixing portion 44 may be fixed to the lower surface, the left side surface, or the like of the frame 27.

(5) In the above-described embodiment, the two arm portions 31 extending in a plate shape in the radial direction of the contact roller 25 are support portions that rotatably support the contact roller 25, but the present invention is not limited to this. The two arm portions may extend in a rod shape in the radial direction, for example. Alternatively, for example, the two arm portions 31 may be connected by a plate-shaped portion (not shown) extending in the front-rear direction. In this case, the combination of the two arm portions 31 and the plate-shaped portion corresponds to the support portion of the present invention. That is, the support portion may extend in a direction other than the radial direction of the contact roller 25. The two arm portions 31 may be separate members from the plate-like portion, or may be integrally formed.

In the above-described embodiment, the arm portions 31 rotatably support both end portions in the front-rear direction of the contact roller 25, but the present invention is not limited thereto. The contact roller may be provided with arm portions that support not only both end portions but also a central portion of the contact roller.

(6) In the above-described embodiment, the rigidity increasing portion 32 and the arm portion 31 are separate members, but these may be integrally formed.

(7) The frame 27 does not necessarily have a hollow substantially rectangular shape when viewed from the front-rear direction, but may have a hollow polygonal shape. For example, the shape may be a solid circle. That is, the frame does not necessarily have an upper surface.

(8) In the above-described embodiment, the contact roller 25 is disposed above the bobbin holder 24 and below the traverse device 22, but is not limited thereto. For example, the contact roller 25 may have another positional relationship such as being disposed on the side of the bobbin holder 24.

(9) In the above-described embodiment, the rigidity increasing section 32 is disposed diagonally above the bobbin holder 24 and to the left of the traverse device 22, but is not limited thereto. For example, the present invention may be applied to a yarn winding machine configured to be bilaterally symmetric to the yarn winding machine 4. That is, the rigidity increasing section 32 may be disposed diagonally above the bobbin holder 24 and to the right of the traverse device 22.

(10) In the modification (9) above, the present invention may be applied to two yarn winding machines that are arranged in the left-right direction and are configured to be symmetrical with each other. Alternatively, the present invention may be applied to an integrated yarn winding machine including two turntables, 2 sets of bobbin holders, two contact rollers, and the like, which are configured to be bilaterally symmetrical to each other, as disclosed in japanese patent application laid-open No. 2003-238031.

(11) In the above-described embodiment, the contact roller 25 is supported to be swingable by the frame 27, but the present invention is not limited thereto. For example, the present invention may be applied to a yarn winding machine including a so-called direct-acting type moving mechanism in which a support member supporting the contact roller 25 moves up and down while maintaining its posture (see, for example, japanese patent application laid-open No. 2012-158436). Alternatively, the roller support member 26 is not necessarily supported by the frame 27, and may be configured to be directly attached to the machine body 20, for example.

Claims

1. A yarn winding machine is characterized by comprising:

a bobbin holder extending in a predetermined longitudinal direction and having a plurality of bobbins, around which a plurality of yarns are wound, arranged and mounted in the longitudinal direction;

a traverse device for traversing the plurality of yarns;

a contact roller that extends in the longitudinal direction and applies contact pressure to a plurality of packages formed by winding the plurality of yarns traversed by the traverse device around the plurality of bobbins, respectively; and

a roller support member for rotatably supporting the contact roller,

the roller support member includes:

a support portion that rotatably supports at least both end portions of the contact roller in the longitudinal direction and extends from a radial center of the contact roller at least outward in the radial direction; and

a rigidity increasing section having a shape extending in the longitudinal direction, fixing the support section, and being provided in a region not overlapping with the bobbin holder and the traverse device when viewed from the longitudinal direction,

the support portion extends in at least one direction from a center position in a radial direction of the contact roller toward the rigidity increasing portion when viewed from the longitudinal direction, and when any one of the at least one direction is taken as an extending direction,

the rigidity increasing portion has a portion whose length in a direction orthogonal to the extending direction is longer than the length of the support portion in the orthogonal direction when viewed from the longitudinal direction;

the yarn winding machine further includes a frame body extending in the longitudinal direction and supporting the roller support member,

a cross section orthogonal to the longitudinal direction of at least a part of the rigidity increasing portion in the longitudinal direction has a shape at least partially surrounding a cross section orthogonal to the longitudinal direction of the frame.

2. A yarn winding machine is characterized by comprising:

a traverse device for traversing the plurality of yarns;

a roller support member for rotatably supporting the contact roller,

the roller support member includes:

3. The yarn winding machine as claimed in claim 1 or 2,

the rigidity-enhancing portion is provided in a region where at least a part of the rigidity-enhancing portion does not overlap the support portion when viewed in the longitudinal direction.

4. The yarn winding machine according to any one of claims 1 to 3,

the support portion has a shape extending in the radial direction in a bar shape or a plate shape.

5. The yarn winding machine according to any one of claims 1 to 4,

at least a part of the rigidity increasing portion has a cross section orthogonal to the longitudinal direction, the cross section being a shape completely surrounding a cross section orthogonal to the longitudinal direction of the frame.

6. The yarn winding machine as claimed in claim 5,

the rigidity increasing portion has a cylindrical shape extending in the longitudinal direction.

7. The yarn winding machine according to any one of claims 1 to 6,

the roller support member is supported by the frame so as to be swingable about a swing axis extending in the longitudinal direction.

8. The yarn winding machine as claimed in claim 7,

the frame body is polygonal when viewed from the longitudinal direction,

the swing shaft is arranged on the fixed part,

the fixing portion is fixed to a surface other than a surface closest to the contact roller among surfaces forming the outer peripheral surface of the housing when viewed from the longitudinal direction.

9. The yarn winding machine as claimed in claim 7,

the frame body is provided with an upper surface,

the swing shaft is provided at a fixing portion fixed to the upper surface.

10. The yarn winding machine according to any one of claims 7 to 9,

the frame body is rectangular when viewed from the longitudinal direction.