Patent ID: 6328362
Filing Date: 2001-12-11
Classification: H05K,Y10T

Abstract:
An electric-component mounting head, comprising:a support member;a suction nozzle which applies a suction to an electric component and thereby holds the electric component; anda nozzle holder which is supported by the support member, which holds the suction nozzle such that the suction nozzle is movable relative to the support member in a direction parallel to an axis line of the suction nozzle, and which comprises a housing and a piston fitted in the housing such that one of the housing and the piston that is connected to the suction nozzle is movable relative to the other of the housing and the piston that is connected to the support member,the nozzle holder having (a) at least one pressure chamber which is defined by at least one of axially opposite end surfaces of the piston and the housing, (b) at least one first communication opening which communicates with said at least one pressure chamber, (c) two guide surfaces which are supported by the housing and the piston, respectively, and cooperate with each other to guide the relative movement of the housing and the piston, and (d) at least two gas-supply passages which open in a space provided between the two guide surfaces, at at least two first positions axis-symmetric with each other with respect to an axis line of the piston, and at least two second positions which are axis-symmetric with each other with respect to the axis line of the piston and are distant from the first positions in a direction parallel to the axis line of the piston, the gas-supply passages supplying a pressurized gas to said space.