DOWNSTREAM EQUIPMENT | ANCILLARIES
Downstream technologies help turn newly made pipe and profile into a product that can be shipped more quickly to customers
Keeping control, making the cut
Processes such as cutting, cooling and measuring help to ensure that extruded pipe and profile is ready for delivery as soon as possible – and in exactly the right form. Between them, downstream products ensure product quality and accuracy. At this year’s K2019, Battenfeld-Cincinnati will unveil its new DTA 160 direct cutting machine. With a new cutting unit, both polyolefin and PVC pipes can be cut accurately to length quickly, precisely and cleanly. A highlight of the swarfless unit is that it uses no hydraulics. The saw carriage is very light, weighing around
40% of a conventional system. It must follow the pipe in line with the process requirements so as not to interfere with or interrupt the continuous production flow. The reduced weight improves the dynamics and enables short pipe lengths to be cut at greater extrusion speeds. The time required for acceleration and deceleration is significantly reduced. “The greater mobility of the cutting unit is advantageous for short lengths of 50cm or less in particular,” said Henning Stieglitz, CTO of BC Extrusion Holding in Bad Oeynhausen, Germany. The cutting tools are powered by linear actua- tors. The advantages of this include a reduced
www.pipeandprofile.com
number of components – and less maintenance – as well as increased precision and flexibility. The cutting tools rotate around the pipe during the cutting process. Because of this, the tool only needs to be long enough to cut through the wall thickness of the pipe, regardless of its diameter. This contributes to the unit’s compact design. Quick-action fasteners and centring aids enable cutting blades to be exchanged easily. A wide variety of blade shapes can be used, including triangular and rounded blades to match cut performance to specific customer needs: for instance, a chamfer mill can be incorporated, as it is often needed for PVC pipes. Multiple, evenly distributed pneumatic clamping jaws grip the pipe simultaneously, ensuring a clean cut thanks to their stable guidance. The small distance between the cutting position and the clamp prevents the pipe from being deformed, further enhancing the quality of the cutting surface. This makes it easier when the pipe is installed, for example, with sleeves, and enables extremely precise pipe-to-pipe connections. Special bearing materials synchronise the clamping jaws to improve the service life of individual components.
� September 2019 | PIPE & PROFILE EXTRUSION 43
Main image: Battenfeld- Cincinnati’s DTA 160 direct cutting
machine uses no hydraulics, and claims to work faster than competing systems
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62
