December 5, 2018

High-speed multi-head weigher designer wins inventor award

Toshiharu Kageyama, mechanical engineer with Ishida Research and Development in Japan, was awarded the 62nd Kyoto Inventors Award for his invention: the oval-shaped 18-head multi-head weigher.

multi-head weigherHigh-speed vertical form fill seal (VFFS) packaging machines grew in demand around 10 years ago in response to the industry’s need for improved productivity. For high-speed and accurate weighing to effectively support high-speed bag making, product had to be evenly and consistently fed to all weigh hoppers. If product feeding was inadequate, high-speed bag making became impossible because of a lack of available combination heads.

Development of a new multi-head weigher capable of high-speed weighing while maintaining high accuracy was key. The design strengthened Ishida’s reputation as the inventor of the modern day multi-head weigher.

Oval-shaped weigher design

To solve this issue, Kageyama devised a method to rotate the approach route of product to hoppers by using vibration. As a result, product feeding to areas that were difficult to feed now became possible. Additionally, Ishida developed their unique “back-to-back” feeder that distributes products equally to two weighing inlet chutes from a single supply conveyor. In addition, the oval-shaped multi-head weigher that allows optimum discharge route to twin VFFS packaging machines.

These three elements enable high-speed weighing of up to 280 weighments per minute. With this technology, one oval shape weigher does the job of two weighers, providing significant footprint and cost savings. These technologies are patented in Japan, and more than 350 units are installed in packaging lines for snacks, biscuits and vegetable processors worldwide. Kageyama was also involved in the development of Ishida’s Atlas VFFS bag maker. With his expertise in packaging systems, is now involved in developing the next generation Ishida multi-head weigher.

Technology for a new weigher solution includes utilization of artificial intelligence (AI) and will lead to accurate feeding control, to further reduction in product give-away, and to improved production efficiency.

“I am honored to receive this historical award, it is a great pleasure that the product created from my ideas are satisfying customer’s needs throughout the world,” Kageyama said.

Heat and Control is the exclusive supplier of Ishida industrial weighing, packaging and inspection systems in the U.S., Canada, Mexico, Latin America, Australia and New Zealand.