Rear cover hanging adjusting device for automobile assembly line

Abstract

The utility model discloses a rear cover hanging and adjusting device for an automobile assembly line. The rear cover hanging and adjusting device is characterized in that an external mechanical arm is connected with an upper support; then the rear cover hanging and adjusting device is moved to the last station, and the rear cover workpiece is grabbed and fixed through the rear cover fixing clamp; then, the rear cover hanging adjusting device is moved to external equipment of the next station for position adjustment, and it is ensured that the rear cover hanging adjusting device and the vehicle body are assembled after being accurately positioned; automatic balance can be achieved under the action of gravity by means of rotational connection of the lower support and the upper support, the maximum rotation angle of the lower support relative to the upper support can be limited by means of the angle limiting assembly, load change and path deviation in the moving process are automatically compensated, and stability of the moving process is guaranteed; and meanwhile, four supporting connectors of the first spherical positioning mechanism, the second spherical positioning mechanism, the first cam bearing and the second cam bearing are used for being connected to external equipment, so that the angle of the rear cover hanging adjusting device can be flexibly adjusted to meet the positioning requirement of rear cover assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive assembly line technology, and in particular to a rear cover hanging adjustment device for automotive assembly lines. Background Technology

[0002] The body assembly and adjustment line is a crucial link in the automotive welding process, typically located at the end of the production line, responsible for the final assembly of the car body. This process relies primarily on manual labor and semi-automatic equipment; however, this method demands a high level of experience and technical skill from workers, leading to inconsistencies in efficiency and quality.

[0003] The commonly used adjustment methods currently rely mainly on multiple manual processes, and multi-process operation is achieved by refining process points. This method has the following drawbacks: (1) Strong dependence on experience: When workers lack experience, it is easy to cause inconsistent assembly quality, which affects production efficiency; (2) High operational complexity: Multi-process design increases the possibility of errors and requires high comprehensive quality of workers; (3) Insufficient flexibility: When different models or production needs change, the existing equipment is difficult to adapt quickly, which reduces the response speed of the production line. Utility Model Content

[0004] The purpose of this utility model is to provide a rear cover hanging and adjusting device for automobile assembly lines, which integrates a structure design of handling and positioning tooling, and simultaneously meets the needs of handling, loading, and positioning.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a rear cover hanging and adjusting device for an automobile assembly line, comprising a rear cover fixing clamp for holding the rear cover, a central hanging mechanism disposed in the middle of the rear cover fixing clamp, a first spherical positioning mechanism disposed at a corner point at the front end of the rear cover fixing clamp, a second spherical positioning mechanism disposed at another corner point at the front end of the rear cover fixing clamp and symmetrical to the first spherical positioning mechanism, a first cam bearing disposed at a corner point at the rear end of the rear cover fixing clamp, and a second cam bearing disposed at another corner point at the rear end of the rear cover fixing clamp and symmetrical to the first cam bearing; the central hanging mechanism includes an upper support, a lower support rotatably connected to the upper support, and an angle limiting component disposed between the upper support and the lower support and used to limit the rotation angle of the lower support, the lower support being disposed in the middle of the rear cover fixing clamp; the four support points of the first spherical positioning mechanism, the second spherical positioning mechanism, the first cam bearing, and the second cam bearing during installation and use are located on the same plane, and the first spherical positioning mechanism, the second spherical positioning mechanism, the first cam bearing, and the second cam bearing are used to connect to external equipment.

