CN1643211A - Method and system for maintaining runnability in a paper or board machine - Google Patents

Abstract

The invention concerns a method and system for maintaining runnability in a paper or board machine, which machine for making paper or board includes two or more successive section complexes, such as a web formation section (10), a press section (11), a drying section (12) and a finishing device (13), and wherein at the section complex (10 - 13) (i) cleaning measures are carried out, (ii) the cleanness level is checked, (iii) if the cleanness level does not meet the criteria established for it, the procedure continues from step (i), otherwise, (iv) the cleanness level is accepted. Checking of the cleanness level is performed by using computer vision and the observations obtained by computer vision are compared with a criterion value established to correspond with the required cleanness level, and based on this value the procedure either continues with cleaning measures (i) or the cleanness level is accepted (iv).

Description

Keep the method and system of paper or board machine service ability

The present invention relates to a kind of method of keeping paper or board machine service ability, wherein, the machine of this papermaking or cardboard comprises two or more continuous parts, as paper sheet formation portion, press section, drying section and ornamenting device, and the operation below wherein the disconnected paper of contact carries out on each part:

(i) carry out clean operation,

(ii) check clean level,

If (iii) clean level does not reach the standard of being set up, just continuous execution in step (i), otherwise,

(iv) just accept this clean level,

In addition, the invention still further relates to corresponding system.

At present, the speed of service of paper and board machine (hereinafter with the paper machine as common name) be it seems from the viewpoint of paper web management, has increased and becomes higher.The service ability of paper machine has been taken on important role in the output of machine.Although used a lot of diverse ways to improve service ability, disconnected paper always takes place in paper machine frequently.

Relate to disconnected paper position and restart production, often require such as cleaning measurement at disconnected paper point.Also can when carrying out, production carry out cleaning to the part of using.At the part that disconnected paper takes place and in machine part subsequently, after cleaning, carry out afterbody wet web pickup program.Positions of disconnected paper take place easily in other, the perhaps position of also having carried out described afterbody wet web pickup program usually, and such as startup after shutdown, also variation grades as far as possible.

The green end of the critical localisation of disconnected paper at machine takes place in this class, such as at press section.In addition, disconnected paper situation occurs in drying section, coating station (first and second coating stations) equally, if used these drying sections, coating station, and can occur in the reel machine part, particularly during the reel cylinder conversion.The actual time that disconnected paper state takes place can be wasted in seek that disconnected paper takes place definitely in the localities.The unclear disconnected paper of this class place can be positioned at, such as the borderline region between press section and the drying section, and also may be at the borderline region between breaker stack and the coating station.

The improvement of afterbody wet web pickup and relevant device is convenient to clean during disconnected paper and the improvement of the reliability of disconnected paper watch-dog, all is some factors, in addition to these, has all served as the key player in the time reducing disconnected paper.

In the prior art, afterbody wet web pickup program now both can be whole by manually finishing, and also can carry out this measurement by machine operation person as under the help of blowing.In addition, various selvage guide bands or terminal conveyer, device for disc and pulley gear can be used on the afterbody wet web pickup.Paper machine operation person also is that main attention is from the people such as console control and adjusting.

Startup of producing in the prior art and the program implementation of afterbody wet web pickup wherein require equipment adjusting and process conditions to change to the level that can successfully carry out afterbody wet web pickup or production as a step.Adjusting under consideration and changing also by manual, exception not almost is with the switch on the console by machine operation person.

Particularly relate to disconnected paper position, need on the paper machine, clean, so that remove the machine broke that causes from disconnected paper.Now, machine operation person manually cleans.According to cleaning on part or to location point, this will do, such as by blow air or the washing clean, wherein broken is just removed from machine construction.The operator provides the air that blows and directly air is blown on the object that is cleaned, and such as blowing with flexible pipe, moves to quite difficulty even quite danger on the paper machine limit in the paper machine operation.

