JP5365697B2 - Yarn winding device - Google Patents

Abstract

In an yarn winder, a yarn is seamlessly wound without interruption. An accumulator 61 is provided with six rollers 71 that are provided on a circle and are inclined with respect to the vertical direction. As a winding arm 75 rotates around the six rollers 71, the yarn is wound onto the lower end portions of the rollers 71. As the winding arm 75 rotates in the opposite direction, the yarn Y wound on the rollers 71 is drawn out. The yarn Y wound on the rollers 71 is transported upward by five drive rollers 71a to 71e out of the six rollers 71. The remaining one adjusting roller 71f is a driven roller and is arranged so that the upper end portion thereof is inclined with respect to the vertical direction to be on a virtual circle A3 which is outside the virtual circle A1 on which the upper end portions of the other rollers 71a to 71e are positioned. With this, the circumferential length of the yarn Y wound on the rollers 71 is kept constant.

Description

  The present invention relates to a yarn winding device that winds a spun yarn unwound from a yarn feeding bobbin as a package.

  Yarn produced by a spinning machine or the like is wound around a yarn feeding bobbin and conveyed to a yarn winding device. In the yarn winding device, the yarns of the plurality of yarn feeding bobbins conveyed are joined together by a predetermined yarn joining device to generate a package having a predetermined length. In a yarn winding device provided with this type of yarn joining device, a suction arm that catches the yarn end on the winding bobbin side and guides it to the yarn joining device, and a yarn end on the yarn feeding bobbin side that catches and guides it to the yarn joining device A configuration of a yarn winding device including a relay pipe is conventionally known.

  In such a yarn winding device, when yarn breakage or yarn cutting occurs during the winding operation, the upper yarn is wound around the winding bobbin that rotates inertially, and the lower yarn is held in an appropriate trap means. Is done. Then, the yarn joining operation is performed as follows. That is, the winding bobbin that has stopped rotating is reversely rotated, and the yarn end of the upper yarn to be unwound is captured by sucking it with the tip of the suction arm, and this is guided to the yarn joining device. At substantially the same time, the yarn end of the lower yarn held by the trap means is caught by sucking it with the tip of the relay pipe, and the lower yarn is unwound from the yarn feeding bobbin and guided to the yarn joining device. After that, the yarn ends of the upper yarn and the lower yarn are joined by the yarn joining device, and the winding operation is started.

  On the other hand, when all the yarns of the yarn feeding bobbin are wound on the winding bobbin and a new yarn feeding bobbin is supplied, the winding bobbin that has stopped rotating is reversely rotated, and the yarn end of the upper yarn to be released is removed. The suction is picked up by the tip of the suction arm and guided to the yarn joining device. At almost the same time, the yarn end of the new yarn bobbin side (lower yarn) is blown up by the air flow and captured by sucking it at the tip of the relay pipe while unwinding the lower yarn. Lead to the connecting device. Thereafter, the yarn ends of the upper yarn and the lower yarn are joined by the yarn joining device, and the winding operation is resumed.

  The above-described winding bobbin is stopped by a lift-up mechanism and a package brake mechanism provided in the yarn winding device. The lift-up mechanism raises the cradle and separates the take-up bobbin from the take-up drive unit. The package brake mechanism stops the rotation of the winding bobbin held by the cradle at the same time that the cradle is raised by the lift-up mechanism. As a result, the winding bobbin stops rotating and the winding operation is interrupted.

  Moreover, although the purpose is different from that of the above-described yarn winding device, a winder for generating one package from a plurality of color packages is described in Patent Document 1, for example. The winder described in Patent Literature 1 is configured to manufacture a wound yarn package in which various colored yarns and yarn types are continuously wound in a longitudinal direction while measuring each length to a predetermined length. Specifically, this winder selects at least one yarn from a plurality of packages of different colors and a plurality of packages of a plurality of yarn types by a selection device, and performs yarn splicing by the yarn splicing device. It winds around a package continuously via a yarn storage device that performs storage simultaneously.

  Further, Patent Document 2 discloses a yarn winding method and apparatus that performs winding without interrupting the winding operation when yarn breakage occurs. This device described in Patent Document 2 stores the yarn unwound from the bobbin, and when yarn breakage occurs, continues winding using the stored yarn until the yarn splicing operation is completed. Is described.

JP 2004-156186 A US Pat. No. 3,314,621

  Increasing the winding speed of the package has been demanded conventionally for improving production efficiency. However, if the winding speed is increased, the load on the traveling yarn increases, and yarn breakage frequently occurs. When yarn breakage occurs, it is necessary to pull out the yarn from the package and perform yarn splicing with the yarn on the yarn feeding bobbin side, but when capturing the yarn on the package side that rotates the package in the yarn joining operation, the suction arm The surface portion of the package may be pulled by the suction force, which may cause tangle. Further, during the yarn splicing operation, the winding operation is interrupted in order to reversely rotate the package. Therefore, even if the winding speed is increased, the production efficiency is not necessarily improved effectively. In addition, a routine that suddenly stops a package rotating at a high speed and re-accelerates the package to the rotational speed before stopping after the yarn splicing operation is repeated every time the winding operation is interrupted. It will be a thing.

  In this regard, the wound package described in Patent Document 1 realizes a configuration in which a yarn is continuously wound by a configuration in which a storage portion is provided in the yarn. However, the winder of Patent Document 1 is a configuration for winding a further package using a plurality of packages wound by a yarn winding device having a yarn defect removing mechanism that is a subject of the present invention. It is not equipped with the structure which removes. Therefore, when winding the yarn feeding bobbin including the yarn defect, the portion including the yarn defect is wound around the package as it is. Further, it is difficult to remove the yarn defect due to the configuration of the yarn joining device.

  Moreover, the yarn winding method and apparatus described in Patent Document 2 are provided with a storage container for storing the yarn, so that the winding operation of the package is continued even when the yarn breakage occurs. In this yarn winding method and apparatus, when yarn breakage or defect removal work occurs, defect removal and yarn splicing are efficiently performed without depleting the stored yarn in order to continue the winding operation of the package. is important. However, Patent Document 2 does not have a specific description regarding yarn joining and defect removal while continuing the winding operation of the package. Further, since there is no mechanism for aligning and storing the yarn, there is a concern that the yarn may be entangled.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a yarn winding device capable of continuously winding a yarn from the start to the end of winding of a package.

A yarn winding device according to a first aspect of the present invention includes a yarn feeding unit that unwinds a spun yarn from a yarn feeding bobbin, a yarn winding unit that winds the spun yarn as a package, and the yarn feeding unit and the yarn winding unit. A yarn storage unit that is provided between the yarn storage unit and stores the spun yarn. The yarn storage unit winds and stores the spun yarn and stores the spun yarn around the yarn storage unit. The storage body is configured with a plurality of rollers arranged so as to be positioned on the first virtual circumference and rotatably arranged, and the yarn storage section is A roller driving motor that rotates at least one of the plurality of rollers as a driving roller is further provided, and the rotation shafts of the plurality of rollers are arranged to be inclined in the circumferential direction of the first virtual circumference. By being wound around the plurality of rollers The績糸, is characterized in that for conveying the unwinding direction the spun yarn is unwound by the yarn winding section.

  According to this, since the spun yarn wound around the plurality of rollers is conveyed by the rotation of the roller, the burden (frictional force) applied to the spun yarn is small, and the quality of the yarn is reduced. Further, since the spun yarn is wound around a plurality of rollers by a yarn winding mechanism and stored in an aligned manner, the yarn is not entangled in the yarn accumulating portion and winding of the yarn is not interrupted.

Further , according to this, since the plurality of rollers around which the spun yarn is wound are arranged to be inclined in the circumferential direction of the first virtual circumference, the yarn winding mechanism winds the plurality of rollers by rotating the driving roller. The spun yarns are sequentially conveyed and moved in a direction perpendicular to the surface surrounded by the first virtual circumference (hereinafter referred to as the feeding direction). Therefore, the yarn does not stay in a part of the yarn reservoir and the yarn storage is not delayed.

A yarn winding device according to a second aspect of the present invention is the yarn winding device according to the first aspect of the present invention, wherein the yarn storage section changes the winding interval of the spun yarn wound around the plurality of rollers. It further comprises a changing means.