[0006] By adopting the above technical solution, during the use of the rear cover hanging adjustment device, first connect the external robotic arm to the upper support of the central hanging mechanism; then move the rear cover hanging adjustment device to the previous working station, grab and fix the rear cover workpiece through the rear cover fixing fixture; then move the rear cover hanging adjustment device to the external equipment at the next working station (such as equipment with a left floating adjustment device and a right floating adjustment device) to adjust the position, ensure precise positioning with the vehicle body and then assemble; and in the central hanging mechanism, the rotational connection between the lower support and the upper support can achieve automatic balance under the action of gravity, and the angle limiting component can limit the maximum rotational angle of the lower support relative to the upper support, realizing automatic compensation for the load change and path deviation during the movement of the central hanging mechanism, ensuring the stability of the central hanging mechanism during movement; at the same time, the four supports of the first spherical positioning mechanism, the second spherical positioning mechanism, the first cam bearing, and the second cam bearing are used to connect to the external equipment, enabling the rear cover hanging adjustment device to flexibly adjust the angle to meet the positioning requirements for rear cover assembly.

[0007] A further setting of the present utility model is that: the angle limiting component includes two buffer blocks arranged on the lower support and distributed on both sides of the rotation central axis, and two adjusting screws whose upper ends are threadedly connected to the upper support and whose lower ends are used to abut against the buffer blocks for limiting during the rotation of the lower support.

[0008] By adopting the above technical solution, when the lower support rotates relative to the upper support, by adjusting the initial distance between the lower end of the adjusting screw and the buffer block, the maximum rotation angle of the lower support relative to the upper support can be adjusted and controlled.

[0009] A further setting of the present utility model is that: the lower support is provided with a lower connecting seat in a "U" shape, the upper support is provided with an upper connecting block having a connecting hole, the lower connecting seat is provided with a connecting shaft passing through the connecting hole of the upper connecting block, a bushing is sleeved on the connecting shaft and abuts against the inner wall of the connecting hole, and two rings are sleeved on the connecting shaft and respectively abut between the inner wall of the lower connecting seat and the side surface of the upper connecting block.

[0010] By adopting the above technical solution, during the process of the upper support and the lower support being rotationally connected by a rotating shaft, by setting the bushing and the rings, the friction coefficient during the relative rotation of the upper support and the lower support can be reduced, and the frictional force during relative rotation can be reduced.

[0011] A further setting of the present utility model is that: one end of the connecting shaft passes through the lower connecting seat, a washer is sleeved on the end of the connecting shaft passing through the lower connecting seat and abuts against the side surface of the lower connecting seat, a nut is provided at the end of the connecting shaft passing through the lower connecting seat for pressing the washer, a limiting plane is provided at the end of the connecting shaft that does not penetrate into the lower connecting seat, and a limiting clamping plate is provided on the side surface of the lower connecting seat and abuts against the limiting plane.

[0012] By adopting the above technical solution, one end of the connecting shaft is fixed by a washer and nut during installation, which has the function of preventing loosening. At the same time, if the connecting shaft rotates due to friction during the relative rotation of the upper and lower supports, the connection with the nut may become loose. Therefore, by setting a limit plate against the limiting plane of the end of the connecting shaft that has not penetrated the lower connecting seat, it has the function of fixing the connecting shaft and preventing rotation.

[0013] A further feature of this invention is that the first spherical positioning mechanism includes a first connecting component for connecting to the rear cover fixing clamp, a first intermediate shaft disposed on the first connecting component, a first sphere disposed at the end of the first intermediate shaft, and a spherical support. The spherical support is provided with a hemispherical groove for the first sphere to be embedded and rotated. One side of the spherical support is provided with a movable groove that communicates with the hemispherical groove and allows the first intermediate shaft to move with the first sphere. In use, the spherical support is used to be installed on an external device for the first sphere to be embedded and installed.

[0014] By adopting the above technical solution, the spherical support is used to be installed on an external device for the first sphere to be embedded in. The first sphere can rotate at any angle within the spherical support (provided that the first intermediate shaft does not interfere with the spherical support), thus facilitating the adjustment of the support point located at the first spherical positioning mechanism when connected through an external device.

