Today, there are a number of metering and dispensing systems available to meet the needs of various tasks. Almost every Meter-mixing and Dispensing (MMD) Systems, however, have the same configuration and operational mechanism as shown below:
1. Material Supply System
The structure of the material supply system will be determined by the manufacturer’s original liquid size and vacuum dispensing demand.
To take advantage of economies of scale, drums, pails, and totes are frequently used in mass production to package larger amounts of adhesives and sealants. There are three common methods for unloading material from these containers: Manual pouring into a pressure pot or tank, Pumps, and Vacuum unloading system.
The simplest and most primitive method is manual unloading. Materials less than 1,000 cps are considered ideal for hand filling.
Pros: Many pressurized containers also offer wide openings and straight-wall designs that speed manual filling and cleaning
Cons: Labor-intensive and possibility that air is added into a liquid part, which can have negative effects on the specification of liquid
Using a pump is an alternative to manual pouring techniques for feeding material from the drum into the pressure pot or tank. Pump technology is known as the heart of the feeding system, therefore, it is designed with many additional functions to suit the changing requirements of the industries.
(1) Auto-filling and fast pumping technology ensures consistently good feeding performance
(2) The pressure tank can be equipped with different additional functions such as a heater that secures the viscosity of liquid all over the pumping process
Cons: Pump may experience cavitation when air makes its way into the mix
To solve the problem of air bubbles in the above methods, vacuum function has been added to the system.
After being pumped into the tank, the material will be vacuumed to completely remove air bubbles, thereby ensuring the quality of the material when dispensed in the products’ surface. This makes this method the perfect choice for applications where high accuracy is required.
About these pressure pots or tanks, they provide protection against corrosion with wetted fittings and tank casings made of stainless steel. They can also improve bonding performance by incorporating adhesive filters that remove contaminants.
Bulk unloaders are used to dispense high-viscosity, ambient-temperature adhesives and sealants for a wide range of manufacturing applications. Our maximum 40-liter capacities, durable design provides superior flow properties and maximum operating time.
2. Metering Module
Every two-part material has its own mixing ratio which must be followed strictly if producers want a mixture that performs flawlessly.
A metering unit is therefore necessary for precise volumetric dispensing of multi-component adhesives. With the use of meters, adhesives may be applied in precise amounts at the right pressures and times.
3. Fluid Pressure Detector
This module gives the uniqueness and excellence to the Gluditec’s two-component (2K) Meter-mixing and Dispensing System. When the glue is clogged or one component of the 2K glue is not injected into the valve, only one component will be mixed. This can lead to the phenomenon when the glue does not dry and the properties of the glue cannot be guaranteed.
Therefore, Gluditec’s system is equipped with a Fluid Pressure Detector that will notify the user when the above phenomena are detected. Thereby ensuring the amount of glue is injected evenly and with the correct mixing ratio.
4. Dispensing Module
Dispensing Module basically combines a dispensing valve and a static or dynamic mixing tool.
A two-component (2K) dispensing valve will keep the base and catalyst components separate until they enter a static or dynamic mixing tube. The valve will be attached on the robot arm (or Z axes with desktop robot) and will move in accordance with the user’s program.
The two components will be combined in mixing tips. These tips are disposal materials that make dispensing module maintenance easier and more economical.
5. Motion Control Module
Finally, the most significant module in the establishment of an automated system is robot motion control. The mixed compound is delivered to the workpieces by this module. Manufacturers may simply control cycle time, manufacturing pace, and accuracy by programming the robots.
Advanced dispensing systems are equipped with additional functions such as defect inspecting function, which significantly helps to reduce costly repairing activity.
Furthermore, the working space of the robot can be customized to fit with manufacturers’ demands of productivity and cycle time. The modular construction also helps any robot system suitable for the applications can be integrated into your production line.
Choosing the ideal Two-component liquid dispensing system has never been an easy task. For more advice from our experts, get in touch with us:
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