  According to this, the winding interval (interval in the feed direction) of the spun yarn wound around the plurality of rollers can be changed according to the type of the spun yarn wound by the yarn winding device.

A yarn winding device according to a third invention is the yarn winding device according to the second invention, wherein the winding interval changing means has an angle changing mechanism for changing the inclination angle of each of the plurality of rollers. It is characterized by that.

  According to this, it is possible to change the moving speed of the spun yarn in the feeding direction by changing the inclination angle of the plurality of rollers, and thereby the spun yarn winding speed and the spun yarn feeding direction. The ratio with the moving speed of can be changed. Then, the winding interval of the spun yarn can be changed by changing the ratio between the winding speed of the spun yarn and the moving speed of the spun yarn in the feeding direction.

A yarn winding device according to a fourth aspect of the present invention is the yarn winding device according to the third aspect of the present invention, wherein the angle changing mechanism has at least one end of the plurality of rollers arranged around the first virtual circumference. It is a mechanism that moves in a direction.

  According to this, the inclination angle of the roller can be easily changed by moving at least one end of the plurality of rollers in the circumferential direction of the first virtual circumference.

A yarn winding device according to a fifth aspect of the present invention is the yarn winding device according to the third or fourth aspect of the present invention, wherein the yarn winding mechanism has a spun yarn at a winding side end which is one end of the plurality of rollers. Is attached so that the winding-side end portions of the plurality of rollers are positioned on the first virtual circumference, and the other end portion of the majority of the plurality of rollers. A certain unwinding side end is arranged with reference to a second virtual circumference having a smaller diameter than the first virtual circumference, so that the majority of the rollers are inclined in the radial direction of the first virtual circumference. It is characterized by being arranged.

  If the roller is inclined in the circumferential direction of the first imaginary circumference, assuming that the roller is not inclined in the radial direction, the center of the roller is located on the innermost side, and the portion closer to both ends is on the outer side. Will be located. Therefore, the winding circumference of the spun yarn wound around the central portion of the roller is the shortest, and the winding perimeter of the spun yarn wound around the portion near both ends becomes longer. On the other hand, when the spun yarn is conveyed by a roller, it is difficult to convey the spun yarn from a portion where the roller is located to a portion located outside this portion.

  From the above, in the roller, the range in which the spun yarn can be substantially wound is only between the end portion where the spun yarn is wound by the yarn winding means and the innermost portion. It becomes. That is, the spun yarn can only be wound around about half of the roller.

  However, in the present invention, the roller is inclined so that the end opposite to the side where the spun yarn is wound by the yarn winding means is inward of the end where the spun yarn is wound by the yarn winding means. The innermost portion of the roller is closer to the opposite end than the central portion. Thereby, the range which can wind the spun yarn of a roller becomes wide, and many spun yarns can be stored in a yarn storage part.

  Furthermore, the winding side end and the unwinding side end of the majority of the rollers are arranged with reference to the first and second virtual circumferences, so that the majority of the rollers are uniformly inclined at an equal angle. Can do.

  Further, since the unwinding side end portion is arranged with reference to the second virtual circumference having a smaller diameter than the first virtual circumference where the winding side end portion is arranged, the spinning wound around the plurality of rollers The winding circumference of the yarn does not increase toward the unwinding direction in which the spun yarn is unwound by the yarn winding unit. Therefore, the yarn does not stay partly and the storage is not delayed.

A yarn winding device according to a sixth invention is the yarn winding device according to the fifth invention, wherein the unwinding end portion of at least one of the rollers not included in the majority of the rollers is the first winding device. It is an adjusting roller for adjusting the winding circumferential length of the spun yarn to be wound, which is arranged based on the third virtual circumference having a diameter larger than the virtual circumference.

  If there is no adjustment roller, the roller is positioned closer to the yarn winding side end within the range where the spun yarn can be wound, so the spun yarn conveyed by the roller is The spun yarn to be wound is conveyed from a portion where the winding perimeter of the spun yarn becomes longer to a portion where it becomes shorter. At this time, the spun yarn may be loosened.

  However, in the present invention, since the end opposite to the side where the spun yarn is wound by the yarn winding means is provided with the adjusting roller arranged on the basis of the third virtual circumference, each end of the plurality of rollers is provided. The length of the spun yarn to be wound becomes uniform, and it is possible to prevent the spun yarn from being loosened as described above.

A yarn winding device according to a seventh aspect of the present invention is the yarn winding device according to the sixth aspect of the present invention, wherein the adjustment roller is a driven roller.

  According to this, if the roller drive motor rotates the adjustment roller together with the other rollers, the adjustment roller and the other rollers having different inclination angles with respect to the radial direction of the first and second virtual circumferences, There is a difference in the direction in which the spun yarn is to be conveyed, and as a result, the tension of the wound spun yarn may be uneven.

  However, in the present invention, the adjustment roller is a driven roller, and the adjustment roller only rotates following the movement of the spun yarn when the spun yarn is conveyed by the rotation of the other rollers. The tension applied to the wound spun yarn can be made uniform.

A yarn winding device according to an eighth invention is a yarn winding device according to any one of the first to seventh inventions, and is configured to be rotatable around the plurality of rollers. A guide member that guides the spun yarn; and a guide member drive motor that rotates the guide member; and the yarn winding mechanism is configured by the guide member and the guide member drive motor. It is characterized by.

  According to this, the yarn winding mechanism can be configured by the guide member and the guide member drive motor.

A yarn winding device according to a ninth invention is a yarn winding device according to any one of the second to seventh inventions, and is configured to be rotatable around the plurality of rollers. A guide member configured to guide the spun yarn; and the guide member is connected to the roller drive motor via a transmission mechanism so that the guide member and the roller drive motor are driven by the roller drive motor. Thus, the yarn winding mechanism is configured.

  According to this, since the guide member drive motor for rotating the guide member also serves as the roller drive motor for rotating the roller, it is not necessary to provide the guide member drive motor and the roller drive motor separately, and the configuration of the apparatus is simple. Can be.

A yarn winding device according to a tenth invention is the yarn winding device according to the ninth invention, wherein the winding interval changing means is provided in the transmission mechanism, and the roller driving motor, the driving roller, This is characterized in that a variable speed change mechanism capable of changing the ratio of the rotational speeds of these is constructed.

  According to this, by changing the ratio of the rotational speed of the guide member drive motor and the rotational speed of the drive roller by the variable speed change mechanism, the rotational speed of the guide member and the rotational speed of the drive roller (related to the above feed direction). Ratio of the spun yarn conveyance speed), and thereby the winding interval of the spun yarn can be changed.

A yarn winding device according to an eleventh invention is a yarn winding device according to any one of the second to seventh inventions, and is configured to be rotatable around the plurality of rollers. A guide member that guides the spun yarn; and a guide member drive motor that rotates the guide member. The guide member and the guide member drive motor constitute the yarn winding mechanism. The interval changing means has a speed control mechanism for individually controlling the rotation speed of the roller drive motor and the rotation speed of the guide member drive motor.

  According to this, by individually controlling the rotational speed of the roller drive motor and the rotational speed of the guide member drive motor, the rotational speed of the guide member and the rotational speed of the drive roller (spun yarn conveyance speed in the above feed direction) And the ratio of the winding of the spun yarn can be changed.

A yarn winding device according to a twelfth aspect of the present invention is the yarn winding device according to any of the eighth to eleventh aspects of the invention, wherein the yarn accumulating portion feeds the spun yarn wound around the plurality of rollers to the yarn supply. It is further characterized by further comprising a thread drawing mechanism for drawing out to the part side.

  According to this, since the yarn storage unit is provided between the yarn supply unit and the yarn winding unit, the yarn joining can be performed while the spun yarn stored in the yarn storage unit is wound up by the yarn winding unit. Thus, the yarn winding operation can be performed continuously without interruption.

A yarn winding device according to a thirteenth invention is the yarn winding device according to the twelfth invention, wherein the guide member drive motor is capable of rotating the guide member in both directions, The yarn pulling mechanism is further configured by a member and the guide member driving motor or the roller driving motor.

  According to this, since the yarn drawing mechanism can be constituted by the guide member and the guide member driving motor or the roller driving motor constituting the yarn winding mechanism, there is no need to provide a yarn drawing mechanism separately from the yarn winding mechanism. The configuration of the apparatus can be simplified.

