JP2014057422A - Lacing binding method of stator coil, and lacing binding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lacing binding method of a stator coil and a lacing binding device which can enhance productivity.SOLUTION: In a lacing binding method of a stator coil for binding a coil end projecting from an end face of a stator core with thread, the stator core S is sequentially moved to a lacing station LS, a binding station BS, and a taking-out station TS. In the lacing station LS, a lacing needle in which a hook with a tip to which the thread is hooked, and which moves in a radial direction and an axial direction of the stator core, and rotationally moves, and a thread feeding nozzle which feeds the thread from a tip, moves in the axial direction of the stator core S and rotationally moves are cooperated to rotate the stator core S and the thread is entangled and bound so as to wrap up the coil end, and then a knot is formed. In the binding station BS, an end part of the thread extended from the knot is pulled out and clamped by suction, and the knot is tightened by a pusher device and moved to a coil side to bind it.

Description

  The present invention relates to a lace binding method and a lacing binding apparatus for a stator coil in which a coil end protruding from an end face of a stator core is bound with a thread and bound.

  The coils of the stator core are formed so as to form a loop through the two selected grooves of the stator core, and at that time, portions where the coils protrude from both end faces of the stator core, that is, coil ends are formed. Since the coil end may come into contact with the rotor or the casing when mounted on various rotating machines, the coil end is bound and bound with a thread. This operation is performed by tying the coil ends into a net shape so as to knit the yarn.

  Patent Documents 1 and 2 below disclose such a stator coil racing device. The basic structure of these lacing apparatuses will be described with reference to FIG. 28. 11 is a coil end protruding from an end face of a stator core (not shown), 10 is a yarn feeding nozzle for feeding out the yarn 12, and 13 is a racing needle. . The yarn feeding nozzle 10 is disposed at the axial center of a stator core (not shown), and the tip is bent in a J-shape or an L-shape and faces the coil end 11 direction. Then, it moves up and down together with the racing needle 13 by a driving device (not shown) and swings as indicated by arrows AB in the figure. The racing needle 13 has a hook-like tip, moves up and down together with the yarn feeding nozzle 10, moves forward and backward in the axial direction, and swings as indicated by arrows CD in the figure.

  Next, the racing procedure will be described. First, as shown in FIG. 1A, the yarn 12 is in the state where the tip of the yarn supplying nozzle 10 is located below the coil end 11 and the tip of the yarn supplying nozzle 10 and the coil end. 11 is stretched between. At the start of actual operation, the thread 12 is pulled and stretched to a predetermined position by a hook bar (not shown), but details thereof will be omitted here. In the state described above, the racing needle 13 enters inward in the radial direction of the stator core, passes under the coil end 11, and reaches a position where it is engaged with the yarn 12. At this time, the yarn feeding nozzle 10 is rotated in the direction of arrow B, so that the yarn 12 is easily caught on the hook at the tip of the racing needle 13.

  In this state, as shown in FIG. 4B, the lacing needle 13 retracts by hooking the thread 12 on the hook at the tip thereof, and pulls the thread 12 from below the coil end 11. Thereafter, the racing needle 13 rotates in the direction of the arrow C and points the hook upward.

  Then, as shown in FIG. 3C, the yarn feeding nozzle 10 and the lacing needle 13 move upward to pull up the yarn 12 respectively. Thereby, the loop R1 of the yarn 12 is formed. In this state, the racing needle 13 is rotated in the direction of arrow D, and the hook is directed to the side again. Further, the yarn supplying nozzle 10 rotates in the direction of arrow A, and retracts the yarn 12 to a position where the tip of the racing needle 13 does not contact.

  Further, as shown in FIG. 4D, the racing needle 13 again enters the stator core in the radial direction, passes over the coil end 11, and reaches a position where it is engaged with the yarn 12. At this time, the yarn supplying nozzle 10 rotates in the direction of the arrow B so that the yarn 12 comes into contact with the racing needle 13 and is easily caught on the hook at the tip of the racing needle 13.

  In this state, as shown in FIG. 5E, the lacing needle 13 is retracted to hook the thread 12 on the hook at the tip, and the thread 12 is pulled out through the loop R1 to form a new loop R2. Thereafter, the racing needle 13 rotates in the direction of the arrow D and directs the hook downward.

