CN115108711A - Method and device for automatically controlling glass thickness - Google Patents
Method and device for automatically controlling glass thickness Download PDFInfo
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- CN115108711A CN115108711A CN202210745266.3A CN202210745266A CN115108711A CN 115108711 A CN115108711 A CN 115108711A CN 202210745266 A CN202210745266 A CN 202210745266A CN 115108711 A CN115108711 A CN 115108711A
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- glass
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- flow rate
- control
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- 239000011521 glass Substances 0.000 title claims abstract description 207
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000007496 glass forming Methods 0.000 claims abstract description 15
- 238000007493 shaping process Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 description 11
- 238000003860 storage Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000006060 molten glass Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
- C03B18/08—Changing or regulating the dimensions of the molten glass ribbon using gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B15/00—Drawing glass upwardly from the melt
- C03B15/02—Drawing glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
Abstract
The embodiment of the invention provides an automatic control method for glass thickness, and belongs to the technical field of automatic control of industrial processes. The automatic glass thickness control method is used for controlling the thickness of glass produced in glass forming equipment and comprises the following steps: obtaining the thickness of the glass currently produced; and when the glass thickness is not in the preset range, controlling the air speed and/or the glass flow rate of the forming air pipe so as to control the glass thickness.
Description
Technical Field
The invention relates to the technical field of automatic control of industrial processes, in particular to a method and a device for automatically controlling the thickness of glass.
Background
In a glass production line, after glass liquid reaches a forming device through a glass channel, glass is blown into a preset shape through a forming air pipe, wherein the air speed of the forming air pipe can influence the thickness of finished glass. In addition, in a glass production line, the flow rate of molten glass can also affect the thickness of finished glass due to the direct effect on the supply of molten glass to the glass forming equipment.
At present, a mobile display terminal develops towards a direction of light, thin, convenient and foldable, and a display glass cover plate also develops towards an ultrathin flexible direction, in the production process of ultrathin flexible glass, stricter requirements are provided for the thickness range of the glass, the thickness of finished glass is controlled by manually adjusting production process parameters after thickness data is measured in the conventional glass thickness range adjusting mode, and the mode is long in lag time and greatly affects the product yield.
Disclosure of Invention
The embodiment of the invention aims to provide an automatic glass thickness control method which can detect the thickness of glass produced at present in real time, directly calculate and automatically adjust the air speed and/or the glass flow rate of a forming air pipe so as to control the thickness of the glass.
In order to achieve the above object, an embodiment of the present invention provides an automatic glass thickness control method for controlling a thickness of glass produced in a glass forming apparatus, the automatic glass thickness control method including:
obtaining the thickness of the glass currently produced;
and when the glass thickness is not in the preset range, controlling the air speed of the forming air pipe and/or the glass flow speed thickness so as to control the glass thickness. .
Optionally, the wind speed of the shaping wind pipe and/or the glass flow rate thickness are controlled according to a formula H-a × V1 × b × V2 to control the glass thickness, where V1 is the wind speed of the shaping wind pipe, V2 is the glass flow rate, and a and b are preset coefficients.
Preferably, the controlling the air speed and/or the glass flow rate thickness of the forming air pipe to control the glass thickness comprises:
firstly, adjusting the air speed of the forming air pipe to control the thickness of the glass;
and when the air speed of the forming air pipe reaches an adjusting limit, if the glass thickness is still not in a preset range, adjusting the glass flow rate to control the glass thickness.
Optionally, the air speed of the forming air pipe and the glass flow rate are automatically controlled by an operating system of the glass forming equipment.
Optionally, the glass thickness is measured by a laser online thickness meter.
By the method, the air speed of the forming air pipe and/or the glass flow rate are/is directly adjusted according to the thickness of the glass currently produced and detected in real time, so that the thickness of the glass is controlled, and the stability of the glass production process is greatly improved.
In another aspect, the present invention provides an automatic control device for glass thickness, for use in a glass forming apparatus, the device comprising:
the forming air pipe is used for blowing the glass liquid flowing to the forming air pipe position through the glass channel in a preset mode so as to enable the glass liquid to be preliminarily formed into a preset shape;
the glass flow velocity control system is used for controlling the glass flow velocity in the glass channel;
the thickness measuring equipment is used for measuring the thickness of the glass produced by the glass forming equipment in real time;
and the controller is used for controlling the air speed of the forming air pipe and/or the glass flow rate so that the glass thickness detected by the thickness measuring equipment is within a preset range.
Optionally, the controller controls the glass thickness according to a formula of H ═ a × V1 × b × V2, where a and b are preset coefficients, H is the glass thickness, V1 is the air speed of the shaping air duct, and V2 is the glass flow rate.
Optionally, the thickness measuring device is a laser online thickness meter.
Preferably, the controller first adjusts the air speed of the shaping air pipe, and when the air speed of the shaping air pipe reaches an adjustment limit, if the glass thickness is not within a predetermined range, the controller adjusts the glass flow rate to control the glass thickness to be within the predetermined range.
Through the technical scheme, the glass thickness data detected in real time is fed back to the controller by the glass online thickness measuring device, and the controller automatically adjusts the air speed and/or the glass flow rate of the forming air pipe according to the data, so that the glass thickness can be controlled in real time, and the glass thickness is stabilized to be extremely poor. The technical scheme can be used for automatic control of the online extremely-poor thickness of the ultrathin glass.
Additional features and advantages of embodiments of the present invention will be described in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention. In the drawings:
FIG. 1 is a flow chart of a method for automatically controlling glass thickness according to an embodiment of the present invention;
FIG. 2 is a flow chart of the automatic control of glass thickness according to another embodiment of the present invention; and
FIG. 3 is a front view of an automatic control device for glass thickness according to another embodiment of the present invention.
Description of the reference numerals
1-glass channel;
2, forming an air duct;
3-glass flow rate control system;
4-a forming device;
5-thickness measuring laser probe;
6, thickness measuring equipment; and
7-glass.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
The core idea of the invention is that a glass online thickness measuring device is arranged nearby a glass forming device along a glass channel, and the air speed of a forming air pipe and the glass flow are automatically adjusted according to real-time feedback glass thickness data, so that the purposes of controlling the glass thickness and stabilizing the glass thickness range are achieved.
An embodiment of the present invention relates to a method for automatically controlling the on-line thickness of glass, and is shown in fig. 1. This example applies to the glass forming process in a glass production line where the glass product is shaped as it passes from the molten glass to the glass state as it passes to the forming apparatus. Controlling the thickness of the glass product thus requires intervention when the glass is shaped. The control flow of this embodiment is as follows:
detecting the thickness of the glass product produced at present in real time, and obtaining a numerical value H of the glass thickness;
judging whether the glass thickness H is within a preset range, if not, continuing to produce and restarting new detection;
if the glass thickness H exceeds a preset range, adjusting production process parameters to control the glass thickness, wherein the specifically adjusted production process parameters are the air speed of a forming air pipe and/or the flow rate of glass;
and (3) detecting the glass thickness H again after adjusting the air speed and/or the glass flow rate of the forming air pipe to judge whether the technological parameters need to be continuously adjusted.
The technical advantage of this embodiment is that according to the thickness of the glass currently produced by real-time detection, the air speed and/or the glass flow rate of the forming air pipe are/is directly adjusted to control the thickness of the glass, so that the stability of the glass production process is greatly improved.
It should be further noted that the controlling the air speed of the shaping air duct and/or the glass flow rate thickness can be further performed according to the formula H ═ a × V1 × b × V2 to control the glass thickness, where V1 is the air speed of the shaping air duct, V2 is the glass flow rate, and a and b are preset coefficients.
In this embodiment, the air speed of the forming air pipe and the flow rate of the glass can be automatically controlled by an operating system of the glass forming equipment, and the air speed of the forming air pipe is preferentially adjusted, because the air speed of the forming air pipe can more finely control the thickness and the forming details of the glass. The specific control of the glass thickness by controlling the air speed of the forming air pipe and/or the glass flow velocity thickness may be: firstly, adjusting the air speed of the forming air pipe to control the thickness of the glass; and when the air speed of the forming air pipe reaches an adjusting limit, if the glass thickness is still not in a preset range, adjusting the glass flow rate to control the glass thickness. Wherein, the glass thickness is measured by a laser online thickness meter.
Through the above preferred technical scheme of this embodiment, the glass thickness data detected by the online thickness meter of glass laser is fed back in real time, and the air speed and/or the glass flow rate of the forming air pipe are/is automatically adjusted according to the data, so that the glass thickness can be controlled in real time, and the glass thickness range is stabilized. And when the air speed of the forming air pipe reaches the adjusting limit, if the glass thickness is not in the preset range, the glass flow speed is adjusted, so that the glass thickness can be more finely controlled to be kept in a minimum range.
In combination with the above optimization of the first embodiment, another embodiment can be obtained, please refer to the flow chart of the automatic control of the glass thickness shown in fig. 2.
The thickness of the glass currently produced is detected in real time, and whether the thickness of the glass currently produced is within a preset range is detected. If so, continuing the production according to the current process parameters, otherwise, adjusting the current process parameters.
According to the control logic of the present embodiment, it is determined whether the molded duct has reached the adjustment limit before the current process parameters are adjusted. If so, the glass thickness can only be controlled by adjusting the glass flow rate; if not, the glass thickness is controlled by preferentially adjusting the air speed of the forming air pipe.
And after the glass flow rate or the air speed of the forming air pipe is adjusted, the thickness of the glass produced at present is obtained again, and a new judgment and adjustment process is started.
Another embodiment of the present invention relates to an apparatus for automatically controlling the thickness of ultra-thin glass on-line, as shown in fig. 3. The glass 7 moves downstream along the glass channel 1 in the production line, and on reaching the forming device 4, the glass changes from a liquid state to a glass state and begins to set. The glass is blown into a predetermined shape by a shaping air duct 2 at a shaping apparatus as shown in fig. 1, wherein the air speed of the shaping air duct 2 affects the thickness of the finished glass. In addition, the glass flow rate control system 3 provided on the glass channel 1 before the glass enters the forming device 4 as shown in fig. 1 can control the flow rate of the molten glass, and can influence the supply amount of the molten glass of the glass forming device and further influence the thickness of the finished glass. The invention is provided with a thickness measuring device 6 at the position where the finished glass product leaves the forming device 4, for example, but not limited to, a laser on-line thickness meter, which is used for measuring the thickness of the finished glass product in real time and feeding back the thickness to a controller (not shown), wherein the controller automatically adjusts the air speed of a forming air pipe and/or the flow rate of glass according to the difference between the obtained glass thickness data and the expected glass thickness, thereby controlling the glass thickness. Wherein the thickness measuring equipment 6 comprises a thickness measuring laser probe 5.
Specifically, the controller in this embodiment uses the formula: the glass thickness H is V1 (forming air duct wind speed) a V2 (glass flow speed) b, automatic adjustment is carried out, wherein a and b are preset coefficients, and the forming air duct wind speed V1 is adjusted by adjusting the pressure of compressed air entering the forming air duct. The glass laser on-line thickness gauge transmits thickness data to the forming equipment, the thickness data of each air pipe corresponding to the glass position are connected with the air speed of the corresponding air pipe, and the operating system can accurately control the air speed of each air pipe.
Furthermore, the air speed of the forming air pipe is adjusted to control the thickness of the glass; and when the air speed of the forming air pipe reaches an adjusting limit, if the glass thickness is still not in a preset range, adjusting the glass flow rate to control the glass thickness.
It should be further noted that the preset coefficients a and b may be values set by those skilled in the art according to experience or other known methods, and may also be obtained by adjusting the following methods:
keeping other parameters of the glass forming equipment except the forming air duct wind speed V1 unchanged;
adjusting the wind speed V1 of the forming air duct, and taking the relation coefficient between the wind speed V1 of the forming air duct and the glass thickness H as a preset coefficient a according to the corresponding relation between the wind speed V1 of different forming air ducts and the glass thickness H;
maintaining other parameters of the glass forming apparatus other than the glass flow rate;
and adjusting the glass flow rate, and taking the relation coefficient between the glass flow rate and the glass thickness H as a preset coefficient b according to the corresponding relation between different glass flow rate V2 values and glass thickness H values.
