A circular conveyor line for the production of charging docks

Abstract

This invention discloses a circular conveyor line for charging base production, relating to the field of material conveying technology. It includes a conveyor frame and multiple carriers. The conveyor frame is equipped with a chain and a drive unit, and a circular slide rail is mounted on the conveyor frame. Each carrier is slidably connected to the circular slide rail, and its inner side is connected to the chain. The circumference of the circular slide rail is 0.5% to 2% longer than the circumference of the chain. The circular slide rail includes a straight section and an arc section. Multiple charging base production stations are correspondingly distributed on the straight section, the length of which accounts for more than 40% of the circumference of the circular slide rail. A lifting bar is installed on the conveyor frame, and the lifting bar has lifting grooves. The width of the lifting groove is greater than the thickness of the chain, allowing the chain to fine-tune the carrier position during movement, thereby improving the stopping accuracy of the carriers at the production stations on the straight section. This invention solves the problem of insufficient positioning accuracy of carriers at processing positions caused by the cumulative error generated by the chain's long-term operation in existing circular conveyor lines.

Description

Technical Field

[0001] This invention relates to the field of material conveying technology, and more particularly to a ring conveyor line for the production of charging bases. Background Technology

[0002] With the development of intelligent manufacturing equipment, automated production lines, and flexible manufacturing units, charging dock manufacturers are increasingly adopting automated conveyor lines, circular conveyor systems, and automated workpiece transfer equipment to achieve continuous conveying and automated handling between multiple workstations. As a crucial component of automated logistics conveying systems, circular conveyor lines not only handle workpiece transport but also perform tasks such as workstation coordination, automatic positioning, and production cycle control, significantly impacting automated production efficiency and conveying accuracy. The production process of charging docks typically involves multiple steps, including shell assembly, circuit board installation, welding, testing, and packaging, all of which place high demands on production efficiency and automation levels.

[0003] In existing technologies, manufacturers of charging docks are increasingly inclined to adopt cyclic and modular conveyor systems, such as circular conveyor lines, to enable continuous flow and automatic distribution of workpieces between multiple workstations. However, traditional circular conveyor lines mostly use chains to drive carriers to move cyclically along the track. After the chains have been running for a long time, cumulative errors are easily generated, resulting in large deviations in the stopping positions of the carriers at various processing stations, making it difficult to meet the positioning accuracy requirements of precision assembly or inspection processes.

[0004] Therefore, existing circular conveyor lines suffer from insufficient positioning accuracy of the carrier at the processing position due to the cumulative error caused by the long-term operation of the chain. Summary of the Invention

[0005] The purpose of this invention is to provide a ring conveyor line for the production of charging docks, which solves the problem of insufficient positioning accuracy of the carrier at the processing position caused by the cumulative error generated by the long-term operation of the chain in the existing ring conveyor line.

[0006] To achieve this objective, the present invention adopts the following technical solution: A circular conveyor line for producing charging docks includes a conveyor frame and multiple carriers. The conveyor frame is provided with a chain and a drive component for driving the chain to move. A circular slide rail is installed on the conveyor frame. Each of the carriers is slidably connected to the annular slide rail and its inner side is connected to the chain; the circumference of the annular slide rail is 0.5% to 2% longer than the circumference of the chain; the annular slide rail includes a straight section and an arc section; multiple charging dock production stations are correspondingly distributed in the straight section; the length of the straight section accounts for more than 40% of the circumference of the annular slide rail. The conveyor frame is equipped with lifting bars distributed on the inner side of the straight section. Each lifting bar has a lifting groove that extends through both ends. The stepped surface of the lifting groove extends along the moving direction of the chain on the straight section. The width of the lifting groove is greater than the thickness of the chain, so that the chain can finely adjust the position of the carrier during movement, thereby improving the stopping accuracy of the carrier at the production station on the straight section.

[0007] Optionally, the multiple lifting bars are arranged at intervals, and the distance between two adjacent lifting bars on the same side of the straight section is less than 50% to 90% of the length of the lifting bar, so that the vehicle can obtain continuous support during the fine adjustment of the straight section along the annular slide rail.

[0008] Optionally, the lifting groove is provided with a first step surface, a second step surface and a third step surface in sequence along the vertical direction, and the bottom of the chain is in contact with the second step surface; The distance between the first step surface and the second step surface is less than the distance between the second step surface and the third step surface, and the height of the annular slide rail, the third step surface, and the chain in the vertical direction increases progressively.

[0009] Optionally, the driving component includes a driving sprocket and a driven sprocket rotatably connected to the conveyor frame and arranged opposite to each other, and a reducer and a conveyor motor are installed at the bottom of the conveyor frame; The output shaft of the reducer is connected to the drive sprocket. The drive sprocket and the driven sprocket have the same outer diameter and are meshed with the chain. The tooth pitch of the drive sprocket is matched with the chain pitch and the width of the lifting groove, so that when the chain slides along the lifting groove in the straight section, the vehicle is finely adjusted to the preset stopping position.

[0010] Optionally, a first cover plate and a second cover plate are installed on the conveyor frame, and the first cover plate and the second cover plate together are used to fully cover the chain, the driving sprocket and the driven sprocket; A bellows cover for partially covering the circular track is installed between two adjacent vehicles. The first cover plate and the second cover plate are both open on the side facing the bellows cover, and a guide airflow channel is formed on the first cover plate along the direction of chain movement, so that the vehicle moving along the straight section can obtain air-assisted guidance.