A yarn winding device according to a fourteenth aspect of the present invention is the yarn winding device according to any one of the first to thirteenth aspects of the present invention, wherein the yarn supplying section is provided with a regulating member that covers the core tube of the yarn supplying bobbin. A yarn unwinding assisting device for assisting unwinding of the spun yarn from the yarn supplying bobbin is provided by being lowered in conjunction with unwinding of the spun yarn from the bobbin.

  According to this, by arranging the yarn storage part between the yarn feeding bobbin and the winding part to interrupt the transmission of the tension of the yarn, the tension fluctuation due to the traverse fluctuation of the winding part at the unwinding tension part of the yarn feeding bobbin Can be prevented from being transmitted. Furthermore, by attaching the unwinding assist device to the yarn supplying bobbin, the yarn unwinding from the yarn supplying bobbin can be performed stably, so that yarn breakage is prevented and the unwinding speed from the yarn supplying bobbin is further increased. Can be fast. Therefore, the unwinding efficiency from the yarn feeding bobbin can be improved.

  According to the present invention, since the spun yarn wound around the plurality of rollers is conveyed by the rotation of the roller, the burden (frictional force) applied to the spun yarn is small, and the quality deterioration of the yarn is reduced. Further, since the spun yarn is wound around a plurality of rollers by a yarn winding mechanism and stored in an aligned manner, the yarn is not entangled in the yarn accumulating portion and winding of the yarn is not interrupted.

It is a schematic block diagram of the winding unit which concerns on embodiment of this invention. It is a schematic block diagram of the accumulator of FIG. It is a top view which shows arrangement | positioning of the roller of FIG. 2, (a) is the upper end part of a roller, (b) is the lower end part of a roller, (c) has each shown the arrangement | positioning of the center part of a roller. It is a functional block diagram of the control part of FIG. It is a flowchart which shows operation | movement of a yarn winding apparatus. It is a figure which shows a mode that a thread | yarn is conveyed with a roller. It is a control flow which shows the operation | movement at the time of a thread break. It is a control flow which shows the operation | movement at the time of yarn defect generation | occurrence | production. It is a control flow which shows the operation | movement at the time of a bobbin change.

  Hereinafter, preferred embodiments of the present invention will be described.

  FIG. 1 is a schematic configuration diagram of a winding unit constituting the automatic winder according to the present embodiment. The automatic winder includes a number of winding units 2 (yarn winding devices) shown in FIG. Each winding unit 2 includes a yarn supplying section 5, a winding section 6, a yarn defect detecting section 7, a yarn joining section 8, and a yarn storing section 9.

  The yarn supplying unit 5 includes a yarn supplying bobbin holding unit 60 for holding the yarn supplying bobbin 21, a yarn unwinding assisting device 12, and a first tensor 41. Further, the yarn supplying unit 5 further includes a bobbin supplying device (not shown) for supplying a new yarn supplying bobbin 21 to the yarn supplying bobbin holding unit 60. Examples of the bobbin supply device include a magazine-type supply device and a tray-type supply device. When all of the yarn Y (hereinafter simply referred to as “yarn Y”) is pulled out from the yarn supplying bobbin 21 set in the winding unit 10, the yarn supplying unit 5 is held in the yarn supplying bobbin holding unit 60. The bobbin is discharged, and the bobbin supply device sequentially supplies new yarn supplying bobbins 21 to the yarn supplying bobbin holding unit 60.

  The yarn unwinding assist device 12 lowers the yarn Y from the yarn supplying bobbin 21 by lowering the regulating member 40 covering the core pipe of the yarn supplying bobbin 21 in conjunction with the yarn Y unwinding from the yarn supplying bobbin 21. It is intended to assist you. The regulating member 40 comes into contact with the balloon formed on the upper portion of the yarn feeding bobbin 21 by the rotation and centrifugal force of the yarn Y unwound from the yarn feeding bobbin 21, and applies an appropriate tension to the balloon to thereby apply the yarn Y. Assist with unraveling. A sensor (not shown) for detecting the chase portion of the yarn feeding bobbin 21 is provided in the vicinity of the lower portion of the restricting member 40. When the sensor detects the descent of the chase portion, the restricting member 40 is moved following the sensor, for example. It can be lowered by an air cylinder (not shown).

  In the vicinity of the yarn unwinding / holding device 12, a yarn feeler 37 capable of detecting the presence or absence of the yarn Y is provided. The yarn feeler 37 is configured to detect that the yarn Y pulled out from the yarn supplying bobbin 21 has run out and to transmit an empty bobbin signal to the control unit 109.

  The first tensor 41 applies a predetermined tension to the traveling yarn Y. As this 1st tensor 41, the gate type thing which arrange | positions a movable comb tooth with respect to a fixed comb tooth can be used, for example. The movable comb teeth can be rotated by a rotary solenoid (not shown) so that the comb teeth are engaged or opened. By this first tensor 41, a constant tension can be applied to the yarn Y stored in the accumulator 61, which will be described later, and the yarn Y can be wound in an orderly manner in the accumulator 61 and stored.

  The winding unit 6 includes a cradle (not shown) configured to hold the winding bobbin 22, a winding drum 24 for traversing the yarn Y and rotating the winding bobbin 22, and a second tensor 42. . The cradle is configured to be able to swing in a direction in which the cradle approaches or separates from the take-up drum 24, whereby the package 30 is brought into contact with or separated from the take-up drum 24. Further, as shown in FIG. 1, a spiral traverse groove 27 is formed on the outer peripheral surface of the winding drum 24, and the yarn Y is traversed by the traverse groove 27.

  The take-up drum 24 drives the take-up bobbin 22 disposed to face the take-up drum 24 by being rotationally driven. The take-up drum 24 is connected to an output shaft of a take-up drum motor 116 (see FIG. 4). The take-up drum motor 116 is operated and stopped in response to an operation signal from the control unit 109. .

  The second tensor 42 controls the tension when the yarn Y unwound from an accumulator 61 (described later) of the yarn storage unit 9 is wound around the package 30. As a result, the yarn Y pulled out from the accumulator 61 is wound around the winding bobbin 22 in a state where an appropriate tension is applied. Similarly to the first tensor 41, the second tensor 42 may be a gate type in which movable comb teeth are arranged with respect to fixed comb teeth.

  Further, on the downstream side of the second tensor 42, a waxing device 17 for waxing the running yarn Y is disposed. A suction unit (not shown) is provided on the downstream side of the waxing device 17. This suction part is connected to an appropriate negative pressure source and can suck and remove wax wrinkles and lint.

  The yarn defect detector 7 includes a yarn clearer 15 for detecting a yarn defect. The yarn clearer 15 is configured to detect a defect by monitoring the thickness of the yarn Y with an appropriate sensor. By processing a signal from the sensor of the yarn clearer 15, a slab, a foreign object, etc. The yarn defect can be detected. The yarn clearer 15 can also function as a sensor that simply detects the presence or absence of the yarn Y. Further, the yarn clearer 15 is provided with a cutter for cutting the yarn on the upstream side of the yarn defect when detecting the yarn defect.

  The yarn joining section 8 includes a splicer device 14 that performs a yarn joining operation, a lower yarn guide pipe 25, and an upper yarn guide pipe 26.

  The splicer device 14 joins the lower thread on the yarn feeding bobbin 21 and the upper thread on the package 30 when the yarn breaks, when a yarn defect occurs, or when the bobbin is changed. As the splicer device 14, a mechanical device, a device using a fluid such as compressed air, or the like can be used.

  The lower thread guide pipe 25 is supported rotatably about a shaft 25a located below the splicer device 14, and can be rotated by a lower pipe motor 122 (see FIG. 4). Yes. A suction port 25b is provided at the tip of the lower thread guide pipe 25, and a clamp portion (not shown) is provided in the suction port 25b. Further, a negative pressure source (not shown) is connected to the lower thread guide pipe 25, so that a negative pressure is supplied, thereby generating a suction flow for sucking the thread Y into the suction port 25b. .

