Silk screen printing machine and silk screen printing technology

Abstract

The invention discloses a silk screen printing machine and a silk screen printing technology. The silk screen printing machine comprises a first silk screen printing station, a second silk screen printing station, a first moving table, a second moving table, a driving device and a feeding device; the first silk screen printing station and the second silk screen printing station are adopted to respectively carry out hole plugging silk screen printing and solder resist board face silk screen printing on a PCB, the PCB is borne by the first moving table to be subjected to the hole plugging silk screen printing and silk screen printing of one board face sequentially through the first silk screen printing station and the second silk screen printing station, the PCB is borne by the second movingtable to be subjected to silk screen printing on the other board face through the second silk screen printing station, and the driving device can drive the first moving table and the second moving table to move at the same time so as to complete corresponding operation; and the hole plugging silk screen printing and the solder resist board face silk screen printing can be completed on one printing machine, the silk screen printing is more efficient, and the structure is practical and reliable; and when the two silk screen printing stations work, the feeding device automatically supplies printing ink to a first silk screen printing mesh and a second silk screen printing mesh, manual operation is not needed, more time and labor are saved, and the production efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of silk screen printing, in particular to a screen printing machine suitable for PCB boards and a screen printing process. Background technique [0002] Silk screen printing technology is widely used in PCB board manufacturing. The function of silk screen printing is to coat solder mask on the circuit and substrate that do not need to be soldered on the printed board, so as to prevent the circuit from bridging during soldering and provide long-term electrical protection for the printed board. Environmental and chemical resistance protection. [0003] At present, the silk screen printing process is to conduct plug hole screen printing on the PCB board first, and then perform solder mask screen printing on the front and back sides of the PCB board. Since the plug hole and solder mask screen printing processes need to use different screen printing screens for printing, they usually need to be printed on differe...

AI Technical Summary

Problems solved by technology

[0003] At present, the silk screen printing process is to conduct plug hole screen printing on the PCB board first, and then perform solder mask screen printing on the front and back sides of the PCB board. Since the plug hole and solder mask screen printing processes need to use different screen printing screens for printing, they usually need to be printed on different screens. The corresponding process is completed on the screen printing machine, that is, the screen printing process needs to be operated on at least two screen printing machines, the production efficiency is low, and multiple people are required to operate, and the labor cost is high

There are some screen printing machines with double screen printing stations. The plug hole and solder mask surface printing can be completed on one device, and only one workbench is used to transport the PCB board to move between different stations. Although the efficiency has been improved, but The printing ink consumption of different screen printing stations is accelerated, and it is easy to have too little ink to affect the printing quality. Manual real-time monitoring and replenishment of ink is required. The operation is time-consuming, the manpower cannot be effectively saved, and the efficiency is still limited.

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