JPH0575257U - Bobbin holder in a spinning winder - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a bobbin holder for a take-up winder, which is capable of guiding air pressure to each holding mechanism structurally without difficulty even if each of the holding mechanisms is a pneumatically operated bobbin holder. A rotary body (5, 6) into which a bobbin (B) is inserted, and two or more holding mechanisms (71) for pressing and holding the bobbin (B) from the inside are arranged on the outer periphery of the rotary bodies (5, 6). In a bobbin holder in a take-up winder in which each of 71 operates by air pressure, both ends of the rotating bodies 5 and 6 are bearings 60,
A center hole 64, 65, which is axially supported by 61, is provided at the center of the rotating bodies 5, 6 to introduce air pressure from one end side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bobbin holder in a take-up winder that winds a spinning yarn spun from a spinning machine at a high speed, and particularly relates to a bobbin holder in which a fitted and inserted bobbin is held substantially axially.

[0002]

[Prior Art]

 First, a conventional turret type spinning winder equipped with a bobbin holder will be described with reference to FIG. 7 (side view) and FIG. 8 (front view). This spinning winder 101 comprises a turret plate 104 which is rotated by 180 ° around a rotary shaft 103 with respect to a main body frame 102, two bobbin holders 105 which cantileverly project from the turret plate 104, Induction motors 107 and 108 fixed to the back side of 106 and the turret plate 104 to rotate and drive the bobbin holders 105 and 106, and a touch roller 110 provided on an elevating frame 109 that is vertically movable relative to the main body frame 102. And a traverse device 111 provided on the elevating frame 109 in the same manner. The elevating frame 109 is supported by a contact pressure cylinder 112 provided on the base end side thereof to support the entire elevating member. The pressure difference between the weight and the lifting force of the contact pressure cylinder 112 is the contact pressure of the touch roller 110 with respect to the package. In addition, B is a bobbin, P is a package wound around the bobbin B, and 113 is a pusher device that pushes out the bobbin B of the full package P.

The operation of the above-described spin winding machine will be described below. In FIG. 7, the bobbin holder 105 is in the winding position a, and the bobbin holder 106 is in the standby position b. When the package at the winding position a 1 is fully wound, the turret plate 104 turns 180 °, the fully wound package P becomes the standby position, and the empty bobbin B becomes the winding position. Then, as shown in FIG. 7, the yarn Y is in a state of being wound around the bobbin B while being in contact with the bobbin B, and the yarn Y is transferred from the full package P to the bobbin B by a yarn passing device (not shown). .. Next, the rotation of the bobbin holder 106 at the standby position is stopped, and the pusher device 113 pushes the full-roll package P onto a doffing dolly (not shown), and at the same time, an empty bobbin B is inserted into the bobbin holder 106. By repeating the above operation, the yarn is continuously wound.

The above-described conventional bobbin holders 105 and 106 are cantilever-supported rotating bodies, hold a package P of a considerable weight wound around the bobbin B, and provide a predetermined contact pressure via the touch roller 10. It is a loaded structure. An example of the structure of such bobbin holders 105 and 106 will be described with reference to FIG. The bobbin holders 105 and 106 mainly include a fixed cylinder 122, a drive shaft 123, and a rotary cylinder 124. The rotary cylinder 124 is a base member for holding the bobbin B, and is fixed to the tip of the drive shaft 123 by a rib 124A in the rotary cylinder 124. The drive shaft 123 is rotatably supported by a bearing 126 in a fixed cylinder 122 which is inserted in a rotary cylinder 124. Guidance motors 107 and 108 are attached to the end of the drive shaft 123. As described above, the rotating cylinder 124 is axially supported by the fixed cylinder 122 via the induction motors 107 and 108 and has a structure capable of high speed rotation. Next, the mechanism for holding the bobbin B will be described. Spacer rings 129 and elastic rings 130 are alternately loosely fitted around the outer periphery of the rotary cylinder 124. The spacer ring 129 is a cylinder made of an aluminum material, and the outer circumference thereof supports the inner diameter of the bobbin B. The elastic ring 130 is a rubber ring having a substantially rectangular cross section with metal plates adhered to both ends thereof, and its inner and outer diameters expand when a compressive force in the axial direction is applied via the spacer ring 129. Then, due to the expansion and deformation of the inner and outer diameters, the elastic ring 130 is brought into close contact with and integrated with the outer circumference of the rotary cylinder 124 and the inner circumference of the bobbin B. introduce. A cap 131 is movably inserted into the tip of the rotary cylinder 124, and the elastic ring 130 is compressed or released by the cap 131. Further, the piston 131A of this cap and the cylinder 124B at the tip of the rotary cylinder constitute an actuator. Usually, the spring 132 is interposed between the piston 131A and the cylinder 124B, and the cap 131 compresses the elastic ring 130 via the spacer ring 129 to hold the bobbin B. Then, when compressed air is introduced into the right chamber of the piston 131A from the air hole 123A which is fitted through the center of the drive shaft 123, the piston 131A moves leftward, releases the elastic ring 130, and the bobbin B also moves. To be released. In the bobbin holder having the structure described above, the rotary cylinder 124 is supported in a cantilevered manner with the point A as a fixed fulcrum with respect to the drive shaft 123.

