JP2013055228A - Winding device and winding method of air-core coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding deice of an air-core coil capable of efficiently manufacturing the air-core coil, and a winding method.SOLUTION: A winding device 1 comprises: a winding core 36 around which a wire material 30 becoming a coil through its rotation is wound; a fixed side winding jig 32 rotatable with the winding core 36 and determining a winding wire start position in a winding wire region CA where the wire material 30 is wound; and a guide nozzle 82 for guiding the wire material 30 to the winding wire region CA. An arrangement position of the guide nozzle 82 in the winding wire is a position where a tip 82c of the guide nozzle 82 is closer to the winding core 36 than an outer peripheral edge 32e of the fixed side winding jig 32.

Description

  The present invention relates to an air core coil winding apparatus and a winding method for manufacturing an air core coil by winding a wire around a winding core.

  An air-core (bobbinless) coil is a coil in which a wire is wound into a cylindrical shape or the like, and nothing is put in the center thereof. Conventionally, an air core coil is manufactured by a dedicated winding device, and this winding device generally winds a wire supplied from a guide nozzle around a winding core between two winding jigs. (See, for example, Patent Document 1).

  In the conventional winding device, first, the starting end portion of the wire supplied from the guide nozzle is clamped and fixed by a pressing member provided on a fixed-side spindle. Thereafter, the guide nozzle is moved toward the winding jig, and the wire is guided to the winding core between the two winding jigs through the notch formed in the fixed-side winding jig. Thereby, since the starting end part of the wire is positioned by the notch, the wire supplied from the guide nozzle is sequentially wound around the outer periphery of the core by rotating the core together with the winding jig. During the winding, the guide nozzle reciprocates in the axial direction of the core in order to guide the wire to an appropriate position.

  After the winding is completed and the desired coil is formed, the guide nozzle is moved again toward the holding member to cut the terminal end of the wire, and the starting end of the formed coil is opened to create a new starting end. The part is fixed by a pressing member. Then, the movable winding jig is separated from the fixed winding jig, and the formed coil is removed from the core.

Japanese Patent Laid-Open No. 10-304628

  However, in the conventional winding device, the guide nozzle is moved in the axial direction, and the leading end or the terminal end of the wire is fixed or cut by hooking on the notch of the winding jig or the notch of the flange provided on the spindle. Therefore, the guide nozzle is disposed so as to reciprocate in the axial direction at a position away from these members so as not to come into contact with the winding jig or the flange.

  As a result, even during winding, the guide nozzle is at a position away from the winding core in the centrifugal direction, and depending on the wire diameter of the wire and the rotation speed of the winding core, the wire rod may be greatly shaken between the guide nozzle and the winding core ( (Vibration) occurs, and winding disturbance may occur. In recent years, with the miniaturization and high performance of various devices that use air-core coils, the demand for higher quality coils with thinner wire diameters has increased. Therefore, it is difficult to stabilize the quality while reducing the rotation speed of the winding core, and it is difficult to improve productivity.

  In view of such circumstances, the present invention is intended to provide a winding device and a winding method for an air core coil that can efficiently manufacture the air core coil.

  (1) The present invention provides a winding core in which a wire that is a coil is wound by rotating itself, and a winding start in a winding area that is rotatably provided together with the winding core and around which the wire is wound. A winding jig for determining the position, and a guide nozzle for guiding the wire rod to the winding region, and the guide nozzle is arranged in the winding at the tip of the guide nozzle at the outer periphery of the winding jig. An air core coil winding device, wherein the winding device is located closer to the winding core than an end.

  (2) The present invention is also characterized in that the position of the guide nozzle in the winding is a position where the wire extends in a direction having an angle with respect to the axial direction of the guide nozzle. The winding device according to (1).

  (3) In the present invention, the arrangement position in the winding of the guide nozzle is a case where the winding start point is a point where the wire first contacts the outer peripheral surface of the core when starting the winding. Further, the wire rod is in a position in contact with the winding start point in a state of extending in a direction that forms an angle of 10 to 60 ° with respect to the axial direction of the guide nozzle. Or it is the winding apparatus of the air-core coil as described in (2).

  (4) The air-core coil according to (2) or (3), wherein the guide nozzle includes a contact portion that contacts and bends the wire extending from the guide nozzle. Winding device.

  (5) The present invention is also the winding device for an air-core coil according to (4), wherein the contact portion is rounded on a surface that contacts the wire.

  (6) The present invention also performs winding by bringing the tip of the guide nozzle that guides the wire wound around the winding core closer to the winding core than the outer peripheral end of the winding jig that determines the winding start position. This is a method of winding an air-core coil.

  According to the air core coil winding device and the winding method of the present invention, it is possible to achieve an excellent effect that the air core coil can be efficiently manufactured.

It is the schematic which showed the structure of the winding apparatus which concerns on embodiment of this invention. (A) And (b) It is the figure which showed the structure of the periphery of a fixed side winding jig and a movable side winding jig. (A) It is an expanded sectional view of the 1st clamp. (B)-(d) It is sectional drawing of a guide nozzle. It is the figure which showed operation | movement of (a) and (b) drive mechanism. (A)-(c) It is the figure which showed until it sets a wire to the winding start state. It is the figure which showed until (a) and (b) setting a wire to the winding start state. (A) It is the figure which showed the positional relationship in the winding start state. (B) It is the figure which showed the state in winding. (A)-(c) It is the figure which showed until a termination | terminus part was cut | disconnected after completion | finish of winding. (A) And (b) It is the figure which showed until it takes out a coil from a core and hold | maintains it with a conveying apparatus. (A)-(c) It is the figure which showed until it takes out a coil from a winding core, and makes it hold | maintain on a conveying apparatus. (A) It is the figure which looked at the conveying apparatus of the state holding the coil from the top. (B) And (c) It is the figure which showed the procedure in the case of dropping a coil from a winding core, and carrying out.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  First, the configuration of an air core coil winding device 1 (hereinafter simply referred to as a winding device 1) according to the present embodiment will be described with reference to FIGS. In the following description, the axial direction and the centrifugal direction (or the centripetal direction), unless otherwise specified, indicate the axial direction and the centrifugal direction (or the centripetal direction) of the rotation center axis C of the winding.