During cleaning, the paper machine be moved element, for example roller and cylinder normally keep rotation, too postpone the startup of producing because stop their rotation meeting fully.Therefore just dangerous, such as, may lose its balance the people who does the cleaning measurement, and must be near rotating element.The result is normally fatal in both of these case.Therefore serious danger just occurs near this cleaning near the element that is moving, and owing to this reason has just been decided strict security regulations to this work, but this regulation is difficult to observe, particularly in the situation of present method of work.

In addition,, also have various beam structures except cleaning these structures at machine room, such as on base lever along with the time can be piled up paper scrap, also need the cleaning.These structures on base lever also are difficult to clean.Concentrate at the scraps of paper on the crossbeam even can form disaster hidden-trouble.In addition, when the scraps of paper are carried by air-flow, also can the time in the path of web area and cause paper break at this place.

Although operating routine may paper machine operation person all obtain, in afterbody wet web pickup program, always there is the danger of human error in several years maintenance intervals.When this danger occurs in the operator and diverts one's attention such as meeting, even diverting one's attention of a moment just.In addition, manual afterbody wet web pickup program, in operator's repetitive operation many times, become the routine operation of instinctization, the situation because of operator's habitual non-optimum mode of operation TIME AFTER TIME still can take place, and the operator has used a lot of years because of artificial experience.At present, although the control system for paper machine programming reaches very high level, visit work person and must know several machine run parameters, particularly in the afterbody wet web pickup stage, relate to its process, he also must make decision and regulate them so that can successfully carry out afterbody wet web pickup program.

The purpose of this invention is to provide a kind of method of keeping paper or board machine service ability.Feature of the present invention according to claim 1.The present invention also relates to a kind of corresponding system, its feature is as described in the claim 13.

According to method and system of the present invention, the clean conditions of machine is monitored by computer vision.Machine just obtains than present method of work more effective, safer and more rational cleaning like this, in fact.Particularly, can be applied to disconnected paper position according to method and system of the present invention.

And, according to one embodiment of the present of invention, in method of the present invention, can carry out in selected part, perhaps or even in the whole operation that relates to the management of the service ability of keeping machine and paper web carry out, such as, relate to the step of the startup of cleaning, afterbody wet web pickup program and production, operate automatically by control system of machine with the progress of producing in the mode that is independent of the operator.

Computer vision technique is employed in the method for the invention.In addition, whether other discriminatings of characteristic value and paper web are detected the conversion of the machine of paper web measuring system, and definite wet web pickup tail feature is so that can successfully start production.

According to method and system of the present invention also even be applied in the common clean operation of each step of paper machine.The clean level of machine construction and element, even can be surveyed from the inside of structure from several different directions and the position sensing determined by the detecting element that is disposed.This can verify and determine the clean level in zone, is critical to the machine construction and the fracture of complexity.

According to an embodiment, the measurement that relates to cleaning can become whole with the control system of machine, also can become whole with the startup of producing and place.Use artificial intelligence in the control system, thereby be set to alleged " learning system ".The observation of same clean level, cleaning and afterbody wet web pickup, also formation information come the executive condition monitoring.Information is switched to specific remote monitor function then and analyzes and the diagnosis problem position.

Improved the level of security of paper machine significantly according to method and system of the present invention, and carried out the safety measure set up so that guarantee Machine Operator's industry security.In addition, the output of machine with respect to known to output significantly improve.Can measure and start afterbody wet web pickup program with the control system of machine automated cleaning at selected portion, the afterbody wet web pickup of perhaps whole removing failure and because Machine Operator's human error, work inertia and carry out the production loss that afterbody wet web pickup program causes in any disadvantageous mode.Other advantages that obtain according to method and system of the present invention can embody in the specification part, and those features can embody in appended claims.

In conjunction with the accompanying drawings and according to following description, be not restricted to the following examples, will become more obvious according to method and system of the present invention.

