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
Image forming apparatus and information processing apparatus
Television apparatus
Integrated circuit packaging system with heat slug and method of manufacture thereof
Chain link
Methods and systems for assessing sales activity of a merchant
Method and apparatus for communication
System and method for displaying a constant time selection context menu interface
  Randomly Featured Patents
Cement retarder and cement retardative sheet
Solid state storage element and method
Polysilicon etching method
Object holder for office-type chairs
Thermoplastic polymer composition
Aromatic and aliphatic sulfonates and properties and applications thereof
System and method for encoding and decoding using texture replacement
System for controlling an electric motor of a fan associated with heat exchangers in a motor vehicle
Display
Device for detecting remaining level of toner