Yarn winder

Abstract

Provided is a yarn winder capable of reducing local wear of a fulcrum guide and reducing the cost for the same. A plurality of fulcrum guides (16) are configured to have a roller shape with a central axis and to hook a yarn (Y) on an outer peripheral surface thereof. One or more of the plurality of fulcrum guides (16) is configured to be freely rotatable about the central axis and is provided with a switching mechanism (30) that prohibits rotation of the one or more fulcrum guides (16) during yarn winding and that releases the prohibition of rotation of the one or more fulcrum guides (16) at other times.

Description

Technical Field

[0001] This invention relates to a wire winding machine, which winds multiple wires onto multiple bobbins mounted on the winding shaft while simultaneously moving laterally with multiple fulcrum guides arranged axially on the winding shaft. Background Technology

[0002] A type of yarn winding machine has been known for winding multiple yarns spun from a spinning device onto multiple bobbins mounted on a winding shaft while moving them laterally. In this type of yarn winding machine, multiple fulcrum guides are arranged along the axial direction of the winding shaft to serve as fulcrums for the lateral movement of the yarns. For example, in Patent Documents 1 and 2, a roller-shaped fulcrum guide (a guide roller in Patent Document 2) with a central axis extending in a direction orthogonal to the axial direction of the winding shaft is provided, and the yarn is hooked on the outer circumferential surface of the fulcrum guide. In Patent Document 1, the fulcrum guide is configured such that it does not rotate around the central axis during yarn winding. Furthermore, in Patent Document 2, the fulcrum guide is a roller capable of freely rotating around the central axis.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2013-23787

[0004] Patent Document 2: Japanese Patent Publication No. 2008-531438

[0005] As in Patent Document 1, when the fulcrum guide does not rotate during yarn winding, localized wear of the fulcrum guide easily develops because the high-speed traveling yarn continuously contacts the same portion of the outer circumferential surface of the fulcrum guide. As a result, the contact state between the yarn and the fulcrum guide changes, potentially leading to a decrease in yarn quality. In Patent Document 1, the fulcrum guide is configured to be rotated using a motor, thereby changing the contact position with the yarn. However, this requires a drive unit such as a motor to rotate the fulcrum guide, resulting in increased costs.

[0006] On the other hand, the fulcrum guide in Patent Document 2 is configured to rotate freely. Therefore, during yarn winding, the fulcrum guide always rotates due to friction with the yarn, which can suppress localized wear. However, the fulcrum guide is subjected to high-speed rotation, so the bearings of the fulcrum guide are prone to premature failure. Consequently, the increased cost associated with bearing maintenance becomes a problem. Summary of the Invention

[0007] In view of the above issues, the object of the present invention is to provide a wire winding machine that can reduce local wear of the fulcrum guide and reduce the cost of using it.

[0008] This invention relates to a yarn winding machine, which winds multiple yarns onto multiple bobbins mounted on the winding shaft while simultaneously moving laterally around multiple fulcrum guides arranged axially along the winding shaft. The machine is characterized in that the multiple fulcrum guides are configured as rollers with a central shaft, hooking the yarns onto their outer circumferential surfaces. One or more of the multiple fulcrum guides are configured to rotate freely around the central shaft. A switching mechanism is provided to prevent the rotation of one or more fulcrum guides during yarn winding and to release the rotation restriction when the yarn is not being wound.

[0009] According to the present invention, during yarn winding, a switching mechanism prevents the rotation of one or more fulcrum guides that are configured to rotate freely. That is, the fulcrum guides do not rotate at high speed due to yarn movement, thus eliminating the need for bearings on the fulcrum guides. Even if bearings are provided, they are not subjected to high-speed rotation for extended periods, thus preventing premature breakage. This avoids the increased costs associated with bearing maintenance. Furthermore, in the present invention, the rotation restriction of the fulcrum guides is lifted by the switching mechanism when not winding the yarn. Therefore, if yarn loading operations are performed on the fulcrum guides at this time, the tension of the yarn can easily rotate the fulcrum guides when they come into contact with the yarn. This reduces localized wear on the fulcrum guides, eliminating the need for a drive unit such as a motor to rotate them. As described above, according to the present invention, localized wear on the fulcrum guides can be reduced, and the costs associated with this are also reduced. Additionally, since it is not necessary to rotate fulcrum guides where localized wear is not a significant issue, such fulcrum guides do not need to be configured to rotate freely.

[0010] In this invention, the above-mentioned one or more fulcrum guides may include two of the above-mentioned fulcrum guides at both ends of the axial direction.

[0011] In a typical wire winding machine, among the multiple fulcrum guides arranged axially along the winding shaft, the closer the fulcrum guide is to the end, the larger the winding angle of the wire. Therefore, the surface pressure exerted on the wire is greater, and wear is more likely to become a problem. Thus, by configuring at least two fulcrum guides at both ends to be able to rotate freely, the problem of localized wear of the fulcrum guides can be largely eliminated.

