Resources Contact Us Home
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
Low power voltage controlled oscillator (VCO)
System and method for converting biomass to ethanol via syngas
Systems and methods for selective text to speech synthesis
Wearable display device
Device and method for processing input data of protective relay
Managing imaging of computing devices
Multiple CQI feedback for cellular networks
  Randomly Featured Patents
Multi-point locking system
Surface wave plasma processing apparatus
Limiting amplifiers
Electrical connector with terminal position assurance component
Portion of a shoe upper
Method and system for processing multicast packets
Ladder leveler
Recording-location determination
Method of manufacturing polyester granules with improved photochemical and thermal stability, and its application
Coaxial connector with a cable receptor with an outer contact