DEVICE FOR EXCHANGING DISKS

摘要

A device for exchanging disks is provided with a pair of opposing disk containers each containing a large number of disk caddies each having side grooves and an upper surface having a recess adapted for containing a disk, a unit for extracting disks interposed between the opposing disk containers and adapted for extracting disk caddies from these disk containers, and a unit for vertically shifting the disk extracting unit. The latter is movable between the disk containers from a first position to a second position and vice versa, and provided with a pair of hook members cooperable with one of the disk containers and another pair of hook members cooperable with the other disk container. These hook members are actuated by electromagnetic means thereby and engageable in the side grooves of the disk caddy. When the extracting unit is moved to the first position, one pair of the hook members are at a position capable of engaging in the side grooves of a disk caddy contained in one of the disk containers, the other pair of the hook members are engaged in the side grooves of a selected one of the disks contained in the caddy extracted from the other disk container and the center aperture of the selected disk is at the mid position between the disk containers, When the extracting unit is moved to the second position, the other pair of the hook members are at a position capable of engaging in the side grooves of the disk caddy contained in the other disk container, one of the pairs of the hook members are engaged in the side grooves of a selected disk caddy which is extracted from one disk container, and the center aperture of the selected disk is at the mid position between the disk containers. When one or the other pair of the hook members are engaged by the electromagnetic means in the side grooves of the disk caddy contained in one or the other disk container, and the center aperture of the disk in the disk caddy is at the mid position between the disk containers, the unit for vertically shifting the disk extracting unit is actuated for vertically shifting the disk caddy.