TPT July 2010

T echnology U pdate

Melt temperature measuring system for hose and tube production

ULTRATEMP 6000 is a non-contact polyethylenemelttemperaturemeasurement system based on non-invasive ultrasonic technology. It is specifically tailored to the production of hoses and tubes. The system precisely measures the melt temperature during production and does not influence the melt flow properties, as the ultrasonic sensors are positioned outside of the flow channel. Therefore, melt shear heating effects do not occur. Besides temperature measurement the Ultratemp 6000 detects inhomogenities in the melt. Early cross-linking after screens, which may lead to ambers and scorches in the polyethylene material is avoided. The extremely high measuring rate allows a fast response time as well as the registration of small temperature variations. The propagation velocity of sound is generally dependent on material and TRACTO-TECHNIK (TT) has successfully launched the Tubrotron Vario 40, which is the first of a new generation of all-electric CNC pipe bending machines. These machines offer a broad application range due to their modular construction. The complexity of each machine is determined by the customer respectively by the technical requirements of the bending job. Based on a common main frame the Tubrotron Vario can be configured as right bender, left bender or right-left bender with up to three tool levels for each bend direction. These levels can be equipped with forming tools for rotary draw bending as well as a roll bending tool for free form bending. That way tubes and pipes can be bent in small and large bending radii in one clamping. For free form bending a powerful booster drive is applied which helps push the pipe through the pipe bending tool. Due to the interaction of booster axis, pipe rotation and positioning of the forming roll, pipe figures can be bent in different radii and free form shapes. In the highest stage of extension the bending machine’s motion sequence is controlled via 15 servo axes. The all electric drive of the Tubrotron Vario guarantees utmost bending precision and

temperature. This also applies for ultrasonic. It is known that the measurement of the wall thickness with ultrasonic requires calibration in order to compensate temperature influences. Sikora takes advantage of the knowledge about the temperature/material connection of the ultrasonic velocity and measures with the Ultratemp 6000 the melt temperature reliably and precisely. The distance of the

The new melt temperature measuring system from Sikora

ultrasonic signal is known as well as the material. Hence, the temperature directly results from the running time of the sound.

Sikora AG – Germany Fax: +49 421 48900 90 Email: sales@sikora.net Website: www.sikora.net

Tracto-Technik presents new generation of all-electric CNC pipe bending machines

with a remote maintenance interface. The Tubrotron Vario is especially suitable for creating complex pipe bending parts as they are required, for example, for aerospace or automotive technology. But also tube figures with small and large bending radii (such as in the furniture industry) can be produced by means of this tube bender. For the production of large series the pipe bending machine can be extended with an integrated automatic loading and unloading device. Tracto-Technik – Germany Email: tubomat@tracto-technik.de Website: pipebending.tracto-technik.com

repetition accuracy as well as distinctive noise reduction and energy savings compared to common electro-hydraulic pipe bending machines. For the machine control TT has chosen the Simotion solution by Siemens. Operating the machine via a Touch PC with graphical user interface and menu guided user guidance is simple and comfortable. The all-rounder convinces with its robust construction and the solid and clean machining using high quality components from renowned manufacturers. The main components are easily accessible and the machine meets the latest safety standards. To keep the software permanently up to date, the all electric bending machine is equipped

The Tubrotron Vario 40

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J uly 2010

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