JP2013056767A - Winding unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction in a tray conveying-type yarn winding device that can properly unravel yarns from a yarn feeding bobbin independently of the state of mounting of the yarn feeding bobbin relative to the tray.SOLUTION: The winding unit includes a tray holder 51, a yarn-layer sensor 36, and a tray-position adjusting mechanism. The tray holder 51 holds a conveying tray 19. The yarn-layer sensor 36 detects a position of a yarn feeding bobbin 15 placed on the conveying tray 19. The tray-position adjusting mechanism adjusts the position of the conveying tray 19 held by the tray holder 51 by operating the tray holder 51 on the basis of the detection results output from the yarn-layer sensor 36.

Description

  The present invention relates to a winding unit that forms a package by unwinding a yarn from a yarn feeding bobbin that is carried on a carrying tray.

  A yarn winding device that unwinds a yarn from a yarn feeding bobbin and winds the unwound yarn around a winding bobbin to form a package is known. This type of yarn winding device is described in Patent Document 1, for example.

  Patent Document 1 discloses a configuration provided with a unwinding assisting device for assisting unwinding of the yarn from the yarn supplying bobbin. The unwinding assisting device includes a regulating member disposed above the yarn feeding bobbin. This regulating member is for assisting the unwinding of the yarn from the yarn feeding bobbin by contacting the balloon formed on the upper portion of the yarn feeding bobbin and applying an appropriate tension to the balloon. .

  The automatic winder described in Patent Document 1 includes a sensor for detecting the chase portion of the yarn feeding bobbin. And it is comprised so that a regulation member may be lowered | hung in conjunction with the fall of a chase part. Thereby, even if the position where the balloon is formed changes as the yarn is unwound from the yarn feeding bobbin, the regulating member can be made to follow, so that an appropriate tension can be applied to the balloon. .

  Moreover, the automatic winder described in Patent Document 1 is configured to convey a tray on which a yarn feeding bobbin is mounted along an appropriate tray conveyance path. With this configuration, the yarn feeding bobbin can be supplied to the bobbin setting unit.

JP 2009-286608 A Japanese Utility Model Publication No. 6-65371

  In order to apply an appropriate tension to the balloon by the unwinding assist device, it is preferable that the positional relationship between the yarn feeding bobbin and the regulating member is always constant. Therefore, conventionally, in the configuration in which the yarn feeding bobbin is carried on the tray as in Patent Document 1, the tray on which the yarn feeding bobbin to be unwound is placed is positioned at a predetermined position (a position directly below the regulating member). It was configured as follows.

  However, in an automatic winder, yarn feeding bobbins having various shapes and inner diameters are supplied depending on the yarn type. Depending on the shape and inner diameter of the yarn feeding bobbin, the yarn feeding bobbin is attached straight to the tray. There may not be. When the yarn feeding bobbin is tilted in this way, the regulating member cannot be properly brought into contact with the balloon formed above the yarn feeding bobbin, and the yarn unwinding tension becomes unstable and the package In some cases, the quality deteriorated.

  Patent Document 2 describes a configuration in which a bobbin fixing member that can be deformed in a loosely fitted state and a crimped state with respect to the bobbin is provided on the outer periphery of the peg of the transport tray. According to Patent Document 2, this makes it possible to reliably insert the bobbin vertically with respect to the tray with inexpensive equipment. However, even with the configuration of Patent Document 2, depending on the inner diameter and shape of the yarn feeding bobbin, the yarn feeding bobbin may not be appropriately fixed by the bobbin fixing member. Therefore, in an environment where yarn feeding bobbins having various shapes and inner diameters are supplied depending on the yarn type, it is considered that centering may not be reliably performed with the configuration of Patent Document 2.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to appropriately feed a yarn from the yarn feeding bobbin in a tray transporting type yarn winding device regardless of the state of the yarn feeding bobbin attached to the tray. It is to provide a configuration that can be solved.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to an aspect of the present invention, the following configuration of a winding unit that forms a package by winding a yarn unwound from a yarn feeding bobbin placed on a transport tray is provided. That is, the winding unit includes a tray holding unit, a bobbin detecting unit, and a tray position adjusting mechanism. The tray holding unit holds the transport tray. The bobbin detection unit detects a position of a yarn feeding bobbin placed on the transport tray. The tray position adjusting mechanism operates the tray holding unit based on the detection result of the bobbin detecting unit to adjust the position of the transport tray held by the tray holding unit.

  Thus, by adjusting the position of the transport tray, the yarn feeding bobbin can be aligned in the tray transport type winding unit. Thereby, the unwinding tension of the yarn from the yarn supplying bobbin is stabilized, and high speed unwinding is possible.

  The winding unit is preferably configured as follows. That is, the tray position adjusting mechanism sets the position of the unwinding side end of the yarn feeding bobbin to a preset target position based on the detection result of the driving unit that drives the tray holding unit and the bobbin detecting unit. A control unit that controls the driving unit to operate the tray holding unit so as to match.

  With this configuration, the yarn feeding bobbin can be aligned at a predetermined position. Therefore, the yarn of the yarn feeding bobbin can be unwound appropriately.

  In the winding unit described above, it is preferable that the bobbin detector detects an unwinding side end of the yarn feeding bobbin.

  That is, by adjusting the position of the transport tray based on the detection result of the unwinding side end of the yarn supplying bobbin, the unwinding side end can be accurately aligned with the target position.

  The winding unit is preferably configured as follows. That is, the winding unit includes a unwinding assisting device that assists unwinding of the yarn from the yarn feeding bobbin. The unwinding assisting device includes a regulating member that comes into contact with a balloon that is generated when the yarn from the yarn feeding bobbin is unwound. The target position is determined based on the unwinding center of the restricting member.

  Thus, an optimum balloon can be formed by aligning the unwinding side end of the yarn supplying bobbin with respect to the regulating member.

  The winding unit is preferably configured as follows. That is, the restriction member is a cylindrical member. The winding unit moves the yarn feeding bobbin from the position where the bobbin detecting unit detects the yarn feeding bobbin to the target position where the center of the unwinding side end of the yarn feeding bobbin matches the axis of the cylindrical member. A storage unit capable of storing the drive amount of the tray holding unit necessary for the movement is further provided. The control unit determines the position of the unwinding side end of the yarn feeding bobbin based on the position of the transport tray when the bobbin detecting unit detects the yarn feeding bobbin and the storage content of the storage unit. The drive unit is driven to match the target position.

  As described above, the amount of movement of the transport tray necessary for adjusting the yarn feeding bobbin to the target position can be set in advance. Thereby, the position of the unwinding end of the yarn feeding bobbin can be accurately adjusted to the target position with simple control.

  The winding unit is preferably configured as follows. That is, the restricting member and the bobbin detecting unit are configured to be integrally movable up and down. The bobbin detection unit also functions as a yarn layer detection unit that detects the yarn layer of the yarn feeding bobbin in order to determine the movement position of the regulating member.

  As described above, the cost can be reduced by one sensor having both the function of detecting the bobbin and the function of detecting the yarn layer.

  In the winding unit, when the bobbin detecting unit cannot detect the unwinding side end of the yarn supplying bobbin when adjusting the position of the yarn supplying bobbin, the control unit moves the bobbin detecting unit downward. It is preferable to move.

