The main reasons for the unstable injection of vertical injection molding machines are as follows:
1. The screw is severely worn, resulting in the material not being able to be extruded effectively, and the instability caused by the untimely extrusion of the material. 2. There are two reasons for insufficient injection pressure. First, it may be that the artificially set injection pressure is too small, resulting in insufficient injection pressure. Second, the hydraulic cylinder valve is damaged, resulting in insufficient supply pressure or insufficient injection pressure. pressure needs. 3. The injection nozzle and the pipeline are blocked, resulting in the unstable extrusion of the injected material inside the pipeline.