Automatic channel flow control system and method

Abstract

The invention discloses an automatic channel flow control system and method, and relates to the technical field of automatic control, and the system comprises a charge bar lifting device which at least comprises a charge bar supporting platform and a charge bar vertically and downwards arranged on the charge bar supporting platform; the discharging openings are formed below the charge bar supporting platform, the lower ends of the charge bars ascend and descend in the first discharging opening along with ascending and descending of the charge bar supporting platform, and a gap between the lower ends of the charge bars and the second discharging opening forms a glass liquid runner with a variable sectional area; the weighing device is arranged below the discharging opening; and the control device is in communication connection with the weighing device, the first servo motor and the second servo motor and is used for driving the first servo motor and the second servo motor according to the weighing value of the weighing device. The automatic control of the flow of the molten glass is realized by automatically controlling the lifting of the charge bar, the fluctuation of the flow of the molten glass can be reduced, and the stability of flow control is improved, so that the quality stability of glass products is improved.

Description

Technical Field

[0001] The present application relates to the field of automated control technology, and in particular to a channel flow automatic control system and method. Background Art

[0002] In the glass manufacturing industry, precise control of molten glass flow plays a vital role in product quality and production efficiency. The glass production process is a complex process chain. From raw material melting to molding, flow control directly affects the quality of the final product. During the molding stage, if the molten glass flow is unstable, it will lead to uneven product thickness, large dimensional deviations, and even defects such as bubbles and flaws, which will seriously affect product quality and yield rate.

[0003] Currently, manual control is mainly used to control the flow rate of the glass channel. However, manual control relies on the experience and skills of the operator, and is subject to significant interference from human factors. The differences in operating habits and proficiency among different operators make it difficult to maintain stable and accurate flow control. In actual production, manual adjustment often has a lag and cannot respond to minor changes in the production process in a timely manner, resulting in frequent fluctuations in the glass liquid flow rate, which in turn affects the stability of product quality.

[0004] The above content is only used to assist in understanding the technical solution of this application and does not constitute an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of this application is to provide a channel flow automatic control system and method, aiming to solve the technical problem that manual control of glass channel flow has poor stability and affects the quality of glass products.

[0006] To achieve the above objectives, the present application proposes a channel flow automatic control system, comprising:

[0007] The material bar lifting device includes a material bar support platform, a material bar vertically arranged on the material bar support platform, a first precision screw and a second precision screw connected to both ends of the material bar support platform respectively, a first servo motor connected to the first precision screw, and a second servo motor connected to the second precision screw; the first servo motor and the second servo motor are used to drive the material bar support platform to rise and fall;

[0008] a discharge port, the discharge port being arranged below the material rod support platform and the material rod, the discharge port comprising a first discharge port and a second discharge port connected from top to bottom, the maximum discharge width of the first discharge port being greater than the maximum discharge width of the second discharge port; as the material rod support platform is raised or lowered, the lower end of the material rod is raised or lowered inside the first discharge port, and a gap between the lower end of the material rod and the second discharge port forms a glass liquid flow channel with a variable cross-sectional area;

[0009] a weighing device, the weighing device being used to weigh the molded product discharged from the discharge port;

[0010] A control device is communicatively connected with the weighing device, the first servo motor and the second servo motor, and is used to drive the first servo motor and the second servo motor according to the weighing value of the weighing device.

[0011] In one embodiment, the material bar lifting device further includes a first reducer connected to the first servo motor, and the first reducer is in communication with the control device; the control device is further configured to drive the first reducer to control the output speed of the first servo motor;

[0012] The material rod lifting device also includes a second reducer connected to the second servo motor, and the second reducer is in communication with the control device; the control device is also used to drive the second reducer to control the output speed of the second servo motor.

[0013] In one embodiment, a material rod rotating motor and a rotating reducer connected in sequence are provided on the material rod supporting platform, the material rod rotating motor is connected to the material rod via a coupling, and the material rod rotating motor and the rotating reducer are respectively in communication connection with the control device;

[0014] The control device is also used to control the material rod rotating motor to drive the material rod to rotate;

[0015] The control device is also used to drive the rotation reducer to control the output speed of the material rod rotation motor.

[0016] In one embodiment, the lower end of the material rod is cylindrical; the first discharge port and the second discharge port are circular;

[0017] The diameter of the cylinder is smaller than the diameter of the first discharge port, and the diameter of the cylinder is greater than or equal to the diameter of the second discharge port.

[0018] In one embodiment, the lower end of the material rod is made of refractory material or precious metal material;

[0019] The discharge port is made of refractory material or precious metal material.

[0020] In one embodiment, an upper limit structure and a lower limit structure are respectively provided at both ends of the first precision screw;

[0021] The control device is further configured to control the first servo motor and the second servo motor to stop running when the material rod lifting device reaches the upper limit structure or the lower limit structure.

[0022] In addition, to achieve the above-mentioned purpose, the present application also proposes a channel flow automatic control method, which is applied to the control device in the channel flow automatic control system as described above, and the channel flow automatic control method includes:

[0023] Obtaining the mass of the molded product weighed by a weighing device, and determining the flow rate of the molten glass based on the mass of the molded product, wherein the mass of the molded product is the mass of the molded product discharged from the discharge port;

[0024] determining a flow deviation based on the glass liquid flow rate and a preset target flow rate;

[0025] An adjustment instruction is generated based on the flow deviation, and the first servo motor is controlled to drive the first precision screw to move up and down based on the adjustment instruction, and the second servo motor is controlled to drive the second precision screw to move up and down based on the adjustment instruction.

