Automobile door cover edge rolling machining device

Abstract

The invention relates to the technical field of rolloff processing, and particularly provides an automobile door cover rolloff processing device which comprises a top plate, a plurality of space displacement mechanisms, a steering mechanism, a rotating mechanism and a rolloff end, a center shaft is arranged on the top plate, the rotating mechanism is installed on the top plate, and the rolloff end is installed on the center shaft. The rotating mechanism drives the multiple space displacement mechanisms to rotate on the horizontal plane with the axis of the center shaft as the rotating center, the steering mechanism is installed at the output ends of the space displacement mechanisms, and the space displacement mechanisms drive the steering mechanism to move along a horizontal straight line and a vertical straight line. A plurality of different types of edge rolling ends are arranged, and the edge rolling ends of different types are mounted on different steering shafts; the steering mechanism, the space displacement mechanism and the rotating mechanism are used for driving the multiple edge rolling ends to roll the automobile door cover at the same time, and therefore the machining efficiency of the automobile door cover is improved.

Description

Technical Field

[0001] This invention relates to the field of hemming technology, and more particularly to a hemming device for automobile door covers. Background Technology

[0002] Automotive door panels (including doors, hoods, trunk lids, etc.) are key body panels in the vehicle assembly, and their manufacturing quality directly affects the vehicle's sealing, appearance, and safety. Hemming is a core process in modern automotive door panel production, which aims to interlock the edges of the inner and outer panels of the door panel through plastic deformation to form a smooth, strong, and sealed edge.

[0003] Currently, automotive door covers are primarily manufactured using robotic hemming. An industrial robot holds hemming rollers, and the robot arm's flexible movement gradually rolls and shapes the edges of the door cover. This technology offers excellent flexibility; by changing the gripper at the robot's end effector and reprogramming, it can quickly adapt to the production of door covers for different car models, making it the mainstream choice for flexible production lines. However, robotic hemming is a typical "serial" processing mode. All hemming paths for a door cover must be completed segment by segment and sequentially by the robot. For door covers with complex contours and long lengths (such as four-door two-cover), the complete hemming path is very long, making it difficult to significantly shorten the processing cycle time for a single product. Therefore, this application proposes an automotive door cover hemming processing device. Summary of the Invention

[0004] The purpose of this invention is to provide an automotive door cover hemming processing device to solve the problem of low efficiency in current automotive hemming processing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A rolling edge processing device for automobile door covers, 1. The rolling edge processing device includes: Includes a top plate, on which a central shaft is provided, and a rotating mechanism is fixedly connected to the top plate. The end of the central shaft is provided with a clamping fixture mounting position for installing clamping tools. Multiple spatial displacement mechanisms, wherein the rotating mechanism drives the multiple spatial displacement mechanisms to rotate on a horizontal plane with the axis of the central shaft as the center of rotation; A steering mechanism is installed at the output end of the spatial displacement mechanism. The spatial displacement mechanism drives the steering mechanism to move along a horizontal straight line and a vertical straight line. The steering mechanism includes a third motor and a steering shaft. The steering shaft is arranged in the vertical direction, and the third motor drives the steering shaft to rotate around a vertical straight line. The hemmed end is provided with various different types, and different types of hemmed ends are installed on different steering shafts.

[0006] Furthermore, the spatial displacement mechanism includes: A horizontal displacement mechanism is provided at both ends of a rotating seat and an end seat. The rotating seat is a cylindrical structure and is sleeved on the central shaft. The end seat is fixedly connected to the rotating mechanism. Multiple horizontal displacement mechanisms are connected to the same rotating seat, and multiple end seats are connected to the same rotating mechanism. A vertical displacement mechanism is fixedly connected to the output end of the horizontal displacement mechanism, and a steering mechanism is fixedly connected to the output end of the vertical displacement mechanism.

[0007] Furthermore, the horizontal displacement mechanism is a lead screw linear displacement mechanism.

[0008] Furthermore, the vertical displacement mechanism is a lead screw linear displacement mechanism.

[0009] Furthermore, the steering mechanism includes: Motor mount; A third motor is fixedly connected to the motor mount; A steering shaft is fixedly connected to the output shaft of the motor mount. A third motor is used to drive the steering shaft to rotate. The steering shaft is vertically arranged. The rolled edge end is fixedly connected to the end of the steering shaft away from the third motor. The steering shaft is rotatably connected to the motor mount.

