Our safety switches can be installed on a variety of equipment such as riveters, punches, spot welders, and staking machines. The simplicity of design is the key to providing years of maintenance-free operation.
The Protectoswitch is supplied with a straight 24″ long aluminum probe that must be shaped to the configuration of both the lower and upper tooling. Plastic sleeves are available in 1 1/2″ and 2 1/4″ and 3″ diameters for adapting to the end of the probe.
The Black & Webster Protectoswitch is an ideal way to protect your operators from pinch point accidents.
How it works
When the operator initiates a foot switch to activate the machine, the Protectoswitch intercepts the start signal and automatically drops a probe around the work area. If an obstruction is sensed the machine will not fire until the obstruction is removed. If the work area is free of obstructions, the probe falls to its full stroke, which closes an actuating switch to fire the machine.
Safety Switch Information
Black & Webster Protectoswitch Model Comparison
|Cycles per Minute||40 max.||80 max.||80 max.|
|Housing||9 3/8″ H x 4 5/8″ W x 2 1/2″ D||9 3/8″ H x 4 5/8″ W x 2 1/2″ D||9 3/8″ H X 4 5/8″ W X 2 1/2″ D|
|Weight||5 lbs.||5 lbs.||5 lbs.|
|Power Requirements||Electromechanical operation, 115V, 60HZ, 1ph||Pneumatic operation, air requirement 50 – 100 psi||Electro-pneumatic operation, air requirement 60-100 PSI supply pressure|
Sequence of Operation
Electric Safety Switch
Upon activation, the solenoid retracts, the probe arm falls to the work area allowing the spring-loaded switch with roller to enter the detent on the probe shaft closing the circuit to the machines firing mechanism and allowing it to fire.
Pneumatic Safety Switch
Upon activation the air cylinder retracts, the probe arm falls to the work area where the shaft carriage meets the sensing collar causing a pneumatic signal to fire the machine. The start valve must be released and the prove returned to the up position before subsequent operation is permitted.
Electro-Pneumatic Safety Switch
Upon activation the air cylinder retracts, the probe arm falls to the work area allowing the spring loaded switch with roller to enter the detent on the probe shaft causing an electrical output signal to cycle the machine. The Protectoswitch valve is released allowing the probe arm to retract to full up position before a subsequent operation is permitted.