Intelligent belt scale calibration device and method

Abstract

This invention relates to the field of electronic belt scale calibration technology, and discloses an intelligent belt scale calibration device and method. The intelligent belt scale calibration device includes: a frame on which a belt scale is mounted; a weight loading and unloading mechanism, which includes a suspended crossbeam, a hinged component, and a lifting drive component; a weight synchronization mechanism; a control module and several calibration weights, each of which is hung on the bottom of a corresponding slider; the control module is electrically connected to the lifting drive component and the synchronization drive component; when belt scale calibration is required, the belt scale operates without load, and the control module controls the synchronization drive component to drive the slider to move at the same speed as the belt scale, while simultaneously controlling the lifting drive component to drive the suspended crossbeam and the circular track to deflect; the purpose of this application is to solve the problems of poor consistency, poor timeliness, and low efficiency in conventional calibration methods.

Description

Technical Field

[0001] This invention relates to the field of electronic belt scale calibration technology, and in particular to an intelligent belt scale calibration device and method. Background Technology

[0002] In the tobacco processing production line of a cigarette factory, electronic belt scales (or belt scales) are used to weigh and measure tobacco leaves, shredded leaves, and stems. The accuracy of the electronic belt scales directly affects the processing quality of tobacco products. To ensure the accuracy of the scales, calibration is an essential and important task. This is because after the electronic belt scales have been running for a period of time, the operating conditions will change (tare weight, ambient temperature and humidity, mechanical deformation, etc.), and the measurement accuracy will not be guaranteed; therefore, regular or irregular calibration is required.

[0003] Currently, calibrating electronic belt scales using standard weights is considered the "gold standard" for scale calibration. The industry standard currently employs a manual process involving tare, weight placement, weight connection, and weight calibration. The main problems with this method are: poor consistency: different people placing and removing weights at different positions and intervals, along with other human factors, can all affect the calibration process and consequently the actual accuracy of the scale after calibration. Poor timeliness: frequent calibrations require significant manual intervention. Therefore, almost all tobacco factories schedule calibrations only at regular intervals, or only when a scale exhibits measurement anomalies, resulting in poor timeliness of measurement accuracy and potentially impacting the quality of the production process. Low efficiency: According to actual experience, it takes an average of 120 seconds to prepare the weights, 180 seconds to reach the site, 600 seconds to calibrate the scale, and 180 seconds to put the weights back; the total time is 1080 seconds; the calibration efficiency is 600 / 1080*100%=55.6%. A lot of time is spent in the process of handling the weights, resulting in low efficiency.

[0004] Therefore, it is necessary to improve a belt scale calibration device to overcome the problems of poor consistency, poor timeliness, and low efficiency of conventional calibration methods. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an intelligent calibration device for belt scales, which solves the problems of poor consistency, poor timeliness and low efficiency of conventional calibration methods in the prior art mentioned in the background art.

[0006] The present invention solves the above-mentioned technical problems through the following technical means:

[0007] A smart calibration device for belt scales includes:

[0008] A frame on which a belt scale is mounted;

[0009] A weight handling mechanism includes a suspended crossbeam, a hinge component, and a lifting drive component. The lifting drive component is mounted on a frame. The suspended crossbeam is positioned above the belt scale along the conveying direction of the belt scale. One side of the suspended crossbeam is rotatably connected to the frame via the hinge component, and the other side of the suspended crossbeam is located above the weighing area of ​​the belt scale. The telescopic end of the lifting drive component extends above the weighing area of ​​the belt scale and is rotatably connected to the suspended crossbeam.

[0010] A weight synchronization mechanism includes a ring track, a synchronization drive assembly, and several sliders. The ring track is installed at the bottom of the suspended crossbeam. Several sliders are slidably installed on the ring track. The synchronization drive assembly is installed on the ring track and is used to drive the movement of several sliders.

[0011] The control module and several calibration weights are respectively mounted on the bottom of the corresponding sliders; the control module is electrically connected to the lifting drive component and the synchronous drive component.

[0012] When belt scale calibration is required, the belt scale operates without load. The control module controls the synchronous drive component to drive the slider to move. The slider moves at the same speed as the belt scale. At the same time, the lifting drive component controls the suspended crossbeam and the circular track to deflect, so that the calibration weights hanging on the slider fall into the weighing area of ​​the belt scale and are disconnected from the slider. When the synchronous drive component drives the slider away from the weighing area of ​​the belt scale, the calibration weights are reattached to the bottom of the corresponding slider.

