Stripper Ejector Construction (step by step mold design) part 6

now, after put sprue bush and locating ring at top plate, let's design core side, like cavity block, core block also need bolts to attach the core block to core plate, see picture belowat those picture i use M10 bolts type, this bolts use to attach the core block to mold base plate, don't forget to...

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Stripper Ejector Construction (step by step mold design) part 5

next step let's put sprue bush at top plate until directly to product, beside sprue bush i put locating ring, this two part important become guide between mold and injection machine, sprue bush will guide molded plastic to runner, because this product use direct gate, runner also direct from runner...

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Stripper Ejector Construction (step by step mold design) part 4

on the step below we design bolts position to hold the cavity insert to top plate of mold base, i use M10, or you can use other bolts base on your strength calculation and available market, there are various bolts type available on the market, i prefer use socket head screw in mold design, see link...

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Circular H type Runner Layout in Mold Design

It’s called H type because the runner shape from the top similar with “H”, it’ use in both circular layout and rectangle layout system, in circular type the runner doesn’t similar with H but it more similar with fork, circular type use in various type of product, like gear, cylinder shape, etc. Total...

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direct circular runner system and direct rectangle runner system in mold design

continuing previous post about sleeve ejector system in mold, now let's learn how to choose runner layout, and lay outing the cavity and core,From picture above space that available for layouting cavity core is 40 mm X 40 mm, from those available space we must design effective and cheap runner cost,...

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Mold Cavity Core Construction for Sleeve Ejector System

continuing from previous post about sleeve ejector system, below the explanation of cavity and core constructions Cavity Construction Basically cavity consist of : cavity main insert, and cavity insert, for this product, we use cavity main insert shape like pin, and to release air trap, we put cavity...

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Sleeve ejector system

This system use when part have tolerance or good dimension so, so we can’t put ejector in those face, or ejector prohibited in that face other reason is part have hole and face that can touch with ejector is very small and surrounding the hole. Look at picture below Red face indicated that ejector...

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Stripper Ejector Construction (step by step mold design) part 3

after make insert like in posting number 2, let's make main construction of ejector stripper plate, simple ejector stripper plate consist of three main part 1. ejector plate2. bolts for clamp3. ejector pinthose plate main function is to push product when ejecting, isn't need much part of plate surface...

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