[0026] In one embodiment, the step of generating an adjustment instruction based on the flow deviation includes:

[0027] Inputting the flow deviation into a preset flow-height model to obtain an adjustment height and an adjustment direction;

[0028] An adjustment instruction is generated based on the adjustment height and the adjustment direction.

[0029] In one embodiment, after the steps of controlling the first servo motor to drive the first precision lead screw to move up and down based on the adjustment instruction, and controlling the second servo motor to drive the second precision lead screw to move up and down based on the adjustment instruction, the method further includes:

[0030] When it is detected that the height of the nut of the first precision screw reaches the upper limit structure of the first precision screw, or the height of the nut of the first precision screw reaches the lower limit structure of the first precision screw, a stop operation instruction is generated and the first servo motor and the second servo motor are controlled to stop running based on the stop operation instruction.

[0031] In one embodiment, the channel flow automatic control method further includes:

[0032] The material rod rotating motor and the rotating reducer on the material rod supporting platform are controlled to drive the material rod to rotate at a preset speed.

[0033] This application proposes an automatic channel flow control system, specifically comprising: a material bar lifting device comprising a material bar support platform, a material bar mounted vertically on the material bar support platform, a first and a second precision screw connected to the ends of the material bar support platform, a first servo motor connected to the first precision screw, and a second servo motor connected to the second precision screw; the first precision screw connected to the material bar support platform via a first screw nut, and the second precision screw connected to the material bar support platform via a second screw nut; a discharge port disposed below the material bar support platform and the material bar, comprising a first discharge port and a second discharge port connected from top to bottom, the maximum discharge port width of the first discharge port being greater than the maximum discharge port width of the second discharge port; a weighing device for weighing the molded product discharged from the discharge port; and a control device in communication with the weighing device, the first servo motor, and the second servo motor, for driving the first servo motor and the second servo motor based on the weighing value of the weighing device.

[0034] In the present application, the control device drives the first servo motor and the second servo motor according to the glass liquid weighing value weighed by the weighing device. The servo motor drives the screw of the precision screw to rotate, and the screw nut moves up and down with the rotation of the screw, thereby controlling the lifting and lowering of the material rod support platform. The material rod rises and falls with the lifting and lowering of the material rod support platform, and a gap is formed between the lower end of the material rod and the second discharge port. The gap is the glass liquid flow channel. Since the diameter of the first discharge port is larger than the diameter of the second discharge port, the distance of the gap changes with the up and down movement of the material rod, that is, the cross-sectional area of the glass liquid flow channel changes. Specifically, the material rod support platform rises, the material rod rises accordingly, the gap between the lower end of the material rod and the second discharge port increases, and the glass liquid flow rate increases; the material rod support platform descends, the material rod descends accordingly, the gap between the lower end of the material rod and the second discharge port decreases, and the glass liquid flow rate decreases, so that the glass liquid flow rate at the discharge port changes with the lifting and lowering of the material rod. Therefore, the automatic control system of the present application realizes automatic control of the glass liquid flow by automatically controlling the lifting and lowering of the material rod. Compared with manual flow control, the present application can reduce the fluctuation of the glass liquid flow, improve the stability of flow control, and thus improve the quality stability of glass products. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 A schematic diagram of the structure of a channel flow automatic control system provided in one embodiment of the present application;

[0038] Figure 2 A schematic diagram of the application structure of the channel flow automatic control system provided in one embodiment of the present application;

[0039] Figure 3 This is a schematic diagram of a scenario of an embodiment of the channel flow automatic control method of the present application;

[0040] Figure 4 A flow chart illustrating a first embodiment of the method for automatically controlling channel flow in this application;

[0041] Figure 5 Another flow chart of the first embodiment of the automatic channel flow control method of the present application is provided;

[0042] Description of Figure Numbers:

[0043] 100, channel flow automatic control system; 101, material bar lifting device; 102, 100, channel flow automatic control system; 102, material outlet; 103, weighing device; 104, control device;

[0044] A1, material rod support platform; A2, material rod; A3, first precision screw; A301, upper limit structure of first precision screw; A302, lower limit structure of first precision screw; A4, second precision screw;

[0045] A5, first servo motor; A6, second servo motor; A7, rod rotating motor; A8, rotating reducer; A9, coupling; A10, first reducer; A11, second reducer;

[0046] B1, first discharge port; B2, second discharge port.

[0047] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0049] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0050] Since the existing technology mainly uses manual control to control the flow rate of the glass channel, however, the manual control method relies on the experience and skills of the operator, and is subject to large interference from human factors. The differences in operating habits and proficiency of different operators make it difficult to maintain stable and accurate flow control. In actual production, manual adjustment often has a lag and cannot respond to minor changes in the production process in a timely manner, resulting in frequent fluctuations in the glass liquid flow rate, which in turn affects the stability of product quality.

[0051] This application proposes an automatic channel flow control system, specifically comprising: a material bar lifting device comprising a material bar support platform, a material bar mounted vertically on the material bar support platform, a first and a second precision screw connected to the ends of the material bar support platform, a first servo motor connected to the first precision screw, and a second servo motor connected to the second precision screw; the first precision screw connected to the material bar support platform via a first screw nut, and the second precision screw connected to the material bar support platform via a second screw nut; a discharge port disposed below the material bar support platform and the material bar, comprising a first discharge port and a second discharge port connected from top to bottom, the maximum discharge port width of the first discharge port being greater than the maximum discharge port width of the second discharge port; a weighing device for weighing the molded product discharged from the discharge port; and a control device in communication with the weighing device, the first servo motor, and the second servo motor, for driving the first servo motor and the second servo motor based on the weighing value of the weighing device.

