JPH0548195U - Coil winding equipment - Google Patents

Abstract

(57) [Summary] [Purpose] It is easy to insert the wire into the coil winding gap of the coil mold by appropriately moving the wire nozzle when winding the wire. When the coil die 10 is rotated and the electric wire 8 supplied from an electric wire nozzle 50 is wound around a coil winding gap S formed in the coil die 10 and is wound, the coil die 10 is synchronized with the rotation of the coil die 10. Then, the electric wire nozzle 50 is moved by the nozzle moving means 52 composed of, for example, a robot having six degrees of freedom. As a result, the contact between the coil mold 10 and the electric wire 8 is reduced, the generated frictional resistance is reduced as much as possible, and as a result, the rotational speed of the coil mold 10 can be increased. Further, it becomes possible to produce a coil having stable characteristics.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coil winding device, and more particularly to a coil winding device that forms a coil having a complicated shape such as a saddle coil for a deflection coil.

[0002]

[Prior Art]

 Generally, when manufacturing a coil, a coil mold that can be disassembled is rotated and an electric wire is wound around it, and if the coil is wound a specified number of times, the mold is disassembled and the coil is taken out. It has become. By the way, when manufacturing a coil having a complicated shape such as a saddle type coil for a deflection yoke used in a television receiver or the like, the coil mold becomes complicated corresponding to the complicated shape. ..

For example, a conventional coil winding device for forming a saddle coil for a deflection yoke will be described as an example. As shown in FIG. 3, this coil winding device 2 is a rotatable coil winding device 2. It has one disc-shaped plate, that is, an upper convex face plate 4 (shown by a chain line) and a lower concave face plate 6, and as shown in FIGS. A saddle-shaped coil mold 10 for winding the electric wire 8 is provided on the. The coil mold 10 has a convex mold part 14 having a convex part 12 which is a coil forming part protruding downward in a saddle shape as shown in the figure, and a slight gap from the convex part 12. It is mainly formed by a concave mold portion 18 having a concave portion 16 which is a coil forming portion fitted with a coil winding gap S interposed therebetween, and these have a structure capable of being divided into two in the rotation axis direction. Has been done.

An abutting portion 20 which is projected upward is formed at the center of the concave die portion 18, and the abutting portion 20 is brought into contact with the convex die portion 14. As a result, the coil winding gap S is formed between the two mold parts 14 and 18, and by winding the electric wire in the gap S, the coil 22 is formed as described later. Further, guide portions 19, 19 for guiding the electric wire to the gap S are formed at both ends of the convex portion 12 of the convex mold portion 14 and both upper ends of the concave mold portion 18 outside the concave portion 16. And guide the winding of electric wires. The convex mold part 14 of the coil mold 10 as described above is attached and fixed to the central part of the convex face plate 4 while the concave mold part 18 is attached to the central part of the concave face plate 6. Be done.

On the inner side surface of the convex face plate 4, an S-shape is formed as a whole for guiding the electric wire 8 to both ends of the convex mold portion 14 located at the rotation center when the electric wire is wound. The upper guide rail 24 is attached. The thickness of the upper guide rail 24 is gradually increased from the peripheral portion of the plate 4 toward the central portion thereof. When the upper guide rail 24 is rotated, the upper guide rail 24 is contacted with the surface of the plate 4 to cause friction, and is supplied from the fixing nozzle 25. The electric wire 8 to be guided is guided to both ends of the convex mold portion 18. Similarly, on the inner surface of the concave face plate 6, a lower guide rail 26 having a generally S-shape is attached for guiding the electric wire 8 to both ends of the concave mold portion 18. There is. The lower guide rail 26 is arranged so as to intersect the upper guide rail 24 at a substantially right angle in the central portion thereof, and its thickness is gradually increased from the peripheral portion of the plate 6 toward the central portion thereof. Is enlarged and smoothly connected to each guide portion of the coil mold. Therefore, when rotating, the electric wire 8 is guided to both ends of the concave mold portion 18 while making contact with the surface of the guide rail 26 to cause friction.

As shown in FIG. 6, the electric wire supply system 28 for supplying the electric wire 8 to the coil mold 10 includes an electric wire supply source (not shown) and a braking means or the like for applying a predetermined tension to the electric wire 8 from now on. A tension part 30 composed of a plurality of pulleys provided with a plurality of pulleys, and a damper 32 composed of a plurality of pulleys in which an electric wire is hung in an S-shape to absorb fluctuations in tension and a part of which is supported by an elastic member. The back tension part 38 is provided immediately before the fixed nozzle 25 to apply a predetermined tension to the electric wire 8 wound around the coil mold 10 and pulls the back tension pulley 36 by the elastic member 34. It is mainly composed of and.

