A bottle cap detection apparatus
By designing a flipping component and a blower nozzle to separate defective bottle caps in the bottle cap inspection equipment, the problem of the inability of the bottle cap inspection equipment to perform comprehensive inspection was solved, achieving comprehensive inspection of both sides of the bottle cap and a high yield rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANDAN DINGKANG PACKAGING CO LTD
- Filing Date
- 2026-06-02
- Publication Date
- 2026-07-21
AI Technical Summary
Existing bottle cap inspection equipment cannot fully inspect both sides of the bottle cap, resulting in blind spots in visual inspection and affecting the inspection results.
A bottle cap inspection device was designed. By using first and second conveyors in conjunction with a bottle cap flipping assembly and a vision inspection device, the device can flip and inspect both sides of the bottle cap. Defective bottle caps are separated using a blower nozzle to ensure comprehensive inspection.
It enables comprehensive inspection of both sides of the bottle cap, improving the accuracy of inspection and the yield rate, and reducing the residue of defective bottle caps.
Smart Images
Figure CN122425004A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bottle cap processing technology, and in particular to a bottle cap testing device. Background Technology
[0002] In the packaging industries of food, beverage, pharmaceutical, and daily chemical products, bottle caps are key components for sealing containers. Their appearance integrity, dimensional accuracy, printing quality, and structural condition directly affect product sealing safety, shelf life, and user experience. As production lines become faster and more automated, traditional methods relying on manual visual inspection are no longer sufficient to meet the demands of mass production, resulting in problems such as low inspection efficiency, poor consistency, susceptibility to fatigue-induced missed inspections, and high labor costs.
[0003] To address this, the industry is gradually introducing automated inspection equipment based on machine vision. This equipment uses industrial cameras and other visual inspection devices to capture images of bottle caps, and then, in conjunction with light sources and image processing algorithms, automatically identifies and removes surface defects such as scratches, stains, missing materials, deformation, cracks, printing defects, broken tamper-evident rings, and missing gaskets. However, current inspection equipment often only detects one side of the bottle cap, as the other side is obscured during transmission and cannot be visually identified. This results in significant blind spots in visual inspection, affecting the comprehensiveness of the inspection. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to provide a bottle cap inspection device that, after visually inspecting one side of the bottle cap, can easily flip the bottle cap to visually inspect the other side, thus making the inspection effect more comprehensive.
[0005] The technical solution adopted in this invention is as follows: a bottle cap inspection device is provided, including a base; a frame is connected to the upper end of the base; a first conveyor for conveying bottle caps sequentially from front to back and a second conveyor for conveying bottle caps sequentially from back to front are respectively connected to the frame; the second conveyor is arranged parallel to the first conveyor below; a bottle cap flipping component and a defective bottle cap detection and separation component are provided on the frame. The bottle cap flipping assembly includes a first isolation strip fixed to the frame; the first isolation strip extends rearward from the front side above the first conveyor, and after passing around the rear of the first conveyor, extends to the rear side below the first conveyor; when the bottle cap is conveyed on the first conveyor, the end and side of the bottle cap are blocked by the first isolation strip; a second isolation strip is provided parallel to the front-rear direction above the second conveyor; the rear end of the second isolation strip is in front of the rear end of the first isolation strip; when the bottle cap is conveyed on the second conveyor, the end and side of the bottle cap are blocked by the second isolation strip. The defective bottle cap detection and separation assembly includes a first visual inspection device located above a first conveyor and a second visual inspection device located between the first and second conveyors. Both the first and second visual inspection devices are connected to a frame and are used to detect bottle caps passing beneath them. A first outlet for discharging defective bottle caps is located on the side of the frame corresponding to the upper end of the first conveyor. A second outlet for discharging defective bottle caps is located on the side of the frame corresponding to the upper end of the second conveyor. First air nozzles are connected to the sides of the frame furthest from the first and second outlets, respectively. The first air nozzles are aligned with the first and second outlets. A controller is connected to the frame. The first visual inspection device, the second visual inspection device, and the first air nozzles are all connected to the controller via a control circuit.
[0006] To further optimize this technical solution, a bottle cap detection device has a frame connected to a first guide ramp for introducing bottle caps between a first isolation strip and a first conveyor; and a frame connected to a second guide ramp for introducing bottle caps from the first isolation strip to a second isolation strip and a second conveyor.
