a mold closing unit for use in an injection molding machine for processing plastic materials for removal of moldings is provided with a device for actuating at least two first identical parts of an injection mold , which are transferred alternately into the space between the mold carriers of the mold closing unit on a guideway that runs transversally with respect to the closing direction for creation of an injection mold . since all parts of the injection mold together with their corresponding swivel arms constitute a single oscillating crank with multiple arms , which transfers the first parts of the injection mold substantially in the parting plane of the mold closing unit , and since the position of the oscillating crank in the mold stressing chamber is determined by the mold closure itself , at least one of the first part of an injection mold being located outside the injection mold is fixed in a precise position that can be repeated for each injection cycle , the moldings can be handed over to a removal device and shorter production times with a faster ejection of moldings is obtained .