Two factors affecting the positioning accuracy of holographic positioning hot stamping technology

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Holographic hot stamping technology is divided into continuous pattern hot stamping and independent pattern hot stamping according to the characteristics of holographic pattern marking. Independent pattern hot stamping is also called holographic positioning hot stamping technology. The actual application time is not long, and it belongs to newer high technology. The key material used in the holographic electrochemical aluminum production is difficult and the process is extremely complicated.

Holographic galvanic aluminum is produced by manufacturers using spatial frequency coding based on the principle of laser interference. The holographic pattern marks are arranged in a regular continuous manner on the anodized aluminum, and each pattern has an alignment cursor next to it. The working principle is that the laser electronic eye in the machine equipment positioning and recognition system feeds back the information to the equipment information processing center (onboard computer) through the illumination of the cursor, and then the computer gives the jump motor a command to jump the distance and realize Positioning.

Holographic galvanic aluminum and electromechanical equipment are directly related to the accuracy of holographic positioning, which not only involves anti-counterfeiting, but also affects the aesthetics of the product. Strictly speaking, each pattern of holographic anodized aluminum must be equidistant. Due to the inevitable error in the process of producing anodized aluminum, as the number of patterns increases, the error is also quantified. When accumulated to a certain extent, there will be a large space. This will affect the accuracy of positioning. The positioning accuracy of the machine positioning system also has an equally important influence on the holographic positioning accuracy. Holographic positioning requires high positioning accuracy, generally required to be controlled within 0.2 mm; the running speed of the equipment should also be moderate, and the speed of the machine too fast or too slow will cause the positioning deviation.

(Author: Guangxi Zhenlong Color Printing Packaging Co., Ltd.)


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