Emergency cutting methods, systems, devices, apparatuses, and media

Abstract

The application belongs to the technical field of glass production, and particularly relates to an emergency cutting method, system, device, equipment and medium. The method comprises the following steps: obtaining processing information of glass, the glass running on a first conveying roller way of a production line; obtaining a cutting pressure according to the processing information, the cutting pressure being positively correlated with the thickness of the glass; determining that a cutting signal is received, then running a cutting knife under the constraint of emergency cutting to form a scratch on the glass, and moving the glass with the scratch to a second conveying roller way of the production line; through the introduction of the cutting pressure parameter, the pressure during the running of the cutting knife is controlled to form a scratch with a proper depth, on the one hand, the problem of difficult recovery caused by the breaking of the glass on the production line (i.e. at a place other than the second conveying roller way) and the safety risk are avoided, on the other hand, the glass cannot be broken and crushed as expected when running to the second conveying roller way, the production line equipment is pressed by the glass, the production is interrupted, and even the equipment is damaged.

Description

Technical Field

[0001] This application belongs to the field of glass production technology, and in particular relates to emergency cutting methods, systems, devices, equipment and media. Background Technology

[0002] When producing glass through a production line, multiple processes need to be executed sequentially. For example, a float glass production line typically consists of three main thermal equipment: a melting furnace, a tin bath, and an annealing furnace. After the raw materials are processed through each process in the production line, the desired finished glass product can be obtained.

[0003] However, due to the continuous nature of the production line process, if an abnormal situation occurs in some processes of the production line (there are many possible causes for abnormal situations, such as changes in the expected glass sheet shape, equipment failure, etc.), even if other processes are processed normally, the expected finished glass product cannot be obtained. In this case, it is necessary to break the glass on the production line to protect the equipment and reduce useless processing.

[0004] Therefore, how to more safely and effectively break glass on the production line has become a technical problem that the industry urgently needs to solve. Summary of the Invention

[0005] This application provides an emergency cutting method, system, device, equipment, and medium that can quickly collect qualified products when glass plates are expanded or thickened on the production line, thereby improving production efficiency and safety.

[0006] In a first aspect, embodiments of this application provide an emergency cutting method, including:

[0007] Obtain processing information for the glass, which runs on the first conveyor roller of the production line;

[0008] The cutting pressure is obtained based on the processing information, and the cutting pressure is positively correlated with the thickness of the glass;

[0009] Once a cutting signal is received, the cutting blade is operated under emergency cutting constraints to create scratches on the glass, and the glass with the scratches is moved to the second conveyor roller of the production line.

[0010] The emergency cutting constraint includes a pressure constraint where the pressure between the cutting blade and the glass meets the cutting pressure, the second conveyor roller is offset by a specified dimension relative to the first conveyor roller along the direction of gravity, and the glass running on the second conveyor roller breaks along the scratch.

[0011] The above method, by introducing cutting pressure parameters, controls the pressure of the cutting blade during operation to form scratches of appropriate depth. On the one hand, it avoids the glass breaking on the production line (i.e., not at the second conveyor roller), which would cause difficulties in recycling and pose safety risks. On the other hand, it avoids the glass failing to break and shatter as expected when it reaches the second conveyor roller, which would cause the production line equipment to be squeezed by the glass and cause damage.

[0012] Meanwhile, by setting a second conveyor roller that is offset from the first conveyor roller, the reliability of glass breakage / shattering at the second conveyor roller can be further enhanced.

[0013] In one possible implementation of the first aspect, prior to the step of determining that a cutting signal has been received, the method further includes:

[0014] Based on the glass dimensions and running speed in the processing information, obtain the cutting path and / or cutting speed of the cutting blade;

[0015] The emergency cutting constraint also includes a motion constraint that the movement of the cutting blade satisfies the cutting path and / or the cutting speed. The motion constraint is used to form the scratch in a specified direction, which is a direction perpendicular to the forward direction of the glass.

[0016] The above method sets the cutting path and / or cutting speed by the size of the glass and the running speed, so that the relative movement path between the cutting blade and the glass (which constitutes the shape of the scratch) can be in a specified direction perpendicular to the glass's forward direction, and further enable the scratch to more effectively break and shatter the glass when it runs to the second conveyor roller.

[0017] In one possible implementation of the first aspect, the step of determining that a cutting signal has been received, then operating the cutting blade under emergency cutting constraints to create a scratch on the glass, and moving the scratched glass to the second conveyor roller of the production line includes:

[0018] Acquire production abnormality signals, which include at least one of equipment fault signals, process modification signals, and process mismatch signals;

[0019] If it is determined that the mechanical limit signal of the cutting blade has been activated, the cutting blade is operated under emergency cutting constraints to form scratches on the glass, and the scratched glass is moved to the second conveyor roller of the production line.

[0020] The above method takes into account the risk of damage to the cutting blade, and introduces a mechanical limit signal check in the cutting signal confirmation step to ensure that the cutting blade is restricted to a relatively safe range of motion.

[0021] In one possible implementation of the first aspect, the step of operating the cutting blade under emergency cutting constraints to create scratches on the glass and moving the scratched glass to the second conveyor roller conveyor of the production line includes:

[0022] The current state of the first conveyor roller is obtained through sensors;

[0023] If the current state is determined to be empty, or if the current state is determined to be carrying broken glass, then the cutting blade is raised until the current state changes to carrying normal glass.

[0024] The above method takes into account the current state of the first conveyor roller within the range of motion of the cutting blade, so as to avoid damage to the cutting blade caused by glass in a broken state, and damage caused by the cutting blade falling onto the roller without glass.

[0025] In one possible implementation of the first aspect, after determining that the current state is empty, or determining that the current state is carrying broken glass, and then raising the cutting blade until the current state changes to carrying normal glass, the method further includes:

[0026] Once the current state is determined to be carrying normal glass, after a specified delay, the cutting blade is run under emergency cutting constraints.

[0027] The above method continues to monitor the current state of the first conveyor roller after the cutting blade is lifted, and applies an appropriate delay to continue the cutting work after the current state is normal. This ensures the integrity of the scratch to the greatest extent while protecting the cutting blade, providing a good foundation for the subsequent breakage of the glass.

[0028] In one possible implementation of the first aspect, the cutting path includes a cutting start point and a cutting end point; both the cutting start point and the cutting end point are located on the glass, and both satisfy the condition that the distance relative to the edge of the glass in the specified direction is a preset safety range.

[0029] The above method further improves the reliability of emergency cutting by conservatively setting the starting and ending points of the cutting blade path and using a preset safety range as the tolerance space for the glass plate swing (i.e. the movement of the glass in the specified direction).

[0030] In one possible implementation of the first aspect, the cutting path further includes a pressure point and a decompression point, and the blade drop start point, the pressure point, the decompression point, and the blade drop end point are sequentially arranged along the cutting path; the cutting pressure includes a first pressure and a second pressure, and the first pressure is less than the second pressure;

[0031] On the cutting path from the starting point of the blade drop to the pressurization point and on the cutting path from the depressurization point to the ending point of the blade drop, the cutting blade operates at the first pressure;

[0032] Along the cutting path between the pressurization point and the depressurization point, the cutting blade operates at the second pressure.

[0033] The above method, by setting additional pressure and pressure points, makes the pressure on the cutting blade relatively smaller when it is falling and lifting, which helps to increase the speed when the blade is falling and lifting. This also helps to avoid the blade dragging and scratching the glass, causing unexpected scratches and causing trouble for subsequent breaking work.

[0034] Secondly, embodiments of this application provide an emergency cutting system, including:

[0035] An acquisition module is used to acquire processing information of the glass, which runs on the first conveyor roller of the production line;

[0036] A pressure module is used to obtain the cutting pressure based on the processing information, wherein the cutting pressure is positively correlated with the thickness of the glass;

[0037] A cutting module is used to determine that a cutting signal has been received, and then, under emergency cutting constraints, to run the cutting blade to form a scratch on the glass and move the scratched glass to the second conveyor roller of the production line;

[0038] The emergency cutting constraint includes a pressure constraint where the pressure between the cutting blade and the glass meets the cutting pressure, the second conveyor roller is offset by a specified dimension relative to the first conveyor roller along the direction of gravity, and the glass running on the second conveyor roller breaks along the scratch.

[0039] Thirdly, embodiments of this application provide a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the emergency cutting method described in any one of the first aspects above.

[0040] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the emergency cutting method described in any one of the first aspects above.

[0041] Fifthly, embodiments of this application provide a computer program product that, when run on a terminal device, causes the terminal device to execute the emergency cutting method described in any one of the first aspects.

