Automotive wiring harness routing assembly system

Abstract

The application relates to an automobile wire harness wiring assembly system, and belongs to the technical field of automobile part manufacturing equipment, which comprises a supporting base assembly, a plurality of wiring units, a sliding installation on a guide sliding rail, the wiring unit comprising a fixed frame and a wiring board rotatably connected to the fixed frame, the wiring board having a first machining surface and a second machining surface arranged in a back-to-back mode, a circulating driving assembly comprising a transmission wheel set installed on a pair of installation boxes, a flexible transmission member wound on the transmission wheel set and a driving source for driving the transmission wheel set to rotate, the flexible transmission member extending along a circulating path, and the flexible transmission member being connected to the fixed frame of each wiring unit through a plurality of connecting frames. The circulating assembly line of the reversible double-sided wiring board improves the efficiency and space utilization, and the automatic locking device of the station guarantees the assembly precision and operation reliability.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts manufacturing equipment, and in particular to an automotive wiring harness assembly system. Background Technology

[0002] Currently, automotive wiring harness assembly is a crucial step in automobile production. Wiring harnesses have complex structures, typically containing wires and connectors of various specifications, and their assembly quality directly impacts the vehicle's electrical performance and safety. Traditional wiring harness assembly often employs a fixed workstation method, where operators perform a series of operations such as wiring, binding, and terminal connection on a wiring harness fixture. After one wiring harness is assembled, the operator removes it and replaces it with a new fixture or wiring harness assembly to proceed with the assembly of the next harness.

[0003] In related technologies, fixed-station assembly methods typically require independent workstations and operators for each process, resulting in long production lines, large space requirements, and waiting times for operators after completing their work at their respective workstations, thus limiting production efficiency. To improve efficiency, assembly line systems have emerged, but these lines are mostly unidirectional and single-station transfer systems, with their tooling plates or carriers usually having fixed structures. When different sides of the wiring harness need to be operated, operators often need to move to the other side of the assembly line.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: existing wire harness assembly methods, especially those using fixed workstations or simple assembly lines, suffer from low production efficiency and low space utilization. Summary of the Invention

[0005] To address the issues of low efficiency and inconvenience in traditional wiring harness assembly methods, this application provides an automotive wiring harness assembly system.

[0006] The automotive wiring harness assembly system provided in this application adopts the following technical solution: An automotive wiring harness assembly system, comprising: The support base assembly includes two symmetrically arranged mounting boxes and at least two guide rails connected between the two mounting boxes, wherein the top surface of the guide rails and the top surface of the mounting boxes together form a circulation path; A plurality of wiring units are slidably mounted on the guide rail. Each wiring unit includes a fixed frame and a wiring plate rotatably connected to the fixed frame. The wiring plate has a first processing surface and a second processing surface facing away from each other. Both the first processing surface and the second processing surface are provided with cable positioning components for fixing cables. The cyclic drive assembly includes a drive wheel set mounted on a pair of mounting housings, a flexible drive member wound around the drive wheel set, and a drive source for driving the drive wheel set to rotate. The flexible drive member extends along the cyclic path and is connected to the fixed frame of each of the wiring units by a plurality of connecting brackets.

[0007] By adopting the above technical solution, several wiring units can move along a circular path formed by guide rails and the top surface of the mounting box under the drive of the circulating drive component, realizing the automatic flow of the wire harness assembly station and forming a continuous production line, which greatly improves production efficiency. Each wiring unit is equipped with a rotatable wiring board, both of which can be used as processing surfaces. After the wire harness assembly on one processing surface is completed, the wiring board can be flipped so that the other processing surface faces the operator to continue the work, realizing double-sided alternating processing. This saves station space and eliminates the trouble of operators moving or using additional flipping equipment, making the assembly process smoother and more compact.

[0008] Preferably, the fixed frame includes a base frame located above the guide slide rail, several movable wheels fixedly connected to the base frame near the guide slide rail, a pair of rotating frames fixedly connected to the base frame away from the guide slide rail, a rotating shaft rotatably connected to the upper part of the two rotating frames on their adjacent sides, the wiring board fixedly connected to the adjacent ends of the two rotating shafts, and a raw material storage frame fixedly connected to the lower part of the two rotating frames on their adjacent sides.

[0009] By adopting the above technical solution, the movable wheels allow the wiring unit to slide smoothly on the guide rail. The rotating frame and shaft ensure stable and reliable flipping of the wiring board. The material storage box facilitates the storage of materials required for the current wiring harness assembly, making it convenient for operators to access and improving operational convenience.

[0010] Preferably, one of the rotating frames is provided with a self-locking assembly for limiting the rotation of the wiring board. The self-locking assembly includes a fixed sleeve fixedly connected to the rotating frame, a locking shaft inserted into the fixed sleeve, a guide hole opened on the outer wall of the fixed sleeve, a handle slidably connected in the guide hole, and an elastic element located in the fixed sleeve. The two ends of the elastic element are respectively fixedly connected to the side wall of the fixed sleeve and the locking shaft. The wiring board has two limiting grooves on the side near the locking shaft, and the locking shaft is inserted into the corresponding limiting groove.

