What is the V-P conversion in injection molding machine?
Injection molding is a cycle process, each cycle mainly includes: quantitative feeding - melt plasticization - pressure injection - mold cooling - die opening pieces. Take out the plastic parts and then close the die for the next cycle.
During injection molding, when the cavity is almost full, the movement of the screw is converted from flow rate control to pressure control.This transformation point is called the dwell switching control point, that is, the V-P switching point.The working principle of injection molding machine and injection syringe with similar, it is the use of screw (or piston) thrust, the plasticizing good molten state (i.e. viscous flow) plastic injected into the mold cavity closed good after curing stereotypesmade the process of the products.
V-P switching point, that is, to that location, from speed to pressure switch
