CN106988149A - Produce the device of the bundle redistribution in the method and control pulp dryer of pulp bundle - Google Patents
Produce the device of the bundle redistribution in the method and control pulp dryer of pulp bundle Download PDFInfo
- Publication number
- CN106988149A CN106988149A CN201611216143.1A CN201611216143A CN106988149A CN 106988149 A CN106988149 A CN 106988149A CN 201611216143 A CN201611216143 A CN 201611216143A CN 106988149 A CN106988149 A CN 106988149A
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- Prior art keywords
- bundle
- web
- pulp
- weight
- edge
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/18—Drying webs by hot air
- D21F5/185—Supporting webs in hot air dryers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/18—Cutting work characterised by the nature of the cut made; Apparatus therefor to obtain cubes or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/27—Means for performing other operations combined with cutting
- B26D7/30—Means for performing other operations combined with cutting for weighing cut product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
- B65B27/08—Bundling paper sheets, envelopes, bags, newspapers, or other thin flat articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/08—Regulating consistency
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/34—Construction or arrangement of spraying pipes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/006—Cutting the edges of the paper-web
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
- D21G9/0027—Paper-making control systems controlling the forming section
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
- D21G9/0036—Paper-making control systems controlling the press or drying section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
- F26B13/104—Supporting materials without tension, e.g. on or between foraminous belts supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/421—Forming a pile
- B65H2301/4217—Forming multiple piles
- B65H2301/42172—Forming multiple piles simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/10—Mass, e.g. mass flow rate; Weight; Inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/18—Form of handled article or web
- B65H2701/182—Piled package
- B65H2701/1822—Juxtaposed stacks
Abstract
The present invention relates to by forming (12) pulp web (W), the pulp web (14,16) of dry forming, pulp web is cut with cutting (18) into sheet material and forming multiple parallel bundles (1 6) of paper pulp sheet material the method that produces pulp bundle (1 6).Before cutting web, the base weight of on-line measurement (28) web, it is determined that the calculated weight of bundle, and the bundle for each formation of being weighed in scale (30), and weigh to correct calculated weight by the scale of bundle, it is thus determined that the correcting weight of bundle, and the correcting weight value tied is for controlling (26) to produce the process of pulp bundle.The invention further relates to the device for controlling the bundle redistribution in pulp dryer.
Description
Technical field
The present invention relates to the method for production pulp bundle.
The invention further relates to the device for controlling the bundle redistribution in pulp dryer, the pulp dryer includes shaping
Control system is provided with portion, press section, drying section, cutting station (cutter-layboy) and bundling portion, the device, for controlling
The operation of pulp dryer processed.
Background technology
Pulp mill is a kind of manufacturing works that wood chip or other plant fiber source are converted into a large amount of fibers.Pulp mill differs
Determine to integrate with paper-making operation, therefore such slurry factory produces Market Pulp and is sold to paper mill.Market Pulp
Dried, be then cut into sheet material, these sheet-stackings are bundled so that they can be transported.Paper pulp sheet material is generally pressed
Bundled, its weight can be such as 200kg-250kg.
Pulp dryer generally includes forming section, and slurry to be dried is transported in the forming section by head box.
Behind forming section, it is press section, drying section, cutting part and is bundled into shape and final bundling system useable.In cutting part, web along its
Machine direction is cut into multiple partial-webs, these partial-webs and then is transversely cut into sheet material.Sheet material is stacked as tool
There is the bundle of target weight.The weight of the automatic single bundle of bundling ingredient requirement in pulp mill each other will not be excessively different.Mesh
Before, the amendment of weight is tied in (by removing or adding sheet material) manually processing.
The content of the invention
It is an object of the present invention to provide a kind of method for producing pulp bundle, with it, quality of production performance with
The solution of prior art is compared and significantly improved.
The purpose of the present invention can be realized substantially as disclosed belowly.
Embodiments in accordance with the present invention, by forming pulp web, the pulp web of dry forming, cutting pulp web
Pulp bundle is produced with cutting into sheet material and forming multiple parallel bundles of paper pulp sheet material.In the method, before cutting web,
The base weight of on-line measurement web, it is determined that the calculated weight of bundle, and the bundle for each formation of weighing in scale, and the scale for passing through bundle
Weigh to correct calculated weight, thereby determine that the correcting weight of bundle, and the correcting weight value tied is used to control production paper pulp
The process of bundle.
