Browse Prior Art Database

Substrate Tinner Drum

IP.com Disclosure Number: IPCOM000047186D
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Downes, FJ: AUTHOR [+2]

Abstract

A rotatable drum holds substrates to be tinned by a solder wave immersion process and is incrementally rotated at a low speed to position the substrates in the immersion tank and thereafter rotated at a predetermined time, temperature and rate of speed to remove the excess solder centrifugally from the substrate. The shaft S (Fig. 1) of drum D is mounted in a pair of cantilever members, such as member 1 (Fig. 2) affixed to a support frame bar 2. A scissor linkage 3, also affixed to bar 2, adjustably raises and lowers the drum D relative to the level of the solder wave S of the solder immersion tank T, as indicated by arrow A.

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Substrate Tinner Drum

A rotatable drum holds substrates to be tinned by a solder wave immersion process and is incrementally rotated at a low speed to position the substrates in the immersion tank and thereafter rotated at a predetermined time, temperature and rate of speed to remove the excess solder centrifugally from the substrate. The shaft S (Fig. 1) of drum D is mounted in a pair of cantilever members, such as member 1 (Fig. 2) affixed to a support frame bar 2. A scissor linkage 3, also affixed to bar 2, adjustably raises and lowers the drum D relative to the level of the solder wave S of the solder immersion tank T, as indicated by arrow A. Drum D is rotated about its shaft S, as indicated by arrow E, by a belt B and pulley system which includes driver pulley P1 affixed to adjustable and reversible speed motor M, driven pulley P2 affixed to drum shaft S, and an adjustable idler pulley (not shown) which is adjusted to maintain the proper belt tension for the different positions of the drum D. The circumference of the drum D may be circular or polygon shaped, and the drum D is adapted to hold parallel channel-like trays or fixtures F in each of which are mounted plural substrates G with their surfaces H to be tinned facing outwardly. The trays F contain one, as shown, or more parallel channels, and the substrates G may be of the pinless or pluggable pinned type, as shown, in which case the pins P face inwardly. A pinless substrate and a three-channel tray F' are shown at the bottom of drum D in Fig. 2 by way of example and is similar to the substrate carrier of [*]. Optionally, the ends of the trays F are adjustably mounted to...