Level bubble batch detection and analysis equipment and detection method based on machine vision

Abstract

The present invention relates to the field of automated detection technology, and proposes a machine vision-based level bubble batch detection and analysis equipment and detection method, which is composed of a frame, a detection fixture, a linear transport component, a visual detection mechanism, a material shifting and spacing mechanism, and a feeding mechanism. The detection fixture has a matrix layout of level bubble accommodating holes, and each hole is equipped with a lifting block that can be controlled by air pressure. The linear transport component realizes the precise movement of the detection fixture, and the visual detection mechanism includes a CCD camera and a light source that can move in the X and Z axis directions. The material shifting and spacing mechanism ensures the accurate positioning of the level bubble, and the feeding mechanism realizes the automatic transportation and spacing of the level bubble. In the work flow, the feeding mechanism first transports the level bubble to the material shifting and spacing mechanism, and then the spacing actuator accurately separates the level bubble, and the lifting block places the level bubble into the detection position, and then the visual detection mechanism captures the image and performs multi-parameter evaluation, and finally the system analyzes the results and marks or removes unqualified products.

Description

Technical Field

[0001] The present invention relates to the field of automated detection technology, and in particular to a cylindrical vial batch detection and analysis device and method based on machine vision. The present invention is applied to the precision measuring instrument manufacturing industry, and realizes efficient and accurate detection of large batches of cylindrical vials through automated feeding, precise positioning, multi-parameter visual detection and intelligent analysis. Background Art

[0002] The cylindrical vial is the core component of the level, and its quality directly affects the accuracy and reliability of the measurement. As the demand for precision measurement in modern industry continues to increase, the inspection requirements for cylindrical vials are becoming more and more stringent.

[0003] In the prior art, the "Vial for Leveler" as described in application publication number CN105066960A shows a typical cylindrical vial structure. The vial has a vial body and a substantially cylindrical cavity formed by the inner wall of the vial body, and the cavity is used to contain liquid. The vial body is arranged in a carrier, and the carrier includes two transparent covers and an outer shell body that is preferably configured as a circular ring. The outer wall of the vial body has an arched area, which is arched along the longitudinal axis of the cavity to achieve a magnifying glass effect. Although this structure improves the readability of the vial, when performing visual inspection, each vial needs to be placed individually in the positioning hole of the jig to avoid blocking the line of sight, which increases the complexity and time cost of the inspection process.

[0004] In order to solve the problem of detection efficiency, some automation solutions have been proposed. For example, the authorization announcement number CN 216977890U discloses an "automatic detection device for the angle value of the level bubble based on machine vision". The device includes components such as a frame, a camera support frame, a light source support frame, an industrial CCD camera, an LED surface light source, a detection platform and a level bubble fixing frame. This design realizes the automatic adjustment of the inclination angle of the level bubble and the automatic detection of the angle value during the detection process, thereby improving the detection efficiency and accuracy.

[0005] However, although these existing technologies have been improved in some aspects, they still have the following shortcomings:

[0006] Limited detection efficiency: Most devices can only detect a single or a small number of vials at a time, which is difficult to meet the needs of mass production.

[0007] Lack of flexibility: The detection parameters and methods are often fixed, making it difficult to adapt to the detection needs of different types of vials.

[0008] Room for improvement in accuracy: Some devices still have errors in the positioning and detection of the level bubble, which affects the accuracy of the test results.

[0009] Insufficient automation: Many links still require manual intervention, increasing the possibility of human error.

[0010] Single testing item: Most equipment can only test a limited number of parameters of the spirit level and cannot conduct a comprehensive quality assessment.

[0011] Production efficiency bottleneck: The detection speed often cannot keep up with the production speed, becoming a key factor restricting the improvement of production capacity.

[0012] Lack of batch processing capabilities: Most existing equipment is designed for single level bubbles and lacks an effective batch processing mechanism.

[0013] To solve the above problems, the industry has been exploring more efficient and accurate methods for detecting cylindrical vials. Some solutions try to use machine vision technology to improve detection accuracy, but often ignore the issues of vial positioning and batch processing. Other solutions focus on improving detection speed, but lack accuracy and comprehensiveness.

[0014] Therefore, there is an urgent need for a cylindrical vial detection device that can take into account efficiency, accuracy, flexibility and comprehensiveness to meet the needs of modern industrial production. Such a device should be able to achieve batch detection, precise positioning, multi-parameter evaluation, and have a high level of automation, thereby significantly improving the detection efficiency and quality control level of cylindrical vials. At the same time, the new detection device should also take into account the impact of different vial structures (such as the arched area described in CN105066960A) on the detection process and be able to adapt to these special structures. Summary of the invention

[0015] In view of this, the present invention provides a machine vision-based batch detection and analysis device for vials, aiming to solve the problems of low efficiency, insufficient precision and poor flexibility in existing detection technologies. The core innovation of the device is to achieve batch loading, precise positioning and efficient detection of vials.