[0011] Optionally, the carrier has a positioning groove on the side away from the chain, and a positioning component is installed on the conveyor frame; the positioning component includes a positioning cylinder and a positioning column, the positioning cylinder is used to drive the positioning column to move so that the positioning column moves closer to or away from the positioning groove.

[0012] Optionally, the positioning assembly further includes a positioning link rotatably connected to the conveyor frame, wherein a first connecting plate and a second connecting plate are fixedly installed on the positioning link at intervals, and the conveyor frame is provided with a positioning notch for providing movement space for the movement of the first connecting plate; The positioning column is fixedly installed on the first connecting plate, one end of the positioning cylinder is hinged to the conveyor frame, and the other end of the positioning cylinder is hinged to the second connecting plate.

[0013] Optionally, each of the positioning links is equipped with two first connecting plates, and the distance between the second connecting plate and one of the first connecting plates is not equal to the distance between the second connecting plate and the other first connecting plate; The positioning cylinder is used to drive the two first connecting plates to swing so that the two positioning columns can simultaneously position the two carriers.

[0014] Optionally, the carrier includes a platform connected to the chain, and the bottom of the platform is equipped with a plurality of rollers that are tactilely connected to the inner and outer sides of the annular slide rail; The top of the platform is equipped with a first carrier ring and a second carrier ring. The platform is equipped with a positioning protrusion located inside the first carrier ring, and a positioning frame is installed on the second carrier ring. The main shell of the charging base is positioned and inserted into the positioning protrusion, and the charging base cover is positioned and inserted into the positioning frame.

[0015] Optionally, the platform includes a first carrier plate, a second carrier plate, and a third carrier plate connected sequentially upward in a vertical direction. A plurality of rollers are rotatably connected to the first carrier plate. The first carrier plate is connected to the chain. The positioning protrusion, the first carrier ring, and the second carrier ring are respectively fixedly connected to the third carrier plate.

[0016] Optionally, the thickness of the first carrier plate in the vertical direction is greater than the thickness of the second carrier plate and the third carrier plate in the vertical direction, and the projected area of ​​the first carrier plate in the vertical direction, the projected area of ​​the second carrier plate in the vertical direction, and the projected area of ​​the third carrier plate in the vertical direction show an increasing trend.

[0017] Optionally, a positioning block is fixedly installed on the side of the first carrier plate away from the chain, the positioning block having a positioning groove, and a mounting frame connected to the chain is provided on the side of the first carrier plate close to the chain.

[0018] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a circular conveyor line for charging dock production. By setting the circumference of the circular slide rail to be 0.5% to 2% greater than the chain circumference, a certain relative floating space is created between the chain and the carrier, effectively preventing the cumulative errors generated by the chain during long-term operation from being directly transmitted to the carrier. Simultaneously, the carrier is slidably connected to the circular slide rail, making its operation more stable and reliable. Furthermore, a support bar is provided on the inner side of the straight section of the circular slide rail, with a through-hole support groove on the support bar. The width of the support groove is greater than the chain thickness, giving the chain lateral fine-tuning capability during carrier movement. Combined with the structure where the stepped surface of the support groove extends along the chain's movement direction, the carrier can adaptively correct its position before entering each production station, significantly improving the carrier's stopping accuracy at each production station on the straight section. By arranging multiple production stations on a straight section that accounts for more than 40% of the total length, it is beneficial to complete high-precision assembly and inspection processes within a longer straight area, avoiding the adverse effects of curved sections on the carrier's positioning accuracy. Therefore, the present invention solves the problem of insufficient positioning accuracy of the carrier at the processing position in the prior art of the circular conveyor line due to the cumulative error caused by the long-term operation of the chain. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0020] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0021] Figure 1 This is a three-dimensional structural diagram of a ring conveyor line for producing charging docks, provided by an embodiment of the present invention. Figure 2 for Figure 1 A magnified structural diagram at point A; Figure 3 This is a schematic diagram of a first cross-sectional structure of a ring conveyor line for producing charging docks, provided in an embodiment of the present invention. Figure 4 for Figure 3 A magnified structural diagram at point B; Figure 5 This is a schematic diagram of a second cross-sectional structure of a ring conveyor line for producing charging docks, provided in an embodiment of the present invention. Figure 6 for Figure 5 A magnified structural diagram at point C; Figure 7 for Figure 5 A magnified structural diagram at point D; Figure 8 This is one of the three-dimensional structural schematic diagrams of a carrier in a ring conveyor line for producing charging docks, provided by an embodiment of the present invention; Figure 9 This is a second three-dimensional structural schematic diagram of a carrier in a ring conveyor line for producing charging docks, provided as an embodiment of the present invention. Figure 10 This is one of the three-dimensional structural schematic diagrams of a positioning component in a ring conveyor line for charging dock production provided by an embodiment of the present invention; Figure 11 This is a second three-dimensional structural schematic diagram of a positioning component in a ring conveyor line for charging dock production, provided as an embodiment of the present invention.