So, the precision increase of bundle platform, the base from on-line measurement value is focused at bundling station and calibrated with scale.The invention enables
Automatic bundling processing can be carried out without any manual control.The present invention reduces the work needed for the processing of paper pulp bundling
Amount.
Advantageously, it is the desired value of each bundle setting weight, and the correcting weight value tied is used for control production pulp bundle
Process to meet desired value.
Embodiments in accordance with the present invention, the correcting weight for each parallel bundle is determined, and obtains cross-level gravimetric value,
And web shapes so that each cross-level weight be used to control paper pulp in the lateral position corresponding to respective bundle
Shaping and/or the process dried.
Embodiments in accordance with the present invention, the forming process of pulp bundle includes the horizontal stroke by head box, by controlling dilution water
The cross machine direction basis of pulp web is controlled to supply, so as to control laterally bundle redistribution.
According to one embodiment of present invention, the forming process of paper pulp includes controlling paper pulp width by the head box of forming section
The cross machine direction basis of material so that each cross-level weight is used to control the horizontal stroke in the head box of the lateral position of respective bundle
Xiang Jichong.
Embodiments in accordance with the present invention, by by dilution water be supplied to correcting weight value be different from horizontal desired value those
Lateral attitude controls the cross machine direction basis in head box.
Embodiments in accordance with the present invention, are that the side bundle of multiple parallel bundles determines correcting weight, and based between two side bundles
In the middle of the weight of bundle determine referential weight value, and the correcting weight tied in side to referential weight deviation more than acceptable degree
In the case of, the edge of the web for the sidepiece that the lateral attitude of web edge is tied in side changes.
Embodiments in accordance with the present invention, the lateral attitude of web edge at forming section by controlling edge trimming injection to spray
The lateral attitude of mouth is controlled.
Embodiments in accordance with the present invention, the width of web is determined before the cutting of web, and the horizontal stroke of web edge
Controlled to position at forming section, so as to meet the desired value of the web width before the cutting of web.
Embodiments in accordance with the present invention, the lateral attitude of web edge changes at the first edge of web towards opposite edges
Become, and the lateral attitude of web edge changes at the second edge of web away from opposite edges, and web is caused at forming section
Lateral displacement, and guide web before being cut so that lateral position matches with cutting station.
Embodiments in accordance with the present invention, the process for producing the pulp bundle of bundle redistribution needed for for providing comprises the following steps
Any combination：
A) cross machine direction basis of pulp web is controlled by the head box of forming section, and each cross-level weight is used for
Cross machine direction basis in the lateral position control head box of respective bundle,
B) correcting weight of the side bundle of multiple parallel bundles is determined, and the weight based on the middle bundle between two side bundles is true
Determine referential weight value, and in the case where the deviation of the correcting weight that the side is tied to referential weight exceedes acceptable degree,
Change the lateral attitude of the web edge of the sidepiece of the side bundle,
C) correcting weight of the side bundle of multiple parallel bundles is determined, and the weight based on the middle bundle between two side bundles is true
Determine referential weight value, and in the case where the deviation of the correcting weight that the side is tied to referential weight exceedes acceptable degree,
The edge of the web for the sidepiece that the lateral attitude of web edge is tied in the side is changed.
Embodiments in accordance with the present invention, pulp dryer includes a kind of device for being used to control bundle redistribution, in the device
In, control system is arranged to be used for controlling the operation of pulp dryer.Control system includes input block, and it is suitable to and arrangement
The scale communication of on-line measurement scanner and bundling portion in pulp dryer, for receiving the base weight from online scanner
Measurement data, and weighed data for receiving the scale of the bundle from scale.Control system also include output unit, its be suitable to
Pulp dryer is communicated, and control data is sent into pulp dryer.
In addition, control system include data processing unit, the data processing unit include executable instruction, to by from
The base remeasurement data that online scanner is received calculate the weight of bundle, and correct the meter that the bundle scale of the bundle received from scale weighs
Weight is calculated, to determine the correcting weight of bundle.
Data processing unit advantageously comprises executable instruction, the correcting weight to determine each parallel bundle, obtains horizontal
Include executable instruction to correcting weight value, and data processing unit, using each cross-level weight, for controlling right
Should be in the process of shaping and/or the drying of the lateral position paper pulp of respective bundle.