[0007]

[Problems to be solved by the device]

 A method of winding an electric wire, which is performed by the coil winding device configured as described above, will be described. 7A to 7D show a state in which the coil mold 10 makes one rotation, and the electric wire supplied from the electric wire supply system 28 through the fixed nozzle 25 in accordance with the rotation of the coil mold 10. 8 is guided by the upper and lower guide rails 24 and 26 and the guide portion, and is successively wound and wound in the coil winding gap S of the coil mold 10. Also, in the coil forming portion, since the electric wire is wound from the inner side of the coil winding gap S, it plays the same role as each of the guide rails during winding. During such a winding operation, at the rotation angles shown in FIGS. 7A and 7C, the electric wire 8 is formed in the lower guide rail 26 of the concave face plate 6 and the concave mold portion 18. It is gradually lifted upward by the guide portion 19 in accordance with the rotation, and then, in the process of rotating as shown in FIG. 7 (B) or FIG. 7 (D), between the convex mold portion 14 and the concave mold portion 18. It falls into the formed coil winding gap S.

Therefore, the electric wire 8 is longer than the electric wire length that actually enters the gap S by the amount of the electric wire 8 lifted as described above, and the electric wire 8 is pulled out more than necessary. When the wire falls, the tension of the wire decreases and the speed of the wire trying to fall into the gap S also decreases, causing a slack wire. Further, as shown in both guide rails 24 and 26 and in FIG. 8, both mold parts 14 and 18 respectively come into contact with the electric wire 8 to generate frictional resistance at the contact part F, and the drop speed further decreases. Tend to do. Therefore, in order to prevent this phenomenon, that is, the drop in the wire tension and the drop rate, a back tension portion 38 is provided on the inlet side of the fixed nozzle 25 as shown in FIG. Is becoming

However, there is a limit to the number of rotations of the coil mold 10 that can pull back an extra electric wire by the back tension part 38 of this kind, and the coil winding gap S of the coil mold 10 is deepened. There was a problem that the electric wire portion 8A that was not sufficiently caught up was generated. In particular, this type of problem becomes more prominent as the coil die 10 rotates at a higher speed, so the rotational speed of the coil die cannot be increased sufficiently, and the coil production efficiency is improved. There was a problem of lowering it. Furthermore, in the conventional coil winding device, large-diameter face plates 4 and 6 to which both guide rails 24 and 26 are attached must be provided on the outside of the coil mold 10, and the entire device is Not only is there a disadvantage that the radius of gyration becomes large and the occupied area increases, but there is also the disadvantage that the overall weight increases and the responsiveness of rotation acceleration / deceleration is poor. The present invention has been devised in order to effectively solve the above problems. An object of the present invention is to provide a coil winding device capable of easily moving an electric wire into a coil winding gap of a coil mold by appropriately moving an electric wire nozzle when winding an electric wire.

[0010]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is to rotate a coil mold that can be disassembled and to supply an electric wire from a wire nozzle to a coil winding gap formed in the coil mold. A coil winding device for winding a coil to form a coil is provided with a nozzle moving means for moving the electric wire nozzle in synchronization with the rotation of the coil mold.

[0011]

[Action]

 Since the present invention is configured as described above, when the electric wire is wound in the coil winding gap while rotating the coil mold, the noise moving means synchronizes the rotation of the coil mold with the electric wire. The electric wire nozzle is appropriately moved so that the frictional resistance generated between the electric wire and the coil mold during winding becomes small. As a result, the frictional resistance generated between the wire and the coil mold when the wire is wound is greatly reduced, and it becomes easier for the wire to enter the coil winding gap, and as a result, the rotational speed of the coil mold can be increased. it can.

[0012]

【Example】

 An embodiment of the coil winding device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a coil winding device according to the present invention. The same parts as those of the conventional device are designated by the same reference numerals. As shown in the drawing, this coil winding device has a coil mold 10 that is made disassembleable and forms, for example, a saddle-type coil for a deflection yoke. As shown in FIG. 4, a convex mold portion 14 having a convex portion 12 that is a coil forming portion that protrudes downward in a saddle shape, and a coil winding gap S that is a slight gap from the convex portion 12 are provided. It is mainly formed of a concave metal mold portion 18 having a concave portion 16 which is a fitted coil forming portion, and these have a structure capable of being divided into two in the rotational axis direction.

