Yarn winding machine

Abstract

To effectively suppress the air resistance applied to an end face of a package during winding of a yarn and improve the reduction effects of consumption power.SOLUTION: A yarn winding machine comprises a contact roller 25 that abuts against outer peripheral surfaces of a plurality of packages P formed by a plurality of yarns Y respectively wound on a plurality of bobbins B and a plurality of end face-to-end face covers 40 that are respectively arranged in a plurality of spaces formed between end faces of the packages mutually adjacent in a front-rear direction. The end face-to-end face cover, as viewed in the front-rear direction, has a contact-roller face 41 facing the contact roller. The contact-roller face is arranged closer to a center Q of the package than the outer peripheral surface of the package in a radial direction of the package. As viewed in the front-rear direction, at least one part of the contact-roller face is provided fallen within an angle range of from upstream 30 degrees to downstream 30 degrees in a rotating direction of the package with reference to a virtual line segment V connecting between a point of contact C and a center of the package P.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a yarn winder for winding yarns.

Background Art

[0002] Patent Document 1 discloses a yarn winder for winding yarns. The yarn winder includes a bobbin holder extending in a predetermined axial direction and a contact roller extending parallel to the bobbin holder. A plurality of cylindrical bobbins around which a plurality of yarns are respectively wound are arranged side by side in the axial direction on the bobbin holder. The contact roller applies contact pressure to each package by contacting the outer peripheral surfaces of a plurality of cylindrical packages formed by winding a plurality of yarns around a plurality of bobbins. The yarn winder forms a package by winding yarn around the bobbins mounted on the bobbin holder by rotating the bobbin holder. In such a yarn winder, there is a problem that the rotating load of the bobbin holder is increased due to the air resistance received by the package rotating together with the bobbin holder, and consequently the power consumption of the yarn winder is increased.

[0003] Therefore, in the yarn winder of Patent Document 1, a cover (the first cover portion described in Patent Document 1) is provided along the outer peripheral surface of the package in order to suppress the air resistance applied to the package. By providing the cover, the air flowing along the outer peripheral surface of the package (hereinafter referred to as the outer peripheral surface accompanying flow) is guided to the inner surface of the cover, and the separation of air from the outer peripheral surface of the package is suppressed. Then, a decrease in the air density in the region along the outer peripheral surface of the package (hereinafter referred to as the outer peripheral surface region) is suppressed, and the flow of air from the space around the package into the outer peripheral surface region is suppressed. Thereby, suppression of power consumption is achieved by suppressing the air resistance applied to the outer peripheral surface of the package.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, for a plurality of packages mounted on a bobbin holder, there is a gap between the end faces of the packages adjacent to each other in the axial direction (that is, the circular faces at both ends of the cylindrical package). The end faces of each package are subject to air resistance due to the air present in the gap between the end faces of the adjacent packages (hereinafter referred to as the gap between package end faces). That is, the air resistance applied to the package includes not only the air resistance applied to the outer peripheral surface of the package but also the air resistance applied to the end faces of the package. However, in the winding machine of Patent Document 1, the air resistance applied to the end faces of each package cannot be sufficiently suppressed. This will be described in detail below.

[0006] In a winding machine as described in Patent Document 1, the outer peripheral surface of the package abuts against the contact controller, and the outer peripheral surface accompanying flow collides with the contact controller and is blocked. Then, in the region immediately downstream of the contact controller in the rotation direction of the package in the outer peripheral surface region, the density of the outer peripheral surface accompanying flow decreases by the amount of the blocked air. Then, air flows in from the periphery of the package into the region where the air density has decreased. And a part of the air flowing in from the periphery of the package flows into the gap between the package end faces, disturbing the flow of the air existing between the package end faces. As a result, the air existing between the package end faces flows in a direction significantly different from the rotation direction of the end faces of the package. Thereby, the air resistance applied to the end faces of each package increases.

[0007] In addition, a part of the air blocked by the contact controller flows into the gap between the package end faces in the region immediately upstream of the contact controller in the rotation direction of the package in the outer peripheral surface region. Then, similarly to the above, the flow of the air existing between the package end faces is disturbed by the air flowing into the gap between the package end faces, and the air resistance applied to the end faces of each package increases.

[0008] As described above, in the winding machine described in Patent Document 1, the increase in air resistance on the end face of each package caused by the collision between the outer peripheral surface accompanying flow and the contact roller cannot be sufficiently suppressed. For this reason, with the configuration of Patent Document 1, there is a possibility that the power consumption of the winding machine cannot be effectively suppressed.

[0009] An object of the present invention is to effectively suppress the air resistance applied to the end face of the package during winding of the yarn and improve the effect of reducing power consumption.

Means for Solving the Problems

[0010] The winding machine of the present invention includes a bobbin holder in which a plurality of bobbins extending in a predetermined axial direction and around which a plurality of yarns are respectively wound are arranged side by side in the axial direction, and extends along the axial direction, and the plurality of yarns are wound around the plurality of bobbins respectively. A contact roller that contacts the outer peripheral surface of a plurality of packages formed, and an end-face cover disposed in at least one of a plurality of spaces formed between end faces of the packages adjacent to each other in the axial direction. The end-face cover has a contact roller surface facing the contact roller side when viewed from the axial direction, and at least a part of the contact roller surface is disposed closer to the center of the package than the outer peripheral surface of the package in the radial direction of the package when viewed from the axial direction. When viewed from the axial direction, at least a part of the contact roller surface is within a range from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package with respect to a virtual line segment connecting the contact point between the package and the contact roller and the center of the package. Angle It is characterized in that it is provided so as to fall within the range.

[0011] According to the present invention, at least a part of the contact controller surface of the end face cover disposed between the end faces of adjacent packages (hereinafter referred to as between the package end faces) is disposed closer to the center of the package than the outer peripheral surface of the package in the radial direction of the package. In other words, at least a part of the contact controller surface of the end face cover is In the radial direction of the package inside the outer peripheral surface of the package. Therefore, it is possible to suppress the air on the outer side in the radial direction of the package from entering inside the end face cover, and effectively suppress the inflow of air between the package end faces. In addition, at least a part of the contact controller surface is provided within a range from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package with reference to the virtual line segment. Angle In other words, the end face cover is provided near the contact point between the package and the contact controller. Therefore, it is possible to suppress the inflow of air between the package end faces in the vicinity of the contact point due to the collision between the air flowing along the outer peripheral surface of the package (hereinafter referred to as the outer peripheral surface accompanying flow) and the contact controller. Therefore, it is possible to suppress the disturbance of the air flow existing between the package end faces. Thereby, it is possible to effectively suppress the air resistance applied to the end face of the package, and thus improve the effect of reducing power consumption.

[0012] In the winding machine of the present invention, when viewed from the axial direction, it is preferable that at least a part of the end face cover is provided on the upstream side in the rotation direction of the package with respect to the virtual line segment.

[0013] According to the present invention, it is possible to suppress a part of the air blocked by the contact controller from flowing into the space between the package end faces in the region upstream of the contact point in the rotation direction of the package. Thereby, it is possible to suppress the disturbance of the air flow existing between the package end faces, and effectively suppress the air resistance applied to the end face of the package.

[0014] In the winding machine of the present invention, when viewed from the axial direction, it is preferable that at least a part of the cover between the end faces is provided on the downstream side in the rotational direction of the package with respect to the virtual line segment.

[0015] According to the present invention, in a region where the density of air is reduced by the peripheral surface accompanying flow colliding with the contact controller and being blocked, that is, in a region on the downstream side in the rotational direction of the package from the contact point, it is possible to suppress the inflow of air between the end faces of the package. Thereby, it is possible to suppress the disturbance of the air flow existing between the end faces of the package, and effectively suppress the air resistance applied to the end faces of the package.

[0016] In the winding machine of the present invention, when viewed from the axial direction, the cover between the end faces has a bobbin surface facing the center side of the package, and when viewed from the axial direction, it is preferable that the bobbin surface has a curved shape along the rotational direction of the package.

[0017] According to the present invention, the air existing between the end faces of the package flows along the bobbin surface of the cover between the end faces. Since the bobbin surface has a curved shape along the rotational direction of the package, the air flowing along the bobbin surface tends to flow in the same direction as the rotational direction of the end face of the package. Thereby, it is possible to suppress an increase in the air resistance received by the end faces of the package from the air flowing between the end faces of the package.

[0018] In the winding machine of the present invention, when viewed from the axial direction, The cover between the end faces is continuously provided over an angular range of 25 degrees or more in the rotational direction of the package. at least a part of the cover between the end faces is continuously provided in a range from 20 degrees upstream to 5 degrees downstream in the rotational direction of the package with respect to the virtual line segment. Angle It is preferable that

[0019] According to the present invention, it is possible to suppress the inflow of air between the end faces of the package in both a region immediately upstream and a region immediately downstream in the rotational direction of the package from the contact point.

[0020] Another configuration of the winding machine of the present invention includes a bobbin holder that extends in a predetermined axial direction and in which a plurality of bobbins around which a plurality of yarns are respectively wound are arranged side by side in the axial direction, a contact roller that extends along the axial direction and contacts the outer peripheral surfaces of a plurality of packages formed by winding the plurality of yarns around the plurality of bobbins, and an end-face cover disposed in at least one of a plurality of spaces formed between the end faces of the packages adjacent to each other in the axial direction. The end-face cover has a contact roller surface facing the contact roller side when viewed from the axial direction, and at least a part of the contact roller surface is disposed closer to the center of the package than the outer peripheral surface of the package in the radial direction of the package. The end-face cover is provided with a moving mechanism that moves the end-face cover between an end-face position where at least a part of the end-face cover is disposed in the space between the end faces of the adjacent packages and a retracted position that is located outside the end-face position in the radial direction of the package. The end-face position is closer to the contact point between the package and the contact roller than the retracted position in the circumferential direction of the package.

