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Printwire Return Spring Insertion Workstation Disclosure Number: IPCOM000057102D
Original Publication Date: 1988-Mar-01
Included in the Prior Art Database: 2005-Feb-14

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Barenboim, M Doll, CP Frohman, RJ Judd, ME Reynolds, SR [+details]


An automated workstation feeds and inserts printwire return springs into the wire guide of a dot matrix printer Printhead. The assembly task is illustrated in Figs. 1 and 2, showing wire guide 1 with Pockets 2 to receive Spring 3. It is seen that the (Image Omitted) pockets are at an angle of 9 degrees to the wire guide centerline. There are eighteen spring pockets. Some printheads require all eighteen springs; others require only nine. The workstation inserts nine springs at a time. Refer to Fig. 3 showing an elevation view of the workstation. Wire Guide 1, resting in Pallet Fixture 4 with spring pocket end up is brought into the workstation by Pallet Transfer Line 5 and clamped in position.