PURPOSE: To make it possible to carry multiple resins simultaneously to metal pots without deformation by a method wherein a holder and a sustainer carrying resins are provided with multiple cylindrical holes.

CONSTITUTION: After resins are put side by side at specified interval on a board 23, pushers 24 are actuated in arrow 43 direction to insert the resins 6 into a holder 21. The holder 21 is stored being placed beside cylinders 53 while pushers 31 are actuated in arrow 45 direction to put the resins 6 inside the holder 21 passing through cylinders 53 on an electrode 8. The resins 6 preheated by a preheater 20 are inserted into the holes of a sustainer 27. The sustainer 27 holding the resins 6 is actuated together with an arm 28 along guides 54 to be turned in arrow 56 direction. Moreover, the sustainer 27 is actuated along the other guides 55 in arrow 35 direction to be stopped on pots 58 of a metal die 16 wherein the resins 6 are inserted into the pots 58 by another pusher.