WO2005022722A1

WO2005022722A1 - Coil winding machine

Info

Publication number: WO2005022722A1
Application number: PCT/JP2004/012888
Authority: WO
Inventors: Masaru Hirako; Eiji Yamada; Shuji Satou
Original assignee: Toyota Jidosha Kabushiki Kaisha
Priority date: 2003-08-29
Filing date: 2004-08-30
Publication date: 2005-03-10
Also published as: JP4192727B2; CN100405708C; JP2005080363A; CN1701490A

Abstract

An object is to provide a coil winding machine which makes it possible to increase the stroke of a winding frame piece without making the whole larger. A coil winding machine in which a stepped winding frame moves in the direction of the center axis of rotation as a flyer turns, whereby the winding frame is wound with coils on a plurality of steps to form coils different in perimeter. In this coil winding machine, a movable winding frame (10) has a stroke bar (13) formed with a cam groove, and pins extending through the cam groove on each step are fixed to a pair of racks (22, 22) disposed with the stroke bar (13) therebetween. Pinion gears (23, 23) mesh with the racks (22, 22) and have arms (24, 24) which are disposed with the stroke bar (13) therebetween and fixed to the gears (23, 23) such that the arms cross each other. Winding frame pieces (25A, 15B, 15C) are connected to the front ends of the two arms (24, 24) in such a manner as to hold the same attitude with respect to the operation of the arms (24, 24).

Description

Description Coil winding machine Technical field

The present invention relates to a coil winding machine for manufacturing a motor used in household electric appliances, automobiles, and the like, and more particularly, to a coil winding machine provided with a variable step in a winding frame to change a circumferential length of a coil. In particular, the present invention relates to a coil winding machine configured to be able to increase the changing step stroke. Background art

2. Description of the Related Art Conventionally, a coil winding machine for manufacturing a motor provided with a step that can be varied in a winding frame in order to change the circumferential length of a coil has been proposed. It is described in Japanese Patent Publication No. 4122.

As for the motor coil, a plurality of coils are wound around a winding frame of a coil winding machine in a spiral shape, and thereafter are planted at predetermined intervals around the same circumference as shown in FIG. It is deposited in a coil insertion jig 200 having a blade 201 and is inserted into a predetermined slot 310 of a stator 300 mounted on the coil insertion jig 200 to be transferred. However, if the circumferences of the coils 401 to 405 are all set to the same length according to the part that requires the longest length for insertion into the slot 301 and molding, Depending on the position of slot 301 to be inserted, it will be inserted with a length longer than necessary. As a result, the size of the coil end becomes large and the stator becomes large, and at the same time, there is a problem that extra copper loss occurs and the efficiency of the motor decreases.

On the other hand, Patent Document 1 proposes a coil winding machine in which each coil has a different circumference. FIG. 5 is a view showing the coil winding machine, and FIG. 6 is a view showing a winding state of the coil. FIG. 7 is a view showing a state in which a step is provided on the winding frame of the coil winding machine. The coil winding machine 100 is disposed as shown in FIG. 5 with respect to the coil insertion jig 200, and the coil winding machine 100 has a support in which the winding frame 110 can move up and down. As shown in Fig. 6, the coils 401 to 405 wound on the winding frame 110 by the push plate 13 at the lower end held by the plate 13 1 and the coil dropper 13 2 are lowered. It is configured to be released. On the outside of the winding frame 110, a flyer 120 through which a band of ten wires 400 forming the coils 401 to 405 are rotatably provided is provided. The wire 400 is spirally wound around the descending winding frame 110 as shown in FIG. 6 by rotating around the winding frame 110 at high speed.