  The upper thread guide pipe 26 is rotatably supported around a shaft 26a positioned above the splicer device 14, and can be rotated by an upper pipe motor 121 (see FIG. 4). Yes. A suction port 26b is provided at the tip of the upper thread guide pipe 26, and a clamp portion 26c (see FIG. 2) is provided in the suction port 26b. Further, a negative pressure source 120 (see FIG. 2) is connected to the upper thread guide pipe 26, so that a negative pressure is supplied, whereby suction for sucking the thread Y into the suction port 26b is performed. A flow is generated.

  The yarn storage unit 9 includes an accumulator 61 for storing the yarn Y before being wound around the package 30. FIG. 2 is a schematic configuration diagram of the accumulator 61. FIG. 3 is a plan view showing the arrangement of the rollers in FIG. 2, and (a) to (c) show the arrangement at the upper end, the lower end, and the approximate center of the roller in FIG. 2, respectively. However, in FIG. 3A, the position of the lower end portion of the roller 71 is indicated by a dotted line in order to make it easy to understand the inclination direction of the roller 71 described later.

  2 and 3, the accumulator 61 includes six rollers 71, a base 72, a rotating plate 73, three winding auxiliary members 74, a winding arm 75, a winding arm motor 76, and a speed reducer. 77, pulleys 78a to 78c, a shaft 79, and the like.

  The base material 72 is a substantially circular plate-like body, and is supported by a tip (upper end) of the output shaft 136 of the winding arm motor 76 via a bearing (not shown) and fixed to the lower surface of the base material 72. A base material 72 for the winding arm motor 76 by a magnetic coupling force between the magnet 138 attached to the magnet support 137 and the magnet 140 attached to the second magnet support 139 provided to the winding arm motor 76. The rotation of is now regulated.

  The six rollers 71 (yarn storage bodies) are arranged on the upper surface of the base material 72 along the circumference (aligned in a virtual circumferential direction described later), and the lower end portion (one end portion, the winding side end). Part) is pivotally supported on the upper surface of the base material 72, and its upper end (the other end, the unwinding side end) is supported by the rotating plate 73.

  Here, the six rollers 71 are composed of five drive rollers 71a to 71e (majority rollers) and one adjustment roller 71f. As shown in FIG. The centers are all located on the virtual circumference A1 (first virtual circumference). Further, the driving rollers 71a to 71e have their upper end centers positioned on a virtual circumference A2 (second virtual circumference) inside the virtual circumference A1, and the adjustment roller 71f has an upper end portion. Is located on a virtual circumference A3 (third virtual circumference) outside the virtual circumference A1. Note that the centers of the virtual circumferences A1 to A3 coincide with each other, and in the following description, the circumferential direction of the virtual circumferences A1 to A3 is defined as the virtual circumferential direction.

  Accordingly, the driving rollers 71 a to 71 e have their upper end portions (unwinding side end portions) supported by the rotating plate 73 pivoted on the upper surface of the base material 72 (winding side end portions). It is inclined so as to come inside. On the other hand, the adjustment roller 71f is inclined so that its upper end (unwinding side end) is on the outer side of the lower end (winding side end).

  The rotating plate 73 (angle changing mechanism, winding interval adjusting mechanism) is rotatable about the rotation axis C of the winding arm motor 76. When the rotating plate 73 is rotated, the rotating plate 73 is rotated. The upper ends of the rollers 71 supported by 73 move by a distance corresponding to the same central angle in the virtual circumferential direction. When the upper end portion of the roller 71 is moved in the virtual circumferential direction by rotating the rotating plate 73, the roller 71 is inclined in the virtual circumferential direction as shown in FIGS. At this time, the rollers 71a to 71e are uniformly inclined at an equal angle.

  The rotating plate 73 is provided with a rubber ring 81 so as to surround the outer peripheral surface thereof, and the yarn Y wound around the roller 71 is interposed between the rotating plate 73 and the rubber ring 81 as described later. It is conveyed toward the winding unit 6 through the gap. At this time, since the yarn Y is conveyed between the rotating plate 73 and the rubber ring 81 while being interposed between them, the fluff of the yarn Y is laid down. Further, since the yarn Y is sandwiched between the rotating plate 73 and the rubber ring 81, a balloon is generated in the yarn Y that is unwound from the roller 71 and travels toward the winding unit 6. Can be prevented.

  A pulley 82 is attached to the lower surface of the drive rollers 71a to 71e, and the pulley 82 is connected to a speed reducer 77 and a speed reducer 77 that transmit the rotation of the winding arm motor 76 with a predetermined reduction ratio. Connected to the output shaft 136 of the winding arm motor 76 via the pulley 78a, the pulley 78b connected to the pulley 78a, the pulley 78c connected to the pulley 82, and the shaft 79 connecting the pulley 78b and the pulley 78c. Has been. Accordingly, when the winding arm motor 76 rotates, the rotation is transmitted to the pulley 82 via the speed reducer 77, the pulleys 78a to 78c, and the shaft 79, whereby the driving rollers 71a to 71e to which the pulley 82 is attached. Rotates.

  That is, in this embodiment, a winding arm motor 76 (guide member drive motor) that rotates the winding arm 75 as described later also serves as a motor (roller drive motor) for rotating the drive rollers 71a to 71e. ing. In the present embodiment, the transmission mechanism according to the present invention is a combination of the speed reducer 77, the pulleys 78a to 78c, the shaft 79, and the pulley 82 that connect the winding arm motor 76 and the driving rollers 71a to 71e. It corresponds to.

  On the other hand, the pulleys 78b and 78c and the shaft 79 are not provided for the adjustment roller 71f, and the adjustment roller 71f is a driven roller that does not rotate by the rotation of the winding arm motor 76. The pulley 82 is also provided on the lower surface of the adjustment roller 71f because the adjustment roller 71f is configured using the same components as the drive rollers 71a to 71e.

  The three winding auxiliary members 74 are attached to the base material 72 so as to be separated from each other by about 120 ° so as to surround the lower end portion of the roller 71. The winding auxiliary member 74 has a winding auxiliary surface 74 a for smoothly connecting the outer peripheral surfaces of the rollers 71 at a portion located between the adjacent rollers 71. The auxiliary surface 74a forms a surface extending substantially continuously along the virtual circumferential direction. Further, the winding auxiliary surface 74a is inclined so that the upper part is located on the inner side in the radial direction of the virtual circumferences A1 to A3.

  The winding arm 75 (guide member) is for guiding the yarn Y to the lower end portion of the roller 71, and has a yarn path 128 through which the yarn Y can travel. It is configured to be rotatable. The winding arm 75 is connected to the outer peripheral surface of the output shaft 136, and the linear portion 141 extending radially outward from the outer peripheral surface of the output shaft 136 and the lower end portion of the roller 71 bypassing the first magnet support 137. It is comprised from the curved part 142 which reaches to the vicinity.

  An opening 143 that faces the lower end of the roller 71 is formed at the tip of the curved portion 142. With this configuration, the winding arm 75 can rotate around the axis C between the first magnet support 137 and the second magnet support 139 described above. By rotating counterclockwise in a plan view, the yarn Y on the yarn feeding section 5 side guided into the yarn path 128 of the winding arm 75 is rotated at the lower end of the six rollers 71 (winding as described later). It is designed to be wound around the side edge).

  Further, the yarn path 128 of the winding arm 75 communicates with the flow path 144 formed in the output shaft 136. A balancer 145 formed integrally with the output shaft 136 is provided on the opposite side of the winding arm 75 and the output shaft 136.

  The winding arm motor 76 (guide member driving motor) is a position-controllable motor such as a servo motor, a DC brushless motor, or a stepping motor, and is electrically connected to the control unit 109. Is capable of freely controlling the rotation speed of the winding arm 75, that is, the winding speed Vb as the yarn speed of the yarn Y wound around the roller 71. In the present embodiment, the combination of the winding arm 75 and the winding arm motor 76 serves as the yarn winding mechanism and the yarn drawing means according to the present invention.

  Further, by changing the rotation speed of the winding arm motor 76, the rotation speeds of the drive rollers 71a to 71e also change. At this time, the rotational speeds of the drive rollers 71a to 71e are determined by the rotational speed of the winding arm motor 76, the reduction ratio of the speed reducer 77, and the ratio of the diameters of the pulleys 78a to 78c and 82.

