Tower-type PCB and stitching method thereof

Abstract

The invention discloses a tower-type PCB and a stitching method thereof, which relate to the field of printed circuit boards. The tower-type PCB comprises a PCB body, the PCB body comprises an upper layer board and a lower layer board, and the PCB body also comprises square needles; the PCB body is provided with a plurality of welding stitching holes and fixing stitching holes, square needles can be inserted into the welding stitching holes and the fixing stitching holes for stitching, and the welding stitching holes and the fixing stitching holes are used for fixing an upper layer board and a lower layer board. The welding stitching hole and the fixing stitching hole are both in clearance fit with the square needle, the diagonal length of the cross section of the square needle is larger than the aperture of the welding stitching hole and the aperture of the fixing stitching hole, and the aperture of the fixing stitching hole is smaller than that of the welding stitching hole. By the adoption of the scheme, effective stitching of the PCBs can be guaranteed, the bad conditions of deformation, dislocation and the like of the upper PCB and the lower PCB are avoided, meanwhile, soldering tin can permeate to the other sides of the PCBs from the stitching holes, and it is guaranteed that welding on the other sides is free of the bad phenomena of solder skips, pseudo soldering, surfacing and the like.

Description

technical field [0001] The invention relates to the field of printed circuit boards, in particular to a tower type PCB board and a sewing method thereof. Background technique [0002] With the rapid development of the electronics industry, the tower circuit board has been widely used in the manufacturing industry due to its advantages such as small footprint. At present, domestic PCB boards have gradually become standardized. At present, the quality of tower circuit boards is mainly limited by the stitching process. How to achieve effective stitching of circuit boards has become the key to ensuring the quality of tower circuit boards. [0003] The traditional circuit board stitching is to stack the welded upper and lower circuit boards together with the help of tooling, and then insert the sewing needle into the stitching hole of the circuit board, such as manual soldering, dip soldering or wave soldering. [0004] However, this approach has many disadvantages: [0005] Th...

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Problems solved by technology

[0016] The technical problem to be solved by the present invention is that the welding operation of the tower type circuit board is inconvenient at present, the production cost remains high, and the pass rate cannot be improved. The purpose is to provide a tower type PCB board and its sewing method. By adopting this scheme, Ensure the effective stitching of the PCB board, avoid the deformation and dislocation of the upper and lower PCB boards, and at the same time satisfy the penetration of solder from the stitching hole to the other side of the PCB board, ensuring that the other side is welded without missing soldering, virtual soldering, surfacing, etc. unpleasant sight

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