By the way, since the elastic ring 130 is sequentially compressed and expanded from the tip end via the spacer ring 129, the pressing force for holding the bobbin B is uniformly generated for each elastic ring 130 arranged in the axial direction. Instead, as the stress is sequentially transmitted from the start end, the pressing force becomes smaller toward the end. The degree of decrease in the pressing force increases as the bobbin holder 105 becomes longer. Therefore, in order to make the pressing force for holding the bobbin B uniform, a holding mechanism as shown in FIG. 10 has been proposed. Each holding mechanism has a spring and an actuator. One end of the spacer ring 129 is a taper 150, and the other end is a bent portion 152 that is bent inward in a key shape at the tip of the extending portion 151. A piston body 154 having a tapered end 155 is housed in a space 153 formed by the bent portion 152, and a horizontal hole 156 in the wall thickness of the rotary cylinder 124 and a vertical hole 157 in the outer circumference are provided. Air pressure can be introduced into the space 153. A spring 158 is interposed between the spacer ring 129 and the piston body 154, and the piston body 154 is biased in the protruding direction. The elastic ring 130 is sandwiched between the taper 150 of the spacer ring 129 and the taper 155 of the piston body 154. Thus, the elastic ring 130, the piston body 154, and the spring 158 form one holding mechanism. The elastic ring 130 is composed of a resin ring 130A for improving slidability, an elastic body 130B made of rubber, and a holding ring 130C. When air pressure is introduced into the space 153, the urging force of the spring 158 is overcome and the piston body 154 retracts, the outer diameter of the elastic ring 130 decreases, and the bobbin B is released. When the air pressure in the space 153 is released, the piston 154 is projected by the spring 158, the outer diameter of the elastic ring 130 is increased and a pressing force is generated, and the bobbin B is held. In this way, when each holding mechanism operates independently by air pressure, the pressing force for holding the bobbin B can be made substantially uniform in the axial direction. It should be noted that such an independently operated holding mechanism is not limited to the one using the elastic ring, and there is also a mechanical type in which the outer diameter is reduced and expanded by combining the tapered rings. There is also a type in which the elastic ring is pushed in by the introduction of air pressure and the outer diameter increases.

[0006]

[Problems to be solved by the device]

 However, in the case where each holding mechanism has an actuator by the piston body 154 as shown in FIG. 10, it is necessary to provide the horizontal hole 156 in the rotating cylinder 124 having only a small thickness, which is not necessary in the elongated bobbin holder. However, there was a problem that processing was practically impossible. Further, as shown in FIG. 9, due to the structural limitation of the rotary cylinder 124 inserted into the fixed cylinder 122, the wall thickness of the rotary cylinder 124 cannot be inevitably increased, and the structure for introducing air pressure into each holding mechanism becomes complicated. To do.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to hold each holding mechanism even if each holding mechanism is a bobbin holder operated by air pressure. An object of the present invention is to provide a bobbin holder for a take-up winder that can guide air pressure to the mechanism without any structural difficulty.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the bobbin holder in the take-up winder of the present invention is a rotating body into which the bobbin is inserted, and a holding mechanism for holding the bobbin by pressing the bobbin from the inside to the outer periphery of the rotating body. In the bobbin holder of the spinning winder in which the above-mentioned holding mechanisms are each operated by air pressure, both ends of the rotating body are pivotally supported, and a central hole for introducing air pressure from one end side is provided in the center of the rotating body. It has been done.

