Detection equipment for printing defects of medicine packaging box

Abstract

The utility model relates to the technical field of packaging box detection, in particular to medicine packaging box printing defect detection equipment which comprises a box body, a feeding port and a discharging port are formed in the box body, a first conveying belt and a second conveying belt are installed in the box body, the first conveying belt is located above the second conveying belt, and the second conveying belt is located above the first conveying belt. One end of the first conveying belt is located at the feeding port, one end of the second conveying belt is located at the discharging port, one end of the first conveying belt is connected with a first baffle, two positioning plates are fixedly connected in the box body, the two positioning plates are symmetrically arranged, a second baffle is connected between the two positioning plates, and a detection frame is arranged in the box body. Lamp strips and cameras are mounted at the top and the bottom of the detection frame, a driving assembly is arranged in the box body, a material receiving box is fixedly connected to the box body, a waste material opening is formed in the box body, a waste material box is fixedly connected to the box body, an air nozzle is mounted in the box body, and a control box is mounted on the box body, so that the effect of improving the printing defect detection efficiency of the medicine packaging box is achieved.

Description

Technical Field

[0001] This application relates to the field of packaging box inspection technology, and in particular to a detection device for printing defects in pharmaceutical packaging boxes. Background Technology

[0002] Medicine packaging boxes typically label key information such as the drug name, ingredients, indications, dosage, and expiration date to facilitate correct use by patients. While the packaging also serves an aesthetic and promotional purpose, its most important function is ensuring drug safety and information accuracy. To guarantee the accuracy of printed information on medicine packaging boxes, testing equipment is usually used to detect printing defects.

[0003] Existing equipment for detecting printing defects in pharmaceutical packaging boxes mainly includes transport equipment and cameras. Typically, a camera can only inspect one side of the pharmaceutical packaging box at a time. During inspection, the pharmaceutical packaging box needs to be manually flipped over to ensure that all six sides of the pharmaceutical packaging box can be inspected for printing defects.

[0004] The existing technical solutions mentioned above have the following drawbacks: manually turning over the medicine packaging boxes is inefficient, which reduces the efficiency of detecting printing defects in the medicine packaging boxes. Utility Model Content

[0005] This application provides a detection device for printing defects in pharmaceutical packaging boxes to improve the efficiency of detection.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A detection device for printing defects in pharmaceutical packaging boxes includes a housing with legs installed at the bottom. The housing has an inlet and an outlet, with the inlet above the outlet. A first conveyor belt and a second conveyor belt are installed inside the housing, with the first conveyor belt positioned above the second conveyor belt. One end of the first conveyor belt is located at the inlet, and one end of the second conveyor belt is located at the outlet. A first baffle is connected to one end of the first conveyor belt. Two positioning plates are fixedly connected inside the housing, symmetrically arranged, and connected together. The box is equipped with a second baffle and a detection frame. LED strips and cameras are installed at the top and bottom of the detection frame, with multiple cameras spaced apart. A drive assembly for driving the first and second conveyor belts is installed inside the box. A receiving box is fixedly connected to the discharge port on the box. A waste outlet is opened on the box, and a waste box is fixedly connected to the waste outlet. An air nozzle is installed inside the box, with its output direction facing the waste outlet. A control box is installed on the box, and the control box is electrically connected to the motor, LED strips, cameras, and air nozzles.

[0008] By adopting the above technical solution, the jet nozzle can reduce the obstruction of other medicine packaging boxes when pushing out medicine packaging boxes with printing defects, thereby improving the efficiency of medicine packaging box printing defect detection. The drive component can drive the first conveyor belt and the second conveyor belt to run in opposite directions. The first conveyor belt drives the medicine packaging box to move and perform the first printing defect detection. Subsequently, the medicine packaging box falls from the gap between the first baffle and the second baffle onto the second conveyor belt, which can make the bottom surface of the medicine packaging box face up. This facilitates the detection of printing defects on the printed surfaces of the medicine packaging box that were not detected in the first printing inspection, and facilitates the detection of printing defects on all printed surfaces of the medicine packaging box. It also reduces the time required to flip the medicine packaging box and improves the efficiency of medicine packaging box printing defect detection.

[0009] Optionally, a positioning rod is fixedly connected to the positioning plate, and multiple positioning rods are arranged at intervals.

[0010] By adopting the above technical solution, the two positioning plates hold and fix the second baffle. When using this testing equipment to detect printing defects in medicine packaging boxes of different sizes, the bending degree of the second baffle is changed according to the size of the medicine packaging box, and then the bending degree and position of the second baffle are fixed by the positioning rod, which facilitates the detection of printing defects in medicine packaging boxes of different sizes.

