| 摘要 |
A wave solder machine (10) includes a pre-heating station (20), a wave soldering station (22), and a conveyor (16) to transport substrates (12) through a tunnel passing through the pre-heating station (20) and the wave soldering station (22). The tunnel has a substantially oxygen-free environment. The pre-heating station (20) includes a pre-heater including a support frame assembly, and a heater assembly supported by the support frame assembly. The heater assembly is slidably coupled to the support frame assembly between an operational position and a non-operational position. The pre-heater further includes a seal disposed between the heater assembly and the support frame assembly. The seal provides a gas- tight seal when the heater assembly is in the operational position to prevent atmosphere from entering the tunnel thereby preserving the substantially oxygen-free environment within the tunnel. |
