Tobacco cutter, tobacco cutter knife door gap detection device and tobacco cutter knife door gap detection method

Abstract

The invention relates to a tobacco cutter and a tobacco cutter knife gate gap detection device and method. A voltage measurement assembly is conductively connected with a double-arm bridge and used for obtaining a resistance change signal from the double-arm bridge; and the data analysis module is used for converting the voltage change signal into a cutter door gap numerical value of the tobacco cutter and presenting the cutter door gap numerical value. Therefore, tiny changes of the cutter door gap can be continuously monitored in real time, physical deformation is converted into voltage change signals to be output, continuous monitoring of the cutter door gap is achieved, the change trend of shredding quality is accurately judged through real-time data analysis, it is ensured that the cutter door gap is kept in the optimal state all the time, and the cutter door gap can be accurately monitored. The automation and intelligence level of cigarette production can be greatly improved; and potential faults caused by too large or too small gaps can be found in time by monitoring the cutter door gaps. Therefore, faults can be reduced, the operation stability and safety of the tobacco cutter can be improved, and meanwhile the machining precision and the product quality of the tobacco cutter are improved.

Description

Technical Field

[0001] The present application relates to the field of tobacco equipment, in particular to a shredder, a shredder blade door gap detection device and method, which may also be referred to as a shredder, a shredder blade door gap detection device based on strain gauge detection, and a shredder blade door gap detection method based on strain gauge detection. Background Art

[0002] In the delicate process chain of cigarette production, the tobacco cutting process directly shapes the final quality of cigarettes. As the star equipment in the tobacco cutting production line, the performance and precision of the tobacco cutter are directly related to the fineness, uniformity and overall production efficiency of the tobacco.

[0003] The blade clearance of a wire cutter is a subtle yet crucial parameter that directly impacts the quality and efficiency of the cutting process. While the traditional testing method, sticker testing, can assess the clearance status to a certain extent, it relies heavily on operator experience and requires frequent machine downtime for testing. This not only slows down production but also reduces overall efficiency. Furthermore, it is difficult to capture the ever-changing dynamics of the cutting process, making it difficult to ensure consistent product quality. Summary of the Invention

[0004] Based on this, it is necessary to provide a wire cutting machine, a wire cutting machine blade door gap detection device and method.

[0005] One embodiment of the present application is a wire cutting machine blade door gap detection device based on strain gauge detection, which includes a double-arm bridge, a voltage measurement component and a data analysis module;

[0006] The double-arm electric bridge is used to be electrically connected to a resistance strain gauge provided at the lower knife door of the wire cutting machine to obtain a resistance change signal of the resistance strain gauge;

[0007] The voltage measurement component is conductively connected to the double-arm bridge, and the voltage measurement component is also conductively connected to the data analysis module;

[0008] The voltage measurement component is used to obtain the resistance change signal from the double-arm bridge, convert it into a voltage change signal, and transmit it to the data analysis module;

[0009] The data analysis module is used to convert the voltage change signal into a knife door gap value of the wire cutter and present the knife door gap value.

[0010] The strain gauge-based blade-gate gap detection device for a wire cutter, through the coordination of a double-arm bridge, a voltage measurement component, and a data analysis module, can continuously monitor minute changes in the blade-gate gap in real time, converting physical deformation into a voltage change signal output. This enables continuous monitoring of the blade-gate gap, and through real-time data analysis, accurately determines the changing trend of wire cut quality, ensuring that the blade-gate gap is always maintained at an optimal state, significantly improving the automation and intelligence level of cigarette production. Furthermore, by monitoring the blade-gate gap, potential faults caused by excessive or insufficient gaps, such as "sheet slippage" and "stem dropout," can be promptly detected. This facilitates preventive measures, reduces the occurrence of faults, and improves the operational stability and safety of the wire cutter, while also enhancing the processing accuracy and product quality of the wire cutter.

[0011] In some of the embodiments, the wire cutting machine knife door gap detection device based on strain gauge detection further includes a display panel;

[0012] The voltage measurement component is also conductively connected to the display panel through the data analysis module;

[0013] The data analysis module presents the knife door gap value through the display panel.

[0014] In some of these embodiments, the wire cutting machine blade door gap detection device based on strain gauge detection further includes an amplifier;

[0015] The voltage measurement component is conductively connected to the double-arm bridge via the amplifier.

[0016] In some of the embodiments, the wire cutting machine knife door gap detection device based on strain gauge detection further includes an audible and visual alarm mechanism;

[0017] The data analysis module is also conductively connected to the sound and light alarm mechanism, and is used to issue an alarm through the sound and light alarm mechanism when the value of the knife door gap exceeds a preset range.

[0018] In some embodiments, the wire cutting machine knife door gap detection device based on strain gauge detection also includes the resistance strain gauge.

[0019] In some embodiments, the number of the resistance strain gauges is at least two, and the resistance strain gauges are sequentially connected in series.

[0020] In some embodiments, the number of the resistance strain gauges is three, which are respectively arranged on the left, middle and right parts of the lower knife door, and the three resistance strain gauges are connected in series.

[0021] Exemplarily, the wire cutting machine knife door gap detection device based on strain gauge detection also includes an adjustment module, which is conductively connected to the data analysis module, and the adjustment module is also used to connect to the lower knife door drive to adjust the position of the lower knife door or cutting control parameters according to the knife door gap value, so that the knife door gap of the lower knife door returns to the preset range.

[0022] In some embodiments, a wire cutting machine includes a lower knife door and a wire cutting machine knife door gap detection device based on strain gauge detection as described in any embodiment;

[0023] The lower knife door serves as the cutting position of the knife roller of the shredder;

[0024] The double-arm bridge of the wire cutting machine knife door gap detection device based on strain gauge detection is conductively connected to the resistance strain gauge arranged at the lower knife door.

