CN114988675A - Control device and control method for flat glass warping defect - Google Patents
Control device and control method for flat glass warping defect Download PDFInfo
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- CN114988675A CN114988675A CN202210592368.6A CN202210592368A CN114988675A CN 114988675 A CN114988675 A CN 114988675A CN 202210592368 A CN202210592368 A CN 202210592368A CN 114988675 A CN114988675 A CN 114988675A
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- 230000007547 defect Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000005357 flat glass Substances 0.000 title claims abstract description 20
- 239000011521 glass Substances 0.000 claims abstract description 179
- 238000000137 annealing Methods 0.000 claims abstract description 120
- 230000001276 controlling effect Effects 0.000 claims abstract description 27
- 230000002159 abnormal effect Effects 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 230000033001 locomotion Effects 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 11
- 238000009529 body temperature measurement Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000001931 thermography Methods 0.000 abstract description 3
- 208000032370 Secondary transmission Diseases 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000007507 annealing of glass Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000034303 cell budding Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000005329 float glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
- C03B25/04—Annealing glass products in a continuous way
- C03B25/06—Annealing glass products in a continuous way with horizontal displacement of the glass products
- C03B25/08—Annealing glass products in a continuous way with horizontal displacement of the glass products of glass sheets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention belongs to the technical field of glass plate production, and particularly relates to a device and a method for controlling a flat glass warping defect. The device comprises a first infrared thermal imaging temperature measuring instrument and an upper temperature regulator, wherein the first infrared thermal imaging temperature measuring instrument is fixedly arranged above the annealing kiln roller and is used for measuring the temperature of the upper surface of the glass plate, and the upper temperature regulator is slidably arranged above the annealing kiln roller and is used for regulating the temperature of the upper surface of the glass plate; the first thermal infrared imager, the upper temperature regulator, the second thermal infrared imager and the lower temperature regulator are all electrically connected with the intelligent control system. The control device and the control method can quickly and accurately judge and process abnormal points of the temperature of the glass plate surface, and have the characteristics of high automation degree, reduction of labor intensity of workers and the like.
Description
Technical Field
The invention belongs to the technical field of glass plate production, and particularly relates to a device and a method for controlling a sheet glass warping defect.
Background
In the glass production process, float glass is shaped in a tin bath from molten glass, and then enters an annealing furnace for annealing treatment. The glass is cooled in the lehr over a time period sufficient to pass through the annealing temperature range or at a slow rate to minimize or eliminate thermal stresses in the glass. In the annealing process, the warping defect of the glass is often generated due to the large temperature difference between the upper and lower surfaces of the glass plate or the large temperature difference in the transverse direction of the glass plate. The generation of glass warping defects not only affects the yield of glass, but also may cause production safety accidents in the case of severe warping.
The warpage is divided into permanent warpage and temporary warpage, and the permanent warpage and the temporary warpage are generated because the temperature difference exists between the upper part and the lower part of the glass plate or in the width direction of the glass plate in the annealing and cooling processes of the glass plate, so that the cooling strength and the center of the two sides of the glass plate are inconsistent, or the cooling strength of the upper surface and the lower surface of the glass plate is inconsistent, and the permanent stress or the temporary stress is unevenly distributed. In the prior art, when a glass plate has a warp defect, the glass plate can be cut and sampled only after annealing is completed, and then detection and judgment are carried out by using off-line special warp detection equipment. If the glass plate is warped, a process technician judges the position of the glass plate possibly with inconsistent temperature in the annealing process of the annealing kiln according to the position of the warping on the glass plate by experience, then carries out annealing temperature adjustment of relevant areas, then carries out sampling detection, and repeats the process until the warping defect is solved. The method for solving the warping defect of the glass plate has the following problems: 1. the duration of the warping defect is long, and the sampling detection can be carried out only after the glass plate is off-line; 2. judging the temperature inconsistent parts of the glass plate 3 warping in the annealing kiln, different process technicians may have different judgment results by means of the experience of the technicians.
Disclosure of Invention
The invention aims to provide a control device and a control method for the plane glass warping defect aiming at the problems in the prior art, the control device and the control method can quickly and accurately judge and process the abnormal point of the glass plate surface temperature, have the characteristics of high automation degree, reduction of labor intensity of workers and the like, and can solve the generation of the plane glass warping defect from the source and improve the yield of the produced glass.
The technical scheme of the invention is as follows:
the utility model provides a controlling means of sheet glass warpage defect installs at the inside annealing kiln subaerial of annealing kiln, and the annealing kiln includes the annealing kiln casing, sets up the annealing kiln stand that two rows of symmetries set up outside the annealing kiln casing side by side, every row the annealing kiln stand connect gradually through the bracing piece, an annealing kiln roller axle is connected respectively at two rows of corresponding two annealing kiln stand tops, sets up the annealing kiln roller on the annealing kiln roller axle, and the annealing kiln roller top is placed and is waited to detect the glass board.
The control device comprises a first thermal infrared imager thermometer and an upper temperature regulator, wherein the first thermal infrared imager thermometer is fixedly arranged above the annealing kiln rollers and used for measuring the temperature of the upper surface of the glass plate, and the upper temperature regulator is slidably arranged above the annealing kiln rollers and used for regulating the temperature of the upper surface of the glass plate; the first thermal infrared imager, the upper temperature regulator, the second thermal infrared imager and the lower temperature regulator are all electrically connected with the intelligent control system.
