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
Electric washing machine
Dual gate electronic memory cell and device with dual gate electronic memory cells
Process for making thermoplastic polymer pellets
Fluid pressure responsive electric switch
Semiconductor overlapped PN structure and manufacturing method thereof
Adhering composition and method of applying the same
Dithering method and apparatus
  Randomly Featured Patents
Methods and apparatus for conformal doping
Organosiloxane foams
Cushioning net structure and production thereof
Method for controlling the operation of a glow-plug in a diesel engine
Apparatus for measuring curvature of magnetic read/write head sliders
High frequency heating apparatus with steam generator
Arrangement for fastening a monitor to a text station
Mobile communication terminal capable of editing avatar motions and method for editing avatar motions
Semiconductor analog switch circuit with compensation means to minimize offset of output voltage
Cooling pad