  Thereby, even when a short bobbin is supplied, the unwinding side end of the yarn feeding bobbin can be detected.

  The winding unit is preferably configured as follows. That is, the tray holding unit rotates in contact with the transport tray to thereby transport the transport tray, and an elastic support unit that elastically pushes the transport tray from the opposite direction of the transport guide. . The drive unit drives the transport guide.

  With this configuration, the movement in the direction in which the conveyance tray is advanced is performed by driving the conveyance guide by the driving unit, and the movement in the direction in which the conveyance tray is returned is performed by the elastic force of the elastic support unit. That is, the position of the transport tray can be adjusted in both the forward and reverse directions by one drive unit. Moreover, since the conveyance tray can be sandwiched and fixed firmly by the conveyance guide and the elastic support portion, the adjustment accuracy of the position of the conveyance tray can be improved.

  In the winding unit described above, any one of the elastic support portion and the conveyance guide is in contact with the core tube of the yarn feeding bobbin, thereby indirectly pushing the conveyance tray through the core tube. It is preferable to provide.

  Thereby, since the yarn supplying bobbin can be pressed against the transport tray, the yarn supplying bobbin can be fixed and accurate positioning can be performed.

  The winding unit is preferably configured as follows. That is, the elastic support portion includes a support arm that contacts the transport tray or a core tube of the yarn feeding bobbin and presses the transport tray, a biasing member that biases the support arm, and the support arm is attached to the support arm. And a stopper that regulates a range that can be moved by the biasing member.

  Thereby, the tray holding part which hold | maintains a conveyance tray is realizable with simple structure. Further, by providing the stopper, the support arm can be prevented from being shaken out. This also prevents the support arm from interfering with the conveyance of the conveyance tray.

  The winding unit is preferably configured as follows. That is, the drive unit is a stepping motor that drives the transport guide. The winding unit includes a position sensor for detecting the position of the conveyance guide.

  By using the stepping motor as a drive source, it is possible to easily control the drive of the transport guide.

The front view which shows the whole structure of the automatic winder provided with the winding unit which concerns on one Embodiment of this invention. Side surface sectional drawing of a conveyance tray and the yarn feeding bobbin mounted in this. The side view of a winding unit. The perspective view of the unwinding assistance apparatus vicinity. The side view explaining a mode that a movable member is lowered | hung following a descent | fall of a chase part. The top view of a yarn feeding part. The top view of the yarn supply part at the time of conveyance tray discharge. The top view which shows the mode of a conveyance guide. The side view which shows a mode that the conveyance tray is inserted | pinched by the conveyance guide and the elastic support part. The side view which shows the mode before performing centering control. The side view which shows a mode when a thread layer sensor is interrupted | blocked by the yarn feeding bobbin in centering control. The side view which shows the yarn feeding bobbin of a bobbin detection position in centering control. The side view which shows the yarn feeding bobbin of a target position in centering control. The side view which shows a mode that the short yarn supply bobbin is mounted in the conveyance tray.

  Next, an automatic winder according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a schematic configuration of an automatic winder 10 of the present embodiment.

  As shown in FIG. 1, the automatic winder 10 mainly includes a plurality of winding units 11 arranged side by side, a machine base control device 12, a yarn feeding bobbin supply device 13, and a doffing device 14. Yes.

  The machine base control device 12 is configured to be able to communicate with each winding unit 11. The operator of the automatic winder 10 can manage the plurality of winding units 11 collectively by appropriately operating the machine base control device 12.

  Each winding unit 11 is configured to unwind the yarn from the yarn supplying bobbin 15 and wind the wound yarn 16 around the winding bobbin while traversing. The winding bobbin in which the yarn 16 is wound is called a package 18.

  Between the yarn feeding bobbin supply device 13 and each winding unit 11, a yarn feeding bobbin conveying mechanism (not shown) configured by a belt conveyor or the like is disposed. The yarn supplying bobbin conveying mechanism is configured to convey a conveying tray 19 (FIG. 2) on which the yarn supplying bobbin 15 is placed to each winding unit 11.

  The transport tray 19 includes a peg portion 19a, a bobbin placement portion 19b, and a base portion 19c. As shown in FIG. 2, the peg portion 19a is formed in a substantially cylindrical shape or a substantially conical shape protruding in a substantially vertical direction. The peg portion 19a has an outer diameter that can be inserted inside the core tube 15a of the yarn feeding bobbin 15. The bobbin placement portion 19b has a substantially cylindrical shape whose axis coincides with the peg portion 19a, and its upper surface is substantially horizontal. Further, the outer diameter of the bobbin placement portion 19b is set larger than the outer shape of the core tube 15a of the yarn feeding bobbin 15. As a result, as shown in FIG. 2, the peg portion 19 a can be inserted into the core tube 15 a of the yarn feeding bobbin 15, and the yarn feeding bobbin 15 can be placed on the transport tray 19 in a substantially upright state. Moreover, the base part 19c is made into the substantially cylindrical shape which made the axis line the bobbin mounting part 19b correspond, and the external shape is set further larger than the bobbin mounting part 19b.

  The yarn supplying bobbin supplying device 13 is configured to place the yarn supplying bobbins 15 one by one on the conveying tray 19 and then send them to the yarn supplying bobbin conveying mechanism. With this configuration, the yarn supplying bobbin 15 can be supplied to each winding unit 11.

  The doffing device 14 travels to the position of the winding unit 11 when the package 18 becomes full in each winding unit 11 (a state in which a predetermined amount of yarn is wound), It is configured to remove and set an empty winding bobbin. The operations of the yarn feeding bobbin supply device 13 and the doffing device 14 are controlled by a machine control device 12.

  Next, the configuration of the winding unit 11 will be described with reference to FIG.

  Each winding unit 11 includes a yarn supplying unit 20 and a winding unit 21.

  The yarn supplying unit 20 is configured to hold the yarn supplying bobbin 15 placed on the transport tray 19 at a predetermined position. Thereby, the yarn 16 can be appropriately unwound from the yarn supplying bobbin 15.

  The winding unit 21 includes a cradle 23 and a winding drum 17.

  The cradle 23 has a pair of bearing centers, and the winding bobbin 22 (or the package 18) is rotatably supported by sandwiching the winding bobbin 22 between the bearing centers. The cradle 23 is configured such that the outer periphery of the supporting package 18 can be brought into contact with the outer periphery of the winding drum 17.

  The winding drum 17 is for traversing the yarn 16 on the surface of the package 18 and rotating the package 18. The winding drum 17 is rotationally driven by a drive source (not shown) such as an electric motor. The package 18 can be driven and rotated by rotationally driving the winding drum 17 in a state where the outer periphery of the package 18 is in contact with the winding drum 17. A spiral traverse groove (not shown) is formed on the outer peripheral surface of the winding drum 17. The yarn 16 unwound from the yarn feeding bobbin 15 is wound around the surface of the package 18 while being traversed (traversed) with a certain width by the traverse groove. Thereby, the package 18 having a constant winding width can be formed.

