A welding fixture shared by multiple vehicle models

Abstract

The utility model relates to a welding fixture shared by multiple vehicle models, including: a bracket, a first support component, a second support component, a first lateral moving component, a first fixed component, a second lateral moving component, and a second fixed component; the first support component is used to support the vehicle body, the first lateral moving component and the second lateral moving component are respectively used to drive the first fixed component and the second fixed component to move in the first direction, and the second support component, the first fixed component and the second fixed component are respectively used to support and fix the vehicle body. The first lateral moving unit and the second lateral moving unit are provided to respectively drive the first fixed component and the second fixed component to move, and the positions of the first fixed component and the second fixed component can be adjusted, so that the welding fixture can be adapted to vehicle bodies of different lengths and meet the requirements for the common use of fixtures for vehicle models of various sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile production, and more specifically to a welding fixture shared by multiple vehicle models. Background Art

[0002] Welding fixtures are used to fix the car body and parts during welding, thereby ensuring the welding accuracy of the parts. In order to reduce production costs, shared welding fixtures are generally used. With the continuous development of new energy vehicles and the increase in the number of cars in use, traditional models need to undergo technological changes, and the workshop production line needs to be transformed to meet the manufacturing requirements of more different levels of models at the same time. The existing welding fixtures are generally fixed in a simple clamping manner with a low degree of adjustability. Generally, they can only meet the needs of two or three models with similar body sizes, but cannot meet the needs of models with large differences in body length or a larger number. If more models are to be shared, more fixed components need to be added to the welding fixture, which will result in the welding fixture being too large in size, with a large load and a large weight, which is not conducive to the movement of the fixture and has a high cost. In addition, the fixed positions of car bodies of different sizes will interfere with each other, and there are situations where components of fixed components cannot be installed. Utility Model Content

[0003] In order to overcome the defects of the above-mentioned prior art that the welding fixture has a low degree of adjustability and cannot simultaneously meet the common needs of a large number of vehicle models with different sizes, the utility model provides a welding fixture shared by multiple vehicle models to meet the common needs of vehicle models of multiple sizes.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a welding fixture shared by multiple vehicle models, including: a bracket, a first support assembly and a second support assembly respectively connected to the bracket, a first lateral movable assembly respectively installed on both sides of one end of the bracket, a first fixed assembly installed on the first lateral movable assembly, a second lateral movable assembly respectively installed on both sides of the other end of the bracket, and a second fixed assembly installed on the second lateral movable assembly; the first support assembly is used to support the vehicle body, the first lateral movable assembly and the second lateral movable assembly are respectively used to drive the first fixed assembly and the second fixed assembly to move in the first direction, and the second support assembly, the first fixed assembly and the second fixed assembly are respectively used to support and fix the vehicle body. Furthermore, positioning mechanisms are respectively installed at the front and rear ends of the bracket, and a vertical reference member and a coding ruler are also provided on the bracket. The accuracy of the movement and positioning of the bracket is ensured.

[0005] The first support assembly, the second support assembly, the first fixed assembly and the second fixed assembly all play the role of supporting the vehicle body. The second support assembly, the first fixed assembly and the second fixed assembly also play the role of fixing the vehicle body. Specifically, a manipulator or a clamping claw cylinder can be used. The first fixed assembly and the second fixed assembly are at least provided with two groups, which are respectively provided on both sides of the two ends of the bracket to form a rectangular arrangement to ensure the stability of support and fixation. At the same time, the first fixed assembly and the second fixed assembly are respectively installed on the first lateral moving assembly and the second lateral moving assembly, so that the first fixed assembly and the second fixed assembly can be moved in the first direction, and then can adapt to the fixation of vehicles of different lengths and sizes, meet the welding fixture sharing requirements of various vehicle models, reduce the number of fixture switching, and reduce the cost of raw tea. The first support assembly and the second support assembly cannot move to ensure the basic support function, and the movement of the first fixed assembly and the second fixed assembly ensures the vehicle adaptation function. The first direction is the same as the forward direction of the bracket when working, corresponding to the length direction of the vehicle body. The first lateral moving assembly and the second lateral moving assembly can be moved by a cylinder or a linear motor.

[0006] Preferably, it also includes a first longitudinal moving component and a second longitudinal moving component respectively installed on the first lateral moving component and the second lateral moving component, the first fixed component and the second fixed component are respectively installed on the first longitudinal moving component and the second longitudinal moving component, and the first longitudinal moving component and the second longitudinal moving component are respectively used to drive the first fixed component and the second fixed component to move in the second direction.

