| 摘要 |
To supply lubricating oil stably to a chain. A reflow device 100 is provided with a chain for conveying a board, an upper rail 10B in which the chain travels and an oil supply device 90 provided above the upper rail 10B. A groove portion 14 is provided at an inner surface side of the upper rail 10B. An upper key member 30 is positioned between the groove portion 14 and the chain 82 to support the upper portion of the chain 82. An oil supply hole 16, through which lubricating oil passes, is formed at a position of the upper rail 10B which corresponds to a position above the upper key member 30. The lubrication oil, dropped from the oil supply device 90, passes through the oil supply hole 16 of the upper rail 10B and is applied to an upper surface of the upper key member 30. The lubricating oil applied to the upper surface of the upper key member 30 is flown along the upper surface and the side surface thereof and supplied to the chain 82.
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