From the transformer winding structure design point of view, not all the coils can be used vertical winding machine production. Such as the layered structure, multi-helix coil structure. If this coil using ordinary horizontal winding machine around, the axial pressure without any winding system, the line gap is large, like a compression spring. Coil after the compression diameter becomes larger, the gap between the coil and the paper tube will cause the coil axial instability, in case of axial force, the coil may cause damage. Therefore, with axial, radial compression horizontal winding machine, coil in the production of large-scale, has been widely used. With the transformer performance requirements are getting higher and higher, the general production of small and medium-sized transformers, but also gradually began to use compressed horizontal winding machine.
In order to more accurately control the pressing force, the original compression mechanism used torque motor or cylinder pressure, has now been replaced by a servo motor. In order to control the winding coil size tolerances, increase the grating ruler, on-line detection of coil size. According to the length of the winding coil, the follow-up trolley follows the track to avoid the new stress caused by the twisting deformation of the wire and reduce the eddy current loss of the winding.