[0022] Illustration: 10. Conveyor frame; 11. Positioning notch; 20. Carrier; 21. Platform; 211. First carrier plate; 212. Second carrier plate; 213. Third carrier plate; 214. Positioning block; 2141. Positioning groove; 215. Mounting frame; 22. Roller; 23. First carrier ring; 24. Second carrier ring; 25. Positioning protrusion; 26. Positioning frame; 30. Chain; 41. Drive sprocket; 42. Driven sprocket; 43. Reducer; 44. Conveyor motor; 50. Circular slide rail; 51. Straight section; 52. Arc section; 60. Lifting bar; 61. Lifting groove; 611. First step surface; 612. Second step surface; 613. Third step surface; 71. First cover plate; 72. Second cover plate; 73. Bellows cover; 80. Positioning assembly; 81. Positioning cylinder; 82. Positioning column; 83. Positioning connecting rod; 84. First connecting plate; 85. Second connecting plate. Detailed Implementation

[0023] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] This invention provides a circular conveyor line for the production of charging docks, such as... Figures 1 to 11 As shown, it includes a conveyor frame 10 and multiple carriers 20. The conveyor frame 10 is provided with a chain 30 and a drive component for driving the chain 30 to move. An annular slide rail 50 is installed on the conveyor frame 10. Each carrier 20 is slidably connected to the annular slide rail 50 and its inner side is connected to the chain 30; the circumference of the annular slide rail 50 is 0.5% to 2% longer than the circumference of the chain 30. The annular slide rail 50 includes a straight section 51 and an arc section 52. Multiple charging station production stations are correspondingly distributed on the straight section 51. The length of the straight section 51 accounts for more than 40% of the circumference of the annular slide rail 50. The conveyor frame 10 is equipped with lifting bars 60 distributed inside the straight section 51. Each lifting bar 60 has a lifting groove 61 extending through both ends. The stepped surface of the lifting groove 61 extends along the moving direction of the chain 30 on the straight section 51. The width of the lifting groove 61 is greater than the thickness of the chain 30, allowing the chain 30 to fine-tune the position of the carrier 20 during movement, thereby improving the stopping accuracy of the carrier 20 at the production station on the straight section 51. In this embodiment, the number and sequence of charging station production positions can be adjusted according to the actual processing situation of the charging stations.

[0026] It should be noted that the circular conveyor line for charging dock production provided by this invention sets the circumference of the circular slide rail 50 to be 0.5% to 2% greater than the circumference of the chain 30, creating a certain relative floating space between the chain 30 and the carrier 20. This effectively prevents the cumulative error generated by the chain 30 during long-term operation from being directly transmitted to the carrier 20. Simultaneously, the carrier 20 is slidably connected to the circular slide rail 50, making its operation more stable and reliable. Furthermore, a lifting bar 60 is provided on the inner side of the straight section 51 of the circular slide rail 50, and a through lifting groove 61 is formed on the lifting bar 60. The width of the lifting groove 61 is greater than the thickness of the chain 30, giving the chain 30 lateral fine-tuning capability during the movement of the carrier 20. Combined with the structure where the stepped surface of the lifting groove 61 extends along the moving direction of the chain 30, the carrier 20 can perform adaptive position correction before entering each production station, thereby significantly improving the stopping accuracy of the carrier 20 at each production station on the straight section 51. By arranging multiple production stations on a straight section 51 that accounts for more than 40% of the total length, it is beneficial to complete high-precision assembly and inspection processes within a longer straight area, thus avoiding the adverse effects of the arc section 52 on the positioning accuracy of the carrier 20. Therefore, this invention solves the problem in the prior art where the positioning accuracy of the carrier 20 at the processing station is insufficient due to the cumulative error caused by the long-term operation of the chain 30 in the circular conveyor line.

[0027] In this invention, the circumference of the annular slide rail 50 is set to be 0.5% to 2% greater than the circumference of the chain 30. This range is not arbitrarily set, but is determined based on a comprehensive balance between the release of transmission error of the chain 30 and the running stability of the carrier 20. Specifically, when the difference between the circumference of the annular slide rail 50 and the circumference of the chain 30 is less than 0.5%, the relative floating space between the chain 30 and the carrier 20 is small, making it difficult to effectively absorb the accumulated error generated by the chain 30 during long-term operation. As a result, the error will still be transmitted to the carrier 20, thus affecting its positioning accuracy at each production station. When the difference is greater than 2%, the relative freedom between the chain 30 and the carrier 20 is too large, which can easily lead to instability in the carrier 20 during operation, such as swaying, deviation, or response lag, thereby affecting the smoothness of conveying and the reliability of positioning.

[0028] Therefore, by controlling the difference between the circumference of the annular slide rail 50 and the circumference of the chain 30 within the range of 0.5% to 2%, the chain 30 can provide the necessary traction force while driving the carrier 20 to move, and can also achieve adaptive fine adjustment of the position of the carrier 20 with the cooperation of the lifting groove 61. Thus, while ensuring the stability of the conveying, the impact of the cumulative error generated during the transmission of the chain 30 on the positioning accuracy is effectively reduced.

