CN100487392C - Planar glass on-line weighing method and on-line weighing system - Google Patents
Planar glass on-line weighing method and on-line weighing system Download PDFInfo
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- CN100487392C CN100487392C CNB2006100175016A CN200610017501A CN100487392C CN 100487392 C CN100487392 C CN 100487392C CN B2006100175016 A CNB2006100175016 A CN B2006100175016A CN 200610017501 A CN200610017501 A CN 200610017501A CN 100487392 C CN100487392 C CN 100487392C
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Abstract
A method for on-line weighing sheet glass includes weighing sheet glass in vertical position held by air blowing unit with weighing unit and sending weighed data to computer, processing received data and comparing it with preset calibration weight value for obtaining a comparison D-value, storing all data in databank, judging whether weighed data is off-normal or not by computer according to result in databank for realizing purpose of real-time monitoring and data feedback as well as data regulation.
Description
Technical field
The present invention relates to be used in a kind of continuous production the method for weighing materials online and the device of sheet glass, specifically, method that the present invention relates to and device can be realized the continual weight measurement and the analyzing and processing of whole glass plates in the sheet glass production.
Background technology
Along with the maximization of liquid crystal display device (LCD), become bigger wideer as the glass substrate size of its carrier, the glass substrate size of G7 has reached width 2150mm, length 1800mm at present.Simultaneously, since the thickness requirement of the significant surface of glass substrate part at 0.6mm ± 30 μ m, so it is necessary aborning the thickness of glass substrate accurately being controlled.On the glass substrate of same size, the variation of thickness of glass substrate must be reflected on the weight change of glass substrate.
In the production of liquid crystal glass base, as will accurately measuring the thickness that the monolithic glass substrate comprises the edge, just need get multiple spot and measure glass baseplate surface, cause workload to increase measuring equipment complexity, work efficiency step-down like this.On the contrary, as adopting the thickness that comes the indirect determination glass substrate by the method for measuring every glass substrate weight, the variable quantity of glass substrate weight is converted into the variable quantity of thickness of glass substrate, whether the net thickness of judging glass substrate has indirectly reached in 0.6mm ± 30 μ m, will become simple to the accurate control of thickness of glass substrate since like this.
Summary of the invention
The object of the present invention is to provide a kind of method of weighing materials online of sheet glass, judge by the weight of weighing sheet glass whether the thickness of sheet glass satisfies production requirement, reach with the accurate control of simpler method realization to thickness of glass substrate.
The present invention also aims to provide a kind of online weighing system of above-mentioned method of weighing materials online and liftable weighing device of in this weighing system, using realized.
For achieving the above object, the present invention adopts following technical scheme: a kind of method of weighing materials online of sheet glass, it is after the online weighing device detects the sheet glass that operation transmits in the past automatically, the weighing device work of weighing automatically, this moment, weighing device was to after taking by weighing weight data at the glass substrate that keeps vertical state under the blowning installation effect, weight data is exported to coupled computer system, computer system compares to the data result real-time storage after handling and with itself and predefined standard weight value, draw a relatively difference, the total data that to handle the back gained simultaneously in time deposits database in, and computer system judges according to the result in the database whether weighing data is unusual subsequently.
When computer system judges that according to the result in the database weight data is unusual, then send instantaneous alerting signal, and the every state parameter of weighing device is detected or intervenes, the data result after computer system will be stored feeds back in real time, exports and shows.
A kind of online weighing system of said method that realizes provided by the invention comprises:
The clamping device that can move horizontally, this clamping device are used for clamping sheet glass and can move to weighing station by preceding operation under the control of external propulsion system, discharge that dull and stereotyped sheet glass is weighed and move to subsequent processing finishing the back clamping glass of weighing;
Liftable weighing device, this weighing device have one by the liftable electronic scale that props up device driving lifting, are used for the sheet glass that arrives weighing station is weighed;
Blowning installation is used to connect external air source and blows pressure-air to the sheet glass both sides that enter weighing station, guarantees that glass remains vertical state at weighing station;
The computer system that is connected with electronic scale is used to receive, the data and weighing system controlled automatically of weighing of store electrons weighing apparatus.The raw data that computer processing system will accept is carried out analyzing and processing and is drawn accurate weight data, and itself and predefined standard weights compared, draw a relatively difference, the total data that to handle the back gained simultaneously in time deposits database in, computer system is according to the result in the database subsequently, judge whether weighing data is unusual, as unusual computer system takes place send instantaneous alerting signal, and the every state parameter of weighing device detected or intervene, can select manual intervention therebetween; Computer system also can be fed back the data result after the storage, be exported and show in real time.Managerial personnel also can transfer the data result of any time in the Computer Database at any time.
