headed guide pillars are usually applied to small molds or molds with scarce productivity
headed guide pillars are usually applied to small molds or molds with scarce productivity, […]
headed guide pillars are usually applied to small molds or molds with scarce productivity, […]
straight guide bushes are usually applied to simple molds or molds with thin plate; I-type headed guide bush is mainly applied to complicated molds or the guide of fixed and moving molds of large- and medium-sized molds; […]
to ensure sound fitting of parting line after mold closing, a cuttings shoot of the guide pillar and guide bush should be made on the parting line; […]
the surface roughness for the working part of the guide pillar takes Ra0.0004mm.(micron order Ra 0.0002mm), […]
clearance fit is adopted between the guide pillar and guide bush, with the quality of fit usually as H7/h5(G6/h5 or H6/h5 for high quality of fit and H8/f8 or H9/f9 for low quality of fit) and the slip length usually takes 1.5—2 times of the mating diameter, […]
for molds with small batch of production and of low precision, the guide pillar can be directly fitted with pilot hole on the plate. The hole should be generally made into through hole, […]
shallow side concave of plastic parts requires small core-pulling distance, yet when the molding area of side concave is large, a large core-pulling force is thereby needed, therefore, tilted lifter mechanism can be adopted for side parting and core-pulling. […]
a detail for designing tilted lifter mechanism need to be known, for inner side core-pulling, top of the tilted slide should be 0.05—0.1mm lower than the end plate if core, since during the protruding, […]
a suitable dip angle for designing a tilted lifter mechanism is very important, I think the pin’s dip angle B should be taken 5—25 degree , […]
I have a tip for designing a tilted lifter mechanism, to endow the mechanism with restoration function, the length of circular bead for restoration should be adopted preferably larger under possible conditions, […]