[0052] In the present application, a control device drives a first servo motor and a second servo motor based on the glass liquid weight value measured by the weighing device. The servo motor drives the screw of the precision screw to rotate, and the screw nut moves up and down as the screw rotates, thereby controlling the lifting and lowering of the material rod support platform. The material rod rises and falls with the lifting and lowering of the material rod support platform, forming a gap between the lower end of the material rod and the second discharge port. This gap is the glass liquid flow channel. Because the diameter of the first discharge port is larger than the diameter of the second discharge port, the distance of the gap changes as the material rod moves up and down, that is, the cross-sectional area of the glass liquid flow channel changes. Specifically, when the material rod support platform rises, the material rod rises accordingly, and the gap between the lower end of the material rod and the discharge port increases, increasing the glass liquid flow rate. When the material rod support platform descends, the material rod descends accordingly, and the gap decreases, decreasing the glass liquid flow rate. Therefore, the glass liquid flow rate at the discharge port changes as the material rod rises and falls. Thus, the automatic control system of the present application realizes automatic control of the glass liquid flow rate by automatically controlling the lifting and lowering of the material rod. Compared with manual flow control, the present application can reduce glass liquid flow fluctuations, improve the stability of flow control, and thus improve the quality stability of glass products.

[0053] Based on this, please refer to Figure 1 The embodiment of the present application provides a flow automatic control system 100, including: a material rod lifting device 101, including a material rod support platform A1, a material rod A2 vertically arranged on the material rod support platform, a first precision screw rod A3 and a second precision screw rod A4 respectively connected to the two ends of the material rod support platform, a first servo motor A5 connected to the first precision screw rod A3, and a second servo motor A6 connected to the second precision screw rod A4.

[0054] The material bar support platform is a horizontal support structure used to place material bars vertically. The material bars are fixed to the material bar support platform through specific fixing methods such as slots and clamps to ensure that the material bars can move stably during the platform lifting process.

[0055] The first and second precision screws are located at either end of the material rod support platform. The first precision screw is connected to the material rod support platform via a first screw nut. The first screw nut is fixedly attached to one end of the material rod support platform. When the first screw nut moves up and down, it drives that end of the material rod support platform synchronously. Similarly, the second precision screw is connected to the other end of the material rod support platform via a second screw nut, controlling the height of the other end of the material rod support platform.

[0056] The first servo motor is connected to the screw of the first precision lead screw. The output shaft of the first servo motor is connected to the screw of the first precision lead screw via a transmission component. When the first servo motor is running, it can drive the screw of the first precision lead screw to rotate. The first precision lead screw acts as a transmission component, converting the rotational motion of the first servo motor into linear motion of the first lead screw nut, causing the first lead screw nut to move up and down along the screw. Similarly, the second servo motor drives the screw of the second precision lead screw to rotate, adjusting the height of the second lead screw nut. The forward and reverse rotation and speed of the first and second servo motors can control the movement direction and speed of the first and second lead screw nuts during linear motion, thereby adjusting the height of the material rod support platform.

[0057] The discharge port 102 is disposed below the material rod support platform and the material rod. The discharge port comprises a first discharge port and a second discharge port connected from top to bottom. The maximum outlet width of the first discharge port is greater than the maximum outlet width of the second discharge port. As the material rod support platform rises and falls, the lower end of the material rod rises and falls within the first discharge port. The gap between the lower end of the material rod and the second discharge port forms a glass flow channel with a variable cross-sectional area. It should be noted that the shapes of the discharge port and material rod are not limited in this embodiment and can be configured according to actual needs.

[0058] The material rod is fixed vertically on the material rod support platform, and the discharge port is located below the material rod support platform. When the material rod support platform is driven by the first and second servo motors and the first and second precision screws and screw nuts to perform lifting and lowering movements, the material rod also moves up and down accordingly. Since the diameter of the first discharge port is larger than that of the second discharge port, a gap is formed between the lower end of the material rod and the second discharge port. This gap is the flow channel for the glass liquid to flow out. The change in the size of the gap directly leads to a change in the cross-sectional area of the glass liquid flow channel. The material rod support platform rises, and the material rod rises accordingly. The gap between the lower end of the material rod and the second discharge port increases, and the cross-sectional area of the flow channel increases accordingly. According to fluid mechanics, when other conditions remain unchanged, the flow rate of the fluid through the pipeline is proportional to the cross-sectional area of the pipeline. In this system, the glass liquid is a fluid, and its flow rate is affected by the cross-sectional area of the flow channel. Therefore, the cross-sectional area of the flow channel increases, the resistance of the glass liquid through the discharge port decreases, and the amount of glass liquid flowing out per unit time increases, that is, the glass liquid flow rate increases; the material rod support platform drops, and the material rod drops accordingly, the gap decreases, the cross-sectional area of the flow channel decreases, the resistance of the glass liquid through the discharge port increases, and the amount of glass liquid flowing out per unit time decreases, that is, the glass liquid flow rate decreases.

[0059] Weighing device 103 is installed directly below the discharge port and is used to weigh the molten glass flowing out of the discharge port in real time. The weighing device can be fixed in a suitable position by a bracket or other structure to ensure that it can accurately receive the molten glass flowing out of the discharge port. The weighing device monitors the weight of the molten glass flowing out of the discharge port in real time and transmits the weighing value data to the control device. The changes in the weighing value can reflect the size and stability of the molten glass flow rate, providing accurate feedback information to the control device.

[0060] Control device 104, such as Figure 1 As shown by the middle dotted line, the control device 104 is communicatively connected with the weighing device 103, the first servo motor A5 and the second servo motor A6. The specific connection mode can be a wired connection or a wireless connection, which is not limited here.