[0007] The first longitudinal moving assembly and the second longitudinal moving assembly are arranged to increase the adjustment range of the first fixed assembly and the second fixed assembly, so as to adapt to more vehicle models, and the second direction is perpendicular to the first direction on the horizontal plane. The first longitudinal moving assembly and the second longitudinal moving assembly can be moved by cylinders or linear motors.

[0008] Preferably, it also includes a first vertical movable component and a second vertical movable component respectively installed on the first longitudinal movable component and the second longitudinal movable component, the first fixed component and the second fixed component are respectively installed on the first vertical movable component and the second vertical movable component, and the first vertical movable component and the second vertical movable component are respectively used to drive the first fixed component and the second fixed component to move in a third direction.

[0009] The third direction is the vertical direction, and the first vertical assembly and the second vertical assembly are provided to adjust the height of the first fixed assembly and the second fixed assembly. The first vertical assembly and the second vertical assembly can be moved by a cylinder or a linear motor.

[0010] Preferably, the first supporting assembly comprises a third vertical movable assembly connected to the bracket and a supporting member installed on the third vertical movable assembly, wherein the supporting member is used to support the vehicle body.

[0011] The third vertical moving assembly drives the supporting member to move up and down. The supporting member is used to support the vehicle body. The supporting member can be a cross bar or a cross plate.

[0012] Preferably, the second supporting assembly includes a fourth vertical movable assembly connected to the bracket, a first clamping member installed on the fourth vertical movable assembly, the first fixing assembly includes a second clamping member installed on the first vertical movable assembly, and the second fixing assembly includes a third clamping member installed on the second vertical movable assembly; the first clamping member, the second clamping member and the third clamping member are respectively used to clamp and fix the vehicle body.

[0013] The fourth vertical moving assembly drives the first clamping member to move up and down. The second clamping member can be moved to any point in the space within the adjustment range under the action of the first lateral moving assembly, the first longitudinal moving assembly and the first vertical moving assembly. The movable range of the third clamping member refers to the second clamping member. Furthermore, the first clamping member, the second clamping member and the third clamping member all use a pin-out cylinder. The pin-out cylinder is a standard device that can simultaneously realize the positioning and clamping of the vehicle body.

[0014] Preferably, visual identification components are installed on the first clamping member, the second clamping member and the third clamping member, and the visual identification components are used to display the positions of the first clamping member, the second clamping member and the third clamping member, respectively.

[0015] The visual identification member is provided to confirm the positions of the first clamping member, the second clamping member and the third clamping member through an external visual identification system to ensure the clamping accuracy. Furthermore, the end of the visual identification member is spherical, which is convenient for confirming the three-dimensional coordinates.

[0016] Preferably, the first lateral movement component includes a guide rail assembly and a guide rail lock connected to the guide rail assembly, and the second lateral movement component, the first longitudinal movement component, the second longitudinal movement component, the first vertical movement component, the second vertical movement component, the third vertical movement component and the fourth vertical movement component all have the same structure as the first lateral movement component.

[0017] A guide rail assembly is used to ensure smooth movement, and a guide rail lock is used to ensure that the guide rail assembly can be stably locked. The guide rail lock can be fixedly connected to the slider in the guide rail assembly, and can also be fixedly connected to the device connected to the slider, thereby directly locking the device and indirectly locking the slider.

[0018] Preferably, it further comprises a first bidirectional positioning pin connected to the second clamping member and the third clamping member respectively, wherein the first bidirectional positioning pin is used for connecting to an external manipulator.

[0019] Both the second clamp and the third clamp can adjust their spatial positions within a set range. The traditional adjustment method generally uses the drive in the xyz three-axis direction, and the xyz three-axis directions are adjusted in sequence. The adjustment speed is slow. A first two-way positioning pin is set. When the external manipulator grabs the first two-way positioning pin, it directly moves the second clamp or the third clamp in any direction of the air conditioner according to the three-dimensional coordinates, which greatly shortens the movement route of the second clamp or the third clamp and improves the movement efficiency. Specifically, the manipulator grabs the first two-way positioning pin, the guide rail lock is unlocked, the manipulator moves, the guide rail lock is locked, and the movement is completed. Using the manipulator to move can also ensure the movement accuracy of the second clamp or the third clamp. Combined with the above-mentioned visual identification component, re-inspection after movement can be achieved to fully ensure the movement accuracy.

