Visual defect detection device for intelligent indication type packaging bag

Abstract

The invention provides an intelligent indication type visual defect detection device for a packaging bag. The intelligent indication type visual defect detection device comprises a belt conveying component, a bearing platform, a tension maintaining assembly, a loading tool and an alignment piece. The bearing platform is matched with the conveying surface of the to-be-conveyed component through a pre-positioning structure; the bearing platform is provided with a rotary table connected with the rotation driving component, and the tension maintaining assembly is arranged on the rotary table to maintain the posture that the opening of the packaging bag faces upwards. The loading tool is arranged on the upper side of the conveying surface and is connected with a lifting driving component; the loading tool is provided with a containing cavity, and a temperature adjusting component and an indicator are arranged in the containing cavity. A visual information acquisition component is arranged on the alignment part, and is matched with the lifting driving component through a linkage structure, so that when the loading tool moves downwards to the packaging bag, the visual information acquisition component completes alignment. According to the visual defect detection device provided by the invention, the loading tool is arranged in the packaging bag, so that the appearance change of the packaging bag under special conditions can be simulated, and the accuracy and reliability of the intelligent indication function of the packaging bag can be evaluated.

Description

Technical Field

[0001] This application belongs to the field of new material testing technology, specifically relating to a visual defect detection device for intelligent indicator-type packaging bags. Background Technology

[0002] Intelligent indicator packaging bags are packaging containers made from novel functional materials. By integrating sensing and indicator systems into the new materials of the bag body (such as bio-based polymers, composite nanomaterials, or functional inks), they can actively change surface color or other visual signals according to changes in the internal environment (such as temperature, specific gas concentrations, or the content of microbial metabolites), thereby dynamically and intuitively reflecting the status of the product inside the bag and realizing the transformation of packaging from passive wrapping to active information interaction.

[0003] Since the "smart indication" function of this type of packaging bag relies entirely on the appearance response of the aforementioned new material coating, any manufacturing defects (such as uneven coating, indicator deactivation, or sealing flaws) will directly lead to damage or failure of this core function. Therefore, rigorous visual defect inspection of this new material must be carried out at the production end to ensure that every packaging bag can reliably perform its information transmission function.

[0004] However, current technology lacks dedicated visual defect detection devices for smart indicator packaging bags. In the production process, visual inspection equipment designed for traditional packaging bags or similar ordinary products is often used as a substitute.

[0005] The inventors discovered that conventional inspection devices are typically designed for visual inspection of products in a single, static state. However, due to the unique nature of smart indicator packaging bags—their appearance dynamically changes with usage (such as changes in the internal environment)—conventional devices cannot comprehensively inspect the bag's appearance under these specific conditions. Inspecting only the bag in a single state fails to accurately reflect the changes in appearance during the actual implementation of smart indication. This significantly reduces the reliability of visual inspection results, hindering the effective realization of the smart indication function. Summary of the Invention

[0006] This application provides a visual defect detection device for intelligent indicator packaging bags. It aims to simulate changes in the internal environment of the packaging bag, stimulate its intelligent response, and perform dynamic visual detection and comparison of the appearance under multiple states to evaluate the accuracy and reliability of its intelligent indicator function, thereby solving the problem that traditional static detection methods cannot effectively guarantee the core functions of such packaging.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0008] A visual defect detection device for intelligent indicative packaging bags is provided, including a belt conveyor member for providing driving force for movement in the back-and-forth direction, and further comprising:

[0009] A support platform is disposed on the conveying surface with the conveying component and has a pre-positioning structure between it and the conveying surface; a turntable is provided on the upper side of the support platform, and the turntable is connected to a rotation drive component.

[0010] A tension maintaining component is provided on the turntable for contacting a packaging bag placed on the turntable, such that the bottom surface of the packaging bag is in contact with the upper side of the turntable and is open upwards;

[0011] A loading fixture, disposed above the conveying surface, has a degree of freedom to move vertically relative to the conveying surface and is connected to a lifting drive component; the loading fixture has a receiving cavity, in which a temperature regulating component is disposed, and the receiving cavity is also used to hold an indicator simulating a specific gas concentration or the content of microbial metabolites; and

[0012] An alignment component is disposed on the outside of the loading fixture, and a visual information acquisition component is disposed on the alignment component;

[0013] The alignment member has a degree of freedom to move so that the visual information acquisition component is oriented toward the packaging bag, and also has a degree of freedom to move to avoid the movement trajectory of the packaging bag;

[0014] Furthermore, the alignment component is connected to the lifting drive component via a linkage structure, so that when the loading fixture moves downward to contact the inner bottom surface of the packaging bag, the visual information acquisition component faces the outer peripheral surface of the packaging bag.

[0015] In one possible implementation, the visual defect detection device further includes:

[0016] A gantry frame is used to be fixedly installed on the outside of the conveyor belt, and it includes a crossbeam plate above the conveyor surface;

[0017] The loading fixture is disposed between the crossbeam plate and the conveying surface, and the lifting drive component includes:

[0018] A take-up roller is rotatably mounted on the crossbeam plate in a left-right direction and is driven by a first rotary motor for rotating it; and

[0019] Two traction belts are arranged side by side on both sides of the loading fixture in the left-right direction, and both ends of each traction belt are connected to the take-up roller and the loading fixture, respectively.

[0020] When the first rotating motor drives the take-up roller to rotate, the traction belt can be wound around the outer periphery of the take-up roller to provide an upward pulling force to the loading fixture; or, the traction belt can be unwound from the outer periphery of the take-up roller to move the loading fixture downward.