[0007] To further optimize this technical solution, a bottle cap detection device has a second air nozzle connected to a frame on both the front and rear sides of the first outlet; a third air nozzle connected to a frame is provided on both the front and rear sides of the second outlet; the second and third air nozzles blow air in opposite directions to the first air nozzle; the second air nozzles are aimed at the bottle caps adjacent to the front and rear ends of the first outlet; the third air nozzles are aimed at the bottle caps adjacent to the front and rear ends of the second outlet; both the second and third air nozzles are connected to a controller via a control circuit.
[0008] To further optimize this technical solution, the first and second outlets of a bottle cap testing device are located on the same side of the frame; a waste bin is connected to the base; the waste bin is correspondingly connected below the first and second outlets.
[0009] To further optimize this technical solution, a bottle cap detection device has guide grooves connected to the lower ends of the first and second row outlets at an angle; the outlet ends of the two guide grooves are staggered relative to each other.
[0010] To further optimize this technical solution, a finished product box is connected to the base of a bottle cap testing device; the finished product box is correspondingly placed below the front end of the second conveyor.
[0011] The beneficial effects of this invention are as follows: The first and second isolation strips guide the bottle caps, ensuring they are transported in a neat, sequential order. This allows the first and second visual inspection devices to sequentially identify and inspect the upward-facing sides of the bottle caps. The first isolation strip extends around the rear of the first conveyor, below it, allowing the bottle caps to be transported along it and flipped. This reverses the upward-facing sides of the bottle caps on the second conveyor, making them opposite to those on the first conveyor. This enables both devices to inspect the bottle caps from both sides, improving the comprehensiveness of the inspection. The first air nozzles are positioned at the first and second outlets, respectively, blowing out any defective bottle caps detected by the first and second visual inspection devices, leaving only the acceptable caps. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural diagram of one side of the internal structure of the rack; Figure 3 This is a schematic diagram of the structure on the other side of the rack.
[0013] In the diagram, 1. Base; 2. Frame; 3. First conveyor; 4. Second conveyor; 5. First isolation strip; 6. Second isolation strip; 7. First visual inspection device; 8. Second visual inspection device; 9. First outlet; 10. Second outlet; 11. First air nozzle; 12. Controller; 13. First guide ramp; 14. Second guide ramp; 15. Second air nozzle; 16. Third air nozzle; 17. Waste bin; 18. Guide tray; 19. Finished product bin. Detailed Implementation
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0015] like Figure 1-3 As shown, a bottle cap inspection device includes a base 1; a frame 2 is connected to the upper end of the base 1; a first conveyor 3 for conveying bottle caps sequentially from front to back and a second conveyor 4 for conveying bottle caps sequentially from back to front are respectively connected to the frame 2; the second conveyor 4 is arranged parallel to the first conveyor 3 below; the frame 2 is provided with a bottle cap flipping assembly and a defective bottle cap detection and separation assembly. The bottle cap flipping assembly includes a first isolation strip 5 fixed on the frame 2; the first isolation strip 5 extends rearward from the front side above the first conveyor 3, and after passing around the rear of the first conveyor 3, extends to the rear side below the first conveyor 3; when the bottle cap is conveyed on the first conveyor 3, the end and side of the bottle cap are blocked by the first isolation strip 5; a second isolation strip 6 is provided parallel to the front and rear directions above the second conveyor 4; the rear end of the second isolation strip 6 is in front of the rear end of the first isolation strip 5; when the bottle cap is conveyed on the second conveyor 4, the end and side of the bottle cap are blocked by the second isolation strip 6. The defective bottle cap detection and separation assembly includes a first visual inspection device 7 located above the first conveyor 3 and a second visual inspection device 8 located between the first conveyor 3 and the second conveyor 4. Both the first visual inspection device 7 and the second visual inspection device 8 are connected to the frame 2 and are used to detect bottle caps passing below them. A first outlet 9 for discharging defective bottle caps is opened on the side of the frame 2 corresponding to the upper end of the first conveyor 3. A second outlet 10 for discharging defective bottle caps is opened on the side of the frame 2 corresponding to the upper end of the second conveyor 4. First air nozzles 11 are connected to the sides of the frame 2 opposite to the first outlet 9 and the second outlet 10, respectively. The first air nozzles 11 are aligned with the first outlet 9 and the second outlet 10, respectively. A controller 12 is connected to the frame 2. The first visual inspection device 7, the second visual inspection device 8, and the first air nozzles 11 are all connected to the controller 12 via a control circuit.