[0009]

[Action]

 When the rotating body is supported on both sides, a supporting member such as a fixed cylinder in the rotating body is eliminated, and a central hole for introducing air pressure is provided at the center of the rotating body.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a bobbin holder of the present invention.

In FIG. 1, 4 is a turret plate, 3 is its central axis, 5 and 6 are bobbin holders as rotating bodies, 7 and 8 are induction motors, and 23 is a chuck device of a tip support device. The bases of the bobbin holders 5 and 6 have a small diameter, and are rotatably supported by the turret plate 4 via bearings 60. The tip ends of the bobbin holders 5 and 6 are recesses, and a chuck holder 62 is internally provided in the recesses via a bearing 61. The chuck holder 62 has a hole 63 that is integrated with the chuck device 23. That is, the tips of the bobbin holders 5 and 6 are rotatably supported by the chuck holder 62 and the chuck device 23 via the bearing 61.

As described above, since the bobbin holders 5 and 6 are both-end-supported with the roots and tips thereof pivotally supported, the bobbin holders 5 and 6 may have a simple cylindrical shape or a cylindrical shape. In the illustrated example, it has a cylindrical shape in order to reduce the inertial force, and its central portion is a cavity 64 which is also a central hole, and there is no supporting member such as a fixed cylinder. A central hole 65 communicating with the cavity 64 is provided at the center of the roots of the bobbin holders 5, 6. The center hole 65 communicates with the coupling hole 66 and the shaft holes 67 of the induction motors 7 and 8, and an air coupling 69 that is advanced and retracted by a cylinder 68 is provided on the back surface of the induction motors 7 and 8. Further, spacer rings 70 and holding mechanisms 71 are alternately arranged on the outer peripheral portions of the bobbin holders 5 and 6. This holding mechanism 71 is of a type that releases the bobbin B by air pressure and holds the bobbin B when the air pressure is released, and the air pressure is introduced through the through hole 72 from the cavity 64 to each holding mechanism 71.

In the state where the bobbin holders 5 and 6 are wound, the air coupling 69 is separated from the shaft hole 67 to shut off the air pressure as shown in the figure, and the cavity 64 is kept at the atmospheric pressure. The mechanism 71 presses and holds the bobbin B from the inside. When the winding is completed and the bobbin holders 5 and 6 are completely stopped, the air coupling 69 is fitted into the shaft hole 67 and the air pressure is introduced into the cavity 64. The holding mechanism 71 and the bobbin B are released, the full package P is extracted and a new bobbin B is inserted (at this time, the chuck device 23 is in the retracted position). When the bobbin holders 5 and 6 are both-supported in this way, the structure for introducing air pressure into the holding mechanism 71 becomes extremely simple.

Next, an example of a turret type spin winding machine equipped with a both-end-supported bobbin holder as shown in FIG. 1 will be described below. 2 is a side view of the take-up winder and a front view of FIG. 2 and 3, 1 is a take-up winder, 2 is a main frame, 4 is a turret plate, 5 and 6 are bobbin holders, 7 and 8 are induction motors, 9 is a lifting frame, 10 is a touch roller, and 11 is A blade type traverse device, 13 is a pusher device, 15 is a tip support device, 16 and 17 are slide devices for the lifting frame 9, and 18 is a chuck device for gripping the root outer diameter portions of the bobbin holders 5 and 6.

The tip support device 15 includes an arm member 21 that is swingably supported by a side frame 20 that is erected at the tip of the main body frame 2, and a swing member that is rotatably supported by the arm member 21. 22, a chuck device 23 at both ends of the turning member 22, and a stopper member 51 between the arm member 21 and the chuck device 23.

