Defect detection device for medicine packaging box and detection method thereof

Abstract

The invention discloses a defect detection device for a medicine packaging box and a detection method of the defect detection device, and belongs to the technical field of packaging box detection. The bottom of the packaging box can be turned up in the turning process through the bottoms in a turning frame and a blocking frame, and when the packaging box is in an inclined state, the packaging box can make contact with the upper positions in the turning frame and the blocking frame; when the two L-shaped turning frames rotate clockwise by 90 degrees, the two L-shaped turning frames rotate clockwise by 90 degrees until the tops of the two L-shaped turning frames penetrate through gaps between adjacent conveying roller shafts, at the moment, the packaging box synchronously rotates clockwise by 90 degrees, and the bottom of the packaging box is turned to the right front of the two L-shaped turning frames, so that the packaging box is turned over while the two turning frames and a blocking frame horizontally move; the position of the packaging box is not changed after the packaging box is turned over, the bottom detection head in the groove in the blocking frame is located in front of the packaging box for detection, and therefore the bottom of the packaging box is detected in the mode that the packaging box is turned over in situ, manual auxiliary interference is not needed, the operation process is simplified, the detection efficiency is improved, and meanwhile the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of packaging box inspection technology, specifically to a defect detection device and method for pharmaceutical packaging boxes. Background Technology

[0002] As special commodities, pharmaceutical packaging not only fulfills the basic functions of protecting drugs, preventing contamination, and extending shelf life, but is also directly related to medication safety, product traceability, and market supervision. If key information such as the drug name, specifications, batch number, and expiration date on the packaging is misprinted, missing, or unclear, it may lead to medication errors. Physical defects such as poor sealing, creases, or damage may cause drugs to become damp, contaminated, or ineffective, posing a threat to patients' health. At the same time, pharmaceutical companies face the dual pressures of large-scale production and quality traceability, which places higher demands on the efficiency, accuracy, and stability of packaging defect detection.

[0003] Currently, defect detection in pharmaceutical packaging boxes mostly relies on optical equipment, using submillimeter waves, infrared light, visible light, or ultraviolet light to analyze defects. However, existing detection equipment has poor adaptability; most devices are designed for packaging boxes of specific specifications and materials, making it difficult to inspect pharmaceutical packaging boxes of different sizes. This necessitates line changes and adjustments, as well as manual assistance in sorting defective products. During the automated conveyor system for inspection, the bottom of the packaging box adheres to the conveyor belt, making it difficult for the inspection agency to detect the bottom state of the box in a timely manner. This requires manual assistance to flip the box over and re-feed it into the inspection equipment for repeated inspection, making the operation process cumbersome, further reducing inspection efficiency and increasing production costs.

[0004] Based on this, the present invention designs a defect detection device and detection method for pharmaceutical packaging boxes to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a defect detection device and method for pharmaceutical packaging boxes, in order to solve the problems mentioned in the background art, such as the need for manual assistance in sorting defective products, the difficulty for the detection agency to detect the state of the bottom of the packaging box in a timely manner, the need for manual assistance in turning the packaging box over and sending it back into the detection equipment for repeated detection, and the cumbersome operation process.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A defect detection device for pharmaceutical packaging boxes includes a detection frame with a first fixed frame and a second fixed frame fixed on it. An optical detection component is installed through the first fixed frame. A control panel is installed on one side of the front of the detection frame. An automated conveying component is provided inside the detection frame. One end of the automated conveying component is connected to a drive mechanism, which is fixed at the lower part of the detection frame. A sliding seat is provided below the automated conveying component, and a support seat is attached to the bottom of the sliding seat. The support seat is fixed on the front and rear sides of the detection frame. The drive component is installed through the sliding seat. A horizontal plate is fixedly connected to the top of the drive component. Flipping components are fixed on both sides of the horizontal plate. A bottom detection component is provided between the two flipping components. A top rod is provided on one side below the bottom detection component.

[0008] As a further embodiment of the present invention, slide rails are respectively provided on both sides of the support base, and slide plates are slidably connected in the slide rails. The two slide plates are fixedly connected to the bottom of the sliding base. A groove is provided in the middle of the support base, and an electric hydraulic rod is installed in the groove. A slider is fixed to one end of the electric hydraulic rod, and the slider is fixed to one side of the bottom of the sliding base.

[0009] As a further embodiment of the present invention, ear plates are fixed on both sides of the bottom of the cross plate, and a sliding rod is slidably passed through the middle of the ear plate, with both ends of the sliding rod fixed to both sides of the inner wall of the sliding seat.

[0010] As a further embodiment of the present invention, the optical detection assembly includes an electric push rod, which is fixedly mounted on a first fixed frame. A deflection motor is fixed to the bottom end of the electric push rod, and a connecting frame is fixed to the output shaft of the deflection motor. The connecting frame has an inverted L-shaped design, and a circumferential detection head is installed at the lowest end. A top detection head is installed on the connecting frame at a position below the output shaft of the deflection motor. Guide rods are fixed to both sides of the body of the deflection motor, and the guide rods slide through the top of the first fixed frame.

[0011] As a further embodiment of the present invention, the automated conveying assembly includes a plurality of conveying rollers, one end of which is fixed with a guide roller, the ends of which are far apart from each other are rotatably connected to the detection frame via bushings, the outermost end of the conveying roller is connected to a transmission component in the drive mechanism, the other end of the conveying roller is fixed with a transmission wheel, a belt is sleeved between two adjacent transmission wheels, and a rejection conveyor belt is sleeved on the plurality of guide rollers.

