Mold flow analysis plays an important role in injection mold design and manufacturing process. It can help mold designers evaluate mold design plans and predict potential problems so that design corrections can be made early, thereby reducing number of mold trials and reducing production costs. Specifically, main functions of mold flow analysis include:
Optimize mold design: Through mold flow analysis, rationality of mold design can be checked, such as size and location of glue inlet, design of cooling water channels, etc., to ensure that mold can be effectively cooled and injected during production process.
Predict potential problems: Mold flow analysis can predict and check potential problems, such as position of bonding line on product surface, flow marks, injection status, underfilled areas, and whether product is deformed.
Improve production efficiency: Through mold flow analysis, optimal injection parameters, such as injection speed, injection pressure, etc., can be determined before making mold, thereby improving production efficiency.
Reduce costs: Through mold flow analysis, number of mold trials can be reduced and production costs can be reduced.
It can better reduce injection molding cycle, reduce injection time and cost.
Increase personal technical experience and capabilities and reflect personal value.
Preparation before analysis

For new molds:
During process of designing and manufacturing new molds, mold flow analysis can avoid potential problems and eliminate concerns, ensuring rationality and effectiveness of mold design.
Through mold flow analysis, potential problems that may exist in mold design can be predicted and checked, such as position of bonding line on product surface, flow marks, injection status, underfilled areas, and whether product is deformed.
Mold flow analysis can also help in determining optimal injection molding parameters to ensure that parameters such as optimal injection speed and pressure can be determined before making mold, thereby improving production efficiency.
For existing molds:
For existing problems, mold flow analysis can provide solutions to help solve practical problems currently existing in use of molds.
Through mold flow analysis, root cause of problem can be found, effective solutions can be proposed to improve and perfect design and manufacturing of molds.
During production process, mold flow analysis can also provide correct input data, including information on products, molds, raw materials, and processes, to help optimize production process , improve production efficiency and product quality.

New mold (focus on mold quality to allow mold to perform better and complete injection molding work)
Use Moldflow software to analyze and evaluate raw materials and processes. Moldflow is a software widely used for injection mold design and analysis. It can help designers evaluate mold design plans and predict potential problems so that design corrections can be made early, thereby reducing number of mold trials, reducing production costs.
Based on results of Moldflow analysis and evaluation, mold design is improved and revised. Based on analysis results, identify possible problems in mold design, such as size and location of glue inlet, design of cooling water path, rationality of parameters such as injection speed and pressure, etc., and propose corresponding solutions.
Existing Mold (Rescue Effort)
Analyze according to current process flow. This requires collecting and sorting out relevant data, including product design, mold structure, raw material properties and process parameters, etc., then using appropriate analysis tools and methods, such as Moldflow, to simulate and analyze current process flow to understand its performance in actual operations.
Evaluate based on analysis results. Based on results of simulation and analysis, current process flow is evaluated, existing problems and potential risks are identified. These issues may include product quality, production efficiency, mold life and maintenance frequency, etc. Through in-depth understanding and analysis of these issues, corresponding improvement measures and solutions can be proposed.
Design changes were made to correct problem. Based on evaluation results, current process flow will be improved and optimized. This may include changing structure of mold, adjusting process parameters, replacing raw materials, or improving production process. Purpose of these design changes is to solve problems existing in current process flow, improve production efficiency and product quality, while reducing costs and risks.
In summary, this text describes a process for optimizing and improving process flows based on results of analytical evaluations. By understanding and analyzing performance of current process in detail, targeted improvement measures and solutions can be proposed to improve production efficiency and product quality.

Through mold flow analysis and filling analysis, we can achieve following goals:
Confirm the best gate position: When conducting mold flow analysis, we can observe and analyze impact of different gate positions on filling effect, so as to find the best gate position, improve filling effect of mold and reduce defects.
Achieve balanced filling: Through mold flow analysis, we can adjust filling speed and pressure of mold so that mold can achieve balanced filling during filling process and avoid problems such as uneven filling and pressure fluctuations.
It can help design fewer runners and minimize use of raw materials: through mold flow analysis, we can optimize runner design, reduce number and length of unnecessary runners, thereby reducing use of raw materials and reducing costs.
Eliminate short shot phenomenon: Short shot phenomenon means that filling process ends prematurely and causes part of mold to be incompletely filled. Through mold flow analysis, we can adjust injection time and pressure to ensure that mold is completely filled, avoid short shots.
Confirm welding line and exhaust position: Welding line refers to line formed by meeting of two streams of material during filling process. Through mold flow analysis, we can observe and analyze condition of welding line, find the best exhaust position, avoid occurrence of pores and defects.
Estimate required injection pressure and clamping force: Through mold flow analysis, we can predict required injection pressure and clamping force, provide a reference for mold design and manufacturing, ensure that mold can work properly and produce high-quality products.

Role of pressure holding analysis:
Determine gate solidification time: Packing pressure analysis can help us determine gate solidification time to better control filling and molding process of mold.
Minimize difference in volume shrinkage in mold cavity: During pressure holding process, we can minimize difference in volume shrinkage by analyzing pressure and temperature distribution of each part of mold, thereby improving dimensional accuracy and stability of finished product.
Verify and reduce surface dents of finished product: Through pressure holding analysis, we can verify whether mold design is reasonable, while reducing surface dents of finished product, improving appearance quality and overall performance of finished product.
Determine appropriate holding pressure change settings: Packing analysis can help us determine appropriate holding pressure change settings to ensure stability and reliability of mold during filling and molding processes.
Determine the overall weight of finished product: Packing pressure analysis can also help us determine the overall weight of finished product to better control use of raw materials, optimize design of mold.