[0011] By adopting the above technical solution, the self-locking component can automatically lock the flipped wiring board in a working position with the first or second processing surface facing upwards, preventing accidental rotation of the wiring board during processing and ensuring operational stability and safety. During operation, simply pull the handle to unlock and flip; releasing it automatically resets the lock, making operation simple and quick.

[0012] Preferably, the cable positioning assembly includes several limiting forks fixedly connected to the first or second processing surface of the wiring board, and several cable fixing clips fixedly connected to the limiting forks.

[0013] By adopting the above technical solution, the limiting forks can be arranged according to the preset wire harness route for cable organization and guidance. The cable fixing clips are used to reliably fix the cables to the limiting forks to prevent them from loosening, thereby providing stable and accurate cable positioning during wire harness assembly and ensuring wiring quality.

[0014] Preferably, the transmission wheel assembly includes a drive sprocket and a driven sprocket, and a connecting shaft is fixedly connected to both the drive sprocket and the driven sprocket. The connecting shafts on the drive sprocket and the driven sprocket are respectively rotatably connected to the top surface of the corresponding mounting housing. The flexible transmission component is a connecting chain, which is connected to the outer wall of the drive sprocket and the driven sprocket.

[0015] By adopting the above technical solutions, the transmission method of sprockets and chains has a simple structure, reliable transmission, and strong load-bearing capacity. It can stably drive all wiring units to move synchronously and easily achieve precise intermittent or continuous motion control.

[0016] Preferably, the drive source is fixedly connected to the bottom wall of one of the mounting housings, and a transmission shaft is fixedly connected to the output shaft of the drive source. The end of the transmission shaft away from the drive source passes through the mounting housing and is fixedly connected to the connecting shaft.

[0017] By adopting the above technical solution, the drive source (such as a servo motor) directly drives the transmission wheel assembly through the transmission shaft. The power transmission path is direct, the structure is compact, and it is easy to install and maintain. Controlling the drive source allows for precise control of the entire system's operating rhythm.

[0018] Preferably, guide platforms are fixedly connected to the adjacent surfaces of the two mounting boxes, and a number of guide wheels are fixedly connected to the side of the base frame near the guide platforms, with the guide wheels slidably connected to the guide platforms.

[0019] By adopting the above technical solution, the cooperation between the guide table and the guide wheel provides lateral support and guidance when the wiring unit is pulled by the chain, effectively preventing the wiring unit from swaying or tilting laterally during the movement, ensuring the stability of the wiring board above it, and thus ensuring the accuracy of the wire harness assembly operation.

[0020] Preferably, the guide rail is provided with a connecting groove, and a limiting device for limiting and fixing the frame is connected to the bottom surface of the guide rail; The limiting device includes a connecting box fixedly connected to the bottom surface of the guide slide rail, several clamping units connected to the connecting box, and an operating unit that drives the several clamping units to run. A fixed shaft is fixedly connected to the side of the base frame near the connecting box, and a fixed ball is fixedly connected to the other end of the fixed shaft. The clamping unit includes a mounting box fixedly connected to the outer wall of the connecting box, a pair of drive rods connected to the mounting box, a clamping seat connected to the drive rods, and a drive unit that drives the pair of drive rods to rotate. The operating unit includes several transmission racks slidably connected to the connecting box, a connecting assembly located inside the connecting box and connected to the several transmission racks, and a linear driver that drives the connecting assembly and the transmission racks to move.

[0021] By adopting the above technical solution, when the wiring unit moves to the processing station, the limiting device can drive the clamping unit to operate through the operating unit, clamping and locking the fixed ball at the bottom of the wiring unit, thus achieving precise locking and positioning of the wiring unit at the processing station. This effectively eliminates minor vibrations caused by drive chain backlash or processing forces, improves the accuracy and stability of wire harness assembly (such as terminal insertion), and also protects the cyclic drive components, extending their service life.

[0022] Preferably, the mounting box has a pair of rotating holes, and the two drive rods are respectively located in the corresponding rotating holes. The drive unit includes a first drive shaft rotatably connected to the bottom wall of the mounting box, and a pair of second drive shafts rotatably connected to the inner wall of the mounting box. A first bevel gear is fixedly connected to the end of the first drive shaft away from its connection with the inner wall of the mounting box, and a second bevel gear is fixedly connected to the end of the second drive shaft away from its connection with the inner wall of the mounting box. The first bevel gear and the two second bevel gears mesh. The drive rod is fixedly connected to the outer wall of the second drive shaft on the same side. A third drive shaft is rotatably connected to the outer wall of the mounting box. The third drive shaft passes through the outer wall of the mounting box and is fixedly connected to the second drive shaft. A transmission gear is fixedly connected to the outer wall of the third drive shaft on the outer side of the mounting box. The transmission gear meshes with the transmission rack.

[0023] By adopting the above technical solution, the drive unit achieves power reversal and synchronous transmission through a bevel gear set, enabling one input (the linear motion of the transmission rack) to drive two drive rods to rotate synchronously and in opposite directions. This reliably drives the two clamping seats to move towards or away from each other, achieving clamping and releasing of the fixed ball. The meshing of the transmission gear and the transmission rack smoothly transmits the power of the operating unit to the clamping unit.

