A Novel Design of Automatic Welding System for White Watermarks

Abstract:

Watermarks, which are often used as security features of banknotes to prevent counterfeiting, are made onto the banknote paper using the dandy roll that is a roller of copper net with white watermarks accurately welded on it. The positioning accuracy of the white watermarks on the copper net is critical. However, the current technologies are inefficient, inaccurate and/or expensive. Therefore, in this paper a novel design of automatic system for white watermark is proposed. It is realized by thorough analysis of the welding procedure of the white watermark, design of a novel mechanical structure for the automatic feeding and accurate positioning of the white watermark to its welding position on the copper net and integration with the available spot welder. Compared with the current technologies, the proposed design could greatly improve the efficiency and accuracy for welding the white watermarks, and its total cost is low. Therefore, the proposed design could be adopted in the banknote printing industry to realize the automatic welding of the white watermarks.

• Periodical: Applied Mechanics and Materials (Volumes 365-366)
• Pages: 52-56
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.365-366.52
• Online since: August 2013
• Authors: Xiu Quan Cao, De Ping Yu, Chao Li, Jin Yao
• Keywords: Automatic Welding, Banknotes, White Watermark

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