[0021] In one possible implementation, the crossbeam plate has a feeding port that extends vertically; the loading fixture is coaxially arranged with the feeding port, and the traction belt can drive the loading fixture to move into the feeding port and align the upper end face of the loading fixture with the upper side face of the crossbeam plate.

[0022] The take-up roller is positioned on one side of the feed inlet facing the front-to-back direction, thus avoiding the feed inlet; and each traction belt further includes:

[0023] A deflector wheel is rotatably mounted on the upper side of the crossbeam plate, positioned between the take-up roller and the feed inlet, and the outer circumferential surface of the deflector wheel is in contact with the traction belt.

[0024] In one possible implementation, the portal frame further includes two side wing plates respectively connected to the left and right sides of the crossbeam plate; the alignment member includes:

[0025] Two swing arms are hinged to the inner surfaces of the two side wing plates in the left-right direction, and one of the swing arms is connected to the take-up roller via the linkage structure; and

[0026] A positioning shell is disposed between the two swing arms, and its left and right sides are respectively hinged to the two swing arms; the visual information acquisition component is fixedly disposed on the outer side of the positioning shell, and the positioning shell has a pendant counterweight component to keep the visual information acquisition component facing the front or rear side when the swing arms swing.

[0027] In one possible implementation, each of the swing arms has a connecting shaft hinged to the corresponding side wing plate, and the linkage structure includes:

[0028] A linkage shaft is rotatably disposed above the crossbeam plate and coaxially connected to the take-up roller; and

[0029] A timing belt is wrapped around the outer periphery of the linkage shaft and the connecting shaft to synchronize the rotation of the linkage shaft and the connecting shaft;

[0030] The connecting shaft has an enlarged diameter portion that mates with the synchronous belt. The enlarged diameter portion extends radially outward along the connecting shaft, and the outer diameter of the enlarged diameter portion is larger than the outer diameter of the linkage shaft.

[0031] In one possible implementation, the inner wall of the receiving cavity has a boss, the upper side of which is used to support the indicator;

[0032] A lower chamber is formed between the boss and the bottom surface of the receiving cavity. The temperature regulating component is a thermoelectric temperature control plate fixedly installed in the lower chamber. Furthermore, a plurality of vent holes communicating with the lower chamber are provided on the outer peripheral surface of the loading fixture.

[0033] In one possible implementation, the tension maintaining component includes:

[0034] A translational plate is slidably disposed on the upper side of the turntable and connected to the turntable via an elastic member, so that the translational member has an elastic degree of freedom to move away from the packaging bag placement area; and

[0035] The lifting rod is slidably mounted on the translation plate in the vertical direction, and one end of it has a downwardly extending bent portion, which is used to insert into the packaging bag and abut against the inner bottom surface of the packaging bag;

[0036] The lifting rod has a cantilever at one end away from the bend, which is rotatably connected to the cantilever in the vertical direction; the cantilever is used to rotate to abut against the upper surface of the translation plate to limit the downward movement of the lifting rod relative to the translation plate.

[0037] In one possible implementation, the upper side of the turntable is provided with a guide groove, and the translation plate has a slider that is slidably embedded in the guide groove.

[0038] The elastic element is a spring embedded in the guide groove; the axial direction of the spring is parallel to the length direction of the guide groove, and the spring is located on the side of the translation plate facing the packaging bag placement area.

[0039] In one possible implementation, a reserved slot is provided on the upper side of the support platform, and the rotation drive component is a second rotation motor fixedly installed in the reserved slot;

[0040] The turntable has a shaped groove on its lower side, which is coaxially arranged with the power output shaft of the second rotating motor, and the power output end of the second rotating motor has a shaped block suitable for being embedded in the shaped groove.

[0041] The upper side of the support platform also has an annular groove surrounding the reserved slot, a connecting ring is embedded in the annular groove, and the connecting ring has multiple connecting screws extending upward.

[0042] The turntable is provided with multiple through holes suitable for the multiple connecting screws to pass through one by one, and each of the connecting screws has a connecting nut threadedly connected to its protruding end.

[0043] The upper side of the turntable is provided with a recessed groove, and the through hole is opened at the bottom of the recessed groove so that each of the connecting screws and the connecting nuts is located in the recessed groove;

[0044] A filling plate is embedded in the sinking trough, and the upper side of the filling plate is aligned with the upper side of the turntable to jointly support the packaging bag.

[0045] In one possible implementation, the pre-positioning structure includes:

[0046] Multiple protrusions are disposed on the conveying surface and arranged at intervals along the length of the conveying surface; and

[0047] A groove is formed on the bottom surface of the support platform for the protrusion to be inserted.

[0048] In this embodiment, the support platform is fixed to the conveying surface with the conveying component via a pre-positioning structure, and the turntable on it can drive the packaging bag to rotate; simultaneously, the tension maintaining component can keep the packaging bag in a stable posture with its opening facing upwards. Based on this, the lifting drive component can drive the loading fixture downwards to enter the packaging bag, thereby simulating the internal environmental changes that the packaging bag may encounter in actual use, such as temperature, specific gas concentrations, or microbial metabolite content, through the temperature regulating component and pre-installed indicators, thereby stimulating the packaging bag to produce corresponding intelligent indication changes on its appearance.

[0049] While the loading fixture is being loaded into the packaging bag, the alignment component moves synchronously with the lifting drive component through a linkage structure, so that the visual information acquisition component automatically aligns with the outer circumference of the packaging bag, thereby meeting the shooting angle required for the packaging bag to rotate and completing the acquisition of the outer circumference appearance image of the packaging bag under different internal environments.

