YARN WINDING AND DRAWING EQUIPMENT

Abstract

The invention responds, for example, to the increase in the winding of the yarn bundle or the change in the yarn winding position relative to the yarn spool, by ensuring the distance from the yarn path in the state in which the yarn-holding guide bar is moved to the waiting position, without impairing the yarn hooking function of the yarn hooking device. The yarn hooking device 40 comprises: a yarn-holding guide bar 50 for holding and releasing yarn Y which is moved back and forth by the side translation device 30; and a guiding drive unit 60 for changing the position of the yarn-holding guide bar 50 between the yarn-holding position PA2 to move the held yarn Y to the position to hook the held yarn Y onto the yarn fixing part S of the yarn spool B, and the waiting position PA4 which, in the released yarn Y state, is further away from the contact trajectory 32R than the yarn-holding position PA2. The fiber guide 50, by switching to the PA4 waiting position, is detached from the 32R contact trajectory in the axial direction of fiber tube B, and is detached from the 32R contact trajectory when viewed from the axial direction of fiber tube B.

Description

Spinning and Winding Equipment

[0001] The present invention relates to a take-up winding device that winds multiple yarns spun from a spinning device onto multiple bobbins to form multiple packages, and more particularly to a take-up winding device that includes multiple yarn hooking devices that hook the multiple yarns onto yarn fixing portions formed on the multiple bobbins.

[0002] 2. Description of the Related Art Conventionally, a take-up apparatus is provided with a plurality of thread hooking devices that hook a plurality of yarns onto yarn fixing portions formed on a plurality of bobbins (see, for example, Patent Document 1).

[0003] The threading device uses a thread catch guide to catch the yarn being reciprocated by the traverse device. The yarn caught by the thread catch guide is guided to a thread fixing portion of a new bobbin. The thread fixing portion is, for example, a slit formed in the circumferential direction of the bobbin near the end of the bobbin. The yarn guided to the thread fixing portion is fixed to the bobbin and becomes the winding start point.

[0004] The thread catch guide can be moved in the axial direction of the bobbin by a cylinder. During winding of the thread, the thread catch guide waits at a standby position in the axial direction of the bobbin. When switching to a new bobbin, the thread catch guide moves to a capturing position where it can capture the thread. After capturing the thread, the thread catch guide moves to a thread shifting position, and the thread is hooked onto the thread fixing portion of the new bobbin. The thread shifting position corresponds to the position of the thread fixing portion formed on the bobbin. After hooking the thread onto the thread fixing portion of the new bobbin, the thread catch guide moves to a thread release position to release the captured thread. After releasing the captured thread, the thread catch guide moves back to the standby position, and waits until switching to the next new bobbin.

[0005] JP 2017-154891 A

[0006] However, there are cases where improvements are required for packages formed by a take-up winding apparatus, such as increasing the winding amount, changing the winding position of the yarn relative to the bobbin, etc. For example, when increasing the winding width to increase the winding amount, it is necessary to simultaneously change the winding position of the yarn relative to the bobbin in order to ensure stability when stacking and packing the packages.

[0007] However, in the conventional threading device described above, the yarn catch guide in the standby position is close to the yarn path during winding, so when attempting to change the yarn path to change the winding position on the bobbin or the winding width, there is a risk of interference between the yarn being wound and the yarn catch guide in the standby position.

[0008] To avoid interference between the yarn being wound and the yarn catch guide at the standby position, it is possible to move the standby position of the yarn catch guide farther away from the yarn path in the axial direction of the bobbin. However, in conventional threading devices, the posture of the yarn catch guide at the standby position also serves as the posture of the yarn catch guide at the yarn shifting position. Therefore, with conventional thread catch guides, if the standby position is moved farther away from the yarn path in the axial direction of the bobbin, the yarn shifting position will also be changed, making it impossible to hook the yarn onto the thread fixing portion of a new bobbin.

[0009] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a take-up winding device that can accommodate package improvements, such as increasing the winding amount of the package or changing the winding position of the yarn on the bobbin, by ensuring a certain distance from the yarn path when the yarn catch guide is on standby, without impairing the yarn threading function of the yarn threading device.

[0010] The present invention provides the means for solving the above-mentioned problems as follows. That is, the spinning winding apparatus of the present invention is a spinning winding apparatus that winds a plurality of yarns spun from a spinning apparatus onto a plurality of bobbins, and comprises: a bobbin holder that holds the plurality of bobbins lined up in the axial direction; a plurality of fulcrum guides that feed the plurality of yarns toward the plurality of bobbins; a plurality of traverse devices having a plurality of traverse guides that guide the plurality of yarns fed from the plurality of fulcrum guides so that they move back and forth in the axial direction of the plurality of bobbins around the plurality of fulcrum guides; and a plurality of yarn hooking devices that hook the plurality of yarns on yarn fixing portions formed on the plurality of bobbins, wherein each of the plurality of yarn hooking devices is a yarn catch guide that catches and releases the yarn that is reciprocated by the traverse device, upstream of the traverse guide in the running direction of the yarn; a yarn shifting position that moves the posture of the yarn catch guide to a position where the caught yarn is hooked on the yarn fixing portion of the bobbin, using a contact trajectory that is determined by the contact position between the traverse guide and the yarn moving back and forth in the axial direction of the bobbin; a guide drive member that switches to a standby position that is farther away from the contact locus than the yarn pulling position when the yarn is released, and a guide drive member that switches to a standby position when the yarn is released, and by switching to the standby position, the yarn catch guide is moved away from the contact locus in the axial direction of the bobbin and is also moved away from the contact locus when viewed from the axial direction of the bobbin (first configuration).

[0011] According to the above configuration, the guide drive member has a guide drive member that switches the orientation of the yarn catch guide between a yarn shifting orientation, which moves the caught yarn to a position where the caught yarn is hooked onto the yarn fixing portion of the bobbin, and a standby orientation, which is further away from the contact locus than the yarn shifting orientation when the yarn is released. By switching to the standby orientation, the yarn catch guide is moved away from the contact locus in the axial direction of the bobbin and away from the contact locus as viewed from the axial direction of the bobbin. Therefore, when the yarn catch guide is switched to the standby orientation, the distance between the yarn catch guide and the running yarn can be increased. This ensures a sufficient distance from the yarn path. Furthermore, since the yarn shifting orientation does not need to be changed when the caught yarn is hooked onto the yarn fixing portion of the bobbin, the yarn hooking function of the yarn catch guide is not impaired. Therefore, the distance from the yarn path can be ensured when the yarn catch guide is in a standby state without impairing the yarn hooking function of the yarn hooking device. This allows for package improvements, such as increasing the package winding amount or changing the winding position of the yarn on the bobbin.

[0012] Specific configurations of the take-up winding device of the present invention include the following: In the first configuration, the standby posture may be a posture in which the yarn catch guide is moved to a standby position that is spaced apart from the contact locus in the axial direction of the bobbin and is moved higher than the yarn shifting posture with respect to the contact locus as viewed in the axial direction of the bobbin (second configuration).

[0013] According to the above configuration, when the yarn catch guide is switched to the standby position, it is moved to a standby position away from the contact locus in the bobbin axial direction and is moved higher relative to the contact locus as viewed from the bobbin axial direction than in the yarn shifting position. The yarn reciprocated by the traverse device reciprocates around a fulcrum guide located upstream in the yarn running direction. The yarn fed out as it reciprocates from the fulcrum guide to the traverse guide runs while changing its inclination angle with respect to the bobbin axial direction. Therefore, the inclination angle of the yarn is largest at both ends of the traverse range, which is the range over which the yarn is reciprocated by the traverse device. In other words, even if the position of the yarn catch guide in the yarn running direction remains the same, the distance between the yarn catch guide and the running yarn decreases as the distance from the contact locus in the yarn running direction decreases when the yarn catch guide is moved to the standby position upstream of the traverse guide. In other words, even if the position of the yarn catch guide in the bobbin axial direction remains the same, the closer the yarn catch guide is to the contact locus as viewed from the bobbin axial direction, the closer it is to the range where the yarn exists. Conversely, the distance between the yarn catch guide and the running yarn increases as the distance from the contact locus in the running direction of the yarn increases. In other words, even if the position of the yarn catch guide in the axial direction of the bobbin remains the same, the farther the yarn catch guide is from the range where the yarn is present as it moves away from the contact locus as viewed from the axial direction of the bobbin. Therefore, by moving the yarn catch guide to the standby position and switching it to a standby position that is moved higher with respect to the contact locus than the yarn-pushing position as viewed from the axial direction of the bobbin, the yarn catch guide is spaced away from the contact locus, thereby increasing the distance between the yarn catch guide and the running yarn compared to the yarn-pushing position. This ensures a sufficient distance from the yarn path when the yarn catch guide is switched to the standby position. Furthermore, since the position of the yarn catch guide does not need to be changed when hooking the captured yarn on the thread fixing portion of the bobbin, the threading function of the yarn catch guide is not impaired. Therefore, the distance from the yarn path can be ensured when the yarn catch guide is in a standby position without impairing the threading function of the threading device.This allows for improvements to the package, such as increasing the winding amount of the package or changing the winding position of the yarn on the bobbin.