[0012] In this invention, the above-mentioned one or more fulcrum guides may include all of the above-mentioned fulcrum guides.

[0013] In this way, local wear can be reliably reduced for all fulcrum wire guides.

[0014] In this invention, the switching mechanism may also include: a gear portion formed on the fulcrum guide or a retaining member that holds the fulcrum guide; an engaging member that engages with the gear portion during yarn winding to prevent the gear portion from rotating; and an engaging release member that releases the engagement between the engaging member and the gear portion when the yarn is not being wound.

[0015] With this configuration, the engagement between the engagement component and the gear part is released by the engagement release component, thereby allowing the fulcrum wire guide to be switched to a state where it can rotate freely.

[0016] In this invention, a moving mechanism is provided that moves the plurality of fulcrum guides between the winding position during wire winding and the wire hanging position during wire hanging operation. When the plurality of fulcrum guides are in the wire hanging position, the engagement release member maintains the state in which the engagement between the engagement member and the gear is released.

[0017] Based on this configuration, the fulcrum guide becomes a freely rotatable state during the wire-hanging operation, and the fulcrum guide can rotate when the wire is hooked onto it.

[0018] In this invention, the moving mechanism may also include: a plurality of sliders supporting the plurality of fulcrum wire guides; a guide rail on which the plurality of sliders are slidably mounted; and a drive unit that moves the plurality of sliders along the guide rail.

[0019] According to this moving mechanism, the fulcrum wire guide can be moved simply by moving the slider along the guide rail.

[0020] In this invention, when the plurality of fulcrum guides move from the winding position to the hanging position, the sliders that are adjacent to each other in the long side direction of the guide rail approach each other.

[0021] With this configuration, when multiple fulcrum wire guides are in the wire-hanging position, the multiple fulcrum wire guides are assembled in a close manner, thus making the wire-hanging operation easier.

[0022] In this invention, the engaging member may have a protrusion that protrudes from the slider when the plurality of fulcrum guides are in the winding position. When the plurality of fulcrum guides move from the winding position to the wire-hanging position, the slider adjacent to the engaging member presses the protrusion, thereby releasing the engagement between the engaging member and the gear portion.

[0023] With this configuration, the adjacent sliders function as engagement release components, so there is no need to add new engagement release components, thereby suppressing the increase in the number of components.

[0024] In this invention, the aforementioned engagement release component may be fixed to the aforementioned guide rail or fixing component, and the fixing component may directly or indirectly fix the aforementioned guide rail. When the aforementioned plurality of fulcrum wire guides move from the aforementioned winding position to the aforementioned wire hanging position, the aforementioned engagement release component presses the aforementioned engagement component, thereby releasing the engagement between the aforementioned engagement component and the aforementioned gear portion.

[0025] With this configuration, a common engagement release component can be provided for multiple pivot wire guides, thus eliminating the need to provide an engagement release component for each pivot wire guide and reducing the number of engagement release components.

[0026] In this invention, a force-applying member may be provided to apply force to the engagement member in the direction in which the engagement member engages with the gear portion.

[0027] If such a force-applying component is provided, the rotation of the fulcrum guide can be reliably prevented by the locking component during yarn winding. Attached Figure Description

[0028] Figure 1 This is a side view of the spinning traction device involved in this embodiment.

[0029] Figure 2 This is a side view of the guide unit.

[0030] Figure 3 This is a diagram illustrating the operation of the switching mechanism in the first embodiment.

[0031] Figure 4 This is a cross-sectional view showing the switching mechanism of the first embodiment.

[0032] Figure 5 This is a diagram illustrating the operation of the switching mechanism in the second embodiment.

[0033] Figure 6 This is a diagram showing the configuration of the engagement / disengagement component in the second embodiment.

[0034] Explanation of symbols

[0035] 10: Thread winding machine

[0036] 13: Tube support (winding shaft)

[0037] 16: Pivot wire guide

[0038] 20: Mobile organization

[0039] 21: Slider

[0040] 22: Guide rail

[0041] 23: Cylinder (Drive Unit)

[0042] 30, 40: Switching mechanism

[0043] 32, 42: Retaining components

[0044] 32a, 42a: Gear section

[0045] 33, 43: Engaging components

[0046] 33a: Protrusion

[0047] 34, 46: Springs (force-applying components)

[0048] 44: Engagement / Disengagement Component

[0049] B: Cylindrical tube

[0050] Y: Thread Detailed Implementation

[0051] Hereinafter, with reference to the accompanying drawings, embodiments of applying the yarn winding machine of the present invention to a spinning traction device will be described.

[0052] (Spinning traction device)

[0053] Figure 1 This is a side view of the spinning traction device according to this embodiment. In this specification, [the following will be described]. Figure 1 The directions shown are defined as front, back, left, right, up, and down of the spinning traction device.

