CN101988905B - Printing product detection equipment - Google Patents

Abstract

The invention discloses printing product detection equipment, comprising a paper feeding device, a paper transmitting device, a detection device and a finished product stacking device, wherein the paper feeding device, the paper transmitting device and the finished product stacking device are sequentially arranged in a machine set way along a paper advancing direction from an upstream side to a downstream side, the detection device is arranged opposite to the paper transmitting device so as to facilitate the detection of paper passing through the paper transmitting device, and the detection device is a high-precision and high-efficiency detection device comprising a lighting system, a CCD (Charge Coupled Device) image pickup system, an image processing system and an image comparison system. The printing product detection equipment can be applied to high-precision and high-efficiency detection of paper with various materials and breadths.

Description

Printing product detecting equipment

Technical field

The present invention relates to printed matter checkout equipment field, particularly relate to a kind of multi-functional printing product detecting equipment.

Background technology

For printed matter, tend to have such or such defect because of the defect of paper itself and/or the various factors in printing process.Therefore,, after completing printing, printed matter is carried out to the important step that strict detection is whole printing work.

Meanwhile, along with the raising of people's living standard and aesthetic standards, the quality of printed matter has also been proposed to more and more higher requirement.Especially for the print product that obtains the compound of widespread use in wrappage fields such as cigarette pack, packaging for foodstuff and medical packagings and shift gold, silver, laser paper because thering is the advantages such as decoration result is good, high-grade, exquisite and false proof, due to the intrinsic Grating Properties of radium-shine paper product itself, make to print rear quality inspection difficulty large, quality inspection efficiency is lower.

At present, although occurred in prior art that some are specifically designed to the equipment that printing detects, yet these equipment but exist, and quality inspection precision is lower, the breadth of the paper that can detect and the first-class defect of bill of materials, especially for the defect of some radium-shine materials as: version seam, bright spot, membrane etc. cannot be distinguished, thereby its practicality is not high.In production practices printing enterprise to a great extent or rely on and manually to detect, and that manual detection causes standard to be difficult to control is consistent, and inefficiency, cost of labor expense are higher.

Summary of the invention

The present invention is intended to one of technical matters at least solving existence of the prior art.

For this reason, one object of the present invention is to provide a kind of high precision of applicable multiple material, the printing product detecting equipment of high detection efficiency.

In order realizing, to achieve the above object, according to printing product detecting equipment of the present invention, to comprise:

Paper feeding device, sheet feeding, pick-up unit, finished product bunching device, wherein said paper feeding device, sheet feeding, finished product bunching device on paper direct of travel from upstream side downstream side set gradually into set type and arrange, described pick-up unit and described sheet feeding are oppositely arranged to detect described sheet conveying apparatus and are set up the paper passing through, and described pick-up unit further comprises:

Illuminator, this illuminator is for illuminating paper and can adjusting according to the kind of described paper the spectrum colour temperature of illuminator level, light angle and light source; CCD camera system, this CCD camera system is for making a video recording to described paper; Image processing system, this image processing system is electrically connected to described CCD camera system so that by the image information of processing from described CCD camera system; Image contrast system, this image contrast system is electrically connected to described image processing system to image information and standard picture information after described image processing system is processed are contrasted, and the difference between the two is sent defect printing signal while exceeding predetermined threshold value.

Due to paper feeding device, pick-up unit and finished product bunching device etc. are integrated into a machine, and high-performance and high-precision pick-up unit have been adopted, therefore automaticity and detection efficiency that printing detects have not only greatly been improved, reduce the cost that printing detects, and gone for multiple material printing especially such as the high precision of special material printing and the detections of high standardization such as laser paper printings.

In addition, according to printing product detecting equipment of the present invention, also there is following additional technical feature:

Described sheet conveying apparatus is set up to be provided with paper is positioned and/or fixing paper stabilization processes device.

Thus, can make paper more stable when by described pick-up unit, be beneficial to ensure the accuracy detecting.

Described paper stabilization processes device comprises the aligning mechanism that the position of paper is automatically detected and adjusted.

Automatic detection and adjusting mechanism are set, can be in location and/or fixing paper position is revised when inaccurate, further to guarantee the stability of paper when through described CCD camera system.

