What is the slider hydraulic overload protection
You said the slider is the punch on the mechanical punch it, before the mechanical punch is loaded with the old overload protection device: the collapse of the block, because can not accurately send and effectively protect the machine, and the replacement is very troublesome, And thus gradually eliminated. Replaced by a rapid unloading, recovery is also faster hydraulic overload protection system.
System composition and working principle: Hydraulic overload protection system generally by the pneumatic pump, unloading valve, pressure relay, solenoid valve, pressure gauge and other components. When the height adjustment of improper or the emergence of double material, the pressure will be overloaded. At this time the pressure inside the hydraulic cylinder increased sharply, unloading valve pressure chamber pressure is greater than the back pressure chamber back pressure, to promote the piston down to open the oil return, hydraulic oil quickly drain the tank. The slider under the action of the balancer, up 20mm, to protect the press and mold from damage; the same time, the pressure relay and the trip switch action, cut off the clutch control circuit, press the stop; solenoid valve closed air supply and quick discharge unloading Valve back pressure chamber air, "normal" indicator light off, "unloading" indicator light, the press can not start.
Slider hydraulic overload protection refers to the mechanical press unloading quickly, the recovery is also faster hydraulic overload protection system. Mechanical presses Older overload protection devices, such as crush, are gradually eliminated because they can not accurately send and effectively protect the machine and replace it in a very troublesome manner. Replaced by a rapid unloading, recovery is also faster hydraulic overload protection system.
