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Safety light curtain sensor without dead zone

A technology of safety light curtains and sensors, which is applied in the direction of maintenance and safety accessories, optical device exploration, metal processing machinery parts, etc., can solve the problems of blind spots and hidden safety hazards in light curtain sensors, and achieve the elimination of detection blind spots, improve safety performance, Increase the effect of extension modules

Inactive Publication Date: 2010-10-20
上海中护电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that existing light curtain sensors have blind areas, which are prone to safety hazards, and proposes a safety light curtain sensor without blind areas, which effectively eliminates detection blind areas

Method used

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  • Safety light curtain sensor without dead zone
  • Safety light curtain sensor without dead zone
  • Safety light curtain sensor without dead zone

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Embodiment Construction

[0010] Such as figure 1 The schematic diagram of the use of the traditional light curtain sensor shown in the figure shows that there is a large detection blind spot between the machine tool 3 table and the first light at the bottom of the light curtain composed of light emitter 1 and light receiver 2. Hands can completely invade, and the light curtain sensor cannot detect Sending out an alarm signal will cause personal danger.

[0011] Such as figure 2 , 3 The schematic diagram and appearance structure diagram of the safety light curtain sensor without blind zone are shown. This light curtain sensor without blind zone adopts the way of output line 4 side outlet, and the extension module 5 is installed at the bottom of the light emitter 1 and light receiver 2 to detect the position of the blind zone. It is internally connected with the light curtain sensor. In order to prevent the increased light beam from shining on the machine tool 3 table, the extension module 5 uses the...

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Abstract

The invention relates to a safety light curtain sensor without a dead zone, which comprises a light projector, a light receptor, a machine tool, an output line and two extension modules. The extension modules are arranged at the bottoms of the light projector and the light receptor respectively and are in internal connection with circuits of the corresponding light projector and light receptor; and the output line is positioned on the outer side edges of the extension modules. The detection dead zone is effective eliminated and the safety performance of the light curtain sensor is greatly improved by adding the extension modules and changing the outgoing direction.

Description

technical field [0001] The invention relates to a safety control system of a machine tool, in particular to a safety light curtain sensor without a blind zone. Background technique [0002] With the rapid development of China's industrial automation, a large number of stamping machine tools have begun to be used, and the resulting safety issues have attracted more and more attention. In 2004, the latest national standard equivalent to IEC61496-1 / 2 "Mechanical Electrical Safety Electrosensitive Protection Device" GB / T 19436.1 / 2-2004 was implemented. In order to protect the safety of operators, safety light curtain sensors have become a must for stamping machine tools. Equipped with electro-sensitive protective equipment (ESPE). Regarding the use of the safety light curtain sensor, in the current known technology, the safety light curtain sensor is installed on the front of the stamping machine tool or the periphery of the working robot. When someone enters the dangerous area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q11/00G01V8/12
Inventor 梅豪
Owner 上海中护电子有限公司
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