Specifically, the first thermal infrared imager thermodetector is mounted at the center of the top of the inner wall of the annealing kiln shell at the tail end of the annealing kiln A area; the annealing furnace is characterized in that a second thermal infrared imager sliding rail parallel to the motion direction of the glass plate is installed at the bottom of the annealing furnace A, a second thermal infrared imager is arranged on the second thermal infrared imager sliding rail in a sliding mode, the second thermal infrared imager is connected with a second driving assembly and driven by the second driving assembly to reciprocate along the sliding rail, the second driving assembly is connected with an intelligent control system, and the second driving assembly is arranged on the sliding rail.
Specifically, the second thermal infrared imager slide rail is i-shaped, the second thermal infrared imager slide rail is fixed at the bottom of the annealing furnace shell, the second thermal infrared temperature measurement and the second driving assembly are fixedly arranged on a slide plate, the slide plate is slidably mounted on the upper portion of the second thermal infrared imager slide rail through a clamping groove, the second driving assembly is connected with a pulley through a gear set, the pulley is mounted inside one side of the second thermal infrared imager slide rail in a rolling mode, the second driving assembly drives the pulley to move on the second thermal infrared imager slide rail, and meanwhile the pulley drives the second thermal infrared image temperature measurement to move on the second thermal infrared imager slide rail.
The annealing kiln shell side wall upper portion fixed be provided with the parallel last temperature regulator connecting piece of installation direction and glass board direction of motion, last temperature regulator connecting piece including fixing the last connection mounting at annealing kiln shell both sides inner wall, go up temperature regulator's both ends and be connected with last connection mounting through T type pendant respectively, every last connection mounting all connect bevel gear set through the rack side of rack and pinion rack group, last temperature regulator's both ends be connected with the gear side of rack and pinion rack group respectively, two bevel gear sets are connected with first drive assembly respectively and carry out the transmission of power, last temperature regulator along last temperature regulator connecting piece reciprocating motion under first drive assembly's drive, first drive assembly be connected with intelligent control system.
Specifically, the two side walls of the lower part of the annealing kiln shell are respectively and fixedly provided with a lower temperature regulator connecting piece with the installation direction parallel to the movement direction of the glass plate, the lower temperature regulator connecting piece comprises two lower temperature regulator connecting and fixing bodies and a transmission shaft, the two lower temperature regulator connecting and fixing bodies are fixedly arranged on the two side walls of the lower part of the annealing kiln shell, the installation direction of the lower temperature regulator connecting and fixing bodies is parallel to the movement direction of the glass plate, the transmission shaft is connected with a third driving assembly, the transmission shaft simultaneously penetrates through the two lower temperature regulator connecting and fixing bodies through a bearing, the bearing is arranged in the lower temperature regulator connecting and fixing bodies along the movement direction of the glass plate, the transmission shaft is also provided with a driving chain wheel positioned at the inner side of the lower temperature regulator connecting and fixing bodies, the other end of the corresponding driving chain wheel is provided with a driven chain wheel, each group of driving chain wheel and the driven chain wheel are provided with a widening chain, and the two ends of the temperature regulators are respectively fixed on two groups of widening chains, the lower temperature regulator is driven by a third driving assembly to reciprocate along a lower temperature regulator connecting piece, and the third driving assembly is connected with an intelligent control system.
The upper temperature regulator and the lower temperature regulator are identical in structure and comprise a heat-resistant stainless steel square pipe shell in a cuboid shape, five cylindrical sprayers which are uniformly distributed are arranged below the shell of the upper temperature regulator, five sprayers which are uniformly distributed are arranged above the shell of the lower temperature regulator, five cylindrical air inlet pipes are arranged inside the shell, the five air inlet pipes are correspondingly connected with the five sprayers respectively, the upper temperature regulator and each sprayer of the lower temperature regulator are communicated with a four-position four-way reversing valve through connecting pipes simultaneously, and the four-position four-way reversing valve is connected with two different high-temperature high-pressure nitrogen storage tanks respectively.
Specifically, every nozzle mouth department of shower nozzle ware all install the temperature and pressure sensor that is used for measuring shower nozzle ware blowout gas's pressure and temperature, temperature and pressure sensor be connected with the intelligent control system electricity, last temperature regulator and temperature regulator's shower nozzle ware all be 50 mm-600 mm apart from the height of glass board down.
Specifically, the universal nozzle is arranged in the sprayer, the universal nozzle is in a spherical shape, the connecting part of the inner wall of the sprayer and the universal nozzle is in a spherical shape, the nozzle opening of the universal nozzle is a rectangular nozzle or a circular nozzle, and the universal nozzle can rotate at 0-180 degrees and rotate at 0-45 degrees in the sprayer along the circular line of the sprayer.
