A substrate glass raw material weighing system and method

Abstract

This invention discloses a substrate glass raw material weighing system and method to overcome the shortcomings of existing technologies that easily lead to overfeeding and exceeding tolerances. The method employs a reducing weighing principle, weighing a fixed quantity of raw material, discharging a set weight of raw material, obtaining the remaining weight of raw material, and replenishing it to the fixed quantity for the next weighing. The system includes an electronic scale weighing unit, a feeding butterfly valve, a feeding device, and a control unit. All components are signal-connected, and the control unit executes the method steps. By maintaining a raw material reference within the scale and accurately replenishing the material, closed-loop control of the weighing process is achieved, effectively avoiding overfeeding and exceeding tolerances.

Description

Technical Field

[0001] This invention relates to the field of glass substrates, specifically to a weighing system and method for substrate glass raw materials. Background Technology

[0002] In the field of TFT-LCD glass substrate manufacturing, precise control of glass composition is crucial to product performance, thus requiring extremely high raw material weighing accuracy. Glass raw materials are mostly in the form of fine powder with tiny particle sizes, but there are significant differences in the flowability of natural and chemical raw materials: natural raw materials have good flowability, while chemical raw materials tend to agglomerate and have poor flowability. In existing batching and weighing processes, for raw materials with poor flowability, methods such as bottom air blowing or stirring are often used to promote feeding. However, these methods easily lead to overfeeding and exceeding the allowable error range; even for raw materials with good flowability, the same overfeeding phenomenon can occur. Overfeeding often requires manual intervention for correction, which not only prolongs weighing time but also increases the batching cycle, severely restricting production efficiency. Therefore, existing weighing methods are significantly insufficient in addressing differences in raw material flowability and reducing overfeeding, necessitating a high-precision, automated weighing technology to improve batching accuracy and efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a substrate glass raw material weighing system and method to overcome the shortcomings of the prior art, which is prone to over-feeding and exceeding tolerance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a method for weighing substrate glass raw materials, comprising the following steps: Add raw materials to the electronic scale to the preset weight; Open the discharge butterfly valve to discharge the raw material of the set weight from the electronic scale body; After the set weight of raw materials is discharged, the weight of the remaining raw materials inside the electronic scale is obtained; Add raw materials to the electronic scale to restore it to the stated quantitative level, so that weighing and discharging can be performed again.

[0005] According to one embodiment of the present invention, when the discharge butterfly valve is opened for material discharge, the discharge weight of the raw material is monitored in real time, and the opening degree of the discharge butterfly valve is adjusted according to the discharge weight.

[0006] According to one embodiment of the present invention, when opening the discharge butterfly valve for material discharge, the method further includes: when it is necessary to process easily agglomerated raw materials, activating the air hammer installed on the electronic scale body to strike the electronic scale body.

[0007] According to one embodiment of the present invention, when adding raw materials into the electronic scale body, the feeding speed of the added raw materials is controlled by a frequency converter.

[0008] According to one embodiment of the present invention, the raw material discharged from the electronic scale body is conveyed to the next process via a vibrating feeder or a screw feeder.

[0009] According to one embodiment of the present invention, the transmission rate of the vibrating feeder or screw feeder is set according to the density and properties of the raw material.

[0010] The present invention also provides a substrate glass raw material weighing system for implementing the above-described substrate glass raw material weighing method, comprising: The electronic scale weighing unit includes a scale body and a pressure sensor for weighing and monitoring the weight of raw materials; a discharge butterfly valve is located at the bottom of the scale body for controlling the discharge of raw materials. A feeding device for receiving raw materials discharged from the discharge butterfly valve; The control unit, which is signal-connected to the electronic scale weighing unit, the discharge butterfly valve, and the feeding device, is configured to perform the steps of the method.

[0011] According to one embodiment of the present invention, the control unit is further configured to: adjust the opening degree of the discharge butterfly valve according to the feedback of the electronic scale weighing unit during the discharge process.

[0012] According to one embodiment of the present invention, a pneumatic hammer is also included, which is installed on the side wall or bottom of the scale body and connected to the control unit.

