Sealing & Gluing


From an installation point of view, sealing applications are very closely related to arc welding. The most important ability for the robot is to follow a path accurately with good control over speed. Automated sealing has been very difficult to get right in the past, a process that works very well at one speed may run into problems if it is accelerated.

Over many years the problems have been ironed out and now sealing systems are not only very advanced but also have a great deal of connectivity with the robot meaning a good even bead of sealant will be applied. Robots are frequently used for sealing applications in the car industry using RTV to seal in windows, keep out water etc. There are two basic setups, either the sealant head is fixed and the robot moves the part or the part is fixed and the robot moves the sealant head.

There are a few robots that are designed more or less specifically for sealing like the ABB IRB 3400L which has a very low payload but a very long reach and a slender arm that could access a complete car body. However any standard robot can be used for sealing it is just a matter of selecting the right reach and payload for the job.

Pictured is an ABB IRB 140 robot. Affectionately known as the monkey robot due to its high speed, great range of movement and the fact it can be mounted on a wall or overhead. The 140 is the the perfect robot for sealing or gluing when only a small reach is needed as it has excellent path following and its controller allows fantastic control over analogue signals.