Described printing product detecting equipment also comprises rejection device, and described rejection device is arranged between described pick-up unit and finished product bunching device and with described pick-up unit and is electrically connected to so that the described defect printing signal removal defect printing of sending according to described pick-up unit.

Thus, automatic rejection defect printing when can realize online detection, has improved the operational efficiency of printing product detecting equipment greatly.

Described rejection device is included in a plurality of delivery units that set gradually on paper direct of travel, wherein spaced apart between adjacent delivery unit; The described defect printing signal sending according to described pick-up unit imports to two separating mechanisms in the defect printing passage between adjacent delivery unit by defect printing; Be arranged in described delivery unit with absorption or discharge the aspirating mechanism of described paper.

Use the operation of this kind of rejection device execution inspection rejects to have simple in structure, the feature of flexible operation.

Described printing product detecting equipment also comprises the waste product bunching device that is arranged on described rejection device defect printing passage downstream.

Thus, in automatic rejection defect printing, also can carry out automatic piling to defect printing, further improve the automaticity of printing product detecting equipment.

Described paper feeding device is for carrying the paper feeding device of different breadth paper.

Like this, the described printing product detecting equipment that has this kind of paper feeding device goes for the detection of multiple breadth printing.

Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:

Fig. 1 is the system architecture schematic diagram of printing product detecting equipment according to an embodiment of the invention;

Fig. 2 is the construction module figure of pick-up unit in Fig. 1;

Fig. 3 is the system architecture schematic diagram of the printing product detecting equipment of another embodiment according to the present invention;

Fig. 4 is the structural representation of rejection device in Fig. 3;

Fig. 5 is the system architecture schematic diagram of the printing product detecting equipment of another embodiment according to the present invention.

Embodiment

Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.

Below with reference to accompanying drawing 1-5, describe in detail according to the printing product detecting equipment of the embodiment of the present invention.

As shown in Figure 1, printing product detecting equipment, comprisespaper feeding device 10,sheet feeding 40, pick-up unit 30 and finishedproduct bunching device 60 according to an embodiment of the invention.

Describedpaper feeding device 10,sheet feeding 40, finishedproduct bunching device 60 on paper direct of travel from upstream side downstream side set gradually into set type and arrange, described pick-up unit 30 is relatively arranged on the top of described sheet feeding 40 up and down to detect the paper passing through on describedsheet feeding 40.

Refer to Fig. 2, described pick-up unit 30 also comprises: illuminator 31, CCD camera system 32, image processing system 33 and image contrast system 34.

Illuminator 31 is for illuminating paper and can adjusting according to the kind of described paper the spectrum colour temperature of illuminator level, light angle and light source; CCD camera system 32 is for making a video recording to described paper; Image processing system 33 is electrically connected to CCD camera system 32 to process the image information from CCD camera system 32; Image contrast system 34 is electrically connected to image processing system 33 to image information and standard picture information after image processing system 33 is processed are contrasted, and the difference between the two is sent defect printing signal while exceeding predetermined threshold value.

In the above-described embodiments, CCD camera system 32 is for having high pixel, horizontal resolution and highly sensitive CCD system, such as, for can be applied to multiple paper especially such as the special substance printings such as laser paper accurately and high speed detection, the pixel of CCD camera system 32 generally should be higher than 250,000, and its horizontal resolution is not less than 400 lines.The time of its electronic shutter is at 1/50-1/100000 between second.Above CCD camera system, can configure according to different testing products different systems, and as art post paperboard product can configure degree of accuracy system on the low side a little, and testing product be take radium-shine material as main, need to configure the system that precision is high.

Therefore, according to printing product detecting equipment of the present invention, due topaper feeding device 10, pick-up unit 30 and finishedproduct bunching device 60 etc. are integrated into a machine, and high-performance and high-precision pick-up unit 30 have been adopted, therefore automaticity and detection efficiency that printing detects have not only greatly been improved, reduce the cost that printing detects, and gone for multiple material printing especially such as the high precision of special material printing and the detections of high standardization such as laser paper printings.

According to an example of the present invention, on describedsheet feeding 40, be provided with paper is positioned and/or fixing paper stabilization processes device.

