a device for transforming plastics preforms into containers includes at least one blow mold for receiving the plastics preforms . the blow mold has two mold parts , which can be pivoted with respect to each other about a connecting axis , with at least one locking element , which is arranged on one of the mold parts and interacts with at least one counter element arranged on the other mold part , in order to lock the two mold parts with respect to each other . the counter element is arranged about an axis arranged substantially parallel to the connecting axis and can be turned between a locking position , and an unlocking position . the device has an actuating element for turning the counter element , having a drive element which interacts with the counter element to actuate it .