A body welding fixture

Abstract

The utility model discloses a kind of vehicle body welding fixtures, including base, height-adjusting mechanism, movable platform, fixed jaw and translation mechanism, height-adjusting mechanism includes with the vertical sliding connection of base guide stud, and with the rotation connection of base top adjusting nut, adjusting nut and guide stud form threaded engagement transmission;Movable platform is fixed in the top of guide stud and along with it to make lifting movement;Fixed jaw is fixed in one end of movable platform;Translation mechanism is equipped on movable platform and output end is equipped with movable jaw, translation mechanism drives movable jaw and moves towards or away from fixed jaw, fixed jaw and movable jaw are cooperated and hold vehicle body;Fixed jaw and movable jaw are all equipped with the pad of horizontal position adjustable, pad and the corresponding vehicle body clamping surface are adapted.The vehicle body welding fixture provided by the utility model realizes the function of holding vehicle body by the accurate adjustment of height position adjustment and clamping spacing, and the adjustment efficiency is high, and it is suitable for use in different vehicle models.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a vehicle body welding fixture. Background Technology

[0002] In automobile body manufacturing, welding is a key process to ensure the strength and precision of the body structure. Welding fixtures, as core equipment for fixing body components, prevent deformation or displacement during the welding process, thereby ensuring weld quality.

[0003] Traditional welding fixtures mostly adopt a fixed structure, and height adjustment relies on multiple sets of bolts or washers. They require repeated disassembly and assembly, which is cumbersome and time-consuming. Furthermore, the clamping mechanism of most fixtures is only designed for specific vehicle models and lacks the function of adjusting the height and horizontal position, making them incompatible with different sized body parts and having poor applicability.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a vehicle body welding fixture, which aims to solve the technical problems of low adjustment efficiency and poor applicability of welding fixtures in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A car body welding fixture, comprising:

[0008] A base for mounting on a welding platform;

[0009] The height adjustment mechanism includes a guide stud that is vertically slidably connected to the base, and an adjusting nut that is rotatably connected to the top of the base. The adjusting nut and the guide stud form a threaded engagement transmission.

[0010] The movable platform is fixed to the top of the guide stud and moves up and down with it;

[0011] The fixed gripper is fixed to one end of the movable table;

[0012] The translation mechanism is located on the movable platform and has a movable gripper at the output end. The translation mechanism drives the movable gripper to move toward or away from the fixed gripper. The fixed gripper and the movable gripper cooperate to clamp the vehicle body. Both the fixed gripper and the movable gripper are equipped with horizontally adjustable pads, which are adapted to the corresponding vehicle body clamping surfaces.

[0013] Furthermore, both the fixed gripper and the movable gripper are provided with a first adjustment groove arranged laterally, the pad is slidably connected to the first adjustment groove, and is locked onto the first adjustment groove by a first fastener.

[0014] Furthermore, a first rubber pad is provided on the side wall of the fixed gripper and the movable gripper that are close to each other, and the first rubber pad extends to its top; a second rubber pad is provided on the surface of the pad block, and the second rubber pad extends to its top.

[0015] Furthermore, the movable platform is provided with several sliding grooves extending toward the fixed gripper, and an inverted T-shaped slider is slidably connected to each sliding groove. The slider is installed at the bottom of the movable gripper by a second fastener.

[0016] Furthermore, the translation mechanism includes an adjusting screw and an adjusting seat. One end of the adjusting screw is rotatably connected to the movable gripper, and the other end is provided with an operating handle with a polygonal column structure. The adjusting seat is fixed on the movable platform and forms a threaded engagement transmission with the adjusting screw.

[0017] Furthermore, the side wall of the guide stud is provided with several guide grooves extending along its height direction; the base is provided with a column, the column has a shaft hole, and the inner wall of the shaft hole is provided with guide protrusions that slide in a one-to-one correspondence with the guide grooves.

[0018] Furthermore, a number of first reinforcing ribs are provided between the base and the column, arranged circumferentially along the axial hole of the column.

[0019] Furthermore, it also includes an auxiliary pressure block, one end of which is detachably mounted on the base, and the other end of which is used to be mounted on the welding platform; the base is also provided with an extension section for mounting on the welding platform, and the extension section and the auxiliary pressure block have an angle between them.