The winding frame 1 10 is provided with a fixed winding frame 1 1 1 and a movable winding frame 1 1 2 with respect to a support plate 13 1. As shown in FIG. 7, the movable winding frame 112 is a guide in which the first to fourth winding frame pieces 151 to 154 can slide in the horizontal direction through the substrate 156. The guide plate 16 2 is integrated with the shaft 16 1 and fixed to the guide shaft 16 1. The force S is urged by the compression springs (not shown) to the fixed winding frame 1 11 1 on the left side of the drawing. ing. At the shaft center A of the winding frame 110, a cam 17 1 to 1 74 is formed integrally with the force shaft 17 0, and by the rotation of the cam shaft 170, the force 17 1 to 1 Each of the winding frame pieces 15 1 to 15 4 pressed by 74 is pushed outwardly against the urging force of the compression spring to form a step. Therefore, as shown in Fig. 6, the wire 400 is wound between the fixed winding frame 111 and the first to fifth laps to form coils 401 to 405 having different circumferences. Become.

Thereafter, the bobbin 110 descends, and the blade 201 of the coil insertion jig 200 is inserted into the gap 1 13 with the fixed bobbin 1 1 1. As shown in FIG. 6, when the winding of the coil is completed, the step of the movable winding frame 112 disappears due to the reverse rotation of the camshaft 170, and the winding is wound around each of the winding frame pieces 151 to 154. The coils 401 to 405 in the first to fifth laps are in a relaxed state. Then, the coils 401 to 405 are released by the drop of the coil dropper 132, and the state becomes the same as the state shown in FIG. Then, as described above, the coils 401 to 405 mounted on the coil insertion jig 200 are fixed to the predetermined slots of the stator 300. Inserted into slot 301 and transferred. At this time, since the circumference of the coils 401 to 405 differs depending on the location of the slot 301 to be inserted, the total coil length inserted into the stator is shortened to reduce copper loss. It can be done.

[Patent Document 1] Japanese Patent Application Laid-Open Publication No. 2000-3-1664122 (Pages 2 to 6, Fig. 1, 4, 7, 13)

However, the conventional coil winding machine disclosed in Patent Document 1 rotates the cams 17 1 to 17 4 integral with the cam shaft 17 0 and guides the cams 17 1 to 17 4 The driving mechanism is configured to displace the winding frame pieces 15 1 to 15 4 applied via the guide shaft 16 1 and the guide plate 16 2. Sufficient stroke could not be obtained for the displacement of 154. In order to obtain a large stroke, the shape of the cams 17 1 to 17 4 must be similarly increased, and therefore the size of the entire coil winding machine 100 as well as the winding frame 110 increases. It is because it will be done. Further, Patent Document 1 shows only two types of variable patterns by the winding frame pieces 151 to 154. However, in order to change more patterns, cams 171 to 174 are used. There was a limit in specifying the shape of the object.

In this regard, it is conceivable to use a cylinder as a drive mechanism. This is because the cylinder can arbitrarily control the output, so that more variable patterns can be obtained. However, if a cylinder is used, an attempt to obtain a large stroke will also increase the size of the winding frame and the coil winding machine, and a large stroke cannot be obtained with a small cylinder.

Therefore, an object of the present invention is to provide a coil winding machine capable of increasing the stroke of a winding frame piece without increasing the size of the whole, in order to solve such a problem. DISCLOSURE OF THE INVENTION

In the coil winding machine of the present invention, the fixed winding frame and the distance from the fixed winding frame are set in a plurality of stages. A flyer that rotates while supplying a wire is disposed on a winding frame having a movable winding frame that can be divided and changed, and the flyer rotates while supplying a wire, and the winding frame moves in the direction of the center axis of the rotation. By moving, the coil is wound around the winding frame in a plurality of stages to form coils having different circumferential lengths. The movable winding frame expands and contracts with the opening and closing of the crossed arms. A winding mechanism attached to the end of the arm on which the coil is directly wound by the rotation of the gear by rotating the gear through a gear provided integrally with the arm. Is characterized in that the distance from the fixed bobbin is variable.