[0015] The present invention is further configured as follows: the first connecting assembly includes a first adjusting seat for fixing on the rear cover fixing clamp, a first horizontal adjusting seat for fixing on the rear cover fixing clamp and in the shape of an inverted "L", and a first adjusting pad pressed between the first adjusting seat and the first horizontal adjusting seat. The first intermediate shaft is disposed on the first adjusting seat. The first adjusting seat and the rear cover fixing clamp are connected by bolts and nuts, and the installation position is adjusted by the cooperation of the oblong hole and the through hole at the connection. The thickness of the first adjusting pad is selected according to the installation position of the first adjusting seat. The first horizontal adjusting seat and the first adjusting seat are fixed together by bolts passing through the first adjusting pad.

[0016] By adopting the above technical solution, when the first connecting component of the first spherical positioning mechanism is installed on the rear cover fixing clamp, it is first positioned by installing the first horizontal adjustment seat. Then, by changing the thickness of the first adjustment pad, the first adjustment seat and the rear cover fixing clamp are connected by bolts and nuts, and the installation position is adjusted by the cooperation of the waist-shaped hole and the through hole at the connection point. The installation position (Y-axis) of the first adjustment seat can be finely adjusted.

[0017] A further feature of this invention is that the second spherical positioning mechanism includes a second connecting component for connecting to the rear cover fixing clamp, a second intermediate shaft disposed on the second connecting component, a second sphere disposed at the end of the second intermediate shaft, and an arc-shaped support. The arc-shaped support is provided with an arc-shaped groove for the second sphere and the second intermediate shaft to be embedded and rotated. The arc-shaped support is used to be installed on an external device for the second sphere to be embedded and installed.

[0018] By adopting the above technical solution, the arc surface support is used to install on external equipment for the second sphere to be embedded and installed. The second sphere can rotate at any angle within the spherical support (provided that the second intermediate shaft does not interfere with the arc surface support). Thus, when connected through external equipment, it has the function of conveniently adjusting the support point located at the second spherical positioning mechanism. At the same time, the arc surface groove on the arc surface support allows the second sphere to move along the extension direction (X-axis) of the arc surface groove while rotating at any angle to compensate for positional deviation.

[0019] The present invention is further configured such that: the second connecting assembly includes a second adjusting seat for fixing to the rear cover fixing clamp, a second horizontal adjusting seat for fixing to the rear cover fixing clamp and being in the shape of an inverted "L", and a second adjusting pad pressed between the second adjusting seat and the second horizontal adjusting seat; the second intermediate shaft is disposed on the second adjusting seat; the second adjusting seat and the rear cover fixing clamp are connected by bolts and nuts, and the installation position is adjusted by the cooperation of a waist-shaped hole and a through hole at the connection point; the thickness of the second adjusting pad is selected according to the installation position of the second adjusting seat; and the second horizontal adjusting seat and the second adjusting seat are fixed together by bolts passing through the second adjusting pad.

[0020] By adopting the above technical solution, when the second connecting component of the second spherical positioning mechanism is installed on the rear cover fixing clamp, it is first positioned by installing the second horizontal adjustment seat. Then, by changing the thickness of the second adjustment pad, the second adjustment seat and the rear cover fixing clamp are connected by bolts and nuts, and the installation position is adjusted by the cooperation of the waist-shaped hole and the through hole at the connection point. The installation position (Y-axis) of the second adjustment seat can be finely adjusted. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the central suspension mechanism of this utility model;

[0023] Figure 3 This is a structural sectional view of the central suspension mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the first spherical positioning mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the second spherical positioning mechanism of this utility model;

[0026] Figure 6 This is a diagram showing the usage state of this utility model in conjunction with external equipment (such as equipment with a left floating adjustment device and a right floating adjustment device).