  FIG. 1 is a schematic diagram showing the configuration of the winding device 1. In the figure, for easy understanding, the description of each component is simplified and the description of some components is omitted. As shown in FIG. 1, the winding device 1 includes a frame 10, a rotating fixed spindle 20 and a movable spindle 22, and a motor 24 that rotationally drives the spindles 20 and 22. .

  The frame 10 supports each member constituting the winding device 1. In this embodiment, the frame 10 is configured such that the fixed spindle 20 and the movable spindle 22 are arranged vertically, and the fixed spindle 20 is arranged below the movable spindle 22. In other words, in the present embodiment, the rotation center axis C of the winding is in a substantially vertical direction, and in this way, the press can be performed without changing the orientation (posture) of the coil that has been wound. It enables smooth conveyance to the next process such as molding.

  The fixed-side spindle 20 is rotatably supported by a bearing (not shown), and is disposed on the frame 10 with its tip directed toward the movable-side spindle 22 (downward). The movable spindle 22 is rotatably supported by a bearing (not shown), and is disposed on the frame 10 with its tip directed toward the fixed spindle 20 (upward).

  The movable spindle 22 is rotationally driven by a motor 24 via a transmission mechanism 26. The transmission mechanism 26 includes a rotation shaft 26a disposed in parallel with the spindles 20 and 22, a belt transmission mechanism 26b that transmits the rotational power of the motor 24 to the rotational shaft 26a, and the rotational power of the rotational shaft 26a. And a belt transmission mechanism 26 c that transmits to the belt 22. The movable spindle 22 is also driven by a moving mechanism 28 including a motor, a ball screw transmission mechanism, and the like, and can move so as to approach or separate from the fixed spindle 20 in the axial direction.

  The winding device 1 also includes a fixed-side winding jig 34 that determines the winding start position of the wire 30, a movable-side winding jig 36 that determines the winding width of the wire 30, and a core around which the wire 30 is wound. 36, a rotating member 40 attached to the fixed spindle 20, a first clamp 50 that holds the starting end of the wire 30, a second clamp 60 that holds the terminal end of the wire 30, and a fixed winding A driving mechanism 70 for driving the tool 32 and the first clamp 50, and a wire rod supply device 80 for supplying the wire rod 30 toward the winding area CA, which is an area in which the wire rod 30 is wound to form a coil. It is equipped with.

  2 (a) and 2 (b) are diagrams showing a configuration around the fixed-side winding jig 32 and the movable-side winding jig 34. FIG. 2 (a) shows the fixed-side winding jig 32 and the movable-side winding jig 34. Sectional drawing which looked at the circumference of side winding jig 34 from the front, and the figure (b) is a figure which looked at the circumference of fixed side winding jig 32 from the lower part. In FIG. 9A, the direction of the cross section is appropriately changed for easy understanding.

  The fixed-side winding jig 32 is a substantially tapered member for determining a winding start position, that is, a reference position in the winding width direction, and is attached to the distal end portion of the fixed-side spindle 20 via a fixing member 33. Yes. The fixed member 33 is disposed so as to be rotatable together with the fixed side spindle 20 and to be reciprocally movable in the axial direction with respect to the fixed side spindle 20. Accordingly, the fixed-side winding jig 32 is driven and rotated by the motor 24 together with the fixed-side spindle 20 and can reciprocate in the axial direction with respect to the fixed-side spindle 20.

  In the fixed-side winding jig 32, an insertion hole 32b through which the winding core 36 is inserted is formed in the central portion of the tip surface 32a that is a surface for determining the winding start position. In addition, a positioning groove 32c for determining the position and direction of the wire 30 at the start of winding is formed so as to be in contact with the insertion hole 32b. Further, an anti-spinning pin 32 d that suppresses the deflection of the starting end portion 30 a of the wire 30 is provided on the outer peripheral portion of the fixed-side winding jig 32 so as to project toward the movable-side winding jig 34.

  The movable-side winding jig 34 is a member for determining the winding width of the wire 30, that is, the dimension in the coil width direction (coil axial direction), and is fixed to the distal end portion of the movable-side spindle 22. Accordingly, the movable side winding jig 34 is driven and rotated by the motor 24 together with the movable side spindle 22 and is driven by the moving mechanism 28 so as to approach or separate from the fixed side winding jig 32. . The movable-side winding jig 34 has an insertion hole 34b formed at the center of the tip surface 34a, which is a surface for determining the winding width, and the tip of the core 36 is inserted into the insertion hole 34b during winding. It has become so.

  The winding core 36 is a member around which the wire 30 is wound around the outer periphery by rotating together with the fixed-side spindle 20 and the fixed-side winding jig 32. The cross-sectional shape of the winding core 36 is configured in a predetermined shape such as a circular shape or an elliptical shape. The outer periphery of the core 36 between the fixed-side winding jig 32 and the movable-side winding jig 34 becomes a winding area CA where the wire 30 is wound to form a coil. The winding core 36 is fixed to a tip end portion of an internal shaft 36a inserted through the inside of the fixed-side spindle 20 that is a hollow shaft.

  The internal shaft 36a is rotated by being driven by the motor 24 together with the stationary spindle 20 and is reciprocally moved in the axial direction with respect to the stationary spindle 20 by being driven by an actuator (not shown) such as an air cylinder. It has become. Therefore, the winding core 36 is movable in the axial direction with respect to the stationary spindle 20 together with the inner shaft 36a, and the protruding position protruding from the distal end surface 32a of the stationary side winding jig 32 and the inner side of the distal end surface 32a. It moves between the retracted positions to be retracted.

