CN100371152C - Parallel on-line fuzzy adaptive glue compounding and applying control method and system for man-made board - Google Patents
Parallel on-line fuzzy adaptive glue compounding and applying control method and system for man-made board Download PDFInfo
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- CN100371152C CN100371152C CNB2005100096683A CN200510009668A CN100371152C CN 100371152 C CN100371152 C CN 100371152C CN B2005100096683 A CNB2005100096683 A CN B2005100096683A CN 200510009668 A CN200510009668 A CN 200510009668A CN 100371152 C CN100371152 C CN 100371152C
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Abstract
The present invention relates to a parallel on-line fuzzy self-adaptive glue adjusting and supplying control method and a control system for man-made boards. The control method comprises the steps of parallel glue adjusting control, on-line glue supplying control, the feedback control of glue supplying and the constant temperature control of raw glue. The control system comprises a parallel on-line glue adjusting and supplying device and a fuzzy self-adaptive control system, wherein the parallel on-line glue adjusting and supplying device is mainly formed by the mutual connection of a gear pump, a pipeline, a constant temperature control device of raw glue, a raw material storing tank group, a glue solution mixing storing tank, a liquid level sensor, a weight sensor, a stirring mechanism, a parallel glue adjusting mechanism, an on-line glue supplying mechanism, a nozzle, etc. The fuzzy self-adaptive control system is respectively connected with the gear pump on the input pipeline of raw materials, the parallel glue adjusting mechanism, the on-line glue supplying mechanism and the weight sensor of the raw materials after glue supply. The present invention can reduce glue consumption, improve proportioning accuracy and glue performance. Besides, the glue supplying amounts can be accurately controlled.
Description
Technical field:
The invention belongs to glue compounding and applying process control method and control system in wood-based plate (referring to fiberboard and the particieboard) production.
Background technology:
Multiple, commonly used method is arranged mainly is control impregnation and applying glue based on batch type glue compounding and applying technology to the glue compounding and applying process control method in the Wood-based Panel Production.Impregnation control is exactly the control that realizes different proportion is added preparation (raw material).Impregnation control method commonly used has liquid level control method, hopper detection method (volume metering method), measuring pump method, weight-loss metering method etc.Applying glue control is exactly by the ratio of control raw material of artifical plate (fiber or wood shavings) with resin added, controls the applied amount of glue well, the conventional control of the most of PID of employing of control method.But this batch type glue compounding and applying process control method, glue need storage in batches, and glue is precuring in advance easily, and the glue performance descends, even glue lost efficacy because the production line fault causes, waste is serious; Fed batch stirs, and systematic error is big, and service working time is long; The conventional control of PID is adopted in applying glue, when existing, control system becomes and the inertia lag phenomenon, and the resin added instability, the glue consumption is bigger than normal, and the glue compounding and applying control accuracy is low, and functional reliability is poor, causes the production cost to increase, and quality descends.
Summary of the invention:
The objective of the invention is problem at the prior art existence, a kind of wood-based plate parallel on-line fuzzy adaptive glue compounding and applying control method and control system are provided, it can reduce the glue loss, improve distributing precision and glue performance, accurately control resin added, reduce production costs, enhance productivity, guarantee product quality.
Control method of the present invention is:
1. parallel impregnation control: system is transported to different preparations such as virgin rubber, water, additive, curing agent separately basin respectively by gear pump, according to the impregnation prescription, with the virgin rubber is benchmark, control by control system, separately independently metering system meterings such as the pipeline by separately, governor impeller, flowmeter in proportion, directly evenly stir the distributing precision ± 10mL/min of buncher in the input glue mixed storage tank simultaneously; Adopt liquid level sensor, carry out control (the liquid level sensor certainty of measurement ± 1mm) of continuous feeding basin liquid level;
2. online applying glue control: the glue blending tank directly is connected with output channel, storage glue link in the middle of not having, system is by the self study of neuroid, realize the parallel quantitative online applying glue in impregnation limit in limit, the supply of glue is carried out with the raw material match synchronization by pipeline, governor impeller, flowmeter etc. in the applying glue process; During continuous operation, the comprehensive worst error of glue system is less than ± 3%, applying glue flow detection precision ± 1mL/min, and the control accuracy ± 10mL/min of resin added is to guarantee serialization production.