Fig. 1 is the schematic diagram of the paper machine of example,

Fig. 2 is the press section example according to paper machine of the present invention,

Fig. 3 is the drying section example according to paper machine of the present invention,

Fig. 4 a is according to the drying section of paper machine of the present invention and the example in the zone between the reel machine,

The view that Fig. 4 b sees from the top for Fig. 4 a,

Fig. 5 a is a schematic diagram of seeing the cleaning device that is used for paper machine beam structure from the side,

Fig. 5 b is the cross sectional representation of Fig. 5 a,

Fig. 6 a is for to see that another is used for the schematic diagram of the cleaning device of paper machine beam structure from the side,

Fig. 6 b is the cross sectional representation of Fig. 6 a,

Fig. 7 is the flow chart according to the inventive method.

Fig. 1 has summarized a paper machine roughly.This paper machine is formed by each part, and promptly Web-forming section 10, press section 11, multistep drying section 12 and ornamenting device 13.In institute's example paper machine, this ornamenting device is a reel machine 13.This ornamenting device 13 also can be an apparatus for coating, a calender or top several combination (as, press polish-reel machine).

Can advantageously be applied to according to method and system of the present invention on each part of paper machine.In addition, at each part, this method also can be used on several different breakpoints.Below, be described according to the situation of method of the present invention below will getting in touch, at first be the startup press section of when disconnected paper takes place press section 11, carrying out, and start drying section 12 and curling paper web subsequently to reel machine 13.Should be noted that keeping service ability according to method and system of the present invention never is restricted, such as, can use under any disconnected paper situation, also can be used in each suitable part of ongoing production.

Figure 2 shows that the press section of paper machine.In the production run of paper machine, may occur in press section such as tangling the disconnected paper that causes by paper web 32 and central roller 17.When disconnected paper state, paper web 32 tail ends can directly run to reel machine 13 or also possible be, after for the first time disconnected paper appropriate location, it can be broken into a part or more part in the 11-13 part of the part of paper machine next.Therefore, shredded paper can take place at the part diverse location, and this can cause such as carrying out difficulty at ensuing tail paper wet web pickup, perhaps causes other harmful effects.

According to the preferred embodiment, can utilize the paper machine to measure or sensor system detection breakpoint and the close clear point that breakpoint takes place.Whether be used in the breakpoint of seeking press section 11 and be placed on sensor first example in the machine, can survey this place under the help of photoelectric tube 21.1,21.2 has paper web 32.Photoelectric tube 21.1,21.2 can be arranged on each position of press section 11, and the portion that normally is arranged on machine with part 10-13 on.But some uncertain factor can relate to the detection based on photoelectric tube 21.1,21.2.Such as, in this case, loose a scrap of paper is assembled the zone of surveying, and there is paper web 32 in it may for the signal indication that makes mistake.

In another preferred embodiment, whether paper web is arranged, judge, available (super eye (PosiEye)) based on the reverberation that shines on the paper web 32 for surveying.When paper web 32, can be by the light of a certain intensity of sensor 21.3 reflections.The light intensity that reflects from paper web 32 is more a lot of than the light intensity height of being accepted by sensor 21.3 under the situation that does not have paper web 32 from machine construction or online reflection.

According to the 3rd preferred embodiment, may detect as tension value at different measuring position paper web 32.One is exemplified as this metrical information or tonometry, and (Fig. 1 and Fig. 4 a) conduct the measurement mechanism 23 of the cross-sectional profiles by the paper web 32 in the zone 25 between drying section 12 and reel machine 13.At tonometry point or the point subsequently of this class after measuring the point of interruption, for example under the web breaks situation, detect web tension and sharply descend.Tonometry point before breakpoint, also may detect the tension force kept or in machine direction because the tension value of the rapid reduction of breakpoint.Other sniffer or measured value also can be used to determine whether paper web 32, and location break point more accurately.