[0014] In the first or second configuration, the guide drive member may switch the posture of the yarn capturing guide to a capturing posture, which moves the yarn reciprocatingly moved by the traverse device to a position where it can capture the yarn; switch from the capturing posture to the yarn pull-up posture, which moves the captured yarn to a position where it is hooked on the thread fixing portion of the bobbin; switch from the yarn pull-up posture to a yarn release posture, which moves the yarn between the yarn pull-up posture and the capturing posture in the axial direction of the bobbin and releases the yarn captured in the capturing posture; and switch from the yarn release posture to the standby posture (third configuration).

[0015] According to the above configuration, the guide drive member moves the thread catch guide in the axial direction of the bobbin and also moves the thread catch guide so as to change the distance from the contact locus as viewed from the axial direction of the bobbin, thereby switching the position of the thread catch guide between the catch position, the thread pull-up position, the thread release position, and the standby position. The guide drive member can switch the position of the thread catch guide between the catch position, the thread pull-up position, the thread release position, and the standby position by combining two simple actions: an action of moving the thread catch guide in the axial direction of the bobbin, and an action of moving the thread catch guide so as to change the distance from the contact locus as viewed from the axial direction of the bobbin. This allows the mechanism of the guide drive member to be simplified.

[0016] In the third configuration, the guide drive member may have: a drive unit that drives the thread capturing guide in the axial direction of the bobbin; and a guide unit that guides the thread capturing guide in the axial direction of the bobbin, and the guide unit may have: a first path unit that guides the thread capturing guide to switch from the capturing position to the thread pull-up position; a second path unit that guides the thread capturing guide to switch from the thread pull-up position to the thread removing position; a third path unit that guides the thread capturing guide to switch from the thread removing position to the standby position; and a fourth path unit that guides the thread capturing guide to switch from the standby position to the capturing position (fourth configuration).

[0017] According to the above configuration, the guide drive member has a guide section having the first, second, third, and fourth path sections, and a drive section that drives the yarn catch guide in the axial direction of the bobbin. Therefore, without complicating the configuration of the guide drive member, the yarn catch guide can be moved in the axial direction of the bobbin and the yarn catch guide can be moved so as to change its distance from the contact locus as viewed from the axial direction of the bobbin, and the position of the yarn catch guide can be switched among a capturing position, a yarn pulling position, a yarn release position, and a standby position.

[0018] In the above fourth configuration, the guide drive member supports the thread catching guide so that it can move in the axial direction of the bobbin and so that it can swing around a swing axis extending in the axial direction of the bobbin, and the guide section guides the thread catching guide in the axial direction of the bobbin and swings the thread catching guide so as to change the distance from the contact locus as viewed in the axial direction of the bobbin, thereby switching the thread catching guide to the thread release position and the standby position, which have a larger distance from the contact locus as viewed in the axial direction of the bobbin than the thread pull-up position (fifth configuration).

[0019] According to the above configuration, the guide drive member guides the yarn catch guide in the axial direction of the bobbin and swings the yarn catch guide so as to change the distance from the contact locus as viewed from the axial direction of the bobbin, thereby making it possible to switch the yarn catch guide between the yarn release position and the standby position, which are positions that are positioned at a greater distance from the contact locus than the yarn pull-up position as viewed from the axial direction of the bobbin.

[0020] In the fourth or fifth configuration, the thread catching guide is connected to a guided portion guided by the guiding portion, and the guiding portion may have a regulating portion that regulates a path along which the guided portion is guided so that the guided portion is guided from the first path portion to the second path portion, from the second path portion to the third path portion, and from the third path portion to the fourth path portion (sixth configuration).

[0021] According to the above configuration, the thread catching guide is connected to the guided portion guided by the guiding portion, and the guiding portion has a restricting portion that restricts the path along which the guided portion is guided. Therefore, by guiding the guided portion along a predetermined path, the guide portion can switch the position of the thread catching guide among the catching position, the thread pulling position, the thread releasing position, and the standby position.

[0022] In the sixth configuration, the regulating portion may have: a first regulating portion that allows the guided portion to enter toward the first path portion from a first connection portion between the first path portion and the fourth path portion and prevents the guided portion from entering toward the fourth path portion; a second regulating portion that allows the guided portion to enter toward the second path portion from a second connection portion between the first path portion and the second path portion and prevents the guided portion from entering toward the first path portion; and a third regulating portion that allows the guided portion to enter toward the third path portion from a third connection portion between the second path portion and the third path portion and prevents the guided portion from entering toward the second path portion (seventh configuration).

[0023] According to the above configuration, the guided portion of the thread catch guide can be guided toward a predetermined path by the first restricting portion, the second restricting portion, and the third restricting portion provided on the guide portion.

[0024] In the seventh configuration, the second regulating portion may be configured by a step formed between the first path portion and the second path portion, and the third regulating portion may be configured by a step formed between the second path portion and the third path portion (eighth configuration).

[0025] According to the above configuration, the second and third restricting portions are formed by steps, so that the guided portion of the thread catching guide can pass through the second and third restricting portions only from a predetermined direction, and the guided portion of the thread catching guide can be guided toward a predetermined path.

[0026] According to the take-up winding device of the present invention, by ensuring a distance from the yarn path when the yarn catch guide is in a standby state without impairing the yarn threading function of the yarn threading device, it is possible to accommodate improvements to the package, such as increasing the winding amount of the package or changing the winding position of the yarn on the bobbin.

[0027] FIG. 1 is a schematic diagram of a yarn take-up device to which a yarn winding apparatus according to an embodiment of the present invention is applied. FIG. 2 is a schematic diagram of a traverse device and a threading device. FIG. 3 is a schematic diagram of the traverse device and the threading device as viewed from the D1 direction in FIG. 2. FIG. 4 is a diagram showing a bobbin and a yarn fixing portion formed on the bobbin. FIG. 5(a) is a perspective view showing a state in which a guide portion main body and an insertion portion constituting a guide portion of a guide drive member are combined, and FIG. 5(b) is a perspective view showing an exploded state. FIG. 6 is a diagram showing a path portion along which a cam member guides a guided portion. FIG. 7 is a diagram showing a state in which a cam member guides a guided portion. FIG. 8(a) is a diagram explaining the configuration of a cam member, and FIG. 8(b) is an enlarged perspective view of the area from line A1-A1 to line A2-A2 in FIG. 8(a). FIG. 9 is a diagram showing a state in which a yarn catch guide of the yarn hooking device is in a catch position. FIG. 10 is a diagram showing a state in which a yarn catch guide of the yarn hooking device is in a yarn shift position. Fig. 11 is a diagram showing a state in which the yarn catch guide of the yarn threading device is in the yarn removal position, Fig. 12 is a diagram showing a state in which the yarn catch guide of the yarn threading device is in the standby position, and Fig. 13 is a diagram explaining the distance from the yarn path to the standby position of the yarn catch guide.

[0028] [Embodiment 1] A take-up winding apparatus 100 according to embodiment 1 of the present invention will be described in detail below with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and their description will not be repeated. To facilitate understanding of the description, the drawings referred to below show simplified or schematic configurations, and some components are omitted. Furthermore, the dimensional ratios between the components shown in each drawing do not necessarily represent the actual dimensional ratios.

[0029] In the following figures, for convenience of explanation, arrow U indicates the upward direction of the fiber take-up winding apparatus 100 and the fiber take-up apparatus 200, and arrow D indicates the downward direction. Arrow F indicates the forward direction of the fiber take-up winding apparatus 100, and arrow B indicates the rearward direction. Arrow R indicates the rightward direction of the fiber take-up winding apparatus 100, and arrow L indicates the leftward direction. The front-to-rear direction of the fiber take-up winding apparatus 100 coincides with the axial direction of the bobbin B attached to the fiber take-up winding apparatus 100. For this reason, in the following explanation, the front-to-rear direction may be referred to as the axial direction of the bobbin B.