  Further, on the yarn clearer 15 side of the winding arm motor 76, a yarn passage 146 communicating with the passage 144 of the output shaft 136, and an upper thread guide pipe that opens into the yarn passage 146 and that extends from the winding arm 75 side. A blow-down nozzle 148 having a blow-down flow path 147 formed to be inclined toward the 26th side is provided.

  A pressure air source 151 is connected to the downflow passage 147 via a connection pipe 149 and a connection pipe 150, and an electromagnetic wave electrically connected to the control unit 109 is connected between the connection pipe 149 and the connection pipe 150. A valve 152 is provided.

  With this configuration, when the control unit 109 opens the electromagnetic valve 152 and the pressurized air from the pressure air source 151 is discharged to the yarn passage 146 through the connection pipe 150, the connection pipe 149, and the downflow passage 147 in this order, In the yarn path 128 of the arm 75, the flow path 144 of the output shaft 136 of the winding arm motor 76, and the yarn flow path 146 of the blow-down nozzle 148, an air flow from the roller 71 side toward the upper thread guide pipe 26 side is present. It is supposed to be formed. And by this air flow, the yarn end of the yarn Y wound around the roller 71 is sucked and pulled out to the yarn joining portion 8 side.

  The winding arm motor 76 is provided with a rotary encoder 153 capable of detecting the rotation angle of the winding arm 75, and the rotary encoder 153 is electrically connected to the control unit 109. The rotary encoder 153 transmits an angle signal corresponding to the rotation angle of the winding arm 75 to the control unit 109.

  Further, at the lower end of the blow-down nozzle 148, a pull-out sensor 154 capable of detecting that the yarn end of the yarn Y wound in the accumulator 61 is actually pulled out to the yarn joining portion 8 side is provided. . The pull-out sensor 154 is electrically connected to the control unit 109 and transmits a pull-out detection signal to the control unit 109 when detecting that the yarn end of the yarn Y has been pulled out to the yarn joining unit 8 side. It has become.

  Furthermore, the accumulator 61 is provided with a storage upper limit sensor 155, a storage lower limit sensor 156, and a storage lower limit sensor 157 for detecting the storage amount of the yarn Y. The storage upper limit sensor 155, the storage lower limit sensor 156, and the storage lower limit sensor 157 are the yarn Y wound around the outer periphery of the roller 71 when the storage amount of the yarn Y in the accumulator 61 is 300 m, 200 m, and 40 m, respectively. It is positioned at a position facing the upper end of the bundle.

  Here, 300 m is a length that is equal to or longer than the length of the yarn Y wound by the winding unit 6 while repeating the yarn joining described later, for example, three times (at least once). Even when the winding of the yarn Y in the winding unit 6 is continued during the yarn joining, the yarn deficiency of the yarn Y in the accumulator 7 is less likely to occur.

  In this configuration, the storage upper limit sensor 155, the storage lower limit sensor 156, and the storage lower limit sensor 157 detect the presence of the yarn Y at the opposing position, respectively, to the control unit 109, respectively, A storage amount lower limit signal and a storage amount lower limit signal are transmitted.

  Next, the configuration of the control unit 109 of the winding unit 2 will be described. That is, the control unit 109 shown in FIG. 4 includes a CPU (Central Processing Unit) that is an arithmetic processing unit, a ROM (Read Only Memory) that stores a control program executed by the CPU and data used for the control program, and the like. The RAM (Random Access Memory) for temporarily storing data when the program is executed. Then, the control program stored in the ROM is read by the CPU and executed on the CPU, whereby the control program executes hardware such as the CPU, the winding drum motor control unit 160, the winding arm motor control unit 161. The drawn yarn length calculation unit 163 and the upper pipe control unit 164 function.

  The winding drum motor control unit 160 controls the rotational speed of the winding drum motor 116. When the storage amount detected by the storage amount detection unit falls below a predetermined value, the winding unit 6 causes the yarn to rotate. The winding speed Va for winding Y is reduced.

  Specifically, when the winding drum motor control unit 160 stops receiving the storage amount lower limit signal from the storage lower limit sensor 156, the winding drum motor control unit 160 gently increases the winding speed Va so that the yarn layer of the package 30 is not disturbed. Decelerate. Further, when receiving the storage amount lower limit signal from the storage lower limit sensor 157 is interrupted, the winding drum motor control unit 160 quickly decelerates the winding speed Va and stops winding by the winding unit 6.

  In this way, the winding drum motor control unit 160 decelerates the winding speed Va when the amount of yarn Y stored in the accumulator 61 decreases, and further, when the amount of yarn Y stored in the accumulator 61 becomes extremely small, the winding unit 6 performs winding. Therefore, the yarn deficiency of the yarn Y in the accumulator 61 is prevented in advance.

  The winding arm motor control unit 161 controls the winding arm motor 76, and when winding the yarn Y around the roller 71, the winding arm motor 76 is controlled so that the winding arm 75 rotates in one direction. When the yarn end of the yarn Y on the roller 71 is pulled out to the yarn joining portion 8 side, the winding arm motor 76 is controlled so that the winding arm 75 rotates in the direction opposite to that when winding the yarn. To do.

  The drawn yarn length calculation unit 163 is drawn from the accumulator 61 to the yarn joining unit 8 based on the rotation angle of the winding arm 75 detected by the rotary encoder 153 from the time when the drawing sensor 154 detects the yarn Y. The drawn yarn length as the yarn length of the warp yarn Y is calculated.

  The upper pipe control unit 164 compares the yarn defect length acquired from the yarn defect detection signal with the drawn yarn length calculated by the drawn yarn length calculation unit 163, and when the drawn yarn length reaches the yarn defect length, The upper thread guide pipe 26 is turned in a clamped state, and the thread Y on the winding unit 6 side is guided to the splicer device 14 and set.

  Next, operation | movement of the winding unit 2 is demonstrated using FIGS.

  The operator of the automatic winder (winding unit 2) unwinds the yarn Y from the yarn supplying bobbin 21, and uses the yarn Y as a yarn unwinding assisting device 12, a yarn feeler 37, a first tensor 41, a yarn clearer 15, and an accumulator. 61, the second tensor 42, and the waxing device 17 are fixed to the take-up bobbin 22. The yarn path of the yarn Y in the accumulator 61 is as shown in FIG. That is, the operator passes the yarn Y through the pull-out sensor 154, the yarn passage 146 of the blow-down nozzle 148, the passage 144 of the output shaft 136, and the yarn passage 128 of the winding arm 174 in order. In this state, the operator pulls the yarn Y from the opening 143 side of the winding arm 75, winds it around the roller 71 and the winding auxiliary member 74, for example, about 5 to 20 times, and sets it on the second tensor 42. Note that the yarn Y in FIG. 2 is drawn thick for convenience of explanation and the winding interval is large, but in reality, the roller 71 is always wound around 600 times at a small winding interval. A bundle of warp yarns Y is stored.

(Normal winding)
In this state, as shown in FIG. 5, when the power of the winding unit 2 is turned on (S300), the control unit 109 causes the winding speed Va of the yarn Y by the winding unit 6 to be 1200 m / min, for example. The rotation of the winding drum 24 is started, and the rotation of the winding arm motor 76 is started so that the winding speed Vb of the yarn Y in the accumulator 61 is, for example, 1500 m / min (S310).

  Then, the yarn Y wound around the roller 71 is unwound by the winding unit 6 sequentially from the upper end side, and is wound around the package 30 while being traversed by the winding drum 24.

  At the same time, the yarn Y on the yarn supplying section 5 side is guided to the lower end portion of the roller 71 by the winding arm 75 as shown in FIG. By rotating clockwise, the roller 71 is wound around the lower end portion.

  Here, the rollers 71 are spaced apart from each other. As described above, the winding auxiliary member 74 is disposed so as to surround the lower end portion of the roller 71, and the lower end portion of the roller 71 is wound around the lower end portion. Since the auxiliary surface 74a forms a surface extending substantially continuously along the virtual circumferential direction, the yarn Y is wound across the roller 71 and the winding auxiliary surface 74a. Therefore, the yarn Y can be smoothly wound around the roller 71.