In FIG. 4, the arm member 21 is rotatably supported via a shaft 21 a and a bearing 21 b which are fitted into a block 20 a fixedly mounted on the side frame 20. A bearing 21c is built in the lower side of the arm member 21, and a shaft 22a of the turning member 22 is rotatably supported. Further, the arm member 21 is pushed by the pneumatic cylinder 25, and the arm member 21 can be swung about the swing shaft 26 between a vertical position (solid line position) and an oblique position (two-dot chain line position). (See FIG. 3). The swing shaft 26 coincides with the central axis 5a of the bobbin holder 5 so that the central axis of the bobbin holder 5 during winding does not shift even if the arm member 21 swings. Further, as shown in FIG. 3, when the arm member 21 is at an oblique position, it does not interfere with the full-roll package P. Further, when the arm member 21 swings to an oblique position, the stopper member 51 described below also swings together with the arm member 21 so that the bobbin holder at the winding position a is not displaced.

The turning member 22 is rotatably supported by the arm member 21 by a shaft 22a. A chuck device 23, which will be described later, is attached to both ends of the swiveling member 22, and supports the tips of the bobbin holders 5 and 6 in a disengageable manner. The turning shaft 27 of the turning member 22 coincides with the rotation shaft 3 of the turret plate 4 shown in FIG. 2, so that the turret plate 4 can be rotated without any trouble.

The stopper member 51 includes a piston 52 and a roller 53 axially supported on the tip of the piston 52. The piston 52 is supported on both sides by a guide ring 52a and is excellent in lateral load resistance. Further, the receiving plate 54 is fixed to the chuck device 23, and the roller 53 advancing from the stopper member 51 is pressed against the semicircular groove 54 a of the receiving plate 54. When the stopper member 51 switches between the winding position a and the standby position b (when the turret plate 4 in FIG. 2 turns 180 °), pressurized air is introduced into the port k, and the roller 53 receives the receiving plate. After being released from 54, the turning member 22 can be turned. When the turning of the turning member 22 is completed, pressurized air is introduced into the port j, the roller 53 is pressed against the receiving plate 54, and the bobbin holder 5 is positioned at a predetermined position of the winding position a. Since the turret plate 4 shown in FIG. 2 is also provided with a positioning means using a retractable pin, the bobbin holders 5 and 6 are positioned at both ends after switching.

In FIG. 2, slide devices 16 and 17 support the left and right ends of the elevating frame 9 that holds the touch roller 10. A cylinder 28 having built-in sliding bearings is attached to both left and right ends of the elevating frame 9. A guide rod 29 is erected on the main body frame 2, and the tubular body 28 is guided by the guide rod 29. Then, a predetermined contact pressure is applied to the package via the touch roller 10 by a contact pressure cylinder (not shown).

The chuck device 18 has a detailed structure which will be described later, and holds the root outer diameter portion of the bobbin holder 6 which holds the full package at the standby position. As shown in FIG. 3, when removing the full package P, the arm member 21 and the swiveling member 22 are at the position indicated by the chain double-dashed line, and the bobbin holder stopped at the standby position is cantilevered. The outer diameter part of the root is gripped to maintain two-point support.

Next, the operation of the above-described spinning winder will be described with reference to FIGS. 2 and 3. When the full package is formed at the winding position a, the stopper member 51 becomes the release position, and the turret plate 4 turns and the turning member 22 also turns. When the turning of the turret plate 4 is completed, the stopper member returns to the engagement position. Then, the fully-wound package P becomes the standby position b, the empty bobbin B becomes the winding position a and comes into rolling contact with the touch roller 10, and the yarn transfer from the fully-wound package P to the empty bobbin B is performed. After the yarn transfer is completed, the induction motor 8 is put into a braking state and the bobbin holder 6 at the standby position b is decelerated. Even in this decelerated state, the bobbin holder 6 is still supported by both ends. When the deceleration is completed and stopped, the chuck device 23 and the tip of the bobbin holder 6 are disengaged, and at the same time, the chuck device 18 grips the root outer diameter portion of the bobbin holder 6. Next, the arm member 21 swings about the swing shaft 26, and the arm member 21 and the turning member 22 are retracted to the two-dot chain line position which does not hinder the axial pushing of the full package P (see FIG. 3). ). Then, the pusher device 13 pushes the full-wrapped package P to an automatic doffing device (not shown) or the like. Then, when the empty bobbin B is inserted into the bobbin holder 6, the arm member 21 oscillates and returns to the vertical posture, and the chuck device 23 and the bobbin holder 6 are engaged again to prepare for the next thread switching. As described above, the bobbin holders 5 and 6 remain supported on both sides or at two points during a series of operations of winding, thread passing, full tube discharge, and empty bobbin insertion. Longer length and high speed rotation are also possible.

