ITW Diagraph PA/4600, User Manual

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Diagraph - an ITW Company PA/4600 & PA/6000 User Manual
System Modules Page 6
System Modules
2.0 System Modules
2.1 Mechanical SubSystem
Unwind P/N: 4600-605
Rewind P/N: 4600-606
Tamp Pad P/N: 4600-610 Width x Length
The unwind is designed to capture supply
rolls up to 14 inches in diameter, with 3 inch
cores. This subsystem uses a hub ‐ based fin
design to capture the supply roll without
need for an outer disk. This reduces
downtime in performing supply roll
changeouts, and allows small variations in
core diameters.
The rewind is driven by a brushless DC
motor, which greatly increases the life of the
rewind system. This subsystem requires no
adjustments. There is no clutch on the
rewind, it uses the motor’s magnetic field to
develop holding torque. The rewind is belt
driven, using an automatic tensioner. This
belt should be inspected for wear at the
recommended service intervals.
The tamp pad captures the label from the
printer, and holds it under vacuum until the
time when the label is to be applied to the
product. There are several sizes of tamp pads,
to accommodate a wide variety of label
dimensions. Each pad can be ported,
typically once, for a particular label size. The
pad vacuum holes are arranged into columns,
which are not punched through. When a pad
is ported, the proper columns are punched
out so that vacuum can draw the label onto
the pad. For most applications, the column
closest to the printer and the column on the
furthest end of the label (from the printer)
are ported.
The tamp pad has provisions for mounting
the label present and auto retract sensors.
These sensors must be mounted flush to the
bottom of the pad, for optimum sensing.