[0013] This invention replaces manual weight handling with a specially designed weight handling mechanism, specifically addressing the time-consuming and inefficient nature of manual weight handling in existing technologies. It eliminates the need for manual weight transport to and from the site. The control module directly controls the collaboration between the weight handling mechanism and the weight synchronization mechanism, synchronizing the slider with the belt scale speed. This ensures that the weights move smoothly with the belt after being placed on the scale, preventing weight swaying or positional shifts caused by relative motion, thus guaranteeing the accuracy of the weighing data and resolving errors caused by asynchronous weight placement with the belt. The automatic detachment and attachment of the weights from the slider eliminates the need for manual assistance, further enhancing automation and reducing calibration time. Compared to manual calibration, which requires separate steps for tare, weight placement, and calibration, this invention uses a unified control module to coordinate the actions of each mechanism, achieving integrated weight placement, weighing, weight recovery, and calibration. This significantly improves calibration efficiency, while standardized process execution ensures consistency in each calibration operation, avoiding accuracy issues caused by omissions or operational differences in manual step-by-step operations. In addition, it can be started at any time without the need for cumbersome steps such as preparing weights in advance and traveling back and forth to the site. It can realize real-time calibration on demand, and promptly correct the accuracy deviation of the belt scale caused by changes in working conditions (tare weight, temperature and humidity, mechanical deformation), ensuring the stability of measurement accuracy during the production process and reducing the potential impact on the processing quality of tobacco products.

[0014] Furthermore, the frame includes a support frame, a surrounding panel, and a mounting plate. The belt scale is mounted on the support frame, the surrounding panel is mounted on the support frame outside the belt scale, and the mounting plate is mounted on the top of the surrounding panel.

[0015] The above structural design provides a stable and precise installation position for the hinged components of the weight loading and unloading mechanism, ensuring the installation accuracy of the suspended crossbeam and guaranteeing the accuracy of lifting and deflection actions.

[0016] Furthermore, the hinge component includes a hinge or hinge, and the suspended crossbar is mounted on the mounting plate via the hinge or hinge.

[0017] The above-mentioned structural design, with its simple structure, flexible rotation, and strong stability, ensures that the suspended crossbeam can smoothly deflect under the drive of the lifting and lowering components, avoiding deviations in the placement of weights due to jamming at the hinge, ensuring the consistency of the weights' landing point during each calibration, and solving the problem of unstable weight placement by manual methods.

[0018] Furthermore, a connecting seat is installed at the telescopic end of the suspended crossbeam corresponding to the lifting drive component, and the connecting seat is hinged to the telescopic end of the lifting drive component; wherein, the lifting drive component is a cylinder or an electric actuator.

[0019] The above structural design, the design of the connecting seat realizes the rotational connection between the lifting drive component and the suspended crossbeam; and allows for flexible adaptation to the hinge of the hinge component.

[0020] Furthermore, the weight loading and unloading mechanism also includes a connecting plate and two mounting plates, which are mounted at both ends of the suspended crossbeam via the connecting plate; one of the mounting plates has a servo drive system mounting position on its top, and the other mounting plate has a counterweight mounting position on its top.

[0021] The above structural design, with its connecting plate and mounting plate, provides a stable mounting carrier for the circular track and synchronous drive components, ensuring the coaxiality and levelness of the circular track, preventing jamming or deviation during slider movement, guaranteeing the accuracy of the synchronous movement of the weights, and thus improving the consistency of the scale calibration.

[0022] Furthermore, the annular track is provided with a slider sliding track and a synchronous chain limiting track, and the synchronous chain limiting track is provided in the inner circle of the slider sliding track; a plurality of sliders are slidably installed on the slider sliding track.

[0023] The above structural design features a dual-track system that separates and limits the slider and the synchronous chain. The slider's sliding track provides a precise motion trajectory, ensuring the slider moves smoothly along the circular sliding track and preventing slider deviation that could lead to weight placement errors. The synchronous chain limiting track guides and limits the synchronous chain, preventing it from running off-track and ensuring the linkage accuracy between the synchronous chain and the slider. This ensures that the slider's movement speed is completely synchronized with the belt scale's speed, solving the problem of not being able to achieve synchronized movement of weights and belts during manual operation.

[0024] Furthermore, the synchronous drive assembly includes a sprocket, a connecting rod, a synchronous chain, and a servo drive system. The servo drive system is mounted on a servo drive system mounting position. Each mounting plate has a sprocket rotatably mounted on its bottom. The synchronous chain is wound around two sprockets. The servo drive system is used to drive the sprocket and the synchronous chain to rotate. The connecting rod connects the slider and the synchronous chain. The rotation of the synchronous chain drives the slider to rotate synchronously through the connecting rod.

