Description:BACKGROUND
Technical Field
[0001]
The present invention relates to a winding device that winds a yarn around a winding bobbin to form a package.
Related Art
[0002]
There are known winding devices adapted to wind a yarn supplied from a yarn supplying section such as a yarn supplying bobbin around a winding bobbin to form a package of the yarn. This winding device is provided with a cradle having a pair of arms that hold the winding bobbin therebetween such that the winding bobbin can rotate about a predetermined rotational axis, and a lift mechanism that lifts the cradle in accordance with progress of winding of the yarn around the winding bobbin (see, for example, JP 2013-67470 A). The winding device is also provided with a roller that comes in contact with a side surface of the winding bobbin or package.
[0003]
In the winding device described above, winding bobbins having different shapes (for example, a truncated cone shape (cone shape) and a cylindrical shape) can be used. In order to bring the side surface of a winding bobbin or package having a different shape into contact with the roller, the cradle is coupled to the lift mechanism such that an angle of the cradle with respect to the roller is adjustable.

SUMMARY
[0004]
The winding device is adapted to use the winding bobbins of different shapes by changing the angle of the cradle with respect to the roller. However, in the conventional winding devices, it takes time to adjust the cradle when changing the winding bobbin to a winding bobbin having a different shape.
[0005]
An object of the present invention is to reduce an amount of adjustment work on an operator when changing the winding bobbin to a winding bobbin having a different shape in a winding device.
[0006]
Hereinafter, multiple aspects will be described as means for solving the problem. These aspects can be combined in a freely selected manner as required.
A winding device according to one aspect of the present invention is a device that winds a yarn around a winding bobbin to form a package. The winding device includes a cradle, a roller, a lift mechanism, a coupling section, a first stopper, a second stopper, a first movement restricting section, and a second movement restricting section. The cradle includes a first arm and a second arm that are configured to rotatably hold the winding bobbin therebetween. The roller is configured to come in contact with the package. The lift mechanism is configured to separate the cradle from the roller in accordance with progress of winding of the yarn around the winding bobbin. The coupling section is configured to couple the cradle with the lift mechanism.
[0007]
The first stopper protrudes from the first arm toward the roller with respect to a rotational axis of the winding bobbin. The second stopper protrudes from the second arm toward the roller with respect to the rotational axis of the winding bobbin. The first movement restricting section restricts movement of the first arm in an approaching direction to the roller by contact with the first stopper. The second movement restricting section restricts movement of the second arm in an approaching direction to the roller by contact with the second stopper. The coupling section includes an angle adjusting mechanism. The angle adjusting mechanism is configured to adjust an angle of the rotational axis of the winding bobbin with respect to a rotational axis of the roller.
[0008]
In the winding device described above, the second stopper is not in contact with the second movement restricting section when the first stopper comes in contact with the first movement restricting section. On the other hand, the first stopper is not in contact with the first movement restricting section when the second stopper comes in contact with the second movement restricting section.
[0009]
For example, when the cradle approaches the roller with the rotational axis of the winding bobbin inclined with respect to a contact surface of the roller, the first stopper comes in contact with the first movement restricting section. At this time, the second stopper is not in contact with the second movement restricting section. On the other hand, when the cradle approaches the roller with the rotational axis of the winding bobbin parallel to the contact surface of the roller, the second stopper comes in contact with the second movement restricting section. At this time, the first stopper is not in contact with the first movement restricting section.
[0010]
In the winding device described above, the cradle is provided with the first stopper and the second stopper such that the second stopper is not in contact with the second movement restricting section when the first stopper comes in contact with the first movement restricting section, and the first stopper is not in contact with the first movement restricting section when the second stopper comes in contact with the second movement restricting section.
[0011]
Thus, for example, in a case where a winding bobbin having a truncated cone shape is used, when the cradle moves in the approaching direction to the roller, the first stopper comes in contact with the first movement restricting section while the second stopper is not in contact with the second movement restricting section. In this manner, the first stopper and the first movement restricting section can prevent the cradle from excessively approaching the roller. On the other hand, for example, in a case where a winding bobbin having a cylindrical shape is used, when the cradle moves in the approaching direction to the roller, the second stopper comes in contact with the second movement restricting section while the first stopper is not in contact with the first movement restricting section. In this manner, the second stopper and the second movement restricting section can prevent the cradle from excessively approaching the roller. That is, providing the first stopper and the second stopper on the cradle eliminates the need to adjust a protruding amount of the stopper from the cradle every time the winding bobbin is changed to a winding bobbin having a different shape. That is, an amount of adjustment work for the winding device when changing the winding bobbin to a winding bobbin having a different shape can be reduced.
[0012]
Further, in the winding device described above, the angle adjusting mechanism that adjusts the angle of the rotational axis of the winding bobbin with respect to the rotational axis of the roller is provided on the coupling section that couples the cradle with the lift mechanism. Thus, a center position of traverse of the yarn and the center of the winding bobbin can be easily matched, and the cradle can be prevented from colliding with another member.
[0013]
In the winding device described above, the first movement restricting section may have a plane perpendicular to the first stopper. This can more reliably prevent the first arm of the cradle from excessively approaching the roller.
[0014]
In the winding device described above, the second movement restricting section may have a plane perpendicular to the second stopper. This can more reliably prevent the second arm of the cradle from excessively approaching the roller.
[0015]
In the winding device described above, the first stopper may be provided at a position different from a portion for holding the winding bobbin in an extending direction of the first arm. This makes it possible to widely adjust a protruding amount of the first stopper from the first arm.
[0016]
In the winding device described above, the second stopper may be provided at a position different from a portion for holding the winding bobbin in an extending direction of the second arm. This makes it possible to widely adjust a protruding amount of the second stopper from the second arm.
[0017]
In the winding device described above, the first stopper may include a first axis section and a first nut section. The first axis section has a first screw portion screwed to the first arm. The first nut section is screwed to the first screw portion. Thus, the protruding amount of the first stopper from the first arm can be adjusted by a simple method of rotating the first axis section with respect to the first arm.
[0018]
In the winding device described above, the second stopper may include a second axis section and a second nut section. The second axis section has a second screw portion screwed to the second arm. The second nut section is screwed to the second screw portion. Thus, the protruding amount of the second stopper from the second arm can be adjusted by a simple method of rotating the second axis section with respect to the second arm.
