WSB 9400 pages

MAGUIRE
WSB 940
Gravimetric Blender
Product Technical Data Sheet
Design
The Maguire Weigh Scale Blender™ (WSB) range
of gravimetric batch blenders are for all plastics
converting businesses for all types of extrusion
applications, and also all Injection and Blow
Moulding applications.
The WSB 940 is part of the 900 Series range consisting of 1 hopper fitted with 4 material compartments.
Operation
Each material is dosed by a stainless steel slide
gate. The slide Gate is capable of dosing a wide
ranger of settings, from as little as 1% to 100%,
based on an average density free flowing material
(0.65 BD).
For enhanced accuracy and consistency on small
percentage settings (1% to 4%) a Slide Gate Restrictor (SGR-1) is recommended to restrict the
opening of the gate by 50%- this reduces flow and
enhances control.
Control
The WSB Controller has 124 standard features
and functions that technically make it lead the
industry regarding blending control.
Key to this is the continuous calibration of materials ensuring accurate dispenses of every material within the blend.
The Controller every dispense updates the
gram/second flow rate of each material, ensurThe hoppers are mounted above the Weigh Bin with ing consistent accuracy.
a default 9000g batch size.
Settings are made easily by either user friendly
In normal operation the system tares the weight of thumbwheels, or entering settings directly on
the weigh bin and then each material is dispensed - the keypad.
Regrind, Natural, Colour and Additive in sequence,
weighing each material after each dispense confirm- For special functions these can be easily acing material required before moving on to the next
cessed and set via the password protected key-
material.
pad.
The complete batch is released into the mixing
There is audible alarm and strobe light with si-
chamber, and mixed with the previous batch to ensure a homogenous mix.
Material blending is controlled by a level sensor
mounted in the upper part of the mix chamber.
When the sensor is covered the blender will not
dispense any further batches. The level of material
in the mix chamber is critical to good mixing.
As material in the mix chamber is consumed the
sensor is uncovered and then the blender then
commences the next cycle.
lence function, should a batch be incomplete, for
example running out of additives or masterbatches.
Setup and Operation reports can be printed direct to a USB key.
Data is also available via Ethernet or serial
ports, allowing remote access and monitoring to
download settings and check job progress.
Integration to other control or ERP systems can
be made via leading fieldbuses or OPC interfaces