machinery feature | Downstream equipment
710mm to 2540mm (100in) outside diameter, without material removal – meaning that no chips or dust are produced. At the same time, it can handle a wider range of conditions, such as variations in ovality, thickness and temperature.
The machine is equipped with universal pipe clamps that do not need reductions or ancillary units when the working diameter changes, but which adapt to different diameters, ensuring a constant grip on the pipe. The cutting action is hydraulic, while the cutting unit
movement is electric with automatic synchronisation with the extrusion speed.
Conair’s ATC coilers provide tensionless winding of small-diameter flexible tubing
gearbox and motor will provide for thicker cutting capacity. The adjustable planetary cutter movement performs cuts in single pneumatic pipe clamps. In addition to its heavy duty support base, it is built for efficient operation. The operating menu provided on a PLC-controlled Soft-Touch panel, the length program- mer and other operator controls are entered via touch screen for optimal functionality. Producers of small-diameter medical tubing can
automate cut-to-length operations and increase productivity without worrying about cut-quality or particulate contamination, using a new travelling planetary cutter (TPC) from Conair. Unlike a rotary fly-knife cutter, which chops through tubing in one quick slice, the planetary knife rotates around the tubing, gradually penetrating the wall to yield a precise, square cut without the shattering, whitening or distortion that commonly occurs with other cutting methods. “A rotary cutter can automate inline cutting of many
The TGG-HB range of hot blade guillo- tines are designed for cutting
plastic profiles like cable ducts and win-
dow profiles
resins,” said Bob Bessemer, Conair sales manager for medical extrusion. “But for other more brittle materials like crystal polystyrene, high-density polyethylene or highly-filled resins, processors concerned about getting a clean, square end cut had to resort to manual, off-line operations. The Conair TPC units change all that, now making it possible to automate the cutting process of even difficult resins for improved productivity and lower cost without sacrificing quality.” Planetary cutting has been used mainly in larger-
diameter tubing and pipe. Now, it is possible to handle tubing as small as 0.080in (2.032mm) in diameter, while holding cut-to-length tolerances of ±0.015in (±0.381mm).
Thick wall pipe Sica of Italy has increased its range of planetary saws for HDPE pipes with large diameters and thick walls, with the TRK/C 2500.
The machine is designed for cutting PE pipes of 26 PIPE & PROFILE EXTRUSION | October 2014
www.pipeandprofile.com
The machine joints other models in the range, including TRK/C 2000 and TRK/D 200 (which is specific for corrugated pipes).
An earlier model, the TRS 160 W, is used for PVC, PP and PE pipes, also claims to solve the problem of chips and dust. Thanks to the patented solution, it can cut and chamfer without removing material. The machine guarantees a clean, perpendicular cut as well as a precise and well-defined chamfer. Sica says that it maintains the same productivity and a satisfactory speed, making it suitable for modern extrusion lines.
Touchscreen addition Gillard of the UK has upgraded its Servo-Torq Mini to include a Lenze 150mm (6in) touchscreen as standard. The model also uses the latest Lenze digital AC servo drives, which the company says improves machine performance. Cut rates of up to 450 pieces per minute, in on-de- mand mode, are possible – and all within a compact footprint, says Gillard. At K2013, the company launched its Servo-Torq Plus extrusion cutter, which combines a brushless AC servo
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