as for rack, what is the most important?
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.
more details about unscrewing mold with rack
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.
how to drive unscrewing equipment in a mold
when a mold has an set of unscrewing equipment or more. How to drive them, yes! The drive force for these mold is transmitted from the opening movement by a lead screw with coarse threads or a rack. […]
a mold with unscrewing equipment
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.
design an unscrewing device in a mold
hey！everybody， please don’t forget one detail during designing an unscrewing device in a mold, that is very important, do you know what? Yes! Please make sure if this part is designed in this way that it can be protected against rotation.
threads should be screwed off or out of the part
no matter cores for internal threads or sleeves for external threads，the mold is either open or closed，they should be rotated in the mold， during demolding， they should be screwed off or out of the part。
threads on a plastic part
Our mold designers often see threads on a plastic part， they are called internal threads and external threads，and mold designer absolutely know cores for internal threads and sleeves for external threads，in order to get high quality threads and to be molded economically and in large quantities，unscrewing device will be used inside a mold. Threads are [...]
the features of three-plate mold
as for three-plate mold, it has the following features: […]
the features of two-plate mold
two-plate mold and three-plate mold are basic mold structure, at first, the features of two-plate mold are: […]
marking, symbols, and characters on a plastic part
there are three structures for marking, symbols, and characters on a plastic part, they are protrusion, depression, and a boss on a depression.