[0020] Preferably, it further comprises a second bidirectional positioning pin connected to the bracket, wherein the second bidirectional positioning pin is used to connect to an external clamping device.

[0021] The second bidirectional positioning pin is fixedly connected to the bracket and is used to connect to an external clamping device to fix the bracket to prevent the bracket from shaking during the welding process.

[0022] Preferably, it also includes an air pipe connector and a power connector connected to the bracket, a processing unit connected to the power connector, and a valve unit connected to the air pipe, and the processing unit is signal-connected to the valve unit.

[0023] The air pipe connector and the power supply connector are used to quickly connect the external air source and the power supply. The valve unit is respectively connected to the guide rail lock, the first clamping member, the second clamping member and the third clamping member through the air pipe. The power supply connector is connected to the processing unit signal. The processing unit controls the opening and closing of the valve unit. Further, the processing unit adopts a plc. Further, the valve unit adopts a solenoid valve.

[0024] Compared with the prior art, the beneficial effects of the utility model are: a first lateral moving unit and a second lateral moving unit are provided to respectively drive the first fixed assembly and the second fixed assembly to move, thereby adjusting the positions of the first fixed assembly and the second fixed assembly, so that the welding fixture can be adapted to vehicle bodies of different lengths and meet the needs of sharing fixtures for vehicle models of various sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a welding fixture shared by multiple vehicle models of the utility model;

[0026] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0027] Figure 3 yes Figure 1 A magnified schematic diagram of part B;

[0028] Figure 4 yes Figure 1 An enlarged schematic diagram of part C of FIG.

[0029] Figure 5 yes Figure 1 An enlarged schematic diagram of the D portion;

[0030] Figure 6 This is a schematic diagram of the installation structure of a processing unit and a valve unit of a welding fixture shared by multiple vehicle models of the utility model;

[0031] Figure 7 The utility model is a structural schematic diagram of a first bidirectional locating pin and a second bidirectional locating pin of a welding fixture shared by multiple vehicle models.

[0032] In the figure: 1, bracket; 2, first supporting assembly; 201, third vertical moving assembly; 202, supporting member; 3, second supporting assembly; 301, fourth vertical moving assembly; 302, first clamping member; 4, first transverse moving assembly; 5, first fixing assembly; 501, second clamping member; 6, second transverse moving assembly; 7, second fixing assembly; 701, third clamping member; 8, first longitudinal moving assembly; 9, second longitudinal moving assembly; 10, first vertical moving assembly; 11, second vertical moving assembly; 12, visual identification member; 13, guide rail lock; 14, first two-way locating pin; 15, second two-way locating pin; 16, air pipe connector; 17, power connector; 18, processing unit; 19, valve unit; 20, positioning member. DETAILED DESCRIPTION

[0033] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0036] Example 1

[0037] like Figure 1 As shown, a welding fixture shared by multiple vehicle models includes: a bracket 1, a first support assembly 2 and a second support assembly 3 respectively connected to the bracket 1, a first lateral moving assembly 4 respectively installed on both sides of one end of the bracket 1, a first fixed assembly 5 installed on the first lateral moving assembly 4, a second lateral moving assembly 6 respectively installed on both sides of the other end of the bracket 1, and a second fixed assembly 7 installed on the second lateral moving assembly 6; the first support assembly 2 is used to support the vehicle body, the first lateral moving assembly 4 and the second lateral moving assembly 6 are respectively used to drive the first fixed assembly 5 and the second fixed assembly 7 to move in the first direction, and the second support assembly 3, the first fixed assembly 5 and the second fixed assembly 7 are respectively used to support and fix the vehicle body. Furthermore, positioning mechanisms are respectively installed at the front and rear ends of the bracket 1, and a vertical reference member and a coding ruler are also provided on the bracket 1. The accuracy of the movement and positioning of the bracket 1 is ensured.

