Automobile rear cover assembly fixture

Abstract

The invention discloses an automobile rear cover assembling clamp which comprises a mounting support, the upper end of the mounting support is fixedly arranged at the lower end of an angle adjusting assembly, anti-disengagement sliding blocks are fixedly arranged on the two sides of the lower end of the mounting support, anti-disengagement sliding rails are arranged on the anti-disengagement sliding blocks in a sliding mode and matched with the anti-disengagement sliding blocks, and sliding seats are fixedly arranged on the anti-disengagement sliding rails. The two ends of the bolt installation assembly are fixedly connected with the two sliding seats correspondingly, the two sliding seats are each provided with a rear cover clamping and positioning assembly matched with an automobile rear cover and an automobile body positioning assembly matched with an automobile body, and the two sides of each sliding seat are each provided with a limiting block matched with the two ends of the corresponding anti-disengaging sliding rail. One end of the reset piece is fixedly connected with the limiting block, and the other end of the reset piece is fixedly connected with the anti-disengaging sliding block. Through cooperative use of the installation support and other structures, accurate positioning and installation can be achieved more quickly, the speed of the installation process is higher, the assembly efficiency is effectively improved, the situation of collision is avoided, and damage to a vehicle is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile assembly, in particular to an automobile rear cover assembly fixture. Background Art

[0002] In the process of assembling the rear cover of a car to a car, it is not only necessary to accurately install the rear cover on the car, but also to fix the rear cover on the car with screws. In the prior art, the rear cover of a car is manually positioned on the car and then the screws are manually tightened. Due to the large mass of the rear cover of the car, the manual precise positioning process is cumbersome. Excessive force during the positioning process can easily cause bumps, resulting in the need for subsequent repairs. In addition, the manual tightening of the screws takes a long time and many steps, which ultimately leads to low assembly efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an automobile rear cover assembly fixture.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] The automobile rear cover assembly fixture comprises a mounting bracket, an anti-slipping slider, an anti-slipping slide rail, a sliding seat, a limiting block, a resetting member, a rear cover clamping and positioning component, a vehicle body positioning component, a bolt mounting component and an angle adjustment component, wherein the upper end of the mounting bracket is fixedly arranged on the lower end of the angle adjustment component, the anti-slipping slider is fixedly arranged on both sides of the lower end of the mounting bracket, the anti-slipping slide rail is slidably arranged on the anti-slipping slider and cooperates with the anti-slipping slider, the sliding seat is fixedly arranged on the anti-slipping slide rail, both ends of the bolt mounting component are fixedly connected to two sliding seats respectively, the two sliding seats are provided with the rear cover clamping and positioning component that cooperates with the automobile rear cover, and the vehicle body positioning component that cooperates with the automobile body, the limiting blocks that cooperate with both ends of the anti-slipping slide rail are arranged on both sides of the sliding seat, one end of the resetting member is fixedly connected to the limiting block, and the other end of the resetting member is fixedly connected to the anti-slipping slider, and the anti-slipping slide rails on the two sliding seats are arranged parallel to each other.

[0006] Furthermore, the bolt installation assembly includes a fixed block, a movable rod, a centering block, a sliding block, a connecting rod, a rotating rod, an adjusting rod, a floating adjusting component and a bolt installation gun, the fixed blocks are fixedly arranged on the two sliding seats, the movable rod is slidably arranged on the two fixed blocks, the centering block and the sliding block are both slidably arranged on the movable rod, two sliding blocks are arranged between the two fixed blocks, the two sliding blocks are respectively fixedly arranged on the two ends of the connecting rod, the centering block is fixedly arranged on the middle part of the connecting rod, and the centering block and the sliding block do not rotate relative to the fixed block, the middle part of the rotating rod is rotatably arranged on the centering block, the two ends of the rotating rod are respectively hinged to one end of the two adjusting rods, the other ends of the two adjusting rods are respectively hinged to the two fixed blocks, the floating adjusting components are respectively fixedly arranged on the two sliding blocks, and the bolt installation gun is arranged on the floating adjusting component.