[0021] According to the present invention, at least a part of the cover between end faces located at the position between end faces is disposed between the end faces of adjacent packages (hereinafter referred to as between package end faces). And at least a part of the contact controller surface of the cover between end faces disposed between the package end faces is disposed closer to the center of the package than the outer peripheral surface of the package in the radial direction of the package. In other words, at least a part of the contact controller surface of the cover between end faces is inside the outer peripheral surface of the package in the radial direction of the package. Therefore, it is possible to suppress the air outside the package in the radial direction from entering inside the cover between end faces, and effectively suppress the air from flowing into between the package end faces. In addition, the position between end faces is closer to the contact point between the package and the contact controller than the retracted position in the circumferential direction of the package. In other words, the cover between end faces is provided in the vicinity of the contact point. Therefore, it is possible to suppress the air from flowing into between the package end faces in the vicinity of the contact point due to the collision between the air flowing along the outer peripheral surface of the package (hereinafter referred to as the outer peripheral surface accompanying flow) and the contact controller. Therefore, it is possible to suppress the flow of the air existing between the package end faces from being disturbed. Thereby, it is possible to effectively suppress the air resistance applied to the end faces of the package, and thus improve the effect of reducing power consumption.

[0022] In addition, according to the present invention, the following effects can be obtained. Immediately after the start of winding of the yarn, since the package diameter is very small, the contact controller and the bobbin are close to each other in the radial direction of the package. Therefore, depending on the positional relationship between the cover between end faces and the contact controller, there is a possibility that the cover between end faces may interfere with the bobbin immediately after the start of winding of the yarn. In this regard, according to the present invention, immediately after the start of winding of the yarn, by moving the cover between end faces to the retracted position, it is possible to surely avoid the cover between end faces from interfering with the bobbin. And as the winding of the yarn onto each bobbin proceeds and the diameter of the package increases and the distance between the contact controller and the bobbin becomes sufficiently large, the cover between end faces can be moved to the position between end faces. Thereby, while avoiding the cover between end faces from interfering with the bobbin, it is possible to suppress the air from flowing into between the package end faces.

[0023] The winding machine of the present invention preferably includes a moving mechanism that moves the cover between end faces between an end-face position where at least a part of the cover between end faces is disposed in a space between end faces of adjacent packages and a retracted position that is outside the packages in the radial direction from the end-face position.

[0024] Immediately after the start of winding of the yarn, since the package diameter is very small, the contact controller and the bobbin are close to each other in the radial direction of the package. For this reason, depending on the positional relationship between the cover between end faces and the contact controller, there is a risk that the cover between end faces may interfere with the bobbin immediately after the start of winding of the yarn. According to the present invention, immediately after the start of winding of the yarn, by moving the cover between end faces to the retracted position, it is possible to surely avoid the cover between end faces from interfering with the bobbin. Then, as the winding of the yarn onto each bobbin proceeds and the diameter of the package increases and the distance between the contact controller and the bobbin becomes sufficiently large, the cover between end faces can be moved to the end-face position. Thereby, while avoiding the cover between end faces from interfering with the bobbin, it is possible to suppress the inflow of air between the end faces of the package.

[0025] The winding machine of the present invention includes a sensor that detects information regarding the diameters of the plurality of packages and a control unit that controls the driving of the moving mechanism. The control unit calculates the diameters of the plurality of packages based on the information regarding the diameters of the plurality of packages, and preferably controls the moving mechanism so as to move the cover between end faces from the retracted position to the end-face position when the diameters of the plurality of packages reach a predetermined size.

[0026] According to the present invention, when the diameter of the package reaches a predetermined size that can sufficiently ensure the distance between the contact controller and the bobbin, the cover between end faces can be moved to the position between end faces. Thereby, it is possible to more reliably avoid the cover between end faces interfering with the bobbin.

[0027] The winding machine of the present invention includes a control unit that controls the drive of the moving mechanism, and the control unit moves the cover between end faces from the retracted position to the position between end faces at a predetermined timing calculated based on the winding elapsed time elapsed since the start of winding the yarn onto the bobbin. It is preferable to control the moving mechanism.

[0028] According to the present invention, at a predetermined timing when the diameter of the package becomes a size that can sufficiently ensure the distance between the contact controller and the bobbin, the cover between end faces can be moved to the position between end faces. Thereby, it is possible to more reliably avoid the cover between end faces interfering with the bobbin.

[0029] In the winding machine of the present invention, it is preferable that the cover between end faces is arranged in each of the plurality of spaces.

[0030] According to the present invention, it is possible to effectively suppress the inflow of air between all package end faces. In addition, it is possible to suppress the disturbance of the air flow existing between all package end faces. Thereby, the air resistance applied to the end face of each package can be effectively suppressed.

[0031] In the winding machine of the present invention, in the axial direction, it is preferable that the size of the gap between the cover between end faces and the package is 3 to 5 mm.

[0032] According to the present invention, within the range where the cover between end faces can avoid contact with the end face of the package, the cover between end faces is brought as close as possible to the end face of the package. For this reason, it is possible to more effectively suppress the inflow of the air outside the radial direction of the package between the package end faces.

[0033] In the winding machine of the present invention, when viewed from the axial direction, it is preferable that the distance between the contact controller surface and the contact point is 5 to 10 mm.

[0034] According to the present invention, within the range where the cover between end faces can avoid contact with the contact controller, the contact controller surface is brought as close as possible to the contact point. For this reason, it is possible to suppress, as much as possible by the cover between end faces, the inflow of air between the package end faces in the vicinity of the contact point due to the collision between the peripheral surface accompanying flow and the contact controller. Thereby, it is possible to more effectively suppress the increase in the air resistance applied to the end face of the package.

[0035] In the winding machine of the present invention, when viewed from the axial direction, it is preferable that the cover between end faces is continuously provided over an angular range of 25 degrees or more in the rotation direction of the package.

[0036] According to the present invention, it is possible to suppress the inflow of air between the package end faces over a wide range in the rotation direction of the package.

[0037] The winding machine of the present invention preferably includes a peripheral surface cover provided so as to partially surround the outer peripheral surfaces of the plurality of packages in the circumferential direction of the packages.

[0038] According to the present invention, it is possible to suppress the separation of the peripheral surface accompanying flow from the outer peripheral surface of the package. In addition, it is possible to suppress the inflow of air from the space around the package into the region along the outer peripheral surface of the package (hereinafter referred to as the outer peripheral surface region).

[0039] In the winding machine of the present invention, it is preferable that the circumferential surface cover is provided on the downstream side in the rotation direction of the package with respect to the contact point.

[0040] According to the present invention, in a region where the density of air is reduced by the peripheral surface accompanying flow colliding with the contact controller and being blocked, that is, in a region on the downstream side in the rotation direction of the package with respect to the contact point, it is possible to suppress the inflow of air into the outer peripheral surface region. In addition, it is possible to suppress the inflow of air from the outer peripheral surface region further into the space between the end faces of the package. Thereby, the air resistance applied to the package can be suppressed.

[0041] The winding machine of the present invention includes a support member that supports the contact controller, and it is preferable that the circumferential surface cover is directly or indirectly attached to the support member.

[0042] According to the present invention, there is no need to separately provide a member for supporting the circumferential surface cover.

[0043] In the winding machine of the present invention, it is preferable that the cover between the end faces is directly or indirectly attached to the circumferential surface cover.

[0044] According to the present invention, there is no need to separately provide a member for supporting the cover between the end faces.

[0045] In the bobbin winding machine of the present invention, the moving mechanism has a connecting member that moves along the extending direction of the peripheral surface cover when viewed from the axial direction, the connecting member is connected to the peripheral surface cover and the end surface intermediate cover, and the moving mechanism preferably moves the connecting member along the extending direction of the peripheral surface cover to move the end surface intermediate cover between the end surface intermediate position and the retracted position.

[0046] According to the present invention, by moving the connecting member with the peripheral surface cover as a reference point, the end surface intermediate cover can be moved between the end surface intermediate position and the retracted position. Therefore, there is no need to install a member different from the peripheral surface cover as a reference member when moving the connecting member, and the number of members can be reduced.

[0047] In the bobbin winding machine of the present invention, it is preferable that the connecting member is expandable and contractible in the radial direction of the package.

[0048] According to the present invention, when the end surface intermediate cover is in the retracted position, by bringing the end surface intermediate cover closer to the peripheral surface cover, the end surface intermediate cover can be moved as far away from the bobbin as possible. Therefore, the risk of the end surface intermediate cover interfering with the bobbin can be reduced. In addition, when the end surface intermediate cover is in the end surface intermediate position, the end surface intermediate cover can be expanded and contracted in the radial direction of the package. Thereby, the end surface intermediate cover can be arranged at a position where the inflow of air between the package end surfaces can be most effectively suppressed.

[0049] The bobbin winding machine of the present invention includes two said bobbin holders and a rotatable turret that supports each said bobbin holder, and each said bobbin holder is rotatably movable between a winding position where winding of yarn onto the bobbin is performed and a standby position different from the winding position by rotation of the turret, and when viewed from the axial direction, it is preferable that the peripheral surface cover is arranged outside the rotation orbits of the plurality of packages that rotate together with the bobbin holder.

[0050] According to the present invention, in a configuration having two bobbin holders, it is possible to avoid contact between a package that rotates and moves as the turret rotates and a peripheral surface cover.

Brief Description of the Drawings

[0051]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0052] (Spinning and Drawing Device 1) Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view of a spinning and drawing device 1 having a yarn winder 4 according to this embodiment. The vertical direction in the drawing of FIG. 1 is the vertical direction in which gravity acts, and the horizontal direction in the drawing is the front-rear direction. Also, the direction perpendicular to the drawing of FIG. 1 is the left-right direction, the front side of the drawing is the right side, and the back side of the drawing is the left side. Hereinafter, these directions will be used as appropriate for explanation. In FIG. 1, the description of the end face-to-end face cover 40 and the peripheral surface cover 50, which will be described later, is omitted.

[0053] The yarn take-up device 1 includes a first godet roller 8, a second godet roller 9, and a yarn regulating guide 7 for taking up the yarn Y spun from the spinning device 3, and a yarn winder 4 for winding the taken-up yarn Y around a plurality of bobbins B to form a plurality of packages P.

[0054] The first godet roller 8 is a roller whose axial direction is substantially parallel to the left-right direction, and is disposed above the front end portion of the yarn winder 4. The first godet roller 8 is rotationally driven by a motor (not shown). The second godet roller 9 is a roller whose axial direction is substantially parallel to the left-right direction, and is disposed above and rearward of the first godet roller 8. The second godet roller 9 is rotationally driven by a motor (not shown).

