This page contains a Flash digital edition of a book.
technology | Hot runners


customise the movement profile with defined speeds and acceleration and to specify precise pin positioning through the e-control software. The e-Plate system provides a direct, rigid connec-


Above: FillControl Control V is an automatic valve gate controller from Priamus


Right:


The Priamus FillControl


monitor makes process


monitoring portable


include: the ability to preheat without damage to actuator or seals; elimination of the risk of clogged or leaking cooling lines; longer actuator seal life and reduced servicing requirements. The elimination of the cooling plate also means mould changes are faster, as there is no need to cool down the hot runner, while temperature uniformity of the manifold is said to be better. A Valve Monitoring Interface (VMI) is included in the system to enable monitoring, diagnostic and troubleshooting. Outside of the moulding machine control, VMI is said to provide measured individual pin movement data and opening times, allowing operators to check whether the valve pins are moving as intended. SVG+ actuators are also equipped with sensors that enable a simple upgrade to the company’s activeGate control technology. ActiveGate provides precise control of each valve pin


Right: SVG+ from Synven-


tive is designed for efficient and reliable sequential valve gate moulding of large parts


to regulate melt flow and pressure for the most demanding sequential moulding projects including filling family moulds. It is said to enable higher levels of dimensional stability to be maintained in tooling with complex geometries. Other claimed activeGate benefits include improved surface quality, increased production rates, clamp force reduction, lower scrap levels, and quicker start-ups. Männer Group, part of Barnes Group since 2013,


has developed its e-Plate system for moulding applications with large number of cavities and tightly spaced injection points. The company says the pin actuation plate is ideal for use with all-electric injection moulding machines where synchronised electrically-driven plate actuation is required. It adds that it is possible to


42 INJECTION WORLD | November/December 2016 www.injectionworld.com


tion from the drive to the pin. The company says this enables operation with no play, making it possible for the measuring system within the motor to monitor the pins continuously. This helps achieve high levels of part quality with maximum part-to-part consistency and accuracy, short cycle times, process precision and reproducibility, and wider processing windows. The latest addition to the Barnes Group Molding Solutions business is the Foboha mould business, until earlier this year owned by the Swiss Adval Tech Group. The US firm paid CHF133m for the Germany-based company, which has sales of around $75m and specialises in development and manufacturing of complex plastic injection moulds for packaging, medical, consumer and automotive applications, including Cube mould designs.


Robustness and longevity


Recent hot runner developments at Milacron Mold-Masters have been focused on enhancing performance, robustness and longevity. The


company says longer lasting systems are required today that need less maintenance and so cut downtime. In addition, solutions are required for new resins with more critical processing requirements. The company’s latest Summit-Series hot runner nozzles, for example, offer four times less thermal variation from set-point compared with a typical nozzle with heater band. The Summit-Series hot runner is built entirely from


stainless steel, and is said to be ideal for moulding shear and temperature-sensitive resins such as PC, POM and PBT. The use of brazed in heaters with copper


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  |  Page 63  |  Page 64  |  Page 65  |  Page 66