Detecting unit comprises the clamping device position detection unit, is used to detect clamping device and whether arrives weighing station; Clamping device open and-shut mode detecting unit is used to detect opening and make-position of clamping device, props up the setting position detecting unit, is used to detect prop up the upper and the next of device; The blow gas pressure detecting unit is used for detected gas pressure.Specifically, the pick-up unit that the present invention relates to is used to finish following function: put in place the detection, blow gas pressure of detection when sheet glass is transported to the weighing device position and location, clamping device closed action detects, props up the device knee-action position probing that puts in place.After the detection and localization switch detects the sheet glass that operation transports, deceleration buffer and accurate location by this this sheet glass of signal controlling, make this sheet glass rest on the top of weighing device exactly, in the time of the stop motion of control sheet glass, also send a beginning request signal, make it enter duty automatically to weighing device; Clamping device action detections that put in place, it is finished and detects clamping device and open and make-position, the reliability the when accuracy of the data that guarantee to weigh and sheet glass conveying; The stability that blow gas pressure detects blowning installation work monitors, the accidental injury sheet glass when preventing blowning installation work; The knee-action position that the props up device detection that puts in place is to confirm propping up the next stand-by operation position of movement device and upper working position, to prevent because of propping up the sheet glass damage that the movement device reason causes;
The present invention also comprises an input-output unit, is used for sensor signal is imported the signal of computing machine and the above device of output control.
Described clamping device comprises that two middle parts are by the hinged support of rotating pin, between the inboard, upper end of two stands, be provided with spring, the inboard, lower end of two stands is relatively set with the upper end that flexible material is used for clamping sheet glass, the supporting member of clamping device is connected with the rotating pin two ends, stressed fulcrum arrangement when the outside of a support is provided with a clamping device and opens therein, be provided with cylinder at least one support outside, the right end position place of corresponding supporting member when the clamping device position detection unit is arranged on clamping device and is in weighing station, clamping device open and-shut mode sensor is formed by being mounted in it sensing chip and two detector switches that are arranged at the sensing chip both sides respectively on the support.The clamping device that the present invention relates to is positioned at the top of sheet glass, to a plurality of positions, sheet glass top edge both sides carry out clamping and and sheet glass be fed forward synchronously.When sheet glass is transported to after weighing positions stops, blowning installation start and pallet rise put in place after, clamping device just is opened, this moment, sheet glass remained on vertical state under the acting in conjunction of pallet and blowning installation.After the data processing of weighing is finished, the clamping device closure, pallet descends, and after blowning installation also stopped to blow, the clamping device band sheet glass and is shifted to next station.
Described liftable weighing device comprises an electronic scale, but electronic scale is arranged on propping up on the device of oscilaltion, electronic scale is provided with pallet, prop up device and comprise a web joint, the lifting leg is set below the web joint, the slide block of this lifting leg bottom slides and is arranged in the guide rail that is fixed on the rail brackets, be provided with the cylinder that is installed on the cylinder support below the web joint, propping up the setting position detecting unit and form by upper, the next detector switch that is arranged on the sensing chip on the lifting leg and be arranged on the cylinder support.Prop up device and drive community that electronic scale, pallet form in that two positions---working position and position of readiness move.Prop up the drive power source such as also can adopting motor that moves up and down of device.Prop up device when being positioned at position of readiness, it is in the lowest order of stroke up and down, can not have influence on the conveying backward that the clamping device band sheet glass; Prop up device when being positioned at the working position, it is in the highest point of stroke up and down, and this moment, pallet just slightly contacted with sheet glass, realized the work of weighing of electronic scale.
