The sector of flat magnet wires for the production of transformers and generators is constantly evolving; this means, for the producers of taped cables, increasingly higher quality level and technical performance. Consequently, this requirement translates, for us machine manufacturers, into the incipit to work on a generational and performance leap of WTM taping machines specific for this process, to produce cables that meet the final request.
The study of the taping process for magnet cables has highlighted the importance of increasing both quality and production efficiency; while keeping the guarantee of mutual overlapping of each tape, this translates into a refinement of the kinematics, an accurate choice of components and an extreme synchronization of each element.
WTM has revolutionized and improved its solution dedicated to this particular type of product, in order to offer the synchronization of multiple concentric taping heads (up to four) at almost double the speed compared to the previous version, to increase productivity and better enhance the investment.
The synchronization of the taping heads is managed by the WTM Visio System, a fully integrated control system equipped with one or more high-speed cameras that continuously monitor and adjust - in closed-loop control - the positioning of the tape applied by a taping head with respect to the tape positioned by the previous one.
This is a high-performance and fully automatic process, whose high precision reduces errors and waste and guarantees the expected insulation construction.
The layout of our magnet cable taping machine is composed of:
- traversing pay-off with wire tension managed by torque control;
- straightening and brushing unit for wire preparation;
- taping modules with fully motorized taping heads, equipped with WTM dynamic dancer that ensures stable and constant application of the tape on the conductor;
- Visio System and control software for adjusting the position of each tape with respect to the previous one;
- two-caterpillar pulling system, which control the line speed and cable tension;
- spark tester for in-line control of the product quality;
- take-up with cable tension managed by torque control, and wireguide with traversing movement;
- paper feeder, installed on the take-up, which automatically applies a layer of paper on the reel during the winding of the final cable.
The technical characteristics can be customized according to the specific production needs of each Customer.
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