[0012] As a further embodiment of the present invention, the driving assembly includes a driving motor, which is mounted on the back of the sliding seat. The output shaft of the driving motor is fixed with a lead screw, and the two ends of the lead screw are rotatably connected to the sliding seat through bushings. A nut is threaded onto the external thread of the lead screw, and the nut is fixed to the bottom of the cross plate.

[0013] As a further embodiment of the present invention, the tilting assembly includes a tilting frame, which is L-shaped and extends through the space between two adjacent conveyor rollers at the top. The right-angle end of the tilting frame is rotatably connected to a hinge seat via a pin, and the hinge seat is fixed to a horizontal plate. Support rods are rotatably connected to the middle positions of both sides of the tilting frame via pins, and the other ends of the two support rods are rotatably connected to the side of the sliding seat away from the horizontal plate via pins.

[0014] As a further embodiment of the present invention, the bottom detection assembly includes a baffle, which is L-shaped and extends through the space between two adjacent conveyor rollers. An isolation groove is provided at the lower part of the baffle, and a bottom detection head is installed in the isolation groove. A support shaft is rotatably inserted through the right-angle end of the baffle. Torsion springs are respectively sleeved on both sides of the support shaft. The two ends of the torsion springs are respectively fixedly connected to one end of the baffle and the opposite side of the support shaft. A stop block is fixed at both ends of the support shaft. The stop block is U-shaped and its bottom is fixed to a horizontal plate. The bottom end of the top rod is fixed to the bottom of the inner wall of the stop block, and the top end of the top rod overlaps one side of the bottom of the baffle.

[0015] A method for detecting defects in pharmaceutical packaging boxes, the method comprising the following steps:

[0016] The packaging boxes of medicines to be inspected are fed into the automated conveying assembly in the inspection frame from the front end of the production line. After the drive mechanism is started, the outermost conveying roller shaft is driven to rotate through the transmission component. Adjacent conveying roller shafts are synchronized through the transmission wheel and belt, thereby driving the entire conveying roller shaft group to rotate at a uniform speed and smoothly convey the packaging box to the right. When the packaging box is conveyed directly below the optical inspection assembly, the conveying roller shaft stops rotating, and the electric push rod in the optical inspection assembly is started, pushing the deflection motor and connecting frame to move downward until the distance between the top inspection head and the top of the packaging box reaches the preset optimal inspection value. During this process, the guide rods on both sides of the deflection motor slide along the first fixed frame to ensure the stability of the connecting frame movement and prevent the top inspection head from deviating. The top inspection head is started to perform a comprehensive scan inspection of the top of the packaging box. During the top inspection, the deflection motor is started, driving the inverted L-shaped connecting frame to rotate at a uniform speed around the output shaft. The circumferential inspection head at the lowest end of the connecting frame rotates synchronously, performing a 360-degree scan of the four sides of the packaging box without blind spots, collecting information from the sides of the packaging box, and transmitting it in real time to the external control system for defect identification.

[0017] After the circumferential and top inspections are completed, the conveyor rollers start again, transporting the packaging box above the box-flipping assembly and the bottom inspection assembly. Then the conveyor rollers stop. At this time, the electric hydraulic rod on the support base starts, causing the slider to move the sliding seat along the slide rails on both sides of the support base through the bottom slide plate until the box-flipping assembly and the bottom inspection assembly are precisely aligned with the bottom of the packaging box. When the bottom of the packaging box is flipped up, the drive motor in the drive assembly starts, driving the lead screw to rotate. The nut threaded to the lead screw drives the horizontal plate to slide in the sliding seat. The ear plate at the bottom of the horizontal plate slides along the slide rod to ensure the stability of the horizontal movement. During the movement of the horizontal plate, it will drive the two box-flipping assemblies and the bottom inspection assembly in the middle to move forward. At the same time, the support rod in the box-flipping assembly supports one side of the flipping frame, so that the right-angle end of the flipping frame rotates clockwise in the hinge seat through the pin.

[0018] During this process, the bottom of the flipping frame and the baffle can flip up the bottom of the packaging box during the flipping process. When the packaging box is tilted, it can contact the upper position of the flipping frame and the baffle to prevent the packaging box from tipping over completely. As the horizontal plate drives the two flipping frames and the baffle to continue moving forward, the flipping frame can rotate 90 degrees clockwise until the top of the two L-shaped flipping frames passes through the gap between the adjacent conveyor rollers and is located at the bottom. Under the action of the weight of the packaging box, the right-angle end of the baffle can rotate around the support shaft, so that the flipping frame and the baffle can move synchronously. At this time, the packaging box rotates 90 degrees clockwise synchronously, flipping its bottom to the front. Because the two flipping frames and the baffle flip the packaging box while moving horizontally, it ensures that the position of the packaging box does not change after flipping. It can stably convey the packaging box while performing normal inspection. The bottom detection head in the groove of the baffle is located in front of the packaging box, and there is no structural obstruction or interference between the bottom detection head and the packaging box. Therefore, the bottom of the packaging box is inspected by flipping it in place without human intervention.