[0042] Sixthly, embodiments of this application provide an emergency cutting device, comprising:

[0043] A processor that communicates with the servo driver;

[0044] The processor is used to control the servo driver to perform the following according to the cutting signal: drive the cutting blade under emergency cutting constraints to cut the glass running on the first conveyor roller to form scratches;

[0045] The cutting signal is generated in response to the opening signal of the second conveyor roller, which is offset by a specified dimension relative to the first conveyor roller along the direction of gravity. The emergency cutting constraint includes a pressure constraint that the pressure between the cutting blade and the glass meets the cutting pressure, the cutting pressure being positively correlated with the thickness of the glass, and the scratch satisfying the condition that the glass running to the second conveyor roller breaks along the scratch.

[0046] In one possible implementation of the sixth aspect, the channel between the processor and the servo driver includes:

[0047] A first channel for transmitting forward and reverse signals to the servo driver; and,

[0048] The second channel is used to read the servo drive speed signal.

[0049] In one possible implementation of the sixth aspect, the channel between the processor and the servo driver further includes:

[0050] The third channel is used to read the self-test signals of the servo drive, which include mechanical limit access signals, emergency stop signals, and servo drive ready signals.

[0051] If the self-test signal is successfully read, the processor controls the servo driver to execute the following based on the cutting signal: drive the cutting blade under emergency cutting constraints to cut the glass running on the first conveyor roller to form scratches.

[0052] In one possible implementation of the sixth aspect, the device further includes an encoder, which is communicatively connected to the servo driver via a fourth channel for controlling the servo driver according to the forward and reverse signals, so that the cutting blade runs at a specified speed.

[0053] In one possible implementation of the sixth aspect, the apparatus further includes an isolation transformer for converting external power into a specified electrical signal for connection to the servo driver and / or the processor.

[0054] It is understood that the beneficial effects of the second to sixth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 This is a flowchart illustrating the emergency cutting method provided in the embodiments of this application;

[0057] Figure 2 This is a first schematic diagram of the roller conveyor structure provided in an embodiment of this application;

[0058] Figure 3 This is a second schematic diagram of the roller conveyor structure provided in the embodiments of this application;

[0059] Figure 4 This is a third schematic diagram of the roller conveyor structure provided in the embodiments of this application;

[0060] Figure 5 This is a schematic diagram of the emergency cutting system provided in the embodiments of this application;

[0061] Figure 6 This is a schematic diagram of the structure of the terminal device provided in the embodiments of this application;

[0062] Figure 7 This is a schematic diagram of the circuit structure of the emergency cutting device provided in the embodiments of this application;

[0063] Figure 8 This is a schematic diagram of the CN1A cable structure of the emergency cutting device provided in the embodiments of this application;

[0064] Figure 9 This is a schematic diagram of the CN1B cable structure of the emergency cutting device provided in this application embodiment;

[0065] Figure 10 This is a schematic diagram of the CN2 cable structure of the emergency cutting device provided in the embodiments of this application;

[0066] Figure 11 This is a schematic diagram of the photoelectric encoder structure of the emergency cutting device provided in the embodiments of this application;

[0067] Figure 12 This is a schematic diagram of the CN3 cable structure of the emergency cutting device provided in the embodiments of this application;

[0068] Figure 13 This is a schematic diagram of the power wiring structure of the emergency cutting device provided in the embodiments of this application;

[0069] Figure 14 This is a schematic diagram of the main power supply circuit of the emergency cutting device provided in the embodiments of this application;

[0070] Figure 15 This is a schematic diagram of the control principle of the emergency cutting device provided in the embodiments of this application;

[0071] Figure 16 This is a schematic diagram illustrating the plate-breaking detection principle of the emergency cutting device provided in this application embodiment;

[0072] Figure 17 This is a schematic diagram of the proportional electromagnet control principle of the emergency cutting device provided in the embodiments of this application;

[0073] Figure 18 This is a schematic diagram of the PLC input terminal allocation and wiring of the emergency cutting device provided in the embodiments of this application;

[0074] Figure 19 This is a first schematic diagram of the control program for the emergency cutting device provided in the embodiments of this application;

[0075] Figure 20 This is a second schematic diagram of the control program for the emergency cutting device provided in the embodiments of this application;

[0076] Figure 21 This is a third schematic diagram of the control program for the emergency cutting device provided in the embodiments of this application;

[0077] Figure 22 This is a fourth schematic diagram of the control program for the emergency cutting device provided in this application embodiment;

[0078] Figure 23 This is the fifth schematic diagram of the control program of the emergency cutting device provided in the embodiments of this application;

[0079] Figure 24 This is a sixth schematic diagram of the control program for the emergency cutting device provided in this application embodiment;

[0080] Figure 25 This is the seventh schematic diagram of the control program of the emergency cutting device provided in the embodiments of this application;

[0081] Figure 26 This is the eighth schematic diagram of the control program of the emergency cutting device provided in the embodiments of this application.

[0082] Figure label:

[0083] Pre-processing roller conveyor 210;

[0084] Post-processing roller conveyor 220;

[0085] Rotating roller conveyor 221;

[0086] Translation roller conveyor 222;

[0087] Get module 501;

[0088] Pressure module 502;

[0089] Cutting module 503;

[0090] Terminal equipment 60;

[0091] Processor 601;

[0092] Memory 602;

[0093] Computer program 603. Detailed Implementation

[0094] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0095] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0096] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0097] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0098] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0099] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0100] The introduction of emergency cutting function can enhance the protection of some equipment on the glass production line and reduce unnecessary processing. Its specific setting location can be set according to the specific process flow on the production line. For example, for a float glass production line (the main thermal equipment is melting furnace, tin bath and annealing furnace), an emergency cutting machine can be set between the annealing furnace and the cold end equipment, and emergency cutting can be achieved through the cutting blade of the emergency cutting machine.

[0101] In this example, the emergency cutting machine serves to cut glass that does not meet national thickness standards or has many defects during initial trial production and normal production when adjusting thickness. After being cut to predetermined dimensions, the glass is fed via a sloping roller conveyor into a hammer mill for crushing and then falls into an emergency drop hopper, where it is conveyed by a conveyor belt to a glass crushing yard over 100 meters high. Alternatively, it can be directly transported via a deflector belt to a kiln head hopper at 400-500 meters for weighing, where the crushed glass is added according to the raw material batching formula for secondary melting, thus also acting as a flux. More importantly, the emergency cutting machine protects cold-end equipment from damage and reduces the workload of employees.

[0102] Float glass production is a continuous production process within a kiln cycle. Each line must be equipped with corresponding auxiliary equipment. Although the emergency cutting machine mentioned above is not used frequently, it plays a significant role in production. The safe operation of the equipment on the production line is of utmost importance.

[0103] Reducing the cost of float glass production lines is a top priority for glass companies. Improving the yield and production rate of float glass are the most effective ways to reduce production costs, and the introduction of emergency cutting machines is conducive to achieving this goal.

[0104] For glass production lines based on other methods, the emergency cutting machine can achieve a similar effect. Although some embodiments of this application will be described using a float glass production line as an example, this does not mean that the solution of this application is only applicable to float glass production lines.

[0105] This application provides an emergency cutting method, such as... Figure 1 As shown, it includes:

[0106] Step 102: Obtain glass processing information, wherein the glass is running on the first conveyor roller of the production line;

[0107] Step 104: Obtain the cutting pressure based on the processing information, wherein the cutting pressure is positively correlated with the thickness of the glass;

[0108] Step 106: If a cutting signal is received, the cutting blade is operated under emergency cutting constraints to form a scratch on the glass, and the glass with the scratch is moved to the second conveyor roller of the production line.

[0109] The emergency cutting constraint includes a pressure constraint where the pressure between the cutting blade and the glass meets the cutting pressure, the second conveyor roller is offset by a specified dimension relative to the first conveyor roller along the direction of gravity, and the glass running on the second conveyor roller breaks along the scratch.

[0110] In this embodiment, step 106 is the actual execution step of emergency cutting, while steps 102 and 104 can be understood as necessary prerequisite steps for step 106. That is, in some optional implementations, the execution timing of steps 102 and 104 can be much earlier than the execution timing of step 106 (for example, steps 102 and 104 can be executed after determining that a certain type of glass is to be produced, but before the production line has started running).

[0111] The glass processing information mentioned in step 102 may include the specific type of glass (such as formulation), width dimension (dimension perpendicular to the direction of production line movement), thickness dimension, and production line operating speed (especially the production line operating speed near the emergency cutting machine).

[0112] Furthermore, the term "glass" in the various embodiments of this application can be understood as glass processed to various stages on the production line, including glass raw materials, semi-finished products, finished glass products, etc., and cannot be simply understood as finished glass products with expected dimensions and strength.

[0113] In some alternative implementations, the glass processing information may also include parameter information for the emergency cutting tool.

[0114] The cutting pressure obtained in step 104 can be understood as being able to cut a scratch on the glass, but the glass with the scratch will not break and will remain running on the production line until it reaches the second conveyor roller.

[0115] The cutting pressure is positively correlated with the glass thickness, and in some cases it is also related to the glass formulation. Its specific value can be obtained by calculation using theoretical formulas, determination through experiments, or setting empirical parameters.

