A full-automatic total migration amount testing system and testing method

Abstract

This invention discloses a fully automated total migration testing system and method. The system includes a tray, an experimental module, an AGV transfer unit, and an integrated control and processing device. The tray carries evaporating dishes and is equipped with a connection part and identification mark. The experimental module includes an oven, a settling cabinet, and an automatic weighing unit, completing drying, cooling, weighing, and image acquisition. The AGV transfer unit accurately positions and picks up the tray, realizing automatic transfer between the oven, settling cabinet, and automatic weighing unit. It is equipped with a barcode scanning mechanism, a hook part, and a pushing part. A transfer rack temporarily stores the tray. The integrated control and processing device presets parameters, performs full-process interactive control, collects and verifies data, and generates a report. The method completes the test through parameter preset, incoming material docking, constant weight of clean dishes, constant weight of samples, and generation of data verification reports. This invention achieves automated testing, solving the problems of low efficiency, large errors, and high risk of contamination associated with manual testing. It offers high accuracy and strong stability, and is suitable for batch testing needs in laboratories.

Description

Technical Field

[0001] This invention relates to the field of automatic detection technology, and in particular to a fully automatic total migration test system and test method. Background Technology

[0002] During contact with food, harmful substances may migrate from food contact materials into the food, endangering human health. Total migration is a core indicator for evaluating the safety of food contact materials, and its testing must strictly follow national standards (such as the GB31604 series). The testing is mainly completed through multiple processes, including evaporating a simulated liquid in an evaporating dish, water bath, drying, cooling, weighing, and residue analysis.

[0003] Current total migration tests rely heavily on manual operation. Pallet handling, equipment door opening and closing, evaporating dish placement and removal, and weighing and recording all require manual completion. This results in long testing cycles for single batches, making it difficult to meet the needs of batch sample testing. Furthermore, manual handling of evaporating dishes can easily lead to positional deviations, visual errors in weighing readings, and data recording errors, resulting in poor repeatability and low reliability of test results. In addition, direct contact between personnel and evaporating dishes and simulated liquids can easily contaminate samples with grease and impurities from their hands, affecting the accuracy of the tests. Finally, equipment such as ovens, settling cabinets, and electronic balances operate independently without unified scheduling, and process connections rely on manual intervention, making it impossible to form a closed-loop automated process.

[0004] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a fully automated total migration test system and test method to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of the present invention and for the convenience of those skilled in the art to understand it. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background of the present invention. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention aims to disclose a fully automated total migration test system and test method.

[0007] This invention discloses a fully automated total migration testing system, comprising: a tray, an experimental module, an AGV transfer unit, and an integrated control and processing device;

[0008] The tray is used to hold the evaporating dish and is compatible with the water bath. The tray has connecting parts and identification marks.

[0009] The experimental module includes an oven, a settling chamber, and an automatic weighing unit; the oven is used to hold the tray and dry the evaporating dishes on it; the settling chamber is used to hold the tray and cool the evaporating dishes on it; the automatic weighing unit includes an electronic balance and a high-definition camera, used to weigh the tray and the evaporating dishes on it and to capture images.

[0010] The AGV transfer unit uses continuous guidance via a barcode tape and QR code landmarks to precisely calibrate its position and posture, enabling pallet positioning and pickup as well as pallet transfer between ovens, static cabinets, and automatic weighing units. The output end of the AGV transfer unit is equipped with a barcode scanning mechanism, a hooking part, and a pushing part. The barcode scanning mechanism is used to read and identify the marking information, the hooking part is used to pull the pallet in conjunction with the connecting part, and the pushing part is used to push the pallet against the contact point.

[0011] The integrated control and processing device is used to input sample information according to the identification mark, issue process parameters to the experimental module and AGV transfer unit, collect and verify experimental data, and perform interactive control with the experimental module and AGV transfer unit.

[0012] Preferred technical solution: Both the drying oven and the settling cabinet are equipped with automatic door opening and closing and programmable temperature control modules.