[0030] (Yarn take-up device) Fig. 1 is a schematic diagram of a yarn take-up device 200 to which the yarn take-up winding device 100 according to an embodiment of the present invention is applied. As shown in Fig. 1, the yarn take-up device 200 is a device that takes up each of a plurality of yarns Y spun from a spinning device 2. The yarn take-up device 200 includes a stretching section 3, take-up rollers 4 and 5, an interlace 6, a yarn take-up device 100, etc. The operation of the yarn take-up device 200 is controlled by a control device 8.

[0031] The spinning device 2 is disposed above the spinning take-up device 200. In the spinning device 2, a polymer supplied from a polymer supply device (not shown) is extruded downward from a spinneret, and multiple yarns Y are spun out in a state where they are aligned in the left-right direction.

[0032] The multiple yarns Y spun from the spinning device 2 are aligned in the left-right direction and travel along a yarn path that passes through the drawing section 3, the take-up roller 4, the interlace 6, and the take-up roller 5. Furthermore, the multiple yarns Y are distributed in the front-rear direction from the take-up roller 5 and are then wound onto multiple bobbins B in the take-up device 100.

[0033] The drawing section 3 is disposed below the spinning device 2. The drawing section 3 has a heat insulation box 10 and a plurality of heating rollers (not shown) housed in the heat insulation box 10. The drawing section 3 uses the plurality of heating rollers to heat and draw each of the plurality of yarns Y spun from the spinning device 2. Note that a cutter 11 is disposed upstream of the drawing section 3 to cut the plurality of yarns Y to stop winding when yarn breakage occurs, for example.

[0034] The plurality of yarns Y drawn in the drawing section 3 are sent to the take-up winding device 100 by take-up rollers 4 and 5. An interlace 6 is disposed between the take-up rollers 4 and 5. The interlace 6 entangles the numerous filaments that make up one yarn Y, thereby imparting bundling properties. The interlace 6 may be configured to entangle the filaments with an air flow sprayed from an air nozzle, for example.

[0035] (Yarn take-up winding device) The yarn take-up winding device 100 is a device that winds a plurality of yarns Y spun from the spinning device 2 onto a plurality of bobbins B. The yarn take-up winding device 100 is disposed below the take-up roller 5. The yarn take-up winding device 100 simultaneously winds a plurality of yarns Y sent from the take-up roller 5 onto a plurality of bobbins B to form a plurality of packages P. The yarn take-up winding device 100 includes a machine base 20, a turret 21, a bobbin holder 22, a support frame 23, a contact roller 26, a traverse device 30, etc.

[0036] The turret 21 is a disk-shaped member rotatably mounted on the machine base 20. The turret 21 is driven to rotate by a turret motor (not shown) around an axis 21a parallel to the front-rear direction. Two long, cylindrical bobbin holders 22 are cantilevered by the turret 21 and extend in the front-rear direction. The two bobbin holders 22 are mounted at two positions symmetrical to each other with respect to the rotation center of the turret 21. Each bobbin holder 22 is driven to rotate by a bobbin holder motor (not shown) around an axis 22a parallel to the front-rear direction. The two bobbin holders 22 can be switched between an upper winding position and a lower retracted position by the rotation of the turret 21.

[0037] A plurality of bobbins B (eight in this embodiment) are mounted on each bobbin holder 22 and lined up in the axial direction. The bobbin holder 22 located at the upper winding position is rotated by a bobbin holder motor, whereby the yarn Y is wound onto each of the plurality of bobbins B held by the bobbin holder 22 to form a package P. When the package P is completed, the turret 21 rotates, whereby the bobbin holder 22 located at the upper winding position is swapped with the bobbin holder 22 located at the lower retracted position, and the bobbin holder 22 that forms the package P is switched.

[0038] The support frame 23 is a long frame-like member extending in the front-rear direction. The rear end of the support frame 23 is cantilevered by the machine base 20. A roller support member 25 is attached to the lower part of the support frame 23 so as to be movable up and down relative to the support frame 23.

[0039] The roller support member 25 is provided with a contact roller 26, a plurality of fulcrum guides 27, and a plurality of traverse devices 30. The contact roller 26 extends along the axial direction of the bobbin holder 22 and is rotatably supported by the roller support member 25. The contact roller 26 comes into contact with the surfaces of the plurality of packages P formed on the bobbin holder 22 at the winding position and rotates at a surface speed substantially the same as the surface speed of the packages P to feed the yarn Y to the packages P and apply a predetermined contact pressure to the packages P to shape the packages P.

[0040] The plurality of fulcrum guides 27 and the plurality of traverse devices 30 are arranged to correspond to the positions of the plurality of bobbins B attached to the bobbin holder 22. The fulcrum guide 27 is the center of the reciprocating movement of the yarn Y by the traverse device 30.

[0041] (Traverse device) Figure 2 is a schematic diagram of the traverse device 30 and the threading device 40. In the following description, the surface viewed from the direction of Figure 2 is the front of the traverse device 30 and the threading device 40. In Figure 2, the traverse device 30 and the threading device 40 are viewed from a direction perpendicular to the surface of the traverse guide 31 provided in the traverse device 30. Furthermore, the direction D1 in Figure 2 is orthogonal to the front direction and indicates the direction in which the threading device 40 is viewed from the guide end 32 side, which is the end of the traverse guide 31. Figure 3 is a schematic diagram of the traverse device 30 and the threading device 40 as viewed from the direction D1 in Figure 2.

[0042] 2 and 3, the plurality of traverse devices 30 are disposed below the corresponding fulcrum guides 27. The traverse devices 30 reciprocate the yarn Y to be wound onto the corresponding bobbins B in the front-to-rear direction (the axial direction of the bobbins B).

[0043] The traverse device 30 has a traverse guide 31 and two blade guides 35 and 36. The traverse guide 31 is a plate-shaped member and is disposed so that a guide end 32 extends in the front-to-rear direction (the axial direction of the bobbin B). The reciprocating yarn Y comes into contact with the guide end 32, which guides the yarn Y in the front-to-rear direction (the axial direction of the bobbin B).

[0044] The two blade guides 35, 36 reciprocate the yarn Y in the front-to-back direction within the traverse range R, centered around a fulcrum guide 27 disposed above the traverse device 30. If the front surface 31A of the traverse guide 31 is the upstream surface in the running direction DT of the yarn Y (the surface on the front side of the paper in FIG. 2, see FIG. 3) and the opposite surface is the back surface 31B of the traverse guide 31 (the surface on the back side of the paper in FIG. 2, see FIG. 3), the two blade guides 35, 36 are disposed on the back surface 31B side of the traverse guide 31 and are configured to rotate in opposite directions. Figure 2 shows the state in which the respective ends 351, 361 of the two blade guides 35, 36 are visible from below the guide end 32 of the traverse guide 31.

[0045] The yarn Y that has come into contact with the traverse guide 31 is moved forward by one of the blade guides 35 that rotates from rear to front, and when it reaches the front end of the traverse range R, it is handed over to the other blade guide 36 that rotates from front to rear. The handed-over yarn Y is moved backward by the other blade guide 36, and when it reaches the rear end of the traverse range R, it is handed over to the blade guide 35 again. By repeating the same operation, the yarn Y is moved back and forth in the front-to-back direction within the traverse range R around the fulcrum guide 27.

[0046] In this embodiment, the guide end 32 of the traverse guide 31 corresponds to the position where the traverse guide 31 contacts the yarn Y. This contact position moves back and forth in the axial direction of the bobbin B as the traverse device 30 moves the yarn Y back and forth within the traverse range R. Therefore, the portion of the guide end 32 that is included in the traverse range R (contact trajectory 32R) corresponds to the "trajectory (contact trajectory) defined by the contact position between the traverse guide and the yarn moving back and forth in the axial direction of the bobbin" in the present invention.

[0047] In this embodiment, the traverse device 30 is configured to include the traverse guide 31 and the two blade guides 35, 36, but other configurations may also be used for the traverse device. For example, the traverse guide may be a member that engages with the yarn Y, and the yarn Y may be reciprocated in the front-to-rear direction by reciprocating the traverse guide in the front-to-rear direction. In this case, for example, a substantially U-shaped guide portion may be provided at the tip of the traverse guide, and the yarn Y may be engaged with the traverse guide by sandwiching it therebetween. The traverse guide may be reciprocated in the front-to-rear direction by, for example, rotating a traverse cam.