[0116] As an example and not a limitation, the second conveyor roller conveyor and the first conveyor roller conveyor can share an angle-adjustable roller conveyor (denoted as the adjustable roller conveyor). When the adjustable roller conveyor is at a first angle, it is connected to other processing roller conveyors on the production line (denoted as processing roller conveyors). Glass passing through the adjustable roller conveyor can be smoothly transported to the processing roller conveyor. At this time, the processing roller conveyor (denoted as the front processing roller conveyor 210) and the adjustable roller conveyor together constitute the first conveyor roller conveyor (at this time, the adjustable roller conveyor at the same angle as the front processing roller conveyor 210 can be denoted as the rear processing roller conveyor 220). The specific state of the roller conveyor at this time can be... Figure 2 The provided example structure.

[0117] Correspondingly, when the adjustable roller conveyor rotates along the direction of gravity to the second angle (e.g.) Figure 3 As shown, the adjustable roller conveyor at the second angle can be referred to as the rotating roller conveyor 221. The pre-processing roller conveyor 210 is still connected to the front end of the rotating roller conveyor 221. The broken glass can be transported to the rotating roller conveyor 221 and continue along the second angle to the bottom of the post-processing roller conveyor. That is, the adjustable roller conveyor at the second angle constitutes the second conveying roller conveyor.

[0118] When the glass is transported from the pre-processing roller conveyor 210 to the rotating roller conveyor 221 before it breaks, due to the angle difference (i.e., the difference between the first angle and the second angle), a portion of the glass will be suspended in the air. As more and more glass is suspended in the air, the weight of this portion of glass will become non-negligible, thus inducing the glass to break. Due to the cutting action of the cutting blade, the structural weakness of the glass is concentrated on the scratch. It can be expected that the glass will break at the scratch and fall into the rotating roller conveyor 221, and be transported to the bottom of the post-processing roller conveyor.

[0119] In this setup, a crusher (such as a hammer mill) and a conveyor belt can be installed below the post-processing roller conveyor to transport the broken glass to a designated location.

[0120] In addition, a falling mechanism can be added to apply external force to cause the glass to break along the scratch, thereby providing a certain fault tolerance. In this case, the limitation on glass breakage in this embodiment, that is, the glass running to the second conveyor roller breaks along the scratch, can be understood as the glass breaking along the scratch under the combined action of gravity and the external force applied by the falling mechanism.

[0121] Since the portion of the glass detached from the pre-processing roller conveyor 210 is suspended in the air, the gravity of this portion of the glass will inevitably contribute to the glass breakage; that is, gravity is at least one of the inducing factors for glass breakage.

[0122] Although glass can break under gravity (or in combination with a falling mechanism) even without scratches, the specific location of the break will be determined by the structural strength distribution of the glass itself, which cannot be well controlled. In addition, although the suspended part of the glass does need to be broken (removed from production), the part that is still on the pre-processing roller conveyor 210 may continue to be processed. If the fracture morphology is not controlled by scratches, it may lead to additional material loss.

[0123] Furthermore, under normal circumstances, due to the presence of pressure constraints, the depth of the scratch should be just enough to ensure that the glass can advance completely without breaking on the pre-processing roller 210, and just enough to ensure that after the glass is suspended at the rotating roller 221 by a specified proportion, it can break along the scratch by relying solely on its own weight. However, in actual production, there may be errors in the acquisition of glass processing information, and there may also be errors in the specific cutting pressure of the cutting blade. Under the influence of these mentioned and unmentioned errors, there is a possibility that it is impossible to achieve breakage by relying solely on its own weight. The introduction of the falling mechanism helps to improve the robustness of emergency cutting and intervenes in similar situations to assist in completing the glass breakage.

[0124] In some cases, the falling mechanism can be manually applied by production line workers as needed, or it can be automatically executed in response to an external force application signal under the action of the execution subject (e.g., control processor) in this embodiment. As an example and not a limitation, the external force application signal can be that the suspended length of the glass at the rotating roller 221 is greater than a preset value.

[0125] like Figure 4 As shown, the above-described embodiment based on the rotating roller conveyor 221 can be replaced by an embodiment based on the translation roller conveyor 222. In the embodiment based on the translation roller conveyor 222, the arrangement of the front processing roller conveyor 210 and the rear processing roller conveyor 220 is the same as that based on the rotating roller conveyor 221. The difference is that the movement mode of the rear processing roller conveyor 220 is changed from rotation to translation in the direction of gravity, thereby forming the translation roller conveyor 222.

[0126] In some alternative implementations, the movement of the post-processing roller conveyor 220 can also combine rotation and translation.

[0127] The beneficial effects of this embodiment are as follows:

[0128] The above method, by introducing cutting pressure parameters, controls the pressure of the cutting blade during operation to form scratches of appropriate depth. On the one hand, it avoids the glass breaking on the production line (i.e., not at the second conveyor roller), which would cause difficulties in recycling and pose safety risks. On the other hand, it avoids the glass failing to break and shatter as expected when it reaches the second conveyor roller, which would cause the production line equipment to be squeezed by the glass, resulting in production interruption or even equipment damage.

[0129] Meanwhile, by setting a second conveyor roller that is offset from the first conveyor roller, the reliability of glass breakage / shattering at the second conveyor roller can be further enhanced.

[0130] According to the above embodiments, in yet another embodiment:

[0131] Before the step of determining that a cutting signal has been received, the method further includes:

[0132] Based on the glass dimensions and running speed in the processing information, obtain the cutting path and / or cutting speed of the cutting blade;

[0133] The emergency cutting constraint also includes a motion constraint that the movement of the cutting blade satisfies the cutting path and / or the cutting speed. The motion constraint is used to form the scratch in a specified direction, which is a direction perpendicular to the forward direction of the glass.

[0134] Specifically, in one alternative implementation, an emergency cutting blade is movably mounted on a cross-cutting bridge, which is positioned at a fixed angle relative to the production line's forward direction.

[0135] Compared to a scratch on glass, the front section (i.e., the glass on the side of the glass moving in the direction of travel from the scratch) is expected to break, while the rear section (i.e., the glass on the side of the glass opposite to the direction of travel along the scratch) may be glass that needs to break, or it may be glass that does not need to break (in this case, the scratch corresponds to the last cut in this breakage). In this case, it is necessary to ensure that the rear section of glass still has the regular expected shape, which requires the scratch to be a preset shape along the specified direction, such as a regular straight line.

[0136] To ensure that the scratches formed by the cutting blade are regular straight lines in the specified direction, the cutting speed can be determined as follows (in this embodiment, due to the fixed angle setting of the cross-cutting bridge, the cutting path is a function of the cutting speed and the glass advance speed).

[0137] Let the angle between the transverse bridge and the direction of glass travel be... The speed at which the glass advances is V1, the cutting speed is V2, and the cutting time is t;

[0138] Then we have:

[0139]

[0140] Furthermore, we can obtain:

[0141]

[0142] Specifically, assuming the main drive speed (V1) of the annealing furnace is 600 m / h, the longitudinal dimension of the produced glass plate is H = 3660 mm (fixed), the transverse dimension is 4880 mm (fixed), and the angle between the cross-cutting bridge and the production line is... It is 30°.

[0143] The cutting speed then satisfies:

[0144]

[0145] As can be seen, the movement speed V2 of the intelligent emergency cutting blade mainly follows the change in main drive speed V1. The faster the main drive speed, the faster the cutting blade speed, ensuring that the cut glass plate is a cuboid shape rather than a rhombus. This facilitates the use of the height difference of the emergency drop ramp, achieving the following sequentially:

[0146] It breaks naturally under its own weight and enters the hammer mill;

[0147] The particles are crushed and fall onto the conveyor belt.

[0148] It is transported to the glass crushing yard or the kiln head silo.

[0149] The beneficial effects of this embodiment are as follows:

[0150] The above method sets the cutting path and / or cutting speed by the size of the glass and the running speed, so that the relative movement path between the cutting blade and the glass (which constitutes the shape of the scratch) can be in a specified direction perpendicular to the glass's forward direction, and further enable the scratch to more effectively break and shatter the glass when it runs to the second conveyor roller.

[0151] According to any of the above embodiments, in yet another embodiment:

[0152] The step of determining that a cutting signal has been received, then operating the cutting blade under emergency cutting constraints to create a scratch on the glass, and moving the scratched glass to the second conveyor roller of the production line includes:

[0153] Acquire production abnormality signals, which include at least one of equipment failure signals, process modification signals, and process mismatch signals;

[0154] If it is determined that the mechanical limit signal of the cutting blade has been activated, the cutting blade is operated under emergency cutting constraints to form scratches on the glass, and the scratched glass is moved to the second conveyor roller of the production line.

[0155] The beneficial effects of this embodiment are as follows:

[0156] The above method takes into account the risk of damage to the cutting blade, and introduces a mechanical limit signal check in the cutting signal confirmation step to ensure that the cutting blade is restricted to a relatively safe range of motion.