[0013] According to one embodiment of the present invention, the device further includes a frequency converter and a feeder for replenishing materials to the weighing body, wherein the control unit controls the operating speed of the feeder through the frequency converter.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: This invention provides a method for weighing substrate glass raw materials, which overcomes the shortcomings of existing technologies that are prone to overfeeding and exceeding tolerances by employing a unique reduction-weighting mode. This method retains a portion of the raw material in the weighing body after each discharge, forming a continuous weighing basis and avoiding systematic errors caused by starting from zero each time. By obtaining the weight of the remaining raw material and accurately replenishing it to the specified quantity, precise fine-tuning based on the existing quantity is achieved instead of complete refeeding, fundamentally eliminating overfeeding caused by differences in raw material flowability. This method establishes a closed-loop control logic for weighing, discharging, and replenishing, ensuring that each weighing is performed within a controllable range, significantly improving weighing accuracy and effectively solving the technical problem of overfeeding and exceeding tolerances.

[0015] This invention also provides a substrate glass raw material weighing system for implementing the aforementioned substrate glass raw material weighing method. This system effectively overcomes the overfeeding and over-tolerance problems through the coordinated configuration of its functional units: the electronic scale weighing unit monitors the raw material weight changes in real time, providing accurate weight data to the control unit; the discharge butterfly valve is located at the bottom of the scale body, enabling precise opening and closing control of the discharge process; the control unit establishes a closed-loop control mechanism of "weighing-discharge-replenishment" by executing the steps of the reduction weighing method. All units are connected by signals to form an organic whole, ensuring that the system always accurately replenishes materials based on the remaining weight of the raw material in the scale body, avoiding the overfeeding phenomenon caused by traditional weighing methods that start from zero each time, thus ensuring the stability of weighing accuracy from the system structure level. Attached Figure Description

[0016] Figure 1 This is a flowchart of a method for weighing substrate glass raw materials in an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the overall structure of a substrate glass raw material weighing system according to an embodiment of the present invention.

[0018] In the diagram, 1 is the feed inlet; 2 is the pressure sensor; 3 is the air hammer; 4 is the electronic scale body; 5 is the raw material; 6 is the feed butterfly valve; and 7 is the screw feeder. Detailed Implementation

[0019] In the weighing process of TFT-LCD glass substrate raw materials, the significant differences in the flowability of the raw materials, especially the tendency of chemical raw materials to agglomerate, lead to widespread over-feeding and over-tolerance problems in existing weighing methods. This not only requires frequent manual intervention for correction but also prolongs the batching cycle, seriously affecting production efficiency. Therefore, there is an urgent need for a weighing method that can effectively reduce over-tolerance and improve weighing accuracy and efficiency.

[0020] Based on the above background, this invention proposes a substrate glass raw material weighing system and method. By employing a subtractive weighing method, a portion of the raw material remains in the electronic scale after each discharge, avoiding the over-feeding phenomenon that easily occurs in existing technologies where weighing starts from zero each time. By obtaining the remaining weight and accurately replenishing the raw material accordingly, each weighing is based on fine-tuning of the existing quantity, rather than completely re-feeding, significantly reducing the error of a single weighing. The coordinated work of the control system and the weighing unit achieves precise control of the discharge and replenishment process, effectively solving the over-feeding and error-exceeding problem caused by differences in the flowability of raw materials at the methodological level.

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0025] Reference Figure 1 The image shows a specific embodiment of the substrate glass raw material weighing method provided by the present invention, which includes the following steps: Add 5g of raw material to the electronic scale body to the preset weight; Open the discharge butterfly valve 6 to discharge the raw material 5 of the set weight from the electronic scale body; After the set weight of raw material 5 is discharged, the weight of the remaining raw material 5 in the electronic scale body is obtained; Add raw material 5 into the electronic scale body to restore it to the stated quantitative quantity, so that weighing and discharging can be performed again.

[0026] In this specific embodiment, the electronic scale body serves as the load-bearing and weighing container for the raw material 5, and the weight data of the raw material 5 is acquired in real time through the pressure sensor 2 installed inside it. A discharge butterfly valve 6 is installed at the outlet position at the bottom of the electronic scale body, and its opening and closing status is controlled to precisely manage the discharge process of the raw material 5. After the set weight of raw material 5 has been discharged, a portion of raw material 5 remains in the electronic scale body. At this time, the accurate weight value of the remaining raw material 5 is obtained through the weighing system. This weight data provides a precise reference for subsequent replenishment operations, enabling the system to calculate and replenish the appropriate amount of raw material 5 according to actual needs, until the preset quantitative state is restored.