[0020] Furthermore, both the auxiliary pressure block and the extension section are provided with a second adjustment groove extending along their length direction. The second adjustment groove is fixed to the welding platform by a locking assembly. The second adjustment groove located in the extension section is perpendicular to the clamping surface of the fixed jaw.

[0021] Furthermore, the locking assembly includes a locking block, a locking screw, and a locking nut. The locking block is engaged with the welding platform. The locking screw passes through the locking block and the second adjustment groove in sequence and is threadedly connected to the locking nut. The second adjustment groove is clamped between the locking block and the locking nut.

[0022] Beneficial effects:

[0023] This utility model provides a car body welding fixture. A movable table is driven to move up and down via the threaded engagement of a guide stud and an adjusting nut. A translation mechanism drives the movable jaw to move horizontally. Both the fixed and movable jaws are equipped with pads adapted to the car body clamping surface, allowing the movable and fixed jaws to cooperate in clamping the car body. This results in high adjustment efficiency and good clamping stability. Furthermore, the fixture allows for precise adjustment of height and clamping distance, making it suitable for different car models. In addition, auxiliary pressure blocks and extension sections are provided to form a triangular support. The second adjustment groove of the auxiliary pressure blocks and extension sections extends along the length direction and is fixed to the welding platform by a locking assembly, enabling flexible adjustment of the car body welding fixture's installation position. Attached Figure Description

[0024] Figure 1 Structural diagram of the vehicle body welding fixture provided by this utility model;

[0025] Figure 2 Explosion of the car body welding fixture provided by this utility model Figure 1 ;

[0026] Figure 3 Explosion of the car body welding fixture provided by this utility model Figure 2 ;

[0027] Figure 4 A side sectional view of the vehicle body welding fixture provided by this utility model;

[0028] Figure 5 This is a cross-sectional view of the sliding connection between the moving jaw and the movable table in the vehicle body welding fixture provided by this utility model.

[0029] Reference numerals: Base 1, Column 11, Shaft Hole 111, Guide Protrusion 112, First Reinforcing Rib 12, Extension Section 13, Height Adjustment Mechanism 2, Guide Stud 21, Guide Groove 211, Adjusting Nut 22, Movable Table 3, Slide Groove 31, Slider 32, Second Fastener 33, Third Adjusting Groove 34, Third Fastener 35, Fixed Grip 4, First Rubber Pad 41, Second Reinforcing Rib 42, First Adjusting Groove 43, Translation Mechanism 5, Adjusting Screw 51, Operating Handle 511, Adjusting Seat 52, Movable Grip 6, Auxiliary Pressure Block 7, Second Adjusting Groove 71, Step 72, Locking Assembly 8, Locking Block 81, Locking Screw 82, Locking Nut 83, Pad 9, First Fastener 91, Second Rubber Pad 92, Protrusion 93, Welding Platform 10, Positioning Hole 101. Detailed Implementation

[0030] This utility model provides a vehicle body welding fixture. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0032] Please see Figures 1 to 5 As shown, this utility model provides a car body welding fixture, including: a base 1, a height adjustment mechanism 2, a movable platform 3, a fixed clamp 4, and a translation mechanism 5; the base 1 is used to install on a welding platform 10; the height adjustment mechanism 2 includes a guide stud 21 vertically slidably connected to the base 1, and an adjusting nut 22 rotatably connected to the top of the base 1, the adjusting nut 22 and the guide stud 21 forming a threaded engagement transmission; the movable platform 3 is fixed on the top of the guide stud 21 and moves up and down with it; the fixed clamp 4 is fixed at one end of the movable platform 3; the translation mechanism 5 is provided on the movable platform 3 and has a movable clamp 6 at its output end, the translation mechanism 5 drives the movable clamp 6 to move toward or away from the fixed clamp 4, the fixed clamp 4 and the movable clamp 6 cooperate to clamp the car body; both the fixed clamp 4 and the movable clamp 6 are provided with horizontally adjustable pads 9, the pads 9 being adapted to the corresponding car body clamping surfaces.

[0033] In practical applications, vehicle body welding needs to be performed on welding platform 10. The welding platform is equipped with components to support the vehicle body. To ensure the stability of the vehicle body during welding, multiple vehicle body welding fixtures are also required to fix its position. In this embodiment, at least four vehicle body welding fixtures are installed on welding platform 10. Each fixture is located below the four door frames of the vehicle body, and is used to clamp the bottom of the door frames to lock the vehicle body in place. Additionally, the vehicle body welding fixtures can also be used to clamp other parts of the vehicle body; their specific working positions should be determined based on the site conditions.

