Because of the visual automatic dispensing machine adopts automatic detection system, reaction sensitivity of the dispensing valve to achieve immediate effect, the working parameters modify the meaning is the operator through visual observation system, the sensitivity of the dispensing valve to reach very high level, with the change immediately, so long-term use will affect the dispensing the valve works, if there are no special requirements would be best to reduce the workload to reduce the burden of dispensing valve, if the implementation of batch automatic dispensing work to do daily maintenance accessories. We usually say that the bubble will disappear after mixing the glue evenly, in fact this kind of cognition is wrong, no matter how powerful the work of automatic dispensing valve will not completely eliminate the bubbles in the glue, can only be close to completely eliminate state, will affect the glue glue when the bubble is too large to use effect, can replace the needles to solve the problem of excessive glue bubbles, such as oblique conical needle.