A method for controlling a warp defect of a glass sheet using the apparatus for controlling a warp defect of a sheet glass as described above, comprising the steps of:
s1, establishing a networked subarea on the surface of a glass plate;
s2, the first thermal infrared imager scans the upper surface of the glass plate to be measured to measure the temperature of the whole plate, the measured data are transmitted to an intelligent control system, when the temperature of a certain part of the surface of the glass plate is inconsistent with the annealing temperature of the certain part or the temperature of the peripheral glass plate, the intelligent control system sends a command to a second driving assembly, the second driving assembly is started and drives the second thermal infrared imager to move to the abnormal temperature point of the glass plate, the temperature of the lower surface of the glass plate is measured, the measured temperature value of the lower surface of the glass plate is transmitted to the intelligent control system, and the intelligent control system compares and analyzes the temperature of the upper surface and the temperature of the lower surface of the glass plate and the temperature of the surface of each part of the glass plate in the width direction and judges whether the temperature is abnormal;
s3, judging whether the temperature of the glass plate is abnormal by the intelligent control system, determining the temperature difference and the area of the abnormal part, selecting and matching the shape and the size of a nozzle opening of a sprayer, the pressure and the flow of sprayed nitrogen and the height parameter of the sprayer from the surface of the glass plate, controlling an upper temperature regulator by the intelligent controller through a first driving assembly, and controlling a lower temperature regulator to move to the abnormal point of the temperature of the glass plate by a third driving assembly;
s4, the intelligent control system opens the four-position four-way reversing valves with corresponding numbers by analyzing the temperature difference of the surface of the glass plate, sprays high-temperature nitrogen to the part with low temperature of the surface of the glass plate through a sprayer, and sprays low-temperature nitrogen to the part with high temperature of the surface of the glass plate;
and S5, finally realizing uniform temperature of the surface of the glass plate, and finishing annealing according to the annealing temperature curve of the glass plate.
Specifically, the method for establishing the networked partition of the glass plate surface comprises the following steps: the moving direction of the glass plate is defined as Y axis, the outer circumference of the first annealing furnace roller at the entrance of the moving direction of the glass plate is set as the starting point of the Y axis, the first annealing furnace roller is Y1, the second annealing furnace roller is Y2, the third annealing furnace roller is Y3, … …, the starting point of the X axis is defined as the X axis along the width direction of the glass plate, the starting point of the X axis is arranged at the left part of the glass plate and is divided into six sections of five points on average along the width direction of the glass plate, namely, the left side part of the glass plate is X1, the left middle part of the glass plate is X2, the middle line part of the glass plate is X3, the right middle part of the glass plate is X4, and the right side part of the glass plate is X5. Five points arranged on the X axis are respectively consistent with the positions of the five spray heads of the upper temperature regulator and the lower temperature regulator.
The invention has the beneficial effects that: the control device provided by the invention comprises a first thermal infrared imager and a second thermal infrared imager which are arranged in an annealing kiln, the temperatures of the upper surface and the lower surface of a glass plate are detected through the two thermal infrared imagers, the detected data are transmitted to an intelligent control system for comparative analysis and processing, after an abnormal point is determined, the intelligent control system sends an instruction, an upper temperature regulator and a lower temperature regulator respectively and rapidly move to the abnormal temperature point of the glass plate under the drive of a first drive assembly and a third drive assembly, and the upper surface and the lower surface of the glass plate are subjected to temperature compensation by using nitrogen with proper temperature and pressure, so that the temperatures of the surfaces of the glass plate are consistent, and the temperature annealing process requirements of the glass plate are met. The method can quickly and accurately judge and process the abnormal point of the surface temperature of the glass plate, has the characteristics of high automation degree, reduction of labor intensity of workers and the like, can solve the generation of the warping defect of the plate glass from the source, and improves the yield of the produced glass.
Drawings
FIG. 1 is a schematic view of the structure of a glass warp defect control apparatus according to the present invention;
FIG. 2 is a schematic view of the present invention showing the positioning of the coordinate system of the glass sheet 3, the direction indicated by the arrow referring to the moving direction of the glass sheet 3;
FIG. 3 is a schematic view showing the control principle of nitrogen gas used in the present invention;
FIG. 4 is a schematic view of the structure of the sprinkler of the present invention;
FIG. 5 is a schematic view of the upper thermostat connector and upper thermostat connection structure;
FIG. 6 is a schematic view showing a connection structure of a lower thermostat connecting member with a lower thermostat;
FIG. 7 is a transmission structure diagram of a second thermal infrared imager.
The device comprises a first driving assembly 1, an upper temperature regulator 2, a glass plate 3, a lower temperature regulator 4, an annealing kiln upright post 5, a second infrared thermal imager 6, a second driving assembly 7, an intelligent control system 8, a second infrared thermal imager slide rail 9, an upper temperature regulator connecting piece 10, an annealing kiln shell 11, a first infrared thermal imager 12, an annealing kiln roller 13, a lower temperature regulator connecting piece 14, an annealing kiln ground 15, a third driving assembly 16, a high-temperature air source 17, a four-position four-way reversing valve group 18, a temperature and pressure sensor 19, a nozzle 20, a universal nozzle 21, a nozzle opening 22, a bevel gear group 23, a gear tooth group 24, a T-shaped hanger 26, an upper connecting fixing body 26, a 27 transmission shaft 28 sprocket group, a lower connecting fixing body 29, a gear group 30 and a pulley 31.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and the detailed description.
