Injection Mould Construction

A molding according to the function of each of its parts can be divided into four sections 1. Introductory part of the plastic nozzle into the cavity cavity 2. penunjuang system (support system) 3. demolding system 4. heat transfer system

Wednesday, June 25, 2008

Other Joint Construction Betwen Cooling in cavity and Mold base with O Ring

What is O ringo-ring is a loop of elastomer with a round (o-shaped) cross-section used as a mechanical seal or gasket. They are designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. (wikipedia.com)O-Rings are torus-shaped (i.e....

Sunday, June 22, 2008

Construction of Cavity Cooling and Mold Base Cooling, O ring

here the basic construction of joining cavity cooling and mold base cooling, we can use from simple construction to joint cavity and mold base cooling with one O ring, or we can use more complex construction like using special plate, and various O ring seal type. here is basic construction to joint...

Tuesday, June 17, 2008

Straight Type Cooling for Cavity

Basically cavity system cooling can divide into two type 1. straight type2. Circular typestraight type system, usually have in and out of water pipe in not same side of mold or cavity. look at picture belowalthough the pipe that cool of insert part doesn't straight, but if inlet and outlet cooling fluid...

Saturday, June 7, 2008

Fill time runner balance on 6 cavity of mold

runner balance is important when we works with more than 1 cavity in mold design, unbalancing runner can cause various like unfill mold (short shot), weld line, air traps, burning and others.from previous post that talk about design of runner balance in 6 cavity, now let's prove it by simulation of...

Sunday, June 1, 2008

Runner Balance Layout for 6 cavity of mould

Picture below shown layout model for 6 cavity product, star layout used to connecting 3 cavity, then connected again with straight line. distance between one cavity to another is sameTop view3D viewbecouse flow at nearest sprue is faster than other, although the distance from the branch to gate is same,...