  Then, as shown in FIG. 5F, the yarn feeding nozzle 10 and the lacing needle 13 again move downward, and pull the yarn 12 downward. As a result, the loop R <b> 2 of the yarn 12 is pulled downward below the coil end 11.

  In this state, the racing needle 13 again enters inward in the radial direction of the stator core, and thereafter, the operation from the figure (a) is repeated, whereby the yarn 12 is entangled and at the same time, the racing operation position is determined. By rotating the stator core, the yarn 12 can be entangled so as to wrap the entire coil end 11 in a mesh shape.

  In addition, after binding the whole coil end 11, operation which binds the thread | yarn 12 is performed, This operation is performed by the method etc. which were described in the said patent document 1. FIG.

Japanese Patent No. 2717434 Japanese Patent No. 3927669

  However, in the racing devices described in Patent Documents 1 and 2, after the racing operation is performed on the coil end by the above method, the yarn binding operation for binding the yarn by the same device is subsequently performed. In the operation of binding the yarn, after the lacing operation is finished, a knot is formed in the yarn, and the knot is squeezed with a pusher and moved to the coil side to bind.

  As described above, since the lacing operation and the yarn bundling operation are continuously performed by the same device, it takes a long time to process one stator core by the device, and there is a problem that productivity cannot be increased.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a stator coil lacing and binding method and apparatus capable of improving productivity.

In order to achieve the above object, one of the present invention is a method for lacing and binding a stator coil in which a coil end protruding from an end surface of a stator core is bound with a thread.
Move the stator core sequentially to the racing station, thread binding station and take-out station,
In the racing station, a hook for hooking a thread is provided at the tip, the lace needle that moves in the radial direction and the axial direction of the stator core and rotates itself, and the yarn is fed out from the tip, in the axial direction of the stator core. While cooperating with the yarn feeding nozzle that moves and rotates, the stator core is rotated, and after tying and tying the yarn so as to wrap around the coil end, finally a knot is formed,
Stator coil racing characterized in that, at the yarn binding station, the end portion of the yarn extended from the knot is pulled and clamped by suction, and the knot is squeezed and moved toward the coil by a pusher device. A bundling method is provided.

Another aspect of the present invention is a conveying means for supporting a stator core and sequentially moving it to a racing station, a thread binding station, and a take-out station;
A racing device disposed at the racing station;
A bundling device disposed at the yarn binding station,
The lacing device is provided with a hook that hooks a thread at the tip, moves in the radial direction and axial direction of the stator core, and rotates itself, and feeds the thread from the tip, in the axial direction of the stator core. A yarn feeding nozzle that moves and rotates, and a rotation support means that rotates to support the stator core and determine the racing operation position;
The binding device has a suction clamp device that pulls and clamps the end of the yarn by suction, and a pusher device that squeezes the knot of the yarn pulled out by the suction clamp device and binds it while moving it toward the coil side. And
While the stator core is rotated by the rotation support means by the lacing device, the lacing needle and the yarn supply nozzle cooperate with each other to entangle and bind the yarn so as to wrap around the coil end of the stator core, and finally the knot Form the
The bundling device is configured to pull and clamp the end of the yarn extended from the knot by the suction clamp device, and to squeeze the knot by the pusher device and to bind it while moving to the coil side. A stator coil lacing and binding device is provided.

  In the lacing and binding device according to the present invention, the lacing device includes the lacing needle, the yarn feeding nozzle, the rotation support means, a clamp cutter that draws and clamps the yarn, and cuts the yarn, and the yarn at the lacing operation position. It is preferable to have a hook rod that pulls and a yarn knot guide rod that moves forward and backward toward the operating position when forming the knot of the yarn and makes it easier to form a knot by pressing the yarn.

  Further, in the binding device, the suction clamp device includes a suction tube disposed so that the suction port can be advanced and retracted toward a yarn knot, and a clamp disposed in a suction path of the suction tube, and the pusher The apparatus has a swing plate having a slit for introducing a thread at the tip, and the swing plate is advanced and retracted in a direction crossing the thread that has been pulled out and clamped by the suction clamp device. Introducing into the slit and swinging in a direction crossing the yarn, approaching the coil side of the stator core, driving means to squeeze the knot and bind the end of the yarn extending from the knot to a predetermined length It is preferable to have a cutter.

