For the basic mechanism of the fully automatic plastic curing chamber, simply put, a screw rotates in the barrel and pushes the plastic forward. The screw structure is an inclined plane or slope wrapped around the layer, and its purpose is to increase the pressure in order to overcome greater resistance. As far as the fully automatic plastic curing chamber is concerned, there are three types of resistance that need to be overcome during work:

One is friction, which includes the friction between solid particles (feed material) against the barrel wall and the mutual friction between them during the first few turns of the screw rotation (feed area);

The second is the adhesion of the melt on the cylinder wall;

The third is the internal logistics resistance when the melt is pushed forward.

According to Newton's theorem, if an object is at rest in a certain direction, then the force on the object in that direction is in equilibrium. For a screw that moves in a circumferential direction, it has no axial movement, which means that the axial force on the screw is in a balanced state. So if the screw exerts a large forward push force on the plastic melt, then it also exerts a backward push force of the same magnitude but direction on another object. Obviously, the thrust it exerts is on the thrust bearing behind the feed port. Most single screws have right-hand threads. If you look at them from the back, they rotate in the opposite direction. They rotate backwards out of the barrel. In some twin-screw fully-automatic plastic curing chambers, the two screws rotate in opposite directions in the two barrels and cross each other, so one is right and the other is left. For interlocking twin-screws, the two screws are Rotate in the same direction and therefore have the same orientation. However, in either case, there is a thrust bearing that bears the backward force, and Newton's theorem is still followed.

Temperature principle:

The plastics in fully automatic plastic curing chambers are thermoplastics, they melt when heated and solidify again when cooled. Therefore, heat is required in a fully automatic plastic curing chamber to allow the plastic to reach the melting temperature. So where does the heat to melt the plastic come from? The first floor scale feed preheating and barrel/mold heater may work and are very important at startup. In addition, the energy input by the motor, that is, the friction heat generated in the barrel when the motor overcomes the resistance of the viscous melt and rotates the screw, is also Important heat source for all plastics, except small systems, low speed screws, high melt temperature plastics and extrusion coating applications. In operation, it is important to realize that the barrel heater is not actually the primary heat source and contributes less to the extrusion than we might expect. The temperature of the rear cylinder is more important because it affects the gearing or the conveying speed of solids in the feed. Generally speaking, unless used for a specific purpose (such as glazing, fluid distribution or pressure control), the die and mold temperatures should be at or close to the required melt temperature.