Resin molding device and method for producing resin molded article

A resin molding device, comprising:

• a lower mold on which a substrate is placed;
• an upper mold in which a cavity is formed by a side block and a cavity block that is provided so as to be capable of ascending and descending vertically with respect to the side block;
• a clamp mechanism, clamping the lower mold and the upper mold;
• a transfer mechanism, supplying a resin material to the cavity by a plunger;
• and
• a controller, sequentially performing a clamping process control, a plunger control, a filling rate correspondence control, a first final adjustment control, and a second final adjustment control,
• wherein the controller performs the clamping process control to provide a first clamp load by clamping the lower mold and the upper mold,
• during a clamp load is maintained at the first clamp load, the controller performs the plunger control with the transfer mechanism by raising the plunger to fill the cavity with a molten resin which leads increasing of a plunger load applied to the plunger,
• when the plunger reaches a predetermined position, the controller performs the filling rate correspondence control, wherein the controller applies the clamp mechanism to raise the first clamp load to a second clamp load, and then stops raising the plunger,
• the first final adjustment control adjusts the clamp load applied by the clamp mechanism to be a final clamp load, which is larger than the second clamp load, in a state where the plunger is stopped, and
• the second final adjustment control adjusts the plunger load applied to the plunger to be a final plunger load, which is a largest load, by raising the plunger in a state where the clamp load is maintained at the final clamp load.