Since the lifting frame 9 is also supported at both ends by the slide devices 16 and 17, the parallelism between the touch roller 10 and the bobbin holder 5 is maintained. That is, if the bobbin holder 5 is held on both sides and the elevating frame 9 is cantilevered, the contact pressure becomes uneven due to the bending of the elevating frame 9, that is, the tip end of the touch roller 10. By holding both of them, the contact pressure becomes uniform. Further, due to the double-supported structure, the ascending / descending frame 9 does not need to have so much rigidity.

Next, referring to FIG. 5, the structure and operation of the chuck devices 23 at both ends of the turning member 22 will be described. The upper side of FIG. 5 shows the chucked state, and the lower side of FIG. 5 shows the opened state. An inner diameter portion 31 is provided at the tip of the bobbin holders 5 and 6, and the chuck device 23 has an expandable / contractible circumferential split ring 32 that holds the inner diameter portion 31 inside. That is, as described with reference to FIG. 9, the bobbin holder is rotatably supported by the bearing, and the axial force is applied to the bearing in the chuck device by pressing the bobbin holder in the axial direction. However, with the inner grip chuck device 23 of the inner diameter portion 31, no axial force is applied to the bobbin holders 5 and 6 when holding both ends.

The chuck device 23 mainly includes a cylinder 33, a double-acting piston 34, a single-acting piston 35, a cone-equipped shaft 36, and a split ring 32. . The cylinder 33 and the double-acting piston 34 form a first air chamber 37 and a second air chamber 38, and the pressure receiving area of the first air chamber 37 is larger than the pressure receiving area of the second air chamber 38. The port c opens to the first air chamber 37, and the port d opens to the second air chamber 38. A third air chamber 39 is formed between the double acting piston 34 and the single acting piston 35, and a boat e communicating with the port d opens into the third air chamber 39. The single acting piston 35 is biased to the left side in the drawing by a leaf spring 40, and when the pressurized air is introduced into the third air chamber 39, the single acting piston 35 moves to the right side in the drawing. The shaft 36 is connected to the single-acting piston 35 and has a cone 41 at its tip. The flange portion 32a of the split ring 32 engages with the groove 34a of the double acting piston 34, and the cone inner diameter portion 32a of the split ring 32 encloses the outer diameter portion of the cone 41. Further, the split ring 32 is urged by a spring 42 in the diameter reducing direction.

The operation of the chuck device 23 described above will be described below. First, the state in which the lower side of FIG. 5 is open will be described. When pressurized air is introduced from the port d into the second air chamber 38, the double-acting piston 34 moves to the left side in the drawing. Further, the compressed air is introduced into the third air chamber 39 by the port e communicating with the port d, and the single acting piston 35 overcomes the biasing force of the leaf spring 40 and moves to the right side in the drawing. Since the cone 41 also moves to the right in the drawing, the outer diameter D1 of the split ring 32 becomes smaller than the inner diameter D2 of the inner diameter portion 31. The split ring 32 itself is housed in the cylinder 33. Next, the chuck state on the upper side of FIG. 5 will be described. The pressurized air is introduced into the first air chamber 37 from the port c. In this case, the pressurized air is still introduced into the second air chamber 38 and the third air chamber 39, but since the pressure receiving area of the first air chamber 37 is larger than the pressure receiving area of the second air chamber 38, the double acting piston is used. 34 moves to the left side of the drawing. However, the single-acting piston 35 overcomes the biasing force of the leaf spring 40 and remains moving to the right in the drawing. Therefore, the split ring 32 is inserted into the inner diameter portion 31 while maintaining the small outer diameter D1. Then, when the introduction of the pressurized air to the port d is cut off, the single-acting piston 35 moves to the left side in the drawing by the urging force of the leaf spring 40, the split ring 32 expands in diameter, and the inner diameter portions 31 of the bobbin holders 5 and 6 move. Hold by the internal grip.