  In addition, each winding unit 11 includes, in order from the yarn feeding unit 20 side, in the yarn traveling path between the yarn feeding unit 20 and the winding unit 21, the unwinding assisting device 24, the tension applying device 25, and the yarn joining unit. The apparatus 26 and the yarn quality measuring device 27 are arranged. Each winding unit 11 includes a unit control unit 39 for controlling each component included in the winding unit 11. The unit control unit 39 is configured to be communicable with the machine base control device 12. In the following description, the upstream side and the downstream side in the traveling direction of the yarn 16 may be simply referred to as “upstream side” and “downstream side”.

  The unwinding assisting device 24 includes a regulating member 28 that can cover the core tube of the yarn feeding bobbin 15. The restricting member 28 is configured in a substantially cylindrical shape and is disposed so as to contact a balloon formed on the yarn layer upper portion of the yarn feeding bobbin 15. The balloon is a portion where the yarn 16 unwound from the yarn supplying bobbin 15 is swung around by centrifugal force. By bringing the regulating member 28 into contact with the balloon, a tension is applied to the yarn 16 of the balloon portion, and the yarn 16 is prevented from being swung excessively. Thereby, the yarn 16 can be appropriately unwound from the yarn supplying bobbin 15.

  The tension applying device 25 applies a predetermined tension to the traveling yarn 16. In the present embodiment, the tension applying device 25 is configured by a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth. The movable comb teeth are biased so that the comb teeth are engaged with each other. By passing the yarn 16 while bending the interdigitated comb teeth, an appropriate tension can be applied to the yarn 16 and the quality of the package 18 can be improved. However, the tension applying device 25 is not limited to the gate type, but may be a disk type, for example.

  When the yarn 16 between the yarn supplying bobbin 15 and the package 18 is in a divided state for some reason, the yarn joining device 26 combines the lower yarn on the yarn supplying bobbin 15 and the upper yarn on the package 18 side. It is intended for splicing. In the present embodiment, the yarn joining device 26 is configured as a splicer device that twists yarn ends together by a swirling air flow generated by compressed air. However, the yarn joining device 26 is not limited to the splicer device, and for example, a mechanical knotter or the like can be adopted.

  The yarn quality measuring device 27 is configured to monitor the thickness of the yarn 16 with an appropriate sensor. Further, a cutter (not shown) is provided in the vicinity of the yarn quality measuring device 27 for cutting the yarn 16 immediately when the yarn quality measuring device 27 detects an abnormality in the yarn thickness.

  On the lower side and upper side of the yarn joining device 26, a lower yarn catching pipe 29 that catches and guides the yarn (lower yarn) on the yarn feeding bobbin 15 side, and a yarn (upper yarn) on the package 18 side is caught and guided. An upper thread catching pipe 30 is provided. A suction port 31 is formed at the tip of the lower thread catching pipe 29, and a suction mouth 32 is provided at the tip of the upper thread catching pipe 30. Appropriate negative pressure sources are connected to the two capture pipes 29 and 30, respectively, and a suction flow can be applied to the suction port 31 and the suction mouth 32.

  In this configuration, when the yarn is split between the yarn feeding bobbin 15 and the package 18, the lower yarn catching pipe 29 catches the yarn on the yarn feeding bobbin side and introduces it to the yarn joining device. The yarn on the package side is captured by the guide pipe and introduced into the yarn joining device. By driving the yarn joining device 26 in this state, the upper yarn and the lower yarn are joined, and the yarn 16 is made continuous between the yarn supplying bobbin 15 and the package 18. Thereby, winding of the thread | yarn 16 to the package 18 can be restarted.

  Next, the unwinding assisting device 24 will be described in detail with reference to FIG. The regulating member 28 of the unwinding assisting device 24 is composed of a fixed member 28a and a movable member 28b.

  The fixing member 28a is fixed to the main body frame of the winding unit 11 via an appropriate member. The fixing member 28a has a substantially cylindrical shape. One movable member 28b is also formed in a substantially cylindrical shape, and is arranged with its axis aligned with the fixed member 28a so as to cover the outside of the fixed member 28a. The central axes of the fixed member 28a and the movable member 28b are arranged so as to be substantially vertical. In the following description, an extension line of the central axis (unwinding center) of the fixed member 28a and the movable member 28b configured in a cylindrical shape is referred to as a virtual line 70.

  The unwinding assisting device 24 includes a lifting mechanism (not shown) for moving the movable member 28b in the substantially vertical direction along the axis. The operation of the lifting mechanism is controlled by the unit control unit 39.

  The unwinding assisting device 24 includes a sensor holding member 35 that moves integrally with the movable member 28b. A thread layer sensor 36 for detecting an upper end surface (hereinafter referred to as a chase portion) of the thread layer of the yarn feeding bobbin 15 is fixed to the sensor holding member 35. The yarn layer sensor 36 is configured as a transmissive photosensor having a light projecting unit 36a and a light receiving unit 36b. That is, when the space between the light projecting unit 36a and the light receiving unit 36b is blocked by the chase unit, the chase unit is detected. The detection result of the yarn layer sensor 36 is sent to the unit controller 39.

  During yarn winding, the unit control unit 39 performs control so that the movable member 28b (and sensor holding member 35) is lowered to a position where the yarn layer sensor 36 can detect the chase portion. Accordingly, as shown in FIG. 5, the movable member 28b (and the sensor) is made to follow the lowering of the chase portion (reduction of the yarn of the yarn feeding bobbin 15) due to the yarn 16 from the yarn feeding bobbin 15 being unwound. The holding member 35) can be lowered. As a result, the positional relationship between the chase portion and the movable member 28b can be kept constant, so that the tension applied to the balloon can be kept constant and the yarn 16 can be appropriately unwound from the yarn feeding bobbin 15. it can.

  Next, the configuration of the yarn feeding unit 20 will be described. The yarn supplying unit 20 is configured to take the transport tray 19 transported along the bobbin transport path into the winding unit 11 and hold it at a predetermined position.

  As shown in FIG. 6, the bobbin conveyance path includes a supply conveyor 40 that conveys the conveyance tray 19 on which the yarn feeding bobbin 15 is placed to each winding unit 11, and a collection that collects the conveyance tray 19 discharged from each winding unit 11. And a conveyor 41. The supply conveyor 40 is disposed on the back side of the winding unit 11, and the recovery conveyor 41 is disposed on the front side of the winding unit 11.

  The yarn supplying unit 20 mainly includes a passage panel 42, a turntable 43, and a conveyance guide 44.

  The passage panel 42 is provided substantially horizontally and is disposed above the conveying surfaces of the supply conveyor 40 and the recovery conveyor 41. In addition, a tray passage 45 that connects the supply conveyor 40 and the recovery conveyor 41 is formed in the passage panel 42. The tray passage 45 is formed as an elongated gap having substantially the same width as the outer diameter of the bobbin placement portion 19b.

  The transport tray 19 transported on the supply conveyor 40 is sequentially taken into the tray passage 45. The bobbin placement portion 19b of the transport tray 19 taken into the tray passage 45 is guided so as to fit into the tray passage 45 (see FIG. 6). Thereby, the transport tray 19 is transported along the tray path 45. In the following description, the direction in which the transport tray 19 is transported from the supply conveyor 40 toward the collection conveyor 41 through the tray passage 45 is referred to as a transport direction. In the present embodiment, the transport direction is substantially the front-rear direction of the apparatus (substantially up-down direction in FIG. 6).

