Dispensing technology has evolved over the years. The dispensing systems are configured based on the resin material used, the flow rate and shot size. These are some of the most important factors that are key to automating any dispensing application. A wide range of dispensing machines is used for different types of applications. From a table dispensing machine to automated turn-key solution lines with multiple operations, there are machines to suit every type of application. This includes standard meter mix and dispensing machines.
How dispensing systems work
Each dispensing machine is configured to meter mix and dispense any type of resin material based on the application. The resin and hardener are loaded in industrial syringes with barrel capacity ranging in volumes from 3cc to 55cc. These machines are easy to set up and can be ready for use within minutes. Most types of dispensing machines work on the time/pressure method where an increase or decrease in output can be achieved by an increase or decrease in time, pressure or both. A dispensing machine features air powered pistons that apply equal pressure throughout the material, which allows for consistent deposits. There is a wide range of dispensing tips from 14 – 32 gauges that allows the dispenser to achieve a variety of bead sizes. In conjunction with time, pressure and the right dispensing tip, the system has the ability to perform a variety of complex dispensing tasks.
The benefits of jetting technology
To meet the demands of automated adhesive application processes, several manufacturers use jetting technology. This type of dispensing technology offers numerous benefits. A jet has the ability to dispense material in smaller spaces. The process is also gentle on delicate assemblies. In addition, automated jet dispensers can apply a variety of viscosity ranges or specific fluids. It is also one of the most effective methods for high volume production and also offers low cost of ownership compared with some other adhesive dispensing methods. Current dispense jetting technology features mechanically, electrically, or pneumatically actuated pistons with a ball tip that dispenses fluid through a jet nozzle. As air pressure raises the piston, fluid flows into the nozzle. When the pressure is removed, a spring action returns the piston allowing the ball to shoot droplets fluid from the end of the nozzle.
A versatile dispensing technology
Jetting is one of the most versatile dispensing technologies that can dispense a variety of adhesives. The simple mechanism enables it to adapt to a wide range of adhesive fluids, dispense patterns and circuit board layouts.
This facilitates the implementation of multiple adhesive application processes with a single jetting dispenser. The mechanism requires less mechanical travel, which results in dispensing at much greater speeds. One of the biggest advantages of jetting is that it is a non-contact form of dispensing. This eliminates any risk of damage to the board or substrates. It is also most useful in applying adhesives to small spaces. Space constraints can pose a great challenge for needle dispensers to apply adhesives quickly, accurately and effectively, which can be easily overcome with jetting. Given these advantages, there is no doubt that the increasing demand for speed, accuracy, ease of use and reduced costs by the global manufacturing market makes jetting technology a viable solution for many types of applications.