MACHINERY | CONTROL & INSTRUMENTATION
Right: The iXact, from Inoex, can make 16,000 measurements per second
detected early and corrected in real time. This saves feed material and reduces out-of-spec products and costs. Pixargus has adapted system capacity, the range of functions and the hardware to meet the requirements of the process. Starting with a four-camera model, the system can be scaled up to six or eight cameras, as required, to meet the needs of the process situation. iPC S is the most compact
solution for inspecting all visible surfaces. Special light-edge elements ensure that the measuring field is homogeneously lit, allowing the camera sensors to capture and process irregularities and defects that were difficult to detect in the past – including pinholes, pores, scratches, cracks and grooves.
iPC Dimension (DX) gives 360° geometry
Below: iXray from Inoex uses X-rays to measure pipe wall thickness and diameter with micron- scale accuracy
measurement – including widths, gaps, angles, radii and shapes.
“It detects even most minute deviations from the
target contour thanks to its eight laser line sensors watching closely the dimensions of the inspected product,” said the company. The high number of optical sensors is needed to
capture the complex geometry of the clamping grooves, which can only be measured with sufficient accuracy with cameras arranged at different angles and positions. The models of the basic series come with a number of features known from the larger ProfilControl 7. The hinged arrangement of the sensor head securely prevents the measuring field from being affected by parasitic light effects.
Exacting accuracy Inoex launched its iXact system, which makes 16,000 measurements every second to determine pipe diameter with high accuracy. It uses semiconductor sensor technology and high-power LEDs to measure strongly vibrating tubes – thanks to its high measuring sequence frequency. The high- power LED make measurement of most transparent materials very simple, says the company.
16 PIPE & PROFILE EXTRUSION | April 2020
X-ray specs Also at the show, Inoex launched its iXray technology. The system uses X-rays to measure wall thickness and pipe diameter, with micron-scale accuracy.
It can be applied to single and multiple layer
pipes, tubes and rubber products. The core pieces are X-ray components combined with semiconductor sensor technology. They allow a precise spatial resolution and accuracies in the micron range. Even with high line speeds the X-ray system supplies precise measuring results, on either two or three axes. Standard iXray systems made by Inoex are designed for pipe dimensions from 0.6 to 110mm. During development, Inoex focused on wall thickness and diameter measurement for multiple layers. This included aluminium composite pipes, fabric-reinforced pressure tubes, foam products, medical tubes and hoses as well as cables. The main focus is on reproducible dimensional product accuracy in the micron range and thus the quality assurance aspect. In PVC extrusion, the centring of the extrusion die (such as for rubber tubing) or the thermal die head centring are achieved by way of an additional interface. Another advantage is that it uses the standardised process data interface OPC-UA. X-ray systems of the iXray line have been designed to protect the operator from any risk. Because of their low radiation power, the systems
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As a ‘plug & play’ solution, it does not need any calibration and offers a difference function which
registers any sudden variations. It can detect irregularities such as knots and necking on the measured extruded surface. An extra camera helps to compensate measuring errors due to inclination. This increases the accuracy of the diameter measurement. The two- or three-axis
measurement operates at high speed and with a high precision –
and is available in three different versions: for small-diameter products; for diameters up to 30mm; and for diameters up to 120mm. The robust design ensures that knocks or
temperature changes do not have any effect on measuring results.
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