[0019] When resetting the box-flipping assembly and the bottom detection assembly, the drive motor starts and drives the lead screw to rotate in the opposite direction. This causes the external nut to move the box-flipping assembly and the bottom detection assembly backward through the cross plate. During the movement of the flipping frame, the support rod connected to one side is pulled, causing the support rod to deflect. At the same time, the right-angle end of the flipping frame rotates clockwise around the hinge seat through the pin until the flipping frame returns to its initial position. When the packaging box is separated from the baffle, the force of the torsion spring causes the right-angle end of the baffle to rotate clockwise outside the support shaft. When the bottom of the baffle contacts the top rod, it can provide support and limit the baffle, preventing it from continuing to flip and keeping it in the same position as the flipping frame to facilitate subsequent box-flipping operations.

[0020] After the bottom inspection head performs a final inspection of the packaging box, the control panel summarizes the inspection data from the top, circumferential, and bottom inspection heads and compares it with the preset pass / fail standards to determine whether the packaging box is a qualified or defective product. At this time, the electric hydraulic rod is activated, pulling the slider to slide along the groove, which in turn drives the sliding seat to move horizontally along the slide rails on both sides of the support seat via the bottom slide plate. The T-shaped design of the slide rails and slide plate improves the stability of the horizontal movement of the box-flipping assembly and the bottom inspection assembly. As the box-flipping assembly moves forward, it can push defective products forward until the packaging box moves onto the rejection conveyor belt and is removed from the conveyor roller. Since one end of the conveyor roller is fixed to the guide roller, the conveyor roller drives the rejection conveyor belt through the guide roller to remove defective products. Qualified products are then conveyed normally by the conveyor roller, achieving the purpose of automated sorting of qualified and defective products.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the activation of the drive assembly, causes the two box-flipping assemblies and the central bottom detection assembly to move forward during the movement of the horizontal plate. Simultaneously, the support rod in the box-flipping assembly supports one side of the flipping frame, causing the right-angle end of the flipping frame to rotate clockwise in the hinge seat via a pin. During the flipping process, the bottom of the flipping frame and the baffle can lift the bottom of the packaging box. When the packaging box is tilted, it can contact the upper position within the flipping frame and the baffle, preventing the packaging box from tipping over completely. As the horizontal plate continues to move the two flipping frames and the baffle forward, the flipping frame can rotate 90 degrees clockwise until the tops of the two L-shaped flipping frames pass through the gap between adjacent conveyor rollers and are positioned below. Under the weight of the packaging box, the right-angled end of the frame can rotate around the support shaft, allowing the flipping frame and the baffle to move synchronously. At this time, the packaging box rotates 90 degrees clockwise, flipping its bottom to the front. Because the two flipping frames and the baffle flip the packaging box while moving horizontally, it ensures that the position of the packaging box does not change after flipping. This allows for stable transportation of the packaging box while performing normal inspection. The bottom inspection head in the groove of the baffle is located in front of the packaging box, and there is no structural obstruction or interference between the bottom inspection head and the packaging box. Therefore, by flipping the packaging box in place, the bottom of the packaging box can be inspected without human intervention, simplifying the operation process, improving inspection efficiency, and reducing production costs. 2. This invention uses an electric push rod to move the deflection motor and connecting frame downwards until the distance between the top detection head and the top of the packaging box reaches the preset optimal detection value. During this process, the guide rods on both sides of the deflection motor slide along the first fixed frame to ensure the stability of the connecting frame movement and prevent the top detection head from shifting. The top detection head starts to perform a comprehensive scan of the top of the packaging box. During the top detection, the deflection motor starts, driving the inverted L-shaped connecting frame to rotate at a constant speed around the output shaft. The circumferential detection head at the lowest end of the connecting frame rotates synchronously, performing a 360-degree scan of the four sides of the packaging box without blind spots. Only one rotation of the L-shaped connecting frame is needed to achieve the purpose of detecting all five sides of the packaging box, greatly improving detection efficiency. Moreover, the height of the top detection head and the circumferential detection head in the L-shaped connecting frame is adjustable to facilitate rapid detection of different types of packaging boxes. 3. After the bottom detection head performs a final inspection of the packaging box, the control panel summarizes the inspection data from the top, circumferential, and bottom detection heads and compares it with the preset pass / fail standards to determine whether the packaging box is a qualified or defective product. At this time, the electric hydraulic rod is activated, pulling the slider to slide along the groove, which in turn drives the sliding seat to move horizontally along the slide rails on both sides of the support seat via the bottom slide plate. The T-shaped design of the slide rails and slide plate improves the stability of the horizontal movement of the box-flipping assembly and the bottom detection assembly. During the forward movement of the box-flipping assembly, defective products can be pushed forward until the packaging box moves onto the rejection conveyor belt and is separated from the conveyor roller. Since one end of the conveyor roller is fixed to the guide roller, the conveyor roller drives the rejection conveyor belt through the guide roller to remove defective products. Qualified products are then normally conveyed by the conveyor roller, achieving the purpose of automated sorting of qualified or defective products without human intervention, thus improving the automation level of the inspection work. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection between the detection frame and the automated conveying assembly of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the optical detection component of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the automated conveying component of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection between the support base and the sliding base of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the box-flipping assembly of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the driving component of the present invention;