  According to the present invention, in the racing station, the lacing needle and the yarn feeding nozzle cooperate to rotate the stator core and entangle and bind the yarn so as to wrap around the coil end, and finally form a knot. In the yarn binding station, the end portion of the yarn extended from the knot is pulled and clamped by suction, and the knot is squeezed by a pusher device and is moved to the coil side to be bound, thereby performing a racing operation and binding. Operations can be performed in parallel at different stations, and productivity can be increased.

  Also, by separating the racing station and the thread binding station as described above, when the knot is finally formed at the racing station and moved to the next thread binding station, the end of the thread extended from the knot However, in the present invention, the end portion of the yarn extended from the knot is a difficult problem. This problem was solved by pulling out and clamping by suction and squeezing the knot with a pusher device and moving it to the coil side, and the yarn end could be securely held and bound.

It is a top view which shows one Embodiment of the lacing and binding apparatus of the stator coil by this invention. It is a side view which shows the principal part of the racing apparatus in the same apparatus. It is a top view which shows the principal part of the racing apparatus in the same apparatus. It is a top view which shows the whole racing apparatus in the same apparatus. It is a top view of the binding apparatus in the apparatus. The suction clamp apparatus of the bundling device in the apparatus is shown, (a) is a plan view showing the main part, (b) is an explanatory view showing the clamp part. It is a side view which shows the pusher apparatus of the bundling device in the apparatus. It is a front view of the binding apparatus in the same apparatus. The 1st process of the sewing start in a racing station is shown, (a) is a side view, (b) is a top view. The 2nd process of the sewing start in a racing station is shown, (a) is a side view, (b) is a top view. The 3rd process of the sewing start in a racing station is shown, (a) is a side view, (b) is a top view. The 4th process of the sewing start in a racing station is shown, (a) is a side view, (b) is a top view. It is a side view which shows the 1st process of the sewing end (knot formation) in a racing station. It is a side view which shows the 2nd process of the sewing end (knot formation) in a racing station. It is a side view which shows the 3rd process of the sewing end (knot formation) in a racing station. It is a side view which shows the 4th process of the sewing end (knot formation) in a racing station. It is a side view which shows the 5th process of the sewing end (knot formation) in a racing station. It is a side view which shows the 6th process of the sewing end (knot formation) in a racing station. It is a side view which shows the 7th process of the sewing end (knot formation) in a racing station. It is a side view which shows the 8th process of the sewing end (knot formation) in a racing station. It is a side view which shows the 1st process in a yarn binding station. It is a side view which shows the 2nd process in a yarn binding station. It is a side view which shows the 3rd process in a yarn binding station. It is a side view which shows the 4th process in a yarn binding station. It is a side view which shows the 5th process in a yarn binding station. It is a side view which shows the 6th process in a yarn binding station. It is a side view which shows the 7th process in a yarn binding station. It is explanatory drawing which shows the basic structure of a racing apparatus, and a racing procedure.

  Hereinafter, an embodiment of a stator coil racing and binding apparatus according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the lacing and binding apparatus 20 includes a turntable 21 that moves while holding the stator core S. On the moving path of the stator core S by the rotation of the turntable 21, the racing station LS, the yarn Three stations, a binding station BS and an extraction station TS, are provided. A racing device 22 is installed at the racing station LS, and a bundling device 23 is installed at the yarn binding station BS. The take-out station TS is a station for removing the stator core S from which the racing and bundling operation has been completed and mounting a new stator core S.

  Therefore, first, the racing device 22 disposed in the racing station LS will be described with reference to FIGS.

  As shown in FIG. 1, when the stator core S is disposed at the racing station LS, the stator core S is rotatably supported by the rotation support means 84 so as to determine the racing operation position. The racing device 22 has a racing device main body 24.

  As shown in FIGS. 2 and 3, the racing apparatus main body 24 includes an upper drive unit 25 that operates the coil end 11 protruding from the upper end surface of the stator core S and a coil end 11 protruding from the lower end surface of the stator core S. A lower drive unit 26 is provided for operation. Since the upper drive unit 25 and the lower drive unit 26 have substantially the same structure, in the following description, the same parts are denoted by the same reference numerals and described as a common structure.