  A turntable 43 is disposed below the passage panel 42 at the entrance of the tray passage 45. The turntable 43 is formed in a disk shape as shown in FIG. 8, and its upper surface is substantially horizontal. The turntable 43 is configured to be rotationally driven in one direction (counterclockwise direction in FIG. 6) by a driving force of a stepping motor (driving unit) 47 via a cam mechanism 48 and a one-way clutch 49. The transport tray 19 taken into the tray path 45 is placed on the turntable 43 and is transported toward the downstream side by the rotation of the turntable 43. The stepping motor 47 is controlled by the motor control unit 50. The motor control unit 50 is configured to be able to communicate with the unit control unit 39 described above.

  In the middle of the tray passage 45, a conveyance guide 44 for damming the conveyance tray 19 conveyed by the turntable 43 is disposed.

  Specifically, the transport guide 44 has a locking portion 44 a that comes into contact with the base portion 19 c of the transport tray 19 that is transported through the tray passage 45. The transport tray 19 is transported by the turntable 43 so that the transport tray 19 is dammed by bringing the locking portion 44a into contact with the transport tray 19 from the downstream side in the transport direction. FIG. 6 shows a state where the transport tray 19 is blocked by the locking portion 44a of the transport guide 44. FIG.

  In the winding unit 11 of the present embodiment, the yarn supplying unit 20 has a tray holding unit 51. As shown in FIG. 3, the tray holding unit 51 is configured to hold the transport tray 19 on which the yarn feeding bobbin 15 on which the yarn is unwound by the winding unit 11 is placed. As shown in FIG. 6, the position where the tray holding unit 51 holds the transport tray 19 is on the downstream side in the transport direction from the position where the transport guide 44 holds the transport tray 19. When the tray holding unit 51 holds the transport tray 19 at an appropriate position, the yarn 16 can be appropriately unwound from the yarn feeding bobbin 15 placed on the transport tray 19. The detailed configuration of the tray holding unit 51 will be described later.

  The yarn 16 is unwound from the yarn feeding bobbin 15 on the transport tray 19 held by the tray holding unit 51, and the yarn feeding bobbin 15 becomes empty (the yarn is not wound around the yarn feeding bobbin 15). When the yarn is fed, the yarn feeding section 20 discharges the transport tray 19 on which an empty yarn feeding bobbin 15 is placed and feeds the transport tray 19 on which a new yarn feeding bobbin 15 is placed.

  Specifically, it is as follows. The conveyance guide 44 is configured to be able to rotate clockwise and counterclockwise in FIG. 6 by a driving force of a stepping motor 47 via a cam mechanism 48. When it is detected that the yarn feeding bobbin 15 on the transport tray 19 held by the tray holding unit 51 is empty, the unit control unit 39 transmits a bobbin replacement signal to the motor control unit 50. The motor control unit 50 that has received the bobbin replacement signal appropriately controls the stepping motor 47 to rotate the conveyance guide 44 clockwise from the state of FIG. 6 via the cam mechanism 48.

  As a result, as shown in FIG. 7, the transport tray 19 previously held by the tray holding unit 51 is released, and the transport tray 19 is recovered by the push-out unit 44 b formed in the transport guide 44. Extrude towards The conveyance tray 19 pushed out to the collection conveyor 41 is conveyed by the collection conveyor 41 and collected by the yarn feeding bobbin supply device 13. At the same time, one transport tray 19 that has been blocked by the engaging portion 44a of the transport guide 44 is taken downstream in the transport direction.

  Subsequently, the motor control unit 50 appropriately controls the stepping motor 47 to rotate the conveyance guide 44 counterclockwise from the state of FIG. 7 via the cam mechanism 48. As a result, the position of the transport guide 44 returns to the state shown in FIG. 6, so that the new transport tray 19 that has been taken in is held by the tray holding portion 51 and the transport tray 19 on the upstream side in the transport direction is held by the locking portion 44 a. It can be dammed again.

  As described above, the yarn feeding unit 20 is configured to take in the transport tray 19, discharge the transport tray 19, and hold the transport tray 19 by the rotation of the transport guide 44.

  Next, a characteristic configuration of the present embodiment will be described.

  First, as shown in FIG. 5, consider a case where the yarn feeding bobbin 15 is placed upright with respect to the transport tray 19. Since the conventional winding unit is based on the premise that the yarn supplying bobbin 15 stands upright in this way, the conveyance tray 19 on which the yarn supplying bobbin 15 is placed is positioned directly below the regulating member 28 (more precisely, The virtual line 70 and the axis of the peg portion 19a of the transport tray 19 are held at the same position). The position of the transport tray 19 at this time (the position in FIG. 5) is referred to as a reference position of the transport tray 19. By holding the transport tray 19 at the reference position, the axis of the yarn feeding bobbin 15 placed on the transport tray 19 can be made to coincide with the virtual line 70 (the central axis of the regulating member 28).

  Thereby, since the regulating member 28 can be appropriately brought into contact with the balloon formed above the yarn supplying bobbin 15, the yarn from the yarn supplying bobbin 15 can be appropriately unwound. . In particular, in the state of FIG. 4 in which the axis of the yarn feeding bobbin 15 and the virtual line 70 coincide, the position of the yarn feeding bobbin 15 (particularly the tip position of the yarn feeding bobbin 15) is constant. The chase portion of the yarn feeding bobbin 15 can be stably detected by the yarn layer sensor 36. Accordingly, the movable member 28b can be appropriately lowered following the descent of the chase portion, so that the covering state of the restriction member 28 with respect to the balloon is always constant, and a stable tension is applied to the balloon. Can do.

  However, since the yarn feeding bobbins having various shapes and inner diameters are supplied to the winding unit 11, the yarn feeding bobbin 15 may not be stuck straight into the transport tray 19 as shown in FIG. 10, for example. obtain. Therefore, actually, even if the transport tray 19 is held at the reference position, the position of the yarn feeding bobbin 15 placed on the transport tray 19, particularly the position of the tip (unwinding side end) 15 b of the yarn feeding bobbin 15. Was not constant.

  When the position of the yarn supplying bobbin 15 is not constant in this way, the position of the chase portion of the yarn supplying bobbin 15 cannot be stably detected by the yarn layer sensor 36, and as a result, a regulating member for the yarn supplying bobbin 15 28 is not stable. As a result, there is a problem that the regulating member 28 cannot be properly brought into contact with the balloon formed above the yarn feeding bobbin 15 and an appropriate tension cannot be applied to the balloon.

  Therefore, the winding unit 11 of the present embodiment is configured to be able to adjust the position of the transport tray 19 held by the yarn supplying unit 20.

  This will be specifically described below. As described above, the yarn feeding unit 20 of the present embodiment includes the tray holding unit 51 that holds the transport tray 19 on which the yarn feeding bobbin 15 is placed. The tray holding unit 51 is configured to sandwich and hold the transfer tray 19 between the transfer guide 44 and the elastic support unit 52 described above.

