Hot stamping system with automatic hot stamping quality detection device

Abstract

The invention discloses a hot stamping system with an automatic hot stamping quality detection device. The hot stamping system comprises a laser transfer film unwinding device (210), a laser transferfilm winding device (220) and an imprint transfer device (230), wherein the imprint transfer device is installed between the laser transfer film unwinding device and the laser transfer film winding device; the automatic hot stamping system further comprises the automatic hot stamping quality detection device that is arranged in the downstream of the imprint transfer device (230), and comprises a light source (101), an image acquisition device (102) and an image processing device (103).

Description

technical field [0001] The invention relates to the mechanical field, in particular to a hot stamping system with an automatic hot stamping quality detection device. Background technique [0002] Hot stamping, commonly known as "bronzing", has a long history in China. In the past ten years, hot stamping technology has been developed rapidly and widely used, such as hot stamping for paper products, hot stamping for textiles, hot stamping for decorative materials, hot stamping for plastic products, etc. [0003] Hot stamping is an important means of surface decoration of plastic parts. It uses the heated hot stamping head to press the metal or paint layer on the hot stamping film to the surface of the workpiece to achieve the purpose of decoration or marking. [0004] Existing hot stamping methods generally include flat ironing and rolling ironing. Flat ironing, as the name implies, refers to the impression that the reference surface is flat, and it is hot stamped on a flat...

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Problems solved by technology

[0005] Existing hot stamping equipment generally does not include quality inspection devices for hot stamping products. At present, the quality inspection of hot stamping products is mainly carried out manually or quality inspection equipment is purchased separately. The existing testing equipment is mainly used for product defect detection. It is based on the defect feature detection of the inspected image or the direct comparison with the reference image, but this detection method is prone to false detection when the hot stamping product is detected, because the hot stamping product is irradiated by the light source. Reflection and other phenomena are prone to occur under the environment, and the flatness of different products is different. The different flatness of the target area (referring to the radian of the flat product itself) will bring different reflection effects, but this product cannot be identified by existing methods The image difference caused by different radians

Moreover, since the existing detection methods are all based on the detection of the entire product, in fact, the formation of the secondary product of the hot stamping product may be more caused by the hot stamping process, and the existing methods generally want to separately detect the hot stamping part. Complicated image segmentation, especially for relatively complex bronzing patterns, is more difficult to achieve

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