3. resin added FEEDBACK CONTROL:, detect the raw material after the applying glue, if any deviation according to the Weight control principle, by LOAD CELLS (LOAD CELLS certainty of measurement ± 0.01g) FEEDBACK CONTROL applying glue in time, by governor impeller, change resin added, to guarantee the processing compound of raw material and glue; In the control procedure, native system can be by the state parameter of system, and identification glue compounding and applying model is dynamically adjusted the parameter of controller, to adapt to the variation of different glue compounding and applying system model parameters, reaches more stable, control accurately and better dynamic response characteristic.
4. virgin rubber thermostatic control, adopt the temperature adjustment control device to guarantee to import the virgin rubber temperature constant of virgin rubber jar, so that former adhesiveness can not change with the variation of environment temperature, flow velocity, the flow of virgin rubber output are accurate when guaranteeing impregnation, the distributing precision of different preparations such as water, additive, curing agent when improving impregnation.
Control system of the present invention comprises parallel on-line glue compounding and applying device and adaptive fuzzy control system two parts, and parallel on-line glue compounding and applying device mainly contains material storaging tank group that gear pump, pipeline, virgin rubber thermostatically-controlled equipment, a N material storaging tank forms, glue mixed storage tank, liquid level sensor, weight sensor, rabbling mechanism, parallel impregnation mechanism and online applying glue mechanism, nozzle etc.Gear pump links to each other respectively with the inlet of each basin of material storaging tank group respectively by the raw material input channel, the virgin rubber input channel is provided with virgin rubber thermostatic control mechanism, the outlet of each basin of basin group is connected with an end of parallel impregnation mechanism respectively again, the other end of parallel impregnation mechanism links to each other with the inlet of glue mixed storage tank, in the glue mixed storage tank rabbling mechanism is installed, the glue mixed storage tank also links to each other with a weight sensor, in each basin in the material storaging tank group and the glue mixed storage tank liquid level sensor is housed all, the outlet of glue mixed storage tank links to each other by the end of output channel with online applying glue mechanism, and the other end of online applying glue mechanism links to each other with nozzle; Adaptive fuzzy control system respectively with the input channel of raw material on gear pump, parallel impregnation mechanism link to each other with raw material LOAD CELLS after online applying glue mechanism and the applying glue.
Characteristics of the present invention:
1. adopted based on the online glue compounding and applying control system of neuroid Modeling of Fuzzy self-adaptive parallel, can realize parallel in proportion impregnation accurately and change online quantitatively applying glue in proportion according to raw material, and the variation of the dynamic resin added of FEEDBACK CONTROL; This system adopts the fuzzy self-adaption method that dynamic pigtail knowledge, fuzzy control are carried out in the model variation of glue compounding and applying process, and is insensitive to parameter variation and environmental change, can be used for non-linear and the control multivariable complex object, and fast convergence rate, and robustness is good; The control law that can constantly revise oneself in utilization improves control performance, and resin added remains dynamic equilibrium, improves the measuring accuracy of glue amount and raw material; Improve the uniformity and the stability of glue compounding and applying, reduce the glue loss, but conservation 3%-5% satisfies the requirement of different material, various processes, has realized higher control accuracy.Cancelled middle storage glue link, can avoid the loss of solidifying, control to stir and the harmony of applying glue because of the glue that stops production or contingency causes.
2. the virgin rubber thermostatic control can make its viscosity not change with the variation of environment temperature; In the impregnation process, different preparation synchronous measurements, there are better distributing precision, adaptability and greater flexibility in system; In the applying glue process, the metering of the supply of various preparations and raw material is carried out synchronously, that glue and additive etc. is followed the tracks of is better in the variable condition of raw material weight, reaction soon, applying glue is more even, have higher operating accuracy and efficient, economize in raw materials 5% than batch type volume glue compounding and applying system commonly used.
3. but the running status of the whole glue compounding and applying Process Control System of on-line monitoring, the operation parameter that dynamically shows the glue compounding and applying Process Control System in the mode of literal and figure: motor, pump, frequency converter, weight, flow, rotating speed, save historical data, inquire about, print various parameters; Online establishment, modification, preservation, the original glue compounding and applying prescription of demonstration and technological parameter, and can download to the PLC control device; Can executing agency and sensor, the controller of glue compounding and applying control appliance be detected; Have and report to the police and the inquiry of historical data function, improve the security of system, reliability.
