| 摘要 |
A thermo-welding device used for a thermoplastic resin molded goods is provided to drastically reduce cooling time and increase productivity. The device is used with a welding boss ( 5 a) formed on the molded goods ( 5 ) made of thermoplastic resin inserted into a fixing hole 6 a formed on the fixed object ( 6 ). A tip section of the welding boss ( 5 a) projecting out from the fixing hole 6 a is heated and fused to form an extended portion ( 5 c) outside the fixed object ( 6 ) to apply to the welding boss ( 5 a) of a molded good ( 5 ) in the thermo-welding device used for fixing the fixed object ( 6 ) to the molded good. In a portion of the periphery of a heating element having in a tip section thereof an applying side 21 to heat and fuse the welding boss 5 a, a slit 23 is provided to exhaust air after the air cools the inside of the heating element 20 . In addition, on a pipe 10 for supplying cooling air to the inside of this heating element 20 are formed a lengthwise hole 14 for blowing air onto the back of the applying side 21 of the heating element 20 and a widthwise hole 12 for blowing air onto the internal surface of the heating element 20 in the backward of the lengthwise hole 14 . The widthwise hole 12 is located in a shifted position at an angle of not facing to said slit 23.
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