[0016] The technical solution of the embodiment of the present invention provides a device for detecting a cylindrical vial bubble, characterized in that it includes:

[0017] A rack having a platform;

[0018] A detection jig is arranged above the platform and has an upper flat surface, and the upper flat surface is provided with multiple rows and columns of vial accommodating holes;

[0019] A linear transport component, connected to the detection fixture, and used to drive the detection fixture to move;

[0020] A visual inspection mechanism is disposed above the inspection fixture and can move along the X-axis and Z-axis directions;

[0021] The material shifting and spacing mechanism comprises a backing plate and a spacing actuator, wherein the spacing actuator has a plurality of arc concave surfaces corresponding to the hole wall of the vial accommodating hole;

[0022] A feeding mechanism, used for feeding a cylindrical vial to the material shifting and spacing mechanism;

[0023] Wherein, a lifting block which can move up and down is provided in the vial accommodating hole, and is used to adjust the height of the cylindrical vial.

[0024] Beneficial effects: The batch automatic detection of cylindrical vials is realized, and the detection efficiency and accuracy are improved. The coordinated work of multiple components ensures the precise positioning and all-round detection of the vials.

[0025] Preferably, the bottom of the level bubble receiving hole of the detection fixture is provided with interconnected airways for controlling the up and down movement of the lifting block. Beneficial effect: By controlling the lifting block through the airway, the height of the level bubble can be precisely adjusted, which is conducive to adapting to different detection requirements.

[0026] Preferably, the visual inspection mechanism comprises a light source assembly, a CCD camera and a fixing seat for mounting the light source assembly and the CCD camera. Beneficial effect: The composition of the visual inspection mechanism ensures high-quality image acquisition and improves the accuracy of detection.

[0027] Preferably, the backing plate of the material-shifting and spacing mechanism is in close and slidable contact with the upper flat surface. Beneficial effect: The close and slidable contact between the backing plate and the upper flat surface ensures the precise positioning and smooth movement of the material-shifting and spacing mechanism.

[0028] Preferably, an adjustable structure that is raised by power control is provided on the arc concave surface of the spacing actuator. Beneficial effect: The adjustable structure enhances the spacing effect and improves the accuracy of the positioning of the level bubble.

[0029] Preferably, the adjustable structure is a micro airbag or a flexible protruding element driven by air pressure. Beneficial effect: The micro airbag or the flexible protruding element driven by air pressure provides more flexible and precise distance control.

[0030] Preferably, it further comprises a butt joint, which is arranged at a section of the backing plate extending away from the hinged side in the length direction and is used for temporary connection or separation with the feeding mechanism. Beneficial effect: The design of the butt joint facilitates the rapid connection and separation of the feeding mechanism and improves the operational flexibility.

[0031] The technical solution of the embodiment of the present invention also provides a method for detecting a cylindrical vial, comprising the following steps:

[0032] S1 Preparation stage: Check and ensure that the rack, inspection fixture, linear transport assembly, and visual inspection mechanism are in place, and correctly connect the feeding mechanism to the docking joint; control the lifting block to rise to the same level as the upper edge of the level bubble accommodating hole through air pressure;

[0033] S2 feeding process: multiple cylindrical level bubbles are transported to the backing plate of the material shifting and spacing mechanism through the feeding mechanism, and the induction control is used to ensure that the backing surface of the backing plate is closely filled with cylindrical level bubbles;

[0034] S3 distance positioning: drive the distance actuator to gradually close from the hinge, so that the cylindrical level bubble enters the arc concave surface in turn to achieve accurate distance;

[0035] S4 Loading in place: Control the lifting block to descend, so that the cylindrical level bubble after separation falls accurately into the level bubble receiving hole and enters the waiting state;

[0036] S5 cyclic operation: the detection jig or feeding mechanism is moved by the linear transport component, and the above steps are repeated until all the vial accommodating holes are loaded;

[0037] S6 Visual inspection preparation: Move the visual inspection mechanism to the appropriate position and adjust the height of each column of cylindrical level bubbles according to inspection requirements;

[0038] S7 performs inspection: the CCD camera of the visual inspection mechanism captures the image of the level bubble, and the light source component provides the necessary lighting, and transmits the image data to the image processing and analysis system in real time;

[0039] S8 Result processing: Classify the cylindrical vials according to the evaluation results, mark or remove the unqualified ones, and direct the qualified ones to the next process.

[0040] Beneficial effects: A complete set of testing procedures is provided, from preparation to result processing, to achieve efficient and accurate batch testing.

[0041] Preferably, the inspection of the visual inspection mechanism includes evaluating the size, shape, position accuracy of the bubble, transparency of the glass tube and clarity of the scale. Beneficial effects: Multi-parameter evaluation ensures comprehensive quality control and improves the comprehensiveness and reliability of the inspection.

[0042] Preferably, when one inspection jig is inspecting, loading or unloading operations are performed on other inspection jigs at the same time. Beneficial effects: Parallel operation greatly improves the overall inspection efficiency and reduces downtime.