[0050] The aforementioned structure achieves dynamic detection of the intelligent indicator function by simulating the actual usage environment and simultaneously collecting changes in appearance. Its principle lies in placing a loading device that simulates changes in the internal environment inside the packaging bag, causing the bag's appearance to change according to the design intent. Simultaneously, a linkage structure ensures that the vision acquisition component automatically aligns when the loading device is in place, enabling timely, stable, and accurate acquisition of the bag's appearance images when it is in different simulated states (such as different temperatures and gas concentrations). Furthermore, the rotation function of the turntable allows the vision acquisition component to obtain images of the packaging bag from multiple angles, achieving comprehensive detection.

[0051] The visual defect detection device for intelligent indicator packaging bags provided in this embodiment, compared with the prior art, can simulate the changes in the internal environment of such packaging bags during use by loading tooling, and automatically collect visual data on the appearance of the changed packaging bags, thereby realizing the functional reliability detection of intelligent indicator packaging bags under dynamic changing conditions. It overcomes the limitation of conventional detection devices that can only detect a single static appearance, and can more realistically reflect the intelligent indicator performance of the packaging bags in actual use, significantly improving the reliability and accuracy of the detection results. At the same time, the device has a high degree of automation, and can complete multi-state, all-angle detection in a single clamping, improving detection efficiency and providing a dedicated and effective detection method for the quality control of intelligent indicator packaging bags. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a three-dimensional structural diagram of the visual defect detection device provided in the embodiments of this application;

[0054] Figure 2 for Figure 1 A magnified view of a portion of the middle circle A;

[0055] Figure 3 This is one of the three-dimensional structural diagrams of the support platform, turntable, and tension maintaining assembly used in the embodiments of this application in a combined state;

[0056] Figure 4 for Figure 3 A magnified view of a portion of the middle circle at point B;

[0057] Figure 5 This is a second three-dimensional structural diagram of the support platform, turntable, and tension maintaining assembly used in the embodiments of this application in a combined state;

[0058] Figure 6 for Figure 5 A magnified view of a portion of the middle circle C;

[0059] Figure 7 This is one of the enlarged schematic diagrams of the translation plate and turntable used in the embodiments of this application from a cross-sectional perspective;

[0060] Figure 8 This is a partially enlarged schematic diagram of the translational plate and turntable used in the embodiments of this application in a combined state;

[0061] Figure 9 This is a second enlarged schematic diagram of the translation plate and turntable used in the embodiments of this application from a cross-sectional perspective;

[0062] Figure 10 This is a cross-sectional structural diagram of the support platform and turntable used in the embodiments of this application in a combined state;

[0063] Figure 11 This is an exploded structural diagram of the support platform, rotation drive component, and connecting ring used in the embodiments of this application;

[0064] Figure 12 This is an exploded structural diagram of the turntable and filler plate used in the embodiments of this application;

[0065] Figure 13 This is a bottom view of the turntable used in the embodiments of this application;

[0066] Figure 14 This is an exploded view of the prepositioning structure used in the embodiments of this application from a cross-sectional perspective;

[0067] Figure 15 This is a three-dimensional structural diagram of the gantry frame, loading fixture, and alignment component used in the embodiments of this application in an assembled state;

[0068] Figure 16 This is an exploded structural diagram of the alignment shell and visual information acquisition component used in the embodiments of this application;

[0069] Figure 17 This is a cross-sectional view of the two swing arms and two side wing plates used in the embodiments of this application in the combined state;

[0070] Figure 18 This is a cross-sectional view of the portal frame used in the embodiments of this application;

[0071] Figure 19 This is a schematic diagram of the combined structure of the swing arm and linkage structure used in the embodiments of this application;

[0072] Figure 20 This is a three-dimensional structural diagram of the lifting drive component used in the embodiments of this application;

[0073] Figure 21 This is a three-dimensional structural diagram of the loading fixture used in the embodiments of this application;

[0074] Figure 22 This is a cross-sectional view of the loading fixture used in the embodiments of this application;

[0075] Explanation of reference numerals in the attached figures:

[0076] 1. Foundation; 11. Rotation drive component; 111. Irregular block; 12. Reserved groove; 13. Annular groove; 14. Connecting ring; 141. Connecting screw; 142. Connecting nut; 2. Tension maintaining assembly; 21. Translation plate; 211. Slider; 22. Lifting rod; 221. Bending part; 222. Cantilever; 3. Loading fixture; 31. Receiving cavity; 32. Temperature regulating component; 33. Boss; 34. Vent hole; 4. Alignment component; 41. Swing arm; 411. Connecting shaft; 412. Expanded diameter part; 42. Alignment shell; 421. Pendant counterweight Components; 5. Pre-positioning structure; 51. Protrusion; 52. Groove; 6. Turntable; 61. Guide groove; 62. Elastic component; 63. Irregular groove; 64. Through hole; 65. Sinking groove; 66. Filling plate; 7. Lifting drive component; 71. Take-up roller; 711. First rotating motor; 72. Traction belt; 8. Linkage structure; 81. Linkage shaft; 82. Synchronous belt; 9. Gantry frame; 91. Crossbeam plate; 911. Feed port; 912. Directional wheel; 92. Side wing plate; 10. Visual information acquisition component; 100. Conveying surface; 200. Indicator. Detailed Implementation

[0077] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0078] The directions or similar terms used throughout this invention, such as "front," "back," "left," "right," "top," "bottom," "inner," "outer," and "side," are mainly for reference to the directions in the accompanying drawings. These directions or similar terms are only used to assist in explaining and understanding the embodiments of this invention and are not intended to limit this invention.

[0079] Please refer to the following: Figures 1 to 22 The present application describes the visual defect detection device for intelligent indicator packaging bags. The visual defect detection device proposed in this application includes a conveyor belt, a support platform 1, a tension maintaining assembly 2, a loading fixture 3, and an alignment component 4.

