The ingot storage device sends the rigid (flexible) ingot rods from the storage mechanism to the pulling machine, or accepts the ingot rods from the pulling machine to return to the storage mechanism. It also has the function of storing the spindle. There are many forms of ingot storage. According to the different types of spindles, corresponding types of spindles are equipped for storage.

According to different use requirements, the spindle can choose rigid spindle or flexible spindle.