[0029] Furthermore, the length of the straight section 51 accounts for more than 40% of the circumference of the annular slide rail 50, which is also determined based on a comprehensive consideration of positioning accuracy requirements and structural layout space. When the length of the straight section 51 is relatively low, the linear travel available for fine-tuning the position of the carrier 20 before entering each production station is insufficient, which is not conducive to achieving sufficient error correction. However, when the length of the straight section 51 is relatively high, it can provide a longer stable guide path for the carrier 20, allowing the fine-tuning function of the chain 30 in the lifting groove 61 to be fully utilized, thereby improving the stopping accuracy and consistency of the carrier 20 at each production station.

[0030] Furthermore, the perimeter difference design and the lifting groove 61 structure work together seamlessly and are indispensable: if only the perimeter difference is set without the lifting groove 61, the position of the carrier 20 lacks effective constraint, making stable fine-tuning difficult; if only the lifting groove 61 is set without the perimeter difference, the necessary relative floating space between the chain 30 and the carrier 20 is lacking, similarly making error release and position correction difficult. Therefore, the combined design of the above two elements effectively eliminates the accumulated errors generated during the chain 30 transmission process and enables high-precision docking of the carrier 20. Moreover, the above combination is not a simple superposition, but rather forms a synergistic relationship between the chain 30 drive, the floating space, and the guiding structure, thereby achieving continuous correction and stable control of the carrier 20's position.

[0031] like Figures 1 to 4As shown, multiple lifting bars 60 are arranged at intervals, and the distance between two adjacent lifting bars 60 on the same side of the straight section 51 is less than 50% to 90% of the length of the lifting bar 60, so that the vehicle 20 can obtain continuous support during the fine adjustment of the straight section 51 along the annular slide rail 50.

[0032] In practical implementation, by arranging multiple support bars 60 at intervals and controlling the spacing between two adjacent support bars 60 on the same side of the straight section 51 to be within 50% to 90% of the length of the support bar 60, a partially overlapping or near-continuous support area is formed between adjacent support bars 60. This ensures that the carrier 20 can always obtain stable support during movement and fine-tuning along the straight section 51 of the annular slide rail 50. This structure can effectively avoid situations where the carrier 20 is suspended or undersupported when transitioning between support bars 60, reduce the attitude fluctuation and shaking of the carrier 20, and improve the smoothness of the carrier 20's operation. At the same time, during the fine-tuning of the carrier 20's position by the chain 30, continuous support can prevent the carrier 20's position adjustment from being inaccurate due to the chain 30 losing local support, thereby further improving the positioning accuracy of the carrier 20 at each production station.

[0033] like Figure 4 As shown, the lifting groove 61 is provided with a first step surface 611, a second step surface 612 and a third step surface 613 in sequence along the vertical direction, and the bottom of the chain 30 is in contact with the second step surface 612. The distance between the first step surface 611 and the second step surface 612 is less than the distance between the second step surface 612 and the third step surface 613. The height of the annular slide rail 50, the third step surface 613, and the chain 30 increases in the vertical direction. In this embodiment, the first step surface 611, the second step surface 612, and the third step surface 613 are all planar.

[0034] In specific implementation, by sequentially arranging a first step surface 611, a second step surface 612, and a third step surface 613 in the vertical direction of the lifting groove 61, and ensuring that the bottom of the chain 30 is in contact with the second step surface 612, the chain 30 obtains stable and reliable support during operation, which helps to ensure the smoothness of transmission. At the same time, by setting the distance between the first step surface 611 and the second step surface 612 to be smaller than the distance between the second step surface 612 and the third step surface 613, and arranging the annular slide rail 50, the third step surface 613, and the chain 30 in an increasing order in the vertical direction, a reasonable height difference is formed between the carrier 20 and the chain 30. Thus, during the process of the chain 30 driving the carrier 20, it is ensured that the chain 30 has a certain amount of room to move, while the step structure limits and guides the chain 30, preventing the chain 30 from jumping or deviating.

[0035] Furthermore, the multi-level stepped surface design enables the chain 30 to provide graded support and guidance within the lifting groove 61, which helps to provide a stable force environment during the fine-tuning of the carrier 20, reduces the cumulative error caused by the unstable position of the chain 30, and improves the positioning accuracy of the carrier 20 at each production station.

[0036] like Figures 5 to 7 As shown, the driving components include a driving sprocket 41 and a driven sprocket 42 that are rotatably connected to the conveyor frame 10 and arranged opposite to each other. A reducer 43 and a conveyor motor 44 are installed at the bottom of the conveyor frame 10. The output shaft of the reducer 43 is connected to the drive sprocket 41. The drive sprocket 41 and the driven sprocket 42 have the same outer diameter and are meshed with the chain 30. The tooth pitch of the drive sprocket 41 is matched with the pitch of the chain 30 and the width of the lifting groove 61, so that when the chain 30 slides along the lifting groove 61 in the straight section 51, the carrier 20 is finely adjusted to the preset stopping position.

[0037] In practical implementation, the use and coordination of the conveyor motor 44, reducer 43, drive sprocket 41, and driven sprocket 42 make the chain 30 transmission more stable and reliable. The drive sprocket 41 and driven sprocket 42 have the same outer diameter and are arranged opposite each other, which helps ensure consistent tension of the chain 30 in the circular path, reducing slack or jumping during operation, thereby improving overall conveying accuracy and operational smoothness. Simultaneously, by matching the tooth pitch of the drive sprocket 41 with the chain pitch and the width of the lifting groove 61, a coordinated relationship is formed between the chain 30 and the lifting groove 61 during transmission. When the chain 30 slides along the lifting groove 61 in the straight section 51, precise pitch-based adjustment of the carrier 20's position can be achieved, allowing the carrier 20 to gradually correct positional deviations as it approaches each production station, thus accurately stopping at the preset position.