Further, an abutting portion 20 protruding upward is formed at the center of the concave die portion 18, and the abutting portion 20 is brought into contact with the convex die portion 14. As a result, the coil winding gap S is formed between the two mold parts 14 and 18, and by winding the electric wire in the gap S, the coil 22 is formed as described later. Further, guide portions 19, 19 for guiding the electric wire to the gap S are formed at both ends of the convex portion 12 of the convex mold portion 14 and both upper ends of the concave mold portion 18 outside the concave portion 16. And guide the winding of electric wires.

A rotary pulley 40 rotatably supported by a rotary shaft (not shown) is directly attached and fixed to the concave mold portion 18 on the lower side of the coil mold 10 thus formed. On the side of the coil mold 10, a main shaft motor 42 such as a step motor is installed in parallel as a drive source, and a drive pulley 44 is attached and fixed to the drive shaft. A power transmission means, for example, a timing belt 46 is stretched between the drive pulley 44 and the rotary pulley 40 so that the main shaft motor 42 can rotate the entire coil mold 10. It is configured.

On the other hand, an electric wire supply system for supplying the power source 8 to the coil mold 10 has a structure similar to that shown in FIG. That is, the electric wire supply system 28 absorbs fluctuations in tension, not shown, an electric wire supply source, a tension section 30 composed of a plurality of pulleys provided with braking means for applying a predetermined tension to the electric wire 8 from now on. In order to apply a predetermined tension to the electric wire 8 wound around the mold 10 and the damper 32, which is composed of a plurality of pulleys partially supported by the elastic member, the electric wire is hung over in an S shape. The back tension portion 36 is provided immediately before the fixed nozzle 25 and is mainly configured by a back tension portion 38 configured to pull the back tension pulley 36 by the elastic member 34.

An electric wire nozzle 50 for supplying the electric wire 8 is provided between the electric wire discharge side of the power supply system 28 and the coil mold 10. The electric wire nozzle 50 has, for example, a crank mechanism, a cam mechanism, a gear mechanism, a ball screw and a servo so as to have an operation of at least one degree of freedom or more by a nozzle moving means 52 composed of a traverse robot, which is a feature of the present invention. It is configured by appropriately combining motors and the like, and for example, in this embodiment, four degrees of freedom in the direction of the electric wire nozzle 50, the horizontal direction (X direction), the front-back direction (Y direction), and the vertical direction (Z direction) are provided. Is configured to have. As this type of traverse robot, for example, a commercially available robot device having 6-axis degrees of freedom can be used. The nozzle moving means 52 is connected to a control unit 54, which is composed of, for example, a computer capable of teaching or programming in order to control the position and moving speed of the nozzle motor 52 in synchronization with the main shaft motor 42. The electric wire nozzle 50 has a different operation pattern depending on the shape of the coil 22 to be formed (see FIG. 5) or the shape of the coil mold 10, and the operation pattern of the electric wire 8 and the coil mold 10 during winding of the electric wire is different. The operation pattern is determined so that the frictional resistance generated between them is reduced, and such an operation pattern is programmed.

Next, the operation of this embodiment configured as described above will be described. First, by rotating the main spindle motor 42 in a state where the convex mold portion 14 and the concave mold portion 18 of the coil mold 10 are connected by the fixing pin 56, the driving force thereof is rotated via the timing belt 46. The coil mold 10 is transmitted by being transmitted to the pulley 40. At the same time, the electric wire 8 supplied from an electric wire supply source (not shown) is in a state in which a predetermined tension is applied via the tension part 30, the damper part 32, the back tension part 36 (see FIG. 6) and the electric wire nozzle 50. It is sequentially drawn out, accommodated in the coil winding space S formed at the center of the coil mold 10 and wound, and wound.

At the time of this winding operation, in this embodiment, the electric wire nozzle 50 is controlled by the nozzle moving means 52 of the traverse robot so that the frictional resistance generated between the electric wire nozzle 50 and the coil mold 10 is reduced. By 54, it is reciprocally moved in the X, Y, and Z directions in synchronism with the spindle motor 42, and the orientation of the nozzle is also changed in synchronism with each other. Therefore, since the frictional resistance of the electric wire 8 is reduced, the electric wire 8 easily enters the coil winding gap S. For example, the movement of the electric wire nozzle 50 in the vertical direction, that is, the Z direction will be described as an example. FIG. 2 is a graph showing the vertical movement of the wire nozzle 50 when the coil mold 10 rotates once. In the drawing, it is assumed that the lower end of the long locking plate 60 among the locking plates at both ends of the convex mold part 14 in FIG. 5 is the starting point P1 and the plate rotates in the right direction in the drawing. First, at the starting point P1, the electric wire nozzle 50 is located below by the length L1 of the long locking plate 60 of the convex mold portion 14 and gradually rises in accordance with the rotation, so that the convex mold 14 and the concave mold portion 18 are separated. The vertical joint rapidly rises near the rotation angle of about 45 ° facing the electric wire nozzle 50, and when the rotation angle reaches about 90 °, the electric wire nozzle 50 is guided to the guide portion of the concave mold portion 18. It peaks at a height L2 of 19 above.