Embodiments in accordance with the present invention, data processing unit includes executable instruction, to the head box by forming section
By the way that dilution water is supplied into correcting weight value difference, advantageously greater than those lateral attitudes of horizontal desired value, to control paper
The cross machine direction basis of pulp web material, and data processing unit include executable instruction, to be controlled using each cross-level weight
Make the cross machine direction basis in the head box of the lateral position of respective bundle.
Embodiments in accordance with the present invention, data processing unit includes executable instruction, is tied with the side for determining multiple parallel bundles
Correcting weight, and weight also based on bundle in the middle of between the bundle of two sides determines referential weight value, and data processing list
Member includes executable instruction, and the deviation to correcting weight to the referential weight of the determination tied in side exceedes the feelings of acceptable degree
Under condition, change the lateral attitude of the web edge of the edge of the web of the sidepiece of the side bundle.
According to another embodiment of the present invention, data processing unit includes executable instruction, with by controlling edge trimming
The lateral attitude of injection nozzle controls the lateral attitude of the web edge at forming section.
According to another embodiment of the present invention, data processing unit includes executable instruction, with before the cutting of web
The width of web is determined, and the lateral attitude of web edge is controlled at forming section, to meet width before the cutting of web
The desired value of material width.
According to still another embodiment of the invention, data processing unit includes executable instruction, with the first edge of web
Place changes the lateral attitude of web edge towards opposite edges, and away from opposite edges change width at the second edge of web
The lateral attitude of edge edge, causes the lateral displacement of web at forming portion, to guide web before cutting so that lateral position
Put and match with cutting station.
Advantageously, data processing unit include executable instruction, with before cutting by controlling the operation of deflector roll to draw
Lead web so that lateral position matches with cutting station.
The exemplary embodiment of the invention presented in the present patent application is not necessarily to be construed as to appended claims
Applicability is construed as limiting.Verb " comprising " is used as open limitation in the present patent application, and it is not excluded for the feature do not recorded
In the presence of.Term " machine direction " refers to overall operation direction of the web from the moist end of production line towards dry end.Term is " horizontal
To " refer in the general closed planar of web perpendicular to the direction of machine direction, i.e., from the side of machine to the direction of opposite side.
Herein, unless otherwise specified, weight refers to the gross weight of bundle, including dry and the weight of water in bundle.Unless another
Clearly state, the feature otherwise enumerated in dependent claims can be freely mutually combined.It is considered as the feature of the present invention
Novel feature be specifically described in the following claims.
Brief description of the drawings
Hereinafter, the present invention will be described with reference to the exemplary schematic figures enclosed, in the accompanying drawings：
Fig. 1 shows the pulp dryer using the method according to the invention；
Fig. 2 show according to an embodiment of the invention production period web top view；And
Fig. 3 shows the top view of the web in production period according to another embodiment of the present invention.
Embodiment
Fig. 1 schematically depict pulp dryer 10.Pulp dryer 10 includes following part：Forming section 12, squeezing
Portion 14, drying section 16, cutting station 18 and bundling portion 20.Paper pulp, particularly Market Pulp, are produced as aqueous suspension paper pulp from shaping
Head box 24 in portion 12 is introduced in building mortion 22, to form pulp web.Water, and shape are removed from pulp suspension
Into web.Web is directed into press section 14, and is further directed to drying section 16, to dry paper pulp and be removed from web
Unnecessary water.Generally, the water content of dry Market Pulp is about the 10% of pulp dry weight.
Dry web is directed into cutting station 18, and web is cut into partial-web, and office along machine direction here
Portion's web is transversely cut into sheet material.Sheet material be stacked it is bundled, bundle be extruded and generally be wrapped with bundling portion 20
Transport.
During paper pulp formation bundle is made, the continuous web by abreast advancing in the way of multiple bundles are formed simultaneously is tied
Sheet material formed.So, there is certain lateral extent in web, the lateral extent will form the paper pulp piece of multiple parallel bundles
The sheet material of material.One group of parallel bundle is formed simultaneously, and the possible weight differential tied is changed by the possibility of the cross machine direction basis of web
To determine.According to mill construction structure, there can be different types of conveyer (to swing conveying between paper cutter and baling press
Machine, transport conveyor, weighing conveyer (scale conveyor)).In last conveyer before baling press, to every
Individual bundle is weighed, and carries out the final checking of factory's output aggregate herein.