[0024] Preferably, the connecting box has a plurality of sliding holes on the side near the transmission rack, the connecting assembly includes a first connecting plate slidably connected in the sliding holes, one end of the first connecting plate is fixedly connected to the transmission rack, and a second connecting plate is fixedly connected to the ends of the plurality of first connecting plates away from the transmission rack, the cylinder of the linear actuator is fixedly connected to the inner wall of the connecting box, and the output shaft of the linear actuator is fixedly connected to the second connecting plate.

[0025] By adopting the above technical solution, the connecting component structure is simple and reliable. The linear actuator drives a second connecting plate, which in turn drives all the first connecting plates and their connected transmission racks to move synchronously, ensuring that all clamping units can operate synchronously. The sliding hole provides a stable sliding guide for the first connecting plate.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By assembling multiple wiring units with double-sided wiring boards into a circulating production line, operators can work continuously at fixed workstations. After one unit is assembled and leaves, a new unit is immediately in place, reducing waiting time and significantly improving the production efficiency of automotive wiring harnesses. 2. The flip-out double-sided wiring board design enables a single wiring unit to have two independent working areas: a first processing surface and a second processing surface. This doubles the number of working surfaces within a limited space, effectively improving the space utilization rate and unit area productivity of the assembly station. 3. By setting a limiting device consisting of a clamping unit and an operating unit at the bottom of the guide rail, the wiring unit can be automatically and accurately locked in its fixed frame after it reaches the processing station. This reduces the small displacement caused by external operating forces, greatly improves the assembly accuracy, reduces the stress burden on the transmission chain, and enhances the reliability and durability of the system in long-term operation. Attached Figure Description

[0027] Figure 1 This is a perspective view of an automotive wiring harness assembly system as shown in Embodiment 1 of this application.

[0028] Figure 2 This is a perspective view of the wiring unit in Embodiment 1 of this application.

[0029] Figure 3 This is a structural diagram illustrating the self-locking component in Embodiment 1 of this application.

[0030] Figure 4 This is a structural diagram illustrating the cable positioning component in Embodiment 1 of this application.

[0031] Figure 5 This is a structural diagram illustrating the loop drive component in Embodiment 1 of this application.

[0032] Figure 6 This is in Embodiment 1 of this application regarding Figure 5 A magnified view at point A.

[0033] Figure 7 This is a perspective view of Embodiment 2 of this application, illustrating the automotive wiring harness assembly system after the addition of a limiting device.

[0034] Figure 8 This is a structural diagram illustrating the limiting device in Embodiment 2 of this application.

[0035] Figure 9 This is in Embodiment 2 of this application regarding Figure 8 A magnified view at point B.

[0036] Figure 10 This is a structural diagram illustrating the clamping unit in Embodiment 2 of this application.

[0037] Figure 11 This is a perspective view of the base frame after the installation of the partial limiting device in Embodiment 2 of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Support base assembly; 11. Mounting housing; 12. Guide rail; 121. Connecting groove; 2. Wiring unit; 21. Fixing frame; 211. Base frame; 2111. Fixing shaft; 2112. Fixing ball; 212. Moving wheel; 213. Rotating frame; 214. Rotating shaft; 215. Raw material storage box; 216. Self-locking assembly; 2161. Fixing sleeve; 2162. Locking shaft; 2163. Guide hole; 2164. Handle; 2165. Elastic element; 2166. Limiting groove; 22. Wiring board; 221. First machining surface; 222. Second machining surface; 23. Cable positioning assembly; 2311. Connecting section; 2312. Fixing fork section; 231. Limiting fork; 232. Cable fixing clamp; 3. Circulating drive assembly; 31. Transmission wheel set; 311. Drive sprocket 312. Driven sprocket; 313. Connecting shaft; 32. Flexible transmission component; 33. Drive source; 34. Connecting frame; 35. Transmission shaft; 4. Guide table; 5. Guide wheel; 6. Limiting device; 61. Connecting box; 611. Sliding hole; 62. Clamping unit; 621. Mounting box; 6211. Rotating hole; 622. Drive rod; 623. Clamping seat; 6231. Clamping groove; 624. Drive unit; 6241. First transmission shaft; 6242. Second transmission shaft; 6243. First bevel gear; 6244. Second bevel gear; 6245. Third transmission shaft; 6246. Transmission gear; 63. Operating unit; 631. Transmission rack; 632. Connecting assembly; 6321. First connecting plate; 6322. Second connecting plate; 633. Linear actuator; 634. Fixing frame; 7. Controller. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail. Example

[0040] This application discloses an automotive wiring harness assembly system, referring to... Figure 1 It includes a support base assembly 1, several wiring units 2, and a cycle drive assembly 3 for driving the wiring units 2 to move.

[0041] Specifically, the support base assembly 1 includes at least two mounting housings 11 and a plurality of guide rails 12. In this embodiment, the two mounting housings 11 are symmetrically arranged on both sides and spaced apart. There are two guide rails 12, each disposed between the two mounting housings 11, with both ends of each guide rail 12 fixedly connected to the mounting housing 11 on the same side. It should be noted that the two guide rails 12 are symmetrically arranged front and back, and the top surface of the mounting housing 11 is flush with the top surface of the guide rail 12. Thus, the top surfaces of the two mounting housings 11 and the two guide rails 12 together form a closed-loop circulation path.