[0157] According to any of the above embodiments, in yet another embodiment:

[0158] The step of operating the cutting blade under emergency cutting constraints to create scratches on the glass, and moving the scratched glass to the second conveyor roller of the production line includes:

[0159] The current state of the first conveyor roller is obtained through sensors;

[0160] If the current state is determined to be empty, or if the current state is determined to be carrying broken glass, then the cutting blade is raised until the current state changes to carrying normal glass.

[0161] After determining that the current state is empty, or determining that the current state is carrying broken glass, and then raising the cutting blade until the current state changes to carrying normal glass, the method further includes:

[0162] Once the current state is determined to be carrying normal glass, after a specified delay, the cutting blade is run under emergency cutting constraints.

[0163] Among them, broken glass can be understood as glass plates with defects, such as cracks and gaps. These defects are unavoidable for glass production lines (under a certain glass production volume) and may be caused by temperature changes in various parts of the production line, external forces, etc.

[0164] In one alternative implementation, the sensor is a photoelectric switch.

[0165] As an example rather than a limitation, six photoelectric switches can be evenly installed on a preset crossbeam to detect glass with a shattered plate. The purpose is that when a shattered plate is detected, the cutting blade operates in a jump-cut mode, where jump-cut can be understood as the cutting blade lifting up at least a portion of its forward path, including the portion where the shattered glass is located.

[0166] The direction from the preset crossbeam to the cutting blade is consistent with the direction of glass movement. That is, the glass first reaches the crossbeam equipped with the photoelectric switch, and then reaches the area where the cutting blade is located. The distance between the preset crossbeam and the area where the cutting blade is located (denoted as the photoelectric safety distance) satisfies the following:

[0167] Within the time required to receive the photoelectric switch signal and control the cutting blade according to the glass breaking signal, the distance the glass advances is less than the photoelectric safety distance.

[0168] Preferably, these six photoelectric switches can cover the entire area of ​​the glass running on the production line in a specified direction (perpendicular to the direction of the glass's movement) to ensure that any breakage of the glass at any point can be detected.

[0169] The cutting blade is easily damaged when it acts on shattered glass (especially glass with notches) under pressure; in severe cases, the entire blade holder can be broken. To better protect the cutting blade, it will immediately lift up if any photoelectric switch detects a shattered glass. After returning to normal operation, it will lower after a 15-millisecond delay and continue working.

[0170] The beneficial effects of this embodiment are as follows:

[0171] The above method takes into account the current state of the first conveyor roller within the movement range of the cutting blade, so as to avoid damage to the cutting blade caused by the glass in the broken state, and damage caused by the cutting blade falling onto the roller without glass (it can be understood that the roller without glass corresponds to various situations such as the production line being empty, the glass breaking leaving a gap so that the roller at the gap is not carrying glass).

[0172] The above method continues to monitor the current state of the first conveyor roller after the cutting blade is lifted, and applies an appropriate delay to continue the cutting work after the current state is normal. This ensures the integrity of the scratch to the greatest extent while protecting the cutting blade, providing a good foundation for the subsequent breakage of the glass.

[0173] According to any of the above embodiments, in yet another embodiment:

[0174] The cutting path includes a cutting start point and a cutting end point; both the cutting start point and the cutting end point are located on the glass, and both satisfy the following condition: the distance relative to the edge of the glass in the specified direction is a preset safe range.

[0175] The cutting path also includes pressure points and decompression points, and the blade drop start point, the pressure point, the decompression point, and the blade drop end point are sequentially arranged along the cutting path; the cutting pressure includes a first pressure and a second pressure, and the first pressure is less than the second pressure;

[0176] On the cutting path from the starting point of the blade drop to the pressurization point and on the cutting path from the depressurization point to the ending point of the blade drop, the cutting blade operates at the first pressure;

[0177] Along the cutting path between the pressurization point and the depressurization point, the cutting blade operates at the second pressure.

[0178] The beneficial effects of this embodiment are as follows:

[0179] The above method further improves the reliability of emergency cutting by conservatively setting the starting and ending points of the cutting blade path and using a preset safety range as the tolerance space for the glass plate swing (i.e. the movement of the glass in the specified direction).

[0180] The above method, by setting additional pressure and pressure points, makes the pressure on the cutting blade relatively smaller when it is falling and lifting, which helps to increase the speed when the blade is falling and lifting. This also helps to avoid the blade dragging and scratching the glass, causing unexpected scratches and causing trouble for subsequent breaking work.

[0181] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0182] Corresponding to the emergency cutting method described in the above embodiments, Figure 5 The diagram shows a structural block diagram of an emergency cutting system provided in an embodiment of this application. For ease of explanation, only the parts related to the embodiment of this application are shown.

[0183] Reference Figure 5 The system includes:

[0184] The acquisition module 501 is used to acquire processing information of the glass, which runs on the first conveyor roller of the production line;

[0185] Pressure module 502 is used to obtain cutting pressure based on the processing information, wherein the cutting pressure is positively correlated with the thickness of the glass;

[0186] The cutting module 503 is used to determine that a cutting signal has been received, and then, under emergency cutting constraints, to run the cutting blade to form a scratch on the glass and move the glass with the scratch to the second conveyor roller of the production line;

[0187] The emergency cutting constraint includes a pressure constraint where the pressure between the cutting blade and the glass meets the cutting pressure, the second conveyor roller is offset by a specified dimension relative to the first conveyor roller along the direction of gravity, and the glass running on the second conveyor roller breaks along the scratch.

[0188] Furthermore, the system also includes:

[0189] The cutting path module is used to obtain the cutting path and / or cutting speed of the cutting blade based on the glass size and running speed in the processing information;

[0190] The emergency cutting constraint also includes a motion constraint that the movement of the cutting blade satisfies the cutting path and / or the cutting speed. The motion constraint is used to form the scratch in a specified direction, which is a direction perpendicular to the forward direction of the glass.

[0191] Cutting module 503 includes:

[0192] A production anomaly unit is used to acquire production anomaly signals, which include at least one of equipment fault signals, process modification signals, and process mismatch signals.

[0193] The cutting execution unit is configured to, if it is determined that the mechanical limit signal of the cutting blade has been connected, operate the cutting blade under emergency cutting constraints to form scratches on the glass, and move the scratched glass to the second conveyor roller of the production line.

[0194] The detection unit is used to obtain the current state of the first conveyor roller conveyor through sensors;

[0195] An unloaded unit is used to determine whether the current state is unloaded or whether the current state is carrying broken glass, and then raise the cutting blade until the current state changes to carrying normal glass.

[0196] The recovery unit is used to determine that the current state has changed to carrying normal glass, and after a specified delay, to run the cutting blade under emergency cutting constraints.

[0197] Furthermore, the cutting path includes a cutting start point and a cutting end point; both the cutting start point and the cutting end point are located on the glass, and both satisfy the condition that the distance relative to the edge of the glass in the specified direction is a preset safe range.

[0198] The cutting path also includes pressure points and decompression points, and the blade drop start point, the pressure point, the decompression point, and the blade drop end point are sequentially arranged along the cutting path; the cutting pressure includes a first pressure and a second pressure, and the first pressure is less than the second pressure;

[0199] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0200] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0201] This application also provides a terminal device, such as... Figure 6 As shown, the terminal device 60 includes: at least one processor 601, a memory 602, and a computer program 603 stored in the memory and executable on the at least one processor. When the processor executes the computer program, it implements the steps in any of the above-described method embodiments.

[0202] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the various method embodiments above.

[0203] This application provides a computer program product that, when run on a mobile terminal, enables the mobile terminal to implement the steps described in the above-described method embodiments.

[0204] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0205] Based on the above-described method / system embodiments, an optional hardware architecture implementation method will be provided below to achieve the emergency cutting function.

[0206] This application provides an emergency cutting device, including:

[0207] A processor that communicates with the servo driver;

[0208] The processor is used to control the servo driver to perform the following according to the cutting signal: drive the cutting blade under emergency cutting constraints to cut the glass running on the first conveyor roller to form scratches;

[0209] The cutting signal is generated in response to the opening signal of the second conveyor roller, which is offset by a specified dimension relative to the first conveyor roller along the direction of gravity. The emergency cutting constraint includes a pressure constraint that the pressure between the cutting blade and the glass meets the cutting pressure, the cutting pressure being positively correlated with the thickness of the glass, and the scratch satisfying the condition that the glass running to the second conveyor roller breaks along the scratch.

[0210] In this embodiment, the processor can be hardware with data processing capabilities, such as a PLC board, MCU, or CPU.

[0211] For details regarding the specific structures of the first and second conveyor rollers, please refer to the relevant descriptions in the above method embodiments, which will not be repeated here.

[0212] Furthermore, in an alternative implementation:

[0213] The channel between the processor and the servo driver includes:

[0214] A first channel for transmitting forward and reverse signals to the servo driver; and,

[0215] The second channel is used to read the servo drive speed signal.

