Rubber Extrusion Vulcanization Production Line Rubber Extruder Machine

Application

The Rubber extruder machine is widely used in rubber machinery for extruding tread, inner tube, rubber tube and various rubber strips. The equipment works efficiently. When the rubber extruder is working, the rubber is stirred, mixed and plasticized with the help of the screw extruder, then mixed and plasticized. Then it moves to the direction of the machine head, and then the product is extruded from the die head.

Machine specification of Cold Feed Rubber Extruder Machine

DETAILS OF RUBBER EXTRUDING MACHINE

The equipment is mainly composed of a hard-tooth surface vertical reducer, feeding section barrel, plasticizing section barrel, exhaust section barrel, extrusion section barrel, screw,(feeding section,plasticizing section,exhaust section,Extrusion section bushing,temperature control system,main motor DC speed control system,vacuum device, special head and other parts.

1.SCREW
The material is made of 38CrMoAlA high-quality nitrided steel,after quenching and tempering and surface nitriding treatment, the surface hardness of the screw groove is HRC60-65,and the depth of the hard laver is 0.5-0.7mm. The screw groove form adopts the compound structure of four-end screw edge,double-end groove,and variable pitch in the feeding section. In the plasticizing section,it adopts the compound structure of main and auxiliary threads,different main and auxiliary thread leads,and different screw diameters., Exhaust section and extrusion section adopt double-headequal-depth segmented variable pitch structure.This type of screw groove combination has the characteristics of strong feeding ability, good plasticization and exhaust effect, and stable extrusion pressure.

2.BARREL
Bushinq: Installed in each section of the barrel, it is divided into feeding section bushing: plasticizing section bushing;exhaust section bushing; extrusion section bushing. The materials are all made of 38CrMoAlA high-quality nitrided steel, after quenching and tempering and inner hole surface nitriding treatment, inner hole surface hardness HRC65-70, hard layer depth 0.5-0.7mm. The outer diameter of the bushing is machined with an annular groove for heating and cooling of the bushing. Each bushing can be replaced as needed.


3.GEARBOX
It adopts two-stage reducer with hard-hard tooth surface cylindrical gear special for extruder,which has the characteristics of large axial load capacity and compact structure. The gears and gear shaft materials are made of two different high-quality,high-strength. low-carbon alloy steels. The tooth surfaces are carburized,quenched and ground, and the gear pair transmission accuracy is level 6.

4.TEMPERATURE CONTROL
The equipment is equipped with a five-unit temperature controller,each unit can be independently controlled, respectively controlling the feeding section barrel, plasticizing section barrel and exhaust section barrel,extrusion section barrel, The temperature of the head and screw. The temperature controller adopts electric heating, the heating power of each unit is 9Kw, the circulating medium is softened water, and the inlet pressure is 0.2-0.3Mpa. Adopt the hot water circulating pump of the Danish Grundfos(GRWDFOS) company, and adopt the intelligent automatic temperature controller, the temperature control accuracy is ±2℃.The temperature controller has an automatic water replenishment function, the hot water circulating pump cannot be started and the electric heater cannot be heated when there is no water supply.