[0042] Reference Figure 2 Several wiring units 2 are arranged in a ring on a loop path. Specifically, each wiring unit 2 includes a fixed frame 21, a wiring board 22, and a cable positioning assembly 23. The fixed frame 21 further includes a base frame 211, several moving wheels 212, a rotating frame 213, a rotating shaft 214, a raw material storage box 215, and a self-locking assembly 216. In this embodiment, there are four moving wheels 212 arranged diagonally, all fixedly connected to the bottom surface of the base frame 211, and the moving wheels 212 are slidably connected to the top surface of the guide rail 12. In this embodiment, a pair of rotating frames 213 are provided, both fixedly connected to the top surface of the base frame 211 and arranged symmetrically on both sides. There are two rotating shafts 214, which are located between the two rotating frames 213. The rotating shafts 214 are rotatably connected to the top of the inner side of the rotating frame 213 on the same side. The wiring board 22 is fixedly connected to the near ends of the two rotating shafts 214. In this embodiment, the front and back of the wiring board 22 are respectively provided with a first processing surface 221 and a second processing surface 222, and cable positioning components 23 are provided on both the first processing surface 221 and the second processing surface 222. The raw material storage frame 215 is fixedly connected to the lower part of the near surfaces of the two rotating frames 213.

[0043] Reference Figure 2 and Figure 3The self-locking assembly 216 includes a fixed sleeve 2161, a locking shaft 2162, a handle 2164, and an elastic element 2165. The fixed sleeve 2161 is fixedly connected to the outer wall of one of the rotating frames 213. In this embodiment, the fixed sleeve 2161 has a structure with one end closed and the other end open, with the open end pointing towards one side of the wiring board 22. The locking shaft 2162 is slidably connected to the inner wall of the fixed sleeve 2161. The elastic element 2165 (preferably a compression spring) is disposed inside the fixed sleeve 2161. One end of the elastic element 2165 is fixedly connected to the side wall of the fixed sleeve 2161, and the other end is fixedly connected to the locking shaft 2162. An elongated guide hole 2163 is provided on the outer wall of the fixed sleeve 2161, away from the side connected to the rotating frame 213. The guide hole 2163 is arranged along the axial direction of the fixed sleeve 2161. A handle 2164 is slidably connected in the elongated guide hole 2163. One end of the handle 2164 extends into the fixed sleeve 2161 and is fixedly connected to the outer wall of the locking shaft 2162, while the other end is located outside the fixed sleeve 2161, allowing the user to control the movement of the locking shaft 2162 through the handle 2164. Limiting grooves 2166 matching the outer end of the locking shaft 2162 are provided on the upper and lower parts of the wiring board 22 near the fixed sleeve 2161.

[0044] In use, when the first machined surface 221 or the second machined surface 222 of the wiring board 22 is rotated to face the operator, the locking shaft 2162 can automatically insert into the corresponding limiting groove 2166 under the elastic force of the elastic element 2165, thereby locking. When it is necessary to flip the wiring board 22, the operator pulls the handle 2164 away from the side of the wiring board 22, thereby disengaging the locking shaft 2162 from the limiting groove 2166.

[0045] Reference Figure 2 and Figure 4 The cable positioning assembly 23 is used to fix and organize the cable harness. The cable positioning assembly 23 includes several limiting forks 231 and cable fixing clips 232. The limiting forks 231 are arranged according to a preset direction. Each limiting fork 231 includes a connecting section 2311 and a fixing fork section 2312. The connecting section 2311 is fixedly connected to the first processing surface 221 or the second processing surface 222. The fixing fork section 2312 is U-shaped and is fixedly connected to the connecting section 2311. The support leg portion of the fixing fork section 2312 faces away from the connecting section 2311 and is located at the end away from the connection between the connecting section 2311 and the wiring board 22. The cable fixing clip 232 (preferably a plastic clip) is fixedly connected to one support leg of the fixing fork section 2312.

[0046] Reference Figure 5 and Figure 6The cyclic drive assembly 3 provides power to all wiring units 2, enabling them to move intermittently along a cyclic path. The cyclic drive assembly 3 includes a transmission wheel set 31, a flexible transmission element 32, a drive source 33, and several connecting frames 34. The transmission wheel set 31 further includes a drive sprocket 311, a driven sprocket 312, and two connecting shafts 313. The two connecting shafts 313 are fixedly connected to the drive sprocket 311 and the driven sprocket 312, respectively. At the same time, the two connecting shafts 313 are rotatably connected to the center of the top surface of the corresponding mounting housing 11. The flexible transmission element 32 (preferably a chain) is sleeved on the outer wall of the drive sprocket 311 and the driven sprocket 312. In this embodiment, the number of connecting frames 34 is the same as the number of wiring units 2. The connecting frames 34 are fixedly connected to the chain links of the flexible transmission component 32. The side of the connecting frame 34 away from the flexible transmission component 32 is fixedly connected to the base frame 211. The drive source 33 (preferably a servo motor) is fixedly connected to the bottom wall of one of the mounting boxes 11. In this embodiment, the mounting box 11 is preferably located near the drive sprocket 311. The output shaft of the drive source 33 points to the drive sprocket 311, and a transmission shaft 35 is fixedly connected to the output shaft of the drive source 33. The other end of the transmission shaft 35 passes through the top wall of the mounting box 11 and is fixedly connected to the connecting shaft 313 located on the drive sprocket 311.