[0043] Preferably, an adjustable protrusion structure is provided on the arc concave surface of the separation actuator, and the separation effect is adjusted by controlling the protrusion degree of the protrusion structure during the separation process. Beneficial effect: The adjustable protrusion structure further optimizes the separation process, adapts to different types of level bubbles, and improves the versatility and accuracy of the equipment.

[0044] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0045] The present invention significantly improves the detection efficiency, accuracy and flexibility. Through the coordinated work of the frame, the detection fixture, the linear transport assembly, the visual detection mechanism, the material shifting and spacing mechanism and the feeding mechanism, the batch loading, precise positioning, efficient detection and automated assembly of the level bubble are realized. In particular, the airway control of the jacking block, the precise image acquisition of the visual detection mechanism, the close sliding contact and adjustable structure of the material shifting and spacing mechanism, and the quick connection design of the joint work together to ensure the comprehensiveness, reliability and efficiency of the detection. In addition, the complete detection process, multi-parameter evaluation and parallel operation strategy further improve the overall detection efficiency and equipment versatility, meet different detection needs, and bring breakthrough improvements to the automated detection and analysis of cylindrical level bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 : Schematic diagram of the overall structure of the device of the present invention.

[0048] Figure 2 : right Figure 1 The center A is enlarged to show the partial enlarged view of the inspection fixture and the material shifting and spacing mechanism.

[0049] Figure 3 : Schematic diagram of the top view of the inspection fixture, material shifting and spacing mechanism and feeding mechanism.

[0050] Figure 4 : Schematic diagram of the structure of the device of the present invention from another perspective (single set of detection fixture configuration).

[0051] Figure 5 : Schematic diagram of the cross section of a cylindrical vial.

[0052] Figure 6 : Schematic diagram of the working process of the material shifting and spacing mechanism.

[0053] Figure 7 : Schematic diagram of a backing plate embodiment.

[0054] Figure 8 : Schematic diagram of an embodiment of installing a belt conveyor line in a backing plate.

[0055] Fig. 9 : Figure 7 Schematic diagram of the backrest plate from multiple angles in the embodiment.

[0056] Fig.10 : Schematic diagram of another working angle of the material shifting and spacing mechanism.

[0057] Fig.11 : Schematic diagram of the disassembled parts of the inspection fixture and the material separation mechanism.

[0058] Figure numerals: cylindrical level bubble 100, frame 10, platform 11, detection fixture 20, upper flat surface 21, level bubble accommodating hole 22, lifting block 221, airway 222, linear carrier assembly 30, track 31, mounting beam 32, power seat 33, screw seat 34, screw 35, screw nut 36, slider 37, visual inspection mechanism 40, CCD camera 41, fixed seat 42, transmission assembly 43, material shifting and spacing mechanism 50, backrest plate 51, backrest surface 511, limiting top plate 512, baffle 513, spacing actuator 52, plate surface 521, working surface 522, arc concave surface 523, driving mechanism 53, docking joint 60, feeding mechanism 70, connecting part 71, guide member 72, belt conveyor line 80, driven wheel 81, belt 82, driving motor 83. DETAILED DESCRIPTION

[0059] The following will be combined with the attached Figure 1-Figure 11 Preferred embodiments of the present invention are described in detail. Figure 1 The overall structure of the present invention is demonstrated, including the layout relationship of the main components such as the frame, the platform, the detection fixture, the linear transport assembly, the visual detection mechanism, the material shifting and spacing mechanism and the feeding mechanism. Figure 2 It is a detailed display of the components such as the level bubble accommodating hole, jacking block, airway in the detection fixture, as well as the key components such as the backing plate, spacing actuator, arc concave surface in the material shifting and spacing mechanism. Figure 3 It shows the layout of multiple rows and columns of level bubble accommodating holes of the detection fixture from a top perspective, as well as the relative position relationship between the material shifting and spacing mechanism, the feeding mechanism and the detection fixture. Figure 4 It shows the equipment structure from different angles, especially the overall layout and connection relationship between components when the equipment is equipped with a single set of testing fixtures. Figure 5 It shows the cross-section structure of a cylindrical vial, including the bubble, glass tube, scale and other features, so as to understand its interaction with the detection equipment. Figure 6It is a process that shows how the distance actuator cooperates with the backing plate when the material-dividing and distance-dividing mechanism is in working condition, and how the cylindrical vial is accurately distanced and sent into the vial accommodating hole. Figure 7 The invention discloses an embodiment of a backing plate, including the specific structure and layout of the backing surface, the limiting top plate, the baffle and other components. Figure 8 It is another embodiment of the backing board, emphasizing the design features or improvements different from the previous embodiment. Fig. 9 Shown from different angles Figure 7 The backing plate embodiment in order to more fully understand its structure and function. Fig.10 It shows the working state of the material shifting and spacing mechanism from another perspective, especially the interaction between the spacing actuator and the cylindrical level bubble. Fig.11 The key components of the inspection fixture and the material separation mechanism are disassembled and displayed so that the structure, shape and interconnection relationship of each component can be clearly seen.