[0034] During operation, appropriate pads 9 are pre-installed on the fixed jaw 4 and movable jaw 6 according to the vehicle body clamping requirements. Then, the adjusting nut 22 is rotated to drive the guide stud 21 to slide vertically along the base 1, causing the movable platform 3 to rise and fall as a whole, thus quickly adapting to the vertical installation requirements of different vehicle bodies. At the same time, the translation mechanism 5 drives the movable jaw 6 to move horizontally along the movable platform 3, and the movable jaw 6 and the fixed jaw 4 form a dynamic adjustment of the clamping distance. During the clamping distance adjustment process, the position of each pad 9 is finely adjusted so that the pad 9 matches the clamping surface of the vehicle body, thereby clamping the vehicle body. The pads 9 also increase the contact area between the fixed jaw 4 and the movable jaw 6 and the vehicle body, further improving the stability of clamping the vehicle body. The two work together to flexibly adapt to different vehicle body sizes—the height adjustment mechanism 2 controls the clamping height, and the translation mechanism 5 adjusts the clamping width. Through two-stage independent adjustment, the precise positioning and fixation of the vehicle body is completed without the need for repeated disassembly and assembly of clamping components, which can effectively improve adjustment efficiency and is suitable for fixing vehicle bodies of various sizes.

[0035] See above. Figure 4 The adjusting nut 22 can be rotatably connected to the base 1 via a bearing, which facilitates the rotation of the adjusting nut 22. Alternatively, the adjusting nut 22 can be mounted on top of the base 1 under its own weight, meaning there are no connecting parts between the adjusting nut 22 and the base 1. Since the guide stud 21 is vertically slidably connected to the base 1, and the guide stud 21 and the adjusting nut 22 are threadedly engaged, the adjusting nut 22 remains at the top of the base 1 under the influence of gravity. During operation, rotating the adjusting nut 22 engages with the guide stud 21, driving the guide stud 21 to move up and down.

[0036] In a preferred embodiment, see [reference] Figure 3 , 4 Both the fixed gripper 4 and the movable gripper 6 are provided with a first adjustment groove 43 arranged laterally. The pad 9 is slidably connected to the first adjustment groove 43 and locked onto the first adjustment groove 43 by a first fastener 91. Specifically, the back of the pad 9 is provided with a protrusion 93 that is slidably connected to the first adjustment groove 43. Under the guidance of the protrusion 93 and the first adjustment groove 43, it is ensured that the pad 9 moves only in the horizontal direction and will not wobble. The first fastener 91 includes a screw on the pad 9 and a hand-tightening nut screwed to the screw. The screw passes through the first adjustment groove 43 and is screwed to the hand-tightening nut. Loosening the hand-tightening nut can adjust the position of the pad 9; conversely, loosening the hand-tightening nut can lock the position of the pad 9. By adjusting the lateral position of the pad 9, a quick match between the pad 9 and the vehicle body clamping surface can be achieved.

[0037] In addition, the pad 9 can be quickly removed by unscrewing the hand nut, making the operation simple and quick.

[0038] It should be noted that the shape of the clamping surface varies depending on the type of car body, specifically whether it has recessed or protruding surfaces. By setting a suitable pad 9 to contact the recessed or protruding surfaces, the contact area between the fixed jaw 4 and the movable jaw 6 and the car body can be increased, thereby improving the stability of clamping the car body. Additionally, for some car bodies, the clamping surface is flat; in this case, the pad 9 is not required, and the surfaces of the fixed jaw 4 and the movable jaw 6 can contact the car body clamping surface.

[0039] Further, see Figure 4 Each of the fixed gripper 4 and the movable gripper 6 has a first rubber pad 41 on its adjacent sidewall, and the first rubber pad 41 extends to its top. The surface of the pad block 9 has a second rubber pad 92, and the second rubber pad 92 extends to its top. The first rubber pad 41 and the second rubber pad 92 achieve flexible clamping. When the translation mechanism 5 drives the movable gripper 6 to move toward the fixed gripper 4, the first rubber pad 41 and the second rubber pad 92 preferentially contact the vehicle body surface. Their elastic properties allow the clamping force to be partially absorbed and evenly distributed at the moment of contact, avoiding rigid impact. As the clamping action continues, the first rubber pad 41 and the second rubber pad 92 are deformed under pressure, adaptively conforming to the curved surface or edges of the vehicle body to further ensure the stability of the vehicle body clamping. At the same time, the first rubber pad 41 extending to the top of the gripper covers the top of the movable gripper 6 and the fixed gripper 4, and the second rubber pad 92 extending to the top of the pad block 9 covers the top of the pad block 9, preventing the bottom edge of the vehicle body from hardly colliding with the metal gripper during clamping or lifting.

