Patent ID: 6499994
Filing Date: 2002-12-31
Classification: F27B,H05K

Abstract:
A heating apparatus in a reflow system, comprising a preheating zone for performing heating at a temperature lower than a melting temperature of cream solder, in which a rope laid between a drive pulley and a driven pulley whose rotation speed may be controlled is vertically disposed within a vertical heat insulating chamber in which an inlet and an outlet are provided in vertical walls on both sides and a feeding conveyor and a receiving/sending conveyor are provided in the inlet and the outlet respectively, support pallets are attached to said rope at a predetermined interval, a plurality of heaters are provided in a central position of said rope in a vertical direction, vanes for introducing heat of the heaters to the support pallets are provided, and fans are disposed above the heaters, and a main heating zone in which an inlet and an outlet are provided in vertical wall on both sides, a pattern mask in which a number of through-holes are formed is fixed horizontally within a heat insulating chamber having an inlet in communication with the outlet of the heat insulating chamber in said preheating zone, a heater is disposed above the pattern mask, fans are disposed above the heater, sleeve bodies having flanges are fitted in necessary through-holes of said pattern mask, one end of a coil spring having the other end engaged with a sleeve body having a flange is fitted with the former sleeve body, a conveyor moving in the horizontal direction is disposed below the sleeve bodies, and heat at a temperature for melting the cream solder by the heater is applied to portions where the cream solder has been coated through the sleeve bodies and the coil springs by the fans.