In Fig. 1, arrow A, B and C refers to the schematic plan of the web shown in Fig. 2 and Fig. 3, and it is represented along attached
The part such as the forming section A of the machine direction in figure from left to right, the web B of drying and bundle forming section C.Pulp dryer 10 is set
There is control system 26, it can also be expressed as quality control system and/or bundle quality system.It can be integrated form or split
Computer system.In production, the desired value of the weight set of every bundle is existed for.Herein, weight refers to the gross weight of bundle
Amount, including dry and the weight of water in bundle, unless otherwise specified.Desired value is available in the controls, for shape
The various control process tied into pulp web and from the formation of web sheet material.Pulp dryer is additionally provided with on-line measurement scanner
28, it is arranged to the base weight that the paper web of traveling is at least measured in the mode of crossing.So, the cross direction profiles of the base weight of web can be made
It is provided for on-line measurement value.Scanner 28 is arranged to be connected with the data transfer of control system 26 so that the survey of scanner 28
Value can be used for control system 26, for control purpose.Scanner 28 is positioned in before cutting station 18 and drying box
After 16, the drying box 16 can be such as air generation type (air born type).
Control system 26 includes input block 26.1, and it is suitable to communicate with on-line measurement scanner 28 so that base remeasurement
Data are sent to control system from online scanner 28.Input block 26.1 is further adapted for communicating with the scale 30 in bundling portion 20, is used to
The scale for receiving the bundle from scale 30 weighs data.
Control system 26 also includes output unit 26.2, and the output unit is suitable to pulp dryer communicate that number will be controlled
According to being sent to pulp dryer.Data processing unit 26.3 is additionally provided with control system 26.Data processing unit 26.3 includes can
Execute instruction, to calculate the weight of bundle by the base remeasurement data received from online scanner 28 and correct what is received from scale 30
The calculated weight that the bundle scale of bundle weighs, to determine the correcting weight of bundle.
As it was previously stated, pulp dryer 10, particularly its bundling portion 20 are provided with scale 30, by the scale 30 measurement bundle most
Accurate weight.Control system 26 carries out data transmission being connected with scale 30 so that the measured value of scale 30 can make for control system 30
With for control purpose.
In method according to an embodiment of the invention, base weight is online from dry but preferably still overall with web W
28 measurements.Next, base is reused in the so-called calculated weight for calculating each parallel bundle formed.By using the base of measurement
The size of monolithic and multi-disc determines calculated weight in weight, bundle, and the calculated weight is the result of Multiple factors.Next, passing through
The scale of bundle weighs to correct the weight of calculating.In fact, it is not the bundle newly formed or the bundle currently formed that the scale of bundle, which weighs,
Weight, and the weight or reference value of the bundle being previously formed, the moving average for the bundle being for example previously formed.Advantageously, scale
Weigh for providing correction factor, the correction factor is used for the calculated weight for correcting bundle.As shown in Fig. 2 parallel bundle 1-6 exists
Weighed one by one in scale 30, therefore, it is possible to respectively one correction factor of each parallel bundle distribution.In other words, Neng Gouwei
The each lateral extent for belonging to the web in the region of the bundle of each self-forming limits correction factor respectively.So, transversely formed
Each bundle can have special correction factor.Now, embodiments in accordance with the present invention, the correcting weight of bundle, which is used for control, makes paper pulp
The process of bundle is formed, to meet desired value and to provide desired bundle redistribution.So, it is the correction weight of each parallel bundle determination
Amount causes cross-level gravimetric value, and forms web, and the process is controlled such that each cross-level weight is used to control
Make the forming process in the paper pulp of the lateral position corresponding to respective bundle.
In order to operate pulp dryer 10 as needed, processing unit 26.3 includes executable instruction, every to determine to be used for
Individual parallel bundle 1-6 correcting weight, causes cross-level gravimetric value, and data processing unit 26.3 also includes executable finger
Order, it uses each cross-level weight, for controlling in the lateral position formation corresponding to respective bundle and/or drying paper
The process of slurry.
Generally, the expectation target value of the weight of bundle can be interpreted desired laterally bundle redistribution, and there is operation paper
Drying machine is starched to meet the desired determination scheme for laterally tying redistribution.
Hereinafter, the advantageous scheme during this is controlled using the correcting weight tied will be described.