[0019]
In the winding device described above, the coupling section may include a moving mechanism. The moving mechanism is a mechanism different from the angle adjusting mechanism described above and enables the cradle to move with respect to the lift mechanism along a direction of the rotational axis of the roller. This makes it possible to independently adjust the position of the cradle with respect to the lift mechanism and the angle of the cradle with respect to the roller. As a result, the center position of the traverse of the yarn and the center of the winding bobbin can be more easily matched, and the cradle can be prevented from colliding with another member.
[0020]
The winding device described above may further include an arm-type traverse mechanism that is configured to cause an arm that swings side to side to traverse the yarn to be wound into the package. In addition, the cradle may include a motor that is configured to rotate the winding bobbin about the rotational axis of the winding bobbin. As a result, in the winding device that rotates the winding bobbin and traverses the yarn by the arm-type traverse mechanism, an amount of adjustment work for the winding device when changing the winding bobbin to a winding bobbin having a different shape can be reduced.
[0021]
Since it is not necessary to adjust the protruding amount of the stopper, which restricts movement of the cradle in the approaching direction to the roller, from the cradle every time the winding bobbin is changed to a winding bobbin having a different shape, the amount of adjustment work for the winding device when changing the winding bobbin to a winding bobbin having a different shape can be reduced.

BRIEF DESCRIPTION OF DRAWINGS
[0022]
FIG. 1 is a view illustrating a configuration of a yarn winding device;
FIG. 2 is a perspective view of a winding section as viewed from a second arm side of a cradle;
FIG. 3 is a perspective view of the winding section as viewed from a first arm side of the cradle;
FIG. 4 is an enlarged view of a second movement restricting section;
FIG. 5 is an enlarged view of a coupling section; and
FIG. 6 is an enlarged view of a first movement restricting section.

DETAILED DESCRIPTION
[0023]
1. First Embodiment
(1) Entire Yarn Winding Device
A yarn winding device 100 will be described with reference to FIG. 1. FIG. 1 is a view illustrating a configuration of the yarn winding device 100. The yarn winding device 100 is a device that is configured to wind a yarn 10 supplied from a yarn supplying section 1 around a winding bobbin 21 to form a package 20. The yarn winding device 100 includes the yarn supplying section 1, a yarn processing executing section 3, and a winding section 5.
[0024]
In the yarn winding device 100, the yarn supplying section 1, the yarn processing executing section 3, and the winding section 5 are arranged in this order from upstream to downstream in a travelling direction of the yarn 10. The yarn supplying section 1 supplies a yarn to form the package 20. The yarn processing executing section 3 causes the yarn 10 supplied from the yarn supplying section 1 to travel and supplies the yarn 10 to the winding section 5. The winding section 5 winds the yarn 10 supplied from the yarn processing executing section 3 around the winding bobbin 21 to form the package 20.
[0025]
(2) Yarn Supplying Section
Hereinafter, details of the yarn supplying section 1, the yarn processing executing section 3, and the winding section 5 will be described. The yarn supplying section 1 unwinds the yarn 10 from the yarn supplying bobbin 11 to supply the yarn 10. The yarn supplying section 1 includes an unwinding assisting device 13. The unwinding assisting device 13 assists the unwinding of the yarn 10 from the yarn supplying bobbin 11 by lowering a regulating member 15 in conjunction with the unwinding of the yarn 10 from the yarn supplying bobbin 11. The regulating member 15 is brought into contact with a balloon of the yarn unwound from the yarn supplying bobbin 11 formed above the yarn supplying bobbin 11 due to rotation and centrifugal force, and applies an appropriate tension to the balloon, thus assisting the unwinding of the yarn.
[0026]
(3) Yarn Processing Executing Section
The yarn processing executing section 3 causes the yarn 10 supplied from the yarn supplying section 1 to travel and supplies the yarn 10 to the winding section 5. The yarn processing executing section 3 mainly includes a tension applying device 31, a splicer 33, and a yarn clearer 35.
[0027]
The tension applying device 31 is arranged between the yarn supplying section 1 and the splicer 33 in the travelling direction of the yarn 10. In other words, the tension applying device 31 is arranged on the upstream side of the travelling direction of the yarn 10 in the yarn processing executing section 3. The tension applying device 31 applies a predetermined tension on the travelling yarn 10.
[0028]
The splicer 33 is arranged between the tension applying device 31 and the yarn clearer 35 in the travelling direction of the yarn 10. When the travelling yarn 10 is broken (yarn breakage) or when the yarn 10 is cut (yarn cutting), the splicer 33 joins the yarn 10 on the yarn supplying section 1 side and the yarn 10 on the winding section 5 side.
[0029]
The yarn 10 on the yarn supplying section 1 side and the yarn 10 on the winding section 5 side are guided into the splicer 33 when the yarns are joined by the splicer 33. For this purpose, the yarn processing executing section 3 includes a lower yarn catching section 37 and an upper yarn catching section 39.
[0030]
The lower yarn catching section 37 is arranged upstream of the splicer 33. A suction port 37a is provided at a tip end of the lower yarn catching section 37. The lower yarn catching section 37 is connected to a suction source. The lower yarn catching section 37 suctions and catches the yarn 10 on the yarn supplying bobbin 11 side by causing the suction source to generate a suction flow at the suction port 37a.
[0031]
The upper yarn catching section 39 is arranged downstream of the splicer 33. A suction mouth 39a is provided at a tip end of the upper yarn catching section 39. The upper yarn catching section 39 is connected to a suction source. The upper yarn catching section 39 suctions and catches the yarn 10 on the package 20 side by causing the suction source to generate a suction flow at the suction mouth 39a.
[0032]
With such a configuration, at the time of yarn cutting or yarn breakage, the suction mouth 39a moves from a standby position illustrated in FIG. 1 to a catching position in the vicinity of the package 20 by swinging the upper yarn catching section 39, and suctions and catches the yarn 10 coming out of the package 20 by rotating the package 20 backward. Then, the suction mouth 39a moves from the catching position to the standby position, and the yarn 10 on the package 20 side is guided into the splicer 33. Further, the suction port 37a of the lower yarn catching section 37 suctions and catches the yarn 10 on the yarn supplying bobbin 11 side at a catching position illustrated in FIG. 1, and then moves from the catching position to a guiding position. Thus, the yarn 10 on the yarn supplying bobbin 11 side is guided into the splicer 33. The splicer 33 joins the ends of the two guided yarns 10 by a predetermined yarn joining operation.