[0007] Furthermore, a fixed shaft is fixedly arranged on the middle part of the centering block, and the middle part of the rotating rod is rotatably arranged on the fixed shaft.

[0008] Furthermore, the rear cover clamping and positioning assembly includes a first clamping cylinder, a second clamping cylinder, a first clamping block, a second clamping block, a third clamping block and a fourth clamping block. The first clamping cylinder and the second clamping cylinder are both arranged on both sides of the same sliding seat. The first clamping block and the second clamping block are both fixedly arranged on the output part of the first clamping cylinder. The third clamping block and the fourth clamping block are both fixedly arranged on the output part of the second clamping cylinder. The first clamping block cooperates with the second clamping block, and the third clamping block cooperates with the fourth clamping block.

[0009] Furthermore, the vehicle body positioning assembly includes a positioning cylinder, a first positioning block and a manual positioning component, the fixing portion of the positioning cylinder is fixedly arranged on one side of the sliding seat, the first positioning block is fixedly arranged on the output portion of the positioning cylinder, and the manual positioning portion is fixedly arranged on the other side of the sliding seat.

[0010] Furthermore, the manual positioning component includes a positioning frame, a fixing sleeve, a handle rod, a pushing rod, a guide rod, a positioning plate, a positioning end and a second positioning block. The upper end of the positioning frame is fixedly connected to the sliding seat, the fixing sleeve is fixedly arranged on the middle part of the positioning frame, the guide rod is slidably arranged in the fixing sleeve, one end of the guide rod is fixedly connected to the positioning plate, the positioning end and the second positioning block are fixedly arranged on the positioning plate, the other end of the guide rod is hinged to one end of the pushing rod, the other end of the pushing rod is hinged to the middle part of the handle rod, and the lower end of the handle rod is hinged to the lower end of the positioning frame.

[0011] Further, the angle adjustment assembly includes an upper connecting seat, a lower connecting seat, an angle adjustment block, a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are rotatably arranged on the angle adjustment block, the first rotating shaft and the second rotating shaft are arranged perpendicular to each other and do not intersect, both ends of the first rotating shaft are fixedly arranged on the upper connecting seat, and both ends of the second rotating shaft are fixedly arranged on the lower connecting seat, and the lower connecting seat is connected to the mounting bracket.

[0012] Furthermore, four balance springs are arranged between the upper connecting seat and the lower connecting seat, and the balance springs are arranged between the end of the first rotating shaft and the end of the second rotating shaft.

[0013] Furthermore, four limiting rods cooperating with the balance spring are arranged on the lower connecting seat, and spherical ends cooperating with the upper connecting seat are arranged on the ends of the limiting rods.

[0014] Furthermore, a guide rail is fixedly provided on the lower connecting seat, a guide block cooperating with the guide rail is provided on the guide rail, and the guide block is fixedly connected to the mounting bracket.

[0015] The beneficial effects of the present invention are:

[0016] 1) In this technology, by using the structures such as the mounting bracket, the rear cover clamping and positioning assembly, the body positioning assembly, the bolt mounting assembly and the angle adjustment assembly in coordination, precise positioning and installation can be achieved more quickly, the installation process is faster, the assembly efficiency is effectively improved, and there will be no collision and no damage to the vehicle.

[0017] 2) In this technology, the limit block has two functions: one is to prevent the anti-slip slider from detaching from the two ends of the anti-slip rail; the other is to install a reset spring. Under the action of the reset spring, the anti-slip slider can automatically slide to the middle of the anti-slip rail.

[0018] 3) In this technology, the bolt installation assembly can effectively ensure that the centering block is always in the middle position relative to the vehicle body, so that the rear cover positioning device and the automatic tightening gun are in the center position of the vehicle body, so that the rear cover is accurately positioned and the bolt installation gun can accurately tighten the screws.

