DSP LASER AP with MCS
To limit, instead, the squashing surface between punch and top edges of the box of special
shape and inside botton of the box, it is necessary to use punches with small surface
projecting to the operator, or to install the punches themselves with this surface facing the
rear part of the press (e.g. cranked tools).
12.3. Risks deriving from dangers of mechanical type
12.3.1. Manual support of the sheet
The press brake equipped with the safety system DSP LASER AP presents, in the front
part, residual risks of mechanical type which must be directly highlighted on the machine
through proper pictograms. The following figure shows some examples of pictograms taken
from the standard EN 12622.
To allow the machining, the stop command generated by the interception of the detection
area of DSP LASER AP must be inhibited when the closing speed of the press is equal to or
lower than 10 mm/s. Operator safety is ensured by the reduced speed coupled with a
handheld command. Then is the operator who, aware of the residual risks, commands the
closing of the press.
If the sheet is hold by hand during the approaching and the bending, risks of shearing and
squashing are present:
•
between the V of the sheet and the punch,
•
between the sheet edge and the front face of the punch or of the table (Figure 68 a).
The bending of the piece in processing can cause a shock due to the sudden upward
movement of the piece (Figure 68 b).
Under PCV, just before the press action, the DSP LASER AP device is inhibited and, then,
it cannot ensure the operator against a possible squashing of the fingers between the punch
and the sheet. If the sheet frees itself from the rear backgauge, the hand often follows it
under the punch (Figure 68 c).
Figure 68
Use all the means which allow keeping the hands away from the dangerous areas, for
example:
•
supports to hold the piece during the approaching and, if possible, during the bend:
adjustable tables, squares, etc.
•
magnets, masks, holding tools, etc.
•
stops with height sufficient to hold the sheet pushed by the operator (avoid retractable
stops easily removable).
88
DLAM01EN
Summary of Contents for DSP LASER AP
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