[0025] In some embodiments, the lower knife door is provided with a wiring groove and a strain gauge groove, and the wiring groove is connected to the strain gauge groove;

[0026] The wire cutting machine also includes a lower copper chain driving shaft, a knife door seat, a cover plate and a copper chain;

[0027] The lower knife door is arranged on the knife door seat, and the cover plate is arranged on the lower knife door;

[0028] The lower copper chain driving shaft is drivingly connected to the copper chain and is used to drive the copper chain to transport materials to the lower knife door for cutting.

[0029] In some embodiments, a method for detecting the gap between blades of a wire cutting machine and a blade door of a wire cutting machine based on strain gauge detection includes the following steps:

[0030] The shredder cuts at the lower knife door;

[0031] Obtain the resistance change signal of the resistance strain gauge through a double-arm bridge;

[0032] The voltage measurement component obtains the resistance change signal from the double-arm bridge, converts it into a voltage change signal, and transmits it to the data analysis module;

[0033] The data analysis module converts the voltage change signal into a knife door gap value of the wire cutter and presents the knife door gap value. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a structural schematic diagram of an embodiment of a wire cutting machine knife door gap detection device based on strain gauge detection described in this application.

[0036] Figure 2 This is a structural diagram of an embodiment of the shredder described in this application.

[0037] Figure 3 for Figure 2 Schematic diagram of the stress state of the lower knife door of the embodiment shown.

[0038] Figure numerals: 1. Lower knife door; 2. Resistance strain gauge; 3. Wiring groove; 4. Strain gauge groove; 5. Lower copper bar chain driving shaft; 6. Knife door seat; 7. Cover plate; 8. Copper bar chain; 9. Double-arm bridge; 10. Amplifier; 11. Voltage measurement component; 12. Data analysis module; 13. Display panel; 14. Sound and light alarm mechanism; 15. Knife roller; 16. Blade; 17. Upper knife door seat; 18. Upper copper bar chain; 19. Tobacco material; 20. Lower copper bar chain; 21. Lower knife door seat; 23. Wire cutter knife door gap detection device based on strain gauge detection; 24. Wire cutter. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0040] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0042] In this application, unless otherwise expressly specified or limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly in contact through an intermediate medium. Furthermore, a first feature being “above,” “above,” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below,” “below,” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0044] The present application discloses a wire cutter, a device and method for detecting the gap between the blade door of the wire cutter, which include some or all of the technical features of the following embodiments; for example, the wire cutter includes some or all of the following structures. In one embodiment of the present application, a device for detecting the gap between the blade door of the wire cutter based on strain gauge detection includes a double-arm bridge, a voltage measurement component and a data analysis module; the double-arm bridge is used to be conductively connected to the resistance strain gauge provided at the lower blade door of the wire cutter to obtain the resistance change signal of the resistance strain gauge; the voltage measurement component is conductively connected to the double-arm bridge, and the voltage measurement component is also conductively connected to the data analysis module; the voltage measurement component is used to obtain the resistance change signal from the double-arm bridge, convert it into a voltage change signal, and transmit it to the data analysis module; the data analysis module is used to convert the voltage change signal into a blade door gap value of the wire cutter, and present the blade door gap value. The above-mentioned wire cutter knife door gap detection device based on strain gauge detection, through the cooperation of a double-arm electric bridge, a voltage measurement component and a data analysis module, can continuously monitor the slight changes in the knife door gap in real time, convert the physical deformation into a voltage change signal output, and realize continuous monitoring of the knife door gap. Through real-time data analysis, it is possible to accurately judge the changing trend of the wire cutting quality, ensure that the knife door gap is always kept in the optimal state, and help to greatly improve the automation and intelligence level of cigarette production; and by monitoring the knife door gap, potential faults caused by gaps that are too large or too small, such as "sheet running" and "stem head falling off", can be discovered in time. This helps to take preventive measures in advance, reduce the occurrence of faults, and help to improve the operating stability and safety of the wire cutter, while improving the processing accuracy and product quality of the wire cutter. The following is combined with Figures 1 to 3 , the wire cutting machine, the wire cutting machine knife door gap detection device and method are described in detail.

[0045] Once the gap between the blade door of the wire cutting machine 24 changes, it will directly affect the stress of the lower blade door, and thus affect the quality of wire cutting. In some embodiments, a wire cutting machine blade door gap detection device 23 based on strain gauge detection is as follows: Figure 1 As shown, it includes a double-arm bridge 9, a voltage measurement component 11 and a data analysis module 12; combined Figure 2The double-arm electric bridge 9 is used to be conductively connected to the resistance strain gauge 2 provided at the lower knife door 1 of the wire cutter 24 to obtain the resistance change signal of the resistance strain gauge 2; the voltage measuring component 11 is conductively connected to the double-arm electric bridge 9, and the voltage measuring component 11 is also conductively connected to the data analysis module 12; the voltage measuring component 11 is used to obtain the resistance change signal from the double-arm electric bridge 9, convert it into a voltage change signal, and transmit it to the data analysis module 12; the data analysis module 12 is used to convert the voltage change signal into the knife door gap value of the wire cutter 24, and present the knife door gap value. This design, through the coordination of the double-arm bridge 9, the voltage measurement component 11, and the data analysis module 12, can continuously monitor minute changes in the blade-gate gap in real time, converting physical deformation into a voltage change signal output, thus achieving continuous monitoring of the blade-gate gap. Through real-time data analysis, it is possible to accurately determine the changing trend of the shred quality, ensuring that the blade-gate gap is always maintained at an optimal state, which is conducive to significantly improving the automation and intelligent level of cigarette production. Furthermore, by monitoring the blade-gate gap, potential faults caused by excessive or insufficient gaps, such as "sheet slippage" and "stem dropout," can be promptly detected. This helps to take preventive measures in advance, reduce the occurrence of faults, and improve the operational stability and safety of the shredder, while also enhancing the processing accuracy and product quality of the shredder.