[0048] (Threading Device) The threading device 40 is a device that hooks and fixes multiple yarns Y on thread fixing portions S formed on multiple bobbins B, thereby setting them as winding start points. The threading device 40 is provided to correspond to each traverse device 30. For example, when multiple bobbins B on which multiple yarns Y are wound are switched to multiple new bobbins B, the threading device 40 hooks and fixes the multiple yarns Y on thread fixing portions S formed on the new multiple bobbins B, thereby setting them as winding start points.

[0049] 4 is a diagram showing a bobbin B and a thread fixing portion S formed on the bobbin B. As shown in FIG. 4, in this embodiment, the thread fixing portion S of the bobbin B is a slit formed in the circumferential direction of the bobbin B near one end of the bobbin B. In this embodiment, multiple bobbins B are attached to the bobbin holder 22 so that the thread fixing portion S is located on the front end side of the bobbin holder 22. A new bobbin B is threaded by the threading device 40, which fixes the thread Y by causing it to bite into the thread fixing portion S (slit).

[0050] As shown in FIGS. 2 and 3, the threading device 40 includes a thread catch guide 50 and a guide drive member 60.

[0051] The yarn catch guide 50 is a member that catches and releases the yarn Y reciprocated by the traverse device 30, upstream of the guide end 32 of the traverse guide 31 in the running direction DT of the yarn Y. In this embodiment, the yarn catch guide 50 is disposed on the surface 31A side of the traverse guide 31, opposite the two blade guides 35, 36. The yarn catch guide 50 is formed with a catch portion 51 and a yarn introduction guide 54.

[0052] The yarn catching guide 50 is driven by the guide drive member 60 to move along the traverse guide 31 in the axial direction of the bobbin B (see FIGS. 9 to 12). Furthermore, the yarn catching guide 50 is driven by the guide drive member 60 to change the distance in the running direction DT of the yarn Y from the contact locus 32R (see FIGS. 9 to 13). In other words, the yarn catching guide 50 is driven by the guide drive member 60 to change the distance from the contact locus 32R as viewed in the axial direction of the bobbin B.

[0053] In this embodiment, by moving the yarn catch guide 50 in the axial direction of the bobbin B and changing the distance of the yarn catch guide 50 in the running direction DT of the yarn Y relative to the contact locus 32R, it is possible to switch the yarn catch guide 50 between a position where it is close to the traverse guide 31 and a position where it is farther away from the traverse guide 31. In other words, by moving the yarn catch guide 50 in the axial direction of the bobbin B, it is possible to switch the yarn catch guide 50 between a position where it is close to the contact locus 32R and a position where it is farther away from the contact locus 32R, as viewed from the axial direction of the bobbin B. This makes it possible to switch the position of the yarn catch guide 50 between a catch position PA1 (see FIG. 9), a yarn pull-up position PA2 (see FIG. 10), a yarn release position PA3 (see FIG. 11), and a standby position PA4 (see FIG. 12). In this embodiment, by moving the yarn catch guide 50 up and down relative to the contact locus 32R, as viewed from the axial direction of the bobbin B, it is possible to change the distance from the traverse guide 31 to the yarn catch guide 50.

[0054] The capturing portion 51 captures the yarn Y reciprocated by the traverse device 30 and releases the captured yarn Y. The capturing portion 51 is formed with a slit through which the yarn Y can be inserted. An opening portion 52 is formed at the end of the capturing portion 51. The opening portion 52 is formed at the end of the capturing portion 51 that is closer to the guide drive member 60, and is open toward the center of the traverse range R. The yarn Y can enter and exit the slit of the capturing portion 51 via the opening portion 52. The yarn Y is captured by the yarn capture guide 50 by entering the capturing portion 51 via the opening portion 52, and is released from the yarn capture guide 50 by exiting the capturing portion 51 via the opening portion 52.

[0055] The yarn introduction guide 54 guides the yarn Y to the open portion 52 of the catching portion 51, allowing the yarn Y to be caught by the catching portion 51. The yarn introduction guide 54 is formed at one of the front-to-rear ends of the yarn catching guide 50, the end closest to the center of the traverse range R. The yarn introduction guide 54 is formed so that the yarn Y, which is reciprocated by the traverse device 30, comes into contact with the yarn introduction guide 54 when the yarn catching guide 50 is moved in the axial direction of the bobbin B to be positioned inside the traverse range R.

[0056] The yarn introduction guide 54 is formed to be inclined with respect to the guide end portion 32 of the traverse guide 31 so that the yarn Y that comes into contact with it is guided to the open portion 52. When the yarn catch guide 50 is positioned inside the traverse range R and the yarn Y that is reciprocated by the traverse device 30 comes into contact with the yarn introduction guide 54, the yarn Y moves toward the front end of the traverse range R. Therefore, a force acting on the yarn Y toward the front end of the traverse range R is applied to the yarn Y. Due to the action of this force, the yarn Y is guided along the inclination of the yarn introduction guide 54 to the open portion 52 of the catch portion 51, and enters the catch portion 51 from the open portion 52 to be caught.

[0057] The guide driving member 60 moves the yarn catching guide 50 in the axial direction of the bobbin B along the traverse guide 31. The guide driving member 60 also changes the distance of the yarn catching guide 50 in the running direction DT of the yarn Y relative to the contact locus 32R. In other words, the guide driving member 60 moves the yarn catching guide 50 along the traverse guide 31 and switches the yarn catching guide 50 between a position where it is close to the traverse guide 31 and a position where it is separated from the traverse guide 31 (see FIGS. 9 to 12 ). The guide driving member 60 has a driving unit 61 and a guide unit 70.

[0058] The drive unit 61 drives the thread catch guide 50 in the axial direction of the bobbin B. In this embodiment, an air cylinder is used as the drive unit 61. A rod 62 of the drive unit 61 is connected to a guide unit 70 (insertion portion 73) via a clamp 63 (see FIG. 5). The driving force of the drive unit 61 in the front-to-rear direction is transmitted to the thread catch guide 50 via the guide unit 70 (insertion portion 73). Note that a drive source other than an air cylinder can be used as the drive unit 61.

[0059] The guide portion 70 guides the yarn catch guide 50 in the axial direction of the bobbin B along the traverse guide 31, and changes the distance in the running direction DT of the yarn Y with respect to the contact locus 32R. The guide portion 70 has a guide portion main body 71, an insertion portion 73, and a cam member 80.

[0060] The guide body 71 is disposed near the front end of the traverse guide 31. The insertion portion 73 is held inside the guide body 71 so as to be movable in the front-rear direction. The insertion portion 73 is also held so as to be swingable around an axis 73 a relative to the guide body 71.

[0061] The insertion portion 73 is a substantially cylindrical member. The thread catching guide 50 is connected to the insertion portion 73 via a connecting portion 74. The guide body 71 is formed with an opening 78 through which the connecting portion 74 is inserted. A connecting end portion 75 is provided at the rear end of the insertion portion 73. The connecting end portion 75 is connected to the drive unit 61 via the clamp 63. The insertion portion 73 is connected to the clamp 63 so as to be swingable around a shaft 73a.

[0062] The cam member 80 is a member that guides the insertion portion 73 in the front-rear direction and also guides the insertion portion 73 to swing around the axis 73a. The insertion portion 73, which is driven in the front-rear direction by the drive unit 61, is guided by the cam member 80, and the posture of the insertion portion 73 is changed in the front-rear direction and around the axis 73a. As a result, the distance of the yarn catching guide 50 connected to the insertion portion 73 in the running direction DT of the yarn Y is changed with respect to the contact locus 32R, and the yarn catching guide 50 is switched between a posture in which it is close to the traverse guide 31 and a posture in which it is separated from the traverse guide 31.

[0063] The cam member 80 is housed in a cam housing portion 81 provided in the guide portion main body 71. A biasing member 82 that biases the cam member 80 toward the insertion portion 73 is disposed in the cam housing portion 81. A leaf spring, for example, can be used as the biasing member 82. The cam member 80 and biasing member 82 housed in the cam housing portion 81 are positioned by an attachment member 83 that is attached to the outside of the guide portion main body 71.

[0064] A guided portion 76 (see FIG. 5) is provided on the side of the insertion portion 73. The guided portion 76 protrudes radially from the insertion portion 73 and abuts against a cam member 80. The cam member 80 guides the guided portion 76, thereby allowing the posture of the insertion portion 73 to change in the front-rear direction and around the axis 73a.