  Each of the upper drive unit 25 and the lower drive unit 26 has a swing plate 28 supported so as to be swingable in the vertical direction by a support shaft 27 attached to a frame (not shown). The racing device 22 includes a base 30 and a table 29 supported on the base 30 via a post (not shown). A first servo motor 31 is attached to the lower surface of the base 30 and the upper surface of the table 29, and a ball screw 32 is connected to the drive shaft of each first servo motor 31. The ball screw 32 is screwed into the slide block 33, and when the ball screw 32 is rotated by the first servo motor 31, the slide block 33 moves up and down. The slide block 33 is pivotally attached to the swing plate 28. When the slide block 33 moves up and down, the swing plate 28 swings up and down. The operation of the upper and lower swing plates 28 is performed symmetrically, for example, when the upper swing plate 28 swings downward, the lower swing plate 28 swings upward. It has become.

  Each swing plate 28 supports a yarn feeding nozzle support shaft 34 and a racing needle support shaft 35 via a support plate pivotally attached to the swing plate 28. An extension shaft 36 extends from the tip side of the yarn feeding nozzle support shaft 34, and the yarn feeding nozzle 10 is attached to the tip of the extension shaft 36 at an angle of approximately 90 degrees with respect to the extension shaft 36. It has been. The yarn supplying nozzle 10 supported by the extension shaft 36 of the upper yarn supplying nozzle support shaft 34 extends downward, and the yarn supplying nozzle 10 supported by the extension shaft 36 of the lower yarn supplying nozzle support shaft 34 extends upward. These are arranged close to the corresponding coil ends 11 respectively. Moreover, the front-end | tip part of the yarn feeding nozzle 10 is bent in J shape so that the front-end | tip of the racing needle 13 mentioned later may be opposed. Further, a swing arm 37 is attached to the base side of the yarn supply nozzle spindle 34, and driving means (not shown) is connected to the swing arm 37, and the yarn supply is performed by swinging the swing arm 37. The nozzle support shaft 34 and the extension shaft 36 are configured to rotate.

  Therefore, the yarn feeding nozzle 10 moves up and down by the swinging motion of the swinging plate 28 and swings in the left-right direction by the rotational motion of the yarn feeding nozzle support shaft 34 and the extension shaft 36.

  On the other hand, the racing needle support shaft 35 is supported so as to be axially slidable and rotatable via a support plate pivotally attached to the swing plate 28. The racing needle 13 is attached to the tip of the racing needle support shaft 35. As shown in FIG. 9, a hook-like hook 13 a is formed at the tip of the racing needle 13. A spline 38 is formed at the base end portion of the racing needle support shaft 35, and a driven pulley 39 is attached to the spline 38. The racing needle support shaft 35 is slidable in the axial direction with respect to the driven pulley 39 and is inserted so as to be integrated in the rotation direction. A second servo motor 40 is mounted via a support plate pivotally attached to the swing plate 28. A drive pulley 41 is attached to the drive shaft of the second servo motor 40, and the drive pulley 41 and the driven pulley. 39, a timing belt 42 is stretched. Therefore, the operation of the second servo motor 40 causes the driven pulley 39 to rotate via the drive pulley 41 and the timing belt 42, thereby rotating the racing needle support shaft 35 and the racing needle 13 connected to the tip thereof. It is like that.

  Further, a front / rear moving holder 43 is attached to the intermediate portion of the racing needle support shaft 35 in a state in which the axial movement is restricted with respect to the racing needle support shaft 35 and the rotation is possible. As shown in FIG. 4, the front and rear movement holder 43 is pivotally attached to the distal end of a telescopic arm 45 of a needle front / rear drive unit 44 installed in a device frame (not shown). The needle front / rear drive unit 44 rotates as indicated by the arrows in FIG. 3, whereby the telescopic arm 45 rotates, and the front / rear moving holder 43 moves in the axial direction of the racing needle support shaft 35. As a result, the racing needle support shaft 35 and the racing needle 13 connected thereto move in the axial direction together with the forward / backward movement holder 43.