[0060] It should be noted that the following description is only a preferred embodiment of the present invention, rather than a limitation of the present invention. It should be understood by those skilled in the art that various modifications and variations may be made to the present invention without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be subject to the appended claims.

[0061] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] Example:

[0063] This equipment adopts a multi-column vial hole matrix layout, combined with a pressure-controlled lifting block, to achieve precise positioning of the vial. The design of the material-shifting and spacing mechanism ensures the orderly arrangement and spacing control of the vials. The visual inspection mechanism can move in multiple axes, combined with the adjustable vial height, to achieve all-round, multi-parameter inspection. The entire inspection process is highly automated, from loading, positioning to inspection, and each link is closely connected, which greatly improves the inspection efficiency. At the same time, the design of the equipment has good flexibility and can adapt to cylindrical vials of different types and sizes to meet diverse inspection needs.

[0064] A machine vision-based vial batch detection and analysis device is applied to the cylindrical vial 100 mentioned in the background technology. The specific structure is not an improvement of the present invention and will not be described in detail. Please refer to the diagram marked 100 in the attached drawings, where Figure 5 Its cross-sectional shape is shown in FIG.

[0065] The equipment mainly includes the following parts:

[0066] 1. Rack 10: As the main support structure of the entire device, it has a platform 11. For ease of description and understanding, we set up the corresponding coordinate system XYZ in the length, width and height directions of the rack. The design of rack 10 ensures the stability and accuracy of the entire detection system and provides a reliable basic support for other components.

[0067] 2. Inspection fixture 20: Located above the platform 11, it has an upper flat surface 21. The upper flat surface 21 is provided with a plurality of rows of level bubble accommodating holes 22 parallel to the X axis and a plurality of columns parallel to the Y axis, forming a regular matrix layout. Each level bubble accommodating hole 22 is provided with a lifting block 221 that can move up and down. This design allows the position and posture of the cylindrical level bubble 100 to be accurately controlled. For each column of level bubble accommodating holes 22, air channels 222 that are interconnected are provided at the bottom thereof, and these air channels are guided to the fixture surface for easy connection with the external air pressure system. By controlling the air pressure, the up and down movement of the lifting block 221 can be achieved, thereby accurately adjusting the position of the cylindrical level bubble 100. This air pressure control mechanism not only improves the accuracy of positioning, but also increases the flexibility and controllability of the system. In the entire detection device, at least one such detection fixture is arranged, but a more preferred solution is to arrange multiple detection fixtures in parallel. This multi-jig design concept allows that when the cylindrical vials 100 in one jig are being inspected, the cylindrical vials 100 in adjacent jigs can be loaded or unloaded simultaneously, thereby significantly improving the efficiency of the entire inspection process and realizing parallel operation of the inspection, loading and unloading processes.

[0068] 3. Linear transport assembly 30: The orientation reference coordinate system of this assembly design can move along the Y-axis direction, and its number and position correspond to the layout setting of the detection fixture 20. The linear transport assembly 30 includes a movable part and a fixed part. Some parts of the movable part are connected to the detection fixture 20 to achieve precise movement of the detection fixture; the fixed part is fixedly connected to the platform 11 of the frame to ensure the stability of the entire transport system. The fixed part includes a track 31, a mounting beam 32 for positioning the track 31 and fixedly connected to the frame 10, a power seat 33 and a screw seat 34. The movable part includes a screw 35, a screw nut 36 and a slider 37. These components work together to achieve precise positioning and smooth movement of the detection fixture. It is worth noting that the linear transport assembly 30 adopts a design commonly used in the industry, and some of the parts that are not described in detail are well known to those skilled in the art, so they will not be repeated.

[0069] 4. Visual inspection mechanism 40: Located above the inspection fixture 20, the reference coordinate system can move along the X-axis and Z-axis directions. The mechanism includes a light source assembly, a CCD camera 41, a fixed seat 42 for mounting the light source assembly and the CCD camera, and a transmission assembly 43 for pushing the fixed seat 42 to move. The light source assembly provides the necessary lighting for the inspection process to ensure that the CCD camera 41 can capture a clear image of the cylindrical level bubble 100. The CCD camera 41 is responsible for obtaining a high-precision image of the cylindrical level bubble 100, providing basic data for subsequent analysis and quality control. The fixed seat 42 not only provides a stable installation platform for the light source assembly and the CCD camera 41, but also realizes the precise movement of the visual inspection mechanism in the X-axis and Z-axis directions through cooperation with the transmission assembly 43. This design enables the visual inspection mechanism to perform comprehensive and accurate inspections on the cylindrical level bubbles 100 on multiple inspection fixtures. Similarly, the transmission assembly 43 adopts a mature design in the industry, and its specific details are not described in detail here.

