CN114634294A - Automatic adjusting method and system for thickness of substrate glass - Google Patents
Automatic adjusting method and system for thickness of substrate glass Download PDFInfo
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Abstract
The invention provides a method and a system for automatically adjusting the thickness of substrate glass, which can realize the automatic adjustment of the thickness of the glass in the production process, reduce the error caused by manual adjustment, improve the adjustment precision and the adjustment efficiency and ensure the yield of the substrate glass in a production line. The method comprises the following steps: s1, collecting the thickness of the substrate glass; s2, calculating the thickness deviation of the substrate glass, wherein if the deviation value is not greater than the set threshold value of the glass thickness, the thickness of the substrate glass meets the production requirement, and the thickness of the substrate glass is not adjusted; if the deviation value is larger than the set threshold value of the glass thickness, the next step is carried out; and S3, calculating the traction speed of the traction roller or the air volume of the thickness air pipe as a correction signal to automatically adjust the thickness of the substrate glass.
Description
Technical Field
The invention relates to the technical field of substrate glass manufacturing, in particular to a method and a system for automatically adjusting the thickness of substrate glass.
Background
The substrate glass is one of the important raw materials for forming the liquid crystal panel, the influence on the performance of the panel product is very large, and the indexes of the panel finished product, such as resolution, transmittance, thickness, weight, visual angle and the like, are closely related to the quality of the adopted substrate glass.
In the substrate glass production process, the thickness and the uniformity of the thickness are one of the key factors for controlling the quality of the product, and therefore, the thickness and the uniformity of the thickness are the key techniques that must be commonly used in the production process. However, in the normal production process of the substrate glass, due to the variation of the channel extraction amount, the temperature of the glass liquid and the surrounding environment of the muffle furnace, the thickness of the base glass and the uniformity of the thickness can be directly and indirectly influenced, and thus the quality of the substrate glass product is influenced.
At present, the main method for adjusting the thickness and the thickness uniformity of the substrate glass is to manually measure the thickness of the off-line substrate glass and manually perform exploratory adjustment on the speed and the thickness air volume of the traction roller according to thickness data and experience, however, in the manual adjustment process, the speed and the thickness air volume of the traction roller are adjusted by large errors due to the difference of artificial subjective factors and manual adjustment, and meanwhile, the manual adjustment has time lag, so that the yield of the substrate glass of a production line is severely limited.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method and a system for automatically adjusting the thickness of substrate glass, which can realize the automatic adjustment of the thickness of the glass in the production process, reduce the error caused by manual adjustment, improve the adjustment precision and the adjustment efficiency and ensure the yield of the substrate glass in a production line.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for automatically adjusting the thickness of substrate glass comprises the following steps:
s1, collecting the thickness of the substrate glass;
s2, calculating the thickness deviation of the substrate glass,
if the deviation value is not greater than the set threshold value of the glass thickness, the thickness of the substrate glass meets the production requirement, and the thickness of the substrate glass is not adjusted;
if the deviation value is larger than the set threshold value of the glass thickness, carrying out the next step;
and S3, calculating the traction speed of the traction roller or the air volume of the thickness air pipe as a correction signal to automatically adjust the thickness of the substrate glass.
Preferably, in S1, the acquiring the substrate glass thickness includes:
and measuring the thickness of the substrate glass in real time by a laser triangulation method and forming a thickness matrix data set.
Preferably, the step S2 further comprises forming a thickness deviation matrix data set T according to the thickness deviation of the substrate glass2，
Wherein, the calculation expression of the thickness deviation of the substrate glass is as follows:
δij＝xij-x0
in the formula, deltaijFor the thickness deviation of the substrate glass, the length of the substrate glass along the flow direction is divided into m parts, the length of the substrate glass along the non-flow direction is divided into n parts, xijThe thickness of the substrate glass at the overlapped area of the ith part of the substrate glass in the flowing direction and the jth part of the substrate glass in the non-flowing direction, wherein i is 1, 2, …, m, j is 1, 2, …, n, x0A target thickness is produced for the substrate glass.
Preferably, in S2, if the deviation value is greater than the set threshold value of the glass thickness, the method further includes determining a type of the substrate glass thickness unevenness:
if the thickness deviation matrix data set T2Middle | deltaijAll | is greater than a set threshold or thickness deviation matrix data set T2Delta in one or more linesijIf the values are all larger than the set threshold value, judging that the flow direction thickness of the substrate glass is not uniform, and calculating the traction speed of a traction roller or the air quantity of an air pipe with the whole thickness as a correction signal to automatically adjust the thickness of the substrate glass;
if the thickness deviation matrix dataCollection T2Delta of one or more columnsijIf the values are all larger than the set threshold value, the non-flow thickness of the substrate glass is judged to be non-uniform, and one or more rows of delta are calculatedijAnd the air quantity of the thickness air pipe corresponding to the value greater than the set threshold value is used as a correction signal to automatically adjust the thickness of the substrate glass.
Preferably, the step of calculating the pulling speed of the pulling roll as a correction signal to automatically adjust the thickness of the substrate glass in the step S3 includes: the traction speed of the traction roller is used as a correction signal and fed back to a traction roller driving motor, and the traction roller driving motor is controlled to adjust the traction roller speed according to the correction signal, so that the automatic adjustment of the thickness of the substrate glass is realized;
the calculation expression of the traction speed of the traction roller is as follows:
in the formula, vTraction apparatusThe pulling speed, delta, of the pulling roll after the thickness of the substrate glass is adjustedijThe thickness deviation v of the substrate glass at the overlapping region of the ith part in the flow direction and the jth part in the non-flow direction0The traction speed of a traction roller before the thickness of the substrate glass is adjusted; m is the number of equal parts of the substrate glass along the length of the flow direction, n is the number of equal parts of the substrate glass along the length of the non-flow direction, wherein i is 1, 2, …, m, j is 1, 2, …, n, x0A target thickness is produced for the substrate glass.
Preferably, the step of calculating the air volume of the thickness air duct as the correction signal to automatically adjust the thickness of the substrate glass in S3 includes the following steps:
obtaining a thickness wind response curve;
calculating the air quantity of the thickness air pipe according to the thickness deviation of the substrate glass and the thickness air response curve;
and converting the calculated thickness air pipe air quantity into an electric signal serving as a corrected value to be fed back to a thickness air pipe air cylinder motor, and controlling the thickness air pipe air cylinder motor to adjust the thickness air quantity according to the corrected value to realize the automatic adjustment of the thickness of the substrate glass.
Preferably, after the automatic adjustment of the thickness of the substrate glass in S3 is completed, the method further includes:
the adjusted thickness of the substrate glass is collected again, the thickness deviation of the substrate glass is calculated and compared with a set threshold value, and whether the thickness of the substrate glass meets the production requirement is judged;
if the thickness of the substrate glass meets the production requirement, the adjustment is completed;
and if the thickness of the substrate glass does not meet the production requirement, repeating S1-S3 until the production requirement is met, and finishing the adjustment.
An automatic substrate glass thickness adjusting system comprising:
the data acquisition module is used for acquiring the thickness of the substrate glass;
a thickness deviation calculating module for calculating the thickness deviation of the substrate glass,
if the deviation value is not greater than the set threshold value of the glass thickness, the thickness of the substrate glass meets the production requirement, and the thickness of the substrate glass is not adjusted;
if the deviation value is larger than the set threshold value of the glass thickness, the next step is carried out;
and the automatic adjustment calculation module is used for calculating the traction speed of the traction roller or the air quantity of the thickness air pipe as a correction signal to automatically adjust the thickness of the substrate glass.
Preferably, the thickness deviation calculation module includes a judgment unit for judging the type of the substrate glass thickness unevenness:
if the thickness deviation matrix data set T2Middle | deltaijAll | is greater than a set threshold or thickness deviation matrix data set T2Delta in one or more linesijIf the values are all larger than the set threshold value, judging that the flow direction thickness of the substrate glass is not uniform, and calculating the traction speed of a traction roller or the air quantity of an air pipe with the whole thickness as a correction signal to automatically adjust the thickness of the substrate glass;
if the thickness deviation matrix data set T2Delta of one or more columnsijIf the values are all larger than the set threshold value, the non-flow thickness of the substrate glass is judged to be non-uniform, and one or more rows are calculatedColumn deltaijAnd the air quantity of the thickness air pipe corresponding to the value greater than the set threshold value is used as a correction signal to automatically adjust the thickness of the substrate glass.
Preferably, the automatic adjustment calculation module comprises a data feedback unit, the data feedback unit is used for re-collecting the adjusted thickness of the substrate glass, calculating the thickness deviation of the substrate glass, comparing the thickness deviation with a set threshold value and judging whether the thickness of the substrate glass meets the production requirement;
if the thickness of the substrate glass meets the production requirement, the adjustment is completed;
and if the thickness of the substrate glass does not meet the production requirement, repeating S1-S3 until the production requirement is met, and finishing the adjustment.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an automatic adjusting method for the thickness of base plate glass, which comprises the steps of firstly collecting base plate glass thickness data in real time, calculating the thickness deviation of the base plate glass, comparing the thickness deviation with a set threshold value in a standard production regulation, judging whether the current glass thickness meets the production requirement, automatically entering the next adjusting link if the current glass thickness does not meet the production requirement, converting the traction speed of a traction roller into an electric signal as a correction signal to be fed back to a traction roller driving motor through calculating the traction speed of the traction roller in a production device, controlling the traction roller driving motor to adjust the traction speed according to the correction signal obtained through calculation, further achieving the purpose of adjusting the thickness of the base plate glass in glass production through adjusting and controlling the thickness parameter of the glass, and realizing automatic adjustment. The automatic adjusting method can improve the automation degree of the substrate glass production process, improves the production efficiency, reduces errors caused by artificial subjective experience judgment and manual adjustment in the thickness and thickness uniformity parameter adjusting process, and improves the quality of the substrate glass in the production process.
According to the invention, the glass thickness can be adjusted by calculating the traction speed of the traction roller as a correction signal according to the type of non-uniform thickness along the flow direction in the substrate glass production process, and when the glass thickness is not uniform along the non-flow direction in the substrate glass production process, the glass thickness can be automatically adjusted by calculating the air volume of the thickness air pipe as a corresponding correction signal, the air volume of the thickness air pipe is obtained by calculating the glass thickness deviation and the thickness air response curve, and is fed back to the thickness air pipe cylinder motor to control the air volume of the thickness air pipe, so that the purpose of adjusting the glass thickness parameter to meet the subsequent glass production thickness standard is achieved.
Further, the method is also provided with a step of parameter feedback check after automatic adjustment, the thickness parameter in the production process of the adjusted substrate glass is collected again, the corresponding thickness deviation is calculated and compared with a standard threshold value to determine whether the production requirement of the substrate glass is met, if the production requirement is met, the adjustment is stopped, a subsequent link is started, and if the production requirement of the substrate glass is not met, the steps are continuously repeated to further adjust the thickness until the thickness meets the production requirement.
Drawings
FIG. 1 is a flow chart of the method for automatically adjusting the thickness of a glass substrate according to the present invention;
FIG. 2 is a block diagram of an automatic substrate glass thickness adjusting system according to the present invention;
FIG. 3 is a schematic view of an embodiment of the present invention illustrating a process for automatically adjusting a thickness parameter;
FIG. 4 is a schematic view of a glass substrate zone according to the present invention;
FIG. 5 is a schematic top view of the thickness duct distribution of the present invention.
In the figure, 1, substrate glass; 2. a substrate glass subregion region; 3. and (7) a thickness air pipe.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the method for automatically adjusting the thickness of the substrate glass of the present invention comprises the following steps:
s1, collecting the thickness of the substrate glass;
s2, calculating the thickness deviation of the substrate glass,
if the deviation value is not greater than the set threshold value of the glass thickness, the thickness of the substrate glass meets the production requirement, and the thickness of the substrate glass is not adjusted;
if the deviation value is larger than the set threshold value of the glass thickness, the next step is carried out;
and S3, calculating the traction speed of the traction roller or the air volume of the thickness air pipe as a correction signal to automatically adjust the thickness of the substrate glass.
The invention provides a method for automatically adjusting the thickness of substrate glass, which comprises the steps of firstly collecting the thickness data of the substrate glass in real time, calculating the thickness deviation of the substrate glass 1, comparing with a set threshold value in a standard production rule, judging whether the thickness of the glass meets the production requirement at present, if not, automatically entering a next adjustment link, calculating the traction speed of a traction roller or the air volume of a thickness air pipe in a production device, converting the traction speed of the traction roller or the air volume of the thickness air pipe into an electric signal serving as a correction signal and feeding the electric signal back to a traction roller driving motor or a thickness air pipe air cylinder motor, controlling a traction roller driving motor to adjust traction speed or a thickness air pipe cylinder motor to adjust thickness air quantity according to the correction signal obtained by calculation, the thickness parameter of the glass is adjusted and controlled, so that the aim of adjusting the thickness of the substrate glass in glass production is fulfilled, and automatic adjustment is realized. The automatic adjusting method can improve the automation degree of the production process of the substrate glass 1, realize the improvement of the production efficiency, simultaneously reduce the errors caused by artificial subjective experience judgment and manual adjustment in the thickness and thickness uniformity parameter adjusting process, and improve the quality of the substrate glass 1 in the production process.
Examples
Referring to fig. 3, the following will explain the steps of the automatic thickness adjusting method for substrate glass production according to the present invention in further detail.
An automatic adjusting method for the production thickness of advanced generation substrate glass comprises the following steps:
step one, measuring the thickness x of the substrate glass in real time by a laser triangulation methodij( i 1, 2, …, m, j 1, 2, …, n) and forming a thickness matrix dataset T1:
Wherein, as shown in FIGS. 4 and 5, the substrate glass 1 is divided into substrate glass divisional areas 2 according to the glass flow direction and the non-flow direction, m is the number of parts of the substrate glass 1 divided equally along the length of the flow direction, n is the number of parts of the substrate glass 1 divided equally along the length of the non-flow direction, xij( i 1, 2, …, m, j 1, 2, …, n) is the thickness of the substrate glass in the overlapping area of the ith part of the substrate glass 1 in the flow direction and the jth part of the substrate glass 1 in the non-flow direction;
step two, calculating the thickness deviation delta of the substrate glassijAnd forming a thickness deviation matrix data set T2:
Thickness deviation matrix dataset T2The method comprises the following steps: delta. for the preparation of a coatingij＝xij-x0；
Wherein, deltaijThe thickness deviation x of the substrate glass 1 in the overlapping region of the ith part in the flow direction and the jth part in the non-flow directionij( i 1, 2, …, m, j 1, 2, …, n) is the thickness of the substrate glass in the overlapping region of the ith part of the substrate glass 1 in the flow direction and the jth part in the non-flow direction, x0Producing a target thickness for the substrate glass;
setting a threshold δThreshold valueIf deltaij| is less than or equal to threshold δThreshold valueIf the thickness of the substrate glass meets the production requirement, the thickness of the substrate glass is not adjusted, and the step one is returned; whereas if deltaijAll is greater than the threshold δThreshold valueOr i ═ q (q ═ 1, 2, …, n), δqj(j ═ 1, 2, …, m), i.e. if the thickness deviation matrix dataset T2Middle | deltaijAll | is greater than a set threshold or thickness deviation matrix data set T2Delta in one or more linesijThe values are all larger than the threshold value deltaThreshold valueIf the flow direction thickness of the substrate glass 1 is not uniform, calculating the traction speed of the traction roller in the third step to automatically adjust, or calculating the air volume of the air pipe with all the thickness in the fourth step to automatically adjust, otherwise, if the thickness deviation matrix data set T is not uniform, calculating the air volume of the air pipe with all the thickness to automatically adjust2Delta of one or more columnsijIf the values are all larger than the set threshold value, the substrate glass 1 is judged to be non-flowing and non-uniform in thickness, the air quantity of the local thickness air pipe is directly calculated in the fourth step to be automatically adjusted, wherein the air quantity of the local thickness air pipe refers to the thickness deviation delta of the substrate glass in one or more rowsijThe air quantity of the thickness air pipe of which the value is greater than the set threshold value can be adjusted more accurately by the adjusting method;
step three, calculating the traction speed v of the traction rollerTraction apparatus：
Wherein: v. ofTraction apparatusAdjusting the rear pulling speed, delta, of the pulling rolls for the thickness of the substrate glassijThe thickness deviation v of the substrate glass 1 is the overlapping area of the ith part in the flow direction and the jth part in the non-flow direction0To adjust the front traction roller speed; m is the number of equal divisions of the length of the substrate glass 1 along the flow direction, and n is the number of equal divisions of the length of the substrate glass 1 along the non-flow direction;
will calculate the traction roller traction speed vTraction apparatusThe electric signal is converted into a corrected value and fed back to a traction roller driving motor, and the speed of the traction roller is adjusted in real time through a PLC (programmable logic controller), so that the automatic adjustment of the thickness of the substrate glass 1 in the production process is realized;
step four, taking j ═ p (p ═ 1, 2, …, n), δip(i-1, 2, …, m), i.e. if the thickness deviation matrix dataset T2Delta of one or more columnsijAll values are larger than the threshold value deltaThreshold valueAnd judging the type of non-flow direction and non-uniform thickness, and calculating the air quantity Q of the thickness air pipe according to the deviation thickness and the thickness air response curve:
wherein Q is the wind volume of the thickness wind pipe, deltaip(i is 1, 2, …, m) is the thickness deviation value of the p-th (i is 1, 2, …, n) region of the non-flow direction, aq，Aq-1，…，A，A0The deviation thickness and the thickness wind response curve parameter are obtained;
converting the calculated thickness air pipe air quantity Q into an electric signal serving as a correction value and feeding the electric signal back to a thickness air pipe 3 air cylinder motor, and adjusting the thickness air quantity in real time through a PLC (programmable logic controller) to realize automatic thickness adjustment in the production process of the substrate glass 1;
according to the invention, in the type of non-uniform thickness along the flow direction in the production process of the substrate glass 1, the glass thickness can be adjusted by using the traction speed of the traction roller as a correction signal, and in the type of non-uniform thickness along the non-flow direction in the production process of the substrate glass 1, the glass thickness can be automatically adjusted by using the air volume of the thickness air pipe as a corresponding correction signal, the air volume of the thickness air pipe is obtained by calculating the glass thickness deviation and the thickness air response curve, and is fed back to the air cylinder motor of the thickness air pipe 3 to control the air volume of the adjusting air pipe, so that the purpose of adjusting the glass thickness parameter to meet the subsequent glass production thickness standard is achieved.
Step five, returning to the step one, re-collecting the thickness data set after the thickness parameters are adjusted in the production process of the substrate glass 1, and calculating the thickness deviation delta of the substrate glassijJudging whether the thickness parameter of the substrate glass meets the requirement or not,
if the thickness of the substrate glass meets the production requirement, the adjustment is completed;
and if the thickness of the substrate glass does not meet the production requirement, repeating the steps until the production requirement is met, and finishing the adjustment.
The method is also provided with a step of parameter feedback inspection after automatic adjustment, the thickness parameters in the production process of the adjusted substrate glass 1 are collected again, the corresponding thickness deviation is calculated and compared with a standard threshold value, whether the production requirement of the substrate glass 1 is met or not is determined, if the production requirement is met, the adjustment is stopped, a subsequent link is started, and if the production requirement of the substrate glass 1 is not met, the steps are continuously repeated for further thickness adjustment until the thickness meets the production requirement.
The invention also provides a system for automatically adjusting the thickness of the substrate glass, which is used for realizing the automatic adjusting method, and as shown in fig. 2, the system comprises the following components:
the data acquisition module is used for acquiring the thickness of the substrate glass;
a thickness deviation calculating module for calculating the thickness deviation of the substrate glass,
if the deviation value is not greater than the set threshold value of the glass thickness, the thickness of the substrate glass meets the production requirement, and the thickness of the substrate glass is not adjusted;
if the deviation value is larger than the set threshold value of the glass thickness, the next step is carried out;
and the automatic adjustment calculation module is used for calculating the traction speed of the traction roller or the air quantity of the thickness air pipe as a correction signal to automatically adjust the thickness of the substrate glass.
Further, the thickness deviation calculation module includes a judgment unit for judging a type of the substrate glass thickness unevenness:
if the thickness deviation matrix data set T2Middle | deltaijAll | is greater than a set threshold or thickness deviation matrix data set T2Delta in one or more linesijIf the values are all larger than the set threshold value, judging that the flow direction thickness of the substrate glass is not uniform, and calculating the traction speed of a traction roller or the air quantity of an air pipe with the whole thickness as a correction signal to automatically adjust the thickness of the substrate glass;
if the thickness deviation matrix data set T2Delta of one or more columnsijIf the values are all larger than the set threshold value, the non-flowing thickness of the substrate glass is judged to be non-uniform, and one or more rows of delta are calculatedijAnd the air quantity of the thickness air pipe corresponding to the value greater than the set threshold value is used as a correction signal to automatically adjust the thickness of the substrate glass.
Furthermore, the automatic adjustment calculation module also comprises a data calculation unit for calculating the air quantity of the thickness air pipe.
Furthermore, the automatic adjusting and calculating module is also used for converting the calculated air volume of the thickness air pipe into an electric signal and transmitting the electric signal to the air cylinder motor of the thickness air pipe, and the thickness air pipe is adjusted in real time through the PLC, so that the thickness of the substrate glass 1 in the production process is automatically adjusted.
Furthermore, the automatic adjustment calculation module also comprises a data feedback unit which is used for collecting the glass thickness data after the thickness parameter adjustment in the production process of the substrate glass 1, calculating the thickness deviation delta ij of the substrate glass and judging whether the thickness parameter of the substrate glass meets the requirement or not.
Wherein each substrate glass 1 is divided into m and n fractions according to the flow direction and the non-flow direction, respectively.
The invention measures the thickness of the substrate glass in real time by a laser triangulation method.
In the invention, the thickness data of each substrate glass is collected in real time and a thickness matrix data set is formed.
In the invention, the thickness deviation of the substrate glass is calculated, and a thickness deviation matrix data set is formed.
The invention judges the type of non-uniform thickness of the flow direction and non-flow direction in the production process of the substrate glass 1 according to the comparison of the thickness deviation of the substrate glass and a set threshold value.
If the production process of the substrate glass 1 is uneven in flow direction and thickness, calculating the speed of the traction roller according to the average value of thickness deviation, converting the speed value into an electric signal and feeding the electric signal back to a traction roller driving motor, and adjusting the speed of the traction roller in real time through a PLC (programmable logic controller) to realize automatic adjustment of the thickness in the production process of the substrate glass 1;
if the substrate glass 1 is not uniform in thickness in the non-flow direction, the air quantity of the thickness air pipe is calculated according to the deviation thickness and the thickness air response curve, the air quantity is converted into an electric signal and fed back to the traction roller driving motor, the thickness air quantity is adjusted in real time through the PLC, and the automatic thickness adjustment in the substrate glass 1 production process is achieved.
The thickness air pipes are distributed on two sides of the substrate glass 1, and the number of the thickness air pipes on one side is the same as the number of equal parts in non-flowing direction.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. The method for automatically adjusting the thickness of the substrate glass is characterized by comprising the following steps of:
s1, collecting the thickness of the substrate glass;
s2, calculating the thickness deviation of the substrate glass,
if the deviation value is not greater than the set threshold value of the glass thickness, the thickness of the substrate glass meets the production requirement, and the thickness of the substrate glass is not adjusted;
if the deviation value is larger than the set threshold value of the glass thickness, the next step is carried out;
and S3, calculating the traction speed of the traction roller or the air volume of the thickness air pipe as a correction signal to automatically adjust the thickness of the substrate glass.
2. The method according to claim 1, wherein the step of collecting the thickness of the substrate glass in step S1 comprises:
and measuring the thickness of the substrate glass in real time by a laser triangulation method and forming a thickness matrix data set.
3. The method as claimed in claim 1, wherein the step S2 further comprises forming a thickness deviation matrix data set T according to the thickness deviation of the glass substrate2，
Wherein, the calculation expression of the thickness deviation of the substrate glass is as follows:
δij＝xij-x0
in the formula, deltaijFor the thickness deviation of the substrate glass, the length of the substrate glass (1) along the flow direction is equally divided into m parts, the length of the substrate glass (1) along the non-flow direction is equally divided into n parts, xijThe thickness of the substrate glass (1) at the overlapping region of the ith part in the flow direction and the jth part in the non-flow direction, wherein i is 1, 2, …, m, j is 1, 2, …, n, x0A target thickness is produced for the substrate glass.
4. The method as claimed in claim 3, wherein the step of S2, if the deviation is greater than the predetermined threshold value, further comprises determining the type of the non-uniform thickness of the substrate glass:
if the thickness deviation matrix data set T2Middle | deltaijAll | is greater than a set threshold or thickness deviation matrix data set T2Delta in one or more linesijIf the values are all larger than the set threshold value, judging that the flow direction thickness of the substrate glass is not uniform, and calculating the traction speed of a traction roller or the air quantity of an air pipe with the whole thickness as a correction signal to automatically adjust the thickness of the substrate glass;
if the thickness deviation matrix data set T2Delta of one or more columnsijIf the values are all larger than the set threshold value, the non-flowing thickness of the substrate glass is judged to be non-uniform, and one or more rows of delta are calculatedijAnd the air quantity of the thickness air pipe corresponding to the value larger than the set threshold value is used as a correction signal to automatically adjust the thickness of the substrate glass.
5. The method as claimed in claim 1, wherein the step of calculating the pulling speed of the pulling roll as the correction signal to automatically adjust the thickness of the substrate glass in the step S3 comprises: the traction speed of the traction roller is used as a correction signal and fed back to a traction roller driving motor, and the traction roller driving motor is controlled to adjust the traction roller speed according to the correction signal, so that the automatic adjustment of the thickness of the substrate glass is realized;
the calculation expression of the traction speed of the traction roller is as follows:
in the formula, vTraction apparatusThe pulling speed, delta, of the pulling roll after the thickness of the substrate glass is adjustedijThe thickness deviation of the substrate glass (1) at the overlapping region of the ith part in the flow direction and the jth part in the non-flow direction, v0The traction speed of a traction roller before the thickness of the substrate glass is adjusted; m is the number of parts of the substrate glass (1) which are evenly divided along the length of the flowing direction, n is the number of parts of the substrate glass (1) which are evenly divided along the length of the non-flowing direction, wherein i is 1, 2, …, m, j is 1, 2, …, n, x0Is a substrate glassProducing the target thickness.
6. The method as claimed in claim 1, wherein the step of calculating the air volume of the thickness air duct as the correction signal to automatically adjust the thickness of the substrate glass in S3 comprises the following steps:
obtaining a thickness wind response curve;
calculating the air quantity of the thickness air pipe according to the thickness deviation of the substrate glass and the thickness air response curve;
and converting the calculated thickness air pipe air quantity into an electric signal as a correction value to be fed back to the thickness air pipe (3) air cylinder motor, and controlling the thickness air pipe (3) air cylinder motor to adjust the thickness air quantity according to the correction value to realize the automatic adjustment of the thickness of the substrate glass.
7. The method as claimed in claim 1, wherein after the step of automatically adjusting the thickness of the glass substrate in S3, the method further comprises:
the thickness of the adjusted substrate glass is collected again, the thickness deviation of the substrate glass is calculated and compared with a set threshold value, and whether the thickness of the substrate glass meets the production requirement or not is judged;
if the thickness of the substrate glass meets the production requirement, the adjustment is completed;
and if the thickness of the substrate glass does not meet the production requirement, repeating S1-S3 until the production requirement is met, and finishing the adjustment.
8. An automatic adjusting system for a substrate glass thickness, characterized in that the automatic adjusting method according to any one of claims 1 to 7 comprises:
the data acquisition module is used for acquiring the thickness of the substrate glass;
a thickness deviation calculating module for calculating the thickness deviation of the substrate glass,
if the deviation value is not greater than the set threshold value of the glass thickness, the thickness of the substrate glass meets the production requirement, and the thickness of the substrate glass is not adjusted;
if the deviation value is larger than the set threshold value of the glass thickness, the next step is carried out;
and the automatic adjustment calculation module is used for calculating the traction speed of the traction roller or the air quantity of the thickness air pipe as a correction signal to automatically adjust the thickness of the substrate glass.
9. The automatic substrate glass thickness adjusting system according to claim 8, wherein the thickness deviation calculating module comprises a judging unit for judging the type of the substrate glass thickness unevenness:
if the thickness deviation matrix data set T2Middle | deltaijAll | is greater than a set threshold or thickness deviation matrix data set T2Delta in one or more linesijIf the values are all larger than the set threshold value, judging that the flow direction thickness of the substrate glass is not uniform, and calculating the traction speed of a traction roller or the air quantity of an air pipe with the whole thickness as a correction signal to automatically adjust the thickness of the substrate glass;
if the thickness deviation matrix data set T2Delta of one or more columnsijIf the values are all larger than the set threshold value, the non-flow thickness of the substrate glass is judged to be non-uniform, and one or more rows of delta are calculatedijAnd the air quantity of the thickness air pipe corresponding to the value greater than the set threshold value is used as a correction signal to automatically adjust the thickness of the substrate glass.
10. The automatic substrate glass thickness adjusting system according to claim 8, wherein the automatic adjustment calculating module comprises a data feedback unit, the data feedback unit is used for re-collecting the adjusted substrate glass thickness, calculating the substrate glass thickness deviation and comparing the substrate glass thickness deviation with a set threshold value, and judging whether the substrate glass thickness meets the production requirement;
if the thickness of the substrate glass meets the production requirement, the adjustment is completed;
and if the thickness of the substrate glass does not meet the production requirement, repeating S1-S3 until the production requirement is met, and finishing the adjustment.
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| CN115108711A (en) * | 2022-06-28 | 2022-09-27 | 河南旭创光电新材料有限公司 | Method and device for automatically controlling glass thickness |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837008A (en) * | 2016-06-01 | 2016-08-10 | 东旭科技集团有限公司 | Overflow process glass production line and automatic control system and method thereof |
| CN113045184A (en) * | 2021-01-29 | 2021-06-29 | 彩虹显示器件股份有限公司 | Method for precisely adjusting manufacturing thickness of glass substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105837008A (en) * | 2016-06-01 | 2016-08-10 | 东旭科技集团有限公司 | Overflow process glass production line and automatic control system and method thereof |
| CN113045184A (en) * | 2021-01-29 | 2021-06-29 | 彩虹显示器件股份有限公司 | Method for precisely adjusting manufacturing thickness of glass substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115108711A (en) * | 2022-06-28 | 2022-09-27 | 河南旭创光电新材料有限公司 | Method and device for automatically controlling glass thickness |
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