  Accordingly, the racing needle 13 moves up and down together with the yarn feeding nozzle 10 by the swinging motion of the swinging plate 28, rotates by the operation of the second servo motor 40, and operates the needle front / rear drive unit 44. Is moved in the axial direction.

  As shown in FIG. 4, the racing device 22 includes a clamp and cutter device 46, a pulling device 49, a yarn knot guide device 52, and a clamp device 55 in addition to the racing device body 24. These devices are arranged with their respective tip portions facing the racing operation position.

  The clamp and cutter device 46 has a clamp cutter 48 that moves forward and backward in the axial direction by a cylinder 47 provided at the rear end. The clamp cutter 48 has a structure in which the thread 12 is pulled and clamped and cut.

  The pulling device 49 has a hook bar 51 that moves forward and backward in the axial direction by a cylinder 50 attached to the rear end, and moves up and down by a drive mechanism (not shown). As shown in FIGS. 9 and 11, the hook bar 51 is formed with a hook portion at the tip so that the thread 12 can be hooked and pulled.

  The yarn knot guide device 52 has a yarn knot guide rod 54 that moves forward and backward in the axial direction by a cylinder 53 attached to the rear end. As shown in FIG. 14, the yarn knot guide rod 54 serves as a guide for pressing the yarn 12 during yarn knotting.

  The clamp device 55 has a clamp 58 that moves forward and backward in the axial direction by a first cylinder 56 attached to the rear end. The clamp 58 is opened and closed by a second cylinder 57 attached to an intermediate portion of the clamp device 55.

  Next, the bundling device 23 arranged at the yarn binding station BS will be described with reference to FIGS.

  As shown in FIGS. 7 and 8, the bundling device 23 includes a base 60 and a table 70 supported on the base 60 via a support column 69. The upper surface of the base 60, the table 70 A suction clamp device 61 and a pusher device 62 are respectively installed on the lower surface of the. The suction clamp device 61 and the pusher device 62 respectively disposed on the upper surface of the base 60 and the lower surface of the table 70 are a coil end 11 protruding from the upper end surface of the stator core S and a coil end 11 protruding from the lower end surface of the stator core S. Are basically the same structure, and in the following description, the same reference numerals are given and description will be made as a common structure.

  As shown in FIGS. 5, 6, and 8, the suction clamp device 61 is installed on the base 60 and the table 70 through the guide rail 63 installed in the horizontal direction via 83, and installed on the rear end of the guide rail 63. A slide base 64 moved along the guide rail 63 by the drive device 82, a suction device 66 attached to the slide base 64, a suction pipe 65 extended from the suction device 66, and a flow path of the suction pipe 65 And a clamp 67 disposed in the middle. As the slide base 64 moves along the guide rail 63, the suction pipe 65 moves forward and backward toward the stator core S. The clamp 67 is opened and closed by an air cylinder 68.

  As shown in FIGS. 5, 7, and 8, the pusher device 62 is a slide device that is horizontally installed on a base 60 and a table 70 via a support plate 71 in a direction substantially perpendicular to the guide rail 63. 72. A slide base 73 is supported on the slide device 72 so as to be horizontally movable, and an elevation base 75 is supported on the slide device 72 via an air cylinder 74 so as to be movable up and down. Further, a support plate 78 slidably operated by an air cylinder 77 is attached to the elevating base 75 via a guide rod 76 disposed in a direction orthogonal to the slide device 72. A swing plate 79 is extended. A slit 80 for introducing the yarn 12 is formed at the tip of the swing plate 79.

  The swing plate 79 is moved in the X direction in FIGS. 5, 7, and 8 by the operation of the slide device 72 (see FIG. 7), and is moved in the Y direction by the operation of the air cylinder 77. By the operation of 74, it can move in the Z direction. The rocking plate 79 moves in the X direction so that the thread 12 is introduced into the slit 80, and reciprocates in the Z direction while moving in the Y direction, thereby narrowing and binding the knot 81 of the thread 12. Can be done. In addition, a thread cutter (not shown) constituted by a heater or the like is attached to a portion adjacent to the swing plate 79 of the pusher device 62.