[0027] This implementation establishes a cyclical working mode of weighing, discharging, and replenishment, in which each link is closely connected and mutually supportive. The electronic scale provides accurate weight feedback, the discharging butterfly valve 6 ensures controlled discharging, and the replenishment mechanism based on the remaining weight constitutes the core innovation of the system. By maintaining a constant reference of raw material 5 within the electronic scale, this solution effectively avoids the inertial overfeeding problem caused by starting the scale empty, which is common in traditional weighing methods. Simultaneously, through precise measurement and targeted replenishment of the remaining raw material 5, it significantly reduces the probability of cumulative errors, thereby improving the overall accuracy and stability of the weighing process.

[0028] Another specific embodiment of the present invention provides a method for weighing substrate glass raw materials, specifically a method for weighing TFT-LCD glass substrate raw materials with reduced weight. This method achieves accurate weighing and discharge of raw material 5 through the coordinated operation of an electronic scale weighing system, a feeding butterfly valve 6, a control unit, and a vibrating feeder or screw feeder. This changes the out-of-tolerance phenomenon in traditional raw material weighing processes and improves the accuracy of batching and weighing. In this specific embodiment, the control unit is specifically a PLC control system, and the vibrating feeder or screw feeder is the feeding device in this embodiment. The method specifically includes the following steps: First, after the electronic scale weighing system is started, the raw material 5 enters the electronic scale body through the screw feeder or vibrating feeder at the bottom of the hopper. The electronic scale weighs the weight of the raw material 5 falling into the scale body. At the same time, the frequency converter controls the feeding speed of the raw material 5. The pressure sensor 2 monitors in real time and displays the actual weighing value of the raw material 5 on the electronic scale. When the weight of the raw material 5 reaches the preset weight, the feeding of the raw material 5 stops, the electronic scale weighing ends, and the quantitative storage of the raw material 5 in the scale body is completed. Secondly, the control unit first activates the vibratory feeder or screw feeder for receiving raw material 5, and then controls the opening of the discharge butterfly valve 6 to discharge the material. During the discharge process, the electronic scale starts and accurately weighs the raw material 5, and monitors the discharged weight of the raw material 5 in real time. The control unit continuously adjusts the opening of the discharge butterfly valve 6 according to the discharged weight to control the discharge speed of the raw material 5. If the raw material 5 to be weighed is a material that is prone to agglomeration, the air hammer 3 installed on the electronic scale body is activated at the same time as the discharge butterfly valve 6 is opened to discharge the material. The air hammer 3 strikes the electronic scale body to solve the problem of discharging the material that is prone to agglomeration. The discharge butterfly valve 6 is a quick-opening valve similar to the flapping of butterfly wings, which is connected to the bottom of the electronic scale body through a flange.

[0029] Then, when the raw material 5 discharged through the discharge butterfly valve 6 reaches the set weight, the control unit controls the closing of the discharge butterfly valve 6 and simultaneously closes the vibrating feeder or screw feeder. The discharged raw material 5 is then conveyed to the next process, such as a conveyor belt, a mixing silo, or a mixer, via the vibrating feeder or screw feeder. This completes the accurate weighing and discharge of a single batch of raw material 5. The transmission rate of the vibrating feeder or screw feeder is set by the control unit according to the density and properties of the raw material 5. Specifically, fast transmission nodes and slow transmission nodes can be set to adapt to the transmission requirements of raw materials 5 with different characteristics. Finally, after the set weight of raw material 5 is discharged, a small amount of raw material 5 remains in the electronic scale. The electronic scale weighing system obtains the weight of the remaining raw material 5 in real time and calculates the weight of raw material 5 to be added according to the preset quantitative value. Then, the weighing and replenishment process is restarted. Raw material 5 is added to the electronic scale through the screw feeder or vibrating feeder at the bottom of the hopper. During the replenishment process, the feeding speed of raw material 5 is still controlled by the frequency converter until the weight of raw material 5 in the electronic scale is restored to the preset quantitative value, in preparation for the next start of the weighing and discharge process.