[0055] The yarn regulating guide 7 is disposed above the first godet roller 8. The yarn regulating guide 7 is, for example, a known comb-shaped yarn guide, and is for defining the interval between adjacent yarns Y to a predetermined value when a plurality of yarns Y are hung.

[0056] (Yarn winder 4) Next, the yarn winder 4 will be described with reference to FIGS. 1 and 2. FIG. 2 is a front view of the yarn winder 4. As shown in FIGS. 1 and 2, the yarn winder 4 includes a machine base 20, a plurality of swing fulcrum guides 21, a plurality of traverse guides 22, a turret 23, two bobbin holders 24, a contact controller 25, a control unit 26, and the like.

[0057] As shown in FIG. 1, the machine base 20 includes a machine base main body portion 27 erected and disposed at the rear portion of the yarn winder 4, and a frame body 28 (the support member of the present invention) fixed to the upper portion of the machine base main body portion 27 and extending forward. The turret 23 and the like are supported by the machine base main body portion 27. The contact controller 25 extending along the front-rear direction is supported by the frame body 28.

[0058] The plurality of fulcrum guides 21 are provided individually for the plurality of yarns Y and are arranged in the front-rear direction. The plurality of fulcrum guides 21 are attached to a guide support member 29 supported by a frame body 28, and when the plurality of yarns Y are respectively hung thereon, they serve as fulcrums when each of the plurality of yarns Y is shed.

[0059] The plurality of traverse guides 22 are provided individually for the plurality of yarns Y and are arranged in the front-rear direction. The plurality of traverse guides 22 are driven by a traverse motor 35 (see FIG. 8) and reciprocate in the front-rear direction. Thereby, the yarn Y hung on the traverse guide 22 is shed with the fulcrum guide 21 as a fulcrum.

[0060] The turret 23 is a disk-shaped member whose axial direction is substantially parallel to the front-rear direction, and is rotatably supported by the machine base main body 27. The turret 23 is rotationally driven by a turret motor 36 (see FIG. 8). The turret 23 cantilever supports two bobbin holders 24 and moves the two bobbin holders 24 by rotating about a rotation axis substantially parallel to the front-rear direction. Thereby, in the yarn winder 4, it is possible to exchange the bobbin holder 24 at the winding position (the upper position in FIG. 1) where the yarn Y is wound onto the bobbin B and the bobbin holder 24 at the standby position (the lower position in FIG. 1) where the yarn Y is not wound. And it is possible to replace the bobbin B for the bobbin holder 24 at the standby position while the yarn Y is being wound onto the bobbin B attached to the bobbin holder 24 at the winding position. Further, the turret 23 is configured to be rotatable as the amount of the yarn Y wound around the bobbin B increases during the winding of the yarn Y. Specifically, as the amount of the yarn Y wound onto the bobbin B increases, the turret 23 rotates counterclockwise.

[0061] The two bobbin holders 24 are each for mounting a plurality of bobbins B. The two bobbin holders 24 are each rotatably supported by a turret 23 supported by the machine body portion 27 and extend forward from the turret 23. More specifically, as shown in FIG. 2, when viewed from the front-rear direction, each of the two bobbin holders 24 is supported by the turret 23 at a position that is point-symmetrical to each other about the rotation center of the turret 23. The axial directions of the two bobbin holders 24 are substantially parallel to the front-rear direction. Note that the front end side (front side) of the bobbin holder 24 is generally the working side where operations such as mounting the bobbin B on the bobbin holder 24 are performed.

[0062] A plurality of bobbins B provided individually for a plurality of yarns Y are mounted side by side in the front-rear direction on each bobbin holder 24. The number of bobbins B mounted on one bobbin holder 24 is, for example, 16. Also, the two bobbin holders 24 are each rotationally driven by individual winding motors 37, 38 (see FIG. 8). Note that in the present embodiment, the rotation direction of the bobbin holder 24 when viewed from the front is counterclockwise in FIG. 2 (see the solid line arrow in FIG. 2).

[0063] As shown in FIG. 1, the contact controller 25 extends along the front-rear direction. As shown in FIGS. 1 and 2, the contact controller 25 is a roller whose axial direction is substantially parallel to the front-rear direction and is disposed immediately above the bobbin holder 24 in the upper winding position. The contact controller 25 applies pressure to the outer peripheral surface of the package P being wound by contacting the outer peripheral surfaces of a plurality of packages P formed by winding a plurality of yarns Y around a plurality of bobbins B mounted on the bobbin holder 24 in the winding position, thereby adjusting the shape of the package P.

[0064] In this embodiment, the contact controller 25 is swingably supported by the frame body 28 via the roller support member 30. As shown in FIGS. 1 and 2, the roller support member 30 has, for example, a support portion 31, an arm portion 32, and a swing shaft 33. The support portion 31 rotatably supports the contact controller 25 at both front and rear ends in the longitudinal direction of the contact controller 25. One end of the arm portion 32 is connected to the support portion 31 and extends toward the frame body 28 in a direction orthogonal to the longitudinal direction. The swing shaft 33 is connected to the other end of the arm portion 32 and extends in the longitudinal direction and is swingably supported by the frame body 28. The arm portion 32 is configured to be swingable about the swing shaft 33 (see the dashed arrow in FIG. 2).

[0065] The control unit 26 includes a CPU, a ROM, a RAM, etc. The control unit 26 controls each part by the CPU according to the program stored in the ROM. Specifically, the control unit 26 controls the traverse motor 35, the turret motor 36, the take-up motors 37, 38, the movement mechanism motor 63 described later, the sensor 90 described later, etc.

[0066] In the bobbin winder 4 having the configuration as described above, when the bobbin holder 24 at the winding position is rotationally driven, the yarn Y that is shed by the traverse guide 22 is wound onto the bobbin B, and the package P is formed. At this time, together with the rotating bobbin holder 24, the package P is rotating. That is, the rotation direction of the package P is counterclockwise in FIG. 2, similar to the rotation direction of the bobbin holder 24 (see the solid-line arrow in FIG. 2). While the package P is being formed, the contact controller 25 abuts against the outer peripheral surface of the package P and applies contact pressure, thereby shaping the package P. The contact controller 25 rotates in the direction opposite to the rotation direction of the bobbin holder 24, that is, clockwise in FIG. 2 (see the solid-line arrow in FIG. 2). When the yarn Y is wound onto the bobbin B in the present embodiment, the yarn Y that contacts the right side of the contact controller 25 is sent along the circumferential direction of the contact controller 25 to the downstream side in the rotation direction of the contact controller 25. Then, the yarn Y passes beyond the contact point C between the package P (or the bobbin B immediately after the start of winding of the yarn Y onto the bobbin B) and the contact controller 25, and is sent along the circumferential direction of the package P to the downstream side in the rotation direction of the package P.

[0067] Furthermore, the yarn winder 4 of the present embodiment has a plurality of end-face-to-end-face covers 40 and a circumferential surface cover 50. Hereinafter, the end-face-to-end-face cover 40 and the circumferential surface cover 50 will be described with reference to FIGS. 2 to 5. FIG. 3 is a partial perspective view of the yarn winder 4 including the vicinity of the front end of the bobbin holder 24 at the winding position. FIG. 4 is a partial front view of the yarn winder 4 including the vicinity of the bobbin holder 24 at the winding position. FIG. 5 is a partial side view of the yarn winder 4 as viewed from the right side.

[0068] (End-face-to-end-face cover 40) As shown in FIG. 3, the plurality of end-face-to-end-face covers 40 are respectively disposed in a plurality of spaces 70 formed between end faces E of packages P adjacent to each other in the front-rear direction (hereinafter referred to as between package end faces). Specifically described, in the present embodiment, the thread Y is wound around each of the 16 bobbins B attached to the bobbin holder 24 at the winding position to form 16 packages P. Then, 15 spaces 70 are formed between the package end faces of the 16 packages P. Each end-face-to-end-face cover 40 is disposed in each of the 15 spaces 70. In the present embodiment, while a space 70 is formed between the end faces of adjacent packages P, no space is formed between the end faces of adjacent bobbins B. That is, adjacent bobbins B are in contact with each other without a gap (see FIGS. 1 and 5). E While a space 70 is formed between the end faces of adjacent packages P, no space is formed between the end faces of adjacent bobbins B. That is, adjacent bobbins B are in contact with each other without a gap (see FIGS. 1 and 5).

[0069] As shown in FIG. 4, each end-face-to-end-face cover 40 has a contact controller surface 41 and a bobbin surface 42. The contact controller surface 41 is a surface facing the contact controller 25 side when viewed from the front-rear direction. In other words, the contact controller surface 41 is a surface facing the outer side in the radial direction of the package P. The bobbin surface 42 is a surface facing the center Q side of the package P when viewed from the front-rear direction. In other words, the bobbin surface 42 is a surface facing the inner side in the radial direction of the package P. Further in other words, the bobbin surface 42 is a surface facing the center side of the bobbin B when viewed from the front-rear direction. When viewed from the front-rear direction, the center of the bobbin B coincides with the center Q of the package P.

[0070] As shown in FIG. 4, the contact controller surface 41 is disposed on the center Q side of the package P rather than on the outer peripheral surface of the package P in the radial direction of the package P. In other words, the contact controller surface 41 is disposed on the center Q side of the package P rather than the contact point C in the radial direction of the package P. In the present embodiment, the contact controller surface 41 is disposed on the center Q side of the package P rather than the contact point C between the package P and the contact controller 25 when the package diameter reaches a predetermined size in the radial direction of the package P. The package diameter of the predetermined size is larger than the package diameter immediately after the start of winding of the yarn Y around the bobbin B (for example, 120 mm) and smaller than the package diameter at the end of winding of the yarn Y around the bobbin B (i.e., the full winding diameter, for example, 380 mm). The package diameter of the predetermined size is, for example, 200 mm.

[0071] When viewed from the front-rear direction, the distance between the contact controller surface 41 and the contact point C is preferably 5 to 10 mm. The distance here refers to the shortest distance between the contact controller surface 41 and the contact point C. In the present embodiment, when viewed from the front-rear direction, the distance between the contact controller surface 41 and the contact point C is, for example, 5 mm.