[0011] Optionally, a threaded rod is provided on the top of the box, one end of which is located inside the box and fixed to the testing frame, and a nut is threadedly connected to the section of the threaded rod extending out of the box.

[0012] By adopting the above technical solution, the threaded rod can be driven to move up and down in the box by rotating the nut, so as to adjust the distance between the camera and light strip on the inspection frame and the first or second conveyor belt, which facilitates the detection of printing defects in medicine packaging boxes of different sizes.

[0013] Optionally, the drive assembly includes a motor installed inside the housing. The motor's output is connected to a drive bevel gear. A transmission rod is rotatably mounted inside the housing. Two transmission rods are provided. One end of the transmission rod is fixedly connected to a driven bevel gear, and both driven bevel gears mesh with the drive bevel gear. The other end of the transmission rod is fixedly connected to a worm gear. The rotating shafts of the first conveyor belt and the second conveyor belt are both fixedly connected to worm wheels, and the two worm wheels mesh with the two worm gears respectively.

[0014] By adopting the above technical solution, the driving bevel gear and the driven bevel gear drive the transmission rod to rotate, which enables the first conveyor belt and the second conveyor belt to operate at the same speed. This reduces the jamming of the medicine packaging box in the testing equipment caused by the mismatch between the operating speeds of the first and second conveyor belts. The worm and worm wheel on the transmission rod have self-locking characteristics, which can ensure the stability of the first and second conveyor belts when they stop operating and reduce the jamming caused by the medicine packaging box sliding in the testing equipment when the machine stops.

[0015] Optionally, a vibration damping washer is fitted onto the threaded rod, and the vibration damping washer is located between the nut and the housing.

[0016] By adopting the above technical solution, the vibration damping ring can reduce the vibration of the detection frame caused by the vibration of the housing, thus ensuring the stability of the camera operation.

[0017] Optionally, the tops of the waste bin and the receiving bin are respectively higher than the waste outlet and the discharge outlet, and the waste bin and the receiving bin are respectively connected to the waste outlet and the discharge outlet.

[0018] By adopting the above technical solution, the top height of the waste bin and the receiving bin is greater than the height of the waste outlet and the discharge outlet, ensuring that the medicine packaging box can fall into the waste bin or the receiving bin.

[0019] Optionally, four light strips are provided at intervals along the mounting frame.

[0020] By adopting the above technical solutions, the unclear camera images caused by uneven lighting when the medicine packaging boxes pass through the inspection rack can be reduced, the detection efficiency of printing defects in medicine packaging boxes caused by uneven lighting can be reduced, and the stability of the inspection equipment can be ensured.

[0021] Optionally, the waste bin has an opening at the top.

[0022] By adopting the above technical solution, the opening at the top of the waste bin makes it easier for workers to remove medicine packaging boxes with printing defects from the waste bin.

[0023] In summary, this application has the following technical effects:

[0024] 1. By setting up a first conveyor belt, a second conveyor belt, a first baffle, and a second baffle, the bottom surface of the medicine packaging box can be turned upwards, which facilitates the detection of printing defects on the printed surfaces of the medicine packaging box that were not detected in the first printing inspection, facilitates the detection of printing defects on each printed surface of the medicine packaging box, reduces the time required to flip the medicine packaging box, and improves the efficiency of printing defect detection of the medicine packaging box.

[0025] 2. By setting up a positioning plate and a positioning rod, when using this testing equipment to detect printing defects in medicine packaging boxes of different sizes, the bending degree of the second baffle is changed according to the size of the medicine packaging box, and then the bending degree and position of the second baffle are fixed by the positioning rod, which facilitates the detection of printing defects in medicine packaging boxes of different sizes.

[0026] 3. By setting up a drive assembly, the first and second conveyor belts can operate at the same speed, reducing the risk of medicine packaging boxes getting stuck in the testing equipment due to speed mismatch between the first and second conveyor belts. The worm gear and worm wheel on the transmission rod have self-locking characteristics, which can ensure the stability of the first and second conveyor belts when they stop, and reduce the risk of medicine packaging boxes sliding in the testing equipment when the machine stops. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the object of this application;

[0028] Figure 2 This is a structural diagram of this application after it has been opened;