[0019] 4) In this technology, the angle adjustment component can ensure that the mounting bracket can float at a certain angle during use, so that the entire device can better adapt to the vehicle body, thereby better positioning and installing the rear cover of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural diagram of the assembly fixture;

[0021] Figure 2 for Figure 1 A magnified structural diagram;

[0022] Figure 3 for Figure 1 The enlarged structure diagram at B;

[0023] Figure 4 Three-dimensional structure for bolt-mounted components Figure 1 ;

[0024] Figure 5 Three-dimensional structure for bolt-mounted components Figure 2 ;

[0025] Figure 6 A diagram showing the connection structure of the rear cover clamping and positioning assembly and the vehicle body positioning assembly on the mounting bracket;

[0026] Figure 7 This is a diagram of the internal structure of the angle adjustment component;

[0027] In the figure, 1-mounting bracket, 2-anti-slip slider, 3-anti-slip slide rail, 4-sliding seat, 5-limiting block, 6-reset member, 7-fixed block, 8-movable rod, 9-centering block, 10-sliding block, 11-connecting rod, 12-rotating rod, 13-adjusting rod, 14-floating adjustment component, 15-bolt installation gun, 16-fixed axis, 17-first clamping cylinder, 18-second clamping cylinder, 19-first clamping block, 20-second clamping block, 21-third clamping block, 22 - the fourth clamping block, 23 - positioning cylinder, 24 - the first positioning block, 25 - positioning frame, 26 - fixing sleeve, 27 - handle rod, 28 - push rod, 29 - guide rod, 30 - positioning plate, 31 - positioning end, 32 - second positioning block, 33 - upper connecting seat, 34 - lower connecting seat, 35 - angle adjustment block, 36 - first rotating shaft, 37 - second rotating shaft, 38 - balance spring, 39 - limit rod, 40 - spherical end, 41 - guide rail, 42 - guide block. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7 , the present invention provides a technical solution:

[0030] The automobile rear cover assembly fixture comprises a mounting bracket 1, an anti-slipping slider 2, an anti-slipping slide rail 3, a sliding seat 4, a limiting block 5, a resetting member 6, a rear cover clamping and positioning component, a vehicle body positioning component, a bolt mounting component and an angle adjustment component. The upper end of the mounting bracket 1 is fixedly arranged on the lower end of the angle adjustment component, the anti-slipping slider 2 is fixedly arranged on both sides of the lower end of the mounting bracket 1, the anti-slipping slide rail 3 is slidably arranged on the anti-slipping slider 2 and cooperates with the anti-slipping slider 2, the sliding seat 4 is fixedly arranged on the anti-slipping slide rail 3, both ends of the bolt mounting component are fixedly connected to the two sliding seats 4 respectively, the two sliding seats 4 are provided with a rear cover clamping and positioning component that cooperates with the automobile rear cover, and a vehicle body positioning component that cooperates with the automobile body, both sides of the sliding seat 4 are provided with limiting blocks 5 that cooperate with the two ends of the anti-slipping slide rail 3, one end of the resetting member 6 is fixedly connected to the limiting block 5, the other end of the resetting member 6 is fixedly connected to the anti-slipping slider 2, and the anti-slipping slide rails 3 on the two sliding seats 4 are arranged parallel to each other. The upper end of the angle adjustment assembly is connected to the rack in the workshop, and the upper end of the mounting bracket 1 is connected to the lower end of the angle adjustment assembly. Under the action of the angle adjustment assembly, the mounting bracket 1 can swing. The two ends of the lower side of the mounting bracket 1 are respectively connected to the sliding seat 4 through the anti-slip slider 2 and the anti-slip rail 3. The sliding seat 4 is used to install the rear cover clamping and positioning assembly, the body positioning assembly and the bolt installation assembly. The function of the rear cover clamping and positioning assembly is to accurately clamp the rear cover of the car, the function of the body positioning assembly is to accurately position with the body, and the function of the bolt installation assembly is to tighten the screws, so that the rear cover of the car can be fixed on the body. The limit block 5 has two functions, one is to prevent the anti-slip slider 2 from detaching from the two ends of the anti-slip rail 3; the other is to install the reset member 6, the reset member 6 is a reset spring in the prior art, and under the action of the reset spring, the anti-slip slider 2 can automatically slide to the middle of the anti-slip rail 3.