  The rotating member 40 is a member that is fixed to the fixed-side spindle 20 and rotates together with the fixed-side spindle 20, and is disposed adjacent to the proximal end side of the fixed-side winding jig 32 at the distal end portion of the fixed-side spindle 20. . The rotating member 40 includes a first arm member 42, a second arm member 44, and a third arm member 46 that protrude in the centrifugal direction.

  The first arm member 42 causes the first clamp 50 that holds the starting end portion 30a of the wire 30 at the start of winding to be outward in the centrifugal direction (outer peripheral side) with respect to the outer peripheral end 32e of the fixed-side winding jig 32. The first clamp 50 is provided at the distal end portion for disposing the first clamp 50 and the second clamp 50. Further, the second arm member 44 has a second clamp 60 that holds the terminal portion 30b of the wire 30 when the winding is completed, on the outer side in the centrifugal direction (outer peripheral side) with respect to the outer peripheral end 32e of the fixed-side winding jig 32. The second clamp 60 is provided at the tip.

  Although details will be described later, in the present embodiment, the first and second clamps 50 and 60 are arranged so as to be spaced outward in the centrifugal direction with respect to the outer peripheral end 32e of the fixed-side winding jig 32 as described above. In addition, while ensuring the length of the two lead portions (that is, the start end portion 30a and the end portion 30b) of the formed coil, the processing of the two lead portions is facilitated to improve the efficiency of the winding work. .

  In the present embodiment, the rotating member 40 is not configured in a disk shape, but the first and second arm members 42 and 44 are provided for the first and second clamps 50 and 60, respectively. The weight 40 and the moment of inertia are reduced, and the core 36 and the winding jigs 32 and 34 can be rotated at high speed.

  The third arm member 46 is for eliminating unbalance during rotation due to the provision of the first and second arm members 42 and 44. Therefore, a balance weight 48 for balancing the first and second arm members 42 and 44 is provided at the tip of the third arm member 46.

  The first arm member 42 and the second arm member 44 project from each other in a direction that forms an angle θ1. The third arm member 46 is disposed at an intermediate position on the opposite side of the first and second arm members 42 and 44. The angle θ1 formed by the first and second arm members 42 and 44 is not particularly limited, and may be set as appropriate according to the specifications of the lead portion of the coil to be manufactured. The protruding lengths of the first and second arm members 42 and 44 may be set according to the required length of the lead portion.

  The first clamp 50 is a member that sandwiches and holds the starting end portion 30 a of the wire 30 at the start of winding, and is provided at the distal end portion of the first arm member 42. A swing member 43 is disposed on the opposite side of the first arm member 42 to the winding area CA, and the swing member 43 is a swing provided at the proximal end of the first arm member 42. It is fixed to the first arm member 42 through a pin 43a so as to be swingable. Further, a spring 43b is disposed between the first arm member 42 and the swinging member 43, and the first arm member 42 and the swinging member 43 are always biased in a direction away from each other by the spring 43b. Has been. Further, as will be described in detail later, the driving device 70 is configured to press the swing member 43 toward the first arm member 42 against the biasing force of the spring 43b.

  The first clamp 50 is provided at the distal end portion of the swing member 43 and is provided at the distal end portion of the movable member 52 that moves as the swing member 43 swings and the first arm member 42. It is composed of a facing member 54 facing the movable member 52 and a plurality of holding grooves 56 formed in the facing member 54. The movable member 52 is moved closer to and away from the opposing member 54 as the swinging member 43 swings. That is, the movable member 52 and the opposing member 54 constitute a clamp portion that holds the start end portion 30a therebetween. In addition, the holding groove 56 defines a holding position of the start end portion 30a with respect to the core 36 by inserting the start end portion 30a.

  As shown in FIG. 2B, the movable member 52 and the opposing member 54 are configured in a substantially arc shape extending from the distal end portion of the first arm member 42 to both sides along the rotational direction. . The holding grooves 56 are formed at a plurality of locations (13 locations in the present embodiment) along the rotation direction. That is, the first clamp 50 of the present embodiment is configured to be able to hold the start end portion 30a at a plurality of locations along the rotation direction, and corresponds to a change in the shape of the core 36 and a change in the specifications of the lead portion. Thus, the holding position of the start end portion 30a can be changed.

  FIG. 3A is an enlarged cross-sectional view of the first clamp 50. An inner convex wall 52 b that protrudes toward the facing member 54 is provided on the facing surface 52 a that faces the facing member 54 in the movable member 52. Further, on the facing surface 54a of the facing member 54 that faces the movable member 52, an outer protruding wall 54b that protrudes toward the movable member 52 is provided on the outer side in the centrifugal direction with respect to the inner protruding wall 52b. Therefore, the starting end portion 30a sandwiched between the movable member 52 and the opposing member 54 is specifically sandwiched between the inner projecting wall 52b and the outer projecting wall 54b.

Thus, by sandwiching the start end 30a between the two projecting walls 52b and 54b arranged along the centrifugal direction, the start end 30a is appropriately bent and securely sandwiched,
Even when the centrifugal force CF acts, it is possible to make it difficult for the starting end portion 30a to come out between the movable member 52 and the opposing member 54. In addition, although illustration is abbreviate | omitted, it cannot be overemphasized that the inner side protrusion wall 52b and the outer side protrusion wall 54b are extended in the substantially circular arc shape along the rotation direction, respectively.

  The opposing member 54 includes a protruding portion 54c that protrudes toward the winding area CA. The holding groove 56 is continuously formed from the outer end surface in the centrifugal direction of the facing member 54 to the end surface on the winding area CA side. More specifically, the holding groove 56 includes an axial portion 56a formed along the axial direction from the outer protruding wall 54b to the tip of the protruding portion 54c on the distal end side in the centrifugal direction of the facing member 54, and the tip of the protruding portion 54c. That is, it is comprised from the centrifugal direction part 56b formed along the centrifugal direction in the winding area CA side end surface of the opposing member 54. FIG.