[0040] In practical applications, the pad 9 can also be made of rubber. During the clamping process, it can deform according to the clamping surface of the car body, so that the pad 9 fits the clamping surface of the car body better and is more conducive to clamping car bodies with more complex shapes.

[0041] Preferably, both the fixed gripper 4 and the movable gripper 6 are L-shaped mechanisms, and the outer sides of the fixed gripper 4 and the movable gripper 6 are provided with a second reinforcing rib 42 to improve the structural strength of the fixed gripper 4 and the movable gripper 6.

[0042] Optionally, the first rubber pad 41 is fixed to the fixed jaw 4 and the movable jaw 6 by means of adhesive or countersunk screws, and the second rubber pad 92 is fixed to the pad block 9 by means of adhesive or countersunk screws, so as to avoid the rigid connecting parts pressing against the outer surface of the vehicle body.

[0043] In a preferred embodiment, see [reference] Figure 2 , 5The movable platform 3 is provided with several sliding grooves 31 extending toward the fixed gripper 4. Each sliding groove 31 is slidably connected to an inverted T-shaped slider 32, which is mounted on the bottom of the movable gripper 6 via a second fastener 33. The second fastener 33 can be a screw or bolt. The extension direction of the sliding groove 31 is perpendicular to the fixed gripper 4. The inverted T-shaped slider 32 moves along the sliding groove 31 to limit the movement direction of the movable gripper 6, so that under the drive of the translation mechanism 5, the movable gripper 6 moves toward or away from the fixed gripper 4, thereby adjusting the clamping distance between the movable gripper 6 and the fixed gripper 4.

[0044] In a preferred embodiment, see [reference] Figure 2 , 4 The translation mechanism 5 includes an adjusting screw 51 and an adjusting seat 52. One end of the adjusting screw 51 is rotatably connected to the movable jaw 6, and the other end is provided with an operating handle 511 of a polygonal cylindrical structure. The adjusting seat 52 is fixed on the movable platform 3 and forms a threaded engagement transmission with the adjusting screw 51. The linear drive of the movable jaw 6 is achieved through the threaded engagement of the adjusting screw 51 and the adjusting seat 52. During operation, rotating the operating handle 511 at the end of the adjusting screw 51 causes the adjusting screw 51 to rotate circumferentially within the adjusting seat 52. Due to the constraint of the threaded engagement, the adjusting screw 51 translates along its axial direction while rotating, thereby pushing or pulling the movable jaw 6, which is rotatably connected to it, to move horizontally, so as to achieve precise control of the clamping distance between the movable jaw 6 and the fixed jaw 4. In addition, the self-locking characteristic of the threaded drive can effectively resist the displacement of the movable jaw 6 caused by welding vibration or the weight of the vehicle body, ensuring the long-term stability of the positioning during clamping.

[0045] Specifically, the polygonal column structure can be a regular quadrilateral or a regular hexagonal column structure. The polygonal column structure of the operating handle 511 is easy to adapt to wrenches or socket tools to enhance the stability of the operating torque input.

[0046] In the above, the end of the adjusting screw 51 can be rotatably connected to the moving jaw 6 via a bearing.

[0047] Preferably, such as Figure 2 As shown, the movable platform 3 has two third adjustment grooves 34 arranged parallel to the sliding groove 31. The fixed gripper 4 is installed on the third adjustment grooves 34 by several third fasteners 35. The third fasteners 35 are screws, which pass through the third adjustment grooves 34 and connect to the fixed gripper. During adjustment, the screws move along the third adjustment grooves 34 to fine-tune the position of the fixed gripper; tightening the screws locks the position of the fixed gripper.

