Steel mesh adjustable full-automatic printing machine

Abstract

The invention discloses a steel mesh adjustable full-automatic printing machine. According to the steel mesh adjustable full-automatic printing machine disclosed by the invention, the position of a steel mesh can be adjusted, so that the accuracy is improved; and a scraper can be reliably erected on a PCB transmission line, so that a scraper can be stably lifted, and the lifting scraping of the scraper can be realized. The steel mesh adjustable full-automatic printing machine comprises a lower frame and an upper frame, wherein a working platform is arranged on the lower frame; a transmission guide rail used for transmitting PCBs is arranged on the working platform; a scraper assembly is arranged in the upper frame and above the transmission guide rail; the scraper assembly comprises two vertical brackets symmetrically arranged; a lifting guide rod is mounted on each vertical bracket, lifting slide blocks are assembled on the lifting guide rods in a sliding manner, connecting plates aremounted on the lifting slide blocks, and horizontal assembly plates arranged in a horizontal direction are both fixed on the two connecting plates; and an X electric stay rod and two X ejector rods are respectively arranged on two frame edges in an X direction, of the back surfaces of the horizontal assembly plates, and a Y ejector rod and two Y electric stay rods are respectively arranged on twoframe edges in a Y direction, of the back surfaces of the horizontal assembly plates.

Description

technical field [0001] The invention relates to a full-automatic printing machine, in particular to an adjustable steel mesh full-automatic printing machine. Background technique [0002] In the SMT industry, circuit boards are coated with solder paste by a printing machine, and then undergo component assembly and reflow soldering processes, and finally realize the complete production of PCBs; the printing machine in the prior art has been converted from manual coating to semi-automatic printing. , the cylinder drives the scraper and the stencil to drop to the surface of the PCB. After the scraper lands, the solder paste is repeatedly scraped left and right along the surface of the stencil; the reason why this process is semi-automatic is that it is necessary to manually fix the PCB on the fixture and remove it manually. process, which is a waste of time; [0003] We are committed to making a fully automatic solder paste printing machine, and at the same time we need to imp...

AI Technical Summary

Problems solved by technology

[0002] In the SMT industry, circuit boards are coated with solder paste by a printing machine, and then undergo component assembly and reflow soldering processes, and finally realize the complete production of PCBs; the printing machine in the prior art has been converted from manual coating to semi-automatic printing. , the cylinder drives the scraper and the stencil to drop to the surface of the PCB. After the scraper lands, the solder paste is repeatedly scraped left and right along the surface of the stencil; the reason why this process is semi-automatic is that it is necessary to manually fix the PCB on the fixture and remove it manually. process, which is a waste of time;

[0003] We are committed to making a fully automatic solder paste printing machine, and at the same time we need to improve the squeegee coating accuracy; in the design of the fully automatic printing machine, the scraper driving method of the existing semi-automatic printing machine is not suitable, specifically, in order to ensure fully automatic As a result, we set up the entire scraper on the normal PCB production transmission line, and the unilateral lifting drive cannot guarantee stability and accuracy; we need to design a printing machine scraper fixture that can be reliably erected on the PCB transmission line; in the process of improving precision During the process, we found that the positioning of the PCB is very important. When the position of the PCB deviates from the position of the stencil, the accuracy will be greatly reduced. Therefore, if the position of the stencil can be adjusted, the printing accuracy can be greatly improved

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