| 摘要 |
PROBLEM TO BE SOLVED: To enable a chip to be precisely corrected on positional deviation in the direction of rotation so as to mount it very accurately on a board. SOLUTION: A head nozzle which transfers and mounts a chip 15 on a board is composed of a nozzle holder 22 and a nozzle unit 23 mounted on the lower part of the nozzle holder 22 in a detachable manner. The nozzle unit 23 is equipped with a flange 25 and a nozzle 26. The tip 33 of an arm 32 extending from the nozzle holder 22 is fitted in a groove 34 provided in the upside of the flange 25 in a radial direction. When the nozzle is rotated around its axial line so as to correct the chip 15 on positional deviation in a direction of θ, an angular error is induced in the direction of rotation by looseness induced by a gap between the tip 33 and the groove 34, time angular error is very small because the arm 32 can be enhanced in arm length, therefore the positional error of the chip 15 in a direction of θ is very small, so that the chip 15 can be very accurately mounted on the board. |
