METHOD AND APPARATUS FOR MANUFACTURING AN ELECTRIC HEATER

摘要

In the manufacture of an electric heater, means 24, 26 is provided for feeding and guiding an elongate corrugated metal ribbon heating element 14 progressively into overlying edgewise relationship with a base 2 of thermal and electrical insulation material. Means 6, 8 is provided for supporting the base 2 and for effecting relative motion between a surface of the base 2 and the means 24, 26 for feeding and guiding the heating element 14, such that motion of the base 2 is synchronised with feeding of the element 14. Further means 28 is provided for applying localised edgewise pressure to the heating element 14 as it is progressively fed and guided into the overlying edgewise relationship with the base 2, to urge the heating element 14 towards the base 2 and cause an edge portion 22 of the heating element 14, or one or more parts 22 secured to the heating element 14 and extending edgewise therefrom, to become secured by embedding in the base 2.