During dispensing, dispensing equipment will use dispensing needles for dispensing. Apart from dispensing glue dispensing equipment, we can also choose glue dispensing needles with different inner diameters to control the amount of dispensing and dispensing, so that it is convenient for dispensing. The glue needles are used in many industries, such as electronic components, mobile phone keys, LED, semiconductor manufacturing and so on. In each industry, the requirements for the glue needles are different. Then, when selected, the needles can be selected according to those requirements.
1. The viscosity of the glue used
The viscosity of the glue used in some industries is relatively high, which points out the glue point is relatively small, easy to appear the phenomenon of drawing; and some glue viscosity is relatively low, it will point out the glue point is relatively large, in the dispensing process will be leakage glue, glue and other phenomena, effects of dispensing work. For some of the larger viscidity glue, the glue dispensing needle with longer length can be used for dispensing, while the glue with low viscosity can use shorter length dispensing needles for dispensing, so as to avoid the phenomenon of wire drawing and glue leakage.
2. Demand for product glue
After selecting the length of the needles, it is necessary to select the appropriate inner diameter and size of the needles according to the requirements of the product's glue. There are many kinds and specifications of dispensing needles. Some needles have smaller inner diameters, and the amount of glue coming out is relatively small. On the contrary, the size of some needles is larger, so the amount of glue dispensing will be larger.
3. The properties of the glue used
Instant adhesives, UV glue, two glue solidification speed faster, so the use of these two kinds of need to use special glue dispensing needle, avoid the use of glue solidified in the needle, affect the dispensing work.