[0013] Preferred technical solution: The connecting part of the pallet includes a mounting plate and an extension plate. The mounting plate is fixed on the pallet and has a through groove. The extension plate extends horizontally from one side of the through groove. The hook part includes a first abutting plate and a second abutting plate, which are connected at an angle. The end face of the first abutting plate is used to mate with the end face of the extension plate to form a pulling structure for the pallet. The end face of the second abutting plate is used to abut with the side of the extension plate to form a stable connecting surface.

[0014] Preferred technical solution: The included angle between the first abutment plate and the second abutment plate is 85° to 95°.

[0015] Preferred technical solution: The automatic weighing unit also includes a receiving mechanism and a conveying mechanism; the receiving mechanism is used to receive the tray and position the tray; the conveying mechanism is used to remove the evaporating dish from the positioned tray and send it to the electronic balance, or to remove the evaporating dish from the electronic balance and send it to the positioned tray.

[0016] Preferred technical solution: The AGV transfer unit includes a mobile chassis, on which a transfer bin, a transfer rack, and a drive assembly are provided; the transfer rack is used to temporarily store pallets; the drive assembly includes a longitudinal drive assembly, a rotary drive assembly, and a sliding drive assembly; the longitudinal drive assembly is used to drive the transfer bin to lift and lower, the rotary drive assembly is used to drive the transfer bin to rotate horizontally, and the sliding drive assembly is installed on the transfer bin and is connected to the hook and push parts for transmission.

[0017] Preferred technical solution: The transfer rack is equipped with multiple back compartments for temporary pallet storage along the vertical direction.

[0018] A fully automated total migration testing method, applied to the aforementioned fully automated total migration testing system, includes the following steps:

[0019] S1. Parameter preset: Sample information is pre-entered and experimental process parameters are set through the integrated control and processing device;

[0020] S2, Material Handling: Place the cleaned evaporating dish on the tray and move it to the designated material handling position;

[0021] S3. Constant weight treatment of clean dishes: The integrated control and processing device interacts with the experimental module and AGV transfer unit to collect parameters and issue instructions in real time; the AGV transfer unit grabs the tray and reads the identification mark, and transfers it to the drying oven, the settling cabinet, the automatic weighing unit to weigh and take pictures in sequence. The drying, settling and weighing steps are repeated until the difference in the weighing value reaches within the preset value, and a constant weight evaporating dish is obtained.

[0022] S4. Constant weight treatment of samples: Add simulated liquid to the constant weight evaporating dish, and after water bath treatment, transfer it to the designated material collection position; The integrated control and processing device interacts with the experimental module and AGV transfer unit, collects parameters in real time and issues instructions; The AGV transfer unit transfers the tray sequentially to the drying oven, the settling cabinet, the automatic weighing unit to weigh and take images of the residue, and repeats the drying, settling, and weighing steps until the difference in the weighing value reaches within the preset value.

[0023] S5. Data Verification and Report Generation: After the experiment is completed, the integrated control and processing device collects all experimental data and verifies it. If the data is qualified, a standard test report is generated, and abnormal data is returned for verification.

[0024] Preferred technical solution: Weighing data and acquired images are uploaded and synchronized in real time, and the integrated control and processing device automatically calculates the total migration value and generates the original experimental record.

[0025] Due to the application of the above technical solution, the beneficial effects of this invention compared with the prior art are as follows:

[0026] This invention achieves tray positioning and pickup, as well as automated transfer of multiple devices, through an AGV transfer unit. The experimental module completes drying, cooling, weighing, and image acquisition. The integrated control and processing device provides full interactive scheduling without manual intervention, shortening the testing cycle and meeting the needs of batch sample testing. It employs precise AGV positioning, accurate handling of evaporating dishes by the transport mechanism, and high-precision weighing by the electronic balance, avoiding human error. Humans do not directly contact the evaporating dishes and simulated liquid, preventing contamination by grease and impurities, resulting in good repeatability and high accuracy of test results. Furthermore, the integrated control and processing device uniformly schedules the experimental module and AGV transfer unit, automating the entire process from parameter presetting and process interaction to data verification and report generation. Equipment operates collaboratively with seamless process connections. Finally, the dedicated tray connection is adapted to the AGV hook structure, and the AGV uses a mobile chassis with a multi-back compartment transfer rack, adapting to the narrow spaces and high-precision positioning requirements of laboratories, making the equipment highly practical. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a flowchart of a fully automated total migration test method according to the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a fully automated total migration testing system according to the present invention;

[0030] Figure 3 This is a schematic diagram of the automatic weighing unit in this invention;

[0031] Figure 4 This is a schematic diagram of the AGV transfer unit in this invention;

[0032] Figure 5 for Figure 4 A magnified view of a portion of point I.