[0048] In a preferred embodiment, see [reference] Figure 2 , 4The guide stud 21 has several guide grooves 211 extending along its height direction on its side wall; the base 1 has a column 11 with a shaft hole 111 inside, and the inner wall of the shaft hole 111 has guide protrusions 112 that slide in a one-to-one correspondence with the guide grooves 211. When the adjusting nut 22 drives the guide stud 21 to rise or fall, the guide grooves 211 on the side wall of the guide stud 21 and the guide protrusions 112 in the shaft hole 111 form a sliding connection, forcing the guide stud 21 to move only in the vertical direction, thus avoiding the left and right swaying of the movable table 3 during height adjustment, which would affect the adjustment of the clamping position.

[0049] Further, see Figure 2 The base 1 and the column 11 are provided with a plurality of first reinforcing ribs 12 arranged circumferentially along the shaft hole 111 of the column 11. The multiple first reinforcing ribs 12 are distributed along the periphery of the column 11 to form a ring support, thereby improving the stability of the connection structure between the column 11 and the base 1.

[0050] In a preferred embodiment, see [reference] Figure 1 , 2 The system also includes an auxiliary pressure block 7, one end of which is detachably mounted on the base 1, and the other end of which is used to mount the welding platform 10. The base 1 also has an extension section 13 for mounting on the welding platform 10, and the extension section 13 forms an angle with the auxiliary pressure block 7. When the base 1 is mounted on the welding platform 10 via the extension section 13, the auxiliary pressure block 7 is detachably connected to different sides of the base 1, forming a triangular support structure using the angle between it and the extension section 13. The operator can adjust the installation position of the auxiliary pressure block 7 on the base 1 according to the layout constraints of the welding platform 10 to ensure the stability of the base 1 installation.

[0051] See above. Figure 2 , 3 The auxiliary pressure block 7 is provided with a stepped portion 72, which is pressed against the upper surface of the base 1 to form a detachable connection.

[0052] It should be noted that the welding platform 10 is provided with a number of positioning holes 101 arranged in a matrix. The auxiliary pressure block 7 and the extension section 13 can be connected to any positioning hole 101 through the locking assembly 8 to fix the position of the base 1.

[0053] Further, see Figure 1 , 2Both the auxiliary pressure block 7 and the extension section 13 have second adjustment grooves 71 extending along their length. The second adjustment grooves 71 are fixed to the welding platform 10 by locking components 8, achieving multi-dimensional installation adaptation through the second adjustment grooves 71 on the auxiliary pressure block 7 and the extension section 13. During operation, the auxiliary pressure block 7 and the extension section 13 move along the surface of the welding platform 10 through their respective second adjustment grooves 71, adjusting according to the installation position of the vehicle body welding fixture and the position of the positioning holes 101 on the welding platform 10. The locking components 8 pass through the corresponding positioning holes 101 and second adjustment grooves 71 to fix the base 1 to the welding platform 10.

[0054] The second adjustment groove 71 located in the extension section 13 is perpendicular to the clamping surface of the fixed clamp 4, so that when the base 1 moves as a whole along the vertical direction of the vehicle body clamping surface, the installation position of the fixed clamp 4 can be adjusted so that the fixed clamp 4 abuts against one side of the vehicle body clamping surface. When the translation mechanism 5 drives the movable clamp 6 to move toward the fixed clamp 4, the movable clamp 6 and the fixed clamp 4 cooperate to clamp the vehicle body.

[0055] Furthermore, see Figure 2 , 4 The locking assembly 8 includes a locking block 81, a locking screw 82, and a locking nut 83. The locking block 81 is engaged with the welding platform 10. The locking screw 82 passes through the locking block 81 and the second adjustment groove 71 in sequence and is threadedly connected to the locking nut 83. The second adjustment groove 71 is clamped between the locking block 81 and the locking nut 83. During operation, the locking block 81 is inserted into the positioning hole 101 on the welding platform 10. The locking screw 82 passes through the locking block 81 and the second adjustment groove 71 in sequence and is threaded to the locking nut 83. By tightening the nut, the locking block 81 and the locking nut 83 clamp the second adjustment groove 71 and the positioning hole 101, thereby pressing the extension section 13 and the auxiliary pressure block 7 against the surface of the welding platform 10 to achieve stable installation of the base.