[0010] Furthermore, the rotating mechanism includes: A rotating ring, wherein the rotating ring is a circular ring structure; A driving component is fixedly connected to the top plate. The driving component is used to drive the rotating ring to rotate and simultaneously limit the rotation of the rotating ring.

[0011] Furthermore, the rotating ring includes: Bottom ring; The top ring, the bottom ring, and the top ring are all annular, and the inner and outer diameters of the bottom ring and the top ring are the same. The bottom ring and the top ring are fixedly connected. The toothed pin has a stepped shaft structure, and multiple toothed pins are provided. The outer diameters of the two ends of the toothed pin are smaller than the outer diameter of the middle section. The two ends of the toothed pin are respectively engaged with the bottom ring and the top ring. The toothed pin is located between the bottom ring and the top ring. Multiple toothed pins are provided and are evenly distributed around the axis of the rotating ring in the circumferential direction.

[0012] Furthermore, the driving element includes: The base and the top cover are provided. The base is an L-shaped block structure and the top cover is a plate structure. The base and the top cover are fixedly connected and form a U-shaped structure. A suspension rod, which is fixedly connected to the top cover and the top plate; A guide wheel is rotatably connected between the base and the top cover, with the edge of the guide wheel located between the base and the top cover; A drive gear and a fourth motor are provided. The fourth motor is fixedly connected to the top cover. The drive gear is located between the base and the top cover. The drive gear is fixedly connected to the output shaft of the fourth motor and meshes with the gear pin.

[0013] Furthermore, the hemming device also includes a robotic arm, the execution end of which is fixedly connected to the top plate.

[0014] The automobile door cover hemming processing device according to any one of claims 1-5 is characterized in that the hemming processing device further includes a lifting device, the lifting device being used to drive the hemming processing device to rise and fall, and the lifting structure being fixed to the top plate.

[0015] In summary, the present invention has the following advantages compared with the prior art: The automobile door cover rolling processing device disclosed in this embodiment of the invention drives multiple rolling ends to simultaneously roll the automobile door cover through the steering mechanism, spatial displacement mechanism and the rotation mechanism, thereby improving the processing efficiency of automobile door covers. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of the automobile door cover hemming processing device disclosed in an embodiment of the present invention.

[0017] Figure 2 This is a second-view structural schematic diagram of the automobile door cover hemming processing device disclosed in an embodiment of the present invention.

[0018] Figure 3 for Figure 2 A magnified view of a section at point I.

[0019] Figure 4 This is a schematic diagram of the spatial displacement mechanism in the automobile door cover hemming processing device disclosed in an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the rotating mechanism in the automobile door cover hemming processing device disclosed in an embodiment of the present invention.

[0021] Figure 6 for Figure 5A magnified view of section II in the middle.

[0022] Figure 7 This is a schematic diagram of the rotating shaft in the automobile door cover hemming processing device disclosed in an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the toothed pin shaft in the automobile door cover hemming processing device disclosed in an embodiment of the present invention.

[0024] Figure label: 100. Top plate; 200. Central shaft; 201. Turning section; 202. Mounting end; 203. Fixed end; 210. Clamping fixture mounting position; 300. Horizontal displacement mechanism; 310. Rotary seat; 320. End seat; 330. First lead screw; 340. Guide rod; 350. First motor; 400. Vertical displacement mechanism; 410. Vertical seat; 420. Guide rail plate; 430. Second lead screw; 440. Second motor; 450. Vertical slide; 50. 0. Steering mechanism; 510. Motor mount; 520. Third motor; 530. Steering shaft; 531. Fixing plate; 600. Rotating mechanism; 610. Rotating ring; 611. Bottom ring; 612. Top ring; 613. Gear pin; 620. Driving component; 621. Base; 622. Top cover; 623. Hanging rod; 624. Guide wheel; 625. Drive gear; 626. Fourth motor; 700. Hemming end; 710. Hemming wheel; 720. Hemming seat. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] Example 1 Figure 1 and Figure 2As shown, an embodiment of the present invention provides an automotive door cover hemming processing device. The hemming processing device includes a top plate 100, multiple spatial displacement mechanisms, a steering mechanism 500, a rotating mechanism 600, and a hemming end 700. A central shaft 200 is provided on the top plate 100. The rotating mechanism 600 is mounted on the top plate 100. The rotating mechanism 600 drives the multiple spatial displacement mechanisms to rotate in a horizontal plane around the axis of the central shaft 200. The steering mechanism 500 is mounted on the output of the spatial displacement mechanisms. At the end, the spatial displacement mechanism drives the steering mechanism 500 to move along a horizontal and vertical straight line. The steering mechanism 500 includes a third motor 520 and a steering shaft 530. The steering shaft 530 is arranged in the vertical direction. The third motor 520 drives the steering shaft 530 to rotate around a vertical straight line. The rolled edge end 700 is provided with various different types. Different types of rolled edge ends 700 are installed on different steering shafts 530. The end of the central shaft 200 is provided with a clamping fixture mounting position 210 for installing clamping fixtures.