[0033]
The yarn clearer 35 is arranged between the splicer 33 and the winding section 5 in the travelling direction of the yarn 10. The yarn clearer 35 detects a state of the yarn 10 travelling between the yarn supplying section 1 and the package 20. The yarn clearer 35 detects the thickness of the travelling yarn 10 and a foreign substance, and detects a yarn defect based on a detection result relating to the thickness of the yarn 10 and/or the foreign substance. The yarn clearer 35 is provided with a cutter that cuts the yarn 10 when a yarn defect is detected. In addition, the yarn clearer 35 detects travelling of the yarn 10, and can detect yarn breakage in the yarn 10 when the travelling of the yarn 10 is not detected. When the yarn clearer 35 detects a yarn defect and the yarn 10 is cut, or when the yarn clearer 35 detects yarn breakage, the yarn joining operation described above is executed.
[0034]
The yarn processing executing section 3 may be further provided with another device adapted to execute a predetermined process on the yarn 10, such as a travelling speed measuring device adapted to measure a travelling speed of the yarn 10 and a waxing device adapted to apply wax to the yarn 10.
[0035]
(4) Winding Section
Hereinafter, a configuration of the winding section 5 will be described with reference to FIGS. 1 to 3. FIG. 2 is a perspective view of the winding section 5 as viewed from a second arm 51b side of a cradle 51. FIG. 3 is a perspective view of the winding section 5 as viewed from a first arm 51a side of the cradle 51. The winding section 5 winds the yarn 10 having passed through the yarn processing executing section 3 around the winding bobbin 21 to form the package 20.
[0036]
The winding section 5 can form a package 20 having a different shape. The winding bobbin 21 has a truncated cone shape (cone shape) having different diameters at both ends, or a cylindrical shape having the same diameter at both ends. The winding bobbin 21 having a truncated cone shape includes a plurality of types of winding bobbins of which inclination angles are different. The winding section 5 includes the cradle 51, a lift mechanism 52, an arm-type traverse mechanism 53, and a roller 54.
[0037]
The cradle 51 supports the winding bobbin 21 detachably and rotatably about a rotational axis A1. Specifically, the cradle 51 includes a first arm 51a, a second arm 51b, and an arm connecting section 51c. The winding bobbin 21 is held between the first arm 51a and the second arm 51b and is supported by the cradle 51.
[0038]
A first bobbin holding section B1 that holds one end portion of the winding bobbin 21 is provided at a distal end portion of the first arm 51a of the cradle 51. The first arm 51a is also provided with a first stopper 55a. The first stopper 55a is provided to protrude from a lower portion of the first arm 51a toward the roller 54 with respect to the rotational axis A1 of the winding bobbin 21. The first stopper 55a comes in contact with a first movement restricting section 58a provided on the arm-type traverse mechanism 53, thereby restricting the first arm 51a (that is, the cradle 51) from further moving in an approaching direction to the roller 54. Here, the “approaching direction” means one direction of rotation directions about a pivot axis A2 of the lift mechanism 52.
[0039]
The first stopper 55a is secured to the first arm 51a by being screwed to the first arm 51a (that is, attached to the first arm 51a by screwing). Thus, the first stopper 55a includes a first axis section 551 having a threaded first screw portion on its base end side to be screwed to the first arm 51a. In addition, a first nut section 552 screwed to the first screw portion is provided on the first screw portion of the first stopper 55a. Furthermore, a first rubber member 553 that comes in contact with the first movement restricting section 58a is provided on a tip end side of the first axis section 551.
[0040]
In the above-described configuration, a protruding amount of the first stopper 55a from the first arm 51a can be easily adjusted by adjusting a screwing amount of the first stopper 55a into the first arm 51a. In addition, the first stopper 55a whose protruding amount has been adjusted can be secured to the first arm 51a by moving the first nut section 552 toward the first arm 51a with the protruding amount of the first stopper 55a from the first arm 51a adjusted.
[0041]
The first stopper 55a is provided at a position different from the end portion where the first bobbin holding section B1 is provided in an extending direction of the first arm 51a. This can prevent the first stopper 55a and the first bobbin holding section B1 from interfering with each other when the first stopper 55a is screwed into the first arm 51a. That is, an adjustment range of the protruding amount of the first stopper 55a can be widened because the screwing amount of the first stopper 55a into the first arm 51a is not limited by the presence of the first bobbin holding section B1.
[0042]
The first stopper 55a is preferably provided near the end portion. Providing the first stopper 55a at a position far from a pivot center of the cradle 51 (center around which the cradle 51 moves in accordance with an increase in a wound diameter of the package 20) facilitates the adjustment work. As a comparative example, in a case where the first stopper 55a is provided at the pivot center of the cradle 51 and is screwed, a change amount of inclination of the cradle 51 becomes large with respect to a change amount of the screw length, which causes fine adjustment to be more difficult.
[0043]
A second bobbin holding section B2 that holds the other end portion of the winding bobbin 21 is provided at a distal end portion of the second arm 51b. A line connecting the centers of the first bobbin holding section B1 of the first arm 51a and the second bobbin holding section B2 of the second arm 51b is the rotational axis A1 of the winding bobbin 21.
[0044]
The second arm 51b is also provided with a second stopper 55b. The second stopper 55b is provided to protrude from a lower portion of the second arm 51b toward the roller 54 with respect to the rotational axis A1 of the winding bobbin 21. The second stopper 55b comes in contact with a second movement restricting section 58b provided on the lift mechanism 52, thereby restricting the second arm 51b (that is, the cradle 51) from further moving in an approaching direction to the roller 54.
[0045]
The second stopper 55b is secured to the second arm 51b by being screwed to the second arm 51b (that is, attached to the second arm 51b by screwing). Thus, the second stopper 55b includes a second axis section 554 having a threaded second screw portion on its base end side to be screwed to the second arm 51b. In addition, a second nut section 555 screwed to the second screw portion is provided on the second screw portion of the second stopper 55b. Furthermore, a second rubber member 556 is provided on a tip end side of the second axis section 554.