[0072] As shown in FIG. 4, when viewed from the front-rear direction, the bobbin surface 42 has a curved shape along the rotation direction of the package P. Specifically, when viewed from the front-rear direction, the bobbin surface 42 has an arc shape along the rotation direction of the package P. The rotation direction of the package P here refers to the rotation direction of the end face E of the package P. In the present embodiment, when viewed from the front-rear direction, the contact controller surface 41 also has an arc shape along the rotation direction of the package P.

[0073] Further, as shown in FIG. 4, when viewed from the front-rear direction, at least a part of the contact controller surface 41 is from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package P with respect to the virtual line segment V connecting the contact point C and the center Q of the package P. Angle It is provided so as to be within the range. The upstream side in the rotational direction of the package P refers to the range of 180 degrees clockwise with respect to the virtual line segment V in the end face E of the package P when viewed from the front side. Angle The downstream side in the rotational direction of the package P refers to the range of 180 degrees counterclockwise with respect to the virtual line segment V in the end face E of the package P when viewed from the front side. Angle range.

[0074] In addition, as shown in FIG. 4, when viewed from the front-rear direction, a part of the end-face-to-end-face cover 40 is provided on the upstream side in the rotational direction of the package P with respect to the virtual line segment V. Further, when viewed from the front-rear direction, another part of the end-face-to-end-face cover 40 is provided on the downstream side in the rotational direction of the package P with respect to the virtual line segment V.

[0075] When viewed from the front-rear direction, the end-face-to-end-face cover 40 is continuously provided over a range of 25 degrees or more in the rotational direction of the package P. Angle More specifically, when viewed from the front-rear direction, a part of the end-face-to-end-face cover 40 is continuously provided over a range from 20 degrees on the upstream side to 5 degrees on the downstream side in the rotational direction of the package P with respect to the virtual line segment V. In other words, when viewed from the front-rear direction, the angle θ1 (see FIG. 4) formed by the line segment V1 connecting the upstream end 40a of the end-face-to-end-face cover 40 on the upstream side in the rotational direction of the package P with respect to the virtual line segment V and the center Q of the package P is 20 degrees or more. And when viewed from the front-rear direction, the angle θ2 (see FIG. 4) formed by the line segment V2 connecting the downstream end 40b of the end-face-to-end-face cover 40 on the downstream side in the rotational direction of the package P with respect to the virtual line segment V and the center Q of the package P is 5 degrees or more. Further, when viewed from the front-rear direction, the end-face-to-end-face cover 40 is continuously provided (i.e., without a gap) from the upstream end 40a to the downstream end 40b. In this embodiment, when viewed from the front-rear direction, the end-face-to-end-face cover 40 is, for example, from 30 degrees on the upstream side to 15 degrees on the downstream side in the rotational direction of the package P with respect to the virtual line segment V. Angle range. Angle It is preferably provided continuously over a range. That is, θ1 is preferably 30 degrees and θ2 is preferably 15 degrees. However, the cover 40 between end faces is not limited to such a configuration.

[0076] Furthermore, as shown in FIG. 5, in the front-rear direction, the size S of the gap between the cover 40 between end faces and the end face E of the package P is preferably 3 to 5 mm. The gap here refers to the shortest distance between the cover 40 between end faces and the end face E of the package P. In the present embodiment, in the front-rear direction, the size S of the gap between the cover 40 between end faces and the end face E of the package P is, for example, 5 mm.

[0077] (Peripheral surface cover 50) As shown in FIG. 4, the peripheral surface cover 50 is provided so as to partially surround the outer peripheral surfaces of a plurality of packages P in the circumferential direction of the package P. More specifically, the peripheral surface cover 50 is provided, for example, along the circumferential direction of the package P when the package diameter reaches the full winding diameter. Further, the peripheral surface cover 50 is provided on the downstream side in the rotation direction of the package P with respect to the contact point C. With respect to the peripheral surface cover 50, the downstream side in the rotation direction of the package P with respect to the contact point C means the upper side of the straight line connecting the contact point C and the center Q of the package P (that is, the extension line of the virtual line segment V).

[0078] Furthermore, when viewed from the front-rear direction, the peripheral surface cover 50 is disposed outside the rotation orbits of the plurality of packages P that rotate and move together with the bobbin holder 24 as the turret 23 rotates. The rotation orbit M of the bobbin holder 24 that rotates and moves as the turret 23 rotates is indicated by a two-dot chain line in FIG. 2. Also, in the present embodiment, in the radial direction of the package P, the distance between the peripheral surface cover 50 and the center Q of the package P is larger than the distance between each cover 40 between end faces and the center Q of the package P (see FIG. 4). In other words, the peripheral surface cover 50 is disposed at a position outside the package P in the radial direction compared to each cover 40 between end faces.

[0079] In this embodiment, the shortest distance between the circumferential surface cover 50 and the contact point C is preferably as close as possible within the range where the circumferential surface cover 50 and the contact roller 25 do not come into contact, for example, 25 mm. The circumferential surface cover 50 is preferably provided continuously over a range of 45 degrees or more along the circumferential direction of the package P. Angle In this embodiment, the circumferential surface cover 50 is provided continuously over a range of 60 degrees along the circumferential direction of the package P. Angle Also, in this embodiment, in the circumferential direction of the package P, a part of the circumferential surface cover 50 and a part of the end face - to - end face cover 40 overlap (see FIG. 4).

[0080] Furthermore, as shown in FIG. 3, the circumferential surface cover 50 extends in the front - rear direction. The length of the circumferential surface cover 50 in the front - rear direction is substantially the same as the length of the bobbin holder 24 in the front - rear direction.

[0081] As shown in FIG. 4, the circumferential surface cover 50 is attached to the frame body 28 via the connecting member 80. In other words, the circumferential surface cover 50 is indirectly attached to the frame body 28. One end of the connecting member 80 is connected to the frame body 28, and the other end of the connecting member 80 is connected to the circumferential surface cover 50. One end of the connecting member 80 is above and to the left of the other end of the connecting member 80. Also, the connecting member 80 may extend, for example, in the front - rear direction. However, the connecting member 80 is not limited to such a configuration.

[0082] Also, as shown in FIGS. 3 and 4, the circumferential surface cover 50 is connected to each between-end-face cover 40 via each of a plurality of rod-shaped members 61. In other words, each between-end-face cover 40 is attached to the circumferential surface cover 50 via the rod-shaped members 61. Stated still differently, each between-end-face cover 40 is indirectly attached to the circumferential surface cover 50. As shown in FIG. 4, one end of the rod-shaped member 61 is connected to the circumferential surface cover 50, and the other end of the rod-shaped member 61 is connected to the bobbin surface 42 of the between-end-face cover 40. In the present embodiment, the other end of the rod-shaped member 61 is connected to the bobbin surface 42 near the downstream end 40b of the between-end-face cover 40, but the present invention is not limited to such a configuration. Also, as shown in FIG. 3, the plurality of rod-shaped members 61 each connected to each of the plurality of between-end-face covers 40 are connected to the circumferential surface cover 50.

[0083] (Moving mechanism 60) The bobbin winder 4 of the present embodiment has a moving mechanism 60 for moving a plurality of between-end-face covers 40. Hereinafter, the moving mechanism 60 will be described in detail with reference to FIGS. 3, 4, 6, and 7.

[0084] The moving mechanism 60 moves a plurality of between-end-face covers 40 between an in-between-end-faces position (the positions in FIGS. 3, 4, and 7) and a retracted position (the position in FIG. 6). The in-between-end-faces position is a position where at least a part of each between-end-face cover 40 is disposed in each of the spaces 70 between the package end faces. In the present embodiment, the in-between-end-faces position is a position where all of each between-end-face cover 40 is disposed in each of the spaces 70. Additionally, to explain, the in-between-end-faces position in the present embodiment is a position where at least a part of the contact controller surface 41 is within a range from 30 degrees upstream to 30 degrees downstream in the rotational direction of the package P with respect to the virtual line segment V. Angle The retracted position is a position outside the radial direction of the package P from the in-between-end-faces position. Additionally, to explain, the retracted position is a position where the between-end-face cover 40 is disposed outside the rotational orbit of the bobbin B that rotates together with the bobbin holder 24 as the turret 23 rotates.

[0085] As shown in FIGS. 3 and 4, the moving mechanism 60 includes the plurality of rod-shaped members 61 and the plurality of rails 62 described above. Each rail 62 extends along the left-right direction and is provided along the inner surface of the circumferential surface cover 50. The inner surface of the circumferential surface cover 50 is the surface facing the inner side in the radial direction of the package P. In other words, the inner surface of the circumferential surface cover 50 is the surface facing the center Q side of the package P. The rail 62 slidably supports one end of the rod-shaped member 61. In other words, one end of the rod-shaped member 61 is connected to the circumferential surface cover 50 via the rail 62.

[0086] As described above, the other end of the rod-shaped member 61 is connected to the cover between end faces 40. Due to such a configuration, when each rod-shaped member 61 slides along the corresponding rail 62, the cover between end faces 40 connected to the other end of the rod-shaped member 61 can move between the position between end faces and the retracted position. The rod-shaped member 61 corresponds to the connecting member of the present invention. The sliding of the rod-shaped member 61 along the rail 62 is driven by, for example, a motor 63 for moving mechanism (see FIG. 8). The driving of the motor 63 for moving mechanism is controlled by the control unit 26. In the present embodiment, the sliding of the plurality of rod-shaped members 61 is controlled collectively.

[0087] (Sensor 90) Further, the winding machine 4 of the present embodiment has a sensor 90 that detects information regarding the size of the diameters of the plurality of packages P mounted on the bobbin holder 24 at the winding position (see FIG. 1). The sensor 90 is, for example, a sensor that detects the inclination of the axis of the bobbin holder 24 with respect to the front-rear direction. The inclination of the bobbin holder 24 depends on the weights of the plurality of packages P that increase as the diameters of the respective packages P expand, that is, it corresponds to the "information regarding the size of the diameter of the package P" of the present invention. Information regarding the inclination of the bobbin holder 24 detected by the sensor 90 is transmitted to the control unit 26.