[0030] Figure 8 This is a schematic diagram of the bottom detection component of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Inspection frame; 2. First fixed frame; 3. Second fixed frame; 4. Control panel; 5. Optical inspection assembly; 501. Electric push rod; 502. Deflection motor; 503. Connecting frame; 504. Top inspection head; 505. Circumferential inspection head; 506. Guide rod; 6. Drive mechanism; 7. Automated conveying assembly; 701. Conveyor roller; 702. Guide roller; 703. Drive wheel; 704. Belt; 705. Rejection conveyor belt; 8. Sliding seat; 9. Support seat; 10. Slide rail ; 11. Groove; 12. Electro-hydraulic rod; 13. Slider; 14. Slide plate; 15. Drive assembly; 151. Drive motor; 152. Nut; 153. Lead screw; 16. Horizontal plate; 17. Ear plate; 18. Slide rod; 19. Flipping box assembly; 191. Flipping frame; 192. Support rod; 193. Hinge seat; 20. Bottom detection assembly; 201. Stop; 202. Isolation groove; 203. Bottom detection head; 204. Support shaft; 205. Stop block; 206. Torsion spring; 21. Top rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-8 The present invention provides a technical solution:

[0035] A defect detection device for pharmaceutical packaging boxes includes a detection frame 1, on which a first fixed frame 2 and a second fixed frame 3 are fixed. An optical detection component 5 is installed through the first fixed frame 2. The optical detection component 5 includes an electric push rod 501, which is fixed through the first fixed frame 2. A deflection motor 502 is fixed to the bottom end of the electric push rod 501. A connecting frame 503 is fixed to the output shaft of the deflection motor 502. The connecting frame 503 has an inverted L-shaped design, and a circumferential detection head 505 is installed at its lowest end. A top detection head 504 is installed on the connecting frame 503 at a position below the output shaft of the deflection motor 502. Guide rods 506 are fixed on both sides of the body of the deflection motor 502, and the guide rods 506 slide through the top of the first fixed frame 2.

[0036] The electric push rod 501 is activated, pushing the deflection motor 502 and the connecting frame 503 downward until the distance between the top detection head 504 and the top of the packaging box reaches the preset optimal detection value. During this process, the guide rods 506 on both sides of the deflection motor 502 slide along the first fixed frame 2 to ensure the stability of the movement of the connecting frame 503 and prevent the top detection head 504 from deviating. The deflection motor 502 is activated, driving the inverted L-shaped connecting frame 503 to rotate at a constant speed around the output shaft. The circumferential detection head 505 at the lowest end of the connecting frame 503 rotates synchronously, performing a 360-degree scan of the four sides of the packaging box without blind spots, collecting information from the sides of the packaging box, and transmitting it in real time to the external control system for defect identification.

[0037] As a further embodiment of the present invention, a control panel 4 is installed on one side of the front of the testing frame 1, and an automated conveying component 7 is provided inside the testing frame 1. One end of the automated conveying component 7 is connected to a drive mechanism 6, and the drive mechanism 6 is fixed at the lower position inside the testing frame 1.

[0038] The automated conveying assembly 7 includes several conveying rollers 701. One end of each conveying roller 701 is fixed with a guide roller 702. The ends of the conveying roller 701 and the guide roller 702 that are far apart from each other are rotatably connected to the inspection frame 1 through bushings. The outermost end of the conveying roller 701 is connected to the transmission component in the drive mechanism 6. The other end of each conveying roller 701 is fixed with a transmission wheel 703. A belt 704 is sleeved between two adjacent transmission wheels 703. A rejection conveyor belt 705 is sleeved around each of the guide rollers 702.

[0039] After the drive mechanism 6 is started, it drives the outermost conveyor roller 701 to rotate through the transmission component. The adjacent conveyor rollers 701 are synchronized through the transmission wheel 703 and belt 704, thereby driving the entire conveyor roller group 701 to rotate at a uniform speed and smoothly convey the packaging box to the right.

[0040] As the box-flipping assembly 19 moves forward, it pushes defective products forward until the packaging box moves onto the rejection conveyor belt 705 and detaches from the conveyor roller 701. Since one end of the conveyor roller 701 is fixed to the guide roller 702, the conveyor roller 701 drives the rejection conveyor belt 705 through the guide roller 702 to remove defective products. Qualified products are then conveyed normally by the conveyor roller 701, achieving the purpose of automated sorting of qualified or defective products. With the setting of the second fixed frame 3, the packaging boxes on the rejection conveyor belt 705 during the inspection process can be viewed from the opening in front of the second fixed frame 3, so that the packaging boxes can be directly picked up and put down from the opening in front of the second fixed frame 3.

[0041] As a further embodiment of the present invention, a sliding seat 8 is provided below the automated conveying assembly 7, and a support seat 9 is attached to the bottom of the sliding seat 8. The support seat 9 is fixed to the front and rear sides inside the detection frame 1. Slide tracks 10 are respectively opened on both sides of the support seat 9, and slide plates 14 are slidably connected in the slide tracks 10. The two slide plates 14 are fixedly connected to the bottom of the sliding seat 8. A groove 11 is opened in the middle of the support seat 9, and an electric hydraulic rod 12 is installed in the groove 11. A slider 13 is fixed to one end of the electric hydraulic rod 12, and the slider 13 is fixed to one side of the bottom of the sliding seat 8. When the electric hydraulic rod 12 is activated, it pulls the slider 13 to slide along the groove 11, thereby causing the sliding seat 8 to move horizontally along the slide tracks 10 on both sides of the support seat 9 via the slide plates 14 at the bottom.

