Machine head of hollow brick making machine

The utility model relates to the technical field of hollow brick production equipment, and discloses a hollow brick making machine head which comprises a machine head body and a first hole core, a fixing strip is fixedly installed at the lower end of the machine head body, a sliding groove is formed in the lower end of the fixing strip, a sliding block is arranged in an inner cavity of the sliding groove, and a lead screw sleeve is fixedly installed in the middle of the sliding block. A bidirectional lead screw is arranged in an inner cavity of the sliding groove, the left end of the bidirectional lead screw is rotationally connected with the left end of the inner cavity of the sliding groove through a bearing, and a fixing rod is fixedly installed at the lower end of the sliding block. Through the bidirectional lead screw, the bearing, the fixing rod, the threads, the first hole core, the second hole core, the third hole core, the through groove, the nut and the hinge, the problem that the hole diameter of a