Injection Moulding Asia

New hybrid model ramps up vertical moulding

The TNX series of turntable machines offers five models based on clamping forces ranging from 50 to 200 tonnes, with either centre injection (TNX-R-V model vertical injection from top of the mould) or parting line injection (TNX-R-A horizontal injection from side of the mould). The parting line option is made to order.

The machine employs Nissei's so-called super energy-efficient hybrid X Pump system. In the case of the 50 tonne TNX50R, this feature allows for 70% less power and 25% less hydraulic oil than a conventional hydraulic machine. This unit boasts maximum injection velocity of 300 mm/second, which is 2.6 times faster than conventional hydraulic machines, and an injection response time of 60 m/second (twice as fast as conventional hydraulic machines).

Its servomotor-driven pump permits low-flow volume control and feedback control is capable of precisely controlling the velocity setting below 1 mm/second. In addition, controllability and stability in the ultra-low pressure range have been improved significantly, which are ideal for thick-wall product and hot melt (low-pressure encapsulation) mouldings, says Nissei.

The TNX series is equipped with a three tiebar-wide turntable and the maximum mould dimensions mountable are said to be the largest in industry (up to 20% larger than predecessors).

To date, Nissei has sold about 10,000 vertical injection moulding machines and it plans to sell 150 units of the TNX machines a year. It is targeting sales at applications like tactile switches for electrical/electronic parts, narrow pitch connectors for mobile devices, mesh filters for automotives and LED bases and reflectors.