[0031] In some embodiments, the bolt installation assembly includes a fixed block 7, a movable rod 8, a centering block 9, a sliding block 10, a connecting rod 11, a rotating rod 12, an adjusting rod 13, a floating adjusting component 14 and a bolt installation gun 15. The two sliding seats 4 are fixedly provided with fixed blocks 7, the movable rod 8 is slidably provided on the two fixed blocks 7, the centering block 9 and the sliding block 10 are slidably provided on the movable rod 8, two sliding blocks 10 are provided between the two fixed blocks 7, the two sliding blocks 10 are respectively fixedly provided on the two ends of the connecting rod 11, the centering block 9 is fixedly provided on the middle part of the connecting rod 11, and the centering block 9 and the sliding block 10 do not rotate relative to the fixed block 7, the middle part of the rotating rod 12 is rotatably provided on the centering block 9, the two ends of the rotating rod 12 are respectively hinged to one end of the two adjusting rods 13, and the other ends of the two adjusting rods 13 are respectively hinged to the two fixed blocks 7, the two sliding blocks 10 are respectively fixedly provided with floating adjusting components 14, and the floating adjusting component 14 is provided with a bolt installation gun 15. A fixed shaft 16 is fixedly arranged on the middle of the centering block 9, and the middle of the rotating rod 12 is rotatably arranged on the fixed shaft 16. Among them, two fixed blocks 7 are fixed on the sliding seat 4 for installing the movable rod 8, two parallel movable rods 8 are arranged between the two fixed blocks 7, two sliding holes are arranged on the two fixed blocks 7, two ends of the movable rod 8 are arranged in the sliding holes of the two fixed blocks 7, and two ends of the movable rod 8 are arranged with limited protrusions. Under the action of the limited protrusions, the movable rod 8 will not slide off the fixed block 7. The movable rod 8 is used to install the centering block 9 and the sliding block 10. The sliding block 10 fixes the bolt installation gun 15 in the prior art through the floating adjustment component 14 in the prior art. The bolt installation gun 15 is used to tighten the screws, and the floating adjustment component 14 is used to float and adjust the position of the bolt installation gun 15. Under the action of the rotating rod 12 and the adjusting rod 13, the centering block 9 is always in the middle of the two fixed blocks 7, and the centering block 9 is connected to the sliding block 10 through the connecting rod 11, so that the bolt installation gun 15 is always matched with the bolt hole on the rear cover of the car. The fixed shaft 16 is used to install the rotating rod 12. With the axis of the fixed shaft 16 as the center line, the two ends of the rotating rod 12 are symmetrically arranged, and the two adjusting rods 13 are centrally symmetrically arranged.

[0032] In some embodiments, the rear cover clamping and positioning assembly includes a first clamping cylinder 17, a second clamping cylinder 18, a first clamping block 19, a second clamping block 20, a third clamping block 21 and a fourth clamping block 22. The first clamping cylinder 17 and the second clamping cylinder 18 are both arranged on both sides of the same sliding seat 4, the first clamping block 19 and the second clamping block 20 are both fixedly arranged on the output part of the first clamping cylinder 17, the third clamping block 21 and the fourth clamping block 22 are both fixedly arranged on the output part of the second clamping cylinder 18, the first clamping block 19 cooperates with the second clamping block 20, and the third clamping block 21 cooperates with the fourth clamping block 22. Among them, the first clamping cylinder 17 and the second clamping cylinder 18 are both flip cylinders in the prior art, and the first clamping cylinder 17 and the second clamping cylinder 18 are arranged on the two sliding seats 4, so the rear cover of the car is precisely clamped by the two first clamping cylinders 17 and the two second clamping cylinders 18, and the first clamping cylinder 17 is provided with a first clamping block 19 and a second clamping block 20, and the second clamping cylinder 18 is provided with a third clamping block 21 and a fourth clamping block 22, so in the entire rear cover clamping and positioning assembly, eight clamping blocks are used for precise clamping, which not only has an accurate clamping position, but also is very stable and will not fall off during transportation.