[0080] The conveyor belt is used to provide driving force in the forward and backward direction; specifically, in this embodiment, the conveyor belt specifically refers to a conveyor belt with an end-to-end structure, the upward-facing side of which is the conveying surface 100 for supporting the conveyed object.

[0081] The support platform 1 is set on the conveying surface 100, and a pre-positioning structure 5 is provided between the support platform 1 and the conveying surface 100. In actual use, the pre-positioning structure 5 can ensure that the support platform 1 does not slip or deviate during the process of moving with the conveying surface 100.

[0082] A turntable 6 is rotatably mounted on the upper side of the bearing platform 1. In actual use, the turntable 6 can rotate relative to the bearing platform 1 with the up and down direction as the axis, and this turntable 6 is connected to a rotation drive component 11 for driving its rotation relative to the bearing platform 1.

[0083] Tension maintaining component 2 is installed on turntable 6 and is used to connect with the packaging bag placed on turntable 6 so that the bottom surface of the packaging bag is tightly attached to the upper side of turntable 6 and the opening is kept facing upward so as to facilitate the insertion of objects into the packaging bag from top to bottom.

[0084] The loading fixture 3 is disposed on the upper side of the conveying surface 100. During equipment operation, this loading fixture 3 has the degree of freedom to move in the vertical direction relative to the conveying surface 100, and is connected to a lifting drive member 7 for providing lifting driving force.

[0085] The loading fixture 3 has an upward-opening receiving cavity 31 inside; the receiving cavity 31 is provided with a temperature regulating component 32, and the receiving cavity 31 is also used to contain an indicator 200 that simulates a specific gas concentration or the content of microbial metabolites.

[0086] It should be noted here that indicator 200 specifically refers to a pre-prepared article, which is used to simulate the specific internal chemical environment of the smart indicator packaging bag during actual use, as a standard substance or standard substance carrier. In other words, indicator 200 is a controlled, reusable source of chemical environment simulation, whose fundamental function is to replace the real product (such as spoiled food) and actively and precisely generate the target chemical stimulus inside the packaging bag during detection.

[0087] In actual preparation, staff will design the chemical characteristics of indicator 200 according to the type of smart indicator function of the packaging bag to be verified, so that it can simulate one or more of the following chemical conditions:

[0088] (a) Specific gas concentrations: For example, simulating oxygen depletion, carbon dioxide accumulation, or the release of putrefactive gases such as ammonia, hydrogen sulfide, and ethylene.

[0089] (ii) Content of microbial metabolites: Simulates the specific volatile organic compounds or pH changes caused by microbial activity.

[0090] In addition, the physical form of the indicator 200 may be (but is not limited to): a solid volatile substance, a porous carrier impregnated with a reaction solution, a sustained-release capsule encapsulating a reactant, or a miniaturized controlled biochemical reaction unit.

[0091] After the loading fixture 3 is placed into the packaging bag, the temperature inside the bag can be changed by the temperature regulating component 32, thereby causing an adaptive change on the outer surface of the packaging bag. Simultaneously, by manually replacing different indicators 200 in advance, the smart indicator layer (such as functional inks or coatings) of the packaging bag is stimulated to produce a predetermined color or pattern change. During this process, the temperature regulating component 32 also heats or cools the receiving cavity 31. This temperature control regulates the evaporation or reaction rate of the indicator 200, ensuring the lifespan of the indicator 200 and the efficiency and stability of the chemical reaction.

[0092] Alignment component 4 is located on the outside of loading fixture 3, and visual information acquisition component 10 is fixedly mounted on alignment component 4. In this embodiment, visual information acquisition component 10 is an image acquisition device. As the core sensing unit of the detection device, it is used to accurately and automatically acquire dynamic appearance images of the outer periphery of the packaging bag after the intelligent indication function of the packaging bag is triggered in the internal environment simulated by loading fixture 3. This component is usually composed of a high-resolution industrial camera and a matching customized optical lens and lighting system. It achieves precise positioning through alignment component 4, which is mechanically linked with lifting drive component 7. Combined with the rotational movement of turntable 6, it can completely capture the visual response information such as color and pattern of the packaging bag under environmental changes in all directions and multiple angles, providing raw image data for subsequent evaluation of the accuracy and consistency of the intelligent indication function.

[0093] In actual use, the alignment component 4 has the working degree of freedom to move so that the visual information acquisition component 10 is oriented toward the packaging bag, and also has the avoidance degree of freedom to move to avoid the movement trajectory of the packaging bag.

[0094] The alignment component 4 is connected to the lifting drive component 7 via the linkage structure 8. Thus, when the lifting drive component 7 moves the loading fixture 3 downward to contact the inner bottom surface of the packaging bag, the linkage structure 8 can synchronously drive the alignment component 4, so that the visual information acquisition component 10 is accurately aligned with the outer circumferential surface of the packaging bag.

[0095] In this embodiment, the support platform 1 is fixed to the conveying surface 100 by a pre-positioning structure 5, and the turntable 6 on it can rotate the packaging bag under the drive of the rotation drive component 11. The tension maintaining component 2 ensures that the packaging bag maintains an unfolded and stable posture on the turntable 6. On this basis, the lifting drive component 7 can drive the loading fixture 3 to move downward into the packaging bag; through its internal temperature regulating component 32 and preset indicator 200, it can simulate the internal environmental conditions that the packaging bag may encounter in actual use, such as temperature changes, specific gas concentrations, or microbial metabolite content, thereby stimulating the packaging bag's appearance to produce preset intelligent indication changes.

