Grooved drum of winding machine

The utility model relates to a grooved drum of a winding machine, which comprises a stainless steel drum body made though precision casting and a core shaft arranged inside the drum body, the core shaft is formed by a section of stainless steel shaft drum and aluminum alloy core frames sleeved at two ends of the shaft drum, each aluminum alloy core frame comprises a circular ring-shaped sleeve inserted into the shaft drum and a plurality of supporting feet evenly distributed and arranged on the circular ring-shaped sleeve. The utility model adopts the steel drum body; therefore, the service life and the manufacturing cost of the grooved drum are greatly improved; compared with the original products, the service life of the grooved drum is 4 to 5 times of that of the original products; in addition, the core shaft inside adopts the structure of combining the stainless steel hollow sleeve with the aluminum alloy core frame, so that the weight of the product is greatly reduced, and the grooved drum overcomes the