[0030] In a specific embodiment of the present invention, a substrate glass raw material weighing system is also provided to implement the substrate glass raw material weighing method described above, with reference to... Figure 2 As shown, the system includes: The electronic scale weighing unit includes a scale body and a pressure sensor 2, used to weigh and monitor the weight of the raw material 5; The feeding butterfly valve 6 is located at the bottom of the scale body and is used to control the discharge of raw material 5; A feeding device is used to receive the raw material 5 discharged from the discharge butterfly valve 6; The control unit, which is signal-connected to the electronic scale weighing unit, the discharge butterfly valve 6, and the feeding device, is configured to perform the steps of the method.

[0031] In this specific embodiment, the electronic scale weighing unit constitutes the basic weighing module of the system. The scale body serves as the container for the raw material 5, and the pressure sensor 2 monitors the weight changes of the raw material 5 in real time and transmits the data to the control unit. The discharge butterfly valve 6 is located at the bottom outlet of the scale body, and its opening and closing state directly controls the discharge process of the raw material 5. The feeding device receives the raw material 5 discharged from the discharge butterfly valve 6 and transports it to the next process. The control unit, as the core control component of the system, achieves coordinated control of each actuator through signal connections established with the electronic scale weighing unit, the discharge butterfly valve 6, and the feeding device.

[0032] The various components of this system form an organic whole through centralized scheduling by the control unit. The electronic scale weighing unit provides accurate weight feedback, the discharge butterfly valve 6 performs precise discharge control, the feeding device ensures smooth material transfer, and the control unit establishes a complete closed-loop control mechanism by executing the steps of the reduction weighing method. This system architecture ensures that the weighing process is always under control, and by maintaining the reference of the raw material 5 within the scale and accurately replenishing it, it effectively solves the problem of overfeeding and exceeding tolerance at the system hardware level. The coordinated work between the components enables the system to adapt to the weighing requirements of raw materials 5 with different flowability, ensuring weighing accuracy and stability.

[0033] To make the substrate glass raw material weighing system and method provided by the present invention clearer, the following description will be based on actual usage.

[0034] In practical applications, this substrate glass raw material weighing system and method can be widely used for weighing TFT-LCD glass substrate raw materials, engineering glass raw materials, various glass batches, and other raw materials requiring precise weighing. Taking the weighing of TFT-LCD glass substrate raw materials as an example, before operation, based on the density, flowability, and tendency to agglomerate of the raw material to be weighed, relevant parameters are preset through the control unit: setting the quantitative value of the raw material in the electronic scale body, the transmission rate of the vibrating feeder or screw feeder, the starting conditions of the air hammer 3, and the feeding speed gradient controlled by the frequency converter. Among them, the transmission rate of the vibrating feeder or screw feeder includes the switching node between fast and slow transmission, and the starting conditions of the air hammer 3 are only set for raw materials that are prone to agglomeration.

[0035] After the operation starts, the screw feeder or vibrating feeder at the bottom of the silo feeds the raw material to the electronic scale body according to the initial feeding speed set by the frequency converter. The pressure sensor 2 transmits the weight data of the raw material to the control unit in real time. When the weight is close to the quantitative value, the control unit controls the frequency converter to reduce the feeding speed to avoid overfeeding of raw material until the weight reaches the quantitative value and feeding stops. Then the control unit first starts the vibrating feeder or screw feeder and then opens the discharge butterfly valve 6. During the discharge process, the electronic scale monitors the discharged weight in real time. The control unit dynamically adjusts the opening of the discharge butterfly valve 6 according to the discharged weight: in the initial stage, a larger opening can be controlled to achieve rapid discharge. When the discharged weight is close to the set value, the opening is reduced to accurately control the discharge amount. If the raw material being weighed is easily agglomerated, such as certain powder raw materials, the control unit simultaneously starts the air hammer 3. The air hammer 3 periodically strikes the scale body to disperse the agglomerated raw material and ensure smooth discharge of the raw material.

[0036] When the discharged raw material reaches the set weight, the control unit immediately closes the discharge butterfly valve 6 and the vibrating feeder or screw feeder. The discharged raw material is then transported to the mixer via the feeding device. At this time, the electronic scale displays the weight of the remaining raw material in the scale body. The control unit calculates the amount of raw material to be added based on the difference between the remaining weight and the quantitative value, and restarts the feeding device at the bottom of the hopper. The feeding speed is controlled by the frequency converter until the raw material in the scale body returns to the quantitative value. The system then enters standby mode, waiting for the next weighing command.

