Selection of Glue Applying Robots

In the automotive manufacturing industry, adhesives are applied to engine hoods, gearboxes, crossbeams, and windows. They are also widely used in polyurethane adhesives, hot melt adhesives, and expanding foam adhesives. Automated adhesive application robots are also extensively used in the spot application of sealants for instruments and meters.

When selecting a glue-applying robot, the first step is to understand the properties of the glue, whether heating is required, whether flow control and viscosity adjustment are needed, etc. After determining the characteristics of the workpiece to be coated, the number of motion mechanisms needed and the most suitable motion process can be determined. Simultaneously, the working area can be confirmed, and the maximum effective range of motion can be determined. If multiple workpieces are being coated, the space required for the largest workpiece must be considered. Additionally, attention should be paid to the coordination between the fixture and the motion mechanism, and whether electronic positioning signals are required.

Finally, consider any special working properties, such as whether two or more glue guns are needed, whether the guns need to be changed after use, and the weight of the entire glue gun and its accessories. This will allow you to fully outline the structure of the machine and make an accurate selection.

In terms of electrical control, the speed attributes of the motion need to be determined, because not all rapid glue application is good; the speed must also be controlled based on the glue concentration and flow rate. This can be accomplished through appropriate electrical configuration. The most complex aspect is the use of the control system, as a mechanism requires numerous electrical signals, such as safety signals, workpiece arrival signals, glue application start signals, emergency stop signals, and glue application task completion signals. These all require a large number of I/Os. Typical systems don't have that many signal interfaces, so we can connect an external PLC. This saves costs and reduces the complexity of fault detection. Of course, this requires more effort in programming.

Most glue applicators use servo control, so there are multiple system options. The control signals are either digital or analog, depending on the customer's preference.

Of course, the selection of a glue applicator requires professional personnel to have detailed technical requirements and conduct data analysis before making a selection. In addition, they need to have extensive field application experience in the industry. Specific situations require specific analysis.