[0061] The control device receives the weighing data from the weighing device, analyzes and processes it, and determines whether the current glass melt flow rate is appropriate based on a preset flow rate standard. If the flow rate is too high or too low, the control device promptly sends corresponding control instructions to the first and second servo motors, driving the motors to operate and adjust the height of the rod support platform, thereby changing the cross-sectional area of the glass melt flow channel and restoring the glass melt flow rate to the appropriate range.

[0062] In this embodiment, a weighing device monitors the molten glass flow rate in real time. Based on this monitoring data, a control device automatically adjusts the height of the rod support platform, thereby changing the cross-sectional area of the molten glass flow path. This achieves automated regulation of the molten glass flow rate, improving the stability and control accuracy of the molten glass flow rate, reducing product quality issues caused by unstable flow rate, and improving the qualified rate and quality stability of glass products. Furthermore, automated control can improve production efficiency, reduce labor costs and labor intensity, and enable a more continuous and efficient glass production process.

[0063] In a feasible embodiment, the material rod lifting device also includes a first reducer connected to the first servo motor, and the first reducer is communicatively connected to the control device; the control device is also used to drive the first reducer to control the output speed of the first servo motor.

[0064] The material rod lifting device also includes a second reducer connected to the second servo motor, and the second reducer is in communication with the control device; the control device is also used to drive the second reducer to control the output speed of the second servo motor.

[0065] The reducer is connected between the servo motor and the precision screw, and receives instructions from the control device to adjust the output speed of the servo motor to meet different flow control requirements and achieve smooth lifting and lowering.

[0066] In a feasible embodiment, a material rod rotating motor and a rotating reducer connected in sequence are provided on the material rod supporting platform, the material rod rotating motor is connected to the material rod A2 through a coupling, and the material rod rotating motor and the rotating reducer are respectively communicated with the control device.

[0067] Under the control of the control device, the rod rotating motor starts, stops, and adjusts its speed. The rod rotating motor converts electrical energy into mechanical energy, outputting rotational power that drives the rotating reducer. The rotating reducer is connected between the rod rotating motor and the rod. It receives instructions from the control device and precisely adjusts the output speed to meet the rod rotation speed requirements of different production processes.

[0068] In one feasible embodiment, the lower end of the material rod A2 is cylindrical, and the first and second discharge ports are circular. The diameter of the cylinder is smaller than that of the first discharge port, ensuring that the material rod does not interfere with the first discharge port during the raising and lowering process. The diameter of the cylinder is greater than or equal to the diameter of the second discharge port, effectively reducing the effective flow area of the discharge port when the material rod descends and increasing it when it ascends, thereby achieving precise control of the glass liquid flow rate. It is understood that the cylinder and the circle have good symmetry. This simple and symmetrical structure is easy to manufacture, can ensure the precision and quality of the components, and also facilitates stable flow control during the production process.

[0069] In one feasible embodiment, the lower end of the feed rod is constructed of a refractory material or precious metal; the discharge port is also constructed of a refractory material or precious metal. In the hot, corrosive environment of molten glass, the refractory material or precious metal can withstand the high temperatures and resist corrosion from the molten glass, extending the service life of the feed rod and the discharge port. Furthermore, the shape stability of the lower ends of the feed rod and the discharge port is ensured, thereby ensuring accurate control of the cross-sectional area of the flow channel formed in conjunction with the discharge port, maintaining a stable flow rate of molten glass.

[0070] In one feasible embodiment, during the rod design phase, the length and shape of the portion of the rod's lower end that contacts the molten glass can be determined based on the flow characteristics of the molten glass, the structure of the discharge port, and the precision requirements for flow control. During actual production installation, the rod is mounted on a rod support platform, which is adjusted to a suitable position above the discharge port so that the cylindrical portion of the rod's lower end enters the discharge port to a certain depth. Through simulated molten glass flow tests, the flow of molten glass around the rod and the effectiveness of flow control are observed, and the height of the rod support platform is fine-tuned to determine the optimal contact position between the rod's lower end and the molten glass. Subsequently, the contact area of the rod's lower end is marked. This marked area represents the area where refractory material or precious metal is used. Compared to using refractory material or precious metal throughout the rod, this embodiment can reduce rod manufacturing costs.

[0071] In a feasible embodiment, a limiting structure is provided on the first precision screw and the second precision screw, and the limiting structure includes an upper limit structure and a lower limit structure. The control device is used to control the first servo motor and the second servo motor to stop running when receiving the trigger signal of the upper limit structure and the lower limit structure. It should be noted that there is no restriction on the setting position of the upper limit structure and the lower limit structure, and they can be set according to actual needs, wherein the upper limit structure and the lower limit structure can be both provided on the same precision screw, or can be respectively provided on different precision screws, or can be provided on both precision screws. In a feasible implementation manner, the upper limit structure and the lower limit structure can be respectively provided at both ends of the first precision screw, and the upper limit structure and the lower limit structure can also be respectively provided at both ends of the second precision screw to ensure the accuracy of the stop signal.

[0072] In one feasible embodiment, an upper limit structure A301 and a lower limit structure A302 are respectively provided at both ends of the first precision screw. The control device is further configured to control the first servo motor and the second servo motor to stop running when the material rod lifting device reaches the upper limit structure or the lower limit structure.

[0073] In this embodiment, an upper limit structure is located at the upper end of the first precision screw. When the bar lifting device approaches this position, the upper limit structure detects its position and sends a signal to the control device. This prevents the bar lifting device from rising too far, preventing the bar support platform and the bar from exceeding a safe range, potentially damaging the equipment or affecting production safety.