[0038] The first support assembly 2, the second support assembly 3, the first fixed assembly 5 and the second fixed assembly 7 all play the role of supporting the vehicle body. The second support assembly 3, the first fixed assembly 5 and the second fixed assembly 7 also play the role of fixing the vehicle body. Specifically, a manipulator or a clamping claw cylinder can be used. The first fixed assembly 5 and the second fixed assembly 7 are at least set in two groups, which are respectively set on both sides of the two ends of the bracket 1 to form a rectangular arrangement to ensure the stability of support and fixation. At the same time, the first fixed assembly 5 and the second fixed assembly 7 are respectively installed on the first lateral moving assembly 4 and the second lateral moving assembly 6, so that the first fixed assembly 5 and the second fixed assembly 7 can be moved in the first direction, and then can adapt to the fixation of vehicles of different lengths and sizes, meet the welding fixture sharing requirements of various vehicle models, reduce the number of fixture switching, and reduce the cost of raw tea. The first support assembly 2 and the second support assembly 3 cannot move to ensure the basic support function, and the first fixed assembly 5 and the second fixed assembly 7 move to ensure the vehicle adaptation function. The first direction is the same as the forward direction of the bracket 1 when it is working, corresponding to the length direction of the vehicle body. The first lateral moving assembly 4 and the second lateral moving assembly 6 can be moved by a cylinder or a linear motor.

[0039] The beneficial effects of this embodiment are as follows: a first lateral moving unit and a second lateral moving unit are provided to respectively drive the first fixing component 5 and the second fixing component 7 to move, thereby adjusting the positions of the first fixing component 5 and the second fixing component 7, so that the welding fixture can be adapted to vehicle bodies of different lengths and meet the requirements for sharing fixtures for vehicle models of various sizes.

[0040] Example 2

[0041] like Figure 1-7 As shown, based on Example 1, the difference from Example 1 is that:

[0042] It also includes a first longitudinal moving assembly 8 and a second longitudinal moving assembly 9 respectively mounted on the first lateral moving assembly 4 and the second lateral moving assembly 6, a first fixed assembly 5 and a second fixed assembly 7 respectively mounted on the first longitudinal moving assembly 8 and the second longitudinal moving assembly 9, and the first longitudinal moving assembly 8 and the second longitudinal moving assembly 9 are respectively used to drive the first fixed assembly 5 and the second fixed assembly 7 to move in the second direction. It also includes a first vertical moving assembly 10 and a second vertical moving assembly 11 respectively mounted on the first longitudinal moving assembly 8 and the second longitudinal moving assembly 9, a first fixed assembly 5 and a second fixed assembly 7 respectively mounted on the first vertical moving assembly 10 and the second vertical moving assembly 11, and the first vertical moving assembly 10 and the second vertical moving assembly 11 are respectively used to drive the first fixed assembly 5 and the second fixed assembly 7 to move in the third direction. The first supporting assembly 2 includes a third vertical moving assembly 201 connected to the bracket 1 and a supporting member 202 mounted on the third vertical moving assembly 201, and the supporting member 202 is used to support the vehicle body. The second supporting assembly 3 includes a fourth vertical movable assembly 301 connected to the bracket 1, and a first clamping member 302 installed on the fourth vertical movable assembly 301. The first fixing assembly 5 includes a second clamping member 501 installed on the first vertical movable assembly 10. The second fixing assembly 7 includes a third clamping member 701 installed on the second vertical movable assembly 11. The first clamping member 302, the second clamping member 501 and the third clamping member 701 are respectively used to clamp and fix the vehicle body.

[0043] The first longitudinal moving assembly 8 and the second longitudinal moving assembly 9 are arranged to increase the adjustment range of the first fixed assembly 5 and the second fixed assembly 7, so as to adapt to more vehicle models. The second direction is perpendicular to the first direction on the horizontal plane. The first longitudinal moving assembly 8 and the second longitudinal moving assembly 9 can be moved by a cylinder or a linear motor. The third direction is the vertical direction. The first vertical assembly and the second vertical assembly are arranged to adjust the height of the first fixed assembly 5 and the second fixed assembly 7. The first vertical assembly and the second vertical assembly can be moved by a cylinder or a linear motor. The third vertical moving assembly 201 drives the support member 202 to rise and fall. The support member 202 is used to support the vehicle body. The support member 202 can be a cross bar or a cross plate. The fourth vertical moving assembly 301 drives the first clamping member 302 to rise and fall. The second clamping member 501 can be moved to any point in the space within the adjustment range under the action of the first lateral moving assembly 4, the first longitudinal moving assembly 8 and the first vertical moving assembly 10. The movable range of the third clamping member 701 refers to the second clamping member 501. Furthermore, the first clamping member 302, the second clamping member 501 and the third clamping member 701 all use a pinning cylinder. The pinning cylinder is a standard device that can simultaneously realize the positioning and clamping of the vehicle body.