[0025] In the aforementioned structural design, the servo drive system drives the sprocket and synchronous chain. This system features high-precision speed regulation, allowing precise adjustment of the output speed via the control module. This ensures a perfect match between the speed of the slider driven by the synchronous chain and the operating speed of the belt scale, minimizing errors. Compared to the randomness of manually placing weights, this significantly improves calibration accuracy and solves the problem of poor consistency. The transmission structure of the sprocket and synchronous chain boasts high transmission efficiency, strong stability, and precise transmission ratio, ensuring the smoothness and synchronization of the slider's movement and avoiding weighing errors caused by slider speed fluctuations. The connecting rod enables the linkage between the slider and the synchronous chain. This automated drive design completely replaces the manual pushing or adjusting of weights, further improving calibration efficiency.

[0026] Furthermore, the slider is provided with a linkage part, one end of the connecting rod is rotatably sleeved on the linkage part, and the other end of the connecting rod is rotatably connected to the position of the synchronous chain corresponding to the slider.

[0027] The above structural design, with the rotating connection at both ends of the connecting rod, realizes universal linkage between the synchronous chain and the slider, avoiding transmission jamming or uneven force caused by slight deviations between the synchronous chain's movement trajectory and the slider's sliding track, ensuring that the slider can smoothly follow the synchronous chain's movement and guaranteeing speed synchronization accuracy.

[0028] Furthermore, it also includes a storage cover, which is mounted on the annular track and installed on the side of the suspension crossbeam near the hinge component.

[0029] The above-described structural design provides a protective space for the calibration weights when they are not in use, preventing them from being contaminated by dust or debris in the production environment during non-calibration periods, or from being damaged by accidental collisions that could cause weight changes or loss of accuracy, thus ensuring the calibration accuracy of the weights.

[0030] Secondly, a smart calibration method for a belt scale, used in the aforementioned smart calibration device for a belt scale, the method comprising:

[0031] The calibration data of the belt scale is obtained, and the control signal of the synchronous drive component is adjusted according to the calibration data; the calibration data includes the belt scale operating speed and the calibration parameters of the weights.

[0032] The synchronous drive component is controlled to operate according to the control signal, and the operation of the synchronous drive component drives the slider to move; wherein, the speed of the slider movement is the same as the operating speed of the belt scale.

[0033] Control the lifting drive component to move, causing the suspended crossbeam and the ring track to deflect, so that the calibration weights hanging on the slider fall into the weighing area of ​​the belt scale and are disconnected from the slider.

[0034] Obtain the weighing data of the belt scale, compare it with the calibration table in the preset database, and output the calibration result of the belt scale.

[0035] The process setup of this method ensures that the slider speed adjusted by the synchronous drive component is completely synchronized with the belt scale by acquiring the real-time operating speed of the belt scale, thus avoiding weighing errors caused by speed mismatch and solving the problem of inaccurate synchronization during manual operation. Automated control achieves speed synchronization between the slider and the belt scale, ensuring that the weight moves smoothly with the belt after being placed on it, with no relative displacement of the weight during weighing, avoiding weighing data deviations caused by shaking or offset. The control module precisely controls the timing and stroke of the lifting drive component, ensuring that the weight always falls into the designated weighing area of ​​the belt scale with strong consistency, solving the problem of inconsistent weight placement during manual handling.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] This invention, through the collaborative design of the frame, weight handling mechanism, weight synchronization mechanism, and control module, achieves fully automated closed-loop control of the entire calibration process based on a standardized calibration method. This completely replaces tedious manual operations such as weight handling and calibration comparisons, effectively avoiding accuracy fluctuations caused by differences in position, interval, and experience during manual operation, and significantly improving calibration consistency and accuracy. Simultaneously, the device can respond to calibration commands in real time, eliminating the need for manual preparation of weights and on-site travel. Combined with a circular track, it enables the cyclic reuse of weights, significantly reducing the time spent on non-core operations and greatly improving calibration efficiency, thus solving the accuracy lag problem caused by periodic calibration intervals. Furthermore, the structural design of each mechanism eliminates the need for weight handling, reducing labor costs and potential production quality risks, providing reliable support for precise measurement in tobacco processing. Attached Figure Description

[0038] Figure 1 This is an assembly diagram of an intelligent calibration device for a belt scale according to an embodiment of the present invention;

[0039] Figure 2 This is one of the structural schematic diagrams of an intelligent calibration device for a belt scale according to an embodiment of the present invention;

[0040] Figure 3 This is one of the structural schematic diagrams of an intelligent calibration device for a belt scale according to an embodiment of the present invention;

[0041] Figure 4 This is a cross-sectional structural schematic diagram of an intelligent calibration device for a belt scale according to an embodiment of the present invention;

[0042] Figure 5 This is a flowchart illustrating an intelligent calibration method for a belt scale according to an embodiment of the present invention.

