Laser-assisted soldering apparatus and solder deposition machine
A laser-assisted soldering apparatus includes a solder jetting section and a laser coupling unit. The solder jetting section includes a jetting nozzle and a solder body holding capillary adapted to hold a solder body that is being liquefied by a laser beam. The laser coupling unit includes an optical window, a laser entry, a laser passage, a fastening section, and a laser exit. The laser passage extends from the laser entry to the laser exit and is aligned with the solder body holding capillary. The optical window is transparent to the laser beam. The fastening section is fastened to the solder jetting section. A first pressure gas feeding passage merges into the laser passage between the optical window and the fastening section. The solder jetting section includes a second pressure gas feeding passage that merges into the solder body holding capillary between the laser exit and the jetting nozzle.
1 . A laser-assisted soldering apparatus, comprising:
a solder jetting section that includes a jetting nozzle and a solder body holding capillary adapted to hold a solder body that is being liquefied by a laser beam; and
a laser coupling unit that includes an optical window and a body with a laser entry, a laser passage, a fastening section, and a laser exit, wherein the laser passage extends lengthwise through the body from the laser entry to the laser exit, wherein the optical window is disposed towards the laser entry and is transparent to the laser beam, wherein the fastening section is disposed towards the laser exit and is fastened to the solder jetting section, wherein a first pressure gas feeding passage merges into the laser passage at a first connection location located between the optical window and the fastening section, wherein the laser passage is aligned with the solder body holding capillary, and wherein the solder jetting section includes a second pressure gas feeding passage that merges into the solder body holding capillary at a second connection location located between the laser exit of the laser coupling unit and the jetting nozzle of the solder jetting section, wherein the body includes a main body part and a pressure gas connection body part, wherein the pressure gas connection body part is attached to the main body part, and wherein gas from the first pressure gas feeding passage enters the laser passage through the pressure gas connection body part.
2 . The apparatus of claim 1 , wherein the first pressure gas feeding passage and the second pressure gas feeding passage are connected to a common pressure gas reservoir.
3 . The apparatus of claim 1 , wherein the first pressure gas feeding passage is connected to a first pressure gas reservoir, and the second pressure gas feeding passage is connected to a second pressure gas reservoir.
4 . The apparatus of claim 3 , wherein the first pressure gas reservoir contains gas at a higher pressure than that contained in the second pressure gas reservoir.
5 . The apparatus of claim 1 , wherein the body of the laser coupling unit is cylindrical.
6 . The apparatus of claim 1 , wherein the first pressure gas feeding passage has an outlet that is directed towards the laser exit.
7 . The apparatus of claim 1 , wherein the first pressure gas feeding passage merges into the laser passage at an acute angle.
8 . The apparatus of claim 1 , wherein the first pressure gas feeding passage merges perpendicularly into the laser passage.
9 . The apparatus of claim 1 , wherein the body includes a a window body part, wherein the window body part screws into the main body part, and wherein the optical window is attached to the window body part.
10 . The apparatus of claim 1 , wherein the fastening section of the laser coupling unit screws into the solder jetting section.
11 . The apparatus of claim 1 , wherein the body includes a window body part, wherein the window body part screws into the main body part, wherein the pressure gas connection body part screws into the main body part, and wherein the fastening section screws into the solder jetting section.