Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optimization of overmolding method for three-dimensional hollow molded article










Image Number 102 for United States Patent #5942169.

A method of over-molding used to produce a three-dimensional hollow molded article employs a core made of resin having a hollow portion. The core is placed in a cavity of a mold. Molten resin is injected into a space formed by the core and a cavity wall of the mold through a resin injection portion. In this way at least part of the outer surface of the core is covered with resin. Deformation of the core due to the pressure of the resin during injection is prevented in one of a number of different ways. The over-molding method is optimized by calculating a temperature distribution and a pressure distribution of the molten resin in the step of injecting the molten resin into the space by numerical analysis. The displacement distribution and for the stress distribution of the core caused by pressure applied to the core by flow of the molten resin is calculated by a numerical analysis on the basis of the calculated temperature distribution and pressure distribution. The form of the hollow molded article, the form of the core, the form of the mold, and the molding conditions can thereby be optimized on the basis of at least one of the calculated displacement distribution and the stress distribution so as to minimize deformation of the core.








 
 
  Recently Added Patents
Rotating sunlight/light beam for fractional/beneficial use
Mobile terminal based on W-CDMA system having receive diversity function and system thereof
Method for measuring and improving organization effectiveness
Coding circuitry for difference-based data transformation
Optical switching device and communications system
Systems and methods for performing live chat functionality via a mobile device
Puncture resistant fabric
  Randomly Featured Patents
Air-assisted drain with pressure cutoff valve
Watch with indicator of lunar phases
Image forming apparatus having transfer device provided in contact with image carrying body
System and method for RFID asset monitor
System and method for serializing bulk virtual circuit connection requests
Active control of vibration
Price optimization with rule relaxation
Liquid crystal display and thin film transistor panel therefor
Knockdown display stand
Method and system for deriving data through interpolation in a database system