Have V-shaped groove at tray upper surface and sheet glass contact position, the V-shaped groove surface is provided with padded coaming.During pallet work, the V-shaped groove of its upper surface contacts with sheet glass, and sheet glass is supported and locatees, and padded coaming plays the purpose of protection sheet glass.
Described blowning installation is a pair of or a pair of above over against the porous blowning installation that is provided with, and the porous blowning installation is positioned at the sheet glass both sides when clamping device arrives weighing station.
The liftable weighing device that is used in the above-mentioned online weighing system provided by the invention comprises an electronic scale, but electronic scale is arranged on propping up on the device of oscilaltion, electronic scale is provided with pallet, prop up device and comprise a web joint, the lifting leg is set below the web joint, the slide block of this lifting leg bottom slides and is arranged in the guide rail that is fixed on the rail brackets, be provided with the cylinder that is installed on the cylinder support below the web joint, propping up the setting position detecting unit by being arranged on the sensing chip on the lifting leg and being arranged on upper on the cylinder support, the next detector switch is formed.
Have V-shaped groove in pallet upper surface and sheet glass contact position, the V-shaped groove surface is provided with padded coaming.
The present invention adopt weighing device continuously, automatically to carrying out real-time weight measurement at line products, weighing device is exported to measurement result computer system and is handled the data of weighing in real time by computer system, and by computer system stores data processed result and can feeding back in real time or show, whether the thickness of judging sheet glass by the weight of weighing sheet glass satisfies production requirement, reaches with the accurate control of simpler method realization to thickness of glass substrate.The present invention can be according to the abnormal data that draws after handling, and the every index to the duty of weighing device is detected and warning in time automatically.
Description of drawings
Fig. 1 is the general illustration of online weighing system.
Fig. 2 is the front view of clamping device.
Fig. 3 is the side view of clamping device.
Fig. 4 is the weighing device front view.
Fig. 5 is the weighing device side view.
Fig. 6 is the electrical control synoptic diagram of the online weighing system of sheet glass.
Fig. 7 is the method for weighing materials online process flow diagram of sheet glass.
Embodiment
As shown in Figure 1, the online weighing system comprises a clamping device that can move horizontally 10, this clamping device is used for clamping sheet glass, sheet glass 1 in clamping device 10 clampings under the control of external propulsion system and shown in big arrow among the figure, carry from left to right, sheet glass is moved to weighing station (as centre position among the figure) by last operation (as leftward position among the figure).Two position detecting switchs 6 are arranged on the top of liftable weighing station, wherein Zuo Ce position detecting switch 6 is a base-plate buffering position detector switch, the position detecting switch 6 on right side is the substrate detector switch that puts in place, when clamping device 10 right-hand members arrive first position detecting switch 6, detector switch is presented a signal by input-output unit to computer system 200, the external propulsion system of computer system control this moment make the clamping device deceleration buffer, when clamping device 10 right-hand members arrive second position detecting switch 6, detector switch is presented a signal by input-output unit again to computer system 200, the external propulsion system of computer system control this moment make clamping device stop at this position, and this position is exactly a weighing station.By the detection of detector switch 6 and the control of computer system, make clamping device 10 accurately stop to be positioned at the working position of blowning installation 101, weighing device 100.After blowning installation 101 air blowing beginnings this moment, weighing device 100 risings, clamping device 10 are opened and are discharged dull and stereotyped sheet glass, give coupled computer system 200 by the weight of meausring apparatus weighing sheet glass and with result transmission, with data output 205 or feed back 210, finish the whole processing procedure of weighing after handling by 200 again.After sheet glass 1 was weighed and finished, each position of weighing system resetted, and clamping device 10 clampings sheet glass 1 and left weighing station and continue to carry to subsequent processing.
Blowning installation 101 is connected with external air source, is a pair of or a pair of above over against the porous blowning installation that is provided with, and the porous blowning installation is positioned at the sheet glass both sides when clamping device arrives weighing station.After sheet glass arrives weighing station, the air blowing solenoid valve of computer system control external air source is opened, the porous blowning installation blows pressure-air to the sheet glass both sides that enter weighing station, guarantees that glass remains vertical state at weighing station, improves measuring accuracy.