[0042] A drive assembly 15 is installed through the sliding seat 8. A horizontal plate 16 is fixedly connected to the top of the drive assembly 15. Ear plates 17 are fixed to both sides of the bottom of the horizontal plate 16. A slide rod 18 slides through the middle of the ear plate 17. The two ends of the slide rod 18 are fixed to both sides of the inner wall of the sliding seat 8. The ear plate 17 is limited by the slide rod 18, thereby improving the stability of the horizontal plate 16 driving the upper part to move.

[0043] The drive assembly 15 includes a drive motor 151, which is mounted on the back of the sliding seat 8. A lead screw 153 is fixed to the output shaft of the drive motor 151. Both ends of the lead screw 153 are rotatably connected to the sliding seat 8 via bushings, and a nut 152 is threaded onto the lead screw 153. The nut 152 is fixed to the bottom of the horizontal plate 16. When the drive motor 151 operates, it drives the lead screw 153 to rotate. The nut 152, threaded onto the lead screw 153, causes the horizontal plate 16 to slide within the sliding seat 8. The ear plate 17 at the bottom of the horizontal plate 16 slides along the slide rod 18, ensuring the stability of horizontal movement.

[0044] As a further embodiment of the present invention, two flip-box assemblies 19 are fixed on both sides of the horizontal plate 16. During the movement of the horizontal plate 16, the two flip-box assemblies 19 will move forward, which facilitates the adjustment of the horizontal position of the flip-box assemblies 19.

[0045] The box-flipping assembly 19 includes a flipping frame 191, which is L-shaped and has its top extending between two adjacent conveyor rollers 701. The right-angle end of the flipping frame 191 is rotatably connected to a hinge seat 193 via a pin. The hinge seat 193 is fixed on the horizontal plate 16. Support rods 192 are rotatably connected to the middle of both sides of the flipping frame 191 via pins. The other ends of the two support rods 192 are rotatably connected to the side of the sliding seat 8 away from the horizontal plate 16 via pins.

[0046] During the flipping process, the bottom of the flipping frame 191 and the baffle 201 can flip up the bottom of the packaging box. When the packaging box is tilted, it can contact the upper part of the flipping frame 191 and the baffle 201 to prevent the packaging box from tipping over completely. As the horizontal plate 16 drives the two flipping frames 191 and the baffle 201 to continue moving forward, the flipping frame 191 can rotate 90 degrees clockwise until the top of the two L-shaped flipping frames 191 passes through the gap between the adjacent conveyor rollers 701. Under the action of the weight of the packaging box, the right-angle end of the baffle 201 can rotate around the support shaft 204, so that the flipping frame 191 and the baffle 201 can move synchronously. At this time, the packaging box rotates 90 degrees clockwise synchronously, flipping its bottom to face forward. Because the two flipping frames 191 and the baffle 201 flip the packaging box while moving horizontally, it ensures that the position of the packaging box does not change after flipping, and can stably convey the packaging box while performing normal inspection.

[0047] As a further embodiment of the present invention, a bottom detection component 20 is provided between the two flipping assemblies 19. A top rod 21 is provided on one side below the bottom detection component 20. The bottom detection component 20 includes a baffle 201, which is L-shaped and its top extends between two adjacent conveyor rollers 701. An isolation groove 202 is provided at the lower position inside the baffle 201, and a bottom detection head 203 is snapped into the isolation groove 202. A support shaft 204 is rotatably inserted through the right-angle end of the baffle 201. Torsion springs 206 are respectively sleeved on both sides of the outside of the support shaft 204. The two ends of the torsion springs 206 are respectively fixedly connected to one end of the baffle 201 and the opposite side of the support shaft 204. A stop block 205 is fixed at both ends of the support shaft 204. The stop block 205 is U-shaped and its bottom is fixed to the horizontal plate 16. The bottom end of the top rod 21 is fixed to the bottom of the inner wall of the stop block 205, and the top end of the top rod 21 overlaps the bottom of the baffle 201.

[0048] When the packaging box detaches from the baffle 201, the force of the torsion spring 206 causes the right-angle end of the baffle 201 to rotate clockwise outside the support shaft 204. When the bottom of the baffle 201 contacts the top rod 21, it can play a supporting and limiting role, preventing the baffle 201 from continuing to flip and keeping it in the same position as the flipping frame 191, so as to facilitate the subsequent box flipping work.

[0049] A method for detecting defects in pharmaceutical packaging boxes, the method comprising the following steps:

[0050] The packaging box of the medicine to be tested is fed into the automated conveying assembly 7 in the testing frame 1 from the front end of the production line. After the drive mechanism 6 is started, it drives the outermost conveying roller 701 to rotate through the transmission component. The adjacent conveying rollers 701 are synchronized through the transmission wheel 703 and belt 704, thereby driving the entire conveying roller 701 group to rotate at a uniform speed and smoothly convey the packaging box to the right.

[0051] When the packaging box is conveyed directly below the optical inspection component 5, the conveyor roller 701 stops operating, and the electric push rod 501 in the optical inspection component 5 starts, pushing the deflection motor 502 and the connecting frame 503 downward until the distance between the top inspection head 504 and the top of the packaging box reaches the preset optimal inspection value. During this process, the guide rods 506 on both sides of the deflection motor 502 slide along the first fixed frame 2 to ensure the stability of the connecting frame 503 and prevent the top inspection head 504 from deviating. The top inspection head 504 starts and performs a full scan inspection of the top of the packaging box. During the top inspection, the deflection motor 502 starts and drives the inverted L-shaped connecting frame 503 to rotate at a constant speed around the output shaft. The circumferential inspection head 505 at the lowest end of the connecting frame 503 rotates synchronously, performing a 360-degree scan of the four sides of the packaging box without blind spots, collecting information from the sides of the packaging box, and transmitting it in real time to the external control system for defect identification.

