Developing Systems for Automatic Control of the Process of Ultrasonic Welding of Plastic Materials

In this paper, the main requirements and principles of designing systems for automatic control of the processes of ultrasonic welding of plastic materials are considered and formulated. A standard block diagram of systems for automatic control of installations for ultrasonic welding of plastics is developed. It can be used not only to describe the operation of the existing systems but also to develop new systems based on standard structural elements and microprocesses. The paper describes the criteria applied to welding operations that can, to a certain extent, compensate for the influence of the change in amplitude and frequency of vibrations, static pressure, and time of welding on the quality of the welded joints. An algorithm is developed that ensures that each operation is performed according to a set time. A magnetostrictive sensor that can be used to collect valuable information about the welding process or the condition of the polymer at each instant of the technological process is developed to control the ultrasonic welding processes.

References

[1] Volkov S.S. Svarka i skleivanie polimernykh materialov [Welding and gluing of plastics]. Moscow, Khimiia publ., 2001. 376 p.

[2] Volkov S.S. Raspredelenie moshchnosti v ul’trazvukovoi svarochnoi sisteme pri svarke polimernykh plenok [Power distribution in ultrasonic welding system at welding of polymer films]. Svarochnoe proizvodstvo [Welding International]. 2012, no. 10, pp. 42–46.

[3] Volkov S.S. Main welding parameters of ultrasound contour welding of polyethylene vessels. Welding international, 2011, no. 25(11), pp. 898–902.

[4] Volkov S.S. Using piezoelectric oscillating system for welding synthetic fabrics. Welding international, 2013, no. 27(9), pp. 720–724.

[5] Gladkov E.A. Upravlenie protsessami i oborudovaniem pri svarke [Management of processes and equipment for welding]. Moscow, Akademiia publ., 2006. 432 p.

[6] Gladkov E.A., Brodiagin V.N., Perkovskii R.A. Avtomatizatsiia svarochnykh protsessov [Auto-matization of welding processes]. Moscow, Bauman Press, 2017. 426 p.

[7] Klimov A.S., Gerasimov A.A., Anuiborov N.P., Goncharov M.S. Komp’iuternyi kompleks dlia issledovaniia i upravleniia protsessami svarki [Computer system for the study and control of welding processes]. Svarochnoe proizvodstvo [Welding International]. 2006, no. 8, pp. 18–20.

[8] Volkov S.S. Ultrasonic butt welding of rigid plastics. Welding International, 2013, vol. 27 (3), pp. 63–66.

[9] Volkov S.S. Energeticheskie pokazateli raboty akusticheskogo uzla pri ul’trazvukovoi svarke [The energy performance of the acoustic node during ultra-sonic welding]. Svarka i diagnostika [Welding and diagnostics]. 2012, no. 6, pp. 40–44.

[10] Volkov S.S., Shestel L.A., Sokolov V.A. Heated tool ultrasonic welding of elastic containers produced from fluoroplastic film. Welding International, 2016, vol. 30(6), pp. 492–496.