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
Scalable header extension
Nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and its methods of preparation
Portion of display panel or screen with an icon
Image processing apparatus, image printing apparatus and printing data generation method
Probe for ultrasound diagnostic apparatus
Methods and systems for motion estimation with nonlinear motion-field smoothing
UV liquid treatment system
  Randomly Featured Patents
Non-contact resistivity measurement apparatus and method using femtosecond laser pulses to create an electron flow
Leak detection in heating, ventilating, refrigeration, and air conditioning systems utilizing adsorptive materials
Surface treatment apparatus
Semiconductor optical modulator, optical multiplexing module, and control method thereof
Method and apparatus for making and processing aberration measurements
Rotation anode X-ray tube
Method for producing a tungsten carbide tip punch
Mop construction
Method and system for rendering of labels
Method and apparatus for processing receptacles of items in a materials handling facility