As Fig. 2, shown in Figure 3, clamping device comprises that two middle parts are by cross connection part 25 and rotating pin 30 hinged supports 15, between the inboard, upper end of two stands, be provided with spring 20, the inboard, lower end of two stands is relatively set with flexible material 35, the upper end that is used for clamping sheet glass prevents that sheet glass from sustaining damage in course of conveying.The supporting member 5 of clamping device is connected with rotating pin 30 two ends, stressed fulcrum arrangement 70 when the outside of a support 15 is provided with a clamping device and opens therein, its effect one is to play supporting role in a side when clamping device is opened, and the another one effect is to play the guiding role when clamping device moves.Be respectively equipped with cylinder 60 in the outside of two supports 15.The right end position place of corresponding supporting member 5 when clamping device position detecting switch 6 is arranged on clamping device and is in weighing station, detector switch 6 can be near switch, also can be optocoupler or other sensing devices.Clamping device open and-shut mode sensor is formed by being mounted in it sensing chip 16 and two detector switches 17 that are arranged at the sensing chip both sides respectively on the support 15, and sensing chip 16 can be a sheet metal, and correspondingly detector switch 17 is near switch; Sensing chip 16 and detector switch 17 also can be that other optocoupler sensor spares are as Hall element.
By Fig. 2～Fig. 3 as can be seen, when clamping device 10 moved at clamping sheet glass 1, flexible material 35 was given the tension force generation of the holding force of sheet glass 1 by spring 20.The open and close position of clamping device 10 is realized by a sensing chip 16 that detects on 15 by two detector switches 17.When clamping device 10 need be opened, first cylinder bar by right cylinder 60 stretches out and imposes on right support 15 1 pressure, the cylinder bar of left hand cylinder 60 stretches out and imposes on left socle 15 1 pressure immediately, simultaneously because guided bearing 70 positions are motionless, final clamping device 10 is opened under guiding is held concurrently the pressure effect of the supporting power of supporting 70 and cylinder 60, realizes the steady disengaging of sheet glass.Equally, in case the withdrawal of the cylinder bar of cylinder 60, its pressure that imposes on support 15 disappears, and two supports 15 are closed under the spring force effect, realize the clamping once more to sheet glass.
As Fig. 4, shown in Figure 5, described liftable weighing device 100 comprises that is arranged on a liftable electronic scale 120 that props up on the device, prop up device and comprise a web joint 150, electronic scale 120 with display screen 122 is arranged on the web joint 150, is connected with computer system by data line 125.Electronic scale 120 is provided with pallet 110, lifting leg 136 is set below the web joint 150, the slide block 133 of lifting leg 136 bottoms slides and is arranged in the guide rail 132 that is fixed on the rail brackets 130, be provided with the cylinder 140 that is installed on the cylinder support 145 below the web joint 150, have V-shaped groove in pallet 110 upper surfaces and sheet glass contact position, the V-shaped groove surface is provided with padded coaming 112.Propping up the setting position detecting unit forms by being arranged on sensing chip 137 on the lifting leg and upper, the next detector switch 138 that is arranged on the cylinder support.Blowning installation 101 is aimed on the side of the sheet glass of weighing and is had a lot of equally distributed air blowing apertures 105 among the figure, in blowning installation 101 air inlets place press detection sensor 102 is installed, tensimeter 103 is equipped with in the end, and the draft tube 104 of blowning installation 101 is connected with external air source.
