Electric hollow molding machine

An electric hollow molding machine comprising:

• a base;
• a mold device mounted to said base and including left and right molds, and two operating arms spaced apart from each other and connected respectively to said left and right molds, said operating arms moving said left and right molds toward each other to a mold closing position, or away from each other to a mold opening position;
• a drive unit proximate to said base and including a power source, a drive shaft unit driven by said power source to rotate, and an electromagnetic brake for stopping rotation of said drive shaft unit;
• a movable seat including front and rear plates spaced apart from each other to confine a receiving chamber therebetween, and two first mounting sections connected respectively to outer sides of said front and rear plates to mount pivotally one of said operating arms to said movable seat;
• a threaded rod disposed within said receiving chamber and rotated by said drive shaft unit;
• a first transmission unit including a sleeve disposed around said threaded rod and moved leftward or rightward by said threaded rod, and a first transmission seat fixed around said sleeve and movable along therewith;
• and
• a second transmission unit movable leftward and rightward along with said first transmission unit and including a second transmission seat disposed around said sleeve and on one side of said first transmission seat and cooperating with said first transmission seat to define therebetween a damping space, and a damping element disposed within said damping space;
• said second transmission unit further including at least one connecting shaft having one end connected to said second transmission seat and another end extending out of said movable seat, and a second mounting section connected to said another end of said connecting shaft to mount pivotally the other one of said operating arms to said connecting shaft;
• wherein, when said movable seat and said second transmission unit move telescopically relative to each other, said operating arms move said left and right molds toward or away from each other to the mold closing or opening position.