Website map|Add to favouritesWelcome to Ahead Technology(Shen Zhen) Co.,LTD

AHEAD product
Current location: Home»AheadMold News » Ahead News » MPI Modules

MPI Modules

Categories: Ahead NewsStars: 3Stars Visit: - Release time: 2015-12-21 14:25:00
Font size:【 Large Middle Small Source: Editor:

MPI Modules --- Aheadmold

1.    MPI/Flow
MPI/Flow simulates the filling and packing phases of the injection molding process to predict the flow behavior of thermoplastic melts so you can ensure parts of acceptable quality can be manufactured efficiently.
Using MPI/Flow, you can
    predict and visualize the flowfront progression to see how the mold fills;
    determine injection pressure and clamp force requirements;
    optimize part wall thickness to achieve uniform filling;
    minimize cycle time, and reduce part cost;
    predict weld line locations and either move, minimize, or eliminate them, identify potential air traps and determine locations for proper mold venting;
    optimize process conditions such as injection time,    injection velocity profile, melt temperature, packing pressure, packing time, and cycle time;
    determine areas of high volumetric shrinkage that could cause part warpage problems;
    determine gate freeze time.

2.    MPI/Cool
MPI/Cool provides tools for modeling mold cooling circuits, inserts, and bases around a part and analyzing the efficiency of the mold's cooling system.
MPI/Cool simulations allow users to:
    optimize part and mold designs to achieve uniform cooling with the minimum cycle time;
    view the temperature difference between the core and cavity mold surfaces;
    minimize unbalanced cooling and residual stress to reduce or eliminate part warpage;
    predict temperature for all surfaces within the mold: part, runners, cooling channels, inserts;
    predict the required cooling time for the part and cold runner to determine overall cycle time.

3.    MPI/Warp
MPI/Warp provides users with an understanding of the causes of shrinkage and warpage in injection molded plastic parts and predicts where deformations will occur.
MPI/Warp allows you to:
    evaluate final part shape before machining the mold;
    evaluate both single cavity and multi-cavity molds, scale shrinkage and warpage results for better visualization of deformation;
    query any two points to determine any dimensional change between the two;
    constrain the part on a plane for better measurement of deflection;
    separate total displacement into X-, Y-, and Z-axis displacements to show only the deflection in each direction;
    show shrinkage and warpage as a visible displacement plot or as a color contour or shaded plot;
    export warp geometry in the STL format to use as a reference when sizing the mold;
    export warp mesh model for an iterative warpage analysis.

4.    MPI/Fiber
MPI/Fiber predicts the fiber orientation due to flow in fiber-filled plastics and the resultant mechanical strength of the plastic/fiber composite.
It is important to understand and control the orientation of fibers within fiber filled plastics to reduce shrinkage variations across the molded part to minimize or eliminate part warpage.
MPI/Fiber allows you to:
    predict fiber orientation and thermo-mechanical property distributions in the molded part;
    predict elastic modulus and average modulus in the flow and transverse-flow directions;
    predict linear thermal expansion coefficient (LTEC) and average LTEC;
    calculate Poisson’s Ratio, a measure of the transverse contraction of a part compared to its length when exposed to tensile stress;
    optimize filling pattern and fiber orientation to reduce shrinkage variations and part warpage;
    increase part strength by inducing fiber orientation along load bearing part surfaces.

5.    MPI/Optim
MPI/Optim allows you to perform an injection molding machine-specific analysis which takes into account the actual machine response time, maximum injection velocity,  and  the number of steps that can be programmed for velocity and pressure profiles on the machine controller. The analysis aim is to achieve uniform flow front velocity and temperature profiles through the injection molding machine nozzle, the mold feed system, and the part cavities.
MPI/Optim allows you to:
    automatically determine the optimum processing conditions, including stroke length, injection velocity profile, velocity-to-pressure switch-over, and pressure profile, required to produce a part of acceptable quality given a mold, machine, and material combination;
    implement the optimum setup conditions directly on the molding machine;
    take into consideration key quality criteria for the part, including control of short shot, flash, warpage, the desired dimensional tolerance, flow front velocity, constant flow front temperature, and frozen layer thickness.
6.    MPI/Stress
MPI/Stress is a structural analysis product for optimizing the structural integrity of plastic injection molded parts. It considers the effects of plastic flow during injection molding and the resultant mechanical properties on the component’s structural integrity, ensuring it is fit- for-purpose and will not fail in use, well before mold trials or production, when the cost of change is high.
MPI/Stress allows you to:
    predict stresses and product deflections that result from external loads and temperatures;
    account for the effects of processing on mechanical properties of the part and the orthotropic (direction dependent) properties of injection molded components;
    evaluate whether a structural part, previously made from metal or other materials, can be successfully made from plastic;
    enable  iterative  optimization  of  part  design  to  ensure  the  molding  will  meet  final product strength and stiffness specifications;
    eliminate the need to over-engineer parts, using unnecessary costly engineering mate- rials and thicker wall sections to achieve structural requirements.
7.    MPI/Shrink
MPI/Shrink predicts polymer shrinkage based on the effects of processing and grade- specific material data and offers a true prediction of linear shrinkage independent of warpage analysis. Because plastic parts shrink as they cool, it is essential to accurately account for this shrinkage in the design of the mold so that critical product tolerances can be met.
MPI/Shrink allows you to:
    provide precise, optimum shrinkage values and predict shrinkage variations across the mold, so that mold design can be refined to compensate for these variations;
    enable control of molding conditions, gate location, and material grade selection to ensure specified part dimensions will be achieved;
    understand the effects of processing on shrinkage;
    replace the traditional “best-guess” approach for determining shrinkage values;
    eliminate the need to cut the mold under size and re-machine to finished size after mold trials;
    eliminate the need to push molding conditions to the limit to achieve the required dimensions;
    ensure the mold produces parts that are within critical tolerances, thereby reducing reject rates;
    eliminate the need to adjust molding parameters to give the required dimensions, which often results in molding far from optimum conditions, resulting in long cycle times and surface defects;
    decrease the need for prototype tooling;
    evaluate the performance of different materials.