[0216] The channel between the processor and the servo driver also includes:

[0217] The third channel is used to read the self-test signals of the servo drive, which include mechanical limit access signals, emergency stop signals, and servo drive ready signals.

[0218] After the processor reads the self-test pass signal, it drives the servo driver to execute a preset cutting action. The self-test pass signal can be equivalent to:

[0219] Mechanical limit switch is connected (i.e., mechanical limit switch connection signal is normal);

[0220] The production line is not stopped (i.e., the emergency stop signal provides a signal that the production line is operating normally, not in an emergency. It is worth noting that in an optional implementation, the communication line where the emergency stop signal is located is a normally closed contact. That is, the communication line is normally closed when the production line is operating normally, and at this time it provides a signal that the production line is operating normally, not in an emergency. When the production line experiences an emergency stop, such as equipment failure or planned maintenance, the normally closed contact is opened, thereby providing a signal that it is in an emergency stop state. At this time, the processor will not drive the servo driver).

[0221] The servo drive connection is normal (i.e., the servo drive ready signal is normal).

[0222] If the self-test signal is successfully read, the processor controls the servo driver to execute the following based on the cutting signal: drive the cutting blade under emergency cutting constraints to cut the glass running on the first conveyor roller to form scratches.

[0223] The device may also include an encoder, which is connected to the servo driver via a fourth channel for controlling the servo driver according to the forward and reverse signals, so that the cutting blade runs at a specified speed.

[0224] The device may also include an isolation transformer for converting external power into a specified electrical signal for connection to the servo driver and / or the processor.

[0225] The following will describe this implementation method in detail using a PLC as the processor.

[0226] It is worth noting that the channels mentioned in the various embodiments of this application can be understood as the PLC's ports and their connecting cables in the implementation of the PLC.

[0227] Figure 7 An exemplary circuit diagram of an emergency cutting device based on an MR-J2S-200A servo driver and a Mitsubishi PLC 64MT is shown. It can be understood that the solutions of the various embodiments of this application can also be executed by any other type of PLC (or MCU or other processors) and servo driver. The specific wiring ports may be different depending on the type of hardware selected.

[0228] For ease of implementation, Figure 7 Based on the existing circuit structure, an additional control box can be installed. Its layout includes a manual / automatic selection knob (SA) on the panel, two buttons (SB1 for run and SB2 for stop), each with its own indicator light (one red for run, one green for stop); and two manual forward / reverse buttons (SB3, SB4) for easy zeroing. The touchscreen is used to set the length of the cutting system, the blade entry and exit points, the pressure start and end points, and the blade pressure is set differently depending on the thickness of the glass strip. After ensuring the glass plate breaks naturally under its own weight, it enters the hammer mill.

[0229] The internal components of the control box include: one 3P 32A switch, one 2P 10A switch, and one 1P 10A switch; two 24V DC power supplies and one 18V DC power supply; a Mitsubishi PLC 64MT, one expansion module FX2N HC, one FX2N 232IF, and one FX2N-2AD; 16 54P intermediate relays, one knife pressure conditioning module; and one servo driver MR-J2S-200A.

[0230] The input / output terminals of the MR-J2S-200A servo drive are connected to external communication; its four ports are CN1A, CN1B, CN2, and CN3.

[0231] Among them, such as Figure 8 As shown, the CN1A communication line (first channel) receives forward and reverse pulses. Y0 outputs a forward pulse to line 3 of the servo unit CN1A, which is a PP pulse to drive the servo motor to rotate forward. Y1 outputs a reverse pulse to line 2 of the servo unit CN1A, which is a NP pulse to drive the servo motor to rotate in reverse. Line 10 of the servo unit CN1A is connected to COM2 of the Mitsubishi PLC, and line 20 of the servo unit CN1A is connected to COM1 of the Mitsubishi PLC.

[0232] like Figure 9As shown, the communication signal sent by CN1B (third channel) is connected to the X30 terminal of the PLC via terminal 19 (ZSP), representing the zero-speed signal of the servo and its position at the origin. Line 5 (SON) of CN1B represents normal servo operation, and line 15 (EMG) represents emergency stop of the servo. Line 16 (LSP) represents the forward mechanical limit (forward secondary limit 1SQ), and line 17 (LSN) represents the reverse mechanical limit (reverse secondary limit 2SQ). These are connected in series to the 24V power supply through the normally closed contacts of mechanical limit 1SG and 2SG, respectively, to pin 13 of relays 3KA and 4KA. Pin 14 of relays 3KA and 4KA is directly connected to the 24V line. Once the control power is supplied, the MR-J2S-200A servo will self-check whether the SG signal on line 10 of CN1B has been delivered. If it has, the servo is normal. Simultaneously, it is also necessary to check whether the normally open contacts of 3KA and 4KA, connected in series to the forward limit position (line 16 LSP) and the reverse limit position (line 17 LSN), receive the SG signal from line 10 of CN1B. Otherwise, an alarm code XXXX will appear. Connect the SG of CN1B directly to pins 5 and 15 of CN1B. That is, connect pin 1 of relays 3KA and 4KA directly to SG, short-circuit them, and connect them in parallel to the negative terminal of the 24V power supply and the COM terminal of the PLC. Connect the normally open contacts of 3KA and 4KA to pins 16 / 17 of the servo driver MR-J2S-200A through pin 9 of the 3KA and 4KA normally open contacts.

[0233] Among them, the forward / reverse mechanical limit (secondary limit) can be understood as a physical limit. In addition, there is a forward / reverse primary limit, which can be understood as a software-controlled limit. This setting can, on the one hand, realize the protection function of the cutting blade in operation through software-controlled limit (avoiding cutting into non-glass positions), and on the other hand, realize the installation, debugging, and maintenance of the cutting blade through mechanical limit slightly larger than the software-controlled limit.

[0234] like Figure 10 As shown, CN2 (fourth channel) is the dedicated encoder line for the servo motor. The connection instructions for the servo driver MR-J2S-200A cable are as follows: Short-circuit pins 18, 19, and 20 of CN2 P5 and connect them to the encoder's S terminal; short-circuit pins 11 and 12 of LG and connect them to the encoder's R terminal; connect pin 7 of MR to the encoder's C terminal; connect pin 17 of MRR to the encoder's D terminal; connect pin 9 of BAT to the encoder's F terminal; connect pin 1 of LG to the encoder's G terminal. Pins 9 and 1 provide internal power to the encoder from the servo driver. SG is the shielding mesh between the encoder and servo drive to prevent interference.

[0235] It is worth noting that, unlike the encoder of a servo motor, this device can also be equipped with another photoelectric encoder, such as... Figure 11As shown, it is used to obtain the forward speed of the glass by the speed of the glass conveyor rollers, and then calculate the running speed and / or running path of the cutting blade.

[0236] The CN3 (third channel) of the servo driver MR-J2S-200A is the communication module FX2N-232IF between the servo driver and the Mitsubishi PLC.

[0237] like Figure 12 As shown, CN3 is the servo driver communication cable, which serves as a bridge for communication between the servo and the PLC. The CN3 receive signal line 2 (RXD) is connected to the FX2N-232IF serial port transmit signal line 3 (TXD); the CN3 transmit signal line 12 (TXD) is connected to the FX2N-232IF serial port receive signal line 2; and the CN3 ground line 1 (GND) is connected to the FX2N-232IF serial port ground line 5 (GND).

[0238] like Figure 13 As shown, a three-phase 380V AC power supply is input to the primary side of the 1QF isolation transformer via terminals 2 (yellow / red), 5 (green), and 8 (red). The secondary side outputs three sets of three-phase 210V AC power, which are connected to terminals 31 (yellow), 32 (green), and 33 (red) of the first set. Terminals 31, 32, and 33 correspond to L3, L2, and L1 of the MR-J2S-200A, respectively, supplying the servo with the three-phase 210V AC power. To ensure power supply to the servo's internal DC system, L1 and L2 are connected across terminals L11 and L12 of the servo. The servo's U, V, and W terminals are connected to terminals A, B, and C of the servo motor. A PE grounding wire is introduced after the servo's grounding terminal and the servo motor's D terminal to prevent electric shock or static electricity injury.

[0239] refer to Figure 14 The principle of the main power supply circuit of the intelligent emergency cutting machine is explained as follows;

[0240] The power supply from the three-phase power switch 1QF in the factory area is introduced into the upper yellow, green, and red wires of QF2 in this control cabinet, and the lower yellow, green, and red wires of 2QF are connected to terminals 2, 5, and 8 on the primary side of the isolation transformer, respectively. The secondary side outputs three sets of three-phase AC 210V, which are connected to terminals 31, 32, and 33 of the first set, respectively. Terminals 31, 32, and 33 correspond to L3, L2, and L1 inputs of the MR-J2S-200A, respectively, to supply power to the servo motor. To ensure power supply to the servo's internal DC system, L1 and L2 are connected across terminals L11 and L12 of the servo motor. The servo motor's U, V, and W terminals are connected to terminals A, B, and C of the motor. A PE grounding wire is introduced after the servo motor's grounding terminal and the motor's D terminal to prevent electric shock or static electricity injury. The 2P 10A 3QF connector connects to two 24V DC power supplies at the bottom; these supply power to the PLC module, mechanical switches, proximity switches, photoelectric switches, and solenoid valves, respectively; the 1P 6A QF4 connector is dedicated to providing 18V DC power to the FX2N-2DA blade pressure module and the blade pressure regulating module.

