A kind of coil preparation method

Abstract

The invention discloses a preparation method of a coil.The preparation method comprises the following steps that 1, varnished wires are prefabricated; 2, pressing is carried out; 3, winding is carried out, wherein one end of each winding varnished wire prepared in the step 2 is fixed, and the varnished wires are stacked along the bottom of an iron core towards the end to form an innermost layer; after the innermost layer is wound, the varnished wires are successively stacked from the end of the iron core to the bottom to form a middle layer, and winding is repeated many times, and an outermost layer is formed; arc portions on the side faces of the left and right adjacent varnished wires in the radial direction of the iron core make contact with each other, the flat parts of the upper and lower surfaces of the upper and lower adjacent varnished wires in the axial direction of the iron core make contact with each other, and gaps are formed between the middle positions of the four adjacent winding varnished wires from the view of cross section; 4, the two ends of the winding varnished wires are provided with line outgoing terminals, and the coil is prepared.According to the contact way, from the view of the cross section, the gaps are formed between the middle positions of the four adjacent winding varnished wires, and the heat dissipation efficiency of the coil is further improved.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a coil preparation method for insulated coil windings in reactors, transformers and motors. Background technique [0002] Enameled wire is a main variety of winding wire, which is composed of conductor and insulating layer. After the bare wire is annealed and softened, it is painted and baked many times. However, it is not easy to produce products that meet both standard requirements and customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and the environment. Therefore, the quality characteristics of various enameled wires are different, but they all have Mechanical properties, chemical properties, electrical properties, thermal properties four major properties. [0003] Enameled wire is the main raw material of products such as motors, electrical appliances and household appliances. Especially in recent yea...

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Problems solved by technology

[0005] One of the most important reasons for the above embarrassing situation is that the heat dissipation effect of the winding group is not good, and the paint is easy to fall off after a long time of use, reducing the performance of the product or even completely unusable; therefore, it is necessary to develop a new winding

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