CUTTING MECHANISM FOR BACK FACE LEAD OF PRINTED BOARD

摘要

PURPOSE:To easily cut the lead of the back face of a printed board with non- contact by projecting a laser light on the lead and jetting an assisting gas as well. CONSTITUTION:The laser light 10 emitted from a laser 4 becomes a parallel light by a convex lens 6 after being spreaded by a concave lens 5 and condensed in a belt shape by a cylindrical lens 7. The part of high energy density is taken off by a slit 8 and reflected at right angles by a prism 9. The reflected laser light 10 is projected on the lead 11 of the printed board 2 which is fed intermittently. In this case an argon gas is spouted from the plural jet ports of an assisting gas jet part 3 together with the projection of the laser light 10. The lead 11 to which the laser light 10 and argon gas are added is rapidly cut with oxidizing.