[0054] The spinning traction device 1 is a device for drawing multiple (16 in this embodiment) filaments Y spun from the spinning device 2, and includes guide rollers 3 and 4 and a filament winding machine 10. The spinning device 2 is positioned above the spinning traction device 1 and spins multiple filaments Y made of synthetic resin. The guide rollers 3 and 4 are positioned below the spinning device 2 and are driven to rotate by a motor (not shown). The multiple filaments Y spun from the spinning device 2 are conveyed to the filament winding machine 10 via the guide rollers 3 and 4.

[0055] The thread winding machine 10 is positioned below the guide rollers 3 and 4. The thread winding machine 10 has two bobbin supports 13 (corresponding to the winding shafts of the present invention) cantilevered by a turntable 12 built into the machine body 11. The bobbin supports 13 extend in the front-rear direction (corresponding to the axial direction of the present invention), and their rear ends are supported by the turntable 12. Multiple bobbins B can be mounted on the bobbin supports 13 in the front-rear direction. The bobbin supports 13 are driven to rotate about an axis by a motor (not shown).

[0056] The turntable 12 is a circular plate-shaped component with a rotation axis parallel to the front-rear direction. Two bobbin supports 13 are mounted at upper and lower positions, 180 degrees apart in the circumferential direction. By rotating the turntable 12, the two bobbin supports 13 move between the upper and lower positions. In the upper position of the bobbin support 13, multiple threads Y are wound onto multiple bobbins B to form multiple rolls P. Conversely, in the lower position of the bobbin support 13, the multiple rolls P are retrieved, and new multiple bobbins B are installed.

[0057] The thread winding machine 10 has a support frame 14 that is cantilevered and supported on the machine body 11. The rear end of the support frame 14 is supported by the machine body 11. A guide unit 15 is disposed above the support frame 14. In the guide unit 15, a number of fulcrum guides 16, the same as the number of threads Y (16 in this embodiment), are arranged in the front-back direction. On the support frame 14, a number of traverse devices 17, the same as the number of threads Y, are arranged in the front-back direction. The traverse devices 17 use the corresponding fulcrum guides 16 as fulcrums to traverse the threads Y in the front-back direction.

[0058] Below the support frame 14, a contact roller 18 is disposed, which is rotatably supported by the support frame 14. The contact roller 18 contacts the outer peripheral surfaces of a plurality of packages P held by the bobbin support 13 located above. During yarn winding, the contact roller 18 rotates while applying a predetermined contact pressure to the packages P, thereby shaping the package P.

[0059] (Guiding Unit)

[0060] The structure of the guiding unit 15 will be explained. Figure 2 This is a side view of the guide unit 15. Figure 2 Figure (a) shows the state of the multiple pivot guides 16 in the winding position. Figure 2 Figure (b) shows the state of the multiple fulcrum wire guides 16 in the wire-hanging position. The winding position is the position of the multiple fulcrum wire guides 16 when winding multiple strands Y into multiple bobbins B. The wire-hanging position is the position of the multiple fulcrum wire guides 16 when hooking multiple strands Y onto the multiple fulcrum wire guides 16. The multiple fulcrum wire guides 16 are configured to be movable between the winding position and the wire-hanging position by means of the moving mechanism 20.

[0061] The guiding unit 15 is configured with a plurality of pivot wire guides 16 and a moving mechanism 20. The moving mechanism 20 has a plurality of sliders 21, a guide rail 22, and a cylinder 23 (corresponding to the drive unit of the present invention). The sliders 21 are provided in the same number as the pivot wire guides 16, supporting the pivot wire guides 16 so that they can rotate.

[0062] The pivot wire guide 16 protrudes to the right from the slider 21 (see reference). Figure 5 It has a roller-shaped component that extends a central axis in a direction orthogonal to the axial direction of the bobbin support 13 (left-right direction). The yarn Y is hooked on the outer peripheral surface of the fulcrum guide 16, and the yarn Y travels in contact with the outer peripheral surface of the fulcrum guide 16 during yarn winding. All of the fulcrum guides 16 are configured to be able to rotate freely about the central axis.

[0063] The guide rail 22 is a component extending along the front-back direction (corresponding to the long side direction of the invention) and is fixed to the support frame 14 via a bracket (not shown). Multiple sliders 21 are slidably mounted on the guide rail 22 in a front-back direction arrangement. Adjacent sliders 21 in the front-back direction are connected to each other by a belt (not shown). The rod 23a of the cylinder 23 is connected to the slider 21 on the farthest side.

