Why is there a phenomenon of "small horses pulling large trucks" in the fully automatic fi

The fully automatic laminated sand shell production line generally occurs at the parts where the shell, core, and shell are subjected to gravity and are freely suspended. Most of them are in a plastic state after the crust is formed, but their strength cannot withstand the self gravity of the sand block and they fall off. The softening point of the resin is too low and the melting temperature is too wide; The high amount of resin added causes the resin film on the surface of the coated sand particles to be too thick; The temperature of the template and core box is too low or the heating is uneven, resulting in poor thermal conductivity; The blowing pressure is too high/low, and the time is too long/short, which causes the surface of the core box to cool rapidly; The crust time is too long, the crust is too thick, and the amount of calcium stearate added is too high. Find out the reason for the peeling of the laminated sand equipment and solve the problem accordingly.