[0047] To further ensure the stability of the wiring unit 2 during movement, a guide platform 4 is fixedly installed on the upper part of the adjacent sides of the two mounting boxes 11. The guide platform 4 is located between two guide rails 12, and its top surface is higher than the top surface of the mounting box 11 and the guide rails 12. Several guide wheels 5 are fixedly installed on the side of the base frame 211 of each wiring unit 2 near the guide platform 4. These guide wheels 5 form a sliding connection with the side of the guide platform 4 (i.e., the side near the guide wheels 5), thereby providing auxiliary support and guidance when the wiring unit 2 is pulled and moved by the flexible transmission component 32, preventing it from lateral swaying or overturning.

[0048] In use, the drive source 33 is started, and the drive source 33 drives the connecting shaft 313 and the drive sprocket 311 to rotate together through the transmission shaft 35. The rotation of the drive sprocket 311 pulls the flexible transmission component 32 sleeved on it to move, which in turn drives the driven sprocket 312 to rotate. Each connecting frame 34 fixed on the chain link moves synchronously with the chain, thereby pulling all wiring units 2 to move at a uniform speed or intermittently along the cyclic path, realizing forced synchronization of the movement of each station.

[0049] Finally, a controller 7 is fixedly connected to the top surface of one of the mounting boxes 11, and the controller 7 is electrically connected to the drive source 33.

[0050] The implementation principle of this embodiment is as follows: First, the operator performs work at a fixed workstation on one side of the system. The cables, connectors, and other materials required for the wiring harness are placed into the raw material storage box 215 of the wiring unit 2 that is moved in front of the operator. On the processing surface (first processing surface 221 or second processing surface 222) of the wiring board 22 that is currently facing the operator, the wiring harness is laid out, arranged, and fixed according to the layout of the cable positioning components 23 (limiting fork 231 and cable fixing clip 232) preset on the surface, thus completing the assembly process of this workstation.

[0051] Subsequently, the drive source 33 is activated. The drive source 33 drives the connecting shaft 313 and the drive sprocket 311 to rotate via the transmission shaft 35, thereby driving the flexible transmission component 32 to move. Since the base frame 211 of all wiring units 2 is fixedly connected to the chain link of the flexible transmission component 32 via the connecting frame 34, the movement of the flexible transmission component 32 will force all wiring units 2 to move synchronously along the closed-loop circulation path formed by the mounting box 11 and the top surface of the guide rail 12 by one station spacing.

[0052] When the wiring unit 2 moves, its bottom moving wheel 212 rolls along the top surface of the guide rail 12. At the same time, the guide wheel 5 on the side of the base frame 211 forms a sliding connection with the side of the guide platform 4 fixed between the two mounting boxes 11, which effectively limits the lateral swaying or tilting that the wiring unit 2 may produce during movement, and ensures the stability of the wiring board 22 above it.

[0053] Immediately afterward, when the wiring unit 2 that has completed the current process is moved away from the operating station, a new wiring unit 2, already tasked with assembling another wire harness, is simultaneously moved to the operator's position. If the newly arrived unit requires a different processing surface, the operator can overcome the elastic force of the elastic element 2165 and pull outward on the handle 2164 of the self-locking assembly 216, causing the locking shaft 2162 to disengage from the current limiting slot 2166. Then, the wiring board 22 can be rotated 180 degrees using the rotating frame 213 and the rotating shaft 214. When the target processing surface rotates to face the operator, under the automatic reset action of the elastic element 2165, the locking shaft 2162 will quickly spring into the corresponding limiting slot 2166, automatically locking the wiring board 22 to its new working position, allowing for immediate commencement of the next round of work.

[0054] Finally, the controller 7 can control the drive source 33 to operate intermittently according to a preset rhythm. The above process is repeated cyclically, realizing the continuous cyclical movement of each wiring unit 2 on the circular track. Example

[0055] Based on the automotive wiring harness assembly system provided in Embodiment 1, those skilled in the art have discovered in actual continuous production that when the wiring unit 2 moves to the processing station and stops, the positioning relying solely on the drive chain may have slight deviations. Furthermore, when the operator applies significant force, such as when plugging in terminals, the wiring unit 2 may experience slight shaking, affecting processing accuracy. Simultaneously, due to the lack of corresponding limiting stations, prolonged shaking caused by the operator during construction can lead to stress concentration on the flexible transmission component 32, affecting its service life. To address these issues, Embodiment 2 is hereby proposed.

[0056] Reference Figure 7 Based on the structure of Embodiment 1, this embodiment adds a limiting device 6 to the guide slide rail 12 for precisely locking the fixed frame 21 at the processing station. Specifically, a through connecting groove 121 is provided in the middle of the guide slide rail 12. In this embodiment, there are a total of two limiting devices 6, which are arranged symmetrically front and back, and each limiting device 6 is located on the bottom surface of the corresponding guide slide rail 12.

