How to control the flow of the glue dispenser

Three factors of equipment affecting glue output

a. The setting of the glue dispensing time of the glue dispenser

According to work experience, the size of the glue dot diameter should be half of the product spacing. This ensures that there is enough glue to bond the components without overdosing. The amount of glue dispensed is determined by the length of time set by the automatic dispenser. In practice, the setting time for dispensing should be selected according to the production conditions (room temperature, viscosity of glue, etc.).

b. Pressure setting of the glue dispenser

The glue dispensing equipment provides a certain pressure to the needle tube or glue gun to ensure the glue supply. The pressure determines the glue supply amount and the glue outflow speed. If the pressure is too high, it will easily cause the glue to overflow and the amount of glue is too large; if the pressure is too small, there will be intermittent glue dispensing and leakage points, which will lead to product defects. The pressure should be selected according to the properties of the glue and the temperature of the working environment. High ambient temperature will reduce the viscosity of the glue and improve its fluidity. At this time, the pressure value needs to be lowered, and vice versa.

c. The size of the needle of the dispensing machine

In practice, the inner diameter of the needle should be about 1/2 of the diameter of the dispensing point. During the dispensing process, the dispensing needle should be selected according to the size of the product. Different needles should be selected for products with different sizes, which can not only ensure the quality of glue points, but also improve production efficiency.

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