[0064] like Figure 2 As shown in Figure (a), when the rod 23a of cylinder 23 retracts, the multiple sliders 21 are arranged in a separated state in the front-back direction. That is, the multiple fulcrum guides 16 are also arranged in a separated state in the front-back direction. The position of the multiple fulcrum guides 16 at this time is the winding position. When the multiple fulcrum guides 16 are in the winding position, the contact points between the yarn Y and each fulcrum guide 16, that is, the traverse fulcrums of the yarn Y, are equally spaced.

[0065] The thread channel, which distributes multiple threads Y from the guide roller 4 to the multiple pivot guides 16 located at the winding position, is symmetrical with respect to the vertical plane passing through the center of the multiple pivot guides 16 in the front-to-back direction. The first half of the eight threads Y are hooked on the front side of the pivot guides 16, while the second half of the eight threads Y are hooked on the rear side of the pivot guides 16. Furthermore, the closer the pivot guide 16 is to the end, the larger the winding angle of the threads Y. As a result, the surface pressure of the threads Y is greater, and therefore, wear is more likely to occur.

[0066] During the wire-coating operation on the multiple-pivot wire guides 16, the cylinder 23 is driven to extend the rod 23a. The rearmost slider 21, connected to the rod 23a, then moves forward. Next, the rearmost slider 21 abuts against its adjacent slider 21 in front of it and presses forward; similarly, each slider 21 repeats this action of abutting against its adjacent slider 21 in front of it and pressing forward. Furthermore, "abutting" here includes not only direct contact between the sliders 21 but also indirect contact between them via other components.

[0067] When the foremost slider 21 abuts against a limiter (not shown) located at the front end of the guide rail 22, the cylinder 23 stops. As a result, all sliders 21 are assembled in a state close to the front end of the guide rail 22. At this time, the positions of the multiple fulcrum wire guides 16 are the wire-hanging positions. The multiple fulcrum wire guides 16 located at the wire-hanging positions are assembled at the front end of the guide rail 22 in a state close to each other, thus facilitating wire-hanging operations on the multiple fulcrum wire guides 16. Alternatively, the front end of the guide rail 22 may function as a limiter instead of the limiter described above, or the cylinder 23 rod 23a may stop by abutting against the limiter.

[0068] After the wire-hanging operation is completed, when the cylinder 23 is driven to retract the rod 23a, the rearmost slider 21 moves backward. When the strip connecting the rearmost slider 21 to its adjacent front slider 21 is fully extended, the adjacent front slider 21 is pulled backward. Subsequently, each slider 21 is similarly pulled backward, thereby returning the multiple pivot wire guides 16 to their original positions. Figure 2 The winding position is shown in Figure (a). Furthermore, the drive unit that moves the slider 21 is not limited to the cylinder 23, but may also be other actuators such as a motor.

[0069] (First embodiment of the rotating mechanism)

[0070] The first embodiment of the rotating mechanism will be described. Figure 3 This is a diagram illustrating the operation of the switching mechanism 30 in the first embodiment. Figure 4 This is a cross-sectional view of the switching mechanism 30 of the first embodiment, and a cross-sectional view of the center of the fulcrum wire guide 16. Figure 3 Figure (a) shows the state when the pivot guide 16 is in the winding position. Figure 3 Figure (b) shows the state of the fulcrum guide 16 when it is in the wire hanging position. Figure 3 The pivot guide 16 shown represents the foremost pivot guide 16.

[0071] In this embodiment, a switching device 31 is provided on each slider 21, and the assembly of the switching devices 31 provided on each slider 21 is a switching mechanism 30. The switching device 31 is configured to have: a gear portion 32a formed on the holding member 32 of the holding fulcrum guide 16; an engaging member 33 provided on the slider 21; and an adjacent slider 21 that functions as an engaging release member of the present invention.

[0072] like Figure 4As shown, the pivot wire guide 16 is fixed to the retaining member 32 and can rotate integrally with the retaining member 32. The retaining member 32 is mounted in a mounting hole 21a formed on the surface (right surface) of the slider 21. A gear portion 32a is formed in the retaining member 32 on the back side (left side) of the surface of the slider 21. The frictional force between the retaining member 32 and the slider 21 is set to a small value that allows the retaining member 32 to rotate freely around the central axis of the pivot wire guide 16. Thus, the pivot wire guide 16 can rotate freely around the central axis. In addition, a bearing can also be provided in the mounting hole 21a to facilitate smoother rotation of the retaining member 32.

[0073] The engaging member 33 is a component that prevents the gear part 32a from rotating by engaging with it. The engaging member 33 is an integrally formed component consisting of a protrusion 33a, an engaging part 33b, and a connecting part 33c. The protrusion 33a is a portion that protrudes rearward from the slider 21 when the fulcrum guide 16 is in the winding position. The engaging part 33b is a portion that engages with the gear part 32a to prevent its rotation. The connecting part 33c is a portion that connects the protrusion 33a and the engaging part 33b. Furthermore, the protrusion 33a does not necessarily have to protrude rearward; it can protrude in other directions as long as it is positioned to be pressed down by the adjacent slider 21.