  Accordingly, the starting end portion 30a of the wire rod 30 is inserted through the holding groove 56 in the order of the axial direction portion 56a and the centrifugal direction portion 56b after the tip end portion is sandwiched between the movable member 52 and the opposing member 54, and the winding region CA. Will head to. In the present embodiment, the starting end portion 30a is thus clamped on the opposite end face of the winding area CA in the facing member 54, and then guided to the winding area CA via the centrifugally outer end face and the winding area side end face. By doing so, the tension T acting on the starting end portion 30 a is converted into the frictional force in the axial direction portion 56 a of the holding groove 56. Thereby, even if the tension T is large, it is possible to reliably hold the starting end portion 30a.

  The holding groove 56 is appropriately rounded at a portion where the start end portion 30a is bent, so that stress generated at the bent portion of the start end portion 30a is reduced so that breakage or the like is unlikely to occur. Further, as shown in FIG. 2B, the holding groove 56 has a V-shaped cross-section, and is bent between the movable member 52 and the opposing member 54 due to the bending of the tip of the start end 30a. Even when the holding position is slightly deviated, the holding groove 56 having a V-shaped cross section can be accommodated in an appropriate holding position. In the present embodiment, the protrusion 54 c is provided on the facing member 54, so that a predetermined gap is provided between the start end 30 a and the first arm member 42. Although details will be described later, this makes it easy to clamp the start end 30a when the formed coil is taken out.

  Returning to FIG. 2, the second clamp 60 is a member that sandwiches and holds the terminal portion 30 b of the wire 30 when the winding is completed, and is provided at the distal end portion of the second arm member 44. The second clamp 60 is configured to sandwich the terminal portion 30b between the two clamping members 62, and the two clamping members 62 are not shown in the drawing so as to keep in contact with each other. Is always energized by. Further, the two clamping members 62 are arranged side by side in a substantially rotating direction at a position protruding from the second arm member 44 toward the winding area CA.

  That is, the second clamp 60 of the present embodiment is inserted between the two clamping members 62 (that is, clamping) and the two clamping members only by the axial movement of the terminal end portion 30b extending in the centrifugal direction. 62 is configured to be disengaged (that is, opened) from between 62. Thereby, in this embodiment, the process of the termination | terminus part 30b after completion | finish of winding can be made efficient, and it becomes possible to shorten tact time.

  On the opposite side of the winding area CA in the second clamp 60, a release button 64 for releasing the clamping by the two clamping members 62 is provided. When the release button 64 is pressed manually or by a pressing member, an insertion member (not shown) is inserted between the two holding members 62, and the both ends are separated to release the holding of the end portion 30b. It is configured.

  The drive mechanism 70 swings the swing member 43 to operate the first clamp 50 and moves the fixed-side winding jig 32 in the axial direction with respect to the fixed-side spindle 20. The driving mechanism 70 includes a first moving member 72 and a second moving member 74 that are rotatable with the fixed spindle 20 and are capable of reciprocating in the axial direction with respect to the fixed spindle 20. A spring 76 disposed between the moving members 72 and 74, and an actuator (not shown) (for example, an air cylinder) that moves the first and second moving members 72 and 74 in the axial direction. ing.

  The first moving member 72 is disposed adjacent to the rotating member 40, and a pressing pin 72 a that presses the swinging member 43 is provided to protrude in the axial direction toward the swinging member 43. The second moving member 74 is disposed on the proximal end side of the fixed spindle 20 with respect to the first moving member 72, and extends in the axial direction through the first moving member 72. It is connected to the fixing member 33 via the rod 74a. The spring 76 is disposed between the first and second moving members 72 and 74 so as to urge them in a direction to separate them from each other.

  The actuator (not shown) moves the first moving member 72 toward the second moving member 74 against the biasing force of the spring 76 (in the direction away from the winding area CA), or the second movement. The member 74 is configured to move toward the first moving member 72 (in a direction approaching the winding area CA) against the urging force of the spring 76. The actuator is configured to press the first and second moving members 72 and 74 via the roller 78, and moves in the axial direction even when both are rotating together with the stationary spindle 20. It is possible to make it.

  FIGS. 4A and 4B are diagrams showing the operation of the drive mechanism 70. FIG. As shown in FIG. 5A, when the first moving member 72 is moved by the actuator, the pressing pin 72a is separated from the swinging member 43 and the pressing to the swinging member 43 is released. . Then, the swing member 43 swings in a direction away from the first arm 42 by the biasing force of the spring 43b, and the first clamp 50 is in a state in which the movable member 52 is separated from the opposing member 54, that is, the start end portion. It will be in the open state which does not hold | maintain 30a.

  Further, as shown in FIG. 5B, when the second moving member 74 is moved by the actuator, the fixed member 33 and the fixed-side winding shaft 32 connected by the rod 74a are directed toward the tip of the core 36. That is, the coil moves from the winding core 36 in the direction of pushing out the coil. That is, in the present embodiment, the fixed-side winding jig 32 is moved in the axial direction by the drive mechanism 70, so that the coil can be pushed out and taken out from the core 36 without retracting the core 36. . In addition, in the same figure (b), although the example which moved both the 1st and 2nd moving members 72 and 74 is shown, it is also possible to move only the 2nd moving member 74. Needless to say.