  As shown in FIGS. 6 and 9, the transport guide 44 is provided with a tray contact portion 53 that comes into contact with the peripheral surface of the bobbin placement portion 19 b of the transport tray 19 from the upstream side in the transport direction. This tray contact part 53 is comprised from the sheet metal. As shown in FIG. 9, the tray contact portion 53 is bent at a portion in contact with the transport tray 19 so that the end surface of the sheet metal does not face the transport tray 19 side. Thereby, since the end surface of a sheet metal does not contact the conveyance tray 19, the conveyance tray 19 can be prevented from being damaged.

  As shown in FIG. 6, the elastic support portion 52 includes a support arm 57 configured to be rotatable about a support shaft 54. Further, a biasing member (not shown) is arranged on the support shaft 54, and biases the support arm 57 in the clockwise direction of FIG. A stopper 55 that contacts the support arm 57 is disposed on the passage panel 42 in order to prevent the support arm 57 from rotating indefinitely by the urging force of the urging member. The state in which the stopper 55 prevents the support arm 57 from rotating is shown in FIG. In addition, by stopping the support arm 57 at an appropriate position by the stopper 55 as described above, it is possible to prevent the conveyance of the conveyance tray 19 from being obstructed by the support arm 57.

  The support arm 57 is disposed such that its side surface can come into contact with the peripheral surface of the bobbin placement portion 19 b of the transport tray 19 from the downstream side in the transport direction. Further, since the support arm 57 is urged clockwise as described above, the side surface of the support arm 57 elastically pushes the peripheral surface of the bobbin mounting portion 19b of the transport tray 19 from the downstream side in the transport direction. be able to. On the other hand, as shown in FIG. 9, the tray contact portion 53 of the conveyance guide 44 is in contact with the bobbin placement portion 19b from the side opposite to the support arm 57 (upstream in the conveyance direction). Therefore, the tray holding portion 51 of the present embodiment is configured to hold the transport tray 19 elastically between the bobbin contact portion 56 of the elastic support portion 52 and the side surface of the support arm 57.

  A bobbin contact portion 56 is attached to the top surface of the tip of the support arm 57. When the side surface of the support arm 57 comes into contact with the bobbin placement portion 19b of the transport tray 19, the bobbin contact portion 56 has a lower end portion (more precisely, a yarn feed bobbin 15 placed on the transport tray 19). The bobbin is arranged so as to be in contact with the outer periphery of the lower end of the core tube 15a. The manner in which the bobbin contact portion 56 is in contact with the lower end portion of the core tube 15a of the yarn feeding bobbin 15 is shown in, for example, FIG. A portion of the bobbin contact portion 56 that comes into contact with the yarn feeding bobbin 15 is made of a relatively soft material (specifically, plastic). Thereby, it can prevent that the yarn feeding bobbin 15 which the bobbin contact part 56 contacted is damaged.

  Since the support arm 57 is urged clockwise, the bobbin contact portion 56 attached to the support arm 57 can elastically push the yarn feeding bobbin 15 from the downstream side in the transport direction. On the other hand, as described above, the tray contact portion 53 of the transport guide 44 is in contact with the transport tray 19 from the side opposite to the direction in which the bobbin contact portion 56 pushes (upstream side in the transport direction). As a result, as shown in FIG. 9, the yarn feeding bobbin 15 is pressed against the peg portion 19 a of the transport tray 19 by being pressed by the bobbin contact portion 56. In this way, the posture of the yarn feeding bobbin 15 can be fixed by pressing the yarn feeding bobbin 15 against the transport tray 19 by the bobbin contact portion 56. Therefore, the yarn feeding bobbin during the bobbin centering control (described later). It can prevent more reliably that the attitude | position of 15 changes.

  In the above configuration, it can be said that the bobbin contact portion 56 of the elastic support portion 52 indirectly pushes the peg portion 19 a of the transport tray 19 through the yarn feeding bobbin 15. Therefore, the tray holding part 51 of the present embodiment is also configured to hold the transport tray 19 indirectly by the bobbin contact part 56 of the elastic support part 52 and the tray contact part 53 of the transport guide 44. be able to. Thus, in the elastic support portion 52 of the present embodiment, the bobbin contact portion 56 has a function of holding the transport tray 19 in addition to the support arm 57. Thereby, it becomes possible to hold | maintain the conveyance tray 19 reliably, and it can prevent that the conveyance tray 19 inclines.

  As shown in FIG. 6, the tray contact portion 53 of the conveyance guide 44, the support arm 57 of the elastic support portion 52, and the bobbin contact portion 56 are arranged in a substantially C shape (V shape) in plan view. . As a result, the transport tray 19 sandwiched between the tray contact portion 53, the support arm 57, and the bobbin contact portion 56 is urged in the direction in which the C-shaped (V-shaped) spreads. It is pressed against the edge 45a. Thus, the transport tray 19 held by the tray holding unit 51 is supported at three points: the tray contact unit 53, the support arm 57 (and the bobbin contact unit 56), and the edge 45 a of the tray passage 45. It will be. Thus, by supporting the transport tray 19 at three points, the transport tray 19 can be stably held.

  Here, as described above, the conveyance guide 44 can be rotated clockwise or counterclockwise by controlling the stepping motor. Therefore, consider a case where the conveyance guide 44 is slightly rotated clockwise from the state of FIG. In this case, the tray contact portion 53 of the transport guide 44 moves slightly upstream in the transport direction. On the other hand, the bobbin contact portion 56 of the elastic support portion 52 elastically pushes the transport tray 19 from the downstream side in the transport direction. As a result, the transport tray 19 held by the tray holding portion 51 is pushed by the elastic support portion 52 and moves toward the upstream side in the transport direction.

  Next, consider a case where the conveyance guide 44 is slightly rotated counterclockwise from the state of FIG. In this case, the tray contact portion 53 of the transport guide 44 slightly moves downstream in the transport direction of the transport tray 19. At this time, the transport tray 19 is pushed toward the downstream side in the transport direction by the tray contact portion 53. At this time, the transport tray 19 can move downstream in the transport direction while pushing away the bobbin contact portion 56 of the elastic support portion 52.

  As described above, in the present embodiment, by rotating the conveyance guide 44, the conveyance tray 19 held by the tray holding unit 51 can be moved toward the upstream side or the downstream side in the conveyance direction. That is, by adjusting the rotation angle of the conveyance guide 44, the position where the tray holding unit 51 holds the conveyance tray 19 can be adjusted. The rotation angle of the conveyance guide 44 can be adjusted via the cam mechanism 48 when the motor control unit 50 controls the stepping motor 47. Therefore, it can be said that the motor control unit 50, the stepping motor 47, and the cam mechanism 48 constitute a tray position adjusting mechanism 58.

  Next, the centering control of the yarn feeding bobbin 15 by the tray holding part 51 and the tray position adjusting mechanism 58 configured as described above will be described in detail.

  As described above, there is a case where the yarn feeding bobbin 15 is stuck at an angle with respect to the transport tray 19 (for example, as shown in FIG. 10), so that the transport tray 19 is temporarily placed at the reference position (a position directly below the regulating member 28). ), The position of the yarn supplying bobbin 15 with respect to the regulating member 28 (particularly, the position of the tip 15b of the yarn supplying bobbin 15) cannot be made constant.