[0037] In continuous production operations, the system can perform weighing, discharging, and replenishing operations in a cyclical manner according to the above process. The electronic scale weighing unit monitors the weight of the raw materials in real time throughout the process, and the control unit ensures the accuracy of parameters at each stage through closed-loop control. This effectively avoids the inertial overfeeding problem caused by starting an empty scale in traditional weighing methods. At the same time, the system is designed to adapt to raw materials with different characteristics, such as anti-agglomeration of the air hammer, variable speed transmission and feeding, which further improves the weighing accuracy and system applicability, meeting the stringent requirements for the accuracy of raw material proportioning in glass substrate production.

[0038] This invention provides a substrate glass raw material weighing system and method, which addresses the actual needs and common problems in the weighing process of TFT-LCD glass substrate raw materials. It constructs a comprehensive solution through multi-dimensional targeted technical design, and its specific beneficial effects are as follows: First, it can efficiently adapt to the weighing needs of different flowable raw materials. In the weighing of glass substrate raw materials, the physical properties of natural raw materials and chemical raw materials are significantly different. Natural raw materials usually have good flowability, while chemical raw materials are prone to agglomeration, which leads to poor flowability. The compatibility problem between the two types of raw materials often affects the stability of weighing. This solution addresses this issue precisely: on the one hand, the control unit sets the transmission rate of the vibratory feeder or screw feeder according to the density and properties of the raw material 5, and the transmission rate includes fast and slow speed nodes. For natural raw materials with good flowability, fast transmission can be used to improve work efficiency, while for raw materials with poor flowability, slow transmission is switched to avoid control inaccuracies caused by excessively fast feeding. On the other hand, to address the problem of agglomeration of chemical raw materials, a hammer 3 striking mechanism is specially added. During the material discharge process, the hammer 3 periodically strikes the electronic scale body to break up the agglomerated raw material 5, preventing poor feeding or fluctuating discharge volume due to the agglomeration of raw material 5, and ultimately achieving stable weighing of various raw materials 5.

[0039] Secondly, this solution addresses the root cause of overfeeding and exceeding tolerances during the weighing process. In traditional raw material 5 weighing operations, auxiliary methods such as bottom air blowing or stirring are often used to address the feeding problem of raw materials with poor flowability. However, these methods easily disrupt the balance of the weighing system, leading to the actual feeding amount far exceeding the allowable error range. Even for raw materials with good flowability, insufficient control precision can result in exceeding tolerances. This solution resolves this problem through a dual precision control mechanism: First, during the feeding stage, a frequency converter controls the feeding speed of raw material 5. When the weight of raw material 5 approaches the preset quantitative value, the frequency converter automatically reduces the feeding speed to avoid overfeeding caused by the inertial "rush" of raw material 5. Second, during the discharging stage, an electronic scale monitors the discharged weight of raw material 5 in real time. The control unit dynamically adjusts the opening of the discharging butterfly valve 6 based on the monitoring data. Initially, a larger opening can be maintained for rapid discharging. When the discharged weight approaches the set value, the opening is gradually reduced for precise control, completely avoiding discharging deviations caused by a fixed valve opening and ensuring that the actual feeding amount strictly meets the error requirements.

[0040] Meanwhile, this solution significantly reduces manual intervention and shortens the overall batching cycle. In conventional weighing processes, overfeeding or exceeding tolerances often requires manual intervention to pause operations for correction, increasing labor costs and extending the time spent on each weighing, thus lengthening the entire batching cycle and impacting production efficiency. This solution constructs a fully automated closed-loop control system using a PLC control unit. From the start-up of raw material replenishment (5), real-time monitoring of the discharge process, and adjustment of the opening of the discharge butterfly valve (6), to the on-demand start-up of the air hammer (3) and the start-up and shutdown of the feeding device, all operations require no manual intervention. The system can autonomously adjust parameters and switch processes based on real-time weight data. Furthermore, the system adopts a "weighing-discharge-replenishment" cyclical working mode, eliminating the need for empty scale restarts before each weighing, as in traditional methods. This significantly shortens the interval between weighings, and combined with the reduced human waiting time due to fully automated operation, it significantly improves batching efficiency and effectively alleviates the problem of production rhythm constraints.