  Returning to FIG. 2, when the actuator is not operated, the first and second moving members 72, 74 are held in their normal positions by the springs 76. In this normal state, the first clamp 50 is in a holding state in which the start end portion 30a is sandwiched and held, and the fixed-side winding jig 32 is in a winding-capable state in which the winding core 36 protrudes. . That is, in the present embodiment, during the winding for rotating the winding core 36 and the like, the first clamp 50 maintains the holding state without applying any external force, and the fixed-side winding jig 32 can be wound. Is supposed to maintain. Furthermore, in this embodiment, the spring 76 is disposed between the first and second moving members 72 and 74 so that the spring 76 is used for both the first and second moving members 72 and 74. As a result, the weight and the moment of inertia of the portion rotating in the winding are reduced.

  The wire supply device 80 supplies the wire 30 from the supply source of the wire 30 toward the winding area CA. The wire supply device 80 includes a guide nozzle 82 that guides the wire 30 to the winding area CA, the first clamp 50, and the second clamp 60, and a third provided on the upstream side (inlet side) of the guide nozzle 82. The clamp 84 is provided. Although not shown, the wire rod supply device 80 includes a tension device that applies tension to the wire rod 30 to be supplied, a guide roller for guiding the wire rod 30 to the guide nozzle 82, and the like. Further, the wire rod supply device 80 includes a moving mechanism (for example, a motor and a ball screw transmission mechanism) that reciprocally moves the guide nozzle 82 and the third clamp 84 in the axial direction and the centrifugal direction (direction orthogonal to the axial direction). Yes.

  3B to 3D are cross-sectional views of the guide nozzle 82. As shown in these drawings, the guide nozzle 82 is a stepped cylindrical member having a thin outer diameter on the distal end side (exit side), and the wire 30 is inserted through the central hole 82a and guided. . At the distal end portion (end portion on the outlet side) of the guide nozzle 82, a substantially cylindrical distal end member 82b made of a wear-resistant material such as jewelry such as ruby or ceramics is provided.

  Although details will be described later, in the present embodiment, the tip 82c of the guide nozzle 82 is brought closer to the core 36 than the outer peripheral end 32e of the fixed-side winding jig 32 during winding, and is shown in FIG. Thus, the wire 30 is extended in the direction (diagonal direction) which has an angle with respect to the axial direction of the guide nozzle 82 during winding. Further, when the wire rod 30 is placed in a predetermined state by moving the guide nozzle 82 in order to process the starting end portion 30a and the terminal end portion 30b of the wire rod 30, as shown in FIG. In some cases, the wire 30 may extend in a direction significantly different from the axial direction of the guide nozzle 82.

  That is, in the present embodiment, the tip 82c of the guide nozzle 82 is made to function as a contact portion that contacts and bends the wire 30. For this reason, in this embodiment, by appropriately rounding the tip 82c of the guide nozzle 82 (that is, the tip of the tip member 82b), when the wire 30 comes into contact with the tip 82c, this is smoothly bent and is appropriate. The wire 30 is not easily broken or the like. For the same purpose, the edge 82d on the base end side (inlet side) of the hole 82a is appropriately rounded.

  Returning to FIG. 2, the third clamp 84 is configured to hold the wire 30 in front of the guide nozzle 82 between the two holding members 84 b. In other words, the third clamp 84 holds the wire 30 so as not to move relative to the guide nozzle 82. The two clamping members 84b are driven by a solenoid or the like (not shown). In this embodiment, the wire 30 is clamped by the third clamp 84 that moves together with the guide nozzle 82, so that the processing of the start end 30a can be performed efficiently.

  Returning to FIG. 1, the winding device 1 further heats the wire 30 during the winding, the cutting device 90 that cuts the terminal portion 30 b of the wire 30, the transport device 100 that carries out the coil that has been wound. And a control device 120 for controlling the entire winding device 1.

  The cutting device 90 includes two shearing members 92 that are operated by solenoids or the like, and is configured to cut the end portion 30b of the wire rod 30 by the two shearing members 92. Further, the cutting device 90 is driven by an air cylinder or the like (not shown) to move between a cutting position for cutting the end portion 30b and a retracted position.

  The conveying device 100 holds the coil taken out from the winding core 36 and conveys it to the next process such as press molding, or delivers it to the next conveying device. The conveyance device 100 includes a coil holding unit 102 that holds a coil, a starting end holding unit 104 that holds a starting end 30a (one lead), and a termination holding unit that holds a termination 30b (the other lead). 106, and is configured to convey the coil in a state in which it is in the winding state, that is, in a state where the axial direction of the coil is a vertical direction.

  The heating device 110 heats the wire 30 by blowing hot air toward the winding area CA, softens the adhesive covered with the wire 30, and bonds the wires 30 wound around the winding core 36 together. Is. The heating device 110 is driven by an air cylinder or the like (not shown) to move between a proximity position where the hot air outlet is close to the winding area CA and a retracted position. The control device 120 includes a CPU, a ROM, a RAM, and the like, and controls the operation of each part of the winding device 1 including the motor 24.

  Next, the operation of the winding device 1 will be described with reference to FIGS.

  5 (a) to 5 (c) and FIGS. 6 (a) and 6 (b) are diagrams showing the wire 30 until it is set in a winding start state in which the wire 30 can be wound. When starting the winding, as shown in FIG. 5A, first, the stationary spindle 20 and the movable spindle 22 are rotated to position the first clamp 50 on the guide nozzle 82 side, and the first 1 clamp 50 is left open. Then, the wire 30 is clamped by the third clamp 84 with the start end 30a appropriately protruding from the tip 82c of the guide nozzle 82, and the guide end 82 and the third clamp 84 are moved to move the start end 30a. Guide between the member 52 and the opposing member 54.

  Next, as shown in FIG. 5B, the swing member 43 is swung by the drive mechanism 70, and the start end portion 30 a is sandwiched between the movable member 52 and the opposing member 54. Then, after releasing the clamping by the third clamp 84, the guide nozzle 82 and the third clamp 84 are moved in the axial direction toward the winding area CA while being separated in the centrifugal direction. Then, as shown in FIG. 5C, the guide nozzle 82 and the third clamp 84 are moved in the centripetal direction so as to be close to the winding area CA. As a result, the guide nozzle 82 is disposed at a winding position where the tip 82 c is closer to the winding core 36 than the outer peripheral end 32 e of the fixed-side winding jig 32.