[0027] Reference numerals: 1. Rear cover fixing clamp; 2. Central hanging mechanism; 2-1. Upper support; 2-1-1. Connecting block; 2-2. Lower support; 2-2-1. Connecting seat; 2-3. Angle limiting assembly; 2-3-1. Buffer block; 2-3-2. Adjusting screw; 2-4. Connecting shaft; 2-5. Bushing; 2-6. Ring; 2-7. Washer; 2-8. Nut; 2-9. Limiting plate; 3. First spherical positioning mechanism; 3-1. First connecting assembly; 3-1-1. First adjusting seat; 3-1-2. First horizontal adjustment... 3-1-3, First Adjusting Pad; 3-2, First Intermediate Shaft; 3-3, First Sphere; 3-4, Spherical Support; 3-4-1, Hemispherical Groove; 3-4-2, Movable Groove; 4, Second Spherical Positioning Mechanism; 4-1, Second Connecting Assembly; 4-1-1, Second Adjusting Seat; 4-1-2, Second Horizontal Adjustment Seat; 4-1-3, Second Adjusting Pad; 4-2, Second Intermediate Shaft; 4-3, Second Sphere; 4-4, Arc Support; 4-4-1, Arc Groove; 5, First Cam Bearing; 6, Second Cam Bearing. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example: A rear cover hanging adjustment device for automobile assembly lines, such as Figure 1 As shown, it includes a rear cover fixing clamp 1 for clamping the rear cover, a central hanging mechanism 2 located in the middle of the rear cover fixing clamp 1, a first spherical positioning mechanism 3 located at a corner point at the front end of the rear cover fixing clamp 1, a second spherical positioning mechanism 4 located at another corner point at the front end of the rear cover fixing clamp 1 and symmetrical to the first spherical positioning mechanism 3, a first cam bearing 5 located at a corner point at the rear end of the rear cover fixing clamp 1, and a second cam bearing 6 located at another corner point at the rear end of the rear cover fixing clamp 1 and symmetrical to the first cam bearing 5.

[0030] like Figure 1 As shown, the back cover fixing clamp 1 consists of a main frame and a clamping mechanism set on the main frame for clamping and fixing. The clamping mechanism can be any structure that can clamp and fix the back cover, which is not the focus of this application and will not be elaborated on here.

[0031] As shown Figures 1 to 3 in the figure, the central hanging mechanism 2 includes an upper support 2-1, a lower support 2-2 rotatably connected to the upper support 2-1, and an angle limiting component 2-3 disposed between the upper support 2-1 and the lower support 2-2 and used to limit the rotation angle of the lower support 2-2. The lower support 2-2 is disposed in the middle of the rear cover fixing fixture 1. The plane where the lower support 2-2 is located is inclined relative to the plane where the upper support 2-1 is located.

[0032] As shown Figure 2 and Figure 3 in the figure, a lower connecting seat 2-2-1 in a "U" shape is disposed on the lower support 2-2, an upper connecting block 2-1-1 with a connecting hole is disposed on the upper support 2-1, a connecting shaft 2-4 passing through the connecting hole of the upper connecting block 2-1-1 is disposed on the lower connecting seat 2-2-1, a bushing 2-5 abutting against the inner wall of the connecting hole is sleeved on the connecting shaft 2-4, and two rings 2-6 respectively abutting between the inner wall of the lower connecting seat 2-2-1 and the side surface of the upper connecting block 2-1-1 are sleeved on the connecting shaft 2-4. One end of the connecting shaft 2-4 passes through the lower connecting seat 2-2-1, a washer 2-7 abutting against the side surface of the lower connecting seat 2-2-1 is sleeved on the end of the connecting shaft 2-4 passing through the lower connecting seat 2-2-1, a nut 2-8 for pressing the washer 2-7 is disposed on the end of the connecting shaft 2-4 passing through the lower connecting seat 2-2-1, a limiting plane is disposed on the end of the connecting shaft 2-4 not inserted into the lower connecting seat 2-2-1, and a limiting clamping plate 2-9 abutting against the limiting plane is disposed on the side surface of the lower connecting seat 2-2-1. The angle limiting component 2-3 includes two buffer blocks 2-3-1 disposed on the lower support 2-2 and distributed on both sides of the rotation central axis, and two adjusting screws 2-3-2 with the upper ends threadedly connected to the upper support 2-1 and used to abut against the buffer blocks 2-3-1 for limiting during the rotation of the lower support 2-2.

