An end effector based on the Bernoulli principle for handling sliced fruit and vegetables

Study on Through Paths Inside the Air Pressure Pick-Up Head for Non-Contact Gripper

“…이러한 문제에서 다소 자유 로운 공압을 이용하는 방식은 청정공기를 사용하여 표면 오염 (8,9) . 최근에는 단일 공압 라인과 하부 토출 부위에 반사판을 두거 나 하부에 토출공과 흡입공을 번갈아 배치하여 양압과 부압이 혼용 형성되게 하는 등 토출 형태에 따라 형성되는 유동 형태에 의해 일정하고 안정적인 웨이퍼 파지력을 위한 균형점을 제공 할 수 있도록 하는 문제점 해결에 많이 집중되어 있다 (4,10) . 따라서 본 연구는 기본 형상에 대한 개념적 연구 (11) Torr에 해당되는 저진공(low vacuum) 수준은 현장 식품가공 산업과, 박판(thin film), 플라즈마 등의 제조 산업에 직, 간접적으로 활용되고 있다 (12) .…”

Suppression of Vortex Precession in a Non-Contact Handling Device by a Circular Column

“…Among those, the prominent methods are magnetic, electrostatic and pneumatic [1] [2]. The magnetic and the electrostatic methods have restricted usage to conductive materials, whereas the pneumatic methods have not; it is applicable to a wide range of materials including: insulator or conductor, magnetic or non-magnetic, rigid or non-rigid and so on because the handling force produced by the air flow is magnetic-free and low-heat-generate [2] [3]. Because of its simple structure and operation, the pneumatic method provides minimal maintenance and does not require a control loop to obtain a stable state.…”

Performance of a non-contact handling device using swirling flow with various gap height

“…Pneumatic levitation approaches use air flow to apply a sucking force to a work piece. Because air flow is magnetic free and generates little heat, pneumatic approaches can be applied any material: insulator or conductor, magnetic or nonmagnetic, rigid or non-rigid (Davis et al 2008;Vandaele et al 2005). Furthermore, pneumatic approaches require no control loop to obtain a stable state and simple structures are nearly maintenance free.…”

“…Furthermore, pneumatic approaches require no control loop to obtain a stable state and simple structures are nearly maintenance free. One typical pneumatic approach based upon Bernoulli principle that is most often used in practical applications is called Bernoulli levitation (Davis et al 2008;Dini et al 2009;Waltham et al 2003). Recently, Dini et al(2009) investigated the characteristics of different gripper configurations and clarified that the use of a deflector having a small angle and radial venturi channels on the plate give positive effects to the grasping force.…”

“…Recently, Dini et al(2009) investigated the characteristics of different gripper configurations and clarified that the use of a deflector having a small angle and radial venturi channels on the plate give positive effects to the grasping force. However, Bernoulli levitation needs large air consumption often leads to a great air power loss through supply pipes (Davis et al 2008). This paper focuses on a new pneumatic non-contacting handling approach named vortex levitation that uses swirling flow.…”