[0065] Because the cam member 80 is urged toward the insertion portion 73 by the urging member 82, a predetermined contact pressure is maintained between the cam member 80 and the guided portion 76 even if the posture of the insertion portion 73 changes or the contact position between the guided portion 76 and the cam member 80 changes. The attachment member 83 is detachable, and maintenance such as replacing the cam member 80 and the urging member 82 can be performed by removing the attachment member 83.

[0066] Fig. 5(a) is a perspective view showing the guide part 70 of the guide drive member 60, in a state where the guide part main body 71 and the insertion part 73 are assembled, and Fig. 5(b) is a perspective view showing the guide part 70 disassembled. As shown in Fig. 5, the insertion part 73 is a substantially cylindrical member. The thread catching guide 50 is connected to the insertion part 73 via a connecting part 74. A guided part 76 is provided on the side of the insertion part 73. The guided part 76 protrudes in the direction opposite to the extension direction of the thread catching guide 50. A guided groove 761 extending in the front-rear direction is formed at the tip of the guided part 76.

[0067] The insertion portion 73 is fitted into the guide body 71 from the front to the rear. An opening 78 is formed in the guide body 71, through which the connecting portion 74 is inserted. Inside the guide body 71, a cam member 80 and a biasing member 82 are positioned by an attachment member 83 (see FIG. 2).

[0068] When the guiding section main body 71 and the insertion section 73 are combined, the guided section 76 of the insertion section 73 abuts against and is guided by the cam member 80 inside the guiding section main body 71. The guided section 76 is guided by the cam member 80, and the position of the insertion section 73 is changed in the front-to-rear direction and around the shaft 73a, so that the position of the yarn catching guide 50 connected to the insertion section 73 is switched between a position where it is close to the traverse guide 31 and a position where it is separated from the traverse guide 31, as shown by the arrow DR in Figure 5(a) . This makes it possible to switch the position of the yarn catching guide 50 between a capturing position PA1 (see Figure 9), a yarn pulling position PA2 (see Figure 10), a yarn releasing position PA3 (see Figure 11), and a standby position PA4 (see Figure 12)

[0069] (Cam Member) Fig. 6 is a diagram showing a path portion along which the cam member 80 guides the guided portion 76. Fig. 7 is a diagram showing a state in which the cam member 80 guides the guided portion 76. Fig. 8(a) is a diagram explaining the configuration of the cam member 80, and Fig. 8(b) is an enlarged perspective view of the area from line A1-A1 to line A2-A2 in Fig. 8(a).

[0070] As explained using Figures 2 to 5, the guided portion 76 of the insertion portion 73 is guided by the cam member 80, and the position of the thread capturing guide 50 is switched between a capturing position PA1, a thread pulling position PA2, a thread removal position PA3, and a standby position PA4.

[0071] As shown in FIG. 6 , the cam member 80 has path sections set so that the guided portion 76 is guided along a predetermined path to switch the position of the thread catch guide 50. The cam member 80 has a first path section 91, a second path section 92, a third path section 93, and a fourth path section 94. The guided portion 76 is guided by these path sections, so that the position of the thread catch guide 50 is switched as follows: The first path section 91 guides the guided portion 76 so that the thread catch guide 50 is switched from the capturing position PA1 to the thread pull-up position PA2. The second path section 92 guides the guided portion 76 so that the thread catch guide 50 is switched from the thread pull-up position PA2 to the thread release position PA3. The third path section 93 guides the guided portion 76 so that the thread catch guide 50 is switched from the thread release position PA3 to the standby position PA4. The fourth path portion 94 guides the guided portion 76 so that the yarn catching guide 50 switches from the standby position PA4 to the catching position PA1.

[0072] Each path portion is connected by a connection portion so that the guided portion 76 is guided sequentially through the first path portion 91, the second path portion 92, the third path portion 93, and the fourth path portion 94. Specifically, the first path portion 91 and the fourth path portion 94 are connected at a first connection portion 101. The first path portion 91 and the second path portion 92 are connected at a second connection portion 102. The second path portion 92 and the third path portion 93 are connected at a third connection portion 103. The third path portion 93 and the fourth path portion 94 are connected at a fourth connection portion 104.

[0073] As shown in FIG. 7 , the start point (end point) of each path section corresponds to the following postures of the yarn catch guide 50. As shown in FIG. 7( a), when the guided section 76 is located at the first connection section 101, which is the start point of the first path section 91 (the end point of the fourth path section 94) (first cam position), the yarn catch guide 50 is in a capturing posture PA1 (see FIG. 9 ). As shown in FIG. 7( b), when the guided section 76 is located at the second connection section 102, which is the start point of the second path section 92 (the end point of the first path section 91) (second cam position), the yarn catch guide 50 is in a yarn-pushing posture PA2 (see FIG. 10 ). As shown in FIG. 7( c), when the guided section 76 is located at the third connection section 103, which is the start point of the third path section 93 (the end point of the second path section 92) (third cam position), the yarn catch guide 50 is in a yarn-releasing posture PA3 (see FIG. 11 ). As shown in Fig. 7(d), when the guided portion 76 is located at the fourth connection portion 104, which is the starting point of the fourth path portion 94 (the end point of the third path portion 93) (fourth cam position), the yarn catching guide 50 is in the standby position PA4 (see Fig. 12). As shown in Fig. 7(e), when the guided portion 76 is located at the first connection portion 101, which is the end point of the fourth path portion 94 (the starting point of the first path portion 91) (first cam position), the yarn catching guide 50 is in the catching position PA1 (see Fig. 9).

[0074] Here, the first connection portion 101 (first cam position) ( FIG. 7A ) and the second connection portion 102 (second cam position) ( FIG. 7B ) are arranged along the front-to-rear direction. Therefore, when the guided portion 76 is guided from the first connection portion 101 (first cam position) through the first path portion 91 to the second connection portion 102 (second cam position), the position of the insertion portion 73 changes only in the front-to-rear direction. As a result, the yarn catching guide 50 is switched from the catching position PA1 to the yarn pushing position PA2 while remaining close to the traverse guide 31 (see FIGS. 9 and 10 ).

[0075] The second connection portion 102 (second cam position) ( FIG. 7( b) ) and the third connection portion 103 (third cam position) ( FIG. 7( c) ) not only differ in position in the front-to-rear direction, but also change in position in a direction intersecting the front-to-rear direction. Therefore, when the guided portion 76 is guided from the second connection portion 102 (second cam position) through the second path portion 92 to the third connection portion 103 (third cam position), the posture of the insertion portion 73 changes not only in the front-to-rear direction but also around the axis 73 a. As a result, the yarn catching guide 50 is switched to the yarn releasing position PA3 while gradually moving away from the traverse guide 31 from a state close to the traverse guide 31 (see FIGS. 10 and 11 ).

[0076] The third connection portion 103 (third cam position) ( FIG. 7( c) ) and the fourth connection portion 104 (fourth cam position) ( FIG. 7( d) ) not only differ in position in the front-to-rear direction, but also in the direction intersecting the front-to-rear direction. Therefore, when the guided portion 76 is guided from the third connection portion 103 (third cam position) through the third path portion 93 to the fourth connection portion 104 (fourth cam position), the change in the position of the insertion portion 73 around the axis 73a becomes even greater. As a result, the yarn catching guide 50 is switched to the standby position PA4 while moving further away from the traverse guide 31. In the standby position PA4, the yarn catching guide 50 is farther away from the traverse guide 31 than in the yarn pushing position PA2 (see FIGS. 11 and 12 ).

[0077] The fourth connection portion 104 (fourth cam position) (FIG. 7(d)) ​​and the first connection portion 101 (first cam position) (FIG. 7(e)) not only differ in position in the front-to-rear direction, but also in position in a direction intersecting the front-to-rear direction, resulting in the same state as FIG. 7(a). Therefore, when the guided portion 76 is guided from the fourth connection portion 104 (fourth cam position) through the fourth path portion 94 to the first connection portion 101 (first cam position), the position of the insertion portion 73 changes not only in the front-to-rear direction but also around the axis 73a. As a result, the yarn catching guide 50 is switched from a standby position PA4 in which it is spaced apart from the traverse guide 31 to a catching position PA1 while gradually approaching the traverse guide 31 (see FIGS. 12 and 9).