In addition, the coil winding machine of the present invention turns while supplying a wire to a winding frame including a fixed winding frame and a movable winding frame that can change the distance from the fixed winding frame into a plurality of stages. A flyer is arranged, and the flyer rotates while supplying wire, and the bobbin moves in the direction of the center axis of the bobbin. A coil is formed, wherein the movable winding frame has a stroke par in which a cam groove is formed corresponding to each step for making the circumference of the coil different, and for each step, Pins penetrating the cam groove are fixed to a pair of racks arranged with a stroke par therebetween, and a pinion gear engages with each rack, and an arm arranged with a stroke par intersects the pinion gear. So that both A winding frame piece around which the coil is directly wound is connected to a distal end of the arm so as to maintain the same posture with respect to the operation of the arm.

According to the coil winding machine of the present invention, in order to realize a movable winding frame having a plurality of stages, a gear provided integrally with the arm is rotated, and the crossed arms are opened and closed with each other. The position of the winding piece for each step is controlled. More specifically, for example, by moving the stroke par up and down, the rack is moved in the lateral direction via a pin that follows the cam groove, and the movement of the rack rotates the pinion gear to open and close the crossed arms. Since the winding frame piece is attached to the end of the arm, the distance from the fixed winding frame is It is adjusted for each stage by the amount of rack movement, that is, the amount of rotation of the pinion gear.

Therefore, the present invention has a driving mechanism that performs expansion and contraction associated with opening and closing of the crossed arms by giving rotation to the arm through a gear provided integrally with the arm, and the coil is operated by the operation of the driving mechanism. The movable bobbin is constructed such that the bobbin piece attached to the end of the arm to which it is directly wound can change the distance from the fixed bobbin. As a result, it has become possible to provide a coil winding machine capable of increasing the stroke of the bobbin pieces without increasing the overall size. Brief description of drawings ·

FIG. 1 is a perspective view showing an embodiment of a movable winding frame constituting a coil winding machine.

FIG. 2 is a perspective view showing the internal structure of the movable winding frame shown in FIG. FIG. 3 is a sectional view of a winding frame including the movable winding frame shown in FIG.

FIG. 4 is a view showing a stroke parker inserted into the movable bobbin shown in FIG.

FIG. 5 is a diagram showing a conventional coil winding machine.

FIG. 6 is a diagram showing a coil winding state in a conventional coil winding machine.

FIG. 7 is a view showing a state in which a step is formed on a winding frame in a conventional coil winding machine.

FIG. 8 is a diagram showing a state where the coil wound by the coil winding machine is stored in a coil insertion jig. BEST MODE FOR CARRYING OUT THE INVENTION

Next, an embodiment of a coil winding machine according to the present invention will be described below with reference to the drawings. The coil winding machine of the present embodiment is disclosed in the above-mentioned Patent Document 1. As in the conventional example shown in FIG. 1, a flyer 120 in which a wire 400 forming a coil is inserted is rotatably provided outside the winding frame, and the flyer 120 rotates around the winding frame at a high speed. The wire 400 is spirally wound on the descending winding frame. Also, the coil winding machine of the present embodiment is also configured such that a step is provided on the winding frame so that the coil circumference can be variably set. The feature is that the structure is such that a large step stroke can be taken.

FIG. 1 is a perspective view showing a movable winding frame constituting the coil winding machine of the present embodiment, and FIG. 2 is a perspective view showing an internal structure of the movable winding frame. Since the flyer and the like have the same configuration as that of the conventional example shown in FIG. 5, they will not be shown in the figure, and the point will be described below with reference to FIGS. 5 and 6 as appropriate. It will be explained.

The movable bobbin 10 of the bobbin constituting the coil winding machine is provided with three upper and lower bobbin pieces 15 A, 15 B, 15 C constituting a step with respect to the body 11. The setting of the circumference of the coil can be adjusted by the movement position of the winding frame pieces 15A, 15B and 15C. The drive mechanism of the winding pieces 15A, 15B, and 15C has a guide hole 12 that penetrates the body 11 up and down, and the guide hole 12 shown in FIG. The stroke par 13 with the cam grooves 31, 32 and 33 cut is inserted. The three cam grooves 31, 32, 33 provided in the stroke par 13 are formed corresponding to the winding frame pieces 15 A, 15 B, 15 C arranged vertically. ing.

