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
Data recording apparatus with recording control based on defect block and control method thereof
Storage device, data processing device, registration method, and recording medium
System and method for storing redundant information
System and method for determining a characterisitic of an object adjacent to a route
Rotating-body electrification mechanism, image carrier unit, process cartridge, image forming apparatus, and method for electrifying image carrier unit
System and method for receiving MBMS broadcasting service
Translucent internal graphics enhancement
  Randomly Featured Patents
Bandwidth management system and method for guaranteeing quality of service in voice over internet protocol network
Stable three-phased emulsions
Manufacture of banded pistons
Low frequency digital notch filter
Nutritional composition for the treatment of pressure ulcers
Method for remote power fail detection and maintaining continuous operation for data and voice devices operating over local loops
Method for forming a locking enclosure
Method and apparatus for preventing the adherence of polarized foreign particles to paper machine components
Visually identifiable optical element
Electro optic voltage sensor with optic fiber