[0046] In some embodiments, the strain gauge-based blade gap detection device 23 for a wire cutter further includes a display panel 13; the voltage measurement component 11 is further electrically connected to the display panel 13 via the data analysis module 12; and the data analysis module 12 displays the blade gap value via the display panel 13. Exemplarily, the data analysis module 12 is integrated with the display panel 13. This design allows the display panel 13 to present the blade gap value in real time, allowing operators to intuitively observe the changing trend of the blade gap without relying on complex data analysis tools or additional monitoring equipment. This real-time visualization facilitates rapid response to changes in equipment status, ensuring that the wire cutter is always operating in optimal condition. Furthermore, by displaying the blade gap value in real time on the display panel 13, operators can promptly detect gap anomalies, such as gaps that are too large or too small, allowing them to take preventive measures. This early warning function effectively reduces equipment downtime and maintenance costs, improving the operational stability and production efficiency of the wire cutter. On the other hand, the introduction of the display panel 13 simplifies the operational process, allowing operators to quickly access key data without relying on the complex output of the data analysis module 12. This improves the device's usability, lowers the technical requirements for operators, and enhances the device's versatility and applicability. Furthermore, the display panel 13 not only provides real-time data but also offers an intuitive reference for equipment management. Operators can make precise adjustments based on the displayed blade clearance value, optimizing the cutter's processing accuracy and product quality, further enhancing the automation and intelligence of cigarette production.

[0047] In some embodiments, the strain gauge-based wire cutter blade gap detection device 23 further includes an amplifier 10; the voltage measurement component 11 is electrically connected to the dual-arm bridge 9 via the amplifier 10. The resistance change signal generated by the resistance strain gauge 2 can be very weak, and direct measurement may result in signal distortion or difficulty in accurately capturing it. This embodiment utilizes the amplifier 10 to amplify these weak voltage change signals, thereby improving signal strength and stability. This enables the voltage measurement component 11 to more accurately acquire and process the signal, thereby improving the accuracy of blade gap measurement. Furthermore, in a production environment, various electromagnetic interferences may exist around the wire cutter 24, potentially affecting signal transmission and measurement accuracy. By amplifying the signal, the amplifier 10 effectively reduces the effects of noise and interference on the signal, thereby improving the measurement system's anti-interference capability and ensuring the reliability of the measurement results. Furthermore, the introduction of the amplifier 10 expands the device's measurement range, enabling it to detect even smaller blade gap changes. This is crucial for achieving high-precision blade gap monitoring, particularly in applications where precise control of the blade gap is required to ensure wire cutting quality. At the same time, higher sensitivity also means that the device can respond to slight changes in the knife-gate gap more promptly, thereby better adapting to different production needs. On the other hand, by pre-processing the signal through the amplifier 10, the processing burden of the data analysis module 12 can be reduced, enabling it to process and analyze data more efficiently. This not only improves the operating efficiency of the entire system, but also enhances the stability and reliability of the system, and reduces misjudgments or failures caused by improper signal processing. On the other hand, since the amplifier 10 has already amplified the signal, the voltage measurement component 11 can use a relatively low-precision measurement device, thereby reducing the cost of the system. At the same time, this also makes the entire device more flexible, and suitable measurement components can be selected according to different application scenarios without having to worry about insufficient signal strength.

[0048] In some embodiments, the strain gauge-based blade gap detection device 23 for a wire cutter further includes an audible and visual alarm mechanism 14. The data analysis module 12 is further electrically connected to the audible and visual alarm mechanism 14, configured to generate an alarm when the blade gap value exceeds a preset range. This design allows the audible and visual alarm mechanism 14 to immediately sound an alarm when the blade gap value exceeds the preset range, prompting the operator to take timely action. This effectively avoids serious malfunctions caused by abnormal blade gaps, thereby reducing the risk of equipment damage and production interruptions. Furthermore, the audible and visual signals of the audible and visual alarm mechanism 14 quickly attract the operator's attention, ensuring timely transmission of alarm information even in noisy production environments. This helps the operator quickly respond to abnormal conditions, avoids safety incidents caused by delayed handling, and improves the safety of the wire cutter's operation. Furthermore, by promptly detecting and addressing abnormal blade gaps, the audible and visual alarm mechanism 14 helps reduce downtime caused by equipment failures. This allows the operator to adjust the equipment promptly at the earliest possible stage, avoiding further production delays, thereby improving production efficiency and equipment utilization. On the other hand, the early warning function of the audible and visual alarm mechanism 14 enables operators to promptly detect and address any abnormalities in the blade-door clearance at the earliest stage, thus preventing equipment damage caused by the abnormal clearance. This not only reduces the frequency and cost of equipment maintenance, but also extends the equipment's service life. Furthermore, the audible and visual alarm mechanism 14 provides an intuitive alarm method, eliminating the need for operators to constantly monitor the output of the display panel 13 or the data analysis module 12. This design reduces the operator's workload, allowing them to focus more on other production tasks while ensuring the normal operation of the equipment.

[0049] In some embodiments, the strain gauge-based wire cutter blade gap detection device 23 further includes the resistance strain gauge 2. The operating principle of the resistance strain gauge 2 is based on the resistance strain effect of metal materials. When a metal material is deformed by an external force, its resistance value changes accordingly. By measuring the change in the resistance value of the resistance strain gauge 2, the strain of the metal material, i.e., the degree of deformation, can be calculated, thereby inferring the change in the blade gap.

