In the realm of motor manufacturing, the traditional method of crafting rotor cores involved die-cutting and stacking formed steel sheets. However, this process resulted in excessive material consumption and subpar efficiency. As the stamping industry evolves towards high-efficiency automation, the conventional single-punch technique has gradually given way to innovative continuous stamping methods for coil materials. Nevertheless, the current practice of continuous stamping for rotor cores relies primarily on a single-head decoiler for material feeding and uncoiling. While this facilitates automated production, it also introduces substantial downtime for material changeovers and adjustments after each coil is depleted, severely hampering overall production efficiency.
To combat the challenge of low production efficiency in the manufacturing of toothed laminations for rotor cores, a revolutionary solution has emerged – the dual-head decoiler, integrated into a high-speed rotor core stamping production line. This cutting-edge dual-head decoiler boasts two operational stations: one dedicated to material feeding and uncoiling, and the other simultaneously preparing the next coil for action. When the material at the uncoiling station runs out, the dual-head decoiler swiftly rotates 180 degrees to switch to the other operational station, significantly boosting individual machine efficiency. This ingenious configuration enables uninterrupted operation of the high-speed stamping production line, delivering compelling advantages such as material savings and heightened production efficiency.
In practical applications, toothed strip materials, previously punched by the high-speed press, are introduced into the feed trough, consisting of upper guide plates, material support tiles, and lower guide plates, by the dual-head decoiler. Notably, the teeth of the strip material face outward. The precise thickness of the support tiles guarantees that the toothed strip material maintains its flatness as it passes through the feed trough. During the winding process, a driving pin is pre-inserted into the toothed slot of the strip material, just ahead of the tangent position. The decoiler motor then initiates the strip material’s forward movement, while various driving pins sequentially insert and propel the toothed strip material forward under the influence of the extension pin cam. As the strip material is fully wound, it reaches the winding exit, where, guided by the spiral surface of the guide cam, it is smoothly led out and wound onto the decoiler spindle, ultimately forming laminations for the rotor core. At this juncture, the decoiler driving pins are retracted in concert with the guide cam and springs, facilitating continuous winding operations and elevating work efficiency.
The dual-head decoiler, celebrated for its unwavering reliability and its ability to ensure the flatness and seamless progression of strip material, stands as a practical material feeding and uncoiling device in the realm of rotor core production. With this innovative technology, manufacturers can bid farewell to inefficiencies, ushering in a new era of streamlined and productive rotor core production processes.