Brhmig’s Dynamotion parallel-kinematic robot is equipped with the NCT-PK. In a handling system for cookies, it works with a vision system to lift unsorted goods from a belt and position them for precise packaging.
The NCT is well suited for automated handling systems. For example Brhmig GmbH, Radeberg, Germany, has successfully used these components for several years. The custom-machine manufacturer relies on noncontact technology for difficult tasks such as handling wafers, charge air coolers, and felt shoe soles.
Brhmig’s latest undertaking will be to equip its Dynamotion parallel-kinematic robot with the NCT-PK. Working in concert with a vision system, the NCT picks up unsorted goods arriving on a belt, swivels them to the side, and places them precisely into their packaging.
According to Sandro Claus, Brhmig’s sales and marketing director, the NCT ensures, for instance, that the chocolate coating on pastry is not damaged by pressure points or scratches. In such applications, they eliminated vacuum as an alternative because traditional vacuum systems used in this environment ingest contaminants and require frequent filter maintenance, he explains.
The parallel kinematic robot uses three Rexroth MSK servomotors, connected via a crank arm and linking rods at a common operating point, to permit movements to any point in the working range. The robot is controlled by IndraMotion MLC motion logic system with integrated robotics.
Fast and precise handling
The Dynamotion accelerates at rates to 190 G and permits cycle times of 150 units per minute. However, cookies, and especially chocolate-coated pastries, require extremely gentle handling. Thus, precisely picking up and depositing 52 cookies per minute is considered very high throughput in the food industry. Quick-switching CD04 pneumatic directional valves control flow to the NCT, and an AS3 maintenance unit with activatedcarbon filters provides clean air to the NCT-PK, Claus explains.