  Therefore, the tray position adjusting mechanism 58 moves the bobbin 19 to move the transport tray 19 so that the center of the tip 15b of the yarn supplying bobbin 15 coincides with a virtual line 70 passing through the axis of the regulating member 28 (state shown in FIG. 13). It is configured to perform centering control. Here, the position of the yarn supplying bobbin 15 when the center of the tip 15b of the yarn supplying bobbin 15 coincides with an imaginary line passing through the axis of the regulating member 28 (the position in FIG. 13) is set as a target position. Therefore, the centering control of the present embodiment is control for adjusting the yarn feeding bobbin 15 placed on the transport tray 19 to the target position.

  That is, even if the yarn supplying bobbin 15 is obliquely stuck in the transport tray 19, if the tip 15b of the yarn supplying bobbin 15 can be aligned with the virtual line 70 (the yarn supplying bobbin 15 can be adjusted to the target position). If possible, the positional relationship between the tip 15b of the yarn feeding bobbin 15 and the regulating member 28 is constant. Therefore, by performing the centering control, the regulating member 28 can be appropriately brought into contact with the yarn 16 unwound from the yarn feeding bobbin 15 regardless of the inclination of the yarn feeding bobbin 15.

  The centering control will be specifically described below. This centering control is performed when the transport tray 19 on which the empty yarn feeding bobbin 15 is placed is discharged and the tray holding portion 51 takes in the transport tray 19 on which a new yarn feeding bobbin 15 is placed.

  First, the tray position adjusting mechanism 58 drives the tray holding unit 51 to move the conveyance tray 19 held by the tray holding unit 51 (the conveyance tray 19 on which the new yarn feeding bobbin 15 is placed) in one direction. Let At this time, the direction in which the transport tray 19 is moved is a direction in which the yarn feeding bobbin 15 approaches the yarn layer sensor 36. For example, in the present embodiment, as shown in FIG. 10 and the like, the thread layer sensor 36 is disposed on the front side of the apparatus (right side in FIG. 10) when viewed from the virtual line 70. Therefore, in the present embodiment, the transport tray 19 held by the tray holding unit 51 is moved from the reference position toward the front side of the apparatus. More specifically, the motor control unit 50 appropriately controls the stepping motor 47 to rotate the transport guide 44 counterclockwise in FIG. 6 and direct the transport tray 19 toward the downstream side in the transport direction (device). Move it towards the front).

  When the transport tray 19 is moved toward the front side of the apparatus, at a certain point, the light projecting portion and the light receiving portion of the yarn layer sensor 36 are blocked by the tip 15b of the yarn feeding bobbin 15 (state shown in FIG. 11). ). That is, the yarn layer sensor 36 detects the tip 15b of the yarn feeding bobbin 15.

  When the leading end 15b of the yarn feeding bobbin 15 is detected by the yarn layer sensor 36, the tray position adjusting mechanism 58 drives the tray holding unit 51 to move the transport tray 19 held by the tray holding unit 51. Move it in the opposite direction. Specifically, the motor control unit 50 appropriately controls the stepping motor 47 to rotate the transport guide 44 clockwise in FIG. 6 so that the transport tray 19 faces the upstream side in the transport direction (substantially on the back of the apparatus). Move towards the side). At this time, the motor control unit 50 rotates the conveyance guide 44 clockwise at a slower speed than when the conveyance guide 44 is rotated counterclockwise. That is, the tray position adjusting mechanism 58 slowly moves the transport tray 19 toward the back side.

  When the transport tray 19 is moved from the state shown in FIG. 11 to the rear side of the apparatus, at a certain point, the light projecting portion and the light receiving portion of the yarn layer sensor 36 are not blocked by the tip 15b of the yarn feeding bobbin 15 ( The state of FIG. The position of the yarn feeding bobbin 15 when the tip 15b of the yarn feeding bobbin 15 is detached from the yarn layer sensor 36 is defined as a bobbin detection position. Since the tray position adjusting mechanism 58 moves the transport tray 19 slowly, the position (bobbin detection position) where the tip of the yarn feeding bobbin 15 is disengaged from the yarn layer sensor 36 can be accurately detected. Thus, since the position of the yarn feeding bobbin 15 can be detected by the yarn layer sensor 36, it can be said that the yarn layer sensor 36 also functions as a bobbin detection unit.

  Here, since the position of the yarn layer sensor 36 is known, the position of the tip 15b of the yarn feeding bobbin 15 at the bobbin detection position is constant. Therefore, by moving the yarn feeding bobbin 15 from the bobbin detection position by a fixed distance, the yarn feeding bobbin 15 can be adjusted to the target position.

  In the present embodiment, the motor control unit 50 stores a rotation angle of the conveyance guide 44 (an angle at which the conveyance guide 44 is rotated) necessary for moving the yarn feeding bobbin 15 at the bobbin detection position to the target position. A portion 59 is provided. In the centering control, when it is detected that the tip 15b of the yarn feeding bobbin 15 is disengaged from the yarn layer sensor 36 (state shown in FIG. 12), the motor control unit 50 of the tray position adjusting mechanism 58 The conveyance guide 44 is rotated clockwise from the position of the conveyance guide 44 by the rotation angle stored in the storage unit 59. Thereby, the conveyance tray 19 can be moved by a predetermined distance from the state of FIG. 12 toward the back side, and the yarn feeding bobbin 15 can be adjusted to the target position (state of FIG. 13).

  Further, when the yarn layer sensor 36 is configured to be movable, an input capable of inputting a horizontal distance between the moving position or the position of the yarn layer sensor 36 after the movement and the virtual line 70 passing through the axis of the regulating member 28. A part may be provided. By inputting the horizontal distance to the input unit, the rotation angle stored in the storage unit can be replaced.

  According to the above centering control, no matter how the yarn feeding bobbin 15 on the transport tray 19 is inclined, the center of the tip 15b of the yarn feeding bobbin 15 is an imaginary line 70 passing through the axis of the regulating member 28. Can be matched in the transport direction. As a result, the positional relationship between the tip 15b of the yarn feeding bobbin 15 and the regulating member 28 can be made constant regardless of the inclination of the yarn feeding bobbin 15, so that the yarn 16 unwound from the yarn feeding bobbin 15 can be removed. On the other hand, the regulating member 28 can be appropriately brought into contact with each other to keep the unwinding tension constant. Further, since the tip 15b of the yarn supplying bobbin 15 and the regulating member 28 are aligned, the chase portion of the yarn supplying bobbin 15 can be stably detected by the yarn layer sensor 36. Accordingly, the movable member 28b can be appropriately lowered following the lowering of the chase portion, and the unwinding tension can be kept constant. Therefore, the unwinding of the yarn 16 from the yarn supplying bobbin 15 is stabilized, and high speed unwinding is possible.