[0043] in,

[0044] 10. Rack; 11. Mounting plate;

[0045] 20. Belt scale; 21. Belt feed end; 22. Belt discharge end;

[0046] 30. Calibration weights; 31. Weight hangers;

[0047] 40. Weight loading and unloading mechanism; 41. Hinge; 42. Suspended crossbar; 43. Connecting seat; 44. Control cylinder; 45. Connecting plate; 46. Mounting plate;

[0048] 50. Weight synchronization mechanism; 51. Circular track; 511. Slider sliding track; 512. Synchronization chain limit track; 52. Slider; 521. Linkage part; 53. Hook; 54. Driving wheel; 55. Driven wheel; 56. Synchronization chain; 57. Rotating shaft; 58. Bearing mounting hole;

[0049] 60. Storage cover; 601. Storage space. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] like Figure 1-4 As shown, the present invention provides an intelligent calibration device for belt scales, comprising:

[0052] A frame 10 is provided, on which a belt scale 20 is installed. The belt scale 20 is provided with a belt feed end 21 and a belt discharge end 22 to realize the conveying and weighing of materials.

[0053] The weight handling mechanism 40 includes a suspended crossbeam 42, a hinge component, and a lifting drive component. The lifting drive component is a control cylinder 44, which is mounted on the frame 10. The suspended crossbeam 42 is positioned above the belt scale 20 along the conveying direction of the belt scale 20. One side of the suspended crossbeam 42 is rotatably connected to the frame 10 via a hinge component, which is a hinge 41. The other side of the suspended crossbeam 42 is located above the weighing area of ​​the belt scale 20. The lifting drive component is a control cylinder 44, whose telescopic end extends above the weighing area of ​​the belt scale 20 and is rotatably connected to the suspended crossbeam 42.

[0054] The weight synchronization mechanism 50 includes a ring track 51, a synchronization drive assembly, and several sliders 52. The ring track 51 is installed at the bottom of the suspended crossbeam 42. Several sliders 52 are slidably installed on the ring track 51. The synchronization drive assembly is installed on the ring track 51 and is used to drive the movement of several sliders 52. The synchronization drive assembly includes a drive wheel 54, a driven wheel 55, a connecting rod, a synchronization chain 56, a rotating shaft 57, and a servo drive system. The drive wheel 54 and the driven wheel 55 are rotatably installed through the rotating shaft 57, which is installed in the bearing mounting hole 58 of the mounting plate 46. The synchronization chain 56 drives the drive wheel 54 and the driven wheel 55. The servo drive system is used to drive the drive wheel 54 and the synchronization chain 56 to operate. A hook 53 is installed at the bottom of the slider 52 for hanging the calibration weight 30.

[0055] The control module and several calibration weights 30 are provided. Each calibration weight 30 is equipped with a weight hanging lug 31. The weight hanging lug 31 cooperates with the hook 53 to allow the several calibration weights 30 to be hung on the bottom of the corresponding slider 52. The control module is electrically connected to the control cylinder 44 and the servo drive system to realize the coordinated control of each mechanism.

[0056] When the belt scale 20 needs to be calibrated, the belt scale 20 operates under no-load. The control module controls the synchronous drive component to drive the slider 52 to move. The speed of the slider 52 is the same as the operating speed of the belt scale 20. At the same time, the control cylinder 44 drives the suspended crossbeam 42 and the circular track 51 to deflect, so that the calibration weight 30 hanging on the slider 52 through the hook 53 falls into the weighing area of ​​the belt scale 20 and is disconnected from the hook 53 of the slider 52. When the synchronous drive component drives the slider 52 away from the weighing area of ​​the belt scale 20, the calibration weight 30 is re-attached to the bottom of the hook 53 of the corresponding slider 52 through the weight hanging ear 31, realizing the recycling of the calibration weight 30.