Select to survey or the variation of measurement mechanism report by having, the paper web of machine automatically monitoring comprises that web breaks takes place, locatees this fracture and occur in certain part 10-13, and wherein enumerates this fracture according to this measurement mechanism or sensor column in certain composition portion within interval.

When fracture occurred in press section 11, pinch roll 19 can upwards lift, and the paper web 32 that comes from wet end 10 operations just is guided into the pulper (not shown) from the border of wet end 10 and press section 11.The signal of indication breaking state just is delivered to the cleaning systems that are positioned at press section 11 zones, and these cleaning systems comprise one or more cleaning injectors 31.1,31.2 that specially are provided with.These cleaning devices are used for carrying out cleaning, so that to afterbody-wet web pickup step (i, Fig. 7) cleaning part 11.These cleaning devices can be after detecting fracture, and perhaps the independent startup command that provides according to the operator begins cleaning automatically.

Simultaneously, with one or more sniffers that specially are provided with, can be the optical photography device, for example be positioned at the digital camera 30.1,30.2 of press section 11, begin photography (ii) at the common position or the location region of fracture of part 11.Camera 30.1,30.2 is set to as requested at the different part 10-13 of machine, makes it that zone of the information of enough wide regions, particularly easy fracture can be provided, but does not comprise other zone.In addition, camera 30.1,30.2 can not hard-wired mode be provided with, and can be provided with on the framework across machine direction, makes them to cross, and perhaps makes them can rotate without restriction on its supporter (not shown).

According to the embodiment of institute's example, the visual information that is provided by camera 30.1,30.2 is digitized in known manner, so visual information just is converted (unless being converted) for the tonal gradation pattern, wherein, gray value is just by calibration, such as, be divided into 256 parts.Threshold value is set to gray value, thereby scale value that is to say that under threshold value relatively the zone of light just be defined as paper or other foreign material parts, and darker zone just is defined as machine construction.Alleged null graph picture just is stored and is the cleaning machine structure in each camera positions, and the null graph picture just represents not have paper web loss or other these class foreign material.Just compared by the digitized grey scale image of camera 30.1,30.2 conversions, just distinguished according to the clean-up performance level of these data parts 11 then, that is to say, need the position of cleaning just to be drawn with these null graph pictures.

In its simplest form, according to the environment of machine construction shortage light appearance and camera positions, the visual information of fracture position can fully be changed rather than alleged null graph pictures by camera 30.1,30.2.Explain that otherwise visual information and the cognitive pattern of quilt also are fine usually naturally.This class shows variation or represents gray tone with limit value usually in consecutive image.

According to method and system of the present invention, the cleaning device of press section 11 is to be formed by different water and air injector 31.1,31.2.Injector 31.1,31.2 is positioned at known zone, and they are regarded as breakaway poing, and they can clean that target moves and accurate cleaning target with respect to it.According to a preferred embodiment, the injector the 31.1, the 31.2nd of cleaning systems, orientation are connected to camera system 30.1,30.2 or the system common and information of generation sets in a row, thereby the injector that sets in a row 31.1,31.2 can be arranged on across machine direction based on the position of camera 30.1,30.2, and they can produce camera angle or its common visual information.Camera 30.1,30.2 and injector 31.1,31.2 are all remote-controlled.

Carry out cleaning measure after (i), the clean level that camera system just is used for detecting part 11 is (ii).Do not reach at clean level under the situation of standard of its foundation (iii), proceed cleaning and measure, for example, injector 31.1,31.2 with regard to change location and direction to reach needed cleaning result (i).Its standard can be the light appearance of part above-mentioned and the analysis result of gray tone.