[0088] The control unit 26 calculates the diameters of the plurality of packages P based on the inclination of the bobbin holder 24. Then, when the diameters of the plurality of packages P reach a predetermined size, the control unit 26 controls the moving mechanism 60 to move each between-end-faces cover 40 from the retracted position to the between-end-faces position. The predetermined package diameter size is, for example, 200 mm. Note that the "information regarding the size of the diameter of the package P" is not limited to the inclination of the bobbin holder 24 described above. For example, when the sensor 90 is an optical sensor or the like and detects the coordinate positions of the outer peripheral surfaces of the respective packages P, the coordinate positions of the outer peripheral surfaces of the respective packages P are the "information regarding the size of the diameter of the package P".

[0089] (Thread winding operation) Subsequently, the thread winding operation of the thread Y by the winding machine 4 will be described. First, at the start of winding the thread Y onto the bobbin B, as shown in FIG. 6, the bobbin B mounted on the bobbin holder 24 at the winding position is in contact with the contact controller 25. At this time, each between-end-faces cover 40 is in the retracted position. Each between-end-faces cover 40 in the retracted position is disposed radially inward of the package P than the circumferential surface cover 50. Also, at the start of winding the thread Y onto the bobbin B, the contact controller 25 is in a state of being slightly swung clockwise about the swing axis 33 from the position shown in FIG. 4 (see the solid-line arrow in FIG. 6).

[0090] As the diameter of the package P expands as the winding of the thread Y onto the bobbin B progresses, the contact controller 25 moves to the position shown in FIG. 4. That is, the contact controller 25 swings slightly counterclockwise about the swing axis 33. Also, as the diameter of the package P expands with an increase in the amount of the thread Y wound onto the bobbin B, the turret 23 is rotated little by little counterclockwise (see the solid-line arrow in FIG. 2). As a result, as the diameter of the package P expands, the bobbin holder 24 moves little by little in the lower left direction. As a result, even if the diameter of the package P expands, the coordinate position of the contact point C between the package P and the contact controller 25 when viewed from the front-rear direction hardly changes.

[0091] During the winding of the yarn Y, the control unit 26 constantly or at regular intervals calculates the diameters of the plurality of packages P based on the inclination of the bobbin holder 24 detected by the sensor 90. When the diameters of the plurality of packages P reach a predetermined size (for example, 200 mm), the control unit 26 controls the moving mechanism 60 to move each between-end-faces cover 40 from the retracted position to the between-end-faces position (see the solid-line arrow in FIG. 7). Then, in the state of FIG. 7, the winding of the yarn Y is performed until the package P reaches the full winding diameter.

[0092] (Suppression effect of air resistance of the yarn winding machine according to the embodiment) Subsequently, the suppression effect of the air resistance of the yarn winding machines according to Embodiments 1 and 2 is shown in FIG. 9. The yarn winding machine according to Embodiment 1 is a yarn winding machine having the between-end-faces cover 40 and not having the peripheral surface cover 50. The yarn winding machine according to Embodiment 2 is a yarn winding machine having the between-end-faces cover 40 and the peripheral surface cover 50 (the same as the yarn winding machine 4 in the above embodiment). Also, the yarn winding machines of Embodiment 1 and Embodiment 2 have a moving mechanism 60 for moving the between-end-faces cover 40. The between-end-faces cover 40, the peripheral surface cover 50, and the moving mechanism 60 have the same configurations as those in the above embodiment.

[0093] FIG. 9 shows the suppression rate (%) of the air resistance suppressed by the yarn winding machines according to Embodiment 1 and Embodiment 2 as compared with the yarn winding machine according to the comparative example. The yarn winding machine according to the comparative example is a yarn winding machine not having the between-end-faces cover 40 and the peripheral surface cover 50. In FIG. 9, the simulation values (%) of the suppression rate of the air resistance of the yarn winding machines according to Embodiment 1 and Embodiment 2 with respect to the air resistance of the yarn winding machine according to the comparative example are shown. The suppression rate of the air resistance in FIG. 9 is the suppression rate of the air resistance applied to the outer peripheral surface of each package P (the upper part of FIG. 9), the suppression rate of the air resistance applied to the end face E of each package P (the middle part of FIG. 9), and the suppression rate of the air resistance applied to the entire package P (that is, the total of the air resistance applied to the outer peripheral surface of the package P and the air resistance applied to the end face E) (the lower part of FIG. 9). Each air resistance is the air resistance from the start to the end of the winding of the yarn Y onto the bobbin B. The package diameter at the start of winding is 120 mm, and the package diameter at the end of winding (that is, the full winding diameter) is 380 mm.

[0094] The air resistance applied to the outer peripheral surface of each package P is the total value of the air resistance applied to the outer peripheral surfaces of the 16 packages P mounted on the bobbin holder 24 at the winding position. The air resistance applied to the outer peripheral surface of the package P is derived based on the speed difference between the speed of the air flowing along the outer peripheral surface of the package P (hereinafter referred to as the outer peripheral surface accompanying flow) and the rotational speed (peripheral speed) of the package P. The air resistance applied to the end face E of each package P is the total value of the air resistance applied to the 32 end faces E of the 16 packages P mounted on the bobbin holder 24 at the winding position. The air resistance applied to the end face E of the package P is derived based on the speed difference between the speed of the air in contact with the end face E of the package P and the rotational speed of the end face E of the package P. The air resistance applied to the entire package P is the total value of the air resistance applied to the outer peripheral surface of each package P and the air resistance applied to the end face E of each package P.

[0095] As shown in FIG. 9, in the yarn winding machines according to the first and second embodiments, suppression of the air resistance of the entire yarn winding machine is realized as compared with the comparative example. In the yarn winding machine according to the first embodiment having the end face-to-end face cover 40 and not having the circumferential surface cover 50, the air resistance applied to the end face E of each package P is suppressed by 22% as compared with the comparative example. As a result, in the yarn winding machine according to the first embodiment, suppression of 10% of the air resistance of the entire yarn winding machine can be realized as compared with the comparative example. Further, in the yarn winding machine according to the second embodiment having both the end face-to-end face cover 40 and the circumferential surface cover 50, the air resistance applied to the outer peripheral surface of each package P is suppressed as compared with the comparative example. Furthermore, in the yarn winding machine according to the second embodiment, the air resistance applied to the end face E of each package P is further suppressed as compared with the first embodiment. As a result, in the yarn winding machine according to the second embodiment, suppression of 21% of the air resistance of the entire yarn winding machine can be realized as compared with the comparative example.

[0096] From the above results, it is presumed that by providing the cover 40 between the end faces, the air resistance applied to the yarn winder can be suppressed, and a sufficient effect of reducing power consumption can be obtained. And by further providing the circumferential surface cover 50 in addition to the cover 40 between the end faces, the air resistance applied to the yarn winder can be more effectively suppressed, and it is presumed that the effect of reducing power consumption can be obtained more effectively.

[0097] (Effect) The yarn winder 4 of the present embodiment includes a bobbin holder 24 to which a plurality of bobbins B around which a plurality of yarns Y are respectively wound are attached, a contact roller 25 that contacts the outer peripheral surfaces of a plurality of packages P formed by winding a plurality of yarns Y around the plurality of bobbins B respectively, and a plurality of end-face covers 40 respectively disposed in a plurality of spaces 70 formed between the end faces of the packages P adjacent to each other in the front-rear direction. Each end-face cover 40 has a contact roller surface 41 facing the contact roller 25 side when viewed from the front-rear direction. The contact roller surface 41 is disposed closer to the center Q of the package P than the outer peripheral surface of the package P in the radial direction of the package P. And when viewed from the front-rear direction, at least a part of the contact roller surface 41 is within the range from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package P with respect to the virtual line segment V connecting the contact point C and the center Q of the package P. Angle It is provided so as to be within the range.

[0098] According to the present embodiment, at least a part of the contact roller surface 41 of the end-face cover 40 disposed between the package end faces is disposed closer to the center Q of the package P than the contact point C in the radial direction of the package P. In other words, at least a part of the contact roller surface 41 of the end-face cover 40 is In the radial direction of the package P inside the outer peripheral surface of the package P. For this reason, it is possible to suppress the air on the outer side in the radial direction of the package P from entering inside the end-face cover 40, and it is possible to effectively suppress the inflow of air between the package end faces. In addition, at least a part of the end-face cover 40 is within the range from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package P with respect to the virtual line segment V. Angle It is provided so as to be within the range. In other words, the end-face cover 40 is provided near the contact point C. Therefore, it is possible to suppress the inflow of air between the package end faces in the vicinity of the contact point C due to the collision between the air flowing along the outer peripheral surface of the package P (hereinafter referred to as the outer peripheral surface accompanying flow) and the contact controller 25. For this reason, it is possible to suppress the disturbance of the air flow existing between the rotating package end faces. As a result, the air resistance applied to the end face of each package P can be effectively suppressed, and thus the effect of reducing power consumption can be improved. E In addition, the air resistance applied to the end face can be effectively suppressed, and thus the effect of reducing power consumption can be improved.

[0099] Also, in the spooling machine 4 of the present embodiment, the end-face covers 40 are respectively arranged in a plurality of spaces 70. According to this, it is possible to effectively suppress the inflow of air between all the package end faces. In addition, it is possible to suppress the disturbance of the air flow existing between all the package end faces. As a result, the air resistance applied to the end face of each package P can be effectively suppressed. E In addition, the air resistance applied to the end face can be effectively suppressed.

[0100] Also, in the spooling machine 4 of the present embodiment, when viewed from the front-rear direction, a part of the end-face cover 40 is provided on the upstream side in the rotation direction of the package P with respect to the virtual line segment V. According to this, it is possible to suppress a part of the air blocked by the contact controller 25 from flowing into the space between the package end faces in the region on the upstream side in the rotation direction of the package P with respect to the contact point C. As a result, it is possible to suppress the disturbance of the air flow existing between the package end faces, and the air resistance applied to the end face E of each package P can be effectively suppressed.

[0101] Further, in the spooling machine 4 of the present embodiment, when viewed from the front-rear direction, a part of the end face cover 40 is provided on the downstream side in the rotation direction of the package P with respect to the virtual line segment V. According to this, in the region where the density of air is reduced due to the peripheral surface accompanying flow colliding with the contact controller 25 and being blocked, that is, in the region on the downstream side in the rotation direction of the package P from the contact point C, the inflow of air between the package end faces can be suppressed. Thereby, it is possible to suppress the disturbance of the air flow existing between the package end faces, and effectively suppress the air resistance applied to the end face E of each package P.

