To cut a gate by one gate cutting unit even when a surface of a molding residual mold is changed and to instantaneously correctly position a molding at its cutting jig by reducing shaking of the cutting unit.

A traverse type removing unit takes out the molding along a lateral frame 11 extended in a lateral direction of an injection molding machine 50. In this removing unit, the gate cutting unit 25 having the cutting jig is mounted via a height regulating bar 22 substantially not extending directly to a lateral midway site or in a longitudinal direction by avoiding an extended end of the frame 11, and a direction of an operating surface of the unit 25 is set upward to form a substantially right angle to the direction of the surface of the molding residual mold.