JPS5918852B2 - How to draw out the intermediate tap of an induction coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for drawing out an intermediate tap of an induction coil.

In an induction coil in which a conductor is wound around the outer periphery of a cylindrical winding frame, the method shown in Fig. 1 has conventionally been used to pull out the intermediate tap from the middle of the winding part. The conductor 2 is wound a predetermined number of times around the outer circumference of the wire, and the winding machine is stopped at the intermediate tap drawing position.

After the conductive wire 2 is fixed with the fixing adhesive tape 1 and cut, its tip portion 2a is bent at a right angle and pulled out to the outside. Further, the distal end portion 2b of the conducting wire 2 that is subsequently wound is also bent at right angles and pulled out to the outside to form a tap with the distal end portions 2a and 2b. Next, the conductor 2 is wound successively to the next tap and the tap is drawn out to the outside in the same manner as described above. In this way, a predetermined number of taps are drawn out to form the induction electric coil 5. However, with this method, it is necessary to stop the winding machine for a long time at each tap drawer position.
The disadvantage is that the winding machine has a low operating rate.

Furthermore, automation of the coil winding operation has been carried out up to the tap position10-, but the technical difficulty of the tap drawing process has been an obstacle to partial force reduction. It is an object of the present invention to provide a method for drawing out an intermediate tap of an induction electric coil, which eliminates the above-mentioned drawbacks, improves the operating rate of a winding machine, and is suitable for automating coil winding work.

The present invention will be described below with reference to the embodiments shown in FIGS. 2 and 3.

In FIG. 2, the conducting wire 2 is wound around the outer periphery of the winding frame 3, and an extra conducting wire 2c corresponding to the tap drawing length is wound at the tap drawing position. Subsequently, while rotating the main shaft of the winding machine, a triangular rod-shaped jig (not shown) is inserted, and the conducting wire 2 is wound around the outer periphery of the jig to form the protrusion 4. Next, after winding the extra conducting wire 2d corresponding to the length of the tap to be pulled out, the wire is wound 5 times at a predetermined number of turns until the next tap is pulled out. The above steps are repeated to draw out a predetermined number of taps and the coil winding work is completed. After that, the protruding part 4 is cut with a cutting tool, and as shown in FIG.
2d is rewound, bent at a right angle at the predetermined opening position, pulled out to the outside, and insulation processing is performed all at once. In other words, the circumferential length of the extra-wound conducting wires 2c and 2d is not the same as the length of the tap lead shown in FIG. 3, and a missing turn portion 6 is formed on the coil after the tap lead 5 is drawn out. become. In this case, the extra conductor wire corresponding to the lead length ■52c,
If the winding 2d is wrapped and wound at the tap pull-out position, the missing turn portion 6 will not be formed. In this way, the coil winding work can be carried out continuously even if there is a tap drawer section, thereby improving the operating rate of the winding machine.

Further, since the protruding part of the tap drawer part can be formed by inserting a triangular rod, the coil winding operation can be automated with a simple device. As described above, according to the present invention, it is possible to improve the operating rate of a winding machine and to provide a tap drawing method suitable for automating coil winding work.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a coil for explaining a conventional method for drawing out an intermediate tab, and FIGS. 2 and 3 are perspective views for explaining a method for drawing out an intermediate tab according to the present invention. 1... Adhesive tape, 2, 2a, 2b, 2c, 2
d... Conductor, 3... Winding frame, 4...
...Protruding part of the conductor, 6... Missing turn part.

Claims (1)

[Claims] 1. In a method of winding a conductor around the outer periphery of a cylindrical winding frame and pulling out an intermediate tap from the middle of the winding, the conductor is
At the intermediate tap pull-out position, the coil is made to protrude outward to the extent that a cutting tool can be inserted, and additional windings are made before and after this protrusion corresponding to the intermediate tap pull-out length, and after the coil is formed, the protrusion is cut. A method for drawing out an intermediate tap of an induction electric coil, characterized in that the extra wound conductive wire portion is drawn out to the outside to form an intermediate tap.