As shown in FIG. 1, the structural schematic diagram of the device for controlling the sheet glass warping defect is arranged on the ground 15 of the annealing kiln in the annealing kiln, and can be arranged in an A area, a B area or a C area of the annealing kiln on line, the subareas of the annealing kiln are the inherent characteristics of the annealing kiln, and the glass annealing kiln is divided into the A area, the B area, the C area, the D area, the Ret area, the E area and the F area. After the glass liquid is formed into the glass plate 3, the glass plate 3 is driven by the roller of the annealing kiln to move, firstly enters an A area (545 ℃ to 600 ℃) of the annealing kiln, and then sequentially passes through an B area (480 ℃ to 545 ℃), a C area (380 ℃ to 480 ℃), a D area (220 ℃ to 380 ℃), a Ret area (140 ℃ to 220 ℃), an EF area (60 ℃ to 140 ℃), wherein an ABC three area is an annealing kiln heat preservation area, and baffles are arranged between the three areas to separate the three areas, so that the temperature can be regulated and controlled. Several areas behind the annealing kiln are basically open, and cooling air is blown to forcibly cool and anneal. Annealing kiln includes annealing kiln casing 11, and annealing kiln casing 11 sets up two rows of annealing kiln stands 5 that the symmetry set up side by side outward, every row annealing kiln stand 5 connect gradually through the bracing piece, and an annealing kiln roller axle is connected respectively at two rows of two corresponding annealing kiln stands 5 tops, and the epaxial annealing kiln roller 13 that sets up of annealing kiln roller is placed above 13 annealing kiln rollers and is waited to detect glass sheet 3.
The control device comprises a first thermal infrared imager thermodetector 12 fixedly arranged above the annealing kiln rollers 13 and used for measuring the temperature of the upper surface of the glass plate 3, and an upper temperature regulator 2 arranged above the annealing kiln rollers 13 in a sliding manner and used for regulating the temperature of the upper surface of the glass plate 3; the first thermal infrared imager 12, the upper temperature regulator 2, the second thermal infrared imager 6 and the lower temperature regulator 4 are all electrically connected with the intelligent control system 8.
Example 1
In the embodiment, a more detailed structure is specifically provided, and the first thermal infrared imager thermodetector 12 is installed at the center of the top of the inner wall of the annealing kiln shell 11 at the tail end of the annealing kiln area a. The annealing furnace is characterized in that a second thermal infrared imager slide rail 9 parallel to the movement direction of the glass plate 3 is installed at the bottom of the annealing furnace A, a second thermal infrared imager 6 is arranged on the second thermal infrared imager slide rail 9 in a sliding mode, the second thermal infrared imager 6 is connected with a second driving assembly 7 and driven by the second driving assembly 7 to reciprocate along the slide rail 9, the second driving assembly 7 is connected with an intelligent control system 8, and the second driving assembly 7 is arranged on the slide rail 9.
The second thermal infrared imager slide rail 9 is I-shaped, the second thermal infrared imager slide rail 9 is fixed at the bottom of the annealing kiln shell, the second infrared thermal image temperature measurement 6 and the second driving component 7 are fixedly arranged on a sliding plate, the sliding plate is slidably arranged at the upper part of a sliding rail 9 of the second thermal infrared imager through a clamping groove, the second driving component 7 is connected with a pulley 31 through a gear set 30, the pulley 31 is arranged inside one side of the second thermal infrared imager slide rail 9 in a rolling way, the second driving component 7 is a combination of a motor and a speed reducer, an output shaft of the speed reducer is connected with a gear set 30 for power transmission, the gear set 30 includes a main transmission gear and a secondary transmission gear, the secondary transmission gear is connected with the wheel shaft of the pulley 31, the main transmission gear transmits the power of the motor to the secondary transmission gear, and the secondary transmission gear transmits the power to the pulley 31 to drive the pulley 31 to move. The second driving assembly 7 drives the pulley 31 to move on the second thermal infrared imager slide rail 9, then the movement of the pulley 31 drives the sliding plate on which the second thermal infrared image temperature measurement 6 and the second driving assembly 7 are arranged to move on the second thermal infrared imager slide rail 9, and the specific transmission mode and structure of the second thermal infrared image temperature measurement 6 are shown in fig. 7.
Example 2
The present embodiment further provides a connection structure of an upper temperature regulator connecting member 10 and an upper temperature regulator as shown in fig. 5, wherein the upper portion of the sidewall of the annealing furnace shell 11 is fixedly provided with an upper temperature regulator connecting member 10, the installation direction of which is parallel to the moving direction of the glass plate 3, the upper temperature regulator connecting member 10 comprises upper connecting fixing members 26 fixed on the inner walls of both sides of the annealing furnace shell 11, both ends of the upper temperature regulator 2 are respectively connected with the upper connecting fixing members 26 through T-shaped hangers 25, each upper connecting fixing member 26 is connected with a bevel gear set 23 through the rack side of a gear rack set 24, both ends of the upper temperature regulator 2 are respectively connected with the gear side of the gear rack set 24, two bevel gear sets 23 are respectively connected with a first driving assembly 1 for power transmission, the first driving assembly 1 is a dual output shaft speed reducing motor, the two output shafts are respectively connected with a gear rack group 24 through a bevel gear group 23, so that the upper temperature regulator 2 reciprocates on the upper temperature regulator connecting piece 10 along the movement direction of the glass plate 3 under the driving of the first driving assembly 1, and the first driving assembly 1 is connected with the intelligent control system 8 to be controlled by the intelligent control system.
