Automatic insulating tape wrapping apparatus

In apparatus for wrapping an insulating tape about an electric coil including a straight portion and a curved portion, movements of a head carrying a coil of the insulating tape along the electric coil, rotation of the head about the electric coil, and swinging of the head are effected by independent electric motors. Pulses representing the speeds of respective motors are inputted into a microcomputer which supplies speed instructions to the motors to rotate them at speeds suitable for sections of the electric coil having different shapes, thus synchronously operating the motors.

I claim:

1. An automatic insulating tape wrapping apparatus for wrapping an insulating tape about an electric coil dividable into a plurality of sections and including a curved portion, comprising:

a tape wrapping head including a rotating ring carrying said insulating tape;

first drive means for rotating said head about said coil;

second drive means for moving said head straight along said coil;

third drive means for swinging said head about an axis perpendicular to a straight movement of said head;

a plurality of speed detectors respectively driven by said first, second and third drive means for feeding back speed signals to said first, second and third drive means respectively, and

arithmetic operation means for driving said second drive means at predetermined speeds in respective sections and for driving said third drive means for swinging said head at a predetermined speed and for a predtermined angle.

2. The apparatus according to claim 1 which further comprises fourth drive means for moving said head in a direction perpendicular to a direction of movement caused by said second drive means.

3. The apparatus according to claim 1 or 2 which further comprises a plurality of drive circuits connected between said arithmetic operation means and said drive means for controlling speeds thereof in accordance with speed instructions delivered by said arithmetic operation means.

4. The apparatus according to claim 2 wherein said second and fourth drive means are provided with pulse generators for producing pulses which are supplied to said arithmetic operation means.

5. The apparatus according to claim 1 which further comprises a gate circuit connected between said third drive means and said arithmetic operation means, and a rotational position detector driven by said third drive means for controlling said gate circuit.

6. The apparatus according to claim 2 which further comprises pulse generators respectively driven by said first to fourth drive means, and a plurality of counters respectively counting numbers of pulses generated by said pulse generators for modifying speed instructions delivered from said arithmetic calculating means to said first to fourth drive means.

7. The apparatus according to claim 2, which further comprises an additional speed detector driven by said fourth drive means for feeding back a speed signal to said fourth drive means.