The effect of the dispensing effect of the dispenser is mainly the size of the needle, the amount of dispensing, the distance between the needle and the work surface, the pressure of the glue, the viscosity of the glue, the curing temperature curve, the temperature of the glue, the bubbles in the glue, and the need Specially set fluids and more. So, how to make the click of the dispenser better?
First: glue difference.
Instant glue: Use safety piston and Teflon-lined metal needles for water-based instant glues. For thick instant glues, tapered oblique needles are required, and PP needles are required for flexibility.
UV glue: Use amber syringe, white piston and oblique needle (can block ultraviolet rays) If you use other types of needles, please order needles that can block ultraviolet rays;
Light-curing glue: use black opaque syringe to avoid light sensitivity;
Anaerobic adhesive: use 10CC syringe and white PE universal piston;
Sealant and paste-like fluid: If the white piston is used to rebound severely, please use the safety type and use the oblique needle;
For the adjustment of various parameters, the method of point and surface should be used. Changes in any one parameter will affect other aspects. At the same time, the generation of defects may be caused by multiple aspects. The possible factors should be checked one by one.
Second: The size of the dispensing amount is generally considered to be half the diameter of the product, so as to ensure that there is sufficient glue to bond components and avoid wasting glue. The length of time determines the amount of dispensing, so determine the dispensing time according to the temperature and the characteristics of the glue.
To be continued ....
