Hollow block former

The utility model discloses a hollow building block forming machine. The aim of the utility model is to solve the problems of an existing hollow building block forming machine that the operation is inconvenient, the safety performance is poor, the machine frame is unstable, the stress is poor, the mechanical wear is large, etc., which are caused by that an upper mould of existing hollow building block forming machine is in hanging mode. The utility model has the technical proposal that the existing hollow building block forming machine is used as a foundation. The hanging fixing mode of the existing upper mould is changed into a transverse push-out mode of the upper mould. The utility model is provided with an upper mould fixing device and an upper mould positioning device. The utility model changes the hanging fixing mode of the upper mould into transverse push-out mode of the upper mould, and has the advantages of convenient operation, good safety performance, low gravity centre for a machine frame, high stability, small stress on a transmission crank arm, small mechanical abrasion, and long service life for a transmission device.