Quality abnormality detection method applied to character jet printing machines

Abstract

The invention discloses a quality abnormality detection method applied to character jet printing machines, and relates to the technical field. According to the method, character lines which are located in X and Y direction of a printed character are designed at a PNL plate edge remainder place; the character lines respectively penetrate through the whole printing surface; before normal charactersare produced, the character lines are firstly printed to recognize whether the ink jet points are normal or not; at a place which is 2-6 mm away from the felling of a semi-finished product, all the jet nozzles are enabled to jet ink for one time, so as to determine whether the ink jet points have the conditions such as deviation, ink scattering and ink throwing or not; at an ink jet recognition place, namely, the character lines, abnormal ink points of all the ink nozzles are displayed; when the ink jet recognition place is normal in position, the place quality is normal; and when the ink jetrecognition place is abnormal in position, the whole line in the ink jet direction of the plate is abnormal and the phenomena such as ink scattering, deviation and non-curing occur. According to the method, ink jet recognition points are designed to facilitate the production inspection and automatic equipment recognition, thereby greatly enhancing the inspection efficiency and recall factor; and judgement can be carried out for the first time when the equipment is abnormal, thereby avoiding the occurrence of the condition such as quality abnormality.

Description

technical field [0001] The invention relates to the technical field of character printing equipment, in particular to a quality abnormality detection method applied to a character jet printing machine. Background technique [0002] At present, more and more character printers are used in the PCB industry. The traditional screen printing method requires too high personnel skills. Due to the problems of human resources and industry development trends, the characters on the PCB board are tending to be printed automatically. Due to the poor quality stability of character printers, the equipment has problems of ink spilling and ink throwing, which has become uncontrollable due to the influence of the environment and the stability of the nozzles, and the further promotion of character printing equipment and the realization of fully automatic production are hindered. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides ...

AI Technical Summary

Problems solved by technology

Due to the poor quality stability of character printers, the equipment has problems of ink spilling and ink throwing, which has become uncontrollable due to the influence of the environment and the stability of the nozzles, and the further promotion and realization of fully automatic production of character printing equipment has been hindered.