[0016] The bottle caps to be inspected are introduced into the first conveyor 3 in sequence without distinguishing between front and back. The first conveyor 3 transports the bottle caps, which are confined between the first isolation strip 5 and the first conveyor 3. The bottle caps pass under the first vision inspection device 7 in sequence. At this time, the upward side of the bottle cap can be visually identified and inspected. Bottle caps that pass the inspection continue to be transported, while bottle caps that fail the inspection are blown out of the first row outlet 9 by the controller 12 controlling the corresponding first blow nozzle 11 to blow a momentary strong airflow when they reach the first row outlet 9, thus removing the unqualified bottle caps.
[0017] When the bottle caps are conveyed to the rear end of the upper side of the first conveyor 3, they do not fall directly because the first isolation strip 5 still blocks them. Instead, they continue to be conveyed along the first isolation strip 5 to the rear side below the first conveyor 3, where they are flipped. Finally, they detach from the first isolation strip 5 and fall to the rear end of the upper side of the second conveyor 4. From there, they continue to be conveyed from back to front via the second conveyor 4. At this point, all the bottle caps have been flipped up and down. As the bottle caps pass under the second vision inspection device 8 in sequence, they can be inspected from the other side, making the inspection more comprehensive. Similarly, during this process, qualified bottle caps continue to be conveyed, while unqualified bottle caps are removed when they reach the second outlet 10 by a powerful, instantaneous blow from the corresponding first air nozzle 11.
[0018] By removing defective bottle caps through the above-mentioned inspection from both sides, the residue of defective bottle caps can be reduced, resulting in a high yield rate of the remaining bottle caps.
[0019] In addition, to ensure that defective bottle caps are accurately discharged from the first outlet 9 and the second outlet 10, rather than the wrong bottle caps, the blowing timing of the first blower nozzle 11 must be matched with the transmission speed of the first conveyor 3 and the second conveyor 4 respectively. The first blower nozzle 11 starts blowing when the defective bottle cap is exactly transported to the first outlet 9 or the second outlet 10. This control process can be assisted by devices such as time relays. This process is a mature existing control technology, so it will not be described in detail in this solution.
[0020] like Figure 1-3 As shown, a first guide ramp 13 for introducing bottle caps between the first isolation strip 5 and the first conveyor 3 is connected to the frame 2; a second guide ramp 14 for introducing bottle caps from the first isolation strip 5 to the second isolation strip 6 and the second conveyor 4 is connected to the frame 2.
[0021] The first guide ramp 13 and the second guide ramp 14 ensure that the bottle caps are properly guided when they are introduced into the first conveyor 3 and the second conveyor 4, avoiding problems such as bottle caps falling off or stacking that affect smooth transmission.
[0022] like Figure 1 , Figure 3 As shown, the front and rear sides of the first outlet 9 are respectively provided with second air nozzles 15 connected to the frame 2; the front and rear sides of the second outlet 10 are respectively provided with third air nozzles 16 connected to the frame 2; the second air nozzles 15 and the third air nozzles 16 are respectively opposite to the air blowing direction of the first air nozzle 11; the second air nozzles 15 are respectively aligned with the bottle caps adjacent to the front and rear ends of the first outlet 9; the third air nozzles 16 are respectively aligned with the bottle caps adjacent to the front and rear ends of the second outlet 10; the second air nozzles 15 and the third air nozzles 16 are both connected to the controller 12 through the control circuit.
[0023] The second blower nozzle 15 and the third blower nozzle 16 have the same function: to work in conjunction with the corresponding first blower nozzle 11 to apply a reverse force to two adjacent bottle caps when a defective bottle cap is removed. This prevents the adjacent bottle caps from being mistakenly removed due to friction or other reasons.
[0024] like Figure 1 As shown, the first outlet 9 and the second outlet 10 are located on the same side of the frame 2; a waste bin 17 is connected to the base 1; the waste bin 17 is correspondingly attached below the first outlet 9 and the second outlet 10. The waste bin 17 can be used to collect defective bottle caps.
