Controller and control method for rotary compression-molding machine

A rotary compression-molding machine, comprising:

• a turret including a table including a die bore;
• punch retaining portions vertically slidably retaining punches disposed above and below the die bore along with the punches;
• and
• a controller configured to rotate the turret and the punch retaining portions to fill the die bore with a powdery material from a filling device, disposed just above the table, to compress the powdery material filled in the die bore with the punches, and to obtain a molded product,
• wherein the controller is further configured to adjust a rotational speed of the turret and the punches to allow the powdery material in a feed pipe, directly connected to the filling device and to the filling device with the powdery material, or in the filling device to have a level of an upper surface kept within a target range,
• wherein the controller is further configured to control the rotational speed of the turret and the punches such that a first period of an increase in the rotational speed is shorter than a subsequent second period of the increase in the rotational speed, and
• wherein the controller is further configured to control the rotational speed of the turret and the punches such that a first period of a decrease in the rotational speed is shorter than a subsequent second period of the decrease in the rotational speed.