Will the winding machine quality of winding machine manufacturer affect the quality of transformer coil?

Transformer is generally composed of iron core, coil, shell and necessary insulating materials. The coils of transformers are generally divided into high-voltage coils and low-voltage coils. The high-voltage coils are generally wound with round insulated wires, and the low-voltage coils are generally wound with flat insulated wires or foils. The winding of transformer coil is the core process of transformer manufacturing, which has great influence on the performance of transformer. It not only directly determines the main economic and technical indicators such as the overall size, loss and weight of the transformer, but also directly affects the main quality indicators such as the mechanical properties, insulation properties and heat resistance of the transformer. The traditional winding of transformer coil depends on manpower to wind the insulated conductor on the workpiece according to the production process requirements, and the operator counts the resistance. Using traditional winding method, not only the winding efficiency is low, but also the quality of finished coil is poor. At present, automatic winding machine is widely used for winding transformer coils, which can significantly improve production efficiency and wire arrangement accuracy. Among the automatic winding machines, there are vertical winding machines for winding large transformers, horizontal winding machines and foil winding machines for winding transformers with lower voltage level and smaller capacity.

When the current value related to the tension of the vertical winding machine is set to 0.45A, it is found during the winding process that the force on the wire coil is uneven due to the small tension, and when the wire coil rotates, due to the phenomenon that the inertia wire coil idles, the wire between the wire coil and the wire clamper is not in an ideal horizontal state, but hangs a certain arc, so that the force on the wire coil is uneven during the winding process, and the compactness of the wound wire cake is not enough, which leads to the size of the coil B being larger than the technology.

Analysis of the relationship between winding machine tension and coil size of winding machine manufacturers: (1) The influence of properly increasing winding machine tension on the coil. In the process of winding the coil, the tension is gradually increased, and the tension-related current value of the vertical winding machine is adjusted to 0.46A, so that the coil is relaxed. The phenomenon of large size has been improved, but it still does not meet the requirements.

Under normal operation, the temperature of carbon brushes is generally 50℃ ~ 80℃ (temperature rise is about 40℃), and the working current of each carbon brush is 20 a ~ 100 a. The spring pressure of the brush holder is relatively uniform, and the carbon brush can move freely without vibration. The heat generated during the operation of carbon brushes and slip rings is taken away by the ventilation system. That is, heating and heat dissipation reach a basic balance. However, when the carbon brush becomes shorter, the contact resistance and additional resistance become larger, and the pressure of the brush spring becomes smaller, if the working current increases, the balance ability of the system will decrease when the temperature changes, and the temperature of some carbon brushes will increase, thus the temperature of the whole system will increase.

Winding machine manufacturers' winding machines are widely used in electric power, mining machinery, furniture processing and other industries, and are general equipment. Through the call to the production site of winding machine enterprises, most of the ring winding machines in use at present have great security risks. Once improperly operated, not only the winding will be invalid, but also people's fingers may be seriously injured. In order to reduce the rejection rate of windings and increase the safety of wings, it is very necessary to add a protective device for winding machines.

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