Visual inspection mechanism for medical capsules

Abstract

The utility model relates to a visual inspection mechanism for medical capsules, which belongs to the technical field of medical production equipment and comprises a belt conveyor, a limit baffle, an inspection mounting frame and a visual inspection system, an extrusion plate capable of lifting up and down is mounted on the inspection mounting frame, and a plurality of extrusion toothed plates are arranged at the bottom of the extrusion plate. An avoiding distance for avoiding the limiting baffle is arranged between every two adjacent extrusion toothed plates, detection paper is arranged on one side of the belt conveyor below the extrusion plates, the detection paper is connected with a conveying device, and the detection paper is connected with a switching device for driving the section, corresponding to the extrusion toothed plates, of the detection paper to be switched between the vertical direction and the transverse direction. According to the utility model, a plurality of capsules to be detected in the same batch can be accurately extruded, and meanwhile, the design of the avoidance distance ensures that the extrusion structure and the limiting baffle plate do not interfere with each other; the detection paper is matched with the switching device, so that the setting angle of the detection section of the detection paper can be flexibly adjusted, a better collection visual angle is provided for a visual detection system, the image collection integrity is improved, and defect omission is reduced.

Description

Technical Field

[0001] This utility model relates to a medical capsule visual inspection mechanism, belonging to the field of medical production equipment technology. Background Technology

[0002] During the production of medical capsules, strict testing for leakage is required to ensure that the products meet medical use standards. Currently, common testing methods include manual inspection and machine vision inspection. Among these, machine vision inspection is widely used in capsule production lines due to its advantages such as high inspection efficiency and stable accuracy.

[0003] Existing medical capsule visual inspection institutions typically use conveyor belts to transport capsules, combined with visual inspection systems to acquire and analyze images of the capsules. However, in actual inspection processes, the following problems exist: First, multiple capsules cannot be accurately squeezed, easily leading to missed squeezing; second, there is a lack of a flexible adjustment mechanism for the viewing angle of the inspection paper during the inspection process, making the results detected by the visual inspection system prone to deviation. Utility Model Content

[0004] This invention provides a medical capsule visual inspection mechanism, which solves the problems existing in the background art.

[0005] This utility model relates to a medical capsule visual inspection mechanism, including a belt conveyor, multiple limit baffles fixed on the belt of the belt conveyor, an inspection mounting frame on the belt conveyor, a visual inspection system on the inspection mounting frame, an extrusion plate that can be raised and lowered on the inspection mounting frame, multiple extrusion toothed plates at the bottom of the extrusion plate, and an avoidance distance between adjacent extrusion toothed plates to allow for the avoidance of limit baffles. Inspection paper is provided on one side of the belt conveyor below the extrusion plate, the inspection paper is connected to a conveying device, and the inspection paper is connected to a switching device that drives the section of inspection paper corresponding to the extrusion toothed plates to switch vertically and horizontally.

[0006] As a preferred embodiment, the switching device includes a tilting frame plate, the lower end of which is hinged to a belt conveyor. A transverse guide roller is provided between the upper and lower parts of the two tilting frames. The upper end of the tilting frame plate is hinged to a tilting cylinder, and the other end of the tilting cylinder is hinged to a detection mounting frame. This structure, using a tilting cylinder to drive the tilting frame plate, enables automated switching of the detection paper angle. The operation is precise and responsive, requiring no manual intervention and improving the automation level of the detection process. The guide roller provides stable support and guidance for the detection paper, ensuring it remains flat during angle switching and guaranteeing the detection assistance effect.

[0007] As a preferred embodiment, a lifting cylinder is fixed on the testing mounting frame. The bottom piston rod of the lifting cylinder is fixedly connected to the extrusion plate, and the bottom of the extrusion plate has an upward bend. The upward bend design at the bottom of the extrusion plate eliminates the sharp edges of the plate, preventing scratches on the capsule surface during extrusion and ensuring the quality of the capsule product.

[0008] As a preferred embodiment, the conveying device includes a conveyor frame positioned below the belt conveyor. Multiple guide rollers and take-up rollers are rotatably mounted on the conveyor frame, and an unwind roller is located on the side of the conveyor frame near the switching device. This conveying device, through the cooperation of the unwind rollers, guide rollers, and take-up rollers, enables automatic unwinding, conveying, and rewinding of the test paper, allowing for timely replacement of the test paper area. Furthermore, positioning the conveyor frame below the belt conveyor makes efficient use of space, resulting in a more compact overall layout.

[0009] As a preferred embodiment, a limiting plate is provided above the belt of the belt conveyor near the switching device to limit the capsule head. The limiting plate can vertically limit the capsule head, preventing the capsule from tilting upwards due to compression during the detection process, and further improving the stability of capsule positioning.