Example 3
The embodiment provides a lower temperature regulator connecting piece and a lower temperature regulator connecting structure, as shown in fig. 6, the two side walls of the lower part of the annealing kiln shell 11 are respectively and fixedly provided with a lower temperature regulator connecting piece 14 with the installation direction parallel to the movement direction of the glass plate 3, the lower temperature regulator connecting piece 14 comprises two lower temperature regulator connecting and fixing bodies 29 and a transmission shaft 27 connected with a third driving component 16, the two lower temperature regulator connecting and fixing bodies 29 are fixedly arranged on the two side walls of the lower part of the annealing kiln shell 11, the installation direction of the two lower temperature regulator connecting and fixing bodies is parallel to the movement direction of the glass plate 3, the transmission shaft 27 simultaneously penetrates through the two lower temperature regulator connecting and fixing bodies 29 through a bearing, the bearing is arranged in the lower temperature regulator connecting and fixing body 29 along the movement direction of the glass plate 3, the transmission shaft 27 is also provided with a driving chain wheel positioned at the inner side of the lower temperature regulator connecting and fixing body 29, and the other end of the corresponding driving chain wheel is provided with a driven chain wheel, the widening chain 28 is arranged on each group of driving chain wheel and driven chain wheel, two ends of the temperature regulator 4 are respectively fixed on the two groups of widening chains 28, the third driving component 16 is just a combination of a motor and a speed reducer, an output shaft of the speed reducer drives the driving chain wheel to move so as to drive the widening chains 28 to move, the forward and reverse rotation directions of the motor are controlled, the lower temperature regulator 4 reciprocates along the lower temperature regulator connecting piece 14 in the transmission of the widening chains 28 under the driving of the third driving component 16, and the third driving component 16 is connected with the intelligent control system 8 to be controlled by the intelligent control system.
Example 4
The embodiment provides the structural characteristics of the upper temperature regulator 2 and the lower temperature regulator 4, the upper temperature regulator 2 and the lower temperature regulator 4 have the same structure and respectively comprise a rectangular parallelepiped heat-resistant stainless steel square tube shell, because the upper temperature regulator 2 regulates the temperature of the upper surface of the glass plate 3, five cylindrical spray heads 20 which are uniformly distributed are arranged below the shell of the upper temperature regulator 2, the lower temperature regulator 2 regulates the temperature of the lower surface of the glass plate 3, five cylindrical spray heads 20 which are uniformly distributed are arranged above the shell of the lower temperature regulator 4, the five spray heads 20 are uniformly welded outside the upper temperature regulator 2 and the lower temperature regulator 4, five cylindrical air inlet pipes are arranged inside the shells of the upper temperature regulator 2 and the lower temperature regulator 4, five the intake pipe correspond respectively with five shower nozzle wares 20 and be connected, every shower nozzle ware 20 of last temperature regulator 2 and lower temperature regulator 4 switch on with a quadbit four-way reversing valve 18 through the connecting pipe simultaneously, shower nozzle ware 20 spun nitrogen gas passes through the connecting pipe and switches on with quadbit four-way reversing valve 18, five quadbit four-way reversing valve 18 be connected respectively with two different high temperature high pressure nitrogen gas storage tanks of tunnel, by the high temperature high pressure gas air feed of two different tunnels.
The four-position four-way reversing valves 18 are all provided with five four-position four-way reversing valves, each four-position four-way reversing valve respectively controls the sprayer 20 corresponding to the upper temperature regulator 2 and the lower temperature regulator 4, if the five four-position four-way reversing valves 18 are numbered as No. 1, No. 2, No. 3, No. 4 and No. 5, namely, the No. 1 four-position four-way reversing valve 18 is connected with the No. 1 sprayer of the upper temperature regulator 2 and the No. 1 sprayer of the lower temperature regulator 4, the No. 2 four-position four-way reversing valve 18 is connected with the No. 2 sprayer of the upper temperature regulator 2 and the No. 2 sprayer of the lower temperature regulator 4, … …, the No. 5 four-position four-way reversing valve is connected with the No. 5 sprayer of the upper temperature regulator and the No. 5 sprayer of the lower temperature regulator, the No. 1 sprayer of the upper temperature regulator, the No. 2 sprayer, the No. 3 sprayer, the No. 4 sprayer, the No. 5 sprayer and the No. 1 sprayer of the lower temperature regulator, The No. 2 sprayer, the No. 3 sprayer, the No. 4 sprayer and the No. 5 sprayer are symmetrically arranged up and down along the surface of the glass plate 3, gases with different temperatures (100-700 ℃) and different pressures (0.01 MP-0.5 MP) can be sprayed on the lower surface and the lower surface of the glass plate 3 and the wide surface of the glass plate 3 by adjusting the station of the four-position four-way reversing valve 18, the selected high-temperature high-pressure gas is nitrogen, and the control schematic diagram of the nitrogen is shown in figure 3.
In this embodiment, the high-temperature air source a17 is high-temperature high-pressure nitrogen with a temperature of 0.05MP and a temperature of 565 ℃, the high-temperature air source b17 is high-temperature high-pressure nitrogen with a temperature of 0.05MP and a temperature of 570 ℃, the high-temperature air source 17 is preset to be connected with the four-way reversing valve No. 5, and the four-way reversing valve No. 1, 2, 3, and 4 is in a cut-off and closed state. The No. 5 four-position four-way reversing valve 18 is respectively communicated with the No. 5 spray head devices of the upper temperature regulator 2 and the lower temperature regulator 4. The high-temperature nitrogen a (0.05MP, 565 ℃) and the high-temperature nitrogen b (0.05MP, 570 ℃) respectively pass through a No. 5 four-way reversing valve 18 and are conveyed to a No. 5 sprayer 20 of the upper temperature regulator 2 and the lower temperature regulator 4, and the high-temperature nitrogen finally passes through the No. 5 sprayer 20 and is sprayed to the upper surface and the lower surface of the glass plate 3.
