At present, the needle tube type glue dispensing jet is being replaced. The so-called injection (jetting), belong to the new technology, it USES the nozzle type replace needle tube, solve the many problems. Jetting nozzle can be in need of the devices on the bottom fill above point glue, need not reaches the end face the following position. Jetting nozzle in the above board along the x, y direction, without vertical movement.
And some glue nozzle needle tube is different, and not to form a continuous flow of filling glue, instead of every second injection is more than 200 points after accurate measurement glue points. Along with the level of the nozzle, glue point to be moving to the formation of need, and truthfully matching with design visible lines, as well as other various graphics. Every time all the precise control injection, a jet by the formation of the glue points minimum 0.33 mm in diameter, this to apply patch glue need to into the precise control of occasions is very important.
Injection technology is a glue fast from nozzle jet, rely on the momentum that glue from glue nozzle. Each injection will spewing out a certain number of glue. The jet frequency is currently 100 hz to 200 hz, but will soon reach 1000 hz ac. Jets glue dispensing with needles from some difference. When the glue nozzle jet, from contact with substrate glue nozzle and separation has before. Each a plastic point injection to base board can form dot, line and graphics. In the process of moving position glue, glue without the Z axis direction of the head, so that saving exercise considerable time. Needles in glue, manipulator in X, Y, Z axis movement from the needle, glue out contact boards, by gravity and substrate surface tension from the glue needle separation. In each point glue is completed, along the Z axis have a significant movement, and then moved to the next point glue position.
The led the market also benefited from spray adhesive technology. Spray adhesive technology can spray including silica gel, UV curing with conductive adhesives etc of phosphorus wide range of optical materials, can be in high speed glue in accurate location of the glue and adhesive volume control. Spray adhesive can improve the accuracy of the high value of the high power LED the yield of the device. Used in the production of white light, the fluorescent powder and mix glue dispensing, make its consistency get good improvement
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