[0046]
In the above-described configuration, a protruding amount of the second stopper 55b from the second arm 51b can be easily adjusted by adjusting a screwing amount of the second stopper 55b into the second arm 51b. In addition, the second stopper 55b whose protruding amount has been adjusted can be secured to the second arm 51b by moving the second nut section 555 toward the second arm 51b with the protruding amount of the second stopper 55b from the second arm 51b adjusted.
[0047]
The second stopper 55b is provided at a position different from the end portion where the second bobbin holding section B2 is provided in an extending direction of the second arm 51b. This can prevent the second stopper 55b and the second bobbin holding section B2 from interfering with each other when the second stopper 55b is screwed into the second arm 51b. That is, an adjustment range of the protruding amount of the second stopper 55b can be widened because the screwing amount of the second stopper 55b into the second arm 51b is not limited by the presence of the second bobbin holding section B2.
[0048]
A package drive motor 56 is attached to the second arm 51b. The package drive motor 56 drives the winding bobbin 21 held by the first bobbin holding section B1 and the second bobbin holding section B2 rotatably about the rotational axis A1 to wind the yarn 10 around the winding bobbin 21. The package drive motor 56 can rotatably drive the package 20 in forward rotation of rotating the package 20 (winding bobbin 21) in a winding direction and in backward rotation of rotating the package 20 in an unwinding direction, which is a direction opposite to the winding direction. An output rotational axis of the package drive motor 56 is coupled to the second bobbin holding section B2 so as to be relatively non-rotatable. That is, the package drive motor 56 rotates the winding bobbin 21 by rotating the second bobbin holding section B2. In this manner, the winding bobbin 21 is rotated by the package drive motor 56 in a so-called direct drive system.
[0049]
The second arm 51b is provided with a support release lever 57. The winding bobbin 21 can be held by the first bobbin holding section B1 and the second bobbin holding section B2 by moving the second bobbin holding section B2 toward the first bobbin holding section B1 using the support release lever 57 while one end of the winding bobbin 21 is in contact with the first bobbin holding section B1.
[0050]
On the other hand, the hold of the winding bobbin 21 by the first bobbin holding section B1 and the second bobbin holding section B2 can be released to remove the winding bobbin 21 (package 20) from the cradle 51 by moving the second bobbin holding section B2 in a separating direction from the first bobbin holding section B1 using the support release lever 57 in a state where the winding bobbin 21 is held by the first bobbin holding section B1 and the second bobbin holding section B2.
[0051]
The arm connecting section 51c connects a proximal end portion of the first arm 51a (end portion on the side opposite to the side where the first bobbin holding section B1 is provided) and a proximal end portion of the second arm 51b (end portion on the side opposite to the side where the second bobbin holding section B2 is provided).
[0052]
The lift mechanism 52 includes the pivot axis A2 around which the lift mechanism 52 swings in accordance with progress of winding of the yarn 10 around the winding bobbin 21, that is, in accordance with the diameter of the package 20. The cradle 51 is coupled to the pivot axis A2. The cradle 51 coupled to the pivot axis A2 moves away from the roller 54 (that is, the cradle 51 is lifted) or moves closer to the roller 54 in accordance with the diameter of the package 20.
[0053]
The lift mechanism 52 separates the cradle 51 from the roller 54 in accordance with progress of winding of the yarn 10 around the winding bobbin 21, that is, in accordance with the diameter of the package 20. Thus, an increase in the diameter of the package 20 due to the winding of the yarn 10 around the winding bobbin 21 can be absorbed.
[0054]
The second movement restricting section 58b is provided on an upper surface portion of the lift mechanism 52. When the cradle 51 moves in the approaching direction to the roller 54, the second movement restricting section 58b restricts the movement of the second arm 51b (cradle 51) in the approaching direction to the roller 54 by contact with the second stopper 55b provided on the second arm 51b. At this time, the first stopper 55a is not in contact with the first movement restricting section 58a. Thus, the position of the cradle 51 with respect to the roller 54 in this case is determined by the second stopper 55b.
[0055]
As illustrated in FIG. 4, the second movement restricting section 58b has a second plane P2 that comes in contact with the second rubber member 556 of the second stopper 55b. When the second stopper 55b comes in contact with the second plane P2, the second axis section 554 of the second stopper 55b is perpendicular to the second plane P2. That is, the second stopper 55b comes in contact with the second plane P2 in a perpendicular manner. FIG. 4 is an enlarged view of the second movement restricting section 58b. When the second stopper 55b comes in contact with the second plane P2, the second axis section 554 of the second stopper 55b may not be perpendicular to the second plane P2.
[0056]
The contact of the second stopper 55b with the second plane P2 in a perpendicular manner prevents the second stopper 55b from slipping on the second plane P2, for example. This can prevent the second arm 51b (cradle 51) from further moving from the position of the second arm 51b when the second stopper 55b comes into contact with the second plane P2.
[0057]
The pivot axis A2 of the lift mechanism 52 is provided with a coupling section 59. The coupling section 59 couples the lift mechanism 52 with the cradle 51 by coupling the pivot axis A2 with the cradle 51. The coupling section 59 will be described in detail with reference to FIG. 5. FIG. 5 is an enlarged view of the coupling section 59. The coupling section 59 includes a moving mechanism 59a and an angle adjusting mechanism 59b.
[0058]
The moving mechanism 59a is a mechanism that is configured to move the cradle 51 along a direction of the pivot axis A2 of the lift mechanism 52 to move the cradle 51 with respect to the lift mechanism 52. The position of the cradle 51 with respect to the lift mechanism 52 is adjusted when alignment of the winding bobbin 21 is necessary, for example.
[0059]
The moving mechanism 59a is provided with a hole 591 through which the pivot axis A2 is inserted. This allows the moving mechanism 59a to move along the pivot axis A2 and move in a direction away from or closer to the lift mechanism 52. That is, the position of the moving mechanism 59a with respect to the lift mechanism 52 can be adjusted.