  Next, an embodiment of a stator coil lacing method according to the present invention using this lacing device 20 will be described. In the following description, for convenience, the operation on the coil end 11 protruding from the upper end surface of the stator core S by the upper drive unit 25 will be described. At the same time, the operation on the coil end 11 protruding from the lower end surface of the stator core S is also described. A similar operation is performed by the lower drive unit 26. However, the vertical movement of the yarn feeding nozzle 10 and the racing needle 13 is performed vertically symmetrically in the upper drive unit 25 and the lower drive unit 26.

  The stator core S on which the coil is mounted is placed on the turntable 21 at the take-out station TS in FIG. 1, and is placed at the racing station LS as the turntable 21 rotates. As described above, the racing device 22 is installed in the racing station LS.

  As shown in FIG. 9, when starting the racing operation, the yarn 12 fed from the yarn feeding nozzle 10 is held by the clamp and cutter device 46. At this time, the hook 13 a of the racing needle 13 is positioned above the stator core S and stands by at a position away from the yarn 12. Further, a hook bar 51 is disposed below and on the side of the path of the yarn 12.

  Next, as shown in FIG. 10, the hook bar 51 moves forward in the axial direction, the swinging plate 28 swings, the yarn feeding nozzle 10 and the racing needle 13 are lowered, and the tip of the yarn feeding nozzle 10 is It enters the stator core S and is located below the coil end 11. As a result, the yarn 12 held between the yarn supplying nozzle 10 and the clamp / cutter device 46 is in contact with the hook bar 51 in the middle, and the portion fed out from the yarn supplying nozzle 10 is the inside of the coil end 11. It is stretched downward through the circumference. The tip of the racing needle 13 is disposed so as to face the gap between the lower portion of the coil end 11 and the upper end surface of the stator core S.

  Next, as shown in FIG. 11, the hook bar 51 is lowered and retracted in the axial direction, and the thread 12 is hooked and pulled by a predetermined distance. As a result, the yarn 12 extends vertically and contacts the outer peripheral side of the coil end 11.

  In this state, as shown in FIG. 12, the racing needle 13 is pushed out in the axial direction, passes below the coil end 11, hooks the thread 12 on the hook 13a at the tip, and then moves back in the axial direction again. At this time, in order to make it easy for the thread 12 to be caught on the hook 13a, the racing needle 13 performs an appropriate rotation operation, and the racing needle support shaft 35 and the extension shaft 36 rotate to engage the thread 12 with the hook 13a. As described above, the tip of the yarn feeding nozzle 10 is swung. The yarn 12 hooked on the hook 13a passes through the lower part of the coil end 11 and is pulled out to the outer peripheral side.

  This state corresponds to the state shown in FIG. In the same manner as the operation shown in FIG. 28, the stator core S is moved by the rotation support means 84 (see FIG. 1) while the yarn 12 is entangled with the coil end 11 by the cooperative operation of the yarn supplying nozzle 10 and the racing needle 13. The yarn 12 is entangled so that the entire coil end 11 is wrapped in a mesh shape.

  When the stator core S is made to make one turn in this manner, the entire circumference of the coil end 11 is wrapped with the yarn 12, so that a knot is finally formed. At this time, as shown in FIG. 13, the yarn feeding nozzle 10 and the lacing needle 13 are arranged above the coil end 11, and the yarn 12 is passed through the first loop 12a below to the outer periphery by the hook 13a of the lacing needle 13. The second loop 12b is formed by being pulled out.

  In this state, as shown in FIG. 14, the yarn knot guide rod 54 moves forward and is disposed above the yarn 12 on the base side of the second loop 12b.

  Next, as shown in FIG. 15, the lacing needle 13 is advanced through the second loop 12b, and the yarn 12 inserted from the yarn supplying nozzle 10 is hooked on the hook 13a at the tip. At this time, the yarn knot guide rod 54 is positioned below the racing needle 13 to prevent the yarn 12 from floating, and the hook 13a can reliably hook the yarn 12.

  Next, as shown in FIG. 16, the racing needle 13 is retracted again, and the thread 12 hooked on the hook 13a is pulled out from the second loop 12b to form a third loop 12c.

  Next, as shown in FIG. 17, the yarn feeding nozzle 10 and the racing needle 13 are raised, and the second loop 12 b is narrowed to form a knot 81.