[0033] In some embodiments, the vehicle body positioning assembly includes a positioning cylinder 23, a first positioning block 24 and a manual positioning component, the fixing portion of the positioning cylinder 23 is fixedly arranged on one side of the sliding seat 4, the first positioning block 24 is fixedly arranged on the output portion of the positioning cylinder 23, and the manual positioning portion is fixedly arranged on the other side of the sliding seat 4. The positioning cylinder 23 is a flip cylinder in the prior art. During the installation process, the worker manually operates the manual positioning component to position on the vehicle body, and then the positioning cylinder 23 drives the first positioning block 24 to position on the vehicle body. After the positioning is completed, the screws can be directly tightened. After the installation is completed, the worker manually loosens the manual positioning component, and then controls the first clamping cylinder 17 and the second clamping cylinder 18 to loosen the rear cover, and controls the positioning cylinder 23 to loosen the vehicle body, so that the assembly fixture can be moved to clamp the rear cover of the next car.

[0034] In some embodiments, the manual positioning component includes a positioning frame 25, a fixing sleeve 26, a handle rod 27, a pushing rod 28, a guide rod 29, a positioning plate 30, a positioning terminal 31 and a second positioning block 32. The upper end of the positioning frame 25 is fixedly connected to the sliding seat 4, the fixing sleeve 26 is fixedly set on the middle part of the positioning frame 25, a guide rod 29 is slidably set in the fixing sleeve 26, one end of the guide rod 29 is fixedly connected to the positioning plate 30, a positioning terminal 31 and a second positioning block 32 are fixedly set on the positioning plate 30, the other end of the guide rod 29 is hinged to one end of the pushing rod 28, the other end of the pushing rod 28 is hinged to the middle part of the handle rod 27, and the lower end of the handle rod 27 is hinged to the lower end of the positioning frame 25. The worker manually holds the upper end of the handle bar 27 and moves it. The middle part of the handle bar 27 drives the guide bar 29 to move in a directional manner in the fixed sleeve 26 through the push rod 28. The guide bar 29 pushes the positioning plate 30 to move. The positioning end 31 and the second positioning block 32 on the positioning plate 30 are positioned or loosened with the automobile body.

[0035] In some embodiments, the angle adjustment assembly includes an upper connecting seat 33, a lower connecting seat 34, an angle adjustment block 35, a first rotating shaft 36 and a second rotating shaft 37. The first rotating shaft 36 and the second rotating shaft 37 are rotatably arranged on the angle adjustment block 35. The first rotating shaft 36 and the second rotating shaft 37 are arranged perpendicular to each other and do not intersect. Both ends of the first rotating shaft 36 are fixedly arranged on the upper connecting seat 33, and both ends of the second rotating shaft 37 are fixedly arranged on the lower connecting seat 34. The lower connecting seat 34 is connected to the mounting bracket 1. Four balancing springs 38 are arranged between the upper connecting seat 33 and the lower connecting seat 34. The balancing springs 38 are arranged between the ends of the first rotating shaft 36 and the ends of the second rotating shaft 37. Four limiting rods 39 cooperating with the balancing springs 38 are arranged on the lower connecting seat 34, and a spherical end 40 cooperating with the upper connecting seat 33 is arranged on the ends of the limiting rods 39. The upper connecting seat 33 is connected to the driving of the workshop, the upper connecting seat 33 is connected to both ends of the first rotating shaft 36, the lower connecting seat 34 is connected to both ends of the second rotating shaft 37, and the middle part 36 of the first rotating shaft and the middle part of the second rotating shaft 37 are both rotatably arranged on the angle adjustment block 35. The first rotating shaft 36 is arranged in parallel with the anti-slip rail 3. Four balancing springs 38 are arranged so that the upper connecting seat 33 and the lower connecting seat 34 can be reset after rotating a certain angle, and the role of the limit rod 39 and the spherical end 40 is to control the rotation angle between the upper connecting seat 33 and the lower connecting seat 34 within a certain range, and there will be no excessive rotation.

