In recent years, some plastic products manufacturers have developed towards high value-added products and special mixed four-color products under the severe operating environment. In the near future, the special distinguish mixed four-color injection molding machine plastic products molding technology is often the highlight of the exhibition, the Sea Eagle exhibition special distinguish mixed four-color injection molding machine also shows that the Sea Eagle distinguish mixed four-color injection molding machine is booming. Distinguish the product features of mixed four-color injection molding machine: high speed, high precision, high repeatability mixed two-color injection molding machine

The control characteristics of the injection molding machine for injection pressure and speed are as follows: by comparing the position signal set and the position signal of the electronic ruler, the comparison signal is input to the control device to realize speed switching and pressure switching. The price pressure value of the flow and high-speed injection molding machine is set to the analog or mathematical input control device, and the command signal is amplified and output to the proportional pressure flow valve to achieve the control of flow and pressure, so as to achieve the control of multi-stage injection pressure and speed.

The switching of injection pressure has three stages: through the position setting of the control device and the displacement sensor through the control device to realize the switching of pressure and speed; From injection switch to pressure holding; During the pressure holding process, the displacement setting and time switching are adopted. There are two sections of pressure and two sections of speed, and the switch between the two sections is switched by time, because the screw displacement is very small after entering the pressure holding stage.

(1) Temperature control (1) Cylinder temperature control is an important parameter in the injection molding process, which is the only external heating source of the plasticizing device, and the cylinder temperature control technology directly affects the quality of the product.