The MX-PRO proportional valve allows to vary and ensure a constant quantity of air supplied to the system with a simple analogue command, which the SCM software defines based on the characteristics of the edge to be glued. Through the implementation of this valve, it is possible to adjust the entire process with extreme precision and flexibility, in order to obtain the best result for each type of panel.
Nicolò Gianesini comments on the experience: "We have worked together for months, meticulously testing the result of this upgrade on every type of panel and edge and today we can say that this proportional valve, guaranteeing the right air flow rate, offers a perfect balance in the application of the edge. In addition to having a more stable thermoregulation, the performances are much higher and the whole process has been made more uniform".
"The input signal depends on three factors", explains Gianesini:
- the speed of the feed track of the piece to be edged (the higher the speed, the greater the amount of air that the machine will have to release)
- the height of the edge (the higher it is, the greater the energy required)
- the third, and certainly the most influential, is the type of edge (co-extrusion, for example, requires a greater amount of energy than a pre-glued and, consequently, a more intense flow of air).
Based on these three variables, the machine releases the necessary amount of air, thus optimizing the process".
Adriano Costanzi, product manager of SCM Group, adds: “In terms of edging, hot air proved to be an excellent solution and our experience has led us - thanks also to innovative components such as the MX-PRO valve - to excellent levels in terms of performance, speed and, above all, quality in the application".
The edge banding machines with laser gluing system allow greater speed and the possibility of applying edges with "significant" heights. On the other hand, hot air technology, with the same quality, has a lower purchase price and a lower operating cost, and this leads more and more companies to opt for this technology.
Not only that, the system with electric heaters allows to significantly reduce the time between one machining operation and the next (the coextruded edge is applied at a temperature of approximately 600 degrees and the machine takes no more than 100 seconds to reach these temperatures).