[0038] In addition, the setting of the reducer 43 can reduce the output speed of the conveyor motor 44 and increase the output torque of the conveyor motor 44, making the operation of the chain 30 more stable and controllable, which is conducive to improving the precision of the fine adjustment process and avoiding positioning errors caused by speed fluctuations.

[0039] like Figure 6 and Figure 7 As shown, a first cover plate 71 and a second cover plate 72 are installed on the conveyor frame 10. The first cover plate 71 and the second cover plate 72 are used together to fully cover the chain 30, the driving sprocket 41 and the driven sprocket 42. A bellows cover 73 for partially covering the circular track is installed between two adjacent vehicles 20. The first cover plate 71 and the second cover plate 72 are both open on the side facing the bellows cover 73. A guide airflow channel is formed on the first cover plate 71 along the movement direction of the chain 30, so that the vehicle 20 moving along the straight section 51 can obtain air-assisted guidance.

[0040] In specific implementation, by setting a first cover plate 71 and a second cover plate 72 on the conveyor frame 10 to fully cover the chain 30, drive sprocket 41, and driven sprocket 42, dust and impurities are effectively prevented from entering the transmission system, reducing wear on the chain 30 and sprockets, improving the stability and service life of the equipment, and enhancing the overall structural safety. Furthermore, a bellows cover 73 is installed between two adjacent carriers 20 to partially cover the circular track. This provides dynamic protection for the track during the movement of the carriers 20, preventing foreign objects from entering the slide rail area, thus ensuring smooth sliding of the carriers 20 and reducing maintenance frequency.

[0041] Furthermore, by setting the first cover plate 71 and the second cover plate 72 as open structures on the side facing the bellows cover 73, and forming a guide airflow channel in the first cover plate 71 along the movement direction of the chain 30, the equipment can generate directional airflow during operation. This airflow can provide auxiliary guidance for the carrier 20 moving along the straight section 51, helping to reduce lateral deviation and vibration of the carrier 20 during operation and improve operational stability. At the same time, the air guidance effect can also play a certain role in cleaning, reducing dust accumulation on the track and carrier 20 surface, further improving positioning accuracy and the cleanliness of the product processing environment.

[0042] like Figure 2 , Figure 9 and Figure 10 As shown, a positioning groove 2141 is provided on the side of the carrier 20 away from the chain 30, and a positioning component 80 is installed on the conveyor frame 10; the positioning component 80 includes a positioning cylinder 81 and a positioning column 82. The positioning cylinder 81 is used to drive the positioning column 82 to move so that the positioning column 82 approaches or moves away from the positioning groove 2141.

[0043] In specific implementation, a positioning groove 2141 is set on the side of the carrier 20 away from the chain 30, and a positioning assembly 80 including a positioning cylinder 81 and a positioning column 82 is set on the conveyor frame 10, enabling the carrier 20 to achieve active and precise positioning when transported to the corresponding production station. Specifically, the positioning cylinder 81 drives the positioning column 82 to move towards the positioning groove 2141. When the positioning column 82 is inserted into the positioning groove 2141, it can rigidly limit the carrier 20, thereby eliminating any residual positional errors that may exist in the carrier 20 during the chain 30 driving and fine-tuning process, significantly improving the final positioning accuracy and repeatability of the carrier 20 at the processing station. At the same time, this positioning method achieves automated operation through cylinder control, and can selectively position and release according to the needs of the station without affecting the continuous transport of the carrier 20, thus improving the automation level and work efficiency of the production line.

[0044] like Figures 9 to 11As shown, the positioning assembly 80 also includes a positioning link 83 rotatably connected to the conveyor frame 10. A first connecting plate 84 and a second connecting plate 85 are fixedly installed on the positioning link 83 at intervals. A positioning notch 11 is installed on the conveyor frame 10 to provide movement space for the movement of the first connecting plate 84. The positioning column 82 is fixedly installed on the first connecting plate 84. One end of the positioning cylinder 81 is hinged to the conveyor frame 10, and the other end of the positioning cylinder 81 is hinged to the second connecting plate 85. It should be noted that the chain 30 is not used for final positioning, but only for coarse and fine adjustments. The final precise positioning is completed by the positioning assembly 80.

[0045] In specific implementation, by setting a positioning link 83 rotatably connected to the conveyor frame 10, and fixing a first connecting plate 84 and a second connecting plate 85 on the positioning link 83, the positioning assembly 80 forms a linkage-type transmission structure. This transforms the linear extension and retraction motion of the positioning cylinder 81 into the swinging or compound motion of the positioning column 82, which is beneficial for achieving a smoother and more controllable positioning process. Specifically, by setting a positioning notch 11 on the conveyor frame 10, clearance space is provided for the movement of the first connecting plate 84, ensuring that the first connecting plate 84 is not interfered with by the structure during swinging, thereby guaranteeing that the positioning column 82 can smoothly enter and exit the positioning groove 2141, improving the reliability of the positioning action.

