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wiredInUSA - September 2015
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industry demand for multiple wire and cable
applications. Machine sizes range from
1,250mm to 5,000mm (48" to 195") with the
greatest concentration within the 1,800mm
to 2,500mm (70" to 98") size range. Each is
available with a standard controls platform.
For international projects, machines are
equipped with a Siemens AC drive, PLC and
HMI with a Mitsubishi servo drive. Technology
is available as stand-alone (running in
torque control) with a dancer, or with an
accumulator.
Davis-Standard’s caterpillar capstan options
and HPE extruder are also popular, with
multi-pass, linear and belt wrap capstans
available for a range of wire and cable
applications. The HPE offers a compact,
rugged design and a fast delivery that is
energy efficient and easy to maintain. Its
advantages for the wire and cable industry
are said to include increased torque
capacity for high viscosity resins and custom
options.
Powder conveyance
Two new powder-conveying units from the
Conair Group are designed for handling
PVC and other powders down to 1 micron
in size, as well as dusty regrind. Available
in a PR (powder receiver) model, for use in
central vacuum systems, or a self-contained
PMmodel with integral vacuummotor, both
are said to offer excellent conveying and
filtration rates.
The integral-motor version will convey
material from gaylords or bins directly to
a molding machine or extruder. The PM
motor loaders come in three sizes, with
conventional DC brush or brushless motors,
and can transport up to 1,000lb/hr (454kg/
hr) over distances up to 50ft (15.25m).
The PR powder receivers are available in
five sizes, ranging in volume from 4 to 85
liters, and accommodate line sizes of up to
4" outside diameter.
Doug Brewster, Conair Conveying product
manager, explained: “Conventional loaders,
which rely on screens to separate material
from conveying air, work very well with
virgin pellets, but when powdered material
is being transported, screens can become
laden with accumulated dust, decreasing
the performance of the conveying system.
The same thing can happen with dusty
regrind and, as plastics processors attempt
to use more reclaimed material – either
for environmental or economic reasons –
the issue becomes more acute. “The new
powder receivers and motor loaders were
developed for these applications.”
A brush with vibration
Amphenol Industrial Products group is
offering a high vibration brush terminal series
designed to withstand harsh environments.
An electrical connection with 14 to 70 points
of contact per mated pair is made by
intermeshing two small wire bundles.
The brush-like terminal technology comprises
multiple strands of high tensile strength
wire bundled together on each side of the
contact and hooded for protection. These
compact size 22 signal terminals are able
to accommodate up to size 16 gage
cable or a PCB tail, and are rated up to 5A
continuous.