  In this manner, by moving the guide nozzle 82 and the third clamp 84 with the third clamp 84 opened, the starting end portion 30a is fitted into the predetermined holding groove 56 while the wire rod 30 is fed out from the guide nozzle. Can be inserted (inserted). Further, at this time, since the starting end portion 30a is fed out while being bent in contact with the tip 82c of the guide nozzle 82, it is possible to appropriately adjust the residual distortion such as curl at the starting end portion 30a. ing. In other words, in the present embodiment, the curl or the like at the start end 30a is appropriately corrected in the process of holding the start end 30a and arranging the guide nozzle 82 at the winding position.

  After the guide nozzle 82 is disposed at the winding position, the stationary spindle 20 and the movable spindle 22 are rotated as shown in FIGS. 6 (a) and 6 (b). When the first clamp 50 reaches the position shown in FIG. 6B, the starting end 30a is fitted (inserted) into the positioning groove 32c formed in the fixed-side winding jig 32. . At this time, the wire 30 is arranged in an appropriate position and orientation with respect to the core 36 and is set in a winding start state in which the wire 30 can be wound.

  FIG. 7A is a diagram showing the positional relationship in the winding start state. In the winding start state, a part of the start end portion 30a is fitted into the positioning groove 32c, so that the side surface of the wire 30 is the winding start point SP (the point where the wire 30 first contacts the outer peripheral surface of the winding core 36). ) At an appropriate angle. The guide nozzle 82 disposed at the winding position extends in a direction in which the wire rod 30 that contacts the winding start point SP at an appropriate angle forms a predetermined angle θ2 with respect to the axial direction of the guide nozzle 82. Thus, the tip 82c of itself is located at a position away from the rotation center axis C by a predetermined distance D.

  By arranging the guide nozzle 82 in this way, the tip 82c of the guide nozzle 82 can be brought into contact with the wire 30 from the side opposite to the core 36. Therefore, the positioning groove 32c and the tip 82c of the guide nozzle 82 are provided. It is possible to hold the wire 30 in an appropriate position and orientation in between, and to appropriately bring the side surface of the wire 30 into contact with the winding start point SP. Thereby, in this embodiment, it is possible to effectively prevent winding disturbance at the start of winding, which most affects the quality of the coil.

  The setting of the angle θ2 is not particularly limited, but in order to achieve both proper holding of the wire 30 in the winding start state and smooth feeding of the wire 30 from the guide nozzle 82 during winding. The angle θ2 is preferably within a range of 10 to 60 °. The distance D from the rotation center axis C to the tip 82c of the guide nozzle 82 can be determined based on the setting of the angle θ2 and the shape and dimensions of the winding core 36.

  FIG. 7B is a diagram showing a state during winding. As described above, in the present embodiment, the guide nozzle 82 in the winding is in a state in which the tip 82c is closer to the core 36 than the outer peripheral end 32e of the fixed-side winding jig 32 by setting the angle θ2. Yes. For this reason, even when the winding core 36 or the like is rotated at a higher speed than before, the wire 30 between the tip 82c of the guide nozzle 82 and the winding core 36 is less likely to be shaken. Further, since the wire 30 fed from the guide nozzle 82 during winding is drawn while being appropriately bent in contact with the tip 82c, the wire 30 is wound around the core 36 after the residual strain is adjusted appropriately. It has come to be.

  Further, in the present embodiment, the first clamp 50 is disposed so as to be spaced apart in the centrifugal direction with respect to the core 36, but the side surface of the start end portion 30 a from the opposite side of the core 36 in the fixed-side winding jig 32. By providing the steady pin 32c so as to be substantially in contact with the first end portion 30a, the start end 30a is effectively prevented from shaking. Therefore, according to the winding device 1 of the present embodiment, it is possible to perform winding with higher speed and higher quality than before. In addition, although illustration is abbreviate | omitted, it cannot be overemphasized that the guide nozzle 82 and the 3rd clamp 84 reciprocate to an axial direction according to the change of the winding position of the wire 30 in winding.

  FIGS. 8A to 8C are diagrams illustrating the process until the termination 30b is cut after the winding is completed. After the winding is completed and the coil 30c is formed around the winding core 36, the fixed spindle 20 and the movable spindle 22 are first rotated as shown in FIG. The clamp 60 is positioned on the guide nozzle 82 side. Next, with the third clamp 84 opened, the guide nozzle 82 and the third clamp 84 are first moved in the centrifugal direction, and are positioned outside the second clamp 60 in the centrifugal direction, so that the end portion 30 b is fed out from the guide nozzle 82.

  After that, by moving the guide nozzle 82 and the third clamp 84 in the axial direction toward the second third clamp 60 side, the extended end portion 30b of the two clamping members 62 of the second clamp 60 is moved. The end 30b is held by the second clamp 60 by being pushed in between. Since the holding of the end portion 30b in the second clamp 60 does not maintain the holding state during the winding, in this embodiment, such a simple holding structure is adopted for holding the end portion 30b. ing. And thereby, the process of the termination | terminus part 30b after completion | finish of winding is speeded up.

  At substantially the same time as holding the end portion 30 b by the second clamp 60, the movable side spindle 22 is moved in the axial direction to separate the movable side winding jig 34 from the fixed side winding jig 32. Then, as shown in FIGS. 7B and 7C, the wire 30 is clamped by the third clamp 84 and the cutting device 90 is moved from the retracted position to the cutting position, so that the second clamp 60 and the guide nozzle The wire 30 is cut between the tips 82c of 82. As a result, the formed coil 30 c is separated from the wire rod 30 together with the two lead portions of the start end portion 30 a and the end end portion 30 b, and can be taken out from the core 36.

