The invention relates to the technical field of injection molding and discloses a multicolor
injection molding machine and a use method of the multicolor
injection molding machine. The multicolor
injection molding machine comprises an injection molding body, a secondary
injection device, a controller, a mold and a mechanical arm. The secondary
injection device is connected to the injection moldingmachine body. The mechanical arm is connected to the top of the injection
molding machine body. The injection
molding machine body further comprises a shell, a first screw type
injection device. Thefirst screw type injection device and the mold are both installed on the shell. The first screw type injection device is directed at a first cavity of the mold. The controller is connected with the first screw type injection device and the mechanical arm. The secondary injection device further comprises a
machine frame, a connector and a second screw type injection device, wherein the
machine frame is connected with the shell through the connector, and the second screw type injection device is installed on the
machine frame and connected with the controller. According to the multicolor injection
molding machine, the auxiliary secondary injection device and the mechanical arm are additionally arranged, and then the bicolor injection molding purpose is achieved; and meanwhile, the structureof a bicolor injection molding machine with a rotating disk is not needed, the mold structure is simple, cost is low,
continuous operation can be conducted, and the injection molding production efficiency is high.