The product detecting is viapaper feeding device 10, in individual mode, enters sheet feeding 40.First by machinery or pneumatic mode, every paper to be detected is positioned, guarantee that all paper to be detected pass through from CCD camera system with same position.Described paper stabilization processes device can comprise that one or several limiting component positions paper, and comprise can be by paper adsorption to the negative pressure aspirating mechanism (not shown) on the travelling belt ofsheet feeding 40, with avoid paper transmit and testing process in there is any skew and shake.

Thus, can make paper more stable when by described pick-up unit 30, be beneficial to ensure the accuracy detecting.

In addition, according to one embodiment of present invention, described paper stabilization processes device comprises and is arranged on the device for aligning 20 (referring to Fig. 5) that can the position of paper automatically be detected and be adjusted between describedpaper feeding device 10 and pick-up unit 30.This device for aligning 20 can detect automatically to the position of paper, and according to testing result automatically by paper position being revised such as left and right rule device etc.Thus, can be in paper location and/or fixingly paper position is further revised when inaccurate, further to guarantee the stability of paper when through described CCD camera system.Such device for aligning 20 is that appearance is facile for the person of ordinary skill of the art, therefore it will not go into details.

As shown in Figure 3, according to one embodiment of present invention, described printing product detecting equipment also comprises rejection device 50.Describedrejection device 50 is arranged between described pick-up unit 30 and finishedproduct bunching device 60 and with described pick-up unit 30 and is electrically connected to, so that the automatic removal of defects printing of described defect printing signal of sending according to described pick-up unit 30.

As an example of the present invention, as shown in Figure 4, describedrejection device 50 comprises: a plurality ofdelivery units 51 that set gradually on paper direct of travel, and wherein spaced apart betweenadjacent delivery unit 51; The described defect printing signal sending according to described pick-up unit 30 imports to defect printing (being paper)separating mechanism 53 of two defect printing passages betweenadjacent delivery unit 51interior 52; Be arranged in describeddelivery unit 51 so that absorption or discharge the aspirating mechanism (not shown) of described paper.

More specifically, when detecting certain paper Za (or claiming printing Za), pick-up unit 30 do not meet standard and requirement, be defect printing, torejection device 50, send flaw indication, therebyrejection device 50 is removed the paper Za2 of defect from paper transfer 51.And being transported to finishedproduct bunching device 60 fromrejection device 50, collects and stacking qualified printing Za1.

Figure 4 illustrates threedelivery units 51, for example travelling belts.It is middle withintermediate transport unit 51 thatseparating mechanism 53 is for example arranged on leftside delivery unit 51, and be electrically connected to pick-upunit 30, thereby separatingmechanism 53 imports to defective printing Za2 in twodefect printing passages 52 betweendelivery unit 51 according to the detection signal of pick-up unit 30 (defect printing signal).Qualified printing Za1 is transported to finishedproduct bunching device 60 and collects stacking.Described aspirating mechanism is arranged indelivery unit 51, in order to individual printing Za is adsorbed onto ondelivery unit 51.

Separating mechanism 52 can be for example Pneumatic manipulator, and when receiving defect printing signal, Pneumatic manipulator can press down, thereby defect printing Za2 is pressed onto in thedefect printing passage 52 betweendelivery unit 51.

Rejection device 50 is not limited to above-described example.For example,rejection device 50 also can not arrange separating mechanism, but leaning device (not shown) is set, and for thedelivery unit 51 in the middle of making, tilts.When receiving defect printing signal, described leaning devicetilts delivery unit 51, and aspirating mechanism stops suction simultaneously, and defect printing Za2 is slipped indefect printing passage 52 automatically.

Those of ordinary skill in the art also can use known anysuitable rejection device 50 that defect printing is removed, and the present invention has no particular limits this.

As mentioned above, qualified printing Za1 collects and stacking by arriving finishedproduct bunching device 60 from rejection device 5, and finishedproduct collection device 60 can be any suitable type known in the art, is not described in detail here.

In the above-described embodiments, the waste product bunching device 70 that also comprisesdefect printing passage 52 downstreams that are arranged on described rejection device 50.Thus, can carry out automatic piling to the waste product of rejecting, further improve the automaticity of whole equipment.Waste product bunching device 70 can be also any suitable type known in the art.

In addition, describedpaper feeding device 10 is to carry by adjusting the paper feeding device of different breadth paper.Such paper feeding device can be selected from prior art, and this does not repeat.

