MACHINERY | CORRUGATED PIPE
Right: Baruf- faldi has redesigned its Dreno Cover- ing machine – which covers corrugated pipes with PP geotextile
must not be detected as defects. For this, the updated product offers special algorithms that raise automation in quality inspection. “It is our aim to supply systems that ideally need
no setting up by the operator,” said Jürgen Philipps, managing director and head of techno- logical development at Pixargus. As well as their characteristic corrugations,
corrugated tubing may include recurring sections with features that require special inspection. For instance, automotive customers may order sets of different corrugated tubes for the assembly of engine blocks. These tubing sets can be made in a corrugator line as a continuous product. A new algorithm in the inspection software now automati- cally recognises where one section within a set ends and the next one starts. If different inspection tasks apply, the algorithm ensures that the correct parameters are used in each case. This makes handling faster and simpler, even in case of a very diversified product. Corrugator dies can also engrave various markings into a product. To make sure they are not detected as defects, the system must recognise them. The software upgrade also includes a new algorithm that automatically recognises and accepts the engravings. The new sensor unit is an advance on the design
Below: The ProfilControl 7 S system automates the inspection of corrugated tubing, says Pixargus
of the PC7 S Tube inspection system. Eight high- performance cameras inspect the peaks, valleys and transition areas of the corrugated structure – and can distinguish between unwanted and desired structures and features. Holes, dents, blisters, nodes, scratches and
cracks are accurately detected, allowing out-of- spec production – and production costs – to be reduced.
Textile covering At K2022, Baruffaldi unveiled the redesign of its Dreno Covering machine – which covers perfo-
IMAGE: PIXARGUS
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.adspipe.com �
www.plasticpipe.org �
www.pipelife.com �
www.unicor.de �
www.maintools.de �
www.drossbach.de �
www.olmas.com �
www.itib-machinery.com �
www.inoex.de �
www.pixargus.com �
www.baruffaldi.eu
40 PIPE & PROFILE EXTRUSION | May/June 2023
www.pipeandprofile.com
rated/slotted corrugated pipes with polypropylene (PP) geotextile. The Dreno Covering is an automatic machine
that can be used both in- and off-line. It can process both single-wall rigid and double-wall flexible pipes from 50 to 200mm diameter. The PP geotextile is wrapped around the pipe and welded continuously using an ultrasonic welding head. It is possible to place two coils of fabric – one for work and one in reserve – to avoid machine stops during automatic coil changeover. The variation in diameter from 50 to 200mm does not need extra equipment, but only a change in the width of the fabric coil. The main advantage of using PP geotextile fabric
rather than a sock is the ability to cover the pipe automatically – directly in the extrusion line. Other advantages of the PP geotextile include: it does not deform, and its fibres are dimensionally stable; it has a higher tear resistance; and, it has greater resist- ance to acids and bases – and thus higher durability. During the redesign, attention was paid to the
production speed – which now reaches 30 m/min – and to the dimensions of the machine. Overall size has been reduced, by moving the electrical cabinet to the entry point of the pipe and by optimising the safety guards.
IMAGE: BARUFFALDI
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