Wave solder nozzle with an exit trough having a weir, a...

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 1/08 (2006.01) B23K 1/00 (2006.01) B23K 3/06 (2006.01) H05K 3/34 (2006.01)

Patent

CA 2593752

A wave solder nozzle (42) is capable of delivering solder material to perform a wave soldering operation on a printed circuit board (18) in an inert atmosphere. The wave solder nozzle (42) includes a front plate (48) and a back plate (50) coupled to the front plate (48). The front plate (48) and the back plate (50) define a channel (52) through which solder material (54) flows. The nozzle (42) further includes an exit trough (58) extending from the back plate (52). The exit trough (58) has a weir (60) provided at one end of the exit trough (58). The exit trough (58) is constructed and arranged to control the flow of solder material (54) from the wave solder nozzle (42). A surface of the exit trough (60) is wettable to improve the flow of solder material (54) out of the wave solder nozzle (42). A method of improving the flow of solder material (52) through the nozzle (42) is also disclosed.

La présente invention concerne une buse de brasage tendre à la vague (42) qui peut distribuer un matériau de brasure tendre pour réaliser une opération de brasage tendre à la vague sur une carte de circuit imprimé (18) dans une atmosphère inerte. La buse de brasage tendre à la vague (42) comprend une plaque avant (48) et une plaque arrière (50) accouplée à la plaque avant (48). La plaque avant (48) et la plaque arrière (50) définissent un canal (52) à travers lequel s~écoule le matériau de brasure tendre (54). La buse (42) comprend en outre une goulotte de sortie (58) s~étendant à partir de la plaque arrière (52). La goulotte de sortie (58) comporte un déversoir (60) prévu au niveau d~une extrémité de la goulotte de sortie (58). La goulotte de sortie (58) est construite et agencée pour réguler l~écoulement de matériau de brasure tendre (54) à partir de la buse de brasage tendre à la vague (42). Une surface de la goulotte de sortie (60) est mouillable pour améliorer l~écoulement de matériau de brasure tendre (54) hors de la buse de brasage tendre à la vague (42). Un procédé d~amélioration de l~écoulement de matériau de brasure tendre (52) à travers la buse (42) est également décrit.

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