[0033] As shown Figure 1 in the figure, the four support points of the first spherical positioning mechanism 3, the second spherical positioning mechanism 4, the first cam bearing 5, and the second cam bearing 6 during installation and use are located on the same plane, and the first spherical positioning mechanism 3, the second spherical positioning mechanism 4, the first cam bearing 5, and the second cam bearing 6 are used to connect to external equipment.

[0034] As shown Figure 1 and Figure 4As shown, the first spherical positioning mechanism 3 includes a first connecting component 3-1 for connecting to the rear cover fixing clamp 1, a first intermediate shaft 3-2 disposed on the first connecting component 3-1, a first sphere 3-3 disposed at the end of the first intermediate shaft 3-2, and a spherical support 3-4. The spherical support 3-4 is provided with a hemispherical groove 3-4-1 for the first sphere 3-3 to be inserted and rotated. One side of the spherical support 3-4 is provided with a movable groove 3-4-2 that communicates with the hemispherical groove 3-4-1 and allows the first intermediate shaft 3-2 to move with the first sphere 3-3. When in use, the spherical support 3-4 is used to be installed on an external device for the first sphere 3-3 to be inserted and installed. The first connecting assembly 3-1 includes a first adjusting seat 3-1-1 for fixing to the rear cover fixing clamp 1, a first horizontal adjusting seat 3-1-2 for fixing to the rear cover fixing clamp 1 and in the shape of an inverted "L", and a first adjusting pad 3-1-3 pressed between the first adjusting seat 3-1-1 and the first horizontal adjusting seat 3-1-2. A first intermediate shaft 3-2 is disposed on the first adjusting seat 3-1-1. The first adjusting seat 3-1-1 and the rear cover fixing clamp 1 are connected by bolts and nuts 2-8, and the installation position is adjusted by the cooperation of the oblong hole and the through hole at the connection point (the through hole of the first adjusting seat 3-1-1 corresponds to the oblong hole of the rear cover, and the oblong hole of the first adjusting seat 3-1-1 corresponds to the through hole of the rear cover). The thickness of the first adjusting pad 3-1-3 is selected according to the installation position of the first adjusting seat 3-1-1. The first horizontal adjusting seat 3-1-2 and the first adjusting seat 3-1-1 are fixed together by bolts passing through the first adjusting pad 3-1-3.

[0035] like Figure 1 and Figure 5As shown, the second spherical positioning mechanism 4 includes a second connecting component 4-1 for connecting to the rear cover fixing clamp 1, a second intermediate shaft 4-2 disposed on the second connecting component 4-1, a second sphere 4-3 disposed at the end of the second intermediate shaft 4-2, and an arc surface support 4-4. The arc surface support 4-4 is provided with an arc surface groove 4-4-1 for the second sphere 4-3 and the second intermediate shaft 4-2 to be inserted and rotated. The arc surface support 4-4 is used to be installed on an external device for the second sphere 4-3 to be inserted and installed. The second connecting assembly 4-1 includes a second adjusting seat 4-1-1 for fixing to the rear cover fixing clamp 1, a second horizontal adjusting seat 4-1-2 for fixing to the rear cover fixing clamp 1 and in the shape of an inverted "L", and a second adjusting pad 4-1-3 pressed between the second adjusting seat 4-1-1 and the second horizontal adjusting seat 4-1-2. The second intermediate shaft 4-2 is disposed on the second adjusting seat 4-1-1. The second adjusting seat 4-1-1 and the rear cover fixing clamp 1 are connected by bolts and nuts 2-8, and the installation position is adjusted by the cooperation of the waist-shaped hole and the through hole at the connection point (similar to the first connecting assembly 3-1). The thickness of the second adjusting pad 4-1-3 is selected according to the installation position of the second adjusting seat 4-1-1. The second horizontal adjusting seat 4-1-2 and the second adjusting seat 4-1-1 are fixed together by bolts passing through the second adjusting pad 4-1-3.