[0241] refer to Figure 15 The control principle of the intelligent emergency cutting machine is explained as follows:

[0242] Turning the SA selector switch 45° counterclockwise transmits the 24V negative DC power supply to the PLC's X26 channel via the SA manual normally open contact. Turning it 45° clockwise transmits the 24V negative DC power supply to the PLC's X25 channel via the SA automatic normally open contact. Now, assume the selector switch SA is in the manual position. SB3 is the forward rotation button. When the forward rotation button SB3 is pressed, a positive pulse is generated, and the cutting blade will move towards the far end. Releasing the SB3 button will stop the cutting blade. If the SB3 button is held down, the cutting blade will continue to move towards the far end proximity switch JK1 (the first-level protection during normal use) and stop. Pressing the button again will stop the cutting blade from moving forward. When the reverse rotation button SB4 is pressed, the cutting blade will move in the opposite direction and move back towards the near end. If SB4 is held down, the cutting blade will continue to move back towards the near end until it touches the zero-point proximity switch JK0 and stops immediately. If the SB4 button is pressed again, the cutting blade will continue to move towards the near end at a low speed until it approaches the near end (first-level limit proximity switch) JK2 and then will stop moving towards the near end. If you manually move the blade forward and backward once more, you'll observe that when you briefly press SB3 to move it to the remote end, the red indicator light 3HL will illuminate briefly. If you hold down SB3, the red indicator light 3HL will remain on. If you continue moving towards the remote end to the proximity switch JK1, pressing SB3 again will not move the blade, and the red indicator light 3HL will not illuminate. Now, if you manually reverse the blade to the near end, briefly pressing SB4 will move the blade towards the near end, and the red indicator light 3HL will illuminate briefly. If you hold down SB4, the blade will continue moving towards the near end, and the red indicator light 3HL will remain on until you release SB4, at which point the red indicator light 3HL will turn off. During this process, as long as forward and reverse movement is not in operation, the green light will remain on, indicating a normal home standby state.

[0243] Now, assuming the selector switch SA is in the automatic position, rotating SA 45° clockwise transmits the 24V negative DC power supply to the PLC's X25 channel via the SA automatic normally open contact. The main circuit power switches 2QF, 3QF, and 4QF are all closed. The PLC checks that all signals are output normally; the green 4HL light illuminates, the servo display panel shows zero, and the three-color AL light on the top of the control panel is green, indicating that the entire system is functioning normally. Simultaneously, check if the relevant parameter settings on the touchscreen match the existing production glass plate width. After adjusting the parameters to match, manually press the run button SB1. The cutting blade immediately moves to the far end absolute position, operating according to the parameters set in the table below. If there is a deviation from the actual production plate width, appropriate modifications can be made.

[0244] Assuming the current glass production specification is an effective glass sheet width of 4880mm, the actual produced raw sheet (gross width) width is approximately 5.2 meters; the lateral cutting length of the cutting blade is set to 5000mm. The cutting blade travels 340mm from the origin proximity switch JK0. PLC-Y22 issues a command to start the blade drop. The 1KA energized blade-dropping solenoid valve drives the blade drop, and the 1KA normally open contact closes, driving the oil injection valve to open and inject oil, ensuring the cutting blade cuts the glass effectively. To ensure normal and reliable cutting without damaging the cutting blade and to prevent PLC-Y22 channel failure, PLC-Y26 is used in parallel. The output drives the blade cutting and oil injection valve; cutting begins approximately 60mm inward from the edge of the glass plate. After the blade drops, force is applied starting at the 100mm mark to ensure a clean, flush break. The purpose of the pressure application is to use different blade pressures for different glass thicknesses. For glass thinner than 5mm, the emergency drop device will allow the glass plate to break under its own weight. However, 6-8mm glass plates are difficult to break, and 10-15mm plates are unlikely to break due to insufficient external force. Thick plates that cannot break under their own weight may jam the crusher, which is fatal to production. The system operates under pressure until the decompression point at 4650mm, then runs another 100mm to the blade lifting point at 4750mm. The blade is immediately lifted to stop operation. After a 1-second delay, the system returns to the starting point at a preset high speed of 3000rpm, awaiting the next cutting action. If the cutting does not achieve the desired result, slightly adjust the preset values.

[0245] To ensure proper glass cutting, the system is equipped with dedicated aviation kerosene for easy glass cutting. The kerosene is automatically added from the kerosene drum to the cutting oil tank, with a PLC-X24 serving as the oil level input. The cutting action is controlled by cylinders and solenoid valves. The cylinder's proper functioning depends on the compressed air that drives it; low pressure results in a slow cut, while high pressure may crush thin glass. A suitable pressure value is determined through practical operation and used as the alarm setpoint.

[0246] refer to Figure 16 The control principle of the intelligent emergency cutting machine also includes:

[0247] Six photoelectric switches are evenly distributed on the crossbeam of the cross-cutting machine to detect glass with shattered plates. The purpose is to prevent damage to the cutting blade during cross-cutting operation when shattered glass is detected, as the pressure could easily break the cutting blade, and in severe cases, the entire blade holder could be damaged. To better protect the cutting blade, the cutting blade will immediately lift if any one of the photoelectric switches detects a shattered plate. After returning to normal operation, it will lower after a 15-millisecond delay and continue working. Six photoelectric switches are connected in a four-wire NPN configuration for positive output; red is connected to 24V+, and blue is connected to 24V-. When the photoelectric switch is within a range of 10-300mm from the glass plate and the glass plate passes through continuously and normally, the internal conduction of the photoelectric switch is activated, outputting a 24V+ positive terminal from the black wire, and the green light on the photoelectric switch illuminates, connecting to pin 14 of the 54P relay. Pin 13 is connected to the 24V- terminal. When relays 50KA-55KA activate, they are connected to the negative terminal of the 24V- power supply via the auxiliary normally open contact pin 1, and then connected to pin 9, which is then introduced into channels X32-X37 of the PLC. If one or all photoelectric switches fail to detect the glass plate, either the glass plate will explode or there will be no glass strip, then one or all of relays 50KA-55KA will not engage, and all the red lights on the photoelectric switch body will illuminate. The use of photoelectric switches effectively protects the cutting tool.

[0248] refer to Figure 17 The following will explain the control principle of the cutting pressure, namely the proportional electromagnet control principle:

[0249] The software sends a 0-100% digital signal to the (COM1) and (VOUT1) pins of a single analog voltage output channel of the FX2N-2DA module. These (COM1) and (VOUT1) pins are then connected to pins 1 and 4 of the signal conditioning module, respectively. Pins 2 and 7 of the conditioning module are connected to the negative terminal of an 18V power supply, and pin 3 is connected to the positive terminal of an 18V power supply. The voltage generated at pins 2 and 6 is amplified by a Zener transistor, and then applied to the coil of a proportional electromagnet. This voltage drives the cutting wheel to cut the surface of the glass. The use of easily cut aviation kerosene ensures a smooth and even fracture.

[0250] refer to Figure 18 PLC Input Terminal Assignment and Wiring Instructions: The FX2N Mitsubishi PLC requires two voltage levels for power supply. One is 220V, which corresponds to the L and N terminals of the PLC input terminals. The other is a 24V DC power supply connected to the two positive terminals. The 24V negative terminal is connected to all the COM terminals of the PLC.

[0251]

[0252] The software implementation for emergency cutting will be explained below.

[0253] 1. Mistake-proof design:

[0254] In daily work and operation, different people, at different times, and under different emergency situations inevitably make mistakes when operating the touchscreen. To ensure reliable use and protect the equipment from damage, the program design incorporates an error prevention protection function: The tool drop point data register D241 in the program segment is set to any number (mm) less than 100, with the minimum value being 100 (mm). Other numbers will not be recorded or displayed. This primarily prevents the tool from being easily damaged by dropping onto the conveyor roller support or outside the edge of the glass plate. The optimal drop point should be on the glass... The glass plate edge is 60mm inward (slight plate sway is not affected); because the conveyor support is higher than the glass plate; if the input to the drop data register D241 is any number (mm) greater than 4750, then the drop position data register D241 can only be 4750 (mm); that is, the servo motor drives the belt to rotate and drag the cutting tool holder 4750 (mm) before the blade drops; our maximum cutting stroke is exactly at this position, and the cutting tool will not knock over the opposite conveyor roller support when it drops, and will stop after a 15-millisecond delay before returning to the origin direction. If the input to the lift position data register D242 is any number (mm) less than 100, then the value recorded and displayed by the lift position data register D242 can only be 100 (mm); then in our actual operation, the blade may lift immediately after dropping; and if the input to the lift position data register D242 is any value (mm) greater than 5500, the data register D242 can only be 5500 (mm). The blade is protected by software. We previously described how the hardware-protected cutting tool uses a primary protection proximity switch (approximately 5000 mm), ensuring the effective cutting length is within the protection range of this switch. The secondary protection mechanical switch is at least 5500 mm. Our production line's conveyor rollers, including the support frame, have an outer width of 6200 mm and an effective inner width of 5600 mm. The maximum rough plate width during normal production is 5200 mm, and the maximum customer order size is 4880 mm. Of course, different kiln tonnages have different plate widths, requiring various optimization methods. For other tonnages and plate widths, using this intelligent cutting equipment only requires adjustments to the cutting length, blade placement and lifting points, and pressure and depressurization points before normal operation.