In addition, thispaper feeding device 10 can also walk abreast and arrange two or many, forming binary channels or multi-channel synchronous detects, realize the object of faster production, certainly, other device is as device for aligning 20,sheet feeding 40, pick-upunit 30, finishedproduct bunching device 60,rejection device 50 and finishedproduct bunching device 60 and waste product bunching device 70 etc., and its structure and running parameter should correspondingly be adjusted in the case, to match with twopaper feeding devices 10.

Below with reference to Fig. 4 and Fig. 5, simply describe according to the operation of the printing product detecting equipment of the embodiment of the present invention.

The kind of the current batch of printing detecting as required and breadth described printing product detecting equipment is debugged ready after, start described printing product detecting equipment:

Paper feeding device 10 sends individual paper Za to device for aligning 20;

After proofreading and correct by the position of 20 couples of paper Za of device for aligning, then send sheet feeding 40 to;

After being fixed (as adsorbed by negative pressure aspirating mechanism) to 40 pairs of paper of sheet feeding, continue operation forward, paper Za passes through under described pick-up unit 30, and meanwhile 32 couples of paper Za of CCD camera system of pick-up unit 30 take a picture and produce corresponding picture signal;

Then, the image information that 33 pairs of CCD camera systems 32 of image processing system are sent is processed (such as above some do not need the image information of contrast such as the filterings such as background decorative pattern that specially generate on paper by paper Za);

The image information after treatment that image contrast system 34 sends image processing system 33 compares with the standard picture information storing in advance:

If image information is consistent with standard picture information, corresponding printing Za is qualified printing Za1, and the finishedproduct bunching device 60 that is transported to downstream is collected and stacking;

If image information and standard picture information are inconsistent, for example error surpasses certain threshold value, and image processing system 33 is judged to be defect printing Za2 by corresponding printing Za, sends defect printing signal torejection device 50 simultaneously;

Rejection device 50 is removed corresponding printing Za2 according to defect printing signal, and the waste product bunching device 70 that is transported to downstream is collected and stacking.

Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment without departing from the principles and spirit of the present invention, scope of the present invention is limited by claim and equivalent thereof.

Claims (5)

1. a printing product detecting equipment, is characterized in that, comprising:

Paper feeding device, sheet feeding, pick-up unit, finished product bunching device, wherein said paper feeding device, sheet feeding, finished product bunching device on paper direct of travel from upstream side downstream side set gradually into set type and arrange, described pick-up unit and described sheet feeding are oppositely arranged to detect described sheet conveying apparatus and are set up the paper passing through, and described pick-up unit further comprises:

Illuminator, this illuminator is for illuminating paper and can adjusting according to the kind of described paper the spectrum colour temperature of illuminator level, light angle and light source; CCD camera system, this CCD camera system is for making a video recording to described paper; Image processing system, this image processing system is electrically connected to process the image information from described CCD camera system with described CCD camera system; Image contrast system, this image contrast system is electrically connected to described image processing system to image information and standard picture information after described image processing system is processed are contrasted, and when exceeding predetermined threshold value, the difference between the two sends defect printing signal

Wherein, described sheet conveying apparatus is set up to be provided with paper is positioned and/or fixing paper stabilization processes device, and described paper stabilization processes device can comprise that one or several limiting component positions paper,

Also comprise rejection device, described rejection device comprises: a plurality of delivery units that set gradually on paper direct of travel, and wherein spaced apart between adjacent delivery unit; The described defect printing signal sending according to described pick-up unit imports to two separating mechanisms in the defect printing passage between adjacent delivery unit by defect printing; Be arranged in described delivery unit so that absorption or discharge the aspirating mechanism of described paper.

2. printing product detecting equipment as claimed in claim 1, is characterized in that, described paper stabilization processes device comprises the aligning mechanism that the position of paper is automatically detected and adjusted.

3. printing product detecting equipment as claimed in claim 1, it is characterized in that, described rejection device is arranged between described pick-up unit and finished product bunching device, and is electrically connected to described pick-up unit, so that the described defect printing signal removal defect printing of sending according to described pick-up unit.

4. printing product detecting equipment as claimed in claim 1, is characterized in that, also comprises the waste product bunching device that is arranged on described rejection device defect printing passage downstream.

5. printing product detecting equipment as claimed in claim 1, is characterized in that, described paper feeding device is for carrying the paper feeding device of different breadth paper.

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