  At this time, the driving rollers 71a to 71e are also rotated, and the yarn Y wound around the roller 71 by the winding arm 75 is conveyed by the driving rollers 71a to 71e. Here, as described above, since the driving rollers 71a to 71e are inclined in the virtual circumferential direction, as shown in FIG. 6, the yarn Y conveyed to the driving rollers 71a to 71e is unwound side end portions. Move upward (feed direction). On the other hand, the adjustment roller 71f, which is a driven roller, rotates following the conveyance of the yarn Y by the rotation of the drive rollers 71a to 71e. Thus, in this embodiment, since the yarn Y moves upward by being conveyed to the roller 71, the load (frictional force) applied to the yarn Y when moving upward is reduced. Further, the yarn Y is transported on the roller 71, so that the fluff of the yarn Y is laid down.

  Further, the yarn Y wound around the lower end portion of the roller 71 and the winding auxiliary member 74 is moved upward by the rotation of the driving rollers 71a to 71e, and the winding of the winding auxiliary member 74 is wound. It moves upward along the inclination of the auxiliary surface 74a. In the state where the yarn Y is wound around the roller 71 and the winding auxiliary member 74, the friction force is generated by the yarn Y coming into contact with the winding auxiliary surface 74a as compared with the state where the yarn Y is wound only around the roller 71. The amount of yarn Y transported by the rotation of the drive rollers 71a to 71e is reduced by the amount of occurrence, but the yarn Y is transported upward along the inclined winding auxiliary surface 74a. Becomes uniform.

  Further, when the rotation plate 73 is rotated as described above, the inclination angle of the roller 71 in the imaginary circumferential direction increases as the rotation angle increases, and FIG. 6A and FIG. 6 (b) in which the inclination angle of the roller 71 is larger than that of the roller 71, the drive rollers 71a to 71e are rotated by the same amount as the inclination angle of the roller 71 in the virtual circumferential direction becomes larger. When the yarn Y is moved, the upward movement amount h of the yarn Y, that is, the upward movement speed of the yarn Y increases.

  The higher the moving speed of the yarn Y by the driving rollers 71a to 71e with respect to the winding speed of the yarn Y around the roller 71 by the winding arm 75, the greater the winding interval of the yarn Y wound around the roller 71. . Accordingly, the winding interval of the yarn Y wound around the roller 71 is changed by changing the inclination angle of the roller 71 in the virtual circumferential direction in accordance with the type of the yarn Y to be wound around the winding bobbin 22. can do.

  Further, when the roller 71 is inclined in the virtual circumferential direction, the roller 71 is not inclined in the radial direction of the virtual circumferences A1 to A3, and the upper end portion and the lower end portion thereof are the virtual circumferences A1 to A3. Assuming that the roller 71 is at the same position in the radial direction, the central portion of the roller 71 is located on the innermost side, and the portion closer to the both end portions is located on the outer side. Therefore, the winding circumference of the yarn Y wound around the central portion of the roller 71 is the shortest, and the winding circumference of the yarn Y wound around the portion close to both ends becomes longer. Note that the difference in the winding circumference of the yarn Y to be wound becomes more prominent as the inclination angle of the roller 71 in the virtual circumferential direction increases.

  On the other hand, when the yarn Y wound around the roller 71 is conveyed by the driving rollers 71a to 71e, the yarn Y is conveyed from a portion where the roller 71 is wound to a portion where the winding circumference of the yarn Y wound around that portion is longer. It is difficult to do.

  From the above, in the roller 71, the range in which the yarn Y can be substantially wound and stored is the lower end of the roller 71 and the vicinity of the central portion where the winding circumference of the wound yarn Y is the shortest. Only between the parts. That is, the yarn Y can be wound only about half of the rollers 71.

  However, in the present embodiment, since the upper end portions of the drive rollers 71a to 71e are inclined so as to be located inside the lower end portion, the innermost portion of the drive rollers 71a to 71e is more than the center portion thereof. Will also go upwards. Thereby, the range which can wind substantially the thread | yarn Y among the rollers 71 becomes wide, and the length of the thread | yarn Y which can be stored can be lengthened. In the present embodiment, the storage upper limit sensor 155 detects the presence of the uppermost yarn Y within a range in which the yarn can be wound.

  Furthermore, the rollers 71a to 71e are inclined in the radial direction of the virtual circumferences A1 to A3 so that the upper end portion (unwinding side end portion) is located inside the lower end portion (winding side end portion). The winding circumference of the yarn Y wound around the roller 71 does not increase toward the unwinding direction in which the yarn Y is unwound by the winding unit 6. Therefore, the yarn Y does not stay in a part of the roller 71 and the storage is not delayed.

  Further, if there is no adjustment roller 71f, and instead rollers having the same inclination angle as the drive rollers 71a to 71e are arranged, the roller 71 is located on the upper end side within the range in which the yarn Y can be wound. Therefore, the yarn Y conveyed by the roller 71 is conveyed from the portion of the roller 71 where the winding circumference of the yarn Y to be wound becomes longer to the portion where the winding circumference becomes shorter. At this time, the yarn Y may be loosened.

  However, in the present embodiment, since the adjustment roller 71f that is inclined so that the upper end portion is located outside the lower end portion is disposed, the adjustment roller 71f indicated by a one-dot chain line in FIG. Compared with the case where the inclination of the virtual circumferences A1 to A3 in the radial direction is the same as that of the other drive rollers 71a to 71e, as shown by the solid line in FIG. The winding circumference of the yarn Y to be wound becomes longer by the amount inclined to the angle, and the degree to which the winding circumference of the yarn Y to be wound becomes longer becomes greater toward the upper end portion side. As a result, the winding circumference of the yarn Y wound around each part of the roller 71 becomes uniform, and the yarn Y is not loosened as described above.

  In this way, at the time of normal winding in which the yarn Y is wound around the package 30 in a state where the yarn Y is connected from the yarn supplying unit 5 to the winding unit 6, the control unit 109 is as shown in FIG. The presence or absence of a yarn breakage signal is confirmed (S320), the presence or absence of a yarn defect detection signal is confirmed (S330), the presence or absence of an empty bobbin signal is confirmed (S340), and the storage amount upper limit signal is received. Is confirmed (S350).

  When a yarn break signal is received (S320: YES), when a yarn defect detection signal is received (S330: YES), and when an empty bobbin signal is received (S340: YES), FIG. After executing the control flow shown in FIGS. 8 and 9 (S325, S335, S345), the control flow returns to the control flow of FIG.

  Further, since the winding speed Vb is higher than the winding speed Va for a while from the start of winding, the storage amount of the yarn Y in the accumulator 61 increases and eventually the storage amount of the yarn Y reaches 300 m. Then, the storage upper limit sensor 155 transmits a storage amount upper limit signal to the control unit 109. As shown in FIG. 5, when receiving the storage amount upper limit signal from the storage upper limit sensor 155 (S350: YES), the control unit 109 changes the winding speed Vb from, for example, 1500 m / min to 1200 m / min (S360). Thereby, the winding speed Va and the winding speed Vb coincide with each other, and the storage amount of the accumulator 61 becomes constant.

(When thread breaks)
Next, the operation shown in the control flow of FIG. 7 when yarn breakage occurs will be described. When yarn breakage occurs and the control unit 109 receives a yarn breakage signal from the yarn clearer 15 (S320: YES), the control unit 109 first stops the rotation of the winding arm 75 (S410).

  Next, the control unit 109 switches the electromagnetic valve 152 to the open state to form an air flow from the roller 71 side to the upper yarn guide pipe 26 side in the yarn path 128 of the winding arm 75 (S420). .

  At the same time, the control unit 109 switches the suction port 26b of the upper thread guide pipe 26 from the closed state to the open state, thereby moving the upper thread guide pipe 26 from the suction port 26b side to the negative pressure source 120 side. An air flow is formed (S420).

  Next, the winding arm motor control unit 161 controls the winding arm motor 76 so that the winding arm 75 rotates at a low speed in a direction opposite to that when the winding arm 75 winds the yarn Y, that is, clockwise in a plan view. (S430), a state of waiting for reception of a drawer detection signal from the drawer sensor 154 is entered (S440: NO).

