Cap taking and placing device
By designing a cap-picking and cap-placing device, which combines photoelectric detection and camera image analysis with robotic components, the device automatically identifies and adjusts the rotation angle of the bottle cap, solving the problem of aligning the bottle cap with the bottle body and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HUIQUAN TECH CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-16
AI Technical Summary
On automated production lines for bottle caps and bottles, existing technologies struggle to accurately identify and adjust the rotation angle of the bottle cap to ensure proper alignment with the bottle body, resulting in low production efficiency.
A cap-removing and cap-placing device was designed. Utilizing photoelectric detection, camera image analysis, and robotic components, the device automatically identifies the rotation angle of the bottle cap and accurately installs it onto the bottle through a conveyor channel, capping device, and rotating arm.
It improves the efficiency of automatic alignment between bottle caps and bottles, thereby increasing the working efficiency of the production line.
Smart Images

Figure CN224362527U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automatic bottle cap production line technology, specifically a cap taking and placing device. Background Technology
[0002] There are some barrel-shaped cans on the market, such as milk powder cans, with barrel-shaped lids that have a flat top and ring-shaped side lids.
[0003] During the production process, items are usually placed inside the can before the lid is put on. However, the lid mentioned above, being barrel-shaped, requires alignment with the can body due to their shape or pattern. Especially during assembly line production, it cannot be guaranteed that the relative position of the lid and the can body will remain unchanged. Therefore, the system needs to automatically determine whether the lid needs to be rotated by a certain angle and by how much to properly fit and tighten it with the can body. Utility Model Content
[0004] The purpose of this invention is to provide a cap picking and placing device that connects to a filling production line. It can identify whether the cap needs to be rotated at a certain angle and by how much. After the cap is picked up by a robotic arm, it is installed onto the can. The identification process is accurate and improves work efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A cap-retrieving and cap-placing device is disclosed, wherein the cap has a flat top and includes a preparation platform and a worktable. The inner side of each cap is marked with an identifiable identifier. The preparation platform is located on one side of the worktable. The upper part of the preparation platform includes a conveying channel, a cap-pressing device, and a photoelectric detection device. The caps are sequentially conveyed along the conveying channel. A positioning baffle is located at the end of the conveying channel closest to the worktable, and the bottom of this end is a transparent plate. The preparation platform is equipped with a camera image analysis device, which includes a camera and a light source assembly located below the transparent plate. The transparent plate has one or two cap positions. The camera is aligned with the lower part of the first cap position closest to the worktable. The cap-pressing device includes a telescopic pressure head aligned with the upper center of the second cap position closest to the worktable. The photoelectric detection device is located on the side of the first cap position closest to the worktable. The worktable is equipped with a robot assembly, which includes a rotating arm with a vacuum suction cup at its bottom.
[0007] In this system, the caps are pushed from the production line onto the conveyor channel of the preparation station. The diameter of the conveyor channel is matched to that of the caps to ensure that the caps are arranged in a row with the front and back caps touching. After the caps are pushed onto the transparent plate, the first cap reaches the end of the conveyor channel and is blocked by a positioning baffle. After the photoelectric detection device detects that the cap is in place, the back-end management system instructs the telescopic pressure head of the capping device to press down, pressing down the second cap behind the first cap, preventing subsequent caps from being pushed forward, and not interfering with the accuracy and image quality of the camera's image analysis device for the first cap. After the camera's image analysis device analyzes the position and angle of the first cap, the robotic arm on the worktable rotates to above the first cap and uses a vacuum suction cup to hold the cap. The back-end management system then instructs the robotic arm to rotate and move to above the can placed on the worktable, placing the cap... The rotating arm comprises a triple rotating mechanism. The first is the overall rotating mechanism of the rotating arm. The second is a separate rotating mechanism mounted on the overall rotating mechanism. The separate rotating mechanism, in conjunction with the overall rotating mechanism, can move the vacuum suction cup above the first cover on the preparation table or above any can on the worktable. The vacuum suction cup is mounted on the third angle rotating mechanism of the rotating arm, which rotates the cover by a specified angle. After the background management system analyzes the position and angle of the cover and the position and angle of the can to be placed based on the camera image analysis device, it instructs the rotating arm to vacuum-adsorb the cover, rotate and displace it, and then place it on the designated can on the worktable. The worktable is part of the production line. The cans on the worktable move in a ring. The cans enter the worktable from the previous production line, wait for the rotating arm to place the cover on the can, and then enter the next production line.
[0008] As a preferred embodiment of this utility model, limiting baffles are provided on both sides of the conveying channel. The spacing between the limiting baffles is set to match the diameter of the cover. An adjusting elongated hole is provided at the bottom of the limiting baffle. The limiting baffle extends obliquely outward at the first cover position. The width of the conveying channel in this embodiment can be adjusted to match the diameter of the cover. This allows the covers to move in a straight line in the conveying channel without shifting the center, making it convenient for the camera of the camera image analysis device to focus on the bottom position of the cover when taking pictures. The limiting baffles on both sides extend obliquely outward at the first cover position, no longer restricting the cover, making it easier for the cover to be vacuum-adsorbed and moved by the robot component.