Next, the structure and operation of the chuck device 18 at the root of the bobbin holder 6 will be described with reference to FIG. The upper side of FIG. 6 shows the opened state, and the lower side of FIG. 6 shows the chucked state. The chuck device 18 has an expandable / contractible circumferential split ring 45 that grips the outer diameter portion of the bobbin holder 6. That is, when the full package is pulled out from the bobbin holder 6, the bobbin holder 6 is in a cantilever state as described with reference to FIG. Therefore, since an excessive load acts on the bearing, the base of the bobbin holder 6 is gripped by the chuck device 18, and the load on the bearing in the bobbin holder 6 is reduced.

The chuck device 18 mainly includes a cylinder 46 attached to the turret plate 4, a piston 47, and a split ring 45. The cylinder 46 and the piston 47 form a first air chamber 48 and a second air chamber 49, and the port f is open to the first air chamber 48 and the port g is open to the second air chamber 49. .. The piston 47 has an inclined inner diameter portion 47 a and engages with the inclined outer diameter portion 45 a of the split ring 45. Further, the split ring 45 is biased in the radial direction by a spring 50, and maintains close contact with the inclined inner diameter portion 47a of the piston 47. The split ring 45 is guided to the tip 46a of the cylinder 46.

The operation of the chuck device 18 described above will be described below. First, the state where the upper side of FIG. 6 is open will be described. When pressurized air is introduced from the port g into the second air chamber 49, the piston 47 moves to the left side in the drawing. The split ring 45 whose diameter is to be expanded by the spring 50 is located on the inner side of the inclined inner diameter portion 47a, and the inner diameter portion 45b of the split ring 45 is separated from the bobbin holder 6. Next, the chuck state on the lower side of FIG. 6 will be described. When pressurized air is introduced from the port f 1 into the first air chamber 48, the piston 47 moves to the right side in the drawing. The split ring 45 is reduced in diameter by overcoming the biasing force of the spring 50 of the split ring 45, and is positioned near the tip of the inclined inner diameter portion 47a. Then, the bobbin holder 6 is held by the inner diameter portion 45b of the split ring 45.

In the above embodiment, the bobbin holders 5 and 6 to which the bobbin B is mounted are directly driven by the induction motors 7 and 8 in the so-called spindle drive type spin winding machine. The present invention is also applied to a bobbin holder of a so-called friction drive type take-up winder in which the bobbin B is indirectly driven by driving a touch roller rollingly contacting the bobbin B.

[0030]

[Effect of the device]

 The bobbin holder of the present invention is a bobbin holder in which both ends of a rotating body are axially supported, and a center hole for introducing air pressure from one end side is provided at the center of the rotating body. Since such a supporting member is eliminated and a central hole for introducing air pressure is provided at the center of the rotating body, the air pressure can be guided structurally reasonably to each holding mechanism that presses and holds the bobbin from the inside.

[Brief description of drawings]

FIG. 1 is a sectional view of a bobbin holder of the present invention.

FIG. 2 is a side view of a take-up winder equipped with the bobbin holder of the present invention.

FIG. 3 is a front view of a take-up winder equipped with the bobbin holder of the present invention.

FIG. 4 is a cross-sectional view of the tip support device.

FIG. 5 is a sectional view of a chuck device at the tip of a bobbin holder.

FIG. 6 is a sectional view of a chuck device at the base of a bobbin holder.

FIG. 7 is a side view of a conventional take-up winder.

FIG. 8 is a front view of a conventional take-up winder.

FIG. 9 is a sectional view of a conventional bobbin holder.

FIG. 10 is a cross-sectional view showing an example of a holding mechanism.

[Explanation of symbols]

 5, 6 Bobbin holder (rotating body) 60, 61 Bearing (both ends support structure) 64 Cavity (center hole) 71 Holding mechanism

Claims (1)

[Scope of utility model registration request] 1. A rotating body into which a bobbin is fitted, and two or more holding mechanisms for pressing and holding the bobbin from the inside are arranged on the outer circumference of the rotating body, and each of the holding mechanisms operates by air pressure. A bobbin holder in a take-up winder, wherein both ends of a rotary body are axially supported, and a center hole for introducing air pressure from one end side is provided at the center of the rotary body.