[0074] A guide groove 21b extending in the front-rear direction is formed on the surface of the slider 21. A portion of the protrusion 33a and the connecting portion 33c (the portion extending in the front-rear direction) can slidably engage with the guide groove 21b. Thus, the engaging member 33 can move in the front-rear direction along the guide groove 21b. The remaining portions of the engaging portion 33b and the connecting portion 33c are disposed on the back side of the slider 21.

[0075] The engaging member 33 is forced backward by the spring 34, i.e., in the direction in which the protrusion 33a protrudes from the slider 21. The spring 34 (corresponding to the force-applying member of the present invention) also functions as a member that applies force to the engaging member 33 in the direction in which the engaging portion 33b engages with the gear portion 32a.

[0076] Figure 3 The aforementioned fulcrum guide 16 is used to guide the yarn as it travels along the Y direction during yarn winding. Figure 3 A torque is applied in the counterclockwise direction. During yarn winding, the rotation of the fulcrum guide 16 is prohibited by the switching mechanism 30, so that the fulcrum guide 16 does not rotate due to this torque. Specifically, as... Figure 3 As shown in Figure (a), the spring 34 applies force to the locking member 33 backward, thereby engaging the locking part 33b with the gear part 32a and preventing the rotation of the fulcrum guide wire 16.

[0077] As the fulcrum guide 16 moves from the take-up position to the wire-hanging position, the protrusion 33a of the engaging member 33 is pressed forward by the adjacent slider 21. Consequently, the engaging member 33 moves forward, the engaging portion 33b disengages from the gear portion 32a, and the engagement between the engaging member 33 and the gear portion 32a is released. As a result, when the fulcrum guide 16 is in the wire-hanging position, such as Figure 3 As shown in Figure (b), the fulcrum guide 16 is in a state where it can rotate freely. Therefore, when the wire is wound onto the fulcrum guide 16, the wire Y contacts the outer peripheral surface of the fulcrum guide 16, thereby allowing the fulcrum guide 16 to rotate easily using the tension of the wire Y. As a result, the position where the wire Y contacts the fulcrum guide 16 during the next wire winding can be changed from the position during the previous wire winding, thus suppressing the development of localized wear on the fulcrum guide 16.

[0078] When the wire-hanging operation of the fulcrum guide 16 is completed and the fulcrum guide 16 returns from the wire-hanging position to the winding position, the adjacent slider 21 disengages. Then, the engaging member 33 moves rearward under the force applied by the spring 34, the protrusion 33a protrudes rearward from the slider 21, and the engaging part 33b engages with the gear part 32a. When the fulcrum guide 16 returns to the winding position and the winding of the wire Y begins, the travel of the wire Y applies a counterclockwise torque to the fulcrum guide 16. However, since the engaging member 33 prevents the rotation of the fulcrum guide 16, the fulcrum guide 16 will not rotate.

[0079] In addition, in this embodiment, a portion including the gear portion 32a and the engaging portion 33b of the engaging member 33 is provided on the back side of the slider 21, but they can also be provided on the surface side of the slider 21. Furthermore, regarding the rearmost fulcrum wire guide 16, since there is no adjacent slider 21 behind it, the configuration of the engaging member 33 can also be the same as... Figure 3 The configuration shown is reversed. In this case, the adjacent slider 21 in front functions as an engagement / disengagement component.

[0080] (Effects of the first embodiment)

[0081] The effects of this embodiment will now be explained. In this embodiment, the rotation of one or more fulcrum guides 16, which are configured to rotate freely, is prohibited by the switching mechanism 30 during yarn winding. That is, the fulcrum guides 16 do not rotate at high speed due to the movement of the yarn Y, so there is no need for bearings on the fulcrum guides 16, and even if bearings are provided, they are not subjected to high-speed rotation for a long time, thus preventing premature breakage. As a result, the increased costs associated with bearing maintenance can be avoided. Furthermore, in this embodiment, the prohibition on rotation of the fulcrum guides 16 is lifted by the switching mechanism 30 when the yarn is not being wound. Therefore, if a yarn loading operation is performed on the fulcrum guides 16 at this time, the tension of the yarn Y can be used to easily rotate the fulcrum guides 16 when the yarn Y comes into contact with the fulcrum guides 16. Therefore, local wear on the fulcrum guides 16 can be reduced, and a drive unit such as a motor for rotating the fulcrum guides 16 is not required. As described above, according to this embodiment, localized wear of the fulcrum guide 16 can be reduced, and the cost of using it can be reduced.