First scheme
Embodiments in accordance with the present invention, head box 24 is so-called dilution headbox.Dilution headbox is provided with for controlling
Make the device 25 of the cross machine direction basis weight profile for the paper pulp stream discharged from head box.For the practical embodiments of dilution headbox, ginseng
Such as EP0635599A1 is examined, wherein, dilution water is supplied to by the manifold passage of the turbulent flow generator via such as head box
Vary in weight (advantageously greater than average value) web forming section those positions, to implement profile adjustment.Head box 24, especially
It is the device for controlling dilution effect, is arranged to and is communicated with the data transfer of control system 26 so that head box is in control system
Under the control of system 30, to meet desired laterally bundle redistribution.So, the cross machine direction basis of pulp web is by controlling dilution water
Horizontal supply and controlled by head box 24, to produce desired laterally bundle redistribution.
In first scheme, data processing unit 26.3 includes executable instruction, with by the head box 24 of forming section, logical
The lateral attitude that dilution water is supplied to those correcting weight values different (advantageously greater than horizontal desired values) is crossed, to control paper pulp
The cross machine direction basis of web；And also include executable instruction, to be controlled using each cross-level weight in respective bundle 1-6
Lateral position head box 24 in cross machine direction basis.
Now, check that weight is tied in single correction for desired value, and because the lateral extent of the web that forms bundle is (or wide
Spend region) it is known, therefore in the method, control to control transverse direction by using the dilution of head box in head box 24
Base weight.So, influence to tie redistribution by controlling the dilution profile in head box 24.In fact, this means intentionally make
The dry weight distribution of web can decline within a predetermined range, to be conducive to provide bundle redistribution evenly, i.e., so-called weight in wet base
Distribution.
So, the horizontal base that each cross-level bundle weight is used in the lateral position control head box of respective bundle
Weight, to provide desired distribution of weight.Advantageously, it is different (advantageously high by the way that dilution water is supplied into those correcting weight values
In horizontal desired value) lateral attitude control the cross machine direction basis in head box.
By means of first scheme, can control action in each bundle 1-6 of group bundle redistribution, but especially, should
Scheme is suitable to the weight for the middle bundle 2-5 for controlling the group.
Alternative plan
The end bundle 1,6 that alternative plan is mainly used in the group bundle 1-6 that control is formed by the width of web is (i.e. outmost
Bundle).This will be explained referring to Figures 1 and 2.Embodiments in accordance with the present invention, forming section 12 is preferably in the both sides of forming section
It is provided with edge trimming nozzle 32.Edge trimming nozzle 32 is connected to or is provided with for changing cutting position in the width direction
Device.Edge trimming arrangement of nozzles is into the edge W ' that web W is cut off by high-pressure water jet.So, front side nozzle and rear side spray
The distance between mouth 32 defines the width L1 of the web at forming section shown in fig. 2.Edge trimming nozzle 32 is arranged
Carry out data transmission communication into control system 26 so that the lateral attitude of the operation of edge trimming nozzle, particularly nozzle, can
Controlled for the purpose being explained below and by control system 30 in the way of being explained below.
Now, end of this group bundle, which ties 1,6, has by the position of edge trimming nozzle 32 and in the drying process web
The width that cross-direction shrinkage is limited.The width of web W after drying section 16 is shown with reference L2 in fig. 2.Online
Measurement scanner 28 be also arranged to measure drying section 16 after web width L2.Width L2 information is available for control system
26 use, for controlling the position of edge trimming nozzle 32.Embodiments in accordance with the present invention, will measure width L2 and width
Desired value is compared.The desired value of width is determined based on the group needed for bundle is formed in cutting station 18.Due to dried
The cross-direction shrinkage of web can change according to different situations (composition of such as paper pulp) in journey, therefore, edge trimming nozzle 32
Position be substantially continuously controlled so that dry web width L2 in the target zone of setting.
The actual weight of bundle depends on sheet area, therefore, it is possible to by controlling edge trimming nozzle 32 in forming section 12
Position come control bundle width so that control edge tie 1,6 actual weight.The edge that web is repaired at forming section 12 is that have
Benefit, because in the stage, can easily handle the sapwood under being trimmed (such as by slurrying again to be circulated back to stream slurry
Case), so it also avoid using excessive drying energy.