[0096] As the loading fixture 3 enters the packaging bag to simulate the internal environment, the alignment component 4 moves synchronously with the lifting drive component 7 via the linkage structure 8. This linkage ensures that when the loading fixture 3 is in place, the visual information acquisition component 10 can automatically move to the preset station and accurately align with the outer peripheral surface of the packaging bag, providing a stable shooting angle for subsequent image acquisition. Combined with the rotation function of the turntable 6, the visual information acquisition component 10 can acquire a sequence of images of the outer peripheral surface of the packaging bag under the simulated environment and at different rotation angles.

[0097] The aforementioned structure achieves dynamic, in-situ detection of the intelligent indicator function by simulating the actual usage environment and simultaneously triggering appearance acquisition. Its core principle lies in: actively constructing and controlling the test environment inside the packaging bag using the loading fixture 3, causing the intelligent indicator layer of the packaging bag to undergo chemical or physical changes according to simulated conditions (such as temperature and gas), which are reflected in its appearance; simultaneously, mechanical linkage ensures that the timing and angle of visual acquisition are strictly synchronized with the test state, thereby stably and accurately recording the appearance response of the packaging bag under different "working conditions." The rotation of the turntable 6 enables a comprehensive circumferential scan of the packaging bag, avoiding blind spots in detection.

[0098] It should be noted that: in this embodiment, as Figure 15 and Figure 22 As shown, the bottom surface of the loading fixture 3 is provided with a concave ball groove, and the concave ball groove has protruding rollers; therefore, the bottom surface of the loading fixture 3 contacts the inner bottom surface of the packaging bag through multiple rollers, forming a multi-point fit. On this basis, when the turntable 6 drives the packaging bag to rotate, the rollers roll relative to the turntable 6 and the packaging bag to ensure that the loading fixture 3 does not rotate synchronously.

[0099] The visual defect detection device provided in this embodiment, compared with the prior art, can actively simulate the actual internal use environment of the packaging bag through the built-in loading fixture 3, and perform multi-angle, automated visual acquisition of the packaging bag's appearance after environmental triggering. This design overcomes the limitations of conventional detection, which can only evaluate static appearance or depend on changes in the external environment, and can more realistically and controllably verify the reliability, sensitivity, and consistency of the intelligent indicator packaging bag's functions. It not only significantly improves the accuracy of the detection results in predicting actual performance, but also automatically completes the entire process of "environmental simulation - image acquisition - rotational scanning" with a single clamping, greatly improving detection efficiency and automation, and providing a dedicated and efficient detection method for the quality control of intelligent packaging.

[0100] In some embodiments, such as Figure 1 and Figure 2 As shown, the aforementioned visual defect detection device for intelligent indicator packaging bags also includes a gantry frame 9, which is fixedly installed on the outside of the conveyor belt and includes a crossbeam plate 91 above the conveyor surface 100.

[0101] The loading fixture 3 is set in the space between the crossbeam plate 91 and the conveying surface 100. The aforementioned lifting drive component 7 includes a take-up roller 71 and two traction belts 72.

[0102] The take-up roller 71 is rotatably mounted on the crossbeam plate 91 in the left-right direction and is connected to a first rotary motor 711 for driving its rotation.

[0103] Two traction belts 72 are arranged side by side on both sides of the loading fixture 3 in a left-right direction. The upper end of each traction belt 72 is connected to the take-up roller 71, and the lower end is connected to the loading fixture 3.

[0104] When the first rotating motor 711 drives the take-up roller 71 to rotate and take up the traction belt 72, the traction belt 72 wraps around the roller surface and applies an upward pulling force to the loading fixture 3, causing it to rise; when the take-up roller 71 rotates in the opposite direction to unwind, the loading fixture 3 moves downward under gravity or auxiliary control.

[0105] In some embodiments, such as Figure 2 , Figure 15 and Figure 18 As shown, a feeding port 911 extending vertically is provided on the crossbeam plate 91. The aforementioned loading fixture 3 is coaxially arranged with this feeding port 911, and the traction belt 72 can drive the loading fixture 3 to move upward until its upper part is embedded in the feeding port 911, and align the upper end face of the loading fixture 3 with the upper side face of the crossbeam plate 91, so as to facilitate the placement or replacement of the indicator 200 in the receiving cavity 31 from above.

[0106] The take-up roller 71 is positioned on one side of the feed port 911 along the front-to-back direction to avoid interfering with the operating space of the feed port 911.

[0107] Based on the aforementioned structure, in this embodiment, as Figure 20 As shown, each traction belt 72 is also equipped with a deflector wheel 912 on its transmission path. The deflector wheel 912 is rotatably mounted on the upper side of the crossbeam plate 91, located between the take-up roller 71 and the feed port 911; the traction belt 72 passes around the outer circumference of the deflector wheel 912.

[0108] This design changes the direction of the traction force, allowing the take-up roller 71 to be arranged laterally, thereby optimizing the overall layout and reducing the longitudinal dimension of the mechanism.

[0109] In some embodiments, such as Figures 15 to 17 As shown, the portal frame 9 also includes two side wing plates 92 that are vertically connected to the left and right sides of the crossbeam plate 91, respectively, to form a support system for the crossbeam plate 91 relative to the factory ground, ensuring the stable arrangement of the crossbeam plate 91.

[0110] Based on the foregoing, the alignment component 4 includes two swing arms 41 and an alignment shell 42.

[0111] Two swing arms 41 are respectively hinged to the inner surfaces of the two side wing plates 92 in the left and right directions; one of the swing arms 41 is connected to the take-up roller 71 through the aforementioned linkage structure 8.