By Fig. 4, Fig. 5 as can be seen, during weighing device 100 work, at first blow in 105 on blowning installation 101 sides, the cylinder 140 cylinder bars of installing on the support 145 reach the working position of weighing then, be accompanied by stretching out of cylinder 140 cylinder bars, web member 150 moves up under the cylinder force effect, the electronic scale 120 that web member 150 drives on it, pallet 110, lifting leg 136 under it, be fixed on the slide block 133 on the support 136, the community of compositions such as inductive switching sheet 137 moves up together and stops when arriving with sheet glass 1 contact position, stop position is detected by detector switch 138, this moment, clamping device 10 was opened, sheet glass 1 breaks away from clamping device, and weighing device is started working.After sheet glass 1 breaks away from clamping device, keep vertical state under the acting in conjunction of pallet 110 and blowning installation 101, under this state, because sheet glass is not subjected to gravity, lift of gas other power effect in addition, its data of weighing are more accurate.In case electronic scale 120 data processing finish, clamping device is closed once more, cylinder 140 withdrawals, its drive web member 150, electronic scale 120, pallet 110, lifting leg 136, slide block 133, inductive switching sheet 137 etc. are return jointly and are treated the seat in the plane, this position probing is finished by the detector switch 138 of below, blowning installation 101 stops to blow, and sheet glass 1 is held device 10 and removes, and next working cycle begins.
Figure 6 shows that the electrical control synoptic diagram of the online weighing system of sheet glass, have data line to carry out communication between electronic scales and the computer system, and computer system is connected by data line with input-output unit.As shown in Figure 6, input-output unit can adopt Programmable Logic Controller PLC, in PLC inside digital input module and analog input module are arranged, clamping device buffering position detector switch, the clamping device detector switch that puts in place, the clamping device Closing Switch, clamping device is opened switch, prop up bit switch on the device, prop up bit switch under the device, in the central processing unit of the signal of insufflation pressure sensor by load module input PLC, central processing unit is connected with computer system by the communication interface of PLC again, judge the state of these signals by computer system, after the judgment processing control signal corresponding is exported via the output module of PLC, corresponding device thereof is controlled automatically, and these controls comprise the control to the clamping device cylinder solenoid valve, to propping up the control of device cylinder solenoid valve, to control of the external source of the gas solenoid valve of blowing etc.In addition, Programmable Logic Controller PLC output alarm signal also.
Fig. 7 is the process flow diagram of sheet glass method of weighing materials online.After the online weighing system devoted oneself to work, detector switch was started working, in case after detecting the sheet glass of arrival, the online weighing device will be worked in the following order successively: blowning installation 101 is blown; Cylinder 140 rises; Switch detect cylinder rise put in place after, anchor clamps 10 are opened, otherwise system proceeds next carriage action and report to the police, after twice warning of accumulative total, system changes warning emergency treatment program automatically over to; After grip device 10 was opened, switch detects the back weighing measurement to begin, otherwise system proceeds once more opening action and reports to the police, and after twice warning of accumulative total, system changes warning emergency treatment program automatically over to.
Weighing device will record data A1 and send computer system to.The weight data that computer system processor transmits draws True Data A, if during handle overtimely, system will report to the police and enter warning emergency treatment program; Subsequently A and predefined standard weights W are compared, drawing a comparison difference H is H=A-W, data A and comparative result after will handling simultaneously deposit database in, can send the next sheet glass of request to Weighing system in the simultaneous computer system that carries out this step and prepare the signal that weighing begins, the purpose of carrying out this signal is before the work of weighing of preparing to carry out next time, successively carry out anchor clamps closed action, carriage down maneuver, stop the action etc. of blowing, finally finish this time actuation cycle of weighing; Computer system is called the data of respectively organizing after the storage again, and feedback management personnel or demonstration output in real time, emphasis is differentiated the difference H that draws simultaneously, item showing as-5%＜H/W＜5% does not need these data are paid close attention to, otherwise these data are paid close attention to regard to needing, the emphasis focused data is carried out abnormal data to be handled, when showing or feed back, adopt color, sound, methods such as literal are pointed out, abnormal data is handled simultaneously also needs computer system reading each operating state data of weighing system, slave unit self is looked for reason earlier as much as possible, if the every working index of equipment is normal, this is that managerial personnel just need the data of paying close attention to according to feedback, in time the problem that occurs in producing is adjusted.
Claims (7)
1, a kind of method of weighing materials online of sheet glass, it is characterized in that: after the online weighing device detects the sheet glass that operation transmits in the past automatically, the weighing device work of weighing automatically, this moment, weighing device was to after taking by weighing weight data at the glass substrate that keeps vertical state under the blowning installation effect, weight data is exported to coupled computer system, computer system compares to the data result real-time storage after handling and with itself and predefined standard weight value, draw a relatively difference, the total data that to handle the back gained simultaneously in time deposits database in, and computer system judges according to the result in the database whether weighing data is unusual subsequently.