[0052] After the circumferential and top inspections are completed, the conveyor roller 701 starts again, conveying the packaging box above the box-flipping assembly 19 and the bottom inspection assembly 20. Then the conveyor roller 701 stops. At this time, the electric hydraulic rod 12 on the support base 9 starts, causing the slider 13 to drive the sliding seat 8 to move horizontally along the slide rails 10 on both sides of the support base 9 through the bottom slide plate 14 until the box-flipping assembly 19 and the bottom inspection assembly 20 are precisely aligned with the bottom position of the packaging box.

[0053] When the bottom of the packaging box is flipped up, the drive motor 151 in the drive assembly 15 starts, driving the lead screw 153 to rotate. The nut 152, which is threaded to the lead screw 153, drives the horizontal plate 16 to slide in the sliding seat 8. The ear plate 17 at the bottom of the horizontal plate 16 slides along the slide rod 18 to ensure the stability of horizontal movement. During the movement of the horizontal plate 16, it will drive the two box-flipping assemblies 19 and the bottom detection assembly 20 in the middle to move forward. At the same time, the support rod 192 in the box-flipping assembly 19 supports one side of the flip frame 191, so that the right-angle end of the flip frame 191 rotates clockwise in the hinge seat 193 through the pin.

[0054] During this process, the bottom of the flipping frame 191 and the baffle 201 can flip up the bottom of the packaging box during the flipping process. When the packaging box is tilted, it can contact the upper position inside the flipping frame 191 and the baffle 201 to prevent the packaging box from tipping over completely. As the horizontal plate 16 drives the two flipping frames 191 and the baffle 201 to continue moving forward, the flipping frame 191 can rotate 90 degrees clockwise until the top of the two L-shaped flipping frames 191 passes through the gap between the adjacent conveyor roller shafts 701 and is located in the lower position. Under the action of the weight of the packaging box, the right-angle end of the baffle 201 can rotate around the support shaft 204, so that the flipping frame 191 and the baffle 201 can move synchronously. At this time, the packaging box rotates 90 degrees clockwise synchronously, flipping its bottom to the front. Because the two flippers 191 and the baffle 201 flip the packaging box while moving horizontally, ensuring that the position of the packaging box does not change after flipping, the packaging box can be stably transported and inspected normally. The bottom detection head 203 in the groove 11 of the baffle 201 is located in front of the packaging box, and there is no structural obstruction or interference between the bottom detection head 203 and the packaging box. Therefore, the bottom of the packaging box can be inspected by flipping it in place without human intervention.

[0055] When resetting the box-flipping assembly 19 and the bottom detection assembly 20, the drive motor 151 starts and drives the lead screw 153 to rotate in the opposite direction, causing the external nut 152 to move the box-flipping assembly 19 and the bottom detection assembly 20 backward through the cross plate 16. During the movement of the flipping frame 191, it pulls the support rod 192 connected to one side, causing the support rod 192 to deflect. At the same time, the right-angle end of the flipping frame 191 rotates clockwise around the hinge seat 193 through the pin until the flipping frame 191 returns to the initial position. When the packaging box is separated from the baffle 201, the force of the torsion spring 206 drives the right-angle end of the baffle 201 to rotate clockwise outside the support shaft 204. When the bottom of the baffle 201 contacts the top rod 21, it can play a supporting and limiting role, preventing the baffle 201 from continuing to flip and keeping it in the same position as the flipping frame 191, so as to facilitate subsequent box-flipping work.

[0056] After the bottom inspection head 203 performs a final inspection of the packaging box, the control panel 4 summarizes the inspection data from the top inspection head 504, the circumferential inspection head 505, and the bottom inspection head 203, compares it with the preset pass / fail standards, and determines whether the packaging box is a qualified or defective product. At this time, the electric hydraulic rod 12 is activated, pulling the slider 13 to slide along the groove 11, which in turn drives the sliding seat 8 to move horizontally along the slide rails 10 on both sides of the support seat 9 via the bottom slide plate 14. The T-shaped design of the slide rails 10 and the slide plate 14 improves the stability of the horizontal movement of the box-flipping assembly 19 and the bottom inspection assembly 20. During its forward movement, the box-flipping assembly 19 pushes defective products forward until the packaging box moves onto the rejection conveyor belt 705 and detaches from the conveyor roller 701. Since one end of the conveyor roller 701 is fixed to the guide roller 702, the conveyor roller 701 drives the rejection conveyor belt 705 through the guide roller 702 to reject defective products. Qualified products are then conveyed normally by the conveyor roller 701, achieving the purpose of automated sorting of qualified or defective products.

