Spacer Ring Disk Stack and Process Machine Pickup Head
Original Publication Date: 1985-Sep-01
Included in the Prior Art Database: 2005-Feb-19
The stack of disks consists of a pallet, spacer rings 3 and disks 4. The pallet provides a base for the spacer rings and can be molded from plastic. The spacer rings are designed with tapers to keep the disks aligned in a vertical stack. Vacuum passages 5 allow the transfer of suction from the top of the spacer to the disk under the spacer to prevent sliding. Disks are removed from and added to the stack by a pickup head 6. A "robot-type" device provides variable access to the stack as the height of the stack increases and decreases. The head has a taper 8 that aligns with the spacer ring 3. It also has vacuum ports 10, 11 and passages 12, 13 that allow the pickup head to hold both the spacer ring and the disk, but also allow it to hold just the spacer ring while the disk is processed.