Automatic screen changer filter area

　　In the automatic screen changer of the plastic extruder, the cold and heat control zone includes a heating zone near the filter zone on one side, a cooling zone on the other side of the heating zone, and a cold and heat separation zone between the heating zone and the cooling zone. In the automatic screen changer of the plastic extruder, the heating zone includes a heating temperature control monitoring point and a heating control system, and the cooling zone includes a cooling temperature control monitoring point and a cooling control system.

　　In the automatic screen changer of the plastic extruder, the left and right sides of the filter area are provided with cold and heat control zones. In the automatic screen changer of the plastic extruder, a mesh plate with through holes is arranged between the filter screen and the die head, one end of the mesh plate is arranged on the top surface of the die head, and the other end of the mesh plate is close to the filter screen. In the automatic screen changer of the plastic extruder, a sealing pad is arranged on the parting surface through a fastening bolt. In the automatic screen changer of the plastic extruder, the sealing pad is a copper pad. Compared with the prior art, the utility model constitutes an automatic screen changer of a plastic extruder by means of a filter screen arranged between the filter area of the extruder and the die and a temperature control area of the cold and heat.

　　When the plastic extruder is working, the utility model takes away the impurities in the attached molten raw materials through the cooperation of the temperature control zone and the filter mesh, prevents the accumulation of impurities in the filter mesh, realizes the continuous replacement of the filter mesh without stopping the machine, reduces the material loss, energy waste and production time, and reduces the production cost. The utility model has the advantages of easy fabrication, low cost and easy operation.