[0036] like Figure 1 As shown, a support block (not marked in the figure) for mounting on an external device is provided below the first cam bearing 5 and the second cam bearing 6 to enable the rear cover hanging adjustment device to cooperate with the external device.

[0037] Implementation Results: During the use of this rear cover hanging and adjusting device, the external robotic arm is first connected to the upper support 2-1 of the central hanging mechanism 2; then, the rear cover hanging and adjusting device is moved to the previous workstation, where the rear cover workpiece is gripped and fixed by the rear cover fixing clamp 1; then, the rear cover hanging and adjusting device is moved to the next workstation's external equipment (e.g., equipment with left and right floating adjustment devices) for position adjustment, ensuring precise positioning with the vehicle body before assembly; and within the central hanging mechanism 2, the rotational connection between the lower support 2-2 and the upper support 2-1... The device is designed to achieve automatic balance under gravity. The angle limiting component 2-3 can limit the maximum rotation angle of the lower support 2-2 relative to the upper support 2-1, thereby automatically compensating for load changes and path deviations of the central suspension mechanism 2 during movement and ensuring the stability of the central suspension mechanism 2 during movement. At the same time, the four supports of the first spherical positioning mechanism 3, the second spherical positioning mechanism 4, the first cam bearing 5, and the second cam bearing 6 are used to connect to external equipment, so that the rear cover suspension adjustment device can flexibly adjust the angle to meet the positioning requirements of the rear cover assembly.

[0038] This technology can also be applied to the "A Six-Degree-of-Freedom Adjustment System for Automotive Assembly Line Door Automation" with patent number ZL202223286632.8, which uses machine learning to automate assembly and eliminates the reliance on manual adjustment.

[0039] When the lower support 2-2 rotates relative to the upper support 2-1, the maximum rotation angle of the lower support 2-2 relative to the upper support 2-1 can be adjusted by adjusting the initial distance between the lower end of the adjusting screw 2-3-2 and the buffer block 2-3-1. During the rotational connection between the upper support 2-1 and the lower support 2-2 via the rotating shaft, the bushing 2-5 and the ring 2-6 are used to reduce the coefficient of friction and frictional force during relative rotation. During installation, one end of the connecting shaft 2-4 is fixed by the washer 2-7 and the nut 2-8, which serves to prevent loosening. Meanwhile, if the connecting shaft 2-4 rotates due to friction during the relative rotation of the upper support 2-1 and the lower support 2-2, the connection with the nut 2-8 will become loose. Therefore, by setting a limiting plate 2-9 to abut against the limiting plane at the end of the connecting shaft 2-4 that has not penetrated the lower connecting seat 2-2-1, it has the function of fixing the connecting shaft 2-4 and preventing rotation.

[0040] The spherical support 3-4 is used to install on external equipment for the first sphere 3-3 to be embedded in. The first sphere 3-3 can rotate at any angle within the spherical support 3-4 (provided that the first intermediate shaft 3-2 does not interfere with the spherical support 3-4). This allows for convenient adjustment of the support point located at the first spherical positioning mechanism 3 when connected to external equipment. When the first connecting component 3-1 of the first spherical positioning mechanism 3 is installed on the rear cover fixing clamp 1, it is first positioned by installing the first horizontal adjusting seat 3-1-2. Then, by changing the thickness of the first adjusting shim 3-1-3, the first adjusting seat 3-1-1 and the rear cover fixing clamp 1 are connected by bolts and nuts 2-8. The installation position is adjusted by the cooperation of the oblong hole and the through hole at the connection point, which allows for fine adjustment of the installation position (Y-axis) of the first adjusting seat 3-1-1.