4.WINDOWS running environment is formed dcs by CONTROL LINK fieldbus and glue compounding and applying console, the intellectuality that has improved the glue compounding and applying process, and hommization and simplification degree can realize manually and control automatically.
Description of drawings:
Fig. 1 is an operation principle block diagram of the present invention
Fig. 2 is an embodiment of the invention adaptive fuzzy control system structural representation
Fig. 3 is the control system overall structure schematic diagram of the embodiment of the invention
The specific embodiment 1: particieboard glue compounding and applying control
Control system of the present invention comprises parallel on-line glue compounding and applying device and adaptive fuzzy control system two parts, and parallel on-line glue compounding and applying device comprises material storaging tank group that gear pump 1, virgin rubber thermostatically-controlled equipment 19, pipeline 20, liquid level sensor 21, a N material storaging tank forms, rabbling mechanism 15, glue mixed storage tank 16, weight sensor 17, parallel impregnation mechanism and online applying glue mechanism, nozzle 18 etc.The material storaging tank group that stainless steel is made comprises virgin rubber basin 6, water basin 7, additive basin 8, curing agent basin 9,4 gear pumps 1 by raw material input channel 20 respectively with each basin 6 of material storaging tank group, 7,8,9 inlet links to each other, raw material input channel 20 is provided with virgin rubber thermostatic control mechanism 19, be separately installed with liquid level sensor 21 in 4 basins of basin group and the glue mixed storage tank 16, the outlet of 4 basins of basin group is connected with an end of parallel impregnation mechanism respectively again, parallel impregnation mechanism is by pipeline, valve 10, filter 11, magnetic valve 12, governor impeller 13, flowmeter 14 grades are connected in series, the other end of parallel impregnation mechanism links to each other with the inlet of glue mixed storage tank 16, stirring arm 15 is installed in the glue mixed storage tank 16, glue mixed storage tank 16 also links to each other with a weight sensor 17, the outlet of glue mixed storage tank 16 links to each other by the end of output channel with online applying glue mechanism, online applying glue mechanism also is by pipeline, hand valve 10, filter 11, magnetic valve 12, governor impeller 13, flowmeter 14 compositions such as grade, the other end of online applying glue mechanism links to each other with nozzle 18.On adaptive fuzzy control system adopts, the slave computer structure, it is by supervisory computer 2 (host computer), CONTROL LINK bus network, Large PLC electrical control gear (slave computer 3), touch-screen 4, becoming send (frequently) device 5 compositions such as grade, host computer (supervisor 2) is operated in the WINGDOWS environment, link to each other with slave computer 3 by the CONTROLLINK fieldbus, (frequently) device 5 is sent in slave computer PLC control device and change, touch-screen 4, the gear pump 1 that raw material in the parallel on-line glue compounding and applying device is carried, parallel impregnation mechanism, online applying glue mechanism, liquid level, flow sensor links to each other with raw material LOAD CELLS after the applying glue; Glue compounding and applying process prescription and technological parameter are revised in host computer input, and under pass to slave computer PLC control device; Slave computer is finished demonstration, storage, the statistical query of each process duty in the whole system, the generation of form, tasks such as printing and process monitoring, control device are accepted to become and are sent (frequently) device glue compounding and applying process data that biography is come and combined formulation that the glue compounding and applying process is implemented to control.
The course of work, at first, system is transported to virgin rubber, water, additive, curing agent etc. separately basin respectively by gear pump 1, and keeps virgin rubbers to be in normal temperature (being generally 20 ℃) by virgin rubber thermostatically-controlled equipment 19; System passes through pipeline separately then, valve 10, magnetic valve 12, governor impeller 13, and flowmeter 14 grades are metering system independently, and according to technical recipe, metering is according to a certain ratio continuously and automatically directly evenly stirred in the input glue blending tank simultaneously, and impregnation walks abreast.Glue blending tank 16 is connected with output channel, and by valve 10, magnetic valve 12, governor impeller 13, flowmeter 14 is sent into blender, realizes pressing quantitatively continuous online applying glue of material rate control.The wood shavings LOAD CELLS sends the variation of signal monitoring raw material, controls glue output governor impeller rotating speed by microcomputer, to guarantee constant resin added.Liquid level sensor can be controlled each basin material level, and control gear pump 1 is to guarantee continuous feeding.