  The tray position adjustment mechanism 58 includes a position sensor 60 for defining the origin position of the stepping motor 47. The position sensor 60 is configured to detect that the rotation angle of the transport guide 44 has reached a predetermined rotation angle. The position sensor 60 may be attached to the conveyance guide 44 itself, or may be attached to the cam mechanism 48, for example. In the centering control described above, when the motor control unit 50 detects that the rotation angle of the conveyance guide 44 has reached a predetermined rotation angle based on information from the position sensor 60, the stepping motor 47 at that time is detected. Is defined as an origin, and the stepping motor 47 is controlled with the origin as a reference. Further, an actual value of the rotation angle of the conveyance guide 44 may be detected by an encoder-type position sensor capable of detecting the rotation position of the stepping motor 47, and the conveyance guide 44 may be driven based on the rotation angle. . In this case, since the rotation angle of the conveyance guide 44 can be accurately controlled, the conveyance tray 19 can be accurately adjusted to the target position. In the present embodiment, since a stepping motor is employed as a drive source for the conveyance guide 44, fine control of the rotation angle of the conveyance guide 44 is facilitated.

  By the way, since the yarn feeding bobbins 15 having various shapes are placed on the transport tray 19, there are cases where yarn feeding bobbins shorter than expected are placed. In the centering control, for example, as shown in FIG. 14, when the tip 15 b of the yarn feeding bobbin 15 is at a position lower than the yarn layer sensor 36, the yarn feeding bobbin 15 cannot be detected by the yarn layer sensor 36.

  In the centering control, if the yarn tray sensor 36 does not detect the yarn supply bobbin 15 even if the conveyance tray 19 is moved to the position where the yarn supply bobbin 15 should be detected by the yarn layer sensor 36, the unit The control unit 39 performs control so that the yarn layer sensor 36 (and the movable member 28b) is lowered by a certain distance. When the yarn layer sensor 36 is lowered, the tray position adjusting mechanism 58 performs the centering control again. According to this control, even when the short yarn supplying bobbin 15 is placed on the transport tray 19, the yarn supplying bobbin 15 can be reliably detected by the yarn layer sensor 36.

  As described above, the winding unit 11 of the present embodiment includes the tray holding unit 51, the yarn layer sensor 36, and the tray position adjusting mechanism 58. The tray holding unit 51 holds the transport tray 19. The yarn layer sensor 36 detects the position of the yarn feeding bobbin 15 placed on the transport tray 19. The tray position adjustment mechanism 58 operates the tray holding unit 51 based on the detection result of the yarn layer sensor 36 to adjust the position of the transport tray 19 held by the tray holding unit 51.

  Thus, by adjusting the position of the transport tray 19, the yarn feeding bobbin 15 can be aligned in the tray transport type winding unit 11. Thereby, the unwinding tension of the yarn 16 from the yarn supplying bobbin 15 is stabilized, and high-speed unwinding is possible.

  Further, the winding unit 11 of the present embodiment is configured as follows. In other words, the tray position adjusting mechanism 58 sets the position of the unwinding side end of the yarn feeding bobbin 15 in advance based on the detection result of the stepping motor 47 that drives the tray holding unit 51 and the yarn layer sensor 36. And a motor control unit 50 that controls the stepping motor 47 to operate the tray holding unit 51 so as to match the position.

  With this configuration, the yarn feeding bobbin 15 can be aligned at a predetermined position. Therefore, the yarn 16 of the yarn feeding bobbin 15 can be unwound appropriately.

  In the winding unit 11 of the present embodiment, the yarn layer sensor 36 detects the unwinding side end (tip 15b) of the yarn feeding bobbin 15.

  That is, by adjusting the position of the transport tray 19 based on the detection result of the unwinding side end of the yarn feeding bobbin 15, the unwinding side end can be accurately aligned with the target position.

  Further, the winding unit 11 of the present embodiment is configured as follows. That is, the winding unit 11 includes an unwinding assisting device 24 that assists unwinding of the yarn 16 from the yarn supplying bobbin 15. The unwinding assisting device 24 includes a regulating member 28 that comes into contact with a balloon that is generated when the yarn 16 from the yarn feeding bobbin 15 is unwound. The target position is determined based on the unwinding center of the regulating member 28.

  Thus, by aligning the unwinding side end portion of the yarn feeding bobbin 15 with respect to the regulating member 28, an optimum balloon can be formed.

  Further, the winding unit 11 of the present embodiment is configured as follows. That is, the regulating member 28 is a cylindrical member. The winding unit 11 moves from the position where the yarn layer sensor 36 detects the yarn feeding bobbin 15 to the target position where the center of the unwinding side end of the yarn feeding bobbin 15 matches the axis of the cylindrical member. A storage unit 59 that can store the drive amount of the tray holding unit 51 necessary for moving the yarn bobbin 15 (specifically, the rotation angle of the conveyance guide 44) is further provided. The motor control unit 50 determines the unwinding side end of the yarn feeding bobbin 15 based on the position of the transport tray 19 when the yarn feeding bobbin 15 is detected by the yarn layer sensor 36 and the stored contents of the storage unit 59. The stepping motor 47 is driven so that the position matches the target position.

  As described above, the amount of movement of the transport tray 19 necessary for adjusting the yarn feeding bobbin 15 to the target position can be set in advance. Thereby, the position of the unwinding end of the yarn feeding bobbin 15 can be accurately adjusted to the target position with simple control.

  Further, the winding unit 11 of the present embodiment is configured as follows. That is, the regulating member 28 and the yarn layer sensor 36 are configured to be integrally movable up and down. The yarn layer sensor 36 detects the yarn layer (chase portion) of the yarn feeding bobbin 15 in order to determine the movement position of the regulating member 28.

  As described above, the cost can be reduced by one sensor having both the function of detecting the bobbin and the function of detecting the yarn layer.

  In the winding unit 11 of the present embodiment, the unit control unit 39 adjusts the position of the yarn feeding bobbin 15, and if the yarn layer sensor 36 cannot detect the unwinding side end of the yarn feeding bobbin 15, The layer sensor 36 is moved downward.

  Thereby, even when a short yarn supplying bobbin is supplied, the unwinding side end of the yarn supplying bobbin can be detected.

  Further, the winding unit 11 of the present embodiment is configured as follows. That is, the tray holding unit 51 rotates in contact with the transport tray 19 to elastically push the transport tray 19 from the reverse direction of the transport guide 44 and the transport guide 44 that transports the transport tray 19. Unit 52. The stepping motor 47 drives the conveyance guide 44.

  With this configuration, the transport tray 19 is moved downstream by driving the transport guide 44 by the stepping motor 47, and the transport tray 19 is moved upstream by the elastic force of the elastic support portion 52. That is, the position of the transport tray 19 can be adjusted in both forward and reverse directions by one stepping motor 47. Further, since the transport tray 19 can be sandwiched and firmly fixed by the transport guide 44 and the elastic support portion 52, the adjustment accuracy of the position of the transport tray 19 can be improved.

  Further, in the winding unit 11 of the present embodiment, the elastic support portion 52 is in contact with the core tube 15a of the yarn feeding bobbin 15, thereby indirectly pushing the transport tray 19 through the core tube 15a. 56.

  Thereby, since the yarn feeding bobbin 15 can be pressed against the transport tray 19, the yarn feeding bobbin 15 can be fixed and accurate positioning can be performed.

