Extrusion System For Plastics Extrusion Machine

Extrusion system consists of screw and barrel, Hopper, die, and die, plastics by squeezing the system plastics melt evenly, and, in the process of establishing, under pressure from continuous by screw extruder.

1, screw: is the most important parts of extruder, it is directly related to applications and productivity of extruders, made from high-strength corrosion-resistant alloy steel.

2, barrel: is a metal cylinder, generally with higher heat resistance, compressive strength, strong wear-resistant, corrosion-resistant alloy steel composite pipe made of or lined with alloy steel. Barrel and screw fit, realize the plastic pieces, softening, melting and plasticizing, vent and compaction, and uniform conveyor rubber molding system. Barrel length is 15~30 times the diameter, so that the plastic is fully heated and fully plastic into principles.

3, Hopper: hopper with cut-off device at the bottom, so you can adjust and cut off the flow, side of the hopper with sight and calibration of metering devices.

4, die and mold: head made of alloy steel and carbon steel coat, and head is equipped with mold, heads are used to rotate the plastic melts into parallel straight line movement, steady import model Kit, and endows plastics with the necessary pressure. Plastic plastic in the barrel of the compaction, porous plate along a certain flow through head neck into head mold, die mandrel set appropriate, formation cross section decreases of the annular space, plastic melt around the wire to form a continuous solid tube coating. In the guarantees head plastic reasonable channel, elimination of accumulated plastic corner, often placed with split sleeves, for elimination of plastic extrusion pressure fluctuations, there is set of grading rings. Head is also equipped with mould correction and adjustment device, easy to adjust and align core and mould sleeve of concentricity.