[0112] The alignment shell 42 is disposed between the two swing arms 41, and its left and right sides are respectively hinged to the ends of the two swing arms 41, so that when the swing arm 41 which has a transmission connection with the take-up roller 71 swings synchronously with the linkage structure 8, the alignment shell 42 moves around the hinge axis of the swing arm 41, and the other swing arm 41 swings synchronously at the same angle.

[0113] The visual information acquisition component 10 is fixedly mounted on the outer side of the alignment shell 42. In this embodiment, to ensure that the orientation of the visual information acquisition component 10 remains horizontal, a pendant counterweight component 421 is provided on the alignment shell 42. This pendant counterweight component 421 includes a suspension rope connected to the bottom surface of the alignment shell 42 and a counterweight block connected to the end of the suspension rope. This design allows the pendant counterweight component 421 to automatically adjust the posture of the alignment shell 42 by gravity during the swing of the swing arm 41, ensuring that the lens of the visual information acquisition component 10 always faces a preset forward or backward direction and does not rotate arbitrarily.

[0114] By adopting the above technical solution, since the visual information acquisition component 10 is always facing the front-back direction, that is, the direction of the packaging bag under the gantry frame 9 and the direction in which the packaging bag moves on the conveying surface 100, it can realize its visual information acquisition function on the one hand, and ensure the monitoring of the packaging bag's flat conveying process on the other hand.

[0115] In some embodiments, such as Figure 15 , Figure 17 and Figure 19 As shown, each swing arm 41 has a connecting shaft 411; the connecting shaft 411 is hinged to the side wing plate 92 to realize the hinged relationship between the swing arm 41 and the side wing plate 92.

[0116] Based on the foregoing, in this embodiment, the linkage structure 8 includes a linkage shaft 81 and a synchronous belt 82.

[0117] The linkage shaft 81 is rotatably positioned above the crossbeam plate 91 and is coaxially and fixedly connected to the take-up roller 71.

[0118] The synchronous belt 82 wraps around the outer periphery of the connecting shaft 411 of the linkage shaft 81 and the swing arm 41 on the same side as the take-up roller 71, thereby achieving synchronous rotation between the linkage shaft 81 and the connecting shaft 411. Specifically, the connecting shaft 411 has an enlarged diameter portion 412 for cooperating with the synchronous belt 82. The enlarged diameter portion 412 protrudes outward along the radial direction of the connecting shaft 411, and its outer diameter is larger than that of the linkage shaft 81.

[0119] This design, by changing the transmission ratio, can amplify the small rotation angle of the take-up roller 71 into a large swing angle of the swing arm 41, thereby triggering the alignment member 4 to perform a sufficiently large avoidance or alignment action with a small lifting stroke.

[0120] It should be further explained that, in order to improve the stability of the above transmission relationship, a tooth groove can be formed on the inner side of the synchronous belt 82, and convex teeth matching the tooth groove can be provided on the outer peripheral surface of the expanded diameter portion 412 and the outer peripheral surface of the end of the linkage shaft 81. When the linkage shaft 81 rotates, the convex teeth and the tooth groove come into contact, thereby driving the synchronous belt 82 to translate, thereby driving another set of convex teeth and tooth grooves to engage, completing the rotational drive of the connecting shaft 411.

[0121] In some embodiments, such as Figure 21 and Figure 22 As shown, an annular protrusion 33 is provided on the inner wall of the receiving cavity 31. The upper side of this protrusion 33 is used to support the placed indicator 200, so that it is kept at a certain distance from the bottom of the cavity, thereby enclosing and forming the lower cavity.

[0122] The aforementioned temperature regulating component 32 is a thermoelectric temperature control plate, such as a Peltier element, fixedly installed in the lower chamber, used to precisely control the chamber temperature.

[0123] Multiple ventilation holes 34 communicating with the lower chamber are provided on the outer peripheral surface of the loading fixture 3; this design allows the air or simulated gas in the chamber to exchange with the internal space of the packaging bag, and also provides a channel for temperature transfer.

[0124] In some embodiments, such as Figures 3 to 9 As shown, the tension maintaining assembly 2 includes a translation plate 21 and a lifting rod 22.

[0125] The translating plate 21 is slidably disposed on the upper side of the turntable 6 and connected to the turntable 6 via the elastic member 62; this connection gives the translating plate 21 an elastic tendency to always move away from the center of the turntable 6 (i.e., the packaging bag placement area).

[0126] The lifting rod 22 is slidably mounted on the translation plate 21 in the vertical direction. The lower end of the lifting rod 22 has a downward-bent section 221; in actual use, this bent section 221 is used to insert into an open packaging bag and abut against the inner bottom surface of the packaging bag.

[0127] The upper end of the lifting rod 22 is provided with a cantilever 222 that can rotate in the vertical direction. When the lifting rod 22 moves to the highest position, the cantilever 222 can be rotated to a horizontal position, so that the lower end face of the cantilever 222 abuts against the upper end face of the translation plate 21, thereby restricting the lifting rod 22 from moving further downward relative to the translation plate 21 and locking the lifting rod 22 at the corresponding height to facilitate the picking and placing of packaging bags.

[0128] In use, place the packaging bag on the turntable 6, press down the lifting rod 22 so that its bent part 221 inserts into the bottom of the bag; then rotate the cantilever 222 to lock it. At this time, under the action of the elastic element 62, the translation plate 21 tends to move outward, and through the lifting rod 22 and the bent part 221, an outward tension is generated on the bottom of the packaging bag, thereby flattening the bottom of the bag and making it fit tightly against the surface of the turntable 6.

[0129] In some embodiments, such as Figures 7 to 9 As shown, a guide groove 61 is provided on the upper side of the turntable 6, and a slider 211 is provided on the lower side of the translation plate 21, which is slidably embedded in the guide groove 61, so as to realize the sliding connection between the translation plate 21 and the upper side of the turntable 6.

