User’s guide
HRK 65-125
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5
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HS
Description of the machine
The
Shannon HRK
bending machine is a rapidly convertible semi-automatic machine for
the production of large series of items with multiple bends for the plastic sheet processing
industry.
o
The machine has four adjustable heating elements as standard. Four reflectors
under or two under and two upperreflectors. The temperature of which can be
adjusted independently by electronic controls.
o
The filaments of the heating elements on the working surface are adjustable in
height. The other elements, which are mounted in the pneumatically operated top
frame which clamps the workpiece in place, are adjustable in height as a single
unit in respect of the working surface.
o
The workpiece can be heated from two sides, considerably reducing the
production cycle time and making it possible to bend sheet up to 6 mm thick.
o
The top frame is switched on independently of the control units and is controlled
by an adjustable timer.
o
The working surface is made of scratch-resistant solid core material with which
the space between the zones to be heated can be filled to support the plastic
sheet.
When heated, thermoplastics become so flexible that
they can be shaped. When a plastic sheet is heated to
its softening point in a narrow zone, if can be bent to
any angle desired.
The bending radius is determined by the width of the
heated zone. The zone is determined by the thickness
of the material, the type of heating element and the
distance between the plastic and the filament.
Every plastic has its specific softening point. By coordinating the temperature, heated
zone and the heating time all kinds of thermoplastic can be processed.
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