[0046] Meanwhile, the positioning post 82 is fixed to the first connecting plate 84, and the positioning cylinder 81 drives the positioning linkage 83 to move through the hinge with the second connecting plate 85. This separate arrangement of drive and execution optimizes the spatial layout, reduces the requirements for installation space, and reduces the impact force generated when the positioning cylinder 81 directly acts on the positioning post 82, thereby improving the stability of the positioning process and extending the service life of each component. In addition, the linkage structure can also buffer and amplify the force to a certain extent, making the positioning post 82 enter the positioning groove 2141 more smoothly and accurately, further improving the positioning accuracy and repeatability of the carrier 20.

[0047] like Figure 11 As shown, each positioning link 83 is equipped with two first connecting plates 84, and the distance between the second connecting plate 85 and one of the first connecting plates 84 is not equal to the distance between the second connecting plate 85 and the other first connecting plate 84. The positioning cylinder 81 is used to drive the two first connecting plates 84 to swing so that the two positioning columns 82 can simultaneously position the two carriers 20.

[0048] In specific implementation, by setting two first connecting plates 84 on each positioning link 83, and making the distance between the second connecting plate 85 and the two first connecting plates 84 unequal, the positioning link 83 can form an unequal-arm lever structure when driven by the positioning cylinder 81, thereby achieving coordinated movement of the positioning posts 82 at different positions. Specifically, when the positioning cylinder 81 drives the positioning link 83 to swing, the two first connecting plates 84 drive the corresponding two positioning posts 82 to move synchronously, thereby simultaneously positioning the two carriers 20, effectively reducing the number of positioning components 80, simplifying the overall structure, and reducing equipment costs.

[0049] Meanwhile, since the distance between the second connecting plate 85 and the two first connecting plates 84 is not equal, the movement stroke or force of the two positioning columns 82 can be adjusted differently according to the actual needs of different carrier positions 20. In addition, this structure can improve space utilization and mechanism integration while ensuring synchronous positioning effect, reduce the number of driving components, thereby reducing the energy consumption and failure rate of the entire conveyor line, and further improving the operational stability and economy of the entire conveyor line.

[0050] like Figure 8 and Figure 9 As shown, the carrier 20 includes a platform 21 connected to the chain 30, and a plurality of rollers 22 are mounted on the bottom of the platform 21 and are tactilely connected to the inner and outer sides of the annular slide rail 50. A first carrier ring 23 and a second carrier ring 24 are mounted on the top of the platform 21. A positioning protrusion 25 located inside the first carrier ring 23 is mounted on the platform 21, and a positioning frame 26 is mounted on the second carrier ring 24. The main shell of the charging base is positioned and inserted into the positioning protrusion 25, and the charging base cover is positioned and inserted into the positioning frame 26. In this embodiment, the platform 21 and the annular slide rail 50 are spaced apart.

[0051] In practice, by setting multiple rollers 22 at the bottom of the platform 21 and rollingly connected to the inner and outer sides of the annular slide rail 50, the carrier 20 changes from sliding friction to rolling friction during the conveying process. This effectively reduces running resistance and wear, improves running stability, and helps extend the service life of the equipment. Simultaneously, the multiple rollers 22 are respectively arranged on the inner and outer sides of the annular slide rail 50, forming a double-sided limiting support structure for the platform 21. This effectively prevents the carrier 20 from tilting or swaying during operation, further improving running stability and positioning accuracy.

[0052] Furthermore, by setting a first carrier ring 23 and a second carrier ring 24 on the top of the stage 21, and respectively cooperating with the positioning protrusion 25 and the positioning frame 26, the main shell of the charging base and the charging base cover can achieve partitioned positioning and independent fixation, thereby improving the positioning accuracy and assembly consistency during the assembly process. Specifically, the positioning protrusion 25 engages with the main shell of the charging base, facilitating rapid and accurate initial positioning; the positioning frame 26 is used to limit and support the charging base cover, ensuring its stability during subsequent assembly or testing, thus preventing misalignment or loosening.

[0053] like Figure 8 and Figure 9 As shown, the platform 21 includes a first platform 211, a second platform 212 and a third platform 213 connected in sequence along the vertical direction. Multiple rollers 22 are rotatably connected to the first platform 211. The first platform 211 is connected to the chain 30. The positioning protrusion 25, the first carrier ring 23 and the second carrier ring 24 are respectively fixedly connected to the third platform 213.

[0054] In specific implementation, by setting the platform 21 as a layered structure of a first carrier plate 211, a second carrier plate 212, and a third carrier plate 213 connected sequentially in the vertical direction, the carrier 20 can be functionally arranged in zones, which is beneficial to optimizing the overall structural stress and space utilization. Among them, multiple rollers 22 are set on the first carrier plate 211 and connected to the chain 30, so that the transmission and guidance of the carrier 20 are concentrated in the bottom structure, which helps to lower the center of gravity of the carrier 20, improve the stability during operation, and reduce swaying and deviation.

