Electrical control system of sandblasting machine

The sandblasting machine achieves fully automatic sandblasting through an electrical control system, which can automatically adjust the sandblasting angle, sandblasting time, sandblasting distance, blowback time, spray gun movement, workbench speed, etc.

The electrical control system mainly consists of several parts, including X-axis lateral displacement component, Y-axis longitudinal displacement component, workbench rotating component, sandblasting component, blowing component, dust removal component, etc. All components are coordinated and controlled by LM series PLC based on pre-set parameters on the touch screen, efficiently and reliably completing the sandblasting process.

X-axis lateral component

Composed of a stepper motor, screw, guide rail, slider, limit switch, and an incremental encoder. The stepper motor receives high-speed pulse signals from the LM series PLC and drives the screw to rotate at a certain speed, causing the slider to move left and right on the guide rail. The encoder collects the number of turns of the screw, forming an X-axis closed-loop control system. Two limit switches are installed at the limit positions of the left and right slider movements to ensure the safety of slider movement and prevent accidents such as flying.

Y-axis longitudinal displacement component

Like the X-axis component, it consists of a stepper motor, screw, guide rail, slider, limit switch, and an incremental encoder. Move the slider up and down on the guide rail, and the encoder collects the number of turns of the screw to form a closed-loop control system for Y-axis movement. Two limit switches are installed at the limit positions of the slider's up and down movement to ensure the safety of the slider's movement and prevent accidents such as flying.

Workbench rotating components

Composed of a servo motor, workbench, and reducer. The servo motor is set to speed control mode, using LM series PLC analog output control. After deceleration by the reducer, the worktable is driven to rotate at a constant speed. The speed can be changed through the touch screen. Due to the large inertia of the worktable, the servo motor is set to accelerate start and decelerate stop to reduce damage to the servo motor caused by overshoot.