The coil winding machine of the present embodiment is for mounting U-phase, V-phase, and W-phase coils on a stator to manufacture a three-phase motor. Therefore, the shape of the cam grooves 31, 32, 33 cut into the stroke PAR 13 is determined so that each stroke corresponding to the U-phase, V-phase, and W-phase can be output. That is, the cam grooves 31, 32, and 33 of the three patterns have points (15 A, 15 B, and 15 C) for positioning the winding pieces 15 A, 15 B, and 15 C according to the U, V, and W phases, respectively. U l, VI, W 1 / U 2, V 2, W2 / U 3, V 3, W3).

The stroke bar 13 having the cam grooves 31, 32, 33 has a cam frame piece 31 A, 15 B, 1 for each cam groove 31, 32, 33. The movable pins 21A, 21B, 21C penetrate in the orthogonal direction every 5C. The drive mechanism of the movable winding frame 10 has the same configuration as that shown below in all of the winding frame pieces 15A, 15B, and 15C. For this reason, the structure of the drive mechanism is described with reference to the portions corresponding to the winding frame pieces 15A, and the reference numerals are omitted for the winding frame pieces 15B and 15C.

The movable pins 21 A, 21 B, 21 C are fixed to a pair of racks 22, 22 arranged so as to sandwich the stroke PAR 13, respectively. It is configured so that it can be moved only in the horizontal direction where is lined up. That is, the movable pins 21A, 21B, 21C can move only in the lateral direction in which the winding pieces 15A, 15B, 15C move with respect to the body 11; In FIG. 4, when the stroke PAR 13 moves up and down, the same height is pushed laterally according to the position of the cam grooves 31, 32, and 33 to change the position.

The pair of racks 22 and 22 are respectively engaged with fan-shaped pinion gears 23 and 23 in the body 11 as shown in FIG. Therefore, according to the configuration of the drive mechanism up to this point, the vertical movement of the stroke PAR 13 causes the pair of racks 22, 22 to move through the movable pins 21 A, 21 B, 21 C. The movement is changed to a movement that moves in the lateral direction, and is further transferred to the rotation movement of the pinion gears 23 and 23 that mesh with the racks 22 and 22.

Further, in the drive mechanism of the movable winding frame 10, arms 24, 24 are mounted above and below the pinion gears 23, 23 so as to intersect with the pinion gears 23 on the opposite sides, respectively. Here, the paired racks 22 and 22 and the pinion gears 23 and 23 are symmetrically arranged with the stroke par 13 interposed therebetween. Therefore, the crossed arms 24, 24 ... are configured to open and close symmetrically like scissors as the pinion gears 23, 23 rotate. That is, the tip of the crossed arms 24, 24 ... Is a movement that extends in the direction away from the stroke parker 13 (fixed bobbin 30 shown in Fig. 3) by narrowing the gap, or conversely, expands the gap and shrinks to approach the fixed bobbin 30. It is configured to

The winding pieces 15 A, 15 B, 15 C are supported and attached to the tips of the arms 24, 24. The winding frame pieces 15A, 15B, and 15C have surfaces curved in the winding direction of the coil, and have upper and lower arms 24, 24 ... mounting pins 25, 25 protruding from the tips. Slots 16 and 16 are formed to engage with. As described above, when the intersecting arms 24, 24 open and close, respectively, the movement trajectory of the mounting pins 25, 25,... At the tip draws an arc, but the mounting pins 25, 25,. It freely moves in the longitudinal direction in the holes 16 and 16, and its movement is restricted in the stroke direction of the winding pieces 15A, 15B and 15C perpendicular to it. Therefore, the winding strips 15A, 15B and 15C are configured so as to linearly advance and retreat in a direction perpendicular to the surface without changing the standing posture as shown in FIG. I have.