[0041] The arc surface support 4-4 is used to install on external equipment for the second sphere 4-3 to be embedded in. The second sphere 4-3 can rotate at any angle within the spherical support 3-4 (provided that the second intermediate shaft 4-2 does not interfere with the arc surface support 4-4). This allows for convenient adjustment of the support point located at the second spherical positioning mechanism 4 when connected to external equipment. At the same time, the arc surface groove 4-4-1 on the arc surface support 4-4 allows the second sphere 4-3 to move along the extension direction (X-axis) of the arc surface groove 4-4-1 while rotating at any angle to compensate for positional deviations. When the second connecting component 4-1 of the second spherical positioning mechanism 4 is installed on the rear cover fixing clamp 1, it is first positioned by installing the second horizontal adjusting seat 4-1-2. Then, by changing the thickness of the second adjusting pad 4-1-3, the second adjusting seat 4-1-1 and the rear cover fixing clamp 1 are connected by bolts and nuts 2-8. The installation position is adjusted by the cooperation of the waist-shaped hole and the through hole at the connection point. The installation position (Y-axis) of the second adjusting seat 4-1-1 can be finely adjusted.

[0042] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A rear cover hanging adjustment device for automobile assembly lines, characterized in that: It includes a rear cover fixing fixture (1) for clamping the rear cover, a central hanging mechanism (2) arranged in the middle of the rear cover fixing fixture (1), a first spherical positioning mechanism (3) arranged at one corner point at the front end of the rear cover fixing fixture (1), a second spherical positioning mechanism (4) arranged at the other corner point at the front end of the rear cover fixing fixture (1) and symmetric with the first spherical positioning mechanism (3), a first cam bearing (5) arranged at one corner point at the rear end of the rear cover fixing fixture (1), and a second cam bearing (6) arranged at the other corner point at the rear end of the rear cover fixing fixture (1) and symmetric with the first cam bearing (5); The central hanging mechanism (2) includes an upper support (2-1), a lower support (2-2) rotatably connected to the upper support (2-1), and an angle limiting component (2-3) arranged between the upper support (2-1) and the lower support (2-2) and used to limit the rotation angle of the lower support (2-2), and the lower support (2-2) is arranged in the middle of the rear cover fixing fixture (1); The four support points of the first spherical positioning mechanism (3), the second spherical positioning mechanism, the first cam bearing (5), and the second cam bearing (6) during installation and use are on the same plane, and the first spherical positioning mechanism (3), the second spherical positioning mechanism (4), the first cam bearing (5), and the second cam bearing (6) are used to connect to external equipment.

2. The rear cover hanging and adjusting device for an automobile assembly line according to claim 1, characterized in that: The angle limiting component (2-3) includes two buffer blocks (2-3-1) arranged on the lower support (2-2) and distributed on both sides of the rotation central axis, and two adjusting screws (2-3-2) whose upper ends are threadedly connected to the upper support (2-1) and whose lower ends are used to abut against the buffer blocks (2-3-1) during the rotation of the lower support (2-2) for limiting.

3. The rear cover hanging adjustment device for an automobile assembly line according to claim 2, characterized in that: A lower connecting seat (2-2-1) in a "U" shape is arranged on the lower support (2-2), an upper connecting block (2-1-1) with a connecting hole is arranged on the upper support (2-1), a connecting shaft (2-4) passing through the connecting hole of the upper connecting block (2-1-1) is arranged on the lower connecting seat (2-2-1), a shaft sleeve (2-5) abutting against the inner wall of the connecting hole is sleeved on the connecting shaft (2-4), and two rings (2-6) respectively abutting between the inner wall of the lower connecting seat (2-2-1) and the side surface of the upper connecting block (2-1-1) are sleeved on the connecting shaft (2-4).

4. A rear cover hanging adjustment device for an automobile assembly line according to claim 3, characterized in that: One end of the connecting shaft (2-4) passes through the lower connecting seat (2-2-1), a washer (2-7) abutting against the side surface of the lower connecting seat (2-2-1) is sleeved on the end of the connecting shaft (2-4) passing through the lower connecting seat (2-2-1), a nut (2-8) used to press the washer (2-7) is arranged at the end of the connecting shaft (2-4) passing through the lower connecting seat (2-2-1), a limiting plane is arranged at the end of the connecting shaft (2-4) not penetrating into the lower connecting seat (2-2-1), and a limiting card plate (2-9) abutting against the limiting plane is arranged on the side surface of the lower connecting seat (2-2-1).