(iv), the paper web management system just provides the afterbody wet web pickup program (v-vii) that order begins paper web 32 when the clean level of part 11 can be accepted.Like this, acceptable clean level (iv) just triggers afterbody wet web pickup program and begins to start.Can be by control system of machine 50 in mode in fact automatically, or selectively provide order separately by the operating staff, carry out this triggering.(i, v vi) can be by providing (Fig. 3) with the long-range connection 52 that is connected with control system 50 between machine control for cleaning and afterbody wet web pickup startup command.In addition, clean level inspection (ii) also can be carried out by remote control 52.Therefore the pinch roll 19 of press section 11 just is attached on the breast roll 17 with regard to reduction and paper web 32, and perhaps, according to Machine Type, paper web 32 also can directly direct into first drying cylinder 12.1 of drying section 12.

Simultaneously, measure (i-iv) according to the cleaning of the inventive method and carry out at press section 11, the afterbody wet web pickup of also carrying out is subsequently measured (v-vii), and drying section 12 and ornamenting device 12 subsequently also are preferably afterbody wet web pickup program and prepare.Drying section 12 and ornamenting cleaning have partly been carried out at camera and the cleaning device having a mind to accordingly be arranged on the press section 11, that is to say, in this example, reel machine 13, and the clean level of part 12,13 is checked through, and can find the needed level of afterbody wet web pickup program that hits pay dirk.

Figure 3 shows that one of drying section 12 dry group 12` shows according to method of the present invention.Monitoring sensor 21.4,21.5 is surveyed the whether drying section 12 between vacuum furnace 18 of paper webs, and this sensor also is based on light reflected intensity (super eye), measures according to the principle shown in top.And drying section 12 comprises, but the camera 30.3,30.4 of removable and hit below machine construction for example, and cleaning injector 31.3, this injector is the air ejector 31.3 enough far away that drying section 12 can relate to.Air ejector 31.3 is so arranged, and makes it air can be blown into the part of the loose paper web loss of substrate, and can be scraped from drying cylinder 16 by scraper 37.In the position of using, survey and cleaning device also can be between machine construction, and they also can be moved, such as being moved by the tension arm equipment.Crossbeam 60 just is arranged on an example of the installation between the machine construction.

When camera 30.1,30.2 and paper web identifier 21.1,21.2 transitional informations are that paper web 32 results are good and when being on the press section 11,12 afterbody wet web pickup program just can automatically perform or be performed by independent order from press section 11 to drying section.Speed difference between press section 11 and the drying section 12 can be regulated by suitable bar, and the wet web pickup afterbody portion 12 that is dried is used for the inclined to one side hand papercutter of afterbody wet web pickup and cuts off (not shown).The condition of drying section 12 is to be controlled as being suitable for afterbody 39 wet web pickups and production (V).Therefore the temperature of the drying cylinder 16 in other objects is adjustable.This preparation process can receptible clean level (iv) or even the part work of cleaning during measuring (i-iii) after carry out.

In the end of press section 11, when the tension force of wet web pickup afterbody is found to be in a suitable afterbody wet web pickup level, just guide the wet web pickup afterbody to drying section 12 with known manner.The afterbody wet web pickup program of drying section 12 just is performed (vi-vii) in known this mode.

Camera 30.3,30.4 and other paper web watch-dogs 21.4,21.5 are used to survey the successful afterbody wet web pickup at drying section 12, normally (vi) realize with a step in present machine.When wet web pickup afterbody 39 has successfully been directed into the end of drying section 12, paper web 32 just can be deployed into its whole width range (vii) automatically by the borderline inclined to one side paper cutter (not shown) that is arranged on press section 11 and drying section 12.If paper web ruptures at drying section 12, paper web 32 is just from breakpoint, or directs into the bottom from the previous boundary point of drying group, and further directs into the pulper (not shown).

Fig. 4 a is depicted as the zone line 25 between drying section 12 and the reel machine 13.This zone line 25 also comprises camera 30.5-30.7, and they also specially are provided with and provide in this zone enough transitional informations of clean level.Except shown example, camera also can be arranged on the side of structure, the centre of their following or even structure.These cleaning injectors 31.4,31.5 can be arranged so that also it can produce needed cleaning result's mode.

