QFT4-30 concrete block machine. It adopts the full hydraulic driver and it can produce the concrete road pavers and concrete hole bricks and all kinds of wall bricks. the active forcing arch acentric feeding material. Under the help of the drapery bar and it can setting the material equality. Adding material device has many mixer forks. When the materials are sent to the moulds box and the mixer fork can be forcing adding material to the mould box. And the material can be set equality instantaneous. 2To combine the high frequency vibration with moulding. Feeding material device adopts the layered setting material(concrete grass roots and color faced layer). specific adding material design: It adopts the active forcing arch acentric feeding material. Under the help of the drapery bar and it can setting the material equality. Adding material device has many mixer forks. When the materials are sent to the moulds box and the mixer fork can be forcing adding material to the mould box. And the material can be set equality instantaneous. To meet the design of the adding material quickly and equality. It is used to produce the hole bricks. 3The whole machine adopts the design of durability and use the welding craftwork to make the machine durable. 4Two time setting material device and combined double setting material device. It can assemble random to meet the requirement. It is applied to 6cm to 9cm single color and double color products.