[0044] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1.

[0045] Example 3

[0046] like Figure 1-7 As shown, based on Example 1 or Example 2, Example 1 or Example 2 is further limited, and the difference is that:

[0047] The first clamping member 302, the second clamping member 501 and the third clamping member 701 are all equipped with a visual identification member 12, and the visual identification member 12 is used to display the location of the first clamping member 302, the second clamping member 501 and the third clamping member 701 respectively. The first lateral movement component 4 includes a guide rail component and a guide rail lock 13 connected to the guide rail component, and the second lateral movement component 6, the first longitudinal movement component 8, the second longitudinal movement component 9, the first vertical movement component 10, the second vertical movement component 11, the third vertical movement component 201 and the fourth vertical movement component 301 are all the same structure as the first lateral movement component 4. It also includes a first bidirectional positioning pin 14 connected to the second clamping member 501 and the third clamping member 701 respectively, and the first bidirectional positioning pin 14 is used to connect an external manipulator. It also includes a second bidirectional positioning pin 15 connected to the bracket 1, and the second bidirectional positioning pin 15 is used to connect to an external clamping device. It also includes an air pipe connector 16 and a power connector 17 connected to the bracket 1 , a processing unit 18 connected to the power connector 17 , and a valve unit 19 connected to the air pipe. The processing unit 18 is signal-connected to the valve unit 19 .

[0048] A visual identification member 12 is provided to confirm the respective positions of the first clamping member 302, the second clamping member 501 and the third clamping member 701 through an external visual identification system to ensure the clamping accuracy. Furthermore, the end of the visual identification member 12 is spherical, which is convenient for confirming the three-dimensional coordinates. A guide rail assembly is used to ensure the smoothness of movement, and a guide rail lock 13 is used to ensure that the guide rail assembly can be stably locked. The guide rail lock 13 can be fixedly connected to the slider in the guide rail assembly, or it can be fixedly connected to the device connected to the slider, thereby directly locking the device and indirectly locking the slider. The second clamping member 501 and the third clamping member 701 can both adjust the spatial position within the set range. The traditional adjustment method generally adopts the drive in the xyz three-axis direction, and the xyz three-axis directions are adjusted in sequence, and the adjustment speed is slow. The first bidirectional positioning pin 14 is set. When the external manipulator grabs the first bidirectional positioning pin 14, the second clamping member 501 or the third clamping member 701 is directly moved in any direction of the air conditioner according to the three-dimensional coordinates, which greatly shortens the moving route of the second clamping member 501 or the third clamping member 701 and improves the moving efficiency. Specifically, the manipulator grabs the first bidirectional positioning pin 14, the guide rail lock 13 is unlocked, the manipulator moves, the guide rail lock 13 is locked, and the movement is completed. Using the manipulator to move can also ensure the moving accuracy of the second clamping member 501 or the third clamping member 701, and then with the above-mentioned visual identification member 12, re-inspection after movement can be achieved, and the moving accuracy is fully guaranteed. The second bidirectional positioning pin 15 is fixedly connected to the bracket 1, which is used to connect with the external clamping device and then fix the bracket 1 to prevent the bracket 1 from shaking during the welding process. The air pipe connector 16 and the power supply connector 17 are used to quickly connect the external air source and power supply. The valve unit 19 is respectively connected to the guide rail lock 13, the first clamping member 302, the second clamping member 501 and the third clamping member 701 through the air pipe. The power supply connector 17 is connected to the processing unit 18 for signal connection. The processing unit 18 controls the opening and closing of the valve unit. Further, the processing unit 18 adopts a plc. Further, the valve unit 19 adopts a solenoid valve.

[0049] like Figure 1-5 As shown, further, the first transverse moving component 4, the second transverse moving component 6, the first longitudinal moving component 8, the second longitudinal moving component 9, the first vertical moving component 10, the second vertical moving component 11, the third vertical moving component 201 and the fourth vertical moving component 301 are all equipped with positioning components 20, and the positioning components 20 are used to display the current moving position of each moving component. When the visual identification component 12 fails in position recognition, an external device is used to find the position of each positioning component 20 respectively, and then confirm the specific positions of the support component 202, the first clamping component 302, the second clamping component 501 and the third clamping component 701.

[0050] The rest of the working principle and working process of this embodiment are consistent with those of Embodiment 1 or Embodiment 2.

