An apparatus for the production of concrete molded parts in a molding machine includes an upper mold part having a pressure plate arrangement having multiple pressure plates, each facing an opening of a mold insert, wherein each of the pressure plates is screwed onto an intermediate plate, wherein the intermediate plate is connected with a punch plate on the upper mold part on the side facing the upper mold part, by way of at least one pressure punch. The intermediate plate is braced against the punch plate, in that at least one bolt that can be screwed on is passed through an accommodation on the intermediate plate, which bolt releasably engages into the punch plate and has a hollow body that encloses the bolt, between the intermediate plate and the punch plate.