Purlin machine work process, will inevitably appear a variety of fault problems, before solving these problems, the first thing to find out the cause of the problem, according to their own past experience, summed up in addition to a few possible reasons
1. the Taiwan seat is uneven;
2. the spring pressure is not balanced;
3. hopper under the uneven material;
4. vibration converter reversal;
5. the ingredients are unreasonable, fine sand more aggregate less.