8.    MPI/Gas
MPI/Gas simulates the gas-assisted injection molding process, where gas, usually inert nitrogen, is injected into the polymer melt. The gas drives the polymer through the mold cavity to complete mold filling and create a network of hollow channels throughout the component. Combine MPI/Gas with MPI/Cool, MPI/Fiber, and MPI/Warp to help determine where to put polymer and gas entrances, how much plastic to inject prior to gas injection, where to place gas channels, and how large to size them.
MPI/Gas allows you to:
    evaluate the filling pattern with the influence of gas injection to aid in part design, gate placement, and process setup;
    link  to  MPI/Cool  to  evaluate  mold  cooling  with  the  influence  of  gas  injection  to optimize mold cooling design and minimize cycle time;
    link to MPI/Warp to predict part shrinkage and warpage with the influence of gas penetration to determine final part quality;
    link to MPI/Stress to apply in-service loading to determine part performance with gas channels;
    properly size gas channels for optimal filling and gas penetration;
    determine the best gas channel layout to control gas penetration, inject gas at any location or in multiple locations within the part or runner system;
    inject gas through multiple gas pins simultaneously or at different times during the process;
    detect areas of poor gas penetration or other problems, determine the proper shot size to avoid gas “blowout”;
    optimize injection speed profile for the plastic injection stage;
    determine injection pressure and clamp force requirements for proper molding machine selection;
    incorporate delay time prior to injecting gas allowing thin areas to solidify;
    automatically determine gas pressure required to avoid short shots, melt-front hesitation, or burning;
    determine final part weight after gas injection to help maximize material savings and minimize weight;
    estimate the final wall thickness after gas penetration;
    accurately identify weld (knit) and meld lines based on part design and gate placement
    accurately identify air traps for proper mold venting.

9.    MPI/Co-Injection
MPI/Co-Injection is an ideal molding process for using recycled materials or achieving specialized cosmetic and structural objectives. MPI/Co-Injection provides an invaluable tool for simulating the sequential co-injection process, where a skin material is injected first, followed by the injection of a different core material.
MPI/Co-Injection allows you to:
    evaluate the flow front pattern of two co-injected materials to aid in part design and gate placement;
    predict the extent of penetration of the core material and whether it will break through the skin material;
    determine injection pressure and clamp force requirements for proper molding machine selection;
    balance and minimize runner systems to achieve uniform cavity filling with reduced scrap or regrind material;
    determine  the  best  transition  point  for  switching  from  skin-material  injection  to core-material injection;
    place gate locations to minimize injection pressure and clamp force;
    simulate different inlet melt temperatures for skin and core materials;
    automatically incorporate the recommended ram-speed profile from MPI/Flow to reduce overshearing of the plastic during filling;
    accurately identify weld and meld lines based on part design and gate placement.

Article come from China injection tools maker - AHEADMOLD, website is WWW.AHEADMOLD.COM.

Previous page:CAE Example of MPINext page: MPI Introduction


Ahead Technology(Shen Zhen) Co.,Ltd No.36 Shiwei Pinggang Industrial Area, Jiangshi Community,Gongming Street, Guangming New District, Shenzhen, China 518106

Phone: +86-755-23426229

Fax: +86-755-29904981

Stay in Touch

Sign up for our newsletter to receive event updates and exclusive offers

  • Email Address:
  • Leave your words here: