Patent ID: 6510978
Filing Date: 2003-01-28
Classification: B23K

Abstract:
A solder jet machine for soldering substrates moving therethrough in a substrate conveyance direction from an upstream side toward a downstream side of the machine, the machine comprising:a solder wave forming plate having multiple solder ejecting ports exiting through a top surface thereof, wherein the solder ejecting ports are located in multiple rows extending across the substrate conveyance direction, said ports are arranged so that an imaginary line linking a solder ejecting port in a row on the upstream side and a solder ejecting port in a row on the downstream side is sloped upward in the substrate conveyance direction so that molten solder ejected from a solder ejecting port on the downstream side will flow opposite the substrate conveyance direction and between adjacent solder ejecting ports on the upstream side; wall portions surrounding each solder ejecting port projecting upwardly from the surface of the solder wave forming plate; and the solder wave forming plate comprises groove portions having a surface lower than said surface of the solder wave forming plate, said grooved portions located adjacent at least some of the solder ejecting ports for causing ejected molten solder to flow opposite the substrate conveyance direction.