[0033] In the above attached diagrams, 1. Tray; 11. Connecting part; 111. Mounting plate; 112. Extension plate; 2. Experimental module; 21. Oven; 22. Static cabinet; 23. Automatic weighing unit; 231. Electronic balance; 232. High-definition camera; 233. Receiving mechanism; 234. Handling mechanism; 3. AGV transfer unit; 31. Chassis; 32. Transfer bin; 33. Transfer rack; 34. Drive assembly; 35. Hooking part; 36. Pushing part; 37. Scanning mechanism; 4. Evaporating dish. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0038] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example:

[0041] like Figure 2 As shown, this invention discloses a fully automated total migration testing system, including a tray 1, an experimental module 2, an AGV transfer unit 3, and an integrated control and processing device. The main components of the invention will be described in detail below:

[0042] like Figure 2 , Figure 4 and Figure 5 As shown, tray 1 is used to support evaporating dish 4 and is adapted to a water bath. Tray 1 is provided with a connecting part 11 and an identification mark (not shown in the figure). The connecting part 11 includes a mounting plate 111 and an extension plate 112. The mounting plate 111 is fixed on tray 1 and has a through groove. The extension plate 112 extends horizontally from one side of the through groove. The identification mark is a QR code or electronic tag, used by AGV to scan and identify sample information.

[0043] like Figure 2 and Figure 3 As shown, experimental module 2 includes an oven 21, a settling chamber 22, and an automatic weighing unit 23. The oven 21 is equipped with an automatic door opening and closing mechanism and a programmable temperature control module for drying the evaporating dishes on tray 1. The settling chamber 22 is also equipped with an automatic door opening and closing mechanism and a programmable temperature control module for cooling the dried evaporating dishes. The automatic weighing unit 23 includes an electronic balance 231, a high-definition camera 232, a receiving mechanism 233, and a conveying mechanism 234. The receiving mechanism 233 receives and positions tray 1. The conveying mechanism 234 uses an electric slide table with gripper components to remove the evaporating dishes from tray 1, place them on the electronic balance 231 for weighing, and then return them to tray 1. The high-definition camera 232 is used to capture images of the residue on the evaporating dishes.

[0044] like Figure 2 , Figure 4 and Figure 5As shown, the AGV transfer unit 3 includes a mobile chassis 31, a transfer bin 32, a transfer rack 33, and a drive assembly 34. The mobile chassis 31 uses continuous guidance via a code strip and QR code landmarks for precise orientation calibration, achieving a positioning accuracy of ±1mm. The transfer bin 32 is connected to the drive assembly 34 and is equipped with a hooking part 35, a pushing part 36, and a barcode scanning mechanism 37. The transfer rack 33 has six back compartments along the vertical direction for temporarily storing pallets 1, enabling multi-pallet buffering and continuous transfer. The drive assembly 34 includes a longitudinal drive assembly, a rotary drive assembly, and a sliding drive assembly. The longitudinal drive assembly drives the transfer bin 32 to rise and fall, the rotary drive assembly drives the transfer bin 32 to rotate horizontally, and the sliding drive assembly is mounted on the transfer bin 32 and is connected to the hooking part 35 and the pushing part 36. The barcode scanning mechanism 37 is used to read and identify the markings. The hook part 35 includes a first abutting plate 351 and a second abutting plate 352 with an included angle of 90°; the end face of the first abutting plate 351 abuts with the end face of the extension plate 112 to form a pulling structure; the end face of the second abutting plate 352 abuts with the side of the extension plate 112 to form a stable connection surface; the pushing part 36 is used to abut and push the tray 1.

