Conveying device for carriage manufacturing

Abstract

The present invention relates to the technical field of conveying devices, and discloses a conveying device for car body manufacturing, comprising a conveying roller and a robotic arm; a gripping unit, wherein the gripping unit is arranged at the movable end of the robotic arm, and the gripping unit comprises a connecting base plate arranged on the movable end of the robotic arm, and a connecting frame is symmetrically mounted on the connecting base plate, a bracket is mounted on the connecting frame, and a first cylinder is symmetrically mounted on the bracket, and a first clamp is mounted on the telescopic end of the first cylinder; a self-offset unit is arranged on the connecting base plate, and is used to accurately adjust the position of the car body plate to achieve welding of the weld on the other side of the car body plate without flipping the car body plate. By arranging the self-offset unit on the connecting base plate, the present invention eliminates the need for traditional flipping operations, and can achieve welding on the other side by precisely offsetting the position of the car body plate with the self-offset unit, which greatly shortens the operation time, greatly improves the overall efficiency of the welding work, and optimizes the production process.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying devices, and more particularly, to a conveying device used for carriage manufacturing. Background Art

[0002] In the modern train car manufacturing industry, efficient and precise production processes are crucial for ensuring product quality and improving production efficiency. The welding of train car panels, a critical process, places stringent demands on conveyor systems. Traditional train car manufacturing conveyor systems have numerous limitations during the panel welding process.

[0003] Taking the welding process for the upper and lower surfaces of a car body panel as an example, the conventional operation mode is to complete the welding on one side first, then use a gripping unit to clamp the panel, and then use a flipping device to flip the panel over to complete the welding on the other side. However, after the single-sided welding is completed, the clamping and flipping operations must be carried out in sequence. This not only increases the process time, but also introduces more uncertainty due to the increased manual operation steps, seriously hindering the improvement of production efficiency.

[0004] Secondly, frequent clamping and flipping damages the quality of the car body panels. During this process, the panels are prone to surface scratches due to collisions, and uneven force can cause deformation. Surface scratches affect the appearance of the car body, while deformation directly affects welding precision, resulting in a decline in welding quality, ultimately reducing the overall quality of the car body and increasing the defective rate. Summary of the Invention

[0005] The present invention provides a conveying device for car body manufacturing, which solves the technical problem in related technologies that after single-sided welding is completed, the clamping and flipping operations need to be performed in sequence, which not only increases the process time, but also introduces more uncertainties due to the increase in manual operation steps, seriously hindering the improvement of production efficiency.

[0006] The present invention discloses a conveying device for car body manufacturing, comprising a conveying roller and a robotic arm; a grabbing unit, wherein the grabbing unit is arranged at the movable end of the robotic arm, and the grabbing unit comprises a connecting base plate arranged on the movable end of the robotic arm, and a connecting frame is symmetrically mounted on the connecting base plate, a bracket is mounted on the connecting frame, and a first cylinder is symmetrically mounted on the bracket, and a first clamp is mounted on the telescopic end of the first cylinder; a self-offsetting unit is arranged on the connecting base plate, and is used for accurately adjusting the position of the car body plate without flipping the car body plate to achieve welding of the weld on the other side of the car body plate.

[0007] As a further optimization solution of the present invention, the self-offsetting unit includes a fixing frame symmetrically mounted on the connecting base plate, and a threaded rod is connected to a bearing on the fixing frame, a threaded sleeve is threadedly connected to the threaded rod, and the threaded rods are connected by a first pulley transmission mechanism. A servo motor is mounted on one group of the fixing frames, and the output shaft of the servo motor is fixedly connected to one group of the threaded rods.

[0008] As a further optimization solution of the present invention, a support frame is installed on the threaded sleeve, and a bearing frame is installed on the side away from the support frame. Connecting columns are symmetrically installed on the bearing frame, and a clamping unit is provided on the connecting column.

[0009] As a further optimization solution of the present invention, the support frame is arranged in an inverted U-shaped structure, and the support frame is slidably connected to the inner wall of the fixing frame.