  FIGS. 9A and 9B and FIGS. 10A to 10C are diagrams showing the process from taking out the coil 30c from the winding core 36 to holding it in the transport apparatus 100. FIG. After the wire 30 is cut by the cutting device 90, the cutting device 30 is first retracted to the retracted position as shown in FIG. Note that a new starting end 30d is appropriately projected from the tip 82c of the guide nozzle 82 by cutting, and the next winding can be performed by sandwiching the new starting end 30d in the first clamp 50 as it is. it can.

  Next, substantially simultaneously with the retraction of the cutting device 90, as shown in FIG. 9B, the fixed-side spindle 20 is rotated so that the start end 30a and the end end 30b together with the coil 30c face the conveying device 100. Then, the conveying device 100 is moved in the centripetal direction toward the lower side of the core 36, and is positioned at the receiving position for receiving the coil 30 c below the core 36.

  In the present embodiment, the end portion 30 b is held by the second clamp 60 by appropriately setting the orientation of the winding core 36 and the holding position of the first clamp 50 based on the holding position of the second clamp 60. At this time, the start end portion 30a and the end end portion 30b are extended in the direction according to the specification of the lead portion set in advance. Therefore, the conveying apparatus 100 is configured to convey the coil 30c while maintaining this state.

  As shown in FIG. 9B, the transport apparatus 100 according to the present embodiment includes two holding pins 102a inserted from below into the coil 30c in the coil holding part 102, and the starting end part 30a from above and below. Two clamping members 104a for clamping are provided in the start end holding part 104, and two clamping members 106a for holding the end part 30b from above and below are provided in the end holding part 106. Then, as shown in FIG. 10A, at the receiving position, the conveying device 100 is configured such that the tip of the holding pin 102 a substantially abuts on the tip of the core 36, and the two holding members 104 a of the start end holding portion 104 are The starting end portion 30a is sandwiched therebetween, and the two clamping members 106a of the termination end holding portion 106 are in a state of sandwiching the termination portion 30b therebetween.

  In the present embodiment, the first and second clamps 50 and 60 are arranged to be spaced outward in the centrifugal direction with respect to the outer peripheral end 32e of the fixed-side winding jig 32, and the start end portion 30a and the first arm member 42 are disposed. Since the predetermined gaps are provided between the end portion 30b and the second arm member 42, the start end holding portion 104 can be obtained simply by moving the transport device 100 toward the receiving position in the centripetal direction. The end portion 30 a can be positioned between the two holding members 104 a, and the end portion 30 b can be positioned between the two holding members 106 a of the end holding portion 106. That is, in the present embodiment, the coil 30c can be sandwiched between the start end 30a and the end end 30b without adopting a complicated configuration for the transport device 100 or performing a complicated operation. Can be quickly and efficiently taken out.

  After the transport device 100 is moved to the receiving position, as shown in FIG. 10B, the clamping members 104a and 106b are operated by a solenoid or the like (not shown) to clamp the start end 30a and the end 30b. To do. At the same time, the first clamp 50 is opened.

  Then, as shown in FIG. 10 (c), the fixed-side winding jig 32 is moved in the axial direction to push the coil 30c out of the winding core 36 and move it to the holding pin 102a of the transport device 100. The starting end holding portion 104 and the terminal end holding portion 30b are moved in the axial direction by a solenoid or the like (not shown) to disengage the starting end 30a from the first clamp 50 and the end portion 30b from the second clamp 60. Let go. Thereby, the coil 30c is delivered to the conveying apparatus 100 in a state where the start end portion 30a and the end end portion 30b are held.

  FIG. 11A is a top view of the transport apparatus 100 in a state where the coil 30c is held. As shown in the figure, the coil 30c is held with the holding pin 102a inserted therein, and the start end 30a and the end 30b are sandwiched from above and below by the sandwiching members 104a and 106a. It is conveyed by. Accordingly, the coil 30c can be transported quickly and smoothly without being caught by surrounding members during transport of the start end portion 30a and the end end portion 30b.

  Further, the start end 30a and the end 30b are extended in the direction according to the specifications of the lead portion when the end 30b is held by the second clamp 60, and the conveying device 100 maintains the coil state in this state. Since 30c is conveyed, it is not necessary to adjust the extending direction of the start end portion 30a and the end end portion 30b in a subsequent process, and the coil can be manufactured quickly and efficiently.

  In the winding device 1 of the present embodiment, the coil 30c that has been wound is not transported by the transport device 100, but the coil 30c can be dropped from the winding core 36 onto a carry-out chute or the like. It has become. FIGS. 11B and 11C are diagrams illustrating a procedure when the coil 30c is dropped from the winding core 36 and carried out.

  In this case, first, as shown in FIG. 5B, the swinging member 43 is swung to bring the first clamp 50 into the open state, and the release button 64 is pressed by the pressing member 66 to press the second button. The clamp 60 is opened. Further, the winding core 36 is retracted from the distal end surface 32 a of the fixed-side winding jig 32. Then, as shown in FIG. 5C, the pushing member 132 pushes the coil 30c from the lateral direction to separate it from the fixed side winding shaft 32, and the two substantially hook-shaped pushing pins 134 cause the start end 30a and The end portion 30b is detached from the first and second clamps 50, 60, and the coil 30c is dropped. As described above, in the present embodiment, even when the coil 30c is dropped, a complicated operation is not required for the processing of the start end portion 30a and the end end portion 30b, so that the coil 30c can be taken out quickly and efficiently. It has become.