[0074] In this embodiment, the lower limit structure is set at the lower end position of the first precision screw. When the material rod lifting device descends to near this position, the lower limit structure will send a signal to the control device to prevent the material rod lifting device from descending excessively, protecting the equipment structure and avoiding collision and damage between the material rod and components such as the discharge port.

[0075] It should be noted that the setting of the upper limit structure and the lower limit structure avoids excessive movement of the first screw nut on the first precision screw, prevents the material rod support platform and the material rod from colliding and being damaged with other components, reduces the risk of equipment failure, and extends the service life of the equipment.

[0076] Furthermore, in a feasible embodiment, a gradual transition section is provided at the junction of the first discharge port and the second discharge port, and the longitudinal cross-section of the gradual transition section is conical or arc-shaped, so that the flow of the glass liquid is smoother, the flow resistance and energy loss are reduced, and unstable flow phenomena such as turbulence and eddy currents of the glass liquid are avoided at the junction, thereby ensuring the stability of the glass liquid flow rate.

[0077] For example, in order to help understand the application structure diagram of the channel flow automatic control system obtained by combining this embodiment with the above embodiment 1, please refer to Figure 2 , Figure 2 A simplified flow chart of a channel flow automatic control method is provided. The channel flow automatic control system 100 mainly consists of a material bar lifting device 101, a material outlet 102, a weighing device 103, and a control device 104. The specific structure is as follows:

[0078] The material rod lifting device 101 includes: a material rod support platform A1, which is used to vertically install the material rod A2. Its two ends are respectively connected to the first precision screw rod A3 and the second precision screw rod A4 through the first screw rod nut and the second screw rod nut, and can achieve smooth lifting and lowering driven by the screw rod to ensure precise adjustment of the material rod height.

[0079] The lower end of the material rod 102 is cylindrical, and the flow rate is controlled by changing the cross-sectional area of the flow channel in cooperation with the discharge port. The part of the lower end of the material rod 102 that contacts the glass liquid is made of refractory or precious metal materials to prevent corrosion, ensure structural stability and flow control accuracy.

[0080] The first precision screw A3 is connected to one end of the material rod support platform A1 via its nut, and the second precision screw A4 is connected to the other end of the material rod support platform A1 via its nut. An upper limit structure A301 and a lower limit structure A302, located at either end of the first precision screw, monitor the position of the first screw nut. When the first screw nut reaches the upper limit structure A301 or the lower limit structure A302, a sensor on the upper limit structure A301 or the lower limit structure A302 sends a signal to the control device 104, which in turn stops the first servo motor, preventing the material rod from being excessively raised or lowered and damaging the equipment, thereby ensuring safe operation of the system.

[0081] The first servo motor A5 is connected to the first precision lead screw A3, and the second servo motor A6 is connected to the second precision lead screw A4, providing power for the lead screws' rotation. The first and second reducers A10 and A11 are connected between the first and second servo motors A5 and A6, respectively, and their corresponding lead screws. They are used to reduce the motor's output speed and increase torque according to the control device's instructions, ensuring smoother platform lifting and lowering.

[0082] The rod-rotating motor A7 and the rotating reducer A8 are mounted on the rod-supporting platform and connected in sequence. The rod-rotating motor is connected to the rod A2 via coupling A9. The control device 104 controls the rod-rotating motor to rotate the rod and adjusts the motor's output speed by driving the rotating reducer, changing the flow state of the molten glass and assisting in flow control.

[0083] The discharge port 102 is located below the material rod support platform A1, and is composed of a first discharge port B1 and a second discharge port B2. The diameter of the first discharge port B1 is larger than that of the second discharge port B2. The part of the discharge port 102 that contacts the glass liquid is made of refractory or precious metal materials, which are resistant to high-temperature corrosion of the glass liquid to ensure structural stability. The discharge port 102 cooperates with the lower end of the material rod to form a variable cross-sectional area flow channel, which is a key part for controlling the flow rate of the glass liquid.

[0084] The weighing device 103 is installed below the discharge port 102 to measure the weight of the outflowing glass liquid in real time and transmit the data to the control device 104 to provide real-time feedback for flow regulation. It is an important data collection link for achieving precise flow control.

[0085] Control device 104, please refer to Figure 2 The dotted lines shown in FIG. 1 are used to indicate that the control device 104 is in communication with the weighing device 103, the upper limit structure A301 and the lower limit structure A302 of the first precision screw. Figure 3 In the schematic diagram of the scenario shown, the control device 104 receives the weighing data of the weighing device 103, calculates the flow deviation, generates control instructions according to the preset model and logic, and controls the actions of the first servo motor A5, the second servo motor A6, the first reducer A10, the second reducer A11, the material rod rotating motor A7 and the rotating reducer A8. At the same time, the control device 104 receives the signals of the upper limit structure A301 and the lower limit structure A302 to control the first servo motor A5, the second servo motor A6, the first reducer A10 and the second reducer A11 to stop according to the signals of the limit structure. Thus, this embodiment can realize automatic and precise control of the glass liquid flow, and at the same time receive the limit structure signal to ensure the safe operation of the system.

[0086] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, mobile phone, etc., or an electronic device capable of performing the above functions. The electronic device includes the control device in the channel flow automatic control system described above; or at least one processor, and a memory in communication with the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the channel flow automatic control method of the following embodiments. The following describes this embodiment and the following embodiments using the control device as an example.

[0087] Based on this, the embodiment of the present application provides a method for automatically controlling channel flow, referring to Figure 3 , Figure 3 This is a flow chart of the first embodiment of the channel flow automatic control method of the present application.