[0027] In this embodiment, when using the hemming processing device, the clamping fixture is installed on the clamping jig mounting position 210, the top plate 100 is installed on the robot or lifting structure, and different types of hemming ends 700 are sequentially installed on the steering shaft 530 according to the rotation direction of the rotating mechanism 600. The order is as follows: for the same side of the car door cover, during the rotation of the rotating mechanism 600, the hemming end 700 used first rolls the car door cover, and then the hemming end 700 is used again to roll the same position. The rolling of the car door cover is completed after the rotating mechanism 600 rotates a preset angle. During the rolling of the car door cover, the spatial displacement mechanism controls the steering mechanism 500 to move horizontally based on a set program. The linear and vertical linear movements cause the steering mechanism 500 to move around the edge of the car door cover under the drive of the rotating mechanism 600 and the spatial displacement mechanism. The rolling end 700 can move along the edge of the car door cover. During the movement of the rolling end 700, the steering mechanism 500 controls the steering of the rolling end 700, so that the rolling end 700 rolls the edge of the car door cover. Since various different types of structures are required during the rolling process, such as cylindrical and frustum-shaped roller structures, various different types of the rolling end 700 work simultaneously during the rolling process of the car door cover, thereby improving the rolling efficiency. At the same time, the rolling end 700 can flexibly process various different car door covers, only requiring the replacement of the clamping fixture.

[0028] The automobile door cover rolling processing device disclosed in this embodiment of the invention drives multiple rolling ends 700 to simultaneously roll the automobile door cover through the steering mechanism 500, the spatial displacement mechanism and the rotating mechanism 600, thereby improving the processing efficiency of the automobile door cover.

[0029] Specifically, in this embodiment, the top plate 100 is a disc structure, and the central shaft 200 is fixedly connected to the top plate 100 by bolts, such as... Figure 7 As shown, a fixed end 203 is provided at the end of the central shaft 200, and the bolts for fixing the central shaft 200 pass through the top plate 100.

[0030] It should be noted that the top plate 100 can also be in other forms, such as a frame structure, where the top plate 100 serves a load-bearing function, and its shape is not limited to a disc or a frame structure.

[0031] like Figure 8 As shown, the central shaft 200 has a cylindrical structure. A clamping fixture mounting position 210 is provided at one end of the central shaft 200 away from the fixed end 203. The clamping fixture mounting position 210 is provided with a threaded hole for connecting to the clamping fixture. The clamping fixture is existing technology. For example, the clamping fixture includes a bracket and a clamping arm fixed to the bracket. When clamping the car door cover, the clamping arm clamps onto the car door cover, thereby preventing the car door cover from moving during the hemming process.

[0032] like Figures 2 to 4 As shown, the spatial displacement mechanism includes a horizontal displacement mechanism 300 and a vertical displacement mechanism 400. The horizontal displacement mechanism 300 has a rotating seat 310 and an end seat 320 at both ends. The rotating seat 310 is a cylindrical structure and is sleeved on the central shaft 200. The end seat 320 is fixedly connected to the rotating mechanism 600. Multiple horizontal displacement mechanisms 300 are connected to the same rotating seat 310, and multiple end seats 320 are connected to the same rotating mechanism 600. The rotating mechanism 600 drives all the horizontal displacement mechanisms 300 to rotate synchronously. The vertical displacement mechanism 400 is fixedly connected to the output end of the horizontal displacement mechanism 300, and the horizontal displacement mechanism 300 drives the vertical displacement mechanism 400 to move horizontally. The steering mechanism 500 is fixedly connected to the output end of the vertical displacement mechanism 400, and the vertical displacement mechanism 400 drives the steering mechanism 500 to move vertically.