[0078] As shown in FIG. 6 , a fourth path portion 94 and a second path portion 92 are connected to the first path portion 91 of the cam member 80 at a starting point (first connection portion 101) and an end point (second connection portion 102). A third path portion 93 is connected to the second path portion 92 at an end point (third connection portion 103). The cam member 80 is provided with a restricting portion 120 (see FIG. 8 ) so that when the guided portion 76 is guided, it is reliably guided to a predetermined path at the path connection portion. The restricting portion 120 restricts the guided portion 76 from entering a different path. The detailed configuration of the paths of the cam member 80 will be described using FIG. 8 .

[0079] As shown in FIG. 8 , the cam member 80 has a first cam surface 111, a second cam surface 112, a third cam surface 113, a fourth cam surface 114, a fifth cam surface 115, a sixth cam surface 116, a seventh cam surface 117, an eighth cam surface 118, and a ninth cam surface 119. The first to ninth cam surfaces 111 to 119 have different relative protrusion amounts, in other words, different protrusion amounts relative to the guided portion 76, but all serve as cam surfaces that guide the guided portion 76. A cam surface that protrudes relatively less relative to the guided portion 76 is referred to as a low-height cam surface, and a cam surface that protrudes relatively more relative to the guided portion 76 is referred to as a high-height cam surface. A cam surface that is inclined to connect cam surfaces of different heights is referred to as an inclined cam surface. A surface formed when cam surfaces of different heights are adjacent, and a portion that the guided portion 76 cannot overcome when it abuts against it, is referred to as a step. The step is such that the guided portion 76 can overcome (pass through) the step in the direction from the relatively high cam surface to the low cam surface, but the guided portion 76 cannot overcome (pass through) the step in the direction from the relatively low cam surface to the high cam surface.

[0080] The first cam surface 111 to the ninth cam surface 119 constitute a first path portion 91, a second path portion 92, a third path portion 93, and a fourth path portion 94 of the cam member 80 as follows (see FIG. 6 ). The first path portion 91 is constituted by the first cam surface 111, the second cam surface 112, the third cam surface 113, the fourth cam surface 114, the fifth cam surface 115, and the sixth cam surface 116. The second path portion 92 is constituted by the sixth cam surface 116, the fifth cam surface 115, the fourth cam surface 114, and the seventh cam surface 117. The third path portion 93 is constituted by the seventh cam surface 117 and the eighth cam surface 118. The fourth path portion 94 is constituted by the eighth cam surface 118, the seventh cam surface 117, and the ninth cam surface 119.

[0081] Of the first cam surface 111 to the ninth cam surface 119, the first cam surface 111, the sixth cam surface 116, the seventh cam surface 117, the eighth cam surface 118 and the ninth cam surface 119 have the same relative protrusion amount, and are the cam surfaces with the smallest relative protrusion amount among the cam surfaces that make up the cam member 80.

[0082] Of the first cam surface 111 to the ninth cam surface 119, the third cam surface 113 is the cam surface with the largest relative protrusion amount, and the fourth cam surface 114 is the cam surface with the second largest relative protrusion amount after the third cam surface 113.

[0083] The second cam surface 112 is an inclined cam surface that connects the first cam surface 111 and the third cam surface 113. The fifth cam surface 115 is an inclined cam surface that connects the sixth cam surface 116 and the fourth cam surface 114.

[0084] A first step 121 is formed between third cam surface 113, which is at a different height, and fourth cam surface 114. A second step 122 is formed between fourth cam surface 114, which is at a different height, and seventh cam surface 117 and eighth cam surface 118. A third step 123 is formed between third cam surface 113, which is at a different height, and seventh cam surface 117 and ninth cam surface 119.

[0085] A protrusion 141 extending in the front-rear direction is formed on the second cam surface 112 and the third cam surface 113. The protrusion 141 engages with a guided groove 761 formed at the tip of the guided portion 76, thereby guiding the guided portion 76 in the front-rear direction.

[0086] 7A, when the guided portion 76 is located at the first connection portion 101 (first cam position), which is the starting point of the first path portion 91 (the end point of the fourth path portion 94), the guided portion 76 may be guided to the first path portion 91 or the fourth path portion 94. This is because the first connection portion 101 (first cam position) is the connection portion between the first path portion 91 and the fourth path portion 94.

[0087] 8 , the protrusions 141 formed on the first cam surface 111 and the second cam surface 112 engage with the guided grooves 761 of the guided portion 76, thereby allowing the guided portion 76 to advance from the first connection portion 101 toward the first path portion 91. The protrusions 141 also prevent the guided portion 76 from advancing from the first connection portion 101 toward the fourth path portion 94. The protrusions 141 correspond to the first restricting portion (restricting portion 120) of the present invention.

[0088] When the guided portion 76 is located at the second connection portion 102 (second cam position) ( FIG. 7B ), which is the starting point of the second path portion 92 (the end point of the first path portion 91), the guided portion 76 may be guided to the first path portion 91 or the second path portion 92. This is because the second connection portion 102 is the connection portion between the first path portion 91 and the second path portion 92.

[0089] 8 , a first step 121 is formed between the third cam surface 113 and the sixth cam surface 116, fifth cam surface 115, and fourth cam surface 114, which are at different heights. The first step 121 allows the guided portion 76 to enter from the second connection portion 102 toward the second path portion 92. The first step 121 also prevents the guided portion 76 from entering toward the first path portion 91. The first step 121 corresponds to the second restricting portion (restricting portion 120) of the present invention.

[0090] When the guided portion 76 is located at a third connection portion 103 (third cam position) ( FIG. 7C ), which is the starting point of the third path portion 93 (the end point of the second path portion 92), the guided portion 76 may be guided to the second path portion 92 or the third path portion 93. This is because the third connection portion 103 is the connection portion between the second path portion 92 and the third path portion 93.

[0091] A second step 122 is formed between the fourth cam surface 114, which is at a different height from the seventh cam surface 117 and the eighth cam surface 118. The second step 122 allows the guided portion 76 to enter from the third connection portion 103 toward the third path portion 93. The second step 122 also prevents the guided portion 76 from entering toward the second path portion 92. The second step 122 corresponds to the third restriction portion (restriction portion 120) of the present invention.

[0092] When the guided portion 76 is guided from the fourth connection portion 104 (fourth cam position) ( FIG. 7D ) to the first connection portion 101 (first cam position) ( FIG. 7E ), the guided portion 76 is guided to the fourth path portion 94. In this case, the guided portion 76 is guided to a second step 122 formed between the fourth cam surface 114, which has a different height, and the seventh cam surface 117 and eighth cam surface 118, and a third step 123 formed between the third cam surface 113, which has a different height, and the seventh cam surface 117 and ninth cam surface 119.

[0093] In this way, the first path portion 91, the second path portion 92, the third path portion 93, and the fourth path portion 94 for guiding the guided portion 76 are provided with the restricting portions 120 (the protrusions 141, the first steps 121, and the second steps 122). Therefore, the guided portion 76 can be guided toward a predetermined path.

[0094] (Operations when Replacing Bobbin) Next, an operation when the bobbin B for winding the yarn Y is replaced after the winding of the yarn Y onto the bobbin B is completed will be described.

[0095] Fig. 9 is a diagram showing a state in which the yarn catch guide 50 of the yarn threading device 40 is in a capturing position PA1. Fig. 10 is a diagram showing a state in which the yarn catch guide 50 of the yarn threading device 40 is in a yarn pull-up position PA2. Fig. 11 is a diagram showing a state in which the yarn catch guide 50 of the yarn threading device 40 is in a yarn release position PA3. Fig. 12 is a diagram showing a state in which the yarn catch guide 50 of the yarn threading device 40 is in a standby position PA4. In Figs. 9 to 12, (a) is a diagram showing the traverse device 30 and the yarn threading device 40 as seen from the front, similar to Fig. 2, (b) is a diagram showing the traverse device 30 and the yarn threading device 40 as seen from the direction D1 in (a), and (c) is a partial cross-sectional view of the traverse device 30 and the yarn threading device 40 as seen from the front (axial direction of the bobbin B).

[0096] As shown in Figure 12, while the yarn Y is being wound onto the bobbin B, the yarn catching guide 50 is switched to a standby position PA4. In the standby position PA4, the yarn catching guide 50 is located at a standby position that is spaced apart from the contact locus 32R in the axial direction of the bobbin B. In this embodiment, the standby position and the yarn pulling position refer to positions in the axial direction of the bobbin. In this embodiment, the position where the caught yarn Y is hooked onto the thread fixing portion S of the bobbin B (the yarn pulling position) and the standby position are the same position in the axial direction of the bobbin. However, the positional relationship between the standby position and the yarn pulling position is not limited to this, and the standby position and the yarn pulling position may be different positions in the axial direction of the bobbin.

