Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method of zero adjustment of a load cell for detecting back pressure of a screw in an electric injection molding machine










Image Number 3 for United States Patent #6615637.

A screw is incorporated into a heating barrel. A ball screw is connected to a rear end portion of the screw through a load cell, and a servomotor for injection is connected to the ball screw. First, the heating barrel is retreated and separated from a mold, and the screw is moved to the half stroke position. After the screw is advanced for a preset period of time, the servomotor is stopped by automatic decompression to detect an output of the load cell. Similarly, after the screw is retreated for a preset period of time, the servomotor is stopped by automatic decompression to detect an output of the load cell. An average of outputs of the load cell after the screw advances and retreats is calculated and considered to be an output of the load cell under no-load conditions, thereby performing zero adjustment of the load cell.








 
 
  Recently Added Patents
Bioactive agent-loaded heart-targeting nanoparticles
Vectorization of program code
High performance actuator motor
Power-on reset circuit
Vehicle drive control system
Dynamic load profiling in a power network
Data transfer operation completion detection circuit and semiconductor memory device provided therewith
  Randomly Featured Patents
Process for the preparation of 2-chloro-5-chloromethyl-1,3-thiazole
Surfactant lipids, compositions thereof and uses thereof
Virtual POS terminal
Wireless data communications using asymmetric channel allocation
Flame and spark detector, automatic fire alarm and methods related thereto
Sewage treatment apparatus including aggregate separator
Bicycle hanger
Device for opening and closing a cover of a film cartridge chamber
Billing support in a media exchange network
Housing for instrument for taking health related measurements