[0050] In some embodiments, the number of the resistance strain gauges 2 is at least two, and each of the resistance strain gauges 2 is connected in series in sequence. In some embodiments, the number of the resistance strain gauges 2 is three, which are respectively arranged at the left, middle and right parts of the lower knife door 1, and the three resistance strain gauges 2 are connected in series in sequence. Exemplarily, the three resistance strain gauges 2 are respectively arranged at the left end, middle and right end of the lower knife door 1. Exemplarily, after the three resistance strain gauges 2 are connected in series in sequence, they are conductively connected to the double-arm bridge 9 through one amplifier 10, and the three resistance strain gauges 2 are also conductively connected to the double-arm bridge 9 through three amplifiers 10, that is, there are four amplifiers 10 and four detection circuits in total. This design, on the one hand, can comprehensively monitor the deformation of the knife door at different locations, thereby more accurately reflecting the overall stress state and deformation trend of the knife door, avoiding the omission of important information due to local monitoring; it can also evaluate the uniformity of the knife door gap. If the strain values at the three locations differ significantly, it indicates that the knife door gap may be uneven, which helps to promptly discover and adjust the installation or operating status of the knife door, ensuring the consistency of the wire cutting quality, thus achieving the effect of comprehensively monitoring the deformation of the knife door. On the other hand, the three resistance strain gauges 2 are connected in series, which can comprehensively process multiple strain signals. This series connection can effectively improve the strength and stability of the signal and reduce the measurement error caused by the failure of a single strain gauge or weak signal. Even if one of the resistance strain gauges 2 fails, the other two strain gauges can still provide valid measurement data, thereby ensuring the normal operation of the system. This redundant design improves the measurement accuracy, reliability and fault tolerance of the entire measurement system. On the other hand, multiple resistance strain gauges 2 can monitor the deformation of the knife door at different locations in real time at multiple locations and transmit these signals to the double-arm bridge 9 and data analysis module 12. Through real-time data analysis, operators can promptly understand the changing trends of the blade door gap, enabling dynamic adjustments to ensure that the gap remains optimal. Furthermore, since the uniformity of the blade door gap is crucial to wire cutting quality, multi-point monitoring and real-time feedback allow operators to dynamically adjust the blade door installation or operating parameters based on the strain conditions at different locations, thereby improving the wire cutting machine's processing accuracy and product quality. Furthermore, the uniformity and stability of the blade door gap directly impact wire cutting quality. Therefore, multi-point monitoring and dynamic adjustments ensure that the wire cutting machine always operates in optimal conditions, thereby improving the uniformity and consistency of wire cutting, enhancing product quality, and reducing production interruptions and equipment failures caused by gap anomalies, thereby increasing production efficiency and equipment utilization.

[0051] For example, in an embodiment having multiple amplifiers 10 and multiple detection circuits, by monitoring the strain conditions at three different locations, the specific location of the abnormal blade gate gap can be quickly located. For example, if the left resistance strain gauge 2 detects a significant strain change, while the strain changes at the other two locations are smaller, this may indicate a problem with the left blade gate gap. This fault location function helps to quickly diagnose and resolve problems, reducing equipment downtime. Furthermore, when the resistance change value of the resistance strain gauge 2 at any location, i.e., the resistance change signal, exceeds a preset range, the data analysis module 12 can cooperate with the sound and light alarm mechanism 14 to issue an alarm, reminding the operator to take timely measures. Therefore, serious faults caused by abnormal blade gate gap, such as "sheet slippage" and "stem head drop", can be effectively avoided, thereby improving the operational stability and safety of the equipment. In this way, the blade gate preload force and material level height of the wire cutter 24 can be maintained in a stable state for different brands of wire cutters in wire production. This stability directly promotes the stability of the wire cutting force, thereby ensuring the continuous stability of the wire cutting quality.

[0052] Exemplarily, the strain gauge-based blade door gap detection device 23 for a wire cutter also includes an adjustment module, electrically connected to the data analysis module 12 and further configured to be operatively connected to the lower blade door 1 to adjust the position or cutting control parameters of the lower blade door 1 based on the blade door gap value, thereby returning the blade door gap of the lower blade door 1 to a preset range. This design, on the one hand, automatically adjusts the lower blade door position or cutting parameters, reducing manual intervention and improving the accuracy and timeliness of adjustments. It also rapidly responds to real-time monitoring data to ensure that the blade door gap remains within the preset range, thereby enhancing overall system stability. Furthermore, it reduces downtime, optimizes production processes, and improves equipment utilization, thereby improving production efficiency. Precisely controlling the blade door gap reduces quality fluctuations, improves the uniformity and consistency of the cut, and thus improves product quality. Furthermore, it helps prevent malfunctions caused by gap anomalies, extends equipment life, and reduces maintenance costs, thereby enhancing equipment stability. It also simplifies the operating process, improves operational convenience, and reduces the technical requirements for operators. On the other hand, it can also provide data support, realize data-driven optimization, assist in equipment optimization and intelligent management, and enhance corporate competitiveness.