[0033] Preferred, such as Figure 4As shown, in this embodiment, the horizontal displacement mechanism 300 further includes a first lead screw 330, a guide rod 340, and a first motor 350. The two ends of the first lead screw 330 are rotatably connected to the rotating seat 310 and the end seat 320 via bearings. The two ends of the end seat 320 are fixedly connected to the rotating seat 310 and the end seat 320. The axes of the first lead screw 330 and the guide rod 340 are parallel. A lead screw nut is connected to the first lead screw 330. A sliding sleeve is connected to the guide rod 340. The lead screw nut and the sliding sleeve are fixedly connected to the vertical displacement mechanism 400. The first motor 350 is fixedly connected to the end seat 320. The first motor 350 and the first lead screw 330 are connected via a coupling. The first motor 350 drives the first lead screw 330 to rotate, thereby driving the vertical displacement mechanism 400 to slide along the axis of the guide rod 340.

[0034] like Figure 4 As shown, the vertical displacement mechanism 400 includes a vertical seat 410, a guide plate 420, a second lead screw 430, and a second motor 440. The vertical seat 410 is a flat plate structure. The lead screw nut and the sliding sleeve are fixedly connected to the vertical seat 410 by bolts. The guide plate 420 is fixedly connected to the inner side of the vertical seat 410 by bolts. The second lead screw 430 is rotatably connected to the vertical seat 410 through bearings and a bearing seat. The second motor 440 is fixedly connected to the vertical seat 410 by bolts. The output shaft of the second motor 440 is fixedly connected to the second lead screw 430. The second motor 440 drives the second lead screw 430 to rotate. A vertical slide block 450 is slidably connected to the guide plate 420. The vertical slide block 450 is threadedly connected to the second lead screw 430. The second motor 440 drives the vertical slide block 450 to slide in a straight line through the second lead screw 430.

[0035] The steering mechanism 500 is fixedly connected to the vertical slide 450 by bolts. The steering mechanism 500 includes a motor base 510, a third motor 520, and a steering shaft 530. The motor base 510 is fixedly connected to the vertical slide 450, the third motor 520 is fixedly connected to the motor base 510, and the steering shaft 530 is fixedly connected to the output shaft of the motor base 510. The third motor 520 is used to drive the steering shaft 530 to rotate. The steering shaft 530 has a round rod structure and is vertically arranged. The rolled edge end 700 is fixedly connected to the end of the steering shaft 530 away from the third motor 520. The steering shaft 530 is rotatably connected to the motor base 510 through a bearing. A fixing plate 531 is provided on the steering shaft 530, and the rolled edge end 700 is fixedly connected to the fixing plate 531.

[0036] In this embodiment, the rotating seat 310 is a hexagonal prism structure. The center of the rotating seat 310 has a through hole structure that mates with the central shaft 200. The central shaft 200 includes a steering section 201 and a mounting end 202. The outer diameter of the mounting end 202 is larger than the outer diameter of the steering section 201, so that the central shaft 200 also serves to support the horizontal displacement mechanism 300. The rotating seat 310 is sleeved on the steering section 201. Multiple first lead screws 330 and guide rods 340 are all connected to the rotating seat 310. There are six sets of first lead screws 330, guide rods 340, vertical displacement mechanism 400, and steering mechanism 500. There are two types of traditional hemming ends 700. Each pair of steering mechanisms 500 constitutes a hemming processing group, and each hemming processing group is responsible for a section of the edge of the car door cover.

[0037] like Figure 5 and Figure 6 As shown, the rotating mechanism 600 includes a rotating ring 610 and a driving member 620. The rotating ring 610 is a circular ring structure and is connected to the end seat 320. Multiple end seats 320 are fixedly connected to the rotating ring 610 by bolts. The driving member 620 is fixedly connected to the top plate 100 by bolts. The driving member 620 is used to drive the rotating ring 610 to rotate and at the same time limits the rotating ring 610 so that it can only rotate around itself.