2, method of weighing materials online as claimed in claim 1, it is characterized in that, when computer system judges that according to the result in the database weight data is unusual, then send instantaneous alerting signal, and the every state parameter of weighing device detected or intervene, the data result after computer system will be stored feeds back in real time, exports and shows.
3, a kind of online weighing system that realizes the described method of claim 1 is characterized in that it comprises:
The clamping device that can move horizontally, this clamping device are used for clamping sheet glass and can move to weighing station by preceding operation under the control of external propulsion system, discharge that sheet glass is weighed and move to subsequent processing finishing the back clamping glass of weighing;
Liftable weighing device, this weighing device have one by the liftable electronic scale that props up device driving lifting, are used for the sheet glass that arrives weighing station is weighed;
Blowning installation is used to connect external air source and blows pressure-air to the sheet glass both sides that enter weighing station, guarantees that glass remains vertical state at weighing station;
The computer system that is connected with electronic scale is used to receive, the data and itself and predefined standard weight value compared drawing the comparison difference of weighing of store electrons weighing apparatus, and weighing system is controlled automatically;
Detecting unit comprises the clamping device position detection unit, is used to detect clamping device and whether arrives weighing station; Clamping device open and-shut mode detecting unit is used to detect opening and make-position of clamping device, props up the setting position detecting unit, is used to detect prop up the upper and the next of device; The blow gas pressure detecting unit is used for detected gas pressure;
Input-output unit is used for the detection signal input computing machine of detecting unit and the signal of the above device of output control.
4, online weighing as claimed in claim 3 system, it is characterized in that, described clamping device comprises that two middle parts are by the hinged support of rotating pin, between the inboard, upper end of two stands, be provided with spring, the inboard, lower end of two stands is relatively set with the upper end that flexible material is used for clamping sheet glass, the supporting member of clamping device is connected with the rotating pin two ends, stressed fulcrum arrangement when the outside of a support is provided with a clamping device and opens therein, be provided with cylinder at least one support outside, the right end position place of corresponding supporting member when the clamping device position detection unit is arranged on clamping device and is in weighing station, described clamping device open and-shut mode detecting unit is by being mounted in it sensing chip and two the clamping device open and-shut mode sensors that the detector switch that is arranged at the sensing chip both sides is respectively formed on the support.
5, as claim 3 or 4 described online weighing systems, it is characterized in that, described liftable weighing device comprises an electronic scale, but electronic scale is arranged on propping up on the device of oscilaltion, electronic scale is provided with pallet, prop up device and comprise a web joint, the lifting leg is set below the web joint, the slide block of this lifting leg bottom slides and is arranged in the guide rail that is fixed on the rail brackets, be provided with the cylinder that is installed on the cylinder support below the web joint, propping up the setting position detecting unit by being arranged on the sensing chip on the lifting leg and being arranged on upper on the cylinder support, the next detector switch is formed.
6, online weighing as claimed in claim 5 system is characterized in that have V-shaped groove in pallet upper surface and sheet glass contact position, the V-shaped groove surface is provided with padded coaming.
As claim 3 or 4 described online weighing systems, it is characterized in that 7, blowning installation is a pair of or a pair of above over against the porous blowning installation that is provided with, the porous blowning installation is positioned at the sheet glass both sides when clamping device arrives weighing station.
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| CNB2006100175016A CN100487392C (en) | 2006-03-06 | 2006-03-06 | Planar glass on-line weighing method and on-line weighing system |
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| CNB2006100175016A CN100487392C (en) | 2006-03-06 | 2006-03-06 | Planar glass on-line weighing method and on-line weighing system |
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| CN1818572A CN1818572A (en) | 2006-08-16 |
| CN100487392C true CN100487392C (en) | 2009-05-13 |
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| CN111693126A (en) * | 2020-06-22 | 2020-09-22 | 中机中联工程有限公司 | Control method of online weighing device with identification system |
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