[0057] In this embodiment, the weight handling mechanism 40 replaces the manual handling of the calibration weights 30, specifically solving the problems of time-consuming and inefficient manual handling in the prior art; there is no need to manually carry the calibration weights 30 back and forth to the site. The control module directly controls the collaboration between the weight placement and recovery mechanism 40 and the weight synchronization mechanism 50. The slider 52 is synchronized with the belt scale 20, ensuring that the calibration weight 30 moves smoothly with the belt after falling onto the belt scale 20. This avoids swaying or positional deviation of the calibration weight 30 due to relative motion, ensuring the accuracy of the weighing data and solving the error caused by the asynchronous movement of the belt when manually placing the calibration weight 30. The automatic detachment and attachment of the calibration weight 30 and the slider 52 eliminates the need for manual separation or retrieval, further improving the automation level of the process and shortening the calibration time. Compared to manual calibration, which requires step-by-step procedures such as tare, placing the calibration weight 30, and calibration, this invention coordinates the actions of each mechanism through the control module, realizing the integrated completion of the placement, weighing, retrieval, and calibration of the calibration weight 30. This significantly improves the efficiency of calibration, while the standardized process ensures the consistency of each calibration operation, avoiding accuracy problems caused by omissions or differences in operation during manual step-by-step operations. In addition, the calibration process can be started at any time without the need for cumbersome steps such as preparing calibration weights 30 in advance and traveling back and forth to the site. This enables real-time calibration as needed, and timely correction of the accuracy deviation of the belt scale 20 caused by changes in working conditions (tare weight, temperature and humidity, mechanical deformation), ensuring the stability of measurement accuracy during the production process and reducing the potential impact on the processing quality of tobacco products.

[0058] In practice, this embodiment selects a PLC controller as the core unit of the control module, paired with a touchscreen human-machine interface. The PLC controller has a built-in high-speed counter and analog input / output module, which can collect the operating speed signal of the belt scale 20, the position signal of the control cylinder 44, and the speed signal of the servo drive system in real time, realizing the coordinated closed-loop control of various mechanisms. The control module communicates with the control cylinder 44 and the servo drive system through an industrial bus with a communication delay of ≤10ms, ensuring accurate and timely command transmission. It also integrates a data storage module, which can record the parameters and results of each calibration, and supports historical data query and export, facilitating production traceability and equipment maintenance. In addition, the control module has a manual / automatic dual-mode switching function. In automatic mode, it can complete the entire calibration process according to a preset program, while manual mode can be used for equipment debugging and maintenance, adapting to different scenario requirements. Through the built-in calibration algorithm, it can automatically correct minor errors caused by mechanical deformation and temperature and humidity changes, further improving the calibration accuracy.

[0059] In this embodiment, the frame 10 includes a support frame, a surrounding plate, and a mounting plate 11. The belt scale 20 is mounted on the support frame, the surrounding plate is mounted on the support frame outside the belt scale 20, and the mounting plate 11 is mounted on top of the surrounding plate. The mounting plate 11 provides a stable and precise mounting position for the hinge 41 of the weight handling mechanism 40, ensuring the installation accuracy of the suspended crossbar 42 and guaranteeing the accuracy of lifting and deflection actions. At the same time, the surrounding plate can prevent dust from the production environment from entering the device, improving the adaptability of the equipment.

[0060] In fact, the mounting plate 11 and the surrounding plate are made of cold-rolled steel plate and bent into shape. The surface is treated with anti-corrosion and anti-static treatment to reduce external interference with the weighing of the calibration weight 30 and improve the adaptability of the equipment under harsh working conditions. The mounting plate 11 is fixed to the top of the surrounding plate by welding, and the mounting surface is milled to ensure flatness.

[0061] In this embodiment, the hinge component is a hinge 41, and the suspended crossbeam 42 is mounted on the mounting plate 11 via the hinge 41. The hinge 41 has the advantages of simple structure, flexible rotation, and strong stability, which can ensure that the suspended crossbeam 42 can achieve smooth deflection under the drive of the control cylinder 44, avoid the deviation of the placement position of the calibration weight 30 due to jamming at the hinge, ensure the consistency of the landing point of the calibration weight 30 during each calibration, and solve the problem of unstable position of the calibration weight 30 when placed manually.

[0062] In fact, other components with hinge functions can also be used as needed for the hinged parts, such as a combination of a rotating shaft and a rotating sleeve, a combination of a ball joint and a ball joint rod, etc.

[0063] In this embodiment, a connecting seat 43 is installed on the suspended crossbeam 42 at the telescopic end position corresponding to the control cylinder 44. The connecting seat 43 is hinged to the telescopic end of the control cylinder 44. The design of the connecting seat 43 enables a rotational connection between the control cylinder 44 and the suspended crossbeam 42; it also allows for flexible adaptation to the hinge 41, ensuring the smoothness of the deflection action of the suspended crossbeam 42 and avoiding component wear caused by rigid connections.

[0064] In fact, the extension and retraction force of the cylinder 44 can be adjusted by the air pressure regulating valve to adapt to the needs of placing different weights of calibration weights 30, thus improving the versatility of the device.

