| 摘要 |
PURPOSE:To heat parts speedily while movement distance is short by covering a heating device for the parts in double structure consisting of a duct and a cover and heating the parts in the duct by utilizing contacting heat conduction and forcible convention of ambient temperature in combination. CONSTITUTION:The duct 5 is constituted covering the outer periphery of a preheating table 2 and the cover 6 is constituted covering the duct 5. Dry air from injection ports 9 and 10 is sent in the hollow part s of preheating table and heat-return table 12 and between the outside of the preheating table 2 and the inside of the duct 5 and dry air passed through the hollow part of the heat-return table 12 is sent in between the outside of the duct 5 and the inside of the cover 6.The parts 4 which move on the preheating table 2 by a transport table 1 are heated by the heat conduction from the preheating table 2 while its outer periphery is heated with heating air in the duct 5. The parts 4 exiting from a testing device 8 passes over the heat-return table 12 covered with only the cover 6 and is heated speedily up to the temperature of the dry air without any dew condensation.
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