[0051] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A welding fixture shared by multiple vehicle models, characterized in that: include: A bracket (1), a first supporting assembly (2) and a second supporting assembly (3) respectively connected to the bracket (1), a first transverse moving assembly (4) respectively mounted on both sides of one end of the bracket (1), a first fixing assembly (5) mounted on the first transverse moving assembly (4), a second transverse moving assembly (6) respectively mounted on both sides of the other end of the bracket (1), and a second fixing assembly (7) mounted on the second transverse moving assembly (6); The first supporting assembly (2) is used to support the vehicle body; the first lateral moving assembly (4) and the second lateral moving assembly (6) are respectively used to drive the first fixing assembly (5) and the second fixing assembly (7) to move in a first direction; the second supporting assembly (3), the first fixing assembly (5) and the second fixing assembly (7) are respectively used to support and fix the vehicle body.

2. A welding fixture for multiple vehicle models according to claim 1, characterized in that: The invention also comprises a first longitudinal moving assembly (8) and a second longitudinal moving assembly (9) respectively mounted on the first transverse moving assembly (4) and the second transverse moving assembly (6); the first fixed assembly (5) and the second fixed assembly (7) are respectively mounted on the first longitudinal moving assembly (8) and the second longitudinal moving assembly (9); the first longitudinal moving assembly (8) and the second longitudinal moving assembly (9) are respectively used to drive the first fixed assembly (5) and the second fixed assembly (7) to move in the second direction.

3. A welding fixture for multiple vehicle models according to claim 2, characterized in that: The invention also comprises a first vertical moving assembly (10) and a second vertical moving assembly (11) respectively mounted on the first longitudinal moving assembly (8) and the second longitudinal moving assembly (9); the first fixed assembly (5) and the second fixed assembly (7) are respectively mounted on the first vertical moving assembly (10) and the second vertical moving assembly (11); the first vertical moving assembly (10) and the second vertical moving assembly (11) are respectively used to drive the first fixed assembly (5) and the second fixed assembly (7) to move in a third direction.

4. The welding fixture for multiple vehicle models according to claim 3 is characterized in that: The first support assembly (2) comprises a third vertical movable assembly (201) connected to the bracket (1), and a support member (202) mounted on the third vertical movable assembly (201), wherein the support member (202) is used to support a vehicle body.

5. The welding fixture for multiple vehicle models according to claim 4 is characterized in that: The second supporting assembly (3) comprises a fourth vertical movable assembly (301) connected to the bracket (1), and a first clamping member (302) mounted on the fourth vertical movable assembly (301); the first fixing assembly (5) comprises a second clamping member (501) mounted on the first vertical movable assembly (10); and the second fixing assembly (7) comprises a third clamping member (701) mounted on the second vertical movable assembly (11); the first clamping member (302), the second clamping member (501) and the third clamping member (701) are respectively used for clamping and fixing a vehicle body.

6. The welding fixture for multiple vehicle types according to claim 5 is characterized in that: The first clamping member (302), the second clamping member (501) and the third clamping member (701) are each mounted with a visual identification member (12), and the visual identification member (12) is used to display the positions of the first clamping member (302), the second clamping member (501) and the third clamping member (701), respectively.

7. The welding fixture for multiple vehicle types according to claim 5 is characterized in that: The first transverse moving assembly (4) comprises a guide rail assembly and a guide rail lock (13) connected to the guide rail assembly; the second transverse moving assembly (6), the first longitudinal moving assembly (8), the second longitudinal moving assembly (9), the first vertical moving assembly (10), the second vertical moving assembly (11), the third vertical moving assembly (201) and the fourth vertical moving assembly (301) all have the same structure as the first transverse moving assembly (4).

8. The welding fixture for multiple vehicle types according to claim 7 is characterized in that: It also includes a first bidirectional positioning pin (14) connected to the second clamping member (501) and the third clamping member (701) respectively, and the first bidirectional positioning pin (14) is used to connect to an external manipulator.

9. The welding fixture for multiple vehicle types according to claim 7 is characterized in that: It also comprises a second bidirectional positioning pin (15) connected to the bracket (1), wherein the second bidirectional positioning pin (15) is used to connect to an external clamping device.

10. The welding fixture for multiple vehicle types according to claim 7, characterized in that: It also includes an air pipe connector (16) and a power connector (17) connected to the bracket (1), a processing unit (18) connected to the power connector (17), and a valve unit (19) connected to the air pipe, wherein the processing unit (18) is signal-connected to the valve unit (19).

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