[0088] In this embodiment, the channel flow automatic control method includes steps S10 to S30:

[0089] Step S10, obtaining the mass of the molded product weighed by a weighing device, and determining the flow rate of the molten glass based on the mass of the molded product, wherein the mass of the molded product is the mass of the molded product discharged from the discharge port;

[0090] The quality of the molded product is the weight of the molded product made from the glass liquid flowing out of the discharge port within a certain period of time. The sensor of the weighing device senses the change in gravity during weighing and converts it into an electrical signal. The electrical signal is amplified, filtered, and processed before being transmitted to the control device.

[0091] After receiving the electrical signal, the control device converts it into the corresponding molded product mass value based on a pre-set conversion relationship. The control device also records the time interval between the acquisition of the molded product mass data and calculates the glass flow rate by calculating the ratio of the molded product mass to the time interval. For example, if the weighing device measures the molded product mass at 5 kg within 10 seconds, the glass flow rate is 5 kg ÷ 10 seconds = 0.5 kg / second.

[0092] It is understandable that by measuring the glass liquid flow rate, the actual situation of the glass liquid outflow can be understood in real time, providing a data basis for subsequent comparison and adjustment with the preset target flow rate.

[0093] Step S20, determining a flow rate deviation based on the glass liquid flow rate and a preset target flow rate;

[0094] The preset target flow rate is an ideal glass liquid flow value pre-set according to the requirements of the glass production process. It is the flow standard that the entire flow control system hopes to achieve. The specific value can be set according to the type of glass product, production speed, etc., and is not limited here. The control device compares the glass liquid flow rate with the preset target flow rate, and calculates the difference between the two through subtraction, that is, the flow deviation. It should be noted that the flow deviation can be the difference obtained by subtracting the target flow rate from the glass liquid flow rate, or it can be the difference obtained by subtracting the glass liquid flow rate from the target flow rate, and is not limited here.

[0095] It can be understood that the absolute value of the flow difference is the degree of deviation between the glass liquid flow rate and the target flow rate. The larger the absolute value of the flow difference, the greater the degree of deviation between the glass liquid flow rate and the target flow rate, and the greater the height adjustment degree of the first precision screw and the second precision screw. That is, the absolute value of the flow difference is directly proportional to the height adjustment value of the first precision screw and the second precision screw. If the glass liquid flow rate is less than the target flow rate, it means that the current flow rate is insufficient and the flow rate needs to be increased. Based on the variable cross-sectional area of the material rod and the discharge port in the channel flow automatic control system as described above, it can be known that the material rod should be raised, that is, the control device increases the height of the nut of the first precision screw and the nut of the second precision screw. Conversely, if the glass liquid flow rate is greater than the target flow rate, it means that the current flow rate is too large and the material rod should be lowered, that is, the control device lowers the height of the nut of the first precision screw and the nut of the second precision screw.

[0096] By comparing the actual flow rate with the preset target flow rate, the degree of deviation of the current flow rate can be clearly determined, providing data support for the subsequent generation of adjustment instructions, ensuring that the control device can make control decisions based on actual conditions.

[0097] Step S30: generating an adjustment instruction based on the flow deviation, and controlling the first servo motor to drive the first precision screw to move up and down based on the adjustment instruction, and controlling the second servo motor to drive the second precision screw to move up and down based on the adjustment instruction.

[0098] The adjustment instruction is a control signal generated by the control device based on the flow deviation, which is used to control the operating status of the first servo motor and the second servo motor, including parameters such as the motor speed and direction. The purpose of the adjustment instruction is to make the glass liquid flow rate approach the preset target flow rate.

[0099] The control device generates corresponding adjustment instructions according to the size and direction of the flow deviation. Specifically, if the actual flow is less than the preset target flow, the control device sends an instruction to make the first servo motor and the second servo motor rotate forward, drive the screws of the first precision lead screw and the second precision lead screw to rotate forward, drive the first lead screw nut and the second lead screw nut to rise, raise the material rod support platform, increase the gap between the material rod and the discharge port, increase the cross-sectional area of the glass liquid flow channel, and thus increase the glass liquid flow rate; conversely, if the actual flow is greater than the preset target flow, the control device sends an instruction to make the first servo motor and the second servo motor rotate in the opposite direction, drive the lead screw to rotate in the opposite direction, drive the lead screw nut to descend, lower the material rod support platform, reduce the cross-sectional area of the glass liquid flow channel, and reduce the glass liquid flow rate; the greater the flow deviation, the greater the motor speed adjustment range, so as to make the glass liquid flow rate close to the preset target flow rate as soon as possible.

[0100] By generating adjustment instructions based on flow deviation and controlling the coordinated action of the servo motor, precision screw and screw nut, the cross-sectional area of the glass liquid flow channel can be automatically adjusted, thereby changing the glass liquid flow rate so that it gradually approaches the preset target flow rate. In this way, it can be adjusted in real time according to the actual flow conditions to ensure the stability and accuracy of the glass liquid flow rate and meet the requirements of the glass production process.

[0101] In this embodiment, the flow rate is determined by accurately measuring the mass of the molded product and adjusted based on the deviation between the actual flow rate and the preset target flow rate. This allows the molten glass flow rate to be precisely controlled near the preset target value, reducing flow fluctuations and avoiding glass product quality issues such as uneven thickness and bubbles caused by unstable flow rates, thereby improving the quality stability of the glass products. Furthermore, in this embodiment, the control process does not require frequent human intervention. The control device automatically completes data collection, analysis, and the generation and transmission of control instructions, reducing the workload of operators, improving production efficiency, avoiding errors that may occur due to manual operation, improving the reliability and consistency of control, and enhancing the stability of glass product quality.

