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Paper flaw detection system and method

A defect detection and paper technology, applied in the direction of optical defect/defect test, measuring device, material analysis through optical means, etc., can solve problems such as quality accidents, defect detection that cannot be realized by visual inspection, and missed detection of common defects, so as to avoid The effect of defect detection

Pending Publication Date: 2022-03-04
苏州凌云光工业智能技术有限公司 +2
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  • Description
  • Claims
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Problems solved by technology

[0003] However, there is a special case where defect detection cannot be achieved by visual inspection: double sheet
Once the product to be inspected passes through the visual camera in the form of completely overlapping double sheets, the camera can only detect the upper product. If the lower product has a large defect, it will cause ordinary defects to be missed, and lead to quality accidents.

Method used

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  • Paper flaw detection system and method
  • Paper flaw detection system and method
  • Paper flaw detection system and method

Examples

Experimental program
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Embodiment 1

[0023] figure 1 It is a schematic structural diagram of a paper defect detection system provided in Embodiment 1 of the present invention, and this embodiment is applicable to the detection of paper defects.

[0024] Such as figure 1 As shown, a paper defect detection system provided by Embodiment 1 of the present invention includes: a primary detection device 12 and a secondary detection device 13 fixed on a transmission device 11, and the transmission device 11 is used to transport the paper to be tested.

[0025] In this embodiment, the transmission device may be a device with a transmission function such as a conveyor belt. The transmission device transmits the paper to be tested through the first-level detection device and the second-level detection device fixed on the transmission device in turn. A device for detecting defective sheets including non-perfectly overlapping double sheets in the sheet to be tested.

[0026] The transmission device can be driven by a motor...

Embodiment 2

[0098] image 3 It is a flow chart of a paper defect detection method provided in Embodiment 2 of the present invention. This embodiment is applicable to paper defect detection, and the method can be executed by the paper defect detection system provided in the above embodiment.

[0099] like image 3 As shown, the method specifically includes the following steps:

[0100] S101. Using a primary detection device to detect completely overlapping double sheets of the paper to be tested on the transmission device.

[0101]It should be noted that the transmission device is a device for transmitting the paper to be tested for paper detection, and the primary detection device is fixed on the transmission device to detect completely overlapping double sheets of the paper to be tested. An ultrasonic sensor and a first control module are installed in the primary detection device, and the ultrasonic sensor is connected to the first control module through a single-sheet detection signal...

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Abstract

The invention discloses a paper flaw detection system and method. Comprising a first-stage detection device and a second-stage detection device which are fixedly arranged on a transmission device, and the transmission device is used for conveying paper to be detected; the first-stage detection device is used for detecting completely overlapped double pieces of paper to be detected on the transmission device; and the secondary detection device is used for detecting defective paper on the paper to be detected on the transmission device, and the defective paper comprises two pieces of paper which are not completely overlapped. According to the embodiment of the invention, a double-sheet detection function can be realized, so that the problem of defect missing detection caused by double sheets is avoided.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of double-sheet detection, and in particular, to a paper defect detection system and method. Background technique [0002] With the continuous development of printing technology, the printing industry's requirements for the quality of printed products have also been continuously improved, and the quality control has even become so fine that a "defective product" is not allowed to flow into the downstream market, especially the barcode defects or trademarks on the products in circulation. defect etc. Without considering special circumstances, the relatively advanced visual inspection equipment on the market can already meet the demand of not letting go of any defect. [0003] However, there is a special case where defect detection cannot be achieved by visual inspection: double sheets. Once the product to be inspected passes through the visual camera in the form of completely overlappi...

Claims

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Application Information

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IPC IPC(8): G01N21/89
CPCG01N21/8914G01N2021/8917
Inventor 宋骄储进荣吴铁成包振健姚毅杨艺
Owner 苏州凌云光工业智能技术有限公司
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