[0041] Furthermore, this solution provides reliable assurance for the precise control of glass substrate composition. In the manufacturing process of TFT-LCD glass substrates, the accuracy of glass composition directly affects the performance of the final product. Insufficient precision in the weighing process often leads to deviations in the raw material 5 ratio from the preset formula, thus adversely affecting product quality. This solution utilizes the pressure sensor 2 of the electronic scale weighing unit to capture real-time weight changes of raw material 5, the control unit to dynamically adjust valve opening and transmission rate, and the air hammer 3 designed to prevent agglomeration of the easily agglomerated raw material 5. These three elements work synergistically to control weighing errors within a minimal range, ensuring that the amount of raw material 5 fed in each batch accurately matches the production formula requirements. Starting from the fundamental step of raw material 5 weighing, this solution provides crucial support for the stable control of composition during glass substrate manufacturing, further ensuring the consistency of product performance.

[0042] In summary, this solution, through multi-dimensional targeted technical design, comprehensively addresses practical problems such as difficulty in adapting raw material 5 to flowability, over-weighing and excessive weighing, frequent manual intervention, low production efficiency, and insufficient weighing accuracy. It provides a technical solution for weighing TFT-LCD glass substrate raw material 5 that combines high precision, high automation, and high adaptability. In actual production applications, it can effectively improve operational stability and efficiency, and has significant practical value and industrial promotion significance.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for weighing substrate glass raw materials, characterized in that, Includes the following steps: Add raw material (5) to the electronic scale body to the preset weight; Open the discharge butterfly valve (6) to discharge the material, and discharge the raw material (5) of the set weight from the electronic scale body; After the set weight of raw material (5) is discharged, the weight of the remaining raw material (5) in the electronic scale body is obtained; Add raw material (5) to the electronic scale body to restore it to the preset amount, so that weighing and discharging can be performed again.

2. The method for weighing substrate glass raw materials according to claim 1, characterized in that, When the discharge butterfly valve (6) is opened to discharge material, the discharge weight of the raw material (5) is monitored in real time, and the opening degree of the discharge butterfly valve (6) is adjusted according to the discharge weight.

3. The method for weighing substrate glass raw materials according to claim 2, characterized in that, When opening the discharge butterfly valve (6) to discharge material, the method further includes: When it is necessary to process easily agglomerated raw materials (5), start the air hammer (3) installed on the electronic scale body to strike the electronic scale body.

4. The method for weighing substrate glass raw materials according to claim 1, characterized in that, When the raw material (5) is added to the electronic scale body, the feeding speed of the raw material (5) is controlled by the frequency converter.

5. The method for weighing substrate glass raw materials according to claim 1, characterized in that, The raw material (5) discharged from the electronic scale body is transported to the next process via a vibrating feeder or a screw feeder.

6. The method for weighing substrate glass raw materials according to claim 5, characterized in that, The transmission rate of the vibrating feeder or screw feeder is set according to the density and properties of the raw material (5).

7. A substrate glass raw material weighing system for implementing the substrate glass raw material weighing method as described in any one of claims 1-6, characterized in that, include: The electronic scale weighing unit includes a scale body and a pressure sensor (2) for weighing and monitoring the weight of the raw material (5); A discharge butterfly valve (6) is installed at the bottom of the weighing body to control the discharge of raw materials (5); A feeding device for receiving raw material (5) discharged from the discharge butterfly valve (6); The control unit, which is signal-connected to the electronic scale weighing unit, the discharge butterfly valve (6), and the feeding device, is configured to perform the steps of the method.

8. The substrate glass raw material weighing system according to claim 7, characterized in that, The control unit is also configured to adjust the opening of the discharge butterfly valve (6) according to the feedback from the electronic scale weighing unit during the discharge process.

9. The substrate glass raw material weighing system according to claim 7, characterized in that, It also includes an air hammer (3) installed on the side wall or bottom of the scale body, which is connected to the control unit.

10. A substrate glass raw material weighing system according to claim 7, characterized in that, It also includes a frequency converter and a feeder for replenishing materials to the weighing body, and the control unit controls the operating speed of the feeder through the frequency converter.

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