[0065] In fact, the lifting drive component can also be selected as an electrically controlled telescopic control cylinder 44 as needed. Compared with hydraulic push rods, it has a faster response speed (telescopic stroke response time ≤ 0.5s), higher action accuracy, and no risk of hydraulic oil leakage, making it more suitable for the cleanliness requirements of tobacco production. The control cylinder 44 is equipped with a magnetic ring sensor, which can provide real-time feedback on the position of the telescopic end, facilitating precise control of the action stroke by the control module. The suspension crossbeam 42 has a connecting seat 43 welded to the position of the telescopic end of the control cylinder 44. The connecting seat 43 has a built-in fisheye bearing and is hinged to the telescopic end of the control cylinder 44 through a pin, realizing multi-angle adaptive rotation.

[0066] In practice, depending on the needs, the synchronous drive component in this embodiment can also be a transmission mechanism consisting of belts and pulleys.

[0067] In this embodiment, the weight handling mechanism 40 further includes a connecting plate 45 and two mounting plates 46. The two mounting plates 46 are mounted at both ends of the suspended crossbeam 42 via the connecting plate 45. One mounting plate 46 has a servo drive system mounting position on its top for mounting the servo drive system, and the other mounting plate 46 has a counterweight mounting position on its top, which can balance the weight at both ends of the suspended crossbeam 42 by adding counterweights. The connecting plate 45 and mounting plates 46 provide a stable mounting carrier for the annular track 51 and the synchronous drive assembly, ensuring the coaxiality and levelness of the annular track 51, preventing the slider 52 from jamming or shifting during movement, ensuring the accuracy of the synchronous movement of the calibration weights 30, and thus improving the consistency of calibration.

[0068] In practice, a weight roughly equal to that of the servo drive system can be installed at the counterweight mounting position as needed to improve the balance of the weight loading and unloading mechanism 40. The servo drive system is existing technology and generally includes a servo motor and a reducer, as well as a controller to control the start, stop, and speed adjustment of the servo motor.

[0069] In this embodiment, the annular track 51 is provided with a slider sliding track 511 and a synchronous chain limiting track 512, with the synchronous chain limiting track 512 located on the inner ring of the slider sliding track 511; several sliders 52 are slidably mounted on the slider sliding track 511. This dual-track design achieves separation and limiting of the slider 52 and the synchronous chain 56. The slider sliding track 511 provides a precise motion trajectory for the slider 52, ensuring that the slider 52 moves smoothly along the annular slider sliding track 511 and preventing the slider 52 from deviating, which would cause the calibration weight 30 to be placed at an incorrect position. The synchronous chain limiting track 512 limits and guides the synchronous chain 56, preventing it from deviating during operation, ensuring the linkage accuracy between the synchronous chain 56 and the slider 52, and ensuring that the movement speed of the slider 52 is completely synchronized with the speed of the belt scale 20, thus solving the problem that the calibration weight 30 cannot be synchronized with the belt during manual operation.

[0070] In this embodiment, a servo drive system is installed on a servo drive system mounting position. Each mounting plate 46 has a sprocket (drive wheel 54 and driven wheel 55) rotatably mounted on its base. A synchronous chain 56 is wound around the two sprockets. The servo drive system drives the sprockets and synchronous chain 56 to rotate. A connecting rod connects the slider 52 and the synchronous chain 56. The rotation of the synchronous chain 56 drives the slider 52 to rotate synchronously via the connecting rod. The aforementioned servo drive system has a high-precision speed regulation function, which can precisely adjust the output speed through the control module to ensure that the movement speed of the slider 52 driven by the synchronous chain 56 is perfectly matched with the operating speed of the belt scale 20. The error can be controlled within a very small range. Compared with the randomness of manually placing the calibration weights 30, this significantly improves the calibration accuracy and solves the problem of poor consistency. The transmission structure of the sprockets and synchronous chain 56 has the advantages of high transmission efficiency, strong stability, and precise transmission ratio, ensuring the smoothness and synchronization of the slider 52's movement and avoiding weighing errors of the calibration weights 30 caused by fluctuations in the slider 52's speed. The connecting rod enables the linkage between the slider 52 and the synchronous chain 56. The automated drive design of this component completely replaces the manual operation of pushing or adjusting the position of the calibration weight 30, further improving calibration efficiency.

[0071] In fact, the bearing housing has a built-in deep groove ball bearing, which reduces the rotational resistance of the shaft 57 and also has a dustproof sealing function; the synchronous chain 56 is a precision roller chain, and the chain link surface is carburized and quenched to improve wear resistance. The synchronous chain 56 is equipped with a tensioning device at the meshing point with the sprocket, which can periodically adjust the tension of the synchronous chain 56 to avoid transmission lag caused by chain loosening after long-term operation.