[0097] When winding of the yarn Y onto the bobbin B is completed, the turret 21 is rotated to exchange the positions of the two bobbin holders 22. Next, as shown in Fig. 9, the drive unit 61 is driven to move the yarn catching guide 50 into the traverse range R, thereby switching the yarn catching guide 50 to a catching position PA1. The catching position PA1 is a position in which the yarn catching guide 50 has been moved to a position where it can catch the yarn Y that is reciprocated by the traverse device 30.

[0098] 7(a) and 7(e), when the guided portion 76 is guided from the fourth connection portion 104 (fourth cam position) through the fourth path portion 94 to the first connection portion 101 (first cam position), the posture of the insertion portion 73 changes not only in the front-to-rear direction but also around the axis 73a. As a result, the yarn catching guide 50 is switched from a standby posture PA4 in which it is spaced apart from the traverse guide 31 to a catching posture PA1 while gradually approaching the traverse guide 31.

[0099] 9, when the yarn catching guide 50 assumes the catching position PA1, the yarn Y, which is reciprocated by the traverse device 30, comes into contact with the yarn catching guide 50. The abutting yarn Y is guided along the inclination of the yarn introduction guide 54 to the open section 52 of the catching section 51, and enters the catching section 51 from the open section 52 to be caught.

[0100] 10, the driving unit 61 is driven to move the yarn catching guide 50 forward, thereby switching the yarn catching guide 50 to the yarn shifting position PA2. In the yarn shifting position PA2, the yarn catching guide 50 moves the yarn Y caught in the catching position PA1 to a position where it is hooked onto the yarn fixing portion S of the bobbin B.

[0101] As shown in FIGS. 7( a) and 7(b), the first connection portion 101 (first cam position) (FIG. 7(a)) and the second connection portion 102 (second cam position) (FIG. 7(b)) are arranged along the front-rear direction. Therefore, when the guided portion 76 is guided from the first connection portion 101 (first cam position) through the first path portion 91 to the second connection portion 102 (second cam position), the position of the insertion portion 73 changes only in the front-rear direction. Therefore, the yarn catching guide 50 is switched from the catching position PA1 to the yarn shifting position PA2 while remaining close to the traverse guide 31. This allows the yarn catching guide 50 to be switched to the yarn shifting position PA2 while still capturing the yarn Y. The position of the yarn shifting position PA2 in the axial direction of the bobbin B (yarn shifting position) is a position where the yarn Y can be hooked on the yarn fixing portion S formed on the bobbin B.

[0102] As shown in Figure 4, by holding the yarn catching guide 50 in the yarn shifting position PA2, the yarn Y is hooked and fixed on the yarn fixing part S, and the yarn is threaded onto a new bobbin B. A straight winding YB is formed on the front end of the bobbin B. After the straight winding YB is formed, the driving part 61 moves the yarn catching guide 50 rearward.

[0103] 11, the drive unit 61 is driven to move the yarn catching guide 50 rearward, thereby switching the yarn catching guide 50 to the yarn release position PA3. The yarn release position PA3 is a position in which the yarn catching guide 50 is moved between the yarn shifting position PA2 and the capturing position PA1 in the axial direction of the bobbin B, and the yarn catching guide 50 is moved further away from the traverse guide 31 than in the yarn shifting position PA2, thereby releasing the yarn Y captured in the capturing position PA1.

[0104] When the drive unit 61 is driven to move the yarn catch guide 50 rearward, the guided portion 76 is first guided in parallel in the front-to-rear direction from the second connection portion 102 (second cam position), as shown in Figure 7(c). As a result, the yarn catch guide 50 moves parallel to the rear while capturing the yarn Y. A spiral tail winding YT is formed on the bobbin B between the portion where the straight winding YB is formed and the portion where the yarn Y is wound (the portion shown by the dashed line in Figure 4).

[0105] As shown in Figures 7(b) and 7(c), the second connection portion 102 (second cam position) (Figure 7(b)) and the third connection portion 103 (third cam position) (Figure 7(c)) are not only different in position in the front-to-rear direction, but also in a direction intersecting the front-to-rear direction. Therefore, when the guided portion 76 is guided from the second connection portion 102 (second cam position) through the second path portion 92 to the third connection portion 103 (third cam position), the posture of the insertion portion 73 changes not only in the front-to-rear direction but also around the axis 73a. As a result, the yarn catching guide 50 is switched to the yarn removing position PA3 while swinging from a state close to the traverse guide 31 to a state gradually moving away from it.

[0106] When the yarn catch guide 50 swings away from the traverse guide 31, the position of the yarn Y changes relative to the yarn catch guide 50, as shown in Fig. 11(c) . The yarn Y moves to an opening 52 formed in the catch portion 51 of the yarn catch guide 50, and is released from the yarn catch guide 50 by exiting the catch portion 51 through the opening 52. The yarn Y released from the yarn catch guide 50 is caught by the blade guides 35, 36, and is wound onto the bobbin B while being reciprocated by the traverse device 30.

[0107] When the yarn Y is released from the yarn catching guide 50, the drive unit 61 is driven to move the yarn catching guide 50 forward, as shown in Fig. 12, thereby switching the yarn catching guide 50 to a standby position PA4. The standby position PA4 is a position in which, with the yarn released, the yarn catching guide 50 is moved to a standby position and is further away from the traverse guide 31 than the yarn shifting position PA2. In other words, the standby position PA4 is a position in which, with the yarn released, the yarn catching guide 50 is moved to a standby position that is further away from the contact locus 32R in the axial direction of the bobbin B, and is moved higher with respect to the contact locus 32R than the yarn shifting position PA2.

[0108] Here, as shown in Figures 7(c) and 7(d), the third connection portion 103 (third cam position) (Figure 7(c)) and the fourth connection portion 104 (fourth cam position) (Figure 7(d)) ​​are not only different in position in the front-rear direction, but also in the direction intersecting the front-rear direction. Therefore, when the guided portion 76 is guided from the third connection portion 103 (third cam position) through the third path portion 93 to the fourth connection portion 104 (fourth cam position), the change in the position of the insertion portion 73 around the axis 73a becomes even greater. Therefore, the yarn catching guide 50 is switched to the standby position PA4 while swinging so as to move further away from the traverse guide 31. In the standby position PA4, the yarn catching guide 50 is farther away from the traverse guide 31 than in the yarn shifting position PA2.

[0109] Fig. 13 is a diagram illustrating the distance from the yarn path at the standby position of the yarn catch guide 50. Fig. 13 shows the relationship between the position of the traverse guide 31 and the yarn path at the end of the traverse range R in the yarn shifting position PA2 and the standby position PA4.

[0110] 13(b), in the yarn shifting position PA2, the yarn catching guide 50 is moved to the yarn shifting position while remaining close to the traverse guide 31. In contrast, in the standby position PA4, the yarn catching guide 50 is moved upward and moved to the standby position in a position where the yarn catching guide 50 is further away from the traverse guide 31 than in the yarn shifting position PA2. In this embodiment, the standby position and the yarn shifting position are the same position in the axial direction of the bobbin B.

[0111] The yarn Y reciprocated by the traverse device 30 reciprocates around a fulcrum guide 27 located upstream in the running direction DT of the yarn Y. As the yarn Y travels from the fulcrum guide 27 toward the guide end 32 of the traverse guide 31, the yarn Y changes its inclination angle θ1 relative to the guide end 32. At both ends of the traverse range R, the inclination angle θ1 of the yarn Y relative to the extending direction of the guide end 32 (the axial direction of the bobbin B) is greatest.

[0112] Therefore, upstream of the guide end portion 32 in the running direction DT of the yarn Y, even if the position in the axial direction of the bobbin B is the same, the distance between the yarn catching guide 50 and the running yarn Y becomes smaller at a position closer to the traverse guide 31. Also, even if the position in the axial direction of the bobbin B is the same, the distance between the yarn catching guide 50 and the running yarn Y becomes larger as the bobbin B moves away from the traverse guide 31.

[0113] That is, upstream of the traverse guide 31 in the running direction DT of the yarn Y, the yarn catching guide 50 that has been moved to the standby position decreases in distance from the contact locus 32R as viewed from the axial direction of the bobbin B, and the distance between the yarn catching guide 50 and the running yarn Y decreases. Also, the distance between the yarn catching guide 50 and the running yarn Y increases as the distance between the contact locus 32R as viewed from the axial direction of the bobbin B increases.