[0025] like Figure 1 As shown, the lower ends of the first row outlet 9 and the second row outlet 10 are respectively inclined downwards and connected to guide trays 18; the outlet ends of the two guide trays 18 are staggered relative to each other. The guide trays 18 can be used to guide the discharged defective bottle caps, and their staggered distribution is to avoid them colliding in the air when they fall into the waste bin 17, causing them to fall out of the waste bin 17.
[0026] like Figure 1 As shown, a finished product box 19 is connected to the base 1; the finished product box 19 is attached to the lower part of the front end of the second conveyor 4. Bottle caps that pass the inspection on both sides will fall from the front end of the second conveyor 4 and be successfully collected by the finished product box 19.
[0027] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.
Claims
1. A bottle cap testing device, characterized in that: Includes a base (1); the upper end of the base (1) is connected to a frame (2); the frame (2) is respectively connected to a first conveyor (3) for conveying bottle caps from front to back and a second conveyor (4) for conveying bottle caps from back to front; the second conveyor (4) is arranged parallel to the first conveyor (3) below; the frame (2) is provided with a bottle cap flipping assembly and a defective bottle cap detection and separation assembly; The bottle cap flipping assembly includes a first isolation strip (5) fixed on the frame (2); the first isolation strip (5) extends backward from the front side above the first conveyor (3), and after passing around the rear of the first conveyor (3), extends to the rear side below the first conveyor (3); when the bottle cap is transported on the first conveyor (3), the end and side of the bottle cap are blocked by the first isolation strip (5); a second isolation strip (6) is provided parallel to the front and rear direction above the second conveyor (4); the rear end of the second isolation strip (6) is in front of the rear end of the first isolation strip (5); when the bottle cap is transported on the second conveyor (4), the end and side of the bottle cap are blocked by the second isolation strip (6); The defective bottle cap detection and separation assembly includes a first visual inspection device (7) located above the first conveyor (3) and a second visual inspection device (8) located between the first conveyor (3) and the second conveyor (4); the first visual inspection device (7) and the second visual inspection device (8) are both connected to the frame (2) and are used to detect bottle caps passing below them respectively. The frame (2) has a first outlet (9) for discharging defective bottle caps on one side corresponding to the upper end of the first conveyor (3); the frame (2) has a second outlet (10) for discharging defective bottle caps on one side corresponding to the upper end of the second conveyor (4); the frame (2) has a first blow nozzle (11) connected to the side of the frame (2) away from the first outlet (9) and the second outlet (10); the first blow nozzle (11) is aligned with the first outlet (9) and the second outlet (10); the frame (2) is connected to a controller (12); the first visual inspection device (7), the second visual inspection device (8) and the first blow nozzle (11) are all connected to the controller (12) through a control circuit.
2. The bottle cap testing device according to claim 1, characterized in that: A first guide ramp (13) is connected to the frame (2) for introducing bottle caps between the first isolation strip (5) and the first conveyor (3); a second guide ramp (14) is connected to the frame (2) for introducing bottle caps from the first isolation strip (5) to the second isolation strip (6) and the second conveyor (4).
3. The bottle cap testing device according to claim 1, characterized in that: The front and rear sides of the first outlet (9) are respectively provided with second air nozzles (15) connected to the frame (2); the front and rear sides of the second outlet (10) are respectively provided with third air nozzles (16) connected to the frame (2); the second air nozzles (15) and the third air nozzles (16) are respectively opposite to the air blowing direction of the first air nozzle (11); the second air nozzles (15) are respectively aligned with the bottle caps adjacent to the front and rear ends of the first outlet (9); the third air nozzles (16) are respectively aligned with the bottle caps adjacent to the front and rear ends of the second outlet (10); the second air nozzles (15) and the third air nozzles (16) are both connected to the controller (12) through the control circuit.
4. The bottle cap testing device according to claim 1, characterized in that: The first row of outlets (9) and the second row of outlets (10) are located on the same side of the frame (2); a waste bin (17) is connected to the base (1); the waste bin (17) is connected to the first row of outlets (9) and the second row of outlets (10) respectively.
5. The bottle cap testing device according to claim 4, characterized in that: The lower ends of the first row outlet (9) and the lower ends of the second row outlet (10) are respectively inclined downwards and connected to guide brackets (18); the outlet ends of the two guide brackets (18) are staggered relative to each other.
6. The bottle cap testing device according to claim 1, characterized in that: A finished product box (19) is connected to the base (1); the finished product box (19) is connected to the lower part of the front end of the second conveyor (4).