An injection molding machine is proposed, especially for injection stamping of large-area plastic moldings, comprising at least a first injection mold (13) which has two mold halves (15, 16) and which forms a first cavity (17) with a first projected area, and a second injection mold (14) which has two mold halves (18, 19) and which forms a second cavity (20) with a second projected area, one mold half (15, 18) of the two injection molds (13, 14) respectively being fixed on a common carrier unit (21) and for the two injection molds (13, 14) there being support means (22A to 25A; 22B to 25B) acting in the opening direction. In order to limit the force acting on the respective cavity, the support means (22A to 25A; 22B to 25B) depending on the respective projected area of the respective cavity (17, 20) partially take up the clamping force so that a holding pressure force acting on the material which has been injected into the respective cavity (17, 20) is set.