[0060]
An upper portion of the moving mechanism 59a above the portion where the hole 591 is provided is divided into two portions. The upper portion of the moving mechanism 59a is provided with a first screw member 592 penetrating the two portions. Fastening the divided two portions with the first screw member 592 can secure the moving mechanism 59a to the pivot axis A2 to secure the position of the moving mechanism 59a with respect to the lift mechanism 52. On the other hand, loosening the fastening of the two portions with the first screw member 592 allows the moving mechanism 59a to move along the pivot axis A2 to adjust the position of the moving mechanism 59a with respect to the lift mechanism 52.
[0061]
The moving mechanism 59a is coupled to the cradle 51 via the angle adjusting mechanism 59b. Thus, as the moving mechanism 59a moves in the direction away from or closer to the lift mechanism 52, the cradle 51 moves in the direction away from or closer to the lift mechanism 52. That is, the position of the cradle 51 with respect to the lift mechanism 52 can be adjusted by the moving mechanism 59a.
[0062]
The angle adjusting mechanism 59b is a mechanism that is configured to adjust an angle of the rotational axis A1 of the winding bobbin 21 with respect to the rotational axis of the roller 54. This angle is adjusted when the shape of the winding bobbin 21 to be used is changed, for example. The angle adjusting mechanism 59b is provided on the arm connecting section 51c of the cradle 51, and includes an axis member 593, an opening 594, and a second screw member 595.
[0063]
The axis member 593 allows the arm connecting section 51c of the cradle 51 to swing about the axis member 593 with respect to the moving mechanism 59a. The opening 594 is provided to penetrate the arm connecting section 51c. The opening 594 has an arc shape centered on the axis member 593. The second screw member 595 is inserted into the opening 594. The second screw member 595 secures the arm connecting section 51c to the moving mechanism 59a, thus coupling the cradle 51 to the moving mechanism 59a.
[0064]
In addition to the opening 594, a pair of other openings 596 is formed in the angle adjusting mechanism 59b illustrated in FIG. 5. The pair of openings 596 is used to secure a relatively light cradle 51 without the package drive motor 56 to the moving mechanism 59a. When the light cradle 51 is secured, a second screw member 595 is inserted into each of the pair of openings 596, and the two second screw members 595 secure the cradle 51 to the moving mechanism 59a.
[0065]
The reason for using the two screw members when securing the light cradle 51 to the moving mechanism 59a is to secure the cradle 51 firmly to the moving mechanism 59a in order to suppress vibration because the light cradle 51 is likely to vibrate. On the other hand, the heavy cradle 51 provided with the package drive motor 56 hardly vibrates, so that the cradle 51 can be secured to the moving mechanism 59a with the one second screw member 595 inserted into the one opening 594. That is, since the number of screw members to be manipulated can be reduced when the heavy cradle 51 is secured, an amount of adjustment work for the angle of the cradle 51 can be reduced.
[0066]
In the angle adjusting mechanism 59b described above, loosening the fastening of the arm connecting section 51c to the moving mechanism 59a with the second screw member 595 allows the cradle 51 to swing around the axis member 593, so that the angle of the cradle 51 (the angle of the rotational axis A1 of the winding bobbin 21) can be adjusted.
[0067]
As described above, in the coupling section 59, the position of the cradle 51 with respect to the lift mechanism 52 is adjusted by the moving mechanism 59a, and the angle of the cradle 51 (the rotational axis A1 of the winding bobbin 21) with respect to the roller 54 is adjusted by the angle adjusting mechanism 59b. That is, in the coupling section 59, the position of the cradle 51 with respect to the lift mechanism 52 and the angle of the cradle 51 with respect to the roller 54 can be independently adjusted. In other words, in the coupling section 59, the moving mechanism 59a and the angle adjusting mechanism 59b are provided as separate adjusting mechanisms respectively for the position and the angle.
[0068]
As described above, the moving mechanism 59a and the angle adjusting mechanism 59b are provided as separate mechanisms and allow the position and the angle of the cradle 51 to be independently adjusted. Therefore, the position and the angle of the cradle 51 (winding bobbin 21) can be more easily adjusted than when the position and the angle of the cradle are adjusted by one mechanism.
[0069]
The position and the angle of the cradle 51 (winding bobbin 21) are adjusted when the winding bobbin 21 is replaced with a winding bobbin having a different shape. In the adjustment of the position and the angle, the center of the winding bobbin 21 is matched with a center position of traverse of the yarn 10. Matching the center of the winding bobbin 21 with the center position of the traverse of the yarn 10 allows the yarn 10 to be appropriately wound around the winding bobbin 21 even if the shape of the winding bobbin 21 is different. Further, since the position and the angle of the cradle 51 are also adjusted in the adjustment of the position and the angle, the cradle 51 can be prevented from colliding with another member.
[0070]
The description returns to the winding section 5. The arm-type traverse mechanism 53 of the winding section 5 causes a traverse arm 53b that swings side to side to traverse the yarn 10 to be wound around the winding bobbin 21 or into the package 20. The yarn 10 is wound around the winding bobbin 21 or into the package 20 while the yarn 10 is traversed by the arm-type traverse mechanism 53. The arm-type traverse mechanism 53 includes a traverse drive motor 53a, the traverse arm 53b, a guide plate 53c, and a cover member 53d.
[0071]
The traverse drive motor 53a swings the traverse arm 53b side to side in a winding width direction of the package 20 by rotating forward and backward repeatedly at a predetermined cycle. The traverse arm 53b includes a hook-shaped yarn guide section at a distal end. The yarn 10 can be traversed in the winding width direction of the package 20 by the traverse arm 53b swinging side to side with the yarn 10 hooked on the yarn guide section. The guide plate 53c guides the yarn 10 to a traverse area. The traverse arm 53b includes the hook-shaped yarn guide section and a belt, and the belt may be reciprocated by the traverse drive motor 53a.
[0072]
In the arm-type traverse mechanism 53 including the traverse arm 53b described above, a package of any shape can be formed by adjusting an amount of the forward rotation and an amount of the backward rotation of the traverse drive motor 53a (that is, an amount of swing of the traverse arm 53b to one side and an amount of swing to the other side). This increases the opportunities to change the position/inclination angle of the cradle 51.