[0029] Figure 3 This is a prominent structural diagram of the testing frame, threaded rod, nut, and vibration damping washer of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Support leg; 12. Feed inlet; 13. Discharge outlet; 14. Waste outlet; 15. Waste bin; 16. Receiving bin; 17. Control box; 2. First conveyor belt; 21. First baffle; 3. Second conveyor belt; 31. Second baffle; 4. Positioning plate; 41. Positioning rod; 5. Threaded rod; 51. Nut; 52. Vibration damping washer; 6. Detection frame; 61. Light strip; 62. Camera; 7. Drive assembly; 71. Motor; 72. Drive bevel gear; 73. Transmission rod; 74. Driven bevel gear; 75. Worm gear; 76. Worm wheel; 8. Air nozzle. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] This application discloses a detection device for printing defects in pharmaceutical packaging boxes, referring to... Figure 1 and Figure 2 The testing equipment includes a box 1, which is rectangular and has legs 11 fixed to the bottom by bolts. The side wall of the box 1 along its length is provided with an inlet 12 and an outlet 13. The inlet 12 is located above the outlet 13. A first conveyor belt 2 and a second conveyor belt 3 are installed inside the box 1. The first conveyor belt 2 is located above the second conveyor belt 3. One end of the first conveyor belt 2 is located at the inlet 12, and one end of the second conveyor belt 3 is located at the outlet 13. Both the first conveyor belt 2 and the second conveyor belt 3 are horizontally arranged.

[0033] Reference Figure 2 The first conveyor belt 2 is connected to a first baffle 21 at the end away from the feed inlet 12. The surface of the first baffle 21 is curved into an arc shape. A connecting block is integrally formed on the side of the first baffle 2 closest to the first conveyor belt 2. Two connecting blocks are spaced apart and are respectively fixed to the two side walls of the end of the first conveyor belt 2 away from the feed inlet 12 by bolts. The end of the first baffle 2 closest to the first conveyor belt 2 is located below the end of the first conveyor belt 2 away from the feed inlet 12.

[0034] Reference Figure 2 Inside the housing 1, a positioning plate 4 is bolted to the inside. There are two positioning plates 4, which are located on the two side walls of the housing 1 near the end of the first baffle 21. Positioning rods 41 are bolted to the opposite side of the two positioning plates 4. Multiple positioning rods 41 are arranged at intervals along the surface of the positioning plates 4. A second baffle 31 is connected between the two positioning plates 4. The second baffle 31 is a baffle made of elastic metal plate. The surface of the second baffle 31 is curved in an arc shape and in the same direction as the first baffle 21. The part of the second baffle 31 near the positioning plate 4 is in contact with the positioning rods 41 located between them. The end of the second baffle 31 near the first conveyor belt 2 is located above the end of the first conveyor belt 2 away from the inlet 12. The part of the second baffle 31 away from the first conveyor belt 2 is located above the end of the second conveyor belt 3 away from the outlet 13.

[0035] Reference Figure 2 and Figure 3 A threaded rod 5 is inserted through the top of the box body 1. Four threaded rods 5 are spaced apart on the top surface of the box body 1 in a rectangular arrangement. Nuts 51 are threadedly connected to the threaded rods 5. Vibration damping washers 52 are fitted on the threaded rods 5, located between the nuts 51 and the box body 1. One end of the four threaded rods 5 is located inside the box body 1 and is connected to a detection frame 6. The detection frame 6 is fitted on the first conveyor belt 2, and the bottom of the detection frame 6 is located above the second conveyor belt 3. Light strips 61 for lighting are installed on the top and bottom sides of the detection frame 6 facing the second conveyor belt 3. Four light strips 61 are spaced apart along the mounting frame. Cameras 62 for photographing the printing of medicine packaging boxes are installed on the top and bottom of the mounting frame. Four cameras 62 are spaced apart along the inner wall of the mounting frame.

[0036] Reference Figure 2The housing 1 is equipped with a drive assembly 7, which includes a motor 71 installed in the housing 1 near the discharge port 13. The output shaft of the motor 71 is connected to a drive bevel gear 72 via a coupling. A transmission rod 73 is rotatably arranged on the inner wall of the housing 1. Two transmission rods 73 are symmetrically arranged and are located on the inner wall of the housing 1 near the motor 71. A driven bevel gear 74 is welded to the end of the two transmission rods 73 that is close to each other. Both driven bevel gears 74 mesh with the drive blow bevel gear. A worm gear 75 is welded to the end of the two transmission rods 73 that is far apart from each other. A worm wheel 76 is fixed to the end of the rotating shaft of the first conveyor belt 2 and the second conveyor belt 3 near the inlet 12 near the motor 71 via bolts. The two worm wheels 76 mesh with the two worm gears 75 respectively.