[0070] 5. The material shifting and spacing mechanism 50 is a key component to ensure the accurate positioning of the cylindrical vial 100, including a backing plate 51, a spacing actuator 52 and a driving mechanism 53. The backing plate 51 is a long strip member, the entire large surface of which is set on the upper flat surface 21, has a backing surface 511 and is parallel to the Y axis, covers the entire upper flat surface 21 in the Y axis direction, and is in close and slidable contact with the upper plane 21 at two edges in the Y axis direction. The spacing actuator 52 is also a long strip member, with a plate surface 521 and a working surface 522, and its length is close to that of the backing plate 51. The plate surface is attached to the backing plate 51 and is hinged to the backing plate 51 at one end, and the other end can be opened and closed relative to the backing plate 51. The working surface 522 is provided with a plurality of arc concave surfaces 523, which are spaced in the same manner as the vial accommodating hole 22, and the curvature of each arc concave surface 523 matches the cylindrical arc surface of the cylindrical vial 100. The driving mechanism 53 is arranged between the backrest plate 51 and the spacing actuator 52, for example, a cylinder is used to drive the opening and closing. In order to adapt to the arc movement during pushing, the connection between the cylinder body or the telescopic free end and the backrest plate 51 or the spacing actuator 52 is rotatable in the horizontal plane. It is worth noting that when the spacing actuator 52 is closed and the backrest plate 51 is in the appropriate position, each arc concave surface 523 is coaxial with the level bubble accommodating hole 22 below it. At this time, the space between each arc concave surface 523 and the backrest surface 511 is just enough to slightly clamp the cylindrical level bubble 100 or leave a very small gap. This space is used to position the cylindrical level bubble 100.

[0071] 6. The butt joint 60 is arranged on the backing plate 51 and extends a section away from the hinged side along the length direction.

[0072] 7. A feeding mechanism 70 is arranged on one side of the docking head 60. It can be translated within the range of the X-axis direction of the entire detection fixture 20. The device for realizing the translation preferably adopts a component that is morphologically the same as the aforementioned linear transport component 30 to carry its translation. A connecting portion 71 that can be temporarily engaged with or separated from the docking head 60 is provided in the feeding mechanism 70. The implementation method is that the connecting portion 71 and the docking head 60 are consistent in height in the Z-axis, and the translation of the feeding mechanism 70 is used to adjust the alignment of the connecting portion 71 and the docking head 60 in the X-axis direction. The movement of the docking head 60 in the conveying direction actively engages with or separates from the connecting portion 71. After engagement, the docking head 60 and the integrated material shifting and spacing mechanism 50 are driven by the feeding mechanism 70 to move in the X-axis direction, thereby realizing that the material shifting and spacing mechanism 50 conveys and spaces the cylindrical vials 100 for each column of the vial accommodating holes 22.

[0073] Refer to all attached Figure 1-Figure 11The whole working process is as follows: First, the feeding mechanism 70 is connected to the docking head 60, so that the material-dividing and spacing mechanism 50 is driven by the feeding mechanism 70 in the X-axis direction. In a row of vial accommodating holes 22 ready for loading, the lifting block 221 is pushed flush with the upper edge of the accommodating hole by air pressure. The material-dividing and spacing mechanism 50 stops at the appropriate position of the row ready for loading (usually starting from the first row on one side), and the spacing actuator 52 remains in an open state. Through the external feeding mechanism 01, a large number of cylindrical vials 100 are arranged and pushed along the backing plate 51 of the material-dividing and spacing mechanism 50. By using induction control, it is ensured that the backing surface 511 of the backing plate 51 is closely filled with cylindrical vials 100. Then, the spacing actuator 52 is shear-closed, starting from the hinge, and slowly approaches the backing plate 51. In this process, each cylindrical vial 100 in front along the conveying direction will push the adjacent cylindrical vial 100 to move backwards when entering the arc concave surface 523 due to the resistance of the scissor-like tangent movement of the arc concave surface 523, so that the closely adjacent cylindrical vials 100 are separated in turn until each cylindrical vial 100 is completely fitted with the corresponding arc concave surface 523. When the separation actuator 52 is completely closed, all cylindrical vials 100 are accurately positioned, that is, all cylindrical vials 100 are located on the corresponding lifting blocks 221. Then, the lifting blocks 221 are controlled to descend by air pressure, so that the cylindrical vials 100 are completely placed and enter the state to be inspected. Subsequently, the feeding mechanism 70 is translated to move the material-dividing mechanism 50 to the next row of vial accommodating holes 22, and the aforementioned actions are repeated until all vial accommodating holes 22 of the inspection fixture 20 are loaded. This design not only ensures the precise positioning of the cylindrical vial 100, but also greatly improves the loading efficiency, laying the foundation for subsequent inspection work. The whole process has a high degree of automation, reduces human intervention, and improves production efficiency and consistency.

