The Cyclonic Vacuum Pick Non-contact Technology Research

As a novel pneumatic actuating component, Non-Contact Vortex Vacuum Cup could keep non-contact status when picking workpiece. It has merits of non-contact, non-damage and free-pollution so that it has an urgent and wide application requirement in medicine and semiconductor producing areas in which non-damage and high clean condition are required.Although there are some literatures about the Non-Contact Vortex Cup, there are still no public and ready theory and design method for application due to technical blockade. Therefore, in order to remove the blockade and master our own vortex vacuum cup technology, it is necessary to research on the working principle, structure design of the cup, dynamical working characteristics and system constitution.In this paper, some research results have been obtained through theoretical analysis, experiment and system implementation.(1) Focusing on the demand of working principle analysis of the non-contact vortex cup, the flow field of the vortex cup has been numerical simulated, so that the flow pattern and the relation of the lifting force with the working parameters have been obtained, which provided a basis for the structure design and experiment.(2) The testing system has been built, by which the flow pattern from the numerical analysis is tested for verification and the affection law of the vortex cup parameters on the lifting force and dynamical working process has been also experimented. Then the supply air flowrate and the initial gap have been aware of main factors affecting the levitation process. Thus to reduce the vibration when working some principles are summarized, such as minimum initial gap and "great-to-little" flow control method and pairing use of the vortex cups to avoid rotation effection. These results are very important for the design and operation of the non-contact vortex vacuum cup and its system.(3) A non-contact vacuum handling system is built up to verify the research results of the vortex cup and some valuable experiences of design and application for the non-contact handling system have been obtained.