[0102] In one feasible embodiment, in step S30, the step of generating an adjustment instruction based on the flow deviation includes:

[0103] Step S301, inputting the flow deviation into a preset flow-height model to obtain an adjustment height and an adjustment direction;

[0104] The preset flow-height model describes the relationship between glass flow rate and rod height. This model can be a functional equation derived from analyzing and fitting a large amount of experimental data, or a predictive model trained using a machine learning algorithm. The flow-height model can be used to calculate the required rod height adjustment and the direction of adjustment based on flow deviation.

[0105] After the control device obtains the flow deviation, it inputs the flow deviation as an input parameter into the preset flow-height model. After processing by the model, the corresponding adjustment height and adjustment direction are output. For example, if the flow deviation is a positive value, that is, the actual flow is less than the preset target flow, the model may output an adjustment height of 5 mm and an adjustment direction of rising.

[0106] Step S302: Generate an adjustment instruction based on the adjustment height and the adjustment direction.

[0107] The control device determines the control parameters of the first and second servo motors based on the height and direction of adjustment. For ascending, the control device generates a forward rotation command for the motors; for descending, it generates a reverse rotation command. For height adjustment, the control device converts the height adjustment into the number of revolutions or angles required for the motors based on parameters such as the pitch of the first and second precision screws, thereby determining the motor speed and rotation time.

[0108] It can be understood that by converting the adjustment height and adjustment direction into specific motor control instructions, it can ensure that the first servo motor and the second servo motor drive the first precision screw and the second precision screw to rotate as required, thereby driving the first lead screw nut and the second lead screw nut to rise and fall, thereby achieving the accuracy of adjusting the material rod height.

[0109] In one possible embodiment, please refer to Figure 5 In step S30, after the steps of controlling the first servo motor to drive the first precision screw to move up and down based on the adjustment instruction and controlling the second servo motor to drive the second precision screw to move up and down based on the adjustment instruction, the method further includes:

[0110] Step S40: When it is detected that the height of the nut of the first precision screw reaches the upper limit structure of the first precision screw, or the height of the nut of the first precision screw reaches the lower limit structure of the first precision screw, a stop operation instruction is generated and the first servo motor and the second servo motor are controlled to stop running based on the stop operation instruction.

[0111] When the first lead nut moves on the first precision screw, once its height reaches the upper limit structure, the upper limit structure immediately sends a signal to the control device. Similarly, when the first lead nut reaches the lower limit structure, the lower limit structure also sends a signal to the control device. After receiving the signal from the limit structure, the control device generates a stop operation command and transmits this command to the first servo motor and the second servo motor via the communication line. Upon receiving the stop operation command, the first and second servo motors immediately stop operating, causing the screws of the first and second precision screws to stop rotating, and the nut to stop rising and falling.

[0112] It can be understood that by cooperating with the upper limit structure and the lower limit structure in conjunction with the control device, excessive lifting and lowering of the first screw nut can be avoided, and components such as the material rod and the material rod support platform can be prevented from colliding and being damaged by other equipment, thereby reducing the probability of equipment failure, reducing the waste of raw materials and energy consumption caused by production interruptions, and improving production efficiency.

[0113] In one feasible embodiment, the channel flow automatic control method further includes:

[0114] Step S50: Control the material rod rotating motor and the rotating reducer on the material rod supporting platform to drive the material rod to rotate at a preset speed.

[0115] The control device first obtains the corresponding preset speed information from the parameter library stored internally according to the current glass production process requirements, and then calculates the control instruction parameters that need to be sent to the material rod rotating motor and the rotating reducer based on the preset speed, the performance parameters of the material rod rotating motor and the rotating reducer (such as the rated speed of the motor, the reduction ratio of the reducer, etc.), including the target speed and direction of the motor and the control signal of the reducer.

[0116] The control device transmits the generated control commands to the rod-rotating motor and the rotating reducer. Upon receiving the control commands, the rod-rotating motor adjusts its operating state based on the target speed and direction information contained in the commands, outputting the corresponding rotational power. The rotating reducer also adjusts its operating state based on the control commands, precisely reducing the output speed of the rod-rotating motor and amplifying the torque. Through the coupling, the rod rotates stably at the preset speed under the power output of the rotating reducer.

[0117] It's understandable that controlling the rod's rotation can alter the flow characteristics of the molten glass near the discharge port, making it more evenly distributed, reducing stress concentration within the molten glass, and lowering the probability of bubble formation, thereby improving the quality of the glass product. Furthermore, flexibly adjusting the rod's preset rotation speed based on different production process requirements allows the system to adapt to the production needs of a variety of glass products, enhancing its versatility and adaptability.

[0118] The present application provides an electronic device, which includes a control device in the channel flow automatic control system as described above; or, at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the channel flow automatic control method in the above-mentioned embodiments.

[0119] The electronic device provided in this application, utilizing the automatic channel flow control method described in the aforementioned embodiment, can address the technical issue of poor stability in manually controlled glass channel flow, which impacts the quality of glass products. Compared to the prior art, the electronic device provided in this application achieves the same beneficial effects as the automatic channel flow control method described in the aforementioned embodiment. Other technical features of this electronic device are the same as those disclosed in the aforementioned embodiment and are not further elaborated here.

[0120] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0121] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0122] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer program) stored thereon, and the computer-readable program instructions are used to execute the channel flow automatic control method in the above embodiment.