The winding frame pieces 15A, 15B, and 15C operated by such a driving mechanism are stopped at a predetermined projecting position, and the coil is wound. Since the coil is wound with a strong force, the winding pieces 15A, 15B, 15C are supported not only by the arms 24, 24 ... but also by a plurality of working ports 26 ... The mouth 27 is supported without play. The working opening 26 and the supporting rod 27 project from the racks 22 and 22. As shown in FIG. 3, the working rod 26 receives the elastic force of the panel in the drawing direction (see the drawing). (Left side), and the support rod 27 is slidably mounted via a bush. Therefore, the reel pieces 15 A, 15 B, 15. In FIG. 1, the biasing force of the panel 28 via the operation rod 26 acts on the support port 27 to maintain the posture shown in FIG.

Therefore, in the coil winding machine having the movable winding frame 10 having the above configuration, the coil winding is performed as follows. As shown in FIG. 3, the movable winding frame 10 is composed of a fixed winding frame 30 and a fixed winding frame 30 via a gap 35, and the coil winding machine is provided with a As shown in Figs. 5 and 6, A flyer 120 through which ten strips of wire 400 forming bands 401 to 405 are inserted is rotatably provided. Therefore, when the flyer 120 rotates around the winding frame 110 at a high speed, the wire 400 is spirally wound around the descending winding frame 1.

At this time, the movable winding frame 10 of the winding frame 1 is positioned by the operation of the drive mechanism to position the winding frame pieces 15A, 15B, and 15C as follows, and a step is formed. In the present embodiment, three steps corresponding to the U phase, the V phase, and the W phase are given to the steps.

The coil winding machine is provided with an actuator such as a servomotor, and the stroke PAR 13 is configured to perform vertical positioning control by the actuator. That is, the points of the cam grooves 31, 32, 33 are positioned at the heights of the movable pins 21 A, 21 B, 21 C so that the points Ul, VI, W 1. Stroke par 13 is pulled up in order of U-phase, V-phase and W-phase to insert coil into slot. The operation of the drive mechanism will be described using the winding frame piece 15A as an example.

Therefore, for example, when the winding of the U-phase coil is completed, the process proceeds to the coil winding process for the next V-phase. In that case, the stroke par 13 is lifted and temporarily stopped at the position shown in FIG. This is because after winding the U-phase coil, the wound coil must be discharged to the lower coil insertion jig 200 by coil dropping 13 2 as shown in Fig. 6. This is because it is necessary to eliminate the step between the winding pieces 15 A, 15 B and 15 C. Therefore, the winding grooves 31, 32, and 33 have winding pieces 15 A, 15 A between the U-phase and V-phase, V-phase and W-phase points U 1, V 1, W 1. A point is set to retract B, 15 C to eliminate the step.

When the coil release to the coil insertion jig 200 is completed, the rotor pad 13 is subsequently raised. The movable pin 21A relatively descends (see Fig. 4) and moves to the right side of the drawing along the cam groove 31. Then, the racks 22, 22 integrated with the movable pin 21A also move in the same direction, and rotation is applied to the pinion gears 23, 23 engaged with the racks 22, 22. And pinion gear 2 When the rotation is given to 3, 23, the arms 24, 24,... Fixed to the pinion gears 23, 23 and supporting the winding piece 15A are also given rotation. At this time, since the radius of rotation of the mounting pins 25, 25 at the tips is longer than the gear diameter (radius) of the pinion gears 23, 23, the rack 22, which rotates the pinion gears 23, 23, is used. Even if the amount of movement of 22 is small, the amount of movement of the mounting pins 25 in the same direction, that is, the stroke of the winding frame piece 15A can be large. The support openings 27, 27 ... connected to the winding strip 15A are pulled out of the racks 22, 22 via the working rod 26 against the urging force of the panel.