[0255] 2. Experiment and Readiness Selection:

[0256] refer to Figure 19The program segments 65-82 shown illustrate how, to prevent unexpected equipment safety accidents during new production or commissioning, we set up experiment and ready-to-go selections on the program and touchscreen. When the tool is running on the touchscreen with the experiment function enabled (normally open software M505), the cutting blade and proportional electromagnet will not operate during reciprocating motion, regardless of whether it's offline or online debugging. If ready-to-go is selected, the cutting blade and proportional electromagnet will operate during reciprocating motion. On the touchscreen, M505 lights up blue, PLS M505 receives a positive pulse, the normally open soft contact M50 lights up blue, SET Y026 lowers the tool and lifts it (see program segment 77), and simultaneously the oil injection valve resets and closes. On the touchscreen, M505 is not lit and is white and disconnected. When the falling edge of M505 PLF occurs, M505 receives a negative pulse, the normally open soft contact M51 lights up blue, RST Y026 lowers the tool, and simultaneously the oil injection valve actuates and injects oil.

[0257] 3. Reliability of the pressure application position after the tool is dropped:

[0258] The pressure of the electromagnet varies depending on the thickness of the glass and the temperature of the glass plate. The appropriate value is set manually using the up and down arrow keys on the touchscreen. The program starts from zero and runs to 340mm, approximately 60mm inward from the edge of the glass plate. The cutting length is set according to the width of the plate. For example, if the lifting point is at 4750mm, the pressure point is set at 500mm, approximately 160mm inward from the edge of the glass plate, to ensure cutting quality. If the lifting point is at 4750mm, the pressure release point is set at 4650mm. This ensures the glass cutter lifts quickly (preventing dragging and scratching the next piece of glass). An inappropriate setting will apply pressure after the cutting blade has already lifted, affecting the lifting speed.

[0259] refer to Figure 20 This part of the program ensures the absolute position of the tool's drop or lift and the absolute position of the tool's movement, allowing for the selection of whether the tool drops or not. In program segment 111, D10 represents the actual absolute position moved by the servo, D506 is the drop position (D241), and D508 is the lift position (D242). Program segment 132 detects broken or fractured glass plates to prevent damage to the tool. If a broken or fractured plate occurs during cutting, the tool immediately lifts (Y26), and normally drops after a 0.1-second delay. This is commonly referred to as skip-cutting or tool-jumping.

[0260] 4. Pressure error prevention function:

[0261] An error-prevention function is implemented to prevent damage to the cutting tool due to improper data settings. This means that different cutting pressures are used for glass of different thicknesses.

[0262] 5. How is the speed achieved using software?

[0263] refer to Figure 21 The encoder value of the main drive speed measurement is read through the X5 channel of the FX2N and converted into linear velocity. Then, the cutting speed coefficient K116, magnified 100 times, is calculated by substituting the known parameters into the trigonometric function formula and stored in register D443. The number in register D443 is then divided by 100 and stored in register D440 to obtain the speed value of the emergency cutting blade. The automatic tracking annealing speed is then activated, and the value of D440 is placed at position K2000 in the 5361 program segment.

[0264] 6. Description of manual / automatic forward rotation programs:

[0265] refer to Figure 22 X26 is the manual signal input, and X25 is the automatic signal input. When the SA knob is manually activated, X26 is "1", thus the automatic circuit is disconnected. When SA is in the automatic position, X25 is "1", thus the manual circuit is disconnected. This achieves interlocking. Pressing the manual button SB3 disables manual operation on the PLC's X15 channel. This is achieved through the normally closed X22 of the SB2 zero-position button, connected in series with the first and second-level emergency cutting protection proximity and mechanical switch M89, then connected in series with the normally closed M833 (which opens once after one cycle of M8029), and the normally closed manual contact X26. Then, the rising edge start pulse switch X23 is connected in series to momentarily activate M811, and the auxiliary normally open contact of M811 achieves self-locking forward rotation. Simultaneously, forward rotation illuminates the running light Y21. The PLC's X15 channel is activated by the manual jog button SB3; pressing the forward rotation SB3 button once causes the Y21 light to flash briefly. If knob SA is turned to the automatic position and PLC channel X25 is "1", then when all the necessary conditions of the automatic circuit input signal 5361 program segment are met, pressing the SB1 start button will cause the PLC input channel X23 to receive a rising edge pulse signal, the M811 coil will be turned on, and the auxiliary contact of M811 will realize self-holding servo drive to drive the cutting tool to move to the far end at a speed of 2000 pulses. D800 represents the motion stroke, and Y000 represents the continuous output of the forward rotation signal [PLSY K2000D800 Y000].

[0266] refer to Figure 23 When the actual distance is greater than or equal to 800 li in register D443, M822 is turned on, time relay T81 delays for 1 second, and M8222 starts the reverse circuit.

[0267] 7. Description of the manual / automatic reversal program:

[0268] refer to Figure 24X26 is the manual signal input, and X25 is the automatic signal input. When the SA knob is manually activated, X26 is "1", and the automatic circuit is disconnected. When SA is in the automatic position, X25 is "1", and the manual circuit is disconnected. This achieves interlocking. At this time, the tool has already moved to the far end. In the manual position, X26 is "1" and X5 is "0". Pressing the manual button SB4 activates the PLC channel X16 input. This is achieved by connecting the normally closed zero-position X22 in series with the first and second level protection proximity and mechanical switch M89 for emergency cutting, and then connecting the normally closed X25 and X16 button inputs in series, which will reverse the movement towards the near end. X16 is the manual jog input; pressing the SB4 button once will cause the reverse button light to flash once. If the manual circuit is disconnected when the knob SA is turned to the automatic position and PLC channel X25 is "1", then when all the necessary conditions of the input signals X22X M89X M833X X26X M8222 in program segment 5394 are met, the positive stroke Y000 reaches the set stroke and stops after a 1-second delay. Then, the negative edge pulse signal of the PLC output channel Y001 is started by M8222 in program segment 5394, [PLSY K3000 D800 Y001]. The servo drive returns to the origin at a speed of 3000 pulses to the near end. D800 represents the origin of the motion stroke, and Y001 represents the continuous output of the reverse signal.

[0269] refer to Figure 25 In program segment 5411, once the origin is reached, M822 is immediately reset, and the output of Y21 is disconnected. Returning to the zero position, the speed is zero. X30 is normally open and closed, and the stop light Y20 illuminates. In program segment 5420, M8029 represents the end of a loop, flashing briefly to turn on SET M833. In program segment 5423, the positive row value register D8140 is set to zero. When M833 is turned on, T87 delays for 0.5 seconds to reset M833. In program segment 5439, upon receiving the rising edge pulse signal from M833 and at zero speed at the origin, SET M844 delays for 10 seconds and restarts the cutting blade to move towards the far end. T84 turns on SET M811, simultaneously resetting RST M844 to achieve fixed-cycle automatic cutting. If the main drive speed and the set width of the glass plate are used, the calculation conversion time can be achieved to realize free-width cutting. See programs 139 and 5455, which realize automatic cutting of glass plates according to different widths.

[0270] The formula calculates the vertical width of the D820 register as 3600mm and the horizontal width as 4800mm; the main drive speed is 600m / H (given) for a 5mm thick glass plate. T = 3.66M / 10M / min = 21.96 seconds.

[0271] In program segment 5431, the program must return to the origin X14 after each cut. If it does not return to the origin, it will not continue cutting to ensure the accuracy of the cut.

[0272] refer to Figure 26 X17 in program segment 5360 demonstrates the intelligent function of this equipment, showcasing its automation capabilities and reducing labor costs. Under normal production conditions, the SA knob on the control panel is in the automatic position, and the three-color indicator light on the top of the control panel shows a green light, indicating that the equipment is functioning normally. When a production abnormality occurs, and the drop plate has fallen and touched the limit switch 3SQ mechanical switch, the intelligent emergency cutter immediately begins cutting according to the predetermined dimensions. When production returns to normal and the emergency drop plate device rises, the emergency cutting stops after a delay of one cutting cycle, preparing to start again when the next X17 rising edge pulse arrives. When changing production specifications or when the current glass surface quality is poor, the SB1 button needs to be manually activated or the operator needs to lower the drop plate device. The intelligent emergency cutter then initiates emergency cutting.

