Method for checking static convergence retardation of deflecting coil adjusting machine

Abstract

The invention discloses an inspection method for static convergence delay of YAM machine, and it improves the stability and the accuracy of YAM machine, and reduces the production cost. The technical scheme is: (1) kinescope matches with user caliber, and the kinescope static convergence is adjusted as zero, that is to say the standard tube of static convergence of user caliber; (2) proofreads the YAM machine using the static convergence standard tube in step (1), the static convergence of standard tube on YAM machine can be adjusted as zero by adjusting the delay button on YAM machine; (3) detects the phase difference of R,G,B signal on YAM machine in step(2), and acts as the delay criterion of YAM machine of user caliber in step (1); (4) all YAM machines are connected with a detecting device for signal, and the phase difference of R,G,B signal on YAM machine is adjusted as the delay criterion in step (3) by adjusting the delay button. The invention can be applied in the proofreading field of static convergence of relative devices in production of kinescope.

Description

technical field [0001] The invention relates to a method in the production process of picture tubes, in particular to a static convergence proofreading method for related equipment in the production of picture tubes. Background technique [0002] In the production process of picture tubes, especially in the assembly process of picture tubes and user cores, the problem of unsatisfactory static convergence will be encountered. The so-called static convergence means that the three electron beams emitted by the red (R), green (G) and blue (B) electron guns meet at the central point of the picture tube screen without being affected by the deflection magnetic field. In actual production, due to the influence of the picture tube itself and / or the user's movement, there will often be unsatisfactory static convergence, that is, the electron beams cannot meet at the center of the screen. Therefore, it is necessary to adjust the static convergence during the assembly process of the pi...

AI Technical Summary

Problems solved by technology

The deviation of these tubes during use caused the static convergence of the YAM machine and the corresponding user movement to be inconsistent.

(2) Since different user cores have different static convergence standard tubes, and there are many production line equipments, the picture tubes are frequently damaged, so the demand for making sub-standard tubes is relatively large

And the workload of making the sub-standard tube is also quite large, thus causing a substantial increase in production costs

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