[0053] Specifically, the adjustment module is electrically connected to the data analysis module 12 and is drive-connected to the lower blade door 1. This allows the system to automatically adjust the position or cutting control parameters of the lower blade door 1 based on the real-time measurement of the blade door gap value, thereby reducing the need for manual intervention and improving the accuracy and timeliness of adjustments. Through real-time monitoring and analysis of the blade door gap value by the data analysis module 12, the adjustment module can quickly respond and adjust the position or cutting control parameters of the lower blade door 1 in real time, thus achieving real-time feedback and closed-loop control. This closed-loop control mechanism ensures that the blade door gap always remains within the preset range, improving the stability and reliability of the system. The automated adjustment function makes blade door gap adjustment faster and more accurate, reducing equipment downtime caused by gap anomalies. Operators no longer need to manually adjust the blade door gap, thereby improving production efficiency and equipment utilization. Furthermore, the adjustment module can automatically adjust the position or cutting control parameters of the lower blade door 1 based on real-time data, ensuring that the wire cutter always operates in optimal conditions. This optimized production process reduces production delays caused by improper gap adjustment and further improves production efficiency. As can be seen from the above description, the adjustment module precisely adjusts the position of lower blade door 1 or cutting control parameters based on the real-time monitoring of the blade door gap value, ensuring that the blade door gap always remains within the preset range. This precise control helps improve the uniformity and consistency of shredded tobacco, thereby enhancing product quality. Through automated adjustment, even minor variations in the blade door gap are promptly corrected, reducing quality fluctuations caused by gap variations. This helps maintain stable and consistent product quality and meet high-quality production requirements. The adjustment module can promptly adjust the blade door gap to prevent equipment failures caused by excessive or insufficient gaps, such as common problems such as "sheet slippage" and "stem dropout." For example, sheet slippage occurs when tobacco leaves are not cut into the required shreds during the shredding process, but instead remain as larger flakes and mix into the shredded tobacco, resulting in substandard product quality. This preventative adjustment function improves equipment operational stability and safety, reduces the risk of equipment damage, and, by timely adjusting the blade door gap, reduces equipment wear and damage caused by gap anomalies, thereby extending equipment life and reducing maintenance costs. The automated function of the adjustment module reduces operator reliance on blade door gap adjustment and simplifies the operational process. Operators can focus more on other production tasks, improving work efficiency. The automated adjustment module makes blade clearance adjustment more convenient and efficient, lowering the technical requirements for operators and improving the system's usability and versatility. Furthermore, the module's automated adjustments are based on real-time monitoring of blade clearance values. This data can be recorded and analyzed, providing data support for equipment optimization and management. This data analysis allows for further optimization of adjustment strategies, improving equipment efficiency and product quality. The automated adjustment module allows the operating status of the wire cutter to be monitored and managed in real time, enabling intelligent production.This intelligent management helps improve production efficiency, reduce production costs, and enhance the competitiveness of enterprises.

[0054] The following description continues with reference to the strain gauge-based blade door gap detection device 23 for a wire cutter. In some embodiments, the resistance strain gauge-based blade door gap detection device 23 for a wire cutter comprises a lower blade door 1, a resistance strain gauge 2, a strain gauge slot 4, a wiring slot 3, a double-arm bridge 9, a voltage measurement component 11, a data analysis module 12, a display panel 13 for displaying the blade door gap, and an audible and visual alarm mechanism 14 for providing a warning when the blade door gap exceeds a preset range.

[0055] As an example, Figure 2 As shown, there are three resistance strain gauges 2, which are fixed at the left, center, and right positions of the lower knife door 1 respectively. The resistance values of the three resistance strain gauges 2 are connected in series to the double-arm bridge 9. The double-arm bridge 9 is electrically connected to the voltage measurement component 11 to ensure the accurate acquisition and transmission of the voltage signal. The double-arm bridge 9 can sensitively respond to the resistance change caused by the change in the knife door gap, and then convert it into a change in the voltage signal. As an example, the resistance strain gauge 2 is a high-sensitivity resistance strain gauge 2, also known as a high-precision resistance strain gauge 2, and the resistance change accuracy measurement can reach 1% or even 0.1% of the deformation, or even lower.

[0056] The voltage signal captured by the voltage measurement component 11 is fed into the data analysis module 12 for processing. This module uses advanced algorithms to convert the voltage signal into the actual value of the blade-gate clearance, presenting it to the operator in a clear and easy-to-read format on the display panel 13. This real-time feedback mechanism significantly improves production efficiency, allowing the operator to quickly understand the current status of the blade-gate clearance. In some embodiments, an amplifier 10 is connected between the voltage measurement component 11 and the dual-arm bridge 9.

[0057] The data analysis module 12 is connected to the voltage measurement component 11 and the resistance strain gauge 2, and calculates the knife door gap of the real-time wire cutting machine 24 according to a preset program based on the resistance change of the resistance strain gauge 2.

[0058] In some embodiments, the strain gauge-based blade gap detection device 23 for the wire cutter is further equipped with an audible and visual alarm mechanism 14. When the detected blade gap exceeds a preset range, the audible and visual alarm mechanism 14 is immediately activated, emitting a distinct audible and visual signal to alert the operator to take timely adjustment measures to ensure the normal operation of the wire cutter 24 and stable product quality.

[0059] This design enables real-time measurement of minute changes in the blade gap of the wire cutter 24, converting physical deformation into electrical output signals, thereby enabling continuous monitoring of the blade gap. This real-time monitoring helps promptly detect abnormal gap changes, providing data support for timely adjustments, thereby improving the processing accuracy and product quality of the wire cutter 24. Furthermore, monitoring the blade gap using the resistance strain gauge 2 can promptly identify potential faults caused by excessive or insufficient gaps, thereby facilitating preventive measures, reducing the likelihood of failures, and improving the operational stability and safety of the wire cutter 24.