[0130] The elastic element 62 is specifically a compression spring embedded in the guide groove 61. The axis of the spring is parallel to the length direction of the guide groove 61 and is located on the side of the slider 211 on the translation plate 21 facing the center of the turntable 6. When the translation plate 21 moves towards the center and compresses the spring, the restoring force of the spring provides the translation plate 21 with an elastic force that moves away from the center.

[0131] In some embodiments, such as Figures 10 to 14As shown, a reserved slot 12 is provided on the upper side of the support 1, and the rotation drive component 11 is a second rotation motor fixedly installed in the reserved slot 12; correspondingly, a vertical through hole is provided at the opening of the reserved slot 12 for the power output shaft of the second rotation motor to pass through.

[0132] The lower side of the turntable 6 is provided with a shaped groove 63, which is coaxially arranged with the power output shaft of the second rotary motor. Correspondingly, the power output end of the second rotary motor has a shaped block 111 that matches the shape of the shaped groove 63; the two can be fitted together to transmit torque, and at the same time allow the turntable 6 to be quickly lifted after contacting the limiting relationship, thereby separating from the support platform 1.

[0133] To achieve the above-mentioned limiting relationship: the upper side of the support 1 also has an annular groove 13 surrounding the reserved groove 12. The annular groove 13 is fitted with a matching connecting ring 14, and the connecting ring 14 has multiple connecting screws 141 extending vertically upward. The multiple connecting screws 141 are arranged at intervals along the circumference of the connecting ring 14.

[0134] The turntable 6 has multiple through holes 64, each corresponding to a different connecting screw 141. During installation, the turntable 6 is placed on the base 1, with each connecting screw 141 passing through its corresponding through hole 64. Then, a matching connecting nut 142 is screwed onto the protruding end of each connecting screw 141 and tightened to secure the turntable 6 to the base 1.

[0135] To prevent the above structure from affecting the placement of the packaging bag, a recessed groove 65 is provided on the upper side of the turntable 6, and the aforementioned through hole 64 is located at the bottom of the recessed groove 65. This design ensures that when the connecting nut 142 is tightened, it is completely contained within the recessed groove 65 and does not protrude from the upper surface of the turntable 6. Furthermore, a filler plate 66 is embedded in the recessed groove 65; the filler plate 66 covers the aforementioned connecting screw 141 and connecting nut 142, and its upper side is flush with the upper side of the turntable 6, forming a complete and flat support surface together with the upper side of the turntable 6 for placing the packaging bag and arranging the tension maintaining component 2.

[0136] In some embodiments, such as Figure 1 , Figure 3 and Figure 14 As shown, the prepositioning structure 5 includes multiple protrusions 51 and a single set of grooves 52.

[0137] Multiple protrusions 51 are fixedly disposed on the conveying surface 100 with conveying components and are arranged at intervals along the length direction of the conveying surface 100 to form multiple sets of protrusions 51. Based on this, each set of protrusions 51 includes multiple protrusions 51 arranged side by side along the width direction of the conveying surface 100; in this embodiment, each set of protrusions 51 includes two protrusions 51.

[0138] The aforementioned single set of grooves 52 is formed on the bottom surface of the support 1; in this embodiment, the set of grooves 52 includes two grooves 52 arranged side by side along the horizontal direction.

[0139] When it is necessary to fix the support platform 1, place it on the conveying surface 100, and align the two grooves 52 with the two protrusions 51 respectively. This will enable the support platform 1 to be quickly positioned and limited in the front-back and left-right directions, preventing the support platform 1 from sliding during the testing process.

[0140] It should be further noted that the aforementioned protrusion 51 is cylindrical, and the groove 52 adopts a groove structure that matches the protrusion 51. In actual design, the protrusion 51 can be made of an elastic material with an outer diameter slightly larger than the inner diameter of the groove 52, so that the protrusion 51 can fully compress with the inner wall of the groove 52 to achieve an interference fit, prevent the protrusion 51 from dislodging from the groove 52, and enhance the stability of the support 1 moving on the conveying surface 100.

[0141] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A visual defect detection device for intelligent indicator-type packaging bags, comprising a belt conveyor member for providing driving force for movement in the back-and-forth direction, characterized in that, Also includes: A support platform is disposed on the conveying surface with the conveying component and has a pre-positioning structure between it and the conveying surface; a turntable is provided on the upper side of the support platform, and the turntable is connected to a rotation drive component. A tension maintaining component is provided on the turntable for contacting a packaging bag placed on the turntable, such that the bottom surface of the packaging bag is in contact with the upper side of the turntable and is open upwards; A loading fixture, disposed above the conveying surface, has a degree of freedom to move vertically relative to the conveying surface and is connected to a lifting drive component; the loading fixture has a receiving cavity, in which a temperature regulating component is disposed, and the receiving cavity is also used to hold an indicator simulating a specific gas concentration or the content of microbial metabolites; and An alignment component is disposed on the outside of the loading fixture, and a visual information acquisition component is disposed on the alignment component; The alignment member has a degree of freedom to move so that the visual information acquisition component is oriented toward the packaging bag, and also has a degree of freedom to move to avoid the movement trajectory of the packaging bag; Furthermore, the alignment component is connected to the lifting drive component via a linkage structure, so that when the loading fixture moves downward to contact the inner bottom surface of the packaging bag, the visual information acquisition component faces the outer peripheral surface of the packaging bag.