[0273] In addition, the following points should be noted when using a server:

[0274] 1. To prevent electric shock, the protective earth (PE) terminal of the servo amplifier must be connected to the protective terminal of the control cabinet.

[0275] 2. The diode must be connected in the correct direction; otherwise, the emergency stop and other protection circuits may not function.

[0276] 3. CIN1A, CIN1B, CIN2, and CIN3 are of the same shape. If these joints are connected incorrectly, it may cause malfunctions.

[0277] 4. An emergency stop switch or button must be installed.

[0278] 5. The total current in the external relay coil must not exceed 80 mA. If it does, an external power supply must be used for I / O.

[0279] 6. Emergency stop signal EMG in case of abnormal operation. The forward / reverse travel end (LSP, LSN) must be connected to the SG terminal. Normally closed contact.

[0280] 7. When the fault terminal (ALM) is not faulty (operating normally), it is connected to the SG. When it is OFF (a fault has occurred), please stop the server output through the program.

[0281] 8. Signals with the same name are connected internally in the server.

[0282] 9. The input of the command pulse train adopts the open collector method, and the differential drive method is for distances below 10 meters.

[0283] 10. When using the server's internal power supply, VDD and COM must be connected. When using an external power supply, VDD should not be connected to COM.

[0284] 11. The server's three-phase power supply is three-phase 210V, and it cannot be directly connected to three-phase 380V.

[0285] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0286] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0287] In the embodiments provided in this application, it should be understood that the disclosed apparatus / network devices and methods can be implemented in other ways. For example, the apparatus / network device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0288] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0289] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An emergency cutting method, characterized in that, include: The processing information of the glass is obtained. The glass runs on the first conveyor roller of the production line. The processing information of the glass includes the specific type of glass, width dimension, thickness dimension, production line running speed, and parameter information of the emergency cutting knife. The cutting pressure is obtained based on the processing information, and the cutting pressure is positively correlated with the thickness of the glass; Once a cutting signal is received, the cutting blade is operated under emergency cutting constraints to create scratches on the glass, and the glass with the scratches is moved to the second conveyor roller of the production line. The emergency cutting constraint includes a pressure constraint where the pressure between the cutting blade and the glass meets the cutting pressure; the second conveyor roller is offset by a specified dimension relative to the first conveyor roller along the direction of gravity; the glass running on the second conveyor roller breaks along the scratch; before the step of determining that a cutting signal has been received, the method further includes: Based on the glass dimensions and production line operating speed in the processing information, obtain the cutting path and / or cutting speed of the cutting blade; The emergency cutting constraint also includes a motion constraint that the movement of the cutting blade satisfies the cutting path and / or the cutting speed. The motion constraint is used to form the scratch in a specified direction, which is a direction perpendicular to the forward direction of the glass. The step of operating the cutting blade under emergency cutting constraints to create scratches on the glass, and moving the scratched glass to the second conveyor roller of the production line includes: The current state of the first conveyor roller is obtained through sensors; If the current state is determined to be carrying shattered glass, the cutting blade is raised until the current state changes to carrying normal glass. After a specified delay, the cutting blade is operated under emergency cutting constraints. The sensor is a photoelectric switch. The direction from the preset beam to the cutting blade is consistent with the direction of glass movement. The glass first reaches the beam where the photoelectric switch is installed, and then reaches the area where the cutting blade is located. The distance between the preset beam and the area where the cutting blade is located is recorded as the photoelectric safety distance. This distance satisfies the following condition: within the time required to receive the photoelectric switch signal and control the cutting blade according to the shattered glass signal, the distance the glass moves is less than the photoelectric safety distance.

2. The emergency cutting method as described in claim 1, characterized in that, The step of determining that a cutting signal has been received, then operating a cutting blade under emergency cutting constraints to create a scratch on the glass, and moving the scratched glass to the second conveyor roller of the production line includes: Acquire production abnormality signals, which include at least one of equipment failure signals, process modification signals, and process mismatch signals; If it is determined that the mechanical limit signal of the cutting blade has been activated, the cutting blade is operated under emergency cutting constraints to form scratches on the glass, and the scratched glass is moved to the second conveyor roller of the production line.

3. The emergency cutting method as described in claim 1, characterized in that, The cutting path includes a cutting start point and a cutting end point; both the cutting start point and the cutting end point are located on the glass, and both satisfy the following condition: the distance relative to the edge of the glass in the specified direction is a preset safe range.

4. The emergency cutting method as described in claim 3, characterized in that, The cutting path also includes pressure points and decompression points, and the blade drop start point, the pressure point, the decompression point, and the blade drop end point are sequentially arranged along the cutting path; the cutting pressure includes a first pressure and a second pressure, and the first pressure is less than the second pressure; On the cutting path from the starting point of the blade drop to the pressurization point and on the cutting path from the depressurization point to the ending point of the blade drop, the cutting blade operates at the first pressure; Along the cutting path between the pressurization point and the depressurization point, the cutting blade operates at the second pressure.

5. An emergency cutting system, characterized in that, include: The acquisition module is used to acquire the processing information of the glass, which runs on the first conveyor roller of the production line. The processing information of the glass includes the specific type of glass, width dimension, thickness dimension, production line running speed, and parameter information of the emergency cutting knife. A pressure module is used to obtain the cutting pressure based on the processing information, wherein the cutting pressure is positively correlated with the thickness of the glass; A cutting module is used to determine that a cutting signal has been received, and then, under emergency cutting constraints, to run the cutting blade to form a scratch on the glass and move the scratched glass to the second conveyor roller of the production line; The emergency cutting constraint includes a pressure constraint where the pressure between the cutting blade and the glass meets the cutting pressure, the second conveyor roller is offset by a specified dimension relative to the first conveyor roller along the direction of gravity, and the glass running to the second conveyor roller breaks along the scratch. Before the step of determining that a cutting signal has been received, the method further includes: Based on the glass dimensions and production line operating speed in the processing information, obtain the cutting path and / or cutting speed of the cutting blade; The emergency cutting constraint also includes a motion constraint that the movement of the cutting blade satisfies the cutting path and / or the cutting speed. The motion constraint is used to form the scratch in a specified direction, which is a direction perpendicular to the forward direction of the glass. The step of operating the cutting blade under emergency cutting constraints to create scratches on the glass, and moving the scratched glass to the second conveyor roller of the production line includes: The current state of the first conveyor roller is obtained through sensors; If the current state is determined to be carrying broken glass, the cutting blade is raised until the current state changes to carrying normal glass. After a specified delay, the cutting blade is run under emergency cutting constraints. The sensor is a photoelectric switch. The direction from the preset beam to the cutting blade is consistent with the direction of glass movement. The glass first reaches the beam on which the photoelectric switch is installed, and then reaches the area where the cutting blade is located. The distance between the preset beam and the area where the cutting blade is located is recorded as the photoelectric safety distance. This distance satisfies the following condition: within the time required to receive the photoelectric switch signal and control the cutting blade according to the glass breakage signal, the distance the glass moves forward is less than the photoelectric safety distance.

6. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method as described in any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 4.

8. An emergency cutting device, characterized in that, Performing the emergency cutting method as described in any one of claims 1-4, comprising: A processor that communicates with the servo driver; The processor is used to control the servo driver to perform the following according to the cutting signal: drive the cutting blade under emergency cutting constraints to cut the glass running on the first conveyor roller to form scratches; The cutting signal is generated in response to the opening signal of the second conveyor roller, which is offset by a specified dimension relative to the first conveyor roller along the direction of gravity. The emergency cutting constraint includes a pressure constraint that the pressure between the cutting blade and the glass meets the cutting pressure, the cutting pressure being positively correlated with the thickness of the glass, and the scratch satisfying the condition that the glass running to the second conveyor roller breaks along the scratch.

9. The emergency cutting device as described in claim 8, characterized in that, The channel between the processor and the servo driver includes: A first channel for transmitting forward and reverse signals to the servo driver; and, The second channel is used to read the rotational speed signal of the servo drive.

10. The emergency cutting device as described in claim 9, characterized in that, The channel between the processor and the servo driver also includes: The third channel is used to read the self-test signals of the servo drive, which include mechanical limit access signals, emergency stop signals, and servo drive ready signals. If the self-test signal is successfully read, the processor controls the servo driver to execute the following based on the cutting signal: drive the cutting blade under emergency cutting constraints to cut the glass running on the first conveyor roller to form scratches.

11. The emergency cutting device as described in claim 9, characterized in that, It also includes an encoder, which is connected to the servo driver via a fourth channel, which is used to control the servo driver according to the forward and reverse signals, so that the cutting blade runs at a specified speed.

12. The emergency cutting device as described in any one of claims 8 to 11, characterized in that, It also includes an isolation transformer, which is used to convert external power into a specified electrical signal for connection to the servo driver and / or the processor.

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