When paper web 32 has been deployed on the end of drying section 12 with whole width with good result, and one or more repetitive cycling (i-iii) afterwards the clean level of zone line 25 and reel machine 13 all be during in acceptable level, the wet web pickup afterbody cuts off to carry out the afterbody wet web pickup at reel machine 13 places.The wet web pickup afterbody is preferably carried out cut paper as two hand papercutters 14 partially in the middle of paper web 32.Hand papercutter 14 is resisted against on last vacuum furnace 18, makes its injector to cut off the wet web pickup afterbody with respect to dry net, and vacuum furnace is positioned at its below.

After cut paper, wet web pickup afterbody 39 just be directed between drying section 12 and the reel machine 13 zone line 25 (vi).At this zone line 25, the paper web 32 of wet web pickup afterbody 39 and back just especially is guided 22,24,27,28 supports of roller.The afterbody wet sheet taker is guided with vacuum, air blowing or its combination.Be to be all to be that open interval mode is arranged on the zone line 25 between drying section 12 and the reel machine 13 in the notion shown in the example with six based on the afterbody guiding device 33.1-33.6 (Fu Saier paper tinsel (FoilForcel)) of vacuum.Also can cut off and afterbody wet web pickup technology with the wet web pickup afterbody of other modes.Reference numerals 26 refers to steam chest, and the cross section that is used for controlling the side of paper web 32 has good humidity.

Fig. 4 b is depicted as the information that forms image by camera 30.5-30.7 conversion, and has shown the zone line 25 between drying section 12 and reel machine 13, the view that it is seen from the top corresponding to the notion shown in Fig. 4 a.Paper web 32 is that mode (zone of oblique line) with the below is expanded to from wet web pickup afterbody 39 by device 14 and produces width (vii) in the drawings.Usually, spread step automatically performs.There is shown an example, the clean level in zone 25 can be detected, and carries out cleaning based on this by injector 31.4,31.5 and measure.Anyly adhere to structural page fragment and can both see on the image that is become with wet web pickup afterbody 39 present shown modes to be similar to paper web 32.

The transposing of reel cylinder on reel machine 13, speed setting different and distribute at afterbody wet web pickup and paper web also can be controlled automatically by the control system of machine.

When reel machine 13 has also been carried out above-mentioned preliminary surveying, just begin wet web pickups to reel machine 13 from drying section 12.The good results of afterbody wet web pickup program just detects under the help of the camera system that computer vision/in this way specially is provided with.The tension force of the wet web pickup afterbody 39 that the result is good, such as by the tensile measurer on the zone that is arranged between drying section 12 and the reel machine 13 (as IQ-tension force) or based on the measuring instrument (these are not shown) of weight recognition, and humidity is distinguished by temperature measuring set 15.The tension value of wet web pickup afterbody 39 and temperature survey 15, its humidity level with the wet web pickup afterbody is relevant, can standard conditions be set to paper web 32 and automatically spread to whole width.

When paper web expanded to reel machine 13 following-get the paper point, passes through to coiling machine 13 and can be provided with automatically continuously, and the paper web 32 on the whole width just is blown on the empty reel cylinder 34 with the progress of producing.Paper machine just is in the production run state (viii) after this.

More examples as the position that is difficult to be cleaned are that static beam structure 54 need be mentioned, and it is arranged in the substrate 53 of machine.These can cover from the edge of keeping side 57 of machine to the whole interval or the part at the edge of fore side.This is real, and this class beam structure 54 also can be arranged on other places that connect machine, and is not only on base lever 53.

Fig. 5 a-6b has shown two kinds of different embodiment that keep these class beam structure 54 cleanings.In the embodiment shown in Fig. 5 a and the 5b, a longeron 55 is arranged on the top of crossbeam 55, and this longeron comprises channel rail configuration.In channel rail 61, be provided with one or more scrapers 56, or other these base parts move back and forth back and forth across direction at machine and cut off, and from top crossbeam 55 the paper fragments of collection on longeron 55 are removed usually.If the situation of a plurality of scrapers 56 is arranged, scraper will be such as moving on longeron 55 across.