[0073]
The cover member 53d is a member that covers a part of the traverse drive motor 53a and the traverse arm 53b. The first movement restricting section 58a is provided on a side of the cover member 53d away from the lift mechanism 52. When the cradle 51 moves in the approaching direction to the roller 54, the first movement restricting section 58a restricts the movement of the first arm 51a (cradle 51) in the approaching direction to the roller 54 by contact with the first stopper 55a provided on the first arm 51a. At this time, the second stopper 55b is not in contact with the second movement restricting section 58b. Thus, the position of the cradle 51 with respect to the roller 54 in this case is determined by the first stopper 55a.
[0074]
As illustrated in FIG. 6, the first movement restricting section 58a has a first plane P1 that comes in contact with the first rubber member 553 of the first stopper 55a. When the first stopper 55a comes in contact with the first plane P1, the first axis section 551 of the first stopper 55a is perpendicular to the first plane P1. That is, the first stopper 55a comes in contact with the first plane P1 in a perpendicular manner. FIG. 6 is an enlarged view of the first movement restricting section 58a. When the first stopper 55a comes in contact with the first plane P1, the first axis section 551 of the first stopper 55a may not be perpendicular to the first plane P1.
[0075]
The contact of the first stopper 55a with the first plane P1 in a perpendicular manner prevents the first stopper 55a from slipping on the first plane P1, for example. This can prevent the first arm 51a (cradle 51) from further moving from the position of the first arm 51a when the first stopper 55a comes into contact with the first plane P1.
[0076]
Contact of an outer peripheral surface of the roller 54 with an outer peripheral surface of the package 20 causes the roller 54 to rotate about the rotational axis parallel to a longitudinal direction of the roller 54 as the package 20 rotates. The outer peripheral surface of the roller 54 that comes in contact with the outer peripheral surface of the package 20 will be referred to as a “contact surface”. The roller 54 has a cylindrical shape. The roller 54 has a function of adjusting the shape of the package 20. Further, the roller 54 has a function of holding the traversed yarn 10 at a traversed position and letting the yarn 10 be wound into the package 20.
[0077]
At the start of winding of the yarn 10, a gap is provided between an outer peripheral surface of the winding bobbin 21 and the contact surface of the roller 54. For example, the outer peripheral surface of the winding bobbin 21 and the contact surface of the roller 54 are made parallel before the start of winding of the yarn 10 by adjusting the angle and/or the position of the cradle 51 that supports the winding bobbin 21. At this time, the size of the gap can be set. The size of the gap, which is appropriately set according to the model of the yarn winding device 100, the type of the winding bobbin 21, and the like, can be about 1 mm to 2 mm, for example.
[0078]
As described above, the gap is provided between the outer peripheral surface of the winding bobbin 21 and the contact surface of the roller 54. Thus, the gap can absorb vibration of the winding bobbin 21 even if the winding bobbin 21 vibrates at the start of winding of the yarn 10, for example.
[0079]
The winding section 5 that winds the yarn 10 to form the package 20 has been described above. In the winding section 5, winding bobbins having different shapes can be used. For example, when forming a cylindrical package 20, a winding bobbin 21 having a cylindrical shape as illustrated in FIG. 2 is used. When the winding bobbin 21 having a cylindrical shape is supported by the cradle 51, the angle of the cradle 51 is adjusted such that the rotational axis A1 of the winding bobbin 21 is parallel to the rotational axis of the roller 54 (longitudinal direction of the roller 54). Specifically, the angle of the cradle 51 is adjusted such that the first arm 51a and the second arm 51b of the cradle 51 are at the same height.
[0080]
As illustrated in FIG. 2, when the cradle 51 approaches the roller 54 with the rotational axis A1 of the winding bobbin 21 parallel to the rotational axis of the roller 54, the second stopper 55b provided on the second arm 51b comes in contact (abuts) with the second movement restricting section 58b provided on the lift mechanism 52. On the other hand, the first stopper 55a provided on the first arm 51a is not in contact with the first movement restricting section 58a. Thus, the second stopper 55b and the second movement restricting section 58b can prevent the second arm 51b from excessively approaching the roller 54 and coming in contact with a component of the yarn winding device 100.
[0081]
On the other hand, when forming a truncated-cone-shaped package 20 in the winding section 5, for example, a winding bobbin 21 having a truncated cone shape as illustrated in FIG. 3 is used. When the winding bobbin 21 having a truncated cone shape is supported by the cradle 51, the angle of the cradle 51 is adjusted such that the rotational axis A1 of the winding bobbin 21 is inclined with respect to the rotational axis of the roller 54 in order to make the outer peripheral surface of the winding bobbin 21 parallel to the contact surface of the roller 54 as illustrated in FIG. 3. Specifically, the angle of the cradle 51 is adjusted such that the first arm 51a side of the cradle 51 is located lower than the second arm 51b side of the cradle 51. Although the winding bobbin 21 having a truncated cone shape includes a plurality of types of winding bobbins of which inclination angles are different as described above, the angle of the cradle 51 is adjusted according to the type of the winding bobbin 21 having a truncated cone shape. In this case, the protruding amounts of the first stopper 55a and the second stopper 55b may be adjusted as necessary.
[0082]
As illustrated in FIG. 3, when the cradle 51 approaches the roller 54 with the rotational axis A1 of the winding bobbin 21 inclined with respect to the rotational axis of the roller 54 as described above, the first stopper 55a provided on the first arm 51a comes in contact (abuts) with the first movement restricting section 58a provided on the cover member 53d of the arm-type traverse mechanism 53. On the other hand, the second stopper 55b provided on the second arm 51b is not in contact with the second movement restricting section 58b. Thus, the first stopper 55a and the first movement restricting section 58a can prevent the first arm 51a from excessively approaching the roller 54 and coming in contact with a component of the yarn winding device 100.
[0083]
As described above, in the present embodiment, the cradle 51 separately includes the first stopper 55a that restricts the movement of the cradle 51 when the winding bobbin 21 having a truncated cone shape is used, and the second stopper 55b that restricts the movement of the cradle 51 when the winding bobbin 21 having a cylindrical shape is used. When one stopper comes in contact with its corresponding movement restricting section, the other stopper is not in contact with its corresponding movement restricting section. This means that the stopper depending on the shape of the winding bobbin 21 restricts the movement of the cradle 51, which eliminates the need to adjust the protruding amount of the stopper from the cradle 51 every time the winding bobbin 21 is changed to a winding bobbin having a different shape. As a result, an amount of adjustment work for the yarn winding device 100 when changing the winding bobbin 21 to a winding bobbin having a different shape can be reduced.