[0114] 13(b), the positions of the yarn catching guide 50 in the yarn shifting position PA2 and the standby position PA4 are the same in the axial direction of the bobbin B (yarn shifting position and standby position). However, the yarn catching guide 50 in the standby position PA4 is farther away from the traverse guide 31 than the yarn catching guide 50 in the yarn shifting position PA2. This is because the yarn catching guide 50 in the standby position PA4 is positioned higher in the axial direction of the bobbin B than the yarn catching guide 50 in the yarn shifting position PA2, and its distance to the contact locus 32R is greater. As a result, the distance L2 between the yarn catching guide 50 and the yarn path in the standby position PA4 is greater than the distance L1 between the yarn catching guide 50 and the yarn path in the yarn shifting position PA2.

[0115] In this way, the yarn catching guide 50, in the standby position PA4, is positioned farther away from the contact locus 32R than in the yarn shifting position PA2, thereby ensuring a sufficient distance from the yarn path.

[0116] [Modifications] The embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. The technical scope of the present invention is not interpreted solely by the above-described embodiments, but is defined by the claims. The technical scope of the present invention also includes all modifications within the scope and meaning equivalent to the claims.

[0117] In the present embodiment, the position of the yarn catching guide 50 in the axial direction of the bobbin B is the same in the yarn shifting position PA2 and the standby position PA4, but this is not limiting. The position (yarn shifting position) in the axial direction of the bobbin B for the yarn shifting position PA2 and the position (standby position) in the axial direction of the bobbin B may be different. For example, the position (standby position) for the standby position PA4 in the axial direction of the bobbin B may be set farther from the contact locus 32R than the position (yarn shifting position) in the yarn shifting position PA2.

[0118] In this embodiment, a cam member is used in the guide portion, but this is not limiting. For example, a path portion for guiding the guided portion may be formed directly on the guide portion main body. Also, some of the path portions may be formed with a cam member, and the remaining path portions may be formed directly on the guide portion main body.

[0119] In this embodiment, the cam member is provided with restricting portions (first restricting portion, second restricting portion, third restricting portion) that restrict the path, and the second restricting portion and the third restricting portion are formed by steps on the cam surface, but other means may be used. For example, the second restricting portion and the third restricting portion may be formed by a protrusion formed on the cam surface and a guided groove formed in the guided portion, similar to the first restricting portion.

[0120] In the present embodiment, the posture of the insertion part held by the guide part main body is swung around an axis to switch the posture of the yarn catch guide between a posture close to the traverse guide and a posture away from the traverse guide, but this is not limited to this. The posture of the yarn catch guide may be switched between a posture close to the traverse guide and a posture away from the traverse guide using another configuration. For example, the posture of the yarn catch guide may be switched between a posture close to the traverse guide and a posture away from the traverse guide without being swung. For example, a mechanism that operates a link mechanism with an actuator can be used as a mechanism that switches the posture of the yarn catch guide between a yarn-pushing posture and a standby posture that is further away from the contact locus than the yarn-pushing posture. Industrial application fields

[0121] The present invention is applicable to a take-up winding apparatus that winds a plurality of yarns spun from a spinning device onto a plurality of bobbins to form a plurality of packages.

[0122] 100 Spinning winding device 2 Spinning device 22 Bobbin holder 27 Fulcrum guide 30 Traverse device 31 Traverse guide 32 Guide end 40 Yarn hooking device 50 Yarn catching guide 60 Guide driving member 61 Driving unit 70 Guide unit 73a Shaft (swinging shaft) 76 Guided unit 91 First path portion 92 Second path portion 93 Third path portion 94 Fourth path portion 101 First connecting portion (first cam position) 102 Second connecting portion (second cam position) 103 Third connecting portion (third cam position) 104 Fourth connecting portion (fourth cam position) 120 Restricting portion 121 Second restricting portion (first step) 122 Third restricting portion (second step) 141 First restricting portion (projection) Y Yarn B Bobbin S Thread fixing part R Traverse range PA1 catching position PA2 thread pulling position PA3 thread releasing position PA4 standby position

Claims

1. A spinning winding device that winds multiple yarns spun from a spinning device onto multiple bobbins, comprising: a bobbin holder that holds the multiple bobbins lined up in the axial direction; multiple fulcrum guides that feed out the multiple yarns towards the multiple bobbins; multiple traverse devices having multiple traverse guides that guide the multiple yarns fed from the multiple fulcrum guides so that they move back and forth in the axial direction of the multiple bobbins around the multiple fulcrum guides; and multiple threading devices that hook the multiple yarns on thread fixing sections formed on the multiple bobbins, wherein each of the multiple threading devices comprises: a yarn capturing guide that captures and releases the yarn reciprocated by the traverse device, upstream of the traverse guide in the running direction of the yarn; a yarn shifting position that moves the posture of the yarn capturing guide to a position where the captured yarn is hooked on the yarn fixing section of the bobbin, with a contact trajectory defined by the traverse guide and the contact position of the traverse guide reciprocating in the axial direction of the bobbin; and a guide drive member which, in a yarn released state, switches to a standby position which is farther away from the contact locus than the yarn pulling position, wherein by switching to the standby position, the yarn catch guide is moved away from the contact locus in the axial direction of the bobbin and is also moved away from the contact locus as viewed from the axial direction of the bobbin.

2. The spinning winding apparatus according to claim 1, wherein the standby posture is a posture in which the yarn capturing guide is moved to a standby position away from the contact locus in the axial direction of the bobbin and is moved upward relative to the contact locus as viewed in the axial direction of the bobbin relative to the yarn shifting posture.

3. The spinning winding device according to claim 1 or 2, wherein the guide drive member switches the posture of the yarn capturing guide to a capturing posture that moves the yarn reciprocated by the traverse device to a position where it can capture the yarn; switches from the capturing posture to the yarn pull-up posture that moves the captured yarn to a position where it is hung on the yarn fixing portion of the bobbin; switches from the yarn pull-up posture to a yarn release posture that moves the yarn between the yarn pull-up posture and the capturing posture in the axial direction of the bobbin and releases the yarn captured in the capturing posture; and switches from the yarn release posture to the standby posture.

4. The yarn spinning winding apparatus according to claim 3, wherein the guide drive member comprises: a drive section which drives the yarn capturing guide in the axial direction of the bobbin; and a guide section which guides the yarn capturing guide in the axial direction of the bobbin, the guide section comprising: a first path section which guides the yarn capturing guide to switch from the capturing position to the yarn pull-up position; a second path section which guides the yarn capturing guide to switch from the yarn pull-up position to the yarn removal position; a third path section which guides the yarn capturing guide to switch from the yarn removal position to the standby position; and a fourth path section which guides the yarn capturing guide to switch from the standby position to the capturing position.

5. The spinning winding device according to claim 4, wherein the guide drive member supports the yarn capturing guide so as to be movable in the axial direction of the bobbin and so as to be swingable about a swing axis extending in the axial direction of the bobbin, and the guide section guides the yarn capturing guide in the axial direction of the bobbin and swings the yarn capturing guide so as to change its distance from the contact locus as viewed in the axial direction of the bobbin, thereby switching the yarn capturing guide to the yarn removal position and the standby position which have a larger distance from the contact locus as viewed in the axial direction of the bobbin than the yarn pull-up position.

6. A spinning winding apparatus as claimed in claim 4 or claim 5, wherein the yarn capturing guide is connected to a guided portion guided by the guiding portion, the guiding portion has a regulating portion which regulates a path along which the guided portion is guided so as to guide the guided portion from the first path portion to the second path portion, from the second path portion to the third path portion, and from the third path portion to the fourth path portion.

7. The spinning winding apparatus according to claim 6, wherein the regulating portion comprises: a first regulating portion that allows the guided portion to enter toward the first path portion from a first connection portion between the first path portion and the fourth path portion and prevents the guided portion from entering toward the fourth path portion; a second regulating portion that allows the guided portion to enter toward the second path portion from a second connection portion between the first path portion and the second path portion and prevents the guided portion from entering toward the first path portion; and a third regulating portion that allows the guided portion to enter toward the third path portion from a third connection portion between the second path portion and the third path portion and prevents the guided portion from entering toward the second path portion.

8. A spinning winding apparatus as described in claim 7, wherein the second regulating section is constituted by a step formed between the first path section and the second path section, and the third regulating section is constituted by a step formed between the second path section and the third path section.

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