[0055] Meanwhile, the positioning protrusion 25, the first carrier ring 23, and the second carrier ring 24 are all located on the third carrier plate 213, concentrating the positioning and assembly of the workpiece in the upper area. This avoids interference with the bottom transmission structure, improving assembly accuracy and ease of operation. Furthermore, the intermediate second carrier plate 212 acts as a transition support, enhancing the rigidity and strength of the overall structure. This prevents the platform 21 from deforming during workpiece loading and operation, further ensuring the positioning accuracy and operational stability of the carrier 20.

[0056] like Figure 8 and Figure 9 As shown, the thickness of the first carrier plate 211 in the vertical direction is greater than the thickness of the second carrier plate 212 and the third carrier plate 213 in the vertical direction, and the projected area of ​​the first carrier plate 211 in the vertical direction, the projected area of ​​the second carrier plate 212 in the vertical direction, and the projected area of ​​the third carrier plate 213 in the vertical direction show an increasing trend.

[0057] In practice, by making the thickness of the first carrier plate 211 in the vertical direction larger, the first carrier plate 211 has higher structural strength and load-bearing capacity, thereby enabling better installation of the roller 22 and connection with the chain 30, ensuring the stability of the carrier 20 during conveying and stress, and reducing the possibility of deformation of the bottom transmission support part.

[0058] Meanwhile, by making the projected areas of the first carrier plate 211, the second carrier plate 212, and the third carrier plate 213 increase in the vertical direction, the platform 21 forms a hierarchical structure that gradually unfolds from bottom to top. On the one hand, this helps to retain a relatively compact transmission and guiding space at the bottom, avoiding interference with components such as the annular slide rail 50, the chain 30, and the roller 22; on the other hand, it allows for a larger installation and positioning area at the top, facilitating the arrangement of workpiece positioning structures such as the positioning protrusion 25, the first carrier ring 23, and the second carrier ring 24, thereby improving the support stability and positioning reliability of the charging base main shell and charging base cover.

[0059] In addition, this gradually increasing structural layout from bottom to top is conducive to achieving a reasonable transition of forces on the vehicle 20, so that the lower layer mainly undertakes the transmission and support functions, the middle layer plays a connecting and transition role, and the upper layer mainly undertakes the assembly and positioning functions, thereby improving the overall structure's coordination and stability.

[0060] like Figure 8 and Figure 9 As shown, a positioning block 214 is fixedly installed on the side of the first carrier plate 211 away from the chain 30. The positioning block 214 has a positioning groove 2141. A mounting frame 215 connected to the chain 30 is provided on the side of the first carrier plate 211 closest to the chain 30. In this embodiment, the mounting frame 215 is fastened to the chain 30 by pins and retaining rings. In this embodiment, the positioning block 214 and the first carrier plate 211 can be fastened by screws or welded together.

[0061] In specific implementation, by fixing a positioning block 214 on the side of the first carrier plate 211 away from the chain 30, and opening a positioning groove 2141 on the positioning block 214, the positioning structure of the carrier 20 is concentrated on the side away from the chain 30, thereby forming a functional separation from the transmission area of ​​the chain 30, avoiding the positioning operation being interfered with by the movement of the chain 30, which is conducive to improving the positioning accuracy and positioning stability of the carrier 20 at the production station.

[0062] Meanwhile, the positioning block 214 is fixedly installed on the first carrier plate 211, which can improve the installation strength and structural rigidity of the positioning groove 2141, making the force more stable when the positioning column 82 cooperates with the positioning groove 2141, reducing positioning errors caused by local deformation or shaking, thereby further improving the repeatability of positioning accuracy. In addition, a mounting frame 215 connected to the chain 30 is set on the side of the first carrier plate 211 near the chain 30, so that a relatively stable connection interface is formed between the chain 30 and the carrier 20, which facilitates the reliable transmission of the traction force of the chain 30 to the carrier 20, ensuring that the carrier 20 runs smoothly along the annular slide rail 50. This arrangement also separates the positioning structure and the transmission connection structure on both sides of the first carrier plate 211, which is conducive to optimizing the spatial layout and improving the overall structural compactness and assembly convenience.

[0063] Working Principle: This invention provides a circular conveyor line for charging dock production. By setting the circumference of the circular slide rail 50 to be 0.5% to 2% greater than the circumference of the chain 30, a certain relative floating space is formed between the chain 30 and the carrier 20, effectively preventing the cumulative error generated by the chain 30 during long-term operation from being directly transmitted to the carrier 20. Simultaneously, the carrier 20 is slidably connected to the circular slide rail 50, making its operation more stable and reliable. Furthermore, a lifting bar 60 is provided on the inner side of the straight section 51 of the circular slide rail 50, and a through lifting groove 61 is formed on the lifting bar 60. The width of the lifting groove 61 is greater than the thickness of the chain 30, giving the chain 30 lateral fine-tuning capability during the movement of the carrier 20. Combined with the structure where the stepped surface of the lifting groove 61 extends along the moving direction of the chain 30, the carrier 20 can perform adaptive position correction before entering each production station, thereby significantly improving the stopping accuracy of the carrier 20 at each production station on the straight section 51. By arranging multiple production stations on a straight section 51 that accounts for more than 40% of the total length, it is beneficial to complete high-precision assembly and inspection processes within a longer straight area, thus avoiding the adverse effects of the arc section 52 on the positioning accuracy of the carrier 20. Therefore, this invention solves the problem in the prior art where the positioning accuracy of the carrier 20 at the processing station is insufficient due to the cumulative error caused by the long-term operation of the chain 30 in the circular conveyor line.