  Then, the yarn end of the yarn Y existing on the lower end portion of the roller 71 is sucked into the opening 143 of the winding arm 75 and the suction port of the upper yarn guide pipe 26 via the yarn path 28 of the winding arm 75 and the like. 26b. At this time, since the winding arm motor 76 is a motor whose position can be controlled, the winding arm 75 can be accurately moved to a position facing the yarn end of the yarn Y located at the lower end of the roller 71. With this, the yarn Y can be reliably sucked from the opening 143.

  At this time, since the yarn Y passes through the withdrawal sensor 154, the withdrawal sensor 154 transmits a withdrawal detection signal to the control unit 109. When the drawer detection signal is received from the drawer sensor 154 (S440: YES), the control unit 109 switches the suction port 26b from the open state to the closed state while continuing the low speed rotation of the winding arm 75 and uses the clamp unit 26c. The yarn Y is clamped, and the upper yarn guide pipe 26 is turned from the upper side to the lower side around the shaft 26a, thereby guiding the yarn Y drawn from the accumulator 61 to the splicer device 14 of the yarn joining portion 8 (S450). ).

  At this time, when the upper thread guide pipe 26 turns, the thread Y is newly pulled out from the accumulator 61 by about 60 cm. At this time, the thread Y does not break between the clamp portion 26c and the roller 71. Further, the control unit 109 synchronizes the turning of the upper thread guide pipe 26 with the rotation of the winding arm 75. When the guide of the yarn Y to the splicer device 14 by the upper yarn guide pipe 26 is completed (S450), the control unit 109 stops the rotation of the winding arm 75 (S460).

  On the other hand, similarly to the upper yarn guide pipe 26, the lower yarn guide pipe 25 sucks and captures the yarn end of the yarn Y existing around the yarn feeler 37 and guides the yarn Y to the splicer device 14. Then, when the yarn Y on the accumulator 61 side and the yarn Y on the yarn feeding unit 5 side are set in the splicer device 14, the control unit 109 causes the splicer device 14 to execute a yarn splicing operation (S470).

  Thereafter, as shown in FIG. 2, the control unit 109 starts counterclockwise rotation of the winding arm 75 in plan view (S480), and returns to the normal winding state (S490). The rotational speed of the winding arm 75 at this time is set so that the winding speed Vb is 1500 m / min (S480).

(When detecting yarn defects)
Next, the operation shown in the control flow of FIG. 8 when a yarn defect is detected will be described. However, since a part of the operation at this time is the same as that at the time of yarn breakage, detailed description of the same operation as at the time of yarn breakage will be omitted below.

  When the yarn defect is detected and the control unit 109 receives the yarn defect detection signal and the yarn cutting signal from the yarn clearer 15, the control unit 109 operates in the order of S410 to S440 as in the case of the yarn breakage. When a withdrawal detection signal is received from the withdrawal sensor 154 (S440: YES), the withdrawal yarn length calculation unit 163 detects the winding arm detected by the rotary encoder 153 from the time when the withdrawal sensor 154 detects the yarn Y. A rotation angle of 75 is acquired (S570), and the drawn yarn length is calculated based on the rotation angle (S580).

  Then, the upper pipe control unit 64 compares the length of the yarn defect acquired from the yarn defect detection signal with the drawn yarn length calculated by the drawn yarn length calculating unit 63 (S590). Then, the upper pipe control unit 164 waits until the drawn yarn length reaches the yarn defect length (S590: NO), and when it reaches the yarn defect length (S590: YES), the above S450 ~ By performing the operation in the order of S480, the yarn splicing and returning to the normal winding state are performed.

(At the time of bobbin change)
Next, the operation when the yarn feeding bobbin 21 becomes empty will be described. However, since a part of the operation in this case is the same as that at the time of yarn breakage, a detailed description of the same operation as at the time of yarn breakage will be omitted below.

  When the yarn supplying bobbin 21 becomes empty and the control unit 109 receives an empty bobbin signal from the yarn feeler 37 (S340: YES), the current yarn supplying bobbin 21 is discharged and a new yarn supplying bobbin 21 is supplied. The yarn is loaded into the holding unit 60, the yarn Y of the yarn supplying bobbin 21 is guided, and the yarn can be caught and sucked into the lower yarn guide pipe 25 (S710). Then, as in the case of yarn breakage, the yarn splicing and return to the normal winding state are performed by the operations of S410 to S440.

  In the winding unit 2, at least the yarn is obtained by unwinding the yarn Y stored in the rotary storage drum 71 even when yarn joining is performed in the yarn joining portion 8 by operating as described above. While the joining operation is performed once, the winding unit 6 can continue winding the yarn Y around the package 30. That is, the yarn joining portion 8 can perform yarn joining without interrupting the winding of the yarn Y onto the package 30 in the winding portion 6.

  Further, in the yarn winding unit 2 having the configuration as described above, the yarn storage unit 9 is disposed between the yarn feeding bobbin 21 and the winding unit 6 to interrupt the tension transmission of the yarn Y, thereby supplying the yarn. It is possible to prevent the tension variation due to the traverse variation of the winding unit 6 from being transmitted to the unwinding tension portion of the yarn bobbin 21. Furthermore, by attaching the unwinding assisting device 12 to the yarn feeding bobbin 21, the yarn unwinding from the yarn feeding bobbin 21 can be performed stably, so that the yarn breakage is prevented and the yarn feeding bobbin 21 The unwinding speed can be increased. Therefore, the unwinding efficiency from the yarn feeding bobbin 21 can be improved.

  Next, modified examples in which various changes are made to the present embodiment will be described. However, components having the same configuration as in the present embodiment are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  In the above-described embodiment, the rotation plate 73 that can rotate about the axis C is rotated, and the upper end portion of the roller 71 is moved in the virtual circumferential direction, whereby the roller 71 moves in the virtual circumferential direction. However, the present invention is not limited to this.

  For example, both the upper end portion and the lower end portion of the roller 71 are fixed to a rotation plate that can rotate about the axis C, and the two rotation plates are rotated in opposite directions to each other. The inclination angle of the roller 71 in the virtual circumferential direction may be changed by moving the upper end portion and the lower end portion of 71 to opposite sides of the virtual circumferential direction. Furthermore, the angle changing mechanism for changing the inclination angle of the roller 71 in the virtual circumferential direction may be realized by a configuration other than the rotating plate.

  Furthermore, the winding interval of the yarn Y may be changed by a mechanism different from the inclination angle changing mechanism. For example, the speed reducer 77 is a variable speed reducer (variable speed change mechanism) configured so that the speed reduction ratio can be changed. By changing the speed reduction ratio with the variable speed reducer, the winding speed of the yarn Y by the winding arm 75 can be increased. The winding interval of the yarn Y wound around the driving rollers 71a to 71e can be changed by changing the ratio with the rotational speed of the driving rollers 71a to 71e (moving speed of the yarn Y upward). It may be.

  Alternatively, for example, the speed reducer 77, the pulleys 78a to 78c, and the shaft 79 are not provided, and instead of the winding arm motor 76, a motor (roller driving motor) for rotating the driving rollers 71a to 71e. And a speed control mechanism for individually controlling the rotation speed of the winding arm motor 76 and the rotation speed of the roller drive motor, and the ratio of these rotation speeds is changed by the speed control mechanism. As a result, the ratio between the winding speed of the yarn Y by the winding arm 75 and the rotational speed of the drive rollers 71a to 71e (moving speed of the yarn Y upward) is changed, and the yarn is wound around the drive rollers 71a to 71e. The winding interval of the yarn Y may be changed.

  These mechanisms are provided together with the tilt angle changing mechanism, and the winding interval of the yarn Y wound around the roller 71 may be changed by a combination thereof.

  Further, when the type of the yarn Y wound around the winding bobbin 22 is determined in advance, a winding interval changing mechanism for changing the winding interval of the yarn Y wound around the roller 71 as described above is provided. It does not have to be.

  Further, in the above-described embodiment, the adjustment roller 71f is a driven roller that is not rotated by the rotation of the winding arm motor 76, but the adjustment roller 71f is also a winding arm motor similar to the drive rollers 71a to 71e. The roller rotated by the rotation of 76 may be used.

  In the above-described embodiment, all of the five rollers 71a to 71e except for the adjustment roller 71f are drive rollers, but only some of them are drive rollers, and the other rollers are driven. It may be a roller.

