Patent ID: 7631426

Claim:
A method of manufacturing a heat pipe, comprising steps: providing a vibration tray connecting with a vibration source located aside the vibration tray; positioning a plurality of pipes in the vibration tray; inserting a mandrel into each of the pipes; positioning a feeder corresponding to each of the pipes; starting the vibration source to drive the vibration tray to vibrate in a horizontal direction perpendicular to axes of the pipes and feeding powder into the pipes from the feeders; sintering the powder of the pipes; extracting the mandrels from the pipes, filling working media into the pipes, vacuuming and sealing the pipes; wherein the vibration tray comprises upper and lower supporting boards, the pipes being positioned in the supporting boards; wherein the upper and lower supporting boards of the vibration tray define a plurality of through holes therein, the heat pipes being positioned in corresponding holes; wherein a diameter of each of the holes of the upper supporting board is larger than that of each of the holes of the lower supporting board of the vibration tray; and wherein the pipes each comprise a body having a diameter smaller than that of each of the holes of the upper supporting board but larger than that of each of the holes of the lower supporting board of the vibration tray, and a lower end tapered from the body having a diameter smaller than that of each of the holes of the lower supporting board of the vibration tray.