5. A rear cover hanging adjustment device for an automobile assembly line according to claim 1, characterized in that: The first spherical positioning mechanism (3) includes a first connecting component (3-1) for connecting to the rear cover fixing clamp (1), a first intermediate shaft (3-2) disposed on the first connecting component (3-1), a first sphere (3-3) disposed at the end of the first intermediate shaft (3-2), and a spherical support (3-4). The spherical support (3-4) is provided with a hemispherical groove (3-4-1) for the first sphere (3-3) to be inserted and rotated. One side of the spherical support (3-4) is provided with a movable groove (3-4-2) that communicates with the hemispherical groove (3-4-1) and allows the first intermediate shaft (3-2) to move with the first sphere (3-3). The spherical support (3-4) is used to be installed on an external device for the first sphere (3-3) to be inserted and installed.

6. A rear cover hanging and adjusting device for an automobile assembly line according to claim 5, characterized in that: The first connecting assembly (3-1) includes a first adjusting seat (3-1-1) for fixing to the rear cover fixing clamp (1), a first horizontal adjusting seat (3-1-2) for fixing to the rear cover fixing clamp (1) and in the shape of an inverted "L", and a first adjusting pad (3-1-3) pressed between the first adjusting seat (3-1-1) and the first horizontal adjusting seat (3-1-2). The first intermediate shaft (3-2) is disposed on the first adjusting seat (3-1-1). The first adjusting seat (3-1-1) and the rear cover fixing clamp (1) are connected by bolts and nuts (2-8) and the installation position is adjusted by the cooperation of the waist-shaped hole and the through hole at the connection. The thickness of the first adjusting pad (3-1-3) is selected according to the installation position of the first adjusting seat (3-1-1). The first horizontal adjusting seat (3-1-2) and the first adjusting seat (3-1-1) are fixed together by bolts passing through the first adjusting pad (3-1-3).

7. A rear cover hanging and adjusting device for an automobile assembly line according to claim 1, characterized in that: The second spherical positioning mechanism (4) includes a second connecting component (4-1) for connecting to the rear cover fixing clamp (1), a second intermediate shaft (4-2) disposed on the second connecting component (4-1), a second sphere (4-3) disposed at the end of the second intermediate shaft (4-2), and an arc surface support (4-4). The arc surface support (4-4) is provided with an arc surface groove (4-4-1) for the second sphere (4-3) and the second intermediate shaft (4-2) to be inserted and rotated. The arc surface support (4-4) is used to be installed on an external device for the second sphere (4-3) to be inserted and installed.

8. A rear cover hanging and adjusting device for an automobile assembly line according to claim 7, characterized in that: The second connecting assembly (4-1) includes a second adjusting seat (4-1-1) for fixing to the rear cover fixing clamp (1), a second horizontal adjusting seat (4-1-2) for fixing to the rear cover fixing clamp (1) and in the shape of an inverted "L", and a second adjusting pad (4-1-3) pressed between the second adjusting seat (4-1-1) and the second horizontal adjusting seat (4-1-2). The second intermediate shaft (4-2) is disposed on the second adjusting seat (4-1-1). The second adjusting seat (4-1-1) and the rear cover fixing clamp (1) are connected by bolts and nuts (2-8), and the installation position is adjusted by the cooperation of the waist-shaped hole and the through hole at the connection. The thickness of the second adjusting pad (4-1-3) is selected according to the installation position of the second adjusting seat (4-1-1). The second horizontal adjusting seat (4-1-2) and the second adjusting seat (4-1-1) are fixed together by bolts passing through the second adjusting pad (4-1-3).

Images