[0082] In this embodiment, the aforementioned one or more fulcrum guides 16 include two fulcrum guides 16 at both axial ends. In a typical wire winding machine 10, among the multiple fulcrum guides 16 arranged axially on the bobbin support 13, the closer the fulcrum guide is to the end, the larger the winding angle of the wire Y. Therefore, the surface pressure exerted on the wire Y is greater, and wear is more likely to become a problem. Thus, if at least the two fulcrum guides 16 at both ends are configured to be able to rotate freely, the problem of localized wear of the fulcrum guides 16 can be largely eliminated.

[0083] In this embodiment, the aforementioned one or more pivot wire guides 16 include all pivot wire guides 16. In this way, local wear can be reliably reduced for all pivot wire guides 16.

[0084] In this embodiment, the switching mechanism 30 includes: a gear portion 32a formed in the holding member 32 of the holding fulcrum guide 16; an engaging member 33 that engages with the gear portion 32a during yarn winding to prevent the gear portion 32a from rotating; and an engaging release member (adjacent slider 21) that releases the engagement between the engaging member 33 and the gear portion 32a when the yarn is not being wound. With this configuration, the engaging member 33 is released from engagement with the gear portion 32a by the engaging release member, thereby enabling the fulcrum guide 16 to be switched to a state where it can rotate freely.

[0085] In this embodiment, a moving mechanism 20 is provided that allows the multiple fulcrum guides 16 to move between the winding position during yarn winding and the yarn hanging position during yarn hanging operations. When the multiple fulcrum guides 16 are in the yarn hanging position, the engagement release member (adjacent slider 21) maintains the engagement between the engagement member 33 and the gear portion 32a in a disengaged state. With this configuration, the fulcrum guides 16 are able to rotate freely during the yarn hanging operation, thus allowing the fulcrum guides 16 to rotate when the yarn Y is hooked onto them.

[0086] In this embodiment, the moving mechanism 20 includes: a plurality of sliders 21 supporting a plurality of fulcrum wire guides 16; a guide rail 22 on which the plurality of sliders 21 are slidably mounted; and a cylinder 23 for moving the plurality of sliders 21 along the guide rail 22. According to such a moving mechanism 20, the fulcrum wire guides 16 can be moved simply by moving the sliders 21 along the guide rail 22.

[0087] In this embodiment, as the multiple fulcrum guides 16 move from the winding position to the wire-hanging position, the adjacent sliders 21 along the long side (front-back direction) of the guide rail 22 approach each other. With this configuration, when the multiple fulcrum guides 16 are in the wire-hanging position, they are grouped together in a close proximity, thus facilitating the wire-hanging operation.

[0088] In this embodiment, the engaging member 33 has a protrusion 33a that protrudes from the slider 21 when the plurality of fulcrum guides 16 are in the winding position. When the plurality of fulcrum guides 16 move from the winding position to the wire-hanging position, the adjacent slider 21, acting as an engaging release member, presses down on the protrusion 33a, thereby releasing the engagement between the engaging member 33 and the gear portion 32a. With this configuration, the adjacent slider 21 functions as an engaging release member, thus eliminating the need for additional engaging release members and suppressing an increase in the number of components.

[0089] In this embodiment, a spring 34 is provided to apply force to the engaging member 33 in the direction of engaging the engaging member 33 with the gear part 32a. If such a spring 34 is provided, the rotation of the fulcrum guide 16 can be reliably prevented by the engaging member 33 during yarn winding.

[0090] (Second embodiment of the rotating mechanism)

[0091] A second embodiment of the rotating mechanism will be described. Descriptions of configurations common to the first embodiment will be omitted as appropriate; the main focus will be on the differences from the first embodiment. Figure 5 This is a diagram illustrating the operation of the switching mechanism 40 in the second embodiment. Figure 5 Figures (a) and (b) both show the state of the pivot guide 16 as it moves from the winding position to the wire hanging position. Figure 6 This is a diagram showing the configuration of the engagement / disengagement component 44 in the second embodiment.

[0092] The switching mechanism 40 in this embodiment is configured to include: a gear portion 42a formed on the holding member 42 holding each fulcrum guide 16; an engaging member 43 provided on each slider 21; and an engaging / disengaging member 44 fixed to the guide rail 22. In this embodiment, the gear portion 42a and the engaging member 43 are disposed on the back side (left side) of the slider 21, but these members may also be disposed on the surface side (right side) of the slider 21.

[0093] The fulcrum guide 16 and the holding member 32 have the same configuration as in the first embodiment, and the fulcrum guide 16 is capable of rotating freely around a central axis. The engaging member 43, which prevents the gear portion 42a from rotating by engaging with it, is provided on each slider 21. The engaging member 43 is an elongated member, with one end being a pressed portion 43a and the other end being an engaging portion 43b. The pressed portion 43a protrudes downward from the slider 21 and is pressed by the engaging / releasing member 44 during the movement of the fulcrum guide 16 from the winding position to the wire-hanging position. The engaging portion 43b is the part that engages with the gear portion 42a to prevent its rotation. A fulcrum 45 is disposed at the center of the engaging member 43, and the engaging member 43 is configured to rotate around the fulcrum 45. The engaging member 43 is connected to a spring 46, which applies force to the engaging portion 43b in the direction of engaging with the gear portion 42a.

