INDUSTRIE 500 QS QUICKSTOP
THE SUPER FAST STOP OF SAW BLADE
The industry 500 QS defines terms such as freedom of movement,
power and cutting speed completely new and maximize the safety of the operator at the same time. This is unique.
Who wants to work on a
band saw always with the thought that he could injure himself or even cut off a finger.
Who can work 8 hours with highest concentration.
Who can do 12,000 cuts a day or 60,000 cuts a week without losing control for a fraction of a second?
For this momentary failure, the quick stop device was developed by us.
The safety stop is an additional option for the Industry 500 and Profi 400.
Subsequent installation in existing machines is not possible.
The operator starts the machine
It only takes 1 minute to switch on the machine for the first time
until the QUICKSTOP system is ready for use.
As soon as the green light is constantly lit, the machine can be taken into operation.
The operator does his job
To be protected, it is the indispensable prerequisite
that he wears a blue glove for sawing on each hand. (Other colors are programmable.)
Reaction time machine compared to humans
The camera monitors a defined area in front of the band saw blade with up to 800 frames per
second. This results in a time interval of 1.25 milliseconds. One second is equal to 1000 milliseconds.
The reaction time of the system is about 4-6 milliseconds.
The saw blade comes to a standstill between 10 and 20 milliseconds.
For comparison, a human has a reaction time of 500 milliseconds.
The reaction time is the time span between the recognition of a specific reaction occasion and
the beginning of the (defense) action directed to it.
It is psychologically and physiologically determined and is due to visual stimulation;
which make 80% of our perceptual content, between about 0.2 and 0.3 seconds (200 to 300 milliseconds).
If a look-up (Saccade) is required, it alone requires another approx. 0.35 seconds (350 milliseconds).
The reaction time is different for visual, acoustic and tactile stimuli. (End quote Wikipedia)
In this time of about 500 milliseconds already 2500 teeth have passed the cutting spot and have already
cut a deep wound. The saw band does not distinguish between human and animal meat - unfortunately.
In addition, the saw blade has the full power of the drive motor plus the kinetic energy of the drive and deflection pulley.
No mercy and no escape for the one who has the misfortune to get into the saw band.
Assuming the worst braking time for the quick stop is 20 milliseconds and correspondingly 100 teeth.
In contrast to unrestrained cutting the quick stop but has the advantage that the saw blade comes to a standstill in this time. So stopped from 30 meters per second to 0 meters per second. This let´s us assume 50 teeth, which cause an injury during this time.
If the movement of the hand in the direction of the band saw blade is not too fast, then no injury is likely.
The patent pending difference: The sudden relaxation of the saw blade.
As soon as the stop mechanism is triggered, the saw blade is simultaneously released. Thus, the saw blade is decoupled from the drive roller and the upper pulley.
The saw blade can be blocked quickly due to its low mass.
Since the saw blade is no longer driven, it can no longer transfer a large cutting energy.
This process significantly reduces the severity of the injury.
Due to the mechanically executed clamping of the saw blade, the saw blade inevitably comes to a standstill.
Thus, the operator has a very good chance of surviving the accident unhurt.
With a cable connected to the machine - even more security
What advantages does the additional protection of the employee with a cable offer.
- In the event that the camera fails, the cable still offers one
additional trip contact.
- Prerequisite is that the employee wears a glove that
is electrically conductive.
- It must be additionally worn a rubber glove that
electrically isolate the conductive glove from the machine.
- The glove is cut by the band saw blade. Thus, the conductive
glove comes into contact with the band saw blade.
- a small harmless current flows and triggers the QUICKSTPOP
- as there is no lead time for the QUICKSTOP
there is likely to be an injury.
- how severe the injury is depends on the direction of movement
and the speed of movement.
In any case, an injury is significantly lower than without QUICKSTOP.