Longeron 55 can be circular a little at its edge in the scraper side preferably, makes the scraps of paper cut off or falls into substrate by scraper 54 choppings and collect in the room 53 and become easier.Guiding crossbeam 55 can be light relatively structure, and the suitable electric motor that drives scraper 56 can be carried out clean operation smoothly with suitable small-power.

Fig. 6 a and 6b show a more embodiment who keeps beam structure 54 cleanings.Here this beam structure 54 by a wired connection 58 around, wired connection is passed on the bending roll 59 that is arranged on 54 two sides of crossbeam, thus in the bending roll one is set to be driven.Although bending roll 59 is arranged on the above and below of crossbeam 54 in this embodiment, they also can otherwise be provided with naturally, rely on the gabarit of crossbeam 54 such as part.Be collected in that paper fragment on the wired connection 58 just is removed and the operating ratio by wired connection 58 as back and forth back and forth operation further fall on the base lever 53.The use of cleaning equipment can be connected on the control system 50 of machine by data transmission bus (bus), and can move automatically, such as moving automatically in rule mode at interval.Also appliance computer visual techniques in this case.

As shown in Figure 3, but according to the preferred embodiment also artificial intelligence be connected to the whole cleaning systems that are connected of control system of machine 50 on, thereby become so-called " learning system ".Therefore, except automatic system can be noticed problematic zone, it also can register and store the new problem points that occurs in disconnected paper position, and the frequency that problem takes place here, and it also can take into account disconnected paper position subsequently.For example these problem points of example are difficult to afterbody wet web pickup and cleaning.These information can be used to the disconnected paper point of searching and direct cleaning accurately is ejected on these problem points of knowing.

According to method of the present invention also can advantageous applications at condition monitoring in advance with keep.In condition monitoring in advance, the result that information can be obtained by the detection to machine forms, and this information is switched on the specific remote server 52 by data transport network 51.It is functional being connected to remote server 52, and it analyzes the information that is received by selecteed standard.This class standard for example can be the various time responses of cleaning the result and relating to cleaning and/or afterbody wet web pickup function or step.If attempt the afterbody wet web pickup the duration or the position of disconnected usually paper surpassed the time limit value of being set up, machine will provide alarm in advance, may be up to the flicker stage, perhaps when have problems state and the operator of machine do not know.This function also further comprises specific diagnosis part, and it diagnoses the reason of generation problem from the information that receives.

In addition, in this alarm state, service groups can be sent to machine and send possible accessory to machine so that problem that takes place or the problem that has existed are correctly handled.Machine operation person also can obtain the problem notice and provide the indication of handling problem.In addition, based on the remote adjustment equipment of information also can, it can comprise such as directly surveying and cleaning equipment, and operating path changes and usually, such as, regulate the equipment that influence the afterbody wet web pickup or or even startup and carry out actual afterbody wet web pickup program.

Part 10-13 also can be shone by ultraviolet light in the clean level inspection with during seeking and visiting at least.This makes that distinguishing a scrap of paper from machine construction becomes easily, because this makes grade " luminous " (not shown) of a lot of paper on certain meaning.

According to method essence of the present invention is to utilize computer vision to carry out the operation of clean operation, clean level inspection and acceptable clean level.Starting cleaning procedure and afterbody wet web pickup program subsequently can automatically perform, and perhaps, selectively, can be started by the operator.The position that should be noted that camera shown in the figure and injector only is to illustrate roughly and give out example.Must understand that foregoing description and the accompanying drawing that relates to description all only are in order to illustrate according to method of the present invention.Therefore the present invention is not limited by the embodiment of top example or following claim, be construed as and can carry out various changes and modifications according to the present invention to those of ordinary skills, they all fall within the spirit of the present invention that following claim scope limited.

