Browse Prior Art Database

Lead Tip Detector

IP.com Disclosure Number: IPCOM000078821D
Original Publication Date: 1973-Mar-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Mayron, H: AUTHOR [+5]

Abstract

The misregistration of electrical component lead tips is detested and used as data, for compensatory positioning at the receiving substrate.

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Lead Tip Detector

The misregistration of electrical component lead tips is detested and used as data, for compensatory positioning at the receiving substrate.

In Fig. 1, component 1 with depending leads 2 is carried by automated handler 3 to position sensing mechanism 4. The component is lowered so that the leads enter tapered holes 5 in detector block 6. Slightly bent leads are straightened by the conical holes. Block 6 is mounted for movement along the X axis on platform 7 which is, in turn, supported for movement along the Y axis on base 8. The block and platform are supported on low-friction bearings 9. Respective axial motion encoders 10 and 11 detect movement produced by lead tip insertion, and provide electrical output signals indicative of the detector block position. Adjustable stops 12 limit the X-Y motion of the block.

In Fig. 2, encoder data from detector mechanism 4 is supplied to computer 21, which responds with control signals to a holder mechanism 22 for the substrate that is to receive the component. Feedback data confirms the substrate position and, when correct, the computer actuates handler 3 through sequence data to lift the component from block 6, move to the substrate holder and lower the component into position. After insertion is confirmed, the handler is controlled to thereafter release the component and start a new cycle.

Interchangeable detector blocks 6 with appropriate holes 5 can be provided to accept various component configuration...