[0072] In this embodiment, the slider 52 is provided with a linkage part 521. One end of the connecting rod is rotatably sleeved on the linkage part 521, and the other end of the connecting rod is rotatably connected to the synchronous chain 56 corresponding to the position of the slider 52. The above-mentioned design of rotating connection at both ends of the connecting rod realizes universal linkage between the synchronous chain 56 and the slider 52, avoiding transmission jamming or uneven force caused by slight deviations between the movement trajectory of the synchronous chain 56 and the slider sliding track 511. This ensures that the slider 52 can smoothly follow the movement of the synchronous chain 56, guaranteeing speed synchronization accuracy, while reducing component wear and extending the service life of the equipment.

[0073] In fact, one end of the connecting rod is rotatably connected to the linkage part 521 through a joint bearing, and the other end is rotatably connected to the link of the synchronous chain 56 through a pin. The joint bearing can swing at multiple angles to eliminate the slight deviation between the motion trajectory of the synchronous chain 56 and the sliding track 511 of the slider, and avoid transmission jamming or uneven force.

[0074] In this embodiment, a storage cover 60 is also included. The storage cover 60 is mounted on the annular track 51 and installed on the side of the suspended crossbeam 42 near the hinge 41. The storage cover 60 forms a storage space 601 inside. The aforementioned storage cover 60 provides a protective space (i.e., storage space 601) for the calibration weights 30 when they are not in use, preventing the calibration weights 30 from being contaminated by dust or debris in the production environment during non-calibration periods, or from being damaged due to accidental collisions that could cause weight changes or loss of accuracy. This ensures the calibration accuracy of the calibration weights 30 and guarantees the accuracy of the calibration.

[0075] like Figure 5 As shown, in this embodiment, a smart calibration method for a belt scale is used in the aforementioned smart calibration device for a belt scale. The method includes:

[0076] S110: Obtain the calibration data of the belt scale 20 and adjust the control signal of the synchronous drive component according to the calibration data; the calibration data includes the operating speed of the belt scale 20 and the calibration parameters of the calibration weight 30;

[0077] S120: Controls the synchronous drive component to operate according to the control signal, and the synchronous drive component drives the slider 52 to move; wherein, the speed of the slider 52 is the same as the operating speed of the belt scale 20.

[0078] S130: Control the movement of the control cylinder 44, which drives the suspension crossbeam 42 and the ring track 51 to deflect, so that the calibration weight 30 hanging on the slider 52 falls into the weighing area of ​​the belt scale 20 and is disconnected from the slider 52.

[0079] S140: Obtain the weighing data of belt scale 20, compare it with the calibration table in the preset database, and output the calibration result of belt scale 20.

[0080] The process setup of this method ensures that the speed of the slider 52 after adjustment by the synchronous drive component is completely synchronized with the belt scale 20 by acquiring the real-time operating speed of the belt scale 20, avoiding weighing errors caused by speed mismatch and solving the problem of inaccurate synchronization during manual operation. Automated control achieves speed synchronization between the slider 52 and the belt scale 20, ensuring that the calibration weight 30 moves smoothly with the belt after being placed on the belt scale 20, with no relative displacement of the calibration weight 30 during the weighing process, avoiding weighing data deviations caused by shaking or offset. The control module precisely controls the timing and stroke of the control cylinder 44, ensuring that the calibration weight 30 always falls into the designated weighing area of ​​the belt scale 20, with strong consistency in the landing point, solving the problem of inconsistent placement of the calibration weight 30 during manual handling. Simultaneously, automated comparative analysis of weighing data eliminates the need for manual recording and calculation, further improving calibration efficiency and result accuracy, and achieving closed-loop control of the entire calibration process.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A smart calibration device for belt scales, characterized in that, include: A frame (10) on which a belt scale (20) is mounted. The weight handling mechanism (40) includes a suspended crossbeam (42), a hinge component, and a lifting drive component. The lifting drive component is mounted on the frame (10). The suspended crossbeam (42) is positioned above the belt scale (20) along the conveying direction of the belt scale (20). One side of the suspended crossbeam (42) is rotatably connected to the frame (10) via the hinge component. The other side of the suspended crossbeam (42) is located above the weighing area of ​​the belt scale (20). The telescopic end of the lifting drive component extends above the weighing area of ​​the belt scale (20) and is rotatably connected to the suspended crossbeam (42). The weight synchronization mechanism (50) includes a ring track (51), a synchronization drive assembly and several sliders (52). The ring track (51) is installed at the bottom of the suspension crossbar (42). Several sliders (52) are slidably installed on the ring track (51). The synchronization drive assembly is installed on the ring track (51) and is used to drive the movement of several sliders (52). The control module and several calibration weights (30) are respectively mounted on the bottom of the corresponding sliders (52); the control module is electrically connected to the lifting drive component and the synchronous drive component; When the belt scale (20) needs to be calibrated, the belt scale (20) operates without load. The control module controls the synchronous drive component to drive the slider (52) to move. The speed of the slider (52) is the same as the speed of the belt scale (20). At the same time, the lifting drive component is controlled to drive the suspended crossbeam (42) and the ring track (51) to deflect, so that the calibration weight (30) hanging on the slider (52) falls into the weighing area of ​​the belt scale (20) and is disconnected from the slider (52). When the synchronous drive component drives the slider (52) to leave the weighing area of ​​the belt scale (20), the calibration weight (30) is re-attached to the bottom of the corresponding slider (52).

