28 Oct 2023 click : 186Safety light curtain is widely used in: assembly line, elevator, restricted area, dangerous area, paper cutting machinery, leather machinery, woodworking machinery, forging machine, punching and shearing machine, palletizing system, textile machinery, lifting platform, slaughter machinery and other fields of safety testing, can reliably protect the safety of people or objects.
From the perspective of the resolution of application products, products of 30MM and above occupy 87% of the market share. Among them, the safety light curtain products used to protect the palm resolution of 30MM (optical axis spacing of 20MM) and protect the arm resolution of 50MM (optical axis spacing of 40MM) are the most concentrated.
At present, 71% of the products in the safety light curtain market are applied to mechanical point protection, and 29% of the products are applied to the protection of channel entrances and hazardous surrounding areas. From the perspective of the market business performance of each competitor, European and American companies mainly promote safety light curtains through engineering projects, mainly used in the automotive industry, packaging industry and rubber and plastic industry, for access or hazardous area protection; Japanese, South Korean, Taiwan and mainland enterprises mainly carry out business through cooperation with mainland machinery and equipment manufacturers, while focusing on the development of spare parts and machinery and equipment after assembly market.
When separating the human body from the dangerous source of the machine, we cover the dangerous parts with protective barriers, and add doors to the parts that need to be repaired.
However, the work piece on the machine needs to be sent in and out, and there needs to be an opening part. A light curtain is a device for protection by a light beam located at these openings.
This is a sensing device mounted from top to bottom with a row of optical switches, which monitors a certain amplitude range. When a human body breaks into the machine during operation, it will cut off the light and stop the machine to achieve the purpose of protecting personal safety, so the IEC standard has provisions for its performance and safety (IEC61495, JISB9704). When used for the purpose of protecting people, in addition to the light curtain that meets this safety standard, other cannot be used casually.
Essential functions of the light curtain:
In the IEC standard, the electronic Protective Equipment ESPE(Electro Sensitive Protective Equipment)
The light curtain is specified as one of the ESPE, and the specific standards are as follows:
1, with a dangerous fault holding detection function
2, with a certain level of interference resistance
3, the emission Angle of light must be below a certain standard