[0010] As a preferred embodiment, a second limiting plate is provided above the belt of the belt conveyor on the side away from the switching device, above the tail of the limiting capsule. The second limiting plate and the first limiting plate work together to limit the vertical position of the capsule tail, preventing the capsule from tilting up during the testing process and ensuring the stability of the capsule posture.

[0011] As a preferred embodiment, a mounting arm is fixed to the top of the inspection mounting frame, and the vision inspection system is mounted on the mounting arm. The mounting arm provides a stable mounting platform for the vision inspection system.

[0012] This utility model has the following beneficial effects:

[0013] By setting up a liftable extrusion plate and extrusion tooth plate in conjunction with a limiting baffle, multiple capsules in the same batch to be inspected can be accurately extruded. At the same time, the avoidance spacing design ensures that the extrusion structure and the limiting baffle do not interfere with each other. The cooperation between the inspection paper and the switching device allows for flexible adjustment of the setting angle of the inspection section of the inspection paper, providing a better acquisition perspective for the visual inspection system, improving the integrity of image acquisition, and reducing defect omissions. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-person perspective;

[0015] Figure 2 This is a partial three-dimensional structural schematic diagram from a second perspective of the present invention;

[0016] Figure 3 This is a partial three-dimensional structural diagram of the present invention from a third-view perspective;

[0017] Figure 4 This is a schematic diagram of the top structure of this utility model;

[0018] Figure 5 This is a side view of the present invention.

[0019] In the diagram: 1. Belt conveyor; 2. Side guard plate; 3. Limiting baffle plate; 4. Take-up roller; 5. Tilting cylinder; 6. Extrusion toothed plate; 7. Lifting cylinder; 8. Mounting arm; 9. Limiting plate two; 10. Limiting plate one; 11. Extrusion plate; 12. Guide roller one; 13. Unwind roller; 14. Guide roller two; 15. Conveyor frame; 16. Tilting frame plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, as Figures 1 to 5 As shown, this utility model is a medical capsule visual inspection mechanism, including a belt conveyor 1. Multiple limiting baffles 3 are fixed on the belt of the belt conveyor 1. A detection mounting frame is provided on the belt conveyor 1. A visual inspection system is provided on the detection mounting frame. An extrusion plate 11 that can be raised and lowered is installed on the detection mounting frame. Multiple extrusion toothed plates 6 are provided at the bottom of the extrusion plate 11. An avoidance distance of the limiting baffles 3 is provided between adjacent extrusion toothed plates 6. A detection paper is provided on one side of the belt conveyor 1 below the extrusion plate 11. The detection paper is connected to a conveying device. The detection paper is also connected to a switching device that drives the corresponding section of the detection paper of the extrusion toothed plate 6 to switch vertically and horizontally.

[0022] Working process: Medical capsules to be tested are placed one by one between adjacent limit baffles 3 on the belt of conveyor 1, with the capsule heads facing the test paper. Conveyor 1 is started to transport the capsules to the testing area. When the capsules reach the testing area, conveyor 1 stops transporting. The extrusion plate 11 descends, causing the extrusion toothed plate 6 to insert between the adjacent limit baffles 3 and extrude the capsules. At this time, the switching device adjusts the test paper in the testing section to a vertical position. When the capsules are extruded, defective capsules will leak at the heat-sealed area at the capsule head. The leaked liquid will spray onto the testing section of the upright test paper, turning the liquid-contaminated test paper red. The rear extrusion plate 11 rises, and the switching device adjusts the detection paper in the detection section to a horizontal position. At this time, the vision inspection system acquires images of the detection paper in the detection section. If this section of the detection paper turns red, it indicates that there are unqualified products in this batch of capsules. The conveying device conveys the detection paper forward for a detection length, the switching device adjusts the detection paper in the detection section to a vertical position, and the belt conveyor 1 conveys this batch of capsules backward to the rejection mechanism, where all capsules in this batch are rejected. If this section of the detection paper does not turn red, this batch of capsules has no leakage and is a qualified product. At this time, the detection paper is not conveyed forward, the switching device adjusts the detection paper in the detection section to a vertical position, and it continues to be used.

[0023] Example 2, based on Example 1, includes a switching device comprising a flipping frame 16. The lower end of the flipping frame 16 is hinged to a belt conveyor 1. A transverse guide roller 12 is provided between the upper and lower parts of the two flipping frame 16. The upper end of the flipping frame 16 is hinged to a flipping cylinder 5, and the other end of the flipping cylinder 5 is hinged to a detection mounting frame. The belt conveyor 1 uses a stepper motor. During switching, the flipping cylinder 5 extends, causing the flipping frame 16 to rotate around its lower hinge axis, arranging the two guide rollers 12 horizontally, thus placing the detection paper in the transverse direction. After the visual inspection system acquires the image, the flipping cylinder 5 retracts, causing the flipping frame 16 to rotate in the opposite direction around its lower hinge axis, arranging the two guide rollers 12 vertically, thus placing the detection paper in the vertical direction.

