Patent · US Active

Roll mill with automatic control of roll-to-roll distance and inter-roll pressure

US8172166B2 · kind B2 · utility

2Cited by
4References
19Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 3, 2009
Grant dateMay 8, 2012
Priority date—
Expiry dateMay 22, 2030

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB02C25/00
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A roll mill for a milling-dispersing treatment has a fixed roll fixed to a frame, and a transfer roll displaceable into and out of contact with the fixed roll in a direction perpendicular to the fixed roll by a servomotor and a ball screw. A laser sensor disposed between the fixed roll and the transfer roll measures the distance between the rolls, and a load sensor measures a pressing force between the rolls. An electronic automatic control device maintains a constant distance and a constant pressing force between the fixed roll and the transfer roll by feedback of detection signals sent from the respective sensors, wherein the servomotor is driven by the electronic automatic control device to adjust the position of the transfer roll.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.