[0056] It should be noted that both the positioning hole 101 and the locking block 81 are rectangular structures. The width of the locking block 81 is smaller than the width of the positioning hole 101, and the length of the locking block 81 is smaller than the length of the positioning hole 101, while the length of the locking block 81 is longer than the width of the positioning hole 101. This allows the locking block 81 to be inserted into the positioning hole 101 and rotated 90° to lock into the positioning hole 101. Conversely, during disassembly, rotating the locking block 81 90° in the opposite direction allows it to be directly removed from the positioning hole 101. This enables the quick assembly and disassembly of the locking assembly 8, eliminating the need to repeatedly disassemble and reassemble the locking screws 82 when moving the vehicle body welding fixture, thus reducing manual operation time.

[0057] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A vehicle body welding fixture, characterized in that, include: Base (1), for mounting on the welding platform; The height adjustment mechanism (2) includes a guide stud (21) that is vertically slidably connected to the base (1) and an adjusting nut (22) that is rotatably connected to the top of the base (1). The adjusting nut (22) and the guide stud (21) form a threaded engagement transmission. The movable platform (3) is fixed on the top of the guide stud (21) and moves up and down with it; The fixed gripper (4) is fixed at one end of the movable table (3); The translation mechanism (5) is located on the movable platform (3) and has a movable gripper (6) at its output end. The translation mechanism (5) drives the movable gripper (6) to move toward or away from the fixed gripper (4). The fixed gripper (4) and the movable gripper (6) cooperate to clamp the car body. The fixed gripper (4) and the movable gripper (6) are each provided with a horizontally adjustable pad (9). The pad (9) is adapted to the corresponding car body clamping surface. Both the fixed jaw (4) and the movable jaw (6) are provided with a first adjustment groove (43) arranged horizontally. The pad (9) is slidably connected to the first adjustment groove (43) and locked on the first adjustment groove (43) by the first fastener (91). The fixed gripper (4) and the movable gripper (6) are each provided with a first rubber pad (41) on the side wall that is close to each other, and the first rubber pad (41) extends to its top; the surface of the pad block (9) is provided with a second rubber pad (92), and the second rubber pad (92) extends to its top.

2. The vehicle body welding fixture according to claim 1, characterized in that, The movable platform (3) is provided with several sliding grooves (31) extending toward the fixed gripper (4). Each sliding groove (31) is slidably connected with an inverted T-shaped slider (32). The slider (32) is installed at the bottom of the movable gripper (6) by a second fastener (33).

3. The vehicle body welding fixture according to claim 1, characterized in that, The translation mechanism (5) includes an adjusting screw (51) and an adjusting seat (52). One end of the adjusting screw (51) is rotatably connected to the movable jaw (6), and the other end is provided with an operating handle (511) with a polygonal column structure. The adjusting seat (52) is fixed on the movable table (3) and forms a threaded engagement transmission with the adjusting screw (51).

4. The vehicle body welding fixture according to claim 1, characterized in that, The side wall of the guide stud (21) is provided with a number of guide grooves (211) extending along its height direction; the base (1) is provided with a column (11), the column (11) has a shaft hole (111) inside, and the inner wall of the shaft hole (111) is provided with a guide protrusion (112) that corresponds to and slides with the guide groove (211).

5. The vehicle body welding fixture according to claim 4, characterized in that, The base (1) and the column (11) are provided with a number of first reinforcing ribs (12) arranged circumferentially along the shaft hole (111) of the column (11).

6. The vehicle body welding fixture according to claim 1, characterized in that, It also includes an auxiliary pressure block (7), one end of which is detachably mounted on the base (1), and the other end of which is used to be mounted on the welding platform; the base (1) is also provided with an extension section (13) for mounting on the welding platform, and the extension section (13) and the auxiliary pressure block (7) have an angle between them.

7. The vehicle body welding fixture according to claim 6, characterized in that, The auxiliary pressure block (7) and the extension section (13) are both provided with a second adjustment groove (71) extending along their length direction. The second adjustment groove (71) is fixed to the welding platform by the locking assembly (8). The second adjustment groove (71) located in the extension section (13) is perpendicular to the clamping surface of the fixed jaw (4).

8. The vehicle body welding fixture according to claim 7, characterized in that, The locking assembly (8) includes a locking block (81), a locking screw (82), and a locking nut (83). The locking block (81) is engaged with the welding platform. The locking screw (82) passes through the locking block (81) and the second adjustment groove (71) in sequence and is threadedly connected to the locking nut (83). The second adjustment groove (71) is clamped between the locking block (81) and the locking nut (83).

Images