Side draw pin

Side actions (side coring or side draw pins)... 

Side-draw pin ru A projecting mold element used to core a hole in a direction other than the direction of mold closing, and which must be retracted before the mold is opened and the part ejected. 

Undercut - kot n (1859) A lateral indentation in a molded part (or protuberance in a mold) that tends to impede withdrawal of a molded part from the mold. Articles of flexible materials such as plasticized vinyls can often be removed without difficulty from molds with severe undercuts, but undercuts must either be avoided in rigid materials or, where they must be part of the design, the mold must have movable parts that withdraw side draws) before the part is to be ejected. Slight undercuts are sometimes deliberately designed into one half of a mold to cause a part to remain in that half when the mold opens. See also Side-Draw Pin. 

Parts requiring side draw core pins that must be removed prior to discharging the part from the mold. 

Blind rivets consist of a headed hollow body inside of which is assembied a centre pin or mandrel. The rivet is set by inserting the mandrei in a tool having a means of gripping, and the rivet is inserted into a predrilled hole in the assembly. Operation of the tooi causes its gripping jaws to draw the mandrel into the rivet, with the result that the head of the mandrel forms a head on the rivet on the blind side of the assembly, at the same time pulling the metal sheets together. When the joint is tight, the mandrel breaks at a predetermined load. Fig. 12.13. The broken-off portion of the mandrel is then ejected from the tool. 

The support plate backs up the B plate in the mold, and melt is delivered from the nozzle to the sprue bushing. The locating ring aligns the mold with the nozzle, whereas the leader pins and bushing align the two sides of the mold. In the ejection system, the sprue puller and ejector pins, are attached to the ejector plate, which is, in turn, connected to the machine s ejection plates by the ejector rod. When the mold is opened, the sprue puller draws the part to the B side of the mold, whereas the... 

On the theoretical side, perhaps the most obvious problem is the analysis of the flow fields at the top of the filaments (the surface drawing question) and in the filament bases. The latter question is obviously related to that of the shape of the bases. The truncated cone approximation (Figure 8) needs to be improved upon. The thermodynamic quantity AG needs to be pinned down—for example, how well is it approximated by AG (This question will be of lesser importance when AG is large, because the surface free energy of the solid, will dominate the relation. When AG is particularly small, as with many substances in contact with Teflon and other low-energy solids, the contact angle will have to be included explicitly in the analysis.)... 

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