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A printed circuit board (PCB) pressing machine is characterized in that a groove is arranged around the bottom edge of the hot pressing plate, an asbestos plate flush with the bottom edge is fixed on the groove, an inverted L-shaped pipeline is arranged on the side edge of the hot pressing plate, the outer end of the inverted L-shaped pipeline is connected with a vacuum pump, and the bottom end is aligned with the communication space formed around the inner edge of the printed circuit board placing box; In addition, heat-resistant rubber is arranged at the upper part around the placing box and is opposite to the asbestos board; The cold pressing plate is provided with transversely cross and parallel heat dissipation through holes between circulation loops and longitudinal heat dissipation openings on both sides; With the combination of the components, the hot pressing plate has the vacuumizing function when the printed circuit board is pressed, and the cold pressing plate is fed into the circulation loop by air to cool and dissipate heat.

The printed circuit board laminating machine comprises: a car for conveying the laminated printed circuit board into and out of the hot pressing mechanism and the cold pressing mechanism; A hot-pressing mechanism utilizes a hot oil device arranged outdoors for heating through the hot-pressing plate circulating loop of each layer of the hot-pressing mechanism; A cold pressing mechanism is provided with several layers of cold pressing plates, and a circulation loop is arranged in each cold pressing plate; The utility model is characterized in that a groove is arranged around the bottom edge of the hot pressing plate, and an asbestos plate cut with the bottom edge is fixedly arranged on the groove, an inverted L-shaped pipeline is arranged on the side edge of the hot pressing plate, the outer end of the inverted L-shaped pipeline is connected with a vacuum pump, and the bottom end of the inverted L-shaped pipeline is aligned with the communication space formed around the inner edge of the printed circuit board placement box; Heat-resistant rubber relative to asbestos board is arranged at the upper part around the placing box; Transverse cross-parallel heat dissipation through holes are arranged between the circulation circuits of the cold pressing plate, and longitudinal heat dissipation openings are arranged on both sides.