[0060] In some embodiments, a shredder 24 such as Figure 2 As shown, it includes a lower knife door 1 and a wire cutter knife door gap detection device 23 based on strain gauge detection as described in any embodiment; the lower knife door 1 serves as the cutting position for the knife roller of the wire cutter 24; the double-arm bridge 9 of the wire cutter knife door gap detection device 23 based on strain gauge detection is electrically connected to the resistance strain gauge 2 provided on the lower knife door 1. Due to the use of the wire cutter knife door gap detection device 23 based on strain gauge detection as described in any embodiment, the wire cutter 24 also has the beneficial technical effects of the wire cutter knife door gap detection device 23 based on strain gauge detection as described in the relevant embodiment, which will not be further described here.

[0061] In some embodiments, such as Figure 2 As shown, the lower knife door 1 is provided with a wiring slot 3 and a strain gauge slot 4, wherein the wiring slot 3 is connected to the strain gauge slot 4; the wire cutter 24 also includes a lower copper bar chain drive shaft 5, a knife door seat 6, a cover plate 7, and a copper bar chain 8; the lower knife door 1 is disposed on the knife door seat 6, and the cover plate 7 is disposed on the lower knife door 1; the lower copper bar chain drive shaft 5 is connected to the copper bar chain 8 for driving the copper bar chain 8 to transport material to the lower knife door 1 for cutting. In other embodiments, the wire cutter 24 may also be provided with other structural components. As an example, for embodiments of the wire cutter 24 having an upper knife door or other knife doors, the lower knife door 1 described in each embodiment may also be replaced by an upper knife door or other knife door.

[0062] The wire cutter 24 features carefully machined wiring troughs 3 and strain gauge slots 4 on the lower blade door 1 to ensure precise installation and signal transmission of the resistance strain gauges 2, making the strain gauge-based detection system 23 for the wire cutter's blade gap detection a viable solution. For example, the high-precision resistance strain gauges 2 are securely embedded in the strain gauge slots 4 using a specialized adhesive, ensuring they accurately reflect deformation when subjected to force. During operation, the lower copper chain drive shaft 5 drives the copper chain 8 to transport material, which is then transported through the cover plate 7 to the blade door seat 6 and ultimately cut by the blade rollers of the wire cutter 24 at the lower blade door 1. During this process, the three resistance strain gauges 2 mounted on the lower blade door 1 undergo subtle deformation due to the cutting force, which is then converted into an electrical signal. This signal is transmitted via wires within the wiring trough 3 to a double-arm bridge 9 for initial processing. It then passes through a high-sensitivity amplifier 10 to enhance its identifiability and is input to the voltage measurement component 11 for precise measurement. Finally, after complex and precise calculations by the data analysis module 12, the actual value of the blade gap of the wire cutter 24 is accurately extracted and clearly presented on the intuitive display panel 13, ensuring the wire cutting quality and the stability of the equipment operation.

[0063] The resistance strain gauge 2 is set at the lower knife door 1 of the wire cutting machine 24, which is one of the key designs. In order to ensure that the changes in the force on the knife door during the wire cutting process can be fully and accurately captured, the resistance strain gauge 2 is pasted at the center point and the midpoint of the two side edges of the lower knife door 1 of the wire cutting machine 24. The midpoint of the two side edges is the middle position of the left end and the middle position of the right end of the lower knife door 1, such as the middle position of the left end and the right end in the horizontal direction in the vertical direction. The midpoint of the two side edges can reflect the force conditions on both sides of the knife door when they are in contact with the blade, and is particularly sensitive to detecting changes in the gap on both sides of the knife door; the center point can reflect the force conditions in the central area of the knife door, which helps to evaluate the balance and stability of the entire knife door.

[0064] When installing the resistance strain gauge 2, it is necessary to accurately calculate and reserve a sufficient reserved gap δ to ensure that the resistance strain gauge 2 can operate normally and is not affected by additional stress. For example, the reserved gap δ is set based on the thickness a of the resistance strain gauge 2, the thickness b of the adhesive layer, and the reserved safety gap c to ensure that the resistance strain gauge 2 can not only fit tightly to the surface of the lower knife door 1 after installation but also maintain a certain degree of flexibility, thereby accurately reflecting the force changes of the knife door. Among them, the thickness a of the resistance strain gauge 2 is determined according to the selected specifications of the resistance strain gauge 2; the thickness b of the adhesive layer is determined according to the performance and application process of the adhesive; and the reserved safety gap c is determined according to the thermal expansion and contraction of the lower knife door 1 or its material and the influence of vibration and impact.

[0065] Adding the above three parameter values gives the total reserved gap δ, i.e., δ = a + b + c. During the actual installation process, ensure that the gap between the resistance strain gauge 2 and the surface of the strain gauge slot 4 on the lower knife door 1 does not exceed δ to avoid excessive stress concentration and measurement errors.

[0066] Combine Figure 3 The lower knife door 1 is mainly subjected to the following forces during the slicing process:

[0067] Vertical cutting force: It is generated by the direct impact of the cut material such as tobacco on the lower knife door 1 and is the most important force in the cutting process.

[0068] Lateral extrusion force: Due to the lateral movement or extrusion of the material that may occur during the cutting process, both sides of the lower knife door 1 are subjected to a certain amount of pressure.

[0069] Vibration and shock: The vibration and occasional shock generated during the cutting process, although these forces may not be continuous, will cause instantaneous stress changes on the lower knife door 1 and the resistance strain gauge 2.

[0070] As an example, this application deploys three evenly distributed strain gauges 2 in the critical stress area of the lower blade door 1, each independently monitoring the local stress conditions in that area. Although each strain gauge 2 detects different stress details, a comprehensive analysis shows that the three strain gauges 2, connected in series, can fully reflect the overall stress state of the blade door.