In the method, the correcting weight for the side bundle 1,6 of multiple parallel bundles (that is, group bundle 1-6) is determined, and
The referential weight value of weight based on the middle bundle 2-5 between two side bundles is determined.The correcting weight tied in side is to reference to weight
Amount deviate more than acceptable degree in the case of, the edge of the web for the sidepiece that the lateral attitude of web edge is tied in the side
Place is changed.This is realized advantageous by the lateral attitude for changing edge trimming injection nozzle 32.It should be appreciated that edge
The width of bundle has practical limit (practical limit), but the position for changing finishing injection nozzle 32 is highly effective
's.For example, if the gross weight of bundle is 250kg and packs containing 400, a piece of weight is 625g.If base weight is
800g/m2, then the size of square sheets is about 884mm × 884mm.Assuming that finishing injection nozzle 32 is moved so that dry plate material
Narrowed width 5mm.This causes bundle to reduce about 1kg.Therefore, continuously the position of injection nozzle 32 is repaired in control, results in the phase
Hope the side bundle of weight.
Data processing unit 26.3 includes executable instruction, to determine that 1,6 correction weight is tied in multiple parallel bundle 1-6 side
Amount, and referential weight value is also determined based on the middle weight for tying 2-5 between the bundle of both sides；And data processing unit 26.3 is also
Including executable instruction, to it is determined that side bundle finishing weight to referential weight the situation for deviating more than acceptable degree
Under, change the lateral attitude of the web edge of the edge of the web of the sidepiece of the side bundle.Advantageously, data processing unit
26.3 include executable instruction, to control the web side at forming section by controlling the lateral attitude of edge trimming injection nozzle
The lateral attitude of edge.
Embodiments in accordance with the present invention, data processing unit 26.3 also include executable instruction, with the cutting of web with
And the width of web is determined before the lateral attitude of the web edge at control forming section, to meet before the cutting of web
Web width desired value.
Embodiments in accordance with the present invention, can use alternative plan so that only monitoring is shunk, i.e. only detect drying section 16
Before and after web edge difference.In the region that base focuses on side bundle 1,6 in the case of stabilization, it is sufficient to the width for tying side
Degree keeps constant or is maintained in particular range.
Third program
The execution of third program needs pulp dryer 10 to be provided with the device for guiding web transversely to advance, for example
Web deflector roll 34 or guide roller system.The machine is additionally provided with sensor, and horizontal tracking is carried out to monitor web position.Web
Lateral position can be changed by appropriate inclined one or more rollers.Third program provides the available of the web of selection bundle
Lateral part possibility, so as to bundle redistribution as average as possible.As can see in figure 3, finishing injection
Nozzle 32 is positioned such that only to cut minimum finishing portion from first edge, and in opposite edges, second edge excision is larger
Finishing portion.Now, web laterally shifts to first edge.After drying section 16, web is guided by one or more deflector rolls 34
Cutting station 18 is returned to set desired position or set the position matched with cutting station 18.Under any circumstance, width L1 is controlled
System so that dry web width L2 as needed for tying in the cutting station formed.
Third program is being for example favourable in the case of having ponderable partial deviations close to the edge of web, and
The web region used by laterally moving, makes deviation range outside the web region used and is trimmed injection nozzle
32 cut away.
In order to complete the operation of third program, data processing unit 26.3 includes executable instruction, with the first of web
Edge changes the lateral attitude of web edge towards opposite edges, and changes at the second edge of web away from opposite edges
The lateral attitude of web edge, causes the lateral displacement of the web at forming section, and guides web before being cut so that lateral
Position matches with cutting station 18.Advantageously, data processing unit 26.3 includes executable instruction, with the behaviour by controlling deflector roll 34
Work guides web before cutting so that lateral position matches with cutting station 18.
According to circumstances, any combinations of scheme 1 to 3 can be used for improving bundle redistribution.By using all schemes can simultaneously
Obtain optimal controllability and result.
Although the example for being presently believed to be most preferred embodiment herein by combining describes the present invention, it is to be understood that
Be, the invention is not restricted to the disclosed embodiments, and be intended to cover its feature various combinations or modification, and be included in as
Some other applications in the scope of the present invention defined in the appended claims.The details referred to reference to any of the above described embodiments
It can be used with reference to another embodiment, as long as this combination is technically feasible.