Simultaneously every the nozzle opening 22 department of shower nozzle ware 20 all install the warm-pressing sensor 19 that is used for measuring shower nozzle ware blowout gas's pressure and temperature, warm-pressing sensor 19 be connected with intelligent control system 8 electricity, warm-pressing sensor 19 be used for detecting the pressure and the temperature of nozzle opening 22 nitrogen gas, carry out pressure and temperature's correction and control to high temperature air supply 17 output assorted pressure and flow. The height between the sprayer 20 of the upper temperature regulator 2 and the sprayer 20 of the lower temperature regulator 4 and the surface of the glass plate 3 is 50 mm-600 mm. Shower nozzle ware 20 internally mounted universal nozzle 21, as shown in fig. 4, universal nozzle 21 be the ball form, shower nozzle ware 20 inner wall be the ball form with universal nozzle 21 junction, universal nozzle 21's nozzle mouth 22 department be rectangle nozzle or circular nozzle, universal nozzle 21 can realize in shower nozzle ware 20 along shower nozzle ware circular lead 0-180 degree rotation and 0-45 degree rotation. If the abnormal temperature portion on the surface of the glass plate 3 is rectangular and has a small area, the discharge port of the universal nozzle 21 is a rectangular nozzle 22, and the universal nozzle 21 does not rotate in the α - α axis direction in the head unit 20. Since the abnormal temperature region of the surface of the glass plate 3 is located at the eccentric part of the No. 5 head 20 (Y1-Y2, X5-glass side part), the rotation is 15 degrees along the beta-beta axis.
Example 5
The present embodiment provides a method for controlling a warp defect of a glass sheet 3 using the apparatus for controlling a warp defect of a sheet glass as described in the above embodiments, comprising the steps of:
s1, establishing a networked subarea of the 3 surfaces of the glass plate;
s2, a first thermal infrared imager 12 carries out scanning full-panel temperature measurement on the upper surface of a glass plate 3 to be measured, measured data are transmitted to an intelligent control system 8, when the temperature of a certain part of the surface of the glass plate 3 is inconsistent with the annealing temperature of the certain part or inconsistent with the temperature of peripheral glass plates 3, the intelligent control system 8 sends a command to a second driving assembly 7, the second driving assembly 7 is started and drives a second thermal infrared imager 6 to move to a temperature abnormal point of the glass plate 3, the temperature of the lower surface of the glass plate 3 is measured, the measured temperature value of the lower surface of the glass plate 3 is transmitted to the intelligent control system 8, the intelligent control system 8 carries out contrastive analysis on the temperature of the upper surface and the lower surface of the glass plate 3 and the temperature of the surfaces of the glass plate 3 in the width direction to judge whether abnormity exists, the intelligent control system 8 selects PC-ZN 800 of Luoyang Hongyuan company, the first thermal infrared imager and the second thermal infrared imager adopt TP8 of Wuhan Gauda company, the intelligent control system 8 has the functions of displaying, comparing and judging the temperatures of the upper and lower plate surfaces of the glass, the function of positioning the glass plate 3, the functions of controlling the motion of the upper and lower temperature regulators and the second thermal infrared imager, the functions of controlling the pressure and the temperature of the nozzle opening of each nozzle 20 and the function of fault alarm;
s3, judging whether the temperature of the glass plate 3 is abnormal by the intelligent control system 8, determining the temperature difference and the area of the abnormal part, selecting and matching the shape and the size of a nozzle opening 22 of the sprayer 20, the pressure and the flow of sprayed nitrogen and the height parameter of the sprayer 20 from the surface of the glass plate 3, controlling the upper temperature regulator 2 by the intelligent controller 8 through the first driving assembly 1, and controlling the lower temperature regulator 4 to move to the abnormal temperature point of the glass plate 3 by the third driving assembly 16;
s4, the intelligent control system 8 opens a four-position four-way reversing valve 18 by analyzing the temperature difference of the surface of the glass plate 3, sprays high-temperature nitrogen to the part with relatively low surface temperature of the glass plate 3 through a sprayer 20, and sprays low-temperature nitrogen to the part with relatively high surface temperature of the glass plate 3;
and S5, finally realizing uniform temperature of the surface of the glass plate 3, and finishing annealing according to the annealing temperature curve of the glass plate 3.
The method of establishing the networked zones of the 3 sides of the glass sheet is as follows: the moving direction of the glass plate 3 is defined as Y axis, the outer circumference of the 1 st annealing lehr roller 13 at the entrance of the moving direction of the glass plate 3 is set as the starting point of the Y axis, the 1 st annealing lehr roller 13 is Y1, the 2 nd annealing lehr roller is Y2, the 3 rd annealing lehr roller is Y3, … …, the width direction of the glass plate 3 is defined as X axis, the starting point of the X axis is arranged at the left side part of the glass plate 3, and the glass plate 3 is equally divided into six sections of five points along the width direction of the glass plate 3, namely the left side part of the glass plate 3 is X1, the left middle part of the glass plate 3 is X2, the middle line part of the glass plate 3 is X3, the right middle part of the glass plate 3 is X4, and the right side part of the glass plate 3 is X5. The 5 points set on the X axis coincide with the 5 shower positions of the upper and lower thermostats, respectively, as shown in fig. 2.