[0074] During inspection, the visual inspection mechanism 40 moves to an appropriate position. Since the height of each column of cylindrical vials 100 is individually controllable, the lifting block 221 can be driven in different ways according to different inspection items to control the height of the cylindrical vials 100 in the relative columns, so as to make the inspection process more flexible and accurate. For example, when inspecting the position of the vials, all vials can be adjusted to the same height to ensure that the visual system can capture a consistent image; when inspecting the appearance or size of the vials, the height can be adjusted column by column so that each column of vials can enter the best observation position in turn;

[0075] The CCD camera 41 captures the image of the level bubble, while the light source assembly provides the necessary lighting to ensure image clarity. The fixed seat 42 and the transmission assembly 43 work together to achieve precise positioning of the visual inspection mechanism in the X-axis and Z-axis directions to accommodate levels of different heights and positions. The image data is transmitted to the relevant image processing and analysis system in real time to evaluate the quality of the level bubble. This process can be carried out simultaneously or sequentially on multiple inspection jigs as needed, further improving the inspection efficiency.

[0076] The detection system can evaluate multiple parameters, such as the size, shape, position accuracy of the bubble, transparency of the glass tube, clarity of the scale, etc. By adjusting the height of the lifting block 221, the performance of the level bubble at different tilt angles can also be tested to comprehensively evaluate its performance. After the test is completed, unqualified level bubbles can be marked or directly removed by the corresponding mechanism, while qualified level bubbles can enter the next process.

[0077] The whole detection process is highly automated, which not only ensures the consistency and reliability of detection, but also greatly improves production efficiency. This flexible height control mechanism, combined with a sophisticated visual inspection system, enables the equipment to meet the inspection needs of various types of cylindrical vials, providing a strong guarantee for product quality control.

[0078] In some embodiments, an adjustable structure that is raised by power control may be added to the arc concave surface 523 of the distance actuator 52. This structure usually uses a micro airbag or a flexible raised element driven by air pressure, which can be extended and retracted as needed. When the distance action is required, these raised structures can be expanded by controlling the air pressure, thereby increasing the degree of resistance to the cylindrical level bubble 100.

[0079] This design brings the following advantages:

[0080] Enhanced spacing effect: The raised structure can provide greater thrust, so that the cylindrical vial bubble 100 at the rear can obtain a greater displacement, effectively preventing adhesion or position deviation between the vials.

[0081] Flexible and adjustable: Through precise control of air pressure, the protrusion can be adjusted according to different types or sizes of vials to achieve the best spacing effect.

[0082] Reduced damage: Compared with fixed hard structures, the adjustable flexible protrusion can contact the bubble more gently, reducing the risk of damage caused by scratches or collisions.

[0083] Strong adaptability: This design enables the spacing mechanism to adapt to vials of different batches or models, thus improving the versatility of the equipment.

[0084] Improved efficiency: Through more effective spacing, the possibility of mutual interference between levels is reduced, thus speeding up the entire detection process.

[0085] In some embodiments, reference Figure 7 For the backing plate 51, a limiting top plate 512 is provided on the upper edge of the backing surface 511 to limit the excessive movement space of the cylindrical vial 100 in the X-axis and Z-axis directions. The limiting top plate 512 also has a baffle 513 extending downward, the inner side of the baffle 513 is parallel to the backing surface 511, and the spacing is slightly larger than the cylinder diameter of the cylindrical vial 100. In this way, the cylindrical vial 100 can be controlled to be in a neat row when being transported and arranged, which is beneficial for spacing positioning.

[0086] In some embodiments, based on the foregoing embodiments, Figure 8-Figure 9 , a belt conveyor line 80 is provided around the backing surface 511 of the backing plate 51. In this way, when the cylindrical vial 100 is transported, the cylindrical vial 100 entering the backing surface 511 can be actively pushed forward by the belt conveyor line 80, which can reduce the pushing force of the feeding mechanism 70 during transportation. The belt conveyor line 80 includes a conventional driving wheel (not shown), a driven wheel 81, a belt 82 (in Figure 8 The driving wheel is shown in a disassembled form for easy observation) and a driving motor 83, the power output shaft of the driving motor 83 is connected to the driving wheel in power.

[0087] In some embodiments, a guide member 72 is provided in the feeding mechanism 70 for guiding the cylindrical vial 100 into the backing plate 51 .

[0088] In some embodiments, in the feeding mechanism 70, the conveying body adopts the combination of rollers and conveyor belts in the drawings. At this time, a transition plate that can be connected with the arc-shaped position of the roller of the feeding mechanism 70 is provided on the side of the backing plate 51 facing the feeding mechanism 70. It is worth noting that if the conveying body is not in the shape of a roller arc, but in the shape of a plate, for example, no transition plate is required.

[0089] Cylindrical level bubble detection equipment operation process

[0090] 1. Preparation

[0091] Check and ensure that the rack 10, the inspection fixture 20, the linear transport assembly 30, the visual inspection mechanism 40 and other components are in place. Ensure that the feeding mechanism 70 is correctly connected to the docking head 60.

[0092] 2. Loading process

[0093] The feeding mechanism 70 guides and pushes a large number of cylindrical level bubbles 100 along the backing plate 51 of the material-shifting and spacing mechanism 50. By using induction control, it is ensured that the backing surface of the backing plate 51 is closely filled with cylindrical level bubbles 100.

