PCB automatic screen printing machine

Abstract

The invention discloses a PCB automatic screen printing machine which comprises a screen printing platform and a printing device, wherein the screen printing platform is fixedly connected with two sliding rails, a sliding plate is arranged above the sliding rails, the sliding plate is fixedly connected with two sliding blocks, the two sliding blocks are arranged on the two sliding rails in a sliding mode respectively, the PCB is arranged on the sliding plate, and a reciprocating driving device is arranged on the bottom surface of the sliding plate; the reciprocating driving device comprises a reciprocating driving plate, two power motors fixedly connected to the two ends of the reciprocating driving plate respectively, two driving gears fixedly connected to output shafts of the two power motors respectively, a guide mechanism for preventing the reciprocating driving plate from rotating and a driving mechanism for driving the reciprocating driving plate to intermittently reciprocate. Driving racks are fixedly connected to the two sliding rails correspondingly, and the distance between the two driving racks is larger than the distance between the opposite outer sides of the two driving gears. The device has the advantages that the possibility that the hands of workers are pinched by the printing device is reduced, and the safety of the PCB screen printing process is improved.

Description

technical field [0001] The invention relates to the field of screen printing machines, in particular to an automatic screen printing machine for PCB boards. Background technique [0002] In the production process of PCB board, it is usually necessary to print marks on the PCB board through a silk screen printing machine. The screen printing machine includes a screen printing platform for placing the PCB board and a printing device for printing patterns. The staff places the PCB board on on the screen printing platform, and then drive the printing device to move downwards to print the PCB board. After the printing is completed, the printing device moves upwards, and the staff takes out the printed PCB board and re-places it on the screen printing platform. printed PCB board. [0003] In the process of placing and removing the PCB board on and off the screen printing platform, the staff needs to extend their hands under the screen printing device, which increases the possibil...

AI Technical Summary

Problems solved by technology

[0003] In the process of placing and removing the PCB board on and off the screen printing platform, the staff needs to extend their hands under the screen printing device, which increases the possibility of the staff's hands being pinched by the printing device that moves up and down. Reduces the safety of the PCB board printing process

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