The method for controlling the temperature of the glass plate 3 by using the control device provided by the invention has the advantages that the abnormal temperature point is found by the first infrared thermal imaging thermometer 12, the temperature is regulated and controlled to be consistent with the surface temperature of the glass plate 3, the temperature requirement of the annealing process of the glass plate 3 is met, the time for use is 3.5min, the device is accurate and rapid in response, the warping defect of the glass is solved in a budding state through a series of operations, and the yield of glass products is improved. A control device for the warping defect of plate glass can be installed in the A area of an annealing kiln, and can also be installed in the B area and the C area of the annealing kiln. .
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the invention, it is intended to cover all modifications within the scope of the invention as claimed.
Claims (10)
1. A control device for the warpage defect of plate glass is arranged on the ground (15) of an annealing kiln in the annealing kiln, the annealing kiln comprises an annealing kiln shell (11), two rows of symmetrically arranged annealing kiln stand columns (5) are arranged outside the annealing kiln shell (11) in parallel, each row of the annealing kiln stand columns (5) are sequentially connected through a support rod, the tops of two corresponding rows of the annealing kiln stand columns (5) are respectively connected with an annealing kiln roller shaft, the annealing kiln roller shaft is provided with an annealing kiln roller (13), a glass plate (3) to be detected is placed above the annealing kiln roller (13), the control device is characterized in that,
the control device comprises a first infrared thermal imager (12) fixedly arranged above the annealing kiln rollers (13) and used for measuring the temperature of the upper surface of the glass plate (3), and an upper temperature regulator (2) slidably arranged above the annealing kiln rollers (13) and used for regulating the temperature of the upper surface of the glass plate (3); the device comprises a second thermal infrared imager (6) which is arranged below an annealing kiln roller (13) in a sliding manner and used for measuring the lower surface temperature of a glass plate (3), and a lower temperature regulator (4) which is arranged below the annealing kiln roller (13) in a sliding manner and used for regulating the lower surface temperature of the glass plate (3), wherein the first thermal infrared imager (12), the upper temperature regulator (2), the second thermal infrared imager (6) and the lower temperature regulator (4) are all electrically connected with an intelligent control system (8).
2. The device for controlling the warping defect of the flat glass as claimed in claim 1, wherein the first thermal infrared imager thermometer (12) is installed at the top center of the inner wall of the annealing furnace shell (11) at the end of the A area of the annealing furnace; the annealing furnace is characterized in that a second thermal infrared imager sliding rail (9) parallel to the movement direction of the glass plate (3) is installed at the bottom of the annealing furnace area A, a second thermal infrared imager thermometer (6) is arranged on the second thermal infrared imager sliding rail (9) in a sliding mode, the second thermal infrared thermometer (6) is connected with a second driving assembly (7) and moves back and forth along the sliding rail (9) under the driving of the second driving assembly (7), the second driving assembly (7) is connected with an intelligent control system (8), and the second driving assembly (7) is arranged on the sliding rail (9).
3. The apparatus for controlling warp defects in sheet glass according to claim 2, the second thermal infrared imager slide rail (9) is I-shaped, the second thermal infrared imager slide rail (9) is fixed at the bottom of the annealing kiln shell, the second infrared thermal image temperature measurement (6) and the second driving component (7) are fixedly arranged on a sliding plate, the sliding plate is slidably arranged on the upper part of a sliding rail (9) of a second thermal infrared imager through a clamping groove, a second driving component (7) is connected with a pulley (31) through a gear set (30), the pulley (31) is arranged inside one side of the second thermal infrared imager temperature measuring instrument slide rail (8) in a rolling way, the second driving component drives the pulley (31) to move on the second thermal infrared imager temperature measuring instrument slide rail (9), meanwhile, the pulley (31) drives the second thermal infrared image temperature measurement (6) to move on a second thermal infrared image temperature measurement instrument slide rail (9).
4. The device for controlling the warping defect of the sheet glass according to claim 1, wherein the upper portion of the side wall of the annealing lehr housing (11) is fixedly provided with an upper temperature regulator connecting member (10) having a mounting direction parallel to the moving direction of the glass sheet (3), the upper temperature regulator connecting member (10) comprises upper connecting fixing members (26) fixed to the inner walls of both sides of the annealing lehr housing (11), both ends of the upper temperature regulator (2) are respectively connected to the upper connecting fixing members (26) through T-shaped hangers (25), each upper connecting fixing member (26) is connected to a bevel gear set (23) through the rack side of a rack and pinion set (24), both ends of the upper temperature regulator (2) are respectively connected to the gear side of the rack and pinion set (24), and the two bevel gear sets (23) are respectively connected to the first driving assembly (1) for power transmission, the upper temperature regulator (2) is driven by the first driving assembly (1) to reciprocate along the upper temperature regulator connecting piece (10), and the first driving assembly (1) is connected with the intelligent control system (8).
5. The apparatus for controlling a warp defect of a sheet glass according to claim 1, wherein lower thermostat connecting members (14) having an installation direction parallel to a moving direction of the glass sheet (3) are fixedly provided on both side walls of a lower portion of the annealing lehr housing (11), respectively, the lower thermostat connecting members (14) comprise two lower thermostat connecting fixing bodies (29) fixedly provided on both side walls of the lower portion of the annealing lehr housing (11) and having an installation direction parallel to the moving direction of the glass sheet (3), and a transmission shaft (27) connected to the third driving unit (16), the transmission shaft (27) penetrates through the two lower thermostat connecting fixing bodies (29) simultaneously through bearings, the bearings are provided in the lower thermostat connecting fixing bodies (29) along the moving direction of the glass sheet (3), the transmission shaft (27) is further provided with a driving sprocket positioned inside the lower thermostat connecting fixing bodies (29), the other end of the corresponding driving chain wheel is provided with a driven chain wheel, each group of driving chain wheels and driven chain wheels are provided with a widening chain (28), two ends of the temperature regulator (4) are respectively fixed on the two groups of widening chains (28), the lower temperature regulator (4) is driven by a third driving component (16) to reciprocate along a lower temperature regulator connecting piece (14), and the third driving component (16) is connected with an intelligent control system (8).
