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Title:
HYDRAULIC DRAFTING DEVICE USED FOR COMPACT ROLLING MACHINE OR ROLL PRESS MACHINE, AND HYDRAULIC CONTROL METHOD BY HYDRAULIC DRAFTING DEVICE
Document Type and Number:
Japanese Patent JP2017144462
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic drafting device that does not use a hydraulic control servo valve corresponding to plate thickness accuracy in a compact rolling machine or a roll press machine.SOLUTION: This hydraulic drafting device is provided with: a screw that moves a piston arranged in a boosting cylinder back and forth; and a motor that applies a rotational force to the screw, freely controls the rotational angle of the screw, and moves a piston position to a target position. A drafting cylinder connected from the boosting cylinder through piping can push up/down a pressure roll by vertically moving a ram in the drafting cylinder by an oil movement generated by the movement of the piston in the boosting cylinder.SELECTED DRAWING: Figure 1

Inventors:
YANAI KATSUHIKO
MORI SHIGERU
Application Number:
JP2016027575A
Publication Date:
August 24, 2017
Filing Date:
February 17, 2016
Export Citation:
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Assignee:
ONO ROLL KK
International Classes:
B21B13/02; B21B31/32; B30B1/32; B30B3/00; F15B3/00; F15B11/028
Attorney, Agent or Firm:
Nichimine International Patent Office