Claims

1. A defect detection device for pharmaceutical packaging boxes, comprising a detection frame (1), characterized in that: The inspection frame (1) is fixed with a first fixed frame (2) and a second fixed frame (3). An optical inspection component (5) is installed through the first fixed frame (2). A control panel (4) is installed on one side of the front of the inspection frame (1). An automated conveying component (7) is provided inside the inspection frame (1). A drive mechanism (6) is connected to one end of the automated conveying component (7). The drive mechanism (6) is fixed at the lower position inside the inspection frame (1). A sliding seat (8) is provided below the automated conveying component (7). A support seat (9) is attached to the bottom of the sliding seat (8). The support seat (9) is fixed on the front and rear sides inside the inspection frame (1). A drive component (15) is installed through the sliding seat (8). A horizontal plate (16) is fixedly connected to the top of the drive component (15). Flipping components (19) are fixed on both sides of the horizontal plate (16). A bottom inspection component (20) is provided between the two flipping components (19). A top rod (21) is provided on one side below the bottom inspection component (20).

2. The defect detection device for pharmaceutical packaging boxes according to claim 1, characterized in that: The support base (9) has slides (10) on both sides, and slide plates (14) are slidably connected in the slides (10). The two slide plates (14) are fixedly connected to the bottom of the sliding seat (8). The support base (9) has a groove (11) in the middle, and an electric hydraulic rod (12) is installed in the groove (11). A slider (13) is fixed at one end of the electric hydraulic rod (12), and the slider (13) is fixed to one side of the bottom of the sliding seat (8).

3. The defect detection device for pharmaceutical packaging boxes according to claim 1, characterized in that: Ear plates (17) are fixed on both sides of the bottom of the horizontal plate (16). A sliding rod (18) slides through the middle of the ear plate (17). The two ends of the sliding rod (18) are fixed on both sides of the inner wall of the sliding seat (8).

4. A defect detection device for pharmaceutical packaging boxes according to claim 1, characterized in that: The optical detection assembly (5) includes an electric push rod (501), which is fixed through the first fixed frame (2). A deflection motor (502) is fixed at the bottom of the electric push rod (501). A connecting frame (503) is fixed on the output shaft of the deflection motor (502). The connecting frame (503) is an inverted L-shaped design, and a circumferential detection head (505) is installed at the lowest end. A top detection head (504) is installed on the connecting frame (503) at the position below the output shaft of the deflection motor (502). Guide rods (506) are fixed on both sides of the body of the deflection motor (502). The guide rods (506) slide through the top of the first fixed frame (2).

5. A defect detection device for pharmaceutical packaging boxes according to claim 1, characterized in that: The automated conveying assembly (7) includes several conveying rollers (701). One end of the conveying roller (701) is fixed with a guide roller (702). The ends of the conveying roller (701) and the guide roller (702) that are far apart from each other are rotatably connected to the detection frame (1) through bushings. The end of the outermost conveying roller (701) is connected to the transmission component in the drive mechanism (6). The other end of the conveying roller (701) is fixed with a transmission wheel (703). A belt (704) is sleeved between two adjacent transmission wheels (703). A rejection conveyor belt (705) is sleeved on the several guide rollers (702).

6. A defect detection device for pharmaceutical packaging boxes according to claim 1, characterized in that: The drive assembly (15) includes a drive motor (151), which is mounted on the back of the sliding seat (8). The output shaft of the drive motor (151) is fixed with a lead screw (153). The two ends of the lead screw (153) are rotatably connected to the sliding seat (8) through bushings, and the lead screw (153) is externally threaded with a nut (152). The nut (152) is fixed to the bottom of the cross plate (16).

7. A defect detection device for pharmaceutical packaging boxes according to claim 5, characterized in that: The box-flipping assembly (19) includes a flipping frame (191), which is L-shaped and has its top extending between two adjacent conveyor rollers (701). The right-angle end of the flipping frame (191) is rotatably connected to a hinge seat (193) via a pin. The hinge seat (193) is fixed on the horizontal plate (16). Support rods (192) are rotatably connected to the middle positions of both sides of the flipping frame (191) via pins. The other ends of the two support rods (192) are rotatably connected to the side of the sliding seat (8) away from the horizontal plate (16) via pins.

8. A defect detection device for pharmaceutical packaging boxes according to claim 7, characterized in that: The bottom detection assembly (20) includes a baffle (201), which is L-shaped and extends through the space between two adjacent conveyor rollers (701). An isolation groove (202) is provided at the lower part of the baffle (201), and a bottom detection head (203) is installed in the isolation groove (202). A support shaft (204) rotatably passes through the right-angle end of the baffle (201), and two sleeves are respectively attached to the outer sides of the support shaft (204). The torsion spring (206) has two ends fixedly connected to the opposite ends of the stop frame (201) and the support shaft (204), respectively. The two ends of the support shaft (204) are fixed with stop blocks (205). The stop blocks (205) are U-shaped and their bottoms are fixed to the horizontal plate (16). The bottom end of the top rod (21) is fixed to the bottom of the inner wall of the stop block (205). The top end of the top rod (21) overlaps the bottom side of the stop frame (201).