2. The intelligent calibration device for belt scales according to claim 1, characterized in that, The frame (10) includes a support frame, a surrounding panel and a mounting plate (11). The belt scale (20) is mounted on the support frame, the surrounding panel is mounted on the support frame outside the belt scale (20), and the mounting plate (11) is mounted on the top of the surrounding panel.

3. The intelligent calibration device for belt scales according to claim 2, characterized in that, The hinge component includes a hinge (41) or a hinge, and the suspended crossbar (42) is mounted on the mounting plate (11) via the hinge (41) or hinge.

4. The intelligent calibration device for belt scales according to claim 1, characterized in that, The suspended crossbeam (42) is equipped with a connecting seat (43) at the telescopic end position of the lifting drive component, and the connecting seat (43) is hinged to the telescopic end of the lifting drive component.

5. The intelligent calibration device for belt scales according to claim 1, characterized in that, The weight handling mechanism (40) also includes a connecting plate (45) and two mounting plates (46). The two mounting plates (46) are mounted on both ends of the suspended crossbeam (42) via the connecting plate (45). One of the mounting plates (46) has a servo drive system mounting position on its top, and the other mounting plate (46) has a counterweight mounting position on its top.

6. The intelligent calibration device for belt scales according to claim 1, characterized in that, The annular track (51) is provided with a slider sliding track (511) and a synchronous chain limiting track (512). The synchronous chain limiting track (512) is located in the inner ring of the slider sliding track (511). A plurality of sliders (52) are slidably installed on the slider sliding track (511).

7. The intelligent calibration device for belt scales according to claim 5, characterized in that, The synchronous drive assembly includes a sprocket, a connecting rod, a synchronous chain (56), and a servo drive system. The servo drive system is installed on the servo drive system mounting position. A sprocket is rotatably mounted on the bottom of each mounting plate (46). The synchronous chain (56) is wound around two sprockets. The servo drive system is used to drive the sprocket and the synchronous chain (56) to rotate. The connecting rod is connected between the slider (52) and the synchronous chain (56). The rotation of the synchronous chain (56) drives the slider (52) to rotate synchronously through the connecting rod.

8. The intelligent calibration device for belt scales according to claim 7, characterized in that, The slider (52) is provided with a linkage part (521), one end of the connecting rod is rotatably sleeved on the linkage part (521), and the other end of the connecting rod is rotatably connected to the synchronous chain (56) corresponding to the position of the slider (52).

9. The intelligent calibration device for belt scales according to claim 1, characterized in that, It also includes a storage cover (60) which is mounted on the annular track (51) and installed on the side of the suspension crossbeam (42) near the hinge component.

10. A method for intelligent calibration of a belt scale, characterized in that, The method for the intelligent calibration device for belt scales as described in any one of claims 1-9 includes: Obtain the calibration data of the belt scale (20), and adjust the control signal of the synchronous drive component according to the calibration data; the calibration data includes the operating speed of the belt scale (20) and the calibration parameters of the weights; The synchronous drive component is controlled to operate according to the control signal, and the synchronous drive component drives the slider (52) to move; wherein, the speed of the slider (52) is the same as the speed of the belt scale (20); Control the lifting drive component to move, causing the suspended crossbar (42) and the ring track (51) to deflect, so that the calibration weight (30) hanging on the slider (52) falls into the weighing area of ​​the belt scale (20) and is disconnected from the slider (52); Obtain the weighing data of the belt scale (20), compare it with the calibration table in the preset database, and output the calibration result of the belt scale (20).

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