Such an operation is similarly performed on the winding frame pieces 15B and 15C by pulling up the stroke par 13 and moves by a predetermined stroke depending on the shape of the cam grooves 32 and 33, respectively. Then, a wire is wound around the winding frame pieces 15 A, 15 B, 15 C, and a V-phase coil winding is formed on the winding frame 1 with three different circumferential lengths. You. After that, the stroke par 13 is further raised, and as described above, when the step of the winding frame pieces 15A, 15B, and 15C is eliminated, the state is relaxed. Released into tool 200. Then, it is deposited in the coil insertion jig 200 in the same manner as in the state shown in FIG. 8, and is further inserted into a predetermined slot 301 of the stator 300 mounted on the coil insertion jig 200. Enter and transfer.

The coil is formed by the coil winding machine of the present embodiment by stepwise raising the stroke PAR 13 in the order of the U phase, the V phase and the W phase. Then, after the coils of all phases are formed, the stroke par 13 is pushed down again, and the movable pins 21A, 21B, 21C move to the points Ul, 31 of the cam grooves 31, 32, 33. It is returned to the initial state located at U 2, U 3. Therefore, according to the coil winding machine of the present embodiment, the stroke is obtained by the movement of the arms 24, 24,... Crossing the drive mechanism of the movable winding frame 10 of the winding frame 1. Depending on the length of 24 ..., the stroke direction, that is, the small movement (movement of the movable pin 21A and the rack 22) in the projecting direction of the winding pieces 15A, 15B, 15C greatly changes. Output You can. Therefore, the amount of movement of the winding frame pieces 15A, 15B, and 15C for making the coil circumference different without increasing the size of the coil winding machine including the movable winding frame 10, that is, the step stroke. Can be greatly increased.

In addition, since the movement of the movable pin 21 A and the rack 22 is generated by the stroke crapers 13 with the cam grooves 31, 32, 33, the strokes are formed on the stroke craters 13. By changing the shape of the cam groove, it is possible to easily change the amount of movement of the winding frame pieces 15A, 15B, 15C.

The embodiment of the coil winding machine of the present invention has been described above. However, the present invention is not limited thereto, and various modifications can be made without departing from the gist of the present invention.

For example, in the above-described embodiment, the three winding frame pieces 15A, 15B, and 15C are configured to be displaced in correspondence with the three-phase coils. By adding a drive mechanism up to the arm, more reel pieces may be driven.

Claims

Scope of Claim 1. A flyer that rotates while supplying a wire is arranged on a winding frame including a fixed winding frame and a movable winding frame that can be changed in distance from the fixed winding frame in a plurality of stages. Then, the flyer turns while supplying the wire, and the winding frame moves in the direction of the center axis of the turning, whereby the coils are wound on the winding frame in a plurality of stages, and 'coils having different circumferences are formed. In the above-described coil winding machine, the movable winding frame has a driving mechanism for performing expansion and contraction accompanying opening and closing of the crossed arm by giving rotation to the arm through a gear provided integrally therewith. The coil winding machine is characterized in that a winding piece attached to the tip of the arm, on which the coil is wound directly by rotation of the gear, can vary the distance from the fixed winding.

2. A flyer that rotates while supplying a wire is disposed on a winding frame having a fixed winding frame and a movable winding frame capable of changing the distance from the fixed winding frame in a plurality of stages. In a coil winding machine in which the wire is turned while supplying the wire and the winding frame moves in the direction of the center axis of the turning, the coils are wound around the winding frame in a plurality of stages to form coils having different circumferential lengths. The movable bobbin has a stroke par with a cam groove formed corresponding to each step of making the circumference of the coil different, and for each step, a pin penetrating the cam groove sandwiches the stroke par. The rack is fixed to a pair of racks, and each rack is engaged with a pinion gear, and the pinion gear is fixed so that the arms arranged with the stroke bar interposed intersect. Said Yl is 卷枠 piece wound directly, coil 卷線 machine, characterized in that those linked to keep the same orientation with respect to the operation of the arm.

3. The coil winding machine according to claim 2,

The winding frame piece has a long slot formed in a direction orthogonal to a moving direction, A coil winding machine characterized in that a mounting pin fixed to an arm is inserted into an elongated hole thereof and connected so as to maintain the same posture with respect to the operation of the arm.