9. A detection method for a defect detection device for pharmaceutical packaging boxes, wherein the defect detection device for pharmaceutical packaging boxes according to any one of claims 1-8 is characterized in that, The detection method includes the following steps: The packaging box of the medicine to be tested is fed into the automated conveying assembly (7) in the testing frame (1) from the front end of the production line. After the drive mechanism (6) is started, it drives the outermost conveying roller (701) to rotate through the transmission component. The adjacent conveying rollers (701) are synchronized through the transmission wheel (703) and belt (704), thereby driving the entire conveying roller (701) group to run at a uniform speed and smoothly convey the packaging box to the right. When the packaging box is conveyed to the bottom of the optical detection assembly (5), the conveying roller (701) stops running. The electric push rod (501) in the optical detection assembly (5) is started, pushing the deflection motor (502) and the connecting frame (503) to move downward until the top detection head (504) and the packaging box are in contact. When the distance to the top of the box reaches the preset optimal detection value, during this process, the guide rods (506) on both sides of the deflection motor (502) slide along the first fixed frame (2) to ensure the stability of the connecting frame (503) movement and prevent the top detection head (504) from deflecting. The top detection head (504) starts to perform a full scan detection on the top of the packaging box. During the top detection process, the deflection motor (502) starts to drive the inverted L-shaped connecting frame (503) to rotate at a constant speed around the output shaft. The circumferential detection head (505) at the lowest end of the connecting frame (503) rotates synchronously to perform a 360-degree scan without dead angles on the four sides of the packaging box, collect information on the sides of the packaging box, and transmit it to the external control system in real time for defect identification. After the circumferential and top detections are completed, the conveyor roller (701) starts again, conveying the packaging box above the box-flipping assembly (19) and the bottom detection assembly (20). Then the conveyor roller (701) stops. At this time, the electric hydraulic rod (12) on the support base (9) starts, causing the slider (13) to drive the sliding seat (8) to move horizontally along the slide rails (10) on both sides of the support base (9) through the bottom slide plate (14) until the box-flipping assembly (19) and the bottom detection assembly (20) are precisely aligned with the bottom position of the packaging box. When the bottom of the packaging box is flipped up, the drive motor (151) in the drive assembly (15) starts and drives the lead screw (153) to rotate. The nut (152) threadedly connected to the lead screw (153) drives the horizontal plate (16) to slide in the sliding seat (8). The ear plate (17) at the bottom of the horizontal plate (16) slides along the slide rod (18) to ensure the stability of horizontal movement. During the movement of the horizontal plate (16), it will drive the two box-flipping assemblies (19) and the bottom detection assembly (20) in the middle to move forward. At the same time, the support rod (192) in the box-flipping assembly (19) supports one side of the flip frame (191), so that the right-angle end of the flip frame (191) rotates clockwise in the hinge seat (193) through the pin. During this process, the bottom of the flip frame (191) and the baffle (201) can flip up the bottom of the packaging box during the flipping process. When the packaging box is tilted, it can contact the upper position inside the flip frame (191) and the baffle (201) to prevent the packaging box from tipping over completely. As the horizontal plate (16) drives the two flip frames (191) and the baffle (201) to continue moving forward, the flip frame (191) can rotate 90 degrees clockwise until the top of the two L-shaped flip frames (191) passes through the gap between the adjacent conveyor roller shafts (701) and is located in the lower position. Under the action of the weight of the packaging box, the right-angle end of the baffle (201) can surround the support shaft (204). Rotate to make the flipping frame (191) and the baffle (201) move synchronously. At this time, the packaging box rotates 90 degrees clockwise and flips its bottom to the front. Since the two flipping frames (191) and the baffle (201) flip the packaging box while moving horizontally, the position of the packaging box does not change after it is flipped. The packaging box can be stably transported and inspected normally. The bottom detection head (203) in the groove (11) of the baffle (201) is located in front of the packaging box. There is no structural obstruction or interference between the bottom detection head (203) and the packaging box. Therefore, the bottom of the packaging box can be inspected by flipping it in place without human intervention. When resetting the box-flipping assembly (19) and the bottom detection assembly (20), the drive motor (151) starts and drives the lead screw (153) to rotate in the opposite direction, causing the external nut (152) to move the box-flipping assembly (19) and the bottom detection assembly (20) backward through the cross plate (16). During the movement of the flipping frame (191), it pulls the support rod (192) rotatably connected on one side, causing the support rod (192) to deflect. At the same time, the right-angle end of the flipping frame (191) is connected to the hinge through the pin. The receiving seat (193) rotates clockwise until the flipping frame (191) returns to its initial position. When the packaging box is separated from the baffle (201), the right-angle end of the baffle (201) rotates clockwise outside the support shaft (204) through the force of the torsion spring (206). When the bottom of the baffle (201) contacts the top rod (21), it can play a supporting and limiting role, preventing the baffle (201) from continuing to flip, keeping it in the same position as the flipping frame (191) for subsequent box flipping work. After the bottom inspection head (203) performs the final inspection on the packaging box, the control panel (4) summarizes the inspection data from the top inspection head (504), the circumferential inspection head (505), and the bottom inspection head (203), compares it with the preset pass / fail standards, and determines whether the packaging box is a qualified product or a defective product. At this time, the electric hydraulic rod (12) is activated, pulling the slider (13) to slide along the groove (11), which drives the sliding seat (8) to move horizontally along the slide rails (10) on both sides of the support seat (9) through the bottom slide plate (14). With the T-shaped design of the slide rails (10) and the slide plate (14), the box-flipping assembly is improved. (19) The stability of horizontal movement of the bottom detection component (20) The box-flipping component (19) can push the defective products forward during the forward movement until the packaging box moves onto the rejection conveyor belt (705) and is separated from the conveyor roller (701). Since one end of the conveyor roller (701) is fixed to the guide roller (702), the conveyor roller (701) drives the rejection conveyor belt (705) to work through the guide roller (702) to reject the defective products. The qualified products are then conveyed normally by the conveyor roller (701), thus achieving the purpose of automated sorting of qualified or defective products.

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