[0024] A lifting cylinder 7 is fixed on the mounting frame. The bottom piston rod of the lifting cylinder 7 is fixedly connected to the extrusion plate 11. The bottom of the extrusion toothed plate 6 has an upward bend. The extension and retraction of the lifting cylinder 7 will drive the extrusion plate 11 to rise and fall. Side guards 2 are provided on both sides of the belt conveyor 1.

[0025] The conveying device includes a conveyor frame 15 positioned below the belt conveyor 1. Multiple guide rollers 14 and a take-up roller 4 are rotatably mounted on the conveyor frame 15. An unwind roller 13 is located on the side of the conveyor frame 15 near the switching device. Rolls of test paper are placed on the unwind roller 13, then the head passes over the guide rollers 14 near the unwind roller 13, passes over the top of the upper guide roller 12, then passes over the bottom of the lower guide roller 12, and after passing over the other guide rollers 14, is wound and fixed onto the take-up roller 4 for conveying. Both the take-up roller 4 and the unwind roller 13 are connected to drive motors.

[0026] A limiting plate 10 is provided above the belt of the belt conveyor 1 on the side near the switching device, above the head of the limiting capsule.

[0027] A limiting plate 29 is provided above the tail of the limiting capsule on the side of the belt above the belt of the belt conveyor 1 away from the switching device.

[0028] A mounting arm 8 is fixed to the top of the inspection mounting frame, and the vision inspection system is mounted on the mounting arm 8. The vision inspection system includes an industrial camera, a lighting lamp, and a processing unit. The industrial camera and the lighting lamp are both pointed at the inspection paper in the transverse inspection section. The industrial camera and the processing unit are also connected to a controller, which is connected to a communication module. The controller also controls the belt conveyor 1, the tilting cylinder 5, the lifting cylinder 7, the drive motor, and the rejection cylinder of the rejection mechanism. The rejection cylinder is connected to a rejection plate that pushes down the capsule. The vision inspection system is a mature existing technology and will not be described in detail here.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0030] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A medical capsule visual inspection mechanism, comprising a belt conveyor (1), a plurality of limiting baffles (3) are fixed on the belt of the belt conveyor (1), a detection mounting frame is arranged on the belt conveyor (1), and a visual inspection system is arranged on the detection mounting frame, characterized in that: The detection mounting frame is provided with an up-and-down movable extrusion plate (11), the bottom of the extrusion plate (11) is provided with a plurality of extrusion tooth plates (6), the adjacent extrusion tooth plates (6) are provided with an avoiding spacing for avoiding the limiting baffle (3), one side of a belt conveyor (1) below the extrusion plate (11) is provided with a detection paper, the detection paper is connected with a conveying device, and the detection paper is further connected with a switching device for switching the corresponding detection paper of the extrusion tooth plate (6) in the vertical direction and the horizontal direction.

2. The medical capsule vision inspection mechanism according to claim 1, characterized in that: The switching device comprises turnover frame plates (16), the lower ends of the turnover frame plates (16) are hingedly installed on the belt conveyor (1), the upper and lower parts of the two turnover frame plates (16) are both provided with a paper guide roller one (12) in the horizontal direction, the upper ends of the turnover frame plates (16) are hingedly installed on a turnover air cylinder (5), and the other end of the turnover air cylinder (5) is hingedly installed on the detection mounting frame.

3. The medical capsule vision inspection mechanism according to claim 1, characterized in that: The detection mounting frame is fixedly provided with a lifting air cylinder (7), the bottom piston rod end of the lifting air cylinder (7) is fixedly connected with the extrusion plate (11), and the bottom of the extrusion tooth plate (6) is provided with an upward bending.

4. The medical capsule vision inspection mechanism according to claim 1, characterized in that: The conveying device comprises a conveying frame (15) arranged below the belt conveyor (1), a plurality of paper guide roller twos (14) and a winding roller (4) are rotatably installed on the conveying frame (15), and the conveying frame (15) is provided with a winding-off roller (13) close to the switching device.

5. The medical capsule vision inspection mechanism according to claim 1, characterized in that: The belt conveyor (1) is provided with a limiting plate one (10) above the belt close to the switching device.

6. The medical capsule vision inspection mechanism according to claim 5, characterized in that: The belt conveyor (1) is provided with a limiting plate two (9) above the belt away from the switching device.

7. The medical capsule vision inspection mechanism according to claim 1, characterized in that: The top of the detection mounting frame is fixedly provided with a mounting arm rod (8), and a visual detection system is installed on the mounting arm rod (8).

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