as for coarse lead screws, I have more details, during the demolding process, how to drive the cores, yes! The opening movement of the molding machine is transformed into a rotary action, and the kind, diameter and number of threads determine the opening stroke and force of the machine.

what about molds with coarse lead screws? I think, that is the most simplest driving method, because nuts mounted in the machine is the most reliable elements for thread-forming cores. And we can save setup time and special control of the stroke.

as for rack, what is the most important? Yes! It should have an accurate pitch and precise bearings and guides.So that the functioning of such mold is absolutely flawless.

I want to say some thing about unscrewing mold with rack. In these molds, the diameter of part, the force of the machine or the rack drive limit the number of threads that can be molded, and the opening movement of the machine or a separate hydraulic or pneumatic actuator can actuate the stroke.

in all the molds with unscrewing equipment, please pay your attention to an exact mounting and alignment of cores and device units. For example, insufficiently supported cores, particularly slender cores, can be shifted from their center position by the entering plastic material.

As a professional mold maker, more information must be at hand when you evaluate a mold project,they include the machine we will run in, the number of cavities required, the type of plastic that will be used for this product. And so on.