[0037] Reference Figure 1 and Figure 2 The housing 1 is equipped with a jet nozzle 8 for ejecting packaging boxes with printing defects. The jet nozzle 8 is located on the second conveyor belt 3 near the motor 71. The outer wall of the housing 1 has a waste port 14 located in the output direction of the jet nozzle 8. A waste box 15 is fixed to the outer wall of the housing 1 by bolts. The top of the waste box 15 has an opening, and the height of the top of the waste box 15 is greater than the height of the top of the waste port 14. The top of the waste box 15 is connected to the waste port 14.

[0038] Reference Figure 1 The outer wall of the box 1 has a discharge port 13 and a receiving box 16 is fixed to it by bolts. The top height of the receiving box 16 is greater than the top height of the discharge port 13, and the top of the receiving box 16 is connected to the discharge port 13.

[0039] Reference Figure 1 and Figure 2 A control box 17 is installed on the outer wall of the housing 1. A PLC processor is installed inside the control box 17. The PLC processor is electrically connected to the motor 71, the light strip 61, the camera 62 and the air nozzle 8.

[0040] When using this testing equipment, the drive assembly 7 is activated to drive the first conveyor belt 2 and the second conveyor belt 3. The medicine packaging boxes to be tested are sequentially placed onto the first conveyor belt 2 from the inlet 12. The medicine packaging boxes move with the first conveyor belt 2. When the medicine packaging box passes the testing frame 6, the PLC processor uses four cameras 62 above the first conveyor belt 2 to detect printing defects on the top surface, both sides, and one side wall along the length of the medicine packaging box. When the medicine packaging box moves to the end of the first conveyor belt 2 away from the inlet 12, it slides from the first conveyor belt 2 into the gap between the first baffle 21 and the second baffle 31, and then slides along the second baffle 31 to the end of the second conveyor belt 3 away from the outlet 13. At this time, the bottom of the medicine packaging box faces upwards and moves with the second conveyor belt 3 to below the testing frame 6. The PLC processor uses four cameras 62 above the second conveyor belt 3 to detect printing defects. Each camera 62 detects printing defects on the bottom, two sides, and the other side wall along the length of the medicine packaging box. When a medicine packaging box with a printing defect is detected, the PLC processor controls the nozzle 8 to spray air, pushing the medicine packaging box with printing defects off the second conveyor belt 3 and into the waste bin 15 through the waste outlet 14. The nozzle 8 can reduce the obstruction of other medicine packaging boxes when pushing out the medicine packaging box with printing defects, thereby improving the efficiency of medicine packaging box printing defect detection. Medicine packaging boxes without printing defects will move with the second conveyor belt 3 to the discharge outlet 13 and then fall into the receiving bin 16. The top height of the waste bin 15 and the receiving bin 16 is greater than the height of the waste outlet 14 and the discharge outlet 13, ensuring that the medicine packaging boxes can fall into the waste bin 15 or the receiving bin 16. The opening at the top of the waste bin 15 makes it easy for workers to remove the medicine packaging boxes with printing defects from the waste bin 15.

[0041] The first conveyor belt 2 moves the medicine packaging box and performs the first printing defect detection. Then, the medicine packaging box falls onto the second conveyor belt 3 through the gap between the first baffle 21 and the second baffle 31. This allows the bottom surface of the medicine packaging box to face upwards, which facilitates the detection of printing defects on the printed surfaces that were not detected in the first printing inspection. It also facilitates the detection of printing defects on all printed surfaces of the medicine packaging box, reduces the time required to flip the medicine packaging box, and improves the efficiency of printing defect detection.

[0042] By using the housing 1 and the light strip 61 set along the inspection frame 6, the camera 62 can capture clear images of medicine packaging boxes when they pass through the inspection frame 6 due to uneven lighting. This reduces the efficiency of detecting printing defects in medicine packaging boxes caused by uneven lighting and ensures the stability of the inspection equipment.

[0043] The second baffle 31 is held and fixed by two positioning plates 4. When this testing equipment is used to detect printing defects in medicine packaging boxes of different sizes, the bending degree of the second baffle 31 is changed according to the size of the medicine packaging box. Then, the bending degree and position of the second baffle 31 are fixed by the positioning rod 41, which facilitates the detection of printing defects in medicine packaging boxes of different sizes.

[0044] When using this inspection equipment to detect printing defects in pharmaceutical packaging boxes of different sizes, the threaded rod 5 can be moved up and down within the housing 1 by rotating the nut 51. This adjusts the distance between the camera and light strip 61 on the inspection frame 6 and the first conveyor belt 2 or the second conveyor belt 3, facilitating the detection of printing defects in pharmaceutical packaging boxes of different sizes. Vibration damping washers reduce vibration of the inspection frame 6 caused by housing vibration, ensuring the stability of the camera 62 during operation.

