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Laser automatic edge hooking method for holographic bronzing anti-counterfeiting film strip

A technology of anti-counterfeiting film and hooking, applied in laser welding equipment, metal processing equipment, instruments, etc., can solve the problems of low production efficiency, difficult to control accuracy, slow processing speed, etc., achieve fast marking speed, beautiful appearance, good effect

Active Publication Date: 2020-08-14
湖北银琅兴科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the method of water washing has the problems of insufficient fineness and low precision. On the other hand, it needs drying steps and produces waste water.
[0004] There are also laser engraving technology for one-time dealumination. Due to high processing precision and high positioning requirements, there will be disadvantages such as difficult control of accuracy and slow processing speed. If you want to get the hollow dealumination effect of the pattern edge, the production efficiency is relatively low.

Method used

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  • Laser automatic edge hooking method for holographic bronzing anti-counterfeiting film strip
  • Laser automatic edge hooking method for holographic bronzing anti-counterfeiting film strip
  • Laser automatic edge hooking method for holographic bronzing anti-counterfeiting film strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, it is the regular pattern that needs to be formed on the anti-counterfeiting film belt 1, such as the concentric circle pattern area 2; in order to obtain a special pattern area that can be quickly detected and screened by the CCD, 5000 lines are used in the first dealumination Density plate-making hook, that is to say, use 5000 line density in the concentric circle pattern area 2, and use 1500 line density in the other area 3 for the first dealumination. At this time, the aluminum layer in the concentric circle pattern area 2 and the edge still exists, and there is no Hollow out; there is a clear contrast between the concentric circle pattern area 2 and the other area 3, and the hub of the pattern is more distinct;

[0035]Then carry out secondary dealumination to form a hollow pattern; because its outline is clearer and easier to be identified, the computer can significantly save comparison time and quickly find the dealumination position, a...

Embodiment 2

[0037] Such as figure 2 As shown, it is the garbled pattern that needs to be formed on the anti-counterfeiting film belt 1, such as a plurality of garbled superlines 4;

[0038] When drawing, for random garbled super-line 4, you only need to adjust the super-line plate-making line density to more than 5000, and you can form random super-line garbled patterns during marking;

[0039] Then carry out secondary dealumination to form a hollow pattern; because its outline is clearer and easier to be identified, the computer can significantly save comparison time and quickly find the dealumination position, and quickly complete the comparison in the computer, and the computer directs the laser according to the imaging The marking machine deals aluminum on the anti-counterfeiting film strip.

Embodiment 3

[0041] This embodiment provides a marking machine and its connection and installation structure for realizing the edge hooking method.

[0042] Such as image 3 As shown, a marking machine and its connection and installation structure for realizing the crochet method include a base 5 on which a marking platform 12 is arranged, and the anti-counterfeiting film belt plays a role in the winding and unwinding device. Next, the film can be continuously moved on the marking platform 12; the right side of the base 5 is provided with an electric slide 6, and the electric slide 6 is screwed with a column 7, and the column 7 is close to the marking One side of the standard platform 12 is provided with a slide rail 8, the slide rail 8 is equipped with a side slide block 9, and the slide block 9 is horizontally connected with a telescopic rod 10, and the end of the telescopic rod 10 is installed The plate is connected with a marking mechanism 11, and a CCD camera and a laser marking galv...

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Abstract

The invention discloses a laser automatic edge hooking method for a holographic bronzing anti-counterfeiting film strip. The method comprises the steps of plate making and edge hooking, wherein when drawing is carried out on an anti-counterfeiting film strip, edge hooking is carried out on the edge of a pre-designed pattern by 4000-6000 linear density, and the anti-counterfeiting film strip is enabled to obtain a pattern area which is detected and discriminated by a CCD detection device; and pattern dealumination, wherein the pattern area is shot by the CCD detection device, the shot pattern is subjected to pixel comparison with a standard pattern pre-existed in a computer, and the computer instructs a laser marking machine to dealuminate the anti-counterfeiting film strip according to imaging to form a hollowed holographic pattern. According to the laser automatic edge hooking method, a high-precision and high-speed laser pattern edge hooking effect can be achieved, and the method issuitable for large-scale production and processing of film strip marking where only pattern edge hooking or special super lines is needed; and moreover, the hollowed edge hooking precision of the formed holographic pattern is high, the marking speed is high, the method can be applied to any variable pattern, the appearance is attractive, and the effect is good.

Description

technical field [0001] The invention relates to the technical field of holographic anti-counterfeiting processing, in particular to a method for automatic laser delineation of holographic bronzing anti-counterfeiting film strips. Background technique [0002] The holographic image is a rainbow holographic photo made of a general holographic image as the shooting object and processed by a series of procedures. For example, if the photosensitive sheet of photoresist is used to replace the hologram taken by ordinary photos, after exposure treatment, a relief-type phase hologram is obtained, which is the master for making rainbow holograms. The surface of the master is full of uneven interference fringes, the fineness of which can reach more than a thousand per millimeter. These relief-like fringes record the light wave intensity and phase information of the object being photographed, realizing holographic recording. Then use vacuum coating or electroless plating to coat a thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/364B23K26/60B23K26/70G03H1/00
CPCB23K26/364B23K26/702B23K26/60G03H1/0011G03H2001/0016
Inventor 于洋洋
Owner 湖北银琅兴科技发展有限公司
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