The invention provides a large-scale square banding
machine. A compression chamber is internally provided with a compression
plunger piston and a compression baffle which are driven by a
hydraulic cylinder, a pre-compression chamber communicated with a compression chamber discharging port is arranged above the compression chamber, the pre-compression chamber is internally provided with two compression rollers driven by a
hydraulic motor, a controller is combined with a hydraulic
system, motion state signals are collected through various
stroke switches and sensors, after the controller processes the motion state signals, a hydraulic
system component is controlled to drive the compression
plunger piston and the compression rollers to achieve the
automatic control of banding
machine compression. Compared with the
compression method of a traditional large-scale square banding
machine, the
feeding mode is changed, and the soil content in bundled
straw is reduced; the pre-compression chamber is added on the basis of an existing machine type to achieve the pre-compression deformation of the
straw, thereby providing convenience for final compression forming; an electro-hydraulic automaticcontrol
system replaces manual operation, thereby saving the labor, reducing the labor cost, improving the work efficiency, improving the
working environment, and being capable of controlling, monitoring, alarming, and urgently stopping a machine in real time.