  Next, as shown in FIG. 18, the clamp 58 of the clamp device 55 moves forward to clamp the yarn 12 of the third loop 12 c. At the same time, the clamp cutter 48 moves forward to catch the yarn 12 inserted from the yarn supply nozzle 10.

  Next, as shown in FIG. 19, the clamp cutter 48 is moved backward to draw the yarn 12 and is clamped and cut. As a result, the yarn 12 inserted from the yarn feeding nozzle 10 is held by the clamp cutter 48 and an end portion 12d of the cut yarn 12 is formed.

  When the clamp 58 is retracted in this state, the third loop 12c is pulled by the clamp 58, and the end 12d is pulled out through the second loop 12b, resulting in the state shown in FIG. That is, the knot 81 is formed after the racing operation, and the end 12 d extends from the knot 81. The knot 81 is not yet fully drawn and is in a loose state. This completes the racing operation at the racing station LS.

  Next, the turntable 21 in FIG. 1 is rotated, and the stator core S is disposed at the yarn binding station BS. A binding device 23 is installed in the yarn binding station BS, and a yarn binding operation is performed here. In addition, since the new stator core S installed in the take-out station TS is disposed in the racing station LS and the racing operation is performed on the new stator core S, the two stator cores S are operated simultaneously. become.

  FIG. 21 shows a state in which the stator core S that has finished the racing operation is arranged at the yarn binding station BS. An end portion 12d of the yarn 12 tied to wrap around the coil end 11 extends from the knot 81 in a still loose state. A suction pipe 65 of the suction clamp device 61 is disposed on the side of the knot 81.

  In this state, as shown in FIG. 22, the suction pipe 65 advances toward the knot 81 while sucking air, and sucks the yarn 12. Whether or not the thread 12 has been sucked is confirmed by a sensor (not shown) or the like, and the suction pipe 65 repeats forward and backward while sucking until the thread 12 is sucked.

  When it is confirmed that the thread 12 has been sucked into the suction pipe 65, the suction pipe 65 is retracted, the air cylinder 68 is actuated, the clamp 67 is closed, and the thread 12 is gripped, as shown in FIG.

  Next, as shown in FIG. 24, the pusher device 62 advances from the direction intersecting the yarn 12 toward the yarn 12 drawn from the knot 81, and the yarn 12 is introduced into the slit 80 of the swing plate 79. The Further, the pusher device 62 moves toward the knot 81 as indicated by the arrow in FIG.

  Next, as shown in FIG. 25, the pusher device 62 repeats the vertical movement a plurality of times, preferably a few times, and pulls the yarn 12 to squeeze the knot 81 and move it toward the coil end 11 for binding.

  Next, as shown in FIG. 26, the yarn 12 is cut by a yarn cutter (not shown) that is configured by a heater or the like attached to the pusher device 62.

  Finally, as shown in FIG. 27, the clamp 67 is opened by the operation of the air cylinder 68, and the residue of the yarn 12 is sucked through the suction pipe 65 and collected in a yarn residue container (not shown).

  When the bundling operation of the knot 81 of the yarn 12 is thus completed, the turntable 21 in FIG. 1 is rotated, and the stator core S that has finished the racing bundling operation is disposed at the take-out station TS. Here, the stator core S that has finished the racing binding operation is taken out, and a new stator core S is installed and sent out to the racing station LS.

  As described above, according to the present invention, a racing operation is performed on one stator core S at the racing station LS, and at the same time, a knot binding at another stator core S is performed at the yarn binding station BS. Since operation can be performed, workability | operativity can be improved. Further, after the formation up to the knot 81 at the racing station LS, when moving to the yarn binding station BS, the end portion 12d of the yarn 12 is once opened. Since the end portion 12d of the knot 81 is gripped by the clamp 67, the knot 81 can be smoothly bundled.