[0094] 3. Distance positioning

[0095] The separation actuator 52 performs a scissor-like closing, and gradually approaches the backing plate 51 from the hinge.

[0096] Each cylindrical level bubble 100 enters the arc concave surface 523 in turn to achieve precise spacing.

[0097] In the improved version, the air pressure driven protrusion structure on the arc concave surface 523 can expand as needed to provide a more precise spacing effect.

[0098] 4. Load to the detection position

[0099] The lifting block 221 is pushed by air pressure to be flush with the upper edge of the receiving hole.

[0100] The separated cylindrical level bubble 100 is accurately positioned on the corresponding lifting block 221 .

[0101] The lifting block 221 is controlled to descend by air pressure, so that the cylindrical level bubble 100 is completely placed in place and enters the waiting state.

[0102] 5. Visual inspection

[0103] The visual inspection mechanism 40 moves to a suitable position.

[0104] Adjust the height of each column of cylindrical level bubbles 100 according to the requirements of the test project.

[0105] The CCD camera 41 captures the image of the vial, while the light source assembly provides the necessary illumination.

[0106] Image data is transmitted to relevant image processing and analysis systems in real time.

[0107] 6. Multi-parameter evaluation

[0108] The system evaluates multiple parameters such as bubble size, shape, position accuracy, transparency of the glass tube, clarity of the scale, etc.

[0109] By adjusting the height of the lifting block 221, the performance of the level bubble at different tilt angles is tested.

[0110] 7. Result processing

[0111] The system analyzes and classifies the test results.

[0112] Unqualified level bubbles are marked or removed directly.

[0113] Qualified bubbles enter the next process.

[0114] 8. Loop operation

[0115] The feeding mechanism 70 moves horizontally to move the material-dividing mechanism 50 to the next row of level bubble accommodating holes 22.

[0116] Repeat steps 2-7 until all the level bubble receiving holes 22 of the detection fixture 20 are detected.

[0117] If there are multiple inspection jigs, you can perform loading or unloading operations on other jigs while inspecting on one jig.

[0118] 9. Maintenance and calibration

[0119] Regularly check and clean all components, especially the visual system and spacing mechanism.

[0120] Calibrate vision systems and lifting mechanisms as needed to ensure long-term accuracy.

[0121] This operation process demonstrates the high degree of automation and flexibility of the equipment, which can realize efficient batch testing of cylindrical vials while ensuring the accuracy and comprehensiveness of the detection.

[0122] Although the present invention has been disclosed in conjunction with certain embodiments shown and described in detail, various modifications and improvements thereto will be readily apparent to those skilled in the art having benefit of the disclosure herein. Therefore, the spirit and scope of the present invention will not be limited by the foregoing examples, but will be understood in the broadest sense permitted by law.

[0123] All documents cited herein are hereby incorporated by reference in their entirety for all purposes.

Claims

1. A level bubble batch detection and analysis device based on machine vision, characterized in that: include: A frame (10) having a platform (11); A detection jig (20) is arranged above the platform (11) and has an upper flat surface (21), wherein the upper flat surface (21) is provided with a plurality of rows and columns of vial accommodating holes (22); A linear transport component (30) connected to the detection fixture (20) and used to drive the detection fixture (20) to move; A visual inspection mechanism (40) is arranged above the inspection fixture (20) and can move along the X-axis and Z-axis directions; The material shifting and spacing mechanism (50) comprises a backing plate (51) and a spacing actuator (52), wherein the spacing actuator (52) has a plurality of arc concave surfaces (523) corresponding to the hole wall of the vial accommodating hole (22); the backing plate (51) is a long strip component, the entire large surface of which is arranged on the upper flat surface (21), has a backing surface (511) and is parallel to the Y axis, covers the entire upper flat surface (21) in the Y axis direction, and is in close and slidable contact with the upper flat surface (21) at two edges in the Y axis direction; the spacing actuator (52) is a long strip component, has a plate surface (521) and a working surface (522), and its length is close to that of the backing plate (51), and the plate surface (511) .... The working surface (522) is provided with a plurality of arc concave surfaces (523), the concave surfaces are spaced in the same manner as the vial accommodating hole (22), the curvature of each arc concave surface (523) matches the cylindrical curvature surface of the cylindrical vial (100), and when the distance actuator is closed and the backing plate (51) is in a proper position, each arc concave surface is coaxial with the vial accommodating hole below it; the driving mechanism (53) is arranged between the backing plate (51) and the distance actuator (52), and is used to drive the distance actuator (52) to open and close relative to the backing plate (51); A feeding mechanism (70) for feeding a cylindrical vial (100) to the material shifting and spacing mechanism (50); Wherein, a lifting block (221) which can move up and down is provided in the vial accommodating hole (22) for adjusting the height of the cylindrical vial (100); When working, the material shifting and spacing mechanism (50) moves along the X-axis under the drive of the feeding mechanism (70); in a row of vial accommodating holes (22) to be loaded, the lifting block (221) is raised by air pressure to be flush with the upper edge of the accommodating hole; the material shifting and spacing mechanism (50) stops at an appropriate position in the row, and the spacing actuator (52) remains open; the external feeding mechanism (01) pushes the cylindrical vial (100) along the backing plate (51) to be arranged, and ensures that the backing surface (511) and the vial (100) are in close contact through induction; the spacing actuator (52) starts to close in a scissor-like manner from the hinge, and its The arc concave surface (523) gradually contacts the vial bubble; due to the tangential movement of the concave surface (523), the front vial bubble pushes the rear vial bubble to move, so that the distance between the vials is evenly distributed; after the spacing actuator (52) is completely closed, each vial bubble (100) accurately corresponds to the position of the lifting block (221); the lifting block (221) descends, and the vial bubble (100) completes the landing and enters the inspection state; the feeding mechanism (70) drives the material-shifting spacing mechanism (50) to move to the next row of vial accommodating holes (22), and the above process is repeated until the loading of the entire inspection fixture (20) is completed.