[0064] In practical applications, this invention can be used as an intelligent conveying system in automated production lines. By forming a continuous, cyclical conveying pattern using multiple carriers, it enables automatic workpiece transfer, handling, and positioning. This system can work collaboratively with intelligent manufacturing equipment such as robotic assembly units, automatic inspection units, and automatic packaging units to form a flexible automated production line.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An endless conveyor line for the production of charging stations, characterized in that, It includes a conveyor frame and multiple carriers, the conveyor frame is provided with a chain and a drive component for driving the chain to move, and the conveyor frame is equipped with an annular slide rail; Each of the carriers is slidably connected to the annular slide rail and its inner side is connected to the chain; the circumference of the annular slide rail is 0.5% to 2% longer than the circumference of the chain; the annular slide rail includes a straight section and an arc section; multiple charging dock production stations are correspondingly distributed in the straight section; the length of the straight section accounts for more than 40% of the circumference of the annular slide rail. The conveyor frame is equipped with lifting bars distributed on the inner side of the straight section. Each lifting bar has a lifting groove that extends through both ends. The stepped surface of the lifting groove extends along the moving direction of the chain on the straight section. The width of the lifting groove is greater than the thickness of the chain, so that the chain can finely adjust the position of the carrier during movement, thereby improving the stopping accuracy of the carrier at the production station on the straight section.

2. The endless conveyor line for the production of charging stations according to claim 1, characterized in that, The multiple lifting bars are arranged at intervals, and the distance between two adjacent lifting bars on the same side of the straight section is less than 50% to 90% of the length of the lifting bar, so that the vehicle can obtain continuous support during the fine adjustment of the straight section along the annular slide rail.

3. The endless conveyor line for the production of charging stations according to claim 1, characterized in that, The driving component includes a driving sprocket and a driven sprocket rotatably connected to the conveyor frame and arranged opposite to each other; a reducer and a conveyor motor are installed at the bottom of the conveyor frame. The output shaft of the reducer is connected to the drive sprocket. The drive sprocket and the driven sprocket have the same outer diameter and are meshed with the chain. The tooth pitch of the drive sprocket is matched with the chain pitch and the width of the lifting groove, so that when the chain slides along the lifting groove in the straight section, the vehicle is finely adjusted to the preset stopping position.

4. The annular conveyor line for the production of charging stations according to claim 3, characterized in that, The conveyor frame is equipped with a first cover plate and a second cover plate, which together are used to fully cover the chain, the drive sprocket and the driven sprocket; A bellows cover for partially covering the circular track is installed between two adjacent vehicles. The first cover plate and the second cover plate are both open on the side facing the bellows cover, and a guide airflow channel is formed on the first cover plate along the direction of chain movement, so that the vehicle moving along the straight section can obtain air-assisted guidance.

5. The circular conveyor line for producing charging docks according to claim 1, 3, or 4, characterized in that, The carrier has a positioning groove on the side away from the chain, and a positioning component is installed on the conveyor frame; the positioning component includes a positioning cylinder and a positioning column, the positioning cylinder is used to drive the positioning column to move so that the positioning column is closer to or away from the positioning groove.

6. The circular conveyor line for producing charging docks according to claim 5, characterized in that, The positioning component further includes a positioning link rotatably connected to the conveyor frame. A first connecting plate and a second connecting plate are fixedly installed on the positioning link at intervals. The conveyor frame is provided with a positioning notch for providing movement space for the movement of the first connecting plate. The positioning column is fixedly installed on the first connecting plate, one end of the positioning cylinder is hinged to the conveyor frame, and the other end of the positioning cylinder is hinged to the second connecting plate.

7. The circular conveyor line for producing charging docks according to claim 1, characterized in that, The carrier includes a platform connected to the chain, and the bottom of the platform is equipped with a plurality of rollers that are tactilely connected to the inner and outer sides of the annular slide rail. The top of the platform is equipped with a first carrier ring and a second carrier ring. The platform is equipped with a positioning protrusion located inside the first carrier ring, and a positioning frame is installed on the second carrier ring. The main shell of the charging base is positioned and inserted into the positioning protrusion, and the charging base cover is positioned and inserted into the positioning frame.

8. The circular conveyor line for producing charging docks according to claim 7, characterized in that, The platform includes a first carrier plate, a second carrier plate, and a third carrier plate connected vertically upwards in sequence. A plurality of rollers are rotatably connected to the first carrier plate. The first carrier plate is connected to the chain. The positioning protrusion, the first carrier ring, and the second carrier ring are respectively fixedly connected to the third carrier plate.

9. The circular conveyor line for producing charging docks according to claim 8, characterized in that, The thickness of the first carrier plate along the vertical direction is greater than that of the second carrier plate and the third carrier plate along the vertical direction, and the projected area of ​​the first carrier plate, the projected area of ​​the second carrier plate, and the projected area of ​​the third carrier plate along the vertical direction show an increasing trend.

10. The circular conveyor line for producing charging docks according to claim 8 or 9, characterized in that, A positioning block is fixedly installed on the side of the first carrier plate away from the chain, and the positioning block has a positioning groove. The side of the first carrier plate close to the chain has a mounting frame connected to the chain.

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