2. The intelligent indicator-type packaging bag visual defect detection device as described in claim 1, characterized in that, The visual defect detection device also includes: A gantry frame is used to be fixedly installed on the outside of the conveyor belt, and it includes a crossbeam plate above the conveyor surface; The loading fixture is disposed between the crossbeam plate and the conveying surface, and the lifting drive component includes: A take-up roller is rotatably mounted on the crossbeam plate in a left-right direction and is driven by a first rotary motor for rotating it; and Two traction belts are arranged side by side on both sides of the loading fixture in the left-right direction, and both ends of each traction belt are connected to the take-up roller and the loading fixture, respectively. When the first rotating motor drives the take-up roller to rotate, the traction belt can be wound around the outer periphery of the take-up roller to provide an upward pulling force to the loading fixture; or, the traction belt can be unwound from the outer periphery of the take-up roller to move the loading fixture downward.

3. The intelligent indicator-type packaging bag visual defect detection device as described in claim 2, characterized in that, The crossbeam plate has a feeding port that runs through the vertical direction; the loading fixture is coaxially arranged with the feeding port, and the traction belt can drive the loading fixture to move into the feeding port and align the upper end face of the loading fixture with the upper side face of the crossbeam plate. The take-up roller is positioned on one side of the feed inlet facing the front-to-back direction, thus avoiding the feed inlet; and each traction belt further includes: A deflector wheel is rotatably mounted on the upper side of the crossbeam plate, positioned between the take-up roller and the feed inlet, and the outer circumferential surface of the deflector wheel is in contact with the traction belt.

4. The intelligent indicator-type packaging bag visual defect detection device as described in claim 2, characterized in that, The portal frame further includes two side wing plates respectively connected to the left and right sides of the crossbeam plate; the alignment member includes: Two swing arms are hinged to the inner surfaces of the two side wing plates in the left-right direction, and one of the swing arms is connected to the take-up roller via the linkage structure; and A positioning shell is disposed between the two swing arms, and its left and right sides are respectively hinged to the two swing arms; the visual information acquisition component is fixedly disposed on the outer side of the positioning shell, and the positioning shell has a pendant counterweight component to keep the visual information acquisition component facing the front or rear side when the swing arms swing.

5. The intelligent indicator-type packaging bag visual defect detection device as described in claim 4, characterized in that, Each of the swing arms has a connecting shaft that is hinged to the corresponding side wing plate, and the linkage structure includes: A linkage shaft is rotatably disposed above the crossbeam plate and coaxially connected to the take-up roller; and A timing belt is wrapped around the outer periphery of the linkage shaft and the connecting shaft to synchronize the rotation of the linkage shaft and the connecting shaft; The connecting shaft has an enlarged diameter portion that mates with the synchronous belt. The enlarged diameter portion extends radially outward along the connecting shaft, and the outer diameter of the enlarged diameter portion is larger than the outer diameter of the linkage shaft.

6. The intelligent indicator-type packaging bag visual defect detection device as described in claim 1, characterized in that, The inner wall of the receiving cavity has a boss, and the upper side of the boss is used to support the indicator; A lower chamber is formed between the boss and the bottom surface of the receiving cavity. The temperature regulating component is a thermoelectric temperature control plate fixedly installed in the lower chamber. Furthermore, a plurality of vent holes communicating with the lower chamber are provided on the outer peripheral surface of the loading fixture.

7. The intelligent indicator-type packaging bag visual defect detection device as described in claim 1, characterized in that, The tension maintaining component includes: A translational plate is slidably disposed on the upper side of the turntable and connected to the turntable via an elastic member, so that the translational member has an elastic degree of freedom to move away from the packaging bag placement area; and The lifting rod is slidably mounted on the translation plate in the vertical direction, and one end of it has a downwardly extending bent portion, which is used to insert into the packaging bag and abut against the inner bottom surface of the packaging bag; The lifting rod has a cantilever at one end away from the bend, which is rotatably connected to the cantilever in the vertical direction; the cantilever is used to rotate to abut against the upper surface of the translation plate to limit the downward movement of the lifting rod relative to the translation plate.

8. The intelligent indicator-type packaging bag visual defect detection device as described in claim 7, characterized in that, The upper side of the turntable is provided with a guide groove, and the translation plate has a slider that is slidably embedded in the guide groove. The elastic element is a spring embedded in the guide groove; the axial direction of the spring is parallel to the length direction of the guide groove, and the spring is located on the side of the translation plate facing the packaging bag placement area.

9. The intelligent indicator-type packaging bag visual defect detection device as described in claim 1, characterized in that, The upper side of the support platform is provided with a reserved slot, and the rotation drive component is a second rotation motor fixedly installed in the reserved slot; The turntable has a shaped groove on its lower side, which is coaxially arranged with the power output shaft of the second rotating motor, and the power output end of the second rotating motor has a shaped block suitable for embedding in the shaped groove. The upper side of the support platform also has an annular groove surrounding the reserved slot, a connecting ring is embedded in the annular groove, and the connecting ring has multiple connecting screws extending upward. The turntable is provided with multiple through holes suitable for the multiple connecting screws to pass through one by one, and each of the connecting screws has a connecting nut threadedly connected to its protruding end. The upper side of the turntable is provided with a recessed groove, and the through hole is opened at the bottom of the recessed groove so that each of the connecting screws and the connecting nuts is located in the recessed groove; A filling plate is embedded in the sinking trough, and the upper side of the filling plate is aligned with the upper side of the turntable to jointly support the packaging bag.

10. The intelligent indicator-type packaging bag visual defect detection device as described in claim 1, characterized in that, The pre-positioning structure includes: Multiple protrusions are disposed on the conveying surface and arranged at intervals along the length of the conveying surface; and A groove is formed on the bottom surface of the support platform for the protrusion to be inserted.

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