surface roughness
Surface Ra of different plastic molding material Ra index arrange μm 0.012 0.025 0.05 0.1 0.2 0.4 0.8 1.6 3.2 6.3 12.5 25 inject Thermoplastics PMMA 0.025 0.05 0.1 0.2 0.4 0.8 1.6 ABS 0.025 0.05 0.1 0.2 0.4 0.8 1.6 AS 0.025…
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Address: Mould City,Huangyan CN 318020
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Phone: +86 159 6865 2523
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Email: sales@plasticmoulds.net
plastic mold
mold preservation
Routine washing and appropriate preservation are critical for retaining the life span of a custom mold. In case preventative preservation procedures are persistently and correctly carried out, they reduce the expense of ownership and raise manufacture good quality: a win-win…
slider and cam
Sliders :after plasticmold open,the cam and sliders have the relative movement trend, which trend makes the slider has 2 movement directions , opening direction and the horizontal direction .then the undercut could be released from the mold. figure Suitable for thin mold plate and upper fixed plate screwed with the A plate with longer march surface , better stability Suitable for thick mold plate , the big mold space,two-plate mold and three plate mold Matching surface L≧1.5D(D cam diameter ) better stability Suitable for thick mold plate , two-plate mold and three plate mold， mating surfaces L≧1.5D(D cam diameter ) Poor stability,hard machining.…
standard parts in mold tools
While the use of standard parts in mold tools has many advantages, it can take a long time to incorporate them in to mold tool designs as a. great deal of information has to be looked up in the catalogues.…
mold components
Standard mold parts are used extensively in almost all modern injection mold tools. Only a few special-purpose tools are constructed from Scratch, without taking advantage of the standard components available. Even these tools would have a small number of standard…
gate land and gate diameter
The gate land should be as short as possible to achieve lower pressure for filling and to improve de-gating by minimising the height of gate vestige. The only reason for not using very short lands is the loss of strength…
Gating Design Rules
The gate design should deliver a rapid, uniform and preferably Linidircctional mold-filling pattern,the gate location should allow the air present in the cavity to escape during the injection phase. Failure to vent the air will result in short shots or…
A gate is a small opening
A gate is a small opening (or orifice) through which the poly melt enters the cavity. Gate design for a particular application includes selection of the gate type, dimensions and location. The gate design is largely determined by: The part…
Runner System Design Rules
Runners must be designed to fill the cavity rapidly, routine design must provide for easily ejection and easy removal (de-gating) from the molded part. For multi cavity system, balanced runner layout is practical for the best uniformity and part quality.…
Runner Cross-Section and Layout
The purpose of the runner is to transport the melt from the sprue to the gates. There are three basic parameters for runner geometry: The cross-sectional shape The diameter The cavity layout The most efficient runner section is the full…