[0036] In some embodiments, a guide rail 41 is fixedly disposed on the lower connecting seat 34, a guide block 42 cooperating with the guide rail 41 is disposed on the guide rail 41, and the guide block 42 is fixedly connected to the mounting bracket 1. The guide rail 41 and the anti-slip rail 3 are arranged parallel to each other, and under the action of the guide rail 41 and the guide block 42, a certain distance between the lower connecting seat 34 and the mounting bracket 1 can be slidably adjusted.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "one end", "top", "middle", "the other end", "coaxial", "one side", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "setting", "installation", "connection", "fixation", "hinge" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0039] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. Automobile rear cover assembly fixture, characterized by: The invention comprises a mounting bracket (1), an anti-slipping slider (2), an anti-slipping slide rail (3), a sliding seat (4), a limiting block (5), a reset member (6), a rear cover clamping and positioning assembly, a vehicle body positioning assembly, a bolt mounting assembly and an angle adjustment assembly. The upper end of the mounting bracket (1) is fixedly arranged on the lower end of the angle adjustment assembly. The anti-slipping slider (2) is fixedly arranged on both sides of the lower end of the mounting bracket (1). The anti-slipping slide rail (3) is slidably arranged on the anti-slipping slider (2) and cooperates with the anti-slipping slider (2). The sliding seat (4) is fixedly arranged on the anti-slipping slide rail (3). The two ends of the bolt mounting assembly are respectively fixedly connected to the two sliding seats (4); the two sliding seats (4) are both provided with the rear cover clamping and positioning assembly matched with the rear cover of the automobile, and the body positioning assembly matched with the body of the automobile; the two sides of the sliding seat (4) are both provided with the limit blocks (5) matched with the two ends of the anti-slip slide rail (3); one end of the reset member (6) is fixedly connected to the limit block (5); the other end of the reset member (6) is fixedly connected to the anti-slip slide block (2); and the anti-slip slide rails (3) on the two sliding seats (4) are arranged parallel to each other.

2. The automobile rear cover assembly fixture according to claim 1, characterized in that: The bolt installation assembly comprises a fixed block (7), a movable rod (8), a centering block (9), a sliding block (10), a connecting rod (11), a rotating rod (12), an adjusting rod (13), a floating adjusting component (14) and a bolt installation gun (15), wherein the fixed block (7) is fixedly arranged on the two sliding seats (4), the movable rod (8) is slidably arranged on the two fixed blocks (7), the centering block (9) and the sliding block (10) are slidably arranged on the movable rod (8), two sliding blocks (10) are arranged between the two fixed blocks (7), and the two sliding blocks (10) are respectively fixedly arranged on the connecting rod ( 11), the centering block (9) is fixedly arranged on the middle part of the connecting rod (11), and the centering block (9) and the sliding block (10) do not rotate relative to the fixed block (7), the middle part of the rotating rod (12) is rotatably arranged on the centering block (9), the two ends of the rotating rod (12) are respectively hinged to one end of the two adjusting rods (13), the other ends of the two adjusting rods (13) are respectively hinged to the two fixed blocks (7), the two sliding blocks (10) are respectively fixedly arranged with the floating adjustment components (14), and the floating adjustment components (14) are provided with the bolt installation gun (15).