  As described above, the winding device 1 for an air-core coil according to the present embodiment can be rotated together with the winding core 36 around which the wire 30 to be the coil 30c is wound and the winding core 36 by rotating itself. A fixed side winding jig 32 for determining a winding start position in a winding area CA around which the wire 30 is wound, and a guide nozzle 82 for guiding the wire 30 to the winding area CA. The arrangement position in the winding of 82 is such that the tip 82c of the guide nozzle 82 is closer to the winding core 36 than the outer peripheral end 32e of the fixed-side winding jig 32.

  Further, in the winding method of the air-core coil according to the present embodiment, the tip 82c of the guide nozzle 82 that guides the wire 30 wound around the winding core 36 is fixed to the fixed-side winding jig 32 that determines the winding start position. The winding is carried out closer to the core 36 than the outer peripheral end 32e.

  By adopting such a configuration, the length of the wire 30 extending between the core 36 and the guide nozzle 82 can be made shorter than before, so that the vibration (vibration) of the wire 30 in the winding can be reduced. It becomes possible to reduce. As a result, the core 36 can be rotated at a higher speed than before without degrading the quality of the coil 30c to be formed, and the air-core coil can be manufactured more efficiently than before.

  Further, the arrangement position in the winding of the guide nozzle 82 is a position where the wire 30 extends in a direction having an angle with respect to the axial direction of the guide nozzle 82. By doing so, the wire rod 30 is appropriately bent at the tip 82c of the guide nozzle 82 to appropriately adjust the residual distortion such as curl, and the occurrence of winding disturbance due to curl or the like can be prevented. Therefore, high-quality winding can be performed while rotating the winding core 36 at a high speed.

  In addition, the guide nozzle 82 is arranged in the winding position when the winding wire starting point SP is a point where the wire rod 30 first contacts the outer circumferential surface of the winding core 36 when starting winding. The position is in contact with the winding start point SP while extending in a direction that forms an angle of 10 to 60 ° with respect to the axial direction of the guide nozzle 82. By doing so, it is possible to start winding after arranging the wire rod 30 in the most appropriate state, so that winding disturbance at the start of winding that most affects the quality of the coil 30c is effectively prevented. Can be prevented.

  Moreover, the guide nozzle 82 is provided with the contact part (front-end | tip 82c) which contacts and bends the wire 30 extended from self. In this way, the wire 30 can be appropriately bent and extended in an appropriate direction, and the residual strain of the wire 30 can be adjusted appropriately, so that high-quality winding can be performed. it can.

  Further, the contact portion 82 is rounded on the surface that contacts the wire 30. By doing so, it is possible to smoothly bend and prevent breakage and the like, and it is possible to appropriately adjust the residual strain of the wire 30, so that high-quality winding can be performed.

  In the present embodiment, an example in which the rotation center axis C of the winding is substantially vertical is shown, but the present invention is not limited to this, and the rotation center axis C is set in other directions. It may be. Further, the movable spindle 20 may be disposed on the lower side and the fixed spindle 22 may be disposed on the upper side.

  In the present embodiment, the first end portion 30a and the end portion 30b are held by the first and second clamps 50, 60 arranged on the outer side in the centrifugal direction of the fixed-side winding shaft 32. The invention is not limited to this, and the start end 30a and the end 30b may be held by a conventional method.

  The shape of the guide nozzle 82 may be other shapes as long as it can guide the wire 30 appropriately. Further, the contact portion of the present invention is not limited to the shape and structure of the tip 82c of the guide nozzle 82 shown in the present embodiment, and can be appropriately bent by appropriately contacting the wire 30. Any other shape and structure may be used. Further, the third clamp 84 may hold the wire 30 at an intermediate portion or a tip portion of the guide nozzle 82.

  Further, the conveying device 100 may be provided not in the winding device 1 but in an external device. Further, the holding structure of the coil 30c, the start end portion 30a, and the end end portion 30b in the transport apparatus 100 is not limited to the structure shown in the present embodiment, and may be another existing structure. Moreover, the conveying apparatus 100 may not hold | maintain the start end part 30a and the termination | terminus part 30b.

  Although the embodiment of the present invention has been described above, the winding device and winding method for the air-core coil of the present invention are not limited to the above-described embodiment, and do not depart from the gist of the present invention. Of course, various changes can be made.

  The winding device and winding method of the air-core coil of the present invention can be used in the field of winding various coils other than the air-core coil.

DESCRIPTION OF SYMBOLS 1 Winding device of an air core coil 30 Wire rod 30c Coil 32 Fixed side winding jig 32e Outer peripheral end of fixed side winding jig 36 Winding core 82 Guide nozzle 82c Guide nozzle tip CA winding area SP Winding start point

Claims (6)

A core around which a wire that becomes a coil is wound by rotating itself;
A winding jig that is rotatably provided with the winding core and determines a winding start position in a winding region in which the wire is wound;
A guide nozzle for guiding the wire rod to the winding region,
The arrangement position of the guide nozzle in the winding is a position where the tip of the guide nozzle is closer to the winding core than the outer peripheral end of the winding jig,
Air core coil winding device. The arrangement position in the winding of the guide nozzle is a position where the wire extends in a direction having an angle with respect to the axial direction of the guide nozzle.
The winding device according to claim 1. When the winding position of the guide nozzle in the winding is the winding start point at which the wire first comes into contact with the outer peripheral surface of the winding core when starting the winding, the wire rod becomes the guide nozzle. It is a position in contact with the winding start point in a state of extending in a direction forming an angle of 10 to 60 ° with respect to the axial direction of
The winding device of the air-core coil according to claim 1 or 2. The guide nozzle includes a contact portion that contacts and bends the wire extending from the guide nozzle,
The winding device for an air-core coil according to claim 2 or 3. The contact portion is characterized in that a surface that contacts the wire is rounded.
The winding device for an air-core coil according to claim 4.   An air core characterized in that winding is performed with the tip of a guide nozzle that guides a wire wound around the winding core being closer to the winding core than the outer peripheral end of a winding jig that determines the winding start position. Coil winding method.

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