DESCRIPTION OF SYMBOLS 10 Yarn feeding nozzle 11 Coil end 12 Yarn 12a 1st loop 12b 2nd loop 12c 3rd loop 12d End part 13 Racing needle 13a Hook 20 Racing binding apparatus 21 Turntable 22 Racing apparatus 23 Binding apparatus 24 Racing apparatus main body 25 Upper drive part 26 Lower drive portion 27 Support shaft 28 Oscillating plate 29 Table 30 Base 31 Servo motor 32 Ball screw 33 Slide block 34 Yarn supply nozzle support shaft 35 Racing needle support shaft 36 Extension shaft 37 Swing arm 38 Spline 39 Driven pulley 40 Servo motor 41 Driving pulley 42 Timing belt 43 Front / rear moving holder 44 Needle front / rear drive unit 45 Telescopic arm 46 Clamp and cutter device 47 Cylinder 48 Clamp cutter 49 Pulling device 50 Cylinder 51 Hook bar 52 Id device 53 Cylinder 54 Guide rod 55 Clamp device 56 Cylinder 57 Cylinder 58 Clamp 60 Base 61 Suction clamp device 62 Pusher device 63 Guide rail 64 Slide base 65 Suction tube 66 Suction device 67 Clamp 68 Air cylinder 69 Strut 70 Table 71 Support plate 72 Slide device 73 Slide base 74 Air cylinder 75 Elevating base 76 Guide rod 77 Air cylinder 78 Support plate 79 Oscillating plate 80 Slit 81 Knot 82 Drive device 84 Rotation support means (
BS Yarn Tying Station LS Racing Station S Stator Core TS Extraction Station

Claims (4)

In the stator coil lacing method for binding the coil end protruding from the end face of the stator core with a thread,
Move the stator core sequentially to the racing station, thread binding station and take-out station,
In the racing station, a hook for hooking a thread is provided at the tip, the lace needle that moves in the radial direction and the axial direction of the stator core and rotates itself, and the yarn is fed out from the tip, in the axial direction of the stator core. While cooperating with the yarn feeding nozzle that moves and rotates, the stator core is rotated, and after tying and tying the yarn so as to wrap around the coil end, finally a knot is formed,
Stator coil racing characterized in that, at the yarn binding station, the end portion of the yarn extended from the knot is pulled and clamped by suction, and the knot is squeezed and moved toward the coil by a pusher device. Bonding method. Conveying means for supporting the stator core and sequentially moving to the racing station, the yarn binding station and the take-out station;
A racing device disposed at the racing station;
A bundling device disposed at the yarn binding station,
The lacing device is provided with a hook that hooks a thread at the tip, moves in the radial direction and axial direction of the stator core, and rotates itself, and feeds the thread from the tip, in the axial direction of the stator core. A yarn feeding nozzle that moves and rotates, and a rotation support means that rotates to support the stator core and determine the racing operation position;
The binding device has a suction clamp device that pulls and clamps the end of the yarn by suction, and a pusher device that squeezes the knot of the yarn pulled out by the suction clamp device and binds it while moving it toward the coil side. And
While the stator core is rotated by the rotation support means by the lacing device, the lacing needle and the yarn supply nozzle cooperate with each other to entangle and bind the yarn so as to wrap around the coil end of the stator core, and finally the knot Form the
The bundling device is configured to pull and clamp the end of the yarn extended from the knot by the suction clamp device, and to squeeze the knot by the pusher device and to bind it while moving to the coil side. A stator coil lacing and binding apparatus characterized by the above.   The racing device includes the racing needle, the yarn feeding nozzle, the rotation support means, a clamp cutter that pulls and clamps the yarn, a hook rod that draws the yarn to the racing operation position, and a yarn knot. The lacing and binding device for a stator coil according to claim 2, further comprising a yarn knot guide rod that moves forward and backward toward the operation position when forming and makes it easy to form a knot by pressing the yarn.   In the binding device, the suction clamp device includes a suction tube arranged so that the suction port can be advanced and retracted toward a knot of the yarn, and a clamp arranged in a suction path of the suction tube, and the pusher device is A swing plate having a slit for introducing a thread into the tip, and the swing plate is moved forward and backward in a direction intersecting the thread that has been pulled out and clamped by the suction clamp device. And a driving means for squeezing the knot to bring it closer to the coil side of the stator core while swinging in a direction intersecting the yarn, and a cutter for cutting the end of the yarn extending from the knot to a predetermined length The lacing and binding device for stator coils according to claim 2, wherein: