All-electric injection device driven by planetary gears

Abstract

The invention discloses an all-electric injection device driven by planetary gears. The device is characterized in that a planetary gear set is arranged on an injection front plate, and the planetary gear set comprises a central gear, four motor gears, four driving motor sets and a lead screw assembly, the central gear and a lead screw nut are installed on the injection front plate in a shaft sleeve manner, and the four motor driving gears are evenly distributed on the periphery of the central gear and meshed with the central gear; and the four driving motors respectively drive the four gears to rotate by adopting a gear shaft structure manner, and each shaft is mounted on the injection front plate. According to the full-electric injection device, the consistent collaboration of power and speed of the multiple motors is improved in a planetary gear driving manner, the gears are adopted for intermediate power transmission, and therefore the structural strength and reliability are improved under the heavy load condition, and a power input manner of driving the lead screw nut through power and an internal shaft sleeve mounting manner are adopted, therefore, the compactness of the whole structure is improved, rapid power transmission is achieved, and the requirements of high injection force and high-power rapid injection are met.

Description

technical field [0001] The invention relates to the field of injection molding machines used for injection molding, in particular to an injection device driven by a planetary gear for an all-electric injection molding machine. Background technique [0002] With the rapid development of injection molding equipment, the application range of all-electric injection molding machines is constantly expanding. At present, the injection structure of the traditional all-electric injection molding machine adopts the double-screw rear or multi-screw through-drive form, but it is mostly used in small and medium-sized injection molding products. For ultra-large all-electric injection molding machines, the required injection force is higher. The traditional single-screw or double-screw drive scheme puts forward extremely high requirements on the performance of the ball screw itself, which can meet its requirements for load, life and reliability. There are almost no lead screws, and its st...

AI Technical Summary

Problems solved by technology

Wherein the injection frame includes the rear plate of the injection platform, the front plate of the injection platform, the pre-molding seat, the injection rod connecting the rear plate of the injection platform and the front plate of the injection platform for injection, and the pre-molding seat slides on the rod of the injection platform; There are four sets of lead screw assemblies and they are symmetrically installed on the frame to drive the pre-molded base to move; the power assemblies are provided with four sets and installed on the front plate of the injection platform; but the four sets of motors drive four sets of lead screws respectively, and the synchronization Poor, the four motors are respectively connected to the four lead screw components, resulting in many speed deviation factors, floating in the range of the four motor drive speed deviations may easily cause wear of the lead screw, excessive friction of the injection seat and shutdown, lack of mechanical coordination auxiliary measures, Only relying on the driver program to control four groups of motors at the same time is not easy to adjust the unity of power

Images