1.Open gate 1.1 the hot-runner system has processed plastic material with a certain color. 1.2 cleanup barrel by plastic material with demand color . 1.3 heat each heating zone with the temperature by 15-20 ℃ over normal production temperature .…
Barrel and plastic mold temperature during the injection molding Plastic heating time and temperature Cooling Channel Diameter of plastic mold flow length to wall thickness and cavity pressure
A hot runner injection mold is a type of injection molding system in which the plastic melt is heated and delivered to the mold via a heated nozzle. The main advantage of using a hot runner system is that it…
plastic mold maintenance 一.准備清模工具:噴槍,氣槍,手電鉆,去漬油,砂紙,碎布,油石,煤油,圓銅刷,棉花. Prepare mold cleaning tools:spray gun,Air gun,electric hand drill,Cleaning fluid , clean Cloth ,Oil stone,Kerosene,Round copper brush,Cotton. 二.用油石將公母模入子的油污清除.(400#油石) Use oil-stone to polish dirt on the inserts, which is fixed in mold cavity or core.…
Injection Molding Touble Shooting Problems Water Mark Streak Flash Weld Line Poor Surface Unfilled Burn Color Problem Deform Thick Crack Possible Reason Low Barrel Temp ● ● ● ● ● ● High Barrel Temp ● ● ● ● ● High Injection Pressure ● ● ● Low Injection Pressure ● ● ● ● Short Packing Time ● Long Packing Time ●…
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…
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.…
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.…
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…
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.…