Title:
SAFETY DEVICE OF PROCESSING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/181815
Kind Code:
A1
Abstract:
An intruding object detection device (20) is attached at a side perpendicular to the moving direction of a movable body (upper table 1) in a processing machine. The intruding object detection device (20) is provided with a light projection unit, a light reception unit, a distance calculation unit, and an operation permission signal output unit. On the basis of high frequency signals, the light projection unit projects high frequency light between the movable body and a fixed body (lower table 2). The light reception unit generates a light reception signal on the basis of the light that enters therein. When an intruding object is present between the movable body and the fixed body, the distance calculation unit calculates the distance from the intruding object detection device (20) to the intruding object. If the distance calculated by the distance calculation unit is not within a pre-set reference distance, the operation permission signal output unit outputs an operation permission signal that permits operation of the processing machine, and if the distance is within the reference distance, the operation permission signal output unit stops the output of the operation permission signal.
Inventors:
AOKI TAKAYUKI (JP)
Application Number:
PCT/JP2019/011028
Publication Date:
September 26, 2019
Filing Date:
March 18, 2019
Export Citation:
Assignee:
AMADA HOLDINGS CO LTD (JP)
International Classes:
B21D5/02; B21D55/00; B23Q11/00; B30B15/00
Foreign References:
| US6243011B1 | 2001-06-05 | |||
| JP5221567B2 | 2013-06-26 | |||
| JPH07275942A | 1995-10-24 | |||
| US20160327639A1 | 2016-11-10 | |||
| JP2017205772A | 2017-11-24 | |||
| US20110298579A1 | 2011-12-08 | |||
| US20160327649A1 | 2016-11-10 | |||
| US20160298809A1 | 2016-10-13 |
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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