MAGUIRE

Product Technical Data Sheet

WSB 420

Gravimetric Blender

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 420 is part of the 400 Series range con- sisting of 1 hopper fitted with 2 material compart- ments.

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).

Control

The WSB Controller has 124 standard features and functions that technically make it lead the industry regarding blending control.

The hoppers are mounted above the Weigh Bin with a default 4000g batch size.

In normal operation the system tares the weight of the weigh bin and then each material is dispensed -

Regrind, Natural, Colour and Additive in sequence, weighing each material after each dispense confirm- ing material required before moving on to the next material.

The complete batch is released into the mixing chamber, and mixed with the previous batch to en- sure a homogenous mix.

Material blending is controlled by a level sensor mounted in the upper part of the mix chamber.

Key to this is the continuous calibration of mate- rials ensuring accurate dispenses of every mate- rial within the blend.

The Controller every dispense updates the gram/second flow rate of each material, ensur- ing consistent accuracy.

Settings are made easily by either user friendly thumbwheels, or entering settings directly on the keypad.

For special functions these can be easily ac- cessed and set via the password protected key- pad.

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.

There is audible alarm and strobe light with si- lence function, should a batch be incomplete, for example running out of additives or master- batches.

As material in the mix chamber is consumed the sensor is uncovered and then the blender then commences the next cycle.

Setup and Operation reports can be printed di- rect 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

MAGUIRE

Product Technical Data Sheet

Dimensions

WSB 420

Gravimetric Blender

Key Features

Ideal for Large processing machines

Reduced weight and footprint

Overall precision of ±0.1% of specified blend

Technical Data

Model

Maximum Throughput**

WSB 420

550kg/h to 650kg/h

1,115lb/h to 1,430lb/h

2

Compressed air gun for quick cleanout included

Easy access to all material contact surfaces of the machine including hoppers, weigh bin, and mixing chamber permits rapid colour change without the use of tools

Number of Materials

Material Dispense

Systems

Weight

Power Supply

2-3” Round Slide Gate

124kg 265lb

120vac - 4.8 Amp

230vac - 2.7 Amp

Proprietary microprocessor-control technology monitors and confirms the weight of each ingre- dient / touch-screen optional.

Compensation is made when a variation in dis- pense weight is detected

Vibration Weighing management

Operating Air Pressure

Air Consumption

4-6 Bar 60-90psi

0.3 m³/hr 0.17cfm

** Throughput achieved is influenced by number of materials, how well they flow, vibration and load- ing consistency - each can effect maximum output of a blender, which in turn effects sizing the cor- rect blender required for an application.

Improved documentation capabilities

5 Year Warranty

Distributed by

Dri-Air Industries

Shipping Weight 127Kg 280lb

H x W x D

137 x 87 x 80cm

54 x 34 x 31.5in

Maguire reserves the right to change technical data without prior notice