3. The automobile rear cover assembly fixture according to claim 2, characterized in that: A fixed shaft (16) is fixedly arranged on the middle part of the centering block (9), and a middle part of the rotating rod (12) is rotatably arranged on the fixed shaft (16).

4. The automobile rear cover assembly fixture according to any one of claims 1 to 3, characterized in that: The rear cover clamping and positioning assembly comprises a first clamping cylinder (17), a second clamping cylinder (18), a first clamping block (19), a second clamping block (20), a third clamping block (21) and a fourth clamping block (22); the first clamping cylinder (17) and the second clamping cylinder (18) are both arranged on both sides of the same sliding seat (4); the first clamping block (19) and the second clamping block (20) are both fixedly arranged on the output portion of the first clamping cylinder (17); the third clamping block (21) and the fourth clamping block (22) are both fixedly arranged on the output portion of the second clamping cylinder (18); the first clamping block (19) cooperates with the second clamping block (20); and the third clamping block (21) cooperates with the fourth clamping block (22).

5. The automobile rear cover assembly fixture according to any one of claims 1 to 3, characterized in that: The vehicle body positioning assembly comprises a positioning cylinder (23), a first positioning block (24) and a manual positioning component, wherein the fixing portion of the positioning cylinder (23) is fixedly arranged on one side of the sliding seat (4), the first positioning block (24) is fixedly arranged on the output portion of the positioning cylinder (23), and the manual positioning portion is fixedly arranged on the other side of the sliding seat (4).

6. The automobile rear cover assembly fixture according to claim 5, characterized in that: The manual positioning component comprises a positioning frame (25), a fixing sleeve (26), a handle rod (27), a pushing rod (28), a guide rod (29), a positioning plate (30), a positioning terminal (31) and a second positioning block (32). The upper end of the positioning frame (25) is fixedly connected to the sliding seat (4). The fixing sleeve (26) is fixedly arranged on the middle part of the positioning frame (25). The guide rod (29) is slidably arranged in the fixing sleeve (26). One end of the guide rod (29) is fixedly connected to the positioning plate (30). The positioning terminal (31) and the second positioning block (32) are fixedly arranged on the positioning plate (30). The other end of the guide rod (29) is hinged to one end of the pushing rod (28). The other end of the pushing rod (28) is hinged to the middle part of the handle rod (27). The lower end of the handle rod (27) is hinged to the lower end of the positioning frame (25).

7. The automobile rear cover assembly fixture according to any one of claims 1 to 3, characterized in that: The angle adjustment assembly comprises an upper connecting seat (33), a lower connecting seat (34), an angle adjustment block (35), a first rotating shaft (36) and a second rotating shaft (37); the first rotating shaft (36) and the second rotating shaft (37) are rotatably arranged on the angle adjustment block (35); the first rotating shaft (36) and the second rotating shaft (37) are arranged perpendicular to each other and do not intersect; both ends of the first rotating shaft (36) are fixedly arranged on the upper connecting seat (33); both ends of the second rotating shaft (37) are fixedly arranged on the lower connecting seat (34); and the lower connecting seat (34) is connected to the mounting bracket (1).

8. The automobile rear cover assembly fixture according to claim 7, characterized in that: Four balance springs (38) are arranged between the upper connecting seat (33) and the lower connecting seat (34), and the balance springs (38) are arranged between the end of the first rotating shaft (36) and the end of the second rotating shaft (37).

9. The automobile rear cover assembly fixture according to claim 8, characterized in that: The lower connecting seat (34) is provided with four limiting rods (39) matched with the balance spring (38), and the ends of the limiting rods (39) are provided with spherical ends (40) matched with the upper connecting seat (33).

10. The automobile rear cover assembly fixture according to claim 7, characterized in that: A guide rail (41) is fixedly arranged on the lower connecting seat (34), a guide block (42) matching with the guide rail (41) is arranged on the guide rail (41), and the guide block (42) is fixedly connected to the mounting bracket (1).

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