[0102] Also, in the spooling machine 4 of the present embodiment, the end face cover 40 has a bobbin surface 42 facing the center Q side of the package P when viewed from the front-rear direction. And when viewed from the front-rear direction, the bobbin surface 42 has a curved shape along the rotation direction of the package P. According to this, the air existing between the package end faces flows along the bobbin surface 42 of the end face cover 40. Since the bobbin surface 42 has a curved shape along the rotation direction of the package P, the air flowing along the bobbin surface 42 tends to flow in the same direction as the rotation direction of the end face E of the package P. That is, the speed difference between the speed of the air flowing along the bobbin surface 42 and the rotation speed of the end face E of the package P is reduced. Thereby, an increase in the air resistance received by the end face E of the package P from the air flowing between the package end faces can be suppressed.

[0103] Furthermore, in the spooling machine 4 of the present embodiment, in the front-rear direction, the size of the gap S between the end face cover 40 and the package P is 3 to 5 mm. According to this, within the range where the end face cover 40 can avoid contact with the end face E of the package P, the end face cover 40 is brought as close as possible to the end face E of the package P. Therefore, the inflow of the air outside the radial direction of the package P between the package end faces can be more effectively suppressed.

[0104] Also, in the bobbin winder 4 of this embodiment, when viewed from the front-rear direction, the distance between the contact roller surface 41 and the contact point C is 5 to 10 mm. According to this, within the range where the cover 40 between end faces can avoid contact with the contact roller 25, the contact roller surface 41 is brought as close as possible to the contact point C. For this reason, the inflow of air between the package end faces in the vicinity of the contact point C due to the collision between the outer peripheral surface accompanying flow and the contact roller 25 can be suppressed as much as possible by the cover 40 between end faces. Thereby, an increase in the air resistance applied to the end face E of each package P can be more effectively suppressed.

[0105] Also, in the bobbin winder 4 of this embodiment, when viewed from the front-rear direction, the cover 40 between end faces is 25 degrees or more in the rotation direction of the package P Angle continuously provided over a range. According to this, the inflow of air between the package end faces can be suppressed over a wide range in the rotation direction of the package P.

[0106] Also, in the bobbin winder 4 of this embodiment, when viewed from the front-rear direction, a part of the cover 40 between end faces is from 20 degrees on the upstream side to 5 degrees on the downstream side in the rotation direction of the package P with respect to the virtual line segment V Angle continuously provided over a range. According to this, the inflow of air between the package end faces can be suppressed in both the region immediately upstream and the region immediately downstream in the rotation direction of the package P from the contact point C.

[0107] Furthermore, the bobbin winder 4 of this embodiment has a plurality of covers 40 between end faces at the end faces of adjacent packages P EIt includes a moving mechanism 60 that moves between an in-end position where at least a part of the cover 40 between the end faces is arranged in each of the spaces 70 between them, and a retracted position that is radially outside the package P than the in-end position. Immediately after the start of winding of the yarn Y, since the diameter of the package P is very small, the contact controller 25 and the bobbin B are close to each other in the radial direction of the package P. For this reason, depending on the positional relationship between the cover 40 between the end faces and the contact controller 25, there is a risk that the cover 40 between the end faces may interfere with the bobbin B immediately after the start of winding of the yarn Y. In particular, as in this embodiment, when the bobbins B adjacent to each other are in contact without a gap (that is, no space is formed between the end faces of the bobbins B adjacent to each other), the risk of the cover 40 between the end faces interfering with the bobbin B becomes greater. This is because there is a possibility that sufficient installation space for the cover 40 between the end faces (for example, the space between the end faces of the bobbins B adjacent to each other) that can avoid interference between the cover 40 between the end faces and the bobbin B cannot be secured.

[0108] In this regard, according to this embodiment, immediately after the start of winding of the yarn Y, by moving the cover 40 between the end faces to the retracted position, it is possible to surely avoid the cover 40 between the end faces interfering with the bobbin B. Then, as the winding of the yarn Y onto each bobbin B progresses and the diameter of the package P increases, and when the distance between the contact controller 25 and the bobbin B becomes sufficiently large, the cover 40 between the end faces can be moved to the in-end position. Thereby, while avoiding the cover 40 between the end faces from interfering with the bobbin B, it is possible to suppress the inflow of air between the package end faces.

[0109] Further, the winding machine 4 of the present embodiment includes a sensor 90 that detects information regarding the diameters of a plurality of packages P, and a control unit 26 that controls the driving of the moving mechanism 60. The control unit 26 calculates the diameters of the plurality of packages P based on the information regarding the diameters of the plurality of packages P, and controls the moving mechanism 60 to move the cover 40 between end faces from the retracted position to the position between end faces when the diameters of the plurality of packages P reach a predetermined size. According to this, when the diameter of the package P reaches a predetermined size that can sufficiently secure the distance between the contact controller 25 and the bobbin B, the cover 40 between end faces can be moved to the position between end faces. Thereby, it is possible to more reliably avoid the cover 40 between end faces from interfering with the bobbin B.

[0110] Further, the winding machine 4 of the present embodiment includes a peripheral surface cover 50 provided so as to partially surround the outer peripheral surfaces of the plurality of packages P in the circumferential direction of the package P. According to this, it is possible to suppress the accompanying flow on the outer peripheral surface from peeling off from the outer peripheral surface of the package P. In addition, it is possible to suppress air from flowing into the region along the outer peripheral surface of the package P (hereinafter referred to as the outer peripheral surface region) from the space around the package P.

[0111] Further, in the winding machine 4 of the present embodiment, the peripheral surface cover 50 is provided on the downstream side in the rotation direction of the package P with respect to the contact point C. According to this, in the region where the density of air is reduced due to the accompanying flow on the outer peripheral surface colliding with and blocking the contact controller 25, that is, in the region on the downstream side in the rotation direction of the package P with respect to the contact point C, it is possible to suppress air from flowing into the outer peripheral surface region. In addition, it is possible to suppress air from further flowing into the space between the package end faces from the outer peripheral surface region. Thereby, it is possible to suppress the air resistance applied to the package P.

[0112] Furthermore, the winding machine 4 of the present embodiment includes a frame body 28 that supports the contact controller 25. And the peripheral surface cover 50 is indirectly attached to the frame body 28. According to this, it is not necessary to separately provide a member for supporting the peripheral surface cover 50.

[0113] Further, in the spooling machine 4 of the present embodiment, the end face cover 40 is indirectly attached to the circumferential face cover 50. According to this, it is not necessary to separately provide a member for supporting the end face cover 40.

[0114] Further, in the spooling machine 4 of the present embodiment, the moving mechanism 60 has a plurality of rod-shaped members 61 that move along the extending direction of the circumferential face cover 50 when viewed from the front-rear direction. The plurality of rod-shaped members 61 are connected to each of the circumferential face cover 50 and the plurality of end face covers 40. Then, the moving mechanism 60 moves each of the plurality of rod-shaped members 61 along the extending direction of the circumferential face cover 50, thereby moving the plurality of end face covers 40 between the end face position and the retracted position. According to this, by moving the rod-shaped member 61 with the circumferential face cover 50 as a base point, the end face cover 40 can be moved between the end face position and the retracted position. For this reason, it is not necessary to install a member different from the circumferential face cover 50 as a member serving as a base point when moving the rod-shaped member 61, and the number of members can be reduced. Furthermore, since it is not necessary to provide the separate member, it is not necessary to secure a space for providing the separate member. Therefore, an increase in the size of the apparatus due to providing the separate member can be avoided.

[0115] Further, the spooling machine 4 of the present embodiment includes two bobbin holders 24 and a rotatable turret 23 that supports each bobbin holder 24. Each bobbin holder 24 is rotatably movable between a winding position where the yarn Y is wound around the bobbin B and a standby position different from the winding position by the rotation of the turret 23. And when viewed from the front-rear direction, the circumferential face cover 50 is disposed outside the rotation orbits of the plurality of packages P that rotate together with the bobbin holder 24. According to this, in the configuration having the two bobbin holders 24, contact between the package P that rotates with the rotation of the turret 23 and the circumferential face cover 50 can be avoided.

[0116] (Modification example) A modified example in which the above-described embodiment is modified will be described below. Hereinafter, for those having the same configuration as the above-described embodiment, the same reference numerals will be given and the description thereof will be omitted as appropriate.

[0117] (First Modified Example) A yarn winder according to a first modified example different from the above-described embodiment will be described. The yarn winder according to the first modified example has, similar to the yarn winder 4 of the above-described embodiment, a machine base 20, a plurality of swing fulcrum guides 21, a plurality of traverse guides 22, a turret 23, two bobbin holders 24, a contact controller 25, a control unit 26, etc. The description of these components will be omitted.

[0118] In the yarn winder according to the first modified example, similar to the above-described embodiment, it has a plurality of between-end-face covers 40 and a moving mechanism 60. The moving mechanism 60 moves the plurality of between-end-face covers 40 between a between-end-face position where at least a part of each between-end-face cover 40 is disposed in each space 70 between the end faces of adjacent packages P, and a retracted position which is a position radially outside the package P from the between-end-face position. Further, in the first modified example, the between-end-face position is a position closer to the contact point C than the retracted position in the circumferential direction of the package P. That is, in the yarn winder according to the first modified example, the between-end-face cover 40 located at the between-end-face position is located closer to the contact point C than the between-end-face cover 40 located at the retracted position in the circumferential direction of the package P.

[0119] According to such a configuration, at least a part of the between-end-face cover 40 located at the between-end-face position is disposed between the end faces of adjacent packages P (hereinafter referred to as between-package end faces). And at least a part of the contact controller surface 41 of the between-end-face cover 40 disposed between the package end faces is disposed closer to the center Q of the package P than the outer peripheral surface of the package P in the radial direction of the package P. In other words, at least a part of the contact controller surface 41 of the between-end-face cover 40 is In the radial direction of the package P It is located inside the outer peripheral surface of the package P. Therefore, it is possible to suppress the air on the outer diameter side of the package P from entering inside the end face cover 40, and effectively suppress the inflow of air between the package end faces. In addition, the position between the end faces is closer to the contact point C than the retracted position in the circumferential direction of the package P. In other words, the end face cover 40 is provided near the contact point C. Therefore, it is possible to suppress the inflow of air between the package end faces near the contact point C due to the collision between the air flowing along the outer peripheral surface of the package P (hereinafter referred to as the outer peripheral surface accompanying flow) and the contact controller 25. Therefore, it is possible to suppress the disturbance of the air flow existing between the package end faces. As a result, the air resistance applied to the end faces of the package P can be effectively suppressed, and thus the effect of reducing power consumption can be improved.