Claims (13)
1. a kind of method for producing pulp bundle, its by formed (12) pulp web (W), dry the pulp web formed (14,
16), pulp web is cut with cutting (18) into sheet material and forms the paper pulp sheet materials of multiple parallel bundles (1-6) and produces paper pulp
Tie (1-6), it is characterised in that before the web is cut, the base weight of on-line measurement (28) described web determines the bundle
Calculated weight, and scale (30) weighs to each in the bundle of formation, and weighed by the scale of the bundle
To correct the calculated weight, the correcting weight of the bundle is thereby determined that, and the correcting weight value of the bundle is used to control
(26) process of pulp bundle is produced.
2. the method for production pulp bundle according to claim 1, it is characterised in that determine institute for each parallel bundle (1-6)
Correcting weight is stated, cross-level gravimetric value is obtained, and the web is formed so that each cross-level weight is used for right
The forming process and/or drying process of the paper pulp should be controlled in the lateral position of respective bundle.
3. the method for production pulp bundle according to claim 2, it is characterised in that the forming process of the paper pulp includes borrowing
Help the head box (24) of forming section, by controlling the horizontal supply of dilution water to control the cross machine direction basis of the pulp web, from
And control laterally bundle redistribution.
4. the method for production pulp bundle according to claim 1, it is characterised in that for the multiple parallel bundle (1-6)
Side bundle determines the correcting weight, and the weight based on bundle in the middle of between two sides bundles determines referential weight value, and
The correcting weight of side bundle can be in the case of acceptance level, in side bundle (1,6) to deviating more than for the referential weight
Sidepiece and the web edge change web edge the lateral attitude.
5. the method for production pulp bundle according to claim 4, it is characterised in that at the forming section, pass through control
The lateral attitude of edge trimming injection nozzle controls the lateral attitude of the web edge.
6. the method for production pulp bundle according to claim 4, it is characterised in that determined before the cutting of the web
The width of the web, and the lateral attitude of the web edge is controlled at the forming section, so as in the web
The desired value of the web width is met before cutting.
7. the method for production pulp bundle according to claim 4, it is characterised in that the court at the first edge of the web
Change the lateral attitude of web edge to opposite edges, and change web away from opposite edges at the second edge of the web
The lateral attitude at edge, the lateral displacement of the web is caused by deflector roll (34), for guiding the web before cutting,
So that the lateral position matches with the cutting station (18).
8. a kind of device for the bundle redistribution for being used to control in pulp dryer, the pulp dryer includes forming section (12), pressure
Squeezing portion (14), drying section (16), cutting station (18) and bundling portion (20), in the apparatus, control system (26) are arranged for
Control the operation of the pulp dryer (10), it is characterised in that the control system (26) includes：
- input block (26.1), suitable for the on-line measurement scanner (28) with being arranged in the pulp dryer and described
Scale (30) communication in bundling portion (20), for receiving the base remeasurement data from the online scanner (28), and is used for
The scale for receiving the bundle from the scale (30) weighs data；
- output unit (26.2), suitable for being communicated with the pulp dryer, the pulp dryer is sent to by control data
Machine；
- data processing unit (26.3), including executable instruction, to by from the online scanner (28) receive it is described
Base remeasurement data calculate the weight of the bundle, and the meter that correction is weighed from the bundle scale of the bundle of the scale (30) reception
Weight is calculated, to determine the correcting weight of the bundle.
9. the device of the bundle redistribution according to claim 8 for being used to control in pulp dryer, it is characterised in that described
Data processing unit (26.3) includes executable instruction, the correcting weight to determine each parallel bundle (1-6), obtains horizontal school
Positive gravimetric value, and the data processing unit include executable instruction, using each cross-level weight, for controlling right
Should be in the forming process and/or drying process of the lateral position paper pulp of respective bundle.
10. the device of the bundle redistribution according to claim 8 for being used to control in pulp dryer, it is characterised in that institute
Stating data processing unit (26.3) includes executable instruction, to the head box (24) by forming section, by the way that dilution water is supplied
It is given to correcting weight value difference, advantageously greater than those lateral attitudes of horizontal desired value, to control the horizontal stroke of the pulp web
Xiang Jichong, and the data processing unit include executable instruction, to be controlled using each cross-level weight each
From bundle (1-6) lateral position described in cross machine direction basis in head box (24).