[0045] The drive assembly 7 can drive the first conveyor belt 2 and the second conveyor belt 3 to run in opposite directions. By driving the bevel gear 72 and the driven bevel gear 74 to drive the transmission rod 73 to rotate, the first conveyor belt 2 and the second conveyor belt 3 can run at the same speed, reducing the jamming of the medicine packaging box in the testing equipment caused by the mismatch of the running speed of the first conveyor belt 2 and the second conveyor belt 3. The worm gear 75 and the worm wheel 76 on the transmission rod 73 have self-locking characteristics, which can ensure the stability when the first conveyor belt 2 and the second conveyor belt 3 stop running, and reduce the jamming caused by the medicine packaging box sliding in the testing equipment when the machine stops.

[0046] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An apparatus for detecting printing defects of a medicine package box, characterized by comprising: The detection equipment includes a box body (1), the bottom of the box body (1) is provided with supporting legs (11), the box body (1) is provided with a feeding port (12) and a discharging port (13), the feeding port (12) is above the discharging port (13), the box body (1) is provided with a first conveying belt (2) and a second conveying belt (3), the first conveying belt (2) is above the second conveying belt (3), one end of the first conveying belt (2) is located at the feeding port (12), one end of the second conveying belt (3) is located at the discharging port (13), one end of the first conveying belt (2) is connected with a first baffle (21), the box body (1) is fixedly connected with positioning plates (4), the positioning plates (4) are symmetrically provided with two, the two positioning plates (4) are connected with a second baffle (31), the box body (1) is provided with a detection frame (6), the detection frame (6) is provided with lamp strips (61) and cameras (62) at the top and the bottom, the cameras (62) are spaced apart, the box body (1) is provided with a driving assembly (7) for driving the first conveying belt (2) and the second conveying belt (3), the box body (1) is fixedly connected with a receiving box (16) at the discharging port (13), the box body (1) is provided with a waste port (14), the box body (1) is fixedly connected with a waste box (15) at the waste port (14), the box body (1) is provided with a gas jet nozzle (8), the output direction of the gas jet nozzle (8) faces the waste port (14), the box body (1) is provided with a control box (17), the control box (17) is electrically connected with a motor (71), the lamp strips (61), the cameras (62) and the gas jet nozzle (8).

2. The apparatus for detecting printing defects of a medicine packaging box according to claim 1, wherein: The positioning plates (4) are fixedly connected with positioning rods (41), and the positioning rods (41) are spaced apart.

3. The apparatus for detecting printing defects of a medicine packaging box according to claim 2, wherein: The box body (1) is provided with a threaded rod (5) at the top, one end of the threaded rod (5) is located in the box body (1) and is fixedly connected with the detection frame (6), and a nut (51) is threadedly connected with the part of the threaded rod (5) extending out of the box body (1).

4. The apparatus for detecting printing defects of a medicine packaging box according to claim 1, wherein: The driving assembly (7) includes a motor (71), the motor (71) is installed in the box body (1), the output of the motor (71) is connected with a driving bevel gear (72), the box body (1) is rotatably provided with transmission rods (73), the transmission rods (73) are provided with two, one end of the transmission rod (73) is fixedly connected with a driven bevel gear (74), the two driven bevel gears (74) are meshed with the driving bevel gear (72), the other end of the transmission rod (73) is fixedly connected with a worm (75), the rotating shafts of the first conveying belt (2) and the second conveying belt (3) are fixedly connected with worm gears (76), and the two worm gears (76) are respectively meshed with the two worms (75).

5. The apparatus for detecting printing defects of a medicine packaging box according to claim 3, wherein: A damping washer (52) is sleeved on the threaded rod (5), and the damping washer (52) is located between the nut (51) and the box body (1).

6. The apparatus for detecting printing defects of a medicine packaging box according to claim 4, wherein: The top of the waste box (15) and the top of the receiving box (16) are higher than the waste outlet (14) and the discharge outlet (13) respectively, and the waste box (15) and the receiving box (16) are communicated with the waste outlet (14) and the discharge outlet (13) respectively.

7. A device for detecting printing defects on a pharmaceutical packaging box according to claim 6, characterized in that: Four lamp strips (61) are arranged along the detection frame.

8. The apparatus for detecting printing defects of a medicine packaging box according to claim 7, wherein: An opening is arranged on the top of the waste box (15).

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