  Further, the winding unit 11 of the present embodiment is configured as follows. That is, the elastic support portion 52 contacts the transport tray 19 or the core tube 15a of the yarn feeding bobbin 15 and pushes the transport tray 19, a biasing member that biases the support arm 57, and the support arm 57. Is provided with a stopper 55 for restricting the range of movement by the urging member.

  Thereby, the tray holding part for holding the transport tray 19 can be realized with a simple configuration. Further, by providing the stopper 55, the support arm 57 can be prevented from being shaken off. This also prevents the support arm 57 from interfering with the conveyance of the conveyance tray 19.

  The winding unit 11 is configured as follows. That is, the transport guide 44 is driven by the stepping motor 47. The winding unit 11 includes a position sensor 60 for detecting the position of the conveyance guide 44.

  By using the stepping motor as a drive source, it is possible to easily control the drive of the transport guide.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  In the tray holding part 51 of the above embodiment, the elastic support part 52 is configured to bring the support arm 57 into contact with the transport tray 19 and the bobbin contact part 56 with the core pipe of the yarn feeding bobbin 15. However, instead of this, when the bobbin contact portion 56 contacts the core tube of the yarn feeding bobbin 15, the side surface of the support arm 57 can be configured not to contact the transport tray 19. That is, the elastic support portion 52 may not be in direct contact with the transport tray 19. Even in this case, the bobbin contact portion 56 of the elastic support portion 52 can indirectly push the transport tray 19 through the core tube of the yarn feeding bobbin 15. Thereby, the conveyance tray 19 can be sandwiched and held by the elastic support portion 52 and the conveyance guide 44 (indirectly).

  Note that the support arm 57 and the bobbin contact portion 56 do not need to be separate, and the support arm 57 and the bobbin contact portion 56 may be formed integrally.

  Further, instead of the configuration in which the elastic support portion 52 is brought into contact with the yarn feeding bobbin 15, the conveyance guide 44 may be in contact with the yarn feeding bobbin 15. That is, the conveyance guide 44 may be configured to include the bobbin contact portion 56.

  Of course, both the conveyance guide 44 and the elastic support portion 52 may be in direct contact with the conveyance tray 19 and the bobbin contact portion 56 may be omitted. However, in this case, it is not possible to obtain the effect of the bobbin contact portion 56 in which the yarn feeding bobbin 15 is pressed against the peg portion 19a of the transport tray 19 and the yarn feeding bobbin 15 is fixed. For this reason, when the bobbin contact portion 56 is omitted, it is preferable that the yarn feeding bobbin 15 is fixed to the transport tray 19 by some other means. For example, as in Patent Document 2, a configuration in which the transport tray includes a bobbin fixing member can be employed.

  The configuration for driving the tray holding unit 51 is not limited to the above. For example, instead of a configuration driven by a stepping motor via a cam mechanism, a configuration driven by a gear may be used. Further, the drive source of the tray holding unit 51 is not limited to the stepping motor, and may be an appropriate servo motor.

  The motor control unit 50 can also be configured as a part of the function of the unit control unit 39. Further, instead of the configuration in which the motor control unit 50 includes the storage unit 59, the unit control unit 39 may include a storage unit 59.

  In the above-described embodiment, the yarn layer sensor 36 is disposed on the front side of the apparatus with respect to the virtual line 70, but may be configured to be disposed on the back side of the apparatus with respect to the virtual line 70. Further, a sensor (bobbin detection unit) for detecting the yarn feeding bobbin 15 during the centering control may be provided separately from the yarn layer sensor 36.

  In the above embodiment, the centering control has been described as being performed when the tray holding unit 51 takes in a new yarn feeding bobbin 15. However, the present invention is not limited to this, and centering control can be performed at an arbitrary timing as necessary.

11 Winding Unit 15 Yarn Supply Bobbin 19 Transport Tray 36 Yarn Layer Sensor 36 (Bobbin Detection Unit)
44 Conveyance guide 47 Stepping motor (drive unit)
51 Tray holding part 52 Elastic support part 58 Tray position adjusting mechanism

Claims (11)

A winding unit for winding a yarn unwound from a yarn feeding bobbin placed on a conveyance tray to form a package,
A tray holding unit for holding the transport tray;
A bobbin detector that detects the position of the yarn feeding bobbin placed on the transport tray;
A tray position adjusting mechanism that operates the tray holding unit based on the detection result of the bobbin detecting unit to adjust the position of the transport tray held by the tray holding unit;
A winding unit comprising: The winding unit according to claim 1,
The tray position adjusting mechanism is
A drive unit for driving the tray holding unit;
A control unit for operating the tray holding unit by controlling the driving unit to adjust the position of the unwinding side end of the yarn feeding bobbin to a preset target position based on the detection result of the bobbin detection unit. When,
A winding unit characterized by comprising: The winding unit according to claim 2,
The bobbin detection unit detects the unwinding side end of the yarn feeding bobbin. The winding unit according to claim 3,
A unwinding assisting device for assisting unwinding of the yarn from the yarn feeding bobbin,
The unwinding assisting device includes a regulating member that comes into contact with a balloon generated when unwinding the yarn from the yarn feeding bobbin,
The winding unit is characterized in that the target position is determined with reference to the unwinding center of the restricting member. The winding unit according to claim 4,
The restriction member is a cylindrical member,
Necessary for moving the yarn feeding bobbin from the position where the bobbin detecting unit detects the yarn feeding bobbin to the target position where the center of the unwinding side end of the yarn feeding bobbin matches the axial center of the cylindrical member A storage unit capable of storing a driving amount of the tray holding unit;
The control unit determines the position of the unwinding side end of the yarn feeding bobbin based on the position of the transport tray when the bobbin detecting unit detects the yarn feeding bobbin and the storage content of the storage unit. A winding unit that drives the drive unit so as to match the target position. The winding unit according to claim 5,
The restriction member and the bobbin detection unit are configured to be integrally movable up and down,
The winding unit is characterized in that the bobbin detection unit also functions as a yarn layer detection unit that detects a yarn layer of a yarn feeding bobbin in order to determine a movement position of the regulating member. The winding unit according to claim 6,
The control unit moves the bobbin detection unit downward when the bobbin detection unit cannot detect the unwinding side end of the yarn supply bobbin when adjusting the position of the yarn supply bobbin. Winding unit. The winding unit according to any one of claims 2 to 7,
The tray holding part is
A conveyance guide for conveying the conveyance tray by rotating in contact with the conveyance tray; and
An elastic support that elastically pushes the transport tray from the opposite direction of the transport guide;
With
The said drive part drives the said conveyance guide, The winding unit characterized by the above-mentioned. The winding unit according to claim 8,
One of the elastic support portion and the conveyance guide includes a bobbin contact portion that indirectly pushes the conveyance tray through the core tube by contacting the core tube of the yarn feeding bobbin. Winding unit. The winding unit according to claim 8 or 9,
The elastic support portion is
A support arm that supports the transport tray by contacting the transport tray or the core tube of the yarn feeding bobbin;
A biasing member that biases the support arm;
A stopper for regulating a range in which the support arm is moved by the biasing member;
A winding unit comprising: The winding unit according to claim 10,
The drive unit is a stepping motor that drives the transport guide,
A winding unit comprising a position sensor for detecting the position of the conveyance guide.

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