[0009] In a preferred embodiment of this invention, the capping device is equipped with an adjusting frame connected to the side of the preparation table. The adjusting frame has a cantilever suspended above the second cap position near the worktable. The telescopic pressure head is a telescopic cylinder extension rod connected below the cantilever. The bottom of the adjusting frame has an adjusting elongated hole. This adjusting elongated hole at the bottom of the adjusting frame is used to adjust the height of the adjusting frame relative to the preparation table. Because the cap height may change, while the stroke of the telescopic cylinder is constant, the height of the adjusting frame needs to be adjusted so that the stroke of the telescopic cylinder extension rod matches the cap height.
[0010] In a preferred embodiment of this invention, the positioning baffle is connected to the preparation table via a fixed bracket. The positioning baffle extends towards the cover and has an arc-shaped notch that matches the diameter of the cover. In this embodiment, the positioning baffle extending towards the cover means that it extends with a flange towards the cover in the conveyor channel, and an arc-shaped notch is provided on the end face that contacts the cover, thus blocking and positioning the cover, facilitating positioning and taking pictures by the camera's image analysis device.
[0011] In a preferred embodiment of this invention, the light source assembly includes four sets of strip light sources. These strip light sources form a rectangle and are connected to the preparation stage, located at the bottom of the transparent plate. The four sets of strip light sources provide sufficient light to the bottom of the transparent plate, enabling the camera to capture clear photos.
[0012] In a preferred embodiment of this invention, the rotating arm includes a base, a first rotating arm, and a second rotating arm. The first rotating arm is rotatably connected to the base, and the second rotating arm is rotatably connected to the first rotating arm. A vacuum suction cup is connected to the bottom of the second rotating arm. In this embodiment, the second rotating arm is equipped with a rotating head, and a vacuum suction cup is located at the bottom of the rotating head. The vacuum suction cup is connected to a vacuum generator via a flexible hose, which can generate negative pressure to suction the cover and can also release the negative pressure to lower the cover.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] It can identify whether the lid needs to be rotated at a certain angle and by how much. After the robotic arm picks up the lid, it is installed onto the can. The identification process is accurate and improves work efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of one structure of the present utility model.
[0016] Figure 2 This is a schematic diagram of a robot component of this utility model.
[0017] Figure 3 This is a schematic diagram of the top structure of the preparation platform of this utility model.
[0018] Figure 4 This is a schematic diagram of the bottom structure of the preparation platform of this utility model.
[0019] Figure 5 This is a schematic diagram of the structure of the light source assembly of this utility model.
[0020] In the diagram: 1. Cover; 2. Preparation table; 3. Workbench; 4. Conveyor channel.
[0021] 5. Capping device; 6. Photoelectric detection device; 7. Positioning baffle.
[0022] 8. Transparent panel; 9. Camera image analysis device; 10. Camera
[0023] 11. Light source assembly; 12. Telescopic pressure head; 13. Robot assembly
[0024] 14. Vacuum suction cup 15. Limiting baffle 16. Adjusting frame
[0025] 17. Seat body; 18. First rotating arm; 19. Second rotating arm. Detailed Implementation
[0026] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.
[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0029] For examples, please refer to Figure 1-5 This utility model provides a technical solution:
[0030] A cap-retrieving and cap-placing device includes a cap 1 with a flat top, comprising a preparation platform 2 and a worktable 3. The inner side of the cap 1 is marked with an identifiable identifier. The preparation platform 2 is located on one side of the worktable 3. The upper part of the preparation platform 2 includes a conveying channel 4, a cap-pressing device 5, and a photoelectric detection device 6. The caps 1 are sequentially conveyed along the conveying channel 4. A positioning baffle 7 is located at the end of the conveying channel 4 closest to the worktable 3. The bottom of the end of the conveying channel 4 closest to the worktable 3 is a transparent plate 8. The preparation platform 2 is equipped with a camera image analysis device 9, which includes a camera 10 located below the transparent plate and a light source assembly 11. The transparent plate 8 has one or two cap positions. The camera 10 is aligned with the lower part of the first cap position closest to the worktable 3. The cap-pressing device 5 includes a telescopic pressure head 12 aligned with the upper center of the second cap position closest to the worktable 3. The photoelectric detection device 6 is located on the side of the first cap position closest to the worktable 3. The worktable 3 is equipped with a robot assembly 13, which includes a rotating arm with a vacuum suction cup 14 at its bottom.
