The low-speed automatic winding machine is mainly composed of a frame, a winding spindle mechanism, a wire arranging mechanism, a winding fixture, a tension mechanism and a control system. The winding machine adopts the inverter to control the motor as the driving force, which effectively ensures the stable control of the inverter under the low speed state.
The connection between the coil positioning base and the automatic coil was changed. After the motor is replaced, the positioning base is redesigned to ensure the firmness of the connection between the coil positioning base and the motor end face, and the end face is flat, which avoids the situation that the automatic coil can not effectively brake after the automatic coil connection; at the same time, the automatic is also guaranteed. The stability of the coil operation. Design and manufacture the main motor connection sleeve. In order to ensure the concentricity of the winding machine main shaft and the motor connecting sleeve, to avoid the unstable operation caused by friction, the connecting sleeve and the tapered pin connection are designed and assembled, and the brake resistance piece, the brake pad and the synchronous pulley are assembled.
The structure of the specific winding machine includes the following:
1. Winding machine spindle mechanism
The winding machine is driven by a three-phase asynchronous motor to drive the timing belt and the transmission shaft. This ensures that the rotation of the spindles on both sides of the winding is constant speed and synchronized. Through assembly, the assembly precision is improved, thereby ensuring the concentricity and winding quality of the wire mold.
2, Tension mechanism
When winding fine enameled wire and precious metal alloy filament, if the wire diameter is small, if the tension is too large, the wire will be broken or the wire will be elongated, and the DC resistance of the coil will be increased; if the tension is too small, the wire will be disordered. Phenomenon, reducing the quality of the wound. Since the line tensioning device of the device is fixed on the ball screw rod, the tension is controlled by the felt pressing method. In the actual production process, the tension device can be added in the important process to control the tension, ensure that the cable is neat, no pressure stack, no looseness, and the fine adjustment can fully meet the requirements of different wire diameters.
3, Cable mechanism
The wire arranging mechanism generally adopts a stepping motor as a driving source of the wire arranging mechanism of the low speed winding machine, and mainly adopts a stepping motor to drive the ball screw rotating through the synchronous toothed belt or to rotate the ball screw by the coupling. That is, the stepping motor drives the ball screw to rotate through the synchronous toothed belt. Since the flexible connection between the ball screw and the stepping motor shaft is adopted, the requirements for the positioning surface of the stepping motor base and the assembly requirements of the ball screw and the guide rod are also reduced accordingly. In order to meet the design requirements, the composite cable method has been used to improve the cable arranging mechanism. The commutation control of the cable mechanism is the key to controlling the quality of the wound coil. In the design, the speed and time of the asynchronous motor in the commutation can be controlled by software, so that it will not cause crushing or looseness.