The specific embodiment 2: dry-process fiberboard is executed the dry glue compounding and applying control in back earlier
Control system is the same, technical process: at first, system is transported to virgin rubber, water, additive, curing agent etc. separately basin respectively by gear pump, and keeps virgin rubber to be in normal temperature (being generally 20 ℃) by the control register; System passes through pipeline separately then, governor impeller, and flowmeters etc. are metering system independently, and according to technical recipe, metering is according to a certain ratio continuously and automatically directly evenly stirred in the input glue blending tank simultaneously, and impregnation walks abreast.The glue blending tank is connected with output channel by governor impeller, flowmeter sends glue into the fiber drying pipeline, realizes pressing the quantitatively continuous online applying glue of defibrator feeding screw conveying fiber amount control glue; Dried fiber sends signal feedback by the LOAD CELLS weighing and exports governor impeller to glue, controls its rotating speed to guarantee constant resin added.Liquid level sensor can be controlled each basin material level, and control gear pump 1 is to guarantee continuous feeding.
The specific embodiment 3: dry-process fiberboard elder generation drying after dryer sizing glue compounding and applying control
Control system is the same, technical process: at first, system is transported to virgin rubber, water, additive, curing agent etc. separately basin respectively by gear pump, and keeps virgin rubber to be in normal temperature (being generally 20 ℃) by the control register; System passes through pipeline separately then, governor impeller, and flowmeters etc. are metering system independently, and according to technical recipe, metering is according to a certain ratio continuously and automatically directly evenly stirred in the input glue blending tank simultaneously, and impregnation walks abreast.The glue blending tank is connected with output channel by governor impeller, flowmeter sends glue into fiber glue mixer or drying duct, realizes pressing quantitatively continuous online applying glue of material rate control.The fiber LOAD CELLS sends the variation of signal monitoring raw material, controls glue output governor impeller rotating speed by microcomputer, to guarantee constant resin added.Liquid level sensor can be controlled each basin material level, and control gear pump 1 is to guarantee continuous feeding.
Claims (6)
1. wood-based plate parallel on-line fuzzy adaptive glue compounding and applying control method is characterized in that its control method is:
(1) parallel impregnation control: system is transported to basin separately with virgin rubber, water, additive, the different preparations of curing agent respectively by gear pump, according to the impregnation prescription, with the virgin rubber is benchmark, control by control system, pass through separately pipeline, governor impeller, independently metering system metering of flowmeter in proportion separately, evenly stir the distributing precision ± 10mL/min of buncher in the parallel simultaneously directly input glue mixed storage tank; Adopt liquid level sensor, carry out the control of continuous feeding basin liquid level, liquid level sensor certainty of measurement ± 1mm;
(2) online applying glue control: the glue blending tank directly is connected with output channel, and storage glue link in the middle of not having, system realize the parallel quantitative online applying glue in impregnation limit in limit by the self study of neuroid; In the applying glue process, the supply of glue is undertaken by pipeline, governor impeller, flowmeter and raw material match synchronization, during continuous operation, the comprehensive worst error of glue system is less than ± 3%, applying glue flow detection precision ± 1mL/min, control accuracy ± the 10mL/min of resin added is to guarantee serialization production;
(3) resin added FEEDBACK CONTROL: according to the Weight control principle, the raw material after the detection applying glue, if any deviation, by LOAD CELLS, FEEDBACK CONTROL applying glue in time by the speed governing variable pump, changes resin added, to guarantee the processing compound of raw material and glue; In the control procedure, native system can be by the state parameter of system, and identification glue compounding and applying model is dynamically adjusted the parameter of controller, to adapt to the variation of different glue compounding and applying system model parameters, reaches more stable, control accurately and better dynamic response characteristic;
(4) virgin rubber thermostatic control, adopt the temperature adjustment control device to guarantee to import the virgin rubber temperature constant of virgin rubber jar, so that former adhesiveness can not change with the variation of environment temperature, flow velocity, the flow of virgin rubber output are accurate when guaranteeing impregnation, the distributing precision of water, additive, the different preparations of curing agent when improving impregnation.