[0123] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0124] The computer-readable storage medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0125] The computer-readable storage medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device implements the various embodiments of the above-mentioned channel flow automatic control method. The computer program code for performing the operations of the present application can be written in one or more programming languages or a combination thereof, and the programming language includes an object-oriented programming language - such as Java, Smalltalk, C++, and also includes a conventional procedural programming language - such as "C" language or similar programming language. The program code can be executed entirely on the user computer, partially on the user computer, as an independent software package, partially on the user computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user computer through any type of network - including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect via the Internet).

[0126] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0127] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0128] The computer-readable storage medium provided herein stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned automatic channel flow control method. This computer-readable storage medium can address the technical issue of poor stability in manually controlled glass channel flow, which impacts the quality of glass products. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided herein are similar to those of the automatic channel flow control method provided in the aforementioned embodiments, and are not further elaborated here.

[0129] The present application also provides a computer program product, comprising a computer program, which implements the steps of the above-mentioned channel flow automatic control method when executed by a processor.

[0130] The computer program product provided in this application can address the technical issue of poor stability in manually controlling glass channel flow, which affects the quality of glass products. Compared to the prior art, the beneficial effects of the computer program product provided in this application are similar to those of the automatic channel flow control method provided in the aforementioned embodiment, and are not further elaborated here.

[0131] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A channel flow automatic control system, characterized in that: include: The material bar lifting device includes a material bar support platform, a material bar arranged vertically downward on the material bar support platform, a first precision screw and a second precision screw connected to both ends of the material bar support platform respectively, a first servo motor connected to the first precision screw, and a second servo motor connected to the second precision screw; the first servo motor and the second servo motor are used to drive the material bar support platform to rise and fall; a discharge port, the discharge port being arranged below the material rod support platform and the material rod, the discharge port comprising a first discharge port and a second discharge port connected from top to bottom, the maximum discharge width of the first discharge port being greater than the maximum discharge width of the second discharge port; as the material rod support platform is raised or lowered, the lower end of the material rod is raised or lowered inside the first discharge port, and a gap between the lower end of the material rod and the second discharge port forms a glass liquid flow channel with a variable cross-sectional area; a weighing device, the weighing device being used to weigh the molded product discharged from the discharge port; A control device is communicatively connected with the weighing device, the first servo motor and the second servo motor, and is used to drive the first servo motor and the second servo motor according to the weighing value of the weighing device.

2. The channel flow automatic control system according to claim 1, characterized in that: The material bar lifting device further includes a first reducer connected to the first servo motor, and the first reducer is in communication with the control device; the control device is further configured to drive the first reducer to control the output speed of the first servo motor; The material rod lifting device also includes a second reducer connected to the second servo motor, and the second reducer is in communication with the control device; the control device is also used to drive the second reducer to control the output speed of the second servo motor.

3. The channel flow automatic control system according to claim 1, characterized in that: A material rod rotating motor and a rotating reducer connected in sequence are provided on the material rod supporting platform, the material rod rotating motor is connected to the material rod through a coupling, and the material rod rotating motor and the rotating reducer are respectively communicated with the control device; The control device is also used to control the material rod rotating motor to drive the material rod to rotate; The control device is also used to drive the rotation reducer to control the output speed of the material rod rotation motor.

4. The channel flow automatic control system according to claim 1, characterized in that: The lower end of the material rod is cylindrical; the first discharge port and the second discharge port are circular; The diameter of the cylinder is smaller than the diameter of the first discharge port, and the diameter of the cylinder is greater than or equal to the diameter of the second discharge port.

5. The channel flow automatic control system according to claim 4, characterized in that: The lower end of the material rod is made of refractory material or precious metal material; The discharge port is made of refractory material or precious metal material.

6. The channel flow automatic control system according to any one of claims 1 to 5, characterized in that: An upper limit structure and a lower limit structure are respectively provided at both ends of the first precision screw rod; The control device is further configured to control the first servo motor and the second servo motor to stop running when the material rod lifting device reaches the upper limit structure or the lower limit structure.

7. A method for automatic control of channel flow, characterized in that: The channel flow automatic control method is applied to a control device in a channel flow automatic control system according to any one of claims 1 to 6, and the channel flow automatic control method includes: Obtaining the mass of the molded product weighed by a weighing device, and determining the flow rate of the molten glass based on the mass of the molded product, wherein the mass of the molded product is the mass of the molded product discharged from the discharge port; determining a flow deviation based on the glass liquid flow rate and a preset target flow rate; An adjustment instruction is generated based on the flow deviation, and the first servo motor is controlled to drive the first precision screw to move up and down based on the adjustment instruction, and the second servo motor is controlled to drive the second precision screw to move up and down based on the adjustment instruction.

8. The automatic channel flow control method according to claim 7, characterized in that: The step of generating an adjustment instruction based on the flow deviation includes: Inputting the flow deviation into a preset flow-height model to obtain an adjustment height and an adjustment direction; An adjustment instruction is generated based on the adjustment height and the adjustment direction.

9. The automatic channel flow control method according to claim 7, characterized in that: After the steps of controlling the first servo motor to drive the first precision lead screw to move up and down based on the adjustment instruction, and controlling the second servo motor to drive the second precision lead screw to move up and down based on the adjustment instruction, the method further includes: When it is detected that the height of the nut of the first precision screw reaches the upper limit structure of the first precision screw, or the height of the nut of the first precision screw reaches the lower limit structure of the first precision screw, a stop operation instruction is generated and the first servo motor and the second servo motor are controlled to stop running based on the stop operation instruction.

10. The automatic channel flow control method according to any one of claims 7 to 9, characterized in that: The channel flow automatic control method further comprises: The material rod rotating motor and the rotating reducer on the material rod supporting platform are controlled to drive the material rod to rotate at a preset speed.

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