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Extruder head and the body is, in addition to feeding, shaping, cooling, pulling, cutting and winding and other auxiliary equipment (see pictures). In the rubber vulcanization process further includes devices. In actual production, the main and auxiliary equipment is often connected to a unit to use. 1, the extruder
Divided by the number of single-screw extruder and a twin screw extruder (1) single screw extruder
Single-screw extruder is in the heating cylinder installed with a rotating screw, barrel external heating and cooling devices partition has one end with a radial feed port and the other end connected to the axial and head. It is a key component of the screw extruder. Single screw extruder main technical parameters Screw diameter, aspect ratio (the ratio of length to diameter of the screw), the screw speed range, the drive motor power, cylinder power and heating machine production capacity. Extruder screw diameter determines the allowed maximum production capacity and product cross-section machine. Different materials require different screw geometries and aspect ratio. Modern plastic extrusion machines widely used combination screw, distributive mixing type screw, and the screw or pin plus barrier so as to improve plastics, improve productivity and product quality. (2) twin-screw extruder
Twin-screw extruder has two screws rotating in ∞-shaped heating barrel. Can be divided into the screw-type engagement and non-engagement; and a combination of non-modular; co-rotating and counter-rotating. In the same direction intermeshing and counter-engagement type used more. The former is for plastic blends, filled and reinforced, the production batch; the latter used in the manufacture of hard PVC products. 2, the nose and die
Extruder manipulation of the extrudate to form a predetermined cross-sectional shape of the die member, said transition portion between the barrel and the die, said nose, and if the die head as a whole, generally referred to as the nose, It may also be referred to as a die.
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