Tensioner manufacturer said the second dynamic mode on the screw is connected to the screw, the other end of this screw rotates while connected to the fixed mold, and a manual wheel is connected at the driving end of the screw. Tensioner specifications beneficial effect: molten metal liquid enters the cavity through the hole on the fixed mode, the molten metal liquid is cured by pressure, and after forming the workpiece, the heavy-duty tensioner worm drives the screw to rotate, the screw is fixed axially, the second motion die causes the screw to move axially, pushing the second motion mode to move, and the hook is under the restrictor block, and the hook of the hook and the shoulder on the second motion mode are closely adhered to together.