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Extrusion System Of Plastic Single Screw Extruder

              Extrusion system including screw, barrel, hopper, nose, and mold, plastic through the extrusion system and molded into a homogeneous melt, and in this process under the pressure, the screw continuous extrusion head.Plastic Single Screw Extruder

             (1) Screw: Is the most important part of the extruder, it is directly related to the application scope and productivity of the extruder, made of high strength corrosion-resistant alloy steel.Plastic Single Screw Extruder

             (2) Barrel: is a metal cylinder, generally with heat-resistant, high compressive strength, rugged wear-resisting, corrosion-resistant alloy steel or lined alloy steel composite steel pipe made. Barrel and screw, to achieve the crushing of plastics, softening, melting, plasticizing, exhaust and compaction, and to the molding system continuously uniform delivery of rubber, the general barrel length of its diameter of $number times, so that plastic is fully heated and fully plastic into the principle.

             (3) Hopper: The bottom of the hopper is equipped with a truncation device to adjust and cut off the material flow, and the side of the hopper is fitted with a hole and a calibration metering device.Plastic Single Screw Extruder

             (4) Nose and mold: The head is made of alloy steel and carbon steel jacket, the head is equipped with a molding mold, the role of the head is to rotate the movement of the plastic melt into a parallel linear motion, uniform and smooth introduction of the mold sleeve, and to give plastic to the necessary molding pressure, plastic in the barrel of plastic compaction, through the porous filter plate along a certain flow path through the head of the head of the neck into the mold, die-core mold sleeve suitable fit to form a continuous reduction of annular gap, The plastic melt is formed in a continuous dense tubular cladding around the core line. In order to ensure that the plastic flow path reasonable, eliminate the accumulation of plastic dead corners, often placed with a shunt sleeve, in order to eliminate the pressure fluctuations in plastic extrusion, there are also set the pressure ring. The die calibration and adjustment device is also arranged on the head, which is easy to adjust and correct the concentricity of the die core and the die sleeve. The front part of the nose is fitted with a pressure ring, which is used for equalizing pressure; The extrusion forming part is composed of a die sleeve seat and a die sleeve, and the position of the die sleeve can be adjusted by the bolt through the support to adjust the relative position of the die core and to adjust the uniformity of the thickness of The exterior of the head is equipped with a heating device and a temperature measuring device.Plastic Single Screw Extruder