heating with electric ring
actually, there is the third kind of the electrical heating method—heating with electric ring, wind the flat resistance wire around the mica and put the part into a tailor-made metal shell, […]
direct heating with resistance wire
I want to show another type of the electrical heating method–direct heating with resistance wire, select sound resistance wires, insert them into insulated a porcelain tube, […]
heating with electrical bar
if mold temperature is required to be above 80 Celsius degrees, a heating device shall be needed. […]
temperature of plastic molds is very important
temperature of plastic molds directly influences the molding quality and productivity of plastic parts, for thermoset plastics, […]
introduction to secondary ejector unit
Generally, plastic parts can be taken out of the mold cavity by only one ejection, yet due to their special forms, it is still difficult to take out the parts from cavity or the parts can not fall off freely from the mold upon the completion of an ejection movement. […]
introduction to a most-commonly-used ejector unit
a most-commonly-used ejector unit only play the role as ejecting tools. Sometimes, mandrils can also partake in the molding of plastic parts according to the needs thereof. Such mandrils can then be made into the same shape as certain part of the plastic parts or just as core. […]
what is the simple ejector unit in a mold?
what is the simple ejector unit in a mold? […]
the tripping mechanism of a mold
During each cycle of the injection and molding, the plastic part must strip from the cavity and core of the mold, […]
the action point of the ejection force
the first principle of designing ejector unit is the action point of the ejection force shall be near the core as much as possible since the plastic parts would enclasp the core when contracting.
the ejection force shall be imposed upon the section of the plastic parts
the second principle of designing ejector unit is the ejection force shall be imposed upon the section of the plastic parts with the largest rigidity and intensity. […]