[0057] Reference Figure 8 The limiting device 6 includes a connecting box 61, several clamping units 62, and an operating unit 63 that drives the several clamping units 62 to operate synchronously. Several fixing brackets 634 are fixedly connected to the top surface of the connecting box 61. In this embodiment, there are two fixing brackets 634, located on opposite sides of the top surface of the connecting box 61. The side of the fixing bracket 634 away from the connecting box 61 is fixedly connected to the bottom surface of the guide rail 12.

[0058] Reference Figure 8 and Figure 9The connecting box 61 has a plurality of evenly spaced sliding holes 611 on the side near the fixing frame 634. The operating unit 63 includes a plurality of transmission racks 631, a connecting assembly 632 and a linear driver 633. The connecting assembly 632 includes a plurality of first connecting plates 6321 and second connecting plates 6322. The number of first connecting plates 6321 is the same as the number of sliding holes 611. The first connecting plates 6321 are slidably connected in the corresponding sliding holes 611. The bottom ends of the plurality of first connecting plates 6321 are located inside the connecting box 61, and the top ends of the first connecting plates 6321 are located outside the connecting box 61. The second connecting plates 6322 are slidably connected to the bottom wall of the connecting box 61, and the bottom ends of the plurality of first connecting plates 6321 are fixedly connected to the second connecting plate 6322. The cylinder of the linear actuator 633 (preferably an electric actuator) is fixedly connected to the side wall of the connecting box 61. The output shaft of the linear actuator 633 is fixedly connected to the second connecting plate 6322. The linear actuator 633 is electrically connected to the controller 7. Several transmission racks 631 are evenly spaced and slidably connected to the top surface of the connecting box 61. It should be noted that one transmission rack 631 corresponds to one first connecting plate 6321. The top end of the first connecting plate 6321 passes through the sliding hole 611 and is fixedly connected to the transmission rack 631.

[0059] Reference Figure 8 and Figure 10 The clamping unit 62 includes a mounting box 621, a pair of drive rods 622, a pair of clamping seats 623, and a drive unit 624. The mounting box 621 is fixedly connected to the outer wall of the connecting box 61 near the guide rail 12. Rotation holes 6211 are provided on both the side of the top surface of the mounting box 621 near the guide table 4 and the side away from the guide table 4. It should be noted that the rotation holes 6211 extend all the way to the outer wall of the mounting box 621.

[0060] The drive unit 624 includes a first drive shaft 6241, a pair of second drive shafts 6242, a first bevel gear 6243, two second bevel gears 6244, a third drive shaft 6245, and a drive gear 6246. The first drive shaft 6241 is vertically arranged, and its lower end is rotatably connected to the bottom wall of the mounting box 621. The pair of second drive shafts 6242 are horizontally arranged, and their opposite ends are rotatably connected to the inner wall of the mounting box 621, that is, one second drive shaft 6242 is rotatably connected to the inner wall on the side closer to the guide table 4, and the other second drive shaft 6242 is rotatably connected to the inner wall on the side away from the guide table 4, and their axes are aligned. The first bevel gear 6243 is fixedly connected to the top end of the first drive shaft 6241. Two second bevel gears 6244 are respectively fixedly connected to their corresponding second drive shafts 6242, with the second bevel gears 6244 located away from the end of the second drive shaft 6242 that connects to the inner wall of the mounting box 621. Both second bevel gears 6244 mesh with the first bevel gear 6243. Two drive rods 622 pass through corresponding rotating holes 6211, with one end located inside the mounting box 621 and fixedly connected to the corresponding second drive shaft 6242, and the other end located outside the mounting box 621. The end of the drive rod 622 located outside the mounting box 621 is fixedly connected to a clamping seat 623. Each clamping seat 623 has a semi-circular clamping groove 6231 on its top surface. The third drive shaft 6245 is rotatably connected to the outer wall of the mounting box 621 near the connecting box 61. One end of the shaft passes through the mounting box 621, extends into the mounting box 621, and is fixedly connected to the second drive shaft 6242 on the same side. The other end is located outside the mounting box 621 and is fixedly connected to the drive gear 6246. The drive gear 6246 meshes with the corresponding drive rack 631.

[0061] Reference Figure 11 A fixed shaft 2111 is fixedly connected to the center of the bottom surface of the base frame 211, and a fixed ball 2112 is fixedly connected to the bottom of the fixed shaft 2111. It should be noted that the fixed ball 2112 maintains a distance of at least 5 cm from the top surface of the guide rail 12, so as not to affect the normal movement of the fixed frame 21 on the top surface of the guide rail 12 and the top surface of the mounting box 11.

[0062] The implementation principle of this embodiment is as follows: when the wiring unit 2 moves along the guide rail 12 to the preset processing station (e.g., a fixed position in front of the operator) under the traction of the cyclic drive component 3 and stops, the controller 7 immediately sends a start signal to the linear driver 633 of the limit device 6.

[0063] The output shaft of the linear actuator 633 retracts, pulling the second connecting plate 6322, which is fixedly connected to it, to slide along the bottom wall of the connecting box 61. The second connecting plate 6322 drives all the first connecting plates 6321, which are fixedly connected to it, to move synchronously. The movement of the first connecting plate 6321 drives the transmission rack 631 to slide linearly along the guide hole 611 on the top surface of the connecting box 61 through its top end.

