Ball foming machine is special equipment such as cement, chemical industry. Its character is: the one into a ball machine spindle, the spindle through the bearing connection on the shaft bracket, the upper main shaft connected with cone umbrella rotor, shaft, cone umbrella rotor connected with stent, in support of the upper connection with hopper, holder is connected with agitator, return feeder, ball material, at the bottom of the bracket connected with belt conveyor and hopper ball storehouse. Into a ball machine is mainly used for pressing hard to molding powder material, its characteristic is the molding pressure, main engine RPM adjustable, with a spiral feeding device. Host powered by electromagnetic speed regulating motor, the pulley, cylindrical gear reducer, through the rod to drive shaft pin coupling. Driving shaft and driven shaft through the open gear ensure synchronous operation. Behind passive bearing seat is equipped with hydraulic equipment. Spiral feed unit driven by electromagnetic speed regulating motor, turn the pulley, worm reducer, pressure material will be forced into the inlet pressure. Due to electromagnetic speed regulating motor constant torque characteristic, when the pressure of the spiral feeder shoes and equals the quantity of thematerials needed by the host, can maintain a constant feed pressure make the pellet quality is stable. As for the shoes is too big, feeding device electrical overload; For shoes is too small, no ball. Thus the skilled operation skill is vital to guarantee the normal work of the ball. Hydraulic pressure protection device is composed of hydraulic pump highpressure oil into the hydraulic cylinder, the piston to produce axial displacement. Before pick up the top of the head of the piston rod on the bearing pressure to meet the production requirements. When between two roller feeding into the metal, or too much of the hydraulic cylinder piston rod pressure overload, hydraulic pump will stop buffer effect to the pressure change, accumulator, overflow valve open back to oil, the piston rod shift between the roller gap increased so hard objects through the roller, the system pressure returned to normal, can protect the roller damage. The machine can adjust the pressure according to the requirement of the pressure ball density, flexible production.