After that, the electric wire nozzle 50 is gradually lowered in accordance with the rotation, and when the rotation angle becomes approximately 180 °, the electric wire nozzle 50 is positioned below by the length L3 of the short locking plate 62 of the convex mold part 14. Further, when the electric wire nozzle 50 is gradually raised again according to the rotation and the rotation angle becomes approximately 270 °, the electric wire nozzle 50 is again positioned upward by the height L2 of the guide portion 19, and thereafter, according to the rotation, The long locking plate 60 of the convex mold part 14 is again positioned downward by the length L 1. Such movement of the electric wire nozzle in the Z direction is repeated according to the rotation of the coil mold 10. Then, in synchronization with the movement in the Z direction, the electric wire nozzle 50 is moved in the X direction and the Y direction so as to reduce friction with the coil mold 10, and at the same time, the nozzle direction is also changed. To be done.

By thus moving the electric wire nozzle 50 in synchronism with the rotation of the coil mold 10 to reduce the frictional resistance of the electric wire and improve the entry of the electric wire, the rotational speed of the coil mold itself is reduced. Even if it is raised, it is possible to obtain the coil 22 that is properly wound. In addition, it becomes possible to eliminate the face plate and guide rails required in the conventional device. Moreover, since these are unnecessary, the weight of the rotating body can be significantly reduced, the inertial force is reduced, and the responsiveness of the acceleration / deceleration of the rotation of the coil mold 10 can be improved. In addition, in the above embodiment, the case where the saddle type coil is formed has been described, but the present invention is not limited to this shape, and the present invention can be applied to coils of any shape. The operation pattern for reducing the frictional resistance is programmed by the controller.

[0021]

[Effect of the device]

 As described above, according to the present invention, the following excellent operational effects can be exhibited. Since the electric wire nozzle is moved in synchronism with the rotation of the coil mold, it is possible to eliminate the previously required guide rails, etc. Therefore, no extra electric wire is pulled out, and the electric wire is not pulled out. The frictional resistance of can be greatly reduced. Therefore, the electric wire can easily enter the coil winding gap, and the rotation speed of the coil mold can be increased, so that the production efficiency can be significantly improved without causing a slack wire, and the coil characteristics can be improved. Variations can be reduced. In addition, since the guide rails and the like can be eliminated, not only can the weight be reduced and the response of acceleration / deceleration when rotating the coil mold can be improved, but also the radius of rotation can be reduced to occupy the area of the device itself. Can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a coil winding device according to the present invention.

FIG. 2 is a graph showing a schematic movement of a wire nozzle of a coil winding device in a Z direction.

FIG. 3 is a perspective view showing a conventional coil winding device.

FIG. 4 is a perspective view showing an assembly view of a general coil mold used in a coil winding device.

5 is an exploded view of the coil mold shown in FIG.

FIG. 6 is a schematic configuration diagram showing an electric wire supply system of the coil winding device.

FIG. 7 is an explanatory diagram for explaining a winding state of an electric wire by a conventional coil winding device.

FIG. 8 is an explanatory diagram for explaining a problem of a winding state of a conventional electric wire.

[Explanation of symbols]

2 ... Coil winding device, 4 ... Convex face plate, 6 ...
Concave face plate, 8 ... electric wire, 10 ... coil mold,
14 ... Convex mold part, 18 ... Concave mold part, 22 ... Coil,
24 ... Upper guide rail, 25 ... Fixed nozzle, 26 ... Lower guide rail, 28 ... Electric wire supply system, 42 ... Main shaft motor, 50 ... Electric wire nozzle, 52 ... Nozzle driving means, 54 ...
Control part, P1 ... Origin, S ... Coil winding gap.

Claims (1)

[Scope of utility model registration request] 1. A coil winding device for forming a coil by winding an electric wire supplied from an electric wire nozzle into a coil winding gap formed in the coil mold while rotating a coil mold which can be disassembled. A coil winding device, characterized in that it is provided with a nozzle moving means for moving the electric wire nozzle in synchronization with the rotation of the coil mold.