A system for taking out a molded product, comprising: a vacuum sucker including a suction member operable to suck up a molded product, a vacuum generator connected to the suction member via a pipe to apply a vacuum pressure to the suction member, a pressure valve provided in the pipe between the vacuum generator and the suction member to allow and block communication between the vacuum generator and the suction member, and a pressure detector operable to detect a pressure in the pipe between the pressure valve and the suction member; a moving mechanism operable to move the suction member to transport the molded product to a release position after the molded product is pushed out of a mold of a molding machine by an ejector pin and sucked up by the suction member and then taken out; and a controller configured to execute operation control for the vacuum generator and the pressure valve and movement control for the moving mechanism, the controller being configured to start operation of the suction member to suck up the molded product after the pressure in the pipe reaches a predetermined pressure before the suction member sucks up the molded product, concurrently with the movement control for the moving mechanism, characterize in that: the controller includes a time interval measuring section configured to measure a stable time interval since the pressure in the pipe reaches the predetermined pressure until a sucking operation start pressure is detected judging from an output from the pressure detector, the sucking operation start pressure indicating that the suction member starts operation to suck up the molded product with the predetermined pressure being maintained; and the controller determines a sucking operation start time such that the stable time interval is longer than a bias time interval (Tb) before the suction member sucks up the molded product, concurrently with the movement control for the moving mechanism. a vacuum sucker including a suction member operable to suck up a molded product, a vacuum generator connected to the suction member via a pipe to apply a vacuum pressure to the suction member, a pressure valve provided in the pipe between the vacuum generator and the suction member to allow and block communication between the vacuum generator and the suction member, and a pressure detector operable to detect a pressure in the pipe between the pressure valve and the suction member; a moving mechanism operable to move the suction member to transport the molded product to a release position after the molded product is pushed out of a mold of a molding machine by an ejector pin and sucked up by the suction member and then taken out; and a controller configured to execute operation control for the vacuum generator and the pressure valve and movement control for the moving mechanism, the controller being configured to start operation of the suction member to suck up the molded product after the pressure in the pipe reaches a predetermined pressure before the suction member sucks up the molded product, concurrently with the movement control for the moving mechanism, characterize in that: the controller includes a time interval measuring section configured to measure a stable time interval since the pressure in the pipe reaches the predetermined pressure until a sucking operation start pressure is detected judging from an output from the pressure detector, the sucking operation start pressure indicating that the suction member starts operation to suck up the molded product with the predetermined pressure being maintained; and the controller determines a sucking operation start time such that the stable time interval is longer than a bias time interval (Tb) before the suction member sucks up the molded product, concurrently with the movement control for the moving mechanism. the controller includes a time interval measuring section configured to measure a stable time interval since the pressure in the pipe reaches the predetermined pressure until a sucking operation start pressure is detected judging from an output from the pressure detector, the sucking operation start pressure indicating that the suction member starts operation to suck up the molded product with the predetermined pressure being maintained; and the controller determines a sucking operation start time such that the stable time interval is longer than a bias time interval (Tb) before the suction member sucks up the molded product, concurrently with the movement control for the moving mechanism.