GearVision milling cutters

Van den Bos Flowerbulbs in Naaldwijk has been operating a new sorting machine for freesia bulbs for a year now. The GearVision was designed and manufactured by Gearbox, a company based in Westland. The major advantage of this sorting method is that it results in much more uniform freesia cultivation in pots or flower cultivation.

Van den Bos Flowerbulbs contacted Gearbox in 2018. Van den Bos anticipated a knowledge gap in the sorting and packaging of freesia bulbs because one of their permanent employees was approaching retirement. Daan Vermeer of Van den Bos Freesia B.V. presented Gearbox with the challenge of safeguarding quality knowledge, and in the same year, a Proof of Concept was already running in the halls at Van den Bos. Since then, the machine has been extensively refined, algorithms have been trained, and the machine has been further developed. "It was a long process, but I am really proud of what we have achieved," says Vermeer. On Freesia Product Day on 22 November, he presented GearVision to around forty Dutch growers.

The tubers prepared by Van den Bos are fed into the machine via a conveyor belt. Using multiple camera techniques, GearVision then determines the weight and quality of each potato tuber. Advanced camera technology also scans the inside of the tuber in 0.8 seconds. "Things like fusarium, petrified tubers, tubers with sprouts that are too long and snotty tubers are removed." The tubers are then transported via three conveyor belts and with air support to the correct exit, where they end up in a crate. When the tubers are exported, they are immediately placed in bags. The batches that Van den Bos runs through the machine consist of at least a thousand tubers. The machine's capacity is approximately 17,000 tubers per hour. Vermeer assumes 180,000 tubers per day. According to Gearbox, the capacity can be increased even further.

The major advantage of the machine is that it can sort a batch with, for example, a sieve size of 5 into different weight classes. For example, the machine divides the Varena variety grown in New Zealand into five different weight classes. "Each weight class blooms at a different time." Vermeer believes that nurseries with potted freesias in particular benefit from this method of sorting. "Because the tubers are now sorted by weight, flowering in the greenhouse is very homogeneous. In the past, a grower had to harvest pots for two or three days, but now he can harvest everything in one go." With the GearVision, sorting and counting freesia tubers is not only faster, but the quality of the tubers is also much better guaranteed. Among other things, the machine displays the numbers, how many are good and bad, what variety it is and where it comes from, the numbers per output and how long the sorting machine has been running. Vermeer can also see in real time on his computer in the office, in a handy dashboard, how a batch is composed. This also allows him to collect a lot of data on how the contract growers of the freesia tubers are performing. The machine has a payback period of approximately three years.