[0120] In addition, according to the configuration of the first modification, the following effects can be obtained. Immediately after the start of winding of the yarn Y, the diameter of the package P is very small, so the contact controller 25 and the bobbin B are close to each other in the radial direction of the package P. Therefore, depending on the positional relationship between the end face cover 40 and the contact controller 25, there is a risk that the end face cover 40 may interfere with the bobbin B immediately after the start of winding of the yarn Y. In this regard, according to the first modification, immediately after the start of winding of the yarn Y, by moving the end face cover 40 to the retracted position, it is possible to surely avoid the end face cover 40 from interfering with the bobbin B. Then, as the winding of the yarn Y onto each bobbin B progresses and the diameter of the package P increases and the distance between the contact controller 25 and the bobbin B becomes sufficiently large, the end face cover 40 can be moved to the position between the end faces. Thereby, while avoiding the end face cover 40 from interfering with the bobbin B, it is possible to suppress the inflow of air between the package end faces.

[0121] In the first modification, there may be one end face cover 40. That is, one end face cover 40 is may be arranged only in any one of the plurality of spaces 70.

[0122] Here, in the configuration of the first modified example, for example, the position between the end faces is preferably the position on the contact point C side with respect to an orthogonal straight line (not shown) that passes through the center Q of the package P and is orthogonal to the virtual line segment V. Also, in the configuration of the first modified example, the position between the end faces is preferably a position closer to the contact point C than the center Q of the package P when viewed from the axial direction. Further, in the configuration of the first modified example, when viewed from the axial direction, a part of the end face cover 40 located at the position between the end faces preferably overlaps with the virtual line segment V connecting the contact point C and the center Q of the package.

[0123] In addition, in the first modified example, it is preferable that the peripheral surface cover 50 is arranged. The definition of the peripheral surface cover 50 is the same as that described in the above embodiment.

[0124] (Other modified examples) In the above embodiment, the plurality of end face covers 40 are respectively arranged in the plurality of spaces 70 formed between the end faces of the packages P adjacent to each other in the front-rear direction. However, the end face cover 40 may be arranged in at least one of the plurality of spaces 70 formed between the end faces of the packages P adjacent to each other in the front-rear direction. For example, the end face cover 40 may be arranged only in any one of the plurality of spaces 70 formed between the end faces of the packages P adjacent to each other in the front-rear direction. When the end face cover 40 is arranged only in one space 70, for example, the moving mechanism 60 moves one end face cover 40 between the position between the end faces and the retracted position. Also, when the end face cover 40 is arranged only in one space 70, there is one rod-shaped member 61 connected to the end face cover 40.

[0125] In the above-described embodiment, for each of the spaces 70 formed between the package end faces, one end-face cover 40 is arranged. However, for each space 70, two or more end-face covers 40 may be arranged. For example, when two end-face covers 40 are arranged for one space 70, a total of 30 end-face covers 40 are arranged for 15 spaces 70. In this case, when viewed from the front-rear direction, at least a part of each end-face cover 40 is within the range from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package P with respect to the virtual line segment V connecting the contact point C and the center Q of the package P. Angle Further, at least a part of the contact controller surface 41 of each end-face cover 40 is arranged on the center Q side of the package P rather than the contact point C in the radial direction of the package P.

[0126] In the above-described embodiment, all of the contact controller surface 41 is arranged on the center Q side of the package P rather than the contact point C in the radial direction of the package P. However, a part of the contact controller surface 41 may be arranged on the center Q side of the package P rather than the contact point C in the radial direction of the package P.

[0127] In the above-described embodiment, no space is formed between the end faces of adjacent bobbins B. However, a space may be formed between the end faces of adjacent bobbins B.

[0128] In the above-described embodiment, all of the end-face cover 40 is provided so as to be within the range from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package P with respect to the virtual line segment V connecting the contact point C and the center Q of the package P. However, a part of the end-face cover 40 is within the range from 30 degrees upstream to 30 degrees downstream in the rotation direction of the package P with respect to the virtual line segment V connecting the contact point C and the center Q of the package P. Angle Further, at least a part of the contact controller surface 41 of each end-face cover 40 is arranged on the center Q side of the package P rather than the contact point C in the radial direction of the package P. Angle It may be provided so as to be within the range. In this case, the remaining portion of the cover 40 between the end faces is 30 degrees from the upstream side to the downstream side in the rotation direction of the package P with respect to the virtual line segment V connecting the contact point C and the center Q of the package P. Angle It may be provided outside the range.

[0129] In the above embodiment, when viewed from the front-rear direction, the bobbin surface 42 has a curved shape along the rotation direction of the package P. However, when viewed from the front-rear direction, the bobbin surface 42 may have a shape along a straight line, for example. Also, when viewed from the front-rear direction, the bobbin surface 42 may have a shape along a straight line that is bent at least once, for example.

[0130] In the above embodiment, when viewed from the front-rear direction, a part of the cover 40 between the end faces is provided on the upstream side in the rotation direction of the package P with respect to the virtual line segment V. However, all of the cover 40 between the end faces may be provided on the upstream side in the rotation direction of the package P with respect to the virtual line segment V. Also, in the above embodiment, when viewed from the front-rear direction, a part of the cover 40 between the end faces is provided on the downstream side in the rotation direction of the package P with respect to the virtual line segment V. However, all of the cover 40 between the end faces may be provided on the downstream side in the rotation direction of the package P with respect to the virtual line segment V.

[0131] In the above embodiment, when viewed from the front-rear direction, the cover 40 between the end faces is continuously provided over a range of 25 degrees or more in the rotation direction of the package P. Angle However, when viewed from the front-rear direction, the cover 40 between the end faces may be continuously provided over a range of less than 25 degrees in the rotation direction of the package P. Angle It may be provided continuously over a range of less than 25 degrees in the rotation direction of the package P.

[0132] In the above embodiment, the rod-shaped member 61 may be configured to be expandable and contractible in the radial direction of the package P. Here, each end-face cover 40 in the retracted position is disposed on the inner side in the radial direction of the package P than the circumferential surface cover 50 (see FIG. 6). For this reason, when the end-face cover 40 is in the retracted position, by shortening the rod-shaped member 61 and bringing the end-face cover 40 closer to the circumferential surface cover 50, the end-face cover 40 can be moved as far away from the bobbin B as possible. Therefore, the risk of the end-face cover 40 interfering with the bobbin B can be reduced. In addition, when the end-face cover 40 is in the position between the end faces, the end-face cover 40 can be expanded and contracted in the radial direction of the package P. Thereby, the end-face cover 40 can be disposed at a position where the inflow of air between the package end faces in the radial direction of the package P can be most effectively suppressed.

[0133] In the above embodiment, the control unit 26 calculates the diameters of the plurality of packages P based on the information regarding the size of the diameter of the package P detected by the sensor 90. Then, when the diameters of the plurality of packages P reach a predetermined size, the control unit 26 controls the moving mechanism 60 to move each end-face cover 40 from the retracted position to the position between the end faces. However, the control unit 26 may control the moving mechanism 60 to move each end-face cover 40 from the retracted position to the position between the end faces at a predetermined timing calculated based on the winding elapsed time elapsed since the start of winding of the yarn Y around the bobbin B. According to this, the end-face cover 40 can be moved to the position between the end faces at a predetermined timing when the diameter of the package P becomes a size that can sufficiently secure the distance between the contact controller 25 and the bobbin B. Thereby, it is possible to more reliably avoid the end-face cover 40 from interfering with the bobbin B.

[0134] Further, in the above embodiment, the control unit 26 may determine the timing to move the cover 40 between the end faces from the retracted position to the position between the end faces based on the signal input by the operator. Specifically described, for example, an operating unit (not shown) is arranged on the bobbin winder 4. Then, at the timing of moving the cover 40 between the end faces from the retracted position to the position between the end faces, when the operator operates the operating unit, an operation signal is transmitted to the control unit 26. The control unit 26 moves the cover 40 between the end faces from the retracted position to the position between the end faces based on the operation signal transmitted from the operating unit.

[0135] The bobbin winder 4 of the above embodiment has a moving mechanism 60 that moves a plurality of covers 40 between the end faces between the position between the end faces and the retracted position. However, the bobbin winder 4 may not have the moving mechanism 60. In this case, each cover 40 between the end faces is fixedly arranged at the position between the end faces. In this case, it is preferable that a space is formed between the end faces of the adjacent bobbins B. By doing so, at least a part of the cover 40 between the end faces can be arranged in the space formed between the end faces of the adjacent bobbins B.

[0136] In the above embodiment, the bobbin winder 4 is provided with a cover 40 between the end faces and a circumferential surface cover 50. However, the circumferential surface cover 50 may not be provided in the bobbin winder 4 according to the present invention.

[0137] In the above embodiment, the circumferential surface cover 50 is provided on the downstream side in the rotation direction of the package P from the contact point C. However, the circumferential surface cover 50 may be provided on the upstream side in the rotation direction of the package P from the contact point C.

[0138] In the above embodiment, the circumferential surface cover 50 is provided along the circumferential direction of the package P when the package diameter becomes the full winding diameter. However, the circumferential surface cover 50 only needs to be provided so as to partially surround the outer peripheral surfaces of a plurality of packages P in the circumferential direction of the package P, and is not limited to such a configuration. For example, when viewed from the front-rear direction, the circumferential surface cover 50 may have a shape along a straight line or a curve, for example. Also, when viewed from the front-rear direction, the circumferential surface cover 50 may have a shape along a straight line that is bent at least once, for example. Note that "the circumferential surface cover 50 partially surrounds the outer peripheral surfaces of a plurality of packages P in the circumferential direction of the package P" means that the outer peripheral surfaces of a plurality of packages P exist inside the inner surface of the circumferential surface cover 50 in the radial direction of the package P.