[0038] like Figure 6 and Figure 8 As shown, the rotating ring 610 includes a bottom ring 611, a top ring 612, and a toothed pin 613. Both the bottom ring 611 and the top ring 612 are annular. The inner and outer diameters of the bottom ring 611 and the top ring 612 are the same. The bottom ring 611 and the top ring 612 are fixedly connected by bolts. The toothed pin 613 has a stepped shaft structure. Multiple toothed pins 613 are provided. The outer diameters of the two ends of the toothed pin 613 are smaller than the outer diameter of the middle section. The two ends of the toothed pin 613 are respectively engaged with the bottom ring 611 and the top ring 612. The toothed pin 613 is located between the bottom ring 611 and the top ring 612. Multiple toothed pins 613 are provided and are evenly distributed around the axis of the rotating ring 610 in the circumferential direction.

[0039] The driving component 620 includes a base 621, a top cover 622, a lifting rod 623, a guide wheel 624, a drive gear 625, and a fourth motor 626. The base 621 is an L-shaped block structure, and the top cover 622 is a plate structure. The base 621 and the top cover 622 are fixedly connected by bolts, forming a U-shaped structure. The lifting rod 623 is fixedly connected to the top cover 622 by welding or integral molding. In this embodiment, each top cover 622 is provided with at least two lifting rods 623, and the lifting rods 623 are fixedly connected to the top plate by bolts. On the 100, the guide wheel 624 is rotatably connected between the base 621 and the top cover 622 via a bearing. The fourth motor 626 is fixedly connected to the top cover 622 via bolts. The drive gear 625 is located between the base 621 and the top cover 622. The drive gear 625 is fixedly connected to the output shaft of the fourth motor 626 via an interference fit. The drive gear 625 meshes with the gear pin 613. When the fourth motor 626 rotates, it drives the bottom ring 611 to rotate via the gear pin 613. The edge of the guide wheel is located between the base 621 and the top cover 622.

[0040] In this embodiment, multiple rotating mechanisms 600 are provided, and the multiple rotating mechanisms 600 are evenly distributed around the axis of the central axis 200 in the circumferential direction.

[0041] In this embodiment, the hemming end 700 is the prior art. The hemming end 700 includes a hemming wheel 710 and a hemming seat 720. The hemming wheel 710 has different shapes depending on the processing sequence, such as a frustum-shaped or cylindrical shape. The hemming seat 720 is fixedly connected to the fixing plate 531 by bolts. The hemming wheel 710 is rotatably connected to the hemming seat 720 by bearings. The hemming seat 720 is a T-shaped seat.

[0042] In a preferred embodiment of this invention, the hemming device further includes a robotic arm, which is a prior art technology. The execution end of the robotic arm is fixedly connected to the top plate 100, and the robotic arm is used to place the hemming device onto the car door cover.

[0043] Example 2 As another embodiment of the present invention, the difference between this embodiment and embodiment 1 is that the robotic arm is replaced by a lifting device, which is used to drive the rolling edge processing device to rise and fall, and the lifting structure is fixed to the top plate 100.

[0044] In this embodiment, the lifting device is a hydraulic lifting cylinder, and multiple lifting devices are provided, which are evenly distributed upward around the axis of the central shaft 200.

[0045] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0046] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of this invention, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rolling edge processing device for automobile door covers, characterized in that, The hemming processing device includes: Includes a top plate (100), on which a central shaft (200) is provided, and a rotating mechanism (600) is fixedly connected to the top plate (100). The end of the central shaft (200) is provided with a clamping fixture mounting position (210) for installing clamping fixtures. Multiple spatial displacement mechanisms, wherein the rotating mechanism (600) drives the multiple spatial displacement mechanisms to rotate on a horizontal plane with the axis of the central shaft (200) as the rotation center; A steering mechanism (500) is installed at the output end of the spatial displacement mechanism. The spatial displacement mechanism drives the steering mechanism (500) to move along a horizontal straight line and a vertical straight line. The steering mechanism (500) includes a third motor (520) and a steering shaft (530). The steering shaft (530) is arranged in the vertical direction. The third motor (520) drives the steering shaft (530) to rotate around a vertical straight line. The hemmed end (700) is provided in various different types, and different types of the hemmed end (700) are installed on different steering shafts (530).