[0071] The force condition is calculated using the formula F=k•Δε, where k represents the deformation coefficient, a fixed physical quantity; Δε is the actual deformation measured by the resistance strain gauge 2. As an example, for these three resistance strain gauges 2, the measured deformation values are Δε1, Δε2, and Δε3 respectively. To evaluate the stability and consistency of these deformation data, the average value ε of the three deformation values is first calculated using the formula ε 平均 = (Δε1 + Δε2 + Δε3) / 3. Then the standard deviation SD of these deformation values is further calculated to quantify the degree of dispersion between them. The standard deviation SD is related to the preset threshold ε 标准 Comparison becomes a key step in judging the validity of data. 标准 When , it means that there are significant differences in the deformation data detected by the three resistance strain gauges 2, but this difference is an effective reflection of the actual stress state, rather than random noise. In this case, the resistance change of the resistance strain gauge 2 will be regarded as a valid signal and transmitted to the back-end module for further processing. On the contrary, if SD is less than or equal to ε 标准, the difference between the deformation data is small and may be caused by measurement noise rather than actual force changes. In this case, the resistance change of strain gauge 2 is considered invalid data and will not be included in the subsequent data collection and analysis process.

[0072] Assuming that the original resistance of the resistance strain gauge 2 is R0 and the resistance change caused by the gap change is ΔR, the relationship between the gap change ΔL and ΔR can be approximately expressed as: ΔL=k•R0ΔR, where k is the calibration coefficient, which needs to be obtained through experimental calibration and reflects the sensitivity of the device to gap changes.

[0073] As a precision sensor, the core function of the strain gauge 2 is to convert the tiny deformation of the blade door when subjected to force into a change in resistance, known as the resistance change signal. Once the strain gauge 2 senses the change in force on the blade door and converts it into a change in resistance, this important information is transmitted to the double-arm bridge 9 via the wires in the wiring trough 3. The signal is then amplified by amplifier 10. Amplifier 10 is used to increase the amplitude of the resistance change signal, bringing it to a level that is more easily processed and measured by subsequent circuits. Through amplification, the useful information in the resistance change signal is highlighted, while noise and interference are relatively reduced.

[0074] The amplified resistance change signal then enters voltage measurement component 11, where it is further converted into a voltage value, serving as a voltage change signal. Voltage is a commonly used and easily processed physical quantity in electronic systems. Voltage measurement component 11 utilizes precise circuit design and calibration techniques to ensure accurate conversion of resistance changes into corresponding voltage output signals.

[0075] The voltage signal is then fed into the data processing module 12 for further analysis and processing. For example, the data processing module 12 includes a high-performance processor, memory, and an algorithm library, enabling real-time calculation, filtering, calibration, and compensation of the received voltage signal. Through these processing steps, the data processing module extracts key information about the actual blade clearance and converts it into a readily understandable and usable data format.

[0076] Finally, the processed data is transmitted to a display panel 13, such as a monitor, for display. As a crucial interface for human-computer interaction, the monitor presents the actual value of the blade-door clearance in an intuitive and clear manner. The operator can observe the data on the monitor to understand the force applied to the blade door and the gap changes, making appropriate adjustments and optimizations as needed. The entire process completes the complete conversion and transmission chain from the physical quantity of force, to an electrical signal indicating the resistance change, and then to digital information representing the actual value of the blade-door clearance.

[0077] In some embodiments, the strain gauge-based blade-door clearance detection device 23 for the wire cutter is further equipped with an audible and visual alarm mechanism 14. When the detected blade-door clearance exceeds a preset range, the audible and visual alarm mechanism 14 is immediately activated, emitting a distinct audible and visual signal to alert the operator to take timely adjustment measures to ensure the normal operation of the wire cutter 24 and stable product quality.

[0078] In some embodiments, combined Figure 1 and Figure 2 The wire cutting machine 24 includes a lower knife door 1 and a knife door gap detection device 23 for wire cutting machine based on strain gauge detection. The knife door gap detection device 23 for wire cutting machine based on strain gauge detection includes a resistance strain gauge 2, a wiring groove 3, a strain gauge groove 4, a lower copper bar chain driving shaft 5, a knife door seat 6, a cover plate 7, a copper bar chain 8, a double-arm bridge 9, an amplifier 10, a voltage measurement component 11, a data analysis module 12, a display panel 13 and an audible and visual alarm mechanism 14; combined with Figure 3 The wire cutter 24 also includes a knife roller 15, a blade 16, an upper knife door seat 17, an upper copper chain 18, a lower copper chain 20 and a lower knife door seat 21. For ease of understanding, Figure 3 Tobacco material 19 is also shown.

[0079] In this embodiment, the lower blade door 1 of the wire cutter 24 is machined with three strain gauge slots 4 (left, center, and right) and a wiring slot 3. The depth of each strain gauge slot 4 is the sum of the selected resistance strain gauge 2, the adhesive thickness, and the reserved safety gap. The resistance strain gauge 2 offers high precision, high reliability, high sensitivity, and a wide range of applications. The wiring trough 3 has the characteristics of protection, neatness, size adaptability and good electrical performance to ensure the accuracy and reliability of the resistance strain gauge 2 measurement system; the double-arm bridge 9 has high precision, stability and versatility, and is widely used in the field of resistance measurement; the amplifier 10 can enhance signal strength, achieve impedance matching, perform signal preprocessing and improve measurement accuracy and reliability; the voltage measurement component 11 contains a series of highly integrated electronic components to ensure the accuracy and reliability of measurement, and is used to accurately measure the voltage value in the circuit; the data analysis module 12 receives the data output by the voltage measurement component 11, and performs further processing and analysis, and intuitively displays the analysis results on the display panel 13 for user understanding and judgment; when the data analysis module 12 detects that the knife door gap exceeds the requirement, the data analysis module 12 can trigger the alarm mechanism, and at this time the sound and light alarm mechanism 14 starts working to notify the user or relevant personnel through sound, light signals or network communication.

