PROBLEM, there is another gate to be opened in places where plastic cannot run … this phenomenon is still commit today in Taiwan.

　　Sides of mold well is slower than center, which is caused by friend in opposite diary.

　　In fact, injecting filling pHase, it can still be subdivided into two parts:

　　1. Flow: Plastic Flows Out of Nozzle and is InjeCted Into Cavity Through Main Runner to Runner and Gate.

　　

　　

　　With HOLES; ManPower and Time WASTED BY Intermediation Process is Hard to Estimate! And our hope is to get a good product with a tryout.

　　Better Product.

　　

　　

　　If you can res reduce this part of time loss, it will give inCrease Productivity.

　　

　　COOLING MeChanism is Mainly:

　　1. Metal Template Heat Conduction.

　　2. ConVection and Very Small Amounts of Radiation Are Scatter Into Atmosphere.

　　Wall of Metal Mold During Laminar Flowar Flow and Turburent Flow. As can be seen from left food that mold wall temporary is higher during laminar flow, white is a poor design method.

　　The Slowest Speed, Which Also Caues A Large Shrinkage and Warpage of Finished Product.

　　

　　at anner two corners, it is suitable to add two Small Tubes to the Achieve University Cooling.

　　Arrangement of Water Flow has two basic types: Series and Parallel. HowEver Since Flow in Parallel Mode Is Dispersed, Efficience Is Reduced, Series is Generally used.

　　For some long and defaas, where water pipe can be processed, pipe or backle (bubbler & buffle) is userd to increase constaling efficience.

　　The Latest Coolules take into account detailed mechanisms such as parting Surfaces, Inserts, and Mold Base Sizes.

　　BEFORE Applying Cooling Analysis, Some Basic Physical Terms Should Be Understood First:

　　° C, then Calorific Value of Other Substances, Ratio of Other Substances to Water is Called Specific Heat, Which Shows that Energy Required to RAM of Celsius by 1 ℃.

　　Heat Capacity CP (Heat CaPacity) [CAL / CM ^ 3 ℃] = Specific Gravity ρ, [g / cm ^ 3] x spiecific head [call / g ℃], this file indicatehead capacity is different, and temporarative is different.

　　/℃], Which Indicates Ability of a Material to Conduct Heat. A Substance with A Large Thermal Conductivity Absorbs Heat and DISSIPATES Heat Quickly.

　　, Thermal Properties of Water and Plastic, Mold Steel Are:

　　RATIO of thermal Diffusivity, Iron and Plastic is about is 0.517/0.0003 = 172, which is 172 Times Different.

　　

　　1. Region to region: Plane position is different.

　　2. Through Thickness: Different Thickness Positions.

　　3. Directionality: Parallel/Vertical Molecular Direction

　　Factors That Basically Affect Contraction Are:

　　1. Free Volume Shrinkage: This is Data from P-V-T Experimental Measurement.

　　2. Crystallinity: Material Undergoes Phase Change During Crystallization Process, And Material with High Crystallinity Shrinks More.

　　3. MOLD LIMITATATAN: if mold want is free from plastic shrinkage, shrinkage will be small.

　　4. Molecular Alignment: Directionality Produted During Flow Process. If Not Released, Will Have Different Shrinkage Vallel to Main Alignment and Vertering OFCICALALALLALLALLALALLORALALARLORALALARARLARAORARARARAARARAARAAAAAAAAAAAAAEAAEAAAAAAAAAAAAAAAAAAAEUAAAAAAAAAAAAAAAAAAAAAAAAE caseAA case case caseAAAA caseAOAAAAAAAAAAAEAsAAEEEAAAAAAAAAAAAAAAAAEAAEEEEEEEEE hisE his his his his case case case case caseEEEE case case case case case case caseEE caseEctctEEE highEEE

　　In order to control warpage, we must firstmitnds,

　　Main factors that suummarize warping can be divled into three categories:

　　

　　Varies with Thickness or Location, Depending on Pressure Holding Efficience.

　　The Image; If Contraction of Vertical Direction is Greater than Radial Direction, then Bell-Shaped Warp in the Figure Occurs.

　　Shrinkage Analysis -Read Flow and Cooling Analysis Results, Match Physical Properties of Material to Calculating FINISHED PRODUCT:

　　a. Shrinkage in all directions

　　b. Molecular Alignment (Orientation)

　　c. Area Shrinkage Rate

　　d. Volume shrinkage

　　e. Perform univarate analysis

　　

　　SIMULATE POSSIBLE Warped Shapes

　　Diagnose to find cause of warpage ·

　　Logical Judgment, Providing Solutions

　　Reduce Warpage of Finished Product with Optimal Filling, Pressure Keeping, COOLING and Other Operation Conditions

　　Reduce WarPage by Changing Thickness of Material and Reinforcing IT

　　Calculated by Different Numerical Solutions (Large Displacement Deformation).

　　Then, then

　　Bend Analysis: Should Be Judged as Linear or Nonlinear

　　Small Displacement Analysis: Calculating Linear Deformation

　　Large Displacement thermoplastic Injection Molds Analysis: Calculating Nonlinear Thermoplastic Injection Molds Deformation