Claims (15)

1, a kind of method of keeping paper machine or board machine service ability, this machine that is used for papermaking or cardboard comprises the part that two or more are continuous, as net forming section (10), press section (11), drying section (12) and ornamenting device (13), and in each part (10-13)

(i) carry out clean operation,

(ii) check clean level,

If (iii) clean level does not reach the standard of being set up, just continuous execution in step (i), otherwise,

(iv) just accept clean level,

It is characterized in that, the inspection clean level is carried out by computer vision, and wherein the standard value that is provided with the clean level that needs accordingly of the observed result that is obtained by computer vision compares, and based on this value or proceed clean operation (i) program or accept this clean level (iv).

2, method according to claim 1 is characterized in that, relevant with fracture during the cleaning (i-iv) or the step of acceptable clean level (iv) after, the operation below on part (10-13), carrying out:

(v) to afterbody (39) wet web pickup or produce and set up advantageous conditions, and after the acceptable step of clean level, (iv) carry out,

(vi) this wet web pickup afterbody (39) is to directing into one or more steps, and

(vii) this wet web pickup afterbody (39) just launches to form paper web (32) on its whole width.

3, method according to claim 1 and 2 is characterized in that, this part (10-13) comprises one or more fixing and/or detecting elements movably, as, camera (30.1-30.7).

4, as arbitrary described method among the claim 1-3, it is characterized in that, this part (10-13) comprise fixing and/or movably cleaning element (31.1-31.5,56,58,59) carry out clean operation.

5, as arbitrary described method among the claim 1-4, it is characterized in that, carry out clean operation and/or clean level inspection and/or start afterbody wet web pickup step that (i, ii and/or are iv) carried out by distant control function.

6, according to the described method of claim 2-5, it is characterized in that, be used in during fracture surveys based on the measurement (23) of the definition of web tension.

7, as the described method of claim 2-6, it is characterized in that, with optical detector (21.1-21.5) detection of rupturing.

As the arbitrary described method of claim 1-7, it is characterized in that 8, the targeting information of detecting element (30.1-30.7) is used for hitting the target that is cleaned in the targeting of cleaning element (31.1-31.5).

As the arbitrary described method of claim 1-8, it is characterized in that 9, in each part (10-13), (measurement vi) (i-v) is almost carried out simultaneously to the wet web pickup of afterbody (39) in advance.

As the arbitrary described method of claim 1-9, it is characterized in that 10, the control system of machine (50) is set to learning system, its storage information in cleaning and/or afterbody wet web pickup incident and with these information in accordingly new incident.

As the arbitrary described method of claim 1-10, it is characterized in that 11, this part (10-13) is shone by ultraviolet light during clean level inspection (ii).

12, as the arbitrary described method of claim 1-11, it is characterized in that, observe and the information that forms comes executing state monitoring, this information to be converted into specific remote monitor function (52) to be used for analyzing by this cleaning (i-iv) and/or afterbody wet web pickup step (v-vii).

13, a kind of paper machine or board machine are kept the system of service ability, this machine that is used for papermaking or cardboard comprises the part that two or more are continuous, as net forming section (10), press section (11), drying section (12) and ornamenting device (13), wherein (10-13) assembled the element that is used to keep service ability in each part, it is characterized in that, described element comprises one or more detecting elements (30.1-30.7), it is provided with the clean level of monitoring this part (10-13), with the observed result that obtains by detecting element (30.1-30.7) and the comparison of standard value, it is set at corresponding to needed clean level, and is accepted or is rejected based on this this clean level.

14, system as claimed in claim 13 is characterized in that, this element also comprises cleaning element (31.1-31.5,56,58,59).

As claim 13 or 14 described systems, it is characterized in that 15, this detecting element (30.1-30.7) is set to control this cleaning element (31.1-31.5,56,58,59).

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