Preferably, when the glass thickness H is not within the preset value range, the controller can automatically adjust the air speed of the air pipe to control the glass thickness, and when the air speed adjustment quantity of the air pipe reaches the limit, the controller can automatically adjust the glass flow speed V to finally achieve the purpose of controlling the glass thickness, so that the glass thickness is controlled extremely badly.
It can be understood that, a person skilled in the art can design the detection, judgment and adjustment links in the above process according to the design parameters of the actual production equipment, and the scheme of automatically controlling the glass thickness according to the spirit of the present invention is within the protection scope of the present application.
This embodiment measures glass thickness data through thickness measuring equipment after, feeds back to former, and former passes through the tuber pipe wind speed that the abnormal point of thickness adjustment corresponds, and after the limit was adjusted to the tuber pipe wind speed, then the glass velocity of flow adjusted to reach the purpose of control glass thickness, this accommodation process is rapid and accurate, stable data that can be quick, control glass thickness extremely poor, thereby promote the production product yield, improve production efficiency.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. An automatic glass thickness control method for controlling the thickness of glass produced in a glass forming apparatus, the automatic glass thickness control method comprising:
obtaining the thickness of the glass currently produced;
and when the glass thickness is not in the preset range, controlling the air speed of the forming air pipe and/or the glass flow rate to control the glass thickness.
2. The method of claim 1,
and controlling the air speed of the forming air pipe and/or the glass flow velocity thickness according to the formula H-a × V1 × b × V2 to control the glass thickness, wherein V1 is the air speed of the forming air pipe, V2 is the glass flow velocity, and a and b are preset coefficients.
3. The method of claim 1, wherein controlling the profiled duct air velocity and/or glass flow velocity thickness to control the glass thickness comprises:
firstly, adjusting the air speed of the forming air pipe to control the thickness of the glass;
and when the air speed of the forming air pipe reaches an adjusting limit, if the glass thickness is still not in a preset range, adjusting the glass flow rate to control the glass thickness.
4. The method of claim 1, wherein the forming air line air speed and the glass flow rate are automatically controlled by an operating system of the glass forming apparatus.
5. The method of claim 1, wherein the glass thickness is measured by a laser in-line thickness gauge.
6. The utility model provides a glass thickness automatic control device for glass former, its characterized in that, glass thickness automatic control device includes:
the forming air pipe is used for blowing the glass liquid flowing to the forming air pipe position through the glass channel in a preset mode so as to enable the glass liquid to be preliminarily formed into a preset shape;
a glass flow rate control system for controlling the glass flow rate in the glass channel;
the thickness measuring equipment is used for measuring the thickness of the glass produced by the glass forming equipment in real time;
and the controller is used for controlling the air speed of the forming air pipe and/or the glass flow rate so that the glass thickness detected by the thickness measuring equipment is within a preset range.
7. The apparatus of claim 6, wherein the controller controls the glass thickness according to the formula H-a x V1 x b x V2, where a, b are preset coefficients, H is the glass thickness, V1 is the wind speed of the shaping air duct, and V2 is the glass flow rate.
8. The apparatus of claim 6, wherein the thickness measuring device is a laser in-line thickness gauge.
9. The apparatus of claim 6, wherein the controller first adjusts the air velocity of the shaping air duct and when the air velocity of the shaping air duct has reached an adjustment limit, if the glass thickness is still not within a predetermined range, then adjusts the glass flow rate to control the glass thickness to be within the predetermined range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210745266.3A CN115108711A (en) | 2022-06-28 | 2022-06-28 | Method and device for automatically controlling glass thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210745266.3A CN115108711A (en) | 2022-06-28 | 2022-06-28 | Method and device for automatically controlling glass thickness |
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| CN115108711A true CN115108711A (en) | 2022-09-27 |
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| CN202210745266.3A Pending CN115108711A (en) | 2022-06-28 | 2022-06-28 | Method and device for automatically controlling glass thickness |
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