[0084]
When the position and/or the inclination of the cradle 51 is changed in order to change the winding bobbin 21 to a winding bobbin having a different shape, the position of the cradle 51 in a height direction changes. Thus, in a case where the cradle 51 is provided with only one stopper, it is necessary to adjust the protruding amount of the stopper from the cradle 51 every time the winding bobbin 21 is changed to a winding bobbin having a different shape.
[0085]
2. Other embodiments
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the invention. In particular, a plurality of embodiments and alternative embodiments described in the present specification can be combined in a freely selected manner as required.
(A) The roller 54 may be changed to a traverse drum formed with a traverse groove, and the yarn 10 may be traversed using the traverse drum instead of the arm-type traverse mechanism 53 including the traverse arm 53b.
[0086]
(B) The package drive motor 56 may not be provided on the cradle 51, and the roller 54 may be rotated by a motor to cause the winding bobbin 21 to rotate as the roller 54 rotates. This method can be used when the yarn 10 is traversed by a traverse drum, for example. That is, the roller 54 can be a traverse drum.
[0087]
In this case, the weight of the cradle 51 is reduced. Thus, a second screw member 595 may be inserted into each of the pair of openings 596, and the two second screw members 595 may secure the cradle 51 to the moving mechanism 59a.
[0088]
(C) As the first stopper 55a, there may be a plurality of types of first stoppers having first screw portions of different lengths to be screwed into the first arm 51a. This allows the first stopper 55a to be arranged even at a position where the screwing amount of the first screw portion is limited to a small amount in the first arm 51a, for example. That is, the degree of freedom of an attachment position of the first stopper 55a in the first arm 51a is increased.
[0089]
(D) As the second stopper 55b, there may be a plurality of types of second stoppers having second screw portions of different lengths to be screwed into the second arm 51b. This allows the second stopper 55b to be arranged even at a position where the screwing amount of the second screw portion is limited to a small amount in the second arm 51b, for example. That is, the degree of freedom of an attachment position of the second stopper 55b in the second arm 51b is increased.
[0090]
(E) The technique described above can also be applied to a device for forming a package by a method different from the yarn winding device 100 described above. For example, the technique can also be applied to an air-jet spinning machine that produces a yarn by applying a swirling airflow to a fiber bundle and winds the produced yarn to form a package.
[0091]
3. Features of Embodiments
The above-described embodiments can also be described as follows.
(1) A winding device (for example, yarn winding device 100) includes a cradle (for example, cradle 51), a roller (for example, roller 54), a lift mechanism (for example, lift mechanism 52), a coupling section (for example, coupling section 59), a first stopper (for example, first stopper 55a), a second stopper (for example, second stopper 55b), a first movement restricting section (for example, first movement restricting section 58a), and a second movement restricting section (for example, second movement restricting section 58b). The cradle includes a first arm (for example, first arm 51a) and a second arm (for example, second arm 51b) that are configured to rotatably hold a winding bobbin (for example, winding bobbin 21) between the first arm and the second arm. The roller is configured to come in contact with a package (for example, package 20). The lift mechanism is configured to separate the cradle from the roller in accordance with progress of winding of the yarn around the winding bobbin. The coupling section is configured to couple the cradle with the lift mechanism.
[0092]
The first stopper protrudes from the first arm toward the roller with respect to a rotational axis of the winding bobbin. The second stopper protrudes from the second arm toward the roller with respect to the rotational axis of the winding bobbin. The first movement restricting section restricts movement of the first arm in an approaching direction to the roller by contact with the first stopper. The second movement restricting section restricts movement of the second arm in an approaching direction to the roller by contact with the second stopper. The coupling section includes an angle adjusting mechanism (for example, angle adjusting mechanism 59b). The angle adjusting mechanism is configured to adjust an angle of a rotational axis (for example, rotational axis A1) of the winding bobbin with respect to a rotational axis of the roller.
[0093]
In the winding device described above, the second stopper is not in contact with the second movement restricting section when the first stopper comes in contact with the first movement restricting section. On the other hand, the first stopper is not in contact with the first movement restricting section when the second stopper comes in contact with the second movement restricting section.
[0094]
For example, when the cradle approaches the roller with the rotational axis of the winding bobbin inclined with respect to a contact surface of the roller, the first stopper comes in contact with the first movement restricting section. At this time, the second stopper is not in contact with the second movement restricting section. On the other hand, when the cradle approaches the roller with the rotational axis of the winding bobbin parallel to the contact surface of the roller, the second stopper comes in contact with the second movement restricting section. At this time, the first stopper is not in contact with the first movement restricting section.
[0095]
In the winding device described above, the cradle is provided with the first stopper and the second stopper such that the second stopper is not in contact with the second movement restricting section when the first stopper comes in contact with the first movement restricting section, and the first stopper is not in contact with the first movement restricting section when the second stopper comes in contact with the second movement restricting section.
[0096]
Therefore, for example, in a case where a winding bobbin having a truncated cone shape is used, when the cradle moves in the approaching direction to the roller, the first stopper comes in contact with the first movement restricting section while the second stopper is not in contact with the second movement restricting section, which can prevent the cradle from excessively approaching the roller. On the other hand, for example, in a case where a winding bobbin having a cylindrical shape is used, when the cradle moves in the approaching direction to the roller, the second stopper comes in contact with the second movement restricting section while the first stopper is not in contact with the first movement restricting section, which can prevent the cradle from excessively approaching the roller. That is, providing the first stopper and the second stopper on the cradle eliminates the need to adjust a protruding amount of the stopper from the cradle every time the winding bobbin is changed to a winding bobbin having a different shape. That is, an amount of adjustment work for the winding device when changing the winding bobbin to a winding bobbin having a different shape can be reduced.
[0097]
Further, in the winding device described above, the angle adjusting mechanism that adjusts the angle of the rotational axis of the winding bobbin with respect to the rotational axis of the roller is provided on the coupling section that couples the cradle with the lift mechanism. Thus, a center position of traverse of the yarn and the center of the winding bobbin can be easily matched, and the cradle can be prevented from colliding with another member.
[0098]
(2) In the winding device according to (1), the first movement restricting section may have a plane (for example, first plane P1) perpendicular to the first stopper. This can more reliably prevent the first arm of the cradle from excessively approaching the roller.
