The invention discloses a micro component picking and placing device and method controlled by a
liquid medium, and relates to micro component operation in the fields of
microelectronics, micro
assembly and the like. The micro component picking and placing device controlled by
liquid medium comprises a mounting frame, a micro driving motor, a coupler, a
ball screw, a screw nut, a long connecting plate, a connecting piece, an
electromagnet, an iron attracting head, a spring, a spring fixing seat, a
heat conducting plate, two fixing bolts, a four-hole connecting piece, two fixing baffles, an
electric heating piece, a refrigerating piece, a
water cooling head, a hose, a
gasket A, a
gasket B, a posture adjusting plate, a probe, an elastic film, a long connecting plate and a
ball screw in clearance fit with the mounting frame, and the connecting piece, the
electromagnet, the
magnet head, the spring, an inner hole of the spring fixing base, an inner hole of the
heat conducting plate and the probe are coaxially arranged. The
electromagnet and the
magnet head are arranged in a spaced mode, a magnetic force is generated under excitation of an external current field, the electromagnet is connected with the
magnet head in an adsorption mode, and after the external current field disappears, the electromagnet and the magnet head are disconnected instantly. The device is used for flexibly picking a micro member, adjusting a posture of the micro member and performing a release operation.