11. the device of the bundle redistribution according to claim 8 for being used to control in pulp dryer, it is characterised in that institute
Stating data processing unit (26.3) includes executable instruction, to determine that the correction weight of (1,6) is tied in the side in multiple parallel bundles (1-6)
Amount, and also determined based on the middle weight for tying (2-5) between two side bundles at referential weight value, and the data
Managing unit includes executable instruction, and the deviation to correcting weight to the referential weight of the determination tied in the side exceedes energy
In the case of acceptance level, the transverse direction of the sidepiece tied in the side and the edge change web edge in the web
Position.
12. the device of the bundle redistribution according to claim 11 for being used to control in pulp dryer, it is characterised in that institute
Stating data processing unit (26.3) includes executable instruction, with by controlling the lateral attitude of edge trimming injection nozzle to control
The lateral attitude of the web edge at the forming section.
13. the device of the bundle redistribution according to claim 11 for being used to control in pulp dryer, it is characterised in that institute
Stating data processing unit (26.3) includes executable instruction, to change width towards opposite edges at the first edge of the web
The lateral attitude of edge edge, and the horizontal position away from opposite edges change web edge at the second edge of the web
Put, the lateral displacement of the web is caused by deflector roll (34), for guiding the web before cutting so that be described lateral
Position matches with the cutting station (18).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20156012A FI126654B (en) | 2015-12-28 | 2015-12-28 | A method for making cellulose bales and an arrangement for controlling the mass profile of the bales in a pulp drying machine |
| FI20156012 | 2015-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106988149A true CN106988149A (en) | 2017-07-28 |
| CN106988149B CN106988149B (en) | 2019-04-12 |
Family
ID=57570123
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611216143.1A Active CN106988149B (en) | 2015-12-28 | 2016-12-26 | Produce the device of the bundle redistribution in the method and control pulp dryer of pulp bundle |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3187656B1 (en) |
| CN (1) | CN106988149B (en) |
| BR (1) | BR102016030675B1 (en) |
| FI (1) | FI126654B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI130563B (en) * | 2022-05-17 | 2023-11-21 | Valmet Technologies Oy | Method in a pulp dryer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2930493A (en) * | 1957-11-25 | 1960-03-29 | Sundblad Karl Yngve | Apparatus for stacking and weighing sheets of wood pulp and the like |
| US3028980A (en) * | 1958-12-15 | 1962-04-10 | Svenska Ab Toledo | Apparatus for building and weighing stacks of sheets |
| US3084812A (en) * | 1958-10-29 | 1963-04-09 | Nordstroems Linbanor Ab | Means for stacking of sheets |
| CN104220669A (en) * | 2012-02-16 | 2014-12-17 | 国际纸业公司 | Methods for forming fluff pulp sheets |
| WO2015086294A1 (en) * | 2013-12-13 | 2015-06-18 | Voith Patent Gmbh | Method and machine for producing pulp boards |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE335100T1 (en) | 1993-07-01 | 2006-08-15 | Metso Paper Inc | METHOD AND DEVICE FOR CONTROLLING A HEADBOX |
-
2015
- 2015-12-28 FI FI20156012A patent/FI126654B/en active IP Right Grant
-
2016
- 2016-12-05 EP EP16202123.2A patent/EP3187656B1/en active Active
- 2016-12-26 CN CN201611216143.1A patent/CN106988149B/en active Active
- 2016-12-27 BR BR102016030675-2A patent/BR102016030675B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2930493A (en) * | 1957-11-25 | 1960-03-29 | Sundblad Karl Yngve | Apparatus for stacking and weighing sheets of wood pulp and the like |
| US3084812A (en) * | 1958-10-29 | 1963-04-09 | Nordstroems Linbanor Ab | Means for stacking of sheets |
| US3028980A (en) * | 1958-12-15 | 1962-04-10 | Svenska Ab Toledo | Apparatus for building and weighing stacks of sheets |
| CN104220669A (en) * | 2012-02-16 | 2014-12-17 | 国际纸业公司 | Methods for forming fluff pulp sheets |
| WO2015086294A1 (en) * | 2013-12-13 | 2015-06-18 | Voith Patent Gmbh | Method and machine for producing pulp boards |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3187656A1 (en) | 2017-07-05 |
| FI126654B (en) | 2017-03-31 |
| FI20156012A (en) | 2017-03-31 |
| EP3187656B1 (en) | 2018-08-22 |
| CN106988149B (en) | 2019-04-12 |
| BR102016030675A2 (en) | 2017-07-04 |
| BR102016030675B1 (en) | 2022-09-06 |
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