[0139] In the above embodiment, the circumferential surface cover 50 is attached to the frame body 28 via the connecting member 80. However, the circumferential surface cover 50 may be attached to the roller support member 30 via the connecting member 80. Specifically, for example, the circumferential surface cover 50 may be attached to the arm portion 32 of the roller support member 30 via the connecting member 80. In this case, the roller support member 30 corresponds to the support member of the present invention. Also, the circumferential surface cover 50 may be directly attached to the frame body 28 or the arm portion 32. Furthermore, the circumferential surface cover 50 may be attached to a member different from the frame body 28 or the arm portion 32.

[0140] In the above embodiment, each end-face cover 40 is attached to the circumferential surface cover 50 via the rod-shaped member 61. However, each end-face cover 40 may be attached to the circumferential surface cover 50 by a member different from the rod-shaped member 61.

[0141] In the above-described embodiment, the cover 40 between each end face is indirectly attached to the circumferential surface cover 50. However, the cover 40 between each end face may be directly attached to the circumferential surface cover 50. Further, the cover 40 between each end face may be attached to a member different from the circumferential surface cover 50. For example, as shown in FIG. 10, the cover 40 between each end face may be directly or indirectly attached to a wall member 92 that extends upward from the floor surface and extends in the front-rear direction. In FIG. 10, the cover 40 between each end face is attached to the upper end of the wall member 92 via an arm member 93. Furthermore, the cover 40 between each end face may be directly or indirectly attached to the frame body 28 or the arm portion 32.

[0142] In the above-described embodiment, the sliding of the rod-shaped member 61 along the rail 62 is driven by the motor 63 for the moving mechanism. However, the sliding of the rod-shaped member 61 along the rail 62 may be driven by an air cylinder.

[0143] In the above-described embodiment, the moving mechanism 60 includes a plurality of rod-shaped members 61 and rails 62. However, the moving mechanism 60It is not limited to such a configuration. Instead of the moving mechanism 60, for example, as shown in FIG. 10, a moving mechanism 100 may be provided. The moving mechanism 100 includes a wall member 92 and a plurality of arm members 93 extending in a direction orthogonal to the front-rear direction from the upper end of the wall member 92. The base end portion of each arm member 93 is rotatably supported at the upper end of the wall member 92 via a swing shaft 94. The tip end portion of each arm member 93 is connected to the cover 40 between end faces via a rotation shaft 95. The moving mechanism 100 can move each cover 40 between the position between end faces and the retracted position (see the two-dot chain line in FIG. 10) by swinging each arm member 93 around the swing shaft 94 and rotating the cover 40 between end faces around the rotation shaft 95. Specifically, first, the moving mechanism 100 swings the arm member 93 counterclockwise around the swing shaft 94 (see the solid arrow in FIG. 10). Subsequently, the moving mechanism 100 rotates the cover 40 between end faces counterclockwise around the rotation shaft 95 (see the solid arrow in FIG. 10). Thereby, the cover 40 between end faces can be moved from the position between end faces to the retracted position. The swing of the arm member 93 and the rotation of the cover 40 between end faces are driven by, for example, a motor (not shown).

[0144] In the above embodiment, the driving of the moving mechanism 60 is controlled by the control unit 26. That is, the moving mechanism 60 is automatically controlled. However, the moving mechanism 60 may be manually operated by an operator.

[0145] In the above embodiment, the winding machine 4 has two bobbin holders 24. However, the winding machine 4 may have a configuration having one bobbin holder 24. In the case of the configuration of the winding machine having one bobbin holder 24, when replacing the bobbin B with respect to the bobbin holder 24, for example, the contact controller 25 may be configured to move to a position separated from the package P. Alternatively, one bobbin holder 24 may be configured to move to a position where the package P mounted on the bobbin holder 24 and the contact controller 25 are separated.

Explanation of Reference Numerals

[0146] 4 Thread take-up machine 23 Turret 24 Bobbin holder 25 Contact controller 26 Control unit 28 Frame (support member) 40 End face cover 41 Contact controller surface 42 Bobbin surface 50 Peripheral surface cover 60 Moving mechanism 61 Rod-shaped member (connection member) 62 Rail 70 Space 90 Sensor B Bobbin C Contact E End face P Package Q Center S Gap V Virtual line segment Y Thread

Claims

1. A bobbin holder in which a plurality of bobbins around which a plurality of yarns are respectively wound are arranged side by side in the axial direction, the bobbins extending in a predetermined axial direction; A contact roller extending along the axial direction and contacting the outer peripheral surfaces of a plurality of packages formed by winding the plurality of yarns around the plurality of bobbins respectively; An end-face cover disposed in at least one of a plurality of spaces formed between end faces of the packages adjacent to each other in the axial direction; comprising: when viewed from the axial direction, the end-face cover has a contact-roller surface facing the contact-roller side; when viewed from the axial direction, at least a part of the contact-roller surface is disposed closer to the center of the package than the outer peripheral surface of the package in the radial direction of the package; when viewed from the axial direction, at least a part of the contact-roller surface is provided so as to fall within a range from 30 degrees upstream to 30 degrees downstream in the rotational direction of the package with respect to a virtual line segment connecting the contact point between the package and the contact roller and the center of the package. A yarn winding machine characterized by this.

2. The yarn winding machine according to claim 1, wherein the end-face covers are respectively disposed in the plurality of spaces.

3. The yarn winding machine according to claim 1 or 2, wherein when viewed from the axial direction, at least a part of the end-face cover is provided on the upstream side in the rotational direction of the package with respect to the virtual line segment.

4. The yarn winding machine according to any one of claims 1 to 3, wherein when viewed from the axial direction, at least a part of the end-face cover is provided on the downstream side in the rotational direction of the package with respect to the virtual line segment.

5. when viewed from the axial direction, the end-face cover has a bobbin surface facing the center side of the package; The yarn winding machine according to any one of claims 1 to 4, wherein when viewed from the axial direction, the bobbin surface has a curved shape along the rotational direction of the package.

6. The yarn winding machine according to any one of claims 1 to 5, wherein in the axial direction, the size of the gap between the end-face cover and the package is 3 to 5 mm.

7. The winding machine according to any one of claims 1 to 6, characterized in that the distance between the contact roller surface and the contact point is 5 to 10 mm when viewed from the axial direction.

8. The winding machine according to any one of claims 1 to 7, characterized in that the end face cover is continuously provided over a range of 25 degrees or more in the rotational direction of the package when viewed from the axial direction.

9. The winding machine according to claim 8, characterized in that at least a part of the end face cover is continuously provided over a range from 20 degrees upstream to 5 degrees downstream in the rotational direction of the package with reference to the virtual line segment when viewed from the axial direction.

10. The winding machine according to any one of claims 1 to 9, characterized by comprising a moving mechanism for moving the end face cover between an end face position where at least a part of the end face cover is disposed in the space between the end faces of the adjacent packages and a retracted position which is a position outside the end face position in the radial direction of the package.

11. A sensor for detecting information regarding the diameters of the plurality of packages; A control unit for controlling the drive of the moving mechanism; Comprising: The control unit: Calculates the diameters of the plurality of packages based on the information regarding the diameters of the plurality of packages; The winding machine according to claim 10, characterized in that the control unit controls the moving mechanism to move the end face cover from the retracted position to the end face position when the diameters of the plurality of packages reach a predetermined size.

12. Comprising a control unit for controlling the drive of the moving mechanism, The winding machine according to claim 10, characterized in that the control unit controls the moving mechanism to move the end face cover from the retracted position to the end face position at a predetermined timing calculated based on the winding elapsed time elapsed since the start of winding of the yarn onto the bobbin.

13. The winding machine according to any one of claims 1 to 12, characterized by comprising a peripheral surface cover provided so as to partially surround the outer peripheral surfaces of the plurality of packages in the circumferential direction of the package.

14. The winding machine according to claim 13, characterized in that the peripheral surface cover is provided on the downstream side in the rotational direction of the package with respect to the contact point.

15. Comprising a support member for supporting the contact roller The winding machine according to claim 13 or 14, wherein the circumferential surface cover is attached directly or indirectly to the support member.

16. The winding machine according to claim 15, wherein the end face cover is attached directly or indirectly to the circumferential surface cover.

17. The winding machine is provided with a moving mechanism for moving the end face cover between an end face position where at least a part of the end face cover is disposed in a space between end faces of adjacent packages and a retracted position which is a position radially outside the packages relative to the end face position, The moving mechanism has a connecting member that moves along the extending direction of the circumferential surface cover when viewed in the axial direction, The connecting member is connected to the circumferential surface cover and the end face cover, The winding machine according to claim 16, wherein the moving mechanism moves the end face cover between the end face position and the retracted position by moving the connecting member along the extending direction of the circumferential surface cover.

18. The winding machine according to claim 17, wherein the connecting member is expandable and contractible in the radial direction of the package.

19. Two said bobbin holders, A rotatable turret for supporting each said bobbin holder, Comprising, Each said bobbin holder is rotatably movable between a winding position where winding of yarn onto the bobbin is performed and a standby position different from the winding position by rotation of the turret, The winding machine according to any one of claims 13 to 18, wherein when viewed in the axial direction, the circumferential surface cover is disposed outside the rotation orbits of the plurality of packages that rotate together with the bobbin holder.

20. A bobbin holder extending in a predetermined axial direction and having a plurality of bobbins on which a plurality of yarns are respectively wound arranged side by side in the axial direction, A contact roller extending along the axial direction and contacting an outer circumferential surface of a plurality of packages formed by winding the plurality of yarns onto the plurality of bobbins respectively, An end face cover disposed in at least one of a plurality of spaces formed between end faces of the packages adjacent to each other in the axial direction, Comprising, The end face cover has a contact roller surface facing the contact roller side when viewed in the axial direction, When viewed from the axial direction, at least a part of the contact roller surface is disposed closer to the center of the package than the outer peripheral surface of the package in the radial direction of the package. The mechanism further includes a moving mechanism that moves the end face cover between an end face position where at least a part of the end face cover is disposed in a space between end faces of adjacent packages and a retracted position that is located radially outside of the package relative to the end face position. The winding machine is characterized in that the end face position is closer to the contact point between the package and the contact roller than the retracted position in the circumferential direction of the package.

Images