[0064] The linear motion of the transmission rack 631 drives the transmission gear 6246, which meshes with it, to rotate. The rotation of the transmission gear 6246 drives the third transmission shaft 6245 to rotate, which in turn drives the second transmission shaft 6242, which is fixedly connected to the other end of the third transmission shaft 6245, to rotate synchronously within the mounting box 621. Since both second transmission shafts 6242 are fixedly connected with second bevel gears 6244, and both second bevel gears 6244 mesh with the first bevel gear 6243 fixed to the top of the first transmission shaft 6241, the two second transmission shafts 6242 achieve synchronous and opposite rotational motion.

[0065] The rotation of the second drive shaft 6242 drives the drive rod 622, which is fixedly connected to it, to rotate. The rotation of the drive rod 622 is transmitted to the clamping seat 623 located outside the mounting box 621, causing a pair of clamping seats 623 to rotate in opposite directions around the axis of the second drive shaft 6242. As the clamping seats 623 rotate in opposite directions, the semi-circular clamping grooves 6231 opened on their inner sides gradually approach each other and eventually close to form a complete circular clamping cavity.

[0066] At this time, the fixed shaft 2111 and the fixed ball 2112, which are fixedly connected to the base frame 211 of the wiring unit 2, are exactly above the connecting groove 121 of the guide rail 12. When the clamping seat 623 passes through the connecting groove 121 and closes, its clamping groove 6231 tightly holds the fixed ball 2112 from both sides. Since the fixed ball 2112 is rigidly connected to the base frame 211 through the fixed shaft 2111, by holding the fixed ball 2112, the wiring unit 2 is completely locked and precisely positioned in the horizontal direction (preventing lateral and longitudinal movement) and the vertical direction (preventing tilting), reducing the slight displacement or shaking that the base frame 211 and the corresponding wiring unit 2 may experience due to external forces at the processing station.

[0067] After the wiring harness assembly operation at this workstation is completed, the controller 7 controls the output shaft of the linear actuator 633 to extend. The linear actuator 633 pulls all the first connecting plates 6321 and the transmission rack 631 to move in the opposite direction via the second connecting plate 6322. The transmission rack 631 drives the transmission gear 6246 to rotate in the opposite direction, which in turn drives the pair of drive rods 622 and clamping seats 623 to rotate in the opposite direction through the reverse transmission of the third transmission shaft 6245, the second transmission shaft 6242 and the bevel gear set, thereby causing the two clamping seats 623 to separate from each other, thus releasing the clamping of the fixed ball 2112. After the wiring unit 2 is unlocked, it can move smoothly to the next workstation under the drive of the cyclic drive assembly 3, and repeat the above positioning and release process.

[0068] Finally, it should be noted that during the clamping operation, i.e., when the two clamping seats 623 hold the fixed ball 2112, the clamping seats 623 pass through the connecting groove 121 and are located above the guide rail 12. When the clamping seats 623 release the fixed ball 2112, both clamping seats 623 and the corresponding drive rods 622 are located below the guide rail 12, and will not affect the normal movement of the fixed frame 21 on the top surface of the guide rail 12 and the top surface of the mounting box 11.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automotive wiring harness assembly system, characterized in that, include: The support base assembly (1) includes two symmetrically arranged mounting boxes (11) and at least two guide rails (12) connected between the two mounting boxes (11), the top surface of the guide rails (12) and the top surface of the mounting boxes (11) together form a circulation path; Several wiring units (2) are slidably mounted on the guide rail (12). Each wiring unit (2) includes a fixed frame (21) and a wiring plate (22) rotatably connected to the fixed frame (21). The wiring plate (22) has a first processing surface (221) and a second processing surface (222) facing away from each other. Both the first processing surface (221) and the second processing surface (222) are provided with cable positioning components (23) for fixing cables. The cyclic drive assembly (3) includes a drive wheel set (31) mounted on a pair of mounting housings (11), a flexible drive member (32) wound around the drive wheel set (31), and a drive source (33) for driving the drive wheel set (31) to rotate. The flexible drive member (32) extends along the cyclic path and is connected to the fixed frame (21) of each wiring unit (2) by a plurality of connecting frames (34).

2. The automotive wiring harness assembly system according to claim 1, characterized in that: The fixed frame (21) includes a base frame (211) located above the guide slide rail (12), a number of movable wheels (212) fixedly connected to the side of the base frame (211) near the guide slide rail (12), a pair of rotating frames (213) fixedly connected to the side of the base frame (211) away from the guide slide rail (12), and a rotating shaft (214) rotatably connected to the upper part of the two rotating frames (213) on the adjacent side. The wiring board (22) is fixedly connected to the adjacent ends of the two rotating shafts (214), and a raw material storage frame (215) is fixedly connected to the lower part of the two rotating frames (213) on the adjacent side.