  In the above-described embodiment, the upper end portions of the drive rollers 71a to 71e are located on the inner side of the lower end portion, but the upper end portions and the lower end portions of the drive rollers 71a to 71e have the same virtual circumference ( For example, it is located on any one of the virtual circumferences A1 to A3) and may not be inclined in the radial direction of the virtual circumferences A1 to A3.

  Further, in the above-described embodiment, one of the six rollers 71 adjusts the winding peripheral length of the wound yarn Y that is inclined so that the upper end portion is positioned outside the lower end portion. However, the number of adjusting rollers may be two or more. Alternatively, the adjustment roller may not be provided.

  Further, in the above-described embodiment, when the rotation plate 73 is rotated, the adjustment roller 71f is configured to move along the virtual circumferential direction together with the drive rollers 71a to 71e. However, the present invention is not limited to this, and the inclination angle of the adjustment roller 71f may be changed independently.

  The number of rollers 71 is not limited to six in the above-described embodiment, and may be two to five or seven or more. As the number of rollers 71 increases, the number of parts increases, but the winding circumference of the yarn Y that can be wound around the rollers 71 becomes longer.

  Further, in this embodiment, the winding arm 75 and the winding arm motor 76 constitute both the yarn winding mechanism and the yarn drawing mechanism according to the present invention. The yarn winding mechanism and the yarn drawing mechanism may be provided separately as long as the yarn Y can be wound around the roller 71 and the yarn Y can be pulled out from the roller 71. Another configuration may be used.

  In the above embodiment, the yarn Y on the downstream side is all wound around the roller 71 when the yarn breaks, when the yarn defect is detected, or when the bobbin is changed. However, at the time of yarn breakage, yarn defect detection, and bobbin change, the occurrence is detected in advance, and the driving of the winding arm 75 is stopped before the downstream yarn Y is completely wound around the roller 71. You can also. For example, when the yarn defect is detected, the cutter provided in the yarn clearer 15 cuts the yarn Y and simultaneously stops the driving of the winding arm 75. When the bobbin is changed, a sensor for detecting the remaining yarn amount of the yarn feeding bobbin 21 is attached to the yarn unwinding assisting device 12 to monitor the remaining yarn amount of the yarn feeding bobbin 21. Further, it is possible to implement an embodiment in which the occurrence of the empty state of the yarn supplying bobbin 21 is detected in advance and the driving of the winding arm 75 is stopped before all the downstream yarn Y is wound around the roller 71.

  In this way, by stopping the driving of the winding arm 75 before the yarn Y is completely wound around the roller 71, the yarn end of the yarn Y is stopped in a state where it is hung below the blowing nozzle 148 of the accumulator 61. Can do.

  Therefore, the upper yarn guide pipe 26 can catch the yarn end hanging down below the accumulator 61. Therefore, it is possible to reduce the yarn Y drawing process by the yarn end drawing mechanism, and the splicing operation can be performed. Increases efficiency. In this embodiment, since the withdrawal sensor 154 is provided at the lower end of the blow-down nozzle 148, the yarn end of the yarn Y stored in the accumulator 61 is stopped at a position where it can be received by the upper yarn guide pipe 26. That is, it is possible to detect a state in which the yarn end is reliably stopped in a state where the yarn end hangs down below the accumulator 61. Accordingly, it is possible to reduce the time required to draw the yarn end of the yarn Y from the yarn accumulating portion to the yarn joining portion side.

  As described above, the drawing mechanism of the present invention can draw not only the yarn Y completely wound up in the accumulator 61 but also the yarn Y in a state stopped below the accumulator 61 to the yarn joining portion 8 side. .

  In the above description, the roller 71 is inclined in the virtual circumferential direction. However, the roller 71 may not be inclined in the virtual circumferential direction.

2 Yarn winding device 5 Yarn winding unit 6 Yarn storage unit 9 Yarn supply unit 21 Yarn supply bobbin 30 Package 71a to 71f Roller 73 Rotating plate 74 Winding arm 76 Winding arm motor 77 Reduction gear

Claims (14)

A yarn feeding section for unwinding the spun yarn from the yarn feeding bobbin;
A yarn winding unit for winding the spun yarn as a package;
Provided between the yarn feeding section and the yarn winding section, and comprising a yarn storage section for storing spun yarn,
The yarn reservoir is
A yarn storage body for winding and storing the spun yarn;
A yarn winding mechanism for winding the spun yarn around the yarn reservoir;
Have
The storage body is composed of a plurality of rollers arranged so that the axis is positioned on the first virtual circumference and rotatably provided ,
The yarn reservoir is
A roller drive motor that rotates at least one of the plurality of rollers as a drive roller;
By arranging the rotation shafts of the plurality of rollers to be inclined in the circumferential direction of the first virtual circumference, the spun yarn wound around the plurality of rollers is unwound by the yarn winding unit. A yarn winding device, wherein the yarn winding device is conveyed toward the unwinding direction . 2. The yarn winding device according to claim 1 , wherein the yarn storage unit further includes a winding interval changing unit that changes a winding interval of the spun yarn wound around the plurality of rollers. The winding interval changing means, each of said plurality of rollers, wherein it in claim 2, characterized in having the first virtual circle of an angle changing mechanism for changing the inclination angle in the circumferential direction Yarn winding device. The angle changing mechanism is
The yarn winding device according to claim 3 , wherein the yarn winding device is a mechanism that moves at least one end of the plurality of rollers in a circumferential direction of the first virtual circumference. The yarn winding mechanism is configured to wind a spun yarn around a winding side end that is one end of the plurality of rollers,
The winding side ends of the plurality of rollers are attached so as to be located on the first virtual circumference,
The unwinding side end that is the other end of the majority of the plurality of rollers is disposed with reference to a second virtual circumference having a diameter smaller than that of the first virtual circumference. 5. The yarn winding device according to claim 3 , wherein the roller is disposed to be inclined in a radial direction of the first virtual circumference. Of the rollers not included in the majority of the rollers, the unwinding end of at least one roller is disposed on the basis of a third virtual circumference having a diameter larger than that of the first virtual circumference. The yarn winding device according to claim 5 , wherein the yarn winding device is an adjustment roller for adjusting a winding circumferential length of the yarn. The yarn winding device according to claim 6 , wherein the adjustment roller is a driven roller. A guide member configured to be rotatable around the plurality of rollers, and for guiding spun yarn to the plurality of rollers;
A guide member drive motor for rotating the guide member;
Further comprising
The yarn winding device according to any one of claims 1 to 7 , wherein the guide member and the guide member drive motor constitute the yarn winding mechanism. It is configured to be rotatable around the plurality of rollers, and further comprises a guide member for guiding spun yarn to the plurality of rollers,
The guide member is driven by the roller drive motor by being connected to the roller drive motor via a transmission mechanism,
The yarn winding device according to any one of claims 2 to 7 , wherein the yarn winding mechanism is configured by the guide member and the roller drive motor. The winding interval changing means is provided in the transmission mechanism, and constitutes a variable speed change mechanism capable of changing a ratio of rotational speeds of the roller drive motor and the drive roller. The yarn winding device according to 9 . A guide member configured to be rotatable around the plurality of rollers, and for guiding spun yarn to the plurality of rollers;
A guide member drive motor for rotating the guide member;
The yarn winding mechanism is configured by the guide member and the guide member drive motor,
The winding interval changing means, the rotational speed of the roller driving motor, according to claim 2-7, characterized in that it has a speed control mechanism for individually controlling the rotational speed of the guide member drive motor The yarn winding device according to any one of the above. The yarn reservoir is
The yarn winding device according to any one of claims 8 to 11 , further comprising a yarn drawing mechanism that draws the spun yarn wound around the plurality of rollers toward the yarn supplying unit. The guide member drive motor is capable of rotating the guide member in both directions,
The yarn winding device according to claim 12 , wherein the yarn drawing mechanism is further configured by the guide member and the guide member drive motor or the roller drive motor. The yarn supplying section assists the unwinding of the spun yarn from the yarn supplying bobbin by lowering a regulating member covering the core tube of the yarn supplying bobbin in conjunction with the unwinding of the spun yarn from the yarn supplying bobbin. The yarn winding device according to any one of claims 1 to 13, wherein a unwinding assisting device is provided.

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