Special gearbox for compact modular plastic extruder

Abstract

The invention relates to a special gearbox for a compact modular plastic extruder. The special gearbox comprises a gearbox shell, a high-speed transmission module, a low-speed transmission module andan output shaft. The high-speed transmission module is formed by a various-speed-ratio input gear shaft and a small gear. The low-speed transmission module is formed by a fixed-speed-ratio intermediate gear shaft and a large gear. The input gear shaft, the intermediate gear shaft and the output shaft are parallelly mounted in the gearbox shell. The small gear and the intermediate gear shaft are mounted coaxially, the large gear is mounted on the output shaft and in meshed connection with the intermediate gear shaft, and the small gear is in meshed connection with the input gear shaft. The twotransmission modules are adopted for gear transmission, part universality is improved, and a product manufacturing period is shortened while the minimum inventory requirement is met. A regulating thrust bearing is mounted between the large gear and a neutral position of the shell, a space utilization rate is optimized optimally, and the integral product manufacturing cost is reduced. By adoption of a lock nut and a thrust ball bearing structure, output shaft pre-tightening quantity can be accurately adjusted, and product operating reliability is improved.

Description

technical field [0001] The invention relates to a single-screw plastic extruder, in particular to a special gear box for the single-screw plastic extruder. Background technique [0002] At present, the supply cycle of the single-screw plastic extruder gearbox market is basically 20-30 days. In order to meet the market demand, the manufacturer must reserve inventory. The gear transmission part of the traditional plastic extruded gearbox does not adopt a modular design, resulting in a large inventory of the manufacturer and increasing the manufacturing cost. At present, the single-screw extruder gearboxes on the market all adopt the convex thrust seat structure, the space utilization rate is low, and the cost of the gearbox itself is also high. Facing the increasingly fierce market competition, it is necessary to launch more competitive products. , while achieving the purpose of saving resources. Contents of the invention [0003] The purpose of the present invention is to...

AI Technical Summary

Problems solved by technology

The gear transmission part of the traditional plastic extrusion gearbox does not adopt a modular design, resulting in a large inventory of the manufacturer and increasing the manufacturing cost

At present, the single-screw extruder gearboxes on the market all adopt the convex thrust seat structure, the space utilization rate is low, and the cost of the gearbox itself is also high. Facing the increasingly fierce market competition, it is necessary to launch more competitive products. , while achieving the purpose of saving resources

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