[0045] like Figure 2 As shown, the integrated control and processing device (not shown in the figure) is connected to the experimental module 2 and the AGV transfer unit 3 for inputting sample information, setting process parameters, issuing control commands, collecting operating parameters in real time, verifying experimental data, generating and outputting standard test reports, and realizing interactive control of the entire process.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this invention also discloses a fully automated method for testing total migration. Combined with the above system, the testing method steps are as follows:

[0047] S1. Parameter preset: The operator enters information such as sample name, material, and batch through the integrated control and processing device, and sets process parameters such as drying temperature, drying time, cooling time, weighing accuracy threshold, and image capture parameters.

[0048] S2, Material docking: Place the cleaned evaporating dish on tray 1 and move it to the material picking position of AGV transfer unit 3;

[0049] S3. Cleaning and Constant Weight Processing: The integrated control and processing device interacts in real time with the experimental module 2 and the AGV transfer unit 3, collecting equipment operating parameters and issuing instructions. The AGV transfer unit 3 moves to the material picking position, the barcode scanning mechanism 37 reads the identification mark of the tray 1, and the hook part 35 cooperates with the connecting part 11 of the tray 1 to position and pick up the tray 1. The tray 1 is then transferred to the drying oven 21 for drying for one hour, the settling cabinet 22 for resting for half an hour, and the automatic weighing unit 23 for weighing and taking pictures. Specifically, when the AGV transfer unit 3 moves to the drying oven 21 and the settling cabinet 22, the doors of the drying oven 21 and the settling cabinet 22 automatically open and close, cooperating with the AGV transfer unit 3 to automatically pick up and put down the tray 1. The drying, settling, and weighing steps are repeated until the difference between the two weights of each evaporating dish does not exceed 0.3 mg, which is considered as passing the constant weight test and completing the cleaning and constant weight process.

[0050] S4. Sample Constant Weight Treatment: Add 200mL of experimental simulation solution and blank simulation solution to the constant-weight evaporating dish. Evaporate the simulation solution in a water bath until it is almost dry. Remove the tray with the evaporating dish and transfer it to the material picking position of AGV transfer unit 3. Note that this step can be completed manually or by commonly used automated equipment such as robotic arms. The specific structure will not be described in detail in this embodiment. The integrated control and processing device maintains interactive control throughout the process. AGV transfer unit 3 picks up the tray 1 after the water bath and transfers it sequentially to the drying oven 21 for drying for one hour, the settling cabinet 22 for resting for half an hour, and the automatic weighing unit 23 for weighing and taking images of the residue. The process is repeated until the difference between the two weights of each evaporating dish does not exceed 0.3mg, which is considered as passing the constant weight test and completing the constant weight test of the sample.

[0051] S5. Data Verification and Report Generation: After the experiment is completed, the integrated control and processing device collects all weighing data, image data, and equipment operating parameters, and automatically verifies the validity of the data; if the data is qualified, a standard test report is generated and the total migration value is calculated; if the data is abnormal, it is marked and a review is prompted.

[0052] Weighing data and images are uploaded to the integrated control and processing device in real time, automatically calculating the total migration value and generating the original experimental record, which is convenient for traceability and verification.

[0053] Using this system for total migration testing, the daily processing capacity can reach 400 evaporating dishes, significantly saving labor costs, improving work efficiency, and greatly enhancing data accuracy.

[0054] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automated total migration measurement system, characterized in that, include: Pallets, experimental modules, AGV transfer units, and integrated control and processing devices; The tray is used to hold the evaporating dish and is adapted to the water bath. The tray has a connection part and identification marks. The experimental module includes an oven, a settling cabinet, and an automatic weighing unit; the oven is used to hold the tray and dry the evaporating dishes on it; the settling cabinet is used to hold the tray and cool the evaporating dishes on it; the automatic weighing unit includes an electronic balance and a high-definition camera, used to weigh the tray and the evaporating dishes on it and to capture images. The AGV transfer unit uses continuous barcode guidance and QR code landmarks to finely calibrate its position and posture, enabling pallet positioning and pickup, as well as pallet transfer between ovens, static cabinets, and automatic weighing units. The output end of the AGV transfer unit is equipped with a barcode scanning mechanism, a hooking part, and a pushing part. The barcode scanning mechanism is used to read and identify identification information, the hooking part is used to pull the pallet in cooperation with the connecting part, and the pushing part is used to push the pallet. The integrated control and processing device is used to input sample information according to the identification mark, issue process parameters to the experimental module and AGV transfer unit, collect and verify experimental data, and perform interactive control with the experimental module and AGV transfer unit.