3. The automotive wiring harness assembly system according to claim 2, characterized in that: One of the rotating frames (213) is provided with a self-locking assembly (216) that limits the rotation of the wiring board (22). The self-locking assembly (216) includes a fixed sleeve (2161) fixedly connected to the rotating frame (213), a locking shaft (2162) inserted into the fixed sleeve (2161), a guide hole (2163) opened on the outer wall of the fixed sleeve (2161), a handle (2164) slidably connected in the guide hole (2163), and an elastic element (2165) located in the fixed sleeve (2161). The two ends of the elastic element (2165) are respectively fixedly connected to the side wall of the fixed sleeve (2161) and the locking shaft (2162). The wiring board (22) has two limiting grooves (2166) on the side near the locking shaft (2162), and the locking shaft (2162) is inserted into the corresponding limiting groove (2166).

4. The automotive wiring harness assembly system according to claim 2, characterized in that: The cable positioning assembly (23) includes several limiting forks (231) fixedly connected to the first processing surface (221) or the second processing surface (222) of the wiring board (22), and several cable fixing clips (232) fixedly connected to the limiting forks (231).

5. The automotive wiring harness assembly system according to claim 1, characterized in that: The transmission wheel assembly (31) includes a drive sprocket (311) and a driven sprocket (312). A connecting shaft (313) is fixedly connected to both the drive sprocket (311) and the driven sprocket (312). The connecting shaft (313) on the drive sprocket (311) and the connecting shaft (313) on the driven sprocket (312) are rotatably connected to the top surface of the corresponding mounting box (11). The flexible transmission component (32) is a connecting chain. The flexible transmission component (32) is connected to the outer wall of the drive sprocket (311) and the driven sprocket (312).

6. The automotive wiring harness assembly system according to claim 5, characterized in that: The drive source (33) is fixedly connected to the bottom wall of one of the mounting boxes (11). A transmission shaft (35) is fixedly connected to the output shaft of the drive source (33). The end of the transmission shaft (35) away from the drive source (33) passes through the mounting box (11) and is fixedly connected to the connecting shaft (313).

7. The automotive wiring harness assembly system according to claim 2, characterized in that: Guide platforms (4) are fixedly connected to the adjacent surfaces of the two mounting boxes (11), and a number of guide wheels (5) are fixedly connected to the side of the base frame (211) near the guide platform (4). The guide wheels (5) are slidably connected to the guide platform (4).

8. The automotive wiring harness assembly system according to claim 2, characterized in that: The guide slide rail (12) is provided with a connecting groove (121), and a limiting device (6) for limiting and fixing the frame (21) is connected to the bottom surface of the guide slide rail (12). The limiting device (6) includes a connecting box (61) fixedly connected to the bottom surface of the guide slide rail (12), a plurality of clamping units (62) connected to the connecting box (61), and an operating unit (63) that drives the plurality of clamping units (62) to run. A fixed shaft (2111) is fixedly connected to the side of the base frame (211) near the connecting box (61), and a fixed ball (2112) is fixedly connected to the other end of the fixed shaft (2111). The clamping unit (62) includes a mounting box (621) fixedly connected to the outer wall of the connecting box (61), a pair of drive rods (622) connected to the mounting box (621), a clamping seat (623) connected to the drive rods (622), and a drive unit (624) that drives the pair of drive rods (622) to rotate. The operating unit (63) includes a plurality of transmission racks (631) slidably connected to the connecting box (61), a connecting assembly (632) located inside the connecting box (61) and connected to the plurality of transmission racks (631), and a linear driver (633) that drives the connecting assembly (632) and the transmission racks (631) to move.

9. The automotive wiring harness assembly system according to claim 8, characterized in that: The mounting box (621) has a pair of rotating holes (6211), and the two drive rods (622) are respectively located in the corresponding rotating holes (6211). The drive unit (624) includes a first drive shaft (6241) rotatably connected to the bottom wall of the mounting box (621), and a pair of second drive shafts (6242) rotatably connected to the inner wall of the mounting box (621). A first bevel gear (6243) is fixedly connected to the end of the first drive shaft (6241) away from its connection with the inner wall of the mounting box (621), and a second bevel gear is fixedly connected to the end of the second drive shaft (6242) away from its connection with the inner wall of the mounting box (621). (6244), the first bevel gear (6243) and two second bevel gears (6244) mesh, the drive rod (622) is fixedly connected to the outer wall of the second drive shaft (6242) on the same side, the third drive shaft (6245) is rotatably connected to the outer wall of the mounting box (621), the third drive shaft (6245) passes through the outer wall of the mounting box (621) and is fixedly connected to the second drive shaft (6242), the third drive shaft (6245) is located on the outer wall of the outer side of the mounting box (621) and a transmission gear (6246) is fixedly connected, the transmission gear (6246) meshes with the transmission rack (631).

10. The automotive wiring harness assembly system according to claim 9, characterized in that: The connecting box (61) has several sliding holes (611) on the side near the transmission rack (631). The connecting assembly (632) includes a first connecting plate (6321) slidably connected in the sliding holes (611). One end of the first connecting plate (6321) is fixedly connected to the transmission rack (631). The ends of several first connecting plates (6321) away from the transmission rack (631) are jointly fixedly connected to a second connecting plate (6322). The cylinder of the linear actuator (633) is fixedly connected to the inner wall of the connecting box (61). The output shaft of the linear actuator (633) is fixedly connected to the second connecting plate (6322).

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