[0031] Limiting baffles 15 are provided on both sides of the conveying channel 4. The spacing between the limiting baffles 15 is set to match the diameter of the cover 1. An adjustment elongated hole is provided at the bottom of the limiting baffles 15. The limiting baffles 15 extend outward at an angle at the first cover position.
[0032] The capping device 5 is equipped with an adjustment frame 16, which is connected to the side of the preparation table 2. The adjustment frame 16 is equipped with a cantilever that is suspended above the second cap position near the worktable 3. The telescopic pressure head is a telescopic cylinder telescopic rod connected to the bottom of the cantilever. The bottom of the adjustment frame 16 is equipped with an adjustment elongated hole.
[0033] The positioning baffle 7 is connected to the preparation table 2 via a fixed bracket. The positioning baffle 7 extends toward the cover 1 and is provided with an arc-shaped stop that matches the diameter of the cover 1.
[0034] The light source assembly 11 includes four sets of strip light sources. The strip light sources form a rectangle and are connected to the preparation stage 2 and located at the bottom of the transparent plate 8.
[0035] The rotating arm includes a base 17, a first rotating arm 18, and a second rotating arm 19. The first rotating arm 18 is rotatably connected to the base 17, and the second rotating arm 19 is rotatably connected to the first rotating arm 18. A vacuum suction cup 14 is connected to the bottom of the second rotating arm 19. The second rotating arm 19 is provided with a rotating head, and a vacuum suction cup 14 is provided at the bottom of the rotating head.
[0036] The working process of this utility model is as follows: The cover 1 is pushed onto the conveyor channel 4 of the preparation table 2 and arranged in a row with the front and back covers 1 close together. After the first cover reaches the end of the conveyor channel 4, it is blocked by the positioning baffle 7 and located on the transparent plate 8. After the photoelectric detection device 6 detects that the cover 1 is in place, the background management system instructs the telescopic pressure head of the cover pressing device 5 to press down and press down the second cover located behind the first cover, preventing the subsequent covers from being pushed forward. After the camera image analysis device 9 analyzes the position and rotation angle of the first cover, the background management system instructs the robot component 13 on the workbench 3 to rotate the rotating arm above the first cover and use the vacuum suction cup 14 to suck up the cover. Then, it instructs the rotating arm to rotate and move to the top of the can placed on the workbench 3 and place the cover on the designated can.
[0037] The vacuum suction cup 14 is connected to the vacuum generator through a hose, which can generate negative pressure to suction the cover, or release the negative pressure to put the cover down.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for removing and placing a lid, wherein the top of the lid is flat, characterized in that: Includes a preparation table and a workbench, and the inside of the cover is provided with an identifiable mark; The preparation table is located on one side of the workbench. The upper part of the preparation table is equipped with a conveyor channel, a capping device, and a photoelectric detection device. The caps are sequentially conveyed along the conveyor channel. A positioning baffle is located at the end of the conveyor channel closest to the workbench, and the bottom of that end is a transparent plate. The preparation table is equipped with a camera image analysis device, which includes a camera and a light source assembly located below the transparent plate. The transparent plate has one or two cap positions. The camera is aligned with the area below the first cap position closest to the workbench. The capping device includes a telescopic pressure head, which is aligned with the upper center of the second cap position closest to the workbench. The photoelectric detection device is located on the side of the first cap position closest to the workbench. The workbench is equipped with a robot component, which includes a rotating arm and a vacuum suction cup at the bottom of the rotating arm.
2. The cap-removing and cap-placing device according to claim 1, characterized in that: Limiting baffles are provided on both sides of the conveying channel. The spacing between the limiting baffles is set to match the diameter of the cover. An adjustment elongated hole is provided at the bottom of the limiting baffle. The limiting baffle extends obliquely outward at the first cover position.
3. The cap-removing and cap-placing device according to claim 1, characterized in that: The capping device is equipped with an adjustment frame, which is connected to the side of the preparation table. The adjustment frame is equipped with a cantilever that is suspended above the second cap position near the worktable. The telescopic pressure head is a telescopic cylinder telescopic rod connected to the lower part of the cantilever. The bottom of the adjustment frame is equipped with an adjustment elongated hole.
4. A cap-removing and cap-placing device according to claim 1, characterized in that: The positioning baffle is connected to the preparation table via a fixed bracket. The positioning baffle extends toward the cover and is provided with an arc-shaped stop that matches the diameter of the cover.
5. A cap-removing and cap-placing device according to claim 1, characterized in that: The light source assembly includes four sets of strip light sources, which form a rectangle and are connected to the preparation stage and located at the bottom of the transparent plate.
6. A cap-removing and cap-placing device according to claim 1, characterized in that: The rotating arm includes a base, a first rotating arm, and a second rotating arm. The first rotating arm is rotatably connected to the base, and the second rotating arm is rotatably connected to the first rotating arm. A vacuum suction cup is connected to the bottom of the second rotating arm.