2. The fully automatic total migration test system according to claim 1, characterized in that: Both the oven and the settling cabinet are equipped with automatic door opening and closing and a programmable temperature control module.

3. The fully automatic total migration test system according to claim 1, characterized in that: The connecting part of the pallet includes a mounting plate and an extension plate. The mounting plate is fixed on the pallet and has a through groove. The extension plate extends horizontally from one side of the through groove. The hook part includes a first abutment plate and a second abutment plate, which are connected at an angle. The end face of the first abutment plate is used to mate with the end face of the extension plate to form a pulling structure for the pallet. The end face of the second abutment plate is used to abut with the side of the extension plate to form a stable connecting surface.

4. The fully automatic total migration test system according to claim 3, characterized in that: The included angle between the first abutment plate and the second abutment plate is 85° to 95°.

5. The fully automatic total migration test system according to claim 1, characterized in that: The automatic weighing unit further includes a receiving mechanism and a conveying mechanism; the receiving mechanism is used to receive the tray and position the tray; the conveying mechanism is used to remove the evaporating dish from the positioned tray and send it to the electronic balance, or to remove the evaporating dish from the electronic balance and send it to the tray in the positioned state.

6. The fully automatic total migration test system according to claim 1, characterized in that: The AGV transfer unit includes a mobile chassis, on which a transfer bin, a transfer rack, and a drive assembly are mounted. The transfer rack is used to temporarily store pallets. The drive assembly includes a longitudinal drive assembly, a rotary drive assembly, and a sliding drive assembly. The longitudinal drive assembly is used to drive the transfer bin to lift and lower, the rotary drive assembly is used to drive the transfer bin to rotate horizontally, and the sliding drive assembly is mounted on the transfer bin and is connected to the hook and push parts for transmission.

7. The fully automated total migration test system of claim 6, wherein: The transfer rack is equipped with multiple back compartments for temporary pallet storage along the vertical direction.

8. A fully automatic total migration test method applied to the fully automatic total migration test system of any one of claims 1 to 7, characterized in that, Includes the following steps: S1. Parameter preset: Sample information is pre-entered and experimental process parameters are set through the integrated control and processing device; S2, Material Handling: Place the cleaned evaporating dish on the tray and move it to the designated material handling position; S3. Constant weight treatment of clean dishes: The integrated control and processing device interacts with the experimental module and AGV transfer unit to collect parameters and issue instructions in real time; the AGV transfer unit grabs the tray and reads the identification mark, and transfers it to the drying oven, the settling cabinet, the automatic weighing unit to weigh and take pictures in sequence. The drying, settling and weighing steps are repeated until the difference in the weighing value reaches within the preset value, and the constant weight evaporating dish is obtained. S4. Constant weight treatment of samples: Add simulated liquid to the constant weight evaporating dish, and after water bath treatment, transfer it to the designated material collection position; The integrated control and processing device interacts with the experimental module and AGV transfer unit, collects parameters in real time and issues instructions; The AGV transfer unit transfers the tray sequentially to the drying oven, the settling cabinet, the automatic weighing unit to weigh and take images of the residue, and repeats the drying, settling, and weighing steps until the difference in the weighing value reaches within the preset value. S5. Data Verification and Report Generation: After the experiment is completed, the integrated control and processing device collects all experimental data and verifies it. If the data is qualified, a standard test report is generated, and abnormal data is returned for verification.

9. The fully automatic total migration test method according to claim 8, characterized in that: Weighing data and acquired images are uploaded and synchronized in real time. The integrated control and processing device automatically calculates the total migration value and generates the original experimental record.

Images