Plastic mold design experience

Mold design many factions, is the collection of all benchmark can be summed up in the mold design, mold design for a mind beginners some principles.
First of all, I want to talk about which side slide block should be (day, (left) or the operation side (right)).
1. Better, not up and down.
2. Better not.
To explain, to talk about the first side to open mould after the slider position basic requirements:
1. About: positioning bead (clamp).
2. : the spring.
3. Bottom: stop.
Above each side to locate more beads, spring, block is of course. According to positioning the basic requirements in the slider: spring is one of the most unreliable components, especially nowadays many good teacher or boss mould technology (even present design) didn't know much impact on life of spring spring spring compression rate; It also says side is the worst choice tomorrow.
But why better fit around? In two ways:
1. No mold maintenance, side of the Playground slide will make the dead, disassembling and not of men and dangerous, even the mold master a accidentally forget to stop or screw, the first mould slider hanging down.
2. Unless you know the finished product out, otherwise when the finished product or material head just card on the slider, disaster happens.
Above were all good in general case reference only, of course, if you encounter with 60 cm side will promptly hydraulic cylinder was placed days (the reason is simple: mold requirement).
Talked about these actually want to tell the mold design beginners, don't put the mould design as a 3 d will dismantle the pass.