[0094] like Figure 6 As shown, the engagement release member 44 is fixed to the front end of the guide rail 22 and extends rearward from the front end of the guide rail 22. The rear end of the engagement release member 44 is a pressing portion 44a that presses the pressing portion 43a of each engagement member 43. The pressing portion 44a of the engagement release member 44 is positioned forward of the engagement members 43 when the plurality of pivot guides 16 are in the winding position. Furthermore, the portion of the engagement release member 44 extending in the front-rear direction is positioned slightly downward away from the slider 21. Therefore, the engagement release member 44 does not contact the slider 21, but can contact the pressing portion 43a of the engagement member 43. Alternatively, the pressing portion 43a may also protrude upward from the slider 21, in which case the portion of the engagement release member 44 extending in the front-rear direction is positioned above the slider 21.

[0095] When the fulcrum guide 16 is in the winding position, the engaging portion 43b of the engaging member 43 engages with the gear portion 42a due to the force applied by the spring 46. After the fulcrum guide 16 begins to move from the winding position to the wire-hanging position, before the pressed portion 43a of the engaging member 43 contacts the pressed portion 44a of the engaging / disengaging member 44, as... Figure 5As shown in Figure (a), the engagement state of the engaging member 43 and the gear portion 42a is maintained. During the movement of the fulcrum guide 16 from the winding position to the wire-hanging position, when the pressed portion 43a of the engaging member 43 contacts the pressed portion 44a of the engaging release member 44, as... Figure 5 As shown in Figure (b), the pressed part 43a is pressed backward, thereby causing the engaging member 43 to move towards the pivot point 45. Figure 5 It rotates counterclockwise. As a result, the engaging part 43b of the engaging member 43 disengages from the gear part 42a, and the fulcrum guide 16 is switched to a state where it can rotate freely.

[0096] like Figure 6 As shown, when all the fulcrum guides 16 are moved to the wire-hanging position, all the engaging parts 43 disengage from the gear part 42a, and the fulcrum guides 16 become freely rotatable. Therefore, during the wire-hanging operation on the fulcrum guides 16, the wire Y contacts the outer peripheral surface of the fulcrum guides 16, thereby allowing the fulcrum guides 16 to rotate easily due to the tension of the wire Y. This allows the position where the wire Y contacts the fulcrum guides 16 during the next wire winding to be changed from the position during the previous wire winding, thereby suppressing the development of localized wear on the fulcrum guides 16.

[0097] When the wire-hanging operation on the fulcrum guide 16 is completed and the fulcrum guide 16 returns from the wire-hanging position to the winding position, the engaging parts 43 of each slider 21 disengage from the disengaging parts 44 during this process. Then, the engaging parts 43 rotate clockwise under the force applied by the spring 46, and the engaging portion 43b of the engaging part 43 engages with the gear portion 42a. Therefore, even when the fulcrum guide 16 returns to the winding position and the winding of the wire Y begins, the fulcrum guide 16 will not rotate at high speed due to the movement of the wire Y.

[0098] (Effects of the second embodiment)

[0099] The effects of this embodiment will be explained, but the effects resulting from the common configuration with the first embodiment will be omitted. In this embodiment, the engagement release member 44 is fixed to the guide rail 22. When the plurality of fulcrum wire guides 16 move from the winding position to the wire hanging position, the engagement release member 44 presses against the engagement member 43, thereby releasing the engagement between the engagement member 43 and the gear part 42a. With this configuration, the engagement release member 44 can be provided commonly for the plurality of fulcrum wire guides 16, so it is not necessary to provide an engagement release member 44 for each fulcrum wire guide 16, thus reducing the number of engagement release members 44. In addition, only one engagement release member 44 is provided in this embodiment, but two or more engagement release members 44 may also be provided. Furthermore, it is not necessary to fix the engagement release member 44 to the guide rail 22; the engagement release member 44 may also be fixed to a fixing member (e.g., support frame 14, etc.) that directly or indirectly fixes the guide rail 22.

[0100] (Other implementation methods)

[0101] The following describes variations obtained by applying various changes to the above embodiments.

[0102] In the above embodiment, gear portions 32a and 42a are formed on the outer peripheral surfaces of the holding members 32 and 42 of the fulcrum guide 16. However, gear portions may also be formed on the outer peripheral surface of the fulcrum guide 16.