2. the control system of a wood-based plate parallel on-line fuzzy adaptive glue compounding and applying, it is characterized in that: it comprises parallel on-line glue compounding and applying device and adaptive fuzzy control system two parts, and the material storaging tank group that parallel on-line glue compounding and applying device is made up of gear pump, pipeline, virgin rubber thermostatically-controlled equipment, a N material storaging tank, glue mixed storage tank, liquid level sensor, weight sensor, rabbling mechanism, parallel impregnation mechanism and online applying glue mechanism, nozzle are formed; Gear pump links to each other respectively with the inlet of each basin of material storaging tank group respectively by the raw material input channel, the raw material input channel is provided with virgin rubber thermostatic control mechanism, the outlet of each basin of basin group is connected with an end of parallel impregnation mechanism respectively again, the other end of parallel impregnation mechanism links to each other with the inlet of glue mixed storage tank, in the glue mixed storage tank rabbling mechanism is installed, the glue mixed storage tank also links to each other with a weight sensor, in each basin in the material storaging tank group and the glue mixed storage tank liquid level sensor is housed all, the outlet of glue mixed storage tank links to each other by the end of output channel with online applying glue mechanism, and the other end of online applying glue mechanism links to each other with nozzle; Adaptive fuzzy control system respectively with the input channel of raw material on gear pump, parallel impregnation mechanism and online applying glue mechanism and applying glue after raw material on weight sensor link to each other.
3. the control system of wood-based plate parallel on-line fuzzy adaptive glue compounding and applying as claimed in claim 2 is characterized in that the material storaging tank group in the described parallel on-line glue compounding and applying control device is made up of glue basin, water basin, additive basin, curing agent basin.
4. the control system of wood-based plate parallel on-line fuzzy adaptive glue compounding and applying as claimed in claim 2, it is characterized in that described parallel impregnation mechanism is connected in series by pipeline, hand valve, filter, magnetic valve, governor impeller, flowmeter, according to the independent parallel setting separately of preparation difference.
5. the control system of wood-based plate parallel on-line fuzzy adaptive glue compounding and applying as claimed in claim 2 is characterized in that described online applying glue mechanism is connected in series by pipeline, hand valve, filter, magnetic valve, governor impeller, flowmeter.
6. the control system of wood-based plate parallel on-line fuzzy adaptive glue compounding and applying as claimed in claim 2, on it is characterized in that described adaptive fuzzy control system adopts, the slave computer structure, described adaptive fuzzy control system is by the host computer supervisory computer, CONTROL LINK bus network, slave computer Large PLC electrical control gear, touch-screen, frequency converter is formed, host computer is operated in the WINGDOWS environment, link to each other slave computer PLC control device and frequency converter with slave computer by CONTROL LINK fieldbus, touch-screen, the gear pump of the input channel of raw material in the parallel on-line glue compounding and applying device, parallel impregnation mechanism, online applying glue mechanism, liquid level, flow sensor links to each other with raw material LOAD CELLS after the applying glue.
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| CNB2005100096683A CN100371152C (en) | 2005-01-26 | 2005-01-26 | Parallel on-line fuzzy adaptive glue compounding and applying control method and system for man-made board |
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| US7770760B2 (en) * | 2007-02-12 | 2010-08-10 | Illinois Tool Works Inc. | Modular system for the delivery of hot melt adhesive or other thermoplastic materials |
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| CN104191490B (en) * | 2014-08-22 | 2017-02-15 | 云南玉加宝人造板有限公司 | Automatic gluing system for artificial boards |
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| CN105922368A (en) * | 2016-05-13 | 2016-09-07 | 安庆市峰邦工业产品设计有限公司 | Dynamic monitoring assembly used in compression process of wood splicing machine |
| CN106363758A (en) * | 2016-11-14 | 2017-02-01 | 漳州捷龙自动化技术有限公司 | Double-measurement glue applying system |
| PL3470191T3 (en) * | 2017-10-16 | 2020-07-13 | SWISS KRONO Tec AG | Method and device for manufacturing a wood composite board |
| CN107999301A (en) * | 2017-12-19 | 2018-05-08 | 贺州速丰木业股份有限公司 | A kind of glue system |
| CN108970830A (en) * | 2018-06-21 | 2018-12-11 | 苏州宏久航空防热材料科技有限公司 | A kind of integrated adhesive process system of efficient stable |
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