The dispensing needle is also called the dispensing needle tube. It needs to be calibrated beforehand when it is added to the glue valve or syringe to align the dispensing or dispensing. The purpose of calibration is to make the needle alignment higher and apply to dispensing or dispensing uniformly and stably, whether it is a straight plastic needle or a stainless steel dispensing needle or even special bending. The dispensing needle also needs to be calibrated. The calibrated coordinate position has a high alignment accuracy. The precision control effect of sealing or packaging boxes with PCB coating has been greatly improved.
Importance of calibration process
Bending plastic-steel dispensing needle
Calibration of Setting Coordinates
If it is found that the distance between the needle and the glue coating position is mainly affected by the stop displacement, the coordinate position of the needle should be calibrated by the control board. The Z-axis height and X-axis Y-axis position of the needle fixed point should be set and recorded. If the needle is used twice after the point is recorded, the calibration should be adjusted. The process does not need repeated execution, just need to adjust and position according to the fixed-point setting. Before needle calibration, needle or tube should be replaced according to the need. Whether the application of dripping glue or coating glue should be adjusted and executed according to this standard. The application quality such as packaging box sealing or circuit board coating glue for batch execution should be adjusted and executed according to this standard. Much depends on the accuracy of calibration.
Needle calibration should also check whether the needle is worn out due to long-term use of parts of the low glue accuracy, especially the need for precision gum dropping needle tube more often check whether the wear should cause the misalignment of gum dropping.