[0103] In the above embodiment, when the multiple fulcrum guides 16 move from the winding position to the yarn-hanging position, the switching mechanisms 30 and 40 switch the fulcrum guides 16 to a freely rotatable state. However, the fulcrum guides 16 can also be switched to a freely rotatable state when not moving. For example, when the fulcrum guides 16 are in the winding position and the yarn Y is not being wound, the fulcrum guides 16 can also be switched to a freely rotatable state. In this case, a drive unit such as a motor that drives the engaging members 33 and 43 of the above embodiment can also be provided, and the fulcrum guides 16 can be switched to a freely rotatable state by operating the drive unit. Furthermore, with this configuration, it is not necessary for the multiple fulcrum guides 16 to move between the winding position and the yarn-hanging position.

[0104] In the above embodiment, when not winding the yarn, the switching mechanisms 30 and 40 switch all the fulcrum guides 16 to a freely rotatable state. However, the switching mechanisms 30 and 40 may also switch only the fulcrum guides 16 that are prone to localized wear (e.g., the fulcrum guides 16 at both ends) to a freely rotatable state. In this case, the other fulcrum guides 16 do not need to be freely rotatable; they only need to be fixed to the slider 21.

[0105] In the above embodiment, when the multiple fulcrum guides 16 are in the wire-hanging position, the multiple fulcrum guides 16 are assembled at the front end of the guide rail 22 in a state of close proximity to each other. However, the multiple fulcrum guides 16 do not necessarily need to be close to each other in the wire-hanging position without causing adjacent sliders 21 to function as engagement / disengagement components. That is, the present invention can be applied even when the multiple fulcrum guides 16 move integrally between the winding position and the wire-hanging position without changing their mutual spacing.

Claims

1. A wire winding machine, wherein multiple wires are wound onto multiple bobbins mounted on the winding shaft while simultaneously moving laterally about a plurality of fulcrum guides arranged axially along the winding shaft, characterized in that, The aforementioned multiple fulcrum guides are configured as rollers with a central shaft, on which the aforementioned yarns are hooked. One or more of the aforementioned pivot wire guides are configured to rotate freely around the aforementioned central axis. The yarn winding machine is equipped with a switching mechanism that prevents the rotation of one or more fulcrum guides during yarn winding and releases the restriction on rotation of one or more fulcrum guides when the yarn is not being wound.

2. The thread winding machine as described in claim 1, characterized in that, The aforementioned one or more fulcrum wire guides include two of the aforementioned fulcrum wire guides at both ends of the aforementioned axial direction.

3. The thread winding machine as described in claim 2, characterized in that, The above-mentioned one or more pivot wire guides include all of the above-mentioned pivot wire guides.

4. The thread winding machine as described in any one of claims 1 to 3, characterized in that, The aforementioned switching mechanism has: A gear portion is formed in the aforementioned pivot wire guide or in a retaining member that holds the aforementioned pivot wire guide; The engaging component engages with the gear portion during thread winding to prevent rotation of the gear portion; and The engagement release component releases the engagement between the engagement component and the gear portion when the thread is not being wound.

5. The thread winding machine as described in claim 4, characterized in that, The yarn winding machine is equipped with a moving mechanism that allows the multiple fulcrum guides to move between their winding position during yarn winding and their hanging position during yarn hanging operations. When the aforementioned multiple fulcrum wire guides are in the aforementioned wire hanging position, the aforementioned engagement release component maintains the state in which the engagement between the aforementioned engagement component and the aforementioned gear portion is released.

6. The thread winding machine as described in claim 5, characterized in that, The aforementioned mobile mechanism has: Multiple sliders support the aforementioned multiple pivot wire guides; Guide rail, on which the aforementioned plurality of sliders are slidably mounted; and The drive unit causes the aforementioned multiple sliders to move along the aforementioned guide rail.

7. The thread winding machine as described in claim 6, characterized in that, As the aforementioned multiple fulcrum guides move from the winding position to the wire hanging position, the sliders that are adjacent to each other in the long side direction of the guide rail approach each other.

8. The thread winding machine as described in claim 7, characterized in that, The aforementioned engaging component has a protrusion that protrudes from the aforementioned slider when the aforementioned plurality of pivot point wire guides are in the aforementioned take-up position. When the aforementioned multiple pivot wire guides move from the winding position to the wire hanging position, the adjacent slider, which serves as the engagement release component, presses against the protrusion, thereby releasing the engagement between the engagement component and the gear portion.

9. The thread winding machine as described in claim 6 or 7, characterized in that, The aforementioned engagement / disengagement component is fixed to the aforementioned guide rail or fixing component, and the fixing component directly or indirectly fixes the aforementioned guide rail. When the aforementioned multiple pivot wire guides move from the aforementioned take-up position to the aforementioned wire hanging position, the aforementioned engagement release component presses the aforementioned engagement component, thereby releasing the engagement between the aforementioned engagement component and the aforementioned gear portion.

10. The thread winding machine according to any one of claims 4 to 9, characterized in that, A force-applying component is provided to apply force to the engagement component in the direction in which the engagement component engages with the gear portion.

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