High-strength epoxy paper laminated PCB

The utility model belongs to the technical field of PCBs (printed circuit boards), in particular to a high-strength epoxy paper laminated PCB, which comprises a PCB base board and printed circuit boards arranged on the surfaces of the two sides of the PCB base board, a metal tube is arranged on the edge of the PCB base board in a penetrating manner, a limiting groove is formed in the outer surface of the metal tube, the PCB base board is embedded into the limiting groove, and the printed circuit boards are arranged on the PCB base board. An inner pipe is welded to the inner surface of the metal pipe, an outer pipe is arranged between the inner pipe and the metal pipe, and a compression spring is installed in the outer pipe. A metal tube is arranged on the edge of a PCB base plate in a penetrating mode, meanwhile, the stability of connection between the metal tube and the PCB base plate is improved through a limiting groove formed in the surface of the metal tube, meanwhile, an inner tube is welded to the inne