[0080] In some embodiments, a wire cutter knife door gap detection method based on strain gauge detection is implemented by the wire cutter knife door gap detection device 23 based on strain gauge detection described in any embodiment, that is, the wire cutter knife door gap detection method based on strain gauge detection is implemented based on the wire cutter knife door gap detection device 23 based on strain gauge detection described in any embodiment. Since the wire cutter knife door gap detection device 23 based on strain gauge detection described in any embodiment is adopted, the wire cutter knife door gap detection method based on strain gauge detection also has the beneficial technical effects of the wire cutter knife door gap detection device 23 based on strain gauge detection described in the relevant embodiment, which will not be elaborated here. In some embodiments, a method for detecting the knife door gap of a wire cutter based on strain gauge detection includes the following steps: the wire cutter 24 performs cutting at the lower knife door 1; the resistance change signal of the resistance strain gauge 2 is obtained through the double-arm bridge 9; the voltage measurement component 11 obtains the resistance change signal from the double-arm bridge 9, converts it into a voltage change signal, and transmits it to the data analysis module 12; the data analysis module 12 converts the voltage change signal into a knife door gap value of the wire cutter 24, and presents the knife door gap value.

[0081] It should be noted that other embodiments of the present application also include a wire cutter, a wire cutter knife door gap detection device and a method that can be implemented by combining the technical features in the above embodiments.

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A wire cutting machine blade door gap detection device (23) based on strain gauge detection, characterized in that: It includes a double-arm bridge (9), a voltage measurement component (11) and a data analysis module (12); The double-arm electric bridge (9) is used to be electrically connected to a resistance strain gauge (2) provided at a lower knife door (1) of a wire cutter (24) to obtain a resistance change signal of the resistance strain gauge (2); The voltage measurement component (11) is conductively connected to the double-arm bridge (9), and the voltage measurement component (11) is also conductively connected to the data analysis module (12); The voltage measurement component (11) is used to obtain the resistance change signal from the double-arm bridge (9), convert it into a voltage change signal, and transmit it to the data analysis module (12); The data analysis module (12) is used to convert the voltage change signal into a knife door gap value of the wire cutter (24) and present the knife door gap value.

2. The wire cutting machine blade door gap detection device (23) based on strain gauge detection according to claim 1 is characterized in that: The wire cutting machine blade door gap detection device (23) based on strain gauge detection further includes a display panel (13); The voltage measurement component (11) is also conductively connected to the display panel (13) via the data analysis module (12); The data analysis module (12) presents the knife door gap value via the display panel (13).

3. The wire cutting machine blade door gap detection device (23) based on strain gauge detection according to claim 1 is characterized in that: The wire cutting machine blade door gap detection device (23) based on strain gauge detection further includes an amplifier (10); The voltage measurement component (11) is conductively connected to the double-arm bridge (9) via the amplifier (10).

4. The wire cutting machine knife door gap detection device (23) based on strain gauge detection according to claim 1 is characterized in that: The wire cutting machine blade door gap detection device (23) based on strain gauge detection further includes an audible and visual alarm mechanism (14); The data analysis module (12) is also electrically connected to the sound and light alarm mechanism (14) and is used to issue an alarm via the sound and light alarm mechanism (14) when the knife door gap value exceeds a preset range.

5. The wire cutting machine knife door gap detection device (23) based on strain gauge detection according to any one of claims 1 to 4, characterized in that: The wire cutting machine blade door gap detection device (23) based on strain gauge detection further comprises the resistance strain gauge (2).

6. The wire cutting machine blade door gap detection device (23) based on strain gauge detection according to claim 5 is characterized in that: The number of the resistance strain gauges (2) is at least two, and the resistance strain gauges (2) are sequentially connected in series.

7. The wire cutting machine knife door gap detection device (23) based on strain gauge detection according to claim 6 is characterized in that: The number of the resistance strain gauges (2) is three, which are respectively arranged on the left, middle and right parts of the lower knife door (1), and the three resistance strain gauges (2) are sequentially connected in series.

8. A shredder (24), characterized in that: It comprises a lower knife door (1) and a wire cutting machine knife door gap detection device (23) based on strain gauge detection as described in any one of claims 1 to 7; The lower knife door (1) serves as the knife roller cutting position of the shredder (24); The double-arm electric bridge (9) of the wire cutting machine knife door gap detection device (23) based on strain gauge detection is electrically connected to the resistance strain gauge (2) provided at the lower knife door (1).

9. The shredder (24) according to claim 8, characterized in that: The lower knife door (1) is provided with a wiring groove (3) and a strain gauge groove (4), and the wiring groove (3) is connected to the strain gauge groove (4); The wire cutting machine (24) further comprises a lower copper chain driving shaft (5), a knife gate seat (6), a cover plate (7) and a copper chain (8); The lower knife door (1) is arranged on the knife door seat (6), and the cover plate (7) is covered on the lower knife door (1); The lower copper chain driving shaft (5) is drivingly connected to the copper chain (8) and is used to drive the copper chain (8) to transport materials to the lower knife door (1) for cutting.

10. A method for detecting the gap between blades of a wire cutting machine based on strain gauge detection, characterized in that: Including steps: The shredder (24) performs cutting at the lower knife door (1); Obtaining a resistance change signal of the resistance strain gauge (2) through a double-arm bridge (9); The voltage measurement component (11) obtains the resistance change signal from the double-arm bridge (9), converts it into a voltage change signal, and transmits it to the data analysis module (12); The data analysis module (12) converts the voltage change signal into a knife door gap value of the wire cutter (24) and presents the knife door gap value.

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