baybak 4434 ارسال شده در 18 آبان، 2010 برگرفته از سایتdmeuniversity This animation shows a typical method to eject the cooled part from the mold. Round ejector pins are used to force the molded part out of the open mold. In this unit you will learn about ejector pin types, their application, and actuation ادامه تصاویر در این برای مشاهده این محتوا لطفاً ثبت نام کنید یا وارد شوید. ورود یا ثبت نام 3
amin 202 مهمان ارسال شده در 22 بهمن، 2011 Ejector Pins & Sleeves This animation shows a typical method to eject the cooled part from the mold. Round ejector pins are used to force the molded part out of the open mold. In this unit you will learn about ejector pin types, their application, and actuation. Ejector Systems This animation shows a Pin Type Accelerated Ejector. Accelerated ejectors help to eject molded parts that tend to stick to a core, causing a normal ejector pin set-up to damage and/or stress the ejected article. This unit will cover a few of the typical ejection systems. Molding Internal Threads This animation shows a typical rack and pinion unscrewing mold. The internal molded threads act as an undercut to prevent normal ejection. The threaded core must be unscrewed out of the cap before ejection. This unit will cover more about molding internal threads. Mold Plate Control The animation shown uses an external Latch Lock System to control stripper plate opening. The mold parting line is allowed to open to a set amount, then the stripper plate is locked while the mold continues to open. Controlling plate action can shorten cycle time and increase production. Early Return Systems This animation shows a Toggle-Lock System for early ejector assembly return. The ejector pins must be returned before the cam pins contact and move the slide blocks in, or mold damage will occur. This unit will also cover an internal early return system Molding Part Geometry This animation shows a system used to mold an undercut and then release it during part ejection. Special mold designs and systems are required to eject undercuts or restrictions. This unit will cover some typical methods used.
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