PURPOSE: To prevent the waste time from occurring by carrying a substrate so that the substrate is brought into contact onto a heating means and conducting bonding work immediately after the substrate reaches to the work space of bonding.

CONSTITUTION: A substrate 10 supplied from a part feeder is sucked by a substrate-feed arm, and turned up to the opening section 9B of a jig 9 and placed. The jig 9 on which the substrate 10 is put is further fed, and the substrate 10 is placed onto a heater block 24. The substrate 10 is fed intermittently together with the jig 9 without resistance on the top face of the block 24 while being heated by the block 24, and the bonding operation of a pellet is conducted by a working unit at a specified position. The block 24 is lifted until the substrate 10 is abutted against a top cover 25 at that time, and the jig 9 is put on the sliding surface of the block 24 and bonding operation is performed. Accordingly, bonding operation is conducted immediately to the substrate 10 being fed to the position of bonding, thus preventing the lost time from occurring.