The invention relates to the technical field of
die bonding, and particularly discloses a preheating device and a preheating method for a eutectic
machine, the preheating device comprises a mounting seat, a heating piece is arranged in the mounting seat, the heating piece can transfer heat to the mounting seat, and a mounting groove is formed in the bottom side of the mounting seat; the suction
nozzle comprises an adsorption head and a suction
pipe which are connected, the adsorption head is installed in the installation groove, the adsorption end of the adsorption head is exposed out of the outer side of the installation groove, and a
temperature control gap is reserved between the adsorption head and the inner wall of the installation groove; and the adjusting part is arranged in the mounting seat and is used for adjusting the size of the
temperature control gap so as to adjust the heat conduction efficiency between the mounting seat and the adsorption head. According to the invention, the
chip can be preheated while being transferred, so that the working efficiency can be improved; through the arrangement of the
temperature control gap, the heat conduction efficiency between the mounting seat and the adsorption head can be flexibly adjusted through the adjusting piece, so that the preheating temperature and the preheating efficiency of the
chip are accurately controlled.