LED bulbs are also a spherical light emitting semiconductor, which have the same characteristics as ordinary light-emitting semiconductors, which are composed of two PN nodes. The current can be converted to light energy through the semiconductor. Can send out visible light, infrared, ultraviolet. However, the light emitted from LED is not fixed, so we use glue glue to guide LED bulbs to give out the effect of lighting we want, that is to say, LED bulbs will not give out all kinds of light at once. With the rapid development of automation technology, the traditional dispensing machine is gradually to keep up with the production process requirements, the need for a performance of production, not only to complete and efficient operation, high quality glue dispensing, and can automatically control, automatic glue on the glue volume is more uniform, will not lead to waste of glue have a lot of functions, is a desktop type dispenser, a great solution for now recruitment difficult situation, dispensing function of more than one person to operate a complete batch production mode, greatly reduce the labor cost of spending. Better work effect of mechanical arm supporting the main dispenser in the desktop in the water dispenser, through a plurality of dispensing arm can complete dispensing work on workpieces in a certain period of time, to ensure the product is coated with high efficiency even without overflow and other defects, effectively improve the quality and usefulness of LED lamp.