MACHINERY | CONTROL & INSTRUMENTATION
Right: Pixargus says its AllRounDia DV is the first single system to perform simultaneous contour measurement and surface inspection of round products
of the production conditions is not required, says Sikora.
Corrugated success Pixargus says that its new inline gauge can measure the complete wavy structure of corrugated tubing gaplessly.
New algorithms allow the
ProfilControl 7 S Corru- gated Tube to inspect previously ‘undetectable’ areas – includ- ing the peaks and valleys and transition areas in between. This reduces out-of-spec production and will cut
process costs, says the company. Corrugated tubing has become increasingly common thanks to its flexibility – which is due to their wavy structure. However, the structure can be difficult to inspect. A reliable inspection system must be able to differentiate between plane and curved surfaces and inspect them – continuously – according to different quality parameters. Using technology from its PC7 S Tube inspection
Below: The iProfilControl from Pixargus (iPC) combines dimension measurement with surface inspection at high extrusion throughput rates
system, Pixargus has developed a new sensor head for corrugated tubing. Eight high-performance cameras capture the surface structure from different angles. New algorithms enhance the software, which can detect the change from plane to wavy and vice versa by masking out specific surface structures. Even very small flaws are visible – including holes, dents, blisters and poorly crimped joints. In its standard version, the device is designed for tubing of up to 30mm. The scalable system can be integrated into Industry 4.0 environments and comes with all common interfaces, such as OPC-UA.
In the round Pixargus says that its AllRounDia Dual Vision is the first single-unit system that can perform complete contour measurement and surface inspection at the same time. This system, which has a compact design, measures and inspects pipe, tubes and cables with a 100% defect detection rate, it says. The hardware and
software from the company’s ProfilControl 7 technology have been adapted
to the measurement of contoured products. The system measures around the complete circumference of the products using a single sensor head. AllRounDia DV gives gapless, 360°
measurement of round and oval contours. It does this by using a camera-based, laser-triangulation method. While conventional, axis-based measurements using the shadowing method cover only six single points, AllRounDia’s optical sensors capture 8 million pixels, says the company. “Each individual point can be decisive for the quality of the product,” said Jürgen Philipps, managing director of Pixargus. “Although the single-point method is very accurate, it does not capture the area between the points, and detects only defects of relatively large topographic extension.” For a 1mm defect on a product 10mm size, inspecting at only six spots would leave 90% of the surface uninspected. AllRounDia, however, inspects each point with the same level of reliability and repeatability, he says. “This is gapless inspection in the true sense of
the word.” The specially developed lighting concept
ensures that the field of vision and measuring field are homogeneously lit. For this reason, flaws in the material – such as fissures, inclusions and other high-contrast defects – are reliably captured.
Surface quality Also at K2019, Pixargus launched a device that combines dimension measurement with surface inspection. Its iProfilControl (iPC) can be used to check a variety of products, including window profiles, cable conduits and skirting boards – at high extrusion throughput rates. Flaws occurring during production can be
14 PIPE & PROFILE EXTRUSION | April 2020
www.pipeandprofile.com
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