Gearbox for single-screw extruder

Abstract

The invention discloses a gearbox for a single-screw extruder. The gearbox for the single-screw extruder comprises a box body, an input gear shaft, two reduction gear shafts and a hollow output shaft.Both the input gear shaft and the hollow output shaft which penetrate the box body are provided with sealing devices. The power output end of the hollow output shaft is provided with a speed-ratio gear pair, and the other end of the hollow output shaft is a thrust seat. A gear sleeve, an inner spline and an inner tooth ring are assembled to the power output end of the hollow output shaft. An outer spline of an extrusion screw penetrates an inner hole of the gear sleeve and then is engaged with a drive inner spline corresponding to the hollow output shaft. An outer gear ring and a gear are arranged on the outer wall of the gear sleeve. The portion, corresponding to the gear sleeve and the speed ratio gear, of the box body is provided with a roller butt joint seat. The gearbox for the single-screw extruder is compact in structure, good in stability, capable of improving transmission precision and bearing capacity and prolonging the service life and convenient to maintain.

Description

technical field [0001] The invention relates to a transmission gearbox, in particular to a gearbox for a single-screw extruder, which belongs to the special equipment for the single-screw extruder used in the rubber and plastic industry. Background technique [0002] With the growth of the global population and the improvement of the overall living standard, the demand for rubber and plastics in countries around the world is increasing year by year, and people hope for safer, healthier and more comfortable products and environments. Therefore, in the food packaging and daily necessities application markets, in the infrastructure and construction fields, in the medical safety and sports and leisure markets, in the fields of environmental protection and safety governance, etc., the demand for plastic products is increasing. At the same time, demand for rubber tires and rubber goods for cars, trucks and aircraft is skyrocketing in the field of ever-increasing mobility. The gro...

AI Technical Summary

Problems solved by technology

The existing single-screw extruder equipment arranges the gear sleeve and the speed ratio gear outside the gearbox. Due to the structure of the installation arrangement, the gear sleeve and the speed ratio gear are installed cantilevered, and the manufacturing process and heat treatment process are very difficult. Very low precision, low efficiency, easy to damage, resulting in increased maintenance costs and labor intensity

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