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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsBirger Karlsson, Lars-Anders Olofsson, Christer Olsson
Estimating the term…
The present invention relates to a copper ball insertion machine, for integrating metal inserts in via holes provided through a printed circuit board (PCB), comprising a motor driven X-Y table (2) with the PCB on top. The X-Y table (2) is adjustable to position a selected via hole in a predetermined location aligned with a closable outlet opening (12) of a movable container (6) for metal inserts. The container is by means of a clamping cylinder (28) displaceable for clamping the part of the PCB adjacent said via hole against the working surface (2) of said X-Y table. By means of a pivoting cylinder (20) the container is rotatable for feeding one metal insert through the outlet opening (12) into said via hole. A stamp (30) is drivable by a hammer cylinder (40) for compressing said metal insert to shape and deform it into a tight fit with the via hole.
A means (1) for making modifications of printed circuit boards to decrease the thermal and electric resistance from one side to another of a printed circuit board (PCB) by integrating metal inserts in via holes provided through said PCB, comprising a motor driven X-Y table (2) with the PCB on top, characterised by said X-Y table (2) being adjustable to position a selected via hole in a predetermined location aligned with a closable outlet opening (12) of a movable container (6) for metal inserts, which is arranged for clamping at least a part of the PCB adjacent said via hole against the working surface of said X-Y table and feeding one metal insert into said via hole, and compression means (27) for compressing said metal insert to shape and deform it into a tight fit with the via hole.
A means according to any one of the previous claims, characterised in that the metal inserts are in the form of symmetrical metal bodies and the container (6) being operated for distributing one insert at a time through the closable outlet opening (12).
A method of making modified printed circuit boards for decreasing the thermal and electric resistance from one side to another of a printed circuit board (PCB) by integrating metal inserts in via holes provided through said PCB and making use of a motor driven X-Y table (2) with the PCB on top, characterised of the following steps:
Dependencies are inferred from the claim text.