2. The automobile door cover hemming processing device according to claim 1, characterized in that, The spatial displacement mechanism includes: A horizontal displacement mechanism (300) is provided with a rotating seat (310) and an end seat (320) at both ends. The rotating seat (310) is a cylindrical structure and is sleeved on the central shaft (200). The end seat (320) is fixedly connected to the rotating mechanism (600). Multiple horizontal displacement mechanisms (300) are connected to the same rotating seat (310), and multiple end seats (320) are connected to the same rotating mechanism (600). A vertical displacement mechanism (400) is fixedly connected to the output end of the horizontal displacement mechanism (300), and a steering mechanism (500) is fixedly connected to the output end of the vertical displacement mechanism (400).

3. The automobile door cover hemming processing device according to claim 2, characterized in that, The horizontal displacement mechanism (300) is a lead screw linear displacement mechanism.

4. The automobile door cover hemming processing device according to claim 2, characterized in that, The vertical displacement mechanism (400) is a lead screw linear displacement mechanism.

5. The automobile door cover hemming processing device according to claim 1, characterized in that, The steering mechanism (500) includes: Motor mount (510); A third motor (520) is fixedly connected to the motor mount (510); A steering shaft (530) is fixedly connected to the output shaft of the motor mount (510). The third motor (520) is used to drive the steering shaft (530) to rotate. The steering shaft (530) is vertically arranged. The rolled edge end (700) is fixedly connected to the end of the steering shaft (530) away from the third motor (520). The steering shaft (530) is rotatably connected to the motor mount (510).

6. The automobile door cover hemming processing device according to any one of claims 1-5, characterized in that, The rotating mechanism (600) includes: A rotating ring (610), wherein the rotating ring (610) is a circular ring structure; A driving member (620) is fixedly connected to the top plate (100). The driving member (620) is used to drive the rotating ring (610) to rotate and simultaneously limit the rotation ring (610).

7. The automobile door cover hemming processing device according to claim 6, characterized in that, The rotating ring (610) includes: Bottom ring (611); The top ring (612), the bottom ring (611) and the top ring (612) are all annular. The inner diameter and outer diameter of the bottom ring (611) and the top ring (612) are the same. The bottom ring (611) and the top ring (612) are fixedly connected. A toothed pin (613) is provided. The toothed pin (613) is a stepped shaft structure. Multiple toothed pins (613) are provided. The outer diameter of both ends of the toothed pin (613) is smaller than the outer diameter of the middle section. The two ends of the toothed pin (613) are respectively engaged with the bottom ring (611) and the top ring (612). The toothed pin (613) is located between the bottom ring (611) and the top ring (612). Multiple toothed pins (613) are provided. The multiple toothed pins (613) are evenly distributed around the axis of the rotating ring (610) in the circumferential direction.

8. The automobile door cover hemming processing device according to claim 7, characterized in that, The drive unit (620) includes: The base (621) and the top cover (622) are fixedly connected, and the base (621) and the top cover (622) form a U-shaped structure. A suspension rod (623) is fixedly connected to the top cover (622) and the top plate (100); A guide wheel (624) is rotatably connected between the base (621) and the top cover (622), with the edge of the guide wheel (624) located between the base (621) and the top cover (622); A drive gear (625) and a fourth motor (626) are provided. The fourth motor (626) is fixedly connected to the top cover (622). The drive gear (625) is located between the base (621) and the top cover (622). The drive gear (625) is fixedly connected to the output shaft of the fourth motor (626). The drive gear (625) meshes with the gear pin (613).

9. The automobile door cover hemming processing device according to any one of claims 1-5, characterized in that, The hemming device also includes a robotic arm, the execution end of which is fixedly connected to the top plate (100).

10. The automobile door cover hemming processing apparatus according to any one of claims 1-5, characterized in that, The hemming processing device also includes a lifting device, which is used to drive the hemming processing device to rise and fall, and the lifting structure is fixed to the top plate (100).

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