[0099]
(3) In the winding device according to (1) or (2), the second movement restricting section may have a plane (for example, second plane P2) perpendicular to the second stopper. This can more reliably prevent the second arm of the cradle from excessively approaching the roller.
[0100]
(4) In the winding device according to any one of (1) to (3), the first stopper may be provided at a position different from a portion for holding the winding bobbin in an extending direction of the first arm. This makes it possible to widely adjust a protruding amount of the first stopper from the first arm.
[0101]
(5) In the winding device according to any one of (1) to (4), the second stopper may be provided at a position different from a portion for holding the winding bobbin in an extending direction of the second arm. This makes it possible to widely adjust a protruding amount of the second stopper from the second arm.
[0102]
(6) In the winding device according to any one of (1) to (5), the first stopper may include a first axis section (for example, first axis section 551) and a first nut section (for example, first nut section 552). The first axis section has a first screw portion screwed to the first arm. The first nut section is screwed to the first screw portion. Thus, the protruding amount of the first stopper from the first arm can be adjusted by a simple method of rotating the first axis section with respect to the first arm.
[0103]
(7) In the winding device according to any one of (1) to (6), the second stopper may include a second axis section (for example, second axis section 554) and a second nut section (for example, second nut section 555). The second axis section has a second screw portion screwed to the second arm. The second nut section is screwed to the second screw portion. Thus, the protruding amount of the second stopper from the second arm can be adjusted by a simple method of rotating the second axis section with respect to the second arm.
[0104]
(8) In the winding device according to any one of (1) to (7), the coupling section may include a moving mechanism (for example, moving mechanism 59a). The moving mechanism is a mechanism different from the angle adjusting mechanism described above and enables the cradle to move with respect to the lift mechanism along a direction of the rotational axis of the roller (for example, pivot axis A2). This makes it possible to independently adjust the position of the cradle with respect to the lift mechanism and the angle of the cradle with respect to the roller. As a result, the center position of the traverse of the yarn and the center of the winding bobbin can be more easily matched, and the cradle can be prevented from colliding with another member.
[0105]
(9) The winding device according to any one of (1) to (8) may further include an arm-type traverse mechanism (for example, arm-type traverse mechanism 53) that is configured to cause an arm (for example, traverse arm 53b) that swings side to side to traverse the yarn to be wound into the package. In addition, the cradle may include a motor (for example, package drive motor 56) that is configured to rotate the winding bobbin about the rotational axis of the winding bobbin. As a result, in the winding device that rotates the winding bobbin and traverses the yarn by the arm-type traverse mechanism, an amount of adjustment work for the winding device when changing the winding bobbin to a winding bobbin having a different shape can be reduced.
Industrial Applicability
[0106]
The present invention can be widely applied to a winding device that winds a yarn around a winding bobbin to form a package.
, Claims:We claim:

1. A winding device (100) configured to wind a yarn (10) around a winding bobbin (21) to form a package (20), the winding device (100) comprising:
a cradle (51) including a first arm (51a) and a second arm (51b) configured to rotatably hold the winding bobbin (21) between the first arm (51a) and the second arm (51b);
a roller (54) configured to come in contact with the package (20);
a lift mechanism (52) configured to separate the cradle (51) from the roller (54) in accordance with progress of winding of the yarn (10) around the winding bobbin (21);
a coupling section (59) configured to couple the cradle (51) with the lift mechanism (52);
a first stopper (55a) protruding from the first arm (51a) toward the roller (54) with respect to a rotational axis (A1) of the winding bobbin (21);
a second stopper (55b) protruding from the second arm (51b) toward the roller (54) with respect to the rotational axis (A1) of the winding bobbin (21);
a first movement restricting section (58a) configured to restrict movement of the first arm (51a) in an approaching direction to the roller (54) by contact with the first stopper (55a); and
a second movement restricting section (58b) configured to restrict movement of the second arm (51b) in an approaching direction to the roller (54) by contact with the second stopper (55b); wherein
the coupling section (59) includes an angle adjusting mechanism (59b) configured to adjust an angle of the rotational axis (A1) of the winding bobbin (21) with respect to a rotational axis of the roller (A2),
the second stopper (55b) is not in contact with the second movement restricting section (58b) when the first stopper (55a) comes in contact with the first movement restricting section (58a), and
the first stopper (55a) is not in contact with the first movement restricting section (58a) when the second stopper (55b) comes in contact with the second movement restricting section (58b).

2. The winding device (100) as claimed in claim 1, wherein the first movement restricting section (58a) has a plane (P1) perpendicular to the first stopper (55a).

3. The winding device as claimed in claim 1 or 2, wherein the second movement restricting section (58b) has a plane (P2) perpendicular to the second stopper (55b).

4. The winding device (100) as claimed in one of claims 1 to 3, wherein the first stopper (55a) is provided at a position different from a portion for holding the winding bobbin (21) in an extending direction of the first arm (51a).

5. The winding device (100) as claimed in one of claims 1 to 4, wherein the second stopper (55b) is provided at a position different from a portion for holding the winding bobbin (21) in an extending direction of the second arm (51b).

6. The winding device (100) as claimed in one of claims 1 to 5, wherein the first stopper (55a) includes a first axis section (551) having a first screw portion screwed to the first arm (51a), and a first nut section (552) screwed to the first screw portion.

7. The winding device (100) as claimed in one of claims 1 to 6, wherein the second stopper (55b) includes a second axis section (554) having a second screw portion screwed to the second arm (51b), and a second nut section (555) screwed to the second screw portion.

8. The winding device (100) as claimed in one of claims 1 to 7, wherein the coupling section (59) includes a moving mechanism (59a) that is a mechanism different from the angle adjusting mechanism (59b) and enables the cradle (51) to move with respect to the lift mechanism (52) along a direction of the rotational axis (A2) of the roller (54).

9. The winding device (100) as claimed in one of claims 1 to 8, further comprising an arm-type traverse mechanism (53) configured to cause an arm (53b) that swing side to side to traverse the yarn (10) to be wound into the package (20), wherein
the cradle (51) includes a motor (56) configured to rotate the winding bobbin (20) about the rotational axis (A1) of the winding bobbin (20).