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Method and system for on-line detection of reverse line of paper secure line

A detection system and detection method technology, applied in the direction of using optical devices to transmit sensing components, metal processing, etc., can solve the problems of reducing paper production efficiency and wasting human resources, and achieve the effect of reducing production efficiency and labor costs

Active Publication Date: 2011-04-06
BAODING BANKNOTE PAPER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned defects, the purpose of the embodiments of the present invention is to provide an online detection method for paper safety thread reversal, to solve the problems in the prior art that human resources are wasted by manual detection and screening of paper safety thread reversal and paper production efficiency is reduced.
[0008] Another purpose of the embodiments of the present invention is to provide an online detection system for paper safety thread reversal, to solve the problems in the prior art that human resources are wasted by manual detection and screening of paper safety thread reversal and paper production efficiency is reduced.

Method used

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  • Method and system for on-line detection of reverse line of paper secure line
  • Method and system for on-line detection of reverse line of paper secure line
  • Method and system for on-line detection of reverse line of paper secure line

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Experimental program
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Embodiment 1

[0028] Such as figure 1 Shown is a schematic structural diagram of an on-line detection system for paper security thread reverse thread provided by Embodiment 1 of the present invention. The system includes a cross-cut mark sensor 101 , a reverse thread detection sensor 102 , a synchronous encoder 103 and a processing device 104 , wherein the cross-cut mark sensor 101 , the reverse thread detection sensor 102 and the synchronous encoder 103 are all connected to the processing device 104 .

[0029] The cross-cut mark sensor 101 is mainly used to detect the cross-cut mark on the continuous paper, once it detects the cross-cut mark, it sends a pulse signal to the processing device 104 .

[0030] The anti-thread detection sensor 102 is used to detect the security thread. There are many kinds of security threads, so there are many types of corresponding sensors. For example, for a security thread with a holographic reflective surface, a photoelectric sensor can be selected. Nowada...

Embodiment 2

[0038] Such as image 3 Shown is a schematic structural diagram of an on-line detection system for reversed thread of a paper security thread provided by Embodiment 2 of the present invention. The reverse thread online detection system 300 of the paper security thread includes a cross-cut mark sensor 301, a reverse thread detection sensor 302, a synchronous encoder 303, and a processing device 304. Their functions are similar to those in Embodiment 1, and will not be repeated here.

[0039] However, it should be pointed out that, in this embodiment, the reverse thread detection sensor 302 is composed of more than two sensors. Due to the existence of a swing range in the security line, the range to be detected is generally relatively large, which exceeds the detection range of the sensor. If a sensor with a large detection range is selected, the cost will increase significantly. Therefore, the inventor solves this problem by using a combination of multiple sensors in this embo...

Embodiment 3

[0048] The embodiment of the present invention also proposes an online detection method for paper security thread reverse thread, such as Figure 7 As shown, the method includes:

[0049] S101: Obtain information about the cross-cutting position and moving distance of the paper. The cross-cut position information of the paper is detected by the cross-cut position sensor, and the paper moving distance information is detected by the synchronous encoder installed on the rotating roller. Specifically, the synchronous encoder detects the movement of the paper by sending pulse codes. They transmit the detected cross-cutting position and moving distance information to the processing device.

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Abstract

The embodiment of the invention provides a system and a method for the on-line detection of reverse lines of paper secure lines. The system comprises a transverse cutting mark sensor, a reverse line detection sensor, a synchronous coder and a processing device, wherein the transverse cutting mark sensor is used for detecting paper transverse cutting positions; the transverse cutting mark sensor, the synchronous coder and the reverse line detection sensor are all connected with the processing device, wherein the reverse line detection sensor is used for detecting the forward and reverse of thesecure lines; the synchronous coder is used for detecting the paper moving distances; and the processing device is used for processing signals of the transverse cutting mark sensor, the synchronous coder and the reverse line detection sensor and finally judges whether the secure lines are reverse lines or not according to the detection result of the reverse line detection sensor. The embodiment of the invention not only reduces the labor cost of the manual screening of the f secure lines, but also does not reduce the production efficiency of the papers because a manual screening step exists.

Description

technical field [0001] The invention relates to the field of paper processing, in particular to a method and system for on-line detecting reversed thread of paper safety thread. Background technique [0002] In the papermaking process, special metal wires or different polyester plastic wires are embedded in specific positions in the paper base. Microprinted lines, fluorescent lines, etc. are called safety threads, and strip-shaped safety threads are called for the safety line. Miniature hollow or non-hollow graphics can be printed on the security line, and a complete line or an intermittent line can be seen when viewed with light. The security thread has a wide range of uses, mainly used for anti-counterfeiting of various certificates of government agencies, various bills of financial institutions, securities, medicine, clothing, food, cosmetics, machinery, equipment, tea, glass and other trademarks. [0003] However, when the security thread is buried in the paper copying...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/36B26D7/27
Inventor 曹秀痕田增建马鸿胜耿洪琪曹鹏李伟杰金树海苏新禹
Owner BAODING BANKNOTE PAPER CO LTD