HSA Series

Yushin is no stranger to innovation; continual research and development has been at the core of our company since the early 1970’s. Our unstinting R&D efforts led us to create what was, until recently, our fastest model range: The RAII-HS Series.

The RAII-HS Series remains a very popular choice for high speed operations worldwide. However, some of our customers needed to go even faster and that led to a problem: Our methods had been refined to such a point that further increases in speed were not possible (or so we thought). It was time to rip up the rule book and unlearn some of our previous, hard fought, assumptions.

The key to breaking the deadlock was a revolutionary form of Computer Aided Engineering (CAE) that we had been perfecting for high performance tool design alongside Kyoto University (please see the End-of-Arm Tooling section). Our CAE application is able to seek out the theoretical optimum form for a device and it led us to three key areas for change and improvement:

Weight reduction

In numerous areas we discovered new ways to create moving components and supporting architecture that allowed us to considerably reduce unnecessary weight while maintaining the same rigidity. We found a 13% reduction in the weight of the machine, most importantly on the moving parts.

Lower profile

The wrist area of the robot lies at the extremity of the arm and must enter the mould during take out. Any bulk removed here allows the mould opening to be reduced, saving valuable time on each cycle. We managed to create a comparable wrist that is an incredible 38% slimmer, allowing mould openings to be a vital 41mm narrower.

Vibration control

Vibration is a particular hindrance to high speed operation because time delays must be programmed in to allow settlement. Our engineers designed a radically new Vibration Control Technology and also created a new carbon fibre reinforced plastic arm that promotes superior vibration dampening.

Taken together, these key improvements resulted in a quite astonishing outcome: The HSA Series. At the K2010 tradeshow atop a high-cycle injection moulding machine (removing plastic cellular phone housings from a two-cavity mould), the HSA delivered a blistering 0.32 second take out time.

Yushin’s founder, the late Susumu Kotani, would have been very proud. His original design philosophy was “ever lighter, ever faster” and we feel the HSA Series lives up to his exacting standards.