6. The apparatus for controlling warp defects in sheet glass according to claim 4 or 5, the upper temperature regulator (2) and the lower temperature regulator (4) have the same structure and both comprise rectangular heat-resistant stainless steel square tube shells, five cylindrical sprayer devices (20) which are uniformly distributed are arranged below the shell of the upper temperature regulator (2), five paths of five sprayer devices (20) which are uniformly distributed are arranged above the shell of the lower temperature regulator (4), five cylindrical air inlet pipes are arranged in the shell, the five air inlet pipes are respectively and correspondingly connected with five sprayer devices (20), each sprayer (20) of the upper temperature regulator (2) and each sprayer of the lower temperature regulator (4) are simultaneously communicated with a four-position four-way reversing valve (18) through connecting pipes, and five four-position four-way reversing valves (18) are respectively connected with two different high-temperature high-pressure nitrogen storage tanks.
7. The device for controlling the warping defect of the flat glass as claimed in claim 6, wherein the nozzle opening (22) of each sprayer (20) is provided with a temperature and pressure sensor (19) for measuring the pressure and temperature of the gas sprayed by the sprayer, the temperature and pressure sensor (19) is electrically connected with the intelligent control system (8), and the heights of the sprayers (20) of the upper temperature regulator (2) and the lower temperature regulator (4) from the glass plate (3) are 50 mm-600 mm.
8. The device for controlling the warpage defect of the sheet glass according to claim 7, wherein the universal nozzles (21) are installed inside the sprayer (20), the universal nozzles (21) are spherical, the connection part of the inner wall of the sprayer (20) and the universal nozzles (21) is spherical, the nozzle opening (22) of the universal nozzles (21) is a rectangular nozzle or a circular nozzle, and the universal nozzles (21) can rotate at 0-180 degrees and at 0-45 degrees inside the sprayer (20) along the circular center line of the sprayer.
9. A method for controlling a warp defect of a glass sheet using the apparatus for controlling a warp defect of a sheet glass according to any of the preceding claims, comprising the steps of:
s1, establishing a networked partition of the surface of a glass plate (3);
s2, the first thermal infrared imager (12) scans the upper surface of the glass plate (3) to be measured to measure the temperature of the whole plate surface, the measured data is transmitted to the intelligent control system (8), when the temperature of a certain part of the surface of the glass plate (3) is not consistent with the annealing temperature of the certain part or the temperature of the peripheral glass plate (3), the intelligent control system (8) sends a command to the second driving component (7), the second driving component (7) is started and drives the second thermal infrared imager thermodetector (6) to move to the abnormal temperature point of the glass plate (3), the temperature of the lower surface of the glass plate (3) is measured, the measured temperature value of the lower surface of the glass plate (3) is transmitted to an intelligent control system (8), and the intelligent control system (8) compares and analyzes the temperature of the upper surface and the lower surface of the glass plate (3) and the temperature of each plate surface in the width direction of the glass plate (3) to judge whether abnormity exists or not;
s3, judging whether the temperature of the glass plate (3) is abnormal by the intelligent control system (8), determining the temperature difference and the area of the abnormal part, selecting and matching the shape and the size of a nozzle opening (22) of the sprayer (20), the pressure and the flow of sprayed nitrogen and the height parameter of the sprayer (20) away from the glass plate (3), controlling the upper temperature regulator (2) by the intelligent controller (8) through the first driving assembly (1), and controlling the lower temperature regulator (4) to move to the temperature abnormal point of the glass plate (3) by the third driving assembly (16);
s4, the intelligent control system (8) opens the four-position four-way reversing valves (18) with the corresponding number by analyzing the temperature difference of the surface of the glass plate (3), sprays high-temperature nitrogen to the part with low surface temperature of the glass plate (3) through the sprayer (20), and sprays low-temperature nitrogen to the part with high surface temperature of the glass plate (3);
and S5, finally realizing uniform temperature of the surface of the glass plate (3), and finishing annealing according to the annealing temperature curve of the glass plate (3).
10. The method for controlling warp defects in sheet glass according to claim 9,
the method for establishing the networked subareas of the surface of the glass plate (3) in the step S1 is as follows: the moving direction of the glass plate (3) is defined as Y axis, the outer circumference of the first annealing furnace roller (13) at the entrance of the moving direction of the glass plate (3) is set as the starting point of the Y axis, the first annealing furnace roller (13) is Y1, the second annealing furnace roller is Y2, the third annealing furnace roller is Y3, … …, the width direction of the glass plate (3) is defined as X axis, the starting point of the X axis is arranged at the left part of the glass plate (3), the glass plate (3) is averagely divided into six sections of five points along the width direction of the glass plate (3), namely, the left side part of the glass plate (3) is X1, the left middle part of the glass plate (3) is X2, the middle line part of the glass plate (3) is X3, the right middle part of the glass plate (3) is X4, the right side part of the glass plate (3) is X5, and the five points arranged at the X axis are respectively consistent with the positions of five sprayers of the upper and lower temperature regulators.
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