Presence Sensing Devices
Improve efficiency and increase safety in your workplace with the installation of presence sensing devices. Presence sensing devices are a safety tool that provides a machine operator’s hands total freedom while working–preventing injury. Presence sensing devices react when an object breaks an invisible plane or barrier increasing operator safety.
The purpose of a light curtain is to protect the operator from making contact with any part of the press brake that could potentially cause harm during operation. When properly implemented, a light curtain stops the press brake abruptly before the operator can sustain any injuries. There are numerous regulations in place to ensure the effectiveness of light curtains that determine whether or not a system passes inspection. It’s essential to adhere to all of the regulations that coincide with the type of press brake system you operate. Light Curtains also make it possible to use a foot switch instead of a two hand push button station.
How A Light Curtain Provides Press Brake Safety
A light curtain is a type of presence sensing device that doesn’t reduce productivity or delay work because it uses no restraints, straps, or physical barriers. It functions by way of one or more transmitters and receivers. If the stream of light or lasers is broken and the receiver no longer detects it, the machine ceases immediately.
Many light curtains have a floating beam option, individual or multiple infrared beams may be broken by the part being formed. Some light curtains allow up to eight inches of beams to be floated.
Channel Select or Canceling
Beam canceling is an option on some light curtains. Canceling beams allows you to blank out or ignore a given number of the beams. It is a very useful option if used properly and safely. Some light curtains can be programmed to selectively cancel a given number of beams during the forming operation.
The Advantages of a Light Curtain
Light curtains can be highly effective if used properly. Although the initial cost of a light curtain press brake safety system may be much higher than using restraints, physical barriers, and two-handed manual start systems; they allow the production process to operate at full capacity. The savings in manpower time and production speed more than balance the initial cost of a light curtain system.
Functions Must Be Programmed According to OSHA
OSHA stipulates exactly how presence sensing devices of all types must be used in order to pass minimum safety regulations. OSHA standards and regulations include adequate safe distance for the machine they’re used with, software programming, and more.
Laser Beam Device
A laser beam device is a highly efficient type of presence sensing device for press brake safety. Laser beam devices are the most modern and eventually cost effective way to fully protect the operator while allowing productivity to flow at maximum capacity. They don’t restrict or hamper the press brake or the press brake operator in any way as long as nothing comes in contact with the stream of laser beams directly in front of and behind the die.
How Does a Laser Beam Device Work?
A stream of laser beams is created by a transmitter on one side and a receiver on other. The stream can vary in length, but typically only covers key areas of risk while other areas that are not dangerous but may be within the lasers’ range can be ‘muted’. Laser beam device systems also incorporate the use of a foot pedal.
Laser Beam Device Object Detection
If the laser beam device detects an object entering the area of contact by stream disruption, the die immediately gets retracted before anyone can possibly be injured. Since there is a beam that passes between the punch and the die, the operator remains protected up to a matter of millimeters.
Laser beams can be used for press brake safety either in parallel rows or in a grid. A grid works the same as a row, detecting disruptions in the stream and immediately ceasing machine operation. Special modes can be programmed in the laser beam device’s software that most effectively protect the operator while not impeding production rates.
Are Laser Beams and Light Curtains for Press Brake Safety the Same?
Light curtains are also presence sensing devices, but they don’t project the same kind of light. A laser beam device can perform far more accurately, allowing operators to perform tasks within very tight spaces safely.
Laser beam devices for press brake safety should be fully OSHA standards compliant when properly installed and used. This includes all of the necessary installation components. Usually, a laser beam device is customizable and should be installed by a qualified electrical/mechanical technician.