In the woodworking machinery woodworking sander in the operation process, there are often some failures, but these should be eliminated in time, but if not handled properly, it may affect production and increase costs. This requires the operator must be familiar with the operating regulations, skilled operation, and timely removal. Some faults are not serious when they are discovered, but if they are not dealt with properly, they will cause major faults that will seriously affect production. The following analyzes the common faults of the sander.

       1, the belt deviation, generally caused by improper adjustment, the normal belt swing should be swinging 1520mm, swing frequency of 15-20 beats / min, the pendulum speed is moderate and swing into the same speed. If you are in an abnormal state and over time, you may experience deviations, especially when the swing speed is inconsistent, which may cause abnormal shutdown. The photoelectric switch is damaged, the solenoid valve is damaged, and the swing cylinder is damaged. Poor dust collection, high dust concentration will affect the normal operation of the photocell, but also cause the belt to drift; should replace the damaged accessories in time, improve the dust removal effect.

       2. Limit failure, limit switch on both sides of the belt, when the belt oscillates, when it goes to one side, it touches the limit switch, the belt is released, and the main motor stops automatically, which can effectively protect the belt. Once the limit fails, the belt can be damaged, rubbing the rack with Mars, and even causing a fire. Therefore, the limit switch should always check whether the action is reliable.

       3, belt wrinkle, belt can not be used once wrinkled, generally caused by abrasive belt wrinkling there are three possibilities: sand roller and tension roller wear caused by grinding want to repair roll; abrasive belt caused by soft hair wrinkle , Drying and drying can be used to deal with; sanding machine does not use a long time the surface of the rust roller rough, sand belt swing difficult to initiate, this time deal with the roller rust or sanding with a finer sandpaper.