注塑模具venting-全文預(yù)覽
【正文】 eformed Vent land, for nylon remove during tool build Efficient Venting Page 15 Taken closer in critical areas: Split line In critical areas, blend the relief channel closer to the cavity shutoff edge Can be as close as for hardened inserts, but must be machined very carefully to avoid breaking through to the cavity Efficient Venting Page 16 Taken closer to shutoff in critical area Efficient Venting Page 17 Ejector pin venting: ? Ejector pins include sleeve ejectors ? Working clearance already exists with all ejector pins ? Diameters are much easier to control to very close tolerances than other shapes ? Ejector pins are low cost parts of the tool ? They are easily replaceable ? The same venting principles apply, full width relief channel as close as possible to the shutoff with no restriction on exit to atmosphere (normally to the ejector box) ? Vent all ejector pins, not just those covered by the last flow Efficient Venting Page 18 Ejector pin venting: Full circle relief channel under end of ejector pin. As short as possible, 1mm preferred 30186。 these data may not be valid for such material used in bination with any other materials or additives or in any process, unless expressly indicated otherwise. The data provided should not be used to establish specification limits nor used alone as the basis of design。 they are not intended to substitute for any testing may need to conduct to determine for yourself the suitability of a specific material for your particular purposes. Since DuPont cannot anticipate all variations in enduse conditions DuPont makes no warranties and assumes no liability in connection with any use of this information. Nothing in this publication is to be considered as a license to operate under or a remendat
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