2. The machine vision-based level bubble batch detection and analysis equipment according to claim 1 is characterized in that: The bottom of the level bubble accommodating hole (22) of the detection fixture (20) is provided with mutually communicating air passages (222) for controlling the up and down movement of the lifting block (221).

3. The machine vision-based level bubble batch detection and analysis equipment according to claim 1 is characterized in that: The visual detection mechanism (40) comprises a light source component, a CCD camera (41) and a fixing seat (42) for mounting the light source component and the CCD camera.

4. The machine vision-based level bubble batch detection and analysis equipment according to claim 1 is characterized in that: The backing plate (51) of the material shifting and spacing mechanism (50) is in close and slidable contact with the upper flat surface (21).

5. The machine vision-based level bubble batch detection and analysis equipment according to claim 1 is characterized in that: An adjustable structure that is raised by power control is provided on the arc concave surface (523) of the spacing actuator (52).

6. The machine vision-based level bubble batch detection and analysis equipment according to claim 5 is characterized in that: The adjustable structure is a micro airbag or a flexible protruding element driven by air pressure.

7. The machine vision-based level bubble batch detection and analysis equipment according to claim 1 is characterized in that: It also comprises a docking joint (60), which is arranged at a section of the backing plate (51) extending away from the hinged side along the length direction and is used for temporarily engaging with or disengaging from the feeding mechanism (70).

8. A method for detecting cylindrical vials using the machine vision-based vial batch detection and analysis device according to any one of claims 1 to 7, comprising the following steps: S1 preparation stage: check and ensure that the frame (10), the detection fixture (20), the linear transport assembly (30), and the visual detection mechanism (40) are in place, and the feeding mechanism (70) is correctly connected to the docking head (60); control the lifting block (221) to rise to the same level with the upper edge of the level bubble receiving hole (22) through air pressure; S2: feeding process: a plurality of cylindrical vials (100) are conveyed to the backing plate (51) of the material shifting and spacing mechanism (50) by means of a feeding mechanism (70), and induction control is used to ensure that the backing surface of the backing plate (51) is closely filled with cylindrical vials (100); S3 distance positioning: driving the distance actuator (52) to gradually close from the hinge, so that the cylindrical level bubble (100) enters the arc concave surface (523) in sequence to achieve accurate distance; S4: Loading in place: Control the lifting block (221) to descend, so that the separated cylindrical level bubble (100) accurately falls into the level bubble accommodating hole (22), and enters the waiting state; S5: cyclic operation: the detection jig (20) or the feeding mechanism (70) is moved by the linear transport assembly (30), and the above steps are repeated until all the vial accommodating holes (22) are loaded; S6 Visual inspection preparation: moving the visual inspection mechanism (40) to a suitable position, and adjusting the height of each column of cylindrical level bubbles (100) according to inspection requirements; S7 performs detection: the CCD camera (41) of the visual detection mechanism (40) captures the image of the level bubble, and the light source assembly provides necessary lighting, and the image data is transmitted to the image processing and analysis system in real time; S8 Result processing: Classify the cylindrical vials (100) according to the evaluation results, mark or remove the unqualified ones, and guide the qualified ones to the next process.

9. The method for detecting a cylindrical vial according to claim 8, characterized in that: The inspection by the visual inspection mechanism (40) includes evaluating the size, shape, position accuracy of the bubble, transparency of the glass tube and clarity of the scale.

10. The method for detecting a cylindrical vial according to claim 8, characterized in that: When testing is performed on one testing jig (20), loading or unloading operations are performed on other testing jigs (20) at the same time.

11. The method for detecting a cylindrical vial according to claim 8, characterized in that: An adjustable protruding structure is provided on the arc concave surface (523) of the distance actuator (52), and the distance effect is adjusted by controlling the protruding degree of the protruding structure during the distance separation process.

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