[0010] As a further optimized solution of the present invention, the clamping unit includes a second cylinder installed on the connecting column, and a movable frame is installed at the telescopic end of the second cylinder, and the movable frame is provided with a second clamping claw.

[0011] As a further optimization solution of the present invention, the frames at both ends of the support frame are arranged to be inclined to avoid interference between the second clamping jaw and the first clamping jaw when the second clamping jaw moves.

[0012] As a further optimization solution of the present invention, the first clamping jaw and the second clamping jaw are located on the same horizontal line, and the second clamping jaw is used to clamp the car body panel and perform lateral movement adjustment.

[0013] As a further optimization solution of the present invention, the second clamping jaw is arranged in a C-shaped structure, and a rubber pad is provided in the second clamping jaw.

[0014] As a further optimization scheme of the present invention, a rack plate is installed on the second clamping jaw, and a gear is meshed and connected to the rack plate. A connecting shaft is connected to the bearing between each two groups of the mobile frames, and the connecting shaft is fixedly connected to the gear. A dual-axis motor is installed on one group of the mobile frames, and the two output shafts of the dual-axis motor are fixedly connected to the connecting shaft. The two groups of connecting shafts are connected by a second pulley transmission mechanism.

[0015] As a further optimization solution of the present invention, a sliding groove is provided on the movable frame, and a slider is slidably connected in the sliding groove, and the slider is fixedly connected to the second clamping claw.

[0016] The beneficial effects of the present invention are as follows: by arranging a self-offset unit on the connecting base plate, the present invention eliminates the need for traditional flipping operations, and can achieve welding on the other side by precisely offsetting the position of the carriage plate by the self-offset unit, thereby greatly shortening the operation time, greatly improving the overall efficiency of the welding work, and optimizing the production process; and, the second clamping jaw of the clamping unit is driven by the meshing transmission of the gear and the rack plate, and driven by the dual-axis motor, the carriage plate can be moved laterally, thereby avoiding interference of the load frame with the welding equipment, allowing the welding equipment to achieve continuous welding of the carriage plate without having to bypass obstacles, reducing unnecessary moving paths of the welding equipment, and further improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the robotic arm and the grasping unit of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the grabbing unit of the present invention Figure 1 ;

[0020] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the grabbing unit of the present invention;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the grabbing unit of the present invention Figure 2 ;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the connection substrate and the self-deflection unit of the present invention;

[0023] Figure 7 This is a schematic diagram of the local three-dimensional structure of the self-deflection unit of the present invention. Figure 1 ;

[0024] Figure 8 This is a schematic diagram of the local three-dimensional structure of the self-deflection unit of the present invention. Figure 2 ;

[0025] Figure 9 It is a schematic diagram of the partial three-dimensional structure of the clamping unit of the present invention.

[0026] In the figure: 100, conveyor roller; 200, robotic arm; 300, grabbing unit; 310, connecting base plate; 320, connecting frame; 330, bracket; 340, first cylinder; 350, first clamping jaw; 360, self-offsetting unit; 361, fixed frame; 362, threaded rod; 363, threaded sleeve; 364, supporting frame; 365, first pulley transmission mechanism; 366, servo motor; 367, carrying frame; 368, connecting column; 369, clamping unit; 3691, second cylinder; 3692, moving frame; 3693, second clamping jaw; 3694, rack plate; 3695, gear; 3696, connecting shaft; 3697, slideway; 3698, slider; 3699, dual-axis motor; 36910, second pulley transmission mechanism. DETAILED DESCRIPTION

[0027] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0028] According to the attached Figure 1 To the attached Figure 4 As shown, a conveying device for car body manufacturing includes a conveying roller 100 and a robotic arm 200; a gripping unit 300. The gripping unit 300 is arranged at the movable end of the robotic arm 200, allowing the gripping action to reach different positions flexibly, meeting the requirements of gripping different components at different positions in car body manufacturing. It provides a stable installation foundation for the entire gripping unit 300 and ensures the stability of the gripping process. The gripping unit 300 includes a connecting base plate 310 arranged at the movable end of the robotic arm 200, and a connecting frame 320 is symmetrically mounted on the connecting base plate 310. The connecting frame 320 is mounted on the bracket 330, and a first cylinder 340 is symmetrically mounted on the bracket 330. The telescopic end of the first cylinder 340 is mounted with a first clamping claw 350.

[0029] Specifically, when the first cylinder 340 is driven to perform telescopic movement, the first cylinder 340 drives the first clamping jaws 350 to move closer to or away from each other, thereby facilitating the clamping and lifting of the car body panel, thereby facilitating the welding of the outer wall weld of the car body panel in cooperation with the welding device.

[0030] It's important to understand that when welding a car panel, the first clamping jaw 350 quickly and accurately grips the panel by driving the first cylinder 340. The robotic arm 200 then smoothly lifts the panel to the appropriate height and angle, perfectly coordinating with the welding device. At this point, the panel is precisely positioned for welding, allowing the welding device to precisely weld the seam on the panel's underside. This collaborative operation not only improves welding efficiency and quality, but also reduces the errors and safety risks associated with manual handling and positioning.

[0031] According to the attached Figure 3 and attached Figure 4 As shown, during the car manufacturing process, according to the welding process requirements for the welds on the upper and lower surfaces of the car plate, after the single-sided welding is completed, the car plate usually needs to be flipped over to realize the welding operation on the other side. The traditional process uses a grabbing unit 300 to clamp the car plate. After the single-sided welding is completed, the clamping and fixation must be released first, and then the car plate must be flipped with the help of a flipping device. This process is relatively cumbersome and seriously affects work efficiency. In this embodiment, a self-offset unit 360 is provided on the connecting substrate 310, and the self-offset unit 360 can flexibly adjust the position of the car plate. During the actual welding operation, there is no need to perform the traditional flipping operation on the car plate. Only by relying on the precise offset of the position of the car plate by the self-offset unit 360, the welding of the weld on the other side of the car plate can be realized, which greatly improves the overall efficiency of the welding work and optimizes the production process.

[0032] Specifically, the 360-degree self-offsetting unit prevents frequent flipping of the car panels, reducing the risk of collision and deformation caused by flipping operations. This ensures that the car panels always maintain a stable position and shape, creating excellent conditions for precise welding, thereby improving weld quality, reducing defective product rates, and enhancing the overall quality of the car. By flexibly adjusting the position of the car panels, the 360-degree self-offsetting unit can accommodate car panels of different sizes and shapes, eliminating the need for a dedicated flipping device for each car panel specification.

[0033] Furthermore, according to the attached Figure 5 To the attached Figure 7As shown, the self-offsetting unit 360 includes a fixed frame 361 symmetrically mounted on the connecting base plate 310, and a threaded rod 362 is connected to the bearing on the fixed frame 361, and a threaded sleeve 363 is threadedly connected to the threaded rod 362. The threaded rod 362 is connected to each other by a first pulley transmission mechanism 365. The connection through the first pulley transmission mechanism 365 ensures that multiple threaded rods 362 can rotate synchronously, so that the movement of the threaded sleeves 363 and the supporting frame 367 on both sides is completely synchronized, avoiding the tilting and twisting of the car body during movement due to asynchrony, and ensuring the stability of the position of the car body. Among them, this synchronization is particularly important when performing position offset on large car body plates, which can prevent the car body plates from being deformed due to uneven force and affecting the subsequent welding quality. A servo motor 366 is installed on one set of fixed frames 361, and the output shaft of the servo motor 366 is fixedly connected to one set of threaded rods 362.

[0034] It should be noted that a support frame 364 is installed on the threaded sleeve 363, and the support frame 364 is arranged in an inverted U-shaped structure, and the support frame 364 is slidably connected to the inner wall of the fixed frame 361, and the support frame 364 is auxiliary supported by the fixed frame 361. A load-bearing frame 367 is installed on the side away from the support frame 364, and connecting columns 368 are symmetrically installed on the load-bearing frame 367. The setting of the load-bearing frame 367 facilitates the support of the car body plate, thereby improving the stability of the equipment.

[0035] During operation, the servo motor 366 is driven to rotate, and the threaded rod 362 is controlled to rotate. Under the action of the threaded connection between the threaded rod 362 and the threaded sleeve 363, the support frame 364 is driven to move; when the support frame 364 moves, the carrier frame 367 is synchronously driven to move, thereby driving the connecting column 368 to move, so that the clamping unit 369 moves synchronously, thereby driving the car body plate to offset, so that the car body plate is separated from the bottom of the connecting base plate 310, and the upper surface is completely exposed to the outside world, which is convenient for the welding device to weld the upper surface of the car body plate.

[0036] According to the attached Figure 6 As shown, a clamping unit 369 is provided on the connecting column 368 for clamping and fixing the car body plate. The setting of the clamping unit 369 facilitates the transfer of the car body plate from the grabbing unit 300 to the clamping unit 369, and the position of the car body plate is adjusted by the self-offset unit 360, thereby facilitating the welding process on the upper surface of the car body plate.

[0037] Specifically, according to the attached Figure 7 To the attached Figure 9As shown, the clamping unit 369 includes a second cylinder 3691 mounted on a connecting column 368. A movable frame 3692 is mounted on the telescopic end of the second cylinder 3691. The movable frame 3692 is provided with a second clamping jaw 3693. The first clamping jaw 350 and the second clamping jaw 3693 are co-horizontally aligned. The second clamping jaw 3693 is used to clamp the car body panel and to adjust its lateral movement. The second clamping jaw 3693 is arranged in a C-shaped structure and has a rubber pad inside.

[0038] Among them, the second cylinder 3691 provides power for the clamping action, and its telescopic end pushes the movable frame 3692, causing the second clamping claw 3693 to clamp or release, which can provide a relatively stable and controllable clamping force, ensuring that when grabbing the car body panel, the clamping claw can firmly fix the panel to avoid slipping during transportation or welding.

[0039] Furthermore, a rack plate 3694 is mounted on the second clamping jaw 3693, which is meshed with a gear 3695. A connecting shaft 3696 is connected by a bearing between each pair of movable frames 3692, and is fixedly connected to the gear 3695. A slide 3697 is formed on the movable frame 3692, and a slider 3698 is slidably connected within the slide 3697. The coordinated design of the slide 3697 and the slider 3698 provides precise guidance for the movement of the second clamping jaw 3693. The slider 3698 slides within the slide 3697, not only limiting the movement trajectory of the clamping jaw and ensuring its linear movement, but also reducing deviation during movement, achieving high-precision clamping and positioning. The slider 3698 is fixedly connected to the second clamp 3693, and a dual-axis motor 3699 is installed on one set of movable frames 3692, and the two output shafts of the dual-axis motor 3699 are fixedly connected to the connecting shaft 3696, and the two sets of connecting shafts 3696 are connected by a second pulley transmission mechanism 36910.

[0040] In this embodiment, through the meshing transmission of the gear 3695 and the rack plate 3694, when the dual-axis motor 3699 drives the connecting shaft 3696 to rotate, the gears 3695 on both sides will rotate synchronously, thereby driving the rack plate 3694 and the second clamping jaw 3693 meshing therewith to move synchronously, so that the car body plate can move laterally, thereby avoiding the support frame 367 from interfering with the welding equipment. The welding equipment needs to bypass the obstacles and perform continuous welding on the car body plate during welding, which helps to improve the efficiency of car body plate welding.

[0041] It should be noted that when the car body panel needs to be clamped, the power is first provided by the second cylinder 3691 installed on the connecting column 368. The telescopic end of the second cylinder 3691 starts to move, pushing the mobile frame 3692 connected thereto to move. In the process of the movement of the mobile frame 3692, the second clamping jaw 3693 provided thereon is driven to move synchronously, thereby realizing the clamping or releasing action of the second clamping jaw 3693. Since the force output by the second cylinder 3691 is relatively stable, it can provide a stable and controllable clamping force for the second clamping jaw 3693, ensuring that when grabbing the car body panel, the second clamping jaw 3693 can firmly fix the plate to prevent the car body panel from slipping during transportation or welding.

[0042] At the same time, the slider 3698 slides in the slide groove 3697. The cooperation between the slide groove 3697 and the slider 3698 provides precise guidance for the movement of the second clamping jaw 3693, limiting the movement trajectory of the second clamping jaw 3693 so that it can only move in a straight line along the slide groove 3697, reducing movement deviation.

[0043] In addition, by rotating the dual-axis motor 3699, the connecting shaft 3696 is controlled to rotate, thereby causing the gear 3695 to rotate. Under the action of the meshing connection between the gear 3695 and the rack plate 3694, the carriage plate is driven to move laterally within the grabbing unit 300, thereby facilitating the welding of the carriage plate with the welding equipment, avoiding unnecessary moving paths for the welding equipment, and improving work efficiency.

[0044] The above describes an embodiment of this specific implementation method, but this embodiment is not limited to the above specific implementation method. The above specific implementation method is merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A conveying device for carriage manufacturing, characterized in that: include: Conveyor roller (100) and robotic arm (200); A gripping unit (300), the gripping unit (300) being arranged at the movable end of the robotic arm (200), the gripping unit (300) comprising a connecting substrate (310) arranged on the movable end of the robotic arm (200), a connecting frame (320) being symmetrically mounted on the connecting substrate (310), a bracket (330) being mounted on the connecting frame (320), a first cylinder (340) being symmetrically mounted on the bracket (330), and a first gripper (350) being mounted on the telescopic end of the first cylinder (340); A self-deflection unit (360) is provided on the connection base plate (310) and is used to accurately adjust the position of the carriage plate to achieve welding of the weld seam on the other side of the carriage plate without flipping the carriage plate; The self-deflection unit (360) includes a fixing frame (361) symmetrically mounted on the connection base plate (310), wherein a threaded rod (362) is connected to a bearing on the fixing frame (361), a threaded sleeve (363) is threadedly connected to the threaded rod (362), and the threaded rods (362) are connected to each other via a first pulley transmission mechanism (365), wherein a servo motor (366) is mounted on one group of the fixing frames (361), and an output shaft of the servo motor (366) is fixedly connected to one group of the threaded rods (362); A support frame (364) is installed on the threaded sleeve (363), and a carrier frame (367) is installed on one side away from the support frame (364). Connecting columns (368) are symmetrically installed on the carrier frame (367), and a clamping unit (369) is provided on the connecting column (368). The clamping unit (369) includes a second cylinder (3691) mounted on the connecting column (368), and a movable frame (3692) is mounted on the telescopic end of the second cylinder (3691), and a second clamping claw (3693) is provided on the movable frame (3692); A rack plate (3694) is mounted on the second clamping jaw (3693), and a gear (3695) is meshedly connected to the rack plate (3694). A connecting shaft (3696) is connected to a bearing between each two groups of the movable frames (3692), and the connecting shaft (3696) is fixedly connected to the gear (3695). A dual-axis motor (3699) is mounted on one group of the movable frames (3692), and two output shafts of the dual-axis motor (3699) are fixedly connected to the connecting shaft (3696). The two groups of connecting shafts (3696) are connected via a second pulley transmission mechanism (36910).

2. A conveying device for carriage manufacturing according to claim 1, characterized in that: The support frame (364) is arranged in an inverted U-shaped structure, and the support frame (364) is slidably connected to the inner wall of the fixing frame (361).

3. A conveying device for carriage manufacturing according to claim 1, characterized in that: The frames at both ends of the carrier (367) are arranged at an angle to avoid interference between the second clamping jaw (3693) and the first clamping jaw (350) when the second clamping jaw (3693) moves.

4. A conveying device for carriage manufacturing according to claim 1, characterized in that: The first clamping jaw (350) and the second clamping jaw (3693) are located on the same horizontal line, and the second clamping jaw (3693) is used to clamp the carriage plate and perform lateral movement adjustment.

5. The conveying device for carriage manufacturing according to claim 1, characterized in that: The second clamping jaw (3693) is arranged in a C-shaped structure, and a rubber pad is provided inside the second clamping jaw (3693).

6